Paper bag edge finishing structure for roll bag machine

Abstract

The utility model discloses a kind of paper bag edge straightening structure of reel making bag machine, relate to paper bag edge straightening equipment technical field, including bag making machine edge straightening platform, bag making machine edge straightening platform is provided with big drum wheel support plate, big drum wheel support plate is rotatably provided with big drum wheel by drum wheel axle, the downside of big drum wheel support plate is provided with a plurality of edge straightening roller matched with big drum wheel, and edge straightening roller is rotatably connected with big drum wheel support plate by pivot, reduction motor one is provided on big drum wheel support plate.The utility model fundamentally changes the rigid collision between the two into flexible contact by giving closing rod certain activity allowance and supplemented with spring buffer, greatly reduces the impact between closing rod and guard bar, significantly prolongs the service life of closing rod, eliminates the quality risk that closing rod surface is pressed out wrinkle, scratch or indentation due to wear, guarantees the flatness and appearance quality after paper bag edge straightening, effectively improves the qualified rate of product.

Description

Technical Field

[0001] This utility model relates to the technical field of paper bag edge trimming equipment, specifically a paper bag edge trimming structure for a roll bag making machine. Background Technology

[0002] In the paper bag manufacturing process, after the roll bag making machine completes the basic forming of the paper bag, it is often necessary to perform overall pressing and edge trimming on the finished paper bag to enhance the fit and overall flatness of the paper bag, and improve the appearance quality and performance of the product.

[0003] This edge-trimming process is typically achieved through the coordinated operation of a large drum and a closing bar structure within the equipment. Specifically, the pre-formed paper bag is conveyed by a conveyor to a continuously rotating large drum. To ensure the paper bag rotates stably with the large drum and enters the subsequent edge-trimming station, a pair of guard strips are used to pre-tighten the two sides of the paper bag to the surface of the large drum. The closing bar is mounted on a drive shaft and rotates regularly with the shaft. Its function is to press the paper bag tightly against the large drum at specific stations, thereby using friction to reliably drive the large drum to move the paper bag forward, ultimately guiding the paper bag between the large drum and multiple edge-trimming rollers for pressing and edge trimming.

[0004] However, existing technologies still have shortcomings in use: First, the commonly used guard strips are made of metal, which, while pre-tightening the paper bag, also mechanically interfere with the periodically rotating closing bar. Since the guard strips are mostly made of hard iron, the closing bar frequently impacts the guard strips during the rotation and pressing process, easily leading to wear, deformation, or damage to the surface of the closing bar. This structural defect not only reduces the service life of the closing bar but also causes uneven pressure distribution when pressing the paper bag due to surface damage, resulting in quality problems such as indentations, wrinkles, or scratches on the paper bag surface. Second, the spacing between the two guard strips in existing equipment is usually a fixed structure, which cannot be flexibly adjusted according to actual production needs. This limitation makes it difficult for the edge-trimming equipment to adapt to paper bag products of different widths, seriously restricting the utilization rate of the equipment, and the problem is particularly prominent in flexible production scenarios with multiple specifications and small batches. Utility Model Content

