Deburring device used before plate bending

Abstract

The utility model discloses a deburring device used before plate bending. The device comprises a frame, a material moving and clamping device, a grinding device and a side pushing device, the frame is provided with a transversely-through groove, the material moving and clamping device is installed in the groove, platform plates are installed in a front area and a rear area which are formed by dividing the frame through the groove, the grinding device is longitudinally installed at the end of the frame, and the side pushing device is longitudinally installed in the middle of the frame. The material moving and clamping device comprises a material moving guide rail, a clamp mechanism, a material moving synchronous belt, a material moving synchronous belt wheel used in cooperation with the material moving synchronous belt and a material moving driving motor, the grinding device comprises a first dust collection grinding head, a second dust collection grinding head and a third dust collection grinding head, and the first dust collection grinding head and the third dust collection grinding head grind the long edges of the two sides of a plate. The second dust collection grinding head grinds the short edges of the two sides of the plate, and the side pushing device is used for pushing the ground plate to the frame leaning edge and is matched with the pressing air cylinder to fix the plate. The plate polishing device is suitable for plates of different sizes and high in polishing efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to sheet material burr removing technical field, concretely relates to a sheet material burr removing device before bending. BACKGROUND

[0002] The sheet material needs to remove the burr around the sheet material before bending treatment. The traditional polishing mode is artificial polishing, in order to facilitate the polishing of the sheet material, people design a device specially used for burr polishing of the sheet material, and the polishing device is usually fixed on the workboard, and the distance between the polishing devices needs to be manually set for each size of sheet material, and the feeding and discharging need to be manually carried, which is time-consuming and laborious. UTILITY MODEL CONTENTS

[0003] The utility model aims at the deficiency of prior art, provides a sheet material burr removing device before bending for different sizes of sheet material, which is convenient for feeding and discharging.

[0004] In order to achieve the above object, the utility model adopts the technical scheme of a sheet material burr removing device before bending, characterized by comprising a frame, a material moving and clamping device, a polishing device and a side pushing device, the frame is provided with a transversely penetrating recess, the material moving and clamping device is installed in the recess, the frame is divided into front and rear regions by the recess and installs a platform plate, the polishing device is longitudinally installed at the end of the frame, and the side pushing device is longitudinally installed in the middle of the frame.

[0005] The material moving and clamping device comprises a material moving guide rail, one end of the material moving guide rail is provided with a material moving motor mounting seat, the material moving motor mounting seat is provided with a material moving drive motor, the output end of the material moving motor is connected with a first material moving synchronous pulley, the other end of the material moving guide rail is provided with a material moving synchronous pulley mounting seat, the material moving synchronous pulley mounting seat is provided with a second material moving synchronous pulley, and the material moving synchronous belt is arranged to connect the first material moving synchronous pulley and the second material moving synchronous pulley; a clamp mechanism is arranged, the clamp mechanism comprises a clamp sliding block mounting seat, the bottom of the clamp sliding block mounting seat is provided with a clamp sliding block corresponding to the sliding of the material moving guide rail, the bottom of the clamp sliding block mounting seat is provided with a material moving synchronous belt connecting plate fixedly connected with the material moving synchronous belt, the clamp sliding block mounting seat is vertically upwardly provided with two L-shaped supports arranged in parallel, the middle of the L-shaped support is provided with a clamp air cylinder mounting seat, the clamp air cylinder mounting seat is obliquely provided with a clamp air cylinder, the clamp air cylinder mounting seat is vertically upwardly provided with a connecting rod mechanism, the connecting rod mechanism is respectively connected to the clamp rotating plate and the clamp air cylinder and controls the rotation of the clamp rotating plate through the clamp air cylinder, and the upper portion of the L-shaped support is provided with a clamp buffer pad.

