A watch case mold

Abstract

The utility model relates to mould technical field especially is a kind of watch case mould, the watch case mould, including upper die and lower die;Upper die includes upper die plate, the upper die core of being set in upper die plate;Lower die includes lower die plate, the lower die core of being set in lower die plate, the first phase insert of being set in lower die core, the first ejector rod of being set in lower die core;First ejector rod is provided with the first guide inclined groove of at least one pass;First phase insert is provided with first guide block, first limit block;First phase insert is slidably arranged on first ejector rod, and first guide block slides in first guide inclined groove;First limit block slides in the first limit slot on lower die core. When first ejector rod is lifted, first phase insert is pushed out to outside, and when first ejector rod is recycled, first phase insert is retracted to inside, and it is convenient to demould. First ejector rod can simultaneously drive multiple first phase inserts to act, and this kind of design makes the structure of mould more simple, more conducive to the layout of mould, and cost and processing difficulty are also greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a watch case mold. Background Technology

[0002] The watch case is one of the main components of a watch. It typically has mounting holes for buttons, knobs, and other parts. These mounting holes are usually formed using inserts / pins. Watch cases are often small in size, and the spacing between these mounting holes is relatively small. Traditional designs often use one ejector pin for each pin or insert; during demolding, the ejector pin retracts, and the pin retracts to release the mounting holes. This design requires a large number of ejector pins for demolding, which complicates the mold structure and is detrimental to mold layout.

[0003] For example, Chinese patent application number CN201820966586.0 describes an injection mold for a watch case. This type of mold uses a slanted rod to drive a protrusion to move up and down. A protrusion is connected to the slanted rod. This design requires a large number of ejector pins to achieve demolding. The multiple ejector pins also make the mold structure more complicated and are not conducive to mold layout.

[0004] For example, Chinese patent application number CN201821065093.6 discloses a watch case injection mold. This mold also uses support rods and inclined ejectors to achieve demolding. This design requires a lot of ejector rods to achieve demolding. Multiple ejector rods make the mold structure complicated and are not conducive to mold layout. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a watch case mold that is not only simple in structure but also more conducive to mold layout, thereby overcoming the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides a watch case mold, including an upper mold and a lower mold, which can be closed together. The upper mold includes an upper template and an upper mold core disposed on the upper template.

[0008] The lower mold includes a lower template, a lower mold core disposed on the lower template, a first insert disposed on the lower mold core, and a first ejector pin disposed on the lower mold core;

[0009] The first ejector pin is provided with at least one first guide groove; the first phase insert is provided with a first guide block and a first limiting block; the first phase insert is slidably disposed on the first ejector pin, the first guide block slides in the first guide groove; the first limiting block slides in the first limiting groove on the lower mold core.

[0010] Preferably, the top cross-sectional area of ​​the first ejector pin gradually decreases from top to bottom; the first guide groove is inclined toward the center line of the lower mold core.

[0011] Preferably, the front side of the top of the first push rod is provided with a first inclined surface; the back side of the top of the first push rod is provided with a second inclined surface; the left edge of the top of the first push rod is provided with a third inclined surface; and the right edge of the top of the first push rod is provided with a fourth inclined surface.

[0012] Preferably, the inclination angle of the first guide groove is between 5 and 30°, and the length of the first guide groove is greater than the length of the third and fourth inclined surfaces.

[0013] Preferably, the cross-section of the first guide block is one of the following: swallowtail, elliptical, circular, U-shaped, or rectangular.

[0014] Preferably, the lower mold further includes a second insert; the second insert is disposed on the side of the lower mold core; the second insert is disposed on the side slider; the side slider is provided with a first guide hole at an angle; the top of the second ejector rod passes through the first guide hole; the second ejector rod can drive the second insert to close on the lower mold core.

[0015] Preferably, the side slider is provided with second limiting blocks on both sides, the second limiting blocks press against the side slider, and the side slider can slide on the second limiting blocks.

[0016] Preferably, the lower mold core is further provided with a third insert; the lower mold core is provided with an upwardly inclined second guide hole; the third insert can be lifted out from the second guide hole.

[0017] Preferably, the upper mold further includes a sprue plate, a runner plate, and a heating plate; the sprue plate is provided with a sprue nozzle; the heating plate is provided with a curved heating strip; the sprue nozzle is connected to the runner on the runner plate; and the sprue nozzle on the runner plate is connected to the cavity.

