A corrugated box forming machine

Abstract

The utility model relates to corrugated paper processing equipment field, specifically disclose a kind of corrugated carton forming machine, including top frame and underframe, multiple posts are equipped between top frame and underframe, and underframe is equipped with down-pressing forming assembly, and down-pressing forming assembly includes forming box, and rebounding plate is equipped in forming box and reciprocates along its inner side wall up and down, and the bottom of rebounding plate is fixed with guide rod, and underframe is fixed with guide sleeve, and guide sleeve is sleeved on the outside of guide rod, and the lower portion of guide sleeve and rebounding plate is abutted with rebounding spring, and the top of forming box four corners is equipped with limiting block, and the top of rebounding plate four corners is equipped with limiting slot, and limiting block and limiting block are matched with each other;Workpiece is automatically ejected by rebounding plate and rebounding spring cooperation, solve the problem that traditional forming box takes piece difficultly, and limiting block and limiting slot cooperation guarantee blank stress surface smooth when forming, improve forming precision, and guide rod and guide sleeve enhance the moving stability of rebounding plate, avoid skew.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper processing equipment, and in particular to a corrugated cardboard box forming machine. Background Technology

[0002] Corrugated paper is a typical multi-layer composite paper material. Its structure consists of face paper, core paper, and liner paper bonded together by a special process. It has the characteristics of being lightweight and having a certain structural strength. Corrugated paper extrusion molding is a processing method that changes the physical form of corrugated paper by applying external force to form a specific three-dimensional structure. It is mainly used to realize functions such as cushioning packaging and processing of irregular structural parts to meet the packaging protection and structural support needs in different scenarios.

[0003] In current corrugated paper extrusion molding operations, the process typically involves placing the corrugated paper blank to be extruded into a molding box, and applying pressure to the blank inside the box through an extrusion mechanism to complete the molding. However, after the molding operation is completed, the finished corrugated paper is directly left in the bottom area of ​​the molding box. Due to the limitations of the molding box cavity depth, inner wall structure, and the shape of the corrugated paper after molding, it is difficult for operators to quickly and conveniently remove it from the box, which directly affects the efficiency of subsequent processes and increases labor costs.

[0004] The technical problem to be solved in this application is: how to achieve rapid unloading of the formed corrugated paper. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a corrugated carton forming machine that can automatically eject and pick up parts, taking into account both forming accuracy and picking efficiency.

[0006] The technical solution adopted by this utility model is as follows: a corrugated cardboard box forming machine, including a top frame and a bottom frame, with multiple columns for support between the top frame and the bottom frame, and a pressing forming component on the bottom frame, including a forming box, with a spring plate that slides back and forth along its inner side wall inside the forming box, a guide rod fixed at the bottom of the spring plate, a guide sleeve fixed on the bottom frame and sleeved outside the guide rod, a spring spring sleeved outside the guide rod abutting the upper part of the guide sleeve and the lower part of the spring plate, and a limit block installed at the four corners of the top of the forming box, and a limit groove that mates with the limit block at the four corners of the top of the spring plate, when the limit block is fully inserted into the limit groove, the upper end face of the forming box and the upper surface of the spring plate are on the same horizontal plane.

[0007] The multi-layer corrugated paper blank to be processed is placed on the spring plate. When it is squeezed, the external force pushes the spring plate to move down along the inner side wall of the forming box. The guide rod slides synchronously along the guide sleeve to achieve guidance. The spring spring is compressed. After the blank is squeezed and formed, the spring spring returns to its original position and pushes the spring plate to move up, so that the limit block is fully embedded in the limit groove. At this time, the spring plate is flush with the upper surface of the forming box, which drives the formed corrugated paper to detach from the bottom of the forming box.

[0008] In some embodiments, the pressing forming assembly also includes a pressure plate cylinder mounted on the top frame. A forming pressure plate is fixed to the telescopic end of the pressure plate cylinder, and the forming pressure plate matches the shape and size of the forming box. The pressure plate cylinder drives the forming pressure plate to move vertically downward. Because the forming pressure plate matches the shape and size of the forming box, it can be precisely embedded into the forming box, applying uniform pressure to the blank to complete the extrusion forming. After forming, the pressure plate cylinder resets, driving the forming pressure plate to move upward and detach from the forming box. The forming pressure plate matches the inner cavity of the forming box, ensuring that the blank is subjected to uniform force in all parts.

