Distribution box spraying and drying equipment

By using infrared sensors and electric telescopic rods in the distribution box spraying equipment, automated spraying and drying of distribution boxes of different specifications is achieved, and the problem of low spraying efficiency of existing equipment is solved, and production efficiency and equipment adaptability are improved.

CN222659068UActive Publication Date: 2025-03-25LINGQIU GUOSHI ELECTRIC CO LTD
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Patent Information

Application Number
CN202421267066.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2025-03-25
Estimated Expiration
2034-06-04

AI Technical Summary

Technical Problem

Due to the fixed spray range of existing distribution box spraying equipment, it cannot adapt to distribution box of different specifications, resulting in low spray efficiency and many repetitions, which reduces production efficiency.

Method used

A distribution box spraying and drying equipment is designed, using infrared sensors to measure the height and width of the distribution box, combined with electric telescopic rods and adjustment components, automatically adjust the distance between the coating component and the distribution box, and drying is achieved through heating components, realizing automatic spraying and drying of the distribution box.

Benefits of technology

Through automated measurement and adjustment, the equipment can adapt to distribution boxes of different sizes, improving spraying efficiency and production efficiency, reducing manual intervention and paint waste, and reducing production costs.

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Abstract

The utility model relates to distribution box spraying and drying equipment, and relates to the technical field of distribution box production equipment.The distribution box spraying and drying equipment comprises a workbench, a drying box, a measuring assembly, an adjusting assembly, a coating assembly and a heating assembly, and the drying box is arranged on the workbench; the measuring assembly is arranged in the drying box and is used for measuring the height and the width of the distribution box; the adjusting assembly is arranged in the drying box and used for adjusting the distance between the coating assembly and the distribution box. The coating component is arranged on the adjusting component and is used for coating an insulating coating on the distribution box; the heating assembly is arranged on the adjusting assembly and used for drying paint on the distribution box. The spraying device has the effect of improving the spraying efficiency.
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Description

Technical Field

[0001] The present application relates to the technical field of distribution box production equipment, and in particular to a distribution box spray drying equipment. Background Art

[0002] In life, the use of electricity often requires the use of distribution boxes. During the production process, the distribution boxes often need to be sprayed to meet the requirements of corrosion resistance. After the spraying is completed, the distribution boxes need to be dried. Therefore, spray drying equipment is needed for the production of distribution boxes.

[0003] At present, general spray drying equipment is operated by turning a knob, which drives the drive shaft to rotate, the drive shaft drives the reverse screw to rotate, the reverse screw drives the slider to move, the slider drives the clamp to move in the opposite direction, and then the clamp clamps the distribution cabinet to prevent the distribution box from tipping over.

[0004] However, during the spraying process, due to the different specifications of the distribution boxes and the relatively fixed spraying range, the distribution boxes cannot be sprayed in one go, which increases the number of repetitions and reduces the spraying efficiency. Utility Model Content

[0005] In order to improve the efficiency of spraying, the present application provides a distribution box spray drying equipment.

[0006] The present application provides a distribution box spray drying equipment, which adopts the following technical solution:

[0007] A distribution box spray drying equipment comprises a workbench, a drying box, a measuring component, an adjusting component, a coating component and a heating component, wherein the drying box is arranged on the workbench; the measuring component is arranged in the drying box and is used to measure the height and width of the distribution box; the adjusting component is arranged in the drying box and is used to adjust the distance between the coating component and the distribution box; the coating component is arranged on the adjusting component and is used to apply insulating coating to the distribution box; the heating component is arranged on the adjusting component and is used to dry the coating on the distribution box.

[0008] By adopting the above technical scheme, the measuring component measures the height and width of the distribution box, the adjusting component adjusts the distance between the coating component and the distribution box, the coating component applies insulating coating to the distribution box, and at the same time, the heating component dries the coating on the distribution box. The automatic spraying and drying process of the distribution box can be realized, thereby improving the spraying efficiency and greatly improving the production efficiency.

