Three-piece carton forming machine

Abstract

The present disclosure discloses a three-piece carton forming machine. The main paperboard bin is arranged on the frame for placing the main paperboard to be processed; the conveying device is arranged on the lower side of the discharge part of the main paperboard bin; the pick-up and placement device is arranged on the upper side of the conveying device for taking out the main paperboard from the main paperboard bin and placing it on the conveying device; the glue dispensing system is arranged on the frame; the two side paperboard bins are used to place the side paperboard to be processed; the side paperboard pick-up and placement device is arranged on the lower side of the side paperboard bin for taking out the side paperboard from the side paperboard bin; the carton male mold is arranged between the two side paperboard bins; the carton forming female mold is arranged on the lower side of the carton male mold for forming the main paperboard and the side paperboard into a carton; the control system connects the above devices. The equipment can realize full automation, and the main paperboard bin, the conveying device, the side paperboard bin and the carton forming female mold can all be manually adjusted to adapt to the forming of cartons of different sizes and types.

Description

Technical Field

[0001] The present disclosure generally relates to the field of packaging equipment technology and more specifically to a three-piece carton forming machine. Background Art

[0002] At present, due to the characteristics of high strength, material saving and high degree of standardization, three-piece carton is increasingly widely accepted. Therefore, the market demand for three-piece carton forming machines is becoming more and more vigorous. After the main paperboard of the current three-piece carton is taken out from the main paperboard silo, it is placed in the paperboard conveying track. The paperboard pusher pushes the paperboard forward in the paperboard conveying track, and the glue is sprayed in the process until it is conveyed to the top of the forming mother mold. The first and second side paperboards are taken out horizontally from their horizontal silos through the suction cups. The suction cup releases the vacuum, and the side paperboard falls freely along the guide channel and falls into the C-shaped space of the side paperboard pusher. The side paperboard is in a floating state in the C-shaped space; the side paperboard pusher pushes out, and the C-shaped space drives the paperboard to be stuck into the male mold. The male mold drives the side paper to move down along the inner wall of the C-shaped space until it contacts the main paperboard that has been in place. The male mold continues to move down, driving the side paperboard and the main paperboard to insert into the mother mold to complete the corresponding folding and bonding work.

[0003] However, in the prior art solutions, there is a problem of difficulty in adjusting cartons of different sizes during the entire process of silo storage, transportation and molding, and the coordination between the various components is poor and the degree of mechanization is low.

[0004] In view of this, there is an urgent need to provide a solution for a three-piece carton forming machine so as to solve at least one of the above problems. Summary of the invention

[0005] In order to at least solve one or more of the technical problems mentioned above, the present disclosure proposes a solution of a three-piece carton forming machine in multiple aspects.

[0006] The present disclosure provides a three-piece carton forming machine. The three-piece carton forming machine includes: a frame, a main paperboard bin, a conveying device, a pick-and-place device, a glue dispensing system, two side paperboard bins, a side paperboard pick-and-place device, a carton male mold, a carton forming female mold, and a control system. The main paperboard bin is arranged on the frame, and is used to place the main paperboard to be processed; the conveying device is arranged on the lower side of the discharge part of the main paperboard bin, and is used to convey the main paperboard taken out from the main paperboard bin; the pick-and-place device is arranged on the upper side of the conveying device, and is used to take out the main paperboard from the main paperboard bin and place it on the conveying device; the glue dispensing system is arranged on the frame; the two side paperboard bins are used to place the side paperboard to be processed; the side paperboard pick-and-place device is arranged on the lower side of the side paperboard bin, and is used to take out the side paperboard from the side paperboard bin; the carton male mold is arranged between the two side paperboard bins; the carton forming female mold is arranged on the lower side of the carton male mold, and is used to form the main paperboard and the side paperboard into a carton. The control system is connected to the main paperboard bin, the conveying device, the picking and placing device, the glue dispensing system, the side paperboard bin, the side paperboard picking and placing device, the carton male mold and the carton forming female mold; wherein the glue dispensing system glues the main paperboard before the main paperboard is transferred to the carton forming female mold to complete the pressing of the main paperboard and the side paperboard in the carton forming female mold.

[0007] In some embodiments, the main paperboard bin includes: a bin frame, side guard plates, a guide device, a guard plate adjustment device, a conveying adjustment device, and a conveying and holding device. The bin frame is mounted on the frame; the side guard plates are mounted on both sides of the bin frame to protect the sides of the main paperboard; the guide device is arranged on the bin frame to support the main paperboard and guide the side guard plates to move to both sides; the guard plate adjustment device is arranged on the bin frame to adjust the distance between the side guard plates; the conveying and holding device is arranged on the bin frame; the conveying and holding device is mounted on the conveying and holding device and the guide device to convey the main paperboard; wherein, the conveying and holding device can adjust the conveying and holding device to move along the guide device.

[0008] In some embodiments, the silo rack includes: a first supporting profile and a second supporting profile, a first upper connecting plate and a second upper connecting plate, and a first lower connecting plate and a second lower connecting plate. The first supporting profile is parallel to the second supporting profile; one end of the first upper connecting plate is connected to the first supporting profile, and the other end is provided with a first through hole; one end of the second upper connecting plate is connected to the second supporting profile, and the other end is provided with a second through hole; one end of the first lower connecting plate is connected to the first supporting profile, and the other end is provided with a third through hole and a fourth through hole; one end of the second lower connecting plate is connected to the second supporting profile, and the other end is provided with a fifth through hole and a sixth through hole.

[0009] In some embodiments, the guide device includes: a first guide shaft, a second guide shaft and a third guide shaft. The first guide shaft is inserted into the third through hole and the fifth through hole through a circular sleeve; the second guide shaft is inserted into the fourth through hole and the sixth through hole through a circular sleeve; the third guide shaft is inserted into the first through hole and the second through hole through a circular sleeve; wherein the first guide shaft is parallel to the second guide shaft and the third guide shaft.

[0010] In some embodiments, a seventh through hole is further provided between the third through hole and the fourth through hole of the first lower connecting plate, an eighth through hole is further provided between the fifth through hole and the sixth through hole of the second lower connecting plate, a ninth through hole is further provided on the first upper connecting plate, and a tenth through hole is further provided on the second upper connecting plate, and the guard plate adjustment device comprises: a first forward and reverse screw rod and a second forward and reverse screw rod. The first forward and reverse screw rod is plugged into the seventh through hole and the eighth through hole through two forward and reverse rotating T-shaped nuts; the second forward and reverse screw rod is plugged into the ninth through hole and the tenth through hole through two forward and reverse rotating T-shaped nuts, and the second forward and reverse screw rod is parallel to the first forward and reverse screw rod.

[0011] In some embodiments, the guard plate adjustment device also includes: a transmission device, which is installed at the end of the first forward and reverse screw rod and the second forward and reverse screw rod on the same side, so that the first forward and reverse screw rod and the second forward and reverse screw rod rotate synchronously.

[0012] In some embodiments, the guard plate adjustment device also includes: a guard plate rotating handle, which is arranged at the end of the first forward and reverse screw rod away from the transmission device, and is used to manually adjust the distance between the first supporting profile and the second supporting profile.

[0013] In some embodiments, the side guard plate includes: a first side guard plate and a second side guard plate. The first side guard plate is connected to the first supporting profile and the first lower connecting plate; the second side guard plate is connected to the second supporting profile and the second lower connecting plate.

[0014] In some embodiments, an eleventh through hole is further provided between the fourth through hole and the seventh through hole of the first lower connecting plate, and a twelfth through hole is further provided between the sixth through hole and the eighth through hole of the second lower connecting plate. The conveying adjustment device comprises: a conveying adjustment forward and reverse screw rod, the conveying adjustment forward and reverse screw rod being inserted into the eleventh through hole and the twelfth through hole through two forward and reverse rotation T-shaped nuts.

[0015] In some embodiments, the conveying adjustment device further includes: a conveying rotating handle, which is disposed at one end of the conveying adjustment forward and reverse screw rod and is used to manually adjust the conveying containing device.

[0016] In some embodiments, the conveying and containing device includes: a first conveying and containing device and a second conveying and containing device. The first conveying and containing device is respectively sleeved on the first guide shaft and the second guide shaft through two circular sleeves, and is sleeved on the conveying and adjusting forward and reverse screw rod through forward and reverse rotation T-shaped nuts; the second conveying and containing device is respectively sleeved on the first guide shaft and the second guide shaft through two circular sleeves, and is sleeved on the conveying and adjusting forward and reverse screw rod through forward and reverse rotation T-shaped nuts; wherein, the first conveying and containing device is parallel to the second conveying and containing device.

[0017] In some embodiments, the conveying device includes: a conveying device frame, a linear drive mechanism, a pusher, and an extension rod. The conveying device frame includes a molding station and a conveying station for conveying materials to the molding station; the linear drive mechanism is arranged on the conveying device frame; the initial position of the pusher is located on the conveying station of the conveying device frame; one end of the extension rod is connected to the pusher, and the other end is connected to the linear drive mechanism, which is used to extend the pushing stroke of the pusher; wherein the linear drive mechanism drives the extension rod and the pusher to move back and forth in a straight line in the conveying device frame to push materials of different sizes into the molding station.

[0018] In some embodiments, the linear drive mechanism includes: a conveying mechanism and a servo motor. The conveying mechanism includes a conveying rod connected to the conveying device frame, a driving wheel installed on one side of the conveying rod, a driven wheel installed on the other side of the conveying rod, and a belt sleeved between the driving wheel and the driven wheel and connected to the extension rod; the servo motor is installed on the conveying rod, and the output shaft of the servo motor is connected to the driving wheel.

[0019] In some embodiments, the belt is a synchronous belt, and the linear drive mechanism also includes: an adapter, the adapter includes a belt connecting part and an extension rod connecting part connected to the belt connecting part, wherein the extension rod is connected to the extension rod connecting part, and a limiting groove is opened in the belt connecting part, and the groove wall of the limiting groove is embedded with limiting teeth, and the limiting teeth are engaged with the belt.

[0020] In some embodiments, the conveying device further includes: a sliding mechanism, the sliding mechanism including a slide rail and a slider slidably connected to the slide rail, wherein the slider is connected to the adapter, and the slide rail is connected to the conveying rod and is parallel to the belt.

[0021] In some embodiments, the pusher comprises: a push plate, a supporting plate and an avoidance baffle. The push plate is connected to an end of the extension rod away from the linear drive mechanism; the supporting plate is connected to the bottom of the push plate; the avoidance baffle is connected to the top of the push plate; wherein an obtuse angle is formed between the avoidance baffle and the push plate.

[0022] In some embodiments, the conveying device frame includes a first conveying rail and a second conveying rail parallel to each other, and the conveying device also includes: two supporting assemblies, each of which is respectively connected to the first conveying rail and the second conveying rail for supporting materials.

[0023] In some embodiments, the conveying device further comprises: a bearing assembly, the bearing assembly comprising: four connecting plates and two bearing rods. Every two connecting plates are spaced and symmetrically arranged on the first conveying guide rail and the second conveying guide rail, and each connecting plate is provided with a bearing rod through hole; each bearing rod passes through the corresponding bearing rod through hole and is plugged into the first conveying guide rail and the second conveying guide rail to support the two supporting assemblies and the linear drive mechanism.

[0024] In some embodiments, each of the connecting plates is also provided with a through hole for a rack forward and reverse screw rod, and the conveying device further includes: a rack adjustment device, and the rack adjustment device includes: two rack forward and reverse screw rods, a rack transmission device, and a rack adjustment handle. Each of the rack forward and reverse screw rods is respectively inserted into the two corresponding rack forward and reverse screw rod through holes on the connecting plate through two forward and reverse rotating T-shaped nuts; the rack transmission device connects the same side ends of the two rack forward and reverse screw rods to drive the two rack forward and reverse screw rods to move synchronously; the rack adjustment handle is arranged at one end of one of the rack forward and reverse screw rods to manually adjust the distance between the first conveying guide rail and the second conveying guide rail.

[0025] In some embodiments, the conveying device also includes: two positioning blocks, which are symmetrically arranged on the first conveying guide rail and the second conveying guide rail on both sides of the molding station to slide along the first conveying guide rail and the second conveying guide rail and lock and fix after sliding into place.

[0026] In some embodiments, the pick-and-place device includes: a power mechanism, an extraction device and a connecting rod mechanism. The power mechanism is arranged on the frame; the extraction device is used to extract and release materials; the connecting rod mechanism includes: a swing arm, one end of which is rotatably connected to the frame and connected to the power mechanism through a first rotating shaft; a slide seat, which is rotatably connected to the frame; a slide rod device, one end of which is rotatably connected to the other end of the swing arm through a second rotating shaft, and the other end is arranged on the extraction device after passing through the slide seat; wherein the power mechanism can drive the slide rod device to slide in the slide seat through the swing arm and generate rotation at the same time, and the slide rod device drives the extraction device to pick up materials from the storage area of ​​the three-piece carton forming machine and place them on the conveying device.

[0027] In some embodiments, the extraction device comprises: a bearing member and a grabbing device. The bearing member is connected to the other end of the slide bar device; the grabbing device is arranged on the bearing member and is used to grab the material.

[0028] In some embodiments, the gripping device is at least one vacuum suction cup or at least one pneumatic gripper.

[0029] In some embodiments, the pick-up and place device further includes: a perturbative pipeline, and the perturbative pipeline includes: at least one branch pipe, a first transfer device, a second transfer device, a first trunk pipe, a second trunk pipe and a third trunk pipe. At least one of the branch pipes is arranged on the bearing member and is connected to at least one of the vacuum suction cups or at least one of the pneumatic clamps one by one; the first transferor is fixed on the frame and has a first axis that is collinear with the central axis of the first rotating shaft; the second transferor is fixed on the swing arm or the second rotating shaft and has a second axis that is collinear with the central axis of the second rotating shaft; one end of the first trunk pipe is used to connect the vacuum pumping equipment and the other end is connected to the first transferor; one end of the second trunk pipe is connected to the first transferor and the other end is connected to the second transferor; one end of the third trunk pipe is connected to the second transferor and the other end is connected to each of the vacuum suction cups through at least one of the branch pipes; wherein, the first transferor can connect the first trunk pipe with the second trunk pipe and allow the second trunk pipe to rotate around the first axis relative to the first trunk pipe, and the second transferor can connect the third trunk pipe with the second trunk pipe and allow the second trunk pipe to rotate around the second axis relative to the third trunk pipe.

[0030] In some embodiments, the slide bar device comprises: a slide bar and a first connecting end plate. One end of the slide bar is rotatably connected to the other end of the swing arm via a second rotating shaft; one end of the first connecting end plate is fixedly connected to the bearing member, and the other end is fixedly connected to the other end of the slide bar, so as to enhance the connection strength between the slide bar and the bearing member.

[0031] In some embodiments, the sliding bar device further includes a reinforcing plate fixedly mounted on the bearing member and fixedly connected to the sliding bar.

[0032] In some embodiments, the slide bar device comprises: a first slide bar, a second slide bar and a second connecting end plate. One end of the first slide bar and the second slide bar passes through the slide seat and is arranged on the bearing member; the second connecting end plate is rotatably connected to the other end of the swing arm through a second rotating shaft, and the other ends of the first slide bar and the second slide bar are connected to the second connecting end plate.

[0033] In some embodiments, the angle between the center line of the swing arm at the initial position and the center line of the slide bar device along the length direction is in the range of 85° to 105°.

[0034] In some embodiments, the power mechanism includes a motor, an engine, a swing cylinder, or a component mainly composed of a cylinder, a rack and a gear and used to drive the swing arm to rotate.

[0035] In some embodiments, the side paperboard bin comprises: a side paperboard bin frame, a side paperboard side guard plate, a pressure plate device and a paper support plate. The side paperboard bin frame is arranged on the frame; the side paperboard side guard plate is connected to the side paperboard bin frame to protect the side of the side paperboard; the pressure plate device is arranged on the side paperboard bin frame to compact the top of the side paperboard; the paper support plate is arranged at the bottom of the side paperboard side guard plate to support the side paperboard.

[0036] In some embodiments, there are two side paperboard side guard plates, and the two side paperboard side guard plates are both arranged on a side of the side paperboard material storage rack away from the carton male mold.

[0037] In some embodiments, the side paperboard and side guard plate are integral plate structures, and the width of the side paperboard and side guard plate is greater than the width of the side paperboard.

[0038] In some embodiments, the pressing plate device comprises: a pressing plate sliding rod, a pressing plate slider and a pressing plate. The pressing plate sliding rod is fixed to the side paperboard material storage rack and is located in the middle of the two side paperboard side guard plates; the pressing plate slider can be slidably arranged on the pressing plate sliding rod; one end of the pressing plate is arranged on the pressing plate slider and moves along the pressing plate sliding rod with the pressing plate slider, and the other end extends to the upper part of the side paperboard to press against the side paperboard under the action of gravity.

[0039] In some embodiments, the bottom of the side paperboard side guard plate is provided with a long groove, and the paper support plate includes: a support plate and a baffle. The support plate is fixedly connected to the bottom of the side paperboard side guard plate, extends into the inner side of the side paperboard material bin, and is used to support the side paperboard; the baffle can be slidably arranged at the bottom of the side paperboard side guard plate, and is used to stop the side paperboard from tilting forward and limit the falling position of the side paperboard.

[0040] In some embodiments, the side paperboard material bin further includes: a side guard plate adjusting device, wherein the side guard plate adjusting device connects the two side paperboard side guard plates and is used to adjust the distance between the two side paperboard side guard plates.

