Clamping device for coating PVD (Physical Vapor Deposition) coating on small conical surface of valve seat

Abstract

The utility model discloses a clamping device for coating a PVD (Physical Vapor Deposition) coating on a small conical surface of a valve seat. The clamping column is arranged on the chassis; the top disc is arranged on the clamping column opposite to the other side of the bottom disc; the pneumatic control mechanism is connected with the top tray and the clamping column; and the shielding block is connected with the clamping column. The clamping device for coating the PVD coating on the small conical surface of the valve seat, disclosed by the utility model, is simple to operate, is convenient to fix the valve seat, can fix a large number of valve seats at one time, and improves the coating efficiency of the valve seat.

Description

Technical Field

[0001] The utility model relates to the technical field of PVD coating application for the small conical surface of a valve seat, in particular to a clamping device for PVD coating application on the small conical surface of a valve seat. Background Technique

[0002] PVD technology refers to a technology that, under vacuum conditions, physically vaporizes the material source (solid or liquid) into gaseous atoms or molecules, or partially ionizes them into ions, and deposits a thin film with a certain special function on the substrate surface through a low-pressure gas (or plasma) process. PVD technology is one of the main surface treatment technologies. PVD coating technology is mainly divided into three categories: vacuum evaporation coating, vacuum sputtering coating, and vacuum ion coating. The main methods of physical vapor deposition include: vacuum evaporation coating, sputtering coating, arc plasma coating, ion coating, and molecular beam epitaxy, etc. The corresponding vacuum coating equipment includes vacuum evaporation coating machines, vacuum sputtering coating machines, and vacuum ion coating machines. With the improvement of deposition methods and technologies, physical vapor deposition technology can not only deposit metal films, alloy films, but also deposit compounds, ceramics, semiconductors, polymer films, etc.

[0003] The Chinese utility model patent with the application number CN202222384815.7 discloses a valve seat alloy spraying fixture tooling for valves, including a clamping seat. At least two stepped jaws are further provided on the clamping seat. Each stepped jaw is movably inserted into the clamping seat through an adjusting screw. A rotating disk is provided at the bottom of the clamping seat. The rotating disk is wound with a pulley and is linked with a motor to rotate. A plurality of anti-disengagement devices, which have the same shape as the outer peripheral surface of the valve seat and prevent the valve seat from disengaging during rotation, are further provided at the clamping end of each stepped jaw. A placement groove for spraying the bottom of the valve seat when the stepped jaws clamp the valve seat is further provided at the center of the clamping seat, realizing tight clamping of the valve seat. However, this fixture tooling can only clamp one valve seat at a time, resulting in low coating application efficiency of the valve seat and being unable to meet the coating requirements of a large number of valve seats. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a clamping device for PVD coating application on the small conical surface of a valve seat, which is convenient for fixing the valve seat, can fix a larger number of valve seats at one time, and improves the coating application efficiency of the valve seat.

[0005] The purpose of the utility model is achieved in the following way: A clamping device for PVD coating application on the small conical surface of a valve seat includes:

[0006] A chassis;

[0007] A clamping column, which is arranged on the chassis;

[0008] The top plate is provided on the clamping post on the other side relative to the chassis;

[0009] The pneumatic control mechanism is connected to the top plate and the clamping post;

[0010] The shielding block is connected to the clamping post.

[0011] As an alternative solution of the technical solution of the present utility model, a limiting block is provided on the shielding block close to one side of the clamping post, and the limiting block is made of a metal material that can be attracted by a magnet;

[0012] A limiting hole is provided on the outer side of the clamping post, and the limiting block is connected to the limiting hole;

[0013] A magnet is provided inside the clamping post for attracting the limiting block.

[0014] As an alternative solution of the technical solution of the present utility model, the pneumatic control mechanism includes:

[0015] A connecting pipe is connected to the top plate;

[0016] The main pipe is provided inside the clamping post and is connected to the connecting pipe;

[0017] A thin pipe has one end connected to the main pipe and the other end extending out of the clamping post;

[0018] A suction cup is connected to the outer side of the clamping post and is connected to the thin pipe.

