Spraying apparatus

Abstract

This invention relates to the field of glass spraying technology, and particularly to a spraying device for spraying a portion of a workpiece to be sprayed. The device comprises: a clamp with an opening for clamping the workpiece and exposing the portion to be sprayed; a spray gun mounted on a robotic arm for spraying the portion; and a ventilation structure with an air extraction port located below the opening. The spraying device provided by this invention can automatically spray the edges of automotive glass and effectively ensures a uniform and consistent finish.

Description

Technical Field

[0001] This invention relates to the field of glass spraying technology, and in particular to a spraying device. Background Technology

[0002] During daily use, automotive window edging, especially the triangular and rear side windows, is prone to scratching against the car doors, severely impacting its lifespan. Therefore, it's typically necessary to apply an additional coating to these areas to form a wear-resistant layer, extending their lifespan. However, current coating processes generally require manual application, which can lead to uneven coating or coating areas exceeding the designated limit. Furthermore, the toxicity of the coating materials can pose serious health risks to workers, potentially causing related illnesses. While existing equipment can address these issues, such as the automated spraying fixture for sound-absorbing coatings on window edging disclosed in patent CN109465136A, its poor coating quality often fails to meet factory requirements. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a spraying device that enables automatic spraying of automotive glass edging and produces a uniform sprayed coating.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a spraying device for spraying the part of a workpiece to be sprayed, having:

[0005] A fixture having an opening for clamping the workpiece and exposing the part to be coated;

[0006] A spray gun, mounted on a robotic arm, is used to spray the area to be coated.

[0007] The ventilation structure has an air intake, which is located below the opening.

[0008] The beneficial effects of this invention are as follows: The spraying equipment provided by this invention utilizes a robotic arm to automate the spraying process, ensuring a uniform and consistent coating while eliminating the need for human intervention and preventing harm to personnel from the paint. Furthermore, the addition of an exhaust system to the spraying equipment effectively removes suspended paint particles from the air and ensures that there are no unpleasant odors from the spraying materials in the workshop air. Attached Figure Description

[0009] Figure 1 The diagram shown is a structural schematic of the spraying equipment according to a specific embodiment of the present invention;

[0010] Figure 2 The image shown is a partial schematic diagram of the spraying equipment according to a specific embodiment of the present invention;

[0011] Figure 3 The diagram shown is another partial schematic of the spraying equipment according to a specific embodiment of the present invention;

[0012] Figure 4 The above is a side sectional view of the clamp in the specific embodiment of the present invention when it is engaging the workpiece;

[0013] Figure 5 The diagram shown is a structural schematic of the robotic arm in a specific embodiment of the present invention;

[0014] Figure 6 The diagram shown is a structural schematic of the clamp according to a specific embodiment of the present invention;

[0015] Figure 7 The image shown is a side sectional view of the spraying equipment according to a specific embodiment of the present invention.

[0016] Labeling Explanation: 1. First quick-change plate; 101. Positioning post; 102. Handle; 2. Workpiece; 201. Part to be sprayed; 202. End face; 203. Glass; 3. Substrate; 4. Second quick-change plate; 5. Clamping structure; 6. Baffle; 7. Upper clamping block; 701. Inclined surface; 702. Abutment block; 8. Side plate; 9. Drive structure; 10. Lower clamping block; 11. Receiving bucket; 12. Robotic arm; 13. Spray gun; 14. Mounting plate; 15. Flange; 16. Spray gun container; 17. Adapter. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] See Figures 1 to 7 As shown, the spraying equipment is used to spray the part 201 to be sprayed on the workpiece 2, and includes: a clamp with an opening for clamping the workpiece 2 and exposing the part 201 to be sprayed; a spray gun 13 mounted on a robotic arm 12 for spraying the part 201 to be sprayed; and a ventilation structure with an air extraction port located below the opening.

[0019] The workpiece 2 specifically refers to glass 203 with an edge. The area to be coated 201 is a pre-set coating area on the edge, generally selected at and / or near a continuous edge of the edge, which can be a flat, curved, or arbitrary shape. The coating thickness formed on the surface of the coating area is preferably 8-9 μm, and the coating position tolerance is ±0.5 mm.