[0041] In some embodiments, the two side paperboard side guards are provided with shaft sleeves on one side facing the side paperboard material storage rack, the side paperboard material storage rack is provided with a side paperboard through hole, and the side guard plate adjustment device comprises: a side guard plate forward and reverse screw rod and a side paperboard adjustment handle. The side guard plate forward and reverse screw rod is connected to the side paperboard material storage rack through a bearing seat, and one end passes through the side paperboard through hole, and is inserted into two shaft sleeves through a forward and reverse rotating T-shaped nut; the side paperboard adjustment handle is installed at one end of the side guard plate forward and reverse screw rod passing through the side paperboard through hole, and is used to rotate the side guard plate forward and reverse screw rod to drive the two side paperboard side guard plates to move relative to or towards each other.

[0042] In some embodiments, the carton male mold comprises: a male mold driving device and a male mold module. The male mold driving device is arranged on the frame; the male mold module is installed on the male mold driving device to reciprocate up and down under the drive of the male mold driving device.

[0043] In some embodiments, the male mold module comprises: a male mold forming plate, two male mold guard plates and a driving connection plate. The two male mold guard plates are symmetrically arranged on both sides of the male mold forming plate facing the side paperboard bin; one end of the driving connection plate is fixedly connected to the male mold forming plate, and the other end is connected to the male mold driving device.

[0044] In some embodiments, the three-piece carton forming machine further includes: two side cardboard bending mechanisms, which are used to bend the side cardboards taken out by the side cardboard picking and placing device after they are pushed to the carton male mold.

[0045] In some embodiments, the side paperboard bending mechanism comprises: a side paperboard bending power device and a side paperboard bending plate. The side paperboard bending power device is installed on the frame; the side paperboard bending plate is connected to the side paperboard bending power device, so as to move toward the male mold guard plate to bend the side paperboard under the drive of the side paperboard bending power device.

[0046] In some embodiments, the carton forming mother mold comprises: a base frame, a CD sliding frame, a corner mold fixing part and an adjusting device. The CD sliding frame is movably arranged on the base frame; the corner mold fixing part is arranged on the CD sliding frame for installing forming mold parts; the adjusting device is arranged on the base frame, connected to the CD sliding frame, and used to adjust the position of the CD sliding frame.

[0047] In some embodiments, the base frame includes: a first CD guide bar, a second CD guide bar, a first MD guide bar, a second MD guide bar, four connection seats and four adjustment units. The first CD guide bar is parallel to the second CD guide bar; the first MD guide bar is parallel to the second MD guide bar and perpendicular to the first CD guide bar; each connection seat includes a first connection seat through hole and a fixing portion perpendicular to the axis of the first through hole; each adjustment unit is used to adjust the position of the base frame; wherein, the two ends of the first CD guide bar and the second CD guide bar respectively pass through the first connection seat through holes of the two connection seats and each end is connected to one connection seat through one adjustment unit, and the two ends of the first MD guide bar and the second MD guide bar are respectively connected to a fixing portion of the connection seat.

[0048] In some embodiments, the CD sliding frame includes: two CD sliding frame end plates and two CD sliding frame guide rods. Each CD sliding frame end plate includes a CD guide sleeve; the two CD sliding frame guide rods are respectively connected to the CD sliding frame end plates; wherein the CD sliding frame is respectively sleeved on the first CD guide rod and the second CD guide rod through the CD guide sleeves at both ends, so as to be able to slide along the first CD guide rod and the second CD guide rod.

[0049] In some embodiments, the corner mold fixing member includes: a first side plate and a second side plate. The first side plate has two corner mold through holes, and the two CD sliding frame guide rods are respectively inserted into the two corner mold through holes through shaft sleeves; the second side plate is vertically connected to the first side plate.

[0050] In some embodiments, there are two CD-direction sliding frames, and two corner mold fixing members are symmetrically arranged on each CD-direction sliding frame, wherein the first side panels of the two corner mold fixing members on the same CD-direction sliding frame are arranged opposite to each other, and the second side panels of the two adjacent corner mold fixing members on different CD-direction sliding frames are arranged opposite to each other.

[0051] In some embodiments, a second connecting seat through hole is provided on one of the connecting seats on the side of the second CD guide rod, and the CD sliding frame end plate also includes a connecting lug portion, and the connecting lug portions are all provided with lug holes, and the connecting lug portions are located on the CD guide sleeve side of the CD sliding frame end plate, and the adjusting device includes: a CD reversing mechanism, and the CD reversing mechanism includes: a first CD forward and reverse screw rod, a second CD forward and reverse screw rod, a CD transmission device and a CD adjustment handle. The first CD-direction forward and reverse screw rod is connected to the connecting seats on both sides of the first CD guide rod through a bearing seat and is inserted into the two lug holes on the same side through forward and reverse rotating T-nuts; the second CD-direction forward and reverse screw rod is connected to the connecting seats on both sides of the second CD guide rod through a bearing seat, one end passes through the through hole of the second connecting seat, and is inserted into the two lug holes on the other side through forward and reverse rotating T-nuts; the CD-direction forward and reverse screw rod is connected to the first CD-direction forward and reverse screw rod and the second CD-direction forward and reverse screw rod so that the first CD-direction forward and reverse screw rod and the second CD-direction forward and reverse screw rod rotate synchronously; the CD-direction forward and reverse screw rod is installed at one end of the second CD-direction forward and reverse screw rod that passes through the connecting seat, and is used to adjust the two CD-direction sliding frames along the direction of the first CD guide rod.

[0052] In some embodiments, a forward and reverse screw rod through hole is also opened between the two corner mold through holes on the first side plate, and the adjusting device also includes: an MD direction reversing mechanism, and the MD direction reversing mechanism includes: a sliding shaft, two sliding frame forward and reverse screw rods, two pairs of first bevel gears, a second bevel gear and an MD direction adjustment handle. One end of the sliding shaft passes through and is rotatably connected to a connecting seat on one side of the first CD guide rod, and the sliding shaft is parallel to the first CD guide rod; each of the forward and reverse screw rods of the sliding frame is inserted into the two forward and reverse screw rod through holes on the same CD sliding frame through a pair of forward and reverse rotating T-shaped nuts, and both ends of each CD sliding frame can be rotatably connected to the two CD sliding frame end plates on the same CD sliding frame, and the side close to the sliding shaft passes through the CD sliding frame end plate; each of the first bevel gear is arranged on the forward and reverse screw rods of the sliding frame passing through the CD sliding frame end plate, and each of the second bevel gear is correspondingly arranged on the CD sliding frame end plate where the first bevel gear is located to mesh with the first bevel gear, wherein each of the second bevel gear is provided with a bevel gear hole; the MD direction adjustment handle is installed on the sliding shaft on the connecting seat passing through one side of the first CD guide rod; wherein the sliding shaft is sequentially inserted into the two bevel gear holes on the same side to drive the two forward and reverse screw rods of the sliding frame to rotate synchronously when it rotates.

[0053] In some embodiments, the carton forming mother mold further includes: an MD sliding frame, the MD sliding frame including: two MD sliding frame end plates and two MD sliding frame guide rods. Each of the MD sliding frame end plates includes an MD guide sleeve; the two MD sliding frame guide rods are respectively connected to the two MD sliding frame end plates; wherein the MD sliding frame is respectively connected to the first MD guide rod and the second MD guide rod through the MD guide sleeves at both ends, so as to be able to slide along the first MD guide rod and the second MD guide rod.

[0054] In some embodiments, a long hole is opened on the second side plate of the corner mold fixing piece, and there are two MD-direction sliding frames. The two MD-direction sliding frame guide rods of each MD-direction sliding frame pass through the two symmetrical long holes of the second side plates to move synchronously with the corner mold fixing piece.

[0055] In some embodiments, each of the corner mold fixing members further includes: a third side plate, the third side plate is parallel to the first side plate, and is sleeved on the two CD-direction sliding frame guide rods on the same side.

[0056] In some embodiments, the carton forming mother mold further includes: four first glue pressing mechanisms and four second glue pressing mechanisms. The four first glue pressing mechanisms are symmetrically arranged on the third side plate, respectively, for compacting the glue spots between the side paperboard and the main paperboard along the direction of the first CD guide rod; the four second glue pressing mechanisms are symmetrically arranged on the second side plate, respectively, for compacting the glue spots between the side paperboard and the main paperboard along the direction of the first MD guide rod.

[0057] In some embodiments, the first glue pressing mechanism includes: a first glue pressing plate and a first glue pressing cylinder. The first glue pressing plate is perpendicular to the third side plate and faces the molding area of ​​the carton molding mother mold; the first glue pressing cylinder is disposed on the third side plate and connected to the first glue pressing plate through a piston to drive the first glue pressing plate to reciprocate toward the molding area of ​​the carton molding mother mold.

[0058] In some embodiments, the second glue pressing mechanism includes: a second glue pressing plate and a second glue pressing cylinder. The second glue pressing plate is perpendicular to the second side plate and faces the molding area of ​​the carton molding mother mold; the second glue pressing cylinder is disposed on the second side plate and connected to the second glue pressing plate through a piston to drive the second glue pressing plate to reciprocate toward the molding area of ​​the carton molding mother mold along a moving direction perpendicular to the first glue pressing plate.

[0059] In some embodiments, the carton forming mother mold further comprises: a one-way mechanism, which comprises: a blocking portion and a one-way rotating portion. The blocking portion is disposed on the third side plate on the upper side of the first glue pressing plate; the one-way rotating portion is rotatably disposed on the third side plate; wherein, when the carton male mold is punching the paperboard, the one-way rotating portion can rotate toward the forming area of ​​the carton forming mother mold, and when the carton male mold is withdrawn, the one-way rotating portion stops at the blocking portion to prevent the paperboard from being brought out of the carton forming mother mold.

[0060] In some embodiments, the carton forming mother mold further includes: a folding and pressing module, wherein there are four folding and pressing modules, each of which is arranged at one of the corner mold fixing parts and is used for stamping and forming a three-piece carton.

[0061] In some embodiments, the folding and pressing module includes: a first forming plate, a second forming plate and a third forming plate. The first forming plate is connected to the second side plate; the second forming plate is connected to the first side plate; the third forming plate is connected to the third side plate; wherein the third forming plates of two adjacent folding and pressing modules are plugged together.

[0062] In some embodiments, the three-piece carton forming machine further comprises: a carton discharging device; the carton discharging device comprises: a carton discharging conveying device, a carton discharging grabbing device and a carton discharging conveying device. The carton discharging grabbing device can be slidably arranged on the carton discharging conveying device, and is used to grab the carton formed on the carton forming mother mold; the carton discharging conveying device, the carton discharging conveying device is located at the lower side of the carton discharging conveying device, and is used to convey the carton placed by the carton discharging grabbing device.

[0063] In some embodiments, the unpacking conveying device comprises: an unpacking base plate, an unpacking synchronous conveyor belt and an unpacking power device. The unpacking base plate extends from the carton forming mother mold to the unpacking conveying device; the unpacking synchronous conveyor belt is arranged on the unpacking base plate along the length direction of the unpacking base plate; the unpacking power device is connected to the unpacking synchronous conveyor belt to drive the unpacking synchronous conveyor belt to rotate.

[0064] In some embodiments, the out-of-box grabbing device comprises: an out-of-box sliding portion, an out-of-box supporting portion, and an out-of-box suction cup. The out-of-box sliding portion can be slidably arranged on the out-of-box synchronous conveyor belt; the out-of-box supporting portion is connected to the out-of-box sliding portion; the out-of-box suction cup is arranged at one end of the out-of-box supporting portion away from the out-of-box sliding portion, and is used to grab the carton from the carton forming mother mold.

[0065] The three-piece carton forming machine provided in the embodiment of the present disclosure can achieve the following technical effects:

[0066] As provided above, the main paperboard is sucked from the main paperboard bin by the pick-and-place device and placed on the conveyor. The conveyor transports the main paperboard to the carton forming female mold, and then the side paperboard pick-and-place device sucks the side paperboard from the side paperboard bin and cooperates with the side paperboard bending mechanism to bend it at the carton male mold and enter the carton forming female mold. Under the joint action of the carton male mold and the carton forming female mold, the corresponding carton is formed and then output through the box discharging device. This whole process is fully automated.

[0067] The guard plate adjustment device of the main paperboard bin adjusts the first side guard plate and the second side guard plate by means of positive and negative screw rods and T-shaped nuts, so that the distance between the first side guard plate and the second side guard plate can be manually changed to adapt to main paperboards of different sizes. The conveying adjustment device also adjusts the conveying and holding device by means of positive and negative screw rods and T-shaped nuts, so that the distance between the first conveying and holding device and the second conveying and holding device can be manually changed to adapt to the conveying of main paperboards of different sizes.

[0068] The conveying device can increase the stroke of the pusher by adding an extension rod at the end of the conveying rod, so as to adapt to materials of different sizes, such as main paperboard, to be pushed to the appropriate position for stamping, without adjusting the position of the conveying device as a whole.

[0069] The pick-and-place device has a compact structure, small load inertia force, and good mechanism rigidity, and is suitable for high-speed pick-and-place of materials.

[0070] The side paperboard bin adopts a pressing plate device which relies on gravity to compact the side paperboard, which has good compaction effect and saves energy.

[0071] The side paperboard bending mechanism cooperates with the side paperboard picking and placing device to bend the side paperboard at the male mold module. The whole process is controlled, which increases the yield rate of carton production.

[0072] The corner mold fixings of the carton forming master mold can adapt to the molding of cartons of different sizes, and are easy to replace and have good compatibility. The carton forming master mold can easily adjust the CD sliding frame along two vertical directions through the CD direction reversing mechanism and the MD direction reversing mechanism, so as to facilitate the adjustment of the molding space in the carton forming master mold to adapt to the molding of cartons of different sizes and types. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0074] Figure 1 A schematic diagram of a main paperboard bin of an embodiment of the present disclosure is shown;

[0075] Figure 2 A schematic diagram of a transmission device according to an embodiment of the present disclosure is shown;

[0076] Figure 3 Another schematic diagram of a conveying device according to an embodiment of the present disclosure is shown;

[0077] Figure 4 The present disclosure embodiment is shown Figure 3 A partial enlarged view of part A;

[0078] Figure 5 The present disclosure embodiment is shown Figure 3 A partial enlarged view of part B;

[0079] Figure 6 A schematic diagram of a pick-and-place device according to an embodiment of the present disclosure is shown;

[0080] Figure 7 Another schematic diagram of a pick-and-place device according to an embodiment of the present disclosure is shown;

[0081] Figure 8 Another schematic diagram of a pick-and-place device according to an embodiment of the present disclosure is shown;

[0082] Fig. 9 A schematic diagram showing a side paperboard bending mechanism of an embodiment of the present disclosure is shown;

[0083] Fig.10 A schematic diagram showing the cooperation of a side paperboard magazine, a carton male mold and a side paperboard taking and placing device according to an embodiment of the present disclosure is shown;

[0084] Fig.11 Another schematic diagram showing the cooperation between a side paperboard magazine, a carton male mold and a side paperboard taking and placing device according to an embodiment of the present disclosure;

[0085] Fig.12 A schematic diagram of a side paperboard bin of an embodiment of the present disclosure is shown;

[0086] Fig.13 A schematic diagram showing a basic frame of a carton forming master mold according to an embodiment of the present disclosure;

[0087] Fig.14 A schematic diagram of a CD-direction sliding frame of a carton forming master mold according to an embodiment of the present disclosure is shown;

[0088] Fig.15 A schematic diagram of an MD-direction sliding frame of a carton forming mother mold according to an embodiment of the present disclosure is shown;

[0089] Fig.16 A schematic diagram showing a first glue pressing mechanism and a second glue pressing mechanism of a carton forming mother mold according to an embodiment of the present disclosure is shown;

[0090] Fig.17 A schematic diagram showing a one-way mechanism of a carton forming mother mold according to an embodiment of the present disclosure;

[0091] Fig.18 A schematic diagram showing a folding and pressing module of a carton forming mother mold according to an embodiment of the present disclosure is shown;

[0092] Fig.19 A schematic diagram of a carton forming master mold according to an embodiment of the present disclosure is shown;

[0093] Fig. 20 Another schematic diagram of a carton forming master mold according to an embodiment of the present disclosure is shown;

[0094] Fig.21 The present disclosure embodiment is shown Fig. 20 Schematic diagram of part A;

[0095] Fig. 22 A schematic diagram of a box discharging device according to an embodiment of the present disclosure is shown;

[0096] Fig.23 A schematic diagram of a three-piece carton forming machine according to an embodiment of the present disclosure is shown;

[0097] Fig.24 A structural schematic diagram showing a three-piece carton forming process according to an embodiment of the present disclosure;

[0098] Fig.25 A flow chart of a three-piece carton forming process according to an embodiment of the present disclosure is shown.

