Zipper semi-finished product and zipper
By connecting the injection molding part to the rear end face of the tooth in the zipper semi-finished product and setting an appropriate cutting surface during the cutting process, the problem of burrs after cutting of the zipper semi-finished product is solved, achieving a smoother user experience and a higher yield rate.
Patent Information
- Application Number
- CN202421470338.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-25
AI Technical Summary
Existing semi-finished zippers are prone to burrs during cutting, resulting in poor use of zippers and may be wired or scratched in the skin.
By connecting the injection molding part to the rear end face of the tooth and setting a rectangular or rounded cutting surface on the surface to be cut, after cutting the injection molding part is cut with a cutter, the burrs only exist at the end face of the tail of the tooth, and there are no burrs in other parts.
It effectively avoids the problem of burrs or scratches on the skin in the clothing fabric, and improves the smoothness and yield of the zipper.
Smart Images
Figure CN222737401U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of zippers, in particular to a semi-finished zipper and a zipper. Background Art
[0002] Zippers are connectors that connect or separate items by means of continuously arranged chain teeth, and are widely used in clothing, backpacks, suitcases, etc. Due to the characteristics of plastic materials, the teeth of plastic-steel zippers have low bonding strength, and zipper teeth often fall off, leak, or become brittle, which directly renders the product unusable and causes great inconvenience to users.
[0003] The semi-finished zipper is further processed to obtain a zipper. The semi-finished zipper in the prior art has the following defects: the injection molding part is connected to the head of the tooth, and the tooth head of the produced zipper and the injection molding part are inevitably burred after being cut and separated, making the zipper not smooth to use, and the tooth head with burrs can easily cause the fabric of clothing to snag or even scratch the skin. Therefore, a semi-finished zipper and a zipper are proposed to solve the above problems. Utility Model Content
[0004] The utility model aims to provide a semi-finished zipper and a zipper, which solves the technical problems that the zipper teeth of the existing semi-finished zipper cut by a special cutter have burrs, making the zipper not smooth to use, and the zipper with burrs is easy to cause clothing fabrics to be snagged or even scratch the skin.
[0005] To achieve the above object, the utility model provides a semi-finished zipper, comprising:
[0006] Cloth belts, wherein two of the cloth belts are symmetrically arranged, and a plurality of teeth are arranged in an array on one side of the two cloth belts;
[0007] A connecting column, two connecting columns are symmetrically arranged, and a plurality of injection molding parts are arranged in an array on one side of the connecting column. The injection molding parts are connected to the rear end face of the tooth, and the connection position between the injection molding parts and the rear end face of the tooth is the surface to be cut.
[0008] Preferably, a docking post is provided at one end of the injection molding part, the docking post is provided on one side of the cloth belt, and each of the docking posts is connected to one of the teeth.
[0009] Preferably, two docking posts are arranged at one end of the injection molding part, and the two docking posts arranged in the same injection molding part are respectively connected to two adjacent teeth, and each tooth is connected to one of the docking posts in the two adjacent injection molding parts.
[0010] Preferably, one end of the docking post is in a cone shape, and the tip of the cone is connected to the rear end surface of the tooth.
[0011] Preferably, the surface to be cut is set to be rectangular, and the ratio of the cross-sectional length of the surface to be cut to the cross-sectional length of the tooth portion is between 1:3-1:2, and the ratio of the cross-sectional width of the surface to be cut to the cross-sectional width of the tooth portion is between 1:3-1:2.
[0012] Preferably, one side of the surface to be cut is provided with a rounded corner, and the ratio between the diameter of the rounded corner and the cross-sectional length of the surface to be cut is between 1:5 and 1:3.
[0013] Correspondingly, the technical solution of the utility model further provides a zipper, comprising:
[0014] Cloth belts, wherein two of the cloth belts are symmetrically arranged, and a plurality of teeth are arranged in an array on one side of the two cloth belts;
[0015] The tooth comprises a cutting surface formed on a rear end surface of the tooth.
[0016] Preferably, the tooth further comprises: a main body, a tooth neck and a tooth head which are integrally arranged, the main body is connected to the cloth belt, the tooth head is elliptical, and the tooth neck is provided with a groove which is elliptical.
[0017] Preferably, a cylindrical ribbed portion is integrally provided on one side of the cloth tape, and the cylindrical ribbed portion is embedded in the main body portion.
[0018] Preferably, a tooth head groove is provided on the front end surface of the tooth head portion, and the tooth head groove passes through the tooth.
