Plate shearing equipment for automobile hardware stamping parts

Abstract

The invention relates to the field of hardware production and manufacturing, in particular to automobile hardware stamping part plate shearing equipment which comprises an operation table, a feeding plate is arranged on the operation table in an up-down sliding mode through a hydraulic power assembly, an upper blade is arranged on the feeding plate through an adjusting mechanism used for changing the inclination direction, and a lower blade is fixedly installed on the operation table. A linkage assembly in the adjusting mechanism is matched with the rotating part, the inclination direction of the upper blade is automatically changed after each time of shearing, a cutting edge uniformly participates in shearing operation in the whole length, excessive abrasion of a single position is avoided, the service life of the upper blade is remarkably prolonged, meanwhile, the material plate is prevented from being scratched, and the material plate is prevented from being scratched. The adjusting mechanism drives the tool rest plate to slide through the hydraulic cylinder, so that the upper blade gradually makes contact with a plate in a sliding cutting mode in the initial shearing process, local impact force is dispersed, damage of instantaneous loads to the blade is reduced, and the smoothness and stability of the shearing process are improved.

Description

Technical Field

[0001] The present invention relates to the field of production and manufacturing of hardware parts, and specifically to a shearing device for automotive hardware stamping parts. Background Art

[0002] The hardware stamping parts on an automobile are obtained through a process of stamping a metal sheet, and the sheet before stamping needs to be cut to a fixed length to meet the stamping requirements. Currently, common shearing devices usually use hydraulic support columns to press and fix the material plate, and a hydraulic power assembly drives the upper blade on the tool rest to cooperate with the lower blade on the operating table to complete the shearing.

[0003] In order to improve the shearing effect, in the prior art, the upper blade is often designed to be an inclined structure, and the inclined edge shearing method is used to gradually cut the sheet, thereby reducing the shearing resistance and improving the flatness of the cut. However, such a design still has significant defects in practical applications: First, when the inclined upper blade initially contacts the sheet, due to local force concentration, the impact force is relatively large, and the force gradually decreases during the subsequent shearing process. This uneven load distribution will accelerate the wear of the front end of the blade, that is, the end of the upper blade that inclines downward, resulting in a shortened blade life, inability to fully utilize the entire length of the blade edge, and increased equipment maintenance costs.

[0004] Second, the existing hydraulic support columns can only press and fix the sheet in the vertical direction. If the sheet itself is bent or warped, it cannot be effectively flattened during the shearing process, resulting in an uneven cut of the sheared sheet, and even burrs or cracks are generated, seriously affecting the quality of the stamping parts. Summary of the Invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A shearing device for automotive hardware stamping parts, including an operating table, on which a feeding plate is slidably arranged up and down through a hydraulic power assembly. The feeding plate is provided with an upper blade through an adjusting mechanism for changing the inclination direction. A lower blade is fixedly installed on the operating table, and a finishing mechanism for leveling the material plate is arranged on the operating table.

[0006] The adjusting mechanism includes a rotating member rotatably arranged on the feeding plate. The front part of the rotating member is in a rectangular block structure, and the rear part is in a cylindrical structure. A tool rest plate is slidably arranged on the rectangular block structure of the rotating member. The lower end of the front side of the tool rest plate is connected to the upper blade by means of a bolt connection. The adjusting mechanism further includes a linkage assembly for controlling the inclination direction of the upper blade to change after each shearing of the sheet.

[0007] The finishing mechanism includes a U-shaped frame fixedly installed on the operating table. A number of hydraulic support columns arranged at equal intervals in the left-right direction are arranged at the lower part of the U-shaped frame through a connecting component. Pressing rollers for pushing and flattening the material plate are arranged on the leftmost and rightmost hydraulic support columns through a swinging component.

[0008] Preferably, the linkage assembly includes a fixed rod fixedly installed on the right side of the rear end of the rotating member. A cross plate is fixedly installed on the operating table and below the fixed rod. Spring telescopic rods for pushing the fixed rod are fixedly installed on both the upper side of the cross plate and the inner wall of the top end of the operating table.

[0009] Preferably, two locking columns are slidably arranged along the radial direction inside the cylindrical structure of the rotating member. A helical spring is arranged between the two locking columns. Two jacks are symmetrically arranged up and down and both inclined to the left are opened on the inner side of the feed plate.

[0010] Preferably, a dial rod extending backward to the rear of the feed plate is fixedly installed on the rear side of the locking column. Fixing plates for pushing the dial rod are fixedly installed on both the upper side of the cross plate and the inner wall of the top end of the operating table.

