Automatic paperboard folding mechanism and automatic paperboard clamping device applying same

Abstract

The utility model relates to the technical field of packaging machinery, in particular to an automatic paperboard folding mechanism and an automatic paperboard clamping device using the same. The automatic paperboard folding mechanism comprises a positioning mechanism used for positioning conveyed paperboards and cooperating with a folding mechanism to complete folding of the paperboards; the positioning mechanism comprises a bearing platform which is used for containing a paperboard and can elastically descend, a circumferential positioning assembly arranged around the bearing platform, and side plate forming assemblies arranged on the two sides of the bearing platform correspondingly. The folding mechanism is driven by a first driving part to integrally move and comprises a liftable forming mold used for fixing the bottom plate and cooperating with the bottom plate to complete paperboard forming; the side lug folding assembly is arranged on the side edge of the forming mold corresponding to the position of the side lug and is used for bending and forming the first side lug A, the first side lug B, the second side lug A and the second side lug B; according to the paperboard folding device, the flat-plate-shaped paperboard is automatically folded into a set shape, and compared with manual paperboard folding, paperboard folding is more efficient and stable.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to an automatic cardboard folding mechanism and an automatic cardboard clamping device using the mechanism. Background Technology

[0002] Paper packaging boxes are packaging containers made from paper materials (such as corrugated paper, white cardboard, kraft paper, etc.) and are widely used in food, gifts, logistics and transportation fields. Their core functions include protecting products, increasing the added value of goods, and facilitating storage and transportation.

[0003] Grey board is an environmentally friendly packaging material made from recycled waste paper, commonly used in various packaging boxes, folders, photo frame back panels, etc. Currently, the process of folding flat grey board with creases into a predetermined shape and then clamping the shaped grey board into a box is done manually. This process cannot be automated, resulting in low efficiency, high cost, high error rates, and a large footprint. Therefore, designing an automatic grey board folding and automatic grey board feeding-folding-clamping device is a problem that urgently needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic cardboard folding mechanism and an automatic cardboard clamping device using the mechanism, so as to solve the problem that in the prior art, folding flat gray boards with creases into a predetermined shape and then clamping the predetermined shape gray boards into the ground box are all done manually, which cannot be automated, resulting in low efficiency and high cost.

[0005] The technical solution of this utility model is: an automatic cardboard folding mechanism, used to fold an initially flat cardboard into a predetermined shape. The flat cardboard includes a base plate, a first side plate and a second side plate disposed on both sides of the base plate along a first direction. The first side plate extends to both sides along a second direction with a first side lug A and a first side lug B, and the second side plate extends to both sides along a second direction with a second side lug A and a second side lug B. The second direction is perpendicular to the first direction. Creases are provided at all points where the cardboard needs to be folded. The mechanism includes:

[0006] The positioning mechanism is used to position the conveyed cardboard and cooperate with the folding mechanism to complete the folding of the cardboard; the positioning mechanism includes a support platform for placing the cardboard and which can be elastically lowered, a circumferential positioning component arranged around the support platform, and side plate forming components respectively arranged on both sides of the support platform.

[0007] The folding mechanism, driven by a first driving member for overall movement, includes:

[0008] The adjustable forming mold is used to fix the base plate and cooperate in completing the cardboard forming process;

[0009] A side-ear folding assembly is arranged at the side of the forming die corresponding to the position of the side-ear, and is used for bending and forming the first side-ear A, the first side-ear B, the second side-ear A and the second side-ear B.

[0010] A clamping driving assembly is arranged to open and close, and is used for clamping and fixing the formed first side plate and the second side plate on the forming die.

[0011] Preferably, when the paperboard is positioned by the positioning mechanism on the bearing platform, the length of the bearing platform placed at the first side plate is less than or equal to the length of the first side plate, and the length of the bearing platform placed at the second side plate is less than or equal to the length of the second side plate; one of the bearing platforms is installed on a plurality of elastic guiding and resetting assemblies;

[0012] The circumferential positioning assembly comprises a first positioning module arranged in a first direction and a second positioning module arranged in a second direction.

[0013] The side plate forming assembly comprises a pair of first side plate forming plates and second side plate forming plates arranged vertically and spaced apart oppositely, and the distance between the first side plate forming plates and the second side plate forming plates corresponds to the size of the bottom plate in the width direction; when the bearing platform is at the highest point of its stroke, the top points of the first side plate forming plates and the second side plate forming plates are lower than the top surface of the bearing platform.

