Zipper separating piece mold

Abstract

The utility model discloses a zipper separating piece die which comprises an upper die core, a lower die core and a die holder, a first lower groove is formed in the lower die core, a first upper groove is formed in the upper die core, and when the upper die core and the lower die core are closed, a first cavity used for forming an inserting block is defined by the first lower groove and the first upper groove; an assembling hole is formed in the lower mold core, a core pulling assembly is assembled in the assembling hole and comprises a pulling core, a sliding part and a connecting part, a first positioning inclined plane and a second positioning inclined plane are arranged on the sliding part, and a first alignment inclined plane and a second alignment inclined plane are formed on the inner wall of the assembling hole; the loose core is connected with the sliding piece through a connecting piece, the loose core is driven by the sliding piece to slide between the forming position and the demolding position in a reciprocating mode, and when the loose core is located at the forming position, the first positioning inclined face is attached to the first alignment inclined face, and the second positioning inclined face is attached to the second alignment inclined face. The positioning inclined plane is matched with the alignment inclined plane, so that the loose core can be accurately positioned, and the matching precision of the loose core and the mold core is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of zippers, and in particular relates to a zipper separating piece mould. 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. In addition to the chain teeth, zippers are also provided with separating parts. The separating parts include an upper stop formed at the upper end of the zipper, and an insert block and an insert rod formed at the lower end of the zipper. The insert rod is inserted into the insert block, and then the zippers on both sides are combined under the closure of the slider. The insert block is provided with an insert cavity for inserting the insert rod. Therefore, a core puller is required in the mold for injection molding of the insert block. The matching accuracy between the core puller and the mold core directly affects the quality of the insert block. Existing core pullers mostly enter the cavity horizontally. However, due to limited mold space, it is impossible to set too many positioning parts and guide parts. The core puller is prone to offset during the horizontal sliding process, which affects the quality of the insert block. Moreover, the insert block is a tiny component. A small offset of the core puller will also cause the mold core and the core puller to collide with each other, causing damage to the mold. Summary of the Invention

[0003] The present invention aims to solve the problem in the prior art that the precision of the core pulling and the mold core of the zipper separating piece mold cannot be guaranteed, which affects the quality of the separated piece and the service life of the mold. The present invention provides a zipper separating piece mold. The invention objectives of the present invention are achieved through the following technical solutions:

[0004] The cam is secured to the upper and lower surfaces of the mold base and is adapted to engage the first and second positioning surfaces of the mold base when the cam is engaged.

[0005] Preferably, the core pulling device includes a molding strip and a connecting block. The molding strip extends horizontally. A molding head is provided at the front end of the molding strip. When the core pulling device is located at the molding position, the molding head is inserted into the first cavity.

[0006] Preferably, the connecting block includes a downward extending bar extending vertically downward into the assembly hole, and a hook body formed at the bottom of the downward extending bar, and a hook groove with an upward opening formed on the hook body.

[0007] Preferably, the sliding member includes a slider connected to the cylinder drive, and a positioning block formed at the front end of the slider, and the first positioning inclined surface and the second positioning inclined surface are respectively formed on two side walls of the positioning block.

[0008] Preferably, an assembly block is protruding from the upper end surface of the positioning block, and the assembly block is provided with a transverse groove for embedding the hook body, and a longitudinal groove spanning the transverse groove, and the longitudinal groove is aligned and connected with the hook groove.

[0009] Preferably, the connecting member includes a fixing block fixed above the positioning block, and a connecting rod protruding from a side wall of the fixing block, and the connecting rod extends from the longitudinal groove into the hook groove.

[0010] Preferably, the assembly hole includes a rear wall, a first side wall, a second side wall and a front wall, the first alignment slope is formed at the connection position between the first side wall and the front wall, and the second alignment slope is formed at the connection position between the second side wall and the front wall.

