Paper box forming process and paper box production line

Abstract

The invention relates to the technical field of carton forming, in particular to a carton forming process and a carton production line, comprising a forming device, a pressing device for pressing a paperboard and a sliding device for moving the pressing device, and conveyor belts for moving the paperboard in and moving the formed carton out are arranged on both sides of the forming device; and the pressing device drives the paperboards to be extruded into the forming device to form a complete carton. According to the pressing device, the pressing plate moves downwards, the check block moves downwards, the auxiliary pressing piece is pushed to move outwards and abuts against the first folding edge, the second folding edge is prevented from being folded along the first folding line during folding, folding errors are avoided, when the pressing plate moves downwards, the pressing block is extruded to move downwards, the folding block is driven to rotate, the second folding edge is folded, pressing forming is completed, 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, and 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 about 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 purpose, on the one hand, the present application provides the following technical scheme: 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 a conveying belt for moving in paperboard and moving out formed carton respectively, the lower pressing device drives the paperboard to extrude into the forming device to form a complete carton; 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 group of opposite first folding edges are provided with folding tongues; The forming device comprises a base and a folding assembly installed on the base, a forming table adapted to the center plate is arranged at the center of the top surface of the base, a plurality of folding edge plates for folding the first folding edge are arranged around the top end of the base along the forming table, folding tongue racks for folding the folding tongues are welded and fixed on both 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; 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, the stop block moves downward to drive the auxiliary pressing pieces to slide outward to extrude the first folding edge.

[0008] 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, and 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 the second folding edge is only folded along the second folding line when it is folded, avoiding folding errors that cause the carton forming to fail. In addition, the folding assembly is designed for one-time pressing forming, and 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, thereby greatly improving the production efficiency.

[0009] As a further improvement of the technical solution, first support rods are hinged to the four side surfaces of the lower pressing block, racks are slidingly connected to the four sides of the base, one end of the rack close to the lower pressing block is hinged to the end of the first support rod at the corresponding position, gears meshing with the racks are rotatably connected above the racks, the gears are drivingly connected to the corresponding folding blocks above through the belts arranged at both ends, and the bottom end of the lower pressing block is provided with a first spring.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] As a further improvement of the technical solution, second support rods are hinged on the four sides of the resisting block, and the other ends of the second support rods are hinged with sliding blocks. A plurality of second springs are arranged between the sliding blocks and the end blocks of the auxiliary pressing member.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] As a further improvement of the technical solution, a hydraulic cylinder is installed on the sliding device, an auxiliary plate is welded and fixed on the end of the output end of the hydraulic cylinder, a plug column is welded and fixed on the center of the top surface of the pressing plate, and the top end of the plug column extends into the output shaft of the hydraulic cylinder after penetrating through the auxiliary plate.

[0018] The output end of the hydraulic cylinder moves down, so that the plug column extends into the output shaft, thereby pushing the resisting block to move down.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] On the other hand, the present application also provides a paper box forming process using the paper box production line, comprising the following steps: 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 by the sliding seat to move above the paperboard, 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; S2, then, the lower pressing device drives the paperboard to move above the forming device, the hydraulic cylinder drives the lower pressing device to move downward, the paperboard moves downward, the tongue first touches the tongue holder and folds inward, and then the first fold edge is folded inward by 90° under the action of the fold edge plate; S3, as the lower pressing device continues to press down, the stopper moves downward to drive the sliding block to move through the second supporting rod, and the auxiliary pressing member abuts against the first fold edge through the second spring; S4, during the downward movement of the lower pressing plate, the extrusion pressing block moves downward, the rack is driven to slide through the first supporting rod, the gear is driven to rotate, and the folding block is driven to rotate through the belt, so as to fold the second fold edge; S5, when the second folded edge is folded over 90°, the folding block is rotated to abut against the stop plate, and push it to move backward, extrude the second spring, and make the auxiliary pressing member slide back, the folding block drives the second folded edge to complete 180° folding, and the stop block drives the auxiliary edge to complete folding, and a complete carton is formed; S6, finally, the lower pressing device is driven by the hydraulic cylinder to move upward, the suction disc absorbs 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.