[0014] Preferably, the forming die is driven to lift by a second driving member, and the second driving member is installed on the mounting plate.

[0015] The side-ear folding assembly is four positioning pins fixed on the mounting plate, and the axis of each positioning pin is arranged vertically; when the forming die is at the highest point of its stroke, the needle tips of the four positioning pins are lower than the bottom surface of the forming die.

[0016] The clamping driving assembly is a clamping jaw cylinder, and the clamping part is a clamping jaw.

[0017] Preferably, each of the elastic guiding and resetting assemblies comprises a flange type linear bearing fixedly arranged and a guiding rod penetrating through the flange type linear bearing; the top end of the guiding rod is fixed on the bearing platform, a helical spring is sleeved on the outer periphery of the guiding rod and located between the flange end surface of the flange type linear bearing and the bearing platform, and is used for supporting the bearing platform; a baffle is sleeved on the bottom end of the guiding rod to form mechanical limiting of the maximum lifting stroke of the guiding rod.

[0018] The first positioning module comprises first positioning plates and second positioning plates arranged on both sides of the bearing platform, and a third driving member driving the second positioning plate to approach or move away from the first positioning plate; the second positioning module comprises third positioning plates and fourth positioning plates arranged on both sides of the bearing platform, and a fourth driving member driving the fourth positioning plate to approach or move away from the third positioning plate.

[0019] The first adsorption assembly is arranged on the forming die, and the first adsorption assembly adsorbs and fixes the paperboard attached to the bottom surface of the forming die.

[0020] The second adsorption assembly is arranged on the bearing platform, and the second adsorption assembly adsorbs and fixes the paperboard placed on the bearing platform.

[0021] The utility model also provides a paperboard automatic clamping device, including:

[0022] The paperboard automatic folding mechanism;

[0023] The feeding mechanism is used for realizing uninterrupted feeding of the flat paperboard, and comprises a storage bin and at least one group of jacking type feeding assemblies arranged in the storage bin.

[0024] The taking mechanism takes and places the paperboard in the feeding mechanism on the positioning mechanism, and comprises a negative pressure suction assembly and a fifth driving member for driving the negative pressure suction assembly to move back and forth.

[0025] The clamping mechanism comprises a conveying assembly for continuously conveying the box, a guide limiting assembly arranged above the conveying assembly and guiding the conveying of the box, and a positioning clamping assembly arranged on the guide limiting assembly and used for clamping and fixing the box conveyed to the predetermined position.

[0026] Preferably, the feeding mechanism further comprises a layered anti-interference assembly, the layered anti-interference assembly is used for realizing non-interference between the paperboard taken by the taking mechanism and another paperboard below the paperboard, and the layered anti-interference assembly comprises a first brush module and a second brush module which are both adjustable in position and arranged on both sides of a taking position of the paperboard stack.

[0027] The negative pressure suction assembly is a negative pressure suction disc assembly, and the fifth driving member is a linear module.

[0028] The guide limiting assembly comprises a pair of guide railings arranged in parallel, and the positioning clamping assembly comprises a clamping module and a fixing module.

[0029] Preferably, the feeding assembly comprises a material plate and a sixth driving member for driving the material plate to lift.

[0030] The negative pressure suction disc assembly comprises a suction disc and a seventh driving member for driving the suction disc to lift, and the seventh driving member is mounted on a moving part of the linear module.

[0031] Preferably, the clamping module comprises a pair of clamping modules arranged on a pair of guide railings, respectively, each clamping module comprises a blocking block and an eighth driving member for driving the blocking block to move back and forth in a direction perpendicular to the conveying direction of the conveying assembly.

[0032] The fixed module comprises a fixed plate fixed on one guide rail, and a push plate module arranged on the other guide rail, wherein the push plate module comprises a push plate and a ninth driving element for driving the push plate to move close to or away from the fixed plate.

[0033] Preferably, the first brush module comprises a first brush and a linear guide rail assembly on which the first brush is arranged, and the linear guide rail assembly is arranged on the frame.

[0034] The second brush module comprises a second brush and a tenth driving element for driving the second brush to move away from or close to the first brush.

[0035] Preferably, the first driving element drives the folding mechanism to move up and down and to move the folding mechanism from the positioning mechanism to the ground box directly above the fixed module.

[0036] Compared with the prior art, the paperboard automatic folding mechanism has the following advantages:

[0037] (1) The paperboard automatic folding mechanism comprises a positioning mechanism, a side ear folding assembly, a first side plate folding assembly, a second side plate folding assembly, a clamping part, a bearing platform and a folding mechanism.

