A carton forming process and carton production line

Abstract

The application relates to the paper box forming technical field, in particular to a paper box forming process and a paper box production line, which comprise a forming device, a lower pressing device for pressing paper boards and a sliding device for moving the lower pressing device, both sides of the forming device are provided with conveying belts for moving in the paper boards and moving out the formed paper boxes respectively, and the lower pressing device drives the paper boards to be extruded into the forming device to form complete paper boxes. In the application, the lower pressing plate in the lower pressing device moves downward, the stop block moves downward, the auxiliary pressing part moves outward, abuts against the first folding edge, prevents the second folding edge from being folded along the first folding line, causes folding error, when the lower pressing plate moves downward again, the extrusion lower pressing block moves downward, drives the folding block to rotate, folds the second folding edge, completes the lower pressing forming, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paper box forming, in particular to a paper box forming process and a paper box production line. BACKGROUND

[0002] A paper box is a three-dimensional container made of paper or paperboard, which has a certain rigidity and a containing space. Its core function is to protect the contents, convey information and provide convenience. It is widely used in commodity sales packaging and small-scale transportation packaging fields.

[0003] The patent with the application number CN201810852006.X discloses a top and bottom cover paper box forming machine. The forming machine includes a workbench, a rotating mechanism arranged in the middle of the workbench, four pressing plate mechanisms rotating above the workbench driven by the rotating mechanism, and a first flanging mechanism, a forming mechanism, a discharging mechanism and a paper box arranged around the rotating mechanism. The rotating mechanism includes a rotating table arranged above the workbench and rotatable around the vertical axis of the workbench, and a rotating motor driving the rotating table to rotate. The pressing plate mechanism includes a connecting frame fixed to the rotating table and provided with a vertical slide rail, a connecting plate vertically movable along the slide rail, a lifting motor driving the connecting plate to vertically move through a lifting transmission assembly, a pressing plate provided with a plurality of suction cups on the bottom surface, a plurality of pressing pieces vertically arranged above the lengthwise edge of the pressing plate, and a lifting cylinder driving the pressing pieces to vertically move. The forming machine should have the characteristics of high production efficiency and good product quality.

[0004] The current scheme adopts a right-angle folding plate to fold the paperboard along the folding line when folding the paperboard. However, the paperboard fold often needs to be folded twice during the folding process, so there are two folding lines. During the folding process, the second fold may not be folded along the second folding line, which may cause the paper box forming to fail and reduce the product qualification rate.

[0005] In view of this, we propose a paper box forming process and a paper box production line. SUMMARY

[0006] In order to overcome the defects in the prior art, the purpose of the present application is to provide a paper box forming process and a paper box production line. When the auxiliary pressing assembly is pressed, the auxiliary pressing part moves outward and abuts against the first fold of the folded paperboard. When the second fold is folded again, the second fold will only be folded along the second folding line. At the same time, the folding block is driven to rotate during the pressing process, and the fold is folded and formed at one time, which greatly improves the paper box production efficiency, so as to solve the problems raised in the background art.

[0007] To achieve the above-mentioned purpose, on the one hand, the present application provides the following technical scheme:

[0008] A carton production line, comprising a forming device, a lower pressing device for pressing paperboard and a sliding device for moving the lower pressing device, both sides of the forming device are provided with conveyors for moving in paperboard and moving out formed cartons respectively, the lower pressing device drives the paperboard to be extruded into the forming device to form a complete carton;

[0009] The paperboard is composed of a center plate and a first folding edge, a second folding edge and an auxiliary edge connected in sequence around the center plate, wherein both sides of a set of opposite first folding edges are provided with folding tongues;

[0010] The forming device comprises a base and a folding assembly installed on the base, the top surface of the base is provided with a forming table adapted to the center plate at the center, a plurality of folding edge plates are provided around the forming table at the top end of the base, the folding edge plates are used for folding the first folding edge, and a set of folding tongue racks for folding the folding tongues are welded and fixed on the opposite sides of the top surface of the base, the folding assembly comprises a lower pressing block movably inserted at the center of the top surface of the base and four folding blocks rotatably connected to the four sides of the top surface of the base, the lower pressing block moves downward to drive the folding blocks to rotate and fold the second folding edge and the auxiliary edge;

