A support tool for large spray painted workpieces

Abstract

The utility model relates to supporting tool technical field, especially large -scale spraying work piece's supporting tool of supporting tool technology field, modularization support system, including modularization support system, be assembled from a plurality of base through splicing structure, support subassembly is detachably fixed on the base surface through the mounting frame of bottom, support subassembly includes: electric telescopic handle, its fixed end is connected with mounting frame, telescopic end fixedly connects vacuum chuck, silica gel pad covers the adsorption surface of vacuum chuck, the utility model discloses through the T -shaped block and T -shaped groove mortise structure and thread hole fastening of base, can quickly assemble or disassemble support platform, adapts to different size and shape large -scale work piece, significantly improves the versatility of tooling, and support subassembly is detachably fixed on the base through mounting frame and bolt, can flexibly select the number and position of support point according to work piece support demand, reduces the interference to spraying operation while guaranteeing the stability of support.

Description

Technical Field

[0001] This utility model relates to the field of support tooling technology, and in particular to a support tooling for large spray-painted workpieces. Background Technology

[0002] Support fixtures for large spray-painted workpieces are devices specifically designed to support and fix large workpieces during spray-painting operations. Their core function is to ensure that the workpiece maintains a stable posture during the spray-painting process, thereby facilitating the spray-painting operation. In the existing technology, it is not convenient to directly support and fix large workpieces using fasteners, such as car doors, engine hoods, aircraft wings, large ship hull sections, and wind turbine blades.

[0003] Traditional support fixtures often employ fixed or welded structures, making it difficult to quickly adjust the size and shape of the support platform according to workpiece specifications. For large workpieces of varying sizes and shapes, custom-made fixtures are often required, resulting in poor versatility, high costs, and cumbersome assembly and disassembly processes, severely impacting production efficiency. Furthermore, the fixed support point positions of traditional fixtures can obstruct the spray gun when the spraying area involves these points, creating blind spots and preventing even coating of certain areas. This necessitates subsequent touch-ups, reducing production efficiency and increasing costs. In addition, the dense arrangement of support points to ensure stability can further interfere with the spraying process. Utility Model Content

[0004] The purpose of this invention is to provide a support fixture for large spray-painted workpieces, which solves the problem in the prior art that it is inconvenient to fix large workpieces and that the existence of fixing points makes it inconvenient to carry out spray-painting operations.

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

[0006] A support fixture for large spray-painted workpieces, a modular support system, comprising:

[0007] The modular support system is assembled from multiple bases through a splicing structure.

[0008] A support assembly, detachably fixed to the surface of the base via a mounting bracket at the bottom, the support assembly comprising:

[0009] An electric telescopic rod, the fixed end of which is connected to the mounting frame, and the telescopic end is fixedly connected to a vacuum suction cup;

[0010] A silicone pad covers the adsorption surface of the vacuum suction cup;

[0011] The support assembly also includes a vacuum system, which comprises:

[0012] A vacuum pump is fixedly mounted on the mounting bracket.

[0013] The hose has one end connected to the suction end of the vacuum pump and the other end sealed to the air inlet of the vacuum suction cup.

[0014] The horizontal adjustment components are located on the surface of the base near the four corners.

[0015] Preferably, both the vacuum pump and the electric telescopic rod are fixedly connected to the mounting frame, and bolts are provided on the surface of the mounting frame.

[0016] Preferably, the base has T-shaped blocks and T-shaped grooves on its two adjacent sides, and the mating surfaces of the T-shaped blocks and T-shaped grooves are provided with threaded holes.

[0017] Preferably, the support assembly further includes two symmetrically arranged telescopic sleeves and a fixing rod. One end of the fixing rod is welded to the vacuum suction cup, and the other end passes through the telescopic sleeve. The top end of the telescopic sleeve is fixed to the mounting frame.

[0018] Preferably, the leveling assembly includes a screw threadedly connected to the base, with a pad rotatably connected to the bottom end of the screw and an operating handle at the top.

[0019] Preferably, the hose is equipped with a pressure sensor and a flow regulating valve. The pressure sensor is used to monitor the pressure inside the hose in real time, and the flow regulating valve is used to adjust the air flow rate of the vacuum pump to the vacuum suction cup according to the pressure data monitored by the pressure sensor, so as to ensure that the suction force of the vacuum suction cup on the workpiece is stable.