[0019] Compared with the above background technology, the semi-finished zipper provided by the present invention has the following beneficial effects:
[0020] The utility model connects the injection molding part with the connecting part, so that the burr only exists on the end face of the tail of the tooth, and there is no burr on the tooth head and other parts of the finished zipper, and the position of the burr is well hidden, thereby preventing the clothing fabric from being caught by the burr and causing snagging and the burr from scratching the skin. In addition, since there is no burr on the tooth head of the finished zipper, it can prevent friction or jamming between the two rows of teeth when they are meshed with each other, thereby improving the overall smoothness of the zipper, and the user can use it more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0022] Figure 1 A three-dimensional structural diagram of a semi-finished zipper provided by an embodiment of the utility model;
[0023] Figure 2 A top view of a semi-finished zipper provided by an embodiment of the utility model;
[0024] Figure 3 A left side view of a semi-finished zipper provided by an embodiment of the utility model;
[0025] Figure 4 A plan view showing the cooperation between the teeth and the injection molding part provided in the first embodiment of the utility model;
[0026] Figure 5 A schematic plan view of the connecting column after cooling provided by the first embodiment of the utility model;
[0027] Figure 6 A schematic plan view of the cooperation between the teeth and the injection molding part provided in the second embodiment of the utility model, wherein a represents the fixed end of the injection molding material in the connecting tube, and b represents the free end of the injection molding material in the connecting tube;
[0028] Figure 7 A schematic plan view of the cooperation between the teeth and the injection molding part provided in the third embodiment of the utility model;
[0029] Figure 8 A rear view of a tooth provided in an embodiment of the utility model;
[0030] Fig. 9 A top view of a tooth provided in an embodiment of the utility model.
[0031] Specifically, 1-connecting column; 2-feeding column; 3-injection part; 4-docking column; 5-tooth; 501-main body; 502-tooth neck; 503-tooth head; 504-tooth head groove; 6-cutting surface; 7-rounded corner; 8-cloth belt; 9-ribbed part. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0033] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0034] like Figure 1 As shown, a semi-finished zipper includes: a cloth tape 8 and a connecting post 1, teeth 5 and a connecting post 1.
[0035] There are two cloth belts 8, which are symmetrically arranged. A plurality of teeth 5 are arranged in an array on one side of the two cloth belts 8, and the teeth 5 are tightly combined with the cloth belts 8 during injection molding.
[0036] like Figure 2 and Figure 3 As shown, two connecting posts 1 are connected to a feed post 2, wherein the two connecting posts 1 are symmetrically arranged, and both the connecting posts 1 and the feed post 2 are formed by cooling the injection molding material before being transported to the tooth mold, and a plurality of injection molding parts 3 are arranged in an array on one side of the connecting post 1, and the injection molding part 3 is connected to the rear end face of the tooth 5, and the connection position between the injection molding part 3 and the rear end face of the tooth 5 is the surface to be cut. The surface to be cut is set at the rear end face of the tooth 5, and after the injection molding part 3 is cut off by a cutter, the burr only exists on the end face of the tail of the tooth 5, and there is no burr on the tooth head and other parts of the finished zipper, and the position of the burr is well hidden, thereby preventing the clothing fabric from being caught by the burr and snagging, and the burr scratching the skin.
[0037] Furthermore, since the injection molding portion 3 is connected to the rear end face of the tooth 5, during injection molding, the rear end portion of the tooth 5 is first formed and combined with the cloth tape 8, and then the front end portion of the tooth 5 is further formed, and the bonding force between the tooth 5 and the cloth tape 8 is enhanced. During injection molding, the injection molding quality of the tooth 5 will not be greatly affected by factors such as improper mold temperature control, insufficient pressure, or injection molding holding time, thereby reducing the phenomenon of missing teeth and falling off of the zipper, and effectively improving the yield rate of the zipper.
[0038] It should be noted that one row of teeth 5 is located on the left side of the connecting post 1 , and the other row of teeth 5 is located on the right side of the connecting post 1 . After being processed into a zipper, the two rows of teeth 5 respectively located on the two tapes 8 can mesh with each other.
[0039] like Figure 4 As shown, in the first embodiment of the utility model, a docking post 4 is provided at one end of the injection molding part 3, the docking post 4 is provided on one side of the cloth belt 8, and each docking post 4 is connected to a tooth 5. Preferably, the docking post 4 is connected to the center of the rear end surface of the tooth 5, and each docking post 4 is connected to a tooth 5. In this case, the material distribution of the tooth 5 formed by injection molding is more uniform, and the quality of the formed tooth 5 is better.
