Zipper tooth mold
By setting the positioning bevel and the limiting bevel in the zipper tooth mold, the accuracy problem of the core pulling and the mold core is solved, and the high-quality molding of the chain teeth and the long service life of the mold are achieved.
Patent Information
- Application Number
- CN202422530725.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-18
AI Technical Summary
In existing zipper tooth molds, the matching accuracy between the core pulling and the mold core cannot be guaranteed, resulting in poor quality of the chain teeth, and the core pulling deviation can easily cause damage to the mold.
A zipper tooth mold was designed. By setting a positioning bevel and a limiting bevel between the core pulling and the assembly groove, the precise positioning of the core pulling was achieved. The sliding stability was ensured by the cooperation between the guide part and the straight wall section. At the same time, the blank length was adjusted by using a rubber plug to improve the adaptability of the mold.
The matching accuracy between the core pulling and the mold core is improved, the quality of the chain teeth is guaranteed, the service life of the mold is extended, and the adaptability and stability of the mold are enhanced.
Smart Images
Figure CN223354826U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of molds, and in particular relates to a zipper element mold. Background Art
[0002] Zippers rely on continuously arranged chain teeth to combine or separate items. As an important accessory, they are widely used in various textiles. Chain teeth are mostly directly injection-molded on the cloth belt. The mold core of the chain tooth mold has multiple pairs of cavities arranged along its length to improve molding efficiency. There are notches at the ends of the chain teeth, so the mold is provided with core pulling to cooperate with the cavity to mold the chain teeth. The matching accuracy between the core pulling and the mold core directly affects the quality of the chain teeth. Existing core pulling mostly enters the cavity vertically. The core pulling is prone to offset during the up and down sliding process, affecting the quality of the chain teeth. Moreover, the chain teeth are tiny components. A small offset of the core pulling will also cause the mold core and the core pulling to collide with each other, causing damage to the mold. Summary of the Invention
[0003] The present invention aims to solve the problem that the core pulling and the mold core of the zipper element mold cannot ensure the matching accuracy in the existing technology, and provides a zipper element mold. The invention objectives of the present invention are achieved through the following technical solutions:
[0004] A zipper chain element mold, comprising an upper mold core and a lower mold core, wherein the upper mold core is provided with a glue injection port and a glue injection channel, the glue injection channel extending along the length direction of the upper mold core, and a first upper mold groove and a second upper mold groove are symmetrically formed on both sides of the glue injection channel; the lower mold core is formed with a first lower mold groove aligned with the first upper mold groove, and a second lower mold groove aligned with the second upper mold groove, when the upper mold core and the lower mold core are molded together, the first upper mold groove and the corresponding first lower mold groove cooperate to define a first mold cavity connected to the glue injection channel, and the second upper mold groove and the corresponding second lower mold groove cooperate to define a second mold cavity connected to the glue injection channel; The lower mold core is provided with an assembly groove opening upward, and the assembly groove is located between the first lower mold groove and the second lower mold groove. A core pulling is slidably assembled in the assembly. The core pulling comprises a forming part, a positioning part and a guide part from top to bottom. The positioning part comprises a first positioning inclined surface and a second positioning inclined surface respectively arranged on the two side walls of the core pulling. The two groove walls of the assembly groove are respectively provided with a first limiting inclined surface cooperating with the first positioning inclined surface, and a second limiting inclined surface cooperating with the second positioning inclined surface. When the upper mold core and the lower mold core are clamped, the core pulling slides down, the first positioning inclined surface is fitted with the first limiting inclined surface, and the second positioning inclined surface is fitted with the second limiting inclined surface.
[0005] Preferably, the assembly groove comprises a straight wall section and an outward-expanding section from bottom to top, and the first limiting inclined surface and the second limiting inclined surface respectively define the groove walls on both sides of the outward-expanding section.
[0006] Preferably, the guide portion of the core pulling is a rectangular structure and is slidably embedded in the straight wall section of the assembly groove. The width of the guide portion is adapted to the groove width of the straight wall section. An anti-slip block is protruding from the bottom of the guide portion. There are two anti-slip blocks, which are respectively arranged at both ends of the guide portion.
[0007] Preferably, a plurality of spring slots for assembling springs are provided at the bottom of the assembly slot, the lower end of the spring abuts against the bottom of the spring slot, and the upper end of the spring abuts against the bottom wall of the core pulling.
[0008] Preferably, the positioning portion of the core pulling is a trapezoidal block that is larger at the top and smaller at the bottom, and the first positioning inclined surface and the second positioning inclined surface respectively define two symmetrical side walls of the positioning portion.
[0009] Preferably, the forming portion includes a first outward wing and a second outward wing, which extend outward horizontally, and the side edge of the first outward wing is formed with a first core strip extending to the first cavity, and the side edge of the second outward wing is formed with a second core strip extending to the second cavity.