[0099] Reference numerals:

[0100] 1. Main paperboard bin; 11. Bin rack; 111. First supporting profile; 112. Second supporting profile; 113. First upper connecting plate; 114. Second upper connecting plate; 115. First lower connecting plate; 116. Second lower connecting plate; 12. Side guard plate; 121. First side guard plate; 122. Second side guard plate; 13. Guide device; 131. First guide shaft; 132. Second guide shaft; 133. Third guide shaft; 14. Guard plate adjustment device; 141. First positive and negative screw rod; 142. Second positive and negative screw rod; 143. Transmission device; 144. Guard plate rotating handle; 15. Conveying adjustment device; 151. Conveying adjustment positive and negative screw rod; 152. Conveying rotating handle; 16. Conveying holding device; 161. First conveying holding device; 162. Second conveying holding device;

[0101] 2. Conveying device; 21. Conveying device frame; 211. Molding station; 212. Conveying station; 213. First conveying guide rail; 214. Second conveying guide rail; 22. Linear drive mechanism; 221. Conveying mechanism; 2211. Conveying rod; 2212. Driving wheel; 2213. Driven wheel; 2214. Belt; 222. Servo motor; 223. Adapter; 2231. Belt connecting part; 22311. Limiting groove; 223 2. Extension rod connection part; 23. Pushing member; 231. Push plate; 232. Support plate; 233. Avoidance baffle; 24. Extension rod; 25. Sliding mechanism; 251. Slide rail; 252. Sliding block; 26. Support assembly; 27. Bearing assembly; 271. Connecting plate; 272. Bearing rod; 28. Rack adjustment device; 281. Rack forward and reverse screw rods; 282. Rack transmission device; 283. Rack adjustment handle; 29. ​​Positioning block;

[0102] 3. Pick-and-place device; 31. Power mechanism; 32. Extraction device; 321. Bearing member; 322. Grasping device; 33. Link mechanism; 331. Swing arm; 332. Sliding seat; 333. Sliding rod device; 3331. Sliding rod; 3332. First connecting end plate; 3333. First sliding rod; 3334. Second sliding rod; 3335. Second connecting end plate; 334. First rotating shaft; 335. Second rotating shaft; 34. Interference pipeline; 341. Branch pipe; 342. First transfer device; 343. Second transfer device; 344. First trunk pipe; 345. Second trunk pipe; 346. Third trunk pipe; 347. Bracket;

[0103] 4. Side paperboard bin; 41. Side paperboard bin rack; 42. Side paperboard side guard plate; 43. Pressing plate device; 431. Pressing plate sliding rod; 432. Pressing plate slider; 433. Pressing plate; 44. Paper support plate; 441. Support plate; 442. Baffle plate;

[0104] 5. Side cardboard taking and placing device;

[0105] 6. Carton male mold; 61. Male mold driving device; 62. Male mold module; 621. Male mold forming plate; 622. Male mold guard plate; 623. Driving connecting plate;

[0106] 7. Carton forming mother mold; 71 basic frame; 711. First CD guide rod; 712. Second CD guide rod; 713. First MD guide rod; 714. Second MD guide rod; 715. Connecting seat; 7151. First connecting seat through hole; 7152. Second connecting seat through hole; 7153. Fixing part; 716. Adjusting unit; 72. CD sliding frame; 721. CD sliding frame end plate; 7211. Connecting lug part; 72111. Lug hole; 722. CD sliding frame guide rod; 723. CD guide sleeve; 73. Corner mold fixing part; 731. First side plate; 7311. Corner mold through hole; 732. Second side plate; 7321. Long strip hole; 733. Third side plate; 74. Adjusting device; 741. CD reversing mechanism; 7411. First CD forward and reverse screw rod; 7412. Second CD 7413, CD direction transmission device; 7414, CD direction adjustment handle; 742, MD direction reversing mechanism; 7421, sliding shaft; 7422, sliding rack forward and reverse screw rod; 7423, first bevel gear; 7424, second bevel gear; 74241, bevel gear hole; 7425, MD direction adjustment handle; 75, MD direction sliding rack; 751, MD direction sliding rack end plate; 7511, MD guide 752, MD sliding frame guide rod; 76, first glue pressing mechanism; 761, first glue pressing plate; 762, first glue pressing cylinder; 77, second glue pressing mechanism; 771, second glue pressing plate; 772, second glue pressing cylinder; 78, one-way mechanism; 781, blocking part; 782, one-way rotating part; 79, folding and pressing module; 791, first forming plate; 792, second forming plate; 793, third forming plate;

[0107] 8. Out-of-box device; 81. Out-of-box conveying device; 811. Out-of-box substrate; 812. Out-of-box synchronous conveyor belt; 813. Out-of-box power device; 82. Out-of-box grabbing device; 821. Out-of-box sliding part; 822. Out-of-box supporting part; 823. Out-of-box suction cup; 83. Out-of-box conveying device;

[0108] 9. Side paperboard bending mechanism; 91. Side paperboard bending power device; 92. Side paperboard bending plate. DETAILED DESCRIPTION

[0109] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0110] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0111] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0112] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0113] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0114] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0115] Unless otherwise stated, the term "plurality" means two or more.

[0116] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0117] like Fig.23 As shown, the embodiment of the present disclosure provides a three-piece carton forming machine. The three-piece carton forming machine includes a frame, a main paperboard bin 1, a conveying device 2, a pick-and-place device 3, two side paperboard bins 4, a side paperboard pick-and-place device 5, a carton male mold 6, a carton forming female mold 7 and a carton discharging device 8. The main paperboard bin 1 is arranged on the frame for placing the main paperboard to be processed. The conveying device 2 is arranged on the lower side of the discharging part of the main paperboard bin 1, for conveying the main paperboard taken out from the main paperboard bin 1. The pick-and-place device 3 is arranged on the upper side of the conveying device 2, for taking out the main paperboard from the main paperboard bin 1 and placing it on the conveying device 2. The two side paperboard bins 4 are used to place the side paperboard to be processed. The side paperboard pick-and-place device 5 is arranged on the lower side of the side paperboard bin 4, for taking out the side paperboard from the side paperboard bin 4. The carton male mold 6 is arranged between the two side paperboard bins 4. The carton forming female mold 7 is arranged on the lower side of the carton male mold 6, for forming the main paperboard and the side paperboard into a carton. The box discharging device 8 is arranged at the lower side of the carton forming mother mold 7, and is used for conveying the formed carton out.

[0118] Specifically, the frame can be a rectangular frame structure, which is arranged outside the entire three-piece carton forming machine and is used to fix the components of various parts of the three-piece carton forming machine. Fig.23 In the preferred embodiment shown, from left to right are the main paperboard bin 1, the conveying device 2, the carton forming mother mold 7 and the unpacking device 8. Among them, the pick-up and placement device 3 is located on the upper part of the conveying device 2. The two side paperboard bins 4 are located on the upper outer side of the carton forming mother mold 7. The carton male mold 6 is located on the upper side of the carton forming mother mold 7 and between the two side paperboard bins 4. In addition, based on the limitations of the site, it can also be in other forms and directions, as long as the entire conveying and forming process can be achieved. The control system communicates and connects the main paperboard bin 1, the conveying device 2, the pick-up and placement device 3, the dispensing system, the side paperboard bin 4, the side paperboard pick-up and placement device 5, the carton male mold 6, the carton forming mother mold 7 and the unpacking device 8 so as to be able to control these components and their subordinate components to complete the corresponding work.

[0119] like Figure 1As shown, preferably, the main paperboard silo 1 includes a silo frame 11, side guard plates 12, a guide device 13, a guard plate adjustment device 14, a conveying adjustment device 15 and a conveying and containing device 16. The silo frame 11 is installed on the frame. The side guard plates 12 are installed on both sides of the silo frame 11 to protect the sides of the main paperboard. The guide device 13 is arranged on the silo frame 11 to support the main paperboard and guide the side guard plates 12 to move to both sides. The guard plate adjustment device 14 is arranged on the silo frame 11 to adjust the distance between the side guard plates 12. The conveying adjustment device 15 is arranged on the silo frame 11. The conveying and containing device 16 is installed on the conveying adjustment device 15 and the guide device 13 to convey the main paperboard. Among them, the conveying adjustment device 15 can adjust the conveying and containing device 16 to move along the guide device 13.

[0120] Specifically, the silo rack 11 is located at the two sides of the main paperboard silo 1, and is generally two support racks in an inverted Z shape. Its strength can support other components of the entire main paperboard silo 1. The two inverted Z-shaped support racks are symmetrically arranged with each other. There can be two side guard plates 12, and the two side guard plates 12 are symmetrically arranged on the branches at the bottom of the two inverted Z-shaped support racks. The side guard plates 12 can prevent the main paperboard from moving to the outside of the side guard plates 12 after the main paperboard is placed in the main paperboard silo 1. The guide device 13 and the silo rack 11 together constitute the support frame of the entire main paperboard silo 1, wherein the setting of the guide device 13 can increase the firmness of the silo rack 11 on the one hand, and guide other components to slide on it on the other hand. The guard plate adjustment device 14 is a combination of a set of forward and reverse screw rods and forward and reverse rotating T-shaped nuts, which can manually adjust the relative positions of the two side guard plates 12. Thereby, main paperboards of different specifications can be placed between the two side guard plates 12, and the size of the main paperboard can be adapted to prevent it from moving between the two side guard plates 12. The conveying and holding device 16 can be used to convey the main carton. The conveying and adjusting device 15 is also a combination of a set of forward and reverse screw rods and forward and reverse rotating T-shaped nuts, which can manually adjust the relative position of the conveying and holding device 16.

[0121] like Figure 1 As shown, preferably, the silo rack 11 includes a first supporting profile 111 and a second supporting profile 112, a first upper connecting plate 113 and a second upper connecting plate 114, and a first lower connecting plate 115 and a second lower connecting plate 116. The first supporting profile 111 is parallel to the second supporting profile 112, one end of the first upper connecting plate 113 is connected to the first supporting profile 111, and the other end is provided with a first through hole, one end of the second upper connecting plate 114 is connected to the second supporting profile 112, and the other end is provided with a second through hole. One end of the first lower connecting plate 115 is connected to the first supporting profile 111, and the other end is provided with a third through hole and a fourth through hole, and one end of the second lower connecting plate 116 is connected to the second supporting profile 112, and the other end is provided with a fifth through hole and a sixth through hole.

[0122] Specifically, the silo rack 11 as described above may be an inverted Z-shaped structure. The first support profile 111 is arranged along an inclined direction to the vertical direction. The first upper connecting plate 113 is fixedly connected to the upper end of the first support profile 111 and extends in a direction away from the silo. The first lower connecting plate 115 is fixedly connected to the lower end of the first support profile 111 and extends in a direction into the silo. For example, the inclination angle of the first support profile 111 may be 95°, 100°, etc., with the first upper connecting plate 113 and the first lower connecting plate 115. Of course, other values ​​are also possible, depending on the space requirements and strength requirements of the main paperboard silo 1. The second support profile 112, the second upper connecting plate 114 and the second lower connecting plate 116 are all arranged symmetrically to the first support profile 111, the first upper connecting plate 113 and the first lower connecting plate 115, respectively. No detailed description is given here.

[0123] like Figure 1 As shown, preferably, the guide device 13 includes a first guide shaft 131, a second guide shaft 132 and a third guide shaft 133. The first guide shaft 131 is inserted into the third through hole and the fifth through hole through a circular sleeve. The second guide shaft 132 is inserted into the fourth through hole and the sixth through hole through a circular sleeve. The third guide shaft 133 is inserted into the first through hole and the second through hole through a circular sleeve. Among them, the first guide shaft 131 is parallel to the second guide shaft 132 and the third guide shaft 133.

[0124] Specifically, the first guide shaft 131, the second guide shaft 132 and the third guide shaft 133 are all long cylindrical shafts. In a preferred embodiment, the first guide shaft 131, the second guide shaft 132 and the third guide shaft 133 have the same length and the same diameter. The guide device 13 can support the entire silo, and the direction is different from that of the silo frame 11, so the stability of the silo frame 11 can be ensured. At the same time, the guide device 13 can also allow the components it supports to slide on it, thereby playing a convenient adjustment role.

[0125] like Figure 1 As shown, preferably, a seventh through hole is further provided between the third through hole and the fourth through hole of the first lower connecting plate 115, an eighth through hole is further provided between the fifth through hole and the sixth through hole of the second lower connecting plate 116, a ninth through hole is further provided on the first upper connecting plate 113, and a tenth through hole is further provided on the second upper connecting plate 114. The guard plate adjustment device 14 includes: a first forward and reverse screw rod 141 and a second forward and reverse screw rod 142. The first forward and reverse screw rod 141 is plugged into the seventh through hole and the eighth through hole through two forward and reverse rotating T-shaped nuts. The second forward and reverse screw rod 142 is plugged into the ninth through hole and the tenth through hole through two forward and reverse rotating T-shaped nuts, and the second forward and reverse screw rod 142 is parallel to the first forward and reverse screw rod 141.

[0126] Specifically, the first positive and negative screw rod 141 has two sections of threads with different rotation directions on both sides, and the middle part can be vacated and needs to be tapped to form a transition area. The first positive and negative screw rod 141 will pass through the first lower connecting plate 115 and the second lower connecting plate 116, and holes are opened on the first lower connecting plate 115 and the second lower connecting plate 116 and a T-shaped nut is arranged in the hole, so that the first lower connecting plate 115 and the second lower connecting plate 116 can be moved relative to or toward each other. The relative or opposite movement of the two can drive the two side guard plates 12 arranged thereon to move relative to or toward each other, thereby adjusting the distance between the two side guard plates 12. In the same way, the second positive and negative screw rod 142 has two sections of threads with different rotation directions on both sides, and the middle part can be vacated and needs to be tapped to form a transition area. The second forward and reverse screw rod 142 will pass through the first upper connecting plate 113 and the second upper connecting plate 114, and a hole is opened on the first upper connecting plate 113 and the second upper connecting plate 114 and a T-shaped nut is arranged in the hole, so that the first upper connecting plate 113 and the second upper connecting plate 114 can move relative to or toward each other. Like the first lower connecting plate 115 and the second lower connecting plate 116, the two side guard plates 12 are driven to move relative to or toward each other.

[0127] like Figure 1 As shown, preferably, the guard plate adjustment device 14 also includes: a transmission device 143, which is installed at the end of the first forward and reverse screw rod 141 and the second forward and reverse screw rod 142 on the same side, so that the first forward and reverse screw rod 141 and the second forward and reverse screw rod 142 rotate synchronously.

[0128] Specifically, the transmission device 143 can preferably be a synchronous conveyor belt. In actual equipment, the height of the second forward and reverse screw rod 142 is relatively high and not easy to adjust. The solution of the present application can be used to adjust the first forward and reverse screw rod 141 to achieve synchronous rotation of the first forward and reverse screw rod 141 and the second forward and reverse screw rod 142, which is convenient and quick.

[0129] like Figure 1 As shown, preferably, the guard plate adjustment device 14 also includes: a guard plate rotating handle 144, which is arranged at one end of the first forward and reverse screw rod 141 away from the transmission device 143, and is used to manually adjust the distance between the first supporting profile 111 and the second supporting profile 112.

[0130] Specifically, the guard plate rotation handle 144 can realize the rotation of the first forward and reverse screw rod 141 by manual adjustment. Since the first forward and reverse screw rod 141 and the second forward and reverse screw rod 142 are adjusted synchronously, the adjustment of the entire silo rack 11 is realized. Therefore, the two side guard plates 12 installed thereon are also adjusted accordingly.

[0131] like Figure 1As shown, preferably, the side guard plate 12 includes a first side guard plate 121 and a second side guard plate 122. The first side guard plate 121 is connected to the first supporting profile 111 and the first lower connecting plate 115. The second side guard plate 122 is connected to the second supporting profile 112 and the second lower connecting plate 116.

[0132] Specifically, there can be two side guard plates 12. The side guard plates 12 are slightly wider than the main paperboard as a whole. The side of the first side guard plate 121 is fixedly connected to the first supporting profile 111. The bottom of the first side guard plate 121 is fixedly connected to the first lower connecting plate 115. Similarly, the side of the second side guard plate 122 is fixedly connected to the second supporting profile 112. The bottom of the second side guard plate 122 is fixedly connected to the second lower connecting plate 116.

[0133] like Figure 1 As shown, preferably, an eleventh through hole is further provided between the fourth through hole and the seventh through hole of the first lower connecting plate 115, and a twelfth through hole is further provided between the sixth through hole and the eighth through hole of the second lower connecting plate 116, and the conveying adjustment device 15 includes: a conveying adjustment forward and reverse screw rod 151, which is inserted into the eleventh through hole and the twelfth through hole through two forward and reverse rotating T-nuts.

[0134] Specifically, the two sides of the conveying adjustment forward and reverse screw rod 151 are two sections of threads with different rotation directions, and the middle part can be left empty and needs to be tapped to form a transition area. The conveying adjustment forward and reverse screw rod 151 adjusts the conveying holding device 16 by rotating the T-shaped nut forward and reversely.

[0135] like Figure 1 As shown, preferably, the conveying adjustment device 15 further includes: a conveying rotating handle 152 , which is disposed at one end of the conveying adjustment forward and reverse screw rod 151 and is used for manually adjusting the conveying containing device 16 .

[0136] Specifically, the function of the conveying rotating handle 152 is similar to the above-described guard plate rotating handle 144. Its function is to manually rotate the conveying adjustment forward and reverse screw rod 151.

[0137] like Figure 1 As shown, preferably, the conveying and containing device 16 includes a first conveying and containing device 161 and a second conveying and containing device 162. The first conveying and containing device 161 is respectively sleeved on the first guide shaft 131 and the second guide shaft 132 through two circular sleeves, and is sleeved on the conveying and adjusting forward and reverse screw rod 151 through forward and reverse rotation T-shaped nuts. The second conveying and containing device 162 is respectively sleeved on the first guide shaft 131 and the second guide shaft 132 through two circular sleeves, and is sleeved on the conveying and adjusting forward and reverse screw rod 151 through forward and reverse rotation T-shaped nuts.

[0138] Specifically, the first conveying and containing device 161 and the second conveying and containing device 162 can be of the same shape and dimension, and are symmetrically arranged. Under the action of the conveying and adjusting forward and reverse screw rod 151, the two can move relative to or towards each other.

[0139] In addition, an upper material stopper rod is provided on the upper part of the main paperboard bin 1 for upper material stopper of the main paperboard.