[0006] The polishing device comprises a first gantry and a second gantry, one end of the first gantry is connected with a first driving motor, the output end of the first driving motor is connected with a first synchronous pulley, the other end of the first gantry is connected with a second synchronous pulley mounting plate, the second synchronous pulley mounting plate is connected with a second synchronous pulley, a first synchronous belt is arranged to connect the first synchronous pulley and the second synchronous pulley, one side of the first synchronous belt is connected with a first synchronous belt connecting plate, the opposite side of the first synchronous belt is connected with a third synchronous belt connecting plate, the first synchronous belt connecting plate is connected with a first grinding head cylinder vertically downward, the first grinding head cylinder is connected with a first dust absorption grinding head vertically downward, the third synchronous belt connecting plate is connected with a third grinding head cylinder vertically downward, the third grinding head cylinder is connected with a third dust absorption grinding head vertically downward; one end of the second gantry is connected with a second driving motor, the output end of the second driving motor is connected with a third synchronous pulley, the other end of the second gantry is connected with a fourth synchronous pulley mounting plate, the fourth synchronous pulley mounting plate is connected with a fourth synchronous pulley, a second synchronous belt is arranged to connect the third synchronous pulley and the fourth synchronous pulley, the second synchronous belt is connected with a second synchronous belt connecting plate, the second synchronous belt connecting plate is connected with a second grinding head cylinder vertically downward, the second grinding head cylinder is connected with a second dust absorption grinding head vertically downward;

[0007] The side pushing device comprises a side pushing frame, both ends of the side pushing frame are fixed on the frame, the upper end of the side pushing frame is installed with a side pushing guide rail, one end of the side pushing guide rail is provided with a side pushing motor mounting plate, the side pushing motor mounting plate is installed with a side pushing driving motor, the output end of the side pushing driving motor is installed with a first side pushing synchronous pulley vertically downward, the other end of the side pushing guide rail is provided with a side pushing synchronous pulley mounting seat, the side pushing synchronous pulley mounting seat is installed with a second side pushing synchronous pulley, a side pushing synchronous belt is arranged to connect the first side pushing synchronous pulley and the second side pushing synchronous pulley, a sliding mounting seat is arranged, the bottom of the sliding mounting seat is provided with a side pushing sliding block sliding on the side pushing sliding rail, the bottom of the sliding mounting seat is connected with a side pushing synchronous belt connecting plate, the side pushing synchronous belt connecting plate is connected with the side pushing synchronous belt, the sliding mounting seat is installed with a push plate connecting plate vertically downward, the push plate connecting plate is connected with a side pushing plate vertically.

[0008] Preferably, the connecting rod mechanism comprises a connecting rod base, a first connecting rod pair, a second connecting rod pair, and a rear connecting rod, the lower end of the first connecting rod pair is connected with a second pin shaft, the second pin shaft is connected to the connecting rod base, the lower end of the second connecting rod pair is connected with a third pin shaft, the third pin shaft is connected to the connecting rod base, the middle of the first connecting rod pair is connected with a first pin shaft, the first pin shaft is connected to the cylinder joint of the clamp cylinder through the rear connecting rod, and the upper ends of the first connecting rod pair and the second connecting rod pair are both pinned to the clamp rotating plate.

[0009] Preferably, the first connecting rod pair and the second connecting rod pair are of the same length and the distance between the end heads of the first connecting rod pair and the second connecting rod pair is the same. It needs to be further explained that a parallelogram connecting rod is formed by the first connecting rod pair, the second connecting rod pair, the second pin shaft, the third pin shaft and the clamp turning plate, so that the clamp turning plate always maintains parallel with the clamp buffer pad during the rotation of the clamp cylinder.

[0010] Preferably, the first gantry is vertically downwardly provided with two symmetrically arranged first pressing plate cylinders, and the end heads of the first pressing plate cylinders are each provided with a first pressing plate; and the second gantry is vertically downwardly provided with two symmetrically arranged second pressing plate cylinders, and the end heads of the second pressing plate cylinders are each provided with a second pressing plate.

[0011] Preferably, the lower part of the first gantry and the second gantry is provided with a polishing platform plate corresponding to the position of the frame, the polishing platform plate is provided with four first polishing pads corresponding to the positions directly below the first pressing plate and the second pressing plate, and the polishing platform plate is provided with two second polishing pads corresponding to the positions directly below the first dust absorption grinding head and the third dust absorption grinding head.

[0012] Preferably, the tail end side of the frame is provided with a pressing cylinder seat, the pressing cylinder seat is provided with a pressing cylinder, the pressing cylinder is vertically downwardly provided with an upper pressing block, and the platform plate is provided with a lower pressing block corresponding to the position of the upper pressing block. It needs to be further explained that since the plate material needs to enter the bending process after the deburring polishing process is completed, the device for carrying out the bending process is also provided with a bending clamp, and the plate material after polishing is fixed on one side of the frame through the cooperation of the pressing cylinder and the side pushing plate, so as to facilitate the clamping of the bending clamp.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model discloses a deburring polishing device for plate material, which comprises a frame, a first gantry, a second gantry, a first dust absorption grinding head, a second dust absorption grinding head, a clamp mechanism, a side pushing device and a pressing cylinder.

