Electric power tool surface paint spraying device

Abstract

The invention discloses an electric power tool surface paint spraying device which comprises a base, a spraying box is fixed to the upper end of the base, fixing columns are fixed to the two sides in the spraying box, a hydraulic lifting mechanism is installed on one sides of the fixing columns, and a protection box is detachably installed at the lower end of the hydraulic lifting mechanism. And one side of the protection box is slidably connected to one end of the fixing column, rotating equipment is installed in the protection box, a spraying pipeline is installed on the rotating equipment, and a spraying liquid conveying mechanism is installed on one side of the spraying box. By integrating hydraulic control, rotary spraying, intelligent conveying and bearing positioning systems, the spraying efficiency and quality are remarkably improved, the problem of spraying dead angles is solved, the coverage integrity is improved, the automation level is improved, the manual dependence is reduced, the coating adhesive force can be enhanced, the product quality is improved, in addition, the modular design is adopted, maintenance and expansion are convenient, and the application range is wide. The operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power tool surface paint spraying, and particularly relates to a power tool surface paint spraying device. BACKGROUND

[0002] In the field of power tool manufacturing and maintenance, the paint spraying process is an important link to ensure the appearance and corrosion resistance of products. However, the traditional spraying method mainly relies on manual operation or fixed-angle nozzles, which has the following significant problems: 1. Serious dead angle problem Due to the complex structure of power tools, which often contains threaded holes, internal grooves, gear gaps and other small structures, the traditional spray gun is limited by the fixed angle of the nozzle, and it is difficult to achieve full coverage, resulting in uneven coating thickness. In high humidity, salt spray and other harsh environments, the weak area of the coating is easily corroded, reducing the service life of the product; 2. Low automation and strong dependence on manual operation Existing spraying equipment is mainly linear guide type or mechanical arm type, which can only adapt to planar or simple curved surface structures, and has poor adaptability to the special-shaped surface of power tools. Manual re-spraying is still required after spraying, which is low in efficiency and has large manual errors, affecting the consistency of product quality; Therefore, we propose a power tool surface paint spraying device to solve the above problems. SUMMARY

[0003] The purpose of the present application is to solve the problems in the prior art and provide a power tool surface paint spraying device.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: A power tool surface paint spraying device, comprising a base, a spraying box is fixed to the upper end of the base, fixed columns are fixed to both sides in the spraying box, a hydraulic lifting mechanism is installed on one side of the fixed column, a protection box is detachably installed at the lower end of the hydraulic lifting mechanism, the protection box is slidably connected to one end of the fixed column, a rotating device is installed in the protection box, a spraying pipeline is installed on the rotating device, a spraying liquid conveying mechanism is installed on one side of the spraying box, the spraying liquid conveying mechanism is connected with the spraying pipeline, a bearing structure is arranged at one end of the fixed column, and the bearing structure corresponds to the spraying pipeline.

[0005] Preferably, the hydraulic lifting mechanism comprises a fixed frame fixed to one side of the fixed column, a hydraulic cylinder is installed on the fixed frame, the piston rod of the hydraulic cylinder penetrates through the side wall of the fixed frame and extends to the lower end of the fixed frame, and a connecting plate is fixed to the end of the piston rod of the hydraulic cylinder.

[0006] Preferably, the upper end of the protection box is fixed with a fixed plate on both sides, the four corners of the fixed plate are connected through first screws, and the connecting plate is connected to the upper end of the fixed plate through four second screws.

[0007] Preferably, one side of the fixed plate is fixed with a mounting rack, one side of the mounting rack is fixed with a sliding block, one side of the fixed column is fixed with a guide rail, and one sliding block on the same side is clamped on one guide rail on the same side.

[0008] Preferably, the spraying pipeline comprises a spray pipe rotatably connected between opposite side walls in the protection box, a rotary joint is rotatably connected to one side of the protection box, one end of the spray pipe is connected to the rotary joint, a plurality of connecting pipes are fixed at equal intervals at the lower end of the spray pipe, a plurality of openings are arranged at equal intervals at the lower end of the protection box, one connecting pipe on the same side penetrates one opening on the same side, and a spray head is connected to the lower end of the connecting pipe.

