Full-automatic folding and forming device for packaging box

Abstract

The utility model belongs to the production technical field of packing box, especially a packing box full -automatic folding forming device, including base and fixedly connected in the top of base's placing frame, the placing frame and base between activity place have the forming box that opening packing box forms uses, be provided with lifting mechanism in the forming box, be provided with the clamping centering mechanism between the forming box and base, one side fixed connection of placing frame has mount rack, the utility model discloses structure design is reasonable, four -way synchronous formula's clamping centering mechanism cooperation pressure sensing's control, make to the positioning of forming box more precision, make it and folding board upper and lower alignment, improve the quality of packing box after folding, through the dismounting replacement mechanism benefit and good different specifications's forming box are folded folding board and carry out convenient efficient replacement, greatly improve the versatility of device practicality, and the height of push board is adjustable, not only provide suitable height for folding action, simultaneously assist finished product ejection.

Description

Technical Field

[0001] This utility model relates to the field of packaging box production technology, and in particular to a fully automatic folding and forming device for packaging boxes. Background Technology

[0002] Packaging boxes are a common product packaging tool, and various types of packaging boxes can be seen everywhere in daily life. In the process of processing packaging boxes, it is often necessary to fold and shape the boxes.

[0003] Existing packaging box folding and forming devices have the following prominent problems: the connection between the folding plate and the drive component, as well as the connection between the forming box and the base, are mostly fixed, which are only suitable for packaging boxes of a single specification. When changing to different sized molds, multiple bolts need to be disassembled with tools, resulting in long mold change times. This cannot meet the needs of multi-specification production. Furthermore, when the ejection mechanism pushes out the formed carton, manual intervention is required to remove and unload the carton, reducing production efficiency. This is far from being suitable for the pace of large-scale industrial production. Therefore, we propose a fully automatic packaging box folding and forming device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned shortcomings and to propose a fully automatic folding and forming device for packaging boxes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic folding and forming device for packaging boxes includes a base and a placement frame fixedly connected to the top of the base. A forming box for forming open packaging boxes is movably placed between the placement frame and the base. A lifting mechanism is provided inside the forming box. A clamping and centering mechanism is provided between the forming box and the base. A mounting frame is fixedly connected to one side of the placement frame. A PLC controller is fixedly connected to one side of the mounting frame. A cylinder is fixedly connected to the top of the mounting frame. A connecting seat is fixedly connected to the output shaft of the cylinder. A folding plate is provided at the bottom of the connecting seat. A disassembly and replacement mechanism is provided between the folding plate and the connecting seat.

[0006] Preferably, the clamping and centering mechanism includes four lead screws and a servo motor fixedly connected to one side of the base, and an active bevel gear rotatably connected to the inner wall of the bottom of the base. The four lead screws are rotatably connected to the four sides of the inner wall of the base, and the output shaft of the servo motor is fixedly connected to one end of the corresponding lead screw. The ends of the four lead screws that are close to each other are fixedly connected to driven bevel gears. The active bevel gears mesh with the four driven bevel gears. A clamping plate is threaded on the outer side of the lead screw, and a pressure sensor is fixedly connected to the inner side of the clamping plate. The four pressure sensors are movably abutting against the four sides of the outer side of the base.

[0007] Preferably, the top of the base has four rectangular openings, and four clamping plates are slidably fitted into the corresponding rectangular openings. The rectangular openings and clamping plates are fixedly connected by the same elastic rubber strip.

[0008] Preferably, the disassembly and replacement mechanism includes a threaded cylinder rotatably connected to the inner wall of the connecting seat, and a rotating shaft rotatably connected to the top of the connecting seat. Both the rotating shaft and the outer side of the threaded cylinder are fixedly fitted with bevel gears, which mesh with each other. The threaded cylinder is threaded with two upper screws, and the outer sides of the two upper screws are provided with external threads in opposite directions. The ends of the two upper screws that are far apart from each other are fixedly connected with locking blocks. The top of the folding plate is fixedly connected with an installation frame. Both sides of the installation frame can be provided with locking interfaces. The two locking blocks are respectively movably locked into the corresponding locking interfaces. The connecting seat is slidably fitted into the installation frame.

[0009] Preferably, a handwheel is fixedly connected to the top of the rotating shaft, a screw is threadedly connected to the top of the handwheel, and a threaded groove is provided on the top of the connecting seat, with the screw threadedly connected in the threaded groove.

