Zipper bag processing roller
By setting an adjustable sliding sleeve on the pressure roller to form an avoidance groove, the problem of zipper damage in the processing of zipper packaging bags is solved, stable conveying and flattening are achieved, and the processing quality and debugging convenience are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YONGXIN STOCK (HUANGSHAN) PACKAGING CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-10
AI Technical Summary
Existing pressure rollers can easily cause squeezing damage to the zipper during the processing of zipper packaging bags, making the zipper difficult to open or causing damage, thus affecting processing quality and durability.
A pressure roller for processing zipper packaging bags was designed. By setting an adjustable first and second sliding sleeve on the drive shaft, an annular relief groove is formed to avoid direct compression of the zipper, ensuring that the zipper is located within the relief groove. The sliding sleeve is adjustable to adapt to different bag and zipper sizes.
It effectively avoids damage to zippers, improves processing quality and durability, simplifies the debugging process, reduces debugging costs and time, and adapts to the processing of zipper bags of different sizes and specifications.
Smart Images
Figure CN224477687U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging bag processing technology, specifically a pressure roller for processing zipper packaging bags. Background Technology
[0002] Zipper bags are flexible packaging bags with a reusable zipper closure. They are typically made of plastic film and are widely used in packaging for food, daily chemicals, pharmaceuticals, electronic components, and other industries.
[0003] The processing of zipper bags is mostly a continuous assembly line operation, and pressure rollers are one of the commonly used components in this process. For example, pressure rollers are used to roll the zipper bags to facilitate their transfer between different processes, and also to flatten the zipper bags after heat sealing.
[0004] Most current pressure rollers are constructed in a conventional cylindrical shape, as described in the text of Chinese Patent Publication No. CN216544976U entitled "A Conveying Device for a Zipper Bag Making Machine." While this cylindrical shape can convey zippered bags of different sizes, the zipper protrudes from the bag's surface. During actual conveying or flattening, the pressure roller's force is primarily applied to the zipper, causing significant compression damage. This leads to excessive compression of the zipper, making it difficult to open or even damaging the zipper. Therefore, a solution is urgently needed. Utility Model Content
[0005] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a pressure roller for processing zipper packaging bags. While ensuring stable conveying and flattening of zipper packaging bags of different sizes and structures, it also avoids damage to the zipper of the zipper packaging bag.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A pressure roller for processing zipper packaging bags includes a drive shaft. A first sliding sleeve and a second sliding sleeve are coaxially sleeved on the drive shaft and rotate synchronously with the drive shaft. The first sliding sleeve and the second sliding sleeve are arranged with a gap so that an annular relief groove that can accommodate a zipper is formed between their inner ends. Both the first sliding sleeve and the second sliding sleeve can be adjusted along the axial direction of the drive shaft so that the width of the relief groove and its position are adjustable along the axial direction of the drive shaft.
[0008] As a further embodiment of this utility model: the first sliding sleeve and the transmission shaft are locked together by a second locking member. A small shaft diameter sleeve is coaxially fixed to the inner end of the first sliding sleeve. The second sliding sleeve is coaxially sleeved on the small shaft diameter sleeve, and the two are locked together by the first locking member. The bottom of the clearance groove is formed by the outer peripheral surface of the small shaft diameter sleeve.
[0009] As a further embodiment of this utility model: the outer surface of the small diameter sleeve is fixed with a second flat key arranged along its axial direction, and the inner circumference of the second sliding sleeve is provided with a second keyway that is sleeved on the second flat key and forms a keyway with it.
[0010] As a further embodiment of this utility model: the outer surface of the transmission shaft is fixed with a first flat key arranged along its axial direction, and the inner circumference of the first sliding sleeve is provided with a first keyway that is sleeved on the first flat key and forms a keyway with it.
[0011] As a further embodiment of this utility model: the outer end of the small diameter sleeve protrudes to the outer side of the outer end of the second sliding sleeve, and the second locking member is arranged on the outer periphery of the protruding section of the small diameter sleeve, and the first locking member is arranged on the outer periphery of the second sliding sleeve near its outer end.