[0009] In some embodiments, notches are provided at the four corners of the forming plate, and the shape and size of the notches match those of the limiting blocks. During the downward movement of the forming plate, the notches at its four corners correspond to and are adapted to the limiting blocks of the forming box. The limiting blocks pass through the notches to avoid mechanical interference between the forming plate and the limiting blocks. The matching of the notches with the limiting blocks eliminates the risk of collision between the forming plate and the limiting blocks and avoids wear of the forming plate or the limiting blocks due to interference.

[0010] In some embodiments, the side wall of the forming box is provided with an exhaust hole extending along its height direction, the length of which is equal to or greater than the stroke length of the rebound plate moving up and down; when the rebound plate moves up and down, the internal space of the forming box is connected to the outside through the exhaust hole, avoiding the air pressure difference caused by the closed space formed by the movement of the rebound plate, preventing negative pressure from hindering the upward movement of the rebound plate or positive pressure from affecting the forming of the blank; the exhaust hole ensures the air pressure balance inside the forming box, avoiding local deformation of the corrugated paper blank caused by air pressure difference.

[0011] In some embodiments, a pusher assembly is also provided on one side of the pressing and forming assembly. The pusher assembly includes a pusher seat fixed to the top of the base frame. The top of the pusher seat is provided with a pusher plate that slides back and forth on its upper surface. A pusher cylinder is provided on one side of the pusher plate and drives it. After the spring plate pushes the formed workpiece out of the forming box, the pusher cylinder drives the pusher plate to slide along the upper surface of the pusher seat, pushing the workpiece out of the forming box from the opening side of the forming box, thus completing the workpiece transfer. The pusher assembly cooperates with the pressing and forming assembly to realize the automated transfer of the formed workpiece, replacing manual handling.

[0012] In some implementations, the pusher seat and the forming box are at the same height, and the bottom surface of the pusher plate is in contact with the upper surface of the pusher seat; the pusher seat and the forming box are at the same height, so there is no height difference when the workpiece is transferred from the forming box to the pusher seat, avoiding workpiece tilting; the pusher plate and the pusher seat slide in contact, reducing the up-and-down shaking of the workpiece during the pushing process; the pusher seat and the forming box are at the same height, preventing the workpiece from falling due to height difference; the pusher plate and the pusher seat are in contact, reducing the amount of shaking when the workpiece is pushed.

[0013] In some embodiments, there are two pusher cylinders, and a synchronization valve is provided between the two pusher cylinders to control their start and stop synchronously. The synchronization valve controls the air intake and exhaust rhythm of the two pusher cylinders to ensure that the extension and retraction of the two cylinders are completely synchronized, so that the two ends of the pusher plate are subjected to balanced force and slide smoothly in a straight line along the upper surface of the pusher seat, thereby improving the reliability of the transfer.

[0014] In some implementations, the clearance between the pusher plate and the pusher seat is no more than 0.3 mm to reduce the shaking when the pusher plate slides. The sliding direction of the pusher plate extends along the opening side of the forming box, and its maximum sliding stroke is at most half the width of the forming box.

[0015] The beneficial effects of this utility model are as follows: the workpiece is automatically ejected by the cooperation of the rebound plate and the rebound spring, which solves the problem of difficult part removal in traditional forming boxes; the limit block and the limit groove cooperate to ensure that the blank force surface is flat during forming, thereby improving the forming accuracy; the guide rod and the guide sleeve enhance the stability of the rebound plate movement and avoid skewing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the molding box of this utility model;

[0018] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the picture:

[0020] 2. Uprights; 3. Top frame; 4. Base frame;

[0021] 5. Press forming assembly; 51. Pressure plate cylinder; 52. Forming pressure plate; 53. Forming box; 531. Exhaust hole; 532. Limiting block; 54. Spring plate; 541. Limiting groove; 55. Guide rod; 56. Guide sleeve; 57. Spring spring;

[0022] 6. Pushing assembly; 61. Pushing seat; 62. Pushing cylinder; 63. Pushing plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a corrugated carton forming machine, including a support frame, a pressing forming component 5 and a pushing component 6. The support frame includes a top frame 3 and a bottom frame 4, which are arranged vertically opposite each other. Multiple columns 2 are fixedly connected between them. The columns 2 are evenly distributed along the edges of the top frame 3 and the bottom frame 4 to provide stable support for the top frame 3, avoid structural displacement caused by vibration during equipment operation, provide a basic guarantee for the precise extrusion of the subsequent pressing forming component 5, and reduce the forming size deviation caused by frame shaking.