[0026] Compared with the prior art, the paper box forming process and the paper box production line have the following beneficial effects: 1. The paper box forming process and the paper box production line, when the hydraulic cylinder is started to drive the lower pressing plate to move downward to abut against the lower pressing block, the stop block moves downward along the insertion column, the second supporting rod pushes the sliding block to slide, the second spring is extruded, and the auxiliary pressing member is pushed to move outward to abut against the first folded edge, so that the second folded edge is prevented from being folded along the first fold line when being folded, and the production quality is improved.

[0027] 2. The paper box forming process and the paper box 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, the gear is driven to rotate, and then the belt drives the folding block to rotate to fold the second folded edge, and the paper box is formed by one-time pressing, and the production efficiency is greatly improved.

[0028] 3. The paper box forming process and the paper box production line, the folding block is rotated, the stop block abuts against the stop plate to move, the auxiliary pressing member is moved back, and the auxiliary pressing member is prevented from hindering the folding of the second folded edge. DETAILED DESCRIPTION

[0029] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure 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.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a sectional view of the overall structure of the present application; Figure 3 It is an exploded view of the overall structure of the present application; Figure 4 It is an exploded view of the sliding device structure of the present application; Figure 5 It is a sectional view of the forming device structure of the present application; Figure 6 It is an exploded view of the forming device structure of the present application; Figure 7 is an exploded view of the folding assembly structure of the present application; Figure 8 is a schematic view of the pressing-down device structure of the present application; Figure 9 is a sectional view of the pressing-down device structure of the present application; Figure 10 is an exploded view of the pressing-down device structure of the present application; Figure 11 is an exploded view of the auxiliary pressing assembly structure of the present application; Figure 12 is a schematic view of the paperboard structure of the present application; The meanings of the respective reference numerals in the drawings are as follows: 100, forming device; 110, base; 111, flange plate; 112, tongue holder; 113, mounting bracket; 114, forming table; 120, folding assembly; 121, pressing block; 122, first support rod; 123, rack; 124, gear; 125, belt; 126, folding block; 127, stop block; 128, first spring; 200, pressing-down device; 210, pressing 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 piece; 226, baffle; 227, fourth spring; 230, third spring; 250, hydraulic cylinder; 251, auxiliary plate; 300, sliding device; 310, support; 320, sliding seat; 330, threaded rod; 340, motor; 400, conveying belt; 500, paperboard; 510, center plate; 520, first flange; 530, second flange; 540, tongue; 550, auxiliary edge. DETAILED DESCRIPTION

[0031] The details of the application can be more clearly understood with reference to the drawings and the following description of specific embodiments of the application. However, the specific embodiments of the application described herein are intended for purposes of illustration only and are not intended to be limiting in any way. These and other possible variations of the application are deemed to be within the scope of the application. The terms "mounting" and "connected" should be construed broadly and can be direct connection or indirect connection through an intermediate medium.

[0032] The terms "central axis", "vertical", "horizontal", "front", "back", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" and the like as used herein to indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on 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.

[0033] Referring to Figures 1-12 , the present application provides a technical solution, A carton production line, comprising a forming device 100, a lower pressing device 200 for pressing paperboard 500, and a sliding device 300 for moving the lower pressing device 200, the forming device 100 is provided with a conveyor belt 400 on both sides for moving in and out of the paperboard 500 and the formed carton, the lower 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; Referring to Figure 12 , the paperboard 500 is composed of a center plate 510 and a first fold edge 520, a second fold edge 530 and an auxiliary edge 550 connected in sequence around the center plate 510, wherein one set of opposite first fold edges 520 are provided with a fold tongue 540 on both sides.