[0015] 2. The side pushing device pushes the plate material after deburring to one side of the frame and fixes the plate material on one side of the frame through the cooperation of the pressing cylinder, so as to facilitate the clamping of the clamp mechanism of the subsequent bending device, realize automation in the whole process, greatly improve the polishing efficiency, and link the processes before and after plate material polishing smoothly.

[0016] 3. The polishing position of the utility model is concentrated on four outer edges of the plate material, which is different from the market whole plate polishing equipment. The device does not damage the original surface process of the plate material, and guarantees the integrity of the upper and lower surfaces of the plate material. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall isometric view of the present application.

[0018] Figure 2 is the side view of the present application.

[0019] Figure 3 is the isometric view of the material moving device in the present application.

[0020] Figure 4 is the first isometric view of the clamp mechanism in the present application.

[0021] Figure 5 is the second isometric view of the clamp mechanism in the present application.

[0022] Figure 6 is the isometric view of the polishing device in the present application.

[0023] Figure 7 is the side view of the polishing device in the present application.

[0024] Figure 8 is the isometric view of the side pushing device in the present application.

[0025] Figure 9 is the isometric view of the material pressing cylinder in the present application.

[0026] 10-frame, 11-removal device, 12-polishing device, 13-side push device, 14-platform plate, 15-groove, 16-removal motor mounting seat, 17-removal drive motor, 18-first removal synchronous pulley, 19-clamp mechanism, 20-removal synchronous belt, 21-removal guide rail, 22-removal synchronous pulley mounting seat, 23-second removal synchronous pulley, 24-L-shaped support, 25-clamp sliding block, 26-clamp sliding block mounting seat, 27-clamp cylinder mounting seat, 28-linkage mechanism, 29-clamp rotating plate, 30-clamp cylinder, 31-linkage base, 32-first pin shaft, 33-second pin shaft, 34-third pin shaft, 35-cylinder joint, 36-rear linkage, 37-first linkage pair, 38-second linkage pair, 39-first drive motor, 40-first synchronous pulley, 41-second synchronous pulley, 42-first synchronous belt, 43-second drive motor, 44-third synchronous pulley, 45-fourth synchronous pulley, 46-second synchronous pulley mounting plate, 47-fourth synchronous pulley mounting plate, 48-first synchronous belt connecting plate, 49-third synchronous belt connecting plate, 50-first gantry, 51-second gantry, 52-second synchronous belt connecting plate, 53-second synchronous belt, 54-polishing platform plate, 55-first pressing plate cylinder, 56-second polishing gasket, 57-first pressing plate, 58-first polishing gasket, 59-second pressing plate cylinder, 60-second pressing plate, 61-first grinding head cylinder, 62-first dust collection grinding head, 63-second grinding head cylinder, 64-second dust collection grinding head, 65-third grinding head cylinder, 66-third dust collection grinding head, 67-side push motor mounting plate, 68-side push drive motor, 69-first side push synchronous pulley, 70-side push frame, 71-side push synchronous belt, 72-sliding mounting seat, 73-side push synchronous belt connecting plate, 74-side push sliding block, 75-side push plate, 76-second side push synchronous pulley, 77-push plate connecting plate, 78-side push synchronous pulley mounting seat, 79-pressing cylinder seat, 80-pressing cylinder, 81-upper pressing block, 82-lower pressing block. DETAILED DESCRIPTION

[0027] The present application will be further clarified by the following examples, which should be considered as merely illustrative and not limiting of the scope of the application.

[0028] As Figures 1-2The deburring device for sheet metal bending shown includes a frame 10, a material transfer and clamping device 11, a grinding device 12, and a side-pushing device 13. The frame 10 has a transverse through groove 15, in which the material transfer and clamping device 11 is installed. The front and rear areas of the frame 10, separated by the groove 15, are equipped with platform plates 14. The grinding device 12 is installed longitudinally at the end of the frame 10, and the side-pushing device 13 is installed longitudinally in the middle of the frame 10.

