Carton folding device

Abstract

The present invention discloses a carton folding device, comprising a cardboard conveying assembly, a carton conveying assembly, a folding assembly, and a bonding assembly. The folding assembly and the bonding assembly are arranged above the carton conveying assembly, the folding assembly is located at the input end of the carton conveying assembly, and the cardboard conveying assembly is located on the side of the folding assembly away from the bonding assembly. The folding assembly comprises a mounting bracket, a lifting mechanism, and a swing mechanism. The present invention can automatically fold and bond cardboard to form a carton for packaging. The folding assembly drives the cardboard down through the lifting mechanism and performs the initial folding of the cardboard under the limit of the mounting bracket to form the bottom plate and side plates of the carton. The swing mechanism pushes the cardboard to fold twice to form the top plate of the carton. Finally, the bonding assembly bonds the joints of the side plates and the top plate of the carton to form a carton for packaging products. The entire process is completed fully automatically, without the need for manual folding and bonding by staff, thereby greatly improving production efficiency.

Description

Technical Field

[0001] The present invention particularly relates to a carton folding device. Background Art

[0002] Currently, during the production process, workers are usually required to manually fold cardboard into cartons and then pack the products, which requires high labor costs and low production efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a carton folding device to solve at least one of the above problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a carton folding device, including a cardboard transmission component, a carton transmission component, a folding component and a bonding component. The folding component and the bonding component are arranged above the carton transmission component. The folding component is located at the input end of the carton transmission component. The cardboard transmission component is located on the side of the folding component away from the bonding component. The folding component includes a mounting bracket and a lifting mechanism and a swinging mechanism arranged on the mounting bracket.

[0005] In the above-mentioned carton folding device, the mounting bracket includes a frame and a plurality of baffles arranged on the frame. The lifting mechanism presses down the cardboard transmitted by the cardboard transmission component to the top of the carton transmission component, so that the descending cardboard is folded under the action of the baffles to form the bottom wall and side walls of the carton.

[0006] In the above-mentioned carton folding device, a lifting mechanism is provided on both sides of the carton transmission assembly. The lifting mechanism includes a lifting platform, a driving member for driving the lifting platform to lift and lower, and a pair of first claws rotatably connected to the side of the lifting platform facing the cardboard. The lifting platform is also provided with a first cylinder for pushing the first claw to rotate. The first cylinder pushes the first claw to open so as to press the cardboard down when the lifting platform descends.

[0007] In the above-mentioned carton folding device, the driving member is a first driving motor, a screw is connected to the output shaft of the first driving motor, and a screw nut is provided on the lifting platform. The first driving motor drives the lifting platform to rise or fall through the matching screw and screw nut.

[0008] In the above-mentioned carton folding device, a mounting plate is connected between the frames on both sides of the carton transmission component, and a driving wheel, a driven wheel and a transmission belt transmitting between the two are provided at the bottom of the mounting plate. The screw rods connected on the two lifting platforms pass through the mounting plate and are respectively connected to the driving wheel and the driven wheel on the mounting plate, and the first drive motor is connected to one of the two screw rods.

[0009] In the above-mentioned carton folding device, the swing mechanism includes a second drive motor, a connecting rod and a horizontally arranged rocker arm. The connecting rod is connected between the second drive motor and the rocker arm, and drives the rocker arm to swing up and down to push the top wall of the carton to cover the top of the side wall.

[0010] In the above-mentioned carton folding device, a pushing cylinder and a folding plate rotatably connected to the mounting bracket are also provided on the mounting bracket. The pushing cylinder rotates by pushing the folding plate to bend the top of the carton side wall to form a hinge.

[0011] In the above-mentioned carton folding device, the bonding assembly includes a bonding bracket, on which is provided a pressing cylinder and a glue gun for spraying glue onto the folding leaf of the side wall of the carton. The pressing cylinder is provided with a pressing plate, which moves under the action of the pressing cylinder and presses the top plate of the carton onto the folding leaf after spraying glue.