[0020] Preferably, the vacuum pump is equipped with an intelligent control system, which is connected to the electric telescopic rod and the pressure sensor via signal connection.

[0021] Preferably, the system also includes a central control system, which is connected to all electric telescopic rods and vacuum pumps. When information is received that the workpiece has been sprayed onto a certain support component, the central control system first controls the vacuum pump of that support component to stop working, releasing the vacuum suction cup from the workpiece. Then, it controls the electric telescopic rod of that support component to descend, exposing the support position for spraying. After spraying at that position is completed, the central control system controls the electric telescopic rod to rise back to its original position, and then restarts the vacuum pump to allow the vacuum suction cup to re-adhere to the workpiece.

[0022] Preferably, the central control system has a preset spraying path planning program, which can plan the lifting sequence and time nodes of each support component in advance according to the shape, size and spraying requirements of the workpiece, so as to achieve precise synchronization between support position adjustment and spraying operation.

[0023] This utility model has at least the following beneficial effects:

[0024] The support platform can be quickly assembled or disassembled by fastening the T-shaped blocks and T-slot mortise and tenon structure and threaded holes of the base. It can adapt to large workpieces of different sizes and shapes, significantly improving the versatility of the tooling. The support components are detachably fixed to the base by the mounting bracket and bolts. The number and position of support points can be flexibly selected according to the support requirements of the workpiece, ensuring support stability while reducing interference with the spraying operation.

[0025] The vacuum suction cup, combined with the silicone pad, can firmly adsorb the workpiece and closely fit curved or uneven surfaces, avoiding scratches on the workpiece surface and preventing slippage during adsorption. The vacuum suction cup fixation method achieves the support effect, avoiding damage to the workpiece caused by traditional clamping fixtures, and is suitable for spraying large workpieces. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the T-shaped block structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the mounting bracket structure of this utility model.

[0031] In the diagram: 1. Base; 101. T-slot; 102. T-block; 2. Adjustment assembly; 201. Screw; 202. Pad; 3. Mounting bracket; 31. Bolt; 4. Horizontal support assembly; 401. Electric telescopic rod; 402. Telescopic sleeve; 403. Fixing rod; 404. Vacuum suction cup; 405. Silicone pad; 406. Hose; 407. Vacuum pump. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0036] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Reference Figure 1-4 A support fixture for large spray-painted workpieces includes a modular support system, which is assembled from multiple bases 1 through a splicing structure, and the support layout can be flexibly adjusted according to the size and shape of the large spray-painted workpieces.

[0038] Support component 4 is detachably fixed to the surface of base 1 via mounting bracket 3 at the bottom. The number of support components 4 is appropriately used based on the location of the workpiece, such as reducing the number of support components 4 according to the actual location of the workpiece, while ensuring that the support system formed by base 1 still maintains good performance. Support component 4 includes:

[0039] The electric telescopic rod 401 has its fixed end connected to the mounting bracket 3 and its telescopic end fixed to the vacuum suction cup 404. The electric telescopic rod 401 can extend and retract up and down, driving the vacuum suction cup 404 to move closer to or away from the workpiece. The electric telescopic rod 401 adopts an industrial-grade electric push rod, driven by a servo motor, with a positioning accuracy of ±1mm.

[0040] Silicone pad 405 covers the adsorption surface of vacuum suction cup 404. Its excellent deformation capability allows it to conform well to the curvature of large workpiece surfaces, while increasing the contact area and friction with the workpiece. Silicone pad 405 is fixed to the adsorption surface of vacuum suction cup 404 using adhesive backing or a nested slot method. Silicone pad 405 is 5-10mm thick and has high elasticity with a Shore hardness of 30-50, enabling it to closely conform to the curved or uneven surfaces of large workpieces, while increasing the coefficient of friction with the workpiece to over 0.8, preventing the workpiece from slipping during adsorption.

[0041] Support component 4 also includes a vacuum system, which includes:

[0042] Vacuum pump 407 is fixedly installed on mounting bracket 3. Vacuum pump 407 is a rotary vane vacuum pump, such as the RV series.