[0029] like Figure 3 As shown, the material transfer device 11 includes a material transfer guide rail 21. A material transfer motor mounting base 16 is installed at one end of the material transfer guide rail 21. A material transfer drive motor 17 is installed on the material transfer motor mounting base 16. The output end of the material transfer motor is connected to a first material transfer synchronous pulley 18. A material transfer synchronous pulley mounting base 22 is installed at the other end of the material transfer guide rail 21. A second material transfer synchronous pulley 23 is installed on the material transfer synchronous pulley mounting base 22. A material transfer synchronous belt 20 is provided to connect the first material transfer synchronous pulley 18 and the second material transfer synchronous pulley 23.

[0030] like Figures 4-5 As shown, a clamping mechanism 19 is provided, which includes a clamping slider mounting base 26. The bottom of the clamping slider mounting base 26 is provided with a clamping slider 25 corresponding to the material transfer guide rail 21. The bottom of the clamping slider mounting base 26 is provided with a material transfer timing belt connecting plate for fixing the material transfer timing belt 20. Two parallel L-shaped brackets 24 are vertically mounted on the clamping slider mounting base 26. A clamping cylinder mounting base 27 is mounted in the middle of the L-shaped brackets 24. A clamping cylinder 30 is obliquely mounted on the clamping cylinder mounting base 27. A linkage mechanism 28 is vertically mounted on the clamping cylinder mounting base 27. The linkage mechanism 28 is connected to the clamping rotating plate 29 and the clamping cylinder 30 respectively, and controls the rotation of the clamping rotating plate 29 through the clamping cylinder 30. A clamping buffer pad is mounted on the upper part of the L-shaped brackets 24. The linkage mechanism 28 includes a linkage base 31, a first linkage pair 37, a second linkage pair 38, and a rear linkage 36. The first linkage pair 37... The lower end is connected to a second pin 33, which is connected to a connecting rod base 31. The lower end of the second connecting rod pair 38 is connected to a third pin 34, which is connected to a connecting rod base 31. The middle of the first connecting rod pair 37 is connected to a first pin 32, which is connected to the cylinder connector 35 of the clamp cylinder 30 via a rear connecting rod 36. The upper ends of the first connecting rod pair 37 and the second connecting rod pair 38 are both pinned to the clamp rotating plate 29. The first connecting rod pair 37 and the second connecting rod pair 38 have the same length, and the distance between the ends of the first connecting rod pair 37 and the second connecting rod pair 38 on the same side is the same. The clamping mechanism 19 moves with the material transfer timing belt 20 via a connecting plate and the material transfer guide rail 21. At the same time, the linkage mechanism 28 in the clamping mechanism 19 can keep the clamp rotating plate 29 parallel to the clamp buffer pad and flip it, so that the clamping mechanism 19 can adapt to plates of different thicknesses.