[0010] Preferably, a bearing seat is fixedly sleeved inside the connecting seat, the threaded cylinder is rotatably connected to the inside of the bearing seat through the bearing, and both locking blocks are slidably connected inside the connecting seat.

[0011] Preferably, the lifting mechanism includes a second cylinder fixedly connected to the inner wall of the bottom of the molding box, a push plate fixedly connected to the output shaft of the second cylinder, and two telescopic rods fixedly connected between the push plate and the inner wall of the bottom of the molding box.

[0012] Preferably, a cylinder three is fixedly connected to one side of the mounting bracket, and a feed plate is fixedly connected to the output shaft of the cylinder three.

[0013] In this utility model, a fully automatic folding and forming device for packaging boxes is described. Different sizes of forming boxes are placed in a placement frame, with the bottom abutting against the top of the base. The PLC controller starts the servo motor, and one lower lead screw rotates, driving four driven bevel gears to rotate synchronously through the active bevel gear. The four lower lead screws drive the clamping plates to move synchronously towards the center. When the pressure sensor detects that the clamping force reaches the preset value, the servo motor stops, thereby pushing the forming box from all sides towards the center and clamping it firmly. This facilitates the disassembly and replacement of forming boxes of different sizes, improving the versatility of the device. In this utility model, a fully automatic folding and forming device for packaging boxes is described. When replacing the corresponding folding plate according to different sizes of forming boxes, the screw is unscrewed, the handwheel is turned to drive the rotating shaft to rotate, and the threaded cylinder is driven to rotate through the bevel gear. The two upper screws are brought closer together under the action of the reverse thread, the locking block disengages from the locking interface, the old folding plate is taken out downwards, the mounting frame with the new folding plate is inserted into the connecting seat, the handwheel is turned in the reverse direction to make the locking block lock into the locking interface, the screw is tightened to lock the handwheel, and the replacement is completed. The whole process does not require professional tools, making the replacement more convenient and efficient. The PLC controller controls the extension of the second cylinder, which in turn drives the lifting and lowering of the push plate to adjust the effective folding depth of the forming box. It can be adjusted according to the height of the packaging box to improve the versatility of the device. After the folding action is completed, the second cylinder continues to extend to push the finished product to the material picking position. After the material is unloaded, the second cylinder resets and waits for the next work cycle. This utility model has a reasonable structural design. The four-way synchronous clamping and centering mechanism, combined with the control of pressure sensors, makes the positioning of the forming box more accurate, aligning it with the folding plate and improving the quality of the folded packaging box. The disassembly and replacement mechanism facilitates the convenient and efficient replacement of the folding plate with different sizes of forming boxes, greatly improving the versatility and practicality of the device. In addition, the height of the push plate is adjustable, which not only provides a suitable height for the folding action, but also assists in the ejection of the finished product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a fully automatic folding and forming device for packaging boxes proposed in this utility model; Figure 2 This is a cross-sectional view of the base and placement frame of a fully automatic folding and forming device for packaging boxes proposed in this utility model; Figure 3 for Figure 2 A schematic diagram of the structure of part A; Figure 4 This is a cross-sectional view of the disassembly and replacement mechanism of a fully automatic folding and forming device for packaging boxes proposed in this utility model.

[0015] In the diagram: 1. Base; 2. Placement frame; 3. Mounting bracket; 4. PLC controller; 5. Clamping and centering mechanism; 51. Servo motor; 52. Lower lead screw; 53. Clamping plate; 54. Rectangular opening; 55. Elastic rubber strip; 56. Pressure sensor; 57. Driven bevel gear; 58. Driven bevel gear; 6. Molding box; 7. Lifting mechanism; 71. Cylinder II; 72. Push plate; 73. Telescopic rod; 8. Folding plate; 9. Disassembly and replacement mechanism; 90. Screw; 91. Mounting frame; 92. Clip interface; 93. Bearing seat; 94. Threaded cylinder; 95. Upper lead screw; 96. Clamping block; 97. Bevel gear; 98. Rotating shaft; 99. Handwheel; 10. Cylinder I; 11. Connecting seat; 12. Cylinder III; 13. Unloading plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figures 1-4 An automatic folding and forming device for packaging boxes includes a cast iron base 1; an aluminum alloy placement frame 2 is fixedly connected to the top of the base via a bracket; a stainless steel forming box 6 (with polished inner wall) is movably placed between the placement frame 2 and the base 1; a lifting mechanism 7 is provided inside the forming box 6 to realize cardboard lifting and finished product ejection; a clamping and centering mechanism 5 is provided between the forming box 6 and the base 1 to achieve precise positioning of the forming box 6 and align it with the folding plate 8; a carbon steel mounting frame 3 with powder-coated rust prevention is fixedly connected to the right side of the placement frame 2; a PLC controller 4 (model S7-200SMART, equipped with a touch screen and buttons) is fixedly connected to the right side of the mounting frame 3; the mounting frame A cylinder 10 (model SC100×200, working pressure 0.4-0.8MPa) is fixedly connected to the top of the mounting bracket 3; an aluminum alloy connecting seat 11 is fixedly connected to the end of the output shaft of the cylinder 10; a customized folding plate 8 is provided at the bottom of the connecting seat 11, designed according to the size of the packaging box, and made of 6061 aluminum alloy; a disassembly and replacement mechanism 9 is provided between the folding plate 8 and the connecting seat 11 to realize quick replacement of the folding plate 8; a cylinder 12 (model SC80×300, working pressure 0.4-0.8MPa) is fixedly connected to the right side of the mounting bracket 3; a nylon feeding plate 13 is welded and fixedly connected to the end of the output shaft of the cylinder 12, with anti-slip rubber on the surface to avoid scratching the finished product.