[0005] The technical problem this utility model aims to solve is to overcome existing defects and provide a paper bag edge-trimming structure for a roll bag making machine. By giving the closing bar a certain amount of mobility and supplementing it with spring buffer, the rigid collision between the two is fundamentally transformed into a flexible contact, which greatly reduces the impact between the closing bar and the guard strip, significantly extends the service life of the closing bar, eliminates the quality risk of wrinkles, scratches or indentations on the paper bag due to wear on the surface of the closing bar, ensures the flatness and appearance quality of the paper bag after edge trimming, effectively improves the product qualification rate, and can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paper bag edge-trimming structure for a roll bag making machine, comprising an edge-trimming platform, a large drum support plate on the edge-trimming platform, a large drum rotatably mounted on the large drum support plate via a drum shaft, a plurality of edge-trimming rollers cooperating with the large drum on the lower side of the large drum support plate, and the edge-trimming rollers being rotatably connected to the large drum support plate via a rotating shaft, a reduction motor being mounted on the large drum support plate, and the output shaft of the reduction motor being fixedly connected to the end of the drum shaft, and a transmission shaft rotatably mounted on the edge-trimming platform via a fixed plate, the fixed plate also housing the reduction motor. Second, the output shaft of the second geared motor is fixedly connected to the end of the transmission shaft. The large drum support plate is provided with a guard strip adjustment assembly. The guard strip adjustment assembly is provided with two guard strips that cooperate with the large drum. The transmission shaft is provided with a fixed frame. A movable frame is movably provided on the side of the fixed frame. A closing rod is rotatably provided on the side of the movable frame facing the large drum through a movable shaft, and the closing rod cooperates with the large drum. Several buffer posts are provided on the side of the movable frame facing the fixed frame. The buffer posts penetrate the fixed frame, and the ends of the buffer posts are provided with anti-detachment caps. The part of the buffer post between the fixed frame and the movable frame is provided with an elastic element.First, adjust the spacing between the two guard strips according to the width of the paper bag. Turning the handwheel drives the double-ended screw, which in turn moves the two adjusting blocks along the guide column in opposite directions until the two guard strips are precisely pressed against the two edges of the paper bag. This allows for rapid adaptation to paper bags of different widths, greatly improving equipment utilization. Gear motor one drives the large drum to rotate continuously and uniformly via the drive drum shaft. Simultaneously, gear motor two drives the fixed frame on its transmission shaft to rotate regularly. The finished paper bag is conveyed from the previous process equipment to the surface of the uniformly rotating large drum. The pre-tension force of the guard strips "holds" the paper bag tightly against the large drum, causing it to rotate with the drum for reliable conveying. As the transmission shaft rotates, the fixed frame drives the closing bar to rotate. The closing bar presses down on the center of the paper bag, ensuring it adheres to the surface of the large drum and stable conveying. When the closing bar presses against the paper bag, the movable frame, supported by the buffer column and springs,... The closing bar is provided with a slight backward buffer space. The preload of the spring ensures that the closing bar has a stable and gentle clamping force on the paper bag, which ensures the pressing effect and prevents damage to the paper bag due to excessive pressure. Finally, the paper bag enters between the large drum and the edge-aligning roller for pressing and edge alignment to enhance the fit and overall flatness of the paper bag. On the movement trajectory, the closing bar will pass the position of the guard strip. If interference occurs, the closing bar will contact the guard strip first. Since the guard strip is made of plastic and the closing bar is designed to be movable, the impact force of the collision will push the entire movable frame to move backward against the elasticity of the spring, that is, towards the fixed frame. After the collision, under the action of the spring restoring force, the movable frame and the closing bar quickly return to their original positions and continue to perform the pressing operation. This process transforms hard collision into soft contact, which greatly reduces the wear of the closing bar, significantly extends the service life of the closing bar, and eliminates the quality risk of the closing bar surface being damaged and pressing wrinkles, scratches, or indentations into the paper bag.

[0007] Furthermore, the guard strip adjustment assembly is an adjustment block set on the guard strip. A bidirectional screw and a guide post are horizontally arranged on the side of the large drum wheel, penetrating the adjustment block. The two ends of the bidirectional screw are threaded to the two adjustment blocks respectively through two sections of threads in opposite directions. The end of the guide post is fixedly connected to the large drum wheel support plate through an adjustment plate. The bidirectional screw penetrates the adjustment plate and is rotatably connected to the adjustment plate through a bearing.

[0008] Furthermore, two guide posts are provided, and both guide posts penetrate the adjusting block. The two guide posts can enhance the stability of the adjusting block during movement.

[0009] Furthermore, the guard strip has a smooth surface and is made of plastic. The use of plastic for the guard strip prevents scratches that might occur when the closing bar comes into rigid contact with it.

[0010] Furthermore, friction belts are provided on the periphery of both ends of the large drum to cooperate with the edging roller. The friction belts can enhance the friction between the large drum and the edging roller, allowing the large drum to drive the edging roller to rotate more effectively.

[0011] Furthermore, a handwheel is provided at the end of the bidirectional screw. The handwheel increases the turning radius, making it easier to rotate.

[0012] Furthermore, the elastic element is a spring, and the spring is movably sleeved on the buffer column in the part between the fixed frame and the movable frame.

[0013] Furthermore, a soft, wear-resistant pad is provided on the side of the guard strip facing the large drum. The soft, wear-resistant pad can effectively reduce damage to the closing bar caused by the guard strip.