[0012] In the above-mentioned carton folding device, the bonding assembly also includes two pairs of second claws rotatably connected to the bonding bracket, and the two pairs of claws are respectively located on both sides of the carton transmission assembly. The bonding bracket is also provided with a second cylinder for pushing the second claws to rotate, and the second cylinder pushes the second claws to open so as to tension the two sides of the carton when the clamping plate is pressed down.

[0013] In the above-mentioned carton folding device, the carton transmission assembly includes a conveyor belt and a limiting mechanism arranged on the conveyor belt. The limiting mechanism includes a mounting part fixed on the top of the conveyor belt, a limiting part rotatably connected to the mounting part in the middle, and a driving cylinder fixed on the bottom of the conveyor belt. The upper end of the limiting part has a pressure plate located above the mounting part, and the lower end of the limiting part has a push plate located below the mounting part. The driving cylinder drives the pressure plate to rotate by telescoping the push plate, so that the pressure plate limits the top plate of the carton or disengages from the top plate of the carton.

[0014] The beneficial effects of the present invention are:

[0015] A carton folding device includes a cardboard conveying assembly, a carton conveying assembly, a folding assembly, and a bonding assembly. The folding assembly and bonding assembly are arranged above the carton conveying assembly. The folding assembly is located at the input end of the carton conveying assembly, and the cardboard conveying assembly is located on the side of the folding assembly away from the bonding assembly. The folding assembly includes a mounting bracket and a lifting mechanism and a swinging mechanism provided on the mounting bracket. This technical solution has the following technical effects:

[0016] The present invention cooperates with a cardboard transmission component, a carton transmission component, a folding component and a bonding component, so that the carton folding device can automatically fold and bond the cardboard to form a carton for packaging. The folding component drives the cardboard down through a lifting mechanism provided on the mounting bracket and realizes the initial folding of the cardboard under the limit of the mounting bracket to form the bottom plate and side plates of the carton. The swing of the swing mechanism promotes the secondary folding of the cardboard to form the top plate of the carton. Finally, the bonding component bonds the joints between the side plates and the top plate of the carton to form a carton for packaging products. The entire process is completed fully automatically without the need for manual folding and bonding by staff, thereby greatly improving production efficiency.

[0017] The mounting bracket includes a frame and a plurality of baffles mounted on the frame. The lifting mechanism presses down on the cardboard conveyed by the cardboard conveyor assembly to the top of the carton conveyor assembly, so that the descending cardboard is folded under the action of the baffles to form the bottom and side walls of the carton. The baffles can block and limit the position of the cardboard at certain positions, so that when the cardboard is pressed down, the baffles on both sides are limited by the multiple baffles, causing an initial fold to occur to form the bottom and side walls of the carton. This eliminates the need for a complex movable mechanism to fold the cardboard, simplifies the structure of the carton folding device, improves the stability of the cardboard folding, and makes the baffles less susceptible to damage, which can greatly extend the service life.

[0018] A lifting mechanism is installed on both sides of the carton transport assembly. This mechanism includes a lifting platform, a drive element that raises and lowers the lifting platform, and a pair of first claws rotatably connected to the side of the lifting platform facing the cardboard. The lifting platform is also equipped with a first cylinder that rotates the first claws. The first cylinder pushes the first claws open, pressing down on the cardboard as the lifting platform descends. When the cardboard is folded, the lifting mechanisms on both sides simultaneously press down on the cardboard, balancing the force on both sides and improving the folding effect. The first claws, driven by the first cylinder, can be opened during folding to achieve stable folding of the cardboard. After folding, the first claws are quickly retracted to prevent them from blocking the carton from continuing to move toward the bonding assembly.

[0019] The driving member is a first driving motor, and a lead screw is connected to the output shaft of the first driving motor. A lead screw nut is provided on the lifting platform. The first driving motor drives the lifting platform to rise or fall through the matching lead screw and lead screw nut, which extends the service life. The lead screw and the lead screw nut can precisely control the micro-feed, which can greatly improve the transmission accuracy between the driving member and the lifting platform, so that the lifting platform can accurately move to the set height to fold the cardboard.

