Thin plate bending mechanism

Abstract

The present invention relates to the technical field of thin plate bending mechanisms, specifically a thin plate bending mechanism, comprising: a fuselage; two groups of hydraulic components, both fixedly connected to the front edge position of the upper surface of the fuselage; a pressure plate, fixedly connected to the center position of the lower surface of the hydraulic component; an upper mold, fixedly connected to the lower end of the pressure plate; a lower mold, fixedly connected to the center position of the front outer surface of the fuselage; a grinding mechanism is fixedly connected to the front outer surface of the fuselage near the lower mold, and the grinding mechanism grinds the cross section of the thin plate before bending. The present invention is provided with a grinding mechanism, and the connection between the first slider 67 and the first spring is used to adjust the spacing of the grinding wheels, which is conducive to the grinding of burrs on the edges of thin plates of different widths. By grinding the burrs on the edges of the thin plates, burrs generated by shearing and punching of the thin plates are removed, and the existence of edge burrs can be avoided, which causes stress concentration and fracture of the thin plate during bending.

Description

Technical Field

[0001] The invention relates to the technical field of thin plate bending mechanisms, in particular to a thin plate bending mechanism. Background Art

[0002] The bending machine is a machine that can bend thin plates. Its structure mainly includes a bracket, a workbench and a clamping plate. The workbench is placed on the bracket. The workbench is composed of a base and a pressure plate. The base is connected to the clamping plate through a hinge. The base is composed of a base shell, a coil and a cover plate. The coil is placed in the depression of the base shell, and the top of the depression is covered with a cover plate.

[0003] In the prior art, in the bending process, burrs often appear on the edges of the material after shearing or punching, which easily leads to stress concentration and fracture during bending. The cracking occurs in the shearing zone and kneading zone of the workpiece, affecting the bending effect of the thin plate and even causing the thin plate to be broken during bending.

[0004] Therefore, a thin plate bending mechanism is proposed. Summary of the invention

[0005] The object of the present invention is to provide a thin plate bending mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a thin plate bending mechanism, comprising:

[0007] body;

[0008] Two sets of hydraulic components are fixedly connected to the front edge of the upper surface of the fuselage;

[0009] A pressure plate, fixedly connected to the center position of the lower surface of the hydraulic assembly;

[0010] An upper mold is fixedly connected to the lower end of the pressing plate;

[0011] The lower mold is fixedly connected to the center position of the outer surface of the front end of the fuselage;

[0012] A grinding mechanism is fixedly connected to the outer surface of the front end of the fuselage near the lower mold, and the grinding mechanism grinds the cross-section of the thin plate before bending.

[0013] Preferably, the grinding mechanism includes a mounting frame fixedly connected to the outer surface of the front end of the fuselage near the position of the lower mold, a connecting rod is embedded in the mounting frame, a motor is fixedly connected to the upper end of the connecting rod, a rotating shaft is fixedly connected to one end of the motor output shaft, a grinding wheel is fixedly connected to the outer surface of the rotating shaft, two first springs are fixedly connected to the lower end of the outer surface of the connecting rod, one end of the two first springs passes through the mounting frame and are commonly connected to a first slider, and the first slider is slidably connected to the mounting frame.

[0014] Preferably, a through hole is provided on the outer surface of the front end of the mounting bracket near the first spring, and the lower end of the outer surface of the connecting rod is arranged in an arc shape near the through hole.

[0015] Preferably, a first sleeve is fixedly connected to the lower end of the outer surface of the connecting rod near the through hole, and a suction cup is fixedly connected to one end of the first sleeve near the mounting frame.

[0016] Preferably, a ventilation pipe is fixedly connected to the middle position of the inner surface of the first sleeve, the ventilation pipe is a T-shaped structure component, the end of the ventilation pipe away from the mounting frame is fixedly connected to the first airbag, and one end of the first airbag is fixedly connected to the second slider.

[0017] Preferably, one end of the second sliding block away from the first airbag is fixedly connected to a first protective pad, and the first protective pad is a fixing member made of rubber material.

[0018] Preferably, a connecting plate is snap-connected to the lower end of the outer surface of the connecting rod, and the connecting plate is a component made of plastic material. A ball is embedded in the lower end of the connecting rod and is rollingly connected to the lower surface of the interior of the mounting frame.

