Surface treatment device for electrical box body machining

Abstract

The invention relates to the technical field of metal processing equipment, and discloses a surface treatment device for electrical box processing, which comprises a bottom bracket, and a conveyor and a liftable lifting bracket which are fixedly connected are arranged above the bottom bracket; dust collection boxes and polishing assemblies which are distributed in an array mode are arranged above the lifting support, and the dust collection boxes and the polishing assemblies are arranged in a staggered mode; pressing rods distributed in an array mode are arranged in the lifting support. According to the surface treatment device for electrical box body machining, automatic structural design is adopted, the automation degree is high, surface treatment operation of electrical box body metal plates can be automatically conducted, the whole feeding, pressing and advancing polishing process is smooth and stable, the surface treatment device can be suitable for metal plates of different thicknesses, the bidirectional metal plate feeding design is adopted, and the production efficiency is improved. And after the device is used for a long time, tensioning adjustment of the polishing belt can be automatically conducted, and manual operation is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing equipment, in particular to a surface treatment device for processing electrical boxes. Background Art

[0002] The electrical box is made of different metal plates welded together. In order to adapt to different usage environments, it is often necessary to spray the outer surface of the metal plate. Before spraying, the outer surface of the metal plate needs to be polished to make the spraying effect better and prevent paint from falling off.

[0003] Most of the current metal sheet surface treatment devices use grinding discs and grinding belts to perform metal sheet surface treatment operations. The market share of grinding belts is constantly increasing due to their high grinding efficiency. However, the conventional grinding belt metal sheet surface treatment has a low degree of automation, and structural settings and adjustments are often required in the middle. Moreover, the grinding belt will stretch after long-term use. At this time, the general operation is to stop the machine and manually adjust the tension. The shutdown will affect the entire processing process, and there is no unified monitoring of the tension of the grinding belt. The grinding belt often deviates or twists due to being too loose, which seriously affects the life of the grinding belt.

[0004] To this end, we propose a surface treatment device for electrical box processing. Summary of the Invention

[0005] The present invention mainly aims to solve the technical problems existing in the above-mentioned prior art and provides a surface treatment device for processing electrical boxes.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A surface treatment device for electrical box processing, comprising a bottom bracket, a fixedly connected conveyor and a lift bracket that can be lifted and lowered are provided above the bottom bracket; A dust collection box and a polishing assembly are arranged in an array above the lifting bracket, and the dust collection box and the polishing assembly are arranged in a staggered manner; The lifting bracket is provided with an array of pressure rods distributed inside; The polishing assembly includes a first bracket, a rotatable lower roller is provided inside the first bracket, the height of the lower roller is adjustable, and a liftable upper roller is provided above the first bracket, the diameter of the upper roller is smaller than the diameter of the lower roller; A second bracket is fixedly connected to the upper end surface of the first bracket, and a third electric cylinder is fixedly connected to both sides of the second bracket. A second lifting frame is fixedly connected to the telescopic end of the third electric cylinder, and auxiliary adjustment modules are provided on both sides of the second lifting frame. The auxiliary adjustment module includes a mounting base column, which is fixedly connected to the second lifting frame, an infrared ranging sensor is provided on the outside of the mounting base column, a slidingly fitted telescopic push column is provided inside the mounting base column, the telescopic push column is inserted into the mounting base column and slidingly fitted therewith, a fixedly connected ranging piece is provided on the outside of the telescopic push column, the infrared ranging sensor monitors the moving distance of the ranging piece, a spring is sleeved on the outside of the telescopic push column and the mounting base column, one end of the spring is fixedly connected to the mounting base column, and the other end of the spring is fixedly connected to the telescopic push column, a rotatably connected pushing wheel is provided on the telescopic push column, and the pushing wheel is tangent to the inner wall of the grinding belt.

[0007] Preferably, fixedly connected support frames are provided at the four corners inside the bottom bracket, and synchronously rotatable driving columns are provided inside the support frames, and threaded grooves are provided inside the driving columns.

[0008] Preferably, the lifting bracket covers the conveyor, and the four corners below the lifting bracket are provided with fixedly connected threaded columns, which are respectively inserted into the thread grooves inside the driving column and matched with the threads thereof; A symmetrically arranged first fixing frame is fixed on the upper end of the lifting bracket, a second fixing frame is arranged inside the lifting bracket, and array-distributed pressure rods are arranged between the second fixing frames.

