Efficient shot blasting equipment for inner wall of pipe body or spring

Abstract

The invention discloses efficient shot blasting equipment for the inner wall of a pipe body or a spring. The efficient shot blasting equipment comprises a supporting plate, a flow guide pressing plate, an integrated plate, a lifter, a shot blasting pipe and a shot collecting bin. The supporting plate is horizontally and fixedly arranged, and through holes are evenly distributed in the plate face of the supporting plate. And the liftable flow guide pressing plate is arranged above the supporting plate in parallel. The integrated plate is obliquely arranged under the supporting plate relative to the horizontal plane, and the integrated plate is connected with the lifter. Shot blasting holes are uniformly distributed in the side walls of the shot blasting pipes, the shot blasting pipes are vertically fixed on the upper surface of the integrated plate, and each through hole corresponds to one shot blasting pipe, so that an array type spray gun mechanism is formed. And the shot collecting bin is of a conical structure and is arranged below the integrated plate. According to the shot blasting equipment, batch shot blasting treatment can be carried out on the inner wall of a pipe body or a spring, the shot blasting uniformity is high, the shot blasting treatment efficiency of the special parts is remarkably improved, and the treatment cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of shot peening, and in particular to a high-efficiency shot peening device for the inner wall of a tube body or a spring. Background Art

[0002] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the invention, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art that has been known to ordinary technicians in the field.

[0003] Shot peening is the process of continuously impacting the surface of a workpiece with high-speed steel shots, ceramic shots, etc., so that the surface of the workpiece undergoes plastic deformation and forms a residual compressive stress layer, which helps to offset some of the tensile stress on the workpiece during service and improve the fatigue strength and wear resistance of the workpiece. This surface strengthening process is currently widely used in the processing of mechanical parts. Traditional shot peening equipment is mostly used to strengthen the outer surface of parts, but for workpieces with inner surfaces such as pipes or springs, the existing shot peening technology is difficult to effectively cover their inner walls, and when peening the inner surface, the shot peening uniformity is poor, making it difficult to achieve the ideal cleaning and strengthening effect.

[0004] In order to overcome the above problems, overspraying is usually used to ensure that the inner surface of the tube or spring is treated as comprehensively as possible. However, this method is not only more time-consuming, increases production costs and has a long production cycle, but overspraying can also easily cause excessive damage to local parts of the workpiece. In addition, the current shot peening equipment has a low efficiency in recycling and reusing shot materials, and is not well suited for shot peening of the inner wall of the tube or spring. Summary of the invention

[0005] In view of the above problems, the present invention proposes an efficient shot peening device for the inner wall of a tube body or a spring, which can perform batch shot peening on the inner wall of a tube body or a spring, and has high shot peening uniformity, significantly improving the shot peening efficiency for such special parts and reducing the processing cost. Specifically, the technical solution of the present invention is as follows.

[0006] A high-efficiency shot peening device for the inner wall of a tube body or a spring comprises: a support plate, a guide pressure plate, a first lifter, an integrated plate, a second lifter, a shot peening tube and a shot collecting bin. Wherein: the support plate is fixedly arranged horizontally, and has evenly distributed through holes on its plate surface. The guide pressure plate is arranged parallel to the upper part of the support plate, and the guide pressure plate is fixedly connected to the first lifter above it. The integrated plate is arranged obliquely relative to the horizontal plane directly below the support plate, and the integrated plate is connected to the second lifter to drive the integrated plate to rise and fall. The side wall of the shot peening tube is evenly covered with shot peening holes, and the upper end of the shot peening tube is closed and the lower end is open. The shot peening tube is vertically fixed on the upper surface of the integrated plate, and each of the through holes corresponds to a shot peening tube, thereby forming an array-type spray gun mechanism, and the outer diameter of the shot peening tube is smaller than the aperture of the through hole, so that the shot peening tube can enter the tube body or spring through the through hole. The shot collecting bin is of a conical structure and is arranged below the integrated plate so as to collect the shot discharged from the shot blasting pipe onto the integrated plate and then rolled down for recycling.

