A packaging bag roll changing device
Patent Information
- Application Number
- CN202521883416.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-02
AI Technical Summary
[0003]现有的换卷装置在使用时，通常都是通过收卷辊将包装袋进行收卷工作，但在实际使用时，收卷辊在收卷时很快就会将包装袋收卷满，此时需要操作人员停机对收卷辊进行更换，降低了换卷装置的工作效率
该包装袋换卷装置，实现了通过对称设置的放置板一与放置板二，配合驱动气缸二控制的活动板，满卷后可快速切换至空收卷辊，无需长时间停机，换卷时间缩短至30秒以内，生产效率提升20%-30%，导向辊保证包装袋输送路径稳定，调节板与驱动气缸三组成的张力调节机构可实时调整张力，有效避免包装袋褶皱、拉伸变形，电动导轨带动切割刀沿包装袋宽度方向灵活移动，从而快速便捷的将包装袋进行切割，减少原料浪费。
Smart Images
Figure CN224831456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of roll changing devices, specifically a packaging bag roll changing device. Background Technology
[0002] A packaging bag is a bag-shaped container used to package goods. It is usually made of materials such as plastic, paper, and cloth. The processing includes raw material preparation, melt plasticizing, extrusion molding, cooling and shaping, cutting, and inspection. During the production of packaging bags, a roll-changing device is needed to wind and store the packaging bags.
[0003] Existing roll changing devices typically use take-up rollers to roll up packaging bags. However, in actual use, the take-up rollers quickly fill up the packaging bags during the roll-up process, requiring operators to stop the machine and replace the take-up rollers, which reduces the working efficiency of the roll changing device.
[0004] Therefore, we urgently need to provide a packaging bag roll changing device. Utility Model Content
[0005] The purpose of this invention is to provide a packaging bag roll changing device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a packaging bag roll changing device, comprising a frame, a housing, and a cutting blade. A drive motor is installed inside the housing. The output end of the drive motor is connected to a smooth roller via a belt. The smooth roller is rotatably mounted on the frame. An electric guide rail is fixedly mounted on one side of the frame. A sliding block is slidably connected to the electric guide rail. A fixing plate is fixedly connected to the sliding block. A drive cylinder is fixedly mounted on one side of the frame. The piston rod end of the drive cylinder is connected to one side of the fixing plate via a movable pin. The frame is also equipped with a second placement plate and a take-up roller. The take-up roller can be selectively installed on either the first or the second placement plate. A movable plate is provided on one side of the second placement plate, and a second drive cylinder is connected to the movable plate. The second drive cylinder is fixed to the frame. A guide roller is installed on the side of the frame away from the electric guide rail. The guide roller is correspondingly arranged with the smooth roller. A second fixed plate is also provided on the frame. A guide rail is slidably connected to the bottom of the second fixed plate. A third drive cylinder is installed on the second fixed plate. An adjusting plate is slidably connected to the top of the second fixed plate.
[0007] A further improvement is that the surface roughness of the smooth roller is ≤ Ra0.8, and the axis of the smooth roller is parallel to the axis of the take-up roller.
[0008] A further improvement is that the extension direction of the electric guide rail is consistent with the axial direction of the smooth roller, and the cutting blade has a serrated edge, which enables the packaging bag to be cut quickly and conveniently, thereby enabling better winding.
[0009] A further improvement is that both the first and second placement plates are provided with arc-shaped slots that fit the end of the take-up roller, and the two are symmetrically arranged in the middle of the frame, which enables better roll changing and thus better use.
[0010] A further improvement is that the side of the adjusting plate facing the packaging bag has an arc-shaped contact surface, and a silicone pad is attached to the arc-shaped contact surface. The curvature of the arc-shaped contact surface is adapted to the curvature of the smooth roller. A pressure plate is movably connected to one side of the adjusting plate, which can better guide and transport the packaging bag, and thus better perform the winding operation.
[0011] A further improvement is that the first, second, and third drive cylinders are all single-rod double-acting cylinders, and their extension and retraction speeds can be adjusted by a throttle valve.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This packaging bag roll changing device enables rapid switching to an empty take-up roller after a full roll is completed, through symmetrically arranged placement plates one and two, and a movable plate controlled by drive cylinder two. This eliminates the need for prolonged downtime, reducing roll changing time to less than 30 seconds and increasing production efficiency by 20%-30%. Guide rollers ensure stable bag conveying path, and the tension adjustment mechanism composed of adjustment plate and drive cylinder three can adjust tension in real time, effectively preventing bag wrinkles and stretching deformation. The electric guide rail drives the cutting blade to move flexibly along the width of the bag, thus quickly and conveniently cutting the bag and reducing material waste. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a side view of the structure of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This utility model Figure 4 A magnified structural diagram at point A in the diagram.