[0011] Preferably, a semi-circular arc-shaped plate is fixedly installed at the upper end of the outer side of the cylindrical structure of the rotating member. An arc-shaped groove for the arc-shaped plate to rotate and simultaneously block the arc-shaped plate is opened on the feed plate. A hydraulic cylinder is arranged between the rectangular block structure of the rotating member and the tool rest plate.

[0012] Preferably, the connecting assembly includes a mounting block arranged on the lower side of the horizontal section of the U-shaped frame. The lower side of the mounting block is fixedly connected to the corresponding hydraulic support column. A bidirectional screw is rotatably arranged on the operating table. The bidirectional screw is threadedly connected to the mounting blocks at the rightmost and leftmost parts.

[0013] Preferably, two symmetrically arranged sliding blocks are slidably arranged left and right on the lower blade. A limiting roller is rotatably arranged on the upper side of the sliding block. A linkage plate threadedly connected to the bidirectional screw is fixedly installed on the side of the sliding block away from the middle of the operating table.

[0014] Preferably, the swinging assembly includes connecting support plates fixedly installed on the outer sides of the leftmost and rightmost hydraulic support columns. The connecting support plates are hinged to a pressure roller through hinge plates hinged thereto. The hinge plates on the left and right sides are arranged in a V-shaped pattern.

[0015] Preferably, a gear is fixedly installed at the hinge joint of the hinge plate and the connecting support plate. A rack is slidably arranged vertically on the connecting support plate. The upper end of the rack is fixedly installed with a pressing plate sleeved outside the fixed section of the hydraulic support column in a vertical sliding manner. A compression spring is arranged between the pressing plate and the lower part of the telescopic section of the hydraulic support column.

[0016] Preferably, a moving plate is slidably arranged left and right on the upper side of the horizontal section of the U-shaped frame. A plurality of lifting frames arranged up and down at equal intervals in the left-right direction are arranged on the moving plate. A leveling roller is rotatably arranged at the lower part of the lifting frame. A guide plate for guiding the lifting frame is slidably arranged vertically on the operating table.

[0017] The beneficial effects of the present invention are as follows: First, through the cooperation of the linkage component and the rotating part in the adjustment mechanism, the inclination direction of the upper blade is automatically changed after each shearing, enabling the entire length of the blade edge to uniformly participate in the shearing operation, avoiding excessive wear at a single position, and significantly extending the service life of the upper blade. At the same time, the adjustment mechanism drives the tool rest plate to slide through a hydraulic cylinder, enabling the upper blade to gradually contact the plate in a skiving manner during the initial shearing, dispersing the local impact force, reducing the damage to the blade caused by the instantaneous load, and improving the smoothness and stability of the shearing process.

[0018] Second, through the coordinated action of the hydraulic support column and the swing component in the finishing mechanism, during the process of the hydraulic support column pressing the material plate, the eight-shaped swing structure composed of the connecting support plate and the hinge plate drives the pressure roller to push the plate to the left and right sides, effectively flattening the bent or warped material plate, ensuring that the plate is in a flat state before shearing, and the pressure roller can also eliminate the stress concentration during the shearing process, greatly improving the flatness of the cut and the quality of the finished product.

[0019] Third, through the linkage of the bidirectional screw and the sliding block in the connection component, the limit roller is driven to slide left and right along the lower blade, realizing automatic centering and limiting of plates with different widths, avoiding shearing deviation, ensuring the accuracy of cutting, and through the movement cooperation of the lifting frame and the leveling roller on the guide plate, the leveling roller can also roll at the position pressed by the hydraulic support column, eliminating the indentation on the material plate and further ensuring the quality of the stamping finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings and embodiments.

[0021] Figure 1 is the first overall structural schematic diagram of the present invention.

[0022] Figure 2 is the second overall structural schematic diagram of the present invention.

[0023] Figure 3 is the structural schematic diagram of the operating table, tool rest plate, upper blade and limit roller in the present invention.

[0024] Figure 4 is the partial rear view of the tool rest plate, arc plate, rotating part and lever in the present invention.

[0025] Figure 5 is the partial cross-sectional view of the tool rest plate, rotating part and locking column in the present invention.

[0026] Figure 6 is the partial structural schematic diagram of the operating table and the finishing mechanism in the present invention.

[0027] Figure 7 is the structural schematic diagram of the mounting block, hydraulic support column, pressure roller and hinge plate in the present invention.