[0007] Furthermore, the shot blasting pipe, the pellet storage tank and the air compressor are connected in sequence, so that the pellets in the pellet storage tank are sent to the shot blasting pipe for shot blasting by high-speed airflow. The pellet collection bin is connected to the pellet storage tank.

[0008] Furthermore, it also includes a workpiece positioning device, wherein the upper port of the tapered tube has an outer edge plate, and the inner wall of the lower port has spaced protrusions. The through hole on the support plate is a tapered port matching the tapered tube, and the tapered tube is located in the through hole, the outer edge plate is supported on the upper surface of the support plate, and the shot peening tube can enter and exit the lower port of the tapered tube.

[0009] Furthermore, the through hole is located in a groove on the upper surface of the support plate, and the outer edge plate is located in the groove and is flush with the upper surface of the support plate.

[0010] Furthermore, the tapered side wall of the tapered tube has an inclination angle of 5 to 15°, so that the tube body or the spring can be automatically centered when placed in the tapered tube.

[0011] Furthermore, the inclination angle of the integrated board relative to the horizontal plane is 10-30 degrees, so that the pellets discharged downward from the through holes after shot peening can automatically roll down to the pellet collection bin below for recycling after falling onto the integrated board.

[0012] Furthermore, the device further comprises a removal device of the workpiece positioning device, which comprises a hollow truncated cone and a handle. The hollow truncated cone has an electromagnet, and the hollow truncated cone is fixedly connected to the lower end of the handle. The hollow truncated cone can enter the conical tube and the side walls of the two are attached to each other.

[0013] Furthermore, a switch connected to the electromagnet is provided on the upper surface of the handle to control the opening and closing of the electromagnet.

[0014] Furthermore, a flexible sealing layer is provided on the lower surface of the guide plate. Optionally, the material of the flexible sealing layer includes any one of rubber, plastic and the like.

[0015] Furthermore, a movable cleaning mechanism is provided on one side of the upper surface of the support plate, which can reciprocate between the two sides of the support plate to remove debris on the support plate. Optionally, the cleaning unit in the movable cleaning mechanism includes any one of a brush and a purge tube.

[0016] Compared with the prior art, the present invention has at least the following beneficial technical effects: the shot peening equipment of the present invention adopts a new structure different from the traditional equipment of this type, and can perform batch shot peening on the inner wall of the tube body or spring, and the shot peening uniformity is high, which significantly improves the shot peening efficiency for such special parts and reduces the processing cost. First, the present invention can realize the batch placement of the tube body or spring to be processed by using the support plate, and then the tube body or spring is pressed on the support plate by the guide pressure plate. At this time, the integrated board carries the array-distributed shot peening tube from the bottom of the support plate through its through hole into the inner cavity of the tube body or spring. The shot peening tube uses the shot particles sprayed around to impact the inner wall of the tube body or spring, which not only covers the inner wall evenly, reduces dead angles and blind spots, but also has high efficiency. At the same time, when the spring is shot peened, the side wall of the spring in an unclosed state can be transformed into a closed tube-like structure by pressing the guide pressure plate, thereby preventing the shot particles from flying out of the gap on the side of the spring, and improving the efficiency of shot peening. In addition, the guide plate forms a closure on the upper port of the tube or spring, so that the carrier gas ejected from the shot peening tube carrying the shot can only be discharged from the lower port of the tube or spring, thereby improving the discharge and collection efficiency of the shot, and avoiding the problem that the shot splashes everywhere in the shot peening room and is not easy to collect. In addition, the shot peening equipment of the present invention also has a workpiece positioning device that can be detachably installed in the through hole of the support plate. This special structure formed by the middle tapered tube and the outer edge plate protruding outward from the upper port and the convex block protruding inward from the lower port can not only use its tapered hole and the tube or spring to automatically center it, so that the tube or spring and the shot peening tube are kept in a coaxial state as much as possible, and the uniformity of the shot peening treatment is improved. At the same time, the convex block can not only support the tube or spring, but also has the function of discharging impurities. In addition, this detachable workpiece positioning device can achieve the change of the tube diameter by changing the thickness of the side wall of the tapered tube, so that it can be suitable for the positioning and installation of tubes or springs with different tube diameter specifications within a certain range without changing the size of the through hole of the support plate. Furthermore, it is also possible to simultaneously process tubes or springs of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 Schematic diagram of the structure of the shot blasting equipment in the following embodiments.