[0011] Preferably, a sliding groove for the slider to slide is opened at the bottom of the lower mold core, and the sliding groove is located behind the rear wall and is connected to the assembly hole; the slider slides horizontally in the sliding groove, and the groove width of the sliding groove is adapted to the width of the slider.

[0012] Preferably, a strip groove for accommodating the molding strip is formed on the upper end surface of the lower mold core, the strip groove is connected between the first lower groove and the assembly hole, and the groove width of the strip groove is adapted to the width of the molding strip.

[0013] Preferably, the upper end surface of the lower mold core is also formed with a second lower groove for forming the insert rod, a third lower groove for forming the first upper stop, and a fourth lower groove for forming the second upper stop; the injection flow channel has four branch flow channels, which are respectively connected to the first lower groove, the second lower groove, the third lower groove, and the fourth lower groove.

[0014] Compared with the prior art, the present invention can realize the precise positioning of the core pulling through the cooperation of two positioning inclined surfaces and two alignment inclined surfaces, improve the cooperation between the core pulling and the mold core, so as to ensure the quality of the molded parts and extend the service life of the mold; the core pulling is a consumable part, which is separated from the sliding part and connected by a connecting part, which is convenient for replacing the core pulling, and the separated structure is convenient for component processing; the core pulling, sliding part and connecting part structure are reasonably arranged, which can make full use of the limited assembly space and ensure the cooperation between the components; the slide groove can guide the sliding of the slider, and the strip groove can guide the sliding of the forming strip. The double guide can effectively ensure that the core pulling assembly slides in a specific direction. 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 schematic diagram of the structure of the middle and lower mold cores and core pulling components of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the middle and lower mold cores of the utility model;

[0018] Figure 4 This is a schematic diagram of the upper mold structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the core-pulling component in the utility model;

[0020] Figure 6 This is a schematic diagram of the core-pulling structure in the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the sliding member in the utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the connecting piece in the utility model;

[0023] Markings in the figure: upper mold core 10; first upper groove 11; second upper groove 12; lower mold core 20; first lower groove 21; second lower groove 22; third lower groove 23; fourth lower groove 24; glue injection channel 25; assembly hole 26; first alignment slope 261; second alignment slope 262; mold base 30; core pulling 41; core strip 411; lower extension strip 412; hook body 413; hook groove 414; sliding member 42; slider 421; positioning block 422; first positioning slope 4221; second positioning slope 4222; assembly block 423; transverse groove 4231; longitudinal groove 4232; connecting member 43; fixing block 431; connecting rod 432; insert block 50; insert rod 60. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0025] See also Figures 1-4The present embodiment discloses a zipper separating piece mold, which includes an upper mold core 10, a lower mold core 20 and a mold base 30. The upper end surface of the lower mold core 20 is provided with a glue injection channel 25 and a first lower mold groove 21 connected to the glue injection channel 25. The lower end surface of the upper mold core 10 is provided with a first upper mold groove 11 that is aligned with the first lower mold groove 21. When the upper mold core 10 and the lower mold core 20 are molded together, the first lower mold groove 21 and the first upper mold groove 11 define a first mold cavity for forming an insert block 50; the upper end surface of the lower mold core 20 is also formed with a second lower mold groove for forming an insert rod 60. The mold groove 22, the lower end surface of the upper mold core 10 is provided with a second upper mold groove 12 that is aligned with the second lower mold groove 22. When the upper mold core 10 and the lower mold core 20 are molded together, the second lower mold groove 22 and the second upper mold groove 12 define a second mold cavity for forming the insert rod 60; the lower mold core 20 is also formed with a third lower mold groove 23 for forming the first upper stop, and a fourth lower mold groove 24 for forming the second upper stop; the glue injection channel 25 has four branch channels, which are respectively connected to the first lower mold groove 21, the second lower mold groove 22, the third lower mold groove 23, and the fourth lower mold groove 24.

