A grounded spray booth for electrostatic powder coating

Abstract

The utility model discloses a grounding type spraying workbench for anti -static powder coating, belong to electrostatic spraying equipment technical field. The workbench includes workbench body, metal frame, conducting table top, grounding assembly and spraying workpiece clamping device. Conducting table top sets up in the top of metal frame, and the whole constitutes conducting structure, and grounding assembly includes the grounding conductive nail of installing in the frame foot bottom and the grounding busbar of being connected with the table top and clamping device, ensures the effective release of static electricity in the spraying process. Clamping device is equipped with rotating support and universal chuck, is used for clamping the metal workpiece of waiting to spray, and constructs the static electricity conduction path. The workbench still sets up the grounding state detection module, is used for judging whether the grounding effect is reliable. The structure has the advantages of grounding closed loop clear, workpiece fixed flexible, high safety, is applicable to the spraying process of various anti -static powder coating.

Description

Technical Field

[0001] This utility model relates to the technical field of electrostatic spraying devices, and in particular to a grounded spraying workbench for antistatic powder coating. Background Technology

[0002] Current electrostatic powder coating technology is widely used in the surface treatment of metal parts. To ensure coating effect and operational safety, it is necessary to ensure that the workpiece, operating platform, and grounding system form a complete electrostatic discharge circuit. However, most current spraying workbenches do not integrate a reliable grounding path, and some structures rely solely on the physical contact between the metal legs and the ground, which cannot ensure stable conduction between the workpiece and the ground wire, easily leading to static electricity accumulation, electric shock risk, or spraying failure. At the same time, traditional spraying platforms have a single workpiece clamping method and lack adjustment functions to adapt to different structural components, resulting in low operating efficiency, poor applicability, and significant room for improvement. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a grounded spraying workbench for antistatic powder coating, which solves the problems of unstable workpiece grounding, ineffective static electricity release, and inconvenient spraying operation.

[0004] The technical solution of this utility model is as follows:

[0005] A grounded spraying workbench for antistatic powder coating includes: a workbench body, a metal frame, a conductive table surface, a grounding assembly, and a workpiece clamping device, wherein:

[0006] A metal frame is set at the lower part of the workbench body to form an overall support structure; a conductive table surface is installed on the top of the metal frame, and is made of conductive metal plate, and makes electrical contact with the metal frame.

[0007] The grounding assembly includes multiple grounding conductive nails and a grounding busbar. The grounding conductive nails are fixed to the ends of multiple support legs at the bottom of the frame to achieve physical grounding connection. The grounding busbar is located on one side of the frame and is connected to the conductive platform and clamping device through wires.

[0008] The workpiece clamping device is installed in the middle of the conductive table and includes a rotating bracket, a universal chuck and a rotating shaft. The chuck is used to clamp the metal workpiece, and the rotating bracket is electrically connected to the table to form an electrostatic conduction path.

[0009] Furthermore,

[0010] The grounding conductive nail includes an elastic conductive needle, a guide post, and a spring limiting mechanism. The conductive needle can extend and contact the ground under the pressure of the spring, adapting to different heights or uneven ground, and ensuring stable grounding.

[0011] The grounding busbar is a copper busbar structure, which is fixed to the side of the frame with bolts. It has multiple ports to facilitate the connection of wires to the conductive platform and the clamping device to form a complete discharge path.

[0012] The clamping device can slide along the guide rail and is equipped with a locking structure. The chuck adopts a ball head + universal connection structure, which, together with the angle adjustment gear mechanism, enables multi-directional adjustment and locks the position with a knob. It is suitable for metal workpieces of different sizes or shapes.

[0013] The chuck has a clamping structure and the clamping arm is elastically adjustable, suitable for clamping parts with a diameter of 10 to 100 mm;

[0014] A limiting groove structure is provided between the rotating bracket and the conductive platform to limit the rotation angle to no more than ±180°. Positioning holes are provided on both sides of the bottom slide rail wheel assembly, which, together with the spring positioning pin, form a stop mechanism.

[0015] The conductive platform surface has an anti-slip raised dot structure to increase contact resistance and prevent slippage;

[0016] The work area is surrounded by a semi-enclosed metal fence and a transparent protective cover. The protective cover has an openable operating port with a flip-top structure, equipped with a hinge and magnetic closure device to prevent dust from spreading and facilitate manual operation.

[0017] The workbench is also equipped with a grounding detection module, including monitoring terminals, a low-current detection circuit and a dual-color LED light, which is used to detect whether the grounding resistance is lower than the safety threshold and to display whether the grounding status is qualified.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This grounded spraying workbench for antistatic powder coating constructs a closed-loop conductive path from workpiece → fixture → conductive table surface → frame → grounding nail → ground, effectively releasing static electricity and eliminating the risk of spraying sparks or electric shock.