[0012] As a further embodiment of this utility model: the second locking member and the first locking member are respectively the second set screw and the first set screw.
[0013] As a further embodiment of this utility model: the second locking member includes a second threaded pin that can be radially inserted and penetrates into the inner cavity of the small diameter sleeve, and a second threaded hole that is threadedly screwed into the second threaded pin is provided on the transmission shaft. The first locking member includes a first threaded pin that can be radially inserted and penetrates into the second sliding sleeve, and a first threaded hole that is threadedly screwed into the first threaded pin is provided on the small diameter sleeve. The first threaded hole and the second threaded hole are both configured to be at least two evenly distributed along the axial direction of the transmission shaft.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. The outer circumferences of the first and second sliding sleeves respectively press the bag body located on both sides of the zipper in the zipper bag, achieving stable pressing or transmission of the bag body. The zipper of the zipper bag is located within the cavity of the clearance groove, preventing the bag body from being squeezed during pressing and transmission. This ensures that the zipper will not be difficult to open or even damaged due to excessive pressing, significantly improving the processing quality and durability of the zipper bag. The width of the clearance groove and its axial position along the drive shaft are adjustable, allowing for flexible adaptation to zipper bags of different sizes and zipper specifications.
[0016] Furthermore, even for zippered bags of the same size and zipper specifications, deviations in the bag's conveying path due to material installation or other intermediate steps can be resolved simply by adjusting the position of the clearance slot. This avoids the need for adjustments during feeding and other intermediate steps to align the zippered bag's zipper with the clearance slot, thus reducing adjustment costs and time.
[0017] 2. The second sliding sleeve is locked onto the first sliding sleeve. Therefore, when only the position of the clearance groove along the axial direction of the drive shaft is adjusted without adjusting the groove width, the unlocking and locking actions can be performed simply by using the second locking element on the first sliding sleeve. This not only improves the convenience of the adjustment process but also ensures that the groove width of the clearance groove remains consistent. This is especially beneficial when processing zipper bags of the same size and model, where the position adjustment of the clearance groove is needed when the conveying path deviates along the axis of the drive shaft during a new round of zipper bag processing.
[0018] 3. The keyway fit between the second sliding sleeve and the small diameter sleeve, and the keyway fit between the first sliding sleeve and the drive shaft, further ensure stable synchronous rotation between the second sliding sleeve and the small diameter sleeve, and stable synchronous rotation between the drive shaft and the first sliding sleeve, based on the locking of the first locking member and the second locking member. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model.
[0020] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0021] Figure 3 This is a schematic diagram of the left-side structure of this utility model.
[0022] In the figure: 10, drive shaft; 11, first flat key; 20, first sliding sleeve; 21, small diameter sleeve; 211, second flat key; 22, first keyway; 30, second sliding sleeve; 31, second keyway; 40, clearance groove; 50, first set screw; 60, second set screw. 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] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:
[0025] The specific structure of this utility model is as follows: Figure 1-3As shown, its main structure includes a drive shaft 10, on which a first sliding sleeve 20 and a second sliding sleeve 30 are coaxially sleeved, rotating synchronously with the drive shaft 10. The first sliding sleeve 20 and the second sliding sleeve 30 are spaced apart to form an annular clearance groove 40 between their inner ends, capable of accommodating a zipper. In actual implementation, the outer circumferences of the first sliding sleeve 20 and the second sliding sleeve 30 respectively press the bag body located on both sides of the zipper in the zipper bag, achieving stable pressing or transmission of the bag body. The zipper of the zipper bag is located within the cavity of the clearance groove 40, ensuring that the bag body is not squeezed during pressing and transmission, and preventing the zipper from being difficult to open or even damaged due to excessive pressing. Furthermore, both the first sliding sleeve 20 and the second sliding sleeve 30 can be adjusted axially along the drive shaft 10, so that the width and position of the clearance groove 40 are adjustable along the drive shaft 10. This ensures that the pressure roller can adapt to the pressing and conveying of zipper bags with different bag sizes and zipper sizes, ensuring the versatility of the pressure roller. In addition, even for zipper bags of the same size and model, since the material of the zipper bag starts from the feeding stage, there are intermediate stages such as folding and heat sealing. Due to the installation position of the material in the feeding and intermediate stages and the accuracy of the adjustment of each stage, the conveying path of the zipper bag may deviate to a certain extent along the axis of the drive shaft 10 when processing a new round of zipper bags. However, in this application, by adjusting the position of the clearance groove 40, even if the conveying path of the zipper bag deviates, only the position of the clearance groove 40 needs to be adjusted, avoiding the need to adjust the feeding and intermediate stages to align the zipper bag zipper with the clearance groove 40.