[0011] The lower pressing device comprises a lower pressing plate and an auxiliary pressing assembly installed on the lower pressing plate, the auxiliary pressing assembly comprises a stop block slidingly connected to the lower pressing plate and four auxiliary pressing pieces movably inserted into the four side surfaces of the lower pressing plate respectively, and the stop block moves downward to drive the auxiliary pressing pieces to slide outward to extrude the first folding edge.

[0012] The above arrangement takes into account that the paperboard needs to be folded twice during the folding process, and when the second folding edge is folded, it may not necessarily be folded along the second folding line, therefore, the auxiliary pressing assembly is arranged on the lower pressing plate, when the lower pressing block moves downward, it drives the auxiliary pressing pieces to slide outward through mechanical linkage and abuts against the first folding edge, so that when the second folding edge is folded, it will only be folded along the second folding line, avoiding folding errors that cause the carton forming to fail, at the same time, considering one-time pressing forming, the folding assembly is designed, when the lower pressing plate moves downward, it extrudes the lower pressing block to move downward, which drives the folding blocks to rotate through mechanical linkage to fold the second folding edge and the auxiliary edge, one-time forming greatly improves the production efficiency.

[0013] As a further improvement of the technical solution, the first support rods are hinged to the four side surfaces of the lower pressing block, the base is slidingly connected to the four sides of the base, one end of the rack near the lower pressing block is hinged to the end of the first support rod at the corresponding position, a gear meshing with the rack is rotatably connected above the rack, the gear is drivingly connected to the corresponding folding block above through the belts provided at both ends, and the first spring is arranged at the bottom end of the lower pressing block.

[0014] Under this setting, the pressing block moves down, pushes the rack to slide through the first support rod, drives the gear to rotate, and then drives the folding block to rotate through the belt, thereby folding the second edge. After the first spring completes the pressing, it pushes the pressing block to move up, and then the folding block returns to the original position through the first support rod, rack, gear and belt, so as to operate next time.

[0015] As a further improvement of the technical solution, a set of mounting frames for fixing the folding block are welded and fixed on each side of the top surface of the base, and an adjusting cavity for accommodating the folding assembly is formed in the inside of the base. The folding block is Z-shaped, and the end thereof is integrally formed with a resisting block. The auxiliary pressing member is welded and fixed with a baffle.

[0016] The Z-shaped folding block facilitates the 180° folding of the second edge. Considering that the auxiliary pressing member also abuts against the first edge when folding the second edge, it will hinder the folding of the second edge. The resisting block is designed to extrude the baffle welded and fixed on the auxiliary pressing member when the folding block rotates, so that the auxiliary pressing member moves back, thereby making the second edge fold smoothly by 180° and tightly adhere to the first edge. Meanwhile, the resisting block also folds the auxiliary edge to make it tightly adhere to the bottom side.

[0017] As a further improvement of the technical solution, second support rods are hinged on the four sides of the resisting block, and the other end of the second support rod is hinged with a sliding block. A plurality of second springs are arranged between the sliding block and the end block of the auxiliary pressing member.

[0018] The resisting block moves down, pushes the sliding block to slide through the second support rod, and the sliding block extrudes the spring. The spring then pushes the auxiliary pressing member to abut against the first edge, thereby completing the extrusion of the first edge.

[0019] As a further improvement of the technical solution, long box is welded and fixed on the top surface of the pressing plate, and a sliding groove adapted to the sliding block and the end block of the auxiliary pressing member is formed in the long box. A plurality of adsorption discs are installed on the pressing plate.

[0020] The long box is used to limit the sliding block and the auxiliary pressing member, so that the sliding block slides in the long box, extrudes the spring, and then extrudes the auxiliary pressing member to slide. The adsorption disc is used to adsorb the paperboard and drive it to move.