[0028] In the figure: 1, operating table; 2, feed plate; 3, adjusting mechanism; 4, upper blade; 5, lower blade; 6, finishing mechanism; 31, rotating member; 32, tool rest plate; 33, linkage assembly; 61, U-shaped frame; 62, connection assembly; 63, hydraulic support column; 64, swing assembly; 65, pressure roller; 66, sliding block; 67, moving plate; 311, arc plate; 312, arc groove; 313, hydraulic cylinder; 331, fixed rod; 332, cross plate; 333, spring telescopic rod; 334, locking column; 335, lever; 336, fixed plate; 621, mounting block; 622, bidirectional screw; 641, connecting support plate; 642, hinged plate; 643, gear; 644, rack; 645, pressing plate; 661, limiting roller; 662, linkage plate; 671, lifting frame; 672, leveling roller; 673, guide plate; 674, protruding column; 675, electric cylinder; 676, adjusting screw. Specific embodiments

[0029] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments, the techniques or conditions described in the literature in this field or according to the product specifications are followed.

[0030] Refer to Figure 1 、 Figure 2 and Figure 3 , a shearing device for automotive hardware stamping parts, including an operating table 1, on which a feed plate 2 is slid up and down through a hydraulic power assembly, the feed plate 2 is provided with an upper blade 4 through an adjusting mechanism 3 for changing the inclination direction, a lower blade 5 is fixedly installed on the operating table 1, and a finishing mechanism 6 for leveling the material plate is arranged on the operating table 1.

[0031] When it is necessary to shear the material plate, the operator places the material plate on the operating table 1, so that the material plate moves from front to back between the lower blade 5 and the upper blade 4, and then the finishing mechanism 6 first flattens the material plate to prevent the material plate from bending, and then the finishing mechanism 6 presses and fixes the material plate on the operating table 1. After that, the hydraulic power assembly is used to control the feed plate 2 to move downward, so that the feed plate 2 drives the upper blade 4 through the adjusting mechanism 3 to perform a shearing operation on the material plate.

[0032] After that, the inclination direction of the upper blade 4 is changed through the adjusting mechanism 3, and the upper blade 4 is moved upward to the upper part of the lower blade 5 through the hydraulic power assembly, then the material plate is moved backward, and then the upper blade 4 is moved downward again, so as to perform continuous shearing operations on the material plate.

[0033] Refer to Figure 1 、 Figure 6 andFigure 7 , the sorting mechanism 6 includes a U-shaped frame 61 fixedly installed on the operating table 1. A number of hydraulic support columns 63 arranged at equal intervals in the left-right direction are provided at the lower part of the U-shaped frame 61 through a connecting component 62. Pressing rollers 65 for pushing and flattening the material plate are provided on the leftmost and rightmost hydraulic support columns 63 through a swinging component 64.

[0034] Continue to refer to Figure 1 , Figure 6 and Figure 7 , the connecting component 62 includes a mounting block 621 arranged on the lower side of the horizontal section of the U-shaped frame 61. The lower side of the mounting block 621 is fixedly connected to the corresponding hydraulic support column 63. A bidirectional screw 622 is rotatably arranged on the operating table 1. The bidirectional screw 622 is threadedly connected to the mounting blocks 621 at the rightmost and leftmost parts.

[0035] It should be noted that the mounting blocks 621 at the rightmost and leftmost parts are slidably connected to the horizontal section of the U-shaped frame 61 in the left-right direction, and the remaining mounting blocks 621 are fixedly connected to the U-shaped frame 61. The bidirectional screw 622 passes through the middle mounting block 621 and is not engaged with it.

[0036] Refer to Figure 1 , Figure 3 and Figure 6 , two symmetrically arranged sliding blocks 66 are slidably arranged on the lower blade 5 in the left-right direction. A limiting roller 661 is rotatably arranged on the upper side of the sliding block 66. A linkage plate 662 threadedly connected to the bidirectional screw 622 is fixedly installed on the side of the sliding block 66 away from the middle of the operating table 1.

[0037] When the shearing operation of the material plate is required, the operator manually rotates the bidirectional screw 622 in advance according to the left-right width of the material plate, so that the bidirectional screw 622 drives the mounting blocks 621 at the rightmost and leftmost parts and the two linkage plates 662 to adjust their positions left and right, so that the linkage plate 662 drives the distance between the two limiting rollers 661 to be equal to the width of the material plate through the sliding block 66. At the same time, the mounting blocks 621 at the rightmost and leftmost parts drive the hydraulic support columns 63 thereon to move to the left and right edge positions of the material plate, so as to press and fix the edge positions of the material plate.