[0031] As Figures 6-7As shown, the polishing device 12 comprises a first gantry 50 and a second gantry 51. One end of the first gantry 50 is connected with a first driving motor 39, the output end of the first driving motor 39 is connected with a first synchronous pulley 40, the other end of the first gantry 50 is connected with a second synchronous pulley mounting plate 46, the second synchronous pulley mounting plate 46 is connected with a second synchronous pulley 41, a first synchronous belt 42 is arranged to connect the first synchronous pulley 40 and the second synchronous pulley 41, one side of the first synchronous belt 42 is connected with a first synchronous belt connecting plate 48, the opposite side of the first synchronous belt 42 is connected with a third synchronous belt connecting plate 49, the first synchronous belt connecting plate 48 is connected with a first grinding head air cylinder 61 vertically downward, the first grinding head air cylinder 61 is connected with a first dust collection grinding head 62 vertically downward, the third synchronous belt connecting plate 49 is connected with a third grinding head air cylinder 65 vertically downward, the third grinding head air cylinder 65 is connected with a third dust collection grinding head 66 vertically downward; one end of the second gantry 51 is connected with a second driving motor 43, the output end of the second driving motor 43 is connected with a third synchronous pulley 44, the other end of the second gantry 51 is connected with a fourth synchronous pulley mounting plate 47, the fourth synchronous pulley mounting plate 47 is connected with a fourth synchronous pulley 45, a second synchronous belt 53 is arranged to connect the third synchronous pulley 44 and the fourth synchronous pulley 45, the second synchronous belt 53 is connected with a second synchronous belt connecting plate 52, the second synchronous belt connecting plate 52 is connected with a second grinding head air cylinder 63 vertically downward, the second grinding head air cylinder 63 is connected with a second dust collection grinding head vertically downward, the first gantry 50 is vertically downward mounted with two symmetrically arranged first pressing plate air cylinders 55, the end of each first pressing plate air cylinder 55 is mounted with a first pressing plate 57, the second gantry 51 is vertically downward mounted with two symmetrically arranged second pressing plate air cylinders 59, the end of each second pressing plate air cylinder 59 is mounted with a second pressing plate 60, the lower side of the first gantry 50 and the second gantry 51 is provided with a polishing platform plate 54 corresponding to the position of the frame 10, the polishing platform plate 54 is mounted with four first polishing pads 58 corresponding to the positions directly below the first pressing plate 57 and the second pressing plate 60, the polishing platform plate 54 is mounted with two second polishing pads 56 corresponding to the positions directly below the first dust collection grinding head 62 and the third dust collection grinding head 66.The first dust absorption grinding head 62 and the third dust absorption grinding head 66 are used for grinding the long sides of the plate material, the positions of the first dust absorption grinding head 62 and the third dust absorption grinding head 66 are adjusted and fixed in advance, the short side of the plate material is clamped by the clamp mechanism 19 and is moved simultaneously to complete the grinding of the plate material, since the first synchronous belt connecting plate 48 and the third synchronous belt connecting plate 49 are located on different sides of the first synchronous belt 42, when the synchronous belt is running, the first synchronous belt connecting plate 48 and the third synchronous belt connecting plate 49 move towards each other, so that the distance between the first dust absorption grinding head 62 and the third dust absorption grinding head 66 can be adjusted according to the length of the short side of the plate material, the second dust absorption grinding head 64 is used for grinding the short side of the plate material, the plate material is pressed and fixed by the first pressing plate 57 or the second pressing plate 60 during grinding, the second dust absorption grinding head 64 is driven to move back and forth by the second synchronous belt 53 to grind the short side of the plate material.

[0032] As shown in Figure 8 , the side pushing device 13 includes a side pushing frame 70, both ends of the side pushing frame 70 are fixed on the frame 10, the upper end of the side pushing frame 70 is installed with a side pushing guide rail, one end of the side pushing guide rail is provided with a side pushing motor mounting plate 67, the side pushing motor mounting plate 67 is installed with a side pushing driving motor 68, the output end of the side pushing driving motor 68 is vertically downwardly installed with a first side pushing synchronous belt pulley 69, the other end of the side pushing guide rail is provided with a side pushing synchronous belt pulley mounting seat 78, the side pushing synchronous belt pulley mounting seat 78 is installed with a second side pushing synchronous belt pulley 76, a side pushing synchronous belt 71 is arranged to connect the first side pushing synchronous belt pulley 69 and the second side pushing synchronous belt pulley 76, a sliding mounting seat 72 is arranged, the bottom of the sliding mounting seat 72 is provided with a side pushing sliding block 74 which slides on the side pushing sliding rail, the bottom of the sliding mounting seat 72 is connected with a side pushing synchronous belt connecting plate 73, the side pushing synchronous belt connecting plate 73 is connected to the side pushing synchronous belt 71, the sliding mounting seat 72 is vertically downwardly installed with a pushing plate connecting plate 77, the pushing plate connecting plate 77 is vertically connected with a side pushing plate 75.

[0033] As shown in Figure 1 and Figure 9 , the tail end of the frame 10 is installed with a pressing cylinder seat 79, the pressing cylinder seat 79 is installed with a pressing cylinder 80, the pressing cylinder 80 is vertically downwardly installed with an upper pressing block 81, the platform plate 14 is installed with a lower pressing block 82 corresponding to the position of the upper pressing block 81, after the plate material is finished with burr grinding, the plate material which is finished with grinding needs to be bent by the subsequent bending mechanism, the plate material which is finished with grinding is pushed to one side of the platform plate 14 by the side pushing device 13, at the same time, the upper pressing block 81 and the lower pressing block 82 on the pressing cylinder 80 are matched to fix the plate material which is finished with grinding on one side of the platform plate 14, so as to prevent the position from being transmitted, and it is convenient for the clamp mechanism 19 of the next process to clamp the plate material which is finished with grinding.