[0021] As a further improvement of the technical solution, a hydraulic cylinder is installed on the sliding device, and an auxiliary plate is welded and fixed on the end of the output end of the hydraulic cylinder. An insertion column is welded and fixed on the center of the top surface of the pressing plate, and the top end of the insertion column extends into the output shaft of the hydraulic cylinder after penetrating through the auxiliary plate.

[0022] The output end of the hydraulic cylinder moves down, so that the insertion column extends into the output shaft, thereby pushing the resisting block to move down.

[0023] As a further improvement of the technical solution, the lower pressing plate top surface is welded with a plurality of limiting rods, the end of the limiting rod extends out of the auxiliary plate top surface, and the part of the limiting rod below the auxiliary plate is sleeved with a third spring.

[0024] This arrangement takes into account that only the column is inserted on the hydraulic cylinder output end, the column will rotate, thereby causing the lower pressing plate to rotate, and a plurality of limiting rods are designed to limit the rotation of the lower pressing plate, thereby preventing the rotation, and the third spring controls the extrusion degree.

[0025] As a further improvement of the technical solution, the stopper is sleeved on the column, and the part of the column below the stopper is sleeved with a fourth spring.

[0026] This arrangement takes into account that the stopper moves downward to push the auxiliary pressing member to slide, the fourth spring makes the column extend out of the hydraulic cylinder output end in the normal state, and space is left for the stopper to move downward.

[0027] As a further improvement of the technical solution, the sliding device comprises a support, a sliding seat slidingly connected to the top end of the support, and a threaded rod rotationally connected to the support, a threaded hole matched with the threaded rod is formed in the sliding seat, and a motor is installed on one side of the support, and the output shaft of the motor is coaxially connected with the threaded rod.

[0028] This arrangement drives the threaded rod to rotate by the motor, so that the sliding seat slides back and forth along the support, thereby driving the lower pressing device to move back and forth.

[0029] On the other hand, the present application also provides a paper box forming process using the paper box production line, comprising the following steps:

[0030] S1, first, the cut and pleated paperboard is conveyed to one end close to the forming device through the conveyor belt, the motor is started, the lower pressing device is driven to move above the paperboard by the sliding seat, the hydraulic cylinder is started, the lower pressing plate is moved downward to abut against the paperboard, and the paperboard is adsorbed by the adsorption disc;

[0031] S2, then, the lower pressing device drives the paperboard to move above the forming device, the lower pressing device is moved downward by the hydraulic cylinder, the paperboard is moved downward, the tongue first touches the tongue holder and is folded inward by 90° under the action of the first folding edge plate;

[0032] S3, as the lower pressing device continues to press down, the stopper moves downward to push the sliding block to move through the second supporting rod, and the auxiliary pressing member abuts against the first folding edge by the second spring;

[0033] S4, in the process of moving downward of the lower pressing plate, the extrusion pressing block moves downward, the rack is pushed to slide by the first supporting rod, the gear is driven to rotate, and the folding block is driven to rotate by the belt to fold the second folding edge;

[0034] S5, when the second folded edge is folded by 90 degrees, the folding block is then rotated, the abutting block abuts against the baffle, pushes it to move backward, extrudes the second spring, and makes the auxiliary pressing piece slide back, the folding block drives the second folded edge to complete 180 degrees folding, and the abutting block drives the auxiliary edge to complete folding, and a complete carton is formed;

[0035] S6, finally, the lower pressing device is driven by the hydraulic cylinder to move upward, the suction disc sucks the carton to move upward, and the carton is separated from the forming device, and then the carton is moved to the other side of the conveying belt.

[0036] Compared with the prior art, the beneficial effects of the present application are:

[0037] 1. The carton forming process and carton production line, when the lower pressing plate is driven by the hydraulic cylinder to move downward to abut against the lower pressing block, the abutting block moves downward along the insertion column, the second supporting rod pushes the sliding block to slide, extrudes the second spring, and then pushes the auxiliary pressing piece to move outward to abut against the first folded edge, preventing the second folded edge from being folded along the first fold line when being folded, thus avoiding folding errors and improving production quality.

