A new type of concave clamping fixture

Abstract

The utility model discloses a novel film coating concave fixture, include: fixed plate is provided with negative pressure chamber in the inside of fixed plate, adsorption fixed part, adsorption fixed part equidistance is located in the top of fixed plate, adsorption fixed part includes the sealing washer of fixed connection in the outside of fixed plate, the top fixed connection of sealing washer has the locating post, the middle part of locating post is provided with the air extraction hole of communication with negative pressure chamber, the utility model has the beneficial effect is: through negative pressure adsorption fixed mode can be fixed to the different size ball cover concave product, has improved the versatility and applicability of clamp, and the product outside is completely exposed outside, will not cause the shelter to it, after negative pressure extraction is completed, separates the air pipe, rotates the limit board, and the protective sliding cover motion is wrapped fixed baffle no.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, specifically a novel coating concave surface fixture. Background Technology

[0002] Sputtering deposition is a process where high-energy particles (usually ions) bombard a target material, ejecting target atoms or molecules and depositing them onto the substrate surface. Sputtering deposition can deposit various materials, such as metals, oxides, and nitrides, and can produce relatively uniform and strongly adhered thin films during the deposition process. For glass domes, sputtering deposition is commonly used for reflective and anti-reflective coatings. When performing coating operations on concave surfaces of domes, such as... Figure 8 As shown, when fixing a workpiece, it is often clamped and limited by a bottom support groove and a pressure plate with holes. This fixture and the corresponding method will cause a certain degree of obstruction to the product. Because the fixture obstructs part of the surface, the obstructed area cannot receive the coating material. As a result, the coating layer on the workpiece surface may become uneven, affecting the coating quality and causing inconsistent thickness. Utility Model Content

[0003] The purpose of this invention is to provide a novel coating concave surface fixture to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel coating concave surface fixture, comprising:

[0005] The fixing plate has a negative pressure chamber inside.

[0006] The adsorption fixing part is equidistantly placed on the top of the fixing plate. The adsorption fixing part includes a sealing gasket fixed to the outside of the fixing plate. A positioning post is fixed to the top of the sealing gasket. An air extraction hole communicating with the negative pressure chamber is opened in the middle of the positioning post.

[0007] The duct connector is located on one side of the fixed plate. One end of the duct connector is fixedly connected to a one-way valve inside the negative pressure chamber. A protective part is provided on the outside of the fixed plate corresponding to the position of the duct connector to protect the duct connector.

[0008] Preferably, the product also includes a positioning plate, wherein a positioning hole is provided in the middle of the positioning plate corresponding to the position of the sealing gasket, for pressing and positioning the concave surface of the spherical cover when the negative pressure chamber is drawn.

[0009] Preferably, the protective part includes a first fixed baffle and a second fixed baffle fixedly connected to one side of the fixed plate, and a protective sliding cover is slidably connected to the outside of the fixed plate. The protective sliding cover is located in an open structure between the second fixed baffle and the fixed plate.

[0010] Preferably, the protective sliding cover is slidably connected to the fixed baffle, and a compression spring is fixed between the fixed baffle and the inner wall of the protective sliding cover.

[0011] Preferably, a pressure gauge and an air inlet valve that communicate with the negative pressure chamber are fixedly connected to one side of the fixed plate, and the pressure gauge and air inlet valve are located between the air duct joint and the fixed baffle.

[0012] Preferably, a limiting plate is rotatably connected to one end of the top of the protective sliding cover. The limiting plate is interference-fitted with the protective sliding cover and is used to limit the position of the protective sliding cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the negative pressure adsorption fixing method can fix products with concave surfaces of different sizes, improving the versatility and applicability of the clamp, and the outer side of the product is completely exposed without obstruction; fixed baffle one and fixed baffle two are fixedly connected to one side of the fixed plate, the protective sliding cover is slidably connected to the fixed plate and fixed baffle two, the compression spring is fixed between fixed baffle two and the inner wall of the protective sliding cover, and the limiting plate is rotatably connected to one end of the top of the protective sliding cover and is interference-fitted with the protective sliding cover; when connecting the air duct joint, the sliding protective sliding cover exposes the air duct joint, and the rotating limiting plate limits and blocks it, facilitating the air duct connection; after the negative pressure extraction is completed, the air duct is separated, the limiting plate is rotated, and under the tension of the compression spring, the protective sliding cover moves to wrap around fixed baffle one, and then the limiting plate is rotated to limit and lock the protective sliding cover, forming a closed space, effectively preventing the coating operation from affecting the air duct joint. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the positioning column of this utility model;

[0016] Figure 3 This is a schematic diagram of the negative pressure chamber of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the duct connector of this utility model;

[0018] Figure 5 This is a schematic diagram of the protective sliding cover of this utility model when it is closed;

[0019] Figure 6 This is a schematic diagram of the internal structure of the protective sliding cover of this utility model;

[0020] Figure 7 This is a schematic diagram of the positioning plate of this utility model;

[0021] Figure 8 The product described in the background art.