[0019] The beneficial effects of the present utility model are:

[0020] A clamping device for PVD coating of the small conical surface of a valve seat according to the present utility model fixes the valve seat on the suction cup by means of negative pressure adsorption; a magnet is provided inside the clamping post, and then through the cooperation of the limiting block and the limiting hole, the shielding block can be quickly installed on the outer side of the clamping post, so as to shield the uncoated part of the valve seat; after the coating is completed, the shielding block is disassembled and the negative pressure adsorption is stopped, and the valve seat automatically detaches from the suction cup, realizing simple operation, convenient fixing of the valve seat, and the ability to fix a relatively large number of valve seats at one time, improving the coating efficiency of the valve seat. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1Schematic diagram of a clamping device for PVD coating of the small conical surface of a valve seat in Embodiment 1 of the present utility model;

[0023] Figure 2 Cross-sectional view of the clamping column of a clamping device for PVD coating of the small conical surface of a valve seat in Embodiment 1 of the present utility model;

[0024] Figure 3 Enlarged view of the structure at position A of a clamping device for PVD coating of the small conical surface of a valve seat in Embodiment 1 of the present utility model.

[0025] Reference numerals:

[0026] 1, chassis; 2, clamping column; 21, limiting hole; 22, magnet; 3, top plate; 40, connecting pipe; 41, main pipe; 42, thin pipe; 43, suction cup; 5, shielding block; 51, limiting block. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or a connection through an intermediate medium, and it can also be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Embodiment 1

[0031] As Figure 1 shown, a clamping device for PVD coating of the small conical surface of a valve seat includes: a chassis 1, a clamping column 2, a top plate 3, a pneumatic control mechanism, and a shielding block 5. Among them: the clamping column 2 is arranged on the chassis 1; the top plate 3 is arranged on the clamping column 2 on the other side relative to the chassis 1; the pneumatic control mechanism is connected to the top plate 3 and connected to the clamping column 2; the shielding block 5 is connected to the clamping column 2.

[0032] As Figure 2As shown in Fig. -3, as a further solution of this embodiment, the shielding block 5 near the clamping column 2 is provided with a limiting block 51, and the limiting block 51 is made of a metal material that can be attracted by a magnet; a limiting hole 21 is provided on the outer side of the clamping column 2, and the limiting block 51 is connected to the limiting hole 21; a magnet 22 is provided inside the clamping column 2 for attracting the limiting block 51. The magnet 22 attracts the limiting block 51 and fixes the limiting block 51 in the limiting hole 21, thereby fixing the shielding block 5 on the clamping column 2.

[0033] As Figure 2 shown, as a further solution of this embodiment, the pneumatic control mechanism includes: a connecting pipe 40, a main pipe 41, a thin pipe 42, and a suction cup 43, where: the connecting pipe 40 is connected to the top plate 3; the main pipe 41 is arranged inside the clamping column 2 and is connected to the connecting pipe 40; one end of the thin pipe 42 is connected to the main pipe 41, and the other end extends out of the clamping column 2; the suction cup 43 is connected to the outer side of the clamping column 2 and is connected to the thin pipe 42. The connecting pipe 40 adjusts the thin pipe 42 to a negative pressure state through the main pipe 41, and the thin pipe 42 adjusts the suction cup 43 to a negative pressure state, so that the suction cup 43 can adsorb the valve seat.

[0034] The working process of this embodiment: First, control the suction cup 43 to be in a negative pressure state; then, place the valve seat on the suction cup 43; then, place the limiting block 51 in the limiting hole 21, and attract the limiting block 51 through the magnet 22 to fix the shielding block 5 on the clamping column 2 to shield the part of the valve seat that does not need to be coated; then, perform and complete the coating process; then, remove the shielding block 5 from the clamping column 2; then, stop the negative pressure state of the suction cup 43, and the valve seat will automatically detach from the suction cup 43.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it; when the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A clamping device for PVD coating of a small conical surface of a valve seat, characterized in that: include: Chassis (1); A clamping column (2) is arranged on the chassis (1); A top plate (3) is arranged on the clamping column (2) on the other side relative to the bottom plate (1); A pneumatic control mechanism connected to the top plate (3) and to the clamping column (2); A shielding block (5) is connected to the clamping column (2).

2. A clamping device for PVD coating of a small conical surface of a valve seat according to claim 1, characterized in that: The shielding block (5) is provided with a limit block (51) on one side close to the clamping column (2), and the limit block (51) is made of a metal material that can be attracted by a magnet; A limiting hole (21) is provided on the outside of the clamping column (2), and the limiting block (51) is connected to the limiting hole (21); The clamping column (2) is provided with a magnet (22) for attracting the limiting block (51).

3. The clamping device for PVD coating of a small conical surface of a valve seat according to claim 1 is characterized in that: The pneumatic control mechanism comprises: A connecting pipe (40) connected to the top plate (3); A main pipe (41) is arranged inside the clamping column (2) and connected to the connecting pipe (40); A thin tube (42), one end of which is connected to the main tube (41) and the other end of which extends out of the clamping column (2); A suction cup (43) is connected to the outer side of the clamping column (2) and to the capillary tube (42).

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