A fixing jig for physical vapor deposition coating of watch case

Abstract

The utility model discloses a kind of fixed jigs for watchcase physical vapor deposition coating, including hanging rod, equidistantly set up shielding assembly on hanging rod, shielding assembly outside is provided with watchcase main body, shielding assembly is connected between through positioning assembly, shielding assembly is provided with guiding component, shielding assembly and positioning assembly between still be provided with circulation component.The utility model shielding assembly can effectively shield the area that watchcase main body inside does not need to be coated, avoid coating raw material adhesion, guarantee the realization of product appearance surface color precision and heterochromatic control requirement, improve product quality consistency, circulation component can form liquid flow channel, promote the smooth discharge of liquid in coating and cleaning process, reduce the residue of liquid in jig periphery, to improve coating uniformity and cleaning effect;In drying stage, the channel structure can also guide gas flow, assist drying process, shorten processing cycle.

Description

Technical Field

[0001] This utility model relates to the field of watch case coating technology, specifically a fixture for physical vapor deposition coating of watch cases. Background Technology

[0002] During the manufacturing process, the watch case needs to be coated with a decorative coating using physical vapor deposition. In the manufacturing process, a fixture is required to assemble and fix the watch case before coating. This product has strict requirements for the color accuracy of the exterior surface and strict standards for controlling areas with different colors.

[0003] However, existing fixtures have significant technical defects in practical applications: they fail to effectively shield the non-coated areas of the watch case, causing coating materials to easily adhere to the non-coated areas in subsequent coating processes, resulting in surface quality defects in the product; in addition, the fixture structure design is not conducive to liquid flow in the coating and cleaning processes, causing liquid residue around the fixture, which directly affects the coating uniformity and cleaning effect. Utility Model Content

[0004] The purpose of this invention is to provide a fixture for physical vapor deposition coating of watch cases, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixing fixture for physical vapor deposition coating of watch cases, including a hanging rod, shielding components are equidistantly arranged on the hanging rod, a watch case body is arranged outside the shielding components, adjacent shielding components are connected by positioning components, a guide component is arranged inside the shielding components, and a flow component is arranged between the shielding components and the positioning components.

[0006] Preferably, in order to shield the uncoated areas and ensure the quality and effect of the coating, the shielding component includes an upper shielding plate mounted on the hanging rod, a lower shielding plate below the upper shielding plate, a support ring matching the lower shielding plate below the upper shielding plate, and through holes matching the hanging rod in the middle of both the upper and lower shielding plates.

[0007] Preferably, in order to facilitate the splicing and assembly of the upper and lower cover plates and to facilitate the covering of the main body of the watch case, the guide assembly includes a guide post set under the upper cover plate, a guide hole matching the guide post opened under the lower cover plate, and a pull plate set at the bottom of the lower cover plate.

[0008] Preferably, in order to support the shielding component and ensure that adjacent watch case bodies maintain a safe distance without affecting coating, cleaning and other processing, the positioning component includes positioning rings equidistantly arranged on the hanging rod, and the positioning rings and the shielding component are distributed alternately.

[0009] Preferably, in order to ensure that the liquid flows down from the notch and the arc-shaped groove to avoid residue, and to allow gas to flow through it during the drying process to assist drying, the flow component includes arc-shaped grooves equidistantly opened on the periphery of the upper and lower baffles, and a notch connected to the arc-shaped groove is opened on the positioning ring.

[0010] Preferably, in order to facilitate the positioning and fixing of the upper cover, retaining rings are symmetrically provided at both ends of the main body of the watch case, and the retaining rings are matched with the upper cover.

