A support frame for spray painting

Abstract

The utility model discloses a support frame of hanging spray, including base, the upper portion mounting of base height adjustable support, the lower portion mounting of support has the clamping mechanism of clamping to spray piece, the clamping mechanism includes setting the fixed block of support lower part, the lower surface of fixed block has set up the movable slot, and the lateral wall of fixed block is installed with the servo motor of drive bidirectional screw rod rotation, the inside movable slot is installed to bidirectional screw rod rotation, and the both ends of bidirectional screw rod are respectively screw -threaded and are installed movable block, and the middle part of two groups movable block is installed with the clamping block of opposite setting and penetrates, and every group clamping block realizes detachable connection with corresponding movable block through positioning assembly. Through servo motor drive bidirectional screw rod drive movable block and clamping block, have solved the problem of traditional spring clamp unreliable, and clamping block is detachable connection with movable block through positioning assembly, and can replace the flexible adaptation clamping block according to the appearance of spray piece, and the operation efficiency of promotion adaptation ability.

Description

Technical Field

[0001] This utility model relates to the field of thermal spraying technology, specifically to a support frame for suspended spraying. Background Technology

[0002] In the field of thermal spraying technology, plasma spraying and supersonic spraying are key processes for preparing high-performance functional coatings. To achieve high-quality bonding between the coating and the workpiece surface and to avoid incomplete spraying, uneven thickness, or localized damage, the workpiece needs to be stably suspended and fixed using a support frame.

[0003] Currently, some suspended spraying brackets use springs to push clamps to hold workpieces. In practical applications, the clamping force provided by the springs is often insufficient to reliably clamp the workpieces, easily causing them to fall off during the spraying process. Furthermore, the connection structure between the springs and the clamps makes it difficult to quickly replace the appropriate clamps based on the workpiece's shape, affecting operational efficiency and adaptability.

[0004] As in the prior art, Chinese utility model publication CN 215997211 U discloses a metal product spraying bracket that can be suspended for spraying, including a base, a turntable fixed above the base, and a positioning mechanism installed above the turntable. The positioning mechanism includes a mounting plate, a fixing plate, a return spring, and a clamping plate. The fixing plate is fixed below the mounting plate, and the left side of the fixing plate is connected to the return spring, and the clamping plate is fixed to the left side of the return spring.

[0005] The cited patent reveals the aforementioned problems in the prior art, thus necessitating a support frame for suspended spraying. Utility Model Content

[0006] The purpose of this utility model is to provide a support frame for hanging spraying. By setting a bidirectional screw clamping mechanism driven by a servo motor and a detachable positioning component between the clamping block and the movable block, it solves the technical problems mentioned in the background art, such as unreliable spring clamping force causing workpiece to fall off and inconvenient clamping plate replacement.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A support frame for suspended spraying includes a base, an adjustable bracket mounted on the upper part of the base, and a clamping mechanism for holding the sprayed parts mounted on the lower part of the bracket.

[0009] The clamping mechanism includes a fixed block disposed at the lower part of the bracket. The lower surface of the fixed block has a movable groove. A servo motor for driving a bidirectional screw to rotate is installed on the side wall of the fixed block. The bidirectional screw is rotatably installed inside the movable groove. Movable blocks embedded in the movable groove are threaded at both ends of the bidirectional screw. Opposite clamping blocks are installed through the middle of the two sets of movable blocks. Each set of clamping blocks is detachably connected to the corresponding movable block through a positioning component.

[0010] Preferably, each set of movable blocks has a through hole in the middle for mounting clamping blocks, and one end of each set of clamping blocks is inserted into the middle of the corresponding through hole. The clamping surfaces of both sets of clamping blocks are provided with protective pads.

[0011] Preferably, the positioning component includes a circular groove formed in the side wall of the through hole, and a positioning pin is connected inside the circular groove by a spring. The side wall of the clamping block is provided with a positioning groove that matches the positioning pin.

[0012] Preferably, a pull rod is installed on the side wall of the positioning pin extending through to the outside of the movable block, and the spring is sleeved on the outside of the pull rod.