[0020] 2. This grounded spraying workbench for antistatic powder coating features an adjustable clamping mechanism to accommodate workpieces of various sizes, and supports angle adjustment and sliding positioning, thereby improving spraying efficiency.

[0021] 3. This grounded spraying workbench for antistatic powder coating improves the safety and monitoring capabilities of the operating environment through a protective cover and grounding detection module. The machine has a high degree of integration and is suitable for deployment in standardized electrostatic spraying production lines. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the spraying workbench of this utility model;

[0023] Figure 2 This is a cross-sectional view showing the structure and installation of the grounding conductive nail.

[0024] Figure 3 This is a schematic diagram of the spraying clamping device and the sliding structure of the guide rail;

[0025] Figure 4 This is a schematic diagram of the connection structure between the grounding bus and the conductive path;

[0026] Figure 5 This is a structural diagram of the spray painting enclosure and protective cover assembly;

[0027] Figure 6 This is a diagram showing the structure of the grounding detection module and the grounding judgment logic.

[0028] Figure 7 Enlarged view of the universal chuck and angle adjustment locking structure;

[0029] Figure 8 This is a schematic diagram of the closed-loop path structure for electrostatic discharge.

[0030] In the diagram: 1. Workbench body; 2. Metal frame; 3. Conductive surface; 31. Anti-slip protrusions; 4. Grounding assembly; 41. Grounding conductive nail; 42. Grounding busbar; 5. Workpiece clamping device; 51. Rotating bracket; 52. Universal chuck; 53. Rotating shaft; 54. Slide rail wheel assembly; 55. Positioning pin; 6. Protective cover assembly; 61. Transparent protective cover; 62. Openable operating port; 7. Grounding detection module. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please refer to Figures 1 to 8 As shown:

[0033] This utility model includes a workbench body 1, a metal frame 2, a conductive table surface 3, a grounding component 4, a sprayed workpiece clamping device 5, a protective cover component 6, and a ground wire detection module 7.

[0034] The metal frame 2 is installed at the bottom of the workbench body 1, serving as the overall supporting foundation structure. The conductive platform 3 is an aluminum alloy plate, laid on top of the metal frame, and connected at the four corners by bolts to ensure structural stability and form a good conductive path.

[0035] The grounding assembly 4 includes multiple grounding conductive pins 41 and a grounding busbar 42. Each grounding conductive pin 41 is located at the end of each leg of the metal frame 2, and its structure is as follows: Figure 2 As shown, it includes an elastic conductive pin, a guide post, and a compression spring. The conductive pin can automatically extend and press against the ground under the action of the spring force to adapt to uneven ground. A limit ring prevents overextension or loosening. The grounding busbar 42 is a copper busbar, fixed to the side plate of the frame, and connected to the conductor terminals on the conductive platform 3 and the clamping device 5 through multi-point screw ports. The conductor is a soft copper braided wire, which is fixed with a nut using a wire clamping terminal and coated with conductive paste to enhance the contact effect.

[0036] The workpiece clamping device 5 is installed in the middle area of ​​the conductive platform 3, and its structure is as follows: Figure 3 and Figure 7 As shown, the device includes a rotating bracket 51, a universal chuck 52, and a rotating shaft 53. The rotating shaft 53 passes through the bottom of the bracket and inserts into the central hole of the table surface, and is provided with a limiting groove to limit the rotation angle range within ±180°. The chuck 52 adopts a ball-and-socket connection structure, which can adjust the angle in multiple directions. It has an internal gear locking mechanism, and the chuck angle is controlled and locked by a side knob. The chuck has a flexible clamping structure, which is suitable for clamping workpieces with a diameter of 10-100mm, and forms a conductive contact after clamping. The bottom of the clamping device is also provided with a slide rail wheel set 54, which can slide in the slide grooves arranged on both sides of the conductive table surface 3. With the help of spring positioning pins inserted into positioning holes, it can move back and forth and lock.

[0037] The conductive platform 3 has several anti-slip protrusions 31 on its surface, which are used to increase the contact area of ​​the workpiece, enhance friction, prevent slippage, and further improve the conductivity stability.

[0038] like Figure 5 As shown, a metal enclosure 6 is installed around the conductive platform, and a transparent protective cover 61 is provided on the upper part of the enclosure. The front of the protective cover has an openable operating port 62 with a flip-top structure. The top is equipped with a pivot hinge, and the bottom is closed by a magnetic strip. It can be flipped up for manual operation during spraying and automatically closes after use to prevent dust leakage.