[0019] Preferably, the upper end of the outer surface of the connecting rod is fixedly connected to a limiting mechanism near the motor, and the limiting mechanism includes a fixed block fixedly connected to the upper end of the outer surface of the connecting rod near the motor, one end of the fixed block is rotatably connected to the connecting block, and one end of the connecting block is fixedly connected to a limiting plate, and the limiting plate is a component with an arc-shaped cross-section.

[0020] Preferably, a second spring is fixedly connected to a position on the upper surface of the fixed block near the connecting block, a telescopic rod is fixedly connected to a position on the upper surface of the fixed block near the connecting block, one end of the telescopic rod passes through the second spring and is tightly connected to a second airbag, and the second airbag is fixedly connected to the limiting plate.

[0021] Preferably, the outer surface of the limiting plate is covered with a second protective pad, and the second protective pad is a component made of plastic material.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention sets a grinding mechanism and realizes adjustment of the grinding wheel spacing through the connection mode of the first slider and the first spring, so as to adapt to thin plates of different widths and facilitate the grinding of edge burrs of thin plates of different widths. By grinding the edge burrs of the thin plates, burrs generated by shearing and punching of the thin plates are removed, so as to avoid the situation in which the thin plates are bent during the bending process and cracked due to stress concentration caused by the presence of edge burrs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a cross-sectional view of the grinding mechanism of the present invention;

[0026] Figure 3 For the present invention Figure 2 A magnified view of point A;

[0027] Figure 4 For the present invention Figure 2 A magnified view of point B;

[0028] Figure 5 This is a structural view of the limiting mechanism of the present invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged view of point C.

[0030] In the figure: 1. body; 2. hydraulic assembly; 3. pressure plate; 4. upper mold; 5. lower mold; 6. grinding mechanism; 61. mounting frame; 62. connecting rod; 63. motor; 64. rotating shaft; 65. grinding wheel; 66. first spring; 67. first slider; 68. through hole; 69. first sleeve; 60. suction cup; 611. ventilation pipe; 612. first airbag; 613. second slider; 614. first protective pad; 615. connecting plate; 616. ball; 7. limiting mechanism; 71. fixing block; 72. connecting block; 73. limiting plate; 74. second protective pad; 75. second spring; 76. second airbag; 77. telescopic rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present invention provides a thin plate bending mechanism, which solves the technical problem in the prior art that, during the bending process, burrs often appear on the edge of the material after shearing or punching, and stress concentration is easily formed during bending, resulting in cracking. The cracking position occurs in the shearing zone and kneading zone of the workpiece, which affects the bending effect of the thin plate and even causes the thin plate to be bent and cracked.

[0033] The technical solution in the embodiment of the present invention is to solve the above technical problems. The overall idea is as follows: before bending the thin plate, the edge of the thin plate after shearing or punching is polished to remove the burrs at the edge position, and the polished thin plate enters the bending machine for bending;

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] like Figures 1 to 6 The present invention provides a thin plate bending mechanism, comprising:

[0036] Body 1;

[0037] Two sets of hydraulic components 2 are fixedly connected to the front edge of the upper surface of the fuselage 1;

[0038] The pressure plate 3 is fixedly connected to the center position of the lower surface of the hydraulic assembly 2;

[0039] The upper mold 4 is fixedly connected to the lower end of the pressing plate 3;

[0040] The lower mold 5 is fixedly connected to the center position of the outer surface of the front end of the fuselage 1;

[0041] A grinding mechanism 6 is fixedly connected to the front end outer surface of the body 1 near the lower mold 5, and the grinding mechanism 6 grinds the cross-section of the thin plate before bending.

[0042] In the prior art, during the bending process, burrs often appear on the edges of the material after shearing or punching, which easily leads to stress concentration and fracture during bending. The cracking occurs in the shearing zone and kneading zone of the workpiece, affecting the bending effect of the thin plate, and even causing the thin plate to be broken during bending. The present invention sets a grinding mechanism 6. When working, first, the operator places the thin plate on the front end of the grinding mechanism 6 to grind the edges at both ends of the thin plate. The thin plate moves to the grinding position. At this time, the hydraulic assembly 2 moves the pressing plate 3 downward through the hydraulic rod. Thereafter, the lower mold 5 contacts the thin plate and squeezes the thin plate to the position of the lower mold 5 through the upper mold 4, thereby realizing the bending of the thin plate and reducing the possibility of the thin plate breaking during the bending process due to burrs on the edge of the thin plate.

