Thread protection device in sand blasting process

Abstract

The utility model discloses a thread protection device in a sand blasting process, which comprises a rubber protection sleeve, two limiting grooves are arranged in the rubber protection sleeve, the rubber protection sleeve is inserted into a threaded hole of a plate-shaped piece, and a fixing rod assembly for pressing the rubber protection sleeve is inserted into the rubber protection sleeve. The utility model solves the problem that in order to prevent the rubber plug from falling off in the sand blasting process, the rubber plug can be clamped in the threaded hole, so that the rubber plug can not be pulled out easily.

Description

Technical Field

[0001] The utility model relates to a thread protection device in a sandblasting process. Background Art

[0002] Sandblasting uses compressed air as a power source to form a high-speed jet beam, spraying abrasive at high speed onto the surface of the workpiece to be processed, causing physical changes to the surface of the workpiece to meet quality requirements. At the same time, the sandblasting process also improves the fatigue resistance of the workpiece. Sandblasting will create a certain degree of roughness on the surface, increase the adhesion between it and the coating, extend the durability of the coating, and also facilitate the smoothing and decoration of the coating.

[0003] However, the threaded holes may be damaged during the spraying process of plate-type parts, so it is generally considered to use rubber plugs to protect the threaded holes. However, in order to prevent the rubber plugs from falling off during the sandblasting process, the rubber plugs will be stuck in the threaded holes, which may make it difficult to pull out the rubber plugs. Utility Model Content

[0004] The utility model aims to overcome the existing defects and provide a thread protection device in a sandblasting process, which can facilitate the removal of the rubber plug while clamping the rubber plug.

[0005] The technical solution to achieve the above purpose is: a thread protection device in a sandblasting process, comprising a rubber protective sleeve, two limit grooves are provided inside the rubber protective sleeve, the rubber protective sleeve is inserted into the threaded hole of the plate-shaped part, and a fixing rod assembly is inserted into the rubber protective sleeve to press the rubber protective sleeve.

[0006] Preferably, the fixed rod assembly includes a hollow rod, a first support plate, a guide rail, two springs, two second support plates, four sliders and four limit blocks, the hollow rod is inserted into the rubber protective sleeve, the inner bottom surface of the hollow rod is connected to the first support plate, two opposite side walls of the first support plate are mirror-imaged with mounting grooves, each of the mounting grooves is provided with a spring, one end of the spring is connected to the corresponding second support plate, the side walls of the two second support plates are connected to a slider, each slider is slidably connected to the corresponding guide rail, one end of each guide rail is connected to the first support plate, the other end of each guide rail is connected to the inner wall of the hollow rod, and two limit blocks are also provided on each second support plate.

[0007] Preferably, four sliding grooves are opened on the outer wall of the hollow rod, each of the limit blocks passes through the corresponding sliding groove, and the four limit blocks are slidably connected to the hollow rod.

[0008] Preferably, the outer wall of the hollow rod is threadedly connected with a protective cover.

[0009] Preferably, the two limiting blocks are located in the corresponding limiting grooves.

[0010] Preferably, the outer wall of the rubber protective sleeve is in contact with the threaded hole.

[0011] Preferably, the diameter of the hollow rod is smaller than the pore diameter of the rubber protective sleeve.

[0012] Preferably, the hollow rod and the protective cover are made of stainless steel.

[0013] The beneficial effects of the utility model are as follows: the outer wall of the rubber protective sleeve is just in contact with the threaded hole, and the rubber protective sleeve can be freely taken out of the threaded hole. When the two second support plates are pinched, the two second support plates are close to each other, and the respective relative limit blocks are close to each other. At this time, the two springs begin to contract until the limit blocks are completely located in the hollow rod. At this time, the fixed rod assembly that compresses the rubber protective sleeve can be conveniently and quickly inserted or pulled out, so that the rubber protective sleeve can be conveniently taken out while the rubber protective sleeve is clamped tightly.

[0014] At the same time, the structure of using the fixed rod assembly to compress the rubber protective sleeve can reuse the rubber protective sleeve and the hollow rod, which greatly saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is an exploded view of the utility model;

[0017] Figure 3 It is a schematic diagram of the cooperation between the rubber protective sleeve and the fixing rod assembly of the utility model;

[0018] Figure 4 yes Figure 3 Sectional view at A in the middle;

[0019] Figure 5 It is a cross-sectional view of the rubber protective sleeve of the utility model.

[0020] In the figure: 1. rubber protective cover; 2. threaded hole; 3. fixed rod assembly; 4. protective cover; 5. limit groove; 31. hollow rod; 32. first support plate; 33. guide rail; 34. spring; 35. second support plate; 36. slider; 37. limit block. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] The utility model will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-5 As shown, a thread protection device in a sandblasting process includes a rubber protective sleeve 1, a fixing rod assembly 3 and a protective cover 4.

[0024] Specifically, two limiting grooves 5 are provided inside the rubber protective sleeve 1, the rubber protective sleeve 1 is inserted into the threaded hole 2 of the plate-shaped member, and a fixing rod assembly 3 for pressing the rubber protective sleeve 1 is inserted into the rubber protective sleeve 1. The structure of using the fixing rod assembly 3 to press the rubber protective sleeve 1 can reuse the rubber protective sleeve 1 and the hollow rod 31, which greatly saves costs.