[0018] Specifically, the clamping and centering mechanism 5 adopts a bevel gear linkage and lead screw transmission structure to achieve four-way synchronous clamping and centering of the forming box 6, ensuring consistent folding reference: The clamping and centering mechanism 5 includes a servo motor 51 (model 130ST-M06025, power 1.5kW, speed 0-3000rpm) fixedly connected to the left side of the base 1; a 45# steel driving bevel gear 58 is rotatably connected to the center of the bottom inner wall of the base 1 through a bearing; four 45# steel lower lead screws 52 are rotatably connected to the inner wall of the base 1 through bearings, arranged in a cross shape; the output shaft of the servo motor 51 is fixedly connected to one end of the corresponding lower lead screw through a coupling; driven bevel gears 57 are welded and fixedly connected to the ends of the four lower lead screws 52 that are close to each other; the driving bevel gear 58 meshes with the four driven bevel gears 57 to form a four-way synchronous transmission structure.

[0019] Specifically, an aluminum alloy clamping plate 53 is threaded onto the outer side of the lower lead screw 52; four rectangular openings 54 are provided on the top of the base 1; the four clamping plates 53 are slidably fitted into the corresponding rectangular openings 54; the rectangular openings 54 and the clamping plates 53 are bonded and fixedly connected by the same elastic rubber strip 55, which is resistant to aging and plays a role in dust prevention and buffering, so as to avoid affecting the normal operation of the lower lead screw 52; a pressure sensor 56 (model PT124G-111, range 0-100N, accuracy ±0.5N) is fixedly connected to the center of the inner side of the clamping plate 53, and the four pressure sensors 56 are respectively movably abutting against the outer periphery of the molding box 6.

[0020] Centering principle: Molding boxes 6 of different sizes are placed in the placement frame 2, with their bottoms abutting against the top of the base 1. The PLC controller 4 starts the servo motor 51, and one lead screw 52 rotates, driving four driven bevel gears 57 to rotate synchronously through the active bevel gear 58. The four lead screws 52 drive the clamping plates 53 to move synchronously toward the center. When the pressure sensor 56 detects that the clamping force reaches the preset value, the servo motor 51 stops, and the molding box 6 can be pushed from all sides toward the center and clamped and fixed firmly. This facilitates the disassembly and replacement of molding boxes 6 of different sizes, improving the versatility of the device.

[0021] Specifically, the disassembly and replacement mechanism 9 adopts a bevel gear transmission and locking structure to achieve quick replacement of the folding plate, adapting to the folding use of different specifications of packaging boxes: The disassembly and replacement mechanism 9 includes a threaded cylinder 94 of No. 45 steel rotatably connected to the inner wall of the connecting seat 11 via a bearing seat 93, with bidirectional threads machined on the inner wall; a stainless steel rotating shaft 98 is rotatably connected to the top of the connecting seat 11 via a bearing; bevel gears 97 are welded and fixedly sleeved on the outer sides of both the rotating shaft 98 and the threaded cylinder 94; the two bevel gears 97 mesh to form a vertical transmission; two stainless steel upper screws 95 are threaded on the inner thread of the threaded cylinder 94, and the outer side is provided with external threads with opposite directions; a locking block 96 (material Cr12, hardness HRC55, surface polished) is welded and fixedly connected to the two upper screws 95 at their far ends.

