Miniature sealing ring production die for watches

Abstract

The utility model provides a micro sealing ring production mold for a watch, and belongs to the technical field of molds. The production die for the miniature sealing ring for the watch comprises an upper die and a lower die, conical heads are arrayed on the upper die, concave cavities are arrayed on the lower die, the conical heads are attached to the conical surfaces of the concave cavities, annular cavities are formed in the conical surfaces, and each conical head is elastically connected with the upper die. In the application, each conical head which is independently and elastically connected on the upper die is independently matched with each concave cavity on the lower die, so that the precision requirement on one die and multiple cavities is reduced, the forming quality of the sealing rings in all the cavities is effectively improved, and the fine sealing rings for watches can be efficiently produced.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a mold for producing micro-sealing rings for watches. Background Art

[0002] Watches are usually equipped with O-shaped sealing rings to improve the waterproof ability of the sealing box. The O-rings are generally pressed using a one-mold multi-cavity mold, and the O-ring rubber mold is generally divided into an upper mold with a half cavity and a lower mold with a half cavity. The half cavities of the upper mold and the lower mold are exactly semicircles, which will form flash at the parting surface, making it difficult to handle.

[0003] In this regard, China's patent application number is CN201510628047.5, which discloses a production mold for processing O-rings. This solution mainly sets overflow grooves at the parting surfaces on both sides of the cavity to accommodate excess rubber, which can reduce the thickness of the flash to make the product more round and facilitate the separation of the flash.

[0004] However, in the process of implementing the technical solution in the embodiments of the present application, the inventor of the present application found that the above technology has at least the following technical problems:

[0005] The O-rings used in watches are thin and small. Due to the limitation of processing precision, it is difficult for a multi-cavity mold to ensure that each cavity can be accurately molded, resulting in poor roundness of some O-rings and difficulty in controlling the thickness of the flash. Utility Model Content

[0006] In order to make up for the above shortcomings, the present application provides a production mold for a micro-sealing ring for watches, aiming to improve the problems mentioned in the above background technology.

[0007] An embodiment of the present application provides a mold for producing micro-sealing rings for watches, including an upper mold and a lower mold, wherein the upper mold has an array of cone heads, and the lower mold has an array of concave cavities, the cone heads and the concave surfaces of the concave cavities fit together, and an annular cavity is formed on the conical surface, and each of the cone heads is elastically connected to the upper mold.

[0008] In a specific embodiment, an elastic groove is formed on the upper mold around each of the cone heads.

[0009] In the above implementation process, the cone head and the upper mold are integrally formed, and the elastic groove is used to form an elastic connection between the cone head and the upper mold, which can be automatically adjusted according to the position of the cavity to ensure that each cone head and cavity can be accurately molded.

[0010] In a specific embodiment, a positioning pin is provided between the upper die and the lower die.

[0011] In the above implementation process, the positioning pins are used to ensure the overall alignment of the upper mold and the lower mold.

[0012] In a specific embodiment, a gasket is provided between the upper die and the lower die.

[0013] In the above implementation process, the gasket is used to control the gap between the upper mold and the lower mold, so that excess rubber can flow along the gap to fill it, and all O-rings in a mold can be connected together to facilitate removal from the mold. In this embodiment, the gasket is fixed on the lower mold.

[0014] In a specific embodiment, overflow grooves are provided at the 45 degree and 225 degree positions of the cavity.

[0015] In the above implementation process, the overflow glue tank is used to store excess glue to improve the roundness of the product and facilitate the removal of flash.

[0016] In a specific embodiment, a gap is left on the parting surface of the cavity at 45 degrees, and the parting surface on the lower side of the cavity is tightly fitted.

[0017] In the above implementation process, the flash flows upward along the gap but is not easy to flow downward, so that the parting surface on the lower side of the cavity can fit tightly and is less affected by the flash, which is beneficial to the positioning of the cone head and the concave cavity.