[0009] Preferably, the rotating device comprises a motor mounting support fixed in the middle of the protection box, a stepping motor is mounted at the upper end of the motor mounting support, a sprocket is fixedly sleeved on the output shaft of the stepping motor and the spray pipe, and the two sprockets are connected through a chain.

[0010] Preferably, the spraying liquid conveying mechanism comprises a support plate fixed on one side of the spraying box, a paint tank is mounted on the support plate, a conveying pump is mounted in the paint tank, one end of the conveying pump is connected with a conveying pipe, and one end of the conveying pipe penetrates the side wall of the spraying box and is connected to one side of the rotary joint.

[0011] Preferably, the bearing structure comprises a bearing box fixed on one side in the spraying box, the bearing box is provided with a bearing groove, and the bearing groove is provided with a bearing frame.

[0012] Preferably, a cover is hingedly connected to one side of the spraying box, and a handle is fixed to one side of the cover.

[0013] In the present application, when spraying: 1. Preparation stage: workpiece loading and system starting Open the cover, open the spraying box through the handle, place the power tool workpiece to be sprayed on the bearing structure composed of the bearing box, the bearing frame and the bearing groove, ensure stable positioning of the workpiece, close the cover, start the system, and enter the spraying preparation state; 2. Spraying path planning and positioning: The hydraulic lifting mechanism drives the connecting plate to move vertically through the hydraulic cylinder, the connecting plate is fixed on the fixed plate through the second screw, the fixed plate is connected with the mounting frame, the sliding block on the mounting frame slides along the guide rail on the fixed column, vertical and horizontal linkage control of the spray head is realized, the lifting speed and direction of the hydraulic cylinder are controlled through the path planning algorithm, and the spray head is accurately positioned to the spraying starting point; 3. Spray liquid delivery and temperature control: The delivery pump in the paint tank is started, paint is delivered to the rotary joint through the delivery pipe, the rotary joint delivers the paint to the spray pipe, and then the paint is sprayed through the connecting pipe and the spray head, the system is provided with a built-in constant temperature control device, so that the temperature of the spray liquid is maintained at 30±2 DEG C, and the flowability is prevented from being reduced due to low temperature to affect the spraying quality; 4. Rotary spraying and multi-angle coverage: The step motor drives the chain wheel to drive the spray pipe to move reciprocatingly, the spray pipe drives multiple connecting pipes and spray heads to swing and spray at multiple angles, the spray head moves at a uniform speed of 20 cm / s, so that the coating is uniformly distributed, the rotary angle and speed can be programmed and controlled, and the spraying demand of different structural features can be met. 5. Reverse spraying and comprehensive coverage: After single-sided spraying is completed, the system prompts an operator to take out the workpiece and place it reversely on the bearing structure, and the spraying process is executed again, so that each surface of the power tool is effectively covered, especially the grooves and holes that are difficult to reach.

[0014] The present application has the following advantages: 1. The multi-spray head structure cooperates with the rotary spray pipe to realize 360-degree dead angle-free spraying, and is particularly suitable for spraying of complex structures such as threaded holes, inner grooves and gear gaps, effectively improves coating uniformity and enhances rust prevention and corrosion resistance; 2. The combination of hydraulic lifting, sliding rail sliding block and step motor forms a flexible multi-axis control system, supports path planning and spraying parameter setting, is suitable for different models of power tools, reduces manual operation, improves spraying efficiency and consistency, and reduces production cost; 3. The spray liquid temperature is constantly controlled to ensure paint flowability and adhesion effect, the spray head moves at a uniform speed and cooperates with rotary action to make the coating uniformly adhere and reduce bubbles and falling; 4. Each component adopts a modular mounting structure, which is convenient for later replacement, maintenance and upgrading, can be expanded into a multi-station automatic spraying system, and meets the batch production demand; In summary, the present application integrates hydraulic control, rotary spraying, intelligent delivery and bearing positioning system, significantly improves spraying efficiency and quality, solves the problem of spraying dead angle, improves coverage integrity, improves the automation level, reduces the dependence on manual operation, can enhance the adhesion of the coating, improve the product quality, in addition, the modular design is convenient for maintenance and expansion, and reduces the operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram for the hydraulic lifting mechanism of the present application; Figure 2 External structure diagram of the present application; Figure 3 Carrying structure and spraying pipeline corresponding structure diagram of the present application; Figure 4 Spraying pipeline and rotating equipment connection structure diagram of the present application; Figure 5 Opening setting structure diagram of the present application; Figure 6 Figure 1 Enlarged view of structure at A of the present application.

