A waterproof zipper and preparation method thereof

Abstract

The present invention provides a method for preparing a waterproof zipper, comprising the following steps: feeding, sizing, pasting, punching and forming an upper stop. The present invention also provides a waterproof zipper, comprising two chain belts with chain teeth, wherein the upper surface of the chain teeth has a missing groove, the two chain belts have a chain tooth area and an upper stop missing tooth area, a patch is pasted on one side of the upper stop missing tooth area, and the upper stop is injection molded in the upper stop missing tooth area, the upper stop has a sheet portion and a main body portion, the sheet portion is molded on the other side opposite to the patch, the main body portion has a receiving portion and a passage portion, two insertion legs are formed on both sides of the passage portion, and both insertion legs have an extension portion that fills the missing groove of at least one chain tooth. The present invention can avoid the slider from getting stuck when it moves to the connection with the chain teeth, so that the slider moves smoothly, reduces the friction between the slider and the upper stop, improves the strength of the upper stop, improves the waterproof sealing performance and service life, and can produce zippers of any length.

Description

Technical Field

[0001] The invention relates to the technical field of zippers, and in particular to a waterproof zipper and a preparation method thereof. Background Art

[0002] Zippers are one of the most common and indispensable components in daily life. Clothing, storage bags, shoes and other items are equipped with zippers to provide the function of quickly opening and closing items, thereby improving the convenience of human life. With the increase in the number of people engaged in outdoor work, outdoor sports and travel, in order to adapt to weather changes, there is a gradual demand for "waterproof zippers" to prevent wind and rain from blowing through or soaking clothes, coats, bags and other items when it is windy or rainy.

[0003] The waterproof zipper is mainly composed of two chain belts with chain teeth, an upper stop and a slider. In the existing waterproof zipper, the main body is not connected to the chain teeth, which causes the slider to get stuck when it moves to the connection between the main body and the chain teeth. This makes it difficult to close the waterproof zipper and requires a large amount of force, affecting the ease of use of the zipper. After the waterproof zipper has been used repeatedly for a period of time, the main body is worn due to long-term repeated friction by the slider, which reduces the waterproof sealing and service life. At the same time, a patch is set at the upper stop to connect the two chain belts, and then the upper stop is formed. However, the strength of such an upper stop is insufficient, and the chain belt at the upper stop is prone to cracking. In addition, when the existing zipper is produced, the chain teeth and the upper stop are punched and injection molded on the chain belt of fixed length, which cannot realize the production of zippers of any length. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides a waterproof zipper and a preparation method thereof, which can prevent the slider from getting stuck when it moves up to the connection with the chain teeth, so that the slider can move smoothly and be easily opened and closed, reduce the friction between the slider and the upper stop, improve the waterproof sealing performance and service life, and at the same time, improve the strength of the upper stop, so that zippers of any length can be produced, and the applicability is wide.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A method for preparing a waterproof zipper comprises the following steps:

[0007] Step 1: feeding, according to production needs, cutting two chain belts with chain teeth, the chain teeth comprising a chain tooth body, a neck and a head, and the upper surface of the chain tooth body has a notch;

[0008] Step 2: Sizing, removing the chain teeth that need to be vacated on the two chain belts according to the required size, so that the through holes for forming the chain teeth are exposed, forming a chain tooth area and an upper stop missing tooth area;

[0009] Step 3: Paste the patch on one side of the upper tooth stop area, so that the two ends of the patch extend to the two chain belts respectively and cover the through holes corresponding to the upper tooth stop area;

[0010] Step 4: cutting holes, cutting a reserved hole for forming an accommodation portion in the upper stop missing tooth area of ​​the patch close to the chain tooth area, wherein the accommodation portion corresponds to the guide column of the slider;

[0011] Step 5: Forming the upper stop. Put one end of the two chain belts with the upper stop missing tooth area into a molding mold for injection molding the upper stop, so that the upper stop has a sheet portion and a main body portion. The sheet portion is molded on the other side opposite to the patch, and the main body portion has a receiving portion formed at the reserved hole. One end of the receiving portion close to the chain tooth area is formed with a passage portion connected to the receiving portion, and two insertion legs are formed on both sides of the passage portion. The two insertion legs are respectively located on the corresponding chain belts, and the two insertion legs have an extension portion that fills the missing groove of at least one chain tooth.

[0012] As a preferred solution, in step 1, the extending direction of the notch is the same as the length direction of the chain belt.