[0009] Optionally, the measuring component includes an infrared sensor 1, two infrared sensors 2 and a controller, wherein the infrared sensor 1 is fixedly connected to the top of the drying box and is used to output a height signal of a distribution box; the two infrared sensors 2 are respectively located on both sides of the distribution box, and the two cooperate to output a width signal of the distribution box; the controller is fixedly connected to the drying box, and the infrared sensor 1 and the infrared sensor 2 are both electrically connected to the controller, and the controller responds to the height signal output by the infrared sensor 1 and the width signal output by the infrared sensor 2.

[0010] By adopting the above technical solution, the infrared sensor 1 outputs a height signal of the distribution box, the controller responds to the height signal output by the infrared sensor 1, and controls the injection amount of the paint in the paint assembly to meet the height requirement of the distribution box;

[0011] The two infrared sensors work together to output the width signal of the distribution box. The controller responds to the width signal output by the infrared sensor and controls the distance between the paint assembly and the distribution box, ensuring that the spray drying equipment can be adaptively adjusted according to distribution boxes of different sizes, thereby improving production efficiency and reducing the need for manual intervention.

[0012] Optionally, the adjustment component includes an electric telescopic rod 1 and an electric telescopic rod 2, wherein the electric telescopic rod 1 and the electric telescopic rod 2 are respectively located on both sides of the distribution box and are electrically connected to the controller; the controller is used to control the movement of the movable ends of the electric telescopic rod 1 and the electric telescopic rod 2.

[0013] By adopting the above technical solution, the two infrared sensors cooperate to output the width signal of the distribution box, the controller responds to the width signal output by the infrared sensor 2, and controls the movement of the movable ends of the electric telescopic rod 1 and the electric telescopic rod 2, and the movable ends of the electric telescopic rod 1 and the electric telescopic rod 2 drive the paint assembly to move, and adjust the paint assembly to a suitable position, so that the equipment can quickly adapt to distribution boxes of different sizes during the spraying and drying process, thereby improving production efficiency.

[0014] Optionally, the coating assembly includes a pad, a driving unit and a coating unit, the pad is fixedly connected to the workbench and located at the center of the workbench; the driving unit is provided with two groups, and the two groups of driving units are respectively located on both sides of the distribution box; the driving unit includes a motor, a gear and a spur rack, the motor is fixedly connected to the inner wall of the drying box, and the gear is coaxially fixed to the output shaft of the motor; the spur rack is slidably connected to the inner wall of the drying box, and the sliding direction is the axial direction of the drying box; the coating unit is arranged on the spur rack, and is used to paint the distribution box.

[0015] By adopting the above technical solution, the output shaft of the motor drives the gear to rotate, the gear drives the spur rack to move, the spur rack drives the coating unit to move along one side of the distribution box, and the coating unit paints the distribution box, thereby achieving precise sliding of the coating unit in the axial direction of the drying box, thereby ensuring that the coating can be evenly applied to the distribution box, thereby improving the quality and consistency of the coating.

[0016] Optionally, the coating unit is provided with two groups, and the two groups of coating units correspond one-to-one to the two groups of driving units; the coating unit includes a bracket, a fixed cylinder and a plurality of coating bodies, the bracket is fixedly connected to the spur rack, the fixed cylinder is rotatably connected to the bracket, and the axial direction is arranged parallel to the height direction of the drying box; the plurality of coating bodies are tightly arranged along the axial direction of the fixed cylinder, and the coating bodies are wrapped on the fixed cylinder; a coating box is fixedly provided on the electric telescopic rod, and the coating box is connected with a feed pipe, and the feed pipe is passed through the fixed cylinder; the feed pipe is connected with a rotating pipe, and the rotating pipe is rotatably connected to the feed pipe; the rotating pipe is connected with a plurality of discharge pipes, and the plurality of discharge pipes are arranged along the axial direction of the rotating pipe and correspond one-to-one to the plurality of coating bodies, and the discharge pipe is passed through the fixed cylinder and inserted into the coating body; the discharge pipe is provided with a solenoid valve, and the solenoid valve is electrically connected to the controller.