[0026] See also Figure 5-Figure 8 , an assembly hole 26 that passes through the lower mold core 20 is provided, and a core pulling assembly 41 is assembled in the assembly hole 26, and the core pulling assembly 41 includes a core pulling 41, a sliding member 42 and a connecting member 43. The sliding member 42 is provided with a first positioning inclined surface 4221 and a second positioning inclined surface 4222, and a first alignment inclined surface 261 and a second alignment inclined surface 262 are formed on the inner wall of the assembly hole 26; the core pulling 41 and the sliding member 42 are connected by the connecting member 43, and the core pulling 41 can slide back and forth between the molding position and the demolding position under the drive of the sliding member 42. When the core pulling 41 is in the molding position, it cooperates with the first cavity molding plug 50, and the first positioning inclined surface 4221 is attached to the first alignment inclined surface 261, and the second positioning inclined surface 4222 is attached to the second alignment inclined surface 262. The cooperation of the two positioning inclined surfaces and the two alignment inclined surfaces can realize the precise positioning of the core pulling 41 and improve the cooperation between the core pulling 41 and the mold core.

[0027] The core pulling 41 includes a molding strip and a connecting block. The molding strip extends horizontally, and a molding head is provided at the front end of the molding strip. When the core pulling 41 is in the molding position, the molding head is inserted into the first cavity; the connecting block includes a downward extension strip 412 extending vertically downward to the assembly hole 26, and a hook body 413 formed at the bottom of the downward extension strip 412, and a hook groove 414 with an upward opening is formed on the hook body 413.

[0028] The sliding member 42 includes a slider 421 connected to the cylinder drive, and a positioning block 422 formed at the front end of the slider 421, the first positioning inclined surface 4221 and the second positioning inclined surface 4222 are respectively formed on the two side walls of the positioning block 422; an assembly block 423 is protruding from the upper end surface of the positioning block 422, and the assembly block 423 is provided with a transverse groove 4231 for embedding the hook body 413, and a longitudinal groove 4232 spanning the transverse groove 4231, and the longitudinal groove 4232 is aligned and connected to the hook groove 414.

[0029] The connecting member 43 includes a fixed block 431 fixed above the positioning block 422, and a connecting rod 432 protruding from the side wall of the fixed block 431. The fixed block 431 and the positioning block 422 are provided with corresponding screw holes, and the two are fixedly connected by bolts. The connecting rod 432 extends from the longitudinal groove 4232 to the hook groove 414, thereby realizing the connection between the core pulling 41 and the sliding member 42. The hook body 413 cooperates with the transverse groove 4231 to limit the relative freedom of the core pulling 41 and the sliding member 42 in the vertical direction. The cooperation of the connecting rod 432 with the longitudinal groove 4232 and the hook groove 414 limits the relative freedom of the core pulling 41 and the sliding member 42 in the transverse direction. The core pulling part 41 is a consumable part. It is separately arranged from the sliding part 42 and connected by a connecting part 43, which makes it easy to replace the core pulling part 41, and the separate structure facilitates component processing; the core pulling part 41, sliding part 42, and connecting part 43 have a reasonable structural arrangement, which can make full use of the limited assembly space and ensure the fit between the components.

[0030] The assembly hole 26 includes a rear wall, a first side wall, a second side wall and a front wall. The first alignment slope 261 is formed at the connection position between the first side wall and the front wall, and the second alignment slope 262 is formed at the connection position between the second side wall and the front wall. The first alignment slope 261 has the same slope as the first positioning slope 4221, and the second alignment slope 262 has the same slope as the second positioning slope 4222.

[0031] The bottom of the lower mold core 20 defines a sliding groove for the slider 421. This groove is located behind the rear wall and communicates with the assembly hole 26. The slider 421 slides horizontally within the groove, and its width matches the width of the slider 421. A strip groove for accommodating a molding strip is formed on the upper end surface of the lower mold core 20. This strip groove connects the first lower groove 21 and the assembly hole 26, and its width matches the width of the molding strip. The groove guides the sliding of the slider 421, and the strip groove guides the sliding of the molding strip. This dual guidance effectively ensures that the core puller 41 assembly slides in a specific direction, improving the precision of the fit between the core puller 41 and the mold core.