[0038] 2. The carton forming process and carton production line, when the lower pressing plate moves downward, the lower pressing block is extruded to move downward, the first supporting rod pushes the rack to slide, drives the gear to rotate, and then the belt drives the folding block to rotate to fold the second folded edge, thus completing the forming of the carton in one time, greatly improving the production efficiency.

[0039] 3. The carton forming process and carton production line, the folding block is rotated, the abutting block abuts against the baffle to move, the auxiliary pressing piece moves back, and the auxiliary pressing piece is prevented from hindering the folding of the second folded edge. BRIEF DESCRIPTION OF DRAWINGS

[0040] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present application in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative and are used to help understand the present application, and are not specific limitations on the shapes and proportions of the components of the present application. Those skilled in the art can select various possible shapes and proportions to implement the present application according to specific circumstances under the guidance of the present application.

[0041] Figure 1 is a schematic diagram of the overall structure of the present application;

[0042] Figure 2 is a sectional view of the overall structure of the present application;

[0043] Figure 3 is an exploded view of the overall structure of the present application;

[0044] Figure 4 is an exploded view of the sliding device structure of the present application;

[0045] Figure 5 is a sectional view of the forming device structure of the present application;

[0046] Figure 6 is an exploded view of the forming device structure of the present application;

[0047] Figure 7 is an exploded view of the folding assembly structure of the present application;

[0048] Figure 8 is a schematic view of the pressing-down device structure of the present application;

[0049] Figure 9 is a sectional view of the pressing-down device structure of the present application;

[0050] Figure 10 is an exploded view of the pressing-down device structure of the present application;

[0051] Figure 11 is an exploded view of the auxiliary pressing assembly structure of the present application;

[0052] Figure 12 is a schematic view of the paperboard structure of the present application;

[0053] The meanings of the respective reference numerals in the drawings are as follows:

[0054] 100, forming device; 110, base; 111, flange plate; 112, tongue holder; 113, mounting bracket; 114, forming table; 120, folding assembly; 121, pressing-down block; 122, first support rod; 123, rack; 124, gear; 125, belt; 126, folding block; 127, stop block; 128, first spring;

[0055] 200, pressing-down device; 210, pressing-down plate; 211, long box; 212, limiting rod; 213, insertion column; 214, adsorption disc; 220, auxiliary pressing assembly; 221, stop block; 222, second support rod; 223, sliding block; 224, second spring; 225, auxiliary pressing member; 226, baffle; 227, fourth spring; 230, third spring; 250, hydraulic cylinder; 251, auxiliary plate;

[0056] 300, sliding device; 310, support; 320, sliding seat; 330, threaded rod; 340, motor;

[0057] 400, conveying belt;

[0058] 500, paperboard; 510, center plate; 520, first flange; 530, second flange; 540, tongue; 550, auxiliary flange. DETAILED DESCRIPTION

[0059] The specific embodiments of the present application described herein are intended to be illustrative only and not limiting of the present application as a whole. Upon consideration of this description, with reference to the accompanying drawings, those of ordinary skill in the art will appreciate that any of the methods of the present application can be implemented by other programmatic means without departing from the scope of the present application. Those of ordinary skill will recognize that the present application can be manifested in a variety of ways and that the present application should be understood to include any structures or variations of the structures that are functionally similar to the structures described herein. The terms "mounted," "connected," and "coupled" are used broadly and encompass both direct and indirect mounting, connecting, and coupling, as well as any other possible mounting, connecting, and coupling, both visible and invisible, whether or not in physical contact.

[0060] The terms "center axis", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inner", "outer", and the like as used herein to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, in the description of the present application, the meaning of "several" is two or more, unless otherwise explicitly and specifically limited.