[0011] Preferably, in order to provide support for the shielding components and positioning rings assembled on the hanging rod, and to facilitate the overall assembly and connection of the hanging rod and subsequent processing such as coating and cleaning, a limiting plate is provided at the bottom of the hanging rod. The limiting plate matches the positioning ring at the bottommost end, and a limiting post is also provided under the limiting plate of the hanging rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) The shielding component adopts a structure in which the upper shield and the lower shield are spliced ​​together by a support ring. With the matching design of the through hole and the hanging rod, it can effectively shield the area inside the main body of the case that does not need to be coated, avoid the adhesion of coating materials, ensure the color accuracy of the product appearance and the achievement of the requirements for color control, and improve the consistency of product quality. The flow component forms a liquid flow channel through the connection design of the arc groove on the periphery of the upper and lower shields and the notch of the positioning ring, which promotes the smooth discharge of liquid during the coating and cleaning process, reduces the liquid residue around the fixture, and thus improves the coating uniformity and cleaning effect. In the drying stage, this channel structure can also guide the gas flow, assist the drying process, and shorten the processing cycle. (2) The positioning component ensures that the adjacent watch body maintains a safe distance through the staggered distribution design of the positioning ring and the shielding component, avoids mutual interference during the coating and cleaning process, and ensures the uniformity of the coating and the stability of the cleaning effect. The guide component realizes the precise splicing and convenient separation of the upper and lower shielding plates through the cooperation of the guide post and the guide hole, which improves the assembly efficiency and enhances the stability of the shielding structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a fixing fixture for physical vapor deposition coating of watch cases proposed in this utility model; Figure 2 This is a partial structural schematic diagram of a fixing fixture for physical vapor deposition coating of watch cases proposed in this utility model; Figure 3 This is a schematic diagram of the shielding component in a fixture for physical vapor deposition coating of watch cases according to the present invention. Figure 4 This is a schematic diagram of the hanging rod in a fixing fixture for physical vapor deposition coating of watch cases proposed in this utility model.

[0014] In the diagram: 11. Hanging rod; 12. Watch case body; 13. Limiting plate; 14. Limiting post; 15. Snap ring; 21. Upper cover plate; 22. Arc groove; 23. Lower cover plate; 24. Support ring; 25. Through hole; 31. Positioning ring; 32. Notch; 41. Guide post; 42. Guide hole; 43. Pull plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 This utility model provides an embodiment of a fixing fixture for physical vapor deposition coating of watch cases, including a hanging rod 11. A shielding component is equidistantly arranged on the hanging rod 11, and a watch case body 12 is arranged outside the shielding component. A limiting plate 13 is provided at the bottom end of the hanging rod 11, which matches the positioning ring 31 at the bottom end for easy support and positioning. A limiting post 14 is also provided below the limiting plate 13 to facilitate the installation and positioning of the hanging rod 11, and to facilitate subsequent coating, cleaning, drying, and other operations. This is a relatively mature technology and will not be described in detail here. The shielding component includes an upper shielding plate 21 on the hanging rod 11, a lower shielding plate 23 below the upper shielding plate 21, and a support ring 24 matching the lower shielding plate 23 below the upper shielding plate 21. Both the upper shielding plate 21 and the lower shielding plate 23 have through holes 25 in the middle that match the hanging rod 11 for easy splicing. The upper cover 21 and lower cover 23 are fitted onto the hanging rod 11. Through the cooperation of the upper cover 21, the support ring 24 and the lower cover 23, the parts of the watch case body 12 that do not need to be coated can be covered without affecting the subsequent coating process. The two ends of the watch case body 12 are symmetrically provided with retaining springs 15, which match the upper cover 21. The two ends of the retaining springs 15 are inserted into the strap connection holes of the watch case body 12, and then the retaining springs 15 and the upper cover 21 are pressed together for positioning and fixation. At the same time, it is also convenient to remove the retaining springs 15 after processing. The shielding assembly is provided with a guide assembly, which includes a guide post 41 set under the upper cover 21. The lower cover 23 has a guide hole 42 that matches the guide post 41. The bottom of the lower cover 23 is also provided with a pull plate 43 to facilitate the assembly and positioning of the lower cover 23 and the upper cover 21, as well as subsequent separation.

