Self-adaptive angle spraying powder spray gun and using method

Abstract

The invention relates to a self-adaptive angle spraying powder spray gun and a using method thereof in the technical field of powder coating spraying, the self-adaptive angle spraying powder spray gun comprises a gun body main body and a gun head main body detachably arranged on the gun body main body, and the gun body main body and the gun head main body are connected through a self-adaptive angle adjusting mechanism; and the gun head main body can swing around the gun body main body through the self-adaptive angle adjusting mechanism. The gun head main body and the gun body main body are independently designed, and the angle of the gun head main body is adjustable through the self-adaptive angle adjusting mechanism, so that the working efficiency and the spraying quality of complex workpiece spraying are improved, and low consumption and cost reduction are realized; the powder pipe is externally designed, so that the maintenance convenience of equipment is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of powder coating spraying, and particularly relates to an angle - adaptable spraying powder gun and a using method thereof. Background Art

[0002] With the rapid development of industries such as new energy vehicles, smart homes, and construction, the market demand for powder spraying has been steadily increasing. Powder coating spraying with extremely low VOC emissions has more obvious advantages in terms of environmental protection performance compared with traditional solvent - based coating spraying. Moreover, the recovery rate of the coating in powder spraying can generally reach more than 95%.

[0003] On the other hand, with the popularization of automated equipment, the fields where powder spraying is applied are becoming wider and wider, and the complexity of the workpieces to be coated is getting higher and higher. When powder spraying complex workpieces, affected by the Faraday cage effect and the leveling effect of the powder coating, etc., the film uniformity is relatively poor. To ensure that the overall film thickness of the workpiece meets the requirements, the film thickness at the raised and edge parts of the workpiece will be relatively thick. This will have a negative impact on the spraying quality of the workpiece to be coated and the utilization rate of the coating. To solve the above problems, it is necessary to continuously optimize and adjust the spraying process, and the spraying angle is a very important influencing factor.

[0004] For the currently used powder guns, the relative position between the gun head and the gun body cannot be changed, which makes it difficult to adjust the gun head angle of the powder gun when spraying complex parts, and has a greater impact on the spraying effect and spraying efficiency.

[0005] Since the powder coating directly contacts and rubs against the powder flow channel of the powder gun, the components serving as the powder flow channel in the powder gun become consumable parts. Currently, the components serving as the powder flow channel parts in the mainstream powder guns are all inside the powder gun, and the disassembly and replacement are relatively complex, bringing many difficulties to the maintenance of the equipment. Summary of the Invention

[0006] The purpose of this application is to provide an angle - adaptable spraying powder gun and a using method thereof, to solve the problem of adjustable gun head angle of the powder gun, improve the working efficiency and spraying quality of spraying complex workpieces, and achieve low - consumption and cost reduction. By externalizing the powder flow channel components, the maintenance convenience of the equipment is improved and the maintenance cost is reduced.

[0007] To achieve the above purpose, the present invention provides an angle - adaptable spraying powder gun, including a gun body main body and a gun head main body detachably arranged on the gun body main body. The gun body main body and the gun head main body are connected by an adaptive angle adjustment mechanism, and the gun head main body can swing around the gun body main body through the adaptive angle adjustment mechanism; The adaptive angle adjustment mechanism includes a synchronous motor and an insulating gear. The insulating gear is rotatably connected to the inside of the gun body through a bearing. One side of the gun head body has a rotating shaft, which is fixed to the insulating gear, and the rotating shaft is coaxial with the axis of the insulating gear. The synchronous motor is connected to the insulating gear through a synchronous belt, and the synchronous motor can drive the insulating gear to rotate through the synchronous belt, so that the gun head body swings around the gun body.

[0008] In order to place the powder tube outside and facilitate the disassembly, assembly and maintenance of the gun head body, in a preferred embodiment of the present invention, the gun head body includes a powder tube, a gun head, a powder nozzle and a powder tube joint. One side of the gun head is fixed to the insulating gear through a rotating shaft. An electrode needle is fixed inside the gun head, and a first powder channel is provided inside the gun head. The powder tube is fixed to one end of the gun head, and a second powder channel communicating with the first powder channel is provided inside the powder tube. The powder tube joint is fixed to one end of the powder tube, and a third powder channel communicating with the second powder channel is provided inside the powder tube joint. The powder nozzle is detachably connected to the other end of the gun head through a nozzle lock nut, and the powder nozzle communicates with the first powder channel.