[0016] In the figure: 1 hydraulic cylinder, 2 guide rail, 3 fixed column, 4 mounting rack, 5 connecting plate, 6 protection box, 7 sliding block, 8 fixed rack, 9 conveying pipe, 10 spray head, 11 connecting pipe, 12 spray pipe, 13 baffle, 14 chain wheel, 15 stepping motor, 16 motor mounting support, 17 rotating joint, 18 opening, 19 spraying box, 20 paint tank, 21 support plate, 22 cover, 23 handle, 24 first screw, 25 fixed plate, 26 base, 27 carrying box, 28 carrying rack, 29 carrying groove, 30 second screw, 31 chain. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0018] With reference to Figures 1-6 , an electric power tool surface paint spraying device includes a base 26, which is the basic support structure of the entire paint spraying device and is made of high-strength steel and welded, having good pressure resistance and stability. The upper end of the base 26 is fixed with a spraying box 19, which is a closed working space and is internally provided with an explosion-proof coating and a ventilation treatment system to prevent paint mist accumulation and explosion risk during spraying and to ensure the safety of the operator. Both sides of the spraying box 19 are fixed with fixed columns 3, one side of the fixed column 3 is provided with a hydraulic lifting mechanism, the lower end of the hydraulic lifting mechanism is detachably provided with a protection box 6, one side of the protection box 6 is slidingly connected to one end of the fixed column 3, the protection box 6 is internally provided with a rotating equipment, the rotating equipment is provided with a spraying pipeline, one side of the spraying box 19 is provided with a spraying liquid conveying mechanism, the spraying liquid conveying mechanism is connected with the spraying pipeline, one end of the fixed column 3 is provided with a carrying structure, the carrying structure corresponds to the spraying pipeline. ​The hydraulic lifting mechanism comprises a fixed frame 8 fixed on one side of the fixed column 3, a hydraulic cylinder 1 installed on the fixed frame 8, a piston rod of the hydraulic cylinder 1 penetrating through the side wall of the fixed frame 8 and extending to the lower end of the fixed frame 8, a connecting plate 5 fixed at the end of the piston rod of the hydraulic cylinder 1, and the piston rod of the hydraulic cylinder 1 extending vertically downward and connected with the protection box 6 through the connecting plate 5 to realize the up-down movement control of the spray head 10. The hydraulic system is provided with a pressure sensor and a limit switch to ensure that the equipment will not be damaged due to overload or misoperation during lifting. Meanwhile, the automatic lifting path planning can be realized through the PLC control system. The upper end of the protection box 6 is fixed with fixed plates 25 on both sides, the four corners of the fixed plate 25 are connected through first screws 24, the connecting plate 5 is connected to the upper end of the fixed plate 25 through four second screws 30, one side of the fixed plate 25 is fixed with a mounting frame 4, one side of the mounting frame 4 is fixed with a sliding block 7, one side of the fixed column 3 is fixed with a guide rail 2, one sliding block 7 on the same side is clamped on one guide rail 2 on the same side, and the sliding block 7 slides in cooperation with the guide rail 2 on the fixed column 3 to realize the guiding function of the horizontal movement of the spray head. The spraying pipeline comprises a spray pipe 12 rotatably connected between the opposite side walls in the protection box 6, a rotary joint 17 rotatably sleeved on one side of the protection box 6, and the spray pipe 12 connected to the rotary joint 17. A plurality of connecting pipes 11 are fixed at equal intervals at the lower end of the spray pipe 12, and a plurality of openings 18 are provided at equal intervals at the lower end of the protection box 6. One connecting pipe 11 on the same side penetrates one opening 18 on the same side, and the lower end of the connecting pipe 11 is connected with the spray head 10. The spray pipe 12 is connected with the conveying pipeline through the rotary joint 17 to ensure continuous conveying of the paint during rotation. The plurality of connecting pipes 11 are fixed below the spray pipe 12, and the spray head 10 is installed at the end of the connecting pipe 11 to realize multi-point synchronous spraying. The spray head 10 can be replaced with nozzles of different diameters or angles to meet the requirements of different spraying thicknesses and coverage ranges. The rotating device comprises a motor mounting bracket 16 fixed in the middle of the protection box 6, a stepping motor 15 