Cutting-back square steel pipe outer wall polishing device for machining

Abstract

The invention belongs to the technical field of grinding machining, and particularly relates to a machining short-section square steel pipe outer wall grinding device which comprises a grinding table, supporting columns are fixedly connected to the two ends of the rear side of the upper end face of the grinding table, a first sliding groove plate is fixedly connected to the upper ends of the supporting columns, and a second sliding groove plate is slidably connected to the inner side of the first sliding groove plate. And a second sliding groove plate is slidably connected to the inner side of the second sliding groove plate, and a connecting plate is fixedly connected to the lower end of the spring damper. In the polishing process of the outer wall of the short-section square steel pipe, chippings attached to the surface of frosted packing paper can be removed in a knocking and sweeping mode; the situation that when the frosted packing paper rubs against the outer wall of the short-section square steel pipe, the frosted packing paper continuously adheres the chippings adhering to the surface to the outer wall of the short-section square steel pipe is avoided; and the short-section square steel pipe can be clamped and positioned, and the stability of the short-section square steel pipe in the grinding process is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polishing processing, in particular to a short square steel pipe outer wall polishing device for mechanical processing. BACKGROUND

[0002] Mechanical processing is a process of changing the shape size or performance of workpieces by mechanical equipment. As a kind of steel pipe, the outer wall of square steel pipe often has burrs and other uneven protrusions during processing. In order to ensure the appearance quality of square steel pipe, polishing device is needed to polish the outer wall.

[0003] The invention patent application with publication number CN112338730B discloses a short square steel pipe outer wall polishing device for mechanical processing. In view of the problem that dead angles are easy to appear during polishing, causing color stratification of the outer wall of the steel pipe, the following scheme is proposed, including a bottom plate, a driving mechanism is arranged on the top outer wall of the bottom plate, one end of the driving mechanism is fixedly connected with a supporting plate, one end of each of two sliding blocks is fixedly connected with a horizontal plate, and one end of the horizontal plate is inserted with a connecting shaft. The two sliding blocks are inwardly slid to extrude and fix the short square steel pipe. The L-shaped clamping plate is driven by the steering motor to complete 180-degree steering, so that the sanding pad paper can cover most of the other side of the four side outer walls of the square steel pipe. The two will only overlap and will not be missed, so that the square steel pipe outer wall can be completely polished without leaving dead angles.

[0004] However, the above technical scheme still has the following disadvantages in actual application:

[0005] When the sanding pad paper rubs against the outer wall of the short square steel pipe, debris will adhere to the surface of the sanding pad paper. Since the sanding pad paper continuously moves back and forth horizontally, the debris adhering to the surface of the sanding pad paper will be adhered back to the outer wall of the short square steel pipe, which affects the appearance quality of the short square steel pipe. Moreover, when the debris repeatedly adheres to the outer wall of the short square steel pipe, it is not conducive to determining the degree of polishing. When the debris generated during polishing is adsorbed by the dust collector, since the surface of the sanding pad paper is rough, the adhesion between the sanding pad paper and the debris is stronger. Therefore, it is not easy to make the debris separate from the surface of the sanding pad paper by negative pressure adsorption, and the debris may still repeatedly adhere to the outer wall of the short square steel pipe.

[0006] Therefore, the application provides a short square steel pipe outer wall polishing device for mechanical processing. SUMMARY

[0007] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the application provides a short square steel pipe outer wall polishing device for mechanical processing.

[0008] The technical scheme adopted by the present application to solve its technical problems is: a short square steel pipe outer wall polishing device for machining, comprising a polishing table, both ends of the upper end surface of the polishing table are fixedly connected with support posts, the upper end of the support post is fixedly connected with a sliding groove plate one, the inner side of the sliding groove plate one is slidably connected with a sliding groove plate two, the inner side of the sliding groove plate two is slidably connected with a sliding groove plate two, the inner side of the sliding groove plate two is slidably connected with a T-shaped block, both sides of the lower end surface of the T-shaped block are fixedly connected with electric push rods one, the piston end of the electric push rod one is fixedly connected with a lifting block, both sides of the lower end surface of the lifting block are fixedly connected with spring dampers, the lower end of the spring damper is fixedly connected with a connecting plate, the lower end of the connecting plate is rotatably provided with an L-shaped plate, the inner side of the L-shaped plate is bonded with a sanding pad, the front end surface of the L-shaped plate is provided with a brush plate, and the L-shaped plate is further provided with an L-shaped track displacement type debris removal mechanism for removing the debris adhered to the sanding pad.

