Spraying protection tool

Abstract

The utility model discloses a spraying protection tool, particularly relates to the technical field of scroll compressors, and comprises an upper main body and a lower main body, a through circular through hole is formed in the middle of the upper main body; an annular step is arranged on one end surface of the upper main body; an annular groove is formed in the other end face of the upper body, and a plurality of evenly-distributed limiting blocks are arranged on the inner wall of the annular groove. One end face of the lower body is arranged to be an opening end face, a heat dissipation groove is formed in the opening end face, a plurality of evenly-distributed heat dissipation holes communicated with the heat dissipation groove are formed in the side face of the lower body, and a square groove communicated with the heat dissipation groove and used for fixing is formed in the other end face of the lower body. According to the utility model, the scroll plate is positioned and fixed by arranging the annular groove and the limiting block, so that the spraying uniformity and quality are ensured; and through the arrangement of the heat dissipation holes, the surface drying time after the coating is sprayed can be shortened, so that the spraying speed of the scroll plate is increased, and the cost of the spraying process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of scroll compressor technology, and more specifically, to a spraying protective fixture. Background Technology

[0002] The scroll plate is a crucial component in a scroll compressor. Since conventional aluminum alloy substrates often fail to meet the requirements for high-speed rotation, corrosion resistance, and wear resistance, lubricating coatings (such as wear-resistant / corrosion-resistant coatings of PTFE or MoS₂) are frequently applied to the surface of the parts to improve their performance and service life. During the manufacturing process of the scroll plate, to precisely protect non-coated areas and ensure that the coating only covers designated locations (such as the working surface and end face of the scroll teeth) and avoids contaminating other areas (such as assembly surfaces, positioning holes, and exhaust ports), protective coating fixtures are used as a protective measure.

[0003] However, in actual use, existing spray protection fixtures for vortex disks lack positioning and fixing measures, making it difficult to ensure that the spraying position of the product is controlled, which in turn affects assembly. Therefore, this utility model proposes a spray protection fixture as a further improvement, so as to protect the prohibited spraying area, improve the efficiency of spraying work, and ensure the quality of spraying. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a spraying protective fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spraying protective fixture, comprising: an upper body and a lower body;

[0006] The upper body has a through circular hole in the middle, and one end face of the upper body has an annular step; the other end face of the upper body has an annular groove, and the inner wall of the annular groove is provided with a plurality of evenly distributed limiting blocks.

[0007] One end face of the lower body is configured as an opening end face, and a heat dissipation groove is provided on the opening end face. A plurality of evenly distributed heat dissipation holes communicating with the heat dissipation groove are provided on the side of the lower body. A square groove communicating with the heat dissipation groove and used for fixing is provided on the other end face of the lower body.

[0008] Furthermore, both the upper and lower main bodies are designed to be disc-shaped.

[0009] Furthermore, the number of the annular steps is the same as the number of the limiting blocks, and both the number of the annular steps and the number of the limiting blocks are at least four.

[0010] Furthermore, the annular groove between two adjacent limiting blocks is configured as a positioning slot, and the central axis of the positioning slot coincides with the central axis of the adjacent annular step.

[0011] Furthermore, the length and width of the positioning slot are not greater than the length and width of the annular step.

[0012] Furthermore, the number of heat dissipation holes is at least four.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] Compared with existing technologies, by setting annular grooves and limiting blocks, the positioning steps of the volute disk are used to accurately position and fix the volute disk, which facilitates the spraying operation and ensures the uniformity and quality of the spraying. The use of circular through holes allows the volute disk to be sprayed only along its volute profile during the spraying process, effectively protecting other areas on the volute disk. This ensures that no coating adheres to areas where spraying is prohibited, improving spraying efficiency while maintaining spraying quality. By setting heat dissipation holes, the surface drying time of the paint after spraying can be reduced, thereby increasing the spraying rate of the volute disk and reducing the cost of the spraying process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the opening end face of the lower body of this utility model.

[0016] Figure 2 This is a schematic diagram of the square groove in the lower body of this utility model.

[0017] Figure 3 This is a schematic diagram of the annular steps of the main body of this utility model.