[0038] Refer to Figure 1 , Figure 6 and Figure 7 , the swinging component 64 includes a connecting support plate 641 fixedly installed on the outside of the leftmost and rightmost hydraulic support columns 63. The connecting support plate 641 is hinged to the pressing roller 65 through a hinge plate 642 hinged thereon. The hinge plates 642 on the left and right sides are arranged in an eight-shaped manner.

[0039] Refer to Figure 6 and Figure 7A gear 643 is fixedly installed at the hinge of the hinge plate 642 and the connecting support plate 641, and a rack 644 is slidably arranged on the connecting support plate 641 in the vertical direction. A pressure plate 645 is fixedly installed on the upper end of the rack 644 and is slidably sleeved on the outside of the fixed section of the hydraulic support column 63. A compression spring is arranged between the pressure plate 645 and the lower part of the telescopic section of the hydraulic support column 63.

[0040] In the initial state, the compression spring is in a compressed state, so that the compression spring can push the pressing plate 645 upward through its own elastic force, so that the pressing plate 645 is embedded in the lower part of the mounting block 621, and the angle between the hinge plate 642 and the axial direction of the hydraulic support column 63 is small.

[0041] When the operator places the material sheet on the operating table 1 and makes the shearing position of the material sheet between the cutting edges of the upper blade 4 and the lower blade 5, the material sheet is located between the two limiting rollers 661, and the left and right directions of the material sheet are restricted by the two limiting rollers 661 to prevent the material sheet from being skewed.

[0042] At the same time, all the hydraulic support columns 63 are extended, so that the leftmost and rightmost hydraulic support columns 63 drive the connecting support plates 641 thereon to move downward synchronously, and the connecting support plates 641 drive the gears 643 to move downward synchronously through the hinged plates 642. During this process, the lower part of the compression spring moves downward with the telescopic section of the hydraulic support column 63, but because the compression spring is in a compressed state, the compression spring will become longer as a whole and its upper part will not move downward with the lower part, so that the gear 643 is engaged with the rack 644 and rotates clockwise, so that the gear 643 drives the hinged plate 642 and the axial direction of the hydraulic support column 63 to further reduce.

[0043] When the hinged plate 642 drives the pressure roller 65 to move downward until it contacts the material sheet, due to the material sheet blocking the pressure roller 65, the connecting support plate 641 drives the pressure roller 65 to press against the material sheet through the hinged plate 642 and move away from the middle of the operating table 1, so that the pressure roller 65 flattens the material sheet by pushing the material sheet outward, thereby preventing the material sheet from bending during shearing.

[0044] During the process of flattening the material sheet, the angle between the hinge plate 642 and the axial direction of the hydraulic support column 63 gradually increases, so that the hinge plate 642 pulls the rack 644 downward through the gear 643, and the rack 644 drives the pressing plate 645 to move synchronously, so that the pressing plate 645 presses the upper part of the compression spring, and the lower part of the compression spring moves downward with the hydraulic support column 63, so that the total length of the compression spring remains unchanged, and the compression spring is in a compressed state at this time, and the elastic force of the compression spring on the pressing plate 645 is used to ensure the resistance of the pressure roller 65 to the material sheet.

[0045] It should be noted that an anti-slip structure for increasing friction is provided on the outer side of the pressure roller 65. Through the friction force between the pressure roller 65 and the hinge plate 642, it is relatively difficult for the pressure roller 65 to rotate. Therefore, when the pressure roller 65 moves on the material plate, it can push the material plate. And when the material plate is flattened, the pressure roller 65 overcomes the friction force with the hinge plate 642, causing the pressure roller 65 to roll on the material plate to prevent scratching the material plate.

[0046] After that, the telescopic section of the hydraulic support column 63 moves downward to abut against the material plate, thereby pressing and fixing the material plate on the operating table 1.

[0047] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in

[0048] Refer to Figure 2 and

[0049] Refer to Figure 2 、 Figure 3 and Figure 4 As shown in

[0050] In the initial state, the upper blade 4 is in an inclined posture with the left side high and the right side low, so that the upper blade 4 drives the rectangular block structure of the rotating member 31 to be in an inclined posture as well. And the upper spring telescopic rod 333 pushes the right end of the fixed rod 331 downward to deflect, and the upper spring telescopic rod 333 is in a compressed state. The rotating member 31 drives the right lower end surface of the arc plate 311 to abut against the right part of the arc groove 312 to prevent the upper spring telescopic rod 333 from pushing the fixed rod 331 to deflect excessively through its elastic force.

