Shielding device for PVD (Physical Vapor Deposition) coating

Abstract

The utility model relates to a shielding device, belongs to the technical field of PVD (Physical Vapor Deposition), and particularly relates to a shielding device for PVD coating, which comprises a protective shell, and the top of the protective shell is fixedly connected with a circular block; the protection shell is opened by moving an arc-shaped block upwards, then a rotating block is operated to drive a second bevel gear on a rotating rod to rotate and drive a threaded rod on a first bevel gear to rotate, through arrangement of a limiting rod, the stability of a supporting block in the moving process can be guaranteed, the supporting block is driven to move up and down, and the supporting block can move up and down. A lifting block on a supporting column is driven to move, a drill bit is placed in a shielding column, the whole drill bit is limited and fixed through an inclined block and a telescopic spring, and the problems that when most of existing shielding equipment shields the drill bit, the drill bit is directly placed in the shielding column, the internal space of the shielding column is mostly fixed, and the working efficiency is high are solved. In addition, the drill bit is not limited and fixed, so that the drill bit is easy to move due to air pressure difference.

Description

Technical Field

[0001] This utility model relates to the field of PVD technology, and in particular to a masking device for PVD coating. Background Technology

[0002] Nowadays, physical vapor deposition technology is commonly used to deposit thin films with special functions on the surface of a substrate to improve the substrate's performance, such as wear resistance and corrosion resistance.

[0003] A search revealed Chinese patent CN219136894U, which discloses a shielding device for PVD coating. The device includes: a first shielding member with a receiving groove and a first through hole. The receiving groove is adapted to the workpiece to be coated and is used to receive a portion of the workpiece, which is a part of the workpiece that needs to be shielded during the coating process. The first through hole penetrates the first shielding member perpendicularly or obliquely relative to the axial direction of the receiving groove and communicates with the receiving groove to balance the pressure difference between the inside and outside of the receiving groove; and a limiting member, which passes through the first shielding member along the axial direction of the receiving groove and extends into the receiving groove, and the limiting member abuts against the workpiece located within the receiving groove to limit the position of the workpiece within the receiving groove.

[0004] Based on the above search results and existing technologies, the following findings were made:

[0005] Most existing shielding devices shield drill bits by directly placing the drill bit into the shielding column. The internal space of the shielding column is mostly fixed, making it inconvenient to adjust, and there is no limit or fixation for the drill bit, making it easy to move due to air pressure differences. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a shielding device for PVD coating. The protective shell is opened by moving the arc-shaped block upwards. Then, the rotating block drives the second bevel gear on the rotating rod to rotate, which in turn drives the threaded rod on the first bevel gear to rotate. The setting of the limiting rod ensures the stability of the support block during movement, causing the support block to move up and down, and consequently, the lifting block on the support column to move. This facilitates adjustment of the substrate where the drill bit is placed, allowing for use with different lengths. After adjusting the height of the lifting block, the drill bit is placed inside the shielding column, and the drill bit is fixed in place by the inclined block and the telescopic spring.

[0007] The technical solution to achieve the purpose of this utility model is: a shielding device for PVD coating, including a protective shell, a circular block fixedly connected to the top of the protective shell, a plurality of shielding columns fixedly connected to the top of the circular block, a support block provided inside the protective shell, and two threaded rods screwed onto the support block, and also including;

[0008] An adjustment mechanism, which is located on the protective housing;

[0009] The adjustment mechanism includes multiple support columns fixedly connected to the top of the support block. Each support column has a lifting block fixedly connected to its top. The bottom ends of two threaded rods are keyed to bevel gears. The top ends of the two threaded rods are rotatably connected to a circular block. The bottom of the circular block has two elongated blocks fixedly connected to it. Rotating rods are rotatably connected to the two elongated blocks. Two bevel gears are keyed to the rotating rods. Bevel gears one and two bevel gears mesh with each other.

[0010] In some embodiments, a rotating block is fixedly connected to one end of the rotating rod.