[0017] By adopting the above technical solution, the infrared sensor 1 outputs the height signal of the distribution box, the controller responds to the height signal output by the infrared sensor 1, and controls the solenoid valve to open, and the paint in the paint box enters the paint body through the feed pipe, the rotating pipe and the discharge pipe, from low to high, and the number of paint bodies is selected according to the height signal of the distribution box to adapt to the height of the distribution box;

[0018] Then, the gear drives the spur rack to move, the spur rack drives the bracket to move, the coating body abuts against the distribution box, and the fixed cylinder rotates, the fixed cylinder drives the coating body to rotate, and the coating body coats the distribution box, which can adapt to distribution boxes of different specifications, thereby improving production efficiency;

[0019] In addition, the waste of paint is reduced and the production cost is reduced.

[0020] Optionally, the heating components are provided in two groups, and the two groups of heating components are respectively arranged on the two brackets. The heating components include a connecting plate and a heater. The connecting plate is fixedly connected to the bracket and is located on one side of the fixed cylinder; the heater is fixedly connected to the connecting plate and is electrically connected to an external power supply.

[0021] By adopting the above technical solution, the spur rack drives the bracket to move, and the bracket drives the heater to move, which makes it easier to dry the newly applied paint, thereby shortening the drying time and further improving production efficiency.

[0022] Optionally, a plurality of supporting legs are fixedly provided at the bottom end of the workbench.

[0023] By adopting the above technical solution, the design of the supporting legs provides a solid supporting foundation for the workbench, ensuring that it can remain stable during the working process and is not prone to shaking or tilting.

[0024] Optionally, a shock-absorbing pad is fixedly provided at one end of the supporting leg away from the workbench.

[0025] By adopting the above technical solution, the main function of the shock-absorbing pad is to absorb and reduce the vibration and impact transmitted by the supporting legs, thereby effectively reducing the vibration amplitude and noise level of the workbench and the equipment thereon.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By setting up infrared sensor 1, two infrared sensors 2 and a controller, it is ensured that the spray drying equipment can be adaptively adjusted according to distribution boxes of different sizes, thereby improving production efficiency and reducing the need for manual intervention;

[0028] 2. By setting up the electric telescopic rod 1 and the electric telescopic rod 2, the equipment can quickly adapt to distribution boxes of different sizes during the spraying and drying process, thereby improving production efficiency;

[0029] 3. By setting the pad, driving part and coating part, it is ensured that the coating can be evenly applied on the distribution box, thereby improving the quality and consistency of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0031] Figure 2 yes Figure 1 Magnified view at A in the middle;

[0032] Figure 3 is a cross-sectional view of an adjustment component in an embodiment of the present application;

[0033] Figure 4 yes Figure 3 Magnified view at B.

[0034] Description of reference numerals:

[0035] 1. Workbench; 11. Support legs; 12. Shock-absorbing pads; 2. Drying box; 3. Measuring component; 31. Infrared sensor 1; 32. Infrared sensor 2; 33. Controller; 4. Adjusting component; 41. Electric telescopic rod 1; 42. Electric telescopic rod 2; 43. Paint box; 431. Feed pipe; 432. Rotating pipe; 433. Discharge pipe; 434. Solenoid valve; 5. Paint component; 51. Pad; 52. Drive unit; 521. Motor; 522. Gear; 523. Spur rack; 53. Paint unit; 531. Bracket; 532. Fixed cylinder; 533. Paint body; 6. Heating component; 61. Connecting plate; 62. Heater. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The present application embodiment discloses a distribution box spray drying device. Figure 1 , Figure 2 and Figure 3 A distribution box spray drying equipment includes a workbench 1, a drying box 2, a measuring component 3, an adjusting component 4, a coating component 5 and a heating component 6, the drying box 2 is fixedly connected to the workbench 1; the measuring component 3 is arranged in the drying box 2, and is used to measure the height and width of the distribution box; the adjusting component 4 is arranged in the drying box 2, and is used to adjust the distance between the coating component 5 and the distribution box; the coating component 5 is arranged on the adjusting component 4, and is used to apply insulating coating to the distribution box; the heating component 6 is arranged on the adjusting component 4, and is used to dry the coating on the distribution box.

[0038] When in use, the measuring component 3 measures the height and width of the distribution box, the adjusting component 4 adjusts the distance between the coating component 5 and the distribution box, the coating component 5 adjusts the injection amount of the coating and applies insulating coating to the distribution box. At the same time, the heating component 6 dries the coating on the distribution box, thereby improving the efficiency of spraying and greatly improving the production efficiency.