[0043] As an embodiment of the present invention, Figure 2 , Figure 3 As shown, the grinding mechanism 6 includes a mounting frame 61 fixedly connected to the outer surface of the front end of the fuselage 1 near the lower mold 5, a connecting rod 62 is embedded in the mounting frame 61, a motor 63 is fixedly connected to the upper end of the connecting rod 62, a rotating shaft 64 is fixedly connected to one end of the output shaft of the motor 63, a grinding wheel 65 is fixedly connected to the outer surface of the rotating shaft 64, two first springs 66 are fixedly connected to the lower end of the outer surface of the connecting rod 62, one end of the two first springs 66 pass through the mounting frame 61 and are commonly connected to a first slider 67, and the first slider 67 is slidably connected to the mounting frame 61.

[0044] In view of the problems existing in the prior art, the present invention sets a grinding mechanism 6. The connecting rod 62 is held and pulled outward to make the first spring 66 in a stretched state. At this time, the distance between the two connecting rods 62 can be adjusted to the left or right so that the distance between the grinding wheels 65 matches the width of the thin plate. When the operator releases his palm, the first spring 66 will return to its original length, so that the connecting rod 62 is tightly connected to the mounting frame 61 to keep the connecting rod 62 fixed. When working, first, the operator places the thin plate at the front end of the grinding mechanism 6. At this time, the motor 63 is started, and the output shaft of the motor 63 rotates to rotate the rotating shaft 64, thereby rotating the grinding wheel 65 fixedly connected to the rotating shaft 64. When the grinding wheel 65 rotates The burrs on the edge of the thin plate are grinded to remove the burrs, and then the thin plate is moved to a position where the bending point of the thin plate is at the upper end of the lower mold 5. At this time, the hydraulic assembly 2 moves the pressing plate 3 downward through the hydraulic rod, and then the lower mold 5 contacts the thin plate and squeezes the thin plate to the position of the lower mold 5 through the upper mold 4 to achieve the bending of the thin plate. The spacing of the grinding wheel 65 is adjusted by the connection between the first slider 67 and the first spring 66 to adapt to thin plates of different widths, which is beneficial to the grinding of burrs on the edges of thin plates of different widths. By grinding the burrs on the edges of the thin plates, burrs caused by shearing and punching of the thin plates are removed, and the presence of edge burrs can be avoided, which leads to stress concentration and fracture of the thin plate during bending during the bending process.

[0045] As an embodiment of the present invention, Figure 2 , Figure 3 As shown, a through hole 68 is provided on the front end outer surface of the mounting bracket 61 near the first spring 66 , and an arc shape is provided on the lower end of the outer surface of the connecting rod 62 near the through hole 68 .

[0046] When adjusting the position of the connecting rod 62, since the connecting rod 62 is located inside the mounting frame 61, it is not convenient to adjust the connecting rod 62. The present invention provides a through hole 68, and the hand is inserted into the mounting frame 61 through the through hole 68. The connecting rod 62 is held and pulled outward to put the first spring 66 in a stretched state, so that the connecting rod 62 can be adjusted conveniently. At the same time, the connecting rod 62 with a curved outer surface makes the operator's hand holding more comfortable and the hand-held movement process is more stable.

[0047] As an embodiment of the present invention, Figure 3 As shown, a first sleeve 69 is fixedly connected to the lower end of the outer surface of the connecting rod 62 near the through hole 68 , and a suction cup 60 is fixedly connected to one end of the first sleeve 69 near the mounting bracket 61 .

[0048] When the connecting rod 62 is working, the first spring 66 pulls the connecting rod 62 in the direction of the mounting bracket 61 to achieve a tight fixation of the connecting rod 62, but the fixation of the first spring 66 is not stable. The present invention provides a suction cup 60. When the connecting rod 62 moves to a position suitable for the width of the thin plate, the connecting rod 62 is released to separate the connecting rod 62 from the pulling force of being held. At this time, the first spring 66 will restore its original length, pull the connecting rod 62 to the position of the mounting bracket 61, and make the suction cup 60 adsorbed and connected to the plane of the mounting bracket 61 to achieve the fixation of the connecting rod 62, thereby improving the stability of the working process of the connecting rod 62.

[0049] As an embodiment of the present invention, Figure 3 As shown, a vent pipe 611 is fixedly connected to the middle position of the inner surface of the first sleeve 69. The vent pipe 611 is a T-shaped structure component. The end of the vent pipe 611 away from the mounting frame 61 is fixedly connected to the first airbag 612, and one end of the first airbag 612 is fixedly connected to the second slider 613.