[0018] Preferably, the upper mold further includes a lower mold base, a top plate disposed on the lower mold base, and an ejector plate; the lower mold plate is disposed on the lower mold base; the ejector plate is disposed on the top plate; ejector pins are disposed on the ejector plate; ejector pins are disposed in the middle, around the edges, and on the left and right sides of the lower mold core.

[0019] Compared with the prior art, this utility model has significant advantages and beneficial effects. Specifically, as shown in the above technical solution, the first ejector pin is provided with one or more first guide grooves, each first guide groove corresponding to a first phase insert. When the first ejector pin is lifted, the first phase insert is pushed outward, facilitating injection molding and hole formation; when the first ejector pin is retracted, the first phase insert is retracted inward, facilitating demolding. Therefore, one or more first phase inserts can be provided on the first ejector pin simultaneously, and a single first ejector pin can drive multiple first phase inserts to move simultaneously. This design simplifies the mold structure, facilitates mold layout, and significantly reduces cost and processing difficulty. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the mold closing state according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the upper mold core and lower mold core according to an embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the first push rod and the first insert in an embodiment of this utility model.

[0023] Figure 4 This is an embodiment of the present utility model. Figure 3 Exploded view diagram.

[0024] Figure 5 This is a schematic diagram of the assembly of the first push rod and the first insert according to an embodiment of the present utility model.

[0025] Figure 6 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0026] Figure 7 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0027] Figure 8 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0028] Figure 9 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0029] Figure 10 This is a schematic diagram of a watch case according to an embodiment of the present invention.

[0030] Figure 11 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0031] Figure 12 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0032] Explanation of reference numerals in the attached diagram:

[0033] 10. Upper mold; 11. Upper template; 12. Upper mold core; 13. Sprue plate; 14. Runner plate; 15. Heating plate; 16. Injection nozzle; 17. Heating strip; 20. Lower mold; 21. Lower template; 22. Lower mold core; 23. Lower mold base; 24. Top plate; 25. Ejector plate; 26. Ejector pin; 27. First limiting groove; 210. First ejector rod; 211. First inclined surface; 212. Second inclined surface; 213. Third inclined surface; 214. Fourth inclined surface; 215. First guide groove; 216. First insert; 217. First guide block; 218. First limiting block; 220. Second insert; 221. Side slider; 222. Second limiting block; 223. Second ejector rod; 224. Third insert; 225. Fourth insert; 30. Watch case. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0035] Please refer to Figures 1 to 10 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a watch case mold.

[0036] The first ejector pin 210 can be equipped with one or more first inserts 216. A single first ejector pin 210 can drive the action of multiple first inserts. This structure makes the mold structure simpler, more conducive to the mold layout, and reduces the mold cost.

[0037] This application provides a watch case mold 30, including an upper mold 10 and a lower mold 20, which can be closed together. The upper mold 10 includes an upper template 11 and an upper mold core 12 disposed on the upper template 11. The lower mold 20 includes a lower template 21, a lower mold core 22 disposed on the lower template 21, a first phase insert 216 disposed on the lower mold core 22, and a first ejector pin 210 disposed on the lower mold core 22. The first ejector pin 210 is provided with at least one first guide groove 215. The first phase insert 216 is provided with a first guide block 217 and a first limiting block 218. The first phase insert 216 is slidably disposed on the first ejector pin 210, the first guide block 217 slides within the first guide groove 215, and the first limiting block 218 slides within a first limiting groove 27 on the lower mold core 22. The upper mold 10 and the lower mold 20 are mounted on an injection molding machine or a die casting machine. The first limiting block 218 and the first limiting groove 27 cooperate to control the ejection direction of the first insert, ensuring motion accuracy. After the upper mold 10 and the lower mold 20 are closed, when the first ejector pin 210 pushes upward, the first guide block 217 slides in the first guide groove 215, and the first limiting block 218 slides in the first limiting groove 27 at the bottom of the lower mold core 22, causing the first phase insert 216 to be ejected outward, thus forming a mounting hole during injection molding / die casting. This design allows a single first ejector pin 210 to drive multiple first phase inserts 216. When the first ejector pin 210 retracts, the first phase insert 216 retracts inward. Therefore, this mold has a simpler structure, a more flexible layout, and helps reduce mold costs.