[0013] Preferably, the bracket includes two sets of fixed cylinders symmetrically installed on the upper part of the base, and a support column is slidably installed in the middle of each set of fixed cylinders.

[0014] Preferably, each set of fixed cylinders is equipped with a hydraulic push rod that drives the support column to move in the vertical direction, and the output end of each set of hydraulic push rods is connected to the bottom of the corresponding support column.

[0015] Preferably, the upper part of the two sets of support columns is equipped with the same horizontal plate, and the clamping mechanism is located at the bottom of the horizontal plate.

[0016] Preferably, a stepper motor for driving the clamping mechanism to rotate is installed on the upper part of the horizontal plate, and the output shaft of the stepper motor passes through the horizontal plate and is connected to the upper surface of the fixed block.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] By using a servo motor to drive a bidirectional screw to move the movable block and clamping block, a stable and adjustable clamping force can be provided, effectively avoiding the unreliable clamping problems caused by elastic fatigue, force attenuation, or uneven force in traditional spring clamping methods. At the same time, the clamping block is detachably connected to the movable block through a positioning component, allowing for flexible replacement of appropriate clamping blocks according to the different shapes of the parts to be coated. This not only reduces the operation time for changing clamping blocks but also improves the adaptability of the device to diverse workpieces, further enhancing the operating efficiency and production flexibility of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram showing the disassembled structure of the central part of the movable block of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the support structure of this utility model.

[0024] In the diagram: 1. Base; 2. Bracket; 21. Fixed cylinder; 22. Support column; 23. Hydraulic push rod; 24. Horizontal plate; 3. Clamping mechanism; 31. Fixed block; 32. Movable groove; 33. Servo motor; 34. Bidirectional screw; 35. Movable block; 36. Through hole; 37. Clamping block; 38. Protective pad; 39. Positioning component; 391. Circular groove; 392. Spring; 393. Positioning pin; 394. Positioning groove; 395. Pull rod; 4. Stepper motor. Detailed Implementation

[0025] 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.

[0026] This utility model provides: a support frame for hanging spray painting, such as... Figures 1-5 As shown, the device includes a base 1, an adjustable bracket 2 mounted on the upper part of the base 1, and a clamping mechanism 3 for holding the parts to be painted mounted on the lower part of the bracket 2. The base 1 is the basic load-bearing component of the entire device, providing a stable mounting platform and support for all upper components. The adjustable bracket 2 is used to adjust the overall height according to the size of the parts to be painted and the operating height requirements of the painting equipment, while providing a suitable installation height for the clamping mechanism 3, ensuring that the clamping mechanism 3 can hold the parts to be painted in the best possible position.

[0027] The clamping mechanism 3 includes a fixed block 31 located at the lower part of the bracket 2. The lower surface of the fixed block 31 is provided with a movable groove 32. A servo motor 33 for driving a bidirectional screw 34 to rotate is installed on the side wall of the fixed block 31. The bidirectional screw 34 is rotatably installed inside the movable groove 32. Movable blocks 35 embedded in the movable groove 32 are threadedly installed at both ends of the bidirectional screw 34. Opposite clamping blocks 37 are installed through the middle of the two sets of movable blocks 35. Each set of clamping blocks 37 is detachably connected to the corresponding movable block 35 through a positioning component 39. The movable groove 32 on the lower surface of the fixed block 31 provides movement space and guide trajectory for the bidirectional screw 34 and the movable block 35, preventing them from moving off course. When the servo motor 33 is powered on, it can drive the bidirectional screw 34 to rotate stably in the movable groove 32. The two ends of the bidirectional screw 34 are provided with reverse threads, which can drive the two sets of movable blocks 35 to move synchronously closer or further away along the movable groove 32 when rotating. The clamping block 37 moves with the movable block 35 to clamp and release the sprayed part. The positioning component 39 connects the clamping block 37 and the movable block 35 to achieve detachable fixation of the two. When it is necessary to clamp the sprayed part, the servo motor 33 starts, driving the bidirectional screw 34 to rotate, which drives the two sets of movable blocks 35 and clamping blocks 37 to move closer to each other until the sprayed part is clamped. This effectively solves the problem of unreliable clamping and workpiece falling off caused by elastic fatigue, force decay or uneven force in traditional spring clamping. When it is necessary to adapt to sprayed parts with different shapes, the old clamping block can be quickly disassembled and the new clamping block can be installed through the positioning component 39. There is no need to disassemble the complex structure, reducing replacement time and improving the device's adaptability to diverse workpieces and operating efficiency.