[0034] Referring to Figure 5 and Figure 6 , 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 adapted to the center plate 510, the top end of the base 110 is provided with a plurality of fold edge plates 111 around the forming table 114, the fold edge plates 111 are used to fold the first fold edge 520, the opposite sides of the top surface of the base 110 are each welded and fixed with a set of fold tongue racks 112 for folding the fold tongue 540, the height of the fold tongue rack 112 needs to be higher than the height of the fold edge plate 111, to ensure that the fold tongue 540 first contacts the fold tongue rack 112 during the pressing process, so that the fold tongue 540 is first folded 90°, the height of the fold edge plate 111 on the side close to the first fold edge 520 connected to the fold tongue 540 is higher than that of the other two sides, so that during the pressing process, the first fold edge 520 connected to the fold tongue 540 is first folded, and the other two sides of the first fold edge 520 are folded again, so that the fold tongue 540 is inside the first fold edge 520 when it is folded, referring to Figure 5 and Figure 7As shown, the folding assembly 120 comprises a pressing block 121 movably inserted at the center of the top surface of the base 110 and four folding blocks 126 rotatably connected to the four corners of the top surface of the base 110, the pressing block 121 moves downward to drive the folding blocks 126 to rotate, thereby folding the second fold edge 530 and the auxiliary edge 550; As shown in 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 slidably connected to the pressing plate 210 and four auxiliary pressing members 225 movably inserted at the four sides of the pressing plate 210, respectively, the stop block 221 moves downward to drive the auxiliary pressing members 225 to slide outward to press the first fold edge 520. Since the second fold edge 530 needs to be folded after the first fold edge 520 is folded, the second fold edge 530 may not be folded along the second fold line, but may be folded along the first fold line, so that the second fold edge 530 fails to be folded, resulting in the failure of the carton forming. The auxiliary pressing members 225 are designed to abut against the first fold edge 520 during the pressing process, so that the second fold edge 530 is folded along the second fold line only, thereby improving the production quality.

[0035] Specifically, please refer to Figure 5 and Figure 7 As shown, the top surface of the base 110 is welded with a set of mounting frames 113 for fixing the folding blocks 126, and the inside of the base 110 is provided with an adjusting cavity for accommodating the folding assembly 120. The folding blocks 126 are in Z shape, and the end portions thereof are integrally formed with stop blocks 127. The auxiliary pressing members 225 are welded with baffle plates 226. When the folding blocks 126 fold the second fold edge 530, the auxiliary pressing members 225 abut against the first fold edge 520, which hinders the folding of the second fold edge 530. The stop blocks 127 and the baffle plates 226 are designed to be compatible, so that when the folding blocks 126 rotate, the stop blocks 127 press the baffle plates 226, so that the auxiliary pressing members 225 move back to disengage from the first fold edge 520, so that the second fold edge 530 is smoothly folded by 180° and tightly abuts against the first fold edge 520. At the same time, the stop blocks 127 also fold the auxiliary edge 550, so that it tightly abuts against the bottom side.

[0036] Further, please refer to Figure 7As shown, the four sides of the lower pressing block 121 are hingedly connected with first support rods 122, and the base 110 is slidably connected with racks 123 at four directions, one end of the rack 123 close to the lower pressing block 121 is hingedly connected with the end of the first support rod 122 at the corresponding position, and the rack 123 is rotatably connected with a gear 124 engaged therewith above, the gear 124 is drivingly connected with a corresponding folding block 126 above through a belt 125 provided at both ends, and the lower pressing block 121 is provided with a first spring 128 at the bottom end, the lower pressing block 121 moves downward, pushes the rack 123 to slide through the first support rod 122, drives the gear 124 to rotate, and then drives the folding block 126 to rotate through the belt 125, so as to fold the second folding edge 530.

[0037] Specifically, please refer to Figure 2 and Figure 9 As shown, the sliding device 300 is provided with a hydraulic cylinder 250, the output end of the hydraulic cylinder 250 is welded and fixed with an auxiliary plate 251, the top surface of the lower pressing plate 210 is welded and fixed with a plug column 213 at the center, the plug column 213 extends into the output shaft of the hydraulic cylinder 250 after penetrating through the auxiliary plate 251, the auxiliary plate 251 is pushed to move downward by starting the hydraulic cylinder 250, and the lower pressing plate 210 is driven to move downward, when the lower pressing plate 210 is blocked, the auxiliary plate 251 continues to move downward, the plug column 213 extends into the output shaft of the hydraulic cylinder 250, and then the stop block 221 moves downward, and the downward movement here is relative, that is, the distance between the stop block 221 and the lower pressing plate 210 is shortened.

[0038] In addition, please refer to Figure 11 As shown, the four sides of the stop block 221 are hingedly connected with second support rods 222, the other end of the second support rod 222 is hingedly connected with a sliding block 223, and a plurality of second springs 224 are arranged between the sliding block 223 and the end block of the auxiliary pressing piece 225, the stop block 221 moves downward, the sliding block 223 is pushed to slide outward through the second support rod 222, the sliding block 223 extrudes the second spring 224 and then extrudes the auxiliary pressing piece 225 to slide outward, so that the auxiliary pressing piece 225 extrudes the first folding edge 520.