[0013] As a preferred solution, in step 4, a through hole is reserved in the upper stop missing tooth area of ​​the reserved hole close to the chain tooth area.

[0014] As a preferred solution, in step 5, one end portion of the patch is covered by the main body.

[0015] As a preferred solution, in step 5, the sheet portion, the main body portion and the insertion leg portion are integrally formed.

[0016] As a preferred solution, in step 5, the sheet portion is partially embedded in the through hole, and the sheet portion is higher than the surface of the chain belt.

[0017] As a preferred solution, in step 5, one end of the extension portion away from the accommodating portion extends out of the notch and protrudes toward the outside of the notch.

[0018] A waterproof zipper comprises two chain belts with chain teeth, the chain teeth comprising a chain tooth body, a neck and a head, the upper surface of the chain tooth body having a missing groove, the two chain belts having a chain tooth area and an upper stop missing tooth area formed after the chain teeth are removed, the upper stop missing tooth area exposing a through hole for forming the chain teeth, a patch is pasted on one side of the upper stop missing tooth area, two ends of the patch respectively extend to the two chain belts and cover the through holes corresponding to the upper stop missing tooth area, the upper stop missing tooth area of ​​the patch near the chain tooth area is provided with a reserved hole, the upper stop missing tooth area is injection molded with an upper stop, the upper stop has a sheet portion and a main body portion, the sheet portion is molded on the other side opposite to the patch, the main body portion has a housing portion molded at the reserved hole, the end of the housing portion near the chain tooth area has a passage portion connected to the housing portion, two insertion legs are formed on both sides of the passage portion, the two insertion legs are respectively located on the corresponding chain belts, and the two insertion legs each have an extension portion filled into the missing groove of at least one chain tooth.

[0019] As a preferred solution, the extending direction of the notch is the same as the length direction of the chain belt.

[0020] As a preferred solution, one end of the extension portion away from the accommodating portion extends out of the notch and protrudes toward the outside of the notch.

[0021] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, 1. By arranging a notch extending along the length direction of the chain belt on the chain tooth body, the insertion leg of the upper stop is formed with an extension portion filling the notch, thereby realizing the connection between the upper stop and the chain tooth, avoiding the slider from getting stuck when it moves to the connection with the chain tooth, making the slider move smoothly and easy to open and close, improving the convenience of using the zipper, reducing the friction between the slider and the upper stop, thereby reducing the force of the waterproof zipper and the wear of the upper stop, and improving the waterproof sealing and service life; 2. The end of the extension portion extends out of the notch away from the accommodating portion and protrudes outward, preventing the extension portion from falling off, and improving the connection stability between the upper stop and the chain tooth; 3. By arranging the sheet portion and the main body to be integrally formed, and the sheet portion covers the through hole, the strength of the upper stop is improved, and the cracking of the chain belt at the upper stop is avoided; 4. According to needs, two chain belts with chain teeth of any length are cut, and the upper stop is formed after removing some of the chain teeth, so that the production of zippers of any length can be realized, and the applicability is wide.

[0022] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of an embodiment of the present invention;

[0024] Figure 2 Figure 1A partial enlarged schematic diagram of part A;

[0025] Figure 3 A front view of the upper tooth stop area of ​​an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a patch according to an embodiment of the present invention;

[0027] Figure 5 Figure 4 Schematic diagram of the cross section at BB;

[0028] Figure 6 A front view of the top stop of an embodiment of the present invention;

[0029] Figure 7 Figure 6 A partial enlarged schematic diagram of part C in the middle;

[0030] Figure 8 Figure 6 Schematic diagram of the cross section at DD in the middle;

[0031] Fig. 9 Figure 6 Schematic diagram of the cross section at EE;

[0032] Fig.10 Figure 6 Schematic diagram of the cross section at FF.

[0033] Description of the accompanying drawings:

[0034] 10-chain belt; 11-chain tooth; 111-chain tooth body;

[0035] 112-slot; 113-neck; 114-head;

[0036] 12-upper tooth stop area; 13-reserved hole; 14-through hole;

[0037] 15-patch; 20-main body; 21-sheet portion;

[0038] 22-accommodating portion; 23-inserting leg portion; 231-extension portion;

[0039] 24- Access department. DETAILED DESCRIPTION

[0040] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have specific directions, be constructed and operated in specific directions. Therefore, they should not be understood as limitations on the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figure 1-10 As shown, a method for preparing a waterproof zipper comprises the following steps:

[0043] Step 1: Feeding, according to production needs, two chain belts 10 with chain teeth 11 are cut, the chain teeth 11 include a chain tooth body 111, a neck 113 and a head 114, the upper surface of the chain tooth body 111 has a notch 112, and the extension direction of the notch 112 is the same as the length direction of the chain belt 10;

[0044] Step 2: Sizing, removing the chain teeth 11 that need to be vacated on the two chain belts 10 according to the required size, so that the through holes 14 for forming the chain teeth 11 are exposed, forming a chain tooth area and an upper stop missing tooth area;

[0045] Step 3: Paste the patch 15 on one side of the upper tooth-stopping area 12, so that both ends of the patch 15 extend toward the two chain belts 10 respectively and cover the through holes 14 corresponding to the upper tooth-stopping area 12;

[0046] Step 4: cutting holes, cutting a reserved hole 13 for forming an accommodation portion 22 in the upper stop missing tooth area 12 of the patch 15 close to the chain tooth area, the accommodation portion 22 corresponds to the guide column of the slider, and the reserved hole 13 is close to the upper stop missing tooth area 12 of the chain tooth area. A through hole 14 is reserved;

[0047] Step 5: Forming the upper stop. Put one end of the two chain belts 10 with the upper stop missing tooth area 12 into a molding mold for injection molding the upper stop, so that the upper stop has a sheet portion 21 and a main body portion 20. The sheet portion 21 is formed on the other side opposite to the patch 15. One end of the patch 15 is partially covered by the main body portion 20. The main body portion 20 has a receiving portion 22 formed at the reserved hole 13. The receiving portion 22 has a passage portion 24 connected to the receiving portion 22 at one end close to the chain tooth area. Two insertion legs 23 are formed on both sides of the passage portion 24. The two insertion legs 23 are respectively located on the corresponding chain belts 10, and the two insertion legs 23 have an extension portion 231 that fills the missing groove 112 of at least one chain tooth 11. The extension portion 231 extends out of the missing groove 112 away from one end of the receiving portion 22 and protrudes toward the outside of the missing groove 112.

[0048] The sheet portion 21 , the main body portion 20 and the insertion leg portion 23 are integrally formed, and the sheet portion 21 is partially embedded in the through hole 14 , and the sheet portion 21 is higher than the surface of the chain belt 10 .

[0049] like Figure 1-10 As shown, a waterproof zipper includes two chain belts 10 with chain teeth 11, wherein the chain teeth 11 include a chain tooth body 111, a neck 113 and a head 114, wherein the upper surface of the chain tooth body 111 has a notch 112, wherein the extension direction of the notch 112 is the same as the length direction of the chain belt 10, and the two chain belts 10 have a chain tooth area and an upper stop notch area 12 formed after the chain teeth 11 are removed, wherein the upper stop notch area 12 exposes a through hole 14 for forming the chain teeth 11, and a patch 15 is pasted on one side of the upper stop notch area 12, wherein the two ends of the patch 15 extend toward the two chain belts 10 respectively and cover the through holes 14 corresponding to the upper stop notch area 12, and the patch 15 is provided with a reserved hole 13 near the upper stop notch area 12 of the chain tooth area, wherein the upper stop notch area 12 of the patch 15 is provided with a reserved hole 13. The tooth area 12 is injection molded with an upper stop, and the upper stop has a sheet portion 21 and a main body portion 20. The sheet portion 21 is molded on the other side opposite to the patch 15, and the main body portion 20 is partially embedded in the through hole 14. The main body portion 20 has a receiving portion 22 molded at the reserved hole 13, and the receiving portion 22 has a passage portion 24 connected to the receiving portion 22 at one end close to the chain tooth area, and two insertion legs 23 are formed on both sides of the passage portion 24. The two insertion legs 23 are respectively located on the corresponding chain belt 10, and the two insertion legs 23 have an extension portion 231 that fills the notch 112 of at least one chain tooth 11, and the extension portion 231 extends out of the notch 112 away from the end of the receiving portion 22 and protrudes toward the outside of the notch 112.

