A coating spraying device for a piston surface

Abstract

This utility model belongs to the field of piston processing, and in particular, a coating spraying device for piston surfaces. It includes a worktable, a robotic arm fixedly mounted on one side of the worktable, and a coating nozzle fixedly mounted on one end of the robotic arm. A chuck housing is fixedly mounted on the top of the worktable, and a clamping chamber is formed inside the chuck housing. A chuck mechanism is provided inside the clamping chamber for clamping the piston. This utility model can prevent piston movement, and it has strong anti-interference and stability. It does not rely on pneumatic, hydraulic, or electric systems, avoiding clamping failure caused by air pressure fluctuations or oil leaks. Furthermore, the dust suction ring can absorb the coating powder that escapes during spraying, preventing it from being dispersed into the air and inhaled by workers, thus increasing the safety and environmental friendliness of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of piston processing technology, and in particular to a coating spraying device for piston surface. Background Technology

[0002] Piston machining refers to the machining of piston blanks (mostly made of materials such as aluminum alloy and cast iron) in terms of shape, size and surface precision through mechanical processing processes such as turning, milling, grinding and honing, so that they meet the assembly requirements of equipment such as engines. This includes precision machining of key parts such as piston skirt, top, ring groove and pin hole. It may also involve processes such as coating spraying and heat treatment to improve wear resistance, strength and other properties.

[0003] When applying coatings to pistons, existing equipment often uses pneumatic grippers to hold the piston in place. The pneumatic system relies on compressed air for power. When the air source pressure fluctuates (such as pressure drop in the factory pipeline network or multiple devices using air simultaneously), the clamping force of the chuck will fluctuate synchronously, which can easily cause the piston to undergo slight displacement when rotating at high speed, resulting in uneven coating thickness. Furthermore, existing equipment can easily cause some coating powder to escape during spraying, which can be inhaled by workers and affect their health.

[0004] Therefore, we propose a coating spraying device for piston surfaces to solve the above problems. Utility Model Content

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

[0006] A coating spraying device for piston surface includes a worktable, a robotic arm fixedly mounted on one side of the worktable, and a coating nozzle fixedly mounted on one end of the robotic arm; a chuck housing is fixedly mounted on the top of the worktable, a clamping chamber is provided inside the chuck housing, and a chuck mechanism is provided inside the clamping chamber for clamping the piston.

[0007] Specifically, a paint tank is fixedly installed on one side of the robotic arm, and the coating nozzle is connected to the paint tank through a flexible pipe, which facilitates the paint tank to deliver paint to the coating nozzle.

[0008] Specifically, a dust-collecting ring is fixedly installed on the top of the workbench, and the top of the dust-collecting ring is equipped with multiple dust-collecting heads to facilitate the collection of loose coating powder.

[0009] Specifically, a dust collection box is fixedly installed on one side of the workbench, an exhaust fan is fixedly installed on the bottom inner wall of the dust collection box, a connecting pipe is fixedly installed on the suction end of the exhaust fan, and the other end of the connecting pipe is fixedly connected to the dust collection ring.

[0010] Specifically, the worktable has a motor slot inside, and a servo motor is fixedly installed inside the motor slot. The output shaft of the servo motor is fixedly connected to the chuck housing. The servo motor can drive the chuck housing to rotate, thereby driving the piston to rotate.

[0011] Specifically, the chuck mechanism includes two driven helical slides, an active helical slide, three linkage racks, and a transmission gear. Three guide grooves are provided on the bottom inner wall of the clamping chamber. Two driven helical slides and an active helical slide are slidably installed on the inner side of the three guide grooves, respectively. A linkage rack is fixedly installed on one side of each of the two driven helical slides and the active helical slide. A transmission gear is rotatably installed on the bottom inner wall of the clamping chamber, and the three linkage racks mesh with the same transmission gear.

[0012] Specifically, the top of the chuck housing is provided with three sliding grooves, which are connected to the same clamping chamber. Clamps are slidably installed on the inner side of each of the three sliding grooves. The bottom of each of the three clamps is provided with a helical tooth groove. Two driven helical tooth sliders and one driven helical tooth slider are respectively adapted to the corresponding helical tooth grooves, so as to facilitate the movement of the corresponding clamps by the two driven helical tooth sliders and the driven helical tooth sliders.