[0014] Based on the above technical solution, the beneficial effects achieved by the paper bag edge-trimming structure of the roll bag making machine of this utility model through practical application are as follows: 1. This utility model utilizes the cooperation between the movable frame, spring, and buffer column to give the closing bar a certain amount of mobility and supplement it with spring buffer, fundamentally transforming the rigid collision between the two into flexible contact. This greatly reduces the impact between the closing bar and the guard strip, significantly extends the service life of the closing bar, eliminates the quality risk of wrinkles, scratches, or indentations on the paper bag due to wear on the surface of the closing bar, ensures the flatness and appearance quality of the paper bag after edge trimming, and effectively improves the product qualification rate.

[0015] 2. This utility model utilizes the cooperation between the bidirectional screw and the adjusting block. The bidirectional screw drives the two adjusting blocks to move along the guide column in opposite or opposite directions until the two guard strips are pressed tightly against the two sides of the paper bag, so as to achieve rapid adaptation to paper bags of different widths and greatly improve the utilization rate of the equipment. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of the present invention.

[0017] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 3 This is a side view of the three-dimensional structure of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the present invention viewed from below.

[0020] Figure 5 This is a three-dimensional structural diagram of the paper bag during use when the paper bag is pressed and trimmed.

[0021] In the diagram: 1-Bag making machine edge trimming platform, 2-Large drum support plate, 3-Large drum, 4-Friction belt, 5-Drum shaft, 6-Reduction motor one, 7-Rotating shaft, 8-Edge trimming roller, 9-Fixed plate, 10-Transmission shaft, 11-Reduction motor two, 12-Fixed frame, 13-Modible frame, 14-Closing bar, 15-Adjusting plate, 16-Handwheel, 17-Double screw, 18-Adjusting block, 19-Guide column, 20-Guard strip, 21-Modible shaft, 22-Buffer column, 23-Anti-detachment cap, 24-Spring. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5This embodiment provides a technical solution: a paper bag edge trimming structure for a roll bag making machine, including an edge trimming platform 1, a large drum support plate 2 on the edge trimming platform 1, a large drum 3 rotatably mounted on the large drum support plate 2 via a drum shaft 5, several edge trimming rollers 8 cooperating with the large drum 3 on the lower side of the large drum support plate 2, and the edge trimming rollers 8 rotatably connected to the large drum support plate 2 via a rotating shaft 7, a reduction motor 6 on the large drum support plate 2, and the output shaft of the reduction motor 6 fixedly connected to the end of the drum shaft 5, a transmission shaft 10 rotatably mounted on the edge trimming platform 1 via a fixed plate 9, a second reduction motor 11 on the fixed plate 9, and the output of the second reduction motor 11... The shaft is fixedly connected to the end of the drive shaft 10. A guard strip adjustment assembly is provided on the large drum wheel support plate 2. The guard strip adjustment assembly is provided with two guard strips 20 that cooperate with the large drum wheel 3. A fixed frame 12 is provided on the drive shaft 10. A movable frame 13 is movably provided on the side of the fixed frame 12. A closing rod 14 is rotatably provided on the side of the movable frame 13 facing the large drum wheel 3 through the movable shaft 21, and the closing rod 14 cooperates with the large drum wheel 3. Several buffer pillars 22 are provided on the side of the movable frame 13 facing the fixed frame 12. The buffer pillars 22 penetrate the fixed frame 12, and the end of the buffer pillar 22 is provided with an anti-detachment cap 23. An elastic element is provided on the part of the buffer pillar 22 between the fixed frame 12 and the movable frame 13.First, adjust the spacing between the two guard strips 20 according to the width of the paper bag. Turn the handwheel 16 to drive the double-sided screw 17 to rotate. The double-sided screw 17 drives the two adjusting blocks 18 to move along the guide post 19 in opposite directions until the two guard strips 20 are just pressed against the two sides of the paper bag. This achieves rapid adaptation to paper bags of different widths, greatly improving the utilization rate of the equipment. The first geared motor 6 drives the large drum 3 to rotate continuously and uniformly through the drive drum shaft 5. At the same time, the second geared motor 11 drives the fixed part on it through the drive transmission shaft 10. The fixed frame 12 rotates regularly, and the finished paper bags are conveyed from the previous process equipment to the surface of the uniformly rotating drum 3. The pre-tension force of the guard strip 20 "holds" the paper bag tightly to the drum 3, making it rotate with the drum 3 to achieve reliable conveying. As the drive shaft 10 rotates, the fixed frame 12 drives the closing bar 14 to rotate. The function of the closing bar 14 is to press down on the middle of the paper bag, making it fit against the surface of the drum 3 to ensure stable conveying. When the closing bar 14 presses against the paper bag, the movable frame 13 is supported by the buffer column 22 and the spring 24. The spring 24 provides a slight backward buffer space for the closing bar 14. The preload of the spring 24 ensures that the closing bar 14 exerts a stable and gentle clamping force on the paper bag, ensuring both the pressing effect and preventing damage to the paper bag due to excessive pressure. Finally, the paper bag enters between the large drum 3 and the edge-trimming roller 8 for pressing and edge trimming to enhance the fit and overall flatness of the paper bag. In its movement trajectory, the closing bar 14 will pass the position of the guard strip 20. If interference occurs, the closing bar 14 will contact the guard strip 20 first. Since the guard strip 20 is made of plastic... Furthermore, the closing bar 14 is designed to be movable. The impact force of the collision will push the entire movable frame 13 to move backward against the elastic force of the spring 24, that is, to move towards the fixed frame 12. After the collision, under the action of the restoring force of the spring 24, the movable frame 13 and the closing bar 14 quickly return to their original positions and continue to perform the pressing operation. This process transforms hard collision into soft contact, which greatly reduces the wear of the closing bar 14, significantly extends the service life of the closing bar 14, and eliminates the quality risk of the paper bag being wrinkled, scratched or indented due to wear on the surface of the closing bar 14.