[0020] A mounting plate connects the frames on both sides of the carton transport assembly. The bottom of the mounting plate is equipped with a driving wheel, a driven wheel, and a transmission belt running between them. Screws connected to the two lifting platforms pass through the mounting plate and are respectively connected to the driving and driven wheels on the mounting plate. The first drive motor is connected to one of the two screws. The arrangement of the driving wheel, driven wheel, and transmission belt achieves the linkage of the two screws, allowing both lifting platforms to be raised and lowered simultaneously using only a single first drive motor, significantly reducing equipment weight and production costs.

[0021] The swing mechanism includes a second drive motor, a connecting rod, and a horizontally arranged swing arm. The connecting rod is connected between the second drive motor and the swing arm, driving the swing arm to swing up and down to push the top wall of the carton to cover the top of the side walls. The second drive motor drives the connecting rod to rotate, which drives the swing arm at the end of the connecting rod to swing up and down. During the downward swing, the swing arm contacts the cardboard and pushes it to fold, forming a top wall that covers the top of the two side walls. At this time, the cardboard is folded into a carton. The output shaft of the second drive motor then reverses, driving the swing arm to swing upward through the connecting rod and reset, waiting for the next swing. This simple structure can achieve the top folding of the carton, and the operation is stable and reliable.

[0022] The mounting bracket is also provided with a pushing cylinder and a folding plate rotatably connected to the mounting bracket. The pushing cylinder pushes the folding plate to rotate to bend the top of the side wall of the carton to form a hinge. The driving end of the pushing cylinder drives the folding plate to rotate by telescoping, so that the folding plate extends toward the side wall on the shorter side and folds the top of the side wall into a hinge, so as to facilitate subsequent glue spraying and bonding between the top panel and the side panel of the carton. The folding plate is pushed by the pushing cylinder to generate a fold. The pushing force of the pushing cylinder is large, which facilitates the rapid formation of a fold.

[0023] The bonding assembly includes a bonding bracket, which is provided with a pressing cylinder and a glue gun for spraying glue onto the folds of the side walls of the carton. The pressing cylinder is provided with a pressing plate, which moves under the action of the pressing cylinder and presses the top plate of the carton onto the folds after spraying glue. The output shaft of the pressing cylinder drives the pressing plate downward to press the top wall of the carton onto the glue-sprayed surface of the folds, so that the folds sprayed with glue are firmly bonded to the top wall of the carton, thereby ensuring the strength of the carton and preventing separation at the carton joints.

[0024] The bonding assembly also includes two pairs of second jaws rotatably connected to the bonding bracket, one on each side of the carton conveyor assembly. The bonding bracket is also equipped with a second cylinder that rotates the second jaws. The second cylinder pushes the second jaws open, tensioning the sides of the carton when the pressure plate presses down. When the pressure plate presses down, the second jaws prevent the carton sidewalls from bending and deforming under the pressure of the pressure plate, maintaining the carton's condition. After bonding is complete, the second cylinder pushes the second jaws to retract and disengage from the carton, preventing the second jaws from blocking the conveyor belt from continuing to transport the bonded carton to the next process.

[0025] The carton transmission assembly includes a conveyor belt and a limiting mechanism provided on the conveyor belt. The limiting mechanism includes a mounting member fixed to the top of the conveyor belt, a limiting member rotatably connected to the mounting member in the middle, and a driving cylinder fixed to the bottom of the conveyor belt. The upper end of the limiting member has a pressure plate located above the mounting member, and the lower end of the limiting member has a push plate located below the mounting member. The driving cylinder drives the pressure plate to rotate by telescopically pushing the push plate so that the pressure plate limits the top plate of the carton or disengages from the top plate of the carton. After the cardboard is folded into a carton, the output shaft of the driving cylinder retracts from the extended state, causing the limiting member to reset under the action of the torsion spring, so that the pressure plate presses the top wall of the carton downward, so that the top wall of the carton remains in a position above the fold, preventing the top wall of the carton from freely moving away from the fold, so as to facilitate subsequent bonding.

