Single-face shot blasting tool

Abstract

The utility model relates to the technical field of shot blasting equipment, in particular to a single-face shot blasting tool which comprises a supporting seat, a spray gun is installed on the supporting seat, the spray gun comprises a spray pipe with changeable length, the spray pipe comprises a plurality of unit pipes and connecting pieces, and the unit pipes are detachably connected together through the connecting pieces. Compared with the prior art, the spray pipe composed of the detachable unit pipes is arranged, and the technical problem that in the prior art, the length of a spray pipe cannot be freely adjusted, and therefore the spray pipe cannot adapt to machining treatment of parts of different shapes is solved.

Description

Technical Field

[0001] The utility model patent relates to the technical field of shot peening equipment, specifically a single-sided shot peening tool. Background Art

[0002] Shot peening is a surface strengthening process widely used in factories. It is a cold processing process that uses shot peening to bombard the workpiece surface and implant residual compressive stress to improve the fatigue strength of the workpiece. It is widely used to improve the mechanical strength, wear resistance, fatigue resistance and corrosion resistance of parts.

[0003] The existing shot blasting tool consists of a support seat and a spray gun. The spray gun is connected to a storage box for storing shot particles. The spray gun includes a spray pipe. The shot particles enter the spray gun from the storage box and are sprayed out from the spray pipe. However, the existing nozzle structures, such as the Chinese patent "A shot peening device for rotational molding molds" (patent number ZL202220506884.8, published on 20220705), "A CNC shot peening machine capable of continuous shot peening operation" (patent number ZL202123270786.3, published on 20220419), and "A shot peening machine with adjustable shot peening angle" (application number CN202021419288.3, ​​published on 20210302), cannot freely adjust the length of the nozzle. Such a nozzle structure has the following defects in actual use: when processing irregularly shaped parts, especially parts with inner cavities or deep depressions, the fixed length nozzle cannot penetrate into the inner cavity of the part to perform shot peening on the inside of the part. In this way, it is only possible to shot peen from the outside of the part, allowing a part of the shot particles to probabilistically enter the inside of the part. The entire process cannot accurately control the shot peening coverage inside the part, affecting the processing effect of the part. If the nozzle length is set too long and the spray gun cannot move freely, it may interfere with the parts or the inside of the spray machine. Utility Model Content

[0004] The utility model aims to provide a single-sided shot peening tool, which is mainly used to solve the technical problem in the prior art that the nozzle cannot freely adjust the length and thus cannot adapt to the processing of parts with different shapes.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A single-sided shot peening tool comprises a support seat, a spray gun is mounted on the support seat, the spray gun comprises a nozzle with variable length, the nozzle comprises a plurality of unit tubes and a connecting piece, and the plurality of unit tubes are detachably connected together through the connecting piece.

[0007] The working principle and beneficial effects of the utility model:

[0008] 1. Working principle: Assemble several unit tubes together through connectors, and control the overall length of the nozzle by increasing or decreasing the number of unit tubes.

[0009] 2. Beneficial effects: The existing nozzles cannot freely adjust their lengths. Such nozzle structures have the following defects in actual use: When processing irregularly shaped parts, especially parts with inner cavities or deep depressions, the nozzles with fixed lengths cannot penetrate into the inner cavities of the parts to perform shot peening on the inside of the parts. In this way, shot peening can only be performed from the outside of the parts, allowing some of the pellets to enter the parts with probability. The entire process cannot accurately control the shot peening coverage rate inside the parts, affecting the processing effect of the parts. If the nozzle length is set to be longer, the spray gun cannot move freely, which may interfere with the parts or the inside of the spraying machine.

[0010] This solution achieves the technical effect of freely changing the length of the nozzle by setting the nozzle as a detachable and freely assembled structure, so that the nozzle can penetrate deeper into parts with inner cavities or recesses by extending the length, thereby solving the technical problem in the prior art that the nozzle cannot freely adjust the length and thus cannot adapt to the processing of parts of different shapes.

[0011] Preferably, the spray gun includes a connector mounted on a support seat, a shot blasting channel for passing the shot particles is provided in the middle of the connector, one end of the shot blasting channel is connected to a storage box for storing the shot particles, and the other end is connected to the spray pipe.

[0012] Preferably, the unit tube comprises a large tube, one end of which is fixedly connected to a small tube, a large channel is provided in the middle of the large tube, a small channel is provided inside the small tube, the small channel is coaxially arranged with the large channel, and the small tube can be transitionally matched with the large channel. The small tube of a unit tube is inserted into the large channel of the other end of the large tube to complete the assembly of the two unit tubes; finally, the channels inside the entire nozzle for passing the pellets are all small channels.