[0061] Referring to Figures 1-12 As shown in the drawings, the present application provides a technical solution,

[0062] A carton production line, comprising a forming device 100, a pressing device 200 for pressing paperboard 500, and a sliding device 300 for moving the pressing device 200, the forming device 100 is provided with a conveyor belt 400 on both sides for moving in paperboard 500 and moving out the formed carton, the pressing device 200 drives the paperboard 500 to extrude into the forming device 100 to form a complete carton, by setting the conveyor belt 400 and the sliding device 300 to transfer the paperboard 500 to be extruded and the formed carton, realizing production line work and improving production efficiency;

[0063] Referring to Figure 12 As shown in the drawings, the paperboard 500 is composed of a center plate 510 and a first folding edge 520, a second folding edge 530 and an auxiliary edge 550 connected in sequence around the center plate 510, wherein one set of opposite first folding edges 520 is provided with a folding tongue 540 on both sides.

[0064] Referring to Figure 5 and Figure 6As shown, the forming device 100 comprises a base 110 and a folding assembly 120 mounted on the base 110, the top surface of the base 110 is provided with a forming table 114 matched with the center plate 510, the top end of the base 110 is provided with a plurality of edge folding plates 111 around the forming table 114, the edge folding plates 111 are used for folding the first edge 520, the opposite sides of the top surface of the base 110 are each welded and fixed with a group of tongue folding frames 112 for folding the tongue 540, the height of the tongue folding frame 112 needs to be higher than the height of the edge folding plate 111, so as to ensure that the tongue 540 first contacts the tongue folding frame 112 in the pressing process, so that the tongue 540 is first folded by 90°, the height of the edge folding plate 111 near the side of the first edge 520 connected with the tongue 540 is higher than that of the edge folding plate 111 on the other two sides, so that the first edge 520 connected with the tongue 540 is first folded in the pressing process, and the first edges 520 on the other two sides are folded again, so that the tongue 540 is inside the first edge 520 when being folded, please refer to Figure 5 and Figure 7 As shown, the folding assembly 120 comprises a pressing block 121 movably inserted into the center of the top surface of the base 110 and four folding blocks 126 rotationally connected to the top surface of the base 110 at four corners, the pressing block 121 moves downward to drive the folding blocks 126 to rotate, so as to fold the second edge 530 and the auxiliary edge 550;

[0065] Please refer to Figure 9 and Figure 10 As shown, the pressing device 200 comprises a pressing plate 210 and an auxiliary pressing assembly 220 mounted on the pressing plate 210, please refer to Figure 11 As shown, the auxiliary pressing assembly 220 comprises a stop block 221 slidingly connected to the pressing plate 210 and four auxiliary pressing pieces 225 movably inserted into the four side surfaces of the pressing plate 210 respectively, the stop block 221 moves downward to drive the auxiliary pressing pieces 225 to slide outward to extrude the first edge 520, since the second edge 530 needs to be folded after the first edge 520 is folded, at this time, the second edge 530 may be folded along the first folding line when being folded, so that the second edge 530 fails to be folded, resulting in the failure of the carton forming, the auxiliary pressing piece 225 is designed to abut against the first edge 520 after being folded in the pressing process, so that the second edge 530 is only folded along the second folding line when being folded, thereby improving the production quality.

[0066] Specifically, please refer to Figure 5 and Figure 7As shown, the bottom 110 top four square welding fixed a set of for fixing the folding block 126 mounting bracket 113, the bottom 110 inside opening for containing the folding assembly 120 adjusting cavity, folding block 126 Z-shaped, and its end integral with the block 127, auxiliary pressure 225 welding fixed with the baffle 226, folding block 126 in the second fold 530 folding, auxiliary pressure 225 abut on the first fold 520, will hinder the second fold 530 folding, design compatible with the block 127 and baffle 226, when the folding block 126 rotates, the block 127 will extrude the baffle 226, so that the auxiliary pressure 225 back off from the first fold 520, so that the second fold 530 folding 180 ° smoothly on the first fold 520, at the same time, the block 127 also on the auxiliary edge 550 folding, so that it is closely on the bottom side.