[0026] The features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] Figure 1 This is a three-dimensional diagram of a carton folding device according to the present invention;

[0029] Figure 2 This is a schematic diagram of a carton folding device of the present invention when folding a carton;

[0030] Figure 3 This is a partial schematic diagram of a carton folding device according to the present invention;

[0031] Figure 4 A three-dimensional folding component Figure 1 ;

[0032] Figure 5 A three-dimensional folding component Figure 2 ;

[0033] Figure 6 is a perspective view of the bonding assembly;

[0034] Figure 7 It is a three-dimensional diagram of the limiting mechanism;

[0035] Figure 8 Schematic diagram of an unfolded cardboard;

[0036] Figure 9 Schematic diagram of the cardboard after the initial folding;

[0037] Figure 10 This is a schematic diagram of a folded carton.

[0038] Reference numerals:

[0039] 100. Cardboard transmission component;

[0040] 200, carton transport assembly; 210, conveyor belt; 220, limit mechanism; 221, mounting member; 222, drive cylinder; 223, limit member; 2231, pressure plate; 2232, push plate; 224, torsion spring;

[0041] 300, folding assembly; 310, mounting bracket; 311, frame; 312, baffle; 313, mounting plate; 3131, driving pulley; 3132, driven pulley; 3133, transmission belt; 314, pushing cylinder; 315, folding plate; 320, lifting mechanism; 321, lifting platform; 322, first clamping claw; 323, first cylinder; 324, driving member; 325, screw rod; 326, screw rod nut; 330, swing mechanism; 331, second driving motor; 332, connecting rod; 333, swing arm;

[0042] 400, bonding assembly; 410, bonding bracket; 420, pressing cylinder; 430, pressing plate; 440, glue gun; 450, second clamping jaw; 460, second cylinder;

[0043] 510, cardboard; 520, carton; 521, bottom wall; 522, side wall; 523, hinge; 524, top wall. DETAILED DESCRIPTION

[0044] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise explicitly specified.

[0047] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0049] Example:

[0050] A carton folding device, such as Figures 1 to 10As shown, the paperboard conveying assembly 100, the carton conveying assembly 200, the folding assembly 300 and the bonding assembly 400 are both arranged above the carton conveying assembly 200, with the folding assembly 300 located at the input end of the carton conveying assembly 200, and the paperboard conveying assembly 100 located on the side of the folding assembly 300 away from the bonding assembly 400. The paperboard conveying assembly 100 is used to convey the unfolded paperboard 510 to the folding assembly 300. The folding assembly 300 includes a mounting bracket 310 and a lifting mechanism 320 and a swing mechanism 330 provided on the mounting bracket 310, so as to fold the paperboard 510 into a carton 520 and press it down to the carton conveying assembly 200 for conveyance. The bonding assembly 400 will bond the joints of the carton 520 during the conveyance of the carton 520.

[0051] like Figure 3 As shown, in this embodiment, the mounting bracket 310 includes a frame 311 and baffles 312. A plurality of baffles 312 are provided, and the plurality of baffles 312 are respectively arranged at different positions on the frame 311. The baffles 312 can block and limit portions of the cardboard 510. When the cardboard 510 is pressed downward, both sides of the baffles 312 are limited by the baffles 312, causing an initial folding to occur, thereby forming the bottom wall 521 and side walls 522 of the carton 520. This eliminates the need for a complex movable mechanism to fold the cardboard 510, simplifies the structure of the carton folding device, improves the stability of the folding of the cardboard 510, and greatly extends the service life of the baffles 312, which are less susceptible to damage.