[0043] The hose 406 has one end connected to the suction end of the vacuum pump 407 and the other end sealed to the air inlet of the vacuum suction cup 404. The vacuum pump 407 draws air from the vacuum suction cup 404 through the hose 406, causing the vacuum suction cup 404 to generate an adsorption force, thereby fixing the workpiece. The hose 406 is made of negative pressure resistant polyurethane material and has an inner diameter of 15-20mm.

[0044] The horizontal adjustment component 2 is located on the surface of the base 1 near the four corners and can adjust the level of the support fixture.

[0045] The modular design gives the support fixture excellent versatility and scalability, adapting to large spray-painted workpieces of different sizes. The detachable support assembly 4 facilitates maintenance and parts replacement, reducing operating costs. The combination of the electric telescopic rod 401 and the vacuum suction cup 404 stably secures the workpiece, while the silicone pad 405 protects the workpiece surface from scratches and adapts well to the curved surfaces of large workpieces. The leveling adjustment assembly 2 ensures the support fixture is level, improving its stability.

[0046] Furthermore, both the vacuum pump 407 and the electric telescopic rod 401 are fixedly connected to the mounting frame 3. The surface of the mounting frame 3 is provided with bolts 31, which are used to fix the mounting frame 3 to the base 1. Thus, the number of support components 4 can be freely selected in the modular support system.

[0047] Integrating the vacuum pump 407 and the electric telescopic rod 401 onto the mounting bracket 3 makes the support assembly 4 more compact, facilitating installation and management. The suction force provided by the vacuum pump 407 reliably secures large workpieces to be coated, preventing movement during coating and ensuring coating quality.

[0048] Furthermore, T-shaped blocks and T-shaped grooves are respectively provided on the two adjacent sides of the base 1, and threaded holes are provided on the mating surfaces of the T-shaped blocks and T-shaped grooves. The T-shaped blocks and T-shaped grooves can be mated together to splice multiple bases 1 together. Screws are installed in the threaded holes of the mating surfaces to firmly connect adjacent bases 1.

[0049] The T-block and T-slot splicing structure is simple and robust, allowing for quick assembly and disassembly of the support fixture. Screw connections enhance the stability of the splicing, enabling the entire support system to withstand the weight of large painted workpieces and facilitating easy adjustment of the size and shape of the support fixture as needed.

[0050] Furthermore, the support assembly 4 also includes two symmetrically arranged telescopic sleeves 402 and a fixing rod 403. One end of the fixing rod 403 is welded to the vacuum suction cup 404, and the other end passes through the telescopic sleeve 402. The top end of the telescopic sleeve 402 is fixed to the mounting bracket 3. When the electric telescopic rod 401 extends or retracts, the fixing rod 403 moves up and down together with the vacuum suction cup 404. The telescopic sleeve 402 guides and supports the fixing rod 403, ensuring the stability of the movement trajectory of the vacuum suction cup 404. The telescopic sleeve 402 is composed of two stainless steel round tubes that are interlocked.

[0051] The guide structure composed of the telescopic sleeve 402 and the fixed rod 403 can improve the stability and accuracy of the movement of the vacuum chuck 404, prevent the vacuum chuck 404 from shaking or shifting during the movement, thereby ensuring that the vacuum chuck 404 can accurately adhere to the surface of the workpiece, improving the adsorption effect and the reliability of the support.

[0052] Furthermore, the leveling assembly 2 includes a screw 201 threadedly connected to the base 1, a pad 202 rotatably connected to the bottom end of the screw 201, and an operating handle at the top end. By rotating the operating handle at the top end of the screw 201, the screw 201 can be threadedly rotated on the base 1, thereby adjusting the levelness of the support fixture.

[0053] The leveling component 2 can easily adjust the levelness of the support fixture to adapt to different working surfaces. Even on uneven surfaces, the support fixture can be kept level by adjusting the screw 201, ensuring stable support for large spray-painted workpieces and improving the accuracy and quality of spraying.