[0039] The workbench body 1 is equipped with a ground wire detection module 7, such as Figure 6 As shown, the module includes a grounding monitoring terminal, a low-current detection circuit, and a dual-color LED indicator. One end of the module connects to the grounding busbar, and the other end connects to the edge of the tabletop. The detection circuit monitors the grounding resistance in real time. If the resistance is less than 10Ω, the LED remains constantly green; if it exceeds the safety threshold, the light turns red as an alarm, indicating a poor grounding. The module is powered by 5V DC and is simple in structure and easy to use.

[0040] like Figure 8 As shown, the workbench is constructed with the following electrostatic discharge path:

[0041] Metal workpiece → universal chuck 52 → rotating bracket 51 → conductive table 3 → metal frame 2 → grounding conductive nail 41 → ground, forming a complete closed-loop electrostatic discharge path, effectively releasing static charge and preventing the accumulation of static electricity during the spraying process from causing safety risks.

[0042] In summary, this utility model has a clear structure and well-defined connections. The functional components cooperate with each other and are connected in a closed loop, solving the problems of unstable grounding, limited workpiece clamping, and unsafe operation of existing spraying platforms. It has good practicality and scalability.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grounded spraying workbench for antistatic powder coating, characterized in that, include: The workbench body (1), metal frame (2), conductive table surface (3), grounding assembly (4), and workpiece clamping device (5) are included. in: The metal frame (2) is disposed at the lower part of the workbench body (1) to form a support structure; The conductive platform (3) is installed above the metal frame (2), is made entirely of metal material, and forms a conductive contact with the metal frame (2); The grounding assembly (4) includes multiple grounding conductive nails (41) and a grounding busbar (42). The grounding conductive nails (41) are respectively installed at the bottom of multiple legs of the metal frame (2) to form a physical grounding connection with the ground. The grounding busbar (42) is fixed to one side of the metal frame (2) and connected to the conductive platform (3) and the spraying workpiece clamping device (5) through wires to realize overall static electricity discharge. The sprayed workpiece clamping device (5) is located above the conductive platform (3), and can clamp the metal workpiece and form an electrical connection with the grounding component (4) to construct a closed loop for electrostatic discharge.

2. The grounded spraying workbench for antistatic powder coating as described in claim 1, characterized in that, The grounding conductive nail (41) is an elastic telescopic structure, including an elastic contact pin and a limiting base, to ensure reliable grounding contact under different ground conditions.

3. The grounded spraying workbench for antistatic powder coating as described in claim 1, characterized in that, The grounding busbar (42) adopts a copper busbar structure and is fixed to the side of the metal frame (2) by bolt fastening, and is provided with multiple independent grounding ports.

4. The grounded spraying workbench for antistatic powder coating as described in claim 1, characterized in that, The workpiece clamping device (5) includes a rotating bracket (51) and a multi-angle universal chuck (52). The rotating bracket (51) is fixedly connected to the conductive platform (3) through a central rotating shaft (53). The chuck (52) is electrically connected to the rotating bracket (51) and is used to clamp the workpiece to be sprayed.

5. A grounded spraying workbench for antistatic powder coating as described in claim 4, characterized in that, The rotating bracket (51) is provided with a slide rail wheel assembly (54) at the lower part. The slide rail wheel assembly (54) is installed on the conductive platform (3) to form a guide rail fit, which is used to move the sprayed workpiece clamping device (5) in the front and back direction and fix the working position by the positioning locking part (55).

6. The grounded spraying workbench for antistatic powder coating as described in claim 1, characterized in that, The conductive platform (3) has an anti-slip protrusion structure (31) on its surface to prevent the workpiece from sliding during spraying and to increase the contact area with the workpiece, thereby enhancing the conductivity.

7. A grounded spraying workbench for antistatic powder coating as described in claim 1, characterized in that, The conductive platform (3) is surrounded by a semi-enclosed metal enclosure (6), which is fixedly installed on the edge of the conductive platform to limit the powder diffusion area.

8. A grounded spraying workbench for antistatic powder coating as described in claim 7, characterized in that, The metal enclosure (6) is equipped with a transparent protective cover (61) on top. The protective cover (61) is provided with an openable operating port (62) for spraying operators to perform spray gun operations.

9. A grounded spraying workbench for antistatic powder coating as described in claim 1, characterized in that, The workbench body (1) is equipped with a ground wire indicator port and a grounding status detection light to display the grounding status in real time and ensure that the electrostatic grounding is effective.

Images