[0024] Furthermore, the guard strip adjustment assembly is an adjustment block 18 set on the guard strip 20. A bidirectional screw 17 and a guide post 19 are horizontally arranged on the side of the large drum 3, which pass through the adjustment block 18. The two ends of the bidirectional screw 17 are threaded to the two adjustment blocks 18 respectively through two sections of threads in opposite directions. The end of the guide post 19 is fixedly connected to the large drum support plate 2 through the adjustment plate 15. The bidirectional screw 17 passes through the adjustment plate 15 and is rotatably connected to the adjustment plate 15 through the bearing.

[0025] Furthermore, two guide posts 19 are provided, and both guide posts 19 penetrate the adjusting block 18. The two guide posts 19 can enhance the stability of the adjusting block 18 when it moves.

[0026] Furthermore, the guard strip 20 has a smooth surface and is made of plastic. The use of plastic for the guard strip 20 prevents scratches that might occur to the closing rod 14 due to rigid contact with the guard strip 20.

[0027] Furthermore, friction belts 4 are provided on the periphery of both ends of the large drum 3 to cooperate with the edging roller 8. The friction belts 4 can enhance the friction between the large drum 3 and the edging roller 8, so that the large drum 3 can better drive the edging roller 8 to rotate.

[0028] Furthermore, a handwheel 16 is provided at the end of the bidirectional screw 17. The handwheel 16 increases the turning radius, making it easier to turn.

[0029] Furthermore, the elastic element is a spring 24, and the spring 24 is movably sleeved on the buffer post 22 at the part between the fixed frame 12 and the movable frame 13.

[0030] Furthermore, a soft, wear-resistant pad is provided on the side of the guard strip 20 facing the large drum 3. The soft, wear-resistant pad can effectively reduce the damage of the guard strip 20 to the closing rod 14.