[0039] 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 a long box 211 at four directions, the long box 211 is provided with a sliding groove matched with the sliding block 223 and the end block of the auxiliary pressing piece 225, and the lower pressing plate 210 is provided with a plurality of adsorption discs 214, the stop block 221 moves downward 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 for adsorbing the paperboard 500, so as to facilitate the feeding and discharging of the paperboard 500.

[0040] Specifically, please refer to Figure 10As shown, the top surface of the lower pressing plate 210 is welded 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 under the auxiliary plate 251 is sleeved with a 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 excessive impact and mechanical damage.

[0041] It is worth noting that, please refer to Figure 4 As shown, the sliding device 300 includes a support 310, a sliding seat 320 slidingly connected to the top end of the support 310, and a threaded rod 330 rotatably connected to the support 310, the sliding seat 320 is provided with a threaded hole matched with the threaded rod 330, and a motor 340 is installed on one side of the support 310, 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, thereby moving the pressing device 200.

[0042] Further, please refer to Figure 8 and Figure 10 As shown, the stop block 221 is sleeved on the insertion column 213, and the part of the insertion column 213 under the stop block 221 is sleeved with a fourth spring 227, and after the pressing is completed, the fourth spring 227 releases the elastic potential energy to push the stop block 221 to move upward, so that the auxiliary pressing part 225 is retracted into the lower pressing plate 210, for the next pressing operation.

[0043] The application also provides a paper box forming process using the paper box production line, which comprises the following steps: S1, first, the paperboard 500 after cutting and pleating is conveyed to one end close to the forming device 100 through the conveying belt 400, the motor 340 is started, the pressing device 200 is driven to move above the paperboard 500 through the sliding seat 320, the hydraulic cylinder 250 is started to make the lower pressing plate 210 move downward to abut against the paperboard 500, and the adsorption disc 214 is used for adsorption; S2, then, the pressing device 200 drives the paperboard 500 to move above the forming device 100, the hydraulic cylinder 250 drives the pressing device 200 to move downward, the paperboard 500 moves downward, the tab 540 first touches the tab holder 112 and is folded inward, and then the first folding edge 520 is folded inward by 90° under the action of the folding edge plate 111; S3, as the pressing device 200 continues to press down, the stop block 221 moves downward to drive the sliding block 223 to move through the second supporting rod 222, and the auxiliary pressing part 225 abuts against the first folding edge 520 through the second spring 224; S4, in the process of the lower pressing plate 210 moving down, the extrusion lower pressing block 121 moves down, pushes the gear rack 123 to slide through the first support rod 122, drives the gear 124 to rotate, and then drives the folding block 126 to rotate through the belt 125, and the second folding edge 530 is folded; S5, when the second folding edge 530 is folded by 90°, the folding block 126 continues to rotate, the abutting block 127 abuts against the baffle 226, pushes it to move backward, extrudes the second spring 224, and makes the auxiliary pressing piece 225 slide back, the folding block 126 drives the second folding edge 530 to complete 180° folding, and at the same time, the abutting block 127 drives the auxiliary edge 550 to complete folding, and a complete carton is formed; S6, finally, the lower pressing device 200 is driven to move up through the hydraulic cylinder 250, the suction disc 214 sucks the carton to move up, and the carton is separated from the forming device 100, and then the carton is moved to the other side of the conveying belt 400.

[0044] It should be noted that the above-mentioned embodiments only serve to illustrate 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. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A carton production line comprising a forming device, a pressing device for pressing a cardboard, and a sliding device for moving the pressing device, characterized in that: Conveyor belts are provided on both sides of the forming device for moving paperboards in and out of the formed carton respectively, and the pressing device drives the paperboards to squeeze into the forming device to form a complete carton; The paperboard is composed of a central board and a first folding edge, a second folding edge and an auxiliary edge connected in sequence around the central board, wherein a set of opposite first folding edges are provided with folding tongues on both sides; The forming device includes a base and a folding assembly installed on the base, a forming table adapted to the center plate is provided at the center of the top surface of the base, a plurality of folding plates are provided along the four sides of the forming table at the top of the base, the folding plates are used to fold the first folding edge, and a group of folding tongue frames for folding the folding tongues are welded and fixed on opposite sides of the top surface of the base, the folding assembly includes a lower pressing block movably plugged 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 lower pressing block moves downward to drive the folding blocks to rotate, and folds the second folding edge and the auxiliary edge; The downward pressure device includes a downward pressure plate and an auxiliary pressure assembly installed on the lower pressure plate. The auxiliary pressure assembly includes a stopper slidably connected to the lower pressure plate and four auxiliary pressure pieces movably plugged into the four sides of the lower pressure plate. The downward movement of the stopper drives the auxiliary pressure piece to slide outward and squeeze the first folding edge.