[0034] The working process and principle of the utility model are as follows: the plate material enters from one side of the polishing device 12, the plate material is clamped and moved by the shifting clamp device 11 until the edge of the front short side of the plate material is aligned with the second dust collection grinding head 64, the first pressing plate cylinder 55 is started and the front end of the plate material is pressed and fixed by the first pressing plate 57 and the first polishing pad, the second driving motor 43 is controlled, so that the second dust collection grinding head 64 polishes along the edge of the front short side of the plate material, after the front short side of the plate material is polished, the first pressing plate 57 is loosened, the shifting clamp device 11 is controlled to clamp the plate material, the first driving motor 39 is controlled, the first dust collection grinding head 62 and the third dust collection grinding head 66 are aligned with the two long sides of the plate material, then the plate material is moved away from the polishing device 12 by the clamp mechanism 19, the first dust collection grinding head 62 and the third dust collection grinding head 66 continuously polish the two long sides of the plate material while the plate material is moved, after the two long sides of the plate material are polished, the plate material is clamped and moved by the shifting clamp device 11 until the edges of the front and back sides of the plate material are aligned with the second dust collection grinding head 64, the second pressing plate cylinder 59 is started and the front end of the plate material is pressed and fixed by the second pressing plate 60 and the first polishing pad, the second driving motor 43 is controlled, so that the second dust collection grinding head 64 polishes along the edges of the front and back sides of the plate material, the plate material whose four edges are polished is moved to the side pushing device 13 by the clamp mechanism 19, the side pushing driving motor 68 is started, the movement of the side pushing synchronous belt 71 drives the side pushing plate 75 to push the plate material to the side of the frame 10, the pressing cylinder 80 is started, the plate material is pressed and fixed at the side of the frame 10, so that the clamp mechanism 19 in the bending mechanism can clamp the polished plate material.

[0035] The above description shows and describes the preferred embodiments of the utility model, as described above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified by the above teaching or related technology or knowledge within the scope of the utility model concept described herein. The modification and change made by the person skilled in the art without departing from the spirit and scope of the utility model should be within the protection scope of the claims attached to the utility model.