[0013] Preferably, the end of the large tube connected to the small tube is radially provided with two through holes, and the end of the small tube away from the large tube is radially provided with two threaded holes. When the small tube and the large tube are transitionally matched, the threaded hole and the through hole are coaxially arranged; the connecting piece includes a first hexagon socket screw, which is completely inserted into the through hole of the large tube and threadedly connected with the threaded hole of the small tube. The two assembled unit tubes are fixed together by the first hexagon socket screw; because the plate screwing surface of the first hexagon socket screw is inside the screw, this screw can ensure that the screw head and the screw rod are coaxial and of equal diameter. Using the first hexagon socket screw as a connecting part can completely screw the first hexagon socket screw into the through hole of the large tube, ensure the smoothness of the outer wall of the spray pipe, and reduce the probability of interference with the internal structure and parts of the shot peening machine.

[0014] Preferably, an annular groove coaxially arranged with the small channel is formed at one end of the small tube away from the large tube; the connecting piece comprises a cylindrical barrel that can be transitionally matched with the annular groove, and the inner wall of the cylindrical barrel has the same diameter as the inner wall of the small tube; the first hexagon socket screw is inserted into one end of the small tube and abuts against the outer wall of the cylindrical barrel. The function of the cylindrical barrel is to limit the position of the first hexagon socket screw screwed into the small tube, to prevent the first hexagon socket screw from protruding from the inner wall of the small tube, affecting the smoothness of the inner wall of the small tube, and causing the pellets in the small tube to be arranged on the first hexagon socket screw.

[0015] Preferably, a cylindrical barrel is installed in the small tube of the unit tube at the end far away from the connector in the nozzle, and a second hexagon socket screw is threadedly connected to the threaded hole on the small tube of the unit tube at the end far away from the connector in the nozzle, and the second hexagon socket screw is completely screwed into the threaded hole, and the end of the second hexagon socket screw close to the cylindrical barrel is against the outer surface of the cylindrical barrel. Because the small tube of the unit tube at the end is not further connected to the large tube, but the cylindrical barrel still needs to be installed in the small tube to keep the inner wall of the small tube flat, so if the first hexagon socket screw continues to be used as a connecting piece, the first hexagon socket screw protrudes from the surface of the small tube, which will increase and reduce the flatness of the entire nozzle surface, so it is necessary to replace another type of second hexagon socket screw to seal the threaded hole on the small tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of a single-sided shot peening tool of the utility model patent;

[0017] Figure 2 A cross-sectional view of a single unit tube of a single-sided shot peening tool of the utility model patent;

[0018] Figure 3 It is a cross-sectional view and a partial exploded view of the assembly of multiple unit tubes of a single-sided shot peening tool of the utility model patent;

[0019] Figure 4 This utility model patent is a single-sided shot peening tool Figure 3 Enlarged view of point A.

[0020] The figure marks in the drawings of the specification include: storage box 1, connecting head 2, shot peening pipe 21, nozzle 22, small tube 31, threaded hole 311, small channel 312, large tube 32, through hole 321, large channel 322, first hexagon socket screw 331, second hexagon socket screw 332, cylindrical tube 34, support seat 4. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 As shown, a single-sided shot peening tool includes a support base 4, on which a spray gun is installed. The spray gun includes a connector 2, a shot peening pipe 21 for passing the shot particles is opened in the middle of the connector 2, one end of the shot peening channel is connected to a storage box 1 for storing the shot particles, and the other end is connected to a spray pipe 22. The spray pipe 22 includes a plurality of unit tubes and connectors, and the plurality of unit tubes are detachably connected together through the connector.

[0023] The unit tube includes a large tube 32, one end of which is integrally formed with a small tube 31. A large channel 322 is opened in the middle of the large tube 32, and a small channel 312 is opened inside the small tube 31. The small channel 312 is coaxially arranged with the large channel 322, and the small tube 31 can be transitionally matched with the large channel 322. The end of the large tube 32 connected to the small tube 31 is radially opened with two through holes 321, and the end of the small tube 31 away from the large tube 32 is radially opened with two threaded holes 311. When the small tube 31 is connected to the large tube 32, the small tube 31 is radially opened with two threaded holes 311. During transitional fit, the threaded hole 311 is coaxially arranged with the through hole 321; an annular groove coaxially arranged with the small channel 312 is provided at one end of the small tube 31 away from the large tube 32, and a cylindrical tube 34 is transitionally fitted in the annular groove, and the inner wall of the cylindrical tube 34 has the same diameter as the inner wall of the small tube 31; the connected unit tubes are connected by the first hexagon socket screw 331, which is fully inserted into the through hole 321 of the large tube 32 and threadedly connected with the threaded hole 311 of the small tube 31, and the end thereof abuts against the outer surface of the cylindrical tube 34. The function of the cylindrical tube 34 is to limit the position of the first hexagon socket screw 331 screwed into the small tube 31, to prevent the first hexagon socket screw 331 from protruding from the inner wall of the small tube 31, affecting the smoothness of the inner wall of the small tube 31, and causing the pellets in the small tube 31 to be arranged on the first hexagon socket screw 331.