[0039] Reference Figure 1 The workbench 1 is in the shape of a rectangular plate and is arranged horizontally. Four supporting legs 11 are fixedly arranged at the bottom end of the workbench 1. The four supporting legs 11 are respectively located at the four vertices of the workbench 1. The supporting legs 11 are in the shape of a rectangular column and are arranged vertically. A shock-absorbing pad 12 is fixedly arranged at one end of the supporting leg 11 away from the workbench 1.

[0040] The drying box 2 is rectangular and horizontally arranged. The length direction of the drying box 2 is arranged parallel to the length direction of the workbench 1. Both ends of the drying box 2 in the length direction are open.

[0041] Reference Figure 1 and Figure 3The measuring component 3 includes an infrared sensor 1 31, two infrared sensors 2 32 and a controller 33. The infrared sensor 1 31 is fixedly connected to the center of the top of the drying box 2 and is located inside the drying box 2. The infrared sensor 1 31 is used to output a height signal of the distribution box.

[0042] The two infrared sensors 2 32 are respectively located on both sides of the drying box 2 in the width direction, and the two cooperate to output the width signal of the distribution box. The controller 33 is fixedly connected to the top of the drying box 2 and is located on one side of the infrared sensor 1 31. The infrared sensor 1 31 and the infrared sensor 2 32 are both electrically connected to the controller 33. The controller 33 responds to the height signal output by the infrared sensor 1 31 and the width signal output by the infrared sensor 2 32.

[0043] Reference Figure 1 , Figure 2 and Figure 4 The adjustment component 4 includes an electric telescopic rod 1 41 and an electric telescopic rod 2 42, which are respectively located on both sides of the distribution box in the width direction and are both located in the drying box 2. The movable ends of the electric telescopic rod 1 41 and the electric telescopic rod 2 42 are arranged in a direction close to each other. The electric telescopic rod 1 41 and the electric telescopic rod 2 42 are both electrically connected to the controller 33, and the controller 33 is used to control the movement of the movable ends of the electric telescopic rod 1 41 and the electric telescopic rod 2 42.

[0044] Reference Figure 1 and Figure 2 The coating assembly 5 includes a pad 51 , a driving portion 52 and a coating portion 53 . The pad 51 is in the shape of a rectangular plate and is horizontally arranged. The pad 51 is fixedly connected to the workbench 1 and is located at the center of the workbench 1 .

[0045] Reference Figure 2 and Figure 3 There are two groups of driving parts 52, which are respectively located on both sides of the width direction of the drying box 2. The driving part 52 includes a motor 521, a gear 522 and a spur rack 523. The motor 521 is fixedly connected to the inner wall of the drying box 2 through a support plate, and the gear 522 is coaxially fixedly connected to the output shaft of the motor 521; the spur rack 523 is slidably connected to the inner wall of the drying box 2, and the sliding direction is the axial direction of the drying box 2.

[0046] Reference Figure 2 and Figure 3 The coating unit 53 is provided with two groups, and the two groups of coating units 53 correspond to the two groups of driving units 52. The coating unit 53 includes a bracket 531, a fixing cylinder 532 and four coating bodies 533. The bracket 531 is in a rectangular plate shape, and the two ends are bent at 90 degrees in a direction close to each other. The bracket 531 is vertically arranged and fixedly connected to the straight rack 523.

[0047] The fixed cylinder 532 is vertically arranged, and its two ends are rotatably connected to the two curved ends of the bracket 531. Four paint bodies 533 are closely arranged along the axis direction of the fixed cylinder 532, and the paint bodies 533 are wrapped on the fixed cylinder 532. In this embodiment, the paint bodies 533 are sponges. A paint box 43 is fixed on the electric telescopic rod, and the paint box 43 is connected to a feed pipe 431, which is passed through the fixed cylinder 532.

[0048] Reference Figure 3 and Figure 4 The feed pipe 431 is connected to a rotating pipe 432, which is rotatably connected to the feed pipe 431; the rotating pipe 432 is connected to four discharge pipes 433, which are evenly arranged along the axial direction of the rotating pipe 432 and correspond one by one to the four coating bodies 533.