[0140] The first side guard plate 121 and the second side guard plate 122 of the main paperboard silo 1 of the present application are integrated without a gap in the middle, so that the side guard plate 12 can play a protective role when processing cartons of different models, and the main paperboard will not be leaked. The guard plate adjustment device 14 adjusts the first side guard plate 121 and the second side guard plate 122 by means of positive and negative screw rods and T-shaped nuts, so that the distance between the first side guard plate 121 and the second side guard plate 122 can be manually changed to adapt to main paperboards of different sizes. The conveying adjustment device 15 also adjusts the conveying holding device 16 by means of positive and negative screw rods and T-shaped nuts, so that the distance between the first conveying holding device 161 and the second conveying holding device 162 can be manually changed to adapt to the conveying of main paperboards of different sizes. The silo frame 11 is adjusted by being connected to the guide device 13, so that there is no need to process the positioning plane, which reduces costs.

[0141] like Figures 2 to 5 As shown, preferably, the conveyor 2 includes a conveyor frame 21, a linear drive mechanism 22, a pusher 23 and an extension rod 24. The conveyor frame 21 includes a molding station 211 and a conveying station 212 for conveying materials to the molding station 211; the linear drive mechanism 22 is arranged on the conveyor frame 21; the initial position of the pusher 23 is located on the conveying station 212 of the conveyor frame 21; one end of the extension rod 24 is connected to the pusher 23, and the other end is connected to the linear drive mechanism 22, for extending the pushing stroke of the pusher 23; wherein the linear drive mechanism 22 drives the extension rod 24 and the pusher 23 to make linear reciprocating movements in the conveyor frame 21, so as to push materials of different sizes into the molding station 211.

[0142] Specifically, the conveyor 2 conveys the main paperboard taken out from the end of the main paperboard bin 1 and placed in the conveying station 212 to the carton forming mother mold 7, that is, the molding station 211. The linear drive mechanism 22 can act on the extension rod 24, and the pusher 23 is located at the end of the extension rod 24. In this way, after the main paperboard is placed in the conveying station 212, the pusher 23 starts to push the main paperboard to move along the length direction of the conveyor frame 21 until it reaches the molding station 211 when needed.

[0143] like Figures 2 to 5As shown, preferably, the linear drive mechanism 22 includes a conveying mechanism 221 and a servo motor 222. The conveying mechanism 221 includes a conveying rod 2211 connected to the conveying device frame 21, a driving wheel 2212 installed on one side of the conveying rod 2211, a driven wheel 2213 installed on the other side of the conveying rod 2211, and a belt 2214 sleeved between the driving wheel 2212 and the driven wheel 2213 and connected to the extension rod 24. The servo motor 222 is installed on the conveying rod 2211, and the output shaft of the servo motor 222 is connected to the driving wheel 2212.

[0144] Specifically, the linear drive mechanism 22 as a whole extends from the bottom of the main paperboard material bin 1 to the carton forming mother mold 7. The conveying mechanism 221 is generally a long strip structure. The transmission rod 2211 is a long strip rod. One end of the transmission rod 2211 is located at the lower part of the main paperboard material bin 1. A driving wheel 2212 is provided therein, and the driving wheel 2212 is connected to the output shaft of the servo motor 222. A driven wheel 2213 is fixedly connected to the other end of the transmission rod 2211 close to the carton forming mother mold 7. A belt 2214 is provided on the driving wheel 2212 and the driven wheel 2213. The belt 2214 is a synchronous belt. The transmission rod 2211 on the side of the driven wheel 2213 is also connected to an extension rod 24, and the other side of the extension rod 24 is connected to the pusher 23. In this way, driven by the servo motor 222, the pusher 23 can realize reciprocating motion along the length direction of the transmission rod 2211. Initially, the pusher 23 is located behind the conveying station 212 , so that after the main paperboard is placed in place, the pusher 23 pushes the main paperboard to move toward the molding station 211 .

[0145] like Figures 2 to 5 As shown, preferably, the belt 2214 is a synchronous belt, and the linear drive mechanism 22 also includes: an adapter 223, the adapter 223 includes a belt connecting portion 2231 and an extension rod connecting portion 2232 connected to the belt connecting portion 2231, wherein the extension rod 24 is connected to the extension rod connecting portion 2232, and a limiting groove 22311 is opened in the belt connecting portion 2231, and the groove wall of the limiting groove 22311 is embedded with limiting teeth, and the limiting teeth are engaged with the belt 2214.

[0146] Specifically, the synchronous belt is a belt with teeth. The belt connection part 2231 can be a vertical plate, and a limiting groove 22311 is provided in the vertical plate, and the limiting groove 22311 just fits the belt 2214 therein, and then a limiting tooth is provided in the limiting groove 22311, and the limiting tooth is engaged with the teeth of the synchronous belt to realize the movement of the adapter 223 and the belt 2214 together.

[0147] like Figures 2 to 5As shown, preferably, the conveying device 2 also includes: a sliding mechanism 25, which includes a slide rail 251 and a slider 252 slidably connected to the slide rail 251, wherein the slider 252 is connected to the adapter 223, and the slide rail 251 is connected to the conveying rod 2211 and parallel to the belt 2214.

[0148] Specifically, the sliding mechanism 25 reduces the swing of the pusher 23 during the pushing process and increases the stability of the material during the pushing process. The slide rail 251 is fixed to the conveying rod 2211, for example, it can be connected together by bolts. The slider 252 is connected to the adapter 223, and the adapter 223 is arranged on the belt 2214. On the one hand, the adapter 223 and the slider 252 can move together with the belt 2214. However, the slider 252 must move along the slide rail 251, so that the adapter 223 is prevented from shaking due to the shaking of the belt 2214.

[0149] like Figures 2 to 5 As shown, preferably, the push member 23 includes a push plate 231, a supporting plate 232 and an avoidance baffle 233. The push plate 231 is connected to one end of the extension rod 24 away from the linear drive mechanism 22; the supporting plate 232 is connected to the bottom of the push plate 231; the avoidance baffle 233 is connected to the top of the push plate 231; wherein, the avoidance baffle 233 and the push plate 231 form an obtuse angle.

[0150] Specifically, the push plate 231, the support plate 232 and the avoidance baffle 233 are combined to form a tiger's mouth-shaped structure. When the material enters the molding station 211, the support plate 232 supports the end of the material so that the end of the material is suspended. At this time, the support plate 232 can support the end of the material to ensure the stability of the material. When the material enters the molding station 211 for molding, the avoidance baffle 233 can form a gap with the upper surface of the material, providing an avoidance space so that the material can be smoothly separated from the pusher 23 during the molding process.

[0151] like Figures 2 to 5 As shown, preferably, the conveying device frame 21 includes a first conveying rail 213 and a second conveying rail 214 parallel to each other, and the conveying device 2 also includes: two support assemblies 26, each support assembly 26 is respectively connected to the first conveying rail 213 and the second conveying rail 214, for supporting materials.

[0152] Specifically, the first conveying guide rail 213 and the second conveying guide rail 214 are parallel to the conveying rod 2211. The support assembly 26 is a long strip of plate. It is installed on the inner side of the first conveying guide rail 213 and the second conveying guide rail 214. Materials, such as main paperboards, can be placed on the support assembly 26.

[0153] like Figures 2 to 5As shown, preferably, the conveying device 2 further includes: a bearing assembly 27, which includes four connecting plates 271 and two bearing rods 272. Every two connecting plates 271 are spaced and symmetrically arranged on the first conveying guide rail 213 and the second conveying guide rail 214, and each connecting plate 271 is provided with a bearing rod through hole. Each bearing rod 272 passes through the corresponding bearing rod through hole and is plugged into the first conveying guide rail 213 and the second conveying guide rail 214 to support the two supporting assemblies 26 and the linear drive mechanism 22.

[0154] Specifically, two connecting plates 271 are fixedly arranged on the lower side of the first conveying guide rail 213. Another two connecting plates 271 are fixedly arranged on the lower side of the second conveying guide rail 214. The two connecting plates 271 located on the lower side of the first conveying guide rail 213 and the two connecting plates 271 located on the lower side of the second conveying guide rail 214 are symmetrical. Each bearing rod 272 passes through the corresponding bearing rod through hole on the first conveying guide rail 213 and the second conveying guide rail 214 through a shaft sleeve, so that the first conveying guide rail 213 and the second conveying guide rail 214 can slide along the bearing rod 272. At the same time, the bearing rod 272 also plays the role of supporting the support assembly 26, the first conveying guide rail 213, the second conveying guide rail 214 and the linear drive mechanism 22 thereon.

[0155] like Figures 2 to 5 As shown, preferably, each connecting plate 271 is also provided with a rack forward and reverse screw rod through hole, and the conveying device 2 further includes: a rack adjustment device 28. The rack adjustment device 28 includes two rack forward and reverse screw rods 281, a rack transmission device 282 and a rack adjustment handle 283. Each rack forward and reverse screw rod 281 is respectively inserted into the two corresponding rack forward and reverse screw rod through holes on the connecting plate 271 through two forward and reverse rotating T-shaped nuts; the rack transmission device 282 connects the same side ends of the two rack forward and reverse screw rods 281, and is used to drive the two rack forward and reverse screw rods 281 to move synchronously. The rack adjustment handle 283 is arranged at one end of one of the rack forward and reverse screw rods 281, and is used to manually adjust the distance between the first conveying guide rail 213 and the second conveying guide rail 214.

[0156] Specifically, the frame adjustment device 28 is also adjusted by the forward and reverse screw rods in conjunction with the T-nuts. The frame forward and reverse screw rods 281 pass through the connecting plate 271. The two frame forward and reverse screw rods 281 are parallel to each other and to the bearing rod 272. When the first conveying guide rail 213 and the second conveying guide rail 214 need to be adjusted to adapt to the material size of the main paperboard of different sizes, the frame adjustment handle 283 is manually rotated, and the frame adjustment handle 283 drives the frame forward and reverse screw rods 281 connected thereto to rotate, and then drives the other frame forward and reverse screw rods 281 to rotate synchronously through the frame transmission device 282. In this way, the first conveying guide rail 213 and the second conveying guide rail 214 move relative to or toward each other. The structure of the frame transmission device 282 is similar to the transmission device 143, and can preferably be a synchronous belt.

[0157] like Figures 2 to 5 As shown, preferably, the conveying device 2 also includes: two positioning blocks 29, which are symmetrically arranged on the first conveying guide rail 213 and the second conveying guide rail 214 on both sides of the molding station 211, so as to slide along the first conveying guide rail 213 and the second conveying guide rail 214 and be locked after sliding into place.

[0158] Specifically, the positioning block 29 extends between the first conveying guide rail 213 and the second conveying guide rail 214. When the material is pushed, the position of the material is limited by the two positioning blocks 29. The position of the positioning block 29 is adjustable to accommodate materials of different sizes.

[0159] The conveying device 2 of the present application can increase the stroke of the pusher 23 by adding an extension rod 24 at the end of the conveying rod 2211, so as to adapt to materials of different sizes, such as the main paperboard, to be pushed to the appropriate position for stamping, without the need to adjust the position of the conveying device 2 as a whole, which is convenient and quick. The distance between the first conveying guide rail 213 and the second conveying guide rail 214 is adjusted by the frame adjustment device 28 to adapt to the placement of materials of different sizes, such as the main paperboard, without the need for changing the type.

[0160] like Figures 6 to 8 As shown, preferably, the pick-and-place device 3 includes a power mechanism 31, an extraction device 32 and a connecting rod mechanism 33. The power mechanism 31 is arranged on the frame; the extraction device 32 is used to extract and release materials; the connecting rod mechanism 33 includes: a swing arm 331, a slide seat 332 and a slide rod device 333, one end of the swing arm 331 is rotatably connected to the frame and connected to the power mechanism 31 through a first rotating shaft 334; the slide seat 332 is rotatably connected to the frame; one end of the slide rod device 333 is rotatably connected to the other end of the swing arm 331 through a second rotating shaft 335, and the other end is arranged on the extraction device 32 after passing through the slide seat 332.

[0161] Specifically, the power mechanism 31 can be a servo motor 222 or the like. The extraction device 32 is located at the front end of the entire pick-and-place device 3, close to the main paperboard bin 1, and can extract the main paperboard in the main paperboard bin 1 and release it to a suitable position, such as the conveying station 212. The connecting rod mechanism 33 is the action execution component of the entire pick-and-place device 3. The swing arm 331 is a long arm, and one end of the swing arm 331 is connected to the output shaft of the servo motor 222 through the first rotating shaft 334, so that it rotates around the first rotating shaft 334 under the drive of the servo motor 222. The seat body of the slide 332 is hinged to the frame, and the slide 332 has a through hole that allows the slide device 333 to pass through. And one end of the slide device 333 is rotatably connected to the end of the swing arm 331 away from the first rotating shaft 334 through the second rotating shaft 335. That is to say, the slide device 333 can rotate around the second rotating shaft 335. The other end of the slide device 333 is fixed to the extraction device 32. In this way, the servo motor 222 is turned on to drive the first rotating shaft 334 to rotate, and the first rotating shaft 334 drives the swing arm 331 thereon to swing. The slide rod device 333 connected to the swing arm 331 also swings and slides in the slide seat 332, thereby driving the extracting device 32 to extract the main paperboard and release it to the conveying station 212.

[0162] like Figures 6 to 8 As shown, preferably, the extraction device 32 includes a bearing member 321 and a gripping device 322. The bearing member 321 is connected to the other end of the slide bar device 333. The gripping device 322 is arranged on the bearing member 321 and is used to grip the material. The gripping device 322 is at least one vacuum suction cup or at least one pneumatic gripper.

[0163] Specifically, the bearing member 321 can be a frame composed of horizontal bars and vertical bars. It can also be a whole board. The gripping device 322 can be one or more. The multiple gripping devices 322 are preferably evenly distributed on the bearing member 321. The gripping device 322 can suck the main paperboard in the form of a vacuum suction cup, or can clamp the main paperboard in the form of a pneumatic clamp. Its power comes from a pneumatic source.

[0164] like Figures 6 to 8As shown, preferably, the pick-and-place device 3 also includes: a perturbative pipeline 34, which includes at least one branch pipe 341, a first transferor 342, a second transferor 343, a first trunk pipe 344, a second trunk pipe 345 and a third trunk pipe 346. At least one branch pipe 341 is arranged on the bearing member 321 and is connected to at least one vacuum suction cup or at least one pneumatic clamp one by one; the first transferor 342 is fixed on the frame and has a first axis that is collinear with the central axis of the first rotating shaft 334; the second transferor 343 is fixed on the swing arm 331 or the second rotating shaft 335 and has a second axis that is collinear with the central axis of the second rotating shaft 335; one end of the first trunk pipe 344 is used to connect the vacuum pumping equipment and the other end is connected to the first transferor 342; one end of the second trunk pipe 345 is connected to the first transferor 342 and the other end is connected to the second transferor 343; one end of the third trunk pipe 346 is connected to the second transferor 343 and the other end is connected to each vacuum suction cup through at least one branch pipe 341. Among them, the first transfer device 342 can connect the first trunk pipe 344 and the second trunk pipe 345 and allow the second trunk pipe 345 to rotate around the first axis relative to the first trunk pipe 344, and the second transfer device 343 can connect the third trunk pipe 346 and the second trunk pipe 345 and allow the second trunk pipe 345 to rotate around the second axis relative to the third trunk pipe 346.

[0165] Specifically, the second trunk pipe 345 can rotate synchronously with the swing arm 331 with the help of the first transfer 342 and the second transfer 343, thereby ensuring that the entire interfering pipeline 34 does not interfere with the movement of the connecting rod mechanism 33. In a preferred embodiment, the first transfer 342 includes a rotary elbow joint and an elbow, wherein the rotary elbow joint includes a fixed pipe portion fixed to the frame by a bracket 347 and arranged along the first axis and a rotating pipe portion connected to the fixed pipe portion and capable of rotating around the first axis, the rotating pipe portion is used to connect the second trunk pipe 345, and the fixed pipe portion is connected to the first trunk pipe 344 through the elbow. In this way, the combination of the rotary elbow joint and the elbow can connect the first trunk pipe 344 and the second trunk pipe 345 and allow the second trunk pipe 345 to rotate around the first axis relative to the first trunk pipe 344.

[0166] In a preferred embodiment, the second transfer device 343 includes a rotary elbow joint and an adapter, wherein the rotary elbow joint also includes a fixed pipe portion fixedly arranged on the swing arm 331 or the second rotating shaft 335 through the adapter and arranged along the second axis, and a rotating pipe portion connected to the fixed pipe portion and capable of rotating around the second axis. The rotating pipe portion is used to connect the second trunk pipe 345, and the fixed pipe portion is connected to the third trunk pipe 346 through the adapter. In this way, the combination of the rotary elbow joint and the adapter can connect the second trunk pipe 345 and the third trunk pipe 346 and allow the second trunk pipe 345 to rotate around the first axis relative to the first trunk pipe 344.

[0167] like Figures 6 to 8 As shown, preferably, the slide bar device 333 includes a slide bar 3331 and a first connecting end plate 3332, and one end of the slide bar 3331 is rotatably connected to the other end of the swing arm 331 through a second rotating shaft 335. One end of the first connecting end plate 3332 is fixedly connected to the bearing member 321, and the other end is fixedly connected to the other end of the slide bar 3331 to enhance the connection strength between the slide bar 3331 and the bearing member 321. The slide bar device 333 also includes a reinforcing plate fixedly arranged on the bearing member 321 and fixedly connected to the slide bar 3331.

[0168] Specifically, the slide bar device 333 is not just a bar, and in order to strengthen its strength, it is possible to consider adding a first connecting end plate 3332 at its end connection. A reinforcing plate can also be welded along the length direction of the slide bar 3331 to increase the strength.