[0018] Figure 4 This is a schematic diagram of the annular groove on the main body of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the vortex disk of this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Main body;

[0022] 11. Circular through hole; 12. Annular step; 13. Annular groove; 14. Limiting block; 15. Positioning slot; 2. Lower body;

[0023] 21. Mouth end face; 22. Heat dissipation groove; 23. Heat dissipation hole; 24. Square groove;

[0024] 3. Scroll disk;

[0025] 31. End face of the vortex disk opening; 32. vortex profile; 33. Clearance step; 34. Positioning step;

[0026] 35. Positioning hole; 36. Air inlet; 37. Exhaust hole. Detailed Implementation

[0027] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] Among them, such as Figure 5 As shown, if this utility model is used in the scroll plate 3, then the embodiment of the scroll plate 3 is as follows:

[0029] One end face of the vortex disk 3 is set as the vortex disk mouth end face 31. The vortex disk mouth end face 31 is provided with a vortex profile 32 and a clearance step 33, that is, the vortex profile 32 and the clearance step 33 are fixed to the vortex disk mouth end face 31.

[0030] The step 33 is located at the edge of the vortex profile 32. Four positioning steps 34 are provided on the end face 31 of the vortex disk opening. The positioning steps 34 are distributed on the edge of the end face 31 of the vortex disk opening, and the positioning steps 34 are fixedly connected to the vortex disk 3.

[0031] Multiple positioning holes 35 are provided on the positioning step 34, and air inlet 36 and exhaust 37 are provided at both ends of the vortex profile 32, with the exhaust 37 located in the middle of the vortex disk 3.

[0032] As attached Figure 1-4 The spraying protective fixture shown includes: an upper body 1 and a lower body 2;

[0033] The upper main body 1 can be made of 45# steel, and the lower main body 2 can be made of nylon;

[0034] The upper body 1 has a through circular hole 11 in the middle, and an annular step 12 is provided on one end face of the upper body 1; the upper body 1 is fixedly connected to the annular step 12.

[0035] An annular groove 13 is provided on the other end face of the upper body 1, and a plurality of evenly distributed limiting blocks 14 are provided on the inner wall of the annular groove 13; the limiting blocks 14 are fixedly connected to the inner wall of the annular groove 13.

[0036] One end face of the lower body 2 is configured as an opening end face 21, and a heat dissipation groove 22 is provided on the opening end face 21. A plurality of evenly distributed heat dissipation holes 23 are provided on the side of the lower body 2, which are connected to the heat dissipation groove 22. A square groove 24 is provided on the other end face of the lower body 2, which is connected to the heat dissipation groove 22 and is used for fixing.

[0037] The scroll plate 3 has a scroll-shaped line 32 with one end face contacting the upper body 1, and the other end face of the scroll plate 3 contacting the lower body 2. That is, the upper body 1 and the lower body 2 sandwich the scroll plate 3. Then, the positioning step 34 of the scroll plate 3 is inserted into the annular groove 13 and is restricted by the annular groove 13 and the limiting block 14 to prevent the scroll plate 3 from shifting, thus achieving the effect of positioning and fixing, which helps to accurately protect the non-sprayed area.

[0038] Wherein, the diameter of the circular through hole 11 is larger than the maximum outer diameter of the vortex profile 32 so that the vortex profile 32 can be fully exposed, ensuring that the vortex profile 32 of the vortex disk 3 is not blocked during the spraying process; preferably, the diameter of the circular through hole 11 is 2mm larger than the maximum outer diameter of the vortex profile 32.

[0039] The positioning steps 34 are arranged at equal intervals around the central axis of the vortex disk 3. The inner diameter of the limiting block 14 is 2mm larger than the inner diameter of the positioning steps 34, and the thickness of the limiting block 14 is 1mm larger than the thickness of the positioning steps 34.

[0040] In order to shorten the surface drying time of the paint after spraying, the lower body 2 is provided with at least four heat dissipation holes 23 with a diameter of 10mm on the side, and the heat dissipation holes 23 are arranged at equal intervals around the central axis of the vortex disk 3. During the surface drying process of the paint, the presence of heat dissipation holes 23 allows air to circulate inside and outside the lower body 2, which accelerates the surface drying of the paint, thereby increasing the spraying rate of the vortex disk 3 and reducing the cost of the spraying process.