[0010] Preferably, a first rubber blocking component and a second rubber blocking component are assembled in the upper mold core, and the first rubber blocking component and the second rubber blocking component respectively block the first end and the second end of the rubber injection channel.
[0011] Preferably, the first glue blocking part is a glue blocking pin fixed to the upper mold core, and the bottom of the glue blocking pin is provided with a glue blocking head extending to the first end of the glue injection channel; the second glue blocking part is a glue blocking block embedded in the second end of the glue injection channel, and the position of the glue blocking block can be adjusted in the length direction of the glue injection channel, and the upper mold core is equipped with a positioning block for fixing the glue blocking block.
[0012] Preferably, the bottom of the positioning block is provided with a first abutment wall and a second abutment wall, the first abutment wall and the second abutment wall define a right-angle notch, the upper wall of the rubber blocking block is abutted against the first abutment wall, and the outer wall of the rubber blocking block is abutted against the second abutment wall, and a clamping bolt is assembled in the upper mold core, and the clamping bolt applies horizontal pressure to the positioning block.
[0013] Preferably, both ends of the assembly groove are equipped with blocking blocks, which are respectively in contact with the first end and the second end of the core pulling, and the upper parts of the two blocking blocks are formed with stoppers that cooperate with the anti-slip blocks of the core pulling.
[0014] Compared with the prior art, the utility model has the following technical effects: by optimizing the structure of the core pulling and the assembly groove, two positioning inclined surfaces are provided on the core pulling, which respectively cooperate with the two limiting inclined surfaces on the lower mold core to realize the precise positioning of the core pulling, effectively improve the matching accuracy of the core pulling and the mold core, ensure the quality of the chain teeth, and extend the service life of the mold; the core pulling and the assembly groove are arranged in sections, the positioning part of the core pulling cooperates with the outward expansion section of the assembly groove to realize centering positioning, and the guide part of the core pulling cooperates with the straight wall section of the assembly groove to realize sliding guidance; one position of the two rubber blocking parts is fixed, and the other position is adjustable, which can adjust the blank length of the cloth tape and improve the adaptability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of the utility model;
[0016] Figure 2 This is a structural view of the upper mold core in the utility model;
[0017] Figure 3 This is a structural view of the lower mold core and mold core of the utility model;
[0018] Figure 4 This is a structural view of the middle and lower mold core of the utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the positioning block and the rubber blocking block in the utility model;
[0020] Figure 6 This is a schematic diagram of the mold core structure of the utility model;
[0021] Figure 7 This is a side view of the mold core of the utility model;
[0022] Markings in the figure: upper mold core 10; injection port 11; injection channel 12; first upper groove 13; second upper groove 14; lower mold core 20; first lower groove 21; second lower groove 22; assembly groove 23; straight wall section 231; outward expansion section 232; first limiting slope 233; second limiting slope 234; spring groove 235; core pulling 30; forming part 31; first outward wing 311; second outward wing 312; first core strip 313; second core strip 314; positioning part 32; first positioning slope 321; second positioning slope 322; guide part 33; anti-slip block 331; glue blocking pin 41; positioning block 42; glue blocking block 43; blocking block 50. DETAILED DESCRIPTION
[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:
[0024] See also Figures 1-4The present embodiment discloses a zipper tooth mold for forming zipper teeth, which includes an upper mold core 10 and a lower mold core 20. The upper mold core 10 is provided with a glue injection port 11 and a glue injection channel 12. The glue injection channel 12 extends along the length direction of the upper mold core 10. A plurality of first upper grooves 13 and second upper grooves 14 are symmetrically formed on both sides of the glue injection channel 12, and only two are shown in the figure; the lower mold core 20 is formed with a first lower groove 21 that matches the first upper groove 13, and a second upper groove 14 that matches the first upper groove 13. The second upper groove 14 is aligned with the second lower groove 22. When the upper mold core 10 and the lower mold core 20 are closed, the first upper groove 13 and the corresponding first lower groove 21 cooperate to define a first cavity connected to the glue injection channel 12, and the second upper groove 14 and the corresponding second lower groove 22 cooperate to define a second cavity connected to the glue injection channel 12. In actual production, a set of molds can form a row of first cavities and a row of second cavities, and the first cavity and the second cavity respectively form the chain teeth on both sides of the cloth tape.