[0067] Further, please refer to Figure 7 As shown, the lower block 121 four side surface are hinged with the first support rod 122, the bottom 110 four sides are slidingly connected with the rack 123, the rack 123 close to the lower block 121 one end and the corresponding position of the first support rod 122 end hinge, the rack 123 above are rotatably connected with the gear 124 engaged with it, the gear 124 through the two ends of the belt 125 and the corresponding folding block 126 above transmission connection, the lower block 121 bottom end is provided with the first spring 128, the lower block 121 down, through the first support rod 122 to push the rack 123 sliding, driving the gear 124 rotation, again through the belt 125 drive folding block 126 rotation, the second fold 530 folding.

[0068] Specifically, please refer to Figure 2 And Figure 9 As shown, the sliding device 300 is installed with hydraulic cylinder 250, the hydraulic cylinder 250 output end welding fixed with the auxiliary plate 251, the lower plate 210 top center welding fixed with the plug column 213, the plug column 213 top end through the auxiliary plate 251 after stretching into the output shaft of the hydraulic cylinder 250, start hydraulic cylinder 250 to push the auxiliary plate 251 down, drive the lower plate 210 down, when the lower plate 210 is blocked, the auxiliary plate 251 continues to move down, the plug column 213 into the output shaft of the hydraulic cylinder 250, in turn, so that the block 221 down, here is relative, that is, the distance between the block 221 and the lower plate 210 is shortened.

[0069] In addition, please refer to Figure 11As shown, the four sides of the block 221 are hinged with the second support rod 222, the other end of the second support rod 222 is hinged with the sliding block 223, the sliding block 223 and the end block of the auxiliary pressure piece 225 are provided with a plurality of second springs 224, the block 221 is lowered, the second support rod 222 pushes the sliding block 223 to slide outward, the sliding block 223 extrudes the second spring 224 and then extrudes the auxiliary pressure piece 225 to slide outward, so that the auxiliary pressure piece 225 extrudes the first folding edge 520.

[0070] Further, please refer to Figure 9 and Figure 10 As shown, the top surface of the lower pressing plate 210 is welded and fixed with the long box 211, the long box 211 is provided with a sliding groove matched with the sliding block 223 and the end block of the auxiliary pressure piece 225, the lower pressing plate 210 is installed with a plurality of adsorption discs 214, the block 221 is lowered to push the second support rod 222 to push the sliding block 223 to slide along the long box 211, the sliding of the sliding block 223 is limited, and the adsorption disc 214 is used to adsorb the paperboard 500, so as to facilitate the feeding and discharging of the paperboard 500.

[0071] Specifically, please refer to Figure 10 As shown, the top surface of the lower pressing plate 210 is welded and fixed with a plurality of limiting rods 212, the end of the limiting rod 212 extends out of the top surface of the auxiliary plate 251, the part of the limiting rod 212 below the auxiliary plate 251 is sleeved with the third spring 230, in order to prevent the lower pressing plate 210 from rotating when pressing down, a plurality of limiting rods 212 are designed to pass through the auxiliary plate 251 to limit the downward movement of the lower pressing plate 210 and prevent it from rotating, and the third spring 230 is designed to reduce the pressure of the downward movement of the lower pressing plate 210 to prevent the impact from being too violent and causing mechanical damage.

[0072] It is worth mentioning that, please refer to Figure 4 As shown, the sliding device 300 includes a bracket 310, a sliding seat 320 slidingly connected to the top end of the bracket 310, and a threaded rod 330 rotatably connected to the bracket 310, the sliding seat 320 is provided with a threaded hole matched with the threaded rod 330, the bracket 310 is installed with a motor 340, the output shaft of the motor 340 is coaxially connected with the threaded rod 330, the motor 340 provides power for the rotation of the threaded rod 330, the rotation of the threaded rod 330 drives the sliding seat 320 to slide back and forth, and then moves the lower pressing device 200.

