Clamp for electric arc spraying

Abstract

The utility model relates to the technical field of target material production, in particular to a clamp for electric arc spraying. Comprising a jacking piece, one end of the jacking piece is provided with a jacking column coaxial with the jacking piece, the other end of the jacking piece is provided with a circular truncated cone and a protruding ring which are coaxial with the jacking piece, the protruding ring is located on the outer side of the circular truncated cone, and a first groove is formed between the protruding ring and the circular truncated cone; a plurality of second grooves are formed in the outer circumference of the protective sleeve, the extending direction of the second grooves is parallel to the axis of the protective sleeve, segmentation blocks are detachably connected into the second grooves, fin plates are arranged on the two sides of each segmentation block, and third grooves are formed in the sides, close to the protective sleeve, of the segmentation blocks. The coating section outside the protective sleeve is easy to take down.

Description

Technical Field

[0001] This utility model relates to the field of target material production technology, and in particular to a fixture for arc spraying. Background Technology

[0002] The target material is a sputtering source that forms various functional thin films on a substrate by sputtering using magnetron sputtering, multi-arc ion plating, or other types of coating systems under appropriate process conditions. Some low-melting-point rotating metal targets, such as rotating tin targets and rotating zinc-tin targets, can be produced by arc spraying. This involves spraying tin or zinc-tin wire onto a rotating back tube (the back tube is mounted on the rotating equipment to allow it to rotate) using an arc spraying device. After spraying, the thickness of the tin or zinc-tin layer is approximately 10 mm. The structure of the back tube 4 is as follows... Figure 6 As shown, its two ends are ports (ports are generally about 20 mm long). During spraying, the ports must be protected with clamps to prevent tin or zinc tin from being sprayed onto the ports. When the existing clamps protect the ports, tin or zinc tin will be sprayed onto the outer circumference of the clamps to form a ring of a certain thickness (about 8 mm). This ring is tightly fitted onto the clamps and is difficult to remove from the clamps. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a clamp for arc spraying, which addresses the above-mentioned technical deficiencies.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a clamping member for arc spraying, including a clamping member, one end of which is provided with a top column coaxial with it, and the other end of which is provided with a frustum and a convex ring coaxial with it. The convex ring is located outside the frustum and a first groove is formed between the two. A protective sleeve is provided on the outside of the clamping member. A plurality of second grooves are provided on the outer circumference of the protective sleeve. The extending direction of the second grooves is parallel to the axis of the protective sleeve. A dividing block is detachably connected in the second groove. A fin is provided on both sides of the dividing block. A third groove is provided on the side of the dividing block near the protective sleeve.

[0005] To further optimize this technical solution, a through hole is provided on one side of the segmented block, penetrating its upper and lower surfaces. A second threaded hole is provided in the second groove, and the second bolt passes through the through hole and connects to the second threaded hole.

[0006] To further optimize this technical solution, the clamping member is provided with first threaded holes on both sides, and the protective sleeve is provided with elongated holes. The first bolt passes through the elongated holes and connects with the first threaded holes.

[0007] To further optimize this technical solution, the protective sleeve is provided with a receiving portion at the end away from the second threaded hole, and the inner diameter of the receiving portion is larger than the outer diameter of the convex ring.

[0008] To further optimize this technical solution, a tapered hole is provided at the outer end of the top column.

[0009] Compared with the prior art, the present invention has the following advantages: the outer side of the clamping member is provided with a protective sleeve, the outer side of the protective sleeve is detachably connected with a dividing block, both sides of the dividing block are provided with fins, and the side of the dividing block near the protective sleeve is provided with a third groove, so as to facilitate the removal of the coating section on the outer side of the protective sleeve. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a fixture for electric arc spraying.

[0011] Figure 2 This is a structural schematic diagram of the clamping component.

[0012] Figure 3 This is a schematic diagram of the protective sleeve.

[0013] Figure 4 This is a schematic diagram of the segmented block structure.

[0014] Figure 5 This is a schematic diagram of the structure of an arc spraying fixture in use.