mounted on the upper end of the motor mounting bracket 16, and chain wheels 14 fixedly sleeved on the output shaft of the stepping motor 15 and the spray pipe 12. The two chain wheels 14 are connected by a chain 31. The stepping motor 15 drives the spray pipe 12 to rotate through the chain wheel 14 and the chain 31 to realize the reciprocating swing spraying of the spray head 10. The stepping motor 15 is controlled by PLC to accurately control the rotation angle, speed and direction. The system can set multiple rotation spraying paths, such as 30°-60°-90° different spraying angles, to adapt to the spraying requirements of different shapes of power tool surfaces. The spraying liquid conveying mechanism comprises a support plate 21 fixed on one side of the spraying box 19, a paint tank 20 installed on the support plate 21, a conveying pump installed in the paint tank 20, and a conveying pipe 9 connected to one end of the conveying pump, wherein one end of the conveying pipe 9 penetrates through the side wall of the spraying box 19 and is connected to one side of the rotary joint 17, the paint tank 20 is provided with a stirring device and a constant temperature control system, so that the paint is uniformly and stably maintained at 30±2 DEG C, the conveying pump conveys the paint to the rotary joint 17 through the conveying pipe 9, and finally the paint is sprayed out through the spray head 10, the spray head moves at a uniform speed of 20 cm / s, so that the coating is uniformly distributed, and the rotation angle and speed are programmable controlled to adapt to the spraying requirements of different structural features; The bearing structure comprises a bearing box 27 fixed on one side in the spraying box 19, a bearing groove 29 arranged in the bearing box 27, and a bearing frame 28 arranged in the bearing groove 29, one side of the spraying box 19 is hingedly connected with a cover 22, one side of the cover 22 is fixedly connected with a handle 23, and the bearing frame 28 is provided with an adjustable clamp structure, so that the workpiece will not be displaced during the spraying process; In the present application, when spraying: 1. Preparation stage: workpiece loading and system starting The cover 22 is opened, the spraying box 19 is opened through the handle 23, the power tool workpiece to be sprayed is placed on the bearing structure, the bearing structure is composed of the bearing box 27, the bearing frame 28 and the bearing groove 29, so that the workpiece is stably positioned, the cover is closed, the system is started, and the spraying preparation state is entered; 2. Spraying path planning and positioning: The hydraulic lifting mechanism drives the connecting plate 5 to move in the vertical direction through the hydraulic cylinder 1, and the connecting plate is fixed on the fixed plate 25 through the second screw 30; The fixed plate 25 is connected with the mounting frame 4, the sliding block 7 on the mounting frame slides along the guide rail 2 on the fixed column 3, vertical and horizontal linkage control of the spray head 10 is realized, the lifting speed and direction of the hydraulic cylinder are controlled through a path planning algorithm, and the spray head is accurately positioned to a spraying starting point; 3. Spraying liquid conveying and temperature control: The conveying pump in the paint tank 20 is started, the paint is conveyed to the rotary joint 17 through the conveying pipe 9, the rotary joint 17 conveys the paint to the spray pipe 12, and then the paint is sprayed through the connecting pipe 11 and the spray head 10, the system is provided with a built-in constant temperature control device, so that the temperature of the spraying liquid is maintained at 30±2 DEG C, and the flowability is prevented from being reduced due to low temperature to affect the spraying quality; 4. Rotating spraying and multi-angle coverage: The step motor 15 drives the chain wheel 14 to drive the spray pipe 12 to move reciprocatingly, the spray pipe 12 drives the plurality of connecting pipes 11 and the spray head 10 to swing and spray at multiple angles, the spray head moves at a uniform speed of 20 cm / s, so that the coating is uniformly distributed, and the rotation angle and speed are programmable controlled to adapt to the spraying requirements of different structural features. 5. Reverse spraying and full coverage: After the single-sided spraying is completed, the system prompts the operator to remove the workpiece and place it reversely on the bearing structure, and the spraying process is executed again to ensure that each surface of the power tool is effectively covered, especially for the previously inaccessible grooves and hole positions.

