Vacuum coating clamping device

Abstract

The utility model relates to the technical field of vacuum coating, and discloses a vacuum coating clamping device which comprises a fixing plate, the fixing plate is rotationally sleeved with a supporting pipe, the pipe wall of the supporting pipe is symmetrically and fixedly connected with a plurality of telescopic air pipes, and the ends, away from the supporting pipe, of the telescopic air pipes located on the same side are fixedly connected with the same abutting plate. A motor rotating assembly used for driving the supporting pipe to rotate is fixedly installed at the lower end of the fixing plate, and a pressurizing mechanism is fixedly installed at the lower end of the fixing plate. The problem that the coating quality is affected by overlarge centrifugal force and vibration due to the fact that the overhigh rotating speed is not suitable for workpieces with large sizes is solved.

Description

Technical Field

[0001] This application belongs to the field of vacuum coating technology, and particularly relates to a vacuum coating clamping device. Background Technology

[0002] A vacuum coating clamping device is a device used to fix and clamp the workpiece to be coated during the vacuum coating process. The clamping device maintains a stable clamping of the workpiece in a vacuum environment, while the coating material is heated and evaporated or sputtered in the vacuum environment and deposited on the surface of the workpiece to form a coating layer.

[0003] During the vacuum coating process, the workpiece needs to be rotated to achieve uniform coating. However, if the rotation speed is fixed, for larger workpieces, too fast a rotation speed will result in excessive centrifugal force and vibration, affecting the coating quality. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by proposing a vacuum coating clamping device.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A vacuum coating clamping device includes a fixed plate, on which a support tube is rotatably sleeved. Multiple telescopic air pipes are symmetrically fixedly connected to the wall of the support tube. The ends of the multiple telescopic air pipes located on the same side away from the support tube are fixedly connected to the same abutment plate. A motor rotation assembly for driving the support tube to rotate is fixedly installed at the lower end of the fixed plate. A pressurization mechanism is fixedly installed at the lower end of the fixed plate.

[0007] Preferably, a support plate is fixedly connected to the top of the support tube.

[0008] Preferably, the pressurizing mechanism includes a pressurizing shell fixedly installed at the lower end of the fixed plate, an electric push rod fixedly inserted at the rear end of the pressurizing shell, a pressurizing piston fixedly connected to the moving end of the electric push rod, a pressurizing pipe fixedly connected to the front end of the pressurizing shell, and a pressurizing pipe at the end of the pressurizing pipe away from the pressurizing shell fixedly connected to the lower end of the support pipe through a rotary sealing joint.

[0009] Preferably, an adjusting shell is fixedly installed at the lower end of the pressurizing shell, a U-shaped linkage rod is fixedly connected to the rear side of the pressurizing piston, the end of the U-shaped linkage rod away from the pressurizing piston extends through into the adjusting shell, a feedback resistor rod is fixedly installed on the inner wall of the adjusting shell, and a feedback conductive contact plate that is electrically in contact with the feedback resistor rod is fixedly connected to the rod wall of the end of the U-shaped linkage rod located inside the adjusting shell.

[0010] Preferably, the outer surface of the contact plate is covered with a layer of anti-slip extrusion pad.

[0011] Preferably, the feedback conductive contact and the feedback resistor are connected in series in the power supply circuit of the motor rotation assembly.

[0012] Compared with the prior art, this application provides a vacuum coating clamping device, which has the following advantages:

[0013] 1. This vacuum coating clamping device, through a support tube, telescopic air tube, and contact plate, covers the workpiece to be coated outside the support tube, so that the support plate at the top of the support tube supports the entire workpiece. The electric push rod pushes the pressure piston to move inside the pressure chamber, thereby pressurizing the air inside the pressure chamber to the support tube through the pressure tube, and then pushing the contact plate outward through multiple telescopic air tubes. The multiple contact plates are used to stably limit and fix the workpiece. The motor rotation assembly drives the support tube to rotate the workpiece, thereby realizing a uniform coating operation.

[0014] 2. This vacuum coating clamping device, through its adjustable shell, feedback conductive contact plate, and feedback resistor bar, allows for greater air volume to be supplied to the workpiece as the workpiece size increases. This ensures the extension and retraction of the contact plate, resulting in a greater distance the electric push rod pushes the pressure piston. The pressure piston, in conjunction with the U-shaped linkage rod, causes the feedback conductive contact plate to slide a greater distance on the feedback resistor bar, leading to a higher resistance value. Furthermore, the feedback conductive contact plate and feedback resistor bar are connected in series in the power supply circuit of the motor rotation assembly, which is a DC motor. This reduces the power supply current to the motor rotation assembly, lowering its driving speed and preventing excessively high rotation speeds from being unsuitable for larger workpieces, thus avoiding excessive centrifugal force and vibration that could negatively impact coating quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a vacuum coating clamping device proposed in this application;

[0016] Figure 2 This is a partially enlarged structural schematic diagram of a vacuum coating clamping device proposed in this application.

[0017] In the diagram: 1. Fixed plate; 2. Support pipe; 3. Telescopic air pipe; 4. Contact plate; 5. Motor rotating assembly; 6. Support plate; 7. Pressurized shell; 8. Electric push rod; 9. Pressurized piston; 10. Pressurized pipe; 11. Rotary sealing joint; 12. Adjusting shell; 13. U-shaped linkage rod; 14. Feedback resistor rod; 15. Feedback conductive contact. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0019] Reference Figure 1-2 A vacuum coating clamping device includes a fixed plate 1, a support tube 2 rotatably sleeved on the fixed plate 1, multiple telescopic air pipes 3 symmetrically fixedly connected to the wall of the support tube 2, and a common abutment plate 4 fixedly connected to the end of the multiple telescopic air pipes 3 on the same side away from the support tube 2. A motor rotating assembly 5 for driving the support tube 2 to rotate is fixedly installed at the lower end of the fixed plate 1, and a pressurizing mechanism is fixedly installed at the lower end of the fixed plate 1.