[0052] The folding assembly 300 includes a mounting bracket 310, a lifting mechanism 320, and a swinging mechanism 330. Two lifting mechanisms 320 are provided, and the two lifting mechanisms 320 are symmetrically arranged on the mounting brackets 310 on both sides of the carton conveying assembly 200. The lifting mechanism 320 includes a lifting platform 321 and a driving member 324. The driving member 324 is fixed to the mounting bracket 310. The driving end of the driving member 324 is connected to the lifting platform 321 to drive the lifting platform 321 to move up and down. A pair of first claws 322 and a pair of first cylinders 323 are provided on the lifting platform 321. The first claw 322 is rotatably connected to the side of the lifting platform 321 close to the cardboard 510. The two first cylinders 323 are respectively connected to the two first claws 322 to drive the first claws 322 to rotate. The mounting bracket 310 is further provided with a pushing cylinder 314 and a folding plate 315. The folding plate 315 is rotatably connected to the mounting bracket 310. The output end of the pushing cylinder 314 is connected to the folding plate 315, so that the pushing cylinder 314 rotates by pushing the folding plate 315 to bend the top of the side wall 522 of the carton 520 to form a hinge 523. The swing mechanism 330 in this embodiment includes a second drive motor 331, a connecting rod 332, and a horizontally arranged swing rod 333, which is provided on the mounting bracket 310. The connecting rod 332 is connected between the output shaft of the second drive motor 331 and the swing rod 333. The second drive motor 331 drives the connecting rod 332 to rotate, thereby driving the swing rod 333 at the end of the connecting rod 332 to swing up and down.

[0053] like Figure 7 As shown, the carton transmission assembly 200 includes a conveyor belt 210 and a limiting mechanism 220 provided on the conveyor belt 210. The limiting mechanism 220 includes a mounting member 221 fixed to the top of the conveyor belt 210, a driving cylinder 222 fixed to the bottom of the conveyor belt 210, and a limiting member 223 rotatably connected to the mounting member 221 in the middle. A torsion spring 224 is further provided between the limiting member 223 and the mounting member 221. The torsion spring 224 can limit the limiting member 223 so that the limiting member 223 remains in a position to press the top wall 524 of the carton 520 onto the fold 523. The driving cylinder 222 is located directly below the mounting member 221. The upper end of the limiting member 223 is bent to form a pressure plate 2231 located above the mounting member 221. The lower end of the limiting member 223 is bent to form a push plate 2232 located below the mounting member 221. The output shaft of the driving cylinder 222 is set upward and can be extended upward to drive the limiting member 223 away from the carton 520 by pushing the push plate 2232. When the output shaft of the driving cylinder 222 retracts, the limiting member 223 will be reset under the action of the torsion spring 224.

[0054] The folding process of carton 520 is as follows:

[0055] 1. When the cardboard transmission component 100 Figure 8When the unfolded cardboard 510 is transferred to the top of the input end of the carton conveying assembly 200, the height of the lifting platforms 321 on both sides of the cardboard 510 is higher than the cardboard 510, and the first cylinder 323 on the lifting platform 321 drives the first claw 322 to open to the top of the cardboard 510, and then the driving member 324 drives the lifting platform 321 to descend, so that the first claw 322 presses the cardboard 510 onto the carton conveying assembly 200 while the lifting platform 321 descends. Figure 2 As shown, during the process of being pressed down, the paperboard 510 is limited by the plurality of baffles 312 and undergoes initial folding, so as to fold the paperboard 510 into the following form: Figure 9 The structure shown has a bottom wall 521 and two side walls 522 .

[0056] 2. The driving end of the push cylinder 314 drives the folding plate 315 to rotate by extension, so that the folding plate 315 extends toward the side wall 522 on the shorter side and folds the top of the side wall 522 into a hinge 523.

[0057] 3. The output shaft of the second driving motor 331 drives the connecting rod 332 to rotate, so that the swing rod 333 at the end of the connecting rod 332 swings downward along with the connecting rod 332. Figure 3 As shown, when the swing rod 333 swings from top to bottom, it contacts the side wall 522 on the longer side and pushes the side wall 522 to fold, as shown in FIG. Figure 10 As shown, a top wall 524 covering the top of the two side walls 522 is formed. At this time, the cardboard 510 is folded into a carton 520, and then the output shaft of the second drive motor 331 is reversed to drive the swing arm 333 to swing upward and reset through the connecting rod 332, waiting for the next swing.

[0058] 4. After the cardboard 510 is folded into the carton 520, the output shaft of the driving cylinder 222 retracts from the extended state, so that the limit member 223 is reset under the action of the torsion spring 224, so that the pressure plate 2231 presses down the top wall 524 of the carton 520, so that the top wall 524 of the carton 520 remains in a position above the hinge 523.