[0019] Figure 2 Schematic diagram of the interior of the shot blasting equipment in the following embodiments.

[0020] Figure 3 Schematic diagram of the structure of the support plate in the following embodiments.

[0021] Figure 4 Schematic diagram of the structure of the array spray gun mechanism in the following embodiments.

[0022] Figure 5 Schematic diagram of the structure of the workpiece positioning device in the following embodiments.

[0023] Figure 6 1 is a top view of the workpiece positioning device in the following embodiments.

[0024] Figure 7 2 is a cross-sectional view of a workpiece positioning device in the following embodiment.

[0025] Figure 8 Schematic diagram of the structure of the removal device in the following embodiments.

[0026] The marks in the above figure represent: 1-support plate, 2-guide pressure plate, 3-first lifter, 4-integrated plate, 5-second lifter, 6-shot blasting pipe, 7-shot collecting bin, 8-shot storage tank, 9-air compressor, 10-brush, 11-moving rod, 12-slider, 13-drive motor, 14-conical tube, 15-outer plate, 16-bump, 17-tube body, 18-hollow frustum, 19-handle, 20-switch, 101-through hole, 102-groove, 201-shot blasting room, 202-door, 203-bracket, 204-flexible sealing layer. DETAILED DESCRIPTION

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or component needs to have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0030] The high-efficiency shot peening equipment for the inner wall of a tube body or a spring of the present invention will now be further described in conjunction with the accompanying drawings and specific embodiments of the specification.

[0031] refer to Figures 1 to 4 , an example of a high-efficiency shot peening device for the inner wall of a tube or spring is provided, which mainly includes the following components: a support plate 1, a guide pressure plate 2, a first lifter 3, an integrated plate 4, a second lifter 5, a shot peening tube 6 and a shot collecting bin 7. Specifically: the support plate 1 is fixedly arranged horizontally, and a plurality of through holes 101 are evenly distributed on the plate surface. The diameter of the through hole 101 is between the inner diameter and the outer diameter of the inner wall of the tube or spring to be processed, so that the bottom end of the inner wall of the tube or spring can be supported, and the shot particles in the inner wall of the tube or spring after shot peening can be discharged from the lower port of the tube or spring.

[0032] The guide plate 2 is arranged parallel to the support plate 1 and is directly above the support plate 1. The guide plate 2 is fixedly connected to the lower end of the lifting rod of the first lifter 3 above the guide plate 2. The first lifter 3 can use a hydraulic lifting device to drive the guide plate 2 to rise and fall. Figure 1 , the support plate 1 and the guide plate 2 can be arranged in the shot peening chamber 201, and the first lifter 3 is arranged above the shot peening chamber 201, and its lifting rod passes through the top wall of the shot peening chamber 201 and is fixedly connected to the center of the upper surface of the guide plate 2. The shot peening chamber 201 has an openable hatch 202 to facilitate the placement of pipes or springs that need to be shot peened. The shot peening chamber 201 is supported on the ground by a bracket 203, so that the shot collection bin 7 is arranged at the bottom of the shot peening chamber 201. It should be understood that any other suitable shot peening chamber can also be used to confine the shot peening process to a closed space to prevent the shot particles from splashing.