[0020] The workpiece 2 is clamped and positioned by the opening of the fixture, exposing the part 201 to be sprayed 201 at the opening, thus allowing the spray gun 13 to directly spray the surface of the part 201 to be sprayed. The spray gun 13 is connected to a paint supply source, which can be connected by a pipeline. The spray gun 13 is mounted on a robotic arm 12, so it can be moved freely by the robotic arm 12. The choice of robotic arm 12 is arbitrary and can be selected according to the actual spraying needs, such as a three-axis, four-axis, or five-axis system. The exhaust port is located below the opening, thus effectively collecting paint particles that are not attached to the surface of the workpiece 2, preventing paint particles from drifting around in the working environment, adhering to the surface of other equipment, or causing unpleasant odors in the working environment.

[0021] Of course, most preferably, the spraying equipment includes a housing in which the robotic arm 12, the ventilation structure and the exposed part to be sprayed 201 are all located. The entire spraying process is sealed by the housing to further prevent the free diffusion of unattached paint particles.

[0022] In one embodiment, the spray gun 13 can be any existing type, such as the Anast Iwata spray gun 13, which is mounted on the flange 15 of the robotic arm 12 via a mounting plate 14.

[0023] In one embodiment, the paint supply source is a spray gun container 16 containing paint, which is connected to the spray gun 13 via an adapter 17.

[0024] In one embodiment, the fixture includes an upper clamping block 7 and a lower clamping block 10. The opening is defined by the opposing surfaces of the upper clamping block 7 and the lower clamping block 10. The upper clamping block 7 is in contact with the end face 202 of the part to be coated 201, and the lower clamping block 10 is supported at the lower end of the part to be coated 201. In this embodiment, the opposing surfaces of the upper clamping block 7 and the lower clamping block 10 are contoured surfaces, the shape of which is determined by the surface contour of the workpiece 2. The upper clamping block 7 and the lower clamping block 10 form an opening or close the opening when they move relative to each other, allowing the workpiece 2 to be inserted when the opening is formed, and fixing the workpiece 2 when the opening is closed. At the same time, since the opposing surfaces are directly related to the surface contour of the workpiece 2, the workpiece 2 can be positioned to a certain extent during the opening and closing process, thereby ensuring the full exposure of the part to be coated 201 and the shielding of the non-coated part 201, thus ensuring the coating quality. Meanwhile, the lower clamping block 10 is attached to the lower end of the part to be sprayed 201, thus effectively preventing the part to be sprayed 201 from undergoing undesirable deformation and uneven coating due to the pressure of the spray gun 13 during the spraying process.

[0025] To more effectively expose the part 201 to be sprayed and to shield the non-sprayed part 201 corresponding to the part 201 to be sprayed by the upper clamping block 7, the upper clamping block 7 preferably has a slope 701 inclined towards the edge of the end face 202. The slope 701 effectively shields the non-sprayed part 201, that is, it defines the spraying edge of the part 201 to be sprayed, and allows the part 201 to be sprayed in an inclined manner, so as to facilitate the control of the robotic arm 12 and effectively control the uniformity and thickness of the coating formed on the surface of the part 201 to be sprayed.

[0026] In one embodiment, the upper clamping block 7 has an abutment block 702 that abuts against the end face 202. The number of abutment blocks 702 can be selected according to the width of the workpiece 2. The shape of the abutment surface of the abutment block 702 is still defined by the end face 202, that is, it is also a contoured surface, thereby cooperating with the upper clamping block 7 and the lower clamping block 10 to position the workpiece 2. At the same time, the abutment block 702 is designed to abut against the end face 202, rather than the part to be sprayed 201. However, since the end face 202 is close to the part to be sprayed 201, it can further clamp and stabilize the workpiece 2 without damaging the inherent shape of the part to be sprayed 201.