[0014] In the diagram: 1. Frame; 2. Chassis; 3. Drive motor; 4. Belt; 5. Smooth roller; 6. Electric guide rail; 7. Sliding block; 8. Fixed plate one; 9. Cutting blade; 10. Drive cylinder one; 11. Placement plate one; 12. Take-up roller; 13. Drive cylinder two; 14. Movable plate; 15. Placement plate two; 16. Fixed plate two; 17. Drive cylinder three; 18. Adjusting plate; 19. Guide roller. Detailed Implementation
[0015] 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.
[0016] Please see Figures 1-5 This utility model provides a technical solution: A packaging bag roll changing device includes a frame 1, a housing 2, and a cutting blade 9. A drive motor 3 is installed inside the housing 2. The output end of the drive motor 3 is connected to a smooth roller 5 via a belt 4. The smooth roller 5 is rotatably mounted on the frame 1. An electric guide rail 6 is fixedly mounted on one side of the frame 1. A sliding block 7 is slidably connected to the electric guide rail 6, and a fixing plate 8 is fixedly connected to the sliding block 7. A drive cylinder 10 is fixedly mounted on one side of the frame 1. The piston rod end of the drive cylinder 10 is movably connected to one side of a placement plate 11 via a movable pin. A second placement plate 15 is also provided on the frame 1. The take-up roller 12 can be selectively installed on the placement plate 11 or the placement plate 2 15. The placement plate 2 15 has a movable plate 14 on one side, and the movable plate 14 is connected to the drive cylinder 2 13. The drive cylinder 2 13 is fixed on the frame 1. The side of the frame 1 away from the electric guide rail 6 is equipped with a guide roller 19, which is correspondingly set with the smooth roller 5. The frame 1 is also equipped with a fixed plate 2 16. The bottom of the fixed plate 2 16 is slidably connected to a guide rail. The fixed plate 2 16 is equipped with a drive cylinder 3 17, and the top of the fixed plate 2 16 is slidably connected to an adjusting plate 18. The surface roughness of the smooth roller 5 is ≤ Ra0.8, and the axis of the smooth roller 5 is parallel to the axis of the take-up roller 12; The extension direction of the electric guide rail 6 is consistent with the axial direction of the smooth roller 5, and the blade of the cutting blade 9 is serrated, which enables the packaging bag to be cut quickly and conveniently, and thus enables better winding. Both placement plate 11 and placement plate 2 15 are provided with arc-shaped slots that fit the end of the take-up roller 12, and the two are symmetrically arranged in the middle of the frame 1, so as to better perform the roll changing work and thus better use. The side of the adjusting plate 18 facing the packaging bag has an arc-shaped contact surface, and a silicone pad is attached to the arc-shaped contact surface. The curvature of the arc-shaped contact surface is adapted to the curvature of the smooth roller 5. A pressure plate is movably connected to one side of the adjusting plate 18, so that the packaging bag can be better guided and conveyed, and thus better rolled up. Drive cylinder 10, drive cylinder 2 13 and drive cylinder 3 17 are all single-rod double-acting cylinders, and their extension and retraction speeds can be adjusted by a throttle valve.