[0054] Furthermore, a pressure sensor and a flow regulating valve are installed on the hose 406. The pressure sensor monitors the pressure inside the hose 406 in real time, and the flow regulating valve adjusts the air flow rate of the vacuum pump 407 to the vacuum suction cup 404 based on the pressure data monitored by the pressure sensor to ensure the stable suction force of the vacuum suction cup 404 on the workpiece. The pressure sensor monitors the pressure inside the hose 406 in real time. When the pressure changes, the flow regulating valve automatically adjusts the air flow rate of the vacuum pump 407 based on the data fed back by the pressure sensor. If the pressure is too high, the flow regulating valve reduces the air flow rate; if the pressure is too low, the flow regulating valve increases the air flow rate to maintain the pressure stability inside the vacuum suction cup 404. The pressure sensor on the hose 406 is a high-precision strain gauge sensor with an accuracy class of 0.1%FS, which monitors the pressure value inside the vacuum suction cup 404 in real time. The flow regulating valve is an electric proportional regulating valve that automatically adjusts the opening degree based on the feedback signal from the pressure sensor through a PID control algorithm to stabilize the vacuum degree within a preset range of -0.08MPa to -0.1MPa. This closed-loop control ensures constant adsorption force. Even if there is a slight leak on the workpiece surface, stable adsorption can be maintained through dynamic adjustment. The pressure sensor uses a high-precision strain gauge sensor, such as MEASMS5837.

[0055] The pressure sensor and flow control valve automatically adjust the pumping flow rate of the vacuum pump 407, ensuring a stable suction force of the vacuum suction cup 404 on the workpiece. This prevents the workpiece from falling off due to insufficient suction force or damaging the workpiece surface due to excessive suction force, thus improving the safety and reliability of the support fixture.

[0056] Furthermore, the vacuum pump 407 is equipped with an intelligent control system, which is connected to the electric telescopic rod 401 and the pressure sensor. When the electric telescopic rod 401 rises, bringing the vacuum suction cup 404 closer to the workpiece, the intelligent control system receives a signal and starts the vacuum pump 407. The pressure sensor monitors the pressure inside the vacuum suction cup 404 in real time and feeds the data back to the intelligent control system. When the pressure reaches a preset value, the intelligent control system adjusts the operating state of the vacuum pump 407; when the electric telescopic rod 401 descends and the pressure falls below a certain threshold, the intelligent control system stops the vacuum pump 407.

[0057] The intelligent control system automates and intelligently supports the tooling operation, reducing manual intervention and improving work efficiency and accuracy. Simultaneously, by adjusting the operating status of the vacuum pump 407 in real time based on pressure sensor data, it better ensures the stability of the suction force of the vacuum suction cup 404 and extends the service life of the vacuum pump 407.

[0058] It also includes a central control system, which is an industrial PLC. The central control system is connected to all electric telescopic rods 401 and vacuum pumps 407. When it receives information that spraying has reached the location of a certain support component 4, the central control system first controls the vacuum pump 407 of that support component 4 to stop working, releasing the vacuum suction cup 404 from the workpiece. Then, it controls the electric telescopic rod 401 of that support component 4 to descend, exposing the support position for spraying. After spraying at that position is completed, the central control system controls the electric telescopic rod 401 to rise back to its original position, and then restarts the vacuum pump 407 to allow the vacuum suction cup 404 to re-adhere to the workpiece. The central control system has a preset spraying path planning program, which can pre-plan the lifting sequence and time nodes of each support component 4 according to the shape, size and spraying requirements of the workpiece, achieving precise synchronization between support position adjustment and spraying operation. The central control system receives real-time spraying position information from the spraying equipment. Based on this information, it can accurately identify the specific location where spraying is currently underway. When the spraying area approaches the location of a certain support component 4, the central control system quickly sends control signals to the electric telescopic rod 401 and vacuum pump 407 of that support component 4. This causes the vacuum pump 407 to stop working, thus preventing the vacuum suction cup 404 from exerting suction on the workpiece. Upon receiving the signal, the electric telescopic rod 401 lowers as instructed, exposing the workpiece area previously obscured by the support component 4, allowing the spraying equipment to spray that area. After spraying is complete, the central control system can control the electric telescopic rod 401 to rise back to its original support position. Before spraying, the operator inputs detailed workpiece information, such as shape, size, and specific spraying requirements, into the central control system. The central control system uses its built-in spraying path planning program to analyze and process this information, and, combined with the distribution of the support components 4, pre-plans the lifting sequence and specific timing of each support component 4 throughout the spraying process. During the spraying process, the central control system strictly follows the preset planning program, precisely controlling the raising and lowering movements of the electric telescopic rods 401 of each support component 4. This ensures that the adjustment of the support position is closely coordinated with the spraying operation. The central control system has built-in 3D modeling software and path optimization algorithms. Operators can input the CAD model of the workpiece and spraying process parameters such as spray gun type, spraying speed, and coating thickness through the human-machine interface. The system analyzes the geometry of the workpiece, automatically identifies the support positions that need to be avoided, and generates a timing table for the raising and lowering of the support components based on the distribution of the support components 4. During the spraying process, the system precisely controls the movement of the vacuum pump 407 and the electric telescopic rod 401 of each support component 4 through real-time communication with the spraying robot, ensuring that the adjustment of the support position is synchronized with the spraying trajectory, with an error not exceeding 5mm.