[0011] In some embodiments, the protective shell has an arc-shaped sliding groove, and an arc-shaped block is slidably connected in the arc-shaped sliding groove.

[0012] In some embodiments, two limiting rods are fixedly connected to the bottom of the circular block, and two limiting rods are slidably sleeved on the support block.

[0013] In some embodiments, each of the plurality of shielding columns is provided with an inclined block, and the plurality of inclined blocks and the sides of the plurality of shielding columns that are close to each other are fixedly connected with a telescopic spring.

[0014] In some embodiments, the protective shell has a fixing hole, and a rotating shaft is fixedly connected in the fixing hole.

[0015] Compared with existing technologies, the significant advantages of this invention are:

[0016] This invention opens the protective shell by moving the arc-shaped block upwards. Then, the rotating block drives the bevel gear two on the rotating rod to rotate, which in turn drives the threaded rod on the bevel gear one to rotate. The setting of the limiting rod can ensure the stability of the support block when it moves, and drive the support block to move up and down, which in turn drives the lifting block on the support column to move, so as to facilitate the adjustment of the base where the drill bit is placed, and to facilitate the use of different lengths. After adjusting the height of the lifting block, the drill bit is then placed in the shielding column. The inclined block and the telescopic spring limit and fix the entire drill bit, preventing the base of the drill bit from moving out of the shielding column when the gas pressure increases and forms a pressure difference with the external atmospheric pressure, thus improving the stability of the placement.

[0017] This solves the problem that most existing shielding devices, when shielding drill bits, simply place the drill bit directly into the shielding column. The internal space of the shielding column is mostly fixed, making it inconvenient to adjust, and there is no limit or fixation for the drill bit, making it easy for it to move due to air pressure differences. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure provided in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure provided in one embodiment of the present invention;

[0021] Figure 3 This utility model provides in one embodiment Figure 2 Enlarged structural diagram at point A in the middle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Protective shell; 2. Circular block; 3. Shielding column; 4. Arc-shaped sliding groove; 5. Arc-shaped block; 6. Rotating shaft; 7. Support block; 8. Support column; 9. Lifting block; 10. Threaded rod; 11. Bevel gear one; 12. Long block; 13. Rotating rod; 14. Bevel gear two; 15. Rotating block; 16. Limiting rod; 17. Telescopic spring; 18. Inclined block. Detailed Implementation

[0024] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0025] This utility model provides an improved masking device for PVD coating. The technical solution of this utility model is as follows:

[0026] like Figures 1-3 As shown, a masking device for PVD coating includes a protective shell 1, a circular block 2 fixedly connected to the top of the protective shell 1, and multiple shielding columns 3 fixedly connected to the top of the circular block 2. A support block 7 is provided inside the protective shell 1, and two threaded rods 10 are screwed onto the support block 7. The device also includes an adjustment mechanism located on the protective shell 1. The adjustment mechanism includes multiple support columns 8 fixedly connected to the top of the support block 7, and lifting blocks 9 fixedly connected to the top of each support column 8. A bevel gear 11 is keyed to the bottom of each of the two threaded rods 10, and the tops of the two threaded rods 10 are rotatably connected to the circular block 2. Two elongated blocks 12 are fixedly connected to the bottom of the circular block 2, and a rotating rod 13 is rotatably connected to each of the two elongated blocks 12. Two bevel gears 14 are keyed to the rotating rod 13, and the bevel gears 11 and 14 mesh with each other. The adjustment mechanism facilitates the vertical adjustment of the lifting block 9.

[0027] like Figure 2As shown, in one embodiment, a rotating block 15 is fixedly connected to one end of the rotating rod 13; the rotating block 15 facilitates the rotation of the rotating rod 13.

[0028] like Figure 2 As shown, in one embodiment, the protective shell 1 is provided with an arc-shaped sliding groove 4, and an arc-shaped block 5 is slidably connected in the arc-shaped sliding groove 4; the arc-shaped sliding groove 4 enables the arc-shaped block 5 to be moved.

