A high-precision corrugated cardboard forming device

Abstract

This utility model relates to the field of corrugated cardboard forming technology and discloses a high-precision corrugated cardboard forming device, including a support platform. A conveying assembly is mounted on the top of the support platform, and a centering assembly is mounted on one side above the conveying assembly. The centering assembly includes a bracket, with a drive motor fixedly connected to the center of the top of the bracket. A main rocker arm is fixedly connected to the output end of the drive motor, and auxiliary rocker arms are rotatably connected to both ends of the main rocker arm. Symmetrical sliding plates are slidably connected to the outer walls of the guide rails on both sides, and linkage rods are fixedly connected to the left and right sides of the bottom of each sliding plate. In this utility model, the conveying rollers transport the corrugated cardboard coated with adhesive to the bracket. The drive motor causes the main rocker arm to rotate, driving the auxiliary rocker arms to pull the sliding plates towards the center. This causes the linkage rods to contact the side walls of the cardboard and converge the tilted cardboard, achieving the effect of centering and converging the cardboard. This solves the problem of cardboard tilting during transport, which can lead to forming failure, and improves the regularity and processing quality of the forming process.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard forming technology, and in particular to a high-precision corrugated cardboard forming device. Background Technology

[0002] In today's rapidly developing packaging industry, corrugated cardboard has become a core material for the transportation packaging of various goods due to its excellent cushioning properties and cost advantages. High-precision corrugated cardboard forming equipment focuses on solving precision challenges in key processes such as cardboard conveying and stacking, and thickness matching. Through optimized mechanical structure and coordinated operation, it ensures precise forming of cardboard during processes such as gluing and extrusion, meeting the stringent precision requirements of industries such as electronics and precision instruments, and driving the upgrading of corrugated cardboard production towards high efficiency and precision.

[0003] Traditional corrugated cardboard forming equipment mostly relies on simple conveyor roller sets to transport cardboard, and uses a fixed-gap extrusion mechanism to achieve forming. The conveying process uses a motor-driven belt and sprocket to rotate the conveyor rollers and transport the cardboard; the extrusion forming uses extrusion rollers set at fixed intervals, and based on the combination of roller surface pressure and conveying power, pressure is applied to the cardboard to complete the corrugation shape. It relies on a rigid mechanical structure to ensure the basic forming process, and uses conventional mechanical transmission and pressure application logic to achieve the processing and transformation of cardboard from raw paper to finished product.

[0004] Existing equipment for conveying corrugated cardboard suffers from a lack of precise alignment and control mechanisms. This makes the cardboard susceptible to tilting and shifting during conveying due to variations in conveyor roller speed and initial position deviations. Consequently, uneven stress occurs during subsequent extrusion forming, leading to problems such as corrugation deformation and misalignment during bonding. Furthermore, the fixed-gap extrusion rollers are difficult to adapt to cardboard of different thicknesses, easily resulting in crushing or poor bonding due to pressure mismatch. This severely restricts forming accuracy and product quality stability. Therefore, a high-precision corrugated cardboard forming device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-precision corrugated cardboard forming device, which aims to improve the problem of existing cardboard being prone to tilting during transport, leading to forming failure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-precision corrugated cardboard forming device includes a support platform, a conveying component is provided on the top of the support platform, a centering component is provided on one side above the conveying component, and an extrusion component is provided on the other side above the conveying component.

[0008] The centering component includes a bracket, with its bottom sides fixedly connected to the top sides of the support platform. A drive motor is fixedly connected to the center of the top of the bracket, and a main rocker arm is fixedly connected to the output end of the drive motor. The main rocker arm is located at the top of the inner wall of the bracket, and auxiliary rocker arms are rotatably connected to both ends of the main rocker arm. Symmetrical guide rails are fixedly connected to the top of the inner wall of the bracket, and symmetrical sliding plates are slidably connected to the outer walls of the guide rails on both sides. A fixed column is fixedly connected to the center of the bottom of each guide rail, and the other end of the auxiliary rocker arm is rotatably connected to the outer wall of the fixed column. Linkage rods are fixedly connected to the left and right sides of the bottom of the sliding plate.

[0009] As a further description of the above technical solution:

[0010] The conveying assembly includes multiple conveying rollers arranged in a linear array inside the support platform. Both ends of each conveying roller are rotatably connected to both sides of the support platform, and a drive wheel is fixedly connected to one side of each of the multiple conveying rollers.

[0011] As a further description of the above technical solution:

[0012] The bottom of the support platform is provided with multiple support legs, which are distributed in a rectangular array, and the tops of the multiple support legs are fixedly connected to the bottom of the support platform.