[0009] In order to facilitate the disassembly, assembly and maintenance of the gun body, in a preferred embodiment of the present invention, the gun body includes a gun outer cover, an electrostatic generator and a high-voltage electrostatic path. The electrostatic generator is fixed inside the gun outer cover. One end of the electrostatic generator is provided with an electrostatic generator power supply and a control line inlet, and the other end of the electrostatic generator is connected to the electrode needle inside the powder nozzle through the high-voltage electrostatic path.

[0010] In order to make the structure of the cooperation between the gun head body and the gun body more compact, one end of the gun outer cover has a notch, and the gun head is arranged in the notch.

[0011] In order to limit the rotation range of the gun head body, the maximum rotation angle of the gun head body is 180 degrees.

[0012] In order to prevent the accumulation of powder coating at the end of the electrode needle, a blowing joint is arranged outside the powder tube, and the blowing joint communicates with the electrode needle.

[0013] The present invention also provides a method for using the above-mentioned powder spray gun with an adaptive angle spraying function, including the following steps: when the powder coating enters the powder tube through the joint, the powder coating enters the gun head along the channel. The electrostatic generator obtains the corresponding power supply and control signal through the electrostatic generator power supply and the control line inlet, and outputs the corresponding electrostatic high voltage through the high-voltage electrostatic path, so that the electrode needle inside the gun head realizes the final corona discharge, charges and energizes the passing powder coating, and the blowing joint purges the end of the electrode needle; when it is necessary to adjust the angle of the powder nozzle, the synchronous motor realizes the adaptive angle rotation of the powder nozzle through the synchronous belt.

[0014] In summary, the present invention has the following beneficial effects: The present invention independently designs the gun head main body and the gun body main body, and enables the angle of the gun head main body to be adjustable through the adaptive angle adjustment mechanism, improving the working efficiency and spraying quality of spraying complex workpieces, and achieving low consumption and cost reduction; The present invention externally designs the powder tube, improving the maintenance convenience of the equipment and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of the powder spray gun with adaptive angle spraying of the present invention; Figure 2 is a cross-sectional view of the powder spray gun with adaptive angle spraying of the present invention; Figure 3 is a schematic diagram of the movement range structure of the gun head main body of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following elaborates on the preferred embodiments of the present invention in detail with reference to the drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0017] As Figure 1 shown, a powder spray gun with adaptive angle spraying includes a gun body main body 4 and a gun head main body detachably arranged on the gun body main body 4. The gun body main body 4 and the gun head main body are connected by an adaptive angle adjustment mechanism, and the gun head main body can swing around the gun body main body 4 through the adaptive angle adjustment mechanism.

[0018] Specifically, as shown in Figure 2 the figure, the adaptive angle adjustment mechanism includes a synchronous motor and an insulating gear 8. The insulating gear 8 is rotatably connected to the top end inside the gun body main body 4 through a bearing 10, and the synchronous motor is connected to the insulating gear 8 through a synchronous belt; Specifically, the gun head main body includes a powder tube 5, a gun head 3, a powder nozzle 1 and a powder tube joint 7. One side of the gun head 3 is fixed to the insulating gear 8 through a rotating shaft, and the rotating shaft is coaxial with the axis of the insulating gear 8. An electrode needle g is fixed inside the gun head 3. A first powder channel c in an L shape is provided inside the gun head 3. The powder tube 5 is fixed to one end (bottom end) of the gun head 3 through a screw made of insulating material, and the powder tube 5 is attached to the outer wall of the gun body main body 4 with a certain gap. A second powder channel h communicating with the first powder channel c is provided inside the powder tube 5. The powder tube joint 7 is fixed to one end (bottom end) of the powder tube 5. A third powder channel j communicating with the second powder channel h is provided inside the powder tube joint 7. The powder nozzle 1 is detachably connected to the other end (top end) of the gun head 3 through a nozzle lock nut 2, and the powder nozzle 1 communicates with the first powder channel c. In addition, a blowing joint 6 is provided outside the powder tube 5, and the blowing joint 6 communicates with the electrode needle g.

[0019] Specifically, the gun body main body 4 includes a gun outer cover 9, an electrostatic generator e, and a high-voltage electrostatic path d. The electrostatic generator e is fixed to the inner wall of the gun outer cover 9. One end (bottom end) of the electrostatic generator e is provided with an electrostatic generator power supply and a control line inlet f. The other end (top end) of the electrostatic generator e is connected to an electrode needle g in the gun head 3 through the high-voltage electrostatic path d. One end (top end) of the gun outer cover 9 has a notch, and the gun head 3 is arranged in the notch. The notch can guide and limit the movement range of the gun head 3.