[0033] The integrated plate 4 is arranged obliquely relative to the horizontal plane directly below the support plate 1, and the side of the integrated plate 4 is fixedly connected to the lifting rod (such as a hydraulic rod, an electric push rod, etc.) of the second lifter 5, thereby driving the integrated plate 4 to rise and fall. The side wall of the shot peening tube 6 is evenly covered with shot peening holes, and the upper end of the shot peening tube 6 is closed and the lower end is open. The shot peening tube 6 is vertically fixed on the upper surface of the integrated plate 4, and each through hole 101 on the support plate 1 corresponds to a shot peening tube 6, thereby forming an array-type spray gun mechanism, and the outer diameter of the shot peening tube 6 is smaller than the aperture of the through hole 101, so that the shot peening tube 6 enters the tube body or spring through the through hole 101. At the same time, the integrated plate 4 has an opening connected to the lower port of the shot peening tube 6, so that the pellets used for shot peening can be transported from the bottom of the integrated plate 4 to the shot peening tube 6. During the shot peening process, the lower end of the shot peening pipe 6 is connected to the shot storage tank 8 through a sealed connecting pipe, and the shot storage tank 8 is connected to the air compressor 9. The shot storage tank 8 stores the shots required for the shot peening process. After the high-speed airflow provided by the air compressor 9 enters the shot storage tank 8, the shots in the tank are pushed through the sealed connecting pipe to the shot peening pipe 6, and are ejected from the shot peening holes at high speed onto the inner wall of the pipe body or spring, causing slight plastic deformation on the surface, thereby improving the surface hardness, eliminating stress, enhancing fatigue strength, and cleaning the oxide layer or coating.

[0034] The shot collecting bin 7 is a conical structure, which is arranged on the bottom surface of the shot blasting chamber 201 below the integrated board 4, and the shot collecting bin 7 is connected to the shot blasting chamber 201. The bottom of the shot collecting bin 7 is connected to the shot storage tank 8 located below it, so that the shot discharged from the integrated board 4 can be recycled and added to the shot storage tank 8 for use. When the inner wall of the tube body or spring needs to be shot blasted, the hatch 202 of the shot blasting chamber 201 is opened, and then the tube body or spring is placed on the support plate 1, and the lower port of the tube body or spring is aligned with the through hole 101 on the support plate 1, so that the lower port is completely exposed in the through hole 101. Then the first lifter 3 is started to drive the guide plate 2 to descend to press the tube body or spring downward, so that it is pressed tightly on the support plate 1. Then start the second lifter 5 to drive the array spray gun mechanism to move upward, so that the shot peening tube 6 enters the tube body or spring. It should be understood that at this time, the integrated board 4 is not attached to the support plate 1, but there is a gap between the two, for example, the gap height is 2cm, 3cm, etc. In addition, the side wall of the shot peening tube 6 located outside / lower part of the tube body or spring is not provided with the shot peening hole. Finally, start the air compressor 9 and other equipment, use high-speed airflow / carrier gas to send the pellets in the pellet storage tank 8 into the shot peening tube 6, and then the pellets are uniformly ejected from the shot peening holes on the side wall of the shot peening tube 6 to impact the inner wall of the tube body or spring. The pellets that have completed the impact are discharged from the lower port and through hole 101 of the tube body or spring and fall onto the integrated board 4. Since the integrated board 4 is inclined, the pellets falling on its upper surface can automatically roll down, thereby preventing accumulation on the integrated board 4, and also facilitating the recycling of the pellets. Optionally, the inclination angle of the integrated board 4 relative to the horizontal plane is arbitrarily selected between 10° and 30°, such as 10°, 15°, 20°, 25°, 30°, etc., and any other suitable angle may also be adopted.

[0035] First, the shot peening equipment of this embodiment can perform batch shot peening on the inner wall of the tube body or spring, and the shot particles ejected from the shot peening tube 6 to the surrounding areas can cover the inner wall more evenly when impacting the inner wall of the tube body or spring, effectively avoiding the problem of dead angles or blind spots, significantly improving the shot peening efficiency for special parts such as tube bodies or springs, and reducing the processing cost. Secondly, when the spring is shot peened, the unclosed side wall of the spring is transformed into a closed pipe-like structure by pressing the guide plate 2, thereby preventing the shot particles from flying out of the gap on the side of the spring, and improving the efficiency of shot peening. Secondly, the guide plate 2 forms a closure on the upper port of the tube body or spring, so that the carrier gas ejected from the shot peening tube 6 carrying the shot can only be discharged from the lower port of the tube body or spring, thereby improving the discharge and collection efficiency of the shot, and avoiding the problem that the shot splashes everywhere in the shot peening room and is inconvenient to collect.