[0029] like Figure 2 As shown, in one embodiment, two limiting rods 16 are fixedly connected to the bottom of the circular block 2, and two limiting rods 16 are slidably sleeved on the support block 7; the setting of the limiting rods 16 facilitates the stability of the support block 7 when it moves up and down.

[0030] like Figure 3 As shown, in one embodiment, each of the multiple shielding posts 3 is provided with a wedge 18, and the multiple wedges 18 and the sides of the multiple shielding posts 3 that are close to each other are fixedly connected with a telescopic spring 17; by setting the wedges 18, it is possible to facilitate the auxiliary positioning of the drill bit and prevent the drill bit from shaking when vacuuming.

[0031] like Figure 2 As shown, in one embodiment, a fixing hole is provided on the protective shell 1, and a rotating shaft 6 is fixedly connected in the fixing hole; the setting of the rotating shaft 6 makes it easy to rotate the protective shell 1.

[0032] The specific working method is as follows: When in use, move the arc-shaped block 5 upward to open the protective shell 1, and then operate the rotating block 15 to drive the bevel gear 14 on the rotating rod 13 to rotate, which in turn drives the threaded rod 10 on the bevel gear 11 to rotate. The setting of the limiting rod 16 can ensure the stability of the support block 7 when it moves, drive the support block 7 to move up and down, and drive the lifting block 9 on the support column 8 to move, so as to facilitate the adjustment of the base of the drill bit and facilitate the use when different lengths are used. After adjusting the height of the lifting block 9, the drill bit is then placed into the shielding column 3. The inclined block 18 and the telescopic spring 17 limit and fix the entire drill bit, preventing the base of the drill bit from moving out of the shielding column 3 when the gas pressure increases and forms a pressure difference with the external atmospheric pressure, thus improving the stability of the placement.

[0033] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A shielding device for PVD coating, comprising a protective shell (1), wherein a circular block (2) is fixedly connected to the top of the protective shell (1), and a plurality of shielding posts (3) are fixedly connected to the top of the circular block (2), and a support block (7) is provided inside the protective shell (1), wherein two threaded rods (10) are screwed onto the support block (7), characterized in that: Also includes; An adjustment mechanism is located on the protective shell (1); The adjustment mechanism includes multiple support columns (8) fixedly connected to the top of the support block (7). Each of the multiple support columns (8) is fixedly connected to a lifting block (9). The bottom ends of the two threaded rods (10) are keyed to a bevel gear (11). The top ends of the two threaded rods (10) are rotatably connected to a circular block (2). The bottom of the circular block (2) is fixedly connected to two elongated blocks (12). The two elongated blocks (12) are rotatably connected to a rotating rod (13). The rotating rod (13) is keyed to two bevel gears (14). The bevel gears (11) and the bevel gears (14) mesh with each other.

2. The masking device for PVD coating according to claim 1, characterized in that: One end of the rotating rod (13) is fixedly connected to a rotating block (15).

3. A masking device for PVD coating according to claim 1, characterized in that: The protective shell (1) is provided with an arc-shaped sliding groove (4), and an arc-shaped block (5) is slidably connected in the arc-shaped sliding groove (4).

4. A masking device for PVD coating according to claim 1, characterized in that: The bottom of the circular block (2) is fixedly connected to two limiting rods (16), and the support block (7) is slidably sleeved with two limiting rods (16).

5. A masking device for PVD coating according to claim 1, characterized in that: Each of the multiple shielding columns (3) is provided with an inclined block (18), and the multiple inclined blocks (18) and the multiple shielding columns (3) are respectively fixedly connected with a telescopic spring (17) on the side that is close to each other.

6. A masking device for PVD coating according to claim 1, characterized in that: The protective shell (1) has a fixing hole, and a rotating shaft (6) is fixedly connected in the fixing hole.

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