[0028] The servo motor 33 can be a motor with a rated power of 400W, a rated torque of 1.27N·m, and a rated speed of 3000rpm. The 400W rated power can meet the power requirements of the support frame clamping mechanism and can stably drive the bidirectional screw to rotate; the rated torque of 1.27N·m can firmly clamp the painted parts without damaging the surface of the painted parts due to excessive torque; the rated speed of 3000rpm, together with the transmission mechanism, can control the movement speed of the clamping block at 5-10mm / s, achieving smooth clamping and avoiding impact damage to the painted parts.

[0029] Preferably, each set of movable blocks 35 has a through hole 36 in the middle for mounting clamping blocks 37, and one end of each set of clamping blocks 37 is inserted into the middle of the corresponding through hole 36. The clamping surfaces of both sets of clamping blocks 37 are provided with protective pads 38. The through hole 36 in the middle of the movable block 35 is an installation channel designed for the clamping block 37. Its inner diameter is precisely matched with the cross-sectional dimensions of one end of the clamping block 37, ensuring that the clamping block 37 can be inserted smoothly without lateral wobbling. One end of the clamping block 37 is inserted into the middle of the corresponding through hole 36. This insertion structure simplifies the assembly process of the clamping block 37 and the movable block 35, while ensuring the coaxiality of the clamping block 37 when it moves with the movable block 35, and avoiding deviation in the clamping direction. The protective pad 38 is pasted or embedded on the clamping surface of the two sets of clamping blocks 37. It is made of flexible wear-resistant materials such as rubber and silicone to buffer the clamping force and protect the surface of the sprayed part, avoiding scratches and pressure damage to the surface of the sprayed part caused by direct contact of the rigid clamping blocks. At the same time, the protective pad 38 can increase the friction of the clamping surface, further improving the stability of the sprayed part during operation and preventing slippage due to vibration.

[0030] Furthermore, the positioning component 39 includes a circular groove 391 formed in the side wall of the through hole 36. A positioning pin 393 is connected inside the circular groove 391 via a spring 392. The side wall of the clamping block 37 has a positioning groove 394 adapted to the positioning pin 393. The circular groove 391 is formed in the side wall of the through hole 36, and its internal space is used to accommodate the spring 392 and the positioning pin 393, providing installation and movement guidance for both and preventing component misalignment. The spring 392 is in an extended state in its natural state and can apply a continuous outward elastic force to the positioning pin 393. One end of the positioning pin 393 is fixedly connected to the spring 392, and the other end can extend out of the circular groove 391 under the action of the spring 392. The positioning groove 394 formed in the side wall of the clamping block 37 is adapted to the size of the extended end of the positioning pin 393 and is used to engage with the positioning pin 393 to achieve axial fixation of the clamping block 37.