[0038] (2) The paperboard automatic folding mechanism comprises a positioning mechanism, a side ear folding assembly, a first side plate folding assembly, a second side plate folding assembly, a clamping part, a bearing platform and a folding mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0039] The paperboard automatic folding mechanism will be further described below in combination with the drawings and embodiments:

[0040] Figure 1 The paperboard automatic folding mechanism comprises a positioning mechanism, a side ear folding assembly, a first side plate folding assembly, a second side plate folding assembly, a clamping part, a bearing platform and a folding mechanism.

[0041] Figure 2 The paperboard automatic folding mechanism comprises a positioning mechanism, a side ear folding assembly, a first side plate folding assembly, a second side plate folding assembly, a clamping part, a bearing platform and a folding mechanism.

[0042] Figure 3Structure schematic diagram of folding mechanism in the paperboard automatic folding mechanism of the embodiment;

[0043] Figure 4 Structure schematic diagram of the paperboard automatic folding mechanism after folding paperboard of the embodiment;

[0044] Figure 5 Installation position schematic diagram of the first positioning needle in the paperboard automatic folding mechanism of the embodiment;

[0045] Figure 6 Structure schematic diagram of the paperboard automatic clamping device of the embodiment;

[0046] Figure 7 Partial structure schematic diagram of the feeding mechanism in the paperboard automatic clamping device of the embodiment;

[0047] Figure 8 Structure schematic diagram of the material taking assembly and partial clamping mechanism in the paperboard automatic clamping device of the embodiment;

[0048] Figure 9 For Figure 6 Enlarged structure schematic diagram of C in the middle.

[0049] Wherein: 10, paperboard, 11, bottom plate, 12, first side plate, 13, second side plate, 14, first side lug A, 15, first side lug B, 16, second side lug A, 17, second side lug B, 18, ground box;

[0050] 20, positioning mechanism, 21, bearing platform, 22, second suction cup, 23, first side plate forming plate, 24, second side plate forming plate, 25, flange type linear bearing, 26, guide rod, 27, first positioning plate, 28, second positioning plate, 29, first air cylinder, 210, third positioning plate, 211, fourth positioning plate, 212, second air cylinder;

[0051] 30, folding mechanism, 31, manipulator, 32, forming die, 33, third air cylinder, 34, first positioning needle, 35, abutting section, 36, clamping jaw air cylinder, 37, mounting plate;

[0052] 40, feeding mechanism, 41, storage bin, 42, material plate, 43, first brush, 44, linear guide rail assembly, 45, second brush, 46, first linear module;

[0053] 50, material taking mechanism, 51, third suction cup, 52, fourth air cylinder, 53, second linear module;

[0054] 60, clamping mechanism, 61, guide rail, 62, stop block, 63, fifth air cylinder, 64, fixed plate, 65, push plate, 66, sixth air cylinder. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to specific embodiments:

[0056] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0057] like Figure 4 As shown, the automatic cardboard folding mechanism is used to fold the cardboard 10, which is initially in a flat shape, from... Figure 1 The (a) state folds into Figure 1 The state of (d). For example... Figure 1 As shown, the cardboard 10, which is initially flat, includes a base plate 11, a first side plate 12 and a second side plate 13 disposed on both sides of the base plate 11 along a first direction. The first side plate 12 extends to both sides along a second direction with a first side lug A14 and a first side lug B15. The second side plate 13 extends to both sides along a second direction with a second side lug A16 and a second side lug B17. The second direction is perpendicular to the first direction. In this embodiment, the first direction is the width direction of the cardboard 10 and the second direction is the length direction of the cardboard 10. Creases are provided at all folding points of the cardboard 10.