[0009] The L-shaped track displacement type debris removal mechanism comprises a sliding rod fixedly connected to the upper end of the L-shaped plate, the sliding rod is slidably connected with a threaded block, the right end of the threaded block is threadedly connected with a threaded rod one, the front end of the threaded rod one is rotatably provided on the upper end of the L-shaped plate, the lower end surface of the threaded block is fixedly connected with two electric push rods three, the piston ends of the two electric push rods three are fixedly connected with adjusting blocks, and the lower end of the adjusting block is rotatably provided with a brush roller.

[0010] Preferably, both sides of the upper end surface of the polishing table are fixedly connected with support plates, two electric push rods two are fixedly connected to the upper side of the end surface of the two support plates close to each other, and the piston ends of the two electric push rods two are fixedly connected with positioning blocks.

[0011] Preferably, the left end surface of the sliding groove plate one is fixedly connected with a motor three, the output end of the motor three is fixedly connected with a threaded rod three, and the left and right ends of the threaded rod three are rotatably provided on the left and right ends of the sliding groove plate one. The threaded rod three is threadedly connected with the upper end of the sliding groove plate two.

[0012] Preferably, the rear end surface of the sliding groove plate two is fixedly connected with a motor one, the output end of the motor one is fixedly connected with a threaded rod two, the front and rear ends of the threaded rod two are rotatably provided on the front and rear ends of the sliding groove plate two, and the threaded rod two is threadedly connected with the upper end of the T-shaped block.

[0013] Preferably, the middle part of the lifting block is slidably connected with a beating rod, the rear upper end of the lifting block is fixedly connected with a motor four, the output end of the motor four is fixedly connected with a crank, the upper end of the crank is rotatably provided on the upper end of the lifting block, the lower end of the crank is rotatably provided with a rectangular block, the sliding groove rod is inserted into the rectangular block and slidably connected therewith, and the middle part of the lower end surface of the sliding groove rod is fixedly connected with the upper end of the beating rod.

[0014] Preferably, the upper end of the L-shaped plate is fixedly connected with a motor five, and the output end of the motor five is fixedly connected with the front end of the threaded rod one.

[0015] Preferably, the left end surface of the adjusting block is fixedly connected with a sixth motor, and the output end of the sixth motor is fixedly connected with the left end of the brush roller.

[0016] Preferably, the lower side of the right end surface of the connecting plate is fixedly connected with a second motor, and the output end of the second motor is fixedly connected with the upper end of the L-shaped plate.

[0017] Preferably, the upper end surface of the polishing table is placed with a collection box.

[0018] Preferably, the lower side of the rear end surface of the polishing table is fixedly connected with a dust collection box, one side of the rear end of the dust collection box is provided with an air extractor, the upper end of the dust collection box is communicated with a dust suction pipe, both ends of the front side of the dust suction pipe are penetrated through and fixedly connected to the upper end of the supporting plate, and the front end of the dust suction pipe is provided with a dust suction cover.

[0019] The beneficial effects of the present application are as follows:

[0020] 1. The short square steel pipe outer wall polishing device for machining, by means of the L-shaped trajectory displacement type debris removing mechanism, the adhered debris on the surface of the sanding pad can be removed by knocking and sweeping during the polishing process of the short square steel pipe outer wall, so that the situation that the sanding pad adheres the surface adhered debris back to the short square steel pipe outer wall when the sanding pad rubs against the short square steel pipe outer wall is avoided, the appearance quality of the short square steel pipe is improved, and personnel can conveniently judge the polishing degree.