[0038] Preferably, the top cross-sectional area of ​​the first ejector pin 210 gradually decreases from top to bottom; the first guide groove 215 is inclined towards the center line of the lower mold core 22. The smaller top cross-sectional area of ​​the first ejector pin 210 allows for better control of its movement position, resulting in more precise positioning when the first ejector pin 210 is lifted. The inclination of the first guide groove 215 towards the center line of the lower mold core 22 ensures that the first insert 216 is pushed out when the first ejector pin 210 moves upward and retracts when the first ejector pin 210 moves downward. This design facilitates product demolding and prevents product damage during demolding. The inclination of the first guide groove 215 towards the center line of the lower mold core 22 also improves stress distribution and overall stability.

[0039] Preferably, the front side of the top of the first push rod 210 is provided with a first inclined surface 211; the back side of the top of the first push rod 210 is provided with a second inclined surface 212; the left edge of the top of the first push rod 210 is provided with a third inclined surface 213; and the right edge of the top of the first push rod 210 is provided with a fourth inclined surface 214. The top of the first push rod 210 is formed by cutting the first inclined surface 211, the second inclined surface 212, the third inclined surface 213, and the fourth inclined surface 214. The first inclined surface 211, the second inclined surface 212, the third inclined surface 213, and the fourth inclined surface 214 can limit the position of the first push rod 210, and at the same time, can improve the structure of the first push rod 210, so that the movement position of the first push rod 210 can be precisely controlled.

[0040] Preferably, the inclination angle of the first guide groove 215 is between 5 and 30°, and the length of the first guide groove 215 is greater than the lengths of the third inclined surface 213 and the fourth inclined surface 214. This design ensures that the first guide block 217 has sufficient movement space within the first guide groove 215, and is also more conducive to assembly. The inclination angle of the first guide groove 215 can be any value among 3°, 5°, 8°, 10°, 12°, 15°, 25°, and 30°.

[0041] Preferably, the cross-section of the first guide block 217 is one of the following: dovetail, elliptical, circular, U-shaped, or rectangular. In this embodiment, the cross-section of the first guide block 217 is a semi-circular shape, that is, slightly larger than a semicircle. This design allows for a more precise fit between the first guide block 217 and the first guide groove 215, and ensures that they will not fall off after assembly, resulting in good stability.

[0042] Preferably, the lower mold 20 further includes a second insert 220; the second insert 220 is disposed beside the lower mold core 22; the second insert 220 is disposed on the side slider 221; the side slider 221 is provided with a first guide hole at an inclination; the top of the second ejector rod 223 passes through the first guide hole; the second ejector rod 223 can drive the second insert 220 to close on the lower mold core 22. Second limiting blocks 222 are provided on both sides of the side slider 221, the second limiting blocks 222 press against the side slider 221, and the side slider 221 can slide on the second limiting blocks 222. After the upper mold core 12 and the lower mold core 22 are closed, a cavity is formed inside, and the product is formed in the cavity. The second insert 220 allows the product to be formed into other shapes. The top of the second ejector rod 223 is also inclined; when the mold is closed, as the second ejector rod 223 moves upward, the top of the second ejector rod 223 moves in the first guide hole, causing the second insert 220 to close on the lower mold core 22. When the second ejector pin 223 moves downward, the second insert 220 moves away from the lower mold core 22. The second limit block 222 can control the movement position of the side slider 221 to prevent it from deviating.

[0043] Preferably, the lower mold core 22 is further provided with a third insert 224 and a fourth insert 225; the lower mold core 22 is provided with an upwardly inclined second guide hole; the third insert 224 can be lifted out of the second guide hole. The third insert 224 is also inclined, and when the third insert 224 is lifted, it can be pushed outwards, and when the third insert 224 is lowered, it can be retracted inwards. The fourth insert 225 is also slightly inclined. Therefore, the first insert, the second insert 220, the third insert 224, and the fourth insert 225 are all very conducive to demolding and can effectively prevent product damage.