[0058] The automatic cardboard folding mechanism includes a positioning mechanism 20 and a folding mechanism 30. The positioning mechanism 20 is used to position the conveyed cardboard 10 and works with the folding mechanism 30 to complete the folding of the cardboard 10; for example... Figure 2As shown, the positioning mechanism 20 comprises a load platform 21 for placing the paperboard 10 and elastically descending, a circumferential positioning assembly arranged around the load platform 21, a side plate forming assembly arranged on both sides of the load platform 21; the load platform 21 is provided with a second suction assembly, which is used for suction fixing the paperboard 10 placed on the load platform 21, and in the embodiment, the second suction assembly is a second suction disc 22. When the paperboard 10 is positioned by the positioning mechanism 20, the length of the load platform 21 placed at the first side plate 12 is less than or equal to the length of the first side plate 12, and the length of the load platform 21 placed at the second side plate 13 is less than or equal to the length of the second side plate 13; one load platform 21 is installed on a plurality of elastic guide reset assemblies; through the arrangement, when the positioning needle is folded to the side ear, the load platform 21 will not cause interference; the load platform 21 is installed on a plurality of elastic guide reset assemblies; the circumferential positioning assembly comprises a first positioning module arranged in a first direction and a second positioning module arranged in a second direction; the side plate forming assembly comprises a pair of first side plate forming plates 23 and a second side plate forming plate 24 arranged vertically and spaced apart, as shown in Figure 2 As shown, the first side plate forming plate 23 is arranged on the left side of the load platform, and the second side plate forming plate 24 is arranged on the right side of the load platform, and the distance between them corresponds to the size of the bottom plate 11 in the width direction H (as shown in Figure 4 As shown, the first side plate forming plate 23 is arranged on the left side of the load platform, and the second side plate forming plate 24 is arranged on the right side of the load platform, and the distance between them corresponds to the size of the bottom plate 11 in the width direction H (as shown in Figure 2 As shown, the first side plate forming plate 23 is arranged on the left side of the load platform, and the second side plate forming plate 24 is arranged on the right side of the load platform, and the distance between them corresponds to the size of the bottom plate 11 in the width direction H (as shown in

[0059] Each elastic guiding and resetting assembly includes a fixed flange type linear bearing 25 and a guiding rod 26 passing through the flange type linear bearing 25; the top end of the guiding rod 26 is fixed on the bearing platform 21, and the outer periphery of the guiding rod 26 is sleeved with a helical spring (not shown in the figure) between the flange end surface of the flange type linear bearing 25 and the bearing platform 21, for supporting the bearing platform 21; the bottom end of the guiding rod 26 is sleeved with a baffle to form mechanical limiting of the maximum lifting stroke of the guiding rod 26; in the embodiment, when the shaped die 32 presses down the paperboard 10 on the bearing platform 21, the bearing platform 21 is lowered by a certain displacement, and the first side plate forming plate 23 and the second side plate forming plate 24 respectively give the first side plate 12 and the second side plate 13 an upward thrust, so as to complete the folding of the first side plate 12 and the second side plate 13; in the embodiment, the folding and forming of the first side plate 12 and the second side plate 13 by the first side plate forming plate 23 and the second side plate forming plate 24 are completed through the lowering of the bearing platform 21, and the driving member for lifting the first side plate forming plate 23 and the second side plate forming plate 24 is omitted, so that the structure is simple and practical.

[0060] As shown in Figure 2 , the first positioning module includes first positioning plates 27 and second positioning plates 28 respectively arranged on both sides of the bearing platform 21, and a third driving member for driving the second positioning plates 28 to approach or move away from the first positioning plates 27, and in the embodiment, the third driving member is a first air cylinder 29; the second positioning module includes third positioning plates 210 and fourth positioning plates 211 respectively arranged on both sides of the bearing platform 21, and a fourth driving member for driving the fourth positioning plates 211 to approach or move away from the third positioning plates 210, and in the embodiment, the fourth driving member is a second air cylinder 212; in the embodiment, the first positioning plates 27 and the second positioning plates 28 push and squeeze the two side edges of the bottom plate 11 in the length direction, and the third positioning plates 210 and the fourth positioning plates 211 push and squeeze the outer edges of the first side plate 12 and the second side plate 13, so as to realize the positioning of the paperboard 10 and facilitate the alignment and folding of the later folding mechanism 30.