[0032] 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.

[0033] 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 separating piece mold, comprising an upper mold core, a lower mold core and a mold base, characterized in that: The upper end surface of the lower mold core is provided with a glue injection channel and a first lower mold groove connected to the glue injection channel, the lower end surface of the upper mold core is provided with a first upper mold groove which is aligned with the first lower mold groove, and when the upper mold core and the lower mold core are molded together, the first lower mold groove and the first upper mold groove define a first cavity for forming an insert block; an assembly hole that passes through the lower mold core is provided on the lower mold core, and a core pulling assembly is assembled in the assembly hole, and the core pulling assembly includes a core pulling core, a sliding part and a connecting part, and the sliding part is provided with a first positioning inclined surface and a second positioning inclined surface, and a first alignment inclined surface and a second alignment inclined surface are formed on the inner wall of the assembly hole; the core pulling core is connected to the sliding part through a connecting part, and the core pulling core can slide back and forth between the molding position and the demolding position under the drive of the sliding part. When the core pulling core is in the molding position, it cooperates with the first cavity to form the insert block, and the first positioning inclined surface is attached to the first alignment inclined surface, and the second positioning inclined surface is attached to the second alignment inclined surface.

2. A zipper separator mold according to claim 1, characterized in that: The core pulling device includes a forming strip and a connecting block. The forming strip extends horizontally. A forming head is provided at the front end of the forming strip. When the core pulling device is located at the forming position, the forming head is inserted into the first cavity.

3. A zipper separating piece mold according to claim 2, characterized in that: The connecting block includes a downward extending bar extending vertically downward to the assembly hole, and a hook body formed at the bottom of the downward extending bar, wherein a hook groove with an upward opening is formed on the hook body.

4. A zipper separating piece mold according to claim 3, characterized in that: The sliding member includes a slider connected to the cylinder drive, and a positioning block formed at the front end of the slider, and the first positioning inclined surface and the second positioning inclined surface are respectively formed on the two side walls of the positioning block.

5. A zipper separating piece mold according to claim 4, characterized in that: An assembly block is protruded from the upper end surface of the positioning block. The assembly block is provided with a transverse groove for locking the hook body, and a longitudinal groove spanning the transverse groove. The longitudinal groove is aligned and communicated with the hook groove.

6. A zipper separating piece mold according to claim 5, characterized in that: The connecting piece includes a fixing block fixed above the positioning block, and a connecting rod protruding from the side wall of the fixing block, and the connecting rod extends from the longitudinal groove to the hook groove.

7. A zipper separator mold according to any one of claims 4 to 6, characterized in that: The assembly hole includes a rear wall, a first side wall, a second side wall and a front wall. The first alignment slope is formed at the connection position between the first side wall and the front wall. The second alignment slope is formed at the connection position between the second side wall and the front wall.

8. The zipper separator mold according to claim 7, characterized in that: A sliding groove for the slider to slide is provided at the bottom of the lower mold core. The sliding groove is located behind the rear wall and is connected to the assembly hole. The slider slides horizontally in the sliding groove, and the groove width of the sliding groove is adapted to the width of the slider.

9. The zipper separator mold according to claim 8, characterized in that: The upper end surface of the lower mold core is formed with a strip groove for accommodating the molding strip, the strip groove is connected between the first lower groove and the assembly hole, and the groove width of the strip groove is adapted to the width of the molding strip.

10. The zipper separator mold according to claim 1, characterized in that: The upper end surface of the lower mold core is also formed with a second lower groove for forming the insert rod, a third lower groove for forming the first upper stop, and a fourth lower groove for forming the second upper stop; the glue injection flow channel has four branch flow channels, which are respectively connected to the first lower groove, the second lower groove, the third lower groove, and the fourth lower groove.

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