[0040] like Figure 5 and Figure 6As shown, in the second embodiment of the utility model, the docking column 4 is located at the edge of the rear end surface of the tooth 5, one end of the connecting column 1 is set as the fixed end a, and the other end of the connecting column 1 is set as the free end b. The connecting column 1 will pull the tooth 5 when it cools and shrinks during the molding process. When the docking column 4 is connected to the center position of the rear end surface of the tooth 5, the connecting column 1 will apply a force to the tooth 5 through the injection molding part 3 when it cools and shrinks during the molding process. The tooth 5 is pulled and twisted by a certain angle, resulting in the two rows of teeth 5 of the zipper being unable to align and mesh, affecting the normal use of the zipper. By connecting the docking post 4 to the edge position of the rear end face of the tooth 5, further, the docking post 4 located on the left part of the connecting post 1 is connected to the left edge of the rear end face of the tooth 5, and the docking post 4 located on the right part of the connecting post 1 is connected to the right edge of the rear end face of the tooth 5, that is, changing the position of the point of application of force when the connecting post 1 applies force to the tooth 5 through the injection molding part 3, when the connecting post 1 cools and shrinks during the molding process, the tooth 5 is avoided as much as possible from being pulled and driven, thereby improving the position accuracy of the tooth 5 after molding, ensuring that the two rows of teeth 5 of the zipper can be normally aligned and meshed, thereby improving the overall quality of the zipper.
[0041] like Figure 7 As shown, in the third embodiment of the utility model, two docking posts 4 are arranged at one end of the injection molding part 3, and two connecting posts 1 are symmetrically arranged. The two docking posts 4 arranged in the same injection molding part 3 are respectively connected to two adjacent teeth 5, and each tooth 5 is connected to one of the docking posts 4 in the two adjacent injection molding parts 3. In the process from hot melting to cooling of the teeth 5, due to the characteristics of thermal expansion and contraction, the teeth 5 will shrink toward the direction of the connecting post 1. The two docking posts 4 are respectively connected to the left and right edge positions of the rear end surface of the teeth 5. When the connecting post 1 cools and shrinks during the molding process, the teeth 5 can only move in parallel, limiting the teeth 5 from twisting to a certain angle, further ensuring the alignment between the two rows of teeth 5, and the finished zipper has better smoothness, thereby improving the overall quality of the zipper.
[0042] In one embodiment of the utility model, one end of the docking column 4 is cone-shaped, and the tip of the cone is connected to the rear end surface of the tooth 5, so that the injection molding part 3 and the tooth 5 are connected in a point shape, which is convenient for separating the tooth 5 and the injection molding part 3 by a cutter later.
[0043] It should be noted that the surface to be cut can be set to various shapes, such as square, round, and elongated strip, etc. Preferably, the surface to be cut is set to a rectangle, and the ratio of the cross-sectional length of the surface to be cut to the cross-sectional length of the rear end face of the tooth 5 is between 1:3-1:2, and the ratio of the cross-sectional width of the surface to be cut to the cross-sectional width of the rear end face of the tooth 5 is between 1:3-1:2. When a docking column 4 is provided on the end face of the connecting portion, preferably, the ratio between the cross-sectional length of the surface to be cut and the length of the rear end face of the tooth 5 is 1:2, and the ratio between the cross-sectional width of the surface to be cut and the width of the rear end face of the tooth 5 is 1:2. When a surface to be cut is provided on the rear end face of the tooth 5, preferably, the ratio between the cross-sectional length of the surface to be cut and the length of the rear end face of the tooth 5 is 1:3, and the ratio between the cross-sectional width of the surface to be cut and the width of the rear end face of the tooth 5 is 1:3. Under the condition that the cutter can smoothly separate the tooth 5 from the injection molding portion 3, the surface to be cut is expanded as much as possible, the feed amount per unit time during injection molding is large enough, the feeding efficiency is higher, the molding time of each part of the tooth is basically consistent, and the stability of the tooth 5 is better.
[0044] A rounded corner 7 is provided on one side of the surface to be cut, wherein the ratio of the diameter of the rounded corner 7 to the cross-sectional length of the surface to be cut is between 1:5 and 1:3. Preferably, the ratio of the diameter of the rounded corner 7 to the cross-sectional length of the surface to be cut is preferably 1:4. The square surface to be cut with the rounded corner 7 can adapt to the shape of the tail of the tooth 5, ensuring that the injection molded part 3 is easy to cut while having better smoothness after cutting, thereby effectively improving the smoothness of the tooth 5 and improving the overall quality of the zipper.