[0022] Specifically, a stainless steel mounting frame 91 is fixedly connected to the top of the folding plate 8. Both sides of the mounting frame 91 have locking interfaces 92 (matching the shape of the locking blocks 96, with a fit gap ≤0.1mm). Two locking blocks 96 are respectively movably engaged in their corresponding locking interfaces 92, thus fixing the folding plate 8 to the connecting seat 11. The connecting seat 11 is slidably fitted within the mounting frame 91, serving as a guide and positioning element. A rubber anti-slip handwheel 99 is welded and fixedly connected to the top of the rotating shaft 98. A screw 90 with a knob is threadedly connected to the top of the handwheel 99. A threaded groove is opened at the corresponding position on the top of the connecting seat 11, and the screw 90 is threadedly connected within the threaded groove, locking the handwheel 99 and preventing accidental rotation of the rotating shaft 98 during operation.

[0023] Replacement principle: When replacing the corresponding folding plate 8 according to the different sizes of the molding box 6, unscrew the screw 90, turn the handwheel 99 to drive the rotating shaft 98 to rotate, and drive the threaded cylinder 94 to rotate through the bevel gear 97. The two upper screws 95 move closer to each other under the action of the reverse thread, and the locking block 96 disengages from the locking interface 92. Take out the old folding plate 8 downwards, insert the mounting frame 91 with the new folding plate 8 into the connecting seat 11, turn the handwheel 99 in the opposite direction to make the locking block 96 lock into the locking interface 92, tighten the screw 90 to lock the handwheel 99, and the replacement is completed. The whole process does not require professional tools, making the replacement more convenient and efficient.

[0024] Specifically, the lifting mechanism 7 adopts a cylinder-driven and telescopic rod guide structure to achieve smooth lifting of the cardboard, providing a suitable height for folding, preventing folding into packaging boxes of different depths, and assisting in the ejection of finished products. It includes a second cylinder 71 (model SC125×300, working pressure 0.4-0.8MPa, with magnetic control switch and displacement sensor) fixedly connected to the center of the bottom inner wall of the forming box 6; a stainless steel push plate 72 (size matching the inner frame of the forming box 6, with silicone cushioning pad on the surface) is fixedly connected to the top of the output shaft of the second cylinder 71; two stainless steel telescopic rods 73 (model TGA-80, guide accuracy ≤0.2mm) are fixedly connected between the push plate 72 and the bottom inner wall of the forming box 6; the two telescopic rods 73 are symmetrically distributed on both sides of the second cylinder 71 to ensure that the push plate 72 does not tilt or deviate during the lifting process.

[0025] Working principle: PLC controller 4 controls cylinder 2 71 to extend, thereby driving the push plate 72 to rise and fall, so as to adjust the effective folding depth of the forming box 6. The height of the folding packaging box can be adjusted as needed to improve the versatility of the device. After the folding action is completed, cylinder 2 71 continues to extend to push the finished product to the material picking position. After the material is unloaded, cylinder 2 71 resets and waits for the next work cycle.

[0026] The workflow for forming a corrugated cardboard open packaging box: Based on the packaging box to be formed, the appropriate forming box 6 is replaced through the clamping and centering mechanism, and the appropriate folding plate 8 is replaced through the disassembly and replacement mechanism 9. The screw 90 on the handwheel 99 is tightened to lock it. The PLC controller 4 controls the cylinder 71 to extend, thereby driving the push plate 72 to rise and fall, so as to adjust the effective folding depth of the forming box 6. The PLC controller 4 presets each operating process and operating parameters. The cut corrugated cardboard is placed on the top of the placement frame 2 and the forming box 6, ensuring that the bottom plate of the packaging box is aligned with the forming box 6. The start button is pressed, and the PLC controls the cylinder 10 to extend, driving the connecting seat 11 and the folding plate 8 to move down until they are aligned. Until the top of the push plate 72 abuts, under the limitation of the four side walls of the forming box 6, the side panels of the packaging carton automatically abut parallel to the four side walls of the forming box 6, thus completing the folding and forming of the packaging carton. After forming, the reverse-start cylinder 10 causes the folding plate 8 to move upward and reset. Then, cylinder 2 71 is started, which drives the push plate 72 to move upward and push out the formed open packaging carton. At this time, the carton has been folded with fold lines, so that the side panels can be nailed together according to the fold lines later. The PLC controls the cylinder 3 12 to extend, and the unloading plate 13 pushes the finished product to the subsequent conveyor line to realize automatic unloading. Cylinder 3 12 and cylinder 2 71 reset in sequence, and the equipment waits for the next piece of cardboard to be loaded.