[0025] Specifically, the fixed rod assembly 3 includes a hollow rod 31, a first support plate 32, a guide rail 33, two springs 34, two second support plates 35, four sliders 36 and four limit blocks 37. The hollow rod 31 is inserted into the rubber protective sleeve 1, and the inner bottom surface of the hollow rod 31 is connected to the first support plate 32. Mounting grooves are mirrored on two opposite side walls of the first support plate 32, and a spring 34 is respectively provided in the mounting groove. One end of the spring 34 is connected to the corresponding second support plate 35. A slider 36 is connected to the side walls of the two second support plates 35. Each slider 36 is slidably connected to the corresponding guide rail 33. One end of each guide rail 33 is connected to the first support plate 32, and the other end of each guide rail 33 is connected to the inner wall of the hollow rod 31. The guide rail 33 plays a limiting role, so that the two second support plates 35 and the four limit blocks 37 can only move along the direction of the guide rail 33. Two limit blocks 37 are also provided on each second support plate 35.

[0026] Specifically, four sliding grooves are opened on the outer wall of the hollow rod 31, and each limit block 37 passes through the corresponding sliding groove. The four limit blocks 37 are slidably connected to the hollow rod 31. The outer wall of the hollow rod 31 is threadedly connected with a protective cover 4, which can protect the parts inside the hollow rod 31.

[0027] Specifically, the two limit blocks 37 are located in the corresponding limit grooves 5. The two limit blocks 37 can press the rubber protective sleeve 1 into the threaded hole 2. The outer wall of the rubber protective sleeve 1 is just in contact with the threaded hole 2. The rubber protective sleeve 1 can be freely taken out from the threaded hole 2. The diameter of the hollow rod 31 is smaller than the aperture of the rubber protective sleeve 1, and the hollow rod 31 can be quickly inserted into the rubber protective sleeve 1; the hollow rod 31 and the protective cover 4 are made of stainless steel material, and the stainless steel material has good corrosion resistance, which can effectively extend the service life of the device.

[0028] Working principle: before sandblasting the plate-type parts, insert the rubber protective cover 1 into the threaded hole 2, and then pinch the two second support plates 35 so that the two second support plates 35 are close to each other, and the relative limit blocks 37 are close to each other. At this time, the two springs 34 begin to shrink until each limit block 37 is completely located in the hollow rod 31, and then the hollow rod 31 is completely inserted into the rubber protective cover 1, and then the two second support plates 35 are released. At this time, each limit block 37 slides under the action of the elastic force of the two springs 34, and each limit block 37 enters the corresponding limit groove 5, and then each limit block 37 causes the two limit grooves 5 in the rubber protective cover 1 to deform, so that the rubber protective cover 1 is tightly attached to the threaded hole 2, and then the protective cover 4 is installed; when the sandblasting process is completed, the above steps are performed in reverse to take out the rubber protective cover 1 and the hollow rod 31.

[0029] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A thread protection device in a sandblasting process, characterized in that: The rubber protective sleeve (1) comprises two limit grooves (5) formed inside the rubber protective sleeve (1), the rubber protective sleeve (1) is inserted into a threaded hole (2) of a plate-shaped member, and a fixing rod assembly (3) for pressing the rubber protective sleeve (1) is inserted into the rubber protective sleeve (1).

2. A thread protection device in a sandblasting process according to claim 1, characterized in that: The fixed rod assembly (3) comprises a hollow rod (31), a first support plate (32), a guide rail (33), two springs (34), two second support plates (35), four sliders (36) and four limit blocks (37). The hollow rod (31) is inserted into the rubber protective sleeve (1). The inner bottom surface of the hollow rod (31) is connected to the first support plate (32). Two opposite side walls of the first support plate (32) are mirror-imaged with mounting grooves. Each of the mounting grooves is provided with a spring (34). One end of the spring (34) is connected to the corresponding second support plate (35). The side walls of the two second support plates (35) are each connected to a slider (36). Each slider (36) is slidably connected to the corresponding guide rail (33). One end of each guide rail (33) is connected to the first support plate (32), and the other end of each guide rail (33) is connected to the inner wall of the hollow rod (31). Two limit blocks (37) are also provided on each second support plate (35).

3. A thread protection device in a sandblasting process according to claim 2, characterized in that: Four sliding grooves are provided on the outer wall of the hollow rod (31), and each of the limit blocks (37) passes through the corresponding sliding groove. The four limit blocks (37) are slidably connected to the hollow rod (31).

4. A thread protection device in a sandblasting process according to claim 2, characterized in that: The outer wall of the hollow rod (31) is threadedly connected with a protective cover (4).

5. The thread protection device in a sandblasting process according to claim 2, characterized in that: The two limiting blocks (37) are located in the corresponding limiting grooves (5).

6. The thread protection device in a sandblasting process according to claim 1, characterized in that: The outer wall of the rubber protective sleeve (1) is in contact with the threaded hole (2).

7. A thread protection device in a sandblasting process according to claim 2, characterized in that: The diameter of the hollow rod (31) is smaller than the hole diameter of the rubber protective sleeve (1).

8. A thread protection device in a sandblasting process according to claim 4, characterized in that: The hollow rod (31) and the protective cover (4) are made of stainless steel.

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