[0020] A support plate 6 is fixedly connected to the top of the support tube 2.

[0021] The pressurizing mechanism includes a pressurizing shell 7 fixedly installed at the lower end of the fixed plate 1. An electric push rod 8 is fixedly inserted at the rear end of the pressurizing shell 7. A pressurizing piston 9 is fixedly connected to the moving end of the electric push rod 8. A pressurizing pipe 10 is fixedly connected to the front end of the pressurizing shell 7. The end of the pressurizing pipe 10 away from the pressurizing shell 7 is fixedly connected to the lower end of the support pipe 2 through a rotary sealing joint 11.

[0022] An adjusting shell 12 is fixedly installed at the lower end of the pressurizing shell 7. A U-shaped linkage rod 13 is fixedly connected to the rear side of the pressurizing piston 9. The end of the U-shaped linkage rod 13 away from the pressurizing piston 9 extends through into the adjusting shell 12. A feedback resistor rod 14 is fixedly installed on the inner wall of the adjusting shell 12. A feedback conductive contact 15 that is in electrical contact with the feedback resistor rod 14 is fixedly connected to the rod wall of the U-shaped linkage rod 13 located inside the adjusting shell 12.

[0023] The outer surface of the contact plate 4 is covered with a layer of non-slip extrusion pad.

[0024] The feedback conductive contact 15 and the feedback resistor 14 are connected in series in the power supply circuit of the motor rotating assembly 5.

[0025] The operating principle of this utility model is described as follows:

[0026] In this application, the workpiece to be coated is covered by the support tube 2, so that the support plate 6 at the top of the support tube 2 supports the entire workpiece. The electric push rod 8 pushes the pressure piston 9 to move inside the pressure shell 7, thereby pressurizing the air inside the pressure shell 7 through the pressure pipe 10 into the support tube 2, and pushing the contact plate 4 outward through multiple telescopic air pipes 3. The multiple contact plates 4 are used to stably limit and fix the workpiece. The motor rotation assembly 5 drives the support tube 2 to rotate the workpiece, realizing a uniform coating operation. When the size of the workpiece to be processed is larger, more air is needed in the telescopic air pipe 3 to ensure the telescopic range of the contact plate 4, thereby making the electric push rod 8 push the workpiece to move outward. The greater the distance that the rod 8 pushes the pressure piston 9 to move, the greater the distance that the pressure piston 9, in conjunction with the U-shaped linkage rod 13, drives the feedback conductive contact 15 to slide on the feedback resistor rod 14. This results in a greater resistance value of the feedback resistor rod 14. Furthermore, the feedback conductive contact 15 and the feedback resistor rod 14 are connected in series in the power supply circuit of the motor rotation assembly 5. Since the motor rotation assembly 5 is a DC motor, the power supply current of the motor rotation assembly 5 is reduced, which reduces the driving speed of the motor rotation assembly 5. This avoids the problem that excessively fast rotation speed is unsuitable for large workpieces, thus preventing excessive centrifugal force and vibration from affecting the coating quality.

[0027] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A vacuum coating clamping device comprising a fixed plate (1), characterized in that, The fixed plate (1) is rotatably sleeved with a support pipe (2), the pipe wall of the support pipe (2) is symmetrically and fixedly connected with a plurality of telescopic air pipes (3), the same abutting plate (4) is fixedly connected at the end of the same side of the plurality of telescopic air pipes (3) away from the support pipe (2), the lower end of the fixed plate (1) is fixedly provided with a motor rotating assembly (5) for driving the support pipe (2) to rotate, and the lower end of the fixed plate (1) is fixedly provided with a pressurizing mechanism.

2. The vacuum coating clamping device according to claim 1, wherein, The top of the support pipe (2) is fixedly connected with a supporting plate (6).

3. The vacuum coating clamping device according to claim 1, wherein, The pressurizing mechanism comprises a pressurizing shell (7) fixedly provided at the lower end of the fixed plate (1), the rear end of the pressurizing shell (7) is fixedly sleeved with an electric push rod (8), the moving end of the electric push rod (8) is fixedly connected with a pressurizing piston (9), the front end of the pressurizing shell (7) is fixedly communicated with a pressurizing pipe (10), and the end of the pressurizing pipe (10) away from the pressurizing shell (7) is fixedly communicated with the lower end of the support pipe (2) through a rotary sealing joint (11).

4. The vacuum coating clamping device according to claim 3, characterized in that, The lower end of the pressurizing shell (7) is fixedly provided with an adjusting shell (12), the rear side of the pressurizing piston (9) is fixedly connected with a U-shaped linkage rod (13), one end of the U-shaped linkage rod (13) away from the pressurizing piston (9) penetrates into the adjusting shell (12), the inner wall of the adjusting shell (12) is fixedly provided with a feedback resistance stick (14), and one end of the U-shaped linkage rod (13) in the adjusting shell (12) is fixedly connected with a feedback conductive tab (15) in electric contact with the feedback resistance stick (14).

5. The vacuum coating clamping device according to claim 1, wherein, The outer surface of the abutting plate (4) is covered with a layer of anti-skid extruded rubber pad.

6. The vacuum coating clamping device according to claim 4, wherein, The feedback conductive tab (15) and the feedback resistance stick (14) are connected in series on the power supply circuit of the motor rotating assembly (5).

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