[0009] Preferably, the number of the dust collection boxes minus the number of polishing assemblies is 1, the dust collection boxes and the polishing assemblies are fixedly connected to the first fixed frame, a V-shaped air inlet is provided at the lower end of the dust collection box, and the V-shaped air inlet is suspended on the upper surface of the conveyor belt.

[0010] Preferably, the diameter of the upper roller is not greater than 2 / 3 of the diameter of the lower roller, and a grinding belt rotatably connected to the outer sides of the lower roller and the upper roller is provided.

[0011] Preferably, the first bracket is fixedly connected to the first fixed bracket, a first rotating electric cylinder is provided on both sides of the outside of the first bracket, a tail column is provided at the tail end of the first electric cylinder for rotation connection, the tail column is fixedly connected to the first bracket, a front column is provided at the telescopic end of the first electric cylinder for rotation connection, a fixedly connected toggle plate is provided on the front column, and the toggle plate is rotationally connected to the first bracket.

[0012] Preferably, a second electric cylinder is fixedly connected inside the second bracket, and a lifting frame is fixedly connected at the telescopic end of the second electric cylinder. The second electric cylinder pushes the first lifting frame to move up and down.

[0013] Preferably, a second motor is fixedly connected to the upper end surface of the first bracket, a driving wheel is fixedly connected to the driving shaft of the second motor, a driven wheel is fixedly connected to one end of the lower roller, and a driving belt is rotatably connected to the outer side of the driving wheel and the driven wheel. The second motor drives the lower roller, the grinding belt and the upper roller to rotate synchronously.

[0014] Preferably, a first rotating shaft is provided inside the lower roller, the first rotating shaft is inserted into the driven wheel and the lower roller and is rotatably connected thereto, and an eccentric shaft is provided at both ends of the first rotating shaft, the eccentric shaft passes through the first bracket and is fixedly connected to the dial.

[0015] Preferably, the upper roller is installed in the first lifting frame, and a second rotating shaft with a rotation connection is provided inside the upper roller. Both ends of the first lifting frame are provided with slide grooves, and both ends of the second rotating shaft are slidably matched with the slide grooves. Both ends of the outside of the first lifting frame are provided with fixedly connected tension sensors, and the active monitoring end of the tension sensor is provided with a fixedly connected block, which is connected to both ends of the second rotating shaft. Beneficial effects

[0016] The present invention provides a surface treatment device for electrical box processing, which has the following beneficial effects: (1) The surface treatment device for electrical box processing adopts an automatic structural design with a high degree of automation. It can automatically perform surface treatment operations on the metal plates of the electrical box. The entire loading, pressing, and forward polishing process is smooth and stable. It can also be used for metal plates of different thicknesses and a two-way metal plate feeding design. After long-term use, the device can automatically adjust the tension of the grinding belt without manual operation.

[0017] (2) When the surface treatment device for electrical box processing is used, the metal plate of the electrical box is placed on the conveyor belt, the first motor is started to drive the driving column to rotate, thereby driving the lifting bracket, the dust collection box, and the polishing assembly to descend, the conveyor is started to drive the metal plate forward, the pressure rod presses the metal plate, and the lower roller drives the grinding belt to polish the metal plate. The top of the dust collection box is connected to the fan, and the V-shaped air inlet is used to suck away the polishing dust. After the polishing is completed, the metal plate is taken away manually or by a robot.