[0021] 2. The short square steel pipe outer wall polishing device for machining, the upper edge of the short square steel pipe to be polished is placed at the positioning block on any one side, then the electric push rod two on both sides is started to drive the positioning blocks on both sides to approach each other at the same time, so that the positioning blocks on both sides can clamp the side of the short square steel pipe, so that the short square steel pipe can be clamped and positioned, and the stability of the short square steel pipe during the polishing process is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings.

[0023] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0024] Figure 2 is a schematic view of a local three-dimensional structure of the chute plate;

[0025] Figure 3 is Figure 2 is a local enlarged view of A in FIG. 5;

[0026] Figure 4 is a schematic view of the rear view of the three-dimensional structure of the present application;

[0027] Figure 5 is Figure 4 is a local enlarged view of B in

[0028] Figure 6 is a local perspective view of the sanding pad;

[0029] Figure 7 is a local perspective view of the T-shaped block;

[0030] Figure 8 is a local perspective view of the L-shaped plate;

[0031] Figure 9 is a local perspective view of the positioning block.

[0032] In the figure: 1, polishing table; 2, dust suction pipe; 3, dust suction cover; 4, support column; 5, sliding groove plate one; 6, sliding groove plate two; 7, collection box; 8, motor one; 9, T-shaped block; 10, electric push rod one; 11, electric push rod two; 12, positioning block; 13, motor two; 14, L-shaped plate; 15, brush plate; 16, threaded block; 17, electric push rod three; 18, adjusting block; 19, air extractor; 20, sanding pad; 21, brush roller; 22, motor three; 23, threaded rod one; 24, sliding rod; 25, connecting plate; 26, spring damper; 27, beating rod; 28, lifting block; 29, motor four; 30, crank; 31, rectangular block; 32, sliding groove rod; 33, motor five; 34, motor six; 35, dust collection box; 36, threaded rod two; 37, threaded rod three; 38, support plate. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-9The application provides a technical scheme: a short square steel pipe outer wall polishing device for machining, which comprises a polishing table 1, both ends of the upper end face of the polishing table 1 are fixedly connected with support posts 4, the upper end of each support post 4 is fixedly connected with a sliding groove plate one 5, the inner side of the sliding groove plate one 5 is slidably connected with a sliding groove plate two 6, the inner side of the sliding groove plate two 6 is slidably connected with a sliding groove plate two 6, the inner side of the sliding groove plate two 6 is slidably connected with a T-shaped block 9, the lower end face of both sides of the T-shaped block 9 is fixedly connected with an electric push rod one 10, the piston end of the electric push rod one 10 is fixedly connected with a lifting block 28, the lower end face of both sides of the lifting block 28 is fixedly connected with a spring damper 26, the lower end of the spring damper 26 is fixedly connected with a connecting plate 25, the lower end of the connecting plate 25 is rotatably provided with an L-shaped plate 14, the inner side of the L-shaped plate 14 is bonded with a sanding pad paper 20, the front end face of the L-shaped plate 14 is provided with a brush plate 15, and the L-shaped plate 14 is further provided with an L-shaped track displacement type scrap removing mechanism for removing the scraps adhered to the sanding pad paper 20.

[0035] The L-shaped track displacement type scrap removing mechanism comprises a sliding rod 24 fixedly connected to the upper end of the L-shaped plate 14, the sliding rod 24 is slidably connected with a threaded block 16, the right end of the threaded block 16 is threadedly connected with a threaded rod one 23, the front end of the threaded rod one 23 is rotatably arranged on the upper end of the L-shaped plate 14, the lower end face of the threaded block 16 is fixedly connected with two electric push rods three 17, the piston end of each electric push rod three 17 is fixedly connected with an adjusting block 18, and the lower end of the adjusting block 18 is rotatably provided with a brush roller 21.

[0036] As shown in the embodiment, Figure 1 and Figure 9 the middle parts of the upper end face of both sides of the polishing table 1 are fixedly connected with support plates 38, the upper sides of the end faces of the two support plates 38 close to each other are fixedly connected with two electric push rods two 11, and the piston end of each electric push rod two 11 is fixedly connected with a positioning block 12.