[0017] Working principle: The packaging bag raw material roll to be rolled is installed on the unwinding mechanism at the front end of the production line. The free end of the packaging bag passes through the gap of the guide roller 19 in sequence, then around the surface of the smooth roller 5, and finally winds onto the winding roller 12 in the arc-shaped slot of the placement plate 11. At this time, by rotating the fixing bolt on the adjusting plate 18, it can be moved within the inner wall of the adjusting plate 18. The movement of the fixing bolt allows it to be pulled out from the fixing plate 16, thereby canceling the limiting fixation of the adjusting plate 18. This allows for quick and convenient adjustment of the position of the adjusting plate 18, which in turn can guide and limit packaging bags of different widths. A pressure plate is movably connected to the adjusting plate 18. When the winding operation is performed, the pressure plate presses on the packaging bag, thereby guiding and limiting the packaging bag. Start the drive motor 3. The drive motor 3 drives the smooth roller 5 to rotate at a speed of 10-15 r / min through the belt 4. The friction between the smooth roller 5 and the packaging bag drives the packaging bag to be conveyed towards the winding roller 12. The winding roller 12 rotates synchronously with the winding of the packaging bag to complete the winding. During the winding process, if wrinkles are observed in the packaging bag, the controller will activate the drive cylinder 17. If the tension is too low (wrinkles), the piston rod will extend and push the adjusting plate 18 to increase the pressure on the packaging bag and increase the tension. If the tension is too high (stretching), the piston rod will retract to reduce the pressure and lower the tension, thus maintaining a stable tension in real time. When the winding diameter of the take-up roller 12 reaches the set value (e.g., 300mm), the production line control system sends a roll change signal, and the speed of the drive motor 3 drops to 5r / min (low-speed conveying). Start the electric guide rail 6. The sliding block 7 drives the fixed plate 8 and the cutting blade 9 to move along the electric guide rail 6 until the cutting blade 9 is aligned with the preset cutting position of the packaging bag (50mm from the edge of the winding roller 12). Then the electric guide rail 6 stops running. Start the second drive cylinder 13, the piston rod retracts, thereby controlling the movable plate 14 to swing on the frame 1. The swing of the movable plate 14 can drive the two placement plates 15 connected by the second movable rod to swing, thereby quickly and conveniently adjusting the empty take-up roller on the placement plate 15 to the take-up angle. The free end of the cut packaging bag is rewound onto the empty take-up roller of plate 2 15, and the drive motor 3 is restored to normal speed to start the next round of take-up operation. Meanwhile, the piston rod of the synchronously working drive cylinder 10 extends, controlling the placement plate 11 to swing on the frame 1. The swing of the placement plate 11 drives the take-up roller 12 to move, thereby adjusting the take-up roller 12 to an angle that is easy to pick up, disassemble and replace it, thus enabling the roll to be changed without stopping the machine.
[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A packaging bag roll changing device, comprising a frame (1), a housing (2), and a cutting blade (9), characterized in that: The machine housing (2) is equipped with a drive motor (3). The output end of the drive motor (3) is connected to a smooth roller (5) via a belt (4). The smooth roller (5) is rotatably mounted on the frame (1). An electric guide rail (6) is fixedly mounted on one side of the frame (1). A sliding block (7) is slidably connected to the electric guide rail (6). A fixing plate (8) is fixedly connected to the sliding block (7). A drive cylinder (10) is fixedly mounted on one side of the frame (1). The piston rod end of the drive cylinder (10) is movably connected to one side of the placement plate (11) via a movable pin. The frame (1) is also equipped with a placement plate (15) and a take-up roller (12). 2) It can be selectively installed on the placement plate one (11) or the placement plate two (15). The placement plate two (15) has a movable plate (14) on one side. The movable plate (14) is connected to the drive cylinder two (13). The drive cylinder two (13) is fixed on the frame (1). The frame (1) is equipped with a guide roller (19) on the side away from the electric guide rail (6). The guide roller (19) is correspondingly arranged with the smooth roller (5). The frame (1) is also equipped with a fixed plate two (16). The bottom of the fixed plate two (16) is slidably connected to the guide rail. The fixed plate two (16) is equipped with a drive cylinder three (17). The top of the fixed plate two (16) is slidably connected to an adjustment plate (18).
2. The packaging bag roll changing device according to claim 1, characterized in that: The surface roughness of the smooth roller (5) is ≤ Ra0.8, and the axis of the smooth roller (5) is parallel to the axis of the take-up roller (12).
3. The packaging bag roll changing device according to claim 1, characterized in that: The extension direction of the electric guide rail (6) is consistent with the axial direction of the smooth roller (5), and the cutting blade (9) has a serrated edge.
4. The packaging bag roll changing device according to claim 1, characterized in that: Both the first placement plate (11) and the second placement plate (15) are provided with arc-shaped slots that are adapted to the end of the take-up roller (12), and the two are symmetrically arranged in the middle of the frame (1).
5. A packaging bag roll changing device according to claim 1, characterized in that: The side of the adjusting plate (18) facing the packaging bag is an arc-shaped contact surface, and a silicone pad is pasted on the arc-shaped contact surface. The curvature of the arc-shaped contact surface is adapted to the curvature of the smooth roller (5). A pressure plate is movably connected to one side of the adjusting plate (18).
6. The packaging bag roll changing device according to claim 1, characterized in that: The drive cylinder one (10), drive cylinder two (13) and drive cylinder three (17) are all single-rod double-acting cylinders, and their extension and retraction speeds can be adjusted by a throttle valve.