Novel mold roller for magic tape production
By improving the mold roller structure, subdividing the mold sheet and changing the cavity hole direction, the hook surface on the Velcro belt is vertically upward, solving the problems of Velcro length and stickiness, and achieving infinitely long and stable Velcro production.
Patent Information
- Application Number
- CN202422278084.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing Velcro production mold rollers are difficult to produce long-length and stable tape-shaped Velcro, which leads to the problem of unsolid bonding of the hook surface and the wool surface after a long period of use, resulting in the problem of hanging items falling off.
The ring sheet set and central axis structure are adopted in a coaxial arrangement. By subdividing the mold sheet and changing the extension direction of the cavity hole, the "injection hook" is vertically upward. Combined with the design of the positioning pin and clamping disc, the mold sheet rotates simultaneously and the stability is formed to form an infinitely long Velcro belt.
It produces Velcro straps that can be lengthened at will and sticky for a long time, ensuring that the hook and the wool surface are firmly combined and preventing hanging items from falling off.
Smart Images
Figure CN223290131U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of Velcro production, and in particular to a new mold roller for Velcro production. Background Art
[0002] Velcro is a commonly used fastening mechanism in clothing. It typically has a "loop" or "hook" surface. The hooks engage the loops, securing the two parts of the Velcro together. During the Velcro production process, the hook and loop sides are manufactured separately.
[0003] The hook surface of Velcro is typically made of plastic. During the molding process, a specialized mold roller is typically used for Velcro production. Specifically, the plastic strip (held at a high temperature) used in Velcro production is pressed against the mold roller. Because the mold roller is porous, a series of "hooks" ("hairs") form on the plastic strip as it passes through it. Since the hooks are curved, it's difficult to create these curved pores directly on the mold roller's outer surface during production. Therefore, existing mold rollers are assembled from several ring segments. These ring segments are further divided into gapped and full segments, with gapped and full segments spaced apart. The gapped ring segments are circumferentially defined with several notches to create the micropores on the mold roller's outer surface.
[0004] The Velcro produced by the above method is a strip-shaped Velcro. If the Velcro is to be formed into a normally used size, it needs to be cut to form a Velcro of a specific size.
[0005] The inventors discovered the following drawbacks with the aforementioned related technologies: Large display venues, such as showrooms, require long Velcro strips. Once produced, these strips must be cut along their length to meet the required length requirements. However, this method of cutting and uncutting the Velcro strips results in a weak bond between the hook and loop surfaces after prolonged use, making it prone to falling off items hung on them. A new mold roller is urgently needed to produce Velcro strips that are longer and have more stable adhesion. Summary of the Invention
[0006] In order to produce a strip of Velcro with a longer length and more stable viscosity, the present application provides a new mold roller for Velcro production.
[0007] This application provides a new mold roller for Velcro production, which adopts the following technical solution:
[0008] A new mold roller for Velcro production includes several coaxially arranged ring sheet groups, a center axis and a positioning pin. The ring sheet group includes several coaxially arranged mold sheets, each of which is provided with a notch. The notches on two adjacent mold sheets are connected to each other. The notches on the ring sheet group form a mold cavity hole, and the positioning pin is passed through several of the mold sheets.
[0009] By adopting this technical solution, the traditional mold sheet is further subdivided into multiple coaxially arranged mold sheets, so that multiple notches collectively enclose a cavity for molding the "injection hook." Furthermore, the extension direction of the hook hair is changed. As a result, after the Velcro strip is processed and cut along its length, a "limited length" Velcro strip with the "injection hook" pointing vertically upward is obtained, making it suitable for installation and fixation in large exhibition halls and other display areas. Because the "injection hook" is completely vertically positioned, the Velcro with a "hair surface" can better hook the injection hook, and the injection hook can provide better support to overcome the product's own gravity.
[0010] Optionally, a spacer ring is provided between two adjacent ring sheet groups, the central axis and the positioning pin are both passed through the spacer ring, a positioning column is provided on the spacer ring, and a positioning hole for the positioning column to pass through is opened on the mold sheet.
[0011] By adopting the above technical solution, the "shooting hooks" on the Velcro can be spaced apart by providing the spacer ring. At the same time, when assembling the ring piece group, the ring piece group can be first fixed on the spacer ring, and then assembled with one spacer ring as a unit.