[0027] In one embodiment, the exhaust structure includes a receiving hopper 11 and a fan connected to the receiving hopper 11 via a pipe. The exhaust port is formed within the receiving hopper 11, which is located on the side of the clamp that exposes the part 201 to be sprayed. Preferably, a grille is provided on the receiving hopper 11, and the choice of the grille is arbitrary. In an optional embodiment, the grille consists of multiple parallel bars spaced at intervals.

[0028] In one embodiment, the spraying equipment further includes a first quick-change plate 1, on which positioning posts 101 are provided, the positioning posts 101 receiving the workpiece 2. Normally, the first quick-change plate 1 is placed on a machine base or platform, and the positioning posts 101 thereon have a specific distribution to match a specific workpiece 2. When different workpieces 2 need to be sprayed, the positions of the positioning posts 101 can be changed, or the already installed quick-change plate 1 with a distribution of positioning posts 101 matching the workpiece 2 can be directly replaced. The positioning method between the positioning posts 101 and the workpiece 2 can be any existing method, such as a combination with positioning holes. To achieve quick replacement of the first quick-change plate 1, or to facilitate picking up or placing, it is preferable to provide a handle 102 on the first quick-change plate 1.

[0029] In one embodiment, the spraying equipment further includes a substrate 3, with a second quick-change plate 4 disposed at the lower end of the substrate 3. A driving structure 9 is disposed on the substrate 3, used to drive the substrate 3 to move vertically. The upper clamping block 7 is disposed on the second quick-change plate 4. The function of the second quick-change plate 4 is similar to that of the first quick-change plate 1, namely, to enable quick replacement of the upper clamping block 7 disposed thereon, ensuring the upper clamping block 7 is compatible with the workpiece 2. In an optional embodiment, the upper clamping block 7 is installed onto the second quick-change plate 4 using a conventional assembly method, such as plug-in connection. The driving structure 9 is used to drive the substrate 3 to move vertically, thereby achieving the fixing and release of the workpiece 2 through the second quick-change plate 4. The driving structure 9 can be any existing structure that achieves the aforementioned function, such as a combination of a cylinder and a slider.

[0030] In one embodiment, the clamp is provided with a side plate 8 on the side near the robotic arm 12. The side plate 8 has a through hole in the middle to allow the clamp to be exposed in the opening or the part to be coated 201. However, the size of the through hole is generally larger than the opening of the clamp, and even when the opening is closed, the upper edge of the through hole is higher than the upper edge of the substrate 3, that is, an exposed structure is formed between the substrate 3 and the upper edge of the through hole. This exposed structure can easily allow paint particles to pass through during the coating process and contaminate the environment of the part to be coated 201 of the workpiece 2, or contaminate the non-coated part 201 of the workpiece 2. Therefore, it is preferable to provide a baffle 6 on the substrate 3 to shield the exposed structure.

[0031] Preferably, a clamping structure 5 is provided between the substrate 3 and the second quick-change plate 4. The clamping structure 5 is used for quick clamping or quick release of the substrate 3 and the second quick-change plate 4, that is, to realize the quick replacement of the second quick-change plate 4. In an optional embodiment, the clamping structure 5 is a clamp. The position and number of the clamping structures 5 are selected according to actual needs. If the length of the second quick-change plate 4 is too long, a clamping structure 5 can be provided on each side and in the middle of the length direction of the second quick-change plate 4.

[0032] Example 1

[0033] A spraying device for spraying the part 201 to be sprayed on a workpiece 2, comprising: a clamp having an opening for clamping the workpiece 2 and exposing the part 201 to be sprayed; a spray gun 13 mounted on a robotic arm 12 for spraying the part 201 to be sprayed; a ventilation structure having an air extraction port located below the opening; a first quick-change plate 1; and a substrate 3.

[0034] The clamp includes an upper clamping block 7 and a lower clamping block 10. The opening is defined by the opposing surfaces of the upper clamping block 7 and the lower clamping block 10. The upper clamping block 7 is in contact with the end face 202 near the part to be sprayed 201, and the lower clamping block 10 is supported at the lower end of the part to be sprayed 201.

