A spraying device for guiding wheel wear processing

Abstract

The utility model relates to mechanical processing equipment technical field especially introduces a spraying device for guide wheel wear -resisting processing, including bottom box and hot spray gun, the top right side fixedly connected with fixed seat of bottom box, the inside fixed mounting of fixed seat has drive motor, the output of drive motor is provided with clamping assembly, the left side outer wall fixed mounting of bottom box has hydraulic cylinder, the telescopic end fixed connection of hydraulic cylinder has mobile seat, the side of mobile seat to fixed seat also is provided with clamping assembly, the top fixed connection of bottom box has displacement assembly. The utility model through setting adjustable two -way screw rod and V -block structure in clamping assembly, can be aimed at different diameter, width specification's guide wheel flexible adjustment clamping spacing and clamping range, effectively solved the core pain point of " slow, poor adaptation of change type" under the batch processing scene, significantly improved the compatible ability of equipment to multi -specification product.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, and in particular to a spraying device for wear-resistant processing of guide wheels. Background Technology

[0002] In fields such as construction machinery, mining machinery, and conveying equipment, idler wheels, as core transmission and guiding components, endure long-term load impacts, frictional wear, and erosion under complex working conditions. Their surface wear resistance directly determines the overall operational stability and service life of the equipment. To extend the service life of idler wheels and reduce maintenance costs, the industry commonly adopts surface coating technologies (such as tungsten carbide spraying and ceramic coating spraying) to form a high-hardness wear-resistant layer on their surface. This process has become a key step in the manufacturing and refurbishment of idler wheels.

[0003] Existing spraying devices for wear-resistant processing of guide wheels mostly adopt fixed clamping structures, such as single chuck clamping and planar tooling positioning. However, guide wheels have various specifications (such as large differences in diameter and width), and fixed clamping structures have poor adaptability, requiring frequent changes of tooling fixtures, resulting in long equipment adjustment time, low production efficiency, and difficulty in meeting the needs of batch processing. Furthermore, the clamping stability is insufficient. Planar positioning is prone to clamping deviation due to irregularities on the guide wheel surface (such as casting tolerances or wear after use), or uneven force due to single chuck clamping, which causes micro-rotation of the guide wheel during spraying, resulting in uneven coating thickness, localized missed spraying, and other quality defects, seriously affecting the protective effect of the wear-resistant layer. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing guide wheels with diverse specifications (such as large differences in diameter and width), poor adaptability of fixed clamping structures, the need for frequent changes of tooling fixtures, resulting in long equipment adjustment time, low production efficiency, and difficulty in meeting batch processing requirements; furthermore, insufficient clamping stability, and the tendency for clamping deviation due to irregularities on the guide wheel surface (such as casting tolerances or wear after use) or uneven force due to single chuck clamping, which can cause micro-rotation of the guide wheel during spraying, resulting in uneven coating thickness, localized missed spraying, and other quality defects, seriously affecting the protective effect of the wear-resistant layer. Therefore, this invention proposes a spraying device for wear-resistant processing of guide wheels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spraying device for wear-resistant processing of guide wheels includes a base box and a thermal spray gun. A fixed base is fixedly connected to the top right side of the base box. A drive motor is fixedly installed inside the fixed base. The output end of the drive motor is provided with a clamping assembly for clamping the guide wheel. A hydraulic cylinder is fixedly installed on the left outer wall of the base box. The telescopic end of the hydraulic cylinder is fixedly connected to a movable seat that is slidably connected to the inner wall of the base box. The movable seat is also provided with a clamping assembly on the side facing the fixed base. A displacement assembly for driving the thermal spray gun to move is fixedly connected to the top of the base box.

[0007] Preferably, the clamping assembly includes a fixed plate, the fixed plate has a sliding groove inside, a bidirectional lead screw is rotatably connected to the inner wall of the sliding groove, a connecting plate is threaded onto the bidirectional lead screw, and a V-block is fixedly connected to the end of the connecting plate away from the bidirectional lead screw.

[0008] Preferably, the connecting plate is arranged in a Z-shape, and the slide, connecting plate and V-block are all provided in pairs and are symmetrically distributed.

[0009] Preferably, one end of the bidirectional lead screw extends out of the fixed plate and is fixedly connected to a hexagonal block. A rubber pad is fixedly attached to the opposite side of the V-shaped block with glue. A rotating disk is fixedly connected to the side of the fixed plate away from the V-shaped block. The rotating disk on the side closer to the fixed seat is fixedly connected to the output end of the drive motor. The rotating disk on the side closer to the moving seat is rotatably connected to the moving seat.

[0010] Preferably, the displacement component includes a bracket fixedly connected to the top of the base box, a servo motor fixedly installed on the outer wall of the bracket, a limit groove opened on the top of the bracket, a ball screw rotatably connected to the inner wall of the limit groove, and a connecting block threaded onto the ball screw.

[0011] Preferably, the output end of the servo motor passes through the outer wall of the bracket and is fixedly connected to the ball screw, and the connecting block slides in conjunction with the inner wall of the limiting groove.