[0013] As a further description of the above technical solution:

[0014] The extrusion assembly includes multiple extrusion rollers arranged in an array above the support platform. A limiting circular plate is fixedly connected to one side of each extrusion roller, and a transmission wheel is fixedly connected to the other side of each extrusion roller.

[0015] As a further description of the above technical solution:

[0016] The left and right ends of the extrusion roller are rotatably connected to bearings, and the outer walls of the bearings are fixedly connected to sliders.

[0017] As a further description of the above technical solution:

[0018] The extrusion roller is provided with fixing blocks on the left and right sides. The bottom of the fixing blocks on both sides is fixedly connected to the top of the support platform. The fixing blocks on both sides are provided with sliding grooves inside.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the slider is slidably connected to the inner wall of the groove, and symmetrical limiting springs are provided above the slider.

[0021] As a further description of the above technical solution:

[0022] One end of the limiting spring is fixedly connected to the top of the inner wall of the slide groove, and the other end of the limiting spring is fixedly connected to the top of the slider.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the conveyor roller transports the corrugated cardboard coated with adhesive to the support. The drive motor makes the main rocker arm rotate, which drives the auxiliary rocker arm to pull the slide plate to the center. This causes the linkage rod to contact the side wall of the cardboard and gather the tilted cardboard, achieving the effect of centering and gathering the cardboard. This solves the problem of cardboard tilting during transport, which leads to forming failure, and improves the regularity of forming and processing quality.

[0025] 2. In this utility model, the extrusion roller and the conveying roller work together to extrude the cardboard into shape. At the same time, the upper surface of the cardboard pushes the extrusion roller upward, causing the bearings and sliders at both ends to move upward along the slide groove and squeeze the limiting spring. The spring's restoring force makes the extrusion roller fit against the upper surface of the cardboard, achieving the effect of adapting to different thicknesses. This solves the problem of poor compatibility of the extrusion roller with cardboard of different thicknesses and improves the stability of the forming process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a high-precision corrugated cardboard forming device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the support platform structure of a high-precision corrugated cardboard forming device proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the main rocker arm structure of a high-precision corrugated cardboard forming device proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the extrusion roller structure of a high-precision corrugated cardboard forming device proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the fixing block structure of a high-precision corrugated cardboard forming device proposed in this utility model.

[0031] Legend:

[0032] 1. Support platform; 2. Support leg; 3. Conveyor roller; 4. Drive wheel one; 5. Bracket; 6. Drive motor; 7. Main rocker arm; 8. Secondary rocker arm; 9. Fixed column; 10. Slide plate; 11. Guide rail; 12. Linkage rod; 13. Extrusion roller; 14. Limiting circular plate; 15. Drive wheel two; 16. Bearing; 17. Fixed block; 18. Slide groove; 19. Slider; 20. Limiting spring. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-3 This utility model provides an embodiment of a high-precision corrugated cardboard forming device, including a support platform 1. The support platform 1 is welded from steel plates and its surface is milled to be flat. It serves as the basic load-bearing structure of the device and is used to install conveying components, centering components, and extrusion components to ensure the precise positioning of each component. Multiple support legs 2, made of seamless steel pipes, are distributed in a rectangular array at the bottom of the support platform 1. The top of the support legs 2 is fixedly connected to the bottom of the support platform 1 by welding. Rubber shock-absorbing pads are installed at the bottom to support the entire device, reduce vibration during operation, and avoid affecting the cardboard forming accuracy.

[0035] The conveying assembly is used to convey corrugated cardboard blanks. Its multiple conveying rollers 3 are made of 45# steel, with a rubber anti-slip layer wrapped around the outer wall to prevent the cardboard from slipping during conveying. The length matches the width of the support platform 1 and they are distributed in a straight array inside the support platform 1. The two ends of the conveying rollers 3 are rotatably connected to the two sides of the support platform 1 through bearings 16. The continuous rotation realizes the continuous conveying of corrugated cardboard, providing stable conveying power for subsequent centering and extrusion forming. The multiple conveying rollers 3 are fixedly connected to a drive wheel 4 on one side by a key. The drive wheel 4 is made of gray cast iron HT200 and the rim is machined with anti-slip teeth. It is used to connect to the drive device through a belt to transmit power and drive the conveying rollers 3 to rotate synchronously.