[0025] The pressing and forming assembly 5 is mounted on the top of the base frame 4 and is the core component for extruding and forming corrugated paper blanks. It includes a forming box 53, which is a rectangular box structure with an open top and is fixed on the base frame 4. Limiting blocks 532 are fixedly installed at the four corners of the top of the inner side wall. The limiting blocks 532 are rectangular block structures. At the same time, the side wall of the forming box 53 has vent holes 531 extending along its height direction. The length of the vent holes 531 is not less than the stroke length of the subsequent spring plate 54 moving up and down. There are 8 vent holes 531 evenly distributed along the side wall of the forming box 53. The 8 evenly distributed vent holes 531 can more efficiently balance the air pressure inside the forming box 53, avoid negative pressure obstruction or positive pressure causing local deformation of the blank when the spring plate 54 moves up and down, significantly improve the surface flatness of the workpiece after forming, and reduce the forming defects caused by air pressure problems.

[0026] The spring plate 54 is a rectangular plate that matches the shape and size of the inner cavity of the forming box 53. It is set inside the forming box 53, and its outer peripheral wall slides with the inner side wall of the forming box 53. It can move up and down along the inner wall of the forming box 53. The top four corners of the spring plate 54 are provided with limiting grooves 541 that correspond one-to-one with the limiting blocks 532 and are mating. When the limiting blocks 532 are fully embedded in the limiting grooves 541, the upper surface of the spring plate 54 is flush with the upper end face of the forming box 53. This mating design can ensure that the blank is flat during forming and avoid uneven force on the blank caused by the positional displacement of the spring plate 54. At least two guide rods 55 are vertically fixed at the bottom of the spring plate 54. The guide rods 55 are symmetrically distributed along the center line of the spring plate 54. The symmetrically distributed guide rods 55 can ensure that the spring plate 54 is not skewed when moving up and down, further improving the forming accuracy and making it easier to control the dimensional deviation of corrugated paper forming.

[0027] A guide sleeve 56 is fixed on the base frame 4 at the position corresponding to the guide rod 55. The guide sleeve 56 is adapted to the guide rod 55. The end of the guide rod 55 away from the spring plate 54 slides through the guide sleeve 56. The sliding cooperation between the guide rod 55 and the guide sleeve 56 can further enhance the stability of the movement of the spring plate 54. A spring spring 57 is provided between the upper part of the guide sleeve 56 and the lower part of the spring plate 54. The spring spring 57 is sleeved on the outside of the guide rod 55, and its two ends abut against the top of the guide sleeve 56 and the bottom of the spring plate 54, respectively. The spring spring 57 can automatically push the spring plate 54 upward after molding, and drive the molded workpiece to detach from the bottom of the molding box 53, realizing the automatic ejection of the workpiece. There is no need for manual insertion into the box to pick it out, which completely solves the pain point of difficult part removal in traditional molding machines and greatly shortens the part removal time.

[0028] A pressure plate cylinder 51 is fixedly mounted at the bottom of the top frame 3, corresponding to the position of the forming box 53. The telescopic end of the pressure plate cylinder 51 is set vertically downward, and a forming pressure plate 52 is fixedly connected to its telescopic end. The pressure plate cylinder 51 replaces manual pressure application, providing stable and uniform extrusion force, avoiding the difference in blank forming caused by uneven manual force application. The forming pressure plate 52 is a rectangular plate that matches the shape and size of the inner cavity of the forming box 53. It can extend into the forming box 53 under the drive of the pressure plate cylinder 51. This adaptive design ensures that the blank is subjected to consistent force in all parts, improving the consistency of batch production. Notches 521 are opened at the four corners of the forming pressure plate 52. The notches 521 are adapted to the shape and size of the limiting blocks 532 on the forming box 53 to avoid the limiting blocks 532, preventing the forming pressure plate 52 from colliding with the limiting blocks 532 when it moves down, reducing component wear, and extending the service life of the equipment.