[0022] In the diagram: 1. Fixed plate; 2. Sealing gasket; 3. Positioning post; 4. Air extraction port; 5. Protective sliding cover; 6. Air duct connector; 7. Pressure gauge; 8. Fixed baffle one; 9. Air inlet valve; 10. Limiting plate; 11. Compression spring; 12. Fixed baffle two; 13. One-way valve; 14. Negative pressure chamber; 15. Positioning plate; 16. Positioning hole. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , 2 As shown in Figures 3, 4, 5, 6, and 7, this utility model provides a technical solution: a novel coating concave fixture, comprising: a fixed plate 1, the fixed plate 1 having a negative pressure chamber 14 inside; adsorption fixing parts equidistantly positioned on the top of the fixed plate 1, the adsorption fixing parts including a rubber sealing gasket 2 bonded to the outside of the fixed plate 1, a positioning post 3 fixedly connected to the top of the sealing gasket 2, the positioning post 3 also being made of rubber, and an air extraction hole 4 communicating with the negative pressure chamber 14 being opened in the middle of the positioning post 3; and a duct connector 6 fixedly connected to one side of the fixed plate 1. One end of the duct connector 6 extends into the interior of the negative pressure chamber 14, and a one-way valve 13 is fixedly connected to the end of the duct connector 6 inside the negative pressure chamber 14 for unidirectional discharge of air from the inside of the negative pressure chamber 14 through the duct connector 6. A protective part is provided on the outside of the fixed plate 1 corresponding to the position of the duct connector 6 for protecting the duct connector 6.

[0025] It should be noted that in this embodiment, the concave surface of the spherical cover is placed on top of the sealing gasket 2, so that the positioning post 3 is located inside the concave surface of the spherical cover. The product is positioned by the positioning post 3. The suction end of the vacuum pump is connected to the air duct connector 6. Under the action of the vacuum pump, the air between the concave surface of the spherical cover and the sealing gasket 2 enters the negative pressure chamber 14 through the suction hole 4. Then the air duct connector 6 discharges the air from the inside of the negative pressure chamber 14. Under the action of the one-way valve 13, the inside of the negative pressure chamber 14 is under negative pressure. Under the action of atmospheric pressure, the concave surface of the spherical cover is adsorbed and fixed on the outside of the sealing gasket 2. The air duct connected to the air duct connector 6 is removed, and the protective part is placed on the outside of the air duct connector 6 to block it and prevent the coating operation from affecting the air duct connector 6. The adsorption fixation can be used to fix spherical concave surface products of different sizes.

[0026] In one embodiment, a positioning plate 15 is also included. A positioning hole 16 is provided in the middle of the positioning plate 15 corresponding to the position of the sealing gasket 2, which is used to press and position the concave surface product of the spherical cover when the negative pressure chamber 14 is evacuated.

[0027] It should be noted that, in this embodiment, when installing the concave ball cover product and the positioning post 3, the positioning plate 15 is placed on top of the fixing plate 1, so that the positioning hole 16 corresponds to the concave ball cover product. The positioning hole 16 can constrain the position of the concave ball cover product. The weight of the positioning plate 15 presses the concave ball cover product onto the top of the sealing gasket 2, thereby preventing air leakage at the connection when drawing negative pressure. When installing a smaller concave ball cover product, a positioning plate 15 with a suitable-sized positioning hole 16 can be selected. The positioning plate 15 is matched with the fixing plate 1, thereby aligning the positioning hole 16 with the sealing gasket 2. The product is then connected to the positioning post 3 through the positioning hole 16, thereby achieving positioning. After negative pressure adsorption, the positioning plate 15 can be removed.

[0028] In one embodiment, the protective part includes a first fixed baffle 8 and a second fixed baffle 12 fixedly connected to one side of the fixed plate 1. A protective sliding cover 5 is slidably connected to the outer side of the fixed plate 1. The protective sliding cover 5 is located in an open structure between the second fixed baffle 12 and the fixed plate 1. The protective sliding cover 5 is slidably connected to the second fixed baffle 12. A compression spring 11 is fixedly connected between the second fixed baffle 12 and the inner wall of the protective sliding cover 5. A limiting plate 10 is rotatably connected to one end of the top of the protective sliding cover 5. The limiting plate 10 is interference-fitted with the protective sliding cover 5 and is used to limit the position of the protective sliding cover 5 by the limiting plate 10.