[0012] Optionally, a center sleeve for the center shaft to be sleeved is provided on the spacer ring, and the mold sheet is sleeved on the center sleeve.
[0013] By adopting the above technical solution and arranging the mold sheet on the center sleeve and the positioning column, it is difficult for the mold sheet and the spacer ring, and between two adjacent mold sheets, to rotate relative to each other in the circumferential direction.
[0014] Optionally, a guide section is provided at one end of the center sleeve away from the spacer ring, and an outer diameter of the guide section gradually increases from a side away from the spacer ring to a side close to the spacer ring.
[0015] By adopting the above technical solution and providing the guide section, it is convenient to place the mold sheet on the center sleeve.
[0016] Optionally, a positioning groove is provided on a side of the spacer ring away from the center sleeve, and the positioning groove on the spacer ring is used for the guide section of the adjacent spacer ring to be embedded.
[0017] By adopting the above technical solution, the guide section itself is only a part that guides the installation. After the mold sheet is installed, the mold sheet is not placed on the guide section itself. By embedding the guide section into the positioning groove, the guide section itself does not occupy the axial space of the mold roller, so that the mold sheet can be pressed against the spacer, making the entire mold roller structure more compact.
[0018] Optionally, a truncated cone section in a truncated cone shape is provided at the end of the positioning column, and the truncated cone section is used for insertion of the positioning hole, and the outer diameter of the truncated cone section gradually increases along the insertion direction of the mold sheet.
[0019] By adopting the above technical solution, the mold piece can be conveniently sleeved on the positioning column.
[0020] Optionally, a connecting groove is formed at one end of the spacer ring away from the positioning column, and the connecting groove on the spacer ring is used for the frustum segment on the adjacent spacer ring to be embedded.
[0021] By adopting the above technical solution, the frustum section itself does not occupy the axial length of the mold roller, so that the mold sheet can better abut against the spacer sheet, thereby making the structure of the mold roller more compact.
[0022] Optionally, two clamping discs are further included, and the two clamping discs are used to clamp the plurality of ring sheet groups, and the end surfaces of the clamping discs are provided with fixing holes for embedding positioning pins.
[0023] By adopting the above technical solution, the clamping disc, the positioning pin and the mold piece can maintain synchronous rotation.
[0024] Optionally, the center shaft includes a center section for the ring group and the spacer ring to slide and a driving section for the clamping disk to slide, the outer diameter of the driving section is smaller than the outer diameter of the center section, a driving key is integrally provided on the driving section, the clamping disk is provided with a driving key slot for the driving key to slide and embed, and a clamping nut is threadedly connected to the driving section and abuts against the clamping disk.
[0025] By adopting the above technical solution, the clamping disc, the positioning pin, the center shaft and the mold piece can maintain synchronous rotation.
[0026] Optionally, the clamping disc is provided with an abutment protrusion for abutting against the spacer ring.
[0027] By adopting the above technical solution and providing the abutment protrusion, the clamping disc can avoid direct abutment with the end of the central section, and a certain gap exists between the two, so that the clamping disc can better clamp the mold sheet.
[0028] In summary, this application includes at least one of the following beneficial technical effects:
[0029] 1. By further dividing a traditional mold sheet into multiple thinner mold sheets and changing the extension direction of the cavity hole, the extension direction of the "injection hook" on the Velcro tape can be changed. This results in a Velcro tape that can be extended as needed and with all the "injection hooks" extending upward, thus making the "infinite length" Velcro tape have better and longer-lasting adhesion.
[0030] 2. By setting the center sleeve and positioning column, the mold piece is rotated and positioned so that two adjacent mold pieces can be connected to each other, thus ensuring the formation of the cavity hole;
[0031] 3. By embedding both ends of the locating pin into the clamping disc, the clamping disc is key-connected to the center shaft, so that the clamping disc, locating pin, mold piece, spacer and center shaft can rotate synchronously, ensuring the stability of the mold roller rotation. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a structural schematic diagram of the mold roller and the extrusion roller in the embodiment of the present application.
[0033] Figure 2 It is a structural diagram of the ring plate group, spacer plate and positioning pin in the embodiment of the present application.
[0034] Figure 3 This is a schematic diagram of the arrangement structure of the "injected hooks" of the "infinitely long" Velcro processed by traditional mold rollers.
[0035] Figure 4 It is a schematic diagram of the arrangement structure of the "infinitely long" Velcro "injected hooks" processed by the mold roller of the present application.