[0037] Specifically, the upper edge of the short square steel pipe to be polished is placed at the positioning block 12 on any one side, then the electric push rods two 11 on both sides are started to drive the positioning blocks 12 on both sides to approach each other at the same time, so that the positioning blocks 12 on both sides clamp the side surface of the short square steel pipe, thereby clamping and positioning the short square steel pipe, and the stability of the short square steel pipe in the polishing process is ensured.

[0038] As shown in the embodiment, Figures 1-8 the left end face of the sliding groove plate one 5 is fixedly connected with a motor three 22, the output end of the motor three 22 is fixedly connected with a threaded rod three 37, the left and right ends of the threaded rod three 37 are rotatably arranged on the left and right ends of the sliding groove plate one 5, and the threaded rod three 37 is threadedly connected with the upper end of the sliding groove plate two 6.

[0039] The rear end surface of the second sliding groove plate 6 is fixedly connected with a motor 8, the output end of the motor 8 is fixedly connected with a threaded rod 36, the front and rear ends of the threaded rod 36 are rotatably arranged on the front and rear ends of the second sliding groove plate 6, and the threaded rod 36 is threadedly connected with the upper end of the T-shaped block 9;

[0040] The middle part of the lifting block 28 is slidably connected with a beating rod 27, the upper end of the rear side of the lifting block 28 is fixedly connected with a motor 29, the output end of the motor 29 is fixedly connected with a crank 30, the upper end of the crank 30 is rotatably arranged on the upper end of the lifting block 28, the lower end of the crank 30 is rotatably arranged with a rectangular block 31, the rectangular block 31 is inserted with a sliding groove rod 32 and is slidably connected with the sliding groove rod 32, and the middle part of the lower end surface of the sliding groove rod 32 is fixedly connected with the upper end of the beating rod 27;

[0041] The upper end of the L-shaped plate 14 is fixedly connected with a motor 33, and the output end of the motor 33 is fixedly connected with the front end of the threaded rod 23;

[0042] The lower side of the left end surface of the adjusting block 18 is fixedly connected with a motor 34, and the output end of the motor 34 is fixedly connected with the left end of the brush roller 21;

[0043] The lower side of the right end surface of the connecting plate 25 is fixedly connected with a motor 13, and the output end of the motor 13 is fixedly connected with the upper end of the L-shaped plate 14;

[0044] The upper end surface of the polishing table 1 is placed with a collecting box 7;

[0045] The lower side of the rear end surface of the polishing table 1 is fixedly connected with a dust collecting box 35, one side of the rear end of the dust collecting box 35 is provided with an air extractor 19, the upper end of the dust collecting box 35 is communicated with a dust suction pipe 2, both ends of the front side of the dust suction pipe 2 are penetratingly and fixedly connected with the upper end of a supporting plate 38, and the front end of the dust suction pipe 2 is provided with a dust suction hood 3;

[0046] Specifically, in the prior art, when the short-cut square steel pipe outer wall polishing device is in use, the sanding pad paper 20 is usually used to polish the outer wall of the short-cut square steel pipe, and in the polishing process, the sanding pad paper 20 is attached to the outer wall of the short-cut square steel pipe and moves transversely to realize the friction polishing of the outer wall of the short-cut square steel pipe. However, when the sanding pad paper 20 contacts the outer wall of the short-cut square steel pipe, the surface of the sanding pad paper 20 will adhere to the debris, and since the sanding pad paper 20 continuously moves transversely, the debris adhered to the surface of the sanding pad paper 20 will be adhered back to the outer wall of the short-cut square steel pipe, which will affect the appearance quality of the short-cut square steel pipe, and when the debris repeatedly adheres to the outer wall of the short-cut square steel pipe, it is not conducive to the judgment of the polishing degree. In the prior art, the negative pressure suction method is usually used to adsorb the debris generated during polishing. However, since the surface of the sanding pad paper 20 is rough, the adhesion between the sanding pad paper 20 and the debris is stronger, and the negative pressure adsorption method is not easy to make the debris separate from the surface of the sanding pad paper 20;