[0169] like Figures 6 to 8 As shown, preferably, the slide bar device 333 includes a first slide bar 3333, a second slide bar 3334 and a second connecting end plate 3335, and one end of the first slide bar 3333 and the second slide bar 3334 passes through the slide seat 332 and is arranged on the bearing member 321. The second connecting end plate 3335 is rotatably connected to the other end of the swing arm 331 through a second rotating shaft 335, and the other ends of the first slide bar 3333 and the second slide bar 3334 are arranged on the second connecting end plate 3335.

[0170] Specifically, two through holes can be opened on the sliding seat 332, and the size of the through holes is suitable for the size of the first sliding rod 3333 and the second sliding rod 3334, so that the first sliding rod 3333 and the second sliding rod 3334 can pass through the two through holes and slide in the through holes. The second connecting end plate 3335 is rotatably connected to the swing arm 331 through the second rotating shaft 335, and the other ends of the first sliding rod 3333 and the second sliding rod 3334 are fixed to the second connecting end plate 3335, and the first sliding rod 3333 and the second sliding rod 3334 are arranged in parallel. In this way, the arrangement of the two sliding rods 3331 can swing as a whole and increase the strength.

[0171] like Figures 6 to 8 As shown, preferably, the angle between the center line of the swing arm 331 and the center line of the slide rod device 333 along the length direction at the initial position is in the range of 85° to 105°.

[0172] Specifically, the angle range of 85° to 105° enables the extracting device 32 to move approximately in a straight line when extracting the main paperboard from the main paperboard magazine 1 .

[0173] like Figures 6 to 8 As shown, preferably, the power mechanism 31 includes a motor, an engine, a swing cylinder or a component mainly composed of a cylinder, a rack and a gear and used to drive the swing arm 331 to rotate.

[0174] Specifically, the power mechanism 31 is mainly used to provide rotation for the swing arm 331 , and therefore, the power mechanism 31 has various forms.

[0175] The pick-and-place device 3 of the present application has a compact structure, small load inertia force, good rigidity of the mechanism, and is suitable for high-speed pick-and-place of materials. At the initial position of picking up materials, the angle between the center line of the swing arm 331 at the initial position and the center line of the slide rod device 333 along the length direction is 85° to 105°, and the main paperboard is taken out from the material bin along the perpendicular direction of the material bin picking plane with an approximately straight motion trajectory. Both the double slide rod and the reinforcing plate are conducive to strengthening the strength of the entire pick-and-place device 3 to prevent the slide rod from breaking during high-speed rotation. The swing arm 331 of the pick-and-place device 3 is connected to the extraction device 32 through the slide rod device 333, and the slide rod device 333 passes through the slide seat 332 and slides along the slide seat 332. In this connection mode, the swing arm 331 is far away from the extraction device 32, and its size is irrelevant to the size of the main paperboard. The rotation of the swing arm 331 will not cause excessive inertia force of the slide rod 3331, and will not damage the slide rod 3331. The combination of the slide bar 3331 and the slide seat 332 can continue to constrain the flipping range and angle of the load-bearing member 321, thereby ensuring that the load-bearing member 321 can grasp the material (such as cardboard or paper box), which can not only effectively reduce the output torque of the power mechanism 31, but also reduce the vibration, impact and wear generated by the pick-and-place device 3 during operation, thereby ensuring that the pick-and-place device 3 can better carry large-sized materials.

[0176] like Figures 10 to 12 As shown, preferably, the side paperboard bin 4 includes a side paperboard bin frame 41, a side paperboard side guard plate 42, a pressing plate device 43 and a paper support plate 44. The side paperboard bin frame 41 is arranged on the frame; the side paperboard side guard plate 42 is connected to the side paperboard bin frame 41 to protect the side of the side paperboard; the pressing plate device 43 is arranged on the side paperboard bin frame 41 to compact the top of the side paperboard; the paper support plate 44 is arranged at the bottom of the side paperboard side guard plate 42 to support the side paperboard.

[0177] Specifically, the side paperboard bin 4 is arranged on the upper side of the carton forming mother mold 7. The side paperboard is placed in the bin without conveying, so it is different from the main paperboard bin 1 in that it does not have a conveying and containing device 16. The side paperboard bin rack 41 is preferably two side panels in the present application. The side paperboard side guard plate 42 is an integral approximately rectangular plate, and its length and height are larger than the side paperboard to protect the side paperboard from sliding out at the side. The pressing plate device 43 presses the side paperboard by gravity. The size of the paper support plate 44 is larger than the side paperboard to be able to support the side paperboard.

[0178] like Figures 10 to 12 As shown, preferably, there are two side paperboard side guard plates 42, and the two side paperboard side guard plates 42 are both arranged on the side of the side paperboard material storage rack 41 away from the carton male mold 6.

[0179] Specifically, the side paperboards need to be glued to both sides of the main paperboard of the three-piece carton forming machine, so the side paperboard side guard plate 42 is optimally set to two.

[0180] like Figures 10 to 12 As shown, preferably, the side paperboard side guard plate 42 is an integral plate structure, and the width of the side paperboard side guard plate 42 is greater than the width of the side paperboard.

[0181] Specifically, the width of the side paperboard side guard plate 42 is greater than the width of the side paperboard, so that the side paperboard will not slide out of the side paperboard magazine 4 from the side.

[0182] like Figures 10 to 12 As shown, preferably, the pressing plate device 43 comprises: a pressing plate sliding rod 431, a pressing plate slider 432 and a pressing plate 433. The pressing plate sliding rod 431 is fixed to the side paperboard material storage rack 41 and is located in the middle of the two side paperboard side guard plates 42; the pressing plate slider 432 is slidably arranged on the pressing plate sliding rod 431; one end of the pressing plate 433 is arranged on the pressing plate slider 432 and moves along the pressing plate sliding rod 431 with the pressing plate slider 432, and the other end extends to the upper part of the side paperboard to press against the side paperboard under the action of gravity.

[0183] Specifically, a pressing plate sliding rod 431 is fixed on the side paperboard material storage rack 41 along the depth direction of the side paperboard material storage rack 4. In particular, the pressing plate sliding rod 431 is located in the middle of the side paperboard material storage rack 41. There are sliding tracks on both sides of the pressing plate sliding rod 431, and the pressing plate slider 432 is clamped into the sliding track, and there is no fixing device in the vertical direction, so the pressing plate slider 432 can move along the pressing plate sliding rod 431 under the action of gravity. Each time a side paperboard is taken out, the pressing plate slider 432 moves downward and presses the remaining side paperboards.

[0184] like Figures 10 to 12As shown, preferably, a long groove 421 is provided at the bottom of the side paperboard side guard plate 42, and the paper support plate 44 includes a support plate 441 and a baffle plate 442. The support plate 441 is fixed to the bottom of the side paperboard side guard plate 42, extends into the inner side of the side paperboard bin 4, and is used to support the side paperboard. The baffle plate 442 is slidably arranged at the bottom of the side paperboard side guard plate 42, and is used to stop the side paperboard from tilting forward and limit the falling position of the side paperboard.

[0185] Specifically, the support plate 441 can be welded or bolted to the bottom of the side paperboard side guard plate 42. The support plate 441 is preferably a long strip plate. The baffle plate 442 is preferably an L-shaped plate, and the end of its horizontal plate is clamped into the long strip groove 421 and can slide along the long strip groove 421. The length of the vertical plate is preferably greater than 10 thicknesses of the side paperboard, so as to save materials and well stop the side paperboard.

[0186] like Figures 10 to 12 As shown, preferably, the side paperboard material bin 4 further comprises: a side guard plate adjusting device, which connects the two side paperboard side guard plates 42 and is used to adjust the distance between the two side paperboard side guard plates 42 .

[0187] Specifically, the structure and function of the side guard plate adjusting device are similar to the guard plate adjusting device 14. By adjusting the distance between the two side paperboard side guard plates 42, side paperboards of different sizes can be placed.

[0188] like Figures 10 to 12 As shown, preferably, the two side paperboard side guard plates 42 are provided with a shaft sleeve on the side facing the side paperboard material storage rack 41, and the side paperboard material storage rack 41 is provided with a side paperboard through hole, and the side guard plate adjustment device includes a side guard plate forward and reverse screw rod and a side paperboard adjustment handle. The side guard plate forward and reverse screw rod is connected to the side paperboard material storage rack 41 through a bearing seat, and one end passes through the side paperboard through hole, and is inserted into the two shaft sleeves through a forward and reverse rotating T-shaped nut. The side paperboard adjustment handle is installed at one end of the side guard plate forward and reverse screw rod passing through the side paperboard through hole, and is used to rotate the side guard plate forward and reverse screw rod to drive the two side paperboard side guard plates 42 to move relative to or toward each other.

[0189] Specifically, the two side paperboard side guard plates 42 are moved relative to or toward each other by adjusting the side guard plate forward and reverse screw rods through the side paperboard adjustment handle in the same manner as described above.

[0190] The side paperboard bin 4 of the present application adopts a pressure plate device 43 to compact the side paperboard by gravity, which has a good compaction effect and saves energy. The pressure plate device 43 cooperates with the side paperboard side guard plate 42 and the paper support plate 44 to prevent the side paperboard from shifting. The side paperboard bin 4 also adopts a side guard plate adjustment device, which can adjust the two side paperboard side guard plates 42 relative to or towards each other by setting the side guard plate forward and reverse screw rods, the side paperboard adjustment handle and the forward and reverse rotation T-shaped nut to adapt to the side guard plates 12 of different specifications.

[0191] like Figure 10 to Figure 11 As shown, preferably, the carton male mold 6 comprises a male mold driving device 61 and a male mold module 62. The male mold driving device 61 is arranged on the frame; the male mold module 62 is installed on the male mold driving device 61 to reciprocate up and down under the drive of the male mold driving device 61.

[0192] Specifically, the structure of the carton male mold 6 is simple. It mainly includes two parts. The male mold driving device 61 is a power device that provides power for the up and down movement of the male mold module 62. The male mold module 62 is a rectangular parallelepiped frame structure with various specifications to adapt to boxes of different sizes. When the box type or size changes, the male mold module 62 needs to be replaced.

[0193] like Figure 10 to Figure 11 As shown, preferably, the male mold module 62 includes a male mold forming plate 621, two male mold guard plates 622 and a driving connection plate 623. The two male mold guard plates 622 are symmetrically arranged on both sides of the male mold forming plate 621 opposite to the paperboard bin 4. One end of the driving connection plate 623 is fixed to the male mold forming plate 621, and the other end is connected to the male mold driving device 61.

[0194] Specifically, the male mold module 62 is a component used for stamping. The size of the male mold forming plate 621 matches the box type to be formed. Two male mold guard plates 622 are vertically connected to the two sides of the male mold forming plate 621 to form a hollow rectangular parallelepiped structure with an upper opening. A driving connecting plate 623 is set in the middle of the male mold forming plate 621, and the male mold driving device 61 is connected to the driving connecting plate 623 to drive the entire male mold module 62 to move up and down.

[0195] The male mold module 62 structure of the present application can be quickly replaced when the carton forming female mold 7 forms cartons of different specifications.

[0196] like Figures 9 to 11 As shown, preferably, the three-piece carton forming machine also includes two side cardboard bending mechanisms 9, which are used to bend the side cardboards after the side cardboards taken out by the side cardboard picking and placing device 5 are pushed to the carton male mold 6.

[0197] Specifically, the two side paperboard bending mechanisms 9 are respectively located on both sides of the side paperboard picking and placing device 5. The side paperboard bending mechanisms 9 cooperate with the male mold guard plate 622 of the carton male mold 6 to complete the bending work of the side paperboards.

[0198] like Figures 9 to 11 As shown, preferably, the side paperboard bending mechanism 9 includes a side paperboard bending power device 91 and a side paperboard bending plate 92. The side paperboard bending power device 91 is installed on the frame; the side paperboard bending plate 92 is connected to the side paperboard bending power device 91, so as to move toward the male mold guard plate 622 under the drive of the side paperboard bending power device 91 to bend the side paperboard.

[0199] Specifically, the side paperboard bending power device 91 can be a cylinder or a linear motor. The side paperboard bending plate 92 is a vertical strip plate. When the side paperboard bending plates 92 of the two side paperboard bending mechanisms 9 move to the vicinity of the male mold guard plate 622, the distance between the two side paperboard bending plates 92 is slightly larger than the width of the male mold guard plate 622 so that the side paperboard can be bent along the fold for standby use.

[0200] The side paperboard bending mechanism 9 of the present application is mainly used to cooperate with the male mold module 62 to bend the side paperboard in advance to facilitate the subsequent carton forming female mold 7 to form the entire carton.

[0201] like Figures 13 to 21 As shown, preferably, the carton forming mother mold 7 comprises a base frame 71, a CD-direction sliding frame 72, a corner mold fixing member 73, and an adjusting device 74. The CD-direction sliding frame 72 is movably arranged on the base frame 71; the corner mold fixing member 73 is arranged on the CD-direction sliding frame 72 for installing forming mold parts; the adjusting device 74 is arranged on the base frame 71, connected to the CD-direction sliding frame 72, and used to adjust the position of the CD-direction sliding frame 72.

[0202] Specifically, the base frame 71 constitutes the bottom bracket of the carton forming mother mold 7 to support other parts of the carton forming mother mold 7. The main body of the base frame 71 is a frame structure composed of multiple rods and plates, and its shape can be a square frame or a rectangular frame, etc. Preferably, the base frame 71 is a square frame. The base frame 71 is used to support the carton forming mother mold 7, and can adjust the position of the carton forming mother mold 7. The main body of the CD-axis sliding frame 72 is a rectangular parallelepiped frame, and the CD-axis sliding frame 72 can move along the base frame 71. The corner mold fixing member 73 is used to install the forming mold, which is fixed to the CD-axis sliding frame 72 to move with it to adapt to different mold requirements. The adjusting device 74 can easily adjust the position of the CD-axis sliding frame 72 on the base frame 71, so that the adjustment of cartons of different sizes of the same box type and the adjustment of cartons of different types can be realized conveniently and quickly.

[0203] like Fig.13As shown, preferably, the base frame 71 includes a first CD guide rod 711, a second CD guide rod 712, a first MD guide rod 713, a second MD guide rod 714, four connection seats 715 and four adjustment units 716. The first CD guide rod 711 is parallel to the second CD guide rod 712, the first MD guide rod 713 is parallel to the second MD guide rod 714 and perpendicular to the first CD guide rod 711, each connection seat 715 includes a first connection seat through hole 7151 and a fixing portion 7153 perpendicular to the axis of the first through hole; each adjustment unit 716 is used to adjust the position of the base frame 71; wherein, both ends of the first CD guide rod 711 and the second CD guide rod 712 respectively pass through the first connection seat through holes 7151 of the two connection seats 715 and each end is connected to one connection seat 715 through one adjustment unit 716, and both ends of the first MD guide rod 713 and the second MD guide rod 714 are respectively connected to a fixing portion 7153 of a connection seat 715.

[0204] Specifically, the first CD guide rod 711, the second CD guide rod 712, the first MD guide rod 713 and the second MD guide rod 714 are all long rods, which are preferably cylindrical rods of the same size. The first CD guide rod 711 and the second CD guide rod 712 are perpendicular to the first MD guide rod 713 and the second MD guide rod 714 respectively. The first CD guide rod 711, the first MD guide rod 713, the second CD guide rod 712 and the second MD guide rod 714 are connected end to end to four connecting seats 715. In this way, the basic frame 71 forms a cubic frame structure. The connecting seat 715 is a plate-like structure. The front of the plate is wide and the side is narrow. A first connecting seat through hole 7151 is opened on the front of the plate and a fixing portion 7153 is fixed on the side. The adjustment units 716 are all mounted on the frame and can adjust the position of the basic frame 71 relative to other components.

[0205] like Fig.14 As shown, preferably, the CD sliding frame 72 includes two CD sliding frame end plates 721 and two CD sliding frame guide rods 722. Each CD sliding frame end plate 721 includes a CD guide sleeve 723; the two CD sliding frame guide rods 722 are respectively connected to the CD sliding frame end plates 721; wherein, the CD sliding frame 72 is respectively sleeved on the first CD guide rod 711 and the second CD guide rod 712 through the CD guide sleeves 723 at both ends, so as to be able to slide along the first CD guide rod 711 and the second CD guide rod 712.

[0206] Specifically, there may be two CD-direction sliding frame end plates 721 and their shapes may be plate-shaped, the overall shape of the CD-direction guide sleeve 723 may be prism-shaped, with a through hole in the middle, and the CD-direction guide sleeve 723 is fixedly connected to the CD-direction sliding frame end plates 721, and is sleeved on the first CD guide rod 711 and the second CD guide rod 712, so that the CD-direction sliding frame 72 can slide along the first CD guide rod 711 and the second CD guide rod 712. When the two CD-direction sliding frames 72 are sleeved on the first CD guide rod 711 and the second CD guide rod 712, since both can slide along the first CD guide rod 711 and the second CD guide rod 712, the relative distance between the two can be adjusted.

[0207] In addition, the CD slide frame guide rod 722 is in the shape of a long bar, and the number can be two. And the two CD slide frame guide rods 722 are connected in parallel to the CD slide frame end plate 721. In particular, the two CD slide frame guide rods 722 can be parallel to the first MD guide rod 713 and the second MD guide rod 714. Specifically, the CD slide frame guide rod 722 is fixedly connected to the CD slide frame end plate 721. This connection method is usually welding or bolt connection.