[0049] The discharge pipe 433 is passed through the fixed tube 532 and inserted into the coating body 533 . The discharge pipe 433 is provided with a solenoid valve 434 , which is electrically connected to the controller 33 .

[0050] When in use, the infrared sensor 31 outputs a height signal of the distribution box, the controller 33 responds to the height signal output by the infrared sensor 31, and controls the electromagnetic valve 434 to open, and the paint in the paint box 43 enters the paint body 533 through the feed pipe 431, the rotating pipe 432 and the discharge pipe 433, from low to high, and the amount of the paint body 533 is selected according to the height signal of the distribution box;

[0051] The two infrared sensors 2 32 cooperate to output the width signal of the distribution box. The controller 33 responds to the width signal output by the infrared sensor 2 32 and controls the movable ends of the electric telescopic rod 1 41 and the electric telescopic rod 2 42 to move. The movable ends of the electric telescopic rod 1 41 and the electric telescopic rod 2 42 respectively drive the two brackets 531 to move, control the distance between the sponge and the distribution box, and the sponge abuts against the distribution box.

[0052] The output shaft of motor 521 drives gear 522 to rotate, gear 522 drives spur rack 523 to move, spur rack 523 drives bracket 531 to move, sponge abuts against the distribution box, rotates through fixed cylinder 532, fixed cylinder 532 drives sponge to rotate, and coating body 533 coats the distribution box, which can adapt to distribution boxes of different specifications, thereby improving production efficiency.

[0053] Reference Figure 3 The heating assembly 6 is provided with two groups, and the two groups of heating assemblies 6 are respectively arranged on two brackets 531. The heating assembly 6 includes a connecting plate 61 and a heater 62. The connecting plate 61 is fixedly connected to the bracket 531 and is located on one side of the fixing cylinder 532. The heater 62 is fixedly connected to the connecting plate 61 and is electrically connected to an external power source.

[0054] When in use, the spur rack 523 drives the bracket 531 to move, and the bracket 531 drives the heater 62 to move, so as to facilitate drying of the newly applied paint, thereby shortening the drying time and improving production efficiency.

[0055] The implementation principle of a distribution box spray drying device in the embodiment of the present application is as follows: the infrared sensor 31 outputs a height signal of the distribution box, the controller 33 responds to the height signal output by the infrared sensor 31, and controls the solenoid valve 434 to open, and the paint in the paint box 43 enters the paint body 533 through the feed pipe 431, the rotating pipe 432 and the discharge pipe 433, from low to high, and the number of paint bodies 533 is selected according to the height signal of the distribution box;

[0056] The two infrared sensors 2 32 cooperate to output the width signal of the distribution box. The controller 33 responds to the width signal output by the infrared sensor 2 32 and controls the movable ends of the electric telescopic rod 1 41 and the electric telescopic rod 2 42 to move. The movable ends of the electric telescopic rod 1 41 and the electric telescopic rod 2 42 respectively drive the two brackets 531 to move, control the distance between the sponge and the distribution box, and the sponge abuts against the distribution box.

[0057] The output shaft of the motor 521 drives the gear 522 to rotate, the gear 522 drives the spur rack 523 to move, the spur rack 523 drives the bracket 531 to move, the sponge abuts against the distribution box, and rotates through the fixed cylinder 532, the fixed cylinder 532 drives the sponge to rotate, and the coating body 533 coats the distribution box.

[0058] At the same time, the spur rack 523 drives the bracket 531 to move, and the bracket 531 drives the heater 62 to move, so as to facilitate drying of the newly applied paint and adapt to distribution boxes of different specifications, thereby improving production efficiency.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A distribution box spray drying equipment, characterized in that: The invention comprises a workbench (1), a drying box (2), a measuring component (3), an adjusting component (4), a coating component (5) and a heating component (6), wherein the drying box (2) is arranged on the workbench (1); the measuring component (3) is arranged in the drying box (2) and is used to measure the height and width of a distribution box; the adjusting component (4) is arranged in the drying box (2) and is used to adjust the distance between the coating component (5) and the distribution box; the coating component (5) is arranged on the adjusting component (4) and is used to apply insulating coating to the distribution box; and the heating component (6) is arranged on the adjusting component (4) and is used to dry the coating on the distribution box.