Claims

1. A fully automatic folding and forming device for packaging boxes, characterized in that, The system includes a base (1) and a placement frame (2) fixedly connected to the top of the base (1). A molding box (6) for forming open packaging boxes is movably placed between the placement frame (2) and the base (1). A lifting mechanism (7) is provided inside the molding box (6). A clamping and centering mechanism (5) is provided between the molding box (6) and the base (1). A mounting frame (3) is fixedly connected to one side of the placement frame (2). A PLC controller (4) is fixedly connected to one side of the mounting frame (3). A cylinder (10) is fixedly connected to the top of the mounting frame (3). A connecting seat (11) is fixedly connected to the output shaft of the cylinder (10). A folding plate (8) is provided at the bottom of the connecting seat (11). A disassembly and replacement mechanism (9) is provided between the folding plate (8) and the connecting seat (11).

2. The fully automatic folding and forming device for packaging boxes according to claim 1, characterized in that, The clamping and centering mechanism (5) includes four lower lead screws (52) and a servo motor (51) fixedly connected to one side of the base (1), and an active bevel gear (58) rotatably connected to the inner wall of the bottom of the base (1). The four lower lead screws (52) are rotatably connected to the inner wall of the base (1) respectively. The output shaft of the servo motor (51) is fixedly connected to one end of the corresponding lower lead screw (52). The ends of the four lower lead screws (52) that are close to each other are fixedly connected to driven bevel gears (57). The active bevel gear (58) meshes with the four driven bevel gears (57). The outer side of the lower lead screw (52) is threaded with a clamping plate (53). The inner side of the clamping plate (53) is fixedly connected to a pressure sensor (56). The four pressure sensors (56) are movably abutting against the outer periphery of the base (1) respectively.

3. The fully automatic folding and forming device for packaging boxes according to claim 2, characterized in that, The base (1) has four rectangular openings (54) on its top. Four clamping plates (53) are slidably fitted into the corresponding rectangular openings (54). The rectangular openings (54) and the clamping plates (53) are fixedly connected by the same elastic rubber strip (55).

4. The fully automatic folding and forming device for packaging boxes according to claim 1, characterized in that, The disassembly and replacement mechanism (9) includes a threaded cylinder (94) rotatably connected to the inner wall of the connecting seat (11) and a rotating shaft (98) rotatably connected to the top of the connecting seat (11). Both the rotating shaft (98) and the outer side of the threaded cylinder (94) are fixedly fitted with bevel gears (97). The two bevel gears (97) mesh with each other. The threaded cylinder (94) is threaded with two upper screws (95). The outer side of the two upper screws (95) is provided with external threads in opposite directions. The ends of the two upper screws (95) that are far apart from each other are fixedly connected with locking blocks (96). The top of the folding plate (8) is fixedly connected with an installation frame (91). Both sides of the installation frame (91) can be provided with locking interfaces (92). The two locking blocks (96) are respectively movably locked into the corresponding locking interfaces (92). The connecting seat (11) is slidably fitted into the installation frame (91).

5. The fully automatic folding and forming device for packaging boxes according to claim 4, characterized in that, A handwheel (99) is fixedly connected to the top of the rotating shaft (98), and a screw (90) is threadedly connected to the top of the handwheel (99). A threaded groove is provided on the top of the connecting seat (11), and the screw (90) is threadedly connected in the threaded groove.

6. The fully automatic folding and forming device for packaging boxes according to claim 4, characterized in that, The connecting seat (11) is fixedly fitted with a bearing seat (93), and the threaded cylinder (94) is rotatably connected to the inside of the bearing seat (93) through the bearing. Both locking blocks (96) are slidably connected inside the connecting seat (11).

7. The fully automatic folding and forming device for packaging boxes according to claim 1, characterized in that, The lifting mechanism (7) includes a second cylinder (71) fixedly connected to the inner wall of the bottom of the molding box (6). A push plate (72) is fixedly connected to the output shaft of the second cylinder (71). Two telescopic rods (73) are fixedly connected between the push plate (72) and the inner wall of the bottom of the molding box (6).

8. The fully automatic folding and forming device for packaging boxes according to claim 1, characterized in that, A cylinder three (12) is fixedly connected to one side of the mounting bracket (3), and a feed plate (13) is fixedly connected to the output shaft of the cylinder three (12).

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