[0208] like Fig.14 As shown, preferably, the corner mold fixing member 73 includes a first side plate 731 and a second side plate 732. The first side plate 731 is provided with two corner mold through holes 7311, and the two CD-direction sliding frame guide rods 722 are respectively inserted into the two corner mold through holes 7311 through shaft sleeves. The second side plate 732 is vertically connected to the first side plate 731. There are two CD-direction sliding frames 72, and two corner mold fixing members 73 are symmetrically arranged on each CD-direction sliding frame 72, wherein the first side plates 731 of the two corner mold fixing members 73 on the same CD-direction sliding frame 72 are arranged opposite to each other, and the second side plates 732 of the two adjacent corner mold fixing members 73 on different CD-direction sliding frames 72 are arranged opposite to each other.

[0209] Specifically, the first side plate 731 and the second side plate 732 of the corner mold fixing member 73 are vertically connected together. The first side plates 731 of the two corner mold fixing members 73 of the same CD-direction sliding frame 72 are arranged opposite to each other. The second side plates 732 of the two corner mold fixing members 73 on the same side of different CD-direction sliding frames 72 are arranged opposite to each other. The corner mold fixing member 73 is designed to have two plates arranged vertically, so that the installation position of the mold installed thereon can be easily adjusted, and the molding of various box types can be realized.

[0210] like Figures 13 to 21As shown, preferably, a second connection seat through hole 7152 is provided on one of the connection seats 715 on the side of the second CD guide rod 712, and the CD sliding frame end plate 721 also includes a connection lug portion 7211, each of which is provided with a lug hole 72111, and the connection lug portion 7211 is located on the CD guide sleeve 723 side of the CD sliding frame end plate 721. The adjustment device 74 includes: a CD direction reversing mechanism 741, and the CD direction reversing mechanism 741 includes a first CD direction forward and reverse screw rod 7411, a second CD direction forward and reverse screw rod 7412, a CD direction transmission device 7413 and a CD direction adjustment handle 7414. The first CD direction forward and reverse screw rod 7411 is connected to the connection seats 715 on both sides of the first CD guide rod 711 through a bearing seat and is inserted into the two lug holes 72111 on the same side through forward and reverse rotation T-shaped nuts. The second CD-direction forward and reverse screw rod 7412 is connected to the connection seat 715 on both sides of the second CD guide rod 712 through the bearing seat, one end of which passes through the second connection seat through hole 7152, and is inserted into the two lug holes 72111 on the other side through the forward and reverse rotation T-shaped nut. The CD-direction transmission device 7413 is transmission-connected with the first CD-direction forward and reverse screw rod 7411 and the second CD-direction forward and reverse screw rod 7412, so that the first CD-direction forward and reverse screw rod 7411 and the second CD-direction forward and reverse screw rod 7412 rotate synchronously. The CD-direction adjustment handle 7414 is installed on one end of the second CD-direction forward and reverse screw rod 7412 that passes through the connection seat 715, and is used to adjust the two CD-direction sliding frames 72 along the direction of the first CD guide rod 711.

[0211] Specifically, the CD direction reversing mechanism 741 is used to adjust the relative position of the two CD direction sliding frames 72 along the direction of the second CD guide rod 712. The first CD direction forward and reverse screw rod 7411 is parallel to the second CD direction forward and reverse screw rod 7412, and both are perpendicular to the length direction of the CD direction sliding frame 72. A CD direction transmission device 7413 is connected between the first CD direction forward and reverse screw rod 7411 and the second CD direction forward and reverse screw rod 7412 to achieve synchronous rotation of the two. The CD direction transmission device 7413 can be a mechanism such as a synchronous belt, a sprocket, etc. that can make the two move synchronously. Preferably, it is a synchronous belt. The first CD direction forward and reverse screw rod 7411 and the second CD direction forward and reverse screw rod 7412 are connected at the connecting seat 715 through a bearing, and are connected to the CD direction sliding frame 72 through a forward and reverse rotating T-shaped nut, so that the first CD direction forward and reverse screw rod 7411 and the second CD direction forward and reverse screw rod 7412 can rotate relative to the connecting seat 715, and drive the two CD direction sliding frames 72 to move relative to or toward each other. This adjustment method can ensure that the carton male mold 6 is always located at the center of the molding space of the carton molding female mold 7.

[0212] In a preferred embodiment, when the relative positions of the two CD-direction sliding frames 72 along the direction of the second CD-direction guide rod 712 need to be adjusted, the CD-direction adjustment handle 7414 rotates to drive the second CD-direction forward and reverse screw rod 7412 to rotate. Since the first CD-direction forward and reverse screw rod 7411 and the second CD-direction forward and reverse screw rod 7412 are connected through the CD-direction transmission device 7413 to be able to rotate synchronously, the first CD-direction forward and reverse screw rod 7411 is also driven to rotate synchronously. The first CD-direction forward and reverse screw rod 7411 and the second CD-direction forward and reverse screw rod 7412 adjust the relative positions of the two CD-direction sliding frames 72 along the direction of the second CD-direction guide rod 712 by rotating the T-nut forward and reversely.

[0213] like Figures 13 to 21 As shown, preferably, a forward and reverse screw rod through hole 7312 is provided between the two corner mold through holes 7311 on the first side plate 731, and the adjustment device 74 further includes: an MD direction reversing mechanism 742, the MD direction reversing mechanism 742 includes a sliding shaft 7421, two sliding rack forward and reverse screw rods 7422, two pairs of first bevel gears 7423 and second bevel gears 7424, and an MD direction adjustment handle 7425. One end of the sliding shaft 7421 passes through and is rotatably connected to a connecting seat 715 on one side of the first CD guide rod 711, and the sliding shaft 7421 is parallel to the first CD guide rod 711. Each of the forward and reverse screw rods 7422 of the sliding frame is inserted into the two forward and reverse screw rod through holes 7312 on the same CD sliding frame 72 through a pair of forward and reverse rotating T-shaped nuts. Both ends of each CD sliding frame 72 can be rotatably connected to the two CD sliding frame end plates 721 on the same CD sliding frame 72, and the side close to the sliding shaft 7421 passes through the CD sliding frame end plate 721. Each first bevel gear 7423 is arranged on the sliding frame forward and reverse screw rod 7422 passing through the CD sliding frame end plate 721, and each second bevel gear 7424 is correspondingly arranged on the CD sliding frame end plate 721 where the first bevel gear 7423 is located to mesh with the first bevel gear 7423, wherein each second bevel gear 7424 is provided with a bevel gear hole 74241. The MD direction adjustment handle 7425 is installed on the sliding shaft 7421 on the connecting seat 715 passing through one side of the first CD guide rod 711. The sliding shaft 7421 is sequentially inserted into the two bevel gear holes 74241 on the same side so as to drive the two forward and reverse screw rods 7422 of the two sliding frames to rotate synchronously when the sliding shaft 7421 rotates.

[0214] Specifically, the MD direction reversing mechanism 742 is used to adjust the relative position of the two CD direction sliding frames 72 along the first MD guide rod 713. The sliding shaft 7421 is perpendicular to the two sliding frame forward and reverse screw rods 7422. The first bevel gear 7423 and the second bevel gear 7424 appear in pairs, with a total of two pairs. The MD direction adjustment handle 7425 is a manual rotation handle. The second bevel gear 7424 has a bevel gear hole 74241 along the axial direction.

[0215] In a preferred embodiment, when it is necessary to adjust the relative position of the two CD-direction sliding frames 72 along the first MD guide rod 713, the MD-direction adjustment handle 7425 is first rotated, wherein the forward and reverse rotations can realize the approach and separation of the two CD-direction sliding frames 72. The MD-direction adjustment handle 7425 drives the sliding shaft 7421 to rotate. The second bevel gear 7424 rotates together with the sliding shaft 7421, and the second bevel gear 7424 meshes with the first bevel gear 7423 and drives the first bevel gear 7423 to rotate. The first bevel gear 7423 is set on the forward and reverse screw rod 7422 of the sliding frame, thereby driving the forward and reverse screw rod 7422 of the sliding frame to rotate, and the relative position of the two CD-direction sliding frames 72 along the first MD guide rod 713 is adjusted by forward and reverse rotation of the T-nut.

[0216] like Figures 13 to 21 As shown, preferably, the carton forming mother mold 7 also includes an MD-direction sliding frame 75, and the MD-direction sliding frame 75 includes two MD-direction sliding frame end plates 751 and two MD-direction sliding frame guide rods 752, and each MD-direction sliding frame end plate 751 includes an MD-direction guide sleeve 7511; the two MD-direction sliding frame guide rods 752 are respectively connected to the two MD-direction sliding frame end plates 751; wherein, the MD-direction sliding frame 75 is respectively connected to the first MD guide rod 713 and the second MD guide rod 714 through the MD-direction guide sleeves 7511 at both ends, so as to be able to slide along the first MD guide rod 713 and the second MD guide rod 714.

[0217] Specifically, the two MD slide frame guide rods 752 are parallel to each other and parallel to the first CD guide rod 711. The two MD slide frame guide rods 752 are also long cylindrical rods. Various mold forming fixtures can be set on the MD slide frame 75 to provide a basic structure for forming.

[0218] like Figures 13 to 21 As shown, preferably, a long hole 7321 is opened on the second side plate 732 of the corner mold fixing part 73, and there are two MD-direction sliding frames 75. The two MD-direction sliding frame guide rods 752 of each MD-direction sliding frame 75 pass through the long holes 7321 of two symmetrical second side plates 732 to move synchronously with the corner mold fixing part 73.

[0219] Specifically, the corner mold fixing part 73 and the MD sliding frame 75 have the same function. The two cooperate to set the mold forming fixing parts in all directions, and the mold forming fixing parts can be set on the mold forming fixing parts to form various types of cartons. There is a small gap between the MD sliding frame guide rod 752 and the long strip hole 7321.

[0220] like Figures 13 to 21As shown, preferably, each of the corner mold fixing members 73 further includes: a third side plate 733, which is parallel to the first side plate 731 and is sleeved on the two CD-direction sliding frame guide rods 722 on the same side.

[0221] Specifically, adapted to the carton forming mother mold 7 structure of the three-piece carton forming machine, the corner mold fixing member 73 needs to be provided with a third side plate 733 parallel to the first side plate 731 to adapt to the setting of the three-piece forming mold.

[0222] like Figures 13 to 21 As shown, preferably, the carton forming mother mold 7 further includes four first glue pressing mechanisms 76 and four second glue pressing mechanisms 77. The four first glue pressing mechanisms 76 are symmetrically arranged on the third side plate 733, respectively, and are used to press the glue spots between the side paperboard and the main paperboard along the direction of the first CD guide rod 711. The four second glue pressing mechanisms 77 are symmetrically arranged on the second side plate 732, respectively, and are used to press the glue spots between the side paperboard and the main paperboard along the direction of the first MD guide rod 713.

[0223] Specifically, before gluing, the glue dispensing system is used to dispense glue to the corresponding positions of the main paperboard. The glue dispensing system is an existing device in this field and will not be discussed in detail here. The combination of the four first glue pressing mechanisms 76 and the four second glue pressing mechanisms 77 can realize the compaction of the four surfaces and eight ends between the main paperboard and the side paperboard. As a result, there will be no deviation during the compaction process. Since hot melt glue is used for dispensing glue but the molding process is very short, the main paperboard and the side paperboard cannot be glued tightly without using the first glue pressing mechanism 76 and the second glue pressing mechanism 77 to compact the side paperboard and the main paperboard. During the compaction process, the four first glue pressing mechanisms 76 and the four second glue pressing mechanisms 77 are located on the outside of the paperboard, and the carton male mold 6 is located on the inside of the paperboard, so that the compaction can be completed by cooperation.

[0224] like Figures 13 to 21 As shown, preferably, the first glue pressing mechanism 76 includes a first glue pressing plate 761 and a first glue pressing cylinder 762. The first glue pressing plate 761 is perpendicular to the third side plate 733 and faces the molding area of ​​the carton molding mother mold 7; the first glue pressing cylinder 762 is arranged on the third side plate 733 and is connected to the first glue pressing plate 761 through a piston to drive the first glue pressing plate 761 to reciprocate toward the molding area of ​​the carton molding mother mold 7. The second glue pressing mechanism 77 includes a second glue pressing plate 771 and a second glue pressing cylinder 772. The second glue pressing plate 771 is perpendicular to the second side plate 732 and faces the molding area of ​​the carton molding mother mold 7; the second glue pressing cylinder 772 is arranged on the second side plate 732 and is connected to the second glue pressing plate 771 through a piston to drive the second glue pressing plate 771 to reciprocate toward the molding area of ​​the carton molding mother mold 7 along the moving direction perpendicular to the first glue pressing plate 761.

[0225] Specifically, the movement direction of the first glue pressing plate 761 is perpendicular to the third side plate 733. The movement direction of the second glue pressing plate 771 is perpendicular to the second side plate 732. As described above, the third side plate 733 and the second side plate 732 are perpendicular to each other, so the movement directions of the first glue pressing plate 761 and the second glue pressing plate 771 must also be perpendicular to each other. It just fits the corner position after the main paperboard and the side paperboard are bent.

[0226] like Figures 13 to 21 As shown, preferably, the carton forming mother mold 7 also includes a one-way mechanism 78, which includes a blocking portion 781 and a one-way rotating portion 782, the blocking portion 781 is arranged on the third side plate 733 on the upper side of the first glue pressing plate 761; the one-way rotating portion 782 can be rotatably arranged on the third side plate 733; wherein, when the carton male mold 6 punches the cardboard, the one-way rotating portion 782 can rotate toward the molding area of ​​the carton forming mother mold 7, and when the carton male mold 6 withdraws, the one-way rotating portion 782 stops at the blocking portion 781 to prevent the cardboard from being brought out of the carton forming mother mold 7.

[0227] Specifically, the one-way mechanism 78 is mainly used to block the carton from moving when the carton male mold 6 withdraws. The shape of the one-way rotating part 782 is similar to a hook. And the part of the one-way rotating part 782 facing the molding area of ​​the carton forming female mold 7 is lighter than the part away from the molding area of ​​the carton forming female mold 7, so that in the normal state, the one-way rotating part 782 is tilted backward and stops at the blocking part 781. Thereby, the front part of the entire one-way rotating part 782 is located in the molding area of ​​the carton forming female mold 7. And the front part of the one-way rotating part 782 is arc-shaped, and when the carton male mold 6 punches the cardboard, it can move toward the molding area of ​​the carton forming female mold 7 under the action of the impact force, without affecting the punching work. But when the carton male mold 6 withdraws, it returns to its original state to block the upward movement of the cardboard and falls back into the molding area of ​​the carton forming female mold 7.

[0228] like Figures 13 to 21 As shown, preferably, the carton forming mother mold 7 also includes: folding and pressing modules 79, which are 4 in number, and the 4 folding and pressing modules 79 are respectively arranged on one of the corner mold fixing parts 73, for stamping and forming the three-piece carton. Among them, the folding and pressing modules 79 include a first forming plate 791, a second forming plate 792 and a third forming plate 793. The first forming plate 791 is connected to the second side plate 732; the second forming plate 792 is connected to the first side plate 731; the third forming plate 793 is connected to the third side plate 733; wherein, the third forming plates 793 of two adjacent folding and pressing modules 79 are plugged together.

[0229] Specifically, the folding and pressing module 79 can be a bending plate structure with an L-shaped corner. It consists of three parts, guiding the main paperboard and the side paperboard to be formed to be bent into the designed shape. The third forming plates 793 are plugged together along the direction of the first MD guide rod 713, which saves space and can protect the side parts when adjusting the relative distance of the corner mold fixing part 73. When the carton to be formed changes from the minimum size to the maximum size, the third forming plate 793 does not need to be replaced, so that it can adapt to cartons of different sizes and models.

[0230] In the present application, in the process of driving the cardboard into the carton forming female mold 7, the folding and bonding of the cardboard folding pages are realized, and the glue is compacted to achieve the bonding of the carton. The carton forming female mold 7 has different sizes and different types of production needs. The carton forming female mold 7 of the present application has a simple structure, good compatibility, and convenient changeover. It can be compatible with cartons of different sizes of the same box type, and it is also preferably compatible with different types of cartons. The basic frame 71 can connect the first CD guide rod 711 and the second CD guide rod 712 to four connecting seats 715 through the first MD guide rod 713 and the second MD guide rod 714, thereby forming a cube-shaped frame, which is different from the situation of only two CD guide rods in the prior art. It is convenient to adjust the basic frame 71 as a whole. The adjustment device 74 includes a CD-direction reversing mechanism 741 and an MD-direction reversing mechanism 742, which can easily realize the adjustment of the CD-direction sliding frame 72 along two vertical directions, and it is convenient to adjust the molding space in the carton forming female mold 7 to adapt to the molding of cartons of different sizes and different types.

[0231] like Fig. 22 As shown, preferably, the out-box device 8 includes an out-box conveying device 81, an out-box grabbing device 82 and an out-box conveying device 83. The out-box grabbing device 82 can be slidably arranged on the out-box conveying device 81, and is used to grab the carton formed on the carton forming mother mold 7; the out-box conveying device 83 is located at the lower side of the out-box conveying device 81, and is used to convey the carton placed by the out-box grabbing device 82.

[0232] Specifically, the unpacking device 8 as a whole gradually extends outward from the lower part of the carton forming mother mold 7 to facilitate taking away the formed carton. After the carton forming mother mold 7 completes the carton forming, the unpacking grabbing device 82 of the unpacking device 8 grabs it under the action of the unpacking conveying device 81 and places it on the unpacking conveying device 83 for outward transportation.