[0036] Figure 5 It is a schematic diagram of the exploded structure of the ring plate group and the spacer plate in the embodiment of the present application.
[0037] Figure 6 It is a schematic diagram of the exploded structure of the ring segment group in the embodiment of the present application.
[0038] Figure 7 It is a cross-sectional view of the ring plate group in the embodiment of the present application.
[0039] Figure 8 It is a schematic diagram of the exploded structure of the clamping nut, central shaft, clamping disc and spacer in the embodiment of the present application.
[0040] Figure 9 This is a schematic diagram of the exploded structure of the clamping nut, central shaft, clamping disk and spacer in the embodiment of the present application from another perspective.
[0041] Explanation of the accompanying drawings: 1. Ring plate group; 11. Cavity hole; 12. Mold plate; 13. Notch; 14. Positioning hole; 2. Center axis; 21. Center section; 22. Drive section; 23. Drive key; 24. Clamping nut; 3. Locating pin; 4. Clamping disk; 41. Fixing hole; 42. Drive keyway; 43. Abutment protrusion; 5. Extrusion roller; 51. Extrusion gap; 6. Spacer ring; 61. Center sleeve; 611. Guide section; 62. Positioning column; 621. Cone section; 63. Positioning groove; 64. Connecting groove; 7. Velcro; 71. "Injection hook". DETAILED DESCRIPTION
[0042] The following is combined with Figure 1-9 This application is described in further detail.
[0043] The embodiment of the present application discloses a XXX.
[0044] Reference Figure 1 and Figure 2 The mold roller used in the production of new Velcro strips consists of several coaxially arranged ring segments 1, a central shaft 2, positioning pins 3, and two clamping plates 4. The ring segments 1 and the two clamping plates 4 are sleeved onto the central shaft 2. The clamping plates 4 are positioned on either side of the ring segments 1 to clamp the segments 1. The central shaft 2 is driven by a motor to rotate the ring segments 1. The ring segments 1 are provided with several cavity holes 11 for thermoplastic molding of the product.
[0045] Reference Figure 1 and Figure 2 When the mold roller used in the production of new Velcro is in operation, it needs to be used in conjunction with the extrusion roller 5. An extrusion gap 51 is formed between the extrusion roller 5 and the mold roller for the product tape to pass through. When the mold roller used in the production of new Velcro is in operation, the product tape is pulled and moved by the stretching and traction mechanism. The product tape is pressed against the mold roller and slides through the extrusion gap 51. Because the product tape is a plastic tape with a relatively high temperature, the product tape is easily deformed. When the product tape is pressed against the extrusion roller 5, the surface of the product tape is embedded in the mold cavity hole 11, thereby forming an "injection hook" on the surface of the product tape, that is, the "hook surface" of the Velcro is used to adhesively cooperate with the "wool surface" of the Velcro.
[0046] Reference Figure 2 、 Figure 6 and Figure 7 In this embodiment, the ring plate assembly 1 includes a plurality of coaxially arranged mold plates 12. Each mold plate 12 has a notch 13 formed therein. The notches 13 on adjacent mold plates 12 are interconnected, and the mold cavity 11 is formed by the notches 13 on the plurality of mold plates 12. In other words, the mold cavity 11 extends in the axial direction of the mold roller.
[0047] Reference Figure 4Because the product strip is long, once the "injected hooks" 71 on the strip are formed, they can be cut along its length, resulting in a narrow but "infinitely long" Velcro strip 7 suitable for use in large exhibition halls. When in use, this "infinitely long" Velcro strip ensures that all of the "injected hooks" 71 on the strip face upward. Compared to an arrangement where the "injected hooks" 71 face downward, left, or right, the upward extension of the "injected hooks" 71 allows the "hair surface" to better "catch" the "injected hooks" 71, thus preventing the product from falling off the infinitely long Velcro strip due to gravity. Infinite length refers to the ability to cut the Velcro strip to any desired length based on actual needs.