[0059] 5. The first cylinder 323 on the lifting platform 321 drives the first claw 322 to rotate and retract to the side of the lifting platform 321 to disengage from the position extending into the interior of the carton 520, so that the folded carton 520 continues to move toward the bonding assembly 400 under the push of the conveyor belt 210 and the limiting mechanism 220. At the same time, the driving member 324 drives the lifting platform 321 to rise and reset to wait for the next folding.

[0060] The driving member 324 in this embodiment can be a cylinder or a motor. Preferably, the driving member 324 is a first driving motor. A screw 325 is connected to the output shaft of the first driving motor. A screw nut 326 is provided on the lifting platform 321 and passes through and is fixed to the lifting platform 321. The screw 325 and the screw nut 326 cooperate so that the output shaft of the first driving motor drives the screw 325 to rotate. The rotating screw 325 drives the screw nut 326 and the lifting platform 321 to rise or fall. By setting the driving member 324 as the first driving motor and arranging the screw 325 and the screw nut 326 between the first driving motor and the lifting platform 321 for transmission, the service life is extended. At the same time, the screw 325 and the screw nut 326 can precisely control the micro-feed between the screw 325 and the screw nut 326, which can greatly improve the transmission accuracy between the driving member 324 and the lifting platform 321, so that the lifting platform 321 can accurately move to a set height to fold the cardboard 510. Of course, it is understandable that in order to prevent the lifting platform 321 from shaking in the horizontal direction when moving up and down, this embodiment provides a guide rail on the mounting bracket 310, and the guide rail is passed through the lifting platform 321, so that the lifting platform 321 can slide up and down along the guide rail, thereby ensuring the stability of the lifting platform 321.

[0061] This embodiment is preferably, as Figure 5 As shown, a mounting plate 313 is connected between the mounting brackets 310 on both sides of the conveyor belt 210. A driving pulley 3131, a driven pulley 3132, and a transmission belt 3133 are provided at the bottom of the mounting plate 313. Screws 325 connected to the two lifting platforms 321 pass through the mounting plate 313 and are respectively linked to the driving pulley 3131 and the driven pulley 3132 at the bottom of the mounting plate 313. There is only one first drive motor, located on top of and connected to one of the two screws 325. The arrangement of the driving pulley 3131, the driven pulley 3132, and the transmission belt 3133 enables the linkage of the two screws 325, allowing the two lifting platforms 321 to be raised and lowered simultaneously using only a single first drive motor, significantly reducing equipment weight and production costs.

[0062] like Figure 6As shown, the bonding assembly 400 in this embodiment includes a bonding bracket 410, a pressing cylinder 420, and a glue gun 440. The pressing cylinder 420 is fixed to the bonding bracket 410. The output shaft of the pressing cylinder 420 faces downward and is connected to the pressing plate 430. The output shaft of the pressing cylinder 420 can drive the pressing plate 430 to move up and down. The glue gun 440 is tilted on the bonding bracket 410 to spray glue on the side of the hinge 523 toward the top wall 524 of the carton 520. The bonding assembly 400 also includes two pairs of second clamping jaws 450 rotatably connected to the bonding bracket 410 and a second cylinder 460 that drives the second clamping jaws 450 to rotate. The two pairs of second clamping jaws 450 are located on both sides of the carton conveying assembly 200.

[0063] When the folded carton 520 moves to the bonding assembly 400, the second cylinder 460 pushes the second claw 450 to open and extend into the carton 520 to tension and support the two side walls 522 of the carton 520, and then the tilted glue gun 440 sprays glue on the hinge 523, and then the output shaft of the clamping cylinder 420 drives the clamping plate 430 to move downward to press the top wall 524 of the carton 520 against the glue spraying surface of the hinge 523, so that the hinge 523 sprayed with glue is firmly bonded to the top wall 524 of the carton 520, ensuring the strength of the carton 520 and preventing the carton 520 from separating at the connection. Then the clamping plate 430 moves upward, and at the same time, the second cylinder 460 pushes the second clamp to retract and disengage from the carton 520, so as to continue to convey the bonded carton 520 to the next process through the conveyor belt 210. When the pressing plate 430 is pressed downward, the second claw 450 can prevent the side wall 522 of the carton 520 from bending and deforming under the pressure of the pressing plate 430 , thereby ensuring the state of the carton 520 .