Claims

1. A device for deburring sheet metal before bending, characterized in that: The frame is provided with a transverse recess, a material moving and clamping device is installed in the recess, a platform plate is installed in the front and rear areas formed by the recess, a polishing device is installed at the longitudinal end of the frame, and a side pushing device is installed at the middle of the frame; The material moving and clamping device comprises a material moving guide rail, a material moving motor mounting seat is installed at one end of the material moving guide rail, a material moving driving motor is installed on the material moving motor mounting seat, a first material moving synchronous pulley is connected to the output end of the material moving motor, a material moving synchronous pulley mounting seat is installed at the other end of the material moving guide rail, a second material moving synchronous pulley is installed on the material moving synchronous pulley mounting seat, a material moving synchronous belt is arranged to connect the first material moving synchronous pulley and the second material moving synchronous pulley; a clamp mechanism is arranged, the clamp mechanism comprises a clamp sliding block mounting seat, a clamp sliding block corresponding to the material moving guide rail is arranged at the bottom of the clamp sliding block mounting seat, a material moving synchronous belt connecting plate is arranged at the bottom of the clamp sliding block mounting seat to fix the material moving synchronous belt, two parallel L-shaped supports are vertically upwardly installed on the clamp sliding block mounting seat, a clamp air cylinder mounting seat is installed at the middle of the L-shaped supports, a clamp air cylinder is obliquely installed on the clamp air cylinder mounting seat, a connecting rod mechanism is vertically upwardly installed on the clamp air cylinder mounting seat, the connecting rod mechanism is respectively connected to a clamp rotating plate and the clamp air cylinder and controls the rotation of the clamp rotating plate through the clamp air cylinder, and a clamp buffer pad is installed at the upper part of the L-shaped supports; The polishing device comprises a first gantry and a second gantry, a first driving motor is connected to one end of the first gantry, a first synchronous pulley is connected to the output end of the first driving motor, a second synchronous pulley mounting plate is connected to the other end of the first gantry, a second synchronous pulley is connected to the second synchronous pulley mounting plate, a first synchronous belt is arranged to connect the first synchronous pulley and the second synchronous pulley, a first synchronous belt connecting plate is connected to one side of the first synchronous belt, a third synchronous belt connecting plate is connected to the opposite side of the first synchronous belt, a first grinding head air cylinder is connected to the first synchronous belt connecting plate vertically downwardly, a first dust collection grinding head is connected to the first grinding head air cylinder vertically downwardly, a third grinding head air cylinder is connected to the third synchronous belt connecting plate vertically downwardly, and a third dust collection grinding head is connected to the third grinding head air cylinder vertically downwardly; a second driving motor is connected to one end of the second gantry, a third synchronous pulley is connected to the output end of the second driving motor, a fourth synchronous pulley mounting plate is connected to the other end of the second gantry, a fourth synchronous pulley is connected to the fourth synchronous pulley mounting plate, a second synchronous belt is arranged to connect the third synchronous pulley and the fourth synchronous pulley, a second synchronous belt connecting plate is connected to the second synchronous belt, a second grinding head air cylinder is connected to the second synchronous belt connecting plate vertically downwardly, and a second dust collection grinding head is connected to the second grinding head air cylinder vertically downwardly. The side pushing device comprises a side pushing frame, two ends of the side pushing frame are fixed on the frame, an upper end of the side pushing frame is provided with a side pushing guide rail, one end of the side pushing guide rail is provided with a side pushing motor mounting plate, a side pushing driving motor is mounted on the side pushing motor mounting plate, a first side pushing synchronous pulley is vertically downward mounted on an output end of the side pushing driving motor, the other end of the side pushing guide rail is provided with a side pushing synchronous pulley mounting seat, a second side pushing synchronous pulley is mounted on the side pushing synchronous pulley mounting seat, a side pushing synchronous belt is arranged to connect the first side pushing synchronous pulley and the second side pushing synchronous pulley, a sliding mounting seat is arranged, a side pushing sliding block is arranged on the bottom of the sliding mounting seat and slides on the side pushing sliding rail, a side pushing synchronous belt connecting plate is connected to the bottom of the sliding mounting seat, the side pushing synchronous belt connecting plate is connected to the side pushing synchronous belt, a push plate connecting plate is vertically downward mounted on the sliding mounting seat, and a side pushing plate is vertically connected to the push plate connecting plate.

2. The device for deburring sheet metal before bending according to claim 1, characterized in that: The connecting rod mechanism comprises a connecting rod base, a first connecting rod pair, a second connecting rod pair and a rear connecting rod, the lower end of the first connecting rod pair is connected with a second pin shaft, the second pin shaft is connected to the connecting rod base, the lower end of the second connecting rod pair is connected with a third pin shaft, the third pin shaft is connected to the connecting rod base, the middle of the first connecting rod pair is connected with a first pin shaft, the first pin shaft is connected to a cylinder joint of a clamp cylinder through the rear connecting rod, and the upper ends of the first connecting rod pair and the second connecting rod pair are both pin-connected to a clamp rotating plate.

3. The device for deburring sheet metal before bending according to claim 2, characterized in that: The first connecting rod pair and the second connecting rod pair have the same length, and the distances between the end heads on the same side of the first connecting rod pair and the second connecting rod pair are the same.

4. The device for deburring sheet metal before bending according to claim 1, characterized in that: The first portal frame is vertically downward provided with two symmetrically arranged first pressing plate cylinders, the end heads of the first pressing plate cylinders are both provided with first pressing plates, the second portal frame is vertically downward provided with two symmetrically arranged second pressing plate cylinders, and the end heads of the second pressing plate cylinders are both provided with second pressing plates.

5. The device for deburring sheet metal before bending according to claim 4, characterized in that: The first portal frame and the second portal frame are correspondingly provided with polishing platform plates below the positions of the frame, the polishing platform plates are provided with four first polishing shims corresponding to the positions directly below the first pressing plates and the second pressing plates, and the polishing platform plates are provided with two second polishing shims corresponding to the positions directly below the first dust absorption grinding heads and the third dust absorption grinding heads.

6. The device for deburring sheet metal before bending according to claim 1, characterized in that: The tail end of the frame is provided with a pressing cylinder seat on one side, the pressing cylinder seat is provided with a pressing cylinder, the pressing cylinder is vertically downward provided with an upper pressing block, and the platform plate is provided with a lower pressing block corresponding to the position of the upper pressing block.

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