[0073] Further, please refer to Figure 8 and Figure 10 As shown, the block 221 is sleeved on the insertion column 213, the part of the insertion column 213 below the block 221 is sleeved with the fourth spring 227, the fourth spring 227 releases the elastic potential energy to push the block 221 to move upward after the pressing is completed, so that the auxiliary pressure piece 225 is retracted into the lower pressing plate 210, in order to facilitate the next pressing operation.

[0074] The application further provides a carton forming process using the carton production line, comprising the following steps:

[0075] S1, first, the cut and pleated paperboard 500 is conveyed to one end close to the forming device 100 through the conveying belt 400, the motor 340 is started, the lower pressing device 200 is driven to move above the paperboard 500 through the sliding seat 320, the lower pressing plate 210 is lowered to abut against the paperboard 500 by starting the hydraulic cylinder 250, and the suction disc 214 is used for suction;

[0076] S2, then, the lower pressing device 200 drives the paperboard 500 to move above the forming device 100, the lower pressing device 200 is lowered by the hydraulic cylinder 250, the paperboard 500 is lowered, the tab 540 is first contacted with the tab holder 112 and is inwardly folded, and then the first flange 520 is inwardly folded by 90° under the action of the flange plate 111;

[0077] S3, as the lower pressing device 200 continues to press, the stop block 221 is lowered to drive the sliding block 223 to move through the second supporting rod 222, and the auxiliary pressing part 225 is driven to abut against the first flange 520 through the second spring 224;

[0078] S4, in the process that the lower pressing plate 210 is lowered, the extrusion pressing block 121 is lowered to drive the rack 123 to slide through the first supporting rod 122, drive the gear 124 to rotate, and then drive the folding block 126 to rotate through the belt 125 to fold the second flange 530;

[0079] S5, when the second flange 530 is folded by 90°, the folding block 126 is then rotated to abut against the stop block 127, drive the stop block 226 to move backward, extrude the second spring 224, and make the auxiliary pressing part 225 slide back, the folding block 126 drives the second flange 530 to complete 180° folding, and the stop block 127 drives the auxiliary flange 550 to complete folding, and a complete carton is formed;

[0080] S6, finally, the lower pressing device 200 is driven to move upward by the hydraulic cylinder 250, the suction disc 214 is used for suction to make the carton move upward, and the carton is separated from the forming device 100, and then the carton is moved to the other conveying belt 400.

[0081] It should be noted that the above embodiments only serve to illustrate the technical concept and characteristics of the application, and the purpose is to enable those skilled in the art to understand the content of the application and implement it, and cannot limit the protection scope of the application. Any equivalent changes or modifications made according to the spirit and essence of the application should be covered within the protection scope of the application.

Claims

1. A paper box production line, comprising a forming device, a pressing device for pressing paperboard, and a sliding device for moving the pressing device, characterized in that: The forming device is equipped with conveyor belts on both sides for respectively moving in cardboard and moving out of the formed cardboard box. The pressing device drives the cardboard to be squeezed into the forming device to form a complete cardboard box. The cardboard consists of a central plate and a first folded edge, a second folded edge, and an auxiliary edge connected around it in sequence. Each pair of opposite first folded edges has a flap on both sides. The forming device includes a base and a folding assembly mounted on the base. A forming platform adapted to a center plate is provided at the center of the top surface of the base. Several folding plates are provided around the forming platform at the top of the base. The folding plates are used to fold the first fold. A set of folding tongue frames for folding the folding tongue are welded and fixed on opposite sides of the top surface of the base. The folding assembly includes a pressing block movably inserted into the center of the top surface of the base and four folding blocks rotatably connected to the four sides of the top surface of the base. The pressing block moves down and drives the folding blocks to rotate, folding the second fold and the auxiliary edge. The pressing device includes a pressing plate and an auxiliary pressing assembly installed on the pressing plate. The auxiliary pressing assembly includes a stop block slidably connected to the pressing plate and four auxiliary pressing parts that are movably inserted into the four sides of the pressing plate. The stop block moves down and causes the auxiliary pressing parts to slide outward and press the first folded edge. The lower pressure block is hinged to four sides with a first support rod, and the base is slidably connected to racks in all four directions. The end of the rack near the lower pressure block is hinged to the end of the first support rod at the corresponding position. The rack is rotatably connected to a gear that meshes with it. The gear is connected to the corresponding folding block above it through belts at both ends. The lower pressure block is provided with a first spring at the bottom end. A set of mounting brackets for fixing the folding block is welded and fixed on all four sides of the top surface of the base. An adjustment cavity for accommodating the folding component is opened inside the base. The folding block is Z-shaped and has an abutment block integrally formed at its end. A baffle is welded and fixed on the auxiliary pressing component. The four sides of the stop block are hinged with second support rods, and the other end of the second support rod is hinged with a slider. Several second springs are provided between the slider and the end block of the auxiliary pressure member.