[0036] The centering component is used to correct the offset during the cardboard conveying process. Its bracket 5 is welded from steel plates, and its bottom two sides are fixedly connected to the top two sides of the support platform 1 by bolts, forming a portal frame structure for installing the drive motor 6 and guide components. The drive motor 6, which is selected as a servo motor, is fixedly connected to the center position of the top of the bracket 5 by a flange. Its output end is connected by a key to transmit power, providing the drive source for the centering action. This is existing technology and will not be described in detail in this article. The main rocker arm 7, which is CNC machined from aluminum alloy and fixedly connected to the output end of the drive motor 6, is located at the top of the inner wall of the bracket 5. It is used to convert the rotational motion of the motor into the swinging motion of the auxiliary rocker arm 8. The auxiliary rocker arm 8, which is CNC machined from aluminum alloy and rotatably connected to both ends of the main rocker arm 7 by pins, is used to transmit the power of the main rocker arm 7 to the fixed column 9, realizing the synchronous action of the two side slides 10. The left and right symmetrical guide rails 11, which are fixedly connected to the top of the inner wall of the frame 5, are made of aluminum alloy extrusion molding and have an "I" shaped cross section. They are used to limit the movement direction of the slide plate 10 and ensure that the slide plate 10 slides smoothly in a straight line. The left and right symmetrical slide plates 10, which are slidably connected to the outer wall of the guide rails 11 on both sides, are injection molded from high-strength nylon and glass fiber material. The inner wall and the outer wall of the guide rail 11 form a clearance fit. They are used to install the linkage rod 12 and drive it to move synchronously. The fixed column 9, which is made of No. 45 steel, is fixedly connected to the bottom center of the guide rail 11 by welding. It is used to connect the secondary rocker arm 8 and the slide plate 10 and convert the swing of the secondary rocker arm 8 into the sliding of the slide plate 10. The linkage rods 12, which are fixedly connected to the left and right sides of the bottom of the slide plate 10 by bolts, are made of wear-resistant nylon material and have polyurethane wear-resistant pads installed at the ends. They are used to contact the side wall of the corrugated cardboard and avoid scratching the cardboard surface during the folding process.

[0037] Reference Figure 4 and Figure 5Multiple extrusion rollers 13, arranged in an array above the support platform 1, are made of 45# steel and have been hardened and chrome-plated. They are used to apply pressure to the corrugated cardboard to ensure strong adhesion between the cardboard layers. A limiting circular plate 14, made of Q235B steel and with a diameter larger than that of the extrusion roller 13, is fixedly connected to one side of the extrusion roller 13 by welding. This plate restricts the lateral displacement of the extrusion roller 13 and prevents it from shifting during the extrusion of the cardboard. A transmission wheel 15, made of gray cast iron HT200 and with toothed grooves on its rim, is fixedly connected to the other side of the extrusion roller 13 by a key. This wheel is used to connect to an external drive device via a belt to transmit rotational power to the extrusion roller 13. The outer walls of the left and right ends of the extrusion roller 13 are rotatably connected by an interference fit. The bearing 16, which is existing technology and will not be described in detail here, is used to reduce the frictional resistance of the extrusion roller 13 during rotation, ensuring smooth rotation. The outer wall of the bearing 16 is fixedly connected to the slider 19 through an transition fit. The slider 19 is made of aluminum alloy and CNC machined. The outer wall of the bearing 16 forms a clearance fit with the inner wall of the slide groove 18, which is used to support the extrusion roller 13 and realize its vertical displacement adjustment. The fixing blocks 17 on the left and right sides of the extrusion roller 13 are welded from Q235B steel plates. The bottom is fixedly connected to the top of the support platform 1 by bolts. They are used to install the slide groove 18 structure and provide overall support. The slide grooves 18, which are milled and have a rectangular cross section, are used to limit the movement direction of the slider 19 and ensure that the slider 19 slides vertically. The left and right symmetrical limit springs 20 above the slider 19 are made of spring steel. One end is welded to the spring seat at the top of the inner wall of the slide groove 18, and the other end is welded to the top of the slider 19. They are used to provide downward elastic force to the slider 19, ensuring that the extrusion roller 13 is always in contact with the surface of the corrugated cardboard.

[0038] Working principle: When using this corrugated cardboard forming device, multiple transmission wheels 4 are driven by belt to rotate, which in turn drives the conveyor roller 3 to rotate, conveying the corrugated cardboard coated with adhesive to the bottom of the support 5. At this time, the output end of the drive motor 6 drives the main rocker arm 7 to rotate. The rotation of the main rocker arm 7 drives the auxiliary rocker arms 8 at both ends to rotate as well. One end of the auxiliary rocker arm 8 pulls the fixed column 9 to move, so that the slide plates 10 on both sides slide towards the center on the guide rail 11. The displacement of the guide rail 11 then drives the linkage rods 12 on the left and right sides at the bottom to move towards the center as well. The linkage rods 12 contact the side wall of the corrugated cardboard, thereby bringing the tilted corrugated cardboard towards the center, thus achieving the effect of bringing the corrugated cardboard together and preventing the cardboard from tilting.