[0061] As shown in Figure 3As shown, the folding mechanism 30 is driven by the first driving member to move as a whole. The first driving member drives the folding mechanism 30 to rise and fall and to move the folding mechanism 30 from the positioning mechanism 20 to the top of the ground box 18 at the fixed module (in this embodiment, the ground box 18 is a box with an open top in the top and bottom box). The first driving member is the robot arm 31, and the folding mechanism 30 is installed at the end of the arm of the robot arm 31. The folding mechanism 30 includes: a liftable forming mold 32 for fixing the base plate 11 and cooperating to complete the forming of the cardboard 10. In this embodiment, the forming mold 32 is a cuboid box. The forming mold 32 is driven to rise and fall by a second driving member, which is mounted on the mounting plate 37. In this embodiment, the second driving member is a third cylinder 33. A side ear folding assembly is set on the side of the forming mold 32 corresponding to the position of the side ear, for bending and forming the first side ear A14, the first side ear B15, the second side ear A16, and the second side ear B17. The side ear folding assembly consists of four positioning pins fixed on the mounting plate 37, with the axis of each positioning pin set vertically. When the forming mold 32 is at its highest point of travel, the tips of the four positioning pins are lower than the bottom surface of the forming mold 32. In this embodiment, the forming... When the mold 32 is at its highest point of stroke, i.e., when the piston rod of the third cylinder 33 is retracted, the position of the forming mold 32 is as follows: In this embodiment, the positioning pins are all multi-segment positioning pins with different diameters; the installation position of each positioning pin on the mounting plate 37 is as follows: when the positioning mechanism 20 completes the positioning of the cardboard 10, and the robot arm 31 drives the entire folding mechanism 30 to be directly above the cardboard, the positioning pin is located above the side ear. Taking the first side ear A14 and the corresponding first positioning pin 34 as an example, the pin segment of the first positioning pin 34 that contacts the first side ear A14 (this contact refers to the contact between the first side ear A14 and the circumferential surface of the first positioning pin 34 when the first side plate 12 is flipped) is defined as the abutment segment 35. The circumferential edge of the abutment segment 35 is located directly above the crease between the first side ear A14 and the first side plate 12 (e.g., Figure 5 As shown), this ensures that the abutting section 35 of the first positioning pin 34 remains in contact with the surface of the first side ear A14 as the first side plate 12 rotates, keeping the first side ear A14 at a 90° angle to the first side plate 12 until the formed cardboard 10 is inserted into the base box 18; the clamping drive assembly has a clamping part that performs opening and closing movements, clamping the formed first side plate 12 and second side plate 13 onto the forming mold 32. The clamping drive assembly is a gripper cylinder 36, and the clamping part is a gripper. A first adsorption assembly is installed on the forming mold 32, which adsorbs and fixes the cardboard 10 attached to the bottom surface of the forming mold 32. In this embodiment, the first adsorption assembly is a first suction cup.

[0062] The working principle of the paperboard automatic folding mechanism in the utility model is as follows: in the initial state, the piston rods of the first cylinder 29 and the second cylinder 212 in the positioning mechanism 20 are retracted; the piston rod of the third cylinder 33 of the folding mechanism 30 is retracted; the flat plate-shaped paperboard 10 sucked by the taking mechanism 50 is placed on the bearing platform 21;

[0063] After starting the action, the piston rods of the first cylinder 29 and the second cylinder 212 of the positioning mechanism 20 are extended, the first cylinder 29 drives the second positioning plate 28 to be close to the first positioning plate 27, the second cylinder 212 drives the fourth positioning plate 211 to be close to the third positioning plate 210, the periphery of the paperboard 10 is pushed and extruded, and the positioning of the paperboard 10 on the bearing platform 21 is completed; the second suction cup 22 fixes the paperboard 10 after positioning, and then the piston rods of the first cylinder 29 and the second cylinder 212 are retracted; the folding mechanism 30 is integrally moved to the top of the paperboard 10 fixed on the bearing platform 21 by the mechanical hand 31, the mechanical hand 31 drives the folding mechanism 30 to move downwards, since the needle tips of the four positioning needles are lower than the bottom surface of the forming die 32, the four positioning needles contact the paperboard 10 first, the four positioning needles press down the first side ear A 14, the first side ear B 15, the second side ear A 16 and the second side ear B 17 respectively, so that the first side ear A 14, the first side ear B 15, the second side ear A 16 and the second side ear B 17 are bent downwards by 90° respectively, as shown in (b) of FIG. Figure 1 Then the folding mechanism continues to descend to a certain distance, the four positioning needles continue to descend, the forming die 32 presses down the bottom plate 11 of the paperboard 10, the bottom plate 11 and the bearing platform 21 move downwards under the pressing of the forming die 32, at the same time, the first side plate forming plate 23 and the second side plate forming plate 24 give the first side plate 12 and the second side plate 13 an upward thrust respectively, so that the first side plate 12 and the second side plate 13 are folded upwards by 90°, at the same time, the first side ear A 14, the first side ear B 15, the second side ear A 16 and the second side ear B 17 are always kept bent by 90° relative to the first side plate 12 and the second side plate 13 under the abutting of the circumferential surface of the abutting section 35 of the ejector pin; Figure 1 (c) is a state diagram of the paperboard 10 being folded in the process of the forming die 32 descending; after the forming die 32 stops descending, the clamping jaw cylinder 36 acts to clamp the first side plate 12 and the second side plate 13, at this time, as shown in (c) of FIG. Figure 4 Figure 1 (d) is a state after the paperboard 10 is folded and formed; then the second suction cup 22 on the bearing platform 21 releases the paperboard 10, and the first suction cup on the forming die 32 sucks the paperboard 10; after the folding mechanism 30 integrally rises and moves to the top of the ground box 18 of the fixing module by the driving of the mechanical hand 31, the bearing platform 21 rises back to the initial state under the action of the elastic guiding reset assembly.