[0031] Furthermore, a pull rod 395 is installed on the side wall of the positioning pin 393, extending through to the outside of the movable block 35, and a spring 392 is sleeved on the outside of the pull rod 395. The pull rod 395 installed on the side wall of the positioning pin 393 extends through to the outside of the movable block 35, providing the operator with a convenient point of force application, thereby controlling the movement of the positioning pin 393; the spring 392 sleeved on the outside of the pull rod 395, in addition to providing elastic force to push the positioning pin 393, also uses the pull rod 395 as a guide axis to prevent the spring 392 from shifting or twisting laterally during compression and extension, ensuring that the elastic force of the spring 392 is always along the axial direction, and ensuring the stable movement of the positioning pin 393. When disassembling clamp 37, the operator pulls the lever 395 outward. The lever 395 moves the locating pin 393 into the circular groove 391, simultaneously compressing the spring 392, causing the locating pin 393 to completely disengage from the locating groove 394 of clamp 37. At this point, clamp 37 can be easily pulled out of through hole 36. After replacing with a new clamp 37, the lever 395 is released, and the spring 392 returns to its extended state under elastic force, pushing the locating pin 393 and lever 395 back to their original positions. The locating pin 393 then re-embeds into the locating groove 394 of the new clamp 37, completing the fixation. The lever 395 makes the operation of the positioning assembly 39 more convenient, significantly shortens the replacement time of clamp 37, and improves work efficiency.

[0032] It is worth noting that the bracket 2 includes two sets of fixed cylinders 21 symmetrically mounted on the upper part of the base 1, with a support column 22 slidably mounted in the middle of each set of fixed cylinders 21. The internal cavities of the two sets of fixed cylinders 21 are precisely matched with the cross-sectional dimensions of the support column 22, ensuring that the support column 22 can slide stably along the axis of the fixed cylinder 21 without radial displacement. The support column 22 is slidably mounted in the middle of the fixed cylinder 21, and adjusts the overall height of the bracket 2 through its own extension and retraction to adapt to different spraying requirements. Depending on the height of the part to be sprayed and the working range of the spraying equipment, the operator can push the support column 22 through the drive component, causing the support column 22 to slide up and down along the internal cavity of the fixed cylinder 21, providing a suitable working height for the clamping mechanism 3.

[0033] Preferably, each set of fixed cylinders 21 is equipped with a hydraulic push rod 23 that drives the support column 22 to move vertically. The output end of each set of hydraulic push rods 23 is connected to the bottom of the corresponding support column 22. The output end of the hydraulic push rod 23 is rigidly connected to the bottom of the support column 22. When it is necessary to raise the height of the bracket 2, the hydraulic push rod 23 is driven by the hydraulic system, and its output end extends outward, pushing the support column 22 to slide upward along the inside of the fixed cylinder 21 until the set height is reached. After the adjustment is completed, no additional locking structure is needed to keep the position of the support column 22 stable, avoiding the errors and instability of manual adjustment.

[0034] The hydraulic push rod 23 can be a hydraulic push rod with a rated thrust of 5000N, a working speed of 10mm / s, and a built-in mechanical self-locking function. The rated thrust of 5000N can easily support the total load of the device, preventing the bracket from sinking unexpectedly due to insufficient thrust; the working speed of 10mm / s can achieve smooth lifting and lowering, preventing the clamping mechanism from shaking and the painted parts from shifting due to excessively rapid lifting and lowering of the bracket; the built-in mechanical self-locking function eliminates the need for an additional locking structure, and the position of the support column 22 can be directly fixed after adjusting the height, preventing the bracket from falling due to hydraulic leakage during the spraying process.

[0035] Specifically, the upper part of the two sets of support columns 22 is equipped with the same horizontal plate 24, and the clamping mechanism 3 is set at the bottom of the horizontal plate 24. The horizontal plate 24 is used to connect the support columns 22 and the clamping mechanism 3, enhance the structural rigidity of the bracket 2, and prevent swaying when a single support column 22 is under force. The clamping reaction force generated by the clamping mechanism 3 during operation, the weight of the sprayed part, and other loads are all transmitted to the horizontal plate 24 through the fixing block 31; the horizontal plate 24 distributes the load to the two sets of support columns 22, prevents overload of a single support column 22, and ensures that the clamping mechanism 3 remains stable during operation.