[0018] In a specific embodiment, the cavity is close to the root of the cone head.

[0019] In the above implementation process, the mold cavity is close to the root of the cone head, so the corresponding close fitting surface between the cone head and the cavity will be increased, which is further beneficial to the cone surface positioning of the cone head and the cavity.

[0020] In a specific embodiment, rib grooves are provided at the 135 degree and 315 degree positions of the cavity.

[0021] In the above implementation process, the two obliquely symmetrical flashes in the prior art must be cleaned up, otherwise when inserted into the watch, the O-ring will be twisted and deformed due to the presence of the flash, affecting the sealing effect. The rib groove in the present application allows the O-ring to form ribs at the corresponding positions, and the flash formed with the parting surface presents an X-shaped stability structure, thereby reducing the requirements for flash residue, which is beneficial to reducing production costs.

[0022] Compared with the prior art, the beneficial effects of the present application are: by utilizing each independently elastically connected cone head on the upper mold to independently adapt to each concave cavity on the lower mold, the precision requirements for one mold with multiple cavities are reduced, the molding quality of the sealing rings in all cavities is effectively improved, and it is conducive to the efficient production of small sealing rings for watches. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 Schematic diagram of a production mold for a micro-seal ring for a watch provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the cross-sectional structure of a production mold for a micro-seal ring for a watch provided in an embodiment of the present application;

[0026] Figure 3 Provided for the implementation of this application Figure 2 A partial enlarged schematic diagram in the middle;

[0027] Figure 4 A schematic diagram of the upper mold structure provided for an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the lower mold structure provided for an implementation manner of the present application.

[0029] In the figure: 10 - upper die; 20 - lower die; 30 - cone head; 40 - concave cavity; 50 - cavity; 60 - elastic groove; 70 - positioning pin; 80 - gasket; 90 - overflow groove; 100 - rib groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0031] See also Figure 1-Figure 5 The present application provides a production mold for a micro seal ring for a watch, including an upper mold 10 and a lower mold 20. The upper mold 10 is provided with a cone head 30, and the lower mold 20 is provided with a cavity 40. The cone heads 30 and the cavity 40 are fitted with each other, and an annular cavity 50 is provided on the cone surface. Each cone head 30 is elastically connected to the upper mold 10. The cone heads 30 independently elastically connected on the upper mold 10 are independently adapted to each cavity 40 on the lower mold 20, which reduces the precision requirements for one mold with multiple cavities, effectively improves the molding quality of the seal rings in all cavities 50, and is conducive to the efficient production of small seal rings for watches.

[0032] See also Figure 1-Figure 5The upper mold 10 is provided with an elastic groove 60 around each cone head 30. The cone head 30 is integrally formed with the upper mold 10, and the elastic groove 60 is used to form an elastic connection between the cone head 30 and the upper mold 10, and can be automatically adjusted according to the position of the cavity 40 to ensure that each cone head 30 and the cavity 40 can be accurately molded.

[0033] See also Figure 1-Figure 5 A positioning pin 70 is provided between the upper die 10 and the lower die 20. The positioning pin 70 is used to ensure the overall alignment of the upper die 10 and the lower die 20.

[0034] See also Figure 1-Figure 5 A gasket 80 is provided between the upper mold 10 and the lower mold 20. The gasket 80 is used to control the gap between the upper mold 10 and the lower mold 20, so that the excess rubber can flow along the gap and fill it, and all the O-rings in one mold can be connected together, which is convenient for removal from the mold. In this embodiment, the gasket 80 is fixed on the lower mold 20.

[0035] See also Figure 1-Figure 5 The mold cavity 50 is provided with overflowing glue grooves 90 at the positions of 45 degrees and 225 degrees. The overflowing glue grooves 90 are used for storing excess glue to improve the roundness of the product and facilitate the removal of flash.