[0025] An upward-opening assembly groove 23 is provided on the lower mold core 20, and the assembly groove 23 is located between the first lower mold groove 21 and the second lower mold groove 22. A core pulling 30 is slidably assembled in the assembly. The core pulling 30 includes a forming part 31, a positioning part 32 and a guide part 33 from top to bottom. The positioning part 32 includes a first positioning inclined surface 321 and a second positioning inclined surface 322 respectively arranged on the two side walls of the core pulling 30. The two groove walls of the assembly groove 23 are respectively provided with a first limiting inclined surface 233 that cooperates with the first positioning inclined surface 321, and a second limiting inclined surface 234 that cooperates with the second positioning inclined surface 322. When the upper mold core 10 and the lower mold core 20 are molded together, the core pulling 30 slides down, the first positioning inclined surface 321 is in contact with the first limiting inclined surface 233, and the second positioning inclined surface 322 is in contact with the second limiting inclined surface 234. Two positioning inclined surfaces are set on the core pulling 30, which cooperate with the two limiting inclined surfaces on the lower mold core 20 respectively to achieve accurate positioning of the core pulling 30, effectively improve the matching accuracy between the core pulling 30 and the mold core, ensure the quality of the chain teeth, and extend the service life of the mold.
[0026] The assembly groove 23 includes a straight wall section 231 and an outward expansion section 232 from bottom to top, and the first limiting inclined surface 233 and the second limiting inclined surface 234 respectively define the groove walls on both sides of the outward expansion section 232; the guide portion 33 of the core pulling 30 is a rectangular parallelepiped structure and is slidably embedded in the straight wall section 231 of the assembly groove 23, and the width of the guide portion 33 is adapted to the groove width of the straight wall section 231. The guide portion 33 cooperates with the straight wall section 231 to guide the up and down sliding of the core pulling 30; the positioning portion 32 of the core pulling is a trapezoidal block with a larger upper portion and a smaller lower portion, and the first positioning inclined surface 321 and the second positioning inclined surface 322 respectively define the two symmetrical side walls of the positioning portion 32, and the core pulling 30 is set to a symmetrical structure for more balanced force.
[0027] The bottom of the assembly groove 23 is provided with a plurality of spring grooves 235 for assembling springs, the lower end of the spring is abutted against the bottom of the spring groove 235, and the upper end of the spring is abutted against the bottom wall of the core pulling 30; the forming portion 31 includes a first outward wing 311 and a second outward wing 312, the first outward wing 311 and the second outward wing 312 extend outward in the horizontal direction, the side edge of the first outward wing 311 is formed with a first core strip 313 extending to the first cavity, and the side edge of the second outward wing 312 is formed with a second core strip 314 extending to the second cavity. When the upper mold core 10 and the lower mold core 20 are closed, the core pulling 30 overcomes the elastic force of the spring and slides down, the first core strip 313 enters the first cavity to realize the molding of the chain teeth on one side, and the second core strip 314 enters the second cavity to realize the molding of the chain teeth on the other side; after the upper mold core 10 and the lower mold core 20 are opened, the core pulling 30 slides up under the action of the spring, the first core strip 313 leaves the first lower groove 21 on the lower mold core 20, and the second core strip 314 leaves the second lower groove 22 on the lower mold core 20, so that the chain teeth can be demolded.
[0028] In order to prevent the glue from being injected into the non-molding area of the tape, the upper mold core 10 is equipped with a first glue blocking member and a second glue blocking member, which respectively block the first end and the second end of the glue injection channel 12; specifically,
[0029] The first glue blocking part is a glue blocking pin 41 fixed to the upper mold core 10, and the bottom of the glue blocking pin 41 is provided with a glue blocking head extending to the first end of the glue injection flow channel 12; the second glue blocking part is a glue blocking block 43 embedded in the second end of the glue injection flow channel 12, and the position of the glue blocking block 43 can be adjusted in the length direction of the glue injection flow channel 12 to adjust the blank length on the cloth tape according to needs and improve the adaptability of the mold; the upper mold core 10 is equipped with a positioning block 42 for fixing the glue blocking block 43, which is positioned The bottom of the block 42 is provided with a first abutting wall and a second abutting wall, and the first abutting wall and the second abutting wall define a right-angle notch. The upper wall of the rubber blocking block 43 is abutted against the first abutting wall, and the outer wall of the rubber blocking block 43 is abutted against the second abutting wall. A clamping bolt is assembled in the upper mold core 10, and the clamping bolt applies horizontal pressure to the positioning block 42. When the position of the rubber blocking block 43 needs to be adjusted, the clamping bolt is loosened to release the limit of the positioning block 42 on the rubber blocking block 43. After adjusting it into place, the clamping bolt is tightened.
[0030] To prevent the core pulling 30 from falling out, an anti-falling block 331 is protruding from the bottom of the guide portion 33 of the core pulling 30. There are two anti-falling blocks 331, which are respectively arranged at both ends of the guide portion 33; blocking blocks 50 are respectively assembled at both ends of the assembly groove 23, and the two blocking blocks 50 are respectively abutted against the first end and the second end of the core pulling 30, and the upper parts of the two blocking blocks 50 are both formed with stoppers that cooperate with the anti-falling blocks 331 of the core pulling 30.