[0050] To summarize, 1. By providing a notch extending along the length direction of the chain belt on the chain tooth body, the insertion leg of the upper stop is formed with an extension portion filling the notch, thereby realizing the connection between the upper stop and the chain tooth, avoiding the slider from getting stuck when it moves to the connection with the chain tooth, making the slider move smoothly and easy to open and close, thereby improving the ease of use of the zipper, reducing the friction between the slider and the upper stop, thereby reducing the force of the waterproof zipper and the wear of the upper stop, and improving the waterproof sealing and service life; 2. The extension portion extends out of the notch away from the end of the accommodating portion and protrudes outward to prevent the extension portion from falling off, thereby improving the connection stability between the upper stop and the chain tooth; 3. By providing a sheet portion and the main body to be integrally formed, and the sheet portion covers the through hole, the strength of the upper stop is improved, and the chain belt at the upper stop is avoided from cracking; 4. According to needs, two chain belts with chain teeth of any length can be cut, and the upper stop can be formed after removing some of the chain teeth, so that zippers of any length can be produced, and it has a wide range of applicability.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a waterproof zipper, characterized in that: The following steps are involved: Step 1: feeding, according to production needs, cutting two chain belts with chain teeth, the chain teeth comprising a chain tooth body, a neck and a head, and the upper surface of the chain tooth body has a notch; Step 2: Sizing, removing the chain teeth that need to be vacated on the two chain belts according to the required size, so that the through holes for forming the chain teeth are exposed, forming a chain tooth area and an upper stop missing tooth area; Step 3: Paste the patch on one side of the upper tooth stop area, so that the two ends of the patch extend to the two chain belts respectively and cover the through holes corresponding to the upper tooth stop area; Step 4: cutting holes, cutting a reserved hole for forming an accommodation portion in the upper stop missing tooth area of ​​the patch close to the chain tooth area, wherein the accommodation portion corresponds to the guide column of the slider; Step 5: Forming the upper stop. Put one end of the two chain belts with the upper stop missing tooth area into a molding mold for injection molding the upper stop, so that the upper stop has a sheet portion and a main body portion. The sheet portion is molded on the other side opposite to the patch, and the main body portion has a receiving portion formed at the reserved hole. One end of the receiving portion close to the chain tooth area is formed with a passage portion connected to the receiving portion, and two insertion legs are formed on both sides of the passage portion. The two insertion legs are respectively located on the corresponding chain belts, and the two insertion legs have an extension portion that fills the missing groove of at least one chain tooth.

2. The method for preparing a waterproof zipper according to claim 1, characterized in that: In step 1, the extending direction of the notch is the same as the length direction of the chain belt.

3. The method for preparing a waterproof zipper according to claim 1, characterized in that: In step 4, a through hole is reserved in the upper stop missing tooth area of ​​the reserved hole close to the chain tooth area.

4. The method for preparing a waterproof zipper according to claim 1, characterized in that: In step 5, one end portion of the patch is covered by the main body.

5. The method for preparing a waterproof zipper according to claim 1, characterized in that: In step 5, the sheet portion, the main body portion and the insertion leg portion are integrally formed.

6. The method for preparing a waterproof zipper according to claim 5, characterized in that: The sheet portion is partially embedded in the through hole, and the sheet portion is higher than the surface of the chain belt.

7. The method for preparing a waterproof zipper according to claim 1, characterized in that: One end of the extension portion away from the accommodating portion extends out of the notch and protrudes toward the outside of the notch.

8. A waterproof zipper, characterized in that: The chain belt comprises two chain teeth, wherein the chain teeth comprise a chain tooth body, a neck and a head, the upper surface of the chain tooth body comprises a notch, the two chain belts comprise a chain tooth area and an upper stop notch area formed after the chain teeth are removed, the upper stop notch area exposes a through hole for forming the chain teeth, a patch is pasted on one side of the upper stop notch area, two ends of the patch extend toward the two chain belts respectively and cover the through holes corresponding to the upper stop notch area, the upper stop notch area of ​​the patch near the chain tooth area is provided with a reserved hole, the upper stop notch area is injection molded with an upper stop, the upper stop comprises a sheet portion and a main body portion, the sheet portion is molded on the other side opposite to the patch, the main body portion has a housing portion molded at the reserved hole, the end of the housing portion near the chain tooth area has a passage portion connected to the housing portion, two insertion legs are formed on both sides of the passage portion, the two insertion legs are respectively located on the corresponding chain belts, and the two insertion legs each have an extension portion filled into the notch of at least one chain tooth.

9. A waterproof zipper according to claim 8, characterized in that: The extending direction of the notch is the same as the length direction of the chain belt.

10. The waterproof zipper according to claim 9, characterized in that: One end of the extension portion away from the accommodating portion extends out of the notch and protrudes toward the outside of the notch.

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