[0029] The pusher assembly 6 is located on one side of the pressing and forming assembly 5 and is used to transfer the formed corrugated paper workpiece from the forming box 53 to a preset area. It includes a pusher seat 61, which is a rectangular plate structure fixed to the top of the base frame 4. The upper surface of the pusher seat 61 is at the same height as the upper end face of the forming box 53. This height consistency design ensures that there is no height difference when the workpiece is transferred from the forming box 53 to the pusher seat 61, preventing the workpiece from tilting or falling and ensuring the stability of the transfer process. A pusher plate 63 is located on top of the pusher seat 61, and its bottom surface slides against the upper surface of the pusher seat 61. The clearance between the two is no more than 0.3mm. This clearance reduces the shaking of the pusher plate 63 during sliding, ensuring the workpiece is stable during the pushing process and preventing edge damage due to offset. The pusher plate 63 can slide back and forth along the upper surface of the pusher seat 61, with its sliding direction extending along the opening side of the forming box 53. The maximum sliding stroke is half the width of the inner cavity of the forming box 53. Two pusher cylinders 62 are fixed on the side of the pusher seat 61 away from the forming box 53. The two pusher cylinders 62 are distributed at intervals along the sliding direction of the pusher plate 63. The extension and retraction ends of the pusher cylinders 62 are set towards the forming box 53, and their extension and retraction ends are fixedly connected to the side wall of the pusher plate 63. A synchronization valve is connected between the two pusher cylinders 62 through a pipe. The synchronization valve is used to control the start, stop and extension and retraction of the two pusher cylinders 62 synchronously. The design of the double pusher cylinders 62 and the synchronization valve can ensure that the two ends of the pusher plate 63 are subjected to balanced force and slide smoothly in a straight line, avoiding the tilting of the pusher plate 63 that may be caused by the single cylinder drive. At the same time, the pusher cylinders 62 drive replaces manual transfer, reduces manual intervention, improves overall work efficiency, and, together with the automatic ejection of the rebound plate 54, forms an automated process from forming to ejection and finally to transfer, reducing labor costs.

[0030] Working principle and usage process of this utility model:

[0031] During the blank placement stage, the operator lays the multi-layer corrugated paper blanks to be processed flat on the upper surface of the spring plate 54. At this time, the spring spring 57 is in a naturally extended state, the spring plate 54 is located at the initial high position in the forming box 53, and the blank is stably placed on the spring plate 54.

[0032] After the equipment is started during the extrusion molding stage, the telescopic end of the pressure plate cylinder 51 extends downward, driving the forming pressure plate 52 to move vertically downward. Since the forming pressure plate 52 is compatible with the inner cavity shape and size of the forming box 53, and the notches 521 at the four corners of the forming pressure plate 52 correspond to the limiting blocks 532 of the forming box 53, the forming pressure plate 52 can extend into the forming box 53 without interference and contact the upper surface of the corrugated paper blank. As the pressure plate cylinder 51 continues to apply pressure, the forming pressure plate 52 applies uniform pressure to the blank, pushing the blank and the spring plate 54 to move downward along the inner wall of the forming box 53. At this time, the guide rod 55 slides synchronously along the guide sleeve 56 to ensure that the downward direction of the spring plate 54 is stable. The spring spring 57 is compressed, and the forming pressure plate 52 continues to maintain the preset pressure for a period of time. The pressure is adjusted according to the number of corrugated paper layers, and the corrugated paper blank is extruded and molded in the forming box 53.

[0033] The telescopic end of the pressure plate cylinder 51 retracts upward, driving the forming pressure plate 52 to move upward, disengage from the forming box 53 and return to the initial position. At this time, the compression state of the return spring 57 is released, and it extends upward under the action of elastic force, pushing the return plate 54 to move upward along the inner side wall of the forming box 53. The guide rod 55 moves upward synchronously along the guide sleeve 56 to ensure that the return plate 54 moves upward smoothly. At the same time, the exhaust hole 531 on the side wall of the forming box 53 balances the air pressure inside the forming box 53 in real time, avoiding the negative pressure formed by the upward movement of the return plate 54 from hindering its movement. Until the upper surface of the return plate 54 is flush with the upper end surface of the forming box 53, the return plate 54 stops moving upward. The formed corrugated paper workpiece is disengaged from the bottom of the forming box 53 along with the return plate 54, completing the automatic ejection.