[0039] As the conveyor roller 3 continues to rotate, the corrugated cardboard in the center moves to the bottom of the extrusion roller 13. The belt drives the transmission wheel 15 to rotate, which in turn drives the extrusion roller 13 to rotate. The cooperation between the extrusion roller 13 and the conveyor roller 3 completes the extrusion effect of the corrugated cardboard, making the corrugated cardboard squeezed into shape. At the same time, the upper surface of the corrugated cardboard presses upward against the bottom of the extrusion roller 13, causing the extrusion roller 13 to move upward as a whole. The displacement of the extrusion roller 13 drives the bearings 16 and sliders 19 on its left and right sides to move upward within the grooves 18 inside the fixed block 17, thereby squeezing the limiting spring 20 at the top of the slider 19. At the same time, the restoring force of the limiting spring 20 also generates a downward force on the slider 19, making the bottom of the extrusion roller 13 tightly fit against the upper surface of the corrugated cardboard, thus achieving the effect of the extrusion roller 13 adapting to corrugated cardboard of different thicknesses.

[0040] Finally, it should be noted that the above description is only 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 high-precision corrugated cardboard forming device, comprising a support platform (1), characterized in that: The support platform (1) is provided with a conveying component on its top, a centering component is provided on one side above the conveying component, and an extrusion component is provided on the other side above the conveying component; The centering component includes a bracket (5), the bottom sides of which are fixedly connected to the top sides of the support platform (1). A drive motor (6) is fixedly connected to the center of the top of the bracket (5). A main rocker arm (7) is fixedly connected to the output end of the drive motor (6). The main rocker arm (7) is located at the top of the inner wall of the bracket (5). A secondary rocker arm (8) is rotatably connected to both ends of the main rocker arm (7). A left-right symmetrical guide rail (11) is fixedly connected to the top of the inner wall of the bracket (5). A left-right symmetrical sliding plate (10) is slidably connected to the outer wall of the guide rail (11) on both sides. A fixed column (9) is fixedly connected to the center of the bottom of the guide rail (11). The other end of the secondary rocker arm (8) is rotatably connected to the outer wall of the fixed column (9). A linkage rod (12) is fixedly connected to the left and right sides of the bottom of the sliding plate (10).

2. The high-precision corrugated cardboard forming device according to claim 1, characterized in that: The conveying assembly includes multiple conveying rollers (3), which are arranged in a linear array inside the support platform (1). Both ends of the conveying rollers (3) are rotatably connected to both sides of the support platform (1), and a drive wheel (4) is fixedly connected to one side of each of the multiple conveying rollers (3).

3. The high-precision corrugated cardboard forming device according to claim 2, characterized in that: The bottom of the support platform (1) is provided with multiple support legs (2), which are arranged in a rectangular array. The tops of the multiple support legs (2) are all fixedly connected to the bottom of the support platform (1).

4. The high-precision corrugated cardboard forming device according to claim 1, characterized in that: The extrusion assembly includes multiple extrusion rollers (13), which are arranged in an array above the support platform (1). A limiting circular plate (14) is fixedly connected to one side of the extrusion roller (13), and a transmission wheel (15) is fixedly connected to the other side of the extrusion roller (13).

5. The high-precision corrugated cardboard forming device according to claim 4, characterized in that: The outer walls of both ends of the extrusion roller (13) are rotatably connected to bearings (16), and the outer walls of the bearings (16) are fixedly connected to sliders (19).

6. The high-precision corrugated cardboard forming device according to claim 5, characterized in that: The extrusion roller (13) is provided with fixing blocks (17) on the left and right sides. The bottom of the fixing blocks (17) on both sides is fixedly connected to the top of the support platform (1). The fixing blocks (17) on both sides are provided with sliding grooves (18).

7. The high-precision corrugated cardboard forming device according to claim 6, characterized in that: The outer wall of the slider (19) is slidably connected to the inner wall of the groove (18), and a left-right symmetrical limiting spring (20) is provided above the slider (19).

8. The high-precision corrugated cardboard forming device according to claim 7, characterized in that: One end of the limiting spring (20) is fixedly connected to the top of the inner wall of the slide groove (18), and the other end of the limiting spring (20) is fixedly connected to the top of the slider (19).

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