[0026] Based on the above, such as Figure 1 and Figure 2 As shown, the first sliding sleeve 20 is locked to the drive shaft 10 by the second locking member. The inner end of the first sliding sleeve 20 is coaxially fixed with a small shaft diameter sleeve 21. The second sliding sleeve 30 is coaxially sleeved on the small shaft diameter sleeve 21, and the two are locked together by the first locking member. The bottom of the clearance groove 40 is formed by the outer peripheral surface of the small shaft diameter sleeve 21. In contrast to the method where both the first sliding sleeve 20 and the second sliding sleeve 30 are independently locked to the drive shaft 10, in this application, the second sliding sleeve 30 is locked to the first sliding sleeve 20. Therefore, when only the position of the clearance groove 40 along the axial direction of the drive shaft 10 is adjusted without adjusting the groove width of the clearance groove 40, the unlocking and locking actions can be performed simply by using the second locking member on the first sliding sleeve 20. This not only improves the convenience of the adjustment process but also ensures that the groove width of the clearance groove 40 remains consistent. This is especially beneficial when processing zipper bags of the same size and model, where the position adjustment of the clearance groove 40 is needed when the conveying path deviates along the axis of the drive shaft 10 during a new round of zipper bag processing.
[0027] Based on the above, such as Figure 1 and Figure 3As shown, a second flat key 211 is fixed on the outer surface of the small diameter sleeve 21 and arranged along its axial direction. A second keyway 31 is provided on the inner circumference of the second sliding sleeve 30 and is sleeved on the second flat key 211 and forms a keyway with it. Thus, on the basis of locking by the first locking member, the synchronous rotation between the second sliding sleeve 30 and the small diameter sleeve 21 is further ensured.
[0028] Based on the above, such as Figure 1 and Figure 3 As shown, similarly, the outer surface of the drive shaft 10 is fixed with a first flat key 11 arranged along its axial direction, and the inner circumference of the first sliding sleeve 20 is provided with a first keyway 22 that is sleeved on the first flat key 11 and forms a keyway with it. Based on the locking of the second locking member, it is further ensured that the drive shaft 10 and the first sliding sleeve 20 rotate synchronously.
[0029] To further improve the ease of adjustment of the first sliding sleeve 20 and the second sliding sleeve 30, such as Figure 1 and 2 As shown, the outer end of the small diameter sleeve 21 protrudes to the outer side of the outer end of the second sliding sleeve 30, and the second locking member is arranged on the outer periphery of the protruding section of the small diameter sleeve 21. The first locking member is arranged on the outer periphery of the second sliding sleeve 30 near its outer end. During operation, whether sliding the first sliding sleeve 20 or the second sliding sleeve 30, locking and unlocking the first locking member and the second locking member can be done only at the outer end of the second sliding sleeve 30. The sliding of the first sliding sleeve 20 and the second sliding sleeve 30 only requires operating the second sliding sleeve 30 and the small diameter sleeve 21 protruding to the outer end of the second sliding sleeve 30 on the first sliding sleeve 20. There is no need for the operator to move back and forth along the axial direction of the transmission shaft 10, which improves the convenience of operating the first sliding sleeve 20 and the second sliding sleeve 30.