[0018] (3) When the grinding belt of the surface treatment device for electrical box processing is stretched, the grinding belt tension value received by the tension sensor decreases and exceeds the threshold value, and the distance sensor value exceeds the preset range. At this time, the first electric cylinder drives the first rotating shaft to rotate, and the first rotating shaft drives the lower roller to descend when rotating, and the lower roller drives the grinding belt to be tightened when descending. After the tension sensor value rises and returns to the set threshold range and the distance sensor value returns to the set threshold range, the first electric cylinder stops; When the first electric cylinder pulls the first rotating shaft and the lower roller to the lowest point, the values of the tension sensor and the distance sensor have not yet returned to the set threshold range. The third electric cylinder starts to pull the second lifting frame and the auxiliary adjustment module to rise, and the push wheel will push the grinding belt. After the grinding belt is tightened, the push wheel, the telescopic push column, and the distance piece will retreat. The tension sensor and the distance sensor values will return to the set threshold range and then stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0021] Figure 1 This is a schematic structural diagram of a surface treatment device for electrical box processing according to an embodiment of the present invention; Figure 2 Schematic diagram of the structure of the bottom bracket in an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a lifting bracket according to an embodiment of the present invention; Figure 4 A schematic structural diagram of a polishing assembly according to an embodiment of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure at center A; Figure 6 This is a schematic diagram of the internal structure of the polishing assembly in an embodiment of the present invention; Figure 7 Schematic diagram of the structure of the upper roller in an embodiment of the present invention; Legend: 1. Bottom bracket; 2. Conveyor; 3. Lifting bracket; 4. Dust box; 5. Polishing assembly; 11. Support bracket; 12. First chain; 13. First motor; 21. Support platform; 22. Conveyor belt; 31. Threaded column; 32. Second fixed bracket; 33. First fixed bracket; 41. V-shaped air inlet; 51. First bracket; 52. First electric cylinder; 53. Second bracket; 54. Third electric cylinder; 55. Second motor; 56. Driven pulley; 57. First rotating shaft; 58. Second rotating shaft; 59. Tension sensor; 11 1. Driving column; 321. Pressure rod; 508. Lower roller; 509. Upper roller; 510. Grinding belt; 511. Mounting slot; 512. Tail column; 521. Front column; 522. Toggle plate; 531. Second electric cylinder; 532. Lifting frame; 533. Slide; 541. Second lifting frame; 542. Mounting base column; 543. Distance sensor; 544. Telescopic push column; 545. Spring; 546. Push wheel; 551. Driving wheel; 552. Driving belt; 571. Eccentric shaft; 591. Block; 5441. Distance measuring piece. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 7 As shown, this embodiment provides a surface treatment device for electrical box processing, including a bottom bracket 1, above which a fixedly connected conveyor 2 and a lift bracket 3 are provided.

[0024] Furthermore, the bottom bracket 1 has four fixedly connected support frames 11 at the four corners thereof, and a rotatable driving column 111 is provided inside the support frame 11. The driving column 111 has a threaded groove therein, and a first sprocket is fixedly connected to the lower end of the driving column 111. The first chain 12 is provided around the first sprocket, and the first chain 12 is engaged with the first sprocket. A first motor 13 is fixedly provided inside the bottom bracket 1, a second sprocket is fixedly provided on the driving shaft of the first motor 13, and a third sprocket is fixedly provided on a set of driving columns 111. The third sprocket is engaged with the second sprocket through a second chain. When the first motor 13 is started, the third sprocket, the first sprocket, the first chain 12 and the four sets of driving columns 111 are driven to rotate simultaneously through the second sprocket.

[0025] Furthermore, a support platform 21 and a rotatable conveyor belt 22 are provided inside the conveyor 2. The support platform 21 is placed inside the conveyor belt 22. The upper end surface of the support platform 21 supports the upper surface of the conveyor belt 22. When the conveyor belt 22 is squeezed, the support platform 21 provides horizontal support to prevent the conveyor belt 22 from becoming concave.

[0026] Furthermore, the lifting bracket 3 is H-shaped as a whole.

[0027] Specifically, the lifting bracket 3 covers the conveyor 2, and the four corners below the lifting bracket 3 are each provided with a fixedly connected threaded column 31, which is respectively inserted into the threaded groove inside the driving column 111 and matched with its thread. When the driving column 111 rotates, the threaded column 31 and the lifting bracket 3 are driven to rise and fall synchronously; A symmetrically arranged first fixing frame 33 is fixed to the upper end of the lifting bracket 3. A second fixing frame 32 is provided inside the lifting bracket 3. An array of pressure rods 321 are provided between the second fixing frames 32. Both ends of the pressure rods 321 are rotatably connected to the second fixing frames 32. The number and spacing of the pressure rods 321 can be changed according to actual production. When the lifting bracket 3 is lifted or lowered, it drives the pressing rod 321 to change the distance between the pressing rod 321 and the upper surface of the conveyor belt 22, thereby being suitable for the pressing operation of metal plates with different thicknesses.

[0028] Furthermore, dust collection boxes 4 and polishing components 5 are arranged in an array between the first fixing frames 33 .

[0029] Specifically, the dust collection box 4 and the polishing assembly 5 are arranged alternately, and the number of dust collection boxes 4 minus the number of polishing assemblies 5 = 1. The dust collection box 4 is fixedly connected to the first fixed frame 33. A V-shaped air inlet 41 is provided at the lower end of the dust collection box 4, and the V-shaped air inlet 41 is suspended on the upper surface of the conveyor belt 22.