[0064] ​The utility model discloses still provide a kind of paperboard automatic clamping device, as shown in Figure 6 It includes: paperboard automatic folding mechanism, feeding mechanism 40, material taking mechanism 50, clamping mechanism 60.

[0065] As shown in Figure 7 Feeding mechanism 40 is used to realize the uninterrupted feeding of flat paperboard 10;It includes at least one group of jacking feeding assembly in storage bin 41, in the embodiment, the feeding assembly is provided as two groups, when one group of feeding assembly feeds, the other feeding assembly can be loaded, to realize uninterrupted feeding;The feeding assembly includes material plate 42, sixth driving part for driving material plate 42 to lift, in the embodiment, the sixth driving part is a linear reducer motor;Paperboard 10 is stacked in the position of storage bin 41 as shown in Figure 1 Feeding mechanism 40 also includes layered anti-interference assembly, which is used to realize the non-interference between the paperboard taken by material taking mechanism 50 and another paperboard below the paperboard, and the layered anti-interference assembly includes first brush module and second brush module which can adjust the position on both sides of the material taking station of paperboard stack;The first brush module includes first brush 43 and linear guide rail assembly 44 for mounting first brush 43, and the slider of linear guide rail assembly 44 is mounted on the first brush 43, and the guide rail of linear guide rail assembly 44 is mounted on the rack;The second brush module includes second brush 45 and tenth driving part for driving second brush 45 away from or close to first brush 43, and in the embodiment, the tenth driving part is first linear module 46.The distance between first brush 43 and second brush 45 in the first brush module and the second brush module can be adjusted to adapt to other types of paperboard 10, and the feeding mechanism 40 can also adapt to other types of paperboard 10.Because paperboard 10 is relatively light, when the material taking assembly sucks the top paperboard 10 in the material stack, the paperboard 10 and the paperboard 10 below it are easily sucked together, and the first brush module and the second brush module are set to brush downward on both sides of the length direction of the sucked paperboard 10, to avoid the case of sucking two paperboards 10 at a time.

[0066] As shown in Figure 8 Material taking mechanism 50 takes and places paperboard 10 in feeding mechanism 40 to positioning mechanism 20, and includes negative pressure suction assembly and fifth driving part for driving negative pressure suction assembly to move back and forth;The negative pressure suction assembly is negative pressure suction disc assembly, and the fifth driving part is second linear module 53;The negative pressure suction disc assembly includes suction disc and seventh driving part for driving suction disc to lift, and the seventh driving part is installed on the moving part of second linear module 53, and in the embodiment, the suction disc in the negative pressure suction disc assembly is third suction disc 51, and the seventh driving part is fourth air cylinder 52.

[0067] As shown in Figure 8 , Figure 9As shown, the clamping mechanism 60 comprises a conveying assembly conveying the box 18 continuously, a guide limiting assembly guiding the conveying of the box 18 above the conveying assembly, and a positioning clamping assembly arranged on the guide limiting assembly to clamp and fix the box 18 conveyed to a certain position. In the embodiment, the conveying assembly is a belt conveying line, which is not shown in the figure. The guide limiting assembly comprises a pair of parallel guide rails 61, and the positioning clamping assembly comprises a clamping module and a fixing module. The clamping module comprises a pair of clamping modules arranged on the pair of guide rails 61 respectively, each clamping module comprising a block 62 and an eighth driving member driving the block 62 to reciprocate vertically to the conveying direction of the conveying assembly, and in the embodiment, the eighth driving member is a fifth cylinder 63. The fixing module comprises a fixing plate 64 fixed on one guide rail 61 and a push plate module arranged on the other guide rail 61, the push plate module comprising a push plate 65 and a ninth driving member driving the push plate 65 to approach or move away from the fixing plate 64, and in the embodiment, the ninth driving member is a sixth cylinder 66.