[0059] 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 principles of this 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 support tool for large spray painted workpieces, characterized in that, include: The modular support system is assembled from multiple bases (1) through a splicing structure; A support assembly (4) is detachably fixed to the surface of the base (1) via a mounting bracket (3) at the bottom. The support assembly (4) includes: An electric telescopic rod (401) has its fixed end connected to the mounting bracket (3) and its telescopic end fixed to a vacuum suction cup (404). A silicone pad (405) covers the adsorption surface of the vacuum suction cup (404); The support assembly (4) also includes a vacuum system, which comprises: A vacuum pump (407) is fixedly installed on the mounting bracket (3); The hose (406) has one end connected to the suction end of the vacuum pump (407) and the other end sealed to the air inlet of the vacuum suction cup (404). The horizontal adjustment component (2) is located on the surface of the base (1) near the four corners.

2. A support tool for large spray painted workpieces according to claim 1, wherein, The vacuum pump (407) and the electric telescopic rod (401) are both fixedly connected to the mounting frame (3), and the surface of the mounting frame (3) is provided with bolts.

3. A support tool for large spray painted workpieces according to claim 2, wherein, The base (1) has T-shaped blocks (102) and T-shaped grooves (101) on its two adjacent sides, and threaded holes are provided on the mating surfaces of the T-shaped blocks (102) and T-shaped grooves (101).

4. A support tool for large spray painted workpieces according to claim 3, wherein, The support assembly also includes two symmetrically arranged telescopic sleeves (402) and a fixing rod (403). One end of the fixing rod (403) is welded to the vacuum suction cup (404), and the other end is inserted into the telescopic sleeve (402). The top end of the telescopic sleeve (402) is fixed to the mounting bracket (3).

5. The support tooling for large spray painted workpieces of claim 1 wherein, The horizontal adjustment assembly (2) includes a screw (201) threadedly connected to the base, with a pad (202) rotatably connected to the bottom end of the screw (201) and an operating handle at the top.

6. The support fixture for a large spray-painted workpiece according to claim 1, characterized in that, A pressure sensor and a flow regulating valve are provided on the hose (406). The pressure sensor is used to monitor the pressure inside the hose (406) in real time. The flow regulating valve is used to adjust the air flow rate of the vacuum pump (407) to the vacuum suction cup (404) according to the pressure data monitored by the pressure sensor, so as to ensure that the suction force of the vacuum suction cup (404) on the workpiece is stable.

7. The support fixture for a large spray-painted workpiece according to claim 1, characterized in that, The vacuum pump (407) is equipped with an intelligent control system, which is connected to the electric telescopic rod (401) and the pressure sensor.

8. The support fixture for a large spray-painted workpiece according to claim 1, characterized in that, It also includes a central control system, which is connected to all electric telescopic rods (401) and vacuum pumps (407). When it receives information that the workpiece is to be sprayed on a certain support component (4), the central control system first controls the vacuum pump (407) of the support component (4) to stop working, releases the vacuum suction cup (404) from adsorbing the workpiece, and then controls the electric telescopic rod (401) of the support component (4) to descend, so that the support position is exposed for spraying operation. After the spraying is completed at the position, the central control system controls the electric telescopic rod (401) to rise to the original position, and then starts the vacuum pump (407) to make the vacuum suction cup (404) re-adsorb the workpiece.

9. The support fixture for a large spray-painted workpiece according to claim 8, characterized in that, The central control system has a pre-set spraying path planning program, which can plan the lifting sequence and time nodes of each support component (4) in advance according to the shape, size and spraying requirements of the workpiece, so as to achieve precise synchronization between support position adjustment and spraying operation.

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