[0036] See also Figure 1-Figure 5 , there is a gap between the 45 degree parting surface of the cavity 50, and the parting surface on the lower side of the cavity 50 fits tightly. The flash flows upward along the gap, but is not easy to flow downward, so that the parting surface on the lower side of the cavity 50 can fit tightly, which is less affected by the flash, and is conducive to the positioning of the cone head 30 and the concave cavity 40.

[0037] See also Figure 1-Figure 5 , the cavity 50 is close to the root of the cone head 30. When the cavity 50 is close to the root of the cone head 30, the close fitting surface between the head of the cone head 30 and the cavity 40 will be increased, which is further beneficial to the positioning of the cone surface of the cone head 30 and the cavity 40.

[0038] See also Figure 1-Figure 5 The rib grooves 100 are arranged at the 135 degree and 315 degree positions of the cavity 50. In the prior art, the two obliquely symmetrical flash edges must be cleaned up, otherwise, when inserted into the watch, the O-ring will be twisted and deformed due to the presence of the flash edges, affecting the sealing effect. In the present application, the rib grooves 100 form ribs at the corresponding positions of the O-ring, and the flash edges formed by the parting surface form an X-shaped stability structure, thereby reducing the requirements for the flash edge residue, which is conducive to reducing production costs.

[0039] The working principle of the production mold for micro-sealing rings for watches is: when the upper mold 10 is molded with the lower mold 20, the positioning pin 70 is used to ensure the accuracy of the overall mold closing, and then the cone head 30 contacts and squeezes the cavity 40, and the self-centering characteristic of the cone surface is utilized, and the elastic groove 60 is matched to give the cone head 30 a certain degree of freedom, so that each cone head 30 and the cavity 40 can be accurately matched, which is beneficial to product molding, and then the upper mold 10 and the lower mold 20 clamp the gasket 80, leaving a certain gap, so that excess rubber can flow along this gap and fill it, and all O-rings in a mold can be connected together, which is convenient for removal from the mold. In summary, each independently elastically connected cone head 30 on the upper mold 10 is independently adapted to each cavity 40 on the lower mold 20, which reduces the precision requirements for one mold with multiple cavities, effectively improves the molding quality of the sealing rings in all cavities 50, and is beneficial to the efficient production of small watch sealing rings.

[0040] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, improvement or equivalent replacement made within the spirit and principle of the present application shall be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A production mold for a micro-seal ring for a watch, comprising an upper mold (10) and a lower mold (20), characterized in that: The upper mold (10) is provided with a cone head (30) in an array, and the lower mold (20) is provided with a cavity (40) in an array. The cone surfaces of the cone head (30) and the cavity (40) fit together, and an annular cavity (50) is provided on the cone surface. Each cone head (30) is elastically connected to the upper mold (10) respectively.

2. The watch micro-seal ring production mold according to claim 1, characterized in that: The upper die (10) is provided with an elastic groove (60) around each of the cone heads (30).

3. The watch micro-seal ring production mold according to claim 2, characterized in that: A positioning pin (70) is provided between the upper die (10) and the lower die (20).

4. The watch micro-seal ring production mold according to claim 3, characterized in that: A gasket (80) is provided between the upper die (10) and the lower die (20).

5. The watch micro-seal ring production mold according to claim 4, characterized in that: The mold cavity (50) is provided with glue overflow grooves (90) at the positions of 45 degrees and 225 degrees.

6. The watch micro-seal ring production mold according to claim 5, characterized in that: A gap is left on the 45-degree parting surface of the mold cavity (50), and the parting surface on the lower side of the mold cavity (50) is tightly fitted.

7. The watch micro-seal ring production mold according to claim 6, characterized in that: The mold cavity (50) is close to the root of the cone head (30).

8. The watch micro-seal ring production mold according to claim 7, characterized in that: The mold cavity (50) is provided with rib grooves (100) at the positions of 135 degrees and 315 degrees.

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