[0017] Please see Figures 1-4To avoid mutual interference between adjacent case bodies 12, and to ensure proper liquid flow during coating or cleaning, and airflow during drying, adjacent shielding components are connected by positioning components. The positioning components include positioning rings 31 equidistantly positioned on the hanging rod 11. The positioning rings 31 and shielding components are staggered, providing support for the shielding components while maintaining appropriate spacing to avoid interfering with coating, cleaning, and drying operations. The positioning rings 31 can be of different lengths; depending on the product being processed, a corresponding length of positioning ring 31 is fitted to ensure effective support. This is a mature technology and will not be elaborated upon here. A flow component is also provided between the shielding components and the positioning components. The flow component includes arc-shaped grooves 22 equidistantly formed on the circumferential sides of the upper shield 21 and lower shield 23. The positioning rings 31 have notches 32 communicating with the arc-shaped grooves 22. The notches 32 on the positioning rings 31 are as follows: Figure 2 As shown, when assembled onto the hanging rod 11, the arc-shaped groove 22 and the notch 32 are connected vertically, which does not affect the liquid flow during coating and cleaning, and also facilitates the flow of gas from the inside during drying, avoiding liquid residue, and also assisting in drying.

[0018] Working Principle: In use, the watch case body 12 is placed on the upper cover plate 21, and then the lower cover plate 23 is closed. The guide post 41 and guide hole 42 are used to fix it. The support ring 24 provides support and positioning, and can cover the parts of the watch case body 12 that do not need to be coated. Then, the snap ring 15 is installed at the strap connection holes at both ends of the watch case body 12. The snap ring 15 is used to position and fix the upper cover plate 21. Then, it is sleeved on the hanging rod 11 through the through hole 25. Then, a suitable positioning ring 31 is selected to provide support and positioning. The above operation is repeated to position and assemble the watch case body 12 one by one. Then, the hanging rod 11 can be assembled and positioned by the limiting post 14. Then, coating, cleaning, drying and other processes can be performed. During coating and cleaning, liquid can flow down from the notch 32 and the arc groove 22 to avoid liquid residue and ensure the coating and cleaning effect. During drying, liquid can flow from the notch 32 and the arc groove 22 to assist drying and shorten the processing time.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fixture for physical vapor deposition coating of watch cases, comprising a hanging rod (11), characterized in that: A shielding component is provided at equal intervals on the hanging rod (11). The main body of the watch case (12) is provided outside the shielding component. Adjacent shielding components are connected by a positioning component. A guide component is provided inside the shielding component. A flow component is also provided between the shielding component and the positioning component.

2. The fixture for physical vapor deposition coating of a watch case according to claim 1, characterized in that: The shielding assembly includes an upper shield (21) mounted on a hanging rod (11), a lower shield (23) mounted below the upper shield (21), a support ring (24) matching the lower shield (23) mounted below the upper shield (21), and through holes (25) matching the hanging rod (11) in the middle of both the upper shield (21) and the lower shield (23).

3. The fixture for physical vapor deposition coating of a watch case according to claim 2, characterized in that: The guide assembly includes a guide post (41) disposed under the upper cover (21), a guide hole (42) matching the guide post (41) is provided under the lower cover (23), and a pull plate (43) is also provided at the bottom of the lower cover (23).

4. The fixture for physical vapor deposition coating of a watch case according to claim 3, characterized in that: The positioning component includes positioning rings (31) equidistantly arranged on the hanging rod (11), and the positioning rings (31) and the shielding component are distributed alternately.

5. The fixture for physical vapor deposition coating of a watch case according to claim 4, characterized in that: The circulation component includes arc-shaped grooves (22) equidistantly opened on the periphery of the upper cover plate (21) and the lower cover plate (23), and the positioning ring (31) has a notch (32) that communicates with the arc-shaped grooves (22).

6. The fixture for physical vapor deposition coating of a watch case according to claim 5, characterized in that: The watch case body (12) is symmetrically provided with retaining rings (15) at both ends, and the retaining rings (15) match the upper cover (21).

7. The fixture for physical vapor deposition coating of a watch case according to claim 6, characterized in that: The bottom end of the hanging rod (11) is provided with a limiting plate (13), which matches the positioning ring (31) at the bottom end, and the hanging rod (11) is also provided with a limiting post (14) below the limiting plate (13).

Images