[0045] A zipper provided by the present invention comprises: two symmetrically arranged cloth tapes 8, and a plurality of teeth 5 are arranged in an array on one side of the two cloth tapes 8, wherein the teeth 5 comprise: a cutting surface 6, and the cutting surface 6 is formed on the rear end face of the teeth 5. Since the surface to be cut is arranged on the rear end face of the teeth 5, after the injection molding part 3 is cut off by a cutter, the burr only exists on the end face of the tail of the teeth 5, and the teeth 5 of the finished zipper do not have burrs on the tooth head and other parts, the position of the burr is well hidden, and the teeth 5 have good overall smoothness, which effectively prevents the clothing fabric from being caught by the burr to cause snagging and the burr from scratching the skin.
[0046] like Figure 8 and Fig. 9 As shown, the tooth 5 further includes: a main body 501, a tooth neck 502 and a tooth head 503 which are integrally arranged, the main body 501 is connected to the cloth tape 8, the tooth head 503 is elliptical, and the tooth neck 502 is provided with a groove which is elliptical. The tooth neck 502 and the tooth head 503 can mesh with each other, thereby ensuring the normal closing and opening of the zipper.
[0047] A cylindrical ribbed portion 9 is integrally provided on one side of the tape 8, and the cylindrical ribbed portion 9 is embedded in the main body 501. The ribbed portion 9 is integrally connected to the tape 8, and the ribbed portion 9 extends along the length direction of the tape 8. After the teeth 5 are formed, the bonding strength between the teeth 5 and the tape 8 is higher, which effectively reduces the phenomenon of missing teeth and falling teeth, and further improves the yield rate of the zipper.
[0048] The front end surface of the tooth head 503 is provided with a tooth head groove 504, and the tooth head groove 504 passes through the tooth 5. The setting of the tooth head groove 504 can save a certain amount of injection molding material, and at the same time, it can also avoid burrs on the tooth head of the tooth 5, thereby further improving the smoothness of the zipper.
[0049] In summary, by connecting the injection molding part 3 to the rear end face of the tooth 5, there are no burrs on the tooth heads of the tooth 5 in the finished zipper product, and the burrs are hidden, thereby preventing the clothing fabric from being caught by the burrs and causing snagging and the burrs from scratching the skin. In addition, the two rows of teeth 5 engage with each other more smoothly, effectively improving the smoothness of the finished zipper product.
[0050] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0051] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.
Claims
1. A semi-finished zipper, characterized in that: include: Cloth belts, wherein two of the cloth belts are symmetrically arranged, and a plurality of teeth are arranged in an array on one side of the two cloth belts; A connecting column, two connecting columns are symmetrically arranged, and a plurality of injection molding parts are arranged in an array on one side of the connecting column. The injection molding parts are connected to the rear end face of the tooth, and the connection position between the injection molding parts and the rear end face of the tooth is the surface to be cut.
2. A semi-finished zipper according to claim 1, characterized in that: A docking post is arranged at one end of the injection molding part, the docking post is arranged on one side of the cloth belt, and each of the docking posts is connected to one of the teeth.
3. The semi-finished zipper according to claim 1, characterized in that: Two docking posts are arranged at one end of the injection molding part, and the two docking posts arranged in the same injection molding part are respectively connected to two adjacent teeth, and each tooth is connected to one of the docking posts in the two adjacent injection molding parts.
4. A semi-finished zipper according to any one of claims 2-3, characterized in that: One end of the docking column is in a cone shape, and the tip of the cone is connected to the rear end surface of the tooth.
5. A semi-finished zipper according to claim 4, characterized in that: The surface to be cut is set to be rectangular, and the ratio of the cross-sectional length of the surface to be cut to the cross-sectional length of the tooth portion is between 1 / 3-1 / 2, and the ratio of the cross-sectional width of the surface to be cut to the cross-sectional width of the tooth portion is between 1:3-1:
2.
6. A semi-finished zipper according to claim 5, characterized in that: One side of the surface to be cut is provided with a rounded corner, and the ratio between the diameter of the rounded corner and the cross-sectional length of the surface to be cut is between 1:5 and 1:
3.
7. A zipper, characterized in that: include: Cloth belts, wherein two of the cloth belts are symmetrically arranged, and a plurality of teeth are arranged in an array on one side of the two cloth belts; The tooth comprises a cutting surface formed on a rear end surface of the tooth.
8. A zipper according to claim 7, characterized in that: The tooth further comprises: a main body, a tooth neck and a tooth head which are integrally arranged, the main body is connected to the cloth belt, the tooth head is elliptical, and the tooth neck is provided with a groove which is elliptical.
9. A zipper according to claim 8, characterized in that: A columnar ribbed portion is integrally provided on one side of the cloth tape, and the columnar ribbed portion is embedded in the main body portion.
10. A zipper according to any one of claims 8-9, characterized in that: A tooth head groove is arranged on the front end surface of the tooth head portion, and the tooth head groove passes through the tooth.