[0044] Preferably, the upper mold 10 further includes a sprue plate 13, a runner plate 14, and a heating plate 15; the sprue plate 13 is provided with an injection nozzle 16; the heating plate 15 is provided with a curved heating strip 17; the injection nozzle 16 communicates with the runner on the runner plate 14; the distribution nozzle on the runner plate 14 communicates with the mold cavity. The runner plate 14 divides the main nozzle into two or more parts, providing injection molding / die casting material to one or more mold cavities. The heating strip 17 is an electric heating strip, which can prevent the raw material from cooling. The injection molding material is injected from the injection nozzle 16, and then enters different mold cavities through the runner plate 14, allowing multiple products to be produced at once, resulting in higher efficiency. The curved heating strip 17 ensures heating efficiency and heating quality.

[0045] Preferably, the upper mold 10 further includes a lower mold 20, which includes a lower mold base 23, a top plate 24 disposed on the lower mold base 23, and an ejector plate 25; the lower mold plate 21 is disposed on the lower mold base 23; the ejector plate 25 is disposed on the top plate 24; ejector pins 26 are disposed on the ejector plate 25; ejector pins 26 are disposed on the center, periphery, and left and right sides of the lower mold core 22. When the top plate 24 is pushed upward, the ejector pins 26 eject the product from the cavity. The ejector pins 26, disposed on the center, periphery, and left and right sides of the lower mold core 22, allow the ejector pins 26 to simultaneously eject the product from multiple positions, ensuring demolding quality and efficiency.

[0046] In summary, the key design feature of this invention is that its first ejector rod 210 can be equipped with one or more first inserts 216. The first ejector rod 210 can drive the movement of multiple first inserts. This structure simplifies the mold structure, facilitates mold layout, simplifies assembly, and reduces mold costs.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A watch case mold, comprising an upper mold and a lower mold, wherein the upper mold and the lower mold can be closed together, characterized in that: The upper mold includes an upper template and an upper mold core set on the upper template; The lower mold includes a lower template, a lower mold core disposed on the lower template, a first insert disposed on the lower mold core, and a first ejector pin disposed on the lower mold core; The first ejector pin is provided with at least one first guide groove; the first phase insert is provided with a first guide block and a first limiting block; the first phase insert is slidably disposed on the first ejector pin, the first guide block slides in the first guide groove; the first limiting block slides in the first limiting groove on the lower mold core.

2. The watch case mold according to claim 1, characterized in that: The top cross-sectional area of ​​the first ejector pin gradually decreases from top to bottom; the first guide groove is inclined toward the center line of the lower mold core.

3. A watch case mold according to claim 1, characterized in that: The front of the top of the first push rod is provided with a first inclined surface; the back of the top of the first push rod is provided with a second inclined surface; the left edge of the top of the first push rod is provided with a third inclined surface; and the right edge of the top of the first push rod is provided with a fourth inclined surface.

4. A watch case mold according to claim 3, characterized in that: The inclination angle of the first guide chute is between 5 and 30°, and the length of the first guide chute is greater than the length of the third and fourth inclined surfaces.

5. A watch case mold according to claim 1, characterized in that: The cross-section of the first guide block is one of the following: swallowtail, elliptical, circular, U-shaped, or rectangular.

6. A watch case mold according to claim 1, characterized in that: The lower mold also includes a second insert; the second insert is disposed on the side of the lower mold core; the second insert is disposed on the side slider; the side slider is provided with a first guide hole at an angle; the top of the second ejector rod passes through the first guide hole; the second ejector rod can drive the second insert to close on the lower mold core.

7. A watch case mold according to claim 6, characterized in that: The side slider is provided with second limiting blocks on both sides. The second limiting blocks press down on the side slider, and the side slider can slide on the second limiting blocks.

8. A watch case mold according to claim 6 or 7, characterized in that: The lower mold core is also provided with a third insert; the lower mold core is provided with an upwardly inclined second guide hole; the third insert can be lifted out from the second guide hole.

9. A watch case mold according to claim 1, characterized in that: The upper mold also includes a sprue plate, a runner plate, and a heating plate; the sprue plate is provided with a sprue nozzle; the heating plate is provided with a curved heating strip; the sprue nozzle is connected to the runner on the runner plate; the sprue nozzle on the runner plate is connected to the cavity.

10. A watch case mold according to claim 1, characterized in that: The upper mold also includes a lower mold base, a top plate and an ejector plate disposed on the lower mold base; the lower mold plate is disposed on the lower mold base; the ejector plate is disposed on the top plate; ejector pins are disposed on the ejector plate; ejector pins are disposed in the middle, around the edges and on the left and right sides of the lower mold core.

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