[0013] Specifically, a fixed metal block is fixedly installed on the bottom inner wall of the clamping chamber, and a threaded rod is rotatably installed on one side of the fixed metal block. The active helical tooth slider is threaded onto the threaded rod, one end of the threaded rod extends out of the chuck housing, and a rotating head is fixedly installed at the end of the threaded rod extending out of the chuck housing. A cross groove is opened at one end of the rotating head to facilitate the rotation of the threaded rod by the rotating head.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: through the chuck mechanism, millimeter-level or even micron-level positioning is achieved through rigid structure and precision transmission. When positioning and clamping the piston, it can prevent its movement. At the same time, it has strong anti-interference and stability, does not rely on air pressure, hydraulic or electric systems, and avoids clamping failure caused by air pressure fluctuations or oil leakage. Furthermore, through the dust suction ring, the coating powder that is scattered during spraying can be sucked up, preventing it from being dispersed into the air and inhaled by workers, thus increasing the safety and environmental friendliness of the equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a coating spraying device for a piston surface proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural disassembly diagram of a coating spraying device for a piston surface proposed in this utility model;

[0017] Figure 3This is a three-dimensional structural diagram showing the dust collection ring, connecting pipe, and dust collection box of a coating spraying device for piston surfaces proposed in this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the chuck mechanism of a coating spraying device for piston surface proposed in this utility model.

[0019] Figure 5 This is a three-dimensional structural disassembly diagram of the chuck mechanism of a coating spraying device for the piston surface proposed in this utility model.

[0020] In the diagram: 1. Workbench; 2. Robotic arm; 3. Coating nozzle; 4. Paint tank; 5. Dust collection box; 6. Dust collection ring; 7. Connecting pipe; 8. Exhaust fan; 9. Chuck housing; 10. Servo motor; 11. Driven helical gear slider; 12. Linkage rack; 13. Fixed metal block; 14. Threaded rod; 15. Rotating head; 16. Active helical gear slider; 17. Transmission gear; 18. Clamp. Detailed Implementation

[0021] Reference Figure 1-5 A coating spraying device for piston surface includes a worktable 1, a robotic arm 2 fixedly installed on one side of the worktable 1, and a coating nozzle 3 fixedly installed at one end of the robotic arm 2; a chuck housing 9 fixedly installed on the top of the worktable 1, a clamping chamber is provided inside the chuck housing 9, and a chuck mechanism is provided inside the clamping chamber for clamping the piston.

[0022] In this embodiment, a paint tank 4 is fixedly installed on one side of the robotic arm 2, and the coating nozzle 3 is connected to the paint tank 4 through a flexible pipe, so that the paint tank 4 can deliver the paint to the coating nozzle 3.

[0023] In this embodiment, a dust suction ring 6 is fixedly installed on the top of the workbench 1. The top of the dust suction ring 6 is provided with multiple dust suction heads to facilitate the suction of the scattered coating powder.

[0024] In this embodiment, a dust collection box 5 is fixedly installed on one side of the workbench 1, and an exhaust fan 8 is fixedly installed on the bottom inner wall of the dust collection box 5. A connecting pipe 7 is fixedly installed on the suction end of the exhaust fan 8, and the other end of the connecting pipe 7 is fixedly connected to the dust collection ring 6.

[0025] In this embodiment, a motor slot is provided inside the workbench 1, and a servo motor 10 is fixedly installed on the inner side of the motor slot. The output shaft of the servo motor 10 is fixedly connected to the chuck housing 9. The servo motor 10 can drive the chuck housing 9 to rotate, thereby driving the piston to rotate.

[0026] In this embodiment, the chuck mechanism includes two driven helical slide blocks 11, an active helical slide block 16, three linkage racks 12, and a transmission gear 17. Three guide grooves are provided on the bottom inner wall of the clamping chamber. Two driven helical slide blocks 11 and an active helical slide block 16 are slidably installed on the inner side of the three guide grooves, respectively. A linkage rack 12 is fixedly installed on one side of each of the two driven helical slide blocks 11 and the active helical slide block 16. A transmission gear 17 is rotatably installed on the bottom inner wall of the clamping chamber. The three linkage racks 12 mesh with the same transmission gear 17.

[0027] In this embodiment, the top of the chuck housing 9 is provided with three sliding grooves, which are connected to the same clamping chamber. Each of the three sliding grooves has a clamp 18 slidably mounted on its inner side. Each of the three clamps 18 has a helical tooth groove at its bottom. Two driven helical tooth sliders 11 and one driven helical tooth slider 16 are respectively adapted to the corresponding helical tooth grooves, so that the corresponding clamps 18 can be moved by the two driven helical tooth sliders 11 and the driven helical tooth slider 16.

[0028] In this embodiment, a fixed metal block 13 is fixedly installed on the bottom inner wall of the clamping chamber. A threaded rod 14 is rotatably installed on one side of the fixed metal block 13. An active helical tooth slider 16 is threaded onto the threaded rod 14. One end of the threaded rod 14 extends out of the chuck housing 9. A rotating head 15 is fixedly installed at the end of the threaded rod 14 extending out of the chuck housing 9. A cross groove is opened at one end of the rotating head 15 to facilitate the rotation of the threaded rod 14.