[0050] When the suction cup 60 is adsorbed and fixed to the mounting frame 61, a large pulling force is required to cause the suction cup 60 to be separated from the adsorption and fixation with the mounting frame 61, which is laborious to operate. At the moment of pulling the suction cup 60, the pulling force given by the operator will not disappear suddenly, which will cause the connecting rod 62 to hit the mounting frame 61 in the direction of the operator, which is prone to danger. The present invention provides a ventilation pipe 611, and the action of holding the connecting rod 62 will cause the palm to squeeze the second slider 613 to move in the direction of the first air bag 612. At this time, the first air bag 612 will be compressed, and the gas inside the first air bag 612 will be discharged from the ventilation pipe 611 to the inside of the suction cup 60. The gas will open the suction cup 60, and then the suction cup 60 will be separated from the adsorption of the mounting frame 61. While pulling the connecting rod 62, the gas will be passed into the inside of the suction cup 60, and the suction cup 60 will be opened from the inside of the suction cup 60, which is convenient for separation of the suction cup 60. The operation is simple and convenient with high safety.

[0051] As an embodiment of the present invention, Figure 3 As shown, one end of the second sliding block 613 away from the first airbag 612 is fixedly connected to a first protective pad 614 , and the first protective pad 614 is a rubber-made fastener.

[0052] Since the operator's palm needs to be in direct contact with the second slider 613 when squeezing the second slider 613, in order to improve the operator's operating experience and reduce the wear of the operator's palm by the second slider 613, the present invention provides a first protective pad 614 to alleviate the wear of the operator's palm by the second slider 613 and improve the operator's operating experience.

[0053] As an embodiment of the present invention, Figure 4As shown, the lower end of the outer surface of the connecting rod 62 is snap-connected with a connecting plate 615, and the connecting plate 615 is a component made of plastic material. The lower end of the connecting rod 62 is embedded with a ball 616 in a rolling connection, and the ball 616 is rollingly connected to the lower surface of the interior of the mounting frame 61.

[0054] To ensure the stability of the connecting rod 62, the lower end of the connecting rod 62 needs to be tightly connected to the mounting frame 61. However, the tight connection will make it difficult for the connecting rod 62 to slide smoothly inside the mounting frame 61, and will cause loss of the lower end of the connecting rod 62, resulting in damage to the component. The present invention provides a ball 616, which is embedded in the lower end of the connecting rod 62 and is in a state where it can roll at any time. The connecting plate 615 is used to limit the ball 616 to prevent the ball 616 from detaching from the connecting rod 62. When the connecting rod 62 is moved, the ball 616 can roll on the lower surface inside the mounting frame 61, thereby reducing the friction between the components and protecting the connecting rod 62.

[0055] As an embodiment of the present invention, Figure 2 , Figure 5 As shown, the upper end of the outer surface of the connecting rod 62 is fixedly connected to a limiting mechanism 7 near the motor 63, and the limiting mechanism 7 includes a fixed block 71 fixedly connected to the upper end of the outer surface of the connecting rod 62 near the motor 63, one end of the fixed block 71 is rotatably connected to a connecting block 72, and one end of the connecting block 72 is fixedly connected to a limiting plate 73, and the limiting plate 73 is a component with an arc-shaped cross-section.

[0056] Since the rotation of the grinding wheel 65 can grind the edge of the thin plate, the operator cannot accurately make the edge of the thin plate just contact the grinding wheel 65 when moving the thin plate, which will cause the grinding wheel 65 on one side to over-grind the edge of the thin plate, causing damage to the plate. The present invention provides a limiting mechanism 7. When the operator holds the thin plate and moves it, it first contacts one end of the limiting plate 73. The limiting plate 73 adjusts the position of the thin plate to a position where the edge of the thin plate can just contact the grinding wheel 65, and limits the position of the thin plate, ensuring that the grinding wheel 65 just grinds the edge burr position of the thin plate, thereby avoiding the phenomenon that the thin plate is over-grinded by the grinding wheel 65.

[0057] As an embodiment of the present invention, Figure 6 As shown, a second spring 75 is fixedly connected to a position on the upper surface of the fixed block 71 near the connecting block 72, and a telescopic rod 77 is fixedly connected to a position on the upper surface of the fixed block 71 near the connecting block 72. One end of the telescopic rod 77 passes through the second spring 75 and is tightly connected to a second airbag 76. The second airbag 76 is fixedly connected to the limiting plate 73.