[0024] A cylindrical barrel 34 is installed in the small tube 31 of the unit tube at the end of the nozzle 22 away from the connector 2, and a second hexagon socket screw 332 is threadedly connected to the threaded hole 311 on the small tube 31 of the unit tube at the end of the nozzle 22 away from the connector 2. The second hexagon socket screw 332 is completely screwed into the threaded hole 311, and the end of the second hexagon socket screw 332 close to the cylindrical barrel 34 is against the outer surface of the cylindrical barrel 34. Because the small tube of the unit tube at the end is not further connected to the large tube, but the cylindrical barrel still needs to be installed in the small tube to keep the inner wall of the small tube flat, so if the first hexagon socket screw is continued to be used as a connecting piece, the first hexagon socket screw protrudes from the surface of the small tube, which will increase and reduce the flatness of the entire nozzle surface, so it is necessary to replace another type of second hexagon socket screw to seal the threaded hole on the small tube.

[0025] From the above, it can be seen that the specific implementation of the utility model is as follows:

[0026] When the length of the nozzle 22 needs to be increased, several unit tubes are assembled. When assembling adjacent unit tubes, the cylindrical tube 34 is inserted into the annular groove of the small tube 31, and then the small tube 31 is inserted into the large channel 322 of the large tube 32. Then the first hexagon socket screw 331 is screwed into the through hole 321 and the threaded hole 311 coaxially arranged between the large tube 32 and the small tube 31, and the end of the first hexagon socket screw 331 is made to abut against the outer surface of the cylindrical tube 34. When installing the last unit tube, the cylindrical tube 34 is inserted into the annular groove of the unit tube, and the second hexagon socket screw 332 is screwed into the threaded hole 311 of the unit tube to fix the unit tube and the cylindrical tube 34 together.

[0027] When the length of the nozzle 22 needs to be reduced, the unit pipe can be disassembled.

[0028] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A single-sided shot peening tool, comprising a support base, on which a spray gun is mounted, characterized in that: The spray gun comprises a nozzle with variable length, the nozzle comprises a plurality of unit tubes and a connecting piece, and the plurality of unit tubes are detachably connected together through the connecting piece.

2. A single-sided shot peening tool according to claim 1, characterized in that: The spray gun comprises a connector mounted on a support seat, a shot blasting channel for passing shot particles is provided in the middle of the connector, one end of the shot blasting channel is connected to a storage box for storing shot particles, and the other end is connected to a spray pipe.

3. A single-sided shot peening tool according to claim 2, characterized in that: The unit tube comprises a large tube, one end of which is fixedly connected to a small tube. A large channel is opened in the middle of the large tube, a small channel is opened inside the small tube, the small channel is coaxially arranged with the large channel, and the small tube can transitionally cooperate with the large channel.

4. A single-sided shot peening tool according to claim 3, characterized in that: The end where the large tube is connected to the small tube has two through holes radially opened, and the end where the small tube is away from the large tube has two threaded holes radially opened. When the small tube and the large tube are transitionally matched, the threaded hole and the through hole are coaxially arranged. The connecting piece includes a first hexagon socket screw, which is completely inserted into the through hole of the large tube and threadedly connected to the threaded hole of the small tube.

5. A single-sided shot peening tool according to claim 4, characterized in that: An annular groove coaxially arranged with the small channel is formed at one end of the small tube away from the large tube; the connecting piece comprises a cylindrical tube which can transitionally match with the annular groove, and the inner wall of the cylindrical tube has the same diameter as the inner wall of the small tube; the first hexagon socket screw is inserted into one end of the small tube and abuts against the outer wall of the cylindrical tube.

6. A single-sided shot peening tool according to claim 5, characterized in that: A cylindrical tube is installed in the small tube of the unit tube at the end farthest from the connecting head in the nozzle, and a second hexagon socket screw is threadedly connected in the threaded hole on the small tube of the unit tube at the end farthest from the connecting head in the nozzle. The second hexagon socket screw is completely screwed into the threaded hole, and one end of the second hexagon socket screw close to the cylindrical tube presses against the outer surface of the cylindrical tube.

Images