[0041] The square groove 24 has a side length of 30mm and a depth of 5mm. A boss is provided on the worktable of the spraying machine, so that the square groove 24 is engaged with the boss, thereby ensuring that the spraying work can be carried out normally.

[0042] In order to reduce the friction coefficient of the scroll plate 3, in this embodiment, preferably, a wear-resistant and corrosion-resistant coating is applied to the scroll profile 32 of the scroll plate 3 to reduce the friction coefficient of the scroll plate 3 and improve the performance and service life of the compressor.

[0043] In a preferred embodiment, as shown in the appendix Figure 1-4 As shown, both the upper body 1 and the lower body 2 are designed to be disc-shaped.

[0044] In order to save costs, the outer diameters of the upper body 1 and the lower body 2 are the same as the outer diameter of the vortex disk 3;

[0045] In a preferred embodiment, as shown in the appendix Figure 3 and attached Figure 4As shown, the number of annular steps 12 and the number of limiting blocks 14 are the same, and at least four annular steps 12 and four limiting blocks 14 are provided; so that the upper body 1 and the vortex disk 3 are subjected to stable force.

[0046] In a preferred embodiment, as shown in the appendix Figure 3 and attached Figure 4 As shown, the annular groove 13 between two adjacent limiting blocks 14 is set as a positioning slot 15, and the central axis of the positioning slot 15 coincides with the central axis of the adjacent annular step 12.

[0047] The positioning step 34 of the scroll plate 3 is inserted into the positioning slot 15 and is restricted by the annular groove 13 and the limiting block 14 to prevent the scroll plate 3 from shifting, thus achieving the effect of positioning and fixing, which helps to accurately protect the non-sprayed area; moreover, the annular step 12 facilitates the insertion of the positioning step 34 into the positioning slot 15.

[0048] The length, width, and depth of the positioning slot 15 are all 0.5 mm larger than the length, width, and depth of the positioning step 34.

[0049] In a preferred embodiment, as shown in the appendix Figure 3 and attached Figure 4 As shown, the length and width of the positioning slot 15 are not greater than the length and width of the annular step 12; so that the force between the annular step 12 and the positioning slot 15 is uniform and the overall structure is stable.

[0050] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 2 As shown, at least four heat dissipation holes 23 are provided to ensure uniform airflow, accelerate the surface drying of the coating, and increase the spraying rate of the vortex disk 3.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] 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 spray coating protective fixture, characterized in that: include: Upper main body (1) and lower main body (2); The upper body (1) has a through circular hole (11) in the middle, and one end face of the upper body (1) has an annular step (12); the other end face of the upper body (1) has an annular groove (13), and the inner wall of the annular groove (13) is provided with a plurality of evenly distributed limiting blocks (14). One end face of the lower body (2) is configured as an opening end face (21), and the opening end face (21) is provided with a heat dissipation groove (22). The side of the lower body (2) is provided with a plurality of evenly distributed heat dissipation holes (23) communicating with the heat dissipation groove (22). The other end face of the lower body (2) is provided with a square groove (24) communicating with the heat dissipation groove (22) and used for fixing.

2. The spray coating protective fixture according to claim 1, characterized in that: The upper body (1) and the lower body (2) are both designed to be disc-shaped.

3. The spraying protective fixture according to claim 1, characterized in that: The number of the annular steps (12) is the same as the number of the limiting blocks (14), and the number of the annular steps (12) and the number of the limiting blocks (14) are both at least 4.

4. The spraying protective fixture according to claim 3, characterized in that: The annular groove (13) between two adjacent limiting blocks (14) is configured as a positioning slot (15), and the central axis of the positioning slot (15) coincides with the central axis of the adjacent annular step (12).

5. The spraying protective fixture according to claim 4, characterized in that: The length and width of the positioning slot (15) are not greater than the length and width of the annular step (12).

6. The spray coating protective fixture according to claim 1, characterized in that: The number of heat dissipation holes (23) is at least 4.

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