[0036] In another embodiment, reference Figure 2 , a movable cleaning mechanism is also provided on one side of the upper surface of the support plate 1 of the shot blasting equipment of the above embodiment, wherein the cleaning unit (such as a brush 10) is fixed on a moving rod 11, and one end of the moving rod 11 is slidably connected to the slide rod by a slider 12, and the other end is threadedly connected to a lead screw through a slider, and one end of the lead screw is connected to a driving motor 13 so as to drive the lead screw to reciprocate, thereby enabling the brush 10 to clean the pellets, debris, etc. on the upper surface of the support plate 1. After cleaning, the brush 10 is driven to the side of the shot blasting chamber 201. A purge pipe can also be used as the cleaning unit, and the purge pipe has an air jet hole that is inclined and faces the upper surface of the support plate 1, and the purge pipe is connected to an air conveying mechanism to convey air into the purge pipe to purge the support plate 1.

[0037] In another embodiment, reference Figure 2 A flexible sealing layer 204 is fixed on the lower surface of the guide plate 2 of the shot peening equipment of the above embodiment, and its material can be selected from rubber, plastic, etc. The flexible sealing layer 204 not only forms a better seal for the upper port of the tube body or the spring, but also helps to reduce the impact of the pellets on the guide plate 2, avoids increasing the surface roughness of the guide plate 2, reduces the sealing effect on the upper port of the tube body or the spring, and reduces the discharge efficiency of the pellets.

[0038] In another embodiment, the shot peening equipment of the above embodiment further includes a workpiece positioning device. Figure 5 , Figure 6 and Figure 7 The outer side wall of the upper port / larger diameter port of the tapered tube 14 of the workpiece positioning device is provided with an outer edge plate 15, which can be a circular plate or a square plate, as long as the tapered tube 14 can be supported on the support plate 1 by the outer edge plate 15 when the tapered tube 14 is located in the through hole 101 on the support plate 1. The inclination angle of the tapered side wall of the tapered tube 14 can be arbitrarily selected between 5 and 15 degrees, such as 5 degrees, 10 degrees, 15 degrees, etc.

[0039] The inner wall of the lower port / smaller diameter port of the tapered tube 14 has a plurality of protrusions 16 distributed at intervals, and in this embodiment, there are four protrusions 16. The through hole 101 is a tapered port matching the tapered tube 14. When in use, the tapered tube 14 is located in the through hole 101, the outer edge plate 15 is supported on the upper surface of the support plate 1, and the outer side wall of the tapered tube 14 is attached to the side wall of the through hole 101, so that the tapered tube 14 remains stable. The shot peening tube 6 can enter and exit the lower port of the tapered tube 14. When in use, the lower end of the tube body or spring is placed in the tapered tube 14. At this time, the special structure formed by the middle tapered tube 14, the outer edge plate 15 protruding outward from the upper port, and the protrusion 16 protruding inward from the lower port in this embodiment can not only utilize its tapered hole and the tube body 17 or spring to automatically center it, so that the tube body or spring and the shot peening tube 6 are kept in a coaxial state as much as possible, thereby improving the uniformity of the shot peening treatment. At the same time, the protrusion 16 can not only support the tube body or spring, but also has the function of discharging impurities, so as to prevent the impurities deposited in the tapered tube 14 from affecting the placement of the tube body or spring. In addition, the detachable workpiece positioning device of this embodiment can change the tube diameter by changing the thickness of the side wall of the tapered tube 14, so it can be applied to the positioning and installation of tube bodies or springs with different tube diameters within a certain range without changing the size of the through hole 101 of the support plate 1. Furthermore, it can also realize the simultaneous processing of tube bodies or springs of different specifications.

[0040] In another embodiment, reference Figure 7 Each of the through holes 101 on the upper surface of the support plate 1 of the shot peening equipment in the above embodiment has a groove 102 distributed circumferentially therearound, and when the outer edge plate 15 is located in the groove 102, the upper surface of the outer edge plate 15 is flush with the upper surface of the support plate 1.