[0047] Therefore, when in use, after the short cut square steel pipe is positioned, the adjustment of the orientation of the L-shaped plate 14 is realized by rotating the threaded rod three 37 driven by the motor three 22, rotating the threaded rod two 36 driven by the motor one 8, and lifting the connecting plate 25 driven by the electric push rod one 10, so that the included angle of the L-shaped plate 14 is matched with any corner of the outer wall of the short cut square steel pipe. Since the sanding pad paper 20 is adhered to the inner side of the L-shaped plate 14, the sanding pad paper 20 contacts two surfaces of the outer wall of the short cut square steel pipe at this time, and the length of the sanding pad paper 20 is greater than the width of the short cut square steel pipe, so that no dead angle of sanding occurs. Then, the L-shaped plate 14 drives the sanding pad paper 20 to move transversely and reciprocally by starting the motor three 22, so that the outer wall of the short cut square steel pipe can be sanded, and the angle of the sanding pad paper 20 can be adjusted by rotating the L-shaped plate 14 driven by the motor two 13, so that the four surfaces of the outer wall of the short cut square steel pipe can be sanded. When the L-shaped plate 14 moves in one direction, the sanding pad paper 20 changes from the state of being matched with the outer wall of the short cut square steel pipe to the state of being separated from the outer wall of the short cut square steel pipe. Then, the L-shaped plate 14 is driven to move reversely, so that the reciprocating movement of the sanding pad paper 20 is realized. At the same time, the dust extractor 19 can be started to suck the debris generated in the sanding process into the dust collecting box 35 by the dust suction cover 3.

[0048] When the sanding pad paper 20 is separated from the outer wall of the short cut square steel pipe, the motor five 33 and the motor six 34 are started at the same time. The threaded rod one 23 is rotated by the motor five 33, so that the threaded block 16 moves forward. At the same time, the brush roller 21 is rotated under the action of the motor six 34. The bristles of the brush roller 21 contact the sanding pad paper 20 to sweep the debris adhered to the sanding pad paper 20. When the threaded block 16 moves to the most forward end, the adjusting block 18 can be lowered by the electric push rod three 17, so that the brush roller 21 is lowered to sweep the debris adhered to the sanding pad paper 20 on the other side. The swept debris can be sucked into the dust collecting box 35. At the same time, the motor four 29 can be started to rotate the crank 30, so that the rectangular block 31 continuously rotates and slides in the sliding groove rod 32. The beating rod 27 reciprocally slides on the lifting block 28, so that the beating rod 27 constantly knocks the connecting plate 25. The spring damper 26 is deformed, and the L-shaped plate 14 vibrates, so that the sanding pad paper 20 is shaken to further intensify the falling of the debris. Part of the debris that is not adsorbed will fall into the collecting box 7 under the action of gravity for collection.

[0049] When the polishing work is finished, the outer wall of the short square steel pipe can still be attached with debris, the angle of the L-shaped plate 14 can be adjusted by the motor 2 13 to make the brush plate 15 contact with the outer wall of the short square steel pipe, then the brush plate 15 is driven to move transversely to clean the debris attached to the outer wall of the short square steel pipe by the brush plate 15, that is, the cleaning work of the debris on the outer wall of the short square steel pipe can be realized; thus, in the polishing process of the outer wall of the short square steel pipe, the debris attached to the surface of the sanding pad 20 can be removed by knocking and cleaning, so that the sanding pad 20 will not continue to attach the debris on the surface to the outer wall of the short square steel pipe when the sanding pad 20 rubs against the outer wall of the short square steel pipe, the appearance quality of the short square steel pipe is improved, and it is convenient for personnel to judge the polishing degree.