[0058] The limiting plate 73 needs to limit the position of the thin plate so that the edge of the thin plate just contacts the grinding wheel 65. When the thin plate just contacts the limiting plate 73, the present invention limits the rotation range of the limiting plate 73 by setting a second spring 75 to prevent the limiting plate 73 from rotating too much during the movement of the thin plate, thereby causing the limiting plate 73 to collide with the grinding wheel 65, resulting in unnecessary wear of the limiting plate 73 and the grinding wheel 65. At the same time, after the telescopic rod 77 contacts the limiting plate 73, the second airbag 76 is squeezed by the telescopic rod 77, reducing the impact of the telescopic rod 77 on the limiting plate 73 and reducing the degree of component wear caused by component collision.

[0059] As an embodiment of the present invention, Figure 6 As shown, the outer surface of the limiting plate 73 is covered with a second protective pad 74, and the second protective pad 74 is a component made of plastic material.

[0060] When the thin plate contacts the limiting plate 73, the edge of the thin plate slides in contact with the surface of the limiting plate 73. To prevent the limiting plate 73 from causing damage to the edge of the thin plate, the present invention provides a second protective pad 74 so that the second protective pad 74 contacts the edge of the thin plate. The second protective pad 74 is used to protect the edge of the thin plate to prevent the limiting plate 73 from causing scratches on the edge of the thin plate.

[0061] Instructions for use: During use of the present invention, the hand is inserted into the mounting frame 61 through the through hole 68, the connecting rod 62 is held and pulled outward to make the first spring 66 in a stretched state. At this time, the action of holding the connecting rod 62 will cause the palm to squeeze the first protective pad 614, thereby causing the first protective pad 614 and the second slider 613 to move toward the first air bag 612. At this time, the first air bag 612 will be compressed, and the gas inside the first air bag 612 will be discharged from the vent pipe 611 to the inside of the suction cup 60. The gas will open the suction cup 60, thereby causing the suction cup 60 to break away from the adsorption of the mounting frame 61. At this time, the distance between the two connecting rods 62 can be adjusted to the left or right so that the distance between the grinding wheels 65 matches the width of the thin plate. When the operator releases his palm, the first spring 66 will return to its original length, causing the suction cup 60 to press against the mounting frame 61 again. The second slider 613 is freed from the squeezed state, so that the first airbag 612 sucks air inward, reduces the internal air pressure of the suction cup 60, and causes the connecting rod 62 to be fixed in the current position. When working, first, the operator places the thin plate at the front end of the grinding mechanism 6. When the thin plate moves, it first contacts the limit plate 73. The limit plate 73 adjusts the position of the thin plate to the position where the edge of the thin plate can just contact the grinding wheel 65. At this time, the motor 63 is started, and the output shaft of the motor 63 rotates to rotate the rotating shaft 64, thereby rotating the grinding wheel 65 fixedly connected to the rotating shaft 64. When the grinding wheel 65 rotates, it grinds the burrs on the edge of the thin plate to remove the burrs, and then the thin plate moves to the bending position. At this time, the hydraulic assembly 2 moves the pressing plate 3 downward through the hydraulic rod. Thereafter, the lower mold 5 contacts the thin plate and squeezes the thin plate to the position of the lower mold 5 through the upper mold 4, thereby realizing the bending of the thin plate.