[0031] The working principle of the paper bag edge-trimming structure for a roll bag making machine provided by this utility model is as follows: In use, firstly, adjust the spacing between the two guard strips 20 according to the width of the paper bag. Then, turn the handwheel 16 to drive the double-acting screw 17 to rotate. The double-acting screw 17 drives the two adjusting blocks 18 to move along the guide post 19 in opposite or opposing directions until the two guard strips 20 are precisely pressed against the two edges of the paper bag. This achieves rapid adaptation to paper bags of different widths, greatly improving the utilization rate of the equipment. The first geared motor 6 drives the large drum 3 to rotate continuously and uniformly through the drive drum shaft 5. Simultaneously, the second geared motor 11 drives the transmission shaft 10 to... The fixed frame 12 rotates regularly, and the finished paper bags are conveyed from the previous process equipment to the surface of the uniformly rotating drum 3. The pre-tension force of the guard strip 20 "holds" the paper bag tightly to the drum 3, making it rotate with the drum 3 to achieve reliable conveying. As the drive shaft 10 rotates, the fixed frame 12 drives the closing rod 14 to rotate. The function of the closing rod 14 is to press the middle of the paper bag, making it fit against the surface of the drum 3 to ensure stable conveying. When the closing rod 14 presses against the paper bag, the movable frame 13, with the buffer column 22 and spring 2... Supported by 4, the closing rod 14 is provided with a buffer space that allows it to slightly retract. The preload of the spring 24 ensures that the closing rod 14 has a stable and gentle clamping force on the paper bag, which ensures the pressing effect and prevents damage to the paper bag due to excessive pressure. Finally, the paper bag enters between the large drum 3 and the edge-trimming roller 8 for pressing and edge trimming to enhance the fit and overall flatness of the paper bag. On the movement trajectory, the closing rod 14 will pass the position of the guard strip 20. If interference occurs, the closing rod 14 will contact the guard strip 20 first. Since the guard strip 20 is made of plastic... Furthermore, the closing bar 14 is designed to be movable. The impact force of the collision will push the entire movable frame 13 to move backward against the elastic force of the spring 24, that is, towards the fixed frame 12. After the collision, under the action of the restoring force of the spring 24, the movable frame 13 and the closing bar 14 quickly return to their original positions and continue to perform the pressing operation. This process transforms hard collision into soft contact, which greatly reduces the wear of the closing bar 14, significantly extends the service life of the closing bar 14, and eliminates the quality risk of the paper bag being wrinkled, scratched, or dented due to wear on the surface of the closing bar 14.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A paper bag edge trimming structure for a roll bag making machine, comprising an edge trimming platform, a large drum support plate on the edge trimming platform, a large drum rotatably mounted on the large drum support plate via a drum shaft, a plurality of edge trimming rollers cooperating with the large drum on the lower side of the large drum support plate, and the edge trimming rollers being rotatably connected to the large drum support plate via a rotating shaft, a first reduction motor mounted on the large drum support plate, the output shaft of the first reduction motor being fixedly connected to the end of the drum shaft, a transmission shaft rotatably mounted on the edge trimming platform via a fixed plate, a second reduction motor mounted on the fixed plate, and the output shaft of the second reduction motor being fixedly connected to the end of the transmission shaft, characterized in that: The large drum wheel support plate is equipped with a guard strip adjustment assembly, which has two guard strips that cooperate with the large drum wheel. A fixed frame is provided on the drive shaft, and a movable frame is movably provided on the side of the fixed frame. A closing rod is rotatably provided on the side of the movable frame facing the large drum wheel through the movable shaft, and the closing rod cooperates with the large drum wheel. Several buffer posts are provided on the side of the movable frame facing the fixed frame. The buffer posts pass through the fixed frame, and the ends of the buffer posts are provided with anti-detachment caps. The part of the buffer post between the fixed frame and the movable frame is provided with an elastic element.

2. The paper bag edge trimming structure for a roll bag making machine according to claim 1, characterized in that: The guard strip adjustment assembly is an adjustment block set on the guard strip. A bidirectional screw and a guide post are horizontally arranged on the side of the large drum, penetrating the adjustment block. The two ends of the bidirectional screw are threaded to the two adjustment blocks respectively through two sections of threads in opposite directions. The end of the guide post is fixedly connected to the large drum support plate through an adjustment plate. The bidirectional screw penetrates the adjustment plate and is rotatably connected to the adjustment plate through a bearing.

3. The paper bag edge trimming structure for a roll bag making machine according to claim 2, characterized in that: There are two guide posts, and both guide posts pass through the adjustment block.

4. The paper bag edge trimming structure for a roll bag making machine according to claim 3, characterized in that: The protective strip has a smooth surface and is made of plastic.

5. The paper bag edge trimming structure for a roll bag making machine according to claim 4, characterized in that: The large drum wheel has friction belts at both ends that cooperate with the edge-aligning roller.

6. The paper bag edge-trimming structure for a roll bag making machine according to claim 5, characterized in that: A handwheel is provided at the end of the bidirectional screw.

7. The paper bag edge-trimming structure for a roll bag making machine according to claim 1, characterized in that: The elastic element is a spring, and the spring is movably sleeved on the buffer column in the part between the fixed frame and the movable frame.

8. The paper bag edge trimming structure for a roll bag making machine according to claim 1, characterized in that: The guard strip is equipped with a soft, wear-resistant pad.

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