[0012] Preferably, L-shaped limiting plates are fixedly connected to both sides of the outer wall of the movable seat, and the limiting plates slide in cooperation with the edge of the base box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. In use, this utility model allows for flexible adjustment of the clamping spacing and range for guide wheels of different diameters and widths by incorporating an adjustable bidirectional lead screw and V-block structure in the clamping assembly. Compared to traditional fixed clamping structures, it eliminates the need for frequent tooling fixture replacements due to differences in guide wheel specifications. This not only reduces tooling procurement and maintenance costs but also significantly shortens equipment adjustment time, effectively addressing the core pain points of "slow changeover and poor adaptability" in batch processing scenarios and significantly improving the equipment's compatibility with multiple product specifications.

[0015] 2. In use, this utility model employs a servo motor-driven ball screw displacement component, combined with the sliding engagement of the connecting block and the limiting groove, to achieve high-precision movement of the thermal spray gun along the axial direction of the guide wheel. Compared to traditional manual or pneumatic drive methods, it can more accurately control the spraying path and spraying distance, ensuring uniform coverage of the wear-resistant layer on the guide wheel surface and avoiding quality defects such as localized missed spraying and uneven coating thickness. Simultaneously, the stable clamping and precise displacement coordination strengthen the bond between the wear-resistant layer and the wheel surface, significantly improving the protective effect of the wear-resistant layer. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a spraying device for wear-resistant processing of guide wheels proposed in this utility model;

[0017] Figure 2 A cross-sectional view of a spraying device for wear-resistant processing of guide wheels proposed in this utility model. Figure 1 ;

[0018] Figure 3 This is an enlarged view of section A of the structure of the spraying device for wear-resistant processing of guide wheels proposed in this utility model;

[0019] Figure 4 A cross-sectional view of a spraying device for wear-resistant processing of guide wheels proposed in this utility model. Figure 2 .

[0020] In the diagram: 1. Base box; 2. Thermal spray gun; 3. Fixed base; 4. Drive motor; 5. Clamping assembly; 6. Hydraulic cylinder; 7. Moving base; 8. Displacement assembly; 9. Fixed plate; 10. Slide groove; 11. Bidirectional lead screw; 12. Connecting plate; 13. V-block; 14. Rubber pad; 15. Rotating plate; 16. Servo motor; 17. Limit groove; 18. Ball screw; 19. Connecting block; 20. Limit plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-4 A spraying device for wear-resistant processing of guide wheels includes a base box 1 and a hot spray gun 2. The hot spray gun 2 is a Seekone brand 1800W variable temperature hot spray gun with an external powder feeder. The flow rate, pressure and spraying distance of fuel, oxygen and powder feeding gas are precisely controlled by the control system.

[0023] A fixed base 3 is bolted to the top right side of the base box 1. A drive motor 4 is bolted to the inside of the fixed base 3. The drive motor 4 is a three-phase asynchronous motor of model Y80M1-2. Its output end is connected to a clamping assembly 5 for clamping the guide wheel via a flat key. A hydraulic cylinder 6 is bolted to the left outer wall of the base box 1. The hydraulic cylinder 6 is a single-rod piston cylinder of model HOB63*500. Its telescopic end is fixed to a movable seat 7 that slides on the inner wall of the base box 1 via a flange. The movable seat 7 is also provided with a clamping assembly 5 on the side facing the fixed base 3. A displacement assembly 8 for driving the movement of the hot spray gun 2 is bolted to the top of the base box 1.

[0024] The clamping assembly 5 includes a fixed plate 9. The fixed plate 9 has a radially formed groove 10 inside. The inner wall of the groove 10 is rotatably connected to a bidirectional lead screw 11 via a bearing. The two ends of the bidirectional lead screw 11 have opposite threads, and a connecting plate 12 is symmetrically threaded onto it. A V-block 13 is fixedly connected to the end of the connecting plate 12 away from the bidirectional lead screw 11 by welding. The included angle of the V-block 13 is set to 90°-120°.

[0025] The connecting plate 12 is arranged in a Z-shape with a bending angle of 90°. The slide groove 10, the connecting plate 12 and the V-shaped block 13 are all provided in pairs and are symmetrically distributed, with the center of symmetry coinciding with the axis of the fixed plate 9.

[0026] One end of the bidirectional lead screw 11 extends out of the fixed plate 9 and is fixedly connected to a hexagonal block by welding. The hexagonal block is compatible with common wrench sizes. A rubber pad 14 is fixedly attached to the opposite side of the V-block 13 by glue. The rubber pad 14 is 3-5mm thick and has anti-slip texture on its surface. A rotating plate 15 is fixedly connected to the side of the fixed plate 9 away from the V-block 13 by bolts. The rotating plate 15 near the fixed seat 3 is fixedly connected to the output end of the drive motor 4 by a coupling. The rotating plate 15 near the movable seat 7 is rotatably connected to the movable seat 7 by a bearing.