[0068] The working principle of the paperboard automatic clamping device in the utility model is as follows: the linear reduction motor of the feeding assembly drives the material plate 42 to rise, and drives the topmost paperboard 10 on the paperboard stack to the material taking position; the second linear module 53 drives the negative pressure suction assembly to move to the position directly above the material taking position, the piston rod of the fourth cylinder 52 is extended to drive the third suction disc 51 to move downward to suck the paperboard 10, then the piston rod of the fourth cylinder 52 is retracted to drive the paperboard 10 to rise, and the first brush 43 and the second brush 45 brush the length direction of the rising paperboard 10; the linear reduction motor drives the next paperboard 10 to rise to the material taking position, and waits for the next cycle of the material taking assembly to suck; the second linear module 53 drives the paperboard 10 to move to the position directly above the positioning mechanism 20, the piston rod of the fourth cylinder 52 is extended to drive the paperboard 10 to move downward, then the third suction disc 51 releases the paperboard 10, and the paperboard 10 is placed on the bearing platform 21;

[0069] The paperboard automatic folding mechanism completes the positioning and folding forming of the paperboard 10 on the bearing platform 21, and the specific working principle of the paperboard automatic folding mechanism has been described above, which will not be repeated here; The belt conveying line continuously conveys a plurality of ground boxes 18 without stopping, and the sensor detects that the ground box 18 of the paperboard 10 folded and formed in the last cycle is completely conveyed away, then a pair of fifth cylinders 63 of the clamping module simultaneously drive the stop block 62 to extend, and the next ground box 18 is clamped and stopped, then the sixth cylinder 66 of the push plate module of the fixing module drives the push plate 65 to approach the fixed plate 64, and the ground box 18 at the clamping module is fixed; The manipulator 31 drives the folding mechanism 30 to move to the ground box 18 above the fixing module, and then drives the folding mechanism 30 to descend to a predetermined position; The clamping jaw of the clamping jaw cylinder 36 is opened, and the first side plate 12 and the second side plate 13 are loosened; The piston rod of the third cylinder 33 extends, drives the paperboard 10 to move downward, and clamps the formed paperboard 10 into the ground box 18, the piston rod of the third cylinder 33 retracts, and the manipulator 31 drives the folding mechanism 30 to ascend, then the manipulator 31 moves the folding mechanism 30 to the positioning mechanism 20 above, and enters the next cycle; A pair of fifth cylinders 63 and sixth cylinders 66 are retracted and reset at the same time, and the paper box clamping the paperboard 10 is loosened, and the paper box continues to be conveyed forward.

[0070] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. An automatic cardboard folding mechanism for folding a flat cardboard into a predetermined shape, the flat cardboard comprising a base plate, a first side plate and a second side plate disposed on both sides of the base plate along a first direction, the first side plate having a first side lug A and a first side lug B extending to both sides along a second direction, the second side plate having a second side lug A and a second side lug B extending to both sides along a second direction, the second direction being perpendicular to the first direction; creases are provided at all folding points of the cardboard; characterized in that... include: A positioning mechanism is used to position the conveyed cardboard and cooperate with a folding mechanism to fold the cardboard; the positioning mechanism includes a support platform for placing the cardboard and which can be elastically lowered, a circumferential positioning component arranged around the support platform, and side plate forming components respectively arranged on both sides of the support platform. The folding mechanism, driven by a first driving member for overall movement, includes: The adjustable forming mold is used to fix the base plate and cooperate in completing the cardboard forming process; The side ear folding assembly is set on the side of the forming mold at the position corresponding to the side ear, and is used to bend and form the first side ear A, the first side ear B, the second side ear A, and the second side ear B. The clamping drive assembly has a clamping part that performs an opening and closing motion to clamp the first and second side plates being formed onto the forming mold.

2. The automatic cardboard folding mechanism according to claim 1, characterized in that: When the cardboard is placed on the carrying platform and positioned by the positioning mechanism, the length of the carrying platform at the location where the first side plate is placed must be less than or equal to the length of the first side plate, and the length of the carrying platform at the location where the second side plate is placed must be less than or equal to the length of the second side plate. One of the aforementioned support platforms is mounted on multiple sets of elastic guide and reset assemblies; The circumferential positioning component includes a first positioning module arranged along a first direction and a second positioning module arranged along a second direction; The side plate forming assembly includes a pair of vertically fixed first side plate forming plates and a second side plate forming plate, which are spaced apart from each other, with the distance between them corresponding to the width dimension of the base plate; when the bearing platform is at its highest point of travel, the apexes of the first side plate forming plate and the second side plate forming plate are both lower than the top surface of the bearing platform.