[0050] Working principle: the upper edge of the short cut square steel pipe to be polished is placed at the positioning block 12 on one side, and then the electric push rod 11 on both sides is started to drive the positioning block 12 on both sides to approach each other, so that the positioning block 12 on both sides can clamp the side of the short cut square steel pipe, thereby clamping and positioning the short cut square steel pipe, ensuring the stability of the short cut square steel pipe during polishing. After positioning the short cut square steel pipe, the threaded rod 37 is rotated by the motor 22, the threaded rod 36 is rotated by the motor 8, and the connecting plate 25 is lifted by the electric push rod 10 to adjust the orientation of the L-shaped plate 14, so that the included angle of the L-shaped plate 14 is matched with any corner of the outer wall of the short cut square steel pipe. Since the sanding pad paper 20 is adhered to the inner side of the L-shaped plate 14, the sanding pad paper 20 contacts the outer wall of the short cut square steel pipe at two surfaces at this time, and the length of the sanding pad paper 20 is greater than the width of the short cut square steel pipe, so there is no dead angle during polishing. Then, the L-shaped plate 14 is driven to move transversely by starting the motor 22, so that the sanding pad paper 20 can be polished on the outer wall of the short cut square steel pipe. The angle of the sanding pad paper 20 can be adjusted by rotating the L-shaped plate 14 driven by the motor 13, so that the four surfaces of the short cut square steel pipe can be polished. When the L-shaped plate 14 moves in one direction, the sanding pad paper 20 changes from the state of being in contact with the outer wall of the short cut square steel pipe to the state of being separated from the outer wall of the short cut square steel pipe. Then, the L-shaped plate 14 is driven to move in the opposite direction, so that the sanding pad paper 20 moves back and forth. At the same time, the dust collector 19 is turned on, and the dust generated during polishing is sucked into the dust collection box 35 through the dust suction cover 3. When the sanding pad paper 20 is separated from the outer wall of the short cut square steel pipe, the motor 33 and the motor 34 are started at the same time. The threaded rod 23 is rotated by the motor 33 to drive the threaded block 16 to move forward, and at the same time, the brush roller 21 is rotated under the action of the motor 34. The bristles of the brush roller 21 contact the sanding pad paper 20 to sweep off the debris adhered to the sanding pad paper 20. When the threaded block 16 moves to the most forward end, the adjusting block 18 is lowered by the electric push rod 17 to lower the brush roller 21, so that the debris adhered to the sanding pad paper 20 on the other side is swept off. The swept-off debris can be sucked into the dust collection box 35. At the same time, the motor 29 is turned on to drive the crank 30 to rotate, and the crank 30 drives the rectangular block 31 to continuously rotate and slide in the sliding groove rod 32, so that the striking rod 27 slides back and forth on the lifting block 28 to continuously knock the connecting plate 25, so that the spring damper 26 is deformed, and the L-shaped plate 14 vibrates, so that the sanding pad paper 20 is shaken to further increase the falling of the debris. Part of the debris that is not adsorbed will fall into the collection box 7 under the action of gravity.When the grinding work is finished, the outer wall of the short square steel pipe can still be attached with debris, the angle of the L-shaped plate 14 can be adjusted by the motor 2 13 to make the brush plate 15 contact with the outer wall of the short square steel pipe, then the brush plate 15 is driven to move horizontally to clean the debris attached to the outer wall of the short square steel pipe by the brush plate 15, so that the cleaning work of the debris on the outer wall of the short square steel pipe is realized; thus, in the grinding process of the outer wall of the short square steel pipe, the debris attached to the surface of the sanding pad 20 can be removed by knocking and cleaning, so that the situation that the sanding pad 20 will continue to adhere the debris attached to the surface to the outer wall of the short square steel pipe when the sanding pad 20 rubs against the outer wall of the short square steel pipe is avoided, the appearance quality of the short square steel pipe is improved, and it is convenient for personnel to judge the grinding degree.