2. A distribution box spray drying equipment according to claim 1, characterized in that: The measuring assembly (3) comprises an infrared sensor 1 (31), two infrared sensors 2 (32) and a controller (33); the infrared sensor 1 (31) is fixedly connected to the top of the drying box (2) and is used to output a height signal of a distribution box; the two infrared sensors 2 (32) are respectively located on both sides of the distribution box, and the two cooperate to output a width signal of the distribution box; the controller (33) is fixedly connected to the drying box (2); the infrared sensor 1 (31) and the infrared sensor 2 (32) are both electrically connected to the controller (33); the controller (33) responds to the height signal output by the infrared sensor 1 (31) and the width signal output by the infrared sensor 2 (32).

3. A distribution box spray drying equipment according to claim 2, characterized in that: The adjustment assembly (4) comprises an electric telescopic rod 1 (41) and an electric telescopic rod 2 (42), wherein the electric telescopic rod 1 (41) and the electric telescopic rod 2 (42) are respectively located on two sides of the distribution box and are both electrically connected to the controller (33); the controller (33) is used to control the movement of the movable ends of the electric telescopic rod 1 (41) and the electric telescopic rod 2 (42).

4. A distribution box spray drying equipment according to claim 3, characterized in that: The coating component (5) comprises a pad (51), a driving unit (52) and a coating unit (53); the pad (51) is fixedly connected to the workbench (1) and is located at the center of the workbench (1); two groups of driving units (52) are provided, and the two groups of driving units (52) are respectively located on both sides of the distribution box; the driving unit (52) comprises a motor (521), a gear (522) and a spur rack (523); the motor (521) is fixedly connected to the inner wall of the drying box (2), and the gear (522) is coaxially fixedly connected to the output shaft of the motor (521); the spur rack (523) is slidably connected to the inner wall of the drying box (2), and the sliding direction is the axial direction of the drying box (2); the coating unit (53) is provided on the spur rack (523) and is used to coat the distribution box.

5. A distribution box spray drying equipment according to claim 4, characterized in that: The coating unit (53) is provided with two groups, and the two groups of coating units (53) correspond to the two groups of driving units (52) one by one; the coating unit (53) comprises a bracket (531), a fixed cylinder (532) and a plurality of coating bodies (533); the bracket (531) is fixedly connected to the spur rack (523); the fixed cylinder (532) is rotatably connected to the bracket (531), and the axial direction is arranged parallel to the height direction of the drying box (2); the plurality of coating bodies (533) are closely arranged along the axial direction of the fixed cylinder (532), and the coating bodies (533) are wrapped around the fixed cylinder (532); a coating box (43) is fixedly provided on the electric telescopic rod, and the coating box (43) is connected to the paint box (531). A feed pipe (431) is provided, and the feed pipe (431) is passed through the fixed cylinder (532); the feed pipe (431) is connected to a rotating pipe (432), and the rotating pipe (432) is rotatably connected to the feed pipe (431); the rotating pipe (432) is connected to a plurality of discharge pipes (433), and the plurality of discharge pipes (433) are arranged along the axial direction of the rotating pipe (432) and correspond one to one to the plurality of coating bodies (533), and the discharge pipes (433) are passed through the fixed cylinder (532) and inserted into the coating body (533); a solenoid valve (434) is provided on the discharge pipe (433), and the solenoid valve (434) is electrically connected to the controller (33).

6. A distribution box spray drying equipment according to claim 5, characterized in that: The heating components (6) are provided in two groups, and the two groups of the heating components (6) are respectively provided on the two brackets (531). The heating components (6) comprise a connecting plate (61) and a heater (62). The connecting plate (61) is fixedly connected to the bracket (531) and is located on one side of the fixing cylinder (532); the heater (62) is fixedly connected to the connecting plate (61) and is electrically connected to an external power supply.

7. The distribution box spray drying equipment according to claim 1, characterized in that: A plurality of supporting legs (11) are fixedly provided at the bottom end of the workbench (1).

8. The distribution box spray drying equipment according to claim 7, characterized in that: A shock-absorbing pad (12) is fixedly provided at one end of the support leg (11) away from the workbench (1).