[0064] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A carton folding device, characterized in that: The invention comprises a cardboard transmission component, a carton transmission component, a folding component and a bonding component, wherein the folding component and the bonding component are arranged above the carton transmission component, the folding component is located at the input end of the carton transmission component, and the cardboard transmission component is located on the side of the folding component away from the bonding component. The folding component comprises a mounting bracket and a lifting mechanism and a swing mechanism arranged on the mounting bracket. The mounting bracket comprises a frame body and a plurality of baffles arranged on the frame body. The lifting mechanism presses down the cardboard transmitted by the cardboard transmission component to the top of the carton transmission component, so that the descending cardboard is folded under the action of the baffle to form the bottom wall and side wall of the carton. Lifting mechanisms are provided on both sides of the carton transmission component, and the lifting mechanism comprises a lifting platform, a driving member for driving the lifting platform to rise and fall, and a pair of rotating A first claw is connected to the side of the lifting platform facing the cardboard, and the lifting platform is also provided with a first cylinder that pushes the first claw to rotate. The first cylinder pushes the first claw to open to press the cardboard down when the lifting platform descends. The driving member is a first driving motor, and a screw rod is connected to the output shaft of the first driving motor. A screw rod nut is provided on the lifting platform. The first driving motor drives the lifting platform to rise or fall through the matching screw rod and screw rod nut. A mounting plate is connected between the frames on both sides of the carton transmission assembly, and a driving wheel, a driven wheel and a transmission belt transmitted between the two are provided at the bottom of the mounting plate. The screw rods connected to the two lifting platforms pass through the mounting plate and are respectively connected to the driving wheel and the driven wheel on the mounting plate. The first driving motor is connected to one of the two screw rods.

2. A carton folding device according to claim 1, characterized in that: The swing mechanism includes a second drive motor, a connecting rod and a horizontally arranged swing rod. The connecting rod is connected between the second drive motor and the swing rod, and drives the swing rod to swing up and down to push the top wall of the carton to cover the top of the side wall.

3. The carton folding device according to claim 1, characterized in that: The mounting bracket is also provided with a pushing cylinder and a folding plate rotatably connected to the mounting bracket. The pushing cylinder pushes the folding plate to rotate so as to bend the top of the side wall of the carton to form a hinge.

4. A carton folding device according to claim 3, characterized in that: The bonding assembly includes a bonding bracket, on which a pressing cylinder and a glue gun for spraying glue onto the folding of the side wall of the carton are provided. The pressing cylinder is provided with a pressing plate, which moves under the action of the pressing cylinder and presses the top plate of the carton onto the folding after spraying glue.

5. A carton folding device according to claim 4, characterized in that: The bonding assembly also includes two pairs of second claws rotatably connected to the bonding bracket, and the two pairs of second claws are respectively located on both sides of the carton transmission assembly. The bonding bracket is also provided with a second cylinder for pushing the second claws to rotate, and the second cylinder pushes the second claws to open so as to tension the two sides of the carton when the clamping plate is pressed down.

6. The carton folding device according to claim 1, characterized in that: The carton transmission assembly includes a conveyor belt and a limiting mechanism provided on the conveyor belt, the limiting mechanism includes a mounting member fixed on the top of the conveyor belt, a limiting member rotatably connected to the mounting member in the middle, and a driving cylinder fixed to the bottom of the conveyor belt, the upper end of the limiting member has a pressure plate located above the mounting member, the lower end of the limiting member has a push plate located below the mounting member, the driving cylinder pushes the push plate by telescoping to drive the pressure plate to rotate, so that the pressure plate limits the top plate of the carton or disengages from the top plate of the carton.

Images