[0051] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for grinding the outer wall of a short square steel pipe for machining, comprising a grinding table (1), characterized in that: The rear ends of the upper end surface of the grinding table (1) are fixedly connected to pillars (4), the upper ends of the pillars (4) are fixedly connected to a slide plate 1 (5), the inner side of the slide plate 1 (5) is slidably connected to a slide plate 2 (6), the inner side of the slide plate 2 (6) is slidably connected to a slide plate 2 (6), the inner side of the slide plate 2 (6) is slidably connected to a T-shaped block (9), the lower end surfaces of the T-shaped block (9) are fixedly connected to an electric push rod 1 (10), and the piston end of the electric push rod 1 (10) is fixedly connected to a lifting block (28). Both sides of the lower end surface of the lifting block (28) are fixedly connected to spring dampers (26), the lower end of the spring damper (26) is fixedly connected to a connecting plate (25), the lower end of the connecting plate (25) is rotatably provided with an L-shaped plate (14), the inner side of the L-shaped plate (14) is bonded with a frosting pad (20), the front end surface of the L-shaped plate (14) is provided with a brush plate (15), and the L-shaped plate (14) is also provided with an L-shaped track displacement type debris removal mechanism for removing debris adhered to the frosting pad (20); The L-shaped track displacement debris removal mechanism includes a slide rod (24) fixedly connected to the upper end of the L-shaped plate (14), the slide rod (24) is slidably connected to a threaded block (16), the right end of the threaded block (16) is threadedly connected to a threaded rod 1 (23), the front end of the threaded rod 1 (23) is rotatably arranged on the upper end of the L-shaped plate (14), the lower end surface of the threaded block (16) is fixedly connected to two electric push rods 3 (17), the piston ends of the two electric push rods 3 (17) are fixedly connected to an adjustment block (18), and the lower end of the adjustment block (18) is rotatably provided with a brush roller (21).

2. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The middle parts of both sides of the upper end surface of the grinding table (1) are fixedly connected with support plates (38), the upper sides of the end surfaces of the two support plates (38) close to each other are fixedly connected with two electric push rods (11), and the piston ends of the two electric push rods (11) are fixedly connected with positioning blocks (12).

3. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The left end face of the chute plate 1 (5) is fixedly connected to the motor 3 (22), the output end of the motor 3 (22) is fixedly connected to the threaded rod 3 (37), the left and right ends of the threaded rod 3 (37) are rotatably arranged on the left and right ends of the chute plate 1 (5), and the threaded rod 3 (37) is threadedly connected to the upper end of the chute plate 2 (6).

4. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The rear end surface of the second chute plate (6) is fixedly connected to the first motor (8), and the output end of the first motor (8) is fixedly connected to the second threaded rod (36). The front and rear ends of the second threaded rod (36) are both rotatably arranged on the front and rear ends of the second chute plate (6), and the second threaded rod (36) is threadedly connected to the upper end of the T-block (9).

5. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The middle part of the lifting block (28) is slidably connected to a striking rod (27), the upper end of the rear side of the lifting block (28) is fixedly connected to a motor four (29), the output end of the motor four (29) is fixedly connected to a crank (30), the upper end of the crank (30) is rotatably set on the upper end of the lifting block (28), and the lower end of the crank (30) is rotatably set with a rectangular block (31), the rectangular block (31) is inserted with a slide rod (32) and slidably connected thereto, and the middle part of the lower end surface of the slide rod (32) is fixedly connected to the upper end of the striking rod (27).

6. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The upper end of the L-shaped plate (14) is fixedly connected to the motor five (33), and the output end of the motor five (33) is fixedly connected to the front end of the threaded rod one (23).

7. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The lower side of the left end surface of the regulating block (18) is fixedly connected to a motor six (34), and the output end of the motor six (34) is fixedly connected to the left end of the brush roller (21).

8. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: The lower side of the right end surface of the connecting plate (25) is fixedly connected to the second motor (13), and the output end of the second motor (13) is fixedly connected to the upper end of the L-shaped plate (14).

9. The outer wall grinding device for a short square steel pipe for machining according to claim 1, characterized in that: A collection box (7) is placed on the upper end surface of the polishing table (1).

10. The outer wall grinding device for a short square steel pipe for machining according to claim 2, characterized in that: A dust collecting box (35) is fixedly connected to the lower side of the rear end surface of the polishing table (1), an exhaust fan (19) is provided on one side of the rear end of the dust collecting box (35), the upper end of the dust collecting box (35) is connected to a dust suction pipe (2), both ends of the front side of the dust suction pipe (2) pass through and are fixedly connected to the upper end of the support plate (38), and a dust suction cover (3) is provided at the front end of the dust suction pipe (2).

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