PVD (Physical Vapor Deposition) coating jig for small workpieces

Abstract

The utility model relates to a PVD coating jig for small workpieces, and belongs to the technical field of PVD coating jigs, the PVD coating jig comprises a PVD coating jig body, a mold positioning column is arranged at the top of the PVD coating jig body, arched handles are arranged on the left side and the right side of the PVD coating jig body, and a positioning structure and an adjusting structure are arranged on the PVD coating jig body. According to the PVD coating jig for the small workpiece, the small cylindrical workpiece is connected to four arc-shaped plates in a sleeving mode, a connecting plate in a connecting part is used for supporting the cylindrical workpiece, and a control handle is rotated to drive a transverse bevel gear to rotate, so that a threaded rod is driven to rotate, and an abutting column is controlled to move upwards; the limiting component is extruded by the movable abutting column, so that the four arc-shaped plates move towards the opposite sides, the four arc-shaped plates abut against the inner wall of the cylindrical workpiece, the cylindrical workpiece is stably fixed, the outer surface of the cylindrical workpiece is prevented from being shielded, and the PVD coating procedure is conveniently completed at a time.

Description

Technical Field

[0001] This utility model relates to the field of PVD coating fixture technology, specifically a PVD coating fixture for small workpieces. Background Technology

[0002] A PVD coating fixture is a specialized tool used to place and fix small workpieces, enabling them to receive coating treatment accurately and stably in PVD coating equipment. Its main function is to ensure that the workpiece is in the appropriate position and orientation during the coating process, guaranteeing the uniformity and adhesion of the coating and meeting specific coating process requirements. It also facilitates batch processing of multiple workpieces, improving production efficiency. Common types of PVD coating fixtures include flat fixtures, rotary fixtures, frame fixtures, and combination fixtures. Before use, the fixture must be thoroughly cleaned to remove surface oil, dust, impurities, etc., as these contaminants may affect the fit between the workpiece and the fixture and the quality of the coating.

[0003] In current technologies, most PVD coating fixtures use positioning grooves to fix the workpiece. However, when performing PVD coating on small cylindrical workpieces, inserting one end of the cylindrical workpiece into the positioning groove will cause part of the surface of the cylindrical workpiece to be located inside the positioning groove. This makes it impossible to complete the treatment of the entire surface of the cylindrical workpiece in one PVD coating. Moreover, positioning grooves of different diameters are required for cylindrical workpieces of different sizes. Therefore, a PVD coating fixture for small workpieces is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a PVD coating fixture for small workpieces. It has the advantage of being able to perform PVD coating on cylindrical workpieces of different sizes. It solves the problem that most PVD coating fixtures use positioning grooves to fix the workpiece, but when performing PVD coating on some small cylindrical workpieces, inserting one end of the cylindrical workpiece into the positioning groove will cause part of the surface of the cylindrical workpiece to be located inside the positioning groove, making it impossible to complete the treatment of the entire surface of the cylindrical workpiece in one PVD coating. Moreover, different diameter positioning grooves are required for cylindrical workpieces of different sizes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a PVD coating fixture for small workpieces, comprising a PVD coating fixture, wherein a mold positioning column is provided on the top of the PVD coating fixture, arched handles are provided on the left and right sides of the PVD coating fixture, and a positioning structure and an adjustment structure are provided on the PVD coating fixture.

[0006] The positioning structure includes a support frame fixedly mounted on a PVD coating fixture. Four arc-shaped plates for fixing round workpieces are slidably mounted inside the support frame. Limiting components are provided on the four arc-shaped plates. An installation frame is fixedly mounted inside the PVD coating fixture. A threaded rod with one end penetrating through and extending between the four arc-shaped plates is rotatably mounted on the inner bottom wall of the installation frame. An abutment post for controlling the movement of the four arc-shaped plates is threaded onto the outer surface of the threaded rod.

[0007] Furthermore, the adjustment structure includes a transverse bevel gear fixedly mounted on the outer surface of the threaded rod, a control handle with one end penetrating through and extending to the back of the PVD coating fixture is rotatably mounted inside the mounting frame, and a connecting component is provided on the support frame to limit the movement trajectory of the four arc-shaped plates.

[0008] Furthermore, the mold positioning column is fixedly installed on the top of the PVD coating fixture, and the arched handle is fixedly installed on the left and right sides of the PVD coating fixture.

[0009] Furthermore, the limiting component includes four trapezoidal blocks, which are respectively fixedly installed on the opposite side wall of the four arc-shaped plates.

[0010] Furthermore, two guide rods are fixedly installed at the bottom of the abutment post, and two limiting holes are opened at the top of the mounting frame. One end of each of the two guide rods passes through the two limiting holes and extends into the interior of the mounting frame. The inner wall of the limiting hole is slidably connected to the outer surface of the guide rod.

[0011] Furthermore, the control handle includes a connecting rod and a vertical bevel gear, the vertical bevel gear meshing with the outer surface of the horizontal bevel gear, the mounting frame and the PVD coating fixture being rotatably connected to the connecting rod, the vertical bevel gear being fixedly mounted on the outer surface of the connecting rod, and one end of the connecting rod penetrating and extending to the outside of the PVD coating fixture.