[0030] Furthermore, the polishing assembly 5 includes a first bracket 51, a rotatable lower roller 508 is provided inside the first bracket 51, and a liftable upper roller 509 is provided above the first bracket 51. The diameter of the upper roller 509 is smaller than the diameter of the lower roller 508, and the diameter of the upper roller 509 is not greater than 2 / 3 of the diameter of the lower roller 508. A grinding belt 510 is rotatably connected to the outer side of the lower roller 508 and the upper roller 509.

[0031] Specifically, the first bracket 51 is in the shape of a door. Both sides of the first bracket 51 are provided with mounting slots 511. The first fixing frame 33 is fixed in the mounting slots 511, thereby fixing the first bracket 51 to the first fixing frame 33. A first electric cylinder 52 is provided on both sides of the first bracket 51. A rotatable tail post 512 is provided at the rear end of the first electric cylinder 52. The tail post 512 is fixedly connected to the first bracket 51. A rotatable front post 521 is provided at the telescopic end of the first electric cylinder 52. A fixedly connected toggle plate 522 is provided on the front post 521. The toggle plate 522 is rotatably connected to the first bracket 51. A second bracket 53 is fixedly connected to the upper end surface of the first bracket 51, and a second electric cylinder 531 is fixedly connected inside the second bracket 53. A lifting frame 532 is fixedly connected to the telescopic end of the second electric cylinder 531, and the second electric cylinder 531 pushes the first lifting frame 532 to move up and down.

[0032] Furthermore, a third electric cylinder 54 is fixedly connected to both sides of the second bracket 53. A second lifting frame 541 is fixedly connected to the telescopic end of the third electric cylinder 54. Auxiliary adjustment modules are provided on both sides of the second lifting frame 541. Specifically, the auxiliary adjustment module includes a mounting base column 542, which is fixedly connected to the second lifting frame 541, an infrared ranging sensor 543 is provided on the outside of the mounting base column 542, and a sliding telescopic push column 544 is provided inside the mounting base column 542. The telescopic push column 544 is inserted into the mounting base column 542 and slides with it. The two are slidably guided by guide columns and guide grooves. A fixedly connected ranging piece 5441 is provided on the outside of the telescopic push column 544. When the telescopic push column 544 moves, the ranging piece 5441 moves synchronously, and the infrared ranging sensor 543 detects The moving distance of the ranging piece 5441, the telescopic push column 544 and the mounting base column 542 are covered with a spring 545 on the outside, one end of the spring 545 is fixedly connected to the mounting base column 542, and the other end of the spring 545 is fixedly connected to the telescopic push column 544, and the telescopic push column 544 is provided with a rotatably connected push wheel 546, and the push wheel 546 is tangent to the inner wall of the grinding belt 510. When the grinding belt 510 is tightened, the push wheel 546 and the telescopic push column 544 are driven to retreat, and the spring 545 is tightened, and the value monitored by the ranging sensor 543 becomes smaller. Conversely, the value monitored by the ranging sensor 543 becomes larger.

[0033] Furthermore, a second motor 55 is fixedly connected to the upper end surface of the first bracket 51. A driving wheel 551 is fixedly connected to the driving shaft of the second motor 55. A driven wheel 56 is fixedly connected to one end of the lower roller 508. A driving belt 552 is rotatably connected to the outer sides of the driving wheel 551 and the driven wheel 56. The second motor 55 drives the lower roller 508, the grinding belt 510, and the upper roller 509 to rotate synchronously. A first rotating shaft 57 is provided inside the lower roller 508, and the first rotating shaft 57 is inserted into the driven wheel 56 and the lower roller 508 and is rotatably connected thereto. An eccentric shaft 571 is provided at both ends of the first rotating shaft 57, and the eccentric shaft 571 passes through the first bracket 51 and is fixedly connected to the dial 522. The first electric cylinder 52 pushes the dial 522 to rotate, driving the eccentric shaft 571 and the first rotating shaft 57 to rotate. When the first rotating shaft 57 rotates, it drives the lower roller 508 to adjust its height. When the height of the lower roller 508 changes, it drives the grinding belt 510 to adjust its tightness.