3. The automatic cardboard folding mechanism according to claim 1, characterized in that: The molding die is lifted and lowered by a second driving component, which is mounted on a mounting plate. The side ear folding assembly consists of four positioning pins fixed to the mounting plate, with the axis of each positioning pin set vertically. When the molding die is at its highest point of travel, the tips of the four positioning pins are lower than the bottom surface of the molding die. The clamping drive assembly is a gripper cylinder, and the clamping part is a gripper.

4. The automatic cardboard folding mechanism according to claim 2, characterized in that: Each set of the elastic guide reset assembly includes a fixed flange-type linear bearing and a guide rod passing through the flange-type linear bearing; the top end of the guide rod is fixed to the bearing platform, and a helical spring is sleeved on the outer periphery of the guide rod between the flange end face of the flange-type linear bearing and the bearing platform to support the bearing platform; a baffle is sleeved on the bottom end of the guide rod to form a mechanical limit for the maximum upward stroke of the guide rod. The first positioning module includes a first positioning plate and a second positioning plate respectively disposed on both sides of the bearing platform, and a third driving member for driving the second positioning plate to move closer to or away from the first positioning plate; the second positioning module includes a third positioning plate and a fourth positioning plate respectively disposed on both sides of the bearing platform, and a fourth driving member for driving the fourth positioning plate to move closer to or away from the third positioning plate. The molding die is equipped with a first adsorption component, which adsorbs and fixes the cardboard attached to the bottom surface of the molding die. The carrier platform is equipped with a second adsorption component, which adsorbs and fixes the cardboard placed on the carrier platform.

5. An automatic cardboard clamping device, characterized in that, include: The automatic cardboard folding mechanism according to any one of claims 1-4; A feeding mechanism for continuously feeding sheet-shaped cardboard; including a storage bin and at least one set of lifting feeding components located in the storage bin; The material handling mechanism picks up and places the cardboard from the feeding mechanism onto the positioning mechanism, and includes a negative pressure suction component and a fifth driving component that drives the negative pressure suction component to reciprocate. The clamping mechanism includes a conveying component for continuously conveying ground boxes, a guide limiting component located above the conveying component to guide the conveying of ground boxes, and a positioning and clamping component set on the guide limiting component to clamp and fix the ground boxes conveyed to a predetermined position.

6. The automatic cardboard clamping device according to claim 5, characterized in that: The feeding mechanism also includes a layered anti-interference component, which is used to ensure that the feeding mechanism does not interfere with another piece of paperboard below the paperboard when it picks up the paperboard. The layered anti-interference component includes a first brush module and a second brush module located on both sides of the feeding station of the paperboard stack, which are adjustable in position. The negative pressure suction component is a negative pressure suction cup component, and the fifth driving component is a linear module; The guide limiting component includes a pair of parallel guide rails, and the positioning and clamping component includes a clamping module and a fixing module.

7. The automatic cardboard clamping device according to claim 6, characterized in that: The feeding assembly includes a material plate and a sixth driving component that drives the material plate to rise and fall. The negative pressure suction cup assembly includes a suction cup and a seventh driving component for driving the suction cup to rise and fall. The seventh driving component is installed on the moving part of the linear module.

8. The automatic cardboard clamping device according to claim 6, characterized in that: The blocking module includes a pair of blocking modules respectively disposed on a pair of guide rails. Each blocking module includes a block and an eighth driving component that drives the block to reciprocate along a conveying direction perpendicular to the conveying component. The fixed module includes a fixed plate fixed on one guide rail and a push plate module installed on another guide rail. The push plate module includes a push plate and a ninth driving component that drives the push plate to move closer to or away from the fixed plate.

9. The automatic cardboard clamping device according to claim 6, characterized in that: The first brush module includes a first brush and a linear guide rail assembly for mounting the first brush. The first brush is mounted on a slider of the linear guide rail assembly, and the guide rail of the linear guide rail assembly is mounted on a frame. The second brush module includes a second brush and a tenth drive unit that drives the second brush away from or towards the first brush.

10. The automatic cardboard clamping device according to claim 5, characterized in that: The first driving component drives the folding mechanism to rise and fall and moves the folding mechanism from the positioning mechanism to directly above the ground box at the fixed module.

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