[0012] Furthermore, the connecting component includes four connecting plates and four guide grooves. The four connecting plates are respectively fixedly connected to four arc-shaped plates, and the four guide grooves are all opened on the top of the support frame. The outer surface of the connecting plate is slidably connected to the inner wall of the guide groove.

[0013] Furthermore, a handwheel located on the back of the PVD coating fixture is fixedly installed on the outer surface of the connecting rod, and the number of the positioning structure and the adjustment structure are both two and are symmetrically distributed on the PVD coating fixture.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This PVD coating fixture for small workpieces, equipped with positioning and adjustment structures, allows small cylindrical workpieces to be fitted onto four arc-shaped plates. The connecting plates in the connecting components support the cylindrical workpiece. Rotating the control handle rotates the transverse bevel gear, which in turn rotates the threaded rod and controls the upward movement of the abutment column. The moving abutment column presses against the limiting component, causing the four arc-shaped plates to move to opposite sides. These plates then abut against the inner wall of the cylindrical workpiece, achieving stable fixation and preventing obstruction of the workpiece's outer surface. This facilitates a single PVD coating process, enhancing the practicality of this PVD coating fixture for small workpieces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 1 The front view;

[0019] Figure 4 This is a perspective view of the structural support frame, connecting components, and arc-shaped plate of this utility model.

[0020] In the diagram: 1. PVD coating fixture; 2. Mold positioning post; 3. Arched handle; 41. Support frame; 42. Arc plate; 43. Limiting component; 44. Mounting frame; 45. Threaded rod; 46. Abutment post; 47. Horizontal bevel gear; 48. Control handle; 49. Connecting component. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1 to 4 The PVD coating fixture for small workpieces in this embodiment includes a PVD coating fixture 1. A mold positioning post 2 is provided on the top of the PVD coating fixture 1. Arched handles 3 are provided on the left and right sides of the PVD coating fixture 1. The PVD coating fixture 1 is provided with a positioning structure and an adjustment structure. The mold positioning post 2 is fixedly installed on the top of the PVD coating fixture 1, and the arched handles 3 are fixedly installed on the left and right sides of the PVD coating fixture 1.

[0023] Example 1: Please refer to Figures 1 to 4 In this embodiment, the positioning structure includes a support frame 41 fixedly installed on the PVD coating fixture 1. Four arc-shaped plates 42 for fixing round workpieces are slidably installed inside the support frame 41. Limiting components 43 are provided on the four arc-shaped plates 42. The limiting components 43 include four trapezoidal blocks. The four trapezoidal blocks are fixedly installed on opposite side walls of the four arc-shaped plates 42, so as to facilitate the movement of the arc-shaped plates 42 by using the trapezoidal blocks. An installation frame 44 is fixedly installed inside the PVD coating fixture 1. A threaded rod 45 is rotatably installed on the inner bottom wall of the installation frame 44, with one end penetrating and extending between the four arc-shaped plates 42. The outer surface of the threaded rod 45 is threaded with abutment posts 46 for controlling the movement of the four arc-shaped plates 42, so that rotating the threaded rod 45 can control the up and down movement of the abutment posts 46.

[0024] Two guide rods are fixedly installed at the bottom of the abutment post 46, and two limiting holes are opened at the top of the mounting frame 44. One end of each guide rod passes through the two limiting holes and extends into the interior of the mounting frame 44. The inner wall of the limiting hole is slidably connected to the outer surface of the guide rod, thereby restricting the vertical movement of the abutment post 46.

[0025] By adopting the above technical solution, the threaded rod 45 is rotated by the adjustment structure, which causes the abutment post 46 connected to the threaded surface of the threaded rod 45 to slide upward. The moving abutment post 46 presses against the four trapezoidal blocks in the limiting component 43, thereby controlling the four arc plates 42 to move to opposite sides. The four arc plates 42 then abut against the inner wall of the cylindrical workpiece, thereby fixing the cylindrical workpiece and avoiding obstruction of the outer surface of the cylindrical workpiece.

[0026] Example 2: Please refer to Figures 1 to 4 In this embodiment, the adjustment structure includes a transverse bevel gear 47 fixedly mounted on the outer surface of the threaded rod 45. A control handle 48 is rotatably mounted inside the mounting frame 44, with one end penetrating and extending to the back of the PVD coating fixture 1. The control handle 48 includes a connecting rod and a vertical bevel gear. The vertical bevel gear meshes with the outer surface of the transverse bevel gear 47. The mounting frame 44 and the PVD coating fixture 1 are rotatably connected to the connecting rod. The vertical bevel gear is fixedly mounted on the outer surface of the connecting rod. One end of the connecting rod penetrates and extends to the outside of the PVD coating fixture 1, facilitating the rotation of the vertical bevel gear to drive the transverse bevel gear 47 to rotate. A connecting component 49 is provided on the support frame 41 to limit the movement trajectory of the four arc plates 42. The connecting component 49 includes four connecting plates and four guide grooves. The four connecting plates are fixedly connected to the four arc plates 42 respectively. The four guide grooves are all opened at the top of the support frame 41. The outer surface of the connecting plate is slidably connected to the inner wall of the guide groove to limit the movement trajectory of the four arc plates 42.