2. The paper box production line according to claim 1, characterized in that: The top surface of the lower pressure plate is welded and fixed with long strip boxes on all four sides. The long strip boxes are provided with sliding grooves that are compatible with the end blocks of the slider and the auxiliary pressure component. Several adsorption plates are installed on the lower pressure plate.

3. The paper box production line according to claim 2, characterized in that: A hydraulic cylinder is installed on the sliding device. An auxiliary plate is welded and fixed to the output end of the hydraulic cylinder. A pin is welded and fixed to the center of the top surface of the lower pressure plate. The top of the pin passes through the auxiliary plate and extends into the output shaft of the hydraulic cylinder.

4. The paper box production line according to claim 3, characterized in that: Several limiting rods are welded and fixed to the top surface of the lower pressure plate. The ends of the limiting rods extend out of the top surface of the auxiliary plate, and a third spring is sleeved on the portion of the limiting rod located under the auxiliary plate.

5. The paper box production line according to claim 4, characterized in that: The stop block is sleeved on the insert post, and a fourth spring is sleeved on the portion of the insert post located below the stop block.

6. The paper box production line according to claim 5, characterized in that: The sliding device includes a bracket, a sliding seat slidably connected to the top of the bracket, and a threaded rod rotatably connected to the bracket. The sliding seat has a threaded hole adapted to the threaded rod. A motor is installed on one side of the bracket, and the output shaft of the motor is coaxially connected to the threaded rod.

7. A paper box forming process, using the paper box production line of claim 6, characterized in that, Includes the following steps: S1. First, the cut and pleated cardboard is conveyed to one end of the forming device via a conveyor belt. The motor is started, and the sliding seat drives the pressing device to move directly above the cardboard. The hydraulic cylinder is started, so that the pressing plate moves down to abut against the cardboard and is adsorbed by the adsorption plate. S2. Next, the pressing device moves the cardboard to the top of the forming device. The hydraulic cylinder pushes the pressing device down, and the cardboard moves down with it. The folding tongue first touches the folding tongue frame and folds inward. Then, the first folding edge completes a 90° fold inward under the action of the folding plate. S3. As the pressing device continues to press down, the stop block moves down and pushes the slider to move through the second support rod. The second spring pushes the auxiliary pressing part to abut the first folded edge. S4. During the downward movement of the lower pressure plate, the pressure block is squeezed and moved downward. The rack is pushed to slide through the first support rod, which drives the gear to rotate. Then, the belt drives the folding block to rotate, folding the second edge. S5. When the second fold edge is folded over 90°, the folding block continues to rotate, the abutment block abuts against the baffle, pushes it to move backward, squeezes the second spring, causing the auxiliary pressing part to slide back, the folding block drives the second fold edge to complete a 180° fold, and at the same time the abutment block drives the auxiliary edge to complete the folding, forming a complete cardboard box. S6. Finally, the hydraulic cylinder drives the pressing device to move upward, and the suction plate adsorbs the paper box and moves it upward, so that it is detached from the forming device, and then the paper box is moved to the other side of the conveyor belt.

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