[0019] Application scenarios of the present application: Electric equipment manufacturing industry (such as circuit breaker, transformer shell, switch cabinet, etc.); High-voltage power transmission and distribution equipment surface corrosion prevention treatment; Industrial equipment shell spraying; Precise electronic component shell surface treatment; Customized spraying processing service.

[0020] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A surface painting device for power tools, comprising a base (26), characterized in that, A spray box (19) is fixed to the upper end of the base (26). Fixed columns (3) are fixed to both sides of the spray box (19). A hydraulic lifting mechanism is installed on one side of the fixed column (3). A protective box (6) is detachably installed at the lower end of the hydraulic lifting mechanism. A side of the protective box (6) is slidably connected to one end of the fixed column (3). A rotating device is installed inside the protective box (6). A spraying pipeline is installed on the rotating device. A spraying liquid conveying mechanism is installed on one side of the spray box (19). The spraying liquid conveying mechanism is connected to the spraying pipeline. A bearing structure is provided at one end of the fixed column (3). The bearing structure corresponds to the spraying pipeline.

2. The power tool surface painting device according to claim 1, characterized in that: The hydraulic lifting mechanism includes a fixed frame (8) fixed on one side of the fixed column (3), a hydraulic cylinder (1) is installed on the fixed frame (8), the piston rod of the hydraulic cylinder (1) passes through the side wall of the fixed frame (8) and extends to the lower end of the fixed frame (8), and a connecting plate (5) is fixed to the end of the piston rod of the hydraulic cylinder (1).

3. The power tool surface painting device according to claim 2, characterized in that: The upper sides of the protective box (6) are fixed with fixing plates (25), the four corners of the fixing plates (25) are connected by first screws (24), and the connecting plate (5) is connected to the upper end of the fixing plate (25) by four second screws (30).

4. The power tool surface painting device according to claim 3, characterized in that: A mounting bracket (4) is fixed on one side of the fixing plate (25), a slider (7) is fixed on one side of the mounting bracket (4), a guide rail (2) is fixed on one side of the fixing column (3), and a slider (7) on the same side is engaged with a guide rail (2) on the same side.

5. The power tool surface painting device according to claim 1, characterized in that: The spraying pipeline includes a spray pipe (12) rotatably connected between opposite side walls inside the protective box (6). A rotary joint (17) is rotatably sleeved on one side of the protective box (6). One end of the spray pipe (12) is connected to the rotary joint (17). Multiple connecting pipes (11) are fixed at equal intervals at the lower end of the spray pipe (12). Multiple openings (18) are provided at equal intervals at the lower end of the protective box (6). A connecting pipe (11) on the same side passes through an opening (18) on the same side. A nozzle (10) is connected to the lower end of the connecting pipe (11).

6. The power tool surface painting device according to claim 5, characterized in that: The rotating device includes a motor mounting bracket (16) fixed in the middle of the protective box (6). A stepper motor (15) is mounted on the upper end of the motor mounting bracket (16). A sprocket (14) is fixedly mounted on the output shaft of the stepper motor (15) and the nozzle (12). The two sprockets (14) are connected by a chain (31).

7. A power tool surface painting device according to claim 5, characterized in that: The spray liquid delivery mechanism includes a support plate (21) fixed to one side of the spray box (19), a paint tank (20) is installed on the support plate (21), a delivery pump is installed inside the paint tank (20), one end of the delivery pump is connected to a delivery pipe (9), and one end of the delivery pipe (9) passes through the side wall of the spray box (19) and is connected to one side of the rotary joint (17).

8. The power tool surface painting device according to claim 1, characterized in that: The supporting structure includes a supporting box (27) fixed inside one side of the spray box (19), the supporting box (27) is provided with a supporting groove (29), and a supporting frame (28) is installed in the supporting groove (29).

9. A power tool surface painting device according to claim 1, characterized in that: A cover (22) is hinged to one side of the spray box (19), and a handle (23) is fixed to one side of the cover (22).

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