[0034] The synchronous valve controls the telescopic ends of the two pusher cylinders 62 to extend synchronously, driving the pusher plate 63 to slide along the upper surface of the pusher seat 61 toward the forming box 53. Since the pusher seat 61 and the forming box 53 are at the same height, and the pusher plate 63 slides in close contact with the pusher seat 61, the pusher plate 63 can smoothly contact the formed corrugated paper workpiece and push the workpiece out from the opening side of the forming box 53 and transfer it to the preset area of ​​the pusher seat 61. When the pusher plate 63 moves to the maximum stroke, the telescopic end of the pusher cylinder 62 retracts, driving the pusher plate 63 to reset to the initial position, waiting for the next transfer action, and completing the entire work cycle.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrugated cardboard box forming machine, comprising a top frame (3) and a bottom frame (4), wherein multiple columns (2) are provided between the top frame (3) and the bottom frame (4) for support, characterized in that, The base frame (4) is provided with a pressing forming assembly (5), which includes a forming box (53). The forming box (53) is provided with a spring plate (54) that slides back and forth along its inner sidewall. A guide rod (55) is fixed to the bottom of the spring plate (54). A guide sleeve (56) is fixed to the base frame (4) and sleeved on the guide rod (55). The upper part of the guide sleeve (56) and the lower part of the spring plate (54) abut against each other. A spring (57) is sleeved on the outside of the guide rod (55). Limiting blocks (532) are installed at the four corners of the top of the molding box (53). Limiting grooves (541) that mate with the limiting blocks (532) are opened at the four corners of the top of the spring plate (54). When the limiting blocks (532) are fully inserted into the limiting grooves (541), the upper surface of the molding box (53) and the upper surface of the spring plate (54) are on the same horizontal plane.

2. The corrugated cardboard box forming machine according to claim 1, characterized in that, The pressing and forming assembly (5) also includes a pressure plate cylinder (51) mounted on the top frame (3). The extension and retraction end of the pressure plate cylinder (51) is fixed with a forming pressure plate (52). The shape and size of the forming pressure plate (52) match those of the forming box (53).

3. A corrugated cardboard box forming machine according to claim 2, characterized in that, The forming plate (52) is also provided with notches (521) at the four corners, and the notches (521) are matched with the shape and size of the limiting block (532).

4. A corrugated cardboard box forming machine according to claim 1, characterized in that, The side wall of the molding box (53) is provided with an exhaust hole (531) extending along its height direction. The length of the exhaust hole (531) is equal to or greater than the stroke length of the spring plate (54) moving up and down.

5. A corrugated cardboard box forming machine according to claim 1, characterized in that, The pressing forming assembly (5) is also provided with a pusher assembly (6) on one side. The pusher assembly (6) includes a pusher seat (61) fixed to the top of the base frame (4). The top of the pusher seat (61) is provided with a pusher plate (63) that slides back and forth on its upper surface. The pusher plate (63) is provided with a pusher cylinder (62) that drives it.

6. A corrugated cardboard box forming machine according to claim 5, characterized in that, The pusher seat (61) is at the same height as the forming box (53), and the bottom surface of the pusher plate (63) is in contact with the upper surface of the pusher seat (61).

7. A corrugated cardboard box forming machine according to claim 5, characterized in that, There are two pusher cylinders (62), and a synchronization valve is provided between the two pusher cylinders (62) to control their start and stop synchronously.

8. A corrugated cardboard box forming machine according to claim 5, characterized in that, The clearance between the pusher plate (63) and the pusher seat (61) is no more than 0.3 mm to reduce the shaking when the pusher plate (63) slides. The sliding direction of the pusher plate (63) extends along the opening side of the forming box (53), and its maximum sliding stroke is at most half the width of the forming box (53).

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