[0048] Reference Figure 3 The cavity hole 11 on the traditional mold roller can be formed by a ring piece. At this time, the extension direction of the cavity hole 11 is on a plane perpendicular to the central axis 2, that is, the extension direction of the cavity hole 11 is within the plane where the mold piece 12 is located. At this time, if the product strip is cut along the length, the extension direction of the "injection hook" of the obtained product is horizontally to the left or right, and it is impossible to make the "injection hook" 71 on the "infinite length" Velcro 7 strip extend upward. Therefore, compared with the traditional processing technology, the present application further subdivides the traditional ring piece into multiple mold pieces 12, and changes the extension direction of the cavity hole 11 and the "injection hook", so that the produced "infinite length" Velcro 7 strip has more lasting adhesion. It is worth noting that the Velcro 71 produced by the traditional mold roller can also be cut to produce a Velcro strip with the "injection hook" 71 extending upward, but the length is limited, and the maximum length can only be the axial length of the mold roller itself.
[0049] Reference Figure 2 and Figure 5 A spacer ring 6 is provided between two adjacent ring sheet groups 1, and the center shaft 2 and the positioning pin 3 are both inserted into the spacer ring 6. A center sleeve 61 for the center shaft 2 to pass through is integrally provided on the spacer ring 6, and the mold sheet 12 is sleeved on the center sleeve 61. A positioning column 62 is integrally provided on the spacer ring 6, and a positioning hole 14 for the positioning column 62 to pass through is provided on the mold sheet 12. When the mold sheet 12 is installed on the spacer ring 6, the positioning column 62 is inserted into the positioning hole 14, so that relative rotation between the two adjacent mold sheets 12 is not easy to occur, and relative rotation between the mold sheet 12 and the spacer ring 6 does not occur, so that the notches 13 on the two adjacent mold sheets 12 can be relatively connected, thereby forming a more accurate cavity hole 11.
[0050] Reference Figure 2 and Figure 5The end of the center sleeve 61 away from the spacer ring 6 is provided with a guide section 611, which is in the shape of a truncated cone. The outer diameter of the guide section 611 gradually increases from the side away from the spacer ring 6 to the side close to the spacer ring 6. The end of the positioning column 62 is also provided with a truncated cone section 621. This is to facilitate the sleeve of the mold sheet 12 on the center sleeve 61 and the positioning column 62. The end of the spacer ring 6 is provided with a positioning groove 63 for the guide section 611 on the adjacent spacer ring 6 to be embedded, so that the guide section 611 itself does not take up space and the mold sheet 12 can be pressed against the spacer ring 6. Similarly, the side of the spacer ring 6 away from the positioning column 62 is provided with a connecting groove 64 for the truncated cone section 621 on the adjacent spacer ring 6 to be embedded.
[0051] Reference Figure 2 When the ring sheet group 1 and the spacer ring 6 are all sleeved on the central shaft 2, the positioning pin 3 is passed through all the ring sheet groups 1 and the spacer ring 6 to further prevent the relative rotation between the mold sheet 12 and the spacer ring 6.
[0052] Reference Figure 8 and Figure 9 The mold roller used in the production of the new Velcro system also includes two clamping discs 4, one located on either side of the ring group 1 and the other on either side of the spacer ring 6. The two clamping discs 4 clamp the ring groups 1 by abutting against the spacer rings 6 on either side, thereby securing the mold pieces 12 in a tighter fit. It is worth noting that in this embodiment, there is one more spacer ring 6 than there are ring groups 1, and the spacer ring 6 at one end is not provided with the center sleeve 61 or the positioning post 62, thereby better abutting against the end face of the clamping disc 4.
[0053] Reference Figure 8 and Figure 9 The clamping disc 4 is provided with a fixing hole 41 for the end of the positioning pin 3 to pass through. The central shaft 2 includes a central section 21 for the ring group 1 and the spacer ring 6 to slide and sleeve, and a driving section 22 for the clamping disc 4 to slide and sleeve. The driving section 22 is located at both ends of the central section 21, and the outer diameter of the driving section 22 is smaller than the outer diameter of the central section 21. The outer wall of the driving section 22 is integrally provided with a driving key 23, and the inner ring wall of the clamping disc 4 is provided with a driving keyway 42 for the driving key 23 to slide and insert. In this way, the clamping disc 4, the central shaft 2, the positioning pin 3, the ring group 1 and the spacer ring 6 can rotate synchronously. The driving section 22 is also threadedly connected with a clamping nut 24 for abutting the end face of the clamping disc 4, so that the clamping disc 4 can be tightly pressed against the spacer ring 6. Among them, the side of the clamping disc 4 close to the spacer ring 6 is integrally provided with an abutting protrusion 43 for abutting against the spacer ring 6. Under the action of the clamping nut 24, when the clamping disc 4 abuts against the spacer ring 6 through the abutting protrusion 43, the end face of the clamping disc 4 does not abut against the end of the center segment 21, and there is a certain extrusion gap 51 between the two, so that the ring segment group 1 can be better clamped.