[0029] Working principle: When spraying the piston, the operator places the piston on the chuck housing 9, and then rotates the rotating head 15 with a screwdriver. The rotation of the rotating head 15 drives the threaded rod 14 to rotate. The threaded rod 14 is threaded with an active helical tooth slider 16, which is slidably installed in the corresponding guide groove. Therefore, the rotation of the threaded rod 14 drives the active helical tooth slider 16 to move axially. The movement of the active helical tooth slider 16 drives the linkage rack 12 to move. The movement of the linkage rack 12 drives the transmission gear 17 to rotate, which in turn drives the other two linkage racks 12 to move. The movement of the two linkage racks 12 drives the corresponding driven helical tooth sliders 11 to move. At this time, the two driven helical tooth sliders 11 and the active helical tooth slider 16 move, driving the corresponding clamps 18 to move and clamp the piston. Then, the servo motor 10 is started, which drives the chuck mechanism to rotate, thereby driving the piston to rotate. The operator controls the robotic arm 2 to move the coating nozzle 3 to directly above the piston and then sprays it. During spraying, the exhaust fan 8 is started, which generates negative pressure. Through the connecting pipe 7, the negative pressure reaches the dust collection ring 6. At this time, the negative pressure sucks up the scattered coating powder through multiple dust collection heads on the surface of the dust collection ring 6, preventing it from being inhaled by the operator, thus increasing the practicality and environmental friendliness of the equipment.

[0030] The technological advancements of this invention compared to existing technologies are as follows: when positioning and clamping the piston, it can prevent it from moving. At the same time, it has strong anti-interference and stability, does not rely on pneumatic, hydraulic or electric systems, avoids clamping failure caused by air pressure fluctuations or oil leaks, and through the dust suction ring 6, it can absorb the coating powder that escapes during spraying, preventing it from escaping into the air and being inhaled by workers, thus increasing the safety and environmental friendliness of the equipment.

Claims

1. A coating spraying device for a piston surface, characterized in that, Includes a workbench (1), on one side of which a robotic arm (2) is fixedly installed, and at one end of the robotic arm (2) a coating nozzle (3) is fixedly installed; A chuck housing (9) is fixedly installed on the top of the worktable (1). A clamping chamber is provided inside the chuck housing (9). A chuck mechanism is provided on the inner side of the clamping chamber. The chuck mechanism is used to clamp the piston.

2. The coating spraying device for a piston surface according to claim 1, characterized in that, A paint tank (4) is fixedly installed on one side of the robotic arm (2), and the coating nozzle (3) is connected to the paint tank (4) through a flexible pipe.

3. The coating spraying device for a piston surface according to claim 1, characterized in that, A dust suction ring (6) is fixedly installed on the top of the workbench (1), and the top of the dust suction ring (6) is provided with multiple dust suction heads.

4. The coating spraying device for a piston surface according to claim 3, characterized in that, A dust collection box (5) is fixedly installed on one side of the workbench (1). An exhaust fan (8) is fixedly installed on the bottom inner wall of the dust collection box (5). A connecting pipe (7) is fixedly installed on the suction end of the exhaust fan (8). The other end of the connecting pipe (7) is fixedly connected to the dust collection ring (6).

5. The coating spraying device for a piston surface according to claim 1, characterized in that, The workbench (1) has a motor slot inside, and a servo motor (10) is fixedly installed on the inner side of the motor slot. The output shaft of the servo motor (10) is fixedly connected to the chuck housing (9).

6. The coating spraying device for a piston surface according to claim 5, characterized in that, The chuck mechanism includes two driven helical slide blocks (11), an active helical slide block (16), three linkage racks (12), and a transmission gear (17). Three guide grooves are provided on the bottom inner wall of the clamping chamber. Two driven helical slide blocks (11) and an active helical slide block (16) are slidably installed on the inner side of the three guide grooves respectively. A linkage rack (12) is fixedly installed on one side of each of the two driven helical slide blocks (11) and the active helical slide block (16). A transmission gear (17) is rotatably installed on the bottom inner wall of the clamping chamber. The three linkage racks (12) mesh with the same transmission gear (17).

7. A coating spraying device for a piston surface according to claim 6, characterized in that, The top of the chuck housing (9) is provided with three sliding grooves, which are connected to the same clamping chamber. Each of the three sliding grooves is slidably mounted with a clamp (18). Each of the three clamps (18) is provided with a helical tooth groove at the bottom. Two driven helical tooth sliders (11) and one active helical tooth slider (16) are respectively adapted to the corresponding helical tooth grooves.

8. The coating spraying device for a piston surface according to claim 7, characterized in that, A fixed metal block (13) is fixedly installed on the bottom inner wall of the clamping chamber. A threaded rod (14) is rotatably installed on one side of the fixed metal block (13). The active helical tooth slider (16) is threaded onto the threaded rod (14). One end of the threaded rod (14) extends out of the chuck housing (9). A rotating head (15) is fixedly installed at one end of the threaded rod (14) extending out of the chuck housing (9). A cross groove is opened at one end of the rotating head (15).

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