2. The carton production line according to claim 1, characterized in that: The four sides of the lower pressure block are hinged with the first support rod, and the base is slidably connected to the four directions with racks. The end of the rack close to the lower pressure block is hinged to the end of the first support rod at the corresponding position, and the top of the rack is rotatably connected to a gear meshing with it. The gear is connected to the corresponding folding block above through belts provided at both ends, and a first spring is provided at the bottom end of the lower pressure block.

3. The carton production line according to claim 2, characterized in that: A group of mounting brackets for fixing the folding block are welded and fixed on all four sides of the top surface of the base. An adjustment cavity for accommodating the folding assembly is provided inside the base. The folding block is Z-shaped, and a stop block is integrally formed at its end. A baffle is welded and fixed on the auxiliary pressure piece.

4. The carton production line according to claim 3, characterized in that: The four side surfaces of the stopper are hinged with second support rods, the other end of the second support rod is hinged with a slider, and a plurality of second springs are provided between the slider and the end block of the auxiliary pressure piece.

5. The carton production line according to claim 4, characterized in that: A long box is welded and fixed on all four sides of the top surface of the lower pressure plate. A sliding groove adapted to the slider and the end block of the auxiliary pressure piece is opened in the long box. A plurality of adsorption disks are installed on the lower pressure plate.

6. The carton production line according to claim 5, 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, and a column is welded and fixed at the center of the top surface of the lower pressure plate. The top end of the column passes through the auxiliary plate and extends into the output shaft of the hydraulic cylinder.

7. The carton production line according to claim 6, characterized in that: A plurality of limiting rods are welded and fixed to the top surface of the lower pressure plate, and the ends of the limiting rods extend out of the top surface of the auxiliary plate. The portion of the limiting rods located under the auxiliary plate is sleeved with a third spring.

8. The carton production line according to claim 7, characterized in that: The stopper is sleeved on the plug post, and a portion of the plug post located below the stopper is sleeved with a fourth spring.

9. The carton production line according to claim 8, 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 is provided with 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.

10. A carton forming process using the carton production line according to claim 9, characterized in that: The following steps are involved: S1. First, the cut and pleated cardboard is transported to one end near the forming device via a conveyor belt. The motor is started, and the sliding seat drives the pressing device to move to the top of the cardboard. The hydraulic cylinder is activated, so that the lower pressing plate moves down to contact the cardboard, and the suction plate is used to absorb it. S2. Then, the pressing device drives the cardboard to move to the top of the forming device. The hydraulic cylinder pushes the pressing device downward, and the cardboard moves downward accordingly. The folding tongue first touches the folding tongue frame and folds inward. Then, the first folding edge is folded inward by 90 degrees under the action of the folding plate. S3, as the pressing device continues to press downward, the stopper moves downward and pushes the slider to move via the second support rod, and the auxiliary pressure member is pushed to abut against the first folded edge via the second spring; S4, when the lower pressing plate moves downward, the lower pressing block is squeezed downward, and the rack is pushed to slide through the first support rod, driving the gear to rotate, and then the folding block is driven to rotate through the belt to fold the second folding edge; S5, when the second folding edge is folded over 90°, the folding block continues to rotate, the abutment block abuts the baffle, pushing it to move backward, squeezing the second spring, causing the auxiliary pressure piece to slide back, and the folding block drives the second folding edge to complete the 180° folding. At the same time, the abutment block drives the auxiliary edge to complete the folding, forming a complete paper box; S6. Finally, the hydraulic cylinder drives the pressing device to move upward, and the adsorption plate adsorbs the paper box and moves it upward, so that it is separated from the forming device, and then the paper box is moved to the other side of the conveyor belt.

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