[0034] Furthermore, the upper roller 509 is installed in the first lifting frame 532, and a second rotating shaft 58 is provided inside the upper roller 509 for rotation. Both ends of the first lifting frame 532 are provided with a slide groove 533, and both ends of the second rotating shaft 58 are slidably matched with the slide groove 533. Both ends of the outside of the first lifting frame 532 are provided with a fixedly connected tension sensor 59, and the active monitoring end of the tension sensor 59 is provided with a fixedly connected block 591, and the block 591 is connected to both ends of the second rotating shaft 58. After the tension of the grinding belt 510 changes, the height of the upper roller 509 changes, and the tension sensor 59 obtains a value.

[0035] Working principle of the present invention: During use, the metal plate of the electrical box is placed on the conveyor belt 22, the first motor 13 is started to drive the driving column 111 to rotate, thereby driving the lifting bracket 3, the dust box 4, and the polishing assembly 5 to descend, the conveyor 2 is started to drive the metal plate forward, the pressure rod 321 presses the metal plate, and the lower roller 508 drives the polishing belt 510 to polish the metal plate. The top of the dust box 4 is connected to the fan, and the V-shaped air inlet 41 sucks away the polishing dust. After polishing is completed, the metal plate is removed manually or by a robot, and the lifting bracket 3 rises to carry out the polishing operation of the next group of metal plates; When the entire device has been used for a long time, the grinding belt 510 will be stretched, and the tension value of the grinding belt 510 received by the tension sensor 59 will decrease and exceed the threshold value. The spring 545 pushes the telescopic push column 544 and the distance measuring piece 5441 forward. The distance value of the distance measuring piece 5441 monitored by the distance measuring sensor 543 exceeds the preset range. At this time, the first electric cylinder 52 starts to pull the dial 522 and the eccentric shaft 571 to rotate, thereby driving the first rotating shaft 57 to rotate. When the first rotating shaft 57 rotates, it drives the lower roller 508 to descend. When the lower roller 508 descends, it tightens the grinding belt 510. After the value of the tension sensor 59 rises back to the set threshold range and the value of the distance measuring sensor 543 returns to the set threshold range, the first electric cylinder 52 stops. When the first electric cylinder 52 pulls the first rotating shaft 57 and the lower roller 508 to rotate to the lowest point, and the values of the tension sensor 59 and the distance sensor 543 have not yet returned to the set threshold range, the third electric cylinder 54 starts to pull the second lifting frame 541 and the auxiliary adjustment module upward, and the pushing wheel 546 pushes the grinding belt 510. After the grinding belt 510 is tightened, the pushing wheel 546, the telescopic push column 544, and the distance piece 5441 retreat. The tension sensor 59 and the distance sensor 543 return to the set threshold range and then stop. When the second lifting frame 541 and the auxiliary adjustment module rise to the highest point and the lower roller 508 rotates to the lowest point, the tension sensor 59 and the distance sensor 543 values cannot be restored to the set threshold range. The device performs an alarm operation to notify the worker to check or replace the grinding belt 510.

[0036] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A surface treatment device for electrical box processing, characterized in that: The bottom bracket (1) comprises a fixedly connected conveyor (2) and a lift bracket (3) which can be lifted and lowered. A dust collection box (4) and a polishing assembly (5) are arranged in an array above the lifting bracket (3), and the dust collection box (4) and the polishing assembly (5) are arranged in a staggered manner; The lifting bracket (3) is internally provided with pressure rods (321) distributed in an array; The polishing assembly (5) comprises a first bracket (51), a rotatable lower roller (508) is provided inside the first bracket (51), the height of the lower roller (508) is adjustable, and a liftable upper roller (509) is provided above the first bracket (51), the diameter of the upper roller (509) being smaller than the diameter of the lower roller (508); A fixedly connected second bracket (53) is provided on the upper end surface of the first bracket (51), a fixedly connected third electric cylinder (54) is provided on both sides of the exterior of the second bracket (53), a fixedly connected second lifting frame (541) is provided at the telescopic end of the third electric cylinder (54), and auxiliary adjustment modules are provided on both sides of the second lifting frame (541); The auxiliary adjustment module comprises a mounting base column (542), the mounting base column (542) being fixedly connected to the second lifting frame (541), an infrared distance measuring sensor (543) being provided on the outer side of the mounting base column (542), a slidingly matched telescopic push column (544) being provided inside the mounting base column (542), the telescopic push column (544) being inserted into the mounting base column (542) and slidingly matched therewith, a fixedly connected distance measuring piece (5441) being provided on the outer side of the telescopic push column (544), the infrared distance measuring sensor (543) monitoring the moving distance of the distance measuring piece (5441), a spring (545) being sleeved on the outer side of the telescopic push column (544) and the mounting base column (542), one end of the spring (545) being fixedly connected to the mounting base column (542), and the other end of the spring (545) being fixedly connected to the telescopic push column (544), and a rotatably connected driving wheel (546) being tangent to the inner wall of the grinding belt (510).