[0054] The embodiment of the present application discloses a novel mold roller for Velcro production, which operates as follows: by further subdividing a conventional mold sheet 12 into multiple thinner mold sheets 12 and changing the extension direction of the cavity hole 11, the extension direction of the "injection hook" 71 on the Velcro is changed. This allows a Velcro strip 7 of "infinite length" with all the injection hooks facing upward to be cut along its length, thereby improving the long-lasting adhesive properties of the Velcro strip 7. Simultaneously, the mold sheet 12 is rotationally limited by the positioning pins 3 and the spacer rings 6, allowing the notches 13 on the mold sheets 12 on the ring sheet assembly 1 to communicate with each other, thereby forming a precise and stable cavity hole 11.
[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A new mold roller for Velcro production, characterized by: The invention comprises a plurality of coaxially arranged ring sheet groups (1), a central axis (2) and a positioning pin (3), wherein the ring sheet group (1) comprises a plurality of coaxially arranged mold sheets (12), each of the mold sheets (12) being provided with a notch (13), the notches (13) on two adjacent mold sheets (12) being interconnected, the notches (13) on the ring sheet group (1) forming a mold cavity hole (11), and the positioning pin (3) passing through the plurality of mold sheets (12).
2. The mold roller for the production of new hook and loop tape according to claim 1, characterized in that: A spacer ring (6) is provided between two adjacent ring sheet groups (1), the central axis (2) and the positioning pin (3) are both passed through the spacer ring (6), a positioning column (62) is provided on the spacer ring (6), and a positioning hole (14) for the positioning column (62) to pass through is opened on the mold sheet (12).
3. The mold roller for producing the new hook and loop tape according to claim 2, characterized in that: The spacer ring (6) is provided with a center sleeve (61) for the center shaft (2) to be sleeved, and the mold sheet (12) is sleeved on the center sleeve (61).
4. The mold roller for the production of the new hook and loop tape according to claim 3, characterized in that: A guide section (611) is provided at one end of the center sleeve (61) away from the spacer ring (6), and the outer diameter of the guide section (611) gradually increases from the side away from the spacer ring (6) to the side close to the spacer ring (6).
5. The mold roller for producing the new hook and loop tape according to claim 4, characterized in that: A positioning groove (63) is provided on a side of the spacer ring (6) away from the center sleeve (61). The positioning groove (63) on the spacer ring (6) is used for the guide section (611) of the adjacent spacer ring (6) to be embedded.
6. The mold roller for the production of the new hook and loop tape according to claim 2, characterized in that: A truncated cone section (621) in the shape of a truncated cone is provided at the end of the positioning column (62). The truncated cone section (621) is used for insertion of the positioning hole (14). The outer diameter of the truncated cone section (621) gradually increases along the insertion direction of the mold sheet (12).
7. The mold roller for producing the new hook and loop tape according to claim 6, characterized in that: A connecting groove (64) is provided on one end of the spacer ring (6) away from the positioning column (62). The connecting groove (64) on the spacer ring (6) is used for the frustum section (621) on the adjacent spacer ring (6) to be embedded.
8. The mold roller for producing the new hook and loop tape according to claim 2, characterized in that: It also includes two clamping discs (4), which are used to clamp a plurality of the ring sheet groups (1). The end surfaces of the clamping discs (4) are provided with fixing holes (41) for the positioning pins (3) to be embedded.
9. The mold roller for producing the new hook and loop tape according to claim 8, characterized in that: The central shaft (2) includes a central section (21) for the ring set (1) and the spacer ring (6) to be slidably mounted, and a driving section (22) for the clamping disc (4) to be slidably mounted. The outer diameter of the driving section (22) is smaller than the outer diameter of the central section (21). A driving key (23) is integrally provided on the driving section (22). The clamping disc (4) is provided with a driving key groove (42) for the driving key (23) to be slidably embedded. A clamping nut (24) is threadedly connected to the driving section (22) and abuts against the clamping disc (4).
10. The mold roller for producing the new hook and loop tape according to claim 8, characterized in that: The clamping disc (4) is provided with an abutment protrusion (43) for abutting against the spacer ring (6).