[0051] Refer to Figure 2 、 Figure 4 and Figure 5, two locking posts 334 are slidably arranged along the radial direction on the inner side of the cylindrical structure of the rotating member 31. A helical spring is arranged between the two locking posts 334. Two jacks which are symmetrically arranged up and down and both inclined to the left are opened on the inner side of the feed plate 2. A lever 335 which extends backward to the rear part of the feed plate 2 is fixedly installed at the rear side of the locking post 334. Fixed plates 336 for pushing the lever 335 are fixedly installed on the upper side of the cross plate 332 and the inner wall of the top end of the operating table 1.

[0052] In the initial state, the upper lever 335 is in contact with the upper fixed plate 336. There is an included angle between the axis of the upper locking post 334 and the axis of the upper jack, while the axis of the lower locking post 334 is collinear with the axis of the lower jack. Thus, the helical spring pushes the lower locking post 334 to insert into the lower jack through its own elastic force, thereby locking the rotating member 31 and the feed plate 2 together, and making the rotation angle of the tool rest plate 32 and the upper blade 4 fixed.

[0053] When the hydraulic support column 63 abuts against the material plate, the feed plate 2 is moved downward through the hydraulic power assembly. The feed plate 2 drives the upper blade 4 to move downward synchronously through the rotating member 31 and the tool rest plate 32, so that the right side of the cutting edge of the upper blade 4 contacts the material plate first. When the upper blade 4 contacts the material plate, the telescopic section of the extending hydraulic cylinder 313 is extended, so that the hydraulic cylinder 313 drives the upper blade 4 to move slightly and horizontally to the right along the length direction of the tool rest plate 32 through the tool rest plate 32, so that the upper blade 4 gradually contacts the plate material in a skiving manner during the initial shearing, dispersing the local impact force, not only reducing the damage of the instantaneous load to the blade, but also improving the smoothness and stability of the shearing process.

[0054] Subsequently, the upper blade 4 and the lower blade 5 cooperate to start the complete plate shearing operation on the material plate. Since the contact length between the blade and the material is relatively long when the upper blade just contacts the steel plate, the initial shearing force reaches the peak value. As the blade cuts into the material plate, the contact length gradually decreases, resulting in a corresponding reduction in the shearing force. Thus, during the shearing process, the impact of the material plate on the upper blade 4 gradually decreases, making the impact force received by the upper blade 4 during the initial shearing and the shearing process relatively close, and then effectively ensuring uniform wear of the cutting edge of the upper blade 4, making full use of the upper blade 4 and increasing its service life.

[0055] When the cutting edge on the left side of the upper blade 4 moves to the lower part of the lower blade 5, one-time plate shearing of the material plate is completed. Subsequently, the feed plate 2 is continuously moved downward, so that the feed plate 2 drives the fixed rod 331 to move to contact with the lower spring telescopic rod 333 through the rotating member 31, and the fixed rod 331 compresses the lower spring telescopic rod 333.

[0056] Subsequently, the lower lever 335 contacts the lower fixed plate 336, causing the lower fixed plate 336 to push the lower lever 335 upward by reaction force, so that the lower lever 335 drives the lower locking column 334 to withdraw from the interior of the lower jack, thereby enabling the rotating member 31 to be no longer locked. Subsequently, the spring telescopic rod 333 pushes the fixed rod 331 upward by its own elastic force, causing the fixed rod 331 to drive the rotating member 31 to rotate. The rotating member 31 drives the left lower end face of the arc-shaped plate 311 to abut against the left part of the arc-shaped groove 312. At the same time, the rotating member 31 drives the tool rest plate 32 and the upper blade 4 to rotate to an inclined posture with the left lower and right higher.

[0057] When the tool rest plate 32 and the upper blade 4 are in an inclined posture with the left lower and right higher, the axis of the lower locking column 334 driven by the rotating member 31 rotates to form an angle with the axis of the lower jack, while the axis of the upper locking column 334 is collinear with the axis of the upper jack. Thus, the spiral spring pushes the upper locking column 334 into the interior of the upper jack by its own elastic force, thereby locking the rotating member 31 and the feed plate 2 together again, and fixing the rotation angle of the tool rest plate 32 and the upper blade 4.

[0058] Subsequently, the feed plate 2 is moved upward by the hydraulic power assembly, causing the feed plate 2 to drive the upper blade 4 to move above the lower blade 5, and making the fixed rod 331 located at a position where it does not contact the upper spring telescopic rod 333. Subsequently, the hydraulic support column 63 is contracted to the initial position.

[0059] Refer to Figure 1 and Figure 6 , on the upper side of the horizontal section of the U-shaped frame 61, a moving plate 67 is slidably arranged left and right. A plurality of lifting frames 671 arranged vertically and slidably are equidistantly arranged on