[0031] It should be understood that in the claims and description of this utility model, all phrases "including..." should be understood as open-ended, meaning equivalent to "at least including...", and should not be understood as closed-ended, meaning "only including...". The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated.
[0032] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should be covered by the scope of protection of the utility model.
Claims
1. A zipper element mold, comprising an upper mold core and a lower mold core, characterized in that: The upper mold core is provided with a glue injection port and a glue injection flow channel, and the glue injection flow channel extends along the length direction of the upper mold core, and a first upper mold groove and a second upper mold groove are symmetrically formed on both sides of the glue injection flow channel; the lower mold core is formed with a first lower mold groove that matches the first upper mold groove, and a second lower mold groove that matches the second upper mold groove. When the upper mold core and the lower mold core are molded together, the first upper mold groove and the corresponding first lower mold groove cooperate to define a first mold cavity connected to the glue injection flow channel, and the second upper mold groove and the corresponding second lower mold groove cooperate to define a second mold cavity connected to the glue injection flow channel; the lower mold core is provided with an opening An upward assembly groove, the assembly groove is located between the first lower molding groove and the second lower molding groove, and a core pulling is slidably assembled in the assembly. The core pulling includes a forming part, a positioning part and a guide part from top to bottom. The positioning part includes a first positioning inclined surface and a second positioning inclined surface respectively arranged on the two side walls of the core pulling. The two groove walls of the assembly groove are respectively provided with a first limiting inclined surface that cooperates with the first positioning inclined surface, and a second limiting inclined surface that cooperates with the second positioning inclined surface. When the upper mold core and the lower mold core are closed, the core pulling slides down, the first positioning inclined surface is fitted with the first limiting inclined surface, and the second positioning inclined surface is fitted with the second limiting inclined surface.
2. A zipper element mold according to claim 1, characterized in that: The assembly groove includes a straight wall section and an outward expansion section from bottom to top, and the first limiting inclined surface and the second limiting inclined surface respectively define the groove walls on both sides of the outward expansion section.
3. A zipper element mold according to claim 2, characterized in that: The guide part of the core pulling is a rectangular structure and is slidably embedded in the straight wall section of the assembly groove. The width of the guide part is adapted to the groove width of the straight wall section. An anti-slip block is protruding from the bottom of the guide part. There are two anti-slip blocks, which are respectively arranged at both ends of the guide part.
4. A zipper element mold according to claim 3, characterized in that: The bottom of the assembly groove is provided with a plurality of spring grooves for assembling springs. The lower end of the spring is supported on the bottom of the spring groove, and the upper end of the spring is supported on the bottom wall of the core pulling.
5. A zipper element mold according to any one of claims 1 to 4, characterized in that: The positioning portion of the core pulling is a trapezoidal block that is larger at the top and smaller at the bottom. The first positioning inclined surface and the second positioning inclined surface respectively define two symmetrical side walls of the positioning portion.
6. The zipper element mold according to claim 5, characterized in that: The forming portion includes a first outward wing and a second outward wing, which extend outward in a horizontal direction. The side edge of the first outward wing is formed with a first core strip extending to the first cavity, and the side edge of the second outward wing is formed with a second core strip extending to the second cavity.
7. The zipper element mold according to claim 1, characterized in that: The upper mold core is equipped with a first rubber blocking component and a second rubber blocking component, and the first rubber blocking component and the second rubber blocking component respectively block the first end and the second end of the rubber injection flow channel.
8. The zipper element mold according to claim 7, characterized in that: The first glue blocking part is a glue blocking pin fixed on the upper mold core, and the bottom of the glue blocking pin is provided with a glue blocking head extending to the first end of the glue injection channel; the second glue blocking part is a glue blocking block embedded in the second end of the glue injection channel, and the position of the glue blocking block can be adjusted in the length direction of the glue injection channel. The upper mold core is equipped with a positioning block for fixing the glue blocking block.
9. The zipper element mold according to claim 8, characterized in that: The bottom of the positioning block is provided with a first abutting wall and a second abutting wall, and the first abutting wall and the second abutting wall define a right-angle notch. The upper wall of the rubber blocking block is abutted against the first abutting wall, and the outer wall of the rubber blocking block is abutted against the second abutting wall. A clamping bolt is assembled in the upper mold core, and the clamping bolt applies horizontal pressure to the positioning block.
10. The zipper element mold according to claim 3, characterized in that: Both ends of the assembly groove are respectively equipped with blocking blocks, which are respectively in contact with the first end and the second end of the core pulling. The upper parts of the two blocking blocks are both formed with stoppers that cooperate with the anti-falling blocks of the core pulling.