[0035] The upper clamping block 7 has an inclined surface 701 that is inclined toward the edge of the end face 202;

[0036] The upper clamping block 7 has an abutting block 702, which abuts against the end face 202;

[0037] The exhaust structure includes a receiving hopper 11 and a fan connected to the receiving hopper 11 via a pipeline. The exhaust port is formed inside the receiving hopper 11, and the receiving hopper 11 is located on the side of the fixture that exposes the part 201 to be sprayed.

[0038] The first quick-change plate 1 is provided with a positioning post 101, which supports the workpiece 2;

[0039] The first quick-change plate 1 is provided with a handle 102;

[0040] It also includes a substrate 3, a second quick-change plate 4 is provided at the lower end of the substrate 3, a driving structure 9 is provided on the substrate 3, the driving structure 9 is used to drive the substrate 3 to move vertically, and the upper clamping block 7 is provided on the second quick-change plate 4.

[0041] The baffle 6 is provided on the substrate 3;

[0042] A clamping structure 5 is provided between the substrate 3 and the second quick-change plate 4.

[0043] Specifically, the first quick-change plate 1 and the second quick-change plate 4, which match the workpiece 2, are respectively mounted on the machine base and the base plate 3. Then, the workpiece 2 is placed on the first quick-change plate 1, at which point the part of the workpiece 2 to be coated 201 is placed in the opening of the fixture. The drive structure 9 drives the base plate 3 to move downward, so that the workpiece 2 is clamped by the fixture composed of the upper clamping block 7 and the lower clamping block 10, and the part to be coated 201 is completely exposed in the opening of the fixture. The robotic arm 12 drives the sprayer to spray the part to be coated 201, and the paint particles remaining in the environment are sucked in from the receiving hopper 11.

[0044] In summary, the spraying equipment provided by this invention utilizes a robotic arm to automate the spraying process, ensuring a uniform and consistent coating while eliminating the need for human intervention and preventing harm to personnel from the paint. Furthermore, the addition of an exhaust system to the spraying equipment effectively removes suspended paint particles from the air and ensures that there are no unpleasant odors from the spraying materials in the workshop air.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A spraying device for spraying the part of a workpiece with an edge to be sprayed, characterized in that, have: A fixture having an opening for clamping the workpiece and exposing the part to be coated; A spray gun, mounted on a robotic arm, is used to spray the area to be coated. The ventilation structure has an air intake, which is located below the opening; The robotic arm, the ventilation structure, and the exposed part to be sprayed are all located in the sealed housing, which seals the entire spraying process. The clamp includes an upper clamping block and a lower clamping block. The opening is defined by the opposing surfaces of the upper and lower clamping blocks. The upper clamping block fits against the end face of the part to be coated. The lower clamping block rests on the lower end of the part to be coated. The upper clamping block has an inclined surface that slopes toward the edge of the end face. When the clamp engages the workpiece, the inclined surface is located above the part to be coated. The upper clamping block has an abutting block that abuts against the end face. The part to be coated is a coating area pre-set on the edge. The coating area is a coating surface at and / or close to the continuous edge of the edge.

2. The spraying equipment according to claim 1, characterized in that, The exhaust structure includes a receiving hopper and a fan connected to the receiving hopper via a pipeline. The exhaust port is formed inside the receiving hopper, and the receiving hopper is located on the side of the fixture that exposes the part to be sprayed.

3. The spraying equipment according to claim 1, characterized in that, It also includes a first quick-change plate, on which a positioning post is provided, and the positioning post supports the workpiece.

4. The spraying equipment according to claim 3, characterized in that, A handle is provided on the first quick-change plate.

5. The spraying equipment according to claim 1, characterized in that, It also includes a substrate, a second quick-change plate is provided at the lower end of the substrate, a driving structure is provided on the substrate, the driving structure is used to drive the substrate to move vertically, and the upper clamping block is provided on the second quick-change plate.

6. The spraying equipment according to claim 5, characterized in that, The baffle is provided on the substrate.

7. The spraying equipment according to claim 5, characterized in that, A clamping structure is provided between the substrate and the second quick-change plate.

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