[0041] In another embodiment, the shot peening equipment of the above embodiment further comprises a removal device of the workpiece positioning device. Figure 8 , the removal device includes a hollow circular frustum 18 and a handle 20. An electromagnet is provided in the hollow circular frustum 18, and the hollow circular frustum is fixedly connected to the lower end of the vertically arranged handle 20. The hollow circular frustum 18 can enter the conical tube 14 and the side walls of the two are in contact with each other. When in use, the staff holds the upper end of the handle 20, places the hollow circular frustum 18 in the conical tube 14, and then starts the electromagnet to magnetically adsorb and connect the hollow circular frustum 18 and the conical tube 14 together, so as to facilitate the removal of the workpiece positioning device from the through hole 101. After turning off the electromagnet, the hollow circular frustum 18 is separated from the conical tube 14, so as to facilitate the removal of the next workpiece positioning device. In a more preferred embodiment, a switch 19 connected to the electromagnet is provided on the upper surface of the handle 20 to more conveniently control the opening and closing of the electromagnet.

[0042] Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Although the above describes the specific implementation of the present invention in conjunction with the drawings, it is not a limitation of the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. An efficient shot peening device for the inner wall of a tube or spring, characterized in that: include: A support plate, the support plate is fixedly arranged horizontally, and has evenly distributed through holes on its surface; A guide plate, which is arranged parallel to the support plate and fixedly connected to the first lifter above the guide plate; An integrated board, the integrated board is arranged obliquely relative to a horizontal plane and is directly below the support board, and the integrated board is connected to the second lifter; A shot peening tube, the side wall of which is evenly covered with shot peening holes, and the upper end of the shot peening tube is closed and the lower end is open; the shot peening tube is vertically fixed on the upper surface of the integrated board, each of the through holes corresponds to a shot peening tube to form an array-type spray gun mechanism, and the outer diameter of the shot peening tube is smaller than the aperture of the through hole; The pill collecting bin is of a conical structure and is arranged below the integrated plate.

2. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 1, characterized in that: The shot blasting pipe, the pellet storage tank and the air compressor are connected in sequence so as to utilize high-speed airflow to deliver the pellets in the pellet storage tank into the shot blasting pipe for shot blasting treatment; the pellet collection bin is connected to the pellet storage tank.

3. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 1, characterized in that: It also includes a workpiece positioning device, the upper port of the tapered tube has an outer edge plate, and the inner wall of the lower port has spaced protrusions; the through hole on the support plate is a tapered port matching the tapered tube, and the tapered tube is located in the through hole, the outer edge plate is supported on the upper surface of the support plate, and the shot peening tube can enter and exit the lower port of the tapered tube.

4. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 3, characterized in that: The through hole is located in a groove on the upper surface of the support plate, and the outer edge plate is located in the groove and is flush with the upper surface of the support plate.

5. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 3, characterized in that: The inclination angle of the tapered side wall of the tapered tube is 5-15°.

6. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 3, characterized in that: It also includes a removal device for the workpiece positioning device, which includes a hollow frustum and a handle. The hollow frustum has an electromagnet and is fixedly connected to the lower end of the handle. The hollow frustum can enter the conical tube and the side walls of the two are in contact with each other.

7. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 6, characterized in that: A switch connected to the electromagnet is provided on the upper surface of the handle to control the opening and closing of the electromagnet.

8. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 1, characterized in that: The inclination angle of the integrated board relative to the horizontal plane is 10-30°.

9. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to claim 1, characterized in that: A flexible sealing layer is provided on the lower surface of the guide plate; optionally, the material of the flexible sealing layer includes any one of rubber and plastic.

10. The high-efficiency shot peening equipment for the inner wall of a tube or spring according to any one of claims 1 to 7, characterized in that: A movable cleaning mechanism is also provided on one side of the upper surface of the support plate, and the mechanism can reciprocate between the two side edges of the support plate; optionally, the cleaning unit in the movable cleaning mechanism includes any one of a brush and a purge tube.

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