[0020] The usage method of the above powder spray gun that can adaptively adjust the angle includes the following steps: The powder coating enters the second powder channel h of the powder tube 5 through the third powder channel j in the powder tube joint 7. The powder coating enters the first powder channel c in the gun head 3 along the second powder channel h. The electrostatic generator e in the gun outer cover 9 obtains the corresponding power supply and control signal through the electrostatic generator power supply and the control line inlet f, and outputs the corresponding electrostatic high voltage through the high-voltage electrostatic path d, so that the electrode needle g in the gun head 3 realizes the final corona discharge, charges the passing powder coating, and the air blowing joint 6 purges the end of the electrode needle g. The charged powder coating is sprayed out from the powder nozzle 1; when it is necessary to adjust the angle of the powder nozzle 1, the synchronous motor drives the insulating gear 8 to rotate through the synchronous belt, and the insulating gear drives the gun head 3 and the powder nozzle 1 to swing correspondingly. The swing range of the gun head 3 is from the left limit position a to the right limit position b, with a maximum adjustable range of 180°, as Figure 3 shown, to achieve the purpose of spraying with adaptive angle change.

[0021] It should be noted that in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "setting", "provided with", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, principle and application direction of this application should be covered within the protection scope of this application.

Claims

1. An adaptive angle spray powder spray gun, comprising a gun body and a gun head body detachably arranged on the gun body, characterized in that: The gun body main body and the gun head main body are connected by an adaptive angle adjustment mechanism, and the gun head main body can swing around the gun body main body through the adaptive angle adjustment mechanism; The adaptive angle adjustment mechanism includes a synchronous motor and an insulating gear, wherein the insulating gear is rotatably connected to the gun body through a bearing, and one side of the gun head body has a rotating shaft, wherein the rotating shaft is fixed to the insulating gear, and the rotating shaft is coaxial with the axis of the insulating gear, and the synchronous motor is connected to the insulating gear through a synchronous belt, and the synchronous motor can drive the insulating gear to rotate through the synchronous belt, thereby causing the gun head body to swing around the gun body.

2. The adaptive angle spraying powder spray gun according to claim 1, characterized in that: The gun head body includes a powder tube, a gun head, a powder nozzle and a powder tube joint. One side of the gun head is fixed to an insulating gear through a rotating shaft. An electrode needle is fixed in the gun head. A first powder channel is provided in the gun head. The powder tube is fixed to one end of the gun head. The powder tube has a second powder channel connected to the first powder channel. The powder tube joint is fixed to one end of the powder tube. The powder tube joint has a third powder channel connected to the second powder channel. The powder nozzle is detachably connected to the other end of the gun head through a nozzle lock nut. The powder nozzle is connected to the first powder channel.

3. The adaptive angle spraying powder spray gun according to claim 2, characterized in that: The gun body includes a gun body cover, an electrostatic generator and a high-voltage electrostatic path. The electrostatic generator is fixed in the gun body cover. One end of the electrostatic generator is provided with an electrostatic generator power supply and a control line inlet. The other end of the electrostatic generator is connected to the electrode needle in the powder nozzle through the high-voltage electrostatic path.

4. The self-adaptive angle spraying powder spray gun according to claim 3, characterized in that: One end of the outer cover of the gun body is provided with a notch, and the gun head is arranged in the notch.

5. The self-adaptive angle spraying powder spray gun according to claim 4, characterized in that: The maximum rotation angle of the gun head body is 180 degrees.

6. The adaptive angle spraying powder spray gun according to claim 2, characterized in that: An air blowing joint is arranged outside the powder tube, and the air blowing joint is communicated with the electrode needle.

7. A method for using a powder spray gun capable of adaptive angle spraying according to any one of claims 1 to 6, characterized in that: The invention comprises the following steps: when the powder coating enters the powder tube through the joint, the powder coating enters the gun head along the channel, the electrostatic generator obtains the corresponding power supply and control signal through the power supply and control line inlet of the electrostatic generator, and outputs the corresponding electrostatic high voltage through the high-voltage electrostatic path, so that the electrode needle in the gun head realizes the final corona discharge, charges the passing powder coating with electricity, and the air blowing joint purges the end of the electrode needle; when the angle of the powder nozzle needs to be adjusted, the synchronous motor realizes the adaptive angle rotation of the powder nozzle through the synchronous belt.

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