[0036] More specifically, a stepper motor 4, which drives the clamping mechanism 3 to rotate, is installed on the upper part of the horizontal plate 24. The output shaft of the stepper motor 4 passes through the horizontal plate 24 and is connected to the upper surface of the fixed block 31. The stepper motor 4 drives the clamping mechanism 3 to achieve arbitrary angle stopping or uniform speed rotation within the range of 0-360°. Its output shaft passes through the horizontal plate 24 and is rigidly connected to the upper surface of the fixed block 31 of the clamping mechanism 3, directly transmitting the rotational power to the entire clamping mechanism 3. When multi-angle spraying is required on the part to be coated, the output shaft of the stepper motor 4 rotates at the set angle and speed, driving the entire clamping mechanism 3 and the clamped part to rotate synchronously, ensuring that the spraying equipment can uniformly spray all surfaces of the part; at the same time, the stable rotation of the stepper motor 4 will not affect the clamping force of the clamping mechanism 3, preventing the part from falling off during rotation.

[0037] The stepper motor 4 can be selected with a step angle of 1.8° (supporting 16 subdivisions, resulting in a step angle of 0.1125° after subdivision) and a holding torque of 0.8 N·m. The 1.8° step angle, after 16 subdivisions, achieves an angle accuracy of 0.1125°, precisely controlling the rotation angle of the clamping mechanism and preventing uneven coating due to angle deviations. The 0.8 N·m holding torque firmly fixes the clamping mechanism in position when the stepper motor stops rotating, preventing accidental rotation due to the weight of the workpiece.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support frame for suspended spraying, characterized in that: Includes a base (1), the upper part of which is equipped with a height-adjustable bracket (2), and the lower part of which is equipped with a clamping mechanism (3) for clamping the sprayed parts; The clamping mechanism (3) includes a fixed block (31) located at the lower part of the bracket (2). The lower surface of the fixed block (31) is provided with a movable groove (32). A servo motor (33) for driving a bidirectional screw (34) to rotate is installed on the side wall of the fixed block (31). The bidirectional screw (34) is rotatably installed inside the movable groove (32). Movable blocks (35) embedded in the movable groove (32) are threaded at both ends of the bidirectional screw (34). A clamping block (37) is installed through the middle of the two sets of movable blocks (35). Each set of clamping blocks (37) is detachably connected to the corresponding movable block (35) through a positioning component (39).

2. The support frame for suspended spraying according to claim 1, characterized in that: Each set of movable blocks (35) has a through hole (36) for mounting clamping blocks (37) in the middle. One end of each set of clamping blocks (37) is inserted into the middle of the corresponding through hole (36). The clamping surfaces of both sets of clamping blocks (37) are provided with protective pads (38).

3. The support frame for suspended spraying according to claim 2, characterized in that: The positioning component (39) includes a circular groove (391) formed on the side wall of the through hole (36), and a positioning pin (393) is connected inside the circular groove (391) by a spring (392). The side wall of the clamping block (37) is provided with a positioning groove (394) that is adapted to the positioning pin (393).

4. The support frame for suspended spraying according to claim 3, characterized in that: The sidewall of the positioning pin (393) extends through to the outside of the movable block (35) and a pull rod (395) is installed thereon, and the spring (392) is sleeved on the outside of the pull rod (395).

5. The support frame for suspended spraying according to claim 1, characterized in that: The bracket (2) includes two sets of fixed cylinders (21) symmetrically installed on the upper part of the base (1), and a support column (22) is slidably installed in the middle of each set of fixed cylinders (21).

6. The support frame for suspended spraying according to claim 5, characterized in that: Each set of fixed cylinders (21) is equipped with a hydraulic push rod (23) that drives the support column (22) to move in the vertical direction. The output end of each set of hydraulic push rods (23) is connected to the bottom of the corresponding support column (22).

7. A support frame for suspended spraying according to claim 6, characterized in that: The two sets of support columns (22) are equipped with the same horizontal plate (24) on their upper parts, and the clamping mechanism (3) is located at the bottom of the horizontal plate (24).

8. A support frame for suspended spraying according to claim 7, characterized in that: The upper part of the horizontal plate (24) is equipped with a stepper motor (4) that drives the clamping mechanism (3) to rotate. The output shaft of the stepper motor (4) passes through the horizontal plate (24) and is connected to the upper surface of the fixed block (31).

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