[0062] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin plate bending mechanism, comprising: Body (1); Two sets of hydraulic components (2) are fixedly connected to the front edge of the upper surface of the fuselage (1); A pressure plate (3) is fixedly connected to the center of the lower surface of the hydraulic assembly (2); An upper mold (4) is fixedly connected to the lower end of the pressing plate (3); The lower mold (5) is fixedly connected to the center position of the outer surface of the front end of the fuselage (1); The invention is characterized in that: a grinding mechanism (6) is fixedly connected to the front end outer surface of the body (1) near the lower mold (5), and the grinding mechanism (6) grinds the cut surface of the thin plate before bending; The grinding mechanism (6) comprises a mounting frame (61) fixedly connected to the front end outer surface of the machine body (1) near the lower mold (5), a connecting rod (62) is embedded and connected inside the mounting frame (61), a motor (63) is fixedly connected to the upper end of the connecting rod (62), one end of the output shaft of the motor (63) is fixedly connected to a rotating shaft (64), the outer surface of the rotating shaft (64) is fixedly connected to a grinding wheel (65), and two first springs (66) are fixedly connected to the lower end of the outer surface of the connecting rod (62), one end of the two first springs (66) passes through the mounting frame (61) and is commonly connected to a first slider (67), and the first slider (67) is slidably connected to the mounting frame (61); A limiting mechanism (7) is fixedly connected to the upper end of the outer surface of the connecting rod (62) at a position close to the motor (63), and the limiting mechanism (7) comprises a fixed block (71) fixedly connected to the upper end of the outer surface of the connecting rod (62) at a position close to the motor (63), one end of the fixed block (71) is rotatably connected to a connecting block (72), and one end of the connecting block (72) is fixedly connected to a limiting plate (73), and the limiting plate (73) is a component with an arc-shaped cross section; A second spring (75) is fixedly connected to a position on the upper surface of the fixing block (71) near the connecting block (72); a telescopic rod (77) is fixedly connected to a position on the upper surface of the fixing block (71) near the connecting block (72); one end of the telescopic rod (77) passes through the second spring (75) and is tightly connected to a second airbag (76); the second airbag (76) is fixedly connected to the limiting plate (73); A through hole (68) is provided on the front end outer surface of the mounting frame (61) near the first spring (66), and the lower end of the outer surface of the connecting rod (62) near the through hole (68) is arranged in an arc shape; A first sleeve (69) is fixedly connected to the lower end of the outer surface of the connecting rod (62) near the through hole (68), and a suction cup (60) is fixedly connected to one end of the first sleeve (69) near the mounting frame (61); A vent pipe (611) is fixedly connected to the middle position of the inner surface of the first sleeve (69); the vent pipe (611) is a T-shaped structure component; one end of the vent pipe (611) away from the mounting frame (61) is fixedly connected to a first air bag (612); one end of the first air bag (612) is fixedly connected to a second slider (613); One end of the second sliding block (613) away from the first airbag (612) is fixedly connected to a first protective pad (614), and the first protective pad (614) is a rubber-made fastener; The lower end of the outer surface of the connecting rod (62) is snap-connected with a connecting plate (615), the connecting plate (615) is a component made of plastic material, and the lower end of the connecting rod (62) is embedded with a ball (616) for rolling connection, and the ball (616) is rollingly connected to the lower surface of the interior of the mounting frame (61); The outer surface of the limiting plate (73) is covered with a second protective pad (74), and the second protective pad (74) is a component made of plastic material; Instructions for use: During use, a hand is inserted into the mounting frame (61) through the through hole (68), and the connecting rod (62) is held to pull the connecting rod (62) outward and put the first spring (66) in a stretched state. At this time, the action of holding the connecting rod (62) will cause the palm of the hand to squeeze the first protective pad (614), thereby causing the first protective pad (614) and the second slider (613) to move toward the first airbag (612). At this time, the first airbag (612) will be compressed, and the first airbag (612) will be compressed. The gas in the bag (612) will be discharged from the vent pipe (611) into the suction cup (60), and the gas will expand the suction cup (60), thereby making the suction cup (60) separate from the mounting frame (61). At this time, the distance between the two connecting rods (62) can be adjusted to the left or right so that the distance between the grinding wheels (65) matches the width of the thin plate. When the operator releases his palm, the first spring (66) will return to its original length, so that the suction cup (60) will be pressed against the mounting frame (61) again. At the same time, the second slider (613) is freed from the squeezed state, so that the first airbag (612) sucks air inward, so that the internal air pressure of the suction cup (60) is reduced, and the connecting rod (62) is fixed at the current position. When working, first, the operator places the thin plate at the front end of the grinding mechanism (6). When the thin plate moves, it first contacts the limit plate (73). The limit plate (73) adjusts the position of the thin plate to a position where the edge of the thin plate can just contact the grinding wheel (65). At this time, the motor (63) is started. The output shaft of the motor (63) rotates to rotate the rotating shaft (64), thereby rotating the grinding wheel (65) fixedly connected to the rotating shaft (64). The grinding wheel (65) grinds the burrs on the edge of the thin plate while rotating to remove the burrs. The thin plate then moves to the bending position. At this time, the hydraulic assembly (2) moves the pressing plate (3) downward through the hydraulic rod. Thereafter, the lower mold (5) contacts the thin plate and squeezes the thin plate to the position of the lower mold (5) through the upper mold (4), thereby achieving the bending of the thin plate.

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