[0233] like Fig. 22As shown, preferably, the unpacking conveying device 81 includes an unpacking base plate 811, an unpacking synchronous conveyor belt 812 and an unpacking power device 813. The unpacking base plate 811 extends from the carton forming mother mold 7 to the unpacking conveying device 83. The unpacking synchronous conveyor belt 812 is arranged on the unpacking base plate 811 along the length direction of the unpacking base plate 811. The unpacking power device 813 is connected to the unpacking synchronous conveyor belt 812 to drive the unpacking synchronous conveyor belt 812 to rotate. The unpacking grabbing device 82 includes an unpacking sliding portion 821, an unpacking support portion 822 and an unpacking suction cup 823. The unpacking sliding portion 821 can be slidably arranged on the unpacking synchronous conveyor belt 812. The unpacking support portion 822 is connected to the unpacking sliding portion 821. The unpacking suction cup 823 is arranged at one end of the unpacking support portion 822 away from the unpacking sliding portion 821, and is used to grab a carton from the carton forming mother mold 7.

[0234] Specifically, the unpacking base plate 811 can be a long strip in the vertical direction, which is used to place the entire unpacking synchronous conveyor belt 812. Pulleys are arranged on the upper and lower parts of the unpacking base plate 811, and the unpacking synchronous conveyor belt 812 is arranged on the pulleys. The upper pulley is connected to the motor so as to rotate under the drive of the motor, thereby driving the unpacking synchronous conveyor belt 812 to rotate. The unpacking sliding portion 821 of the unpacking grabbing device 82 is fixedly connected to the unpacking synchronous conveyor belt 812 and moves with the unpacking synchronous conveyor belt 812. When the unpacking suction cup 823 reaches the lower side of the carton molding mother mold 7, it sucks the formed carton and moves downward with the unpacking synchronous conveyor belt 812, and places the carton on the unpacking conveying device 83. In this way, the formed carton will not fall onto the unpacking conveying device 83 to prevent unnecessary damage.

[0235] The three-piece carton forming machine of the present application uses a pick-and-place device 3 to suck the main carton from the main carton material bin 1 and place it on the conveying device 2. The conveying device 2 conveys the main carton to the carton forming female mold 7, and then the side carton picking and placing device 5 sucks the side carton from the side carton material bin 4 and cooperates with the side carton bending mechanism 9 to bend it at the carton male mold 6 and enter the carton forming female mold 7. Under the joint action of the carton male mold 6 and the carton forming female mold 7, the corresponding carton is formed and then output through the carton discharging device 8, and the whole process is fully automated.

[0236] The guard plate adjustment device 14 of the main paperboard bin 1 adjusts the first side guard plate 121 and the second side guard plate 122 by means of positive and negative screw rods and T-shaped nuts, so that the distance between the first side guard plate 121 and the second side guard plate 122 can be manually changed to adapt to main paperboards of different sizes. The conveying adjustment device 15 also adjusts the conveying holding device 16 by means of positive and negative screw rods and T-shaped nuts, so that the distance between the first conveying holding device 161 and the second conveying holding device 162 can be manually changed to adapt to the conveying of main paperboards of different sizes.

[0237] The conveying device 2 can increase the stroke of the pusher 23 by adding an extension rod 24 at the end of the conveying rod 2211, so as to adapt to materials of different sizes, such as main paperboard, to be pushed to the appropriate position for stamping without adjusting the position of the conveying device 2 as a whole.

[0238] The pick-and-place device 3 has a compact structure, a small load inertia force, and good mechanism rigidity, and is suitable for high-speed pick-and-place of materials.

[0239] The side paperboard bin 4 uses a pressing plate device 43 to compact the side paperboards by gravity, which has a good compaction effect and saves energy.

[0240] The side paperboard bending mechanism 9 cooperates with the side paperboard taking and placing device 5 to bend the side paperboard at the male mold module 62. The whole process is controlled, thereby increasing the yield rate of the produced cartons.

[0241] The corner mold fixing member 73 of the carton forming mother mold 7 can adapt to the molding of cartons of different sizes, and is easy to replace and has good compatibility. The carton forming mother mold 7 can easily adjust the CD sliding frame 72 along two vertical directions through the CD direction reversing mechanism 741 and the MD direction reversing mechanism 742, so as to facilitate the adjustment of the molding space in the carton forming mother mold 7 to adapt to the molding of cartons of different sizes and types.

[0242] like Figure 24 to Figure 25As shown, the three-piece carton forming machine is mainly used for forming three-piece carton. The carton is formed by folding, overlapping and gluing the main body cardboard 100, the first side cardboard 200 and the second side cardboard 300. The main body cardboard 100, the first side cardboard 200 and the second side cardboard 300 are all pre-formed with indentation lines. The main body cardboard 100 is folded along the indentation lines to form the carton bottom 1001, the carton front facade 1002, the carton rear facade 1003, the top small flap 1004 and the top large flap 1005. The top small flap 1004 and the top large flap 1005 overlap and overlap when sealing the carton. The top small flap 1004 is used for internal support and overlapping the top large flap 1005. The top large flap 1005 is on the outermost side to form a complete top cover of the carton. The second side paperboard 300 is vertically placed on both sides of the main body paperboard 100 and overlapped and bonded with the main body paperboard 100 to form the first side facade 2001 and the second side facade 3001 of the carton; the two sides of the carton bottom 1001 are folded along the indentation line to form the first bottom lap piece 10011 and the second bottom lap piece 10012; the two sides of the carton front facade 1002 are folded along the indentation line to form the first carton front facade lap piece 10021 and the second carton front facade lap piece 10022; the two sides of the carton rear facade 1003 are folded along the indentation line to form the first carton rear facade lap piece 10031 and the second carton rear facade lap piece 10032; the two sides of the top large flap 1005 are folded along the indentation line to form The first top cover overlap piece 10051 and the second top cover overlap piece 10052, the first bottom overlap piece 10011 are bonded to the outer lower part of the first side cardboard 200, the first carton front facade overlap piece 10021 is bonded to one end of the outer side of the first side cardboard 200, the first carton rear facade overlap piece 10031 is bonded to the other end of the outer side of the first side cardboard 200, the first top cover overlap piece 10051 is bonded to the outer upper part of the first side cardboard 200, the second bottom overlap piece 10012 is bonded to the outer lower part of the second side cardboard 300, the second carton front facade overlap piece 10022 is bonded to one end of the outer side of the second side cardboard 300, the second carton rear facade overlap piece 10032 is bonded to the second side cardboard The second top cover lap piece 10052 is bonded to the outer side of the second side paperboard 300, the two sides of the first side paperboard 200 are folded along the indentation line to form the first front inner upright board 2001 and the first rear inner upright board 2002, the two sides of the second side paperboard 300 are folded along the indentation line to form the second front inner upright board 30011 and the second rear inner upright board 30012, the first front inner upright board 2001 is bonded to the inner side of the front vertical surface 1002 of the carton, the second front inner upright board 30011 is bonded to the inner side of the front vertical surface 1002 of the carton; the first rear inner upright board 2002 is bonded to the inner side of the rear vertical surface 1003 of the carton, and the second rear inner upright board 30012 is bonded to the inner side of the rear vertical surface 1003 of the carton. A hand tear hole 10053 is provided in the middle of the top large swing cover 1005.A handle hole 30013 is provided in the middle of the first side paperboard 200 and the second side paperboard 300 to facilitate consumers to carry the carton. At the same time, it can be used for ventilation when fresh items are contained.

[0243] Although multiple embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A three-piece carton forming machine, characterized in that: include: frame; A main paperboard bin, which is arranged on the frame and is used to place the main paperboard to be processed; A conveying device, which is arranged at the lower side of the discharge portion of the main paperboard bin and is used to convey the main paperboard taken out from the main paperboard bin; A pick-up and place device, which is arranged on the upper side of the conveying device and is used to take out the main paperboard from the main paperboard bin and place it on the conveying device; A glue dispensing system, wherein the glue dispensing system is arranged on the frame; Two side paperboard bins, the two side paperboard bins are used to place the side paperboards to be processed; A side paperboard taking and placing device, which is arranged at the lower side of the side paperboard bin and is used to take out the side paperboard from the side paperboard bin; A carton male mold, the carton male mold is arranged between the two side paperboard bins; A carton forming female mold, which is arranged at the lower side of the carton male mold and is used to form the main paperboard and the side paperboard into a carton; A control system, wherein the control system is connected to the main paperboard bin, the conveying device, the pick-and-place device, the glue dispensing system, the side paperboard bin, the side paperboard pick-and-place device, the carton male mold, and the carton forming female mold; Wherein, the glue dispensing system dispenses glue on the main paperboard before the main paperboard is transferred to the carton forming mother mold, so as to complete the pressing of the main paperboard and the side paperboard in the carton forming mother mold; The carton forming master mold comprises: Basic framework; A CD sliding frame, wherein the CD sliding frame is movably arranged on the base frame; A corner mold fixing part, which is arranged on the CD sliding frame and is used for installing molding mold parts; An adjusting device is arranged on the basic frame, connected to the CD sliding frame, and used for adjusting the position of the CD sliding frame.

2. The three-piece carton forming machine according to claim 1, characterized in that: The main paperboard silo comprises: A silo rack, the silo rack being mounted on the frame; Side guard plates, which are installed on both sides of the silo frame and are used to protect the sides of the main paperboard; A guide device, which is arranged on the silo frame and is used to support the main paperboard and guide the side guard plates to move to both sides; A guard plate adjusting device, the guard plate adjusting device is arranged on the silo frame and is used to adjust the distance between the side guard plates; A conveying and regulating device, wherein the conveying and regulating device is arranged on the silo frame; A conveying and containing device, the conveying and containing device is installed on the conveying adjustment device and the guiding device, and is used for conveying the main paperboard; Wherein, the conveying adjustment device can adjust the conveying holding device to move along the guiding device.

3. The three-piece carton forming machine according to claim 2, characterized in that: The silo frame comprises: a first supporting profile and a second supporting profile, wherein the first supporting profile is parallel to the second supporting profile; A first upper connecting plate and a second upper connecting plate, wherein one end of the first upper connecting plate is connected to the first supporting profile and the other end is provided with a first through hole, and one end of the second upper connecting plate is connected to the second supporting profile and the other end is provided with a second through hole; A first lower connecting plate and a second lower connecting plate, wherein one end of the first lower connecting plate is connected to the first supporting profile, and the other end is provided with a third through hole and a fourth through hole, and one end of the second lower connecting plate is connected to the second supporting profile, and the other end is provided with a fifth through hole and a sixth through hole.

4. The three-piece carton forming machine according to claim 3, characterized in that: The guiding device comprises: A first guide shaft, wherein the first guide shaft is inserted into the third through hole and the fifth through hole through a circular sleeve; a second guide shaft, the second guide shaft being inserted into the fourth through hole and the sixth through hole through a circular sleeve; a third guide shaft, the third guide shaft being inserted into the first through hole and the second through hole through a circular sleeve; Wherein, the first guide axis is parallel to the second guide axis and the third guide axis.

5. The three-piece carton forming machine according to claim 4, characterized in that: A seventh through hole is provided between the third through hole and the fourth through hole of the first lower connecting plate, an eighth through hole is provided between the fifth through hole and the sixth through hole of the second lower connecting plate, a ninth through hole is provided on the first upper connecting plate, and a tenth through hole is provided on the second upper connecting plate. The guard plate adjusting device comprises: A first forward and reverse screw rod, wherein the first forward and reverse screw rod is inserted into the seventh through hole and the eighth through hole through two forward and reverse rotation T-shaped nuts; A second forward and reverse screw rod is inserted into the ninth through hole and the tenth through hole through two forward and reverse rotating T-shaped nuts, and the second forward and reverse screw rod is parallel to the first forward and reverse screw rod.

6. The three-piece carton forming machine according to claim 5, characterized in that: The guard plate adjustment device also includes: a transmission device, which is installed at the end of the first forward and reverse screw rod and the second forward and reverse screw rod on the same side, so that the first forward and reverse screw rod and the second forward and reverse screw rod rotate synchronously.

7. The three-piece carton forming machine according to claim 6, characterized in that: The guard plate adjustment device also includes: a guard plate rotating handle, which is arranged at the end of the first forward and reverse screw rod away from the transmission device and is used to manually adjust the distance between the first supporting profile and the second supporting profile.

8. The three-piece carton forming machine according to claim 7, characterized in that: The side guard plate comprises: a first side guard plate connected to the first supporting profile and the first lower connecting plate; A second side guard plate is connected to the second supporting profile and the second lower connecting plate.

9. The three-piece carton forming machine according to claim 8, characterized in that: An eleventh through hole is further provided between the fourth through hole and the seventh through hole of the first lower connecting plate, and a twelfth through hole is further provided between the sixth through hole and the eighth through hole of the second lower connecting plate; The conveying adjustment device comprises: a conveying adjustment forward and reverse screw rod, and the conveying adjustment forward and reverse screw rod is inserted into the eleventh through hole and the twelfth through hole through two forward and reverse rotating T-shaped nuts.

10. The three-piece carton forming machine according to claim 9, characterized in that: The delivery adjustment device also includes: A conveying rotating handle is arranged at one end of the conveying adjusting forward and reverse screw rod and is used for manually adjusting the conveying containing device.

11. The three-piece carton forming machine according to claim 10, characterized in that: The conveying and containing device comprises: A first conveying and containing device, wherein the first conveying and containing device is respectively sleeved on the first guide shaft and the second guide shaft through two circular sleeves, and is sleeved on the conveying and adjusting forward and reverse screw rods through forward and reverse rotating T-shaped nuts; A second conveying and containing device, wherein the second conveying and containing device is respectively sleeved on the first guide shaft and the second guide shaft through two circular sleeves, and is sleeved on the conveying and adjusting forward and reverse screw rod through a forward and reverse rotating T-shaped nut; Wherein, the first conveying and containing device is parallel to the second conveying and containing device.

12. The three-piece carton forming machine according to claim 1, characterized in that: The transmission device comprises: A conveyor frame, the conveyor frame comprising a molding station and a conveying station for conveying materials to the molding station; A linear drive mechanism, wherein the linear drive mechanism is arranged on the conveying device frame; A pushing member, wherein the initial position of the pushing member is located on the conveying station of the conveying device frame; An extension rod, one end of which is connected to the pushing member, and the other end of which is connected to the linear drive mechanism, for extending the pushing stroke of the pushing member; The linear drive mechanism drives the extension rod and the pusher to move linearly back and forth in the conveyor frame to push materials of different sizes into the molding station.

13. The three-piece carton forming machine according to claim 12, characterized in that: The linear drive mechanism comprises: A conveying mechanism, the conveying mechanism comprising a conveying rod connected to the conveying device frame, a driving wheel installed on one side of the conveying rod, a driven wheel installed on the other side of the conveying rod, and a belt sleeved between the driving wheel and the driven wheel and connected to the extension rod; A servo motor is installed on the transmission rod, and an output shaft of the servo motor is connected to the driving wheel.

14. The three-piece carton forming machine according to claim 13, characterized in that: The belt is a synchronous belt, and the linear drive mechanism further includes: a conversion member, the conversion member includes a belt connection portion and an extension rod connection portion connected to the belt connection portion; Wherein, the extension rod is connected to the extension rod connecting part, a limiting groove is provided in the belt connecting part, a groove wall of the limiting groove is embedded with limiting teeth, and the limiting teeth are engaged with the belt.

15. The three-piece carton forming machine according to claim 14, characterized in that: The conveying device further comprises: a sliding mechanism, which comprises a slide rail and a slider slidably connected to the slide rail, wherein the slider is connected to the adapter, and the slide rail is connected to the conveying rod and is parallel to the belt.

16. The three-piece carton forming machine according to claim 12, characterized in that: The pusher comprises: A push plate connected to an end of the extension rod away from the linear drive mechanism; A supporting plate connected to the bottom of the push plate; An avoidance baffle, the avoidance baffle is connected to the top of the push plate; Wherein, an obtuse angle is formed between the avoidance baffle and the push plate.

17. The three-piece carton forming machine according to claim 12, characterized in that: The conveying device frame includes a first conveying guide rail and a second conveying guide rail parallel to each other, and the conveying device also includes: two supporting assemblies, each of which is respectively connected to the first conveying guide rail and the second conveying guide rail for supporting materials.

18. The three-piece carton forming machine according to claim 17, characterized in that: The conveying device further comprises: a bearing assembly, wherein the bearing assembly comprises: Four connecting plates, every two of which are spaced apart and symmetrically arranged on the first conveying guide rail and the second conveying guide rail, and each of the connecting plates is provided with a bearing rod through hole; Two bearing rods, each of which passes through a corresponding bearing rod through hole and is plugged onto the first conveying guide rail and the second conveying guide rail to support the two supporting assemblies and the linear drive mechanism.

19. The three-piece carton forming machine according to claim 18, characterized in that: Each of the connecting plates is also provided with a through hole for the positive and negative screw rods of the frame, and the conveying device further comprises: a frame adjustment device, and the frame adjustment device comprises: Two rack forward and reverse screw rods, each of which is inserted into two corresponding rack forward and reverse screw rod through holes on the connecting plate through two forward and reverse rotating T-shaped nuts; A frame transmission device, the frame transmission device is connected to the same side end of the two frame forward and reverse screw rods, and is used to drive the two frame forward and reverse screw rods to move synchronously; A rack adjustment handle is arranged at one end of one of the rack forward and reverse screw rods, and is used to manually adjust the distance between the first conveying guide rail and the second conveying guide rail.

20. The three-piece carton forming machine according to claim 19, characterized in that: The conveying device further comprises: two positioning blocks, which are symmetrically arranged on the first conveying guide rail and the second conveying guide rail on both sides of the molding station to slide along the first conveying guide rail and the second conveying guide rail and be locked and fixed after sliding into place.