[0029] It should be noted that, in this embodiment, when the duct connector 6 needs to be connected to the corresponding negative pressure equipment, the protective sliding cover 5 is slid toward one end of the fixed baffle 12 so that the duct connector 6 is placed on the outside of the protective sliding cover 5. At this time, the protective sliding cover 5 stretches the compression spring 11. Because the rotation position of the limiting plate 10 and the protective sliding cover 5 is off from the center of the limiting plate 10, the limiting plate 10 is rotated so that the limiting plate 10 contacts the outside of the air duct connector 6. In this way, the limiting plate 10 limits and blocks the protective sliding cover 5, making it convenient for the air duct to connect with the air duct connector 6. After the negative pressure is extracted, the air duct is separated from the air duct connector 6, and the limiting plate 10 is rotated to the top of the protective sliding cover 5. Under the tension of the compression spring 11, the protective sliding cover 5 moves towards one end of the fixed baffle 8 and wraps the fixed baffle 8. At this time, the protective sliding cover 5, the fixed baffle 8 and the fixed plate 1 form a closed space. The limiting plate 10 is rotated downward so that the limiting plate 10 blocks the outside of the fixed baffle 8, thereby limiting and locking the protective sliding cover 5.

[0030] In one embodiment, a pressure gauge 7 and an air inlet valve 9, which are connected to the negative pressure chamber 14, are fixedly connected to one side of the fixed plate 1. The air inlet valve 9 is a ball valve, and the pressure gauge 7 and the air inlet valve 9 are located between the duct joint 6 and the fixed baffle 8.

[0031] It should be noted that in this embodiment, when the negative pressure chamber 14 is evacuated, the pressure of the negative pressure chamber 14 can be observed through the pressure gauge 7. After the coating is completed, outside air can be introduced into the negative pressure chamber 14 through the air inlet valve 9, thereby removing the negative pressure in the negative pressure chamber 14 and making it convenient to remove the workpiece.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] 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 novel coated concave chuck, characterized by: include: The fixing plate (1) has a negative pressure chamber (14) inside. The adsorption fixing part is equidistantly placed on the top of the fixing plate (1). The adsorption fixing part includes a sealing gasket (2) fixed to the outside of the fixing plate (1). A positioning post (3) is fixed to the top of the sealing gasket (2). An air extraction hole (4) communicating with the negative pressure chamber (14) is opened in the middle of the positioning post (3). The duct connector (6) is placed on one side of the fixed plate (1). One-way valve (13) is fixed to one end of the duct connector (6) inside the negative pressure chamber (14). A protective part is provided on the outside of the fixed plate (1) and at the position corresponding to the duct connector (6) to protect the duct connector (6).

2. A novel coated concave fixture according to claim 1, characterized in that: It also includes a positioning plate (15), and a positioning hole (16) is provided in the middle of the positioning plate (15) corresponding to the position of the sealing gasket (2), which is used to press and position the concave surface product of the spherical cover when the negative pressure chamber (14) is drawn.

3. The novel coated concave fixture according to claim 1, wherein: The protective part includes a fixed baffle one (8) and a fixed baffle two (12) fixedly attached to one side of the fixed plate (1). A protective sliding cover (5) is slidably connected to the outside of the fixed plate (1). The protective sliding cover (5) is located in an open structure between the fixed baffle two (12) and the fixed plate (1).

4. The novel coated concave fixture according to claim 3, wherein: The protective sliding cover (5) is slidably connected to the fixed baffle (12), and a compression spring (11) is fixed between the fixed baffle (12) and the inner wall of the protective sliding cover (5).

5. The novel coated concave fixture according to claim 1, wherein: A pressure gauge (7) and an air inlet valve (9) connected to the negative pressure chamber (14) are fixedly connected to one side of the fixed plate (1). The pressure gauge (7) and the air inlet valve (9) are located between the air duct joint (6) and the fixed baffle (8).

6. The novel coated concave fixture of claim 4, wherein: The top end of the protective sliding cover (5) is rotatably connected to a limiting plate (10). The limiting plate (10) is interference-fitted with the protective sliding cover (5) and is used to limit the position of the protective sliding cover (5) by the limiting plate (10).

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