[0027] The connecting rod has a handwheel fixedly installed on the back of the PVD coating fixture 1. There are two positioning structures and two adjustment structures, which are symmetrically distributed on the PVD coating fixture 1. This facilitates rotating the handwheel and driving the control handle 48 to rotate, and enables the PVD coating process to be performed on multiple cylindrical workpieces.

[0028] By adopting the above technical solution, the cylindrical workpiece is sleeved on the outer surface of four arc plates 42, the cylindrical workpiece is supported by four connecting plates in the connecting component 49, the connecting rod in the rotating control handle 48 is rotated, and the threaded rod 45 is rotated by the meshing of the outer surfaces of the vertical bevel gear and the horizontal bevel gear 47.

[0029] The working principle of the above embodiments is as follows:

[0030] This PVD coating fixture for small workpieces involves fitting a cylindrical workpiece onto the outer surfaces of four arc-shaped plates 42 during use. The cylindrical workpiece is supported by four connecting plates in the connecting component 49. Rotating the connecting rod in the control handle 48 and engaging the outer surfaces of the vertical and horizontal bevel gears 47 causes the threaded rod 45 to rotate. This causes the threaded abutment post 46 on the outer surface of the threaded rod 45 to slide upward, pressing the moving abutment post 46 against the four trapezoidal blocks in the limiting component 43. This controls the four arc-shaped plates 42 to move to opposite sides, thus using the four arc-shaped plates 42 to abut against the inner wall of the cylindrical workpiece, thereby fixing the cylindrical workpiece and preventing obstruction of the outer surface of the cylindrical workpiece.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVD coating jig for small workpieces, comprising a PVD coating jig (1), characterized in that: The top of the PVD coating tool (1) is provided with a mold positioning column (2), and the left and right sides of the PVD coating tool (1) are provided with arc-shaped handles (3). The PVD coating tool (1) is provided with a positioning structure and an adjusting structure. The positioning structure comprises a support frame (41) fixedly installed on the PVD coating tool (1), four arc-shaped plates (42) for fixing round workpieces are slidably installed in the support frame (41), limiting components (43) are arranged on the four arc-shaped plates (42), an installation frame (44) is fixedly installed in the PVD coating tool (1), a threaded rod (45) having one end penetrating through and extending between the four arc-shaped plates (42) is rotatably installed on the inner bottom wall of the installation frame (44), and abutting columns (46) for controlling the movement of the four arc-shaped plates (42) are threadedly installed on the outer surface of the threaded rod (45).

2. The PVD coating jig for small workpieces according to claim 1, characterized in that: The adjusting structure comprises a transverse bevel gear (47) fixedly installed on the outer surface of the threaded rod (45), a control handle (48) having one end penetrating through and extending to the back of the PVD coating tool (1) is rotatably installed in the installation frame (44), and connecting components (49) for limiting the movement trajectory of the four arc-shaped plates (42) are arranged on the support frame (41).

3. The PVD coating jig for small workpieces according to claim 1, characterized in that: The mold positioning column (2) is fixedly installed on the top of the PVD coating tool (1), and the arc-shaped handles (3) are fixedly installed on the left and right sides of the PVD coating tool (1).

4. The PVD coating jig for small workpieces according to claim 1, characterized in that: The limiting components (43) comprise four trapezoidal blocks, and the four trapezoidal blocks are fixedly installed on the opposite side walls of the four arc-shaped plates (42), respectively.

5. The PVD coating jig for small workpieces according to claim 1, characterized in that: The bottom of the abutting column (46) is fixedly installed with two guide rods, two limiting holes are formed in the top of the installation frame (44), one end of each of the two guide rods penetrates through the two limiting holes and extends into the installation frame (44), and the inner wall of the limiting hole is slidably connected with the outer surface of the guide rod.

6. The PVD coating jig for small workpieces according to claim 2, characterized in that: The control handle (48) comprises a connecting rod and a vertical bevel gear, the vertical bevel gear is engaged with the outer surface of the transverse bevel gear (47), the installation frame (44) and the PVD coating tool (1) are rotatably connected with the connecting rod, the vertical bevel gear is fixedly installed on the outer surface of the connecting rod, and one end of the connecting rod penetrates through and extends to the outside of the PVD coating tool (1).

7. The PVD coating jig for small workpieces according to claim 2, characterized in that: The connecting components (49) comprise four connecting plates and four guide grooves, the four connecting plates are fixedly connected with the four arc-shaped plates (42), respectively, and the four guide grooves are formed in the top of the support frame (41). The outer surface of the connecting plate is slidably connected with the inner wall of the guide groove.

8. The PVD coating jig for small workpieces according to claim 6, characterized in that: A hand wheel is fixedly installed on the outer surface of the connecting rod and located at the back of the PVD coating tool (1), and the number of the positioning structure and the adjusting structure is two and they are symmetrically distributed on the PVD coating tool (1).

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