[0015] Figure 6 This is a schematic diagram of the back tube structure.

[0016] In the diagram: 1. Tightening component; 11. Frustum; 12. Protruding ring; 13. First groove; 14. First threaded hole; 15. Top post; 2. First bolt; 3. Protective sleeve; 31. Second groove; 32. Second threaded hole; 33. Second bolt; 34. Dividing block; 341. Through hole; 342. Fin plate; 343. Third groove; 35. Elongated hole; 36. Receiving part; 4. Back tube. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0018] Detailed implementation method: combined with Figure 1-5As shown, an arc spraying fixture includes a clamping member 1. One end of the clamping member 1 is provided with a top post 15 coaxial with it, and the other end of the clamping member 1 is provided with a frustum 11 and a convex ring 12 coaxial with it. The convex ring 12 is located outside the frustum 11, and a first groove 13 is formed between the two. The diameter of the frustum 11 is equal to the inner diameter of the back tube 4, and the inner diameter of the convex ring 12 is equal to the outer diameter of the back tube 4. The end of the back tube 4 can be inserted into the first groove 13, and its end face contacts the bottom surface of the first groove 13 for protection. A protective sleeve 3 is provided on the outside of the clamping member 1. The inner diameter of the protective sleeve 3 is larger than the outer diameter of the target material. The end of the protective sleeve 3 protrudes beyond the end face of the convex ring 12. Multiple second grooves 31 are provided on the outer circumference of the protective sleeve 3. The extending direction of the second grooves 31 is parallel to the axis of the protective sleeve 3. A dividing block 34 is detachably connected within the second groove 31. The height of the dividing block 34 is greater than the thickness of the coating adhered to the protective sleeve 3. Fins 342 are provided on both sides of the dividing block 34, and the fins 342 are located within the second grooves 31. A third groove 343 is provided on the side of the dividing block 34 closest to the protective sleeve 3. In use, combined with... Figure 5 As shown, the clamps are installed at both ends of the back tube 4 (the other end is not shown in the figure), and then it is clamped on the rotating equipment. During spraying, the rotating equipment drives the clamps and the back tube 4 to rotate, and the arc spray gun moves back and forth along the axial direction of the back tube 4 and sprays tin or zinc tin onto the outside of the back tube 4. Figure 5 A certain length of the left end of the protective sleeve 3 will be coated with a tin or zinc-tin layer. The portion of the back tube 4 located inside the protective sleeve 3, except for a small section near the left end of the protective sleeve 3 (because the molten droplets ejected during arc spraying are somewhat cone-shaped and diffuse outwards to a certain extent, this small section will be coated with some material), will not be coated. After spraying, the outer diameter of the coating on the back tube 4 is smaller than the inner diameter of the protective sleeve 3, so the coatings on the two are disconnected and not connected. The end of the coating does not contact the end of the convex ring 12, so the clamp can be easily removed from the back tube 4. Due to the presence of the dividing block 34, the coating on the outside of the protective sleeve 3 is divided into several segments. Then, a flathead screwdriver can be inserted into the right end of the third groove 343 and rotated and pried (the dividing block 34 needs to be disconnected from the protective sleeve 3 first). Then, the screwdriver can be inserted into the left end of the third groove 343 and rotated and pried. The fin plate 342 will separate the coating segment on the outside of the protective sleeve 3 from the protective sleeve 3, making it easy to remove the coating segment. The coating segment on the outer surface of the dividing block 34 is also easy to remove.

[0019] Specifically, one side of the dividing block 34 is provided with a through hole 341 penetrating its upper and lower surfaces, and a second threaded hole 32 is provided in the second groove 31. The second bolt 33 passes through the through hole 341 and connects to the second threaded hole 32. This method realizes the detachable connection between the dividing block 34 and the protective sleeve 3. When removing the coating section, the second bolt 33 can be loosened or unscrewed first.