[0030] Based on the above, such as Figure 1 As shown, the second locking member and the first locking member are the second set screw 60 and the first set screw 50, respectively. The set screws are used to abut and lock, thereby locking and fixing the first sliding sleeve 20 and the second sliding sleeve 30. This not only ensures that the clearance groove 40 has a large adjustment range, but also has the advantages of convenient and quick operation.
[0031] Based on the above, the first and second locking components also have other embodiments. The second locking component includes a second threaded pin that can be radially inserted into the inner cavity of the small diameter sleeve 21. The drive shaft 10 has a second threaded hole that is threadedly engaged with the second threaded pin. The first locking component includes a first threaded pin that can be radially inserted into the second sliding sleeve 30. The small diameter sleeve 21 has a first threaded hole that is threadedly engaged with the first threaded pin. Both the first and second threaded holes are configured to be at least two evenly distributed along the axial direction of the drive shaft 10. Using the method of threaded pin and threaded hole insertion provides better locking stability of the first sliding sleeve 20 and the second sliding sleeve 30 in the axial direction. However, the adjustment accuracy is greatly affected by the position of the first and second threaded holes, and only a few fixed-size adjustments can be performed.
[0032] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0034] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.
Claims
1. A pressure roller for processing zipper packaging bags, characterized in that, Includes a drive shaft (10), on which a first sliding sleeve (20) and a second sliding sleeve (30) are coaxially sleeved and rotate synchronously with the drive shaft (10). The first sliding sleeve (20) and the second sliding sleeve (30) are arranged with a gap so that an annular relief groove (40) that can accommodate a zipper is formed between their inner ends. Both the first sliding sleeve (20) and the second sliding sleeve (30) can be adjusted along the axial direction of the drive shaft (10) so that the groove width of the relief groove (40) is adjustable and the position is adjustable along the axial direction of the drive shaft (10).
2. The pressure roller for processing zipper packaging bags according to claim 1, characterized in that, The first sliding sleeve (20) is locked to the transmission shaft (10) by a second locking member. The inner end of the first sliding sleeve (20) is coaxially fixed with a small shaft diameter sleeve (21). The second sliding sleeve (30) is coaxially sleeved on the small shaft diameter sleeve (21), and the two are locked together by the first locking member. The bottom of the clearance groove (40) is formed by the outer peripheral surface of the small shaft diameter sleeve (21).
3. The pressure roller for processing zipper packaging bags according to claim 2, characterized in that, The outer surface of the small shaft sleeve (21) is fixed with a second flat key (211) arranged along its axial direction, and the inner circumference of the second sliding sleeve (30) is provided with a second keyway (31) that is sleeved on the second flat key (211) and forms a keyway with it.
4. A pressure roller for processing zipper packaging bags according to claim 1, 2, or 3, characterized in that, The outer surface of the drive shaft (10) is fixed with a first flat key (11) arranged along its axial direction, and the inner circumference of the first sliding sleeve (20) is provided with a first keyway (22) that is sleeved on the first flat key (11) and forms a keyway with it.
5. A pressure roller for processing zipper packaging bags according to claim 2 or 3, characterized in that, The outer end of the small diameter sleeve (21) protrudes to the outer side of the outer end of the second sliding sleeve (30), and the second locking member is arranged on the outer periphery of the protruding section of the small diameter sleeve (21), and the first locking member is arranged on the outer periphery of the second sliding sleeve (30) near its outer end.
6. A pressure roller for processing zipper packaging bags according to claim 2 or 3, characterized in that, The second locking member and the first locking member are the second set screw (60) and the first set screw (50), respectively.
7. A pressure roller for processing zipper packaging bags according to claim 2 or 3, characterized in that, The second locking member includes a second threaded pin that can be radially inserted through the inner cavity of the small diameter sleeve (21), and a second threaded hole that is threadedly screwed into the second threaded pin is provided on the drive shaft (10). The first locking member includes a first threaded pin that can be radially inserted through the second sliding sleeve (30), and a first threaded hole that is threadedly screwed into the first threaded pin is provided on the small diameter sleeve (21). The first threaded hole and the second threaded hole are both configured to be at least two evenly distributed along the axial direction of the drive shaft (10).