[0027] The displacement assembly 8 includes a bracket that is fixedly connected to the top of the base box 1 by bolts. A servo motor 16 is fixedly installed on the outer wall of the bracket by bolts. The servo motor 16 is a servo motor of model 110ST-M04030. A limit groove 17 is opened on the top of the bracket along the length direction. A ball screw 18 is rotatably connected to the inner wall of the limit groove 17 by bearings. A connecting block 19 is threaded on the ball screw 18. The bottom of the connecting block 19 is fixedly connected to the hot spray gun 2 by bolts.

[0028] The output end of the servo motor 16 passes through the outer wall of the bracket and is fixedly connected to the ball screw 18 through a coupling. The outer wall of the connecting block 19 slides with the inner wall of the limiting groove 17, with a clearance of 0.05-0.1mm.

[0029] The outer walls of the movable seat 7 are fixedly connected to L-shaped limiting plates 20 by welding. The horizontal section of the limiting plate 20 slides with the top edge of the base box 1, and the vertical section slides with the side wall of the base box 1.

[0030] It should be noted that the specific models and specifications of the drive motor 4, hydraulic cylinder 6, and servo motor 16 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods use existing technology in this field, so they will not be elaborated here. All of them can be powered by external devices and controlled to turn on and off.

[0031] Working principle:

[0032] When using this device, first place the guide wheel to be sprayed between the two V-blocks 13. Then, rotate the double-acting screw 11 with a wrench to drive the connecting plates 12 and V-blocks 13 to move closer together, using the V-shaped structure with anti-slip rubber pads 14 to firmly clamp the workpiece. Next, activate the hydraulic cylinder 6 to push the moving seat 7 inward along the base box 1, working in conjunction with the clamping assembly 5 on the side of the fixed seat 3 to center and fix the guide wheel, ensuring it remains secure during spraying.

[0033] After clamping, the drive motor 4 is started to rotate the guide wheel at a uniform speed, while the spraying parameters of the thermal spray gun are set through the control system. The servo motor 16 drives the ball screw 18 to move the connecting block 19 precisely along the limiting groove 17, driving the thermal spray gun 2 to scan and spray along the workpiece axis at a uniform speed. The powder feeder, in conjunction with the heat source, melts the wear-resistant material and sprays it onto the surface of the rotating guide wheel to form a uniform coating until the entire area is covered. Then the equipment is stopped and the workpiece is unloaded.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spraying device for guiding wheel wear processing, comprising a bottom box (1) and a thermal spraying gun (2), characterized in that, A fixed base (3) is fixedly connected to the top right side of the base box (1). A drive motor (4) is fixedly installed inside the fixed base (3). A clamping assembly (5) for clamping the guide wheel is provided at the output end of the drive motor (4). A hydraulic cylinder (6) is fixedly installed on the left outer wall of the base box (1). A movable seat (7) that is slidably connected to the telescopic end of the hydraulic cylinder (6) is fixedly connected to the inner wall of the base box (1). A clamping assembly (5) is also provided on the side of the movable seat (7) facing the fixed base (3). A displacement assembly (8) for driving the hot spray gun (2) to move is fixedly connected to the top of the base box (1).

2. The spray device for guiding wheel wear machining according to claim 1, characterized in that, The clamping assembly (5) includes a fixed plate (9), the inside of which is provided with a sliding groove (10), and a bidirectional lead screw (11) is rotatably connected to the inner wall of the sliding groove (10). A connecting plate (12) is threaded onto the bidirectional lead screw (11), and a V-block (13) is fixedly connected to one end of the connecting plate (12) away from the bidirectional lead screw (11).

3. The spray device for guiding wheel wear machining according to claim 2, characterized in that, The connecting plate (12) is arranged in a Z-shape, and the slide (10), the connecting plate (12) and the V-shaped block (13) are all provided in pairs and are symmetrically distributed.

4. The spray device for guiding wheel wear machining according to claim 2, characterized in that, One end of the bidirectional lead screw (11) extends out of the fixed plate (9) and is fixedly connected to a hexagonal block. A rubber pad (14) is fixedly pasted on the opposite side of the V-shaped block (13) by glue. A rotating disk (15) is fixedly connected to the side of the fixed plate (9) away from the V-shaped block (13). The rotating disk (15) on the side closer to the fixed seat (3) is fixedly connected to the output end of the drive motor (4). The rotating disk (15) on the side closer to the moving seat (7) is rotatably connected to the moving seat (7).

5. The spray device for guiding wheel wear machining according to claim 1, characterized in that, The displacement component (8) includes a bracket fixedly connected to the top of the base box (1). A servo motor (16) is fixedly installed on the outer wall of the bracket. A limit groove (17) is opened on the top of the bracket. A ball screw (18) is rotatably connected to the inner wall of the limit groove (17). A connecting block (19) is threaded onto the ball screw (18).

6. The spray device for guiding wheel wear machining according to claim 5, characterized in that The output end of the servo motor (16) passes through the outer wall of the bracket and is fixedly connected to the ball screw (18), and the connecting block (19) slides in cooperation with the inner wall of the limiting groove (17).

7. The spray device for guiding wheel wear machining according to claim 1, characterized in that, The outer walls of the movable seat (7) are fixedly connected to L-shaped limiting plates (20), and the limiting plates (20) slide with the edge of the bottom box (1).

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