[0020] Furthermore, the clamping member 1 has first threaded holes 14 on both sides, and the protective sleeve 3 has an elongated hole 35. The first bolt 2 passes through the elongated hole 35 and connects to the first threaded hole 14. In actual use, the coating will not be sprayed onto the elongated hole 35. The position of the protective sleeve 3 can be adjusted by loosening the first bolt 2. Before arc spraying the target material, the back tube 4 needs to be sandblasted and sprayed with a base coat. Since the protective sleeve 3 can be adjusted, this fixture can also be used during sandblasting and base coat spraying. In this case, it is only necessary to move the protective sleeve 3 towards the direction of the top post 15 so that the protective sleeve 3 does not protrude from the end face of the convex ring 12. Preferably... Figure 5 The left end of the protective sleeve 3 is located a certain distance to the right of the left end of the convex ring 12. At this time, the primer will not be sprayed on the outside of the protective sleeve 3 (the primer enhances the adhesion; if the primer is applied to the outside of the protective sleeve 3, the coated section will be difficult to remove from the protective sleeve 3). After sandblasting and applying the primer, the protective sleeve 3 can be adjusted to the required position. Therefore, no additional fixture is needed when sandblasting and applying the primer; this fixture can be used. Consequently, it is convenient not to change the fixture when performing arc spraying after sandblasting and applying the primer. Otherwise, a different fixture is used when sandblasting and applying the primer, and the fixture in this application needs to be changed for arc spraying, which is more troublesome.

[0021] Furthermore, the protective sleeve 3 has a receiving portion 36 at the end away from the second threaded hole 32. The inner diameter of the receiving portion 36 is larger than the outer diameter of the convex ring 12. This is because during the spraying of the primer, a certain range of the left end of the convex ring 12 will be sprayed with the primer, causing the outer diameter of the convex ring 12 to increase (the outer diameter increases slightly after each primer spraying). The presence of the receiving portion 36 allows the protective sleeve 3 to accommodate the outer diameter of the primer within a certain range. Figure 5 Move it to the left. After long-term use, the outer diameter of the base layer will become relatively large, at which point the base layer needs to be machined off using a lathe.

[0022] Furthermore, the outer end of the top post 15 is provided with a conical hole. When one end of the rotating device is a chuck and the other end is a rotating pin, the rotating pin can be inserted into the conical hole of the clamp at one end of the back tube 4. The chuck clamps the outer circumferential surface of the top post 15 of the clamp at the other end of the back tube 4, thereby completing the clamping.

[0023] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A clamp for arc spraying, comprising a clamping member (1), characterized in that: One end of the clamping member (1) is provided with a top post (15) coaxial with it, and the other end of the clamping member (1) is provided with a frustum (11) and a convex ring (12) coaxial with it. The convex ring (12) is located outside the frustum (11) and a first groove (13) is formed between the two. A protective sleeve (3) is provided on the outside of the clamping member (1). A plurality of second grooves (31) are provided on the outer circumference of the protective sleeve (3). The extension direction of the second grooves (31) is parallel to the axis of the protective sleeve (3). A dividing block (34) is detachably connected in the second groove (31). A fin plate (342) is provided on both sides of the dividing block (34). A third groove (343) is provided on the side of the dividing block (34) near the protective sleeve (3).

2. The clamp for arc spraying according to claim 1, characterized in that: One side of the segment (34) is provided with a through hole (341) that penetrates its upper and lower surfaces. The second groove (31) is provided with a second threaded hole (32). The second bolt (33) passes through the through hole (341) and is connected to the second threaded hole (32).

3. The clamp for arc spraying according to claim 1, characterized in that: The clamping member (1) has first threaded holes (14) on both sides, and the protective sleeve (3) has elongated holes (35). The first bolt (2) passes through the elongated holes (35) and connects to the first threaded holes (14).

4. The clamp for arc spraying according to claim 3, characterized in that: The protective sleeve (3) has a receiving part (36) at one end away from the second threaded hole (32), and the inner diameter of the receiving part (36) is larger than the outer diameter of the convex ring (12).

5. A fixture for arc spraying according to any one of claims 1-4, characterized in that: The outer end of the top column (15) is provided with a conical hole.

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