2. The surface treatment device for electrical box processing according to claim 1, characterized in that: The bottom bracket (1) is provided with fixedly connected support frames (11) at the four corners thereof, and the support frames (11) are provided with synchronously rotatable drive columns (111) therein, and the drive columns (111) are provided with threaded grooves therein.

3. The surface treatment device for electrical box processing according to claim 1, characterized in that: The lifting bracket (3) covers the conveyor (2), and the four corners below the lifting bracket (3) are each provided with a fixedly connected threaded column (31), and the threaded column (31) is respectively inserted into the threaded groove inside the driving column (111) and matched with its thread; A symmetrically arranged first fixing frame (33) is fixed to the upper end of the lifting bracket (3), a second fixing frame (32) is provided inside the lifting bracket (3), and array-distributed pressure rods (321) are provided between the second fixing frames (32).

4. The surface treatment device for electrical box processing according to claim 1, characterized in that: The number of the dust collection boxes (4) minus the number of the polishing assemblies (5) = 1. The dust collection boxes (4) and the polishing assemblies (5) are fixedly connected to the first fixed frame (33). A V-shaped air inlet (41) is provided at the lower end of the dust collection box (4), and the V-shaped air inlet (41) is suspended on the upper surface of the conveyor belt (22).

5. The surface treatment device for electrical box processing according to claim 1, characterized in that: The diameter of the upper roller (509) is no greater than 2 / 3 of the diameter of the lower roller (508), and a grinding belt (510) rotatably connected to the outer sides of the lower roller (508) and the upper roller (509) is provided.

6. The surface treatment device for electrical box processing according to claim 1, characterized in that: The first bracket (51) is fixedly connected to the first fixed bracket (33); a rotatable first electric cylinder (52) is provided on both sides of the outside of the first bracket (51); a rotatably connected tail column (512) is provided at the tail end of the first electric cylinder (52); the tail column (512) is fixedly connected to the first bracket (51); a rotatably connected front column (521) is provided at the telescopic end of the first electric cylinder (52); a fixedly connected toggle plate (522) is provided on the front column (521); and the toggle plate (522) is rotatably connected to the first bracket (51).

7. The surface treatment device for electrical box processing according to claim 6, characterized in that: A second electric cylinder (531) is fixedly connected inside the second bracket (53), and a lifting frame (532) is fixedly connected at the telescopic end of the second electric cylinder (531). The second electric cylinder (531) pushes the first lifting frame (532) to move up and down.

8. The surface treatment device for electrical box processing according to claim 7, characterized in that: A second motor (55) is fixedly connected to the upper end surface of the first bracket (51), a driving wheel (551) is fixedly connected to the driving shaft of the second motor (55), a driven wheel (56) is fixedly connected to one end of the lower roller (508), and a driving belt (552) is rotatably connected to the outer sides of the driving wheel (551) and the driven wheel (56), and the second motor (55) drives the lower roller (508), the grinding belt (510), and the upper roller (509) to rotate synchronously.

9. The surface treatment device for electrical box processing according to claim 8, characterized in that: A first rotating shaft (57) is provided inside the lower roller (508) and is inserted into the driven wheel (56) and the lower roller (508) and is rotatably connected thereto. An eccentric shaft (571) is provided at both ends of the first rotating shaft (57). The eccentric shaft (571) passes through the first bracket (51) and is fixedly connected to the dial (522).

10. The surface treatment device for electrical box processing according to claim 9, characterized in that: The upper roller (509) is installed in the first lifting frame (532), and a second rotating shaft (58) is provided inside the upper roller (509) for rotation connection. Both ends of the first lifting frame (532) are provided with a slide groove (533), and both ends of the second rotating shaft (58) are slidably matched with the slide groove (533). Both ends of the outside of the first lifting frame (532) are provided with a fixedly connected tension sensor (59), and the activity monitoring end of the tension sensor (59) is provided with a fixedly connected block (591), and the block (591) is connected to both ends of the second rotating shaft (58).

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