21. The three-piece carton forming machine according to claim 1, characterized in that: The pick-and-place device comprises: A power mechanism, wherein the power mechanism is arranged on the frame; An extraction device, the extraction device is used to extract and release the material; A connecting rod mechanism, the connecting rod mechanism comprising: a swing arm, one end of which is rotatably connected to the frame and connected to the power mechanism through a first rotating shaft; a slide seat, the slide seat is rotatably connected to the frame; a slide rod device, one end of which is rotatably connected to the other end of the swing arm through a second rotating shaft, and the other end is arranged on the extraction device after passing through the slide seat; Among them, the power mechanism can drive the slide rod device to slide in the slide seat and rotate at the same time through the swing arm, and the slide rod device drives the extraction device to take materials from the storage area of ​​the three-piece carton forming machine and place them on the conveying device.

22. The three-piece carton forming machine according to claim 21, characterized in that: The extraction device comprises: A load-bearing member connected to the other end of the slide bar device; A grabbing device is arranged on the bearing member and is used for grabbing materials.

23. The three-piece carton forming machine according to claim 22, characterized in that: The gripping device is at least one vacuum suction cup or at least one pneumatic clamp.

24. The three-piece carton forming machine according to claim 23, characterized in that: The pick-and-place device further comprises: a perturbation pipeline, wherein the perturbation pipeline comprises: At least one branch pipe, at least one branch pipe is arranged on the bearing member and is connected to at least one vacuum suction cup or at least one pneumatic clamp one by one; A first transfer device, the first transfer device is fixedly mounted on the frame and has a first axis that is colinear with the center axis of the first rotating shaft; A second transfer device, the second transfer device is fixed to the swing arm or the second rotating shaft and has a second axis that is colinear with the center axis of the second rotating shaft; a first trunk pipe, one end of which is used to connect to a vacuum pumping device and the other end of which is connected to the first transfer device; a second trunk pipe, one end of the second trunk pipe being connected to the first transfer device and the other end of the second trunk pipe being connected to the second transfer device; a third trunk pipe, one end of which is connected to the second transfer device and the other end of which is connected to each of the vacuum suction cups through at least one branch pipe; Among them, the first transfer device can connect the first trunk pipe with the second trunk pipe and allow the second trunk pipe to rotate around the first axis relative to the first trunk pipe, and the second transfer device can connect the third trunk pipe with the second trunk pipe and allow the second trunk pipe to rotate around the second axis relative to the third trunk pipe.

25. The three-piece carton forming machine according to claim 22, characterized in that: The slide bar device comprises: A sliding rod, one end of which is rotatably connected to the other end of the swing arm via a second rotating shaft; A first connecting end plate, one end of which is fixedly connected to the bearing member, and the other end of which is fixedly connected to the other end of the sliding rod, so as to enhance the connection strength between the sliding rod and the bearing member.

26. The three-piece carton forming machine according to claim 25, characterized in that: The slide bar device further comprises a reinforcing plate which is fixedly mounted on the bearing member and is fixedly connected to the slide bar.

27. The three-piece carton forming machine according to claim 22, characterized in that: The slide bar device comprises: a first sliding rod and a second sliding rod, wherein one end of the first sliding rod and the second sliding rod pass through the sliding seat and are arranged on the bearing member; A second connecting end plate, wherein the second connecting end plate is rotatably connected to the other end of the swing arm through a second rotating shaft, and the other ends of the first sliding rod and the second sliding rod are connected to the second connecting end plate.

28. The three-piece carton forming machine according to claim 21, characterized in that: The included angle between the center line of the swing arm at the initial position and the center line of the slide bar device along the length direction is in the range of 85° to 105°.

29. The three-piece carton forming machine according to claim 21, characterized in that: The power mechanism includes a motor, an engine, a swing cylinder or a component mainly composed of a cylinder, a rack and a gear and used to drive the swing arm to rotate.

30. The three-piece carton forming machine according to claim 1, characterized in that: The side paperboard silo comprises: A side paperboard material storage rack, wherein the side paperboard material storage rack is arranged on the frame; Side paperboard side guard plates, the side paperboard side guard plates are connected to the side paperboard material storage racks and are used to protect the side surfaces of the side paperboards; A pressing plate device, which is arranged on the side paperboard material storage rack and is used to press the top of the side paperboard; A paper support plate is arranged at the bottom of the side paperboard side guard plate and is used for supporting the side paperboard.

31. The three-piece carton forming machine according to claim 30, characterized in that: There are two side paperboard side guard plates, and both of the side paperboard side guard plates are arranged on a side of the side paperboard material storage rack away from the carton male mold.

32. The three-piece carton forming machine according to claim 30 or 31, characterized in that: The side paperboard and side guard plate are integral plate structures, and the width of the side paperboard and side guard plate is greater than the width of the side paperboard.

33. The three-piece carton forming machine according to claim 31, characterized in that: The pressing plate device comprises: A pressing plate sliding rod, the pressing plate sliding rod is fixedly connected to the side paperboard material storage rack and is located in the middle of the two side paperboard side guard plates; A pressure plate slider, the pressure plate slider can be slidably arranged on the pressure plate sliding rod; A pressure plate, one end of which is arranged on the pressure plate slider and moves along the pressure plate sliding rod along with the pressure plate slider, and the other end of which extends to the upper part of the side paperboard to press against the side paperboard under the action of gravity.

34. The three-piece carton forming machine according to claim 31, characterized in that: The bottom of the side paperboard side guard plate is provided with a long groove, and the paper support plate comprises: A support plate, which is fixed to the bottom of the side paperboard side guard plate and extends into the inner side of the side paperboard bin to support the side paperboard; The baffle plate can be slidably arranged at the bottom of the side paperboard side guard plate, and is used to stop the side paperboard from tilting forward and limit the falling position of the side paperboard.

35. The three-piece carton forming machine according to claim 30, characterized in that: The side paperboard bin also includes: A side guard plate adjusting device is connected to the two side paperboard side guard plates and is used to adjust the distance between the two side paperboard side guard plates.

36. The three-piece carton forming machine according to claim 35, characterized in that: The two side paperboard side guard plates are provided with shaft sleeves on one side facing the side paperboard material storage rack, and the side paperboard through holes are opened on the side paperboard material storage rack. The side guard plate adjustment device includes: The side guard plate forward and reverse screw rods are connected to the side paperboard material storage rack through a bearing seat, and one end of the side guard plate forward and reverse screw rods passes through the side paperboard through-hole and is inserted into two shaft sleeves through forward and reverse rotating T-shaped nuts; A side paperboard adjustment handle is installed at one end of the side guard plate forward and reverse screw rod passing through the side paperboard through hole, and is used to rotate the side guard plate forward and reverse screw rod to drive the two side paperboard side guard plates to move relative to or towards each other.

37. The three-piece carton forming machine according to claim 1, characterized in that: The carton male mold comprises: A male mold driving device, wherein the male mold driving device is arranged on the frame; A male mold module is installed on the male mold driving device to reciprocate up and down under the drive of the male mold driving device.

38. The three-piece carton forming machine according to claim 37, characterized in that: The male mold module comprises: Male mold forming plate; Two male mold guard plates, the two male mold guard plates are symmetrically arranged on two sides of the male mold forming plate facing the side paperboard bin; A driving connecting plate, one end of which is fixedly connected to the male mold forming plate, and the other end of which is connected to the male mold driving device.

39. The three-piece carton forming machine according to claim 38, characterized in that: The three-piece carton forming machine also includes: two side paperboard bending mechanisms, which are used to bend the side paperboards taken out by the side paperboard taking and placing device after they are pushed to the carton male mold.

40. The three-piece carton forming machine according to claim 39, characterized in that: The side paperboard bending mechanism comprises: A side paperboard bending power device, wherein the side paperboard bending power device is installed on the frame; A side paperboard bending plate is connected to the side paperboard bending power device so as to move toward the male mold guard plate to bend the side paperboard under the drive of the side paperboard bending power device.

41. The three-piece carton forming machine according to claim 1, characterized in that: The basic framework includes: a first CD guide rod and a second CD guide rod, wherein the first CD guide rod is parallel to the second CD guide rod; a first MD guide rod and a second MD guide rod, wherein the first MD guide rod is parallel to the second MD guide rod and perpendicular to the first CD guide rod; Four connecting seats, each of which comprises a first connecting seat through hole and a fixing portion perpendicular to the axis of the first connecting seat through hole; Four adjustment units, each of which is used to adjust the position of the base frame; Among them, the two ends of the first CD guide rod and the second CD guide rod respectively pass through the first connecting seat through holes of the two connecting seats and each end is connected to one of the connecting seats through an adjustment unit, and the two ends of the first MD guide rod and the second MD guide rod are respectively connected to a fixing part of the connecting seat.

42. The three-piece carton forming machine according to claim 41, characterized in that: The CD slide frame comprises: Two CD sliding frame end plates, each of the CD sliding frame end plates includes a CD guide sleeve; Two CD sliding frame guide rods, the two CD sliding frame guide rods are respectively connected to the CD sliding frame end plates; Wherein, the CD guide frame is respectively sleeved on the first CD guide rod and the second CD guide rod through the CD guide sleeves at both ends so as to be able to slide along the first CD guide rod and the second CD guide rod.

43. The three-piece carton forming machine according to claim 42, characterized in that: The corner mold fixing member comprises: A first side plate, wherein the first side plate is provided with two corner mold through holes, and the two CD sliding frame guide rods are respectively inserted into the two corner mold through holes through shaft sleeves; A second side plate, wherein the second side plate is vertically connected to the first side plate.

44. The three-piece carton forming machine according to claim 43, characterized in that: There are two CD-direction sliding frames, and two corner mold fixing members are symmetrically arranged on each CD-direction sliding frame, wherein the first side panels of the two corner mold fixing members on the same CD-direction sliding frame are arranged opposite to each other, and the second side panels of the two adjacent corner mold fixing members on different CD-direction sliding frames are arranged opposite to each other.

45. The three-piece carton forming machine according to claim 44, characterized in that: A second connection seat through hole is provided on one of the connection seats on the second CD guide rod side, the CD sliding frame end plate also includes a connection lug portion, each of the connection lug portions is provided with a lug hole, and the connection lug portion is located on the CD guide sleeve side of the CD sliding frame end plate, the adjustment device includes: a CD reversing mechanism, and the CD reversing mechanism includes: A first CD forward and reverse screw rod, which is connected to the connecting seats on both sides of the first CD guide rod through a bearing seat and inserted into two lug holes on the same side through a forward and reverse rotating T-shaped nut; A second CD-direction forward and reverse screw rod, which is connected to the connection seats on both sides of the second CD guide rod through a bearing seat, one end of which passes through the through hole of the second connection seat and is inserted into the two lug holes on the other side through a forward and reverse rotating T-shaped nut; A CD transmission device, wherein the CD transmission device is connected to the first CD forward and reverse screw rod and the second CD forward and reverse screw rod so that the first CD forward and reverse screw rod and the second CD forward and reverse screw rod rotate synchronously; A CD-direction adjustment handle is installed on one end of the second CD-direction forward and reverse screw rod passing through the connecting seat, and is used to adjust the two CD-direction sliding frames along the direction of the first CD guide rod.

46. ​​The three-piece carton forming machine according to claim 44, characterized in that: A positive and negative screw through hole is also provided between the two corner mold through holes on the first side plate, and the adjustment device further includes: an MD direction reversing mechanism, and the MD direction reversing mechanism includes: A sliding shaft, one end of which passes through and is rotatably connected to a connecting seat on one side of the first CD guide rod, and the sliding shaft is parallel to the first CD guide rod; Two forward and reverse screw rods of the two sliding frames, each of which is inserted into two forward and reverse screw rod through holes on the same CD-direction sliding frame through a pair of forward and reverse rotating T-shaped nuts, both ends of each CD-direction sliding frame can be rotatably connected to two CD-direction sliding frame end plates on the same CD-direction sliding frame, and the side close to the sliding shaft passes through the CD-direction sliding frame end plate; Two pairs of first bevel gears and second bevel gears, each of the first bevel gears is arranged on the forward and reverse screw rods of the sliding frame passing through the CD sliding frame end plate, and each of the second bevel gears is correspondingly arranged on the CD sliding frame end plate where the first bevel gear is located to mesh with the first bevel gear, wherein each of the second bevel gears is provided with a bevel gear hole; An MD-direction adjustment handle, wherein the MD-direction adjustment handle is installed on the sliding shaft passing through the connection seat on one side of the first CD guide rod; The sliding shaft is sequentially inserted into the two bevel gear holes on the same side to drive the forward and reverse screw rods of the two sliding frames to rotate synchronously when the sliding shaft rotates.

47. The three-piece carton forming machine according to claim 44, characterized in that: The carton forming master mold further includes: an MD sliding frame, and the MD sliding frame includes: Two MD sliding frame end plates, each of the MD sliding frame end plates includes an MD guide sleeve; Two MD-direction sliding frame guide rods, wherein the two MD-direction sliding frame guide rods are respectively connected to the two MD-direction sliding frame end plates; Wherein, the MD sliding frame is respectively connected to the first MD guide rod and the second MD guide rod through the MD guide sleeves at both ends, so as to be able to slide along the first MD guide rod and the second MD guide rod.

48. The three-piece carton forming machine according to claim 47, characterized in that: A long hole is provided on the second side plate of the corner mold fixing piece, and there are two MD-direction sliding frames. The two MD-direction sliding frame guide rods of each MD-direction sliding frame pass through the two symmetrical long holes of the second side plates to move synchronously with the corner mold fixing piece.

49. The three-piece carton forming machine according to claim 48, characterized in that: Each of the corner mold fixing parts also includes: a third side plate, which is parallel to the first side plate and sleeved on the two CD-direction sliding frame guide rods on the same side.

50. The three-piece carton forming machine according to claim 49, characterized in that: The carton forming master mold also includes: Four first glue pressing mechanisms, which are symmetrically arranged on the third side plate and are used to press glue spots between the side paperboard and the main paperboard along the direction of the first CD guide rod; Four second glue pressing mechanisms are symmetrically arranged on the second side plate, and are used to press the glue spots between the side paperboard and the main paperboard along the direction of the first MD guide rod.

51. The three-piece carton forming machine according to claim 50, characterized in that: The first glue pressing mechanism comprises: A first glue pressing plate, wherein the first glue pressing plate is perpendicular to the third side plate and faces the molding area of ​​the carton molding mother mold; The first glue pressing cylinder is arranged on the third side plate and is connected to the first glue pressing plate through a piston to drive the first glue pressing plate to reciprocate toward the molding area of ​​the carton molding mother mold.

52. The three-piece carton forming machine according to claim 51, characterized in that: The second glue pressing mechanism comprises: A second glue pressing plate, wherein the second glue pressing plate is perpendicular to the second side plate and faces the molding area of ​​the carton molding mother mold; The second glue pressing cylinder is arranged on the second side plate and connected to the second glue pressing plate through a piston to drive the second glue pressing plate to reciprocate toward the molding area of ​​the carton molding mother mold along a moving direction perpendicular to the first glue pressing plate.

53. The three-piece carton forming machine according to claim 51, characterized in that: The carton forming mother mold further comprises: a one-way mechanism, the one-way mechanism comprising: A blocking portion, the blocking portion is arranged on the third side plate on the upper side of the first glue pressing plate; a one-way rotating portion, the one-way rotating portion being rotatably disposed on the third side plate; When the carton male mold is punching the cardboard, the one-way rotating part can rotate toward the molding area of ​​the carton forming female mold, and when the carton male mold is withdrawn, the one-way rotating part stops at the blocking part to prevent the cardboard from being brought out of the carton forming female mold.

54. The three-piece carton forming machine according to claim 53, characterized in that: The carton forming mother mold also includes: a folding and pressing module, and there are four folding and pressing modules. The four folding and pressing modules are respectively arranged on one of the corner mold fixing parts and are used for stamping and forming a three-piece carton.

55. The three-piece carton forming machine according to claim 54, characterized in that: The folding and pressing module comprises: a first forming plate, the first forming plate being connected to the second side plate; a second forming plate, the second forming plate being connected to the first side plate; A third forming plate, the third forming plate being connected to the third side plate; Wherein, the third forming plates of two adjacent folding and pressing modules are plugged into each other.

56. The three-piece carton forming machine according to claim 1, characterized in that: The three-piece carton forming machine further comprises: a carton discharging device, the carton discharging device comprising: Out-of-box conveyor; A carton grabbing device, which can be slidably arranged on the carton conveying device and is used to grab the carton formed on the carton forming mother mold; The out-of-box conveying device is located at the lower side of the out-of-box conveying device and is used to convey the cartons placed by the out-of-box grabbing device.

57. The three-piece carton forming machine according to claim 56, characterized in that: The out-of-box conveying device comprises: A box-out substrate, the box-out substrate extending from the carton-forming mother mold to the box-out conveying device; An out-of-box synchronous conveyor belt, the out-of-box synchronous conveyor belt is arranged on the out-of-box substrate along the length direction of the out-of-box substrate; A box discharging power device is connected to the box discharging synchronous conveyor belt to drive the box discharging synchronous conveyor belt to rotate.

58. The three-piece carton forming machine according to claim 57, characterized in that: The out-of-box grabbing device comprises: An out-of-box sliding part, the out-of-box sliding part can be slidably arranged on the out-of-box synchronous conveyor belt; A box-out support portion, the box-out support portion being connected to the box-out sliding portion; The box-out suction cup is arranged at one end of the box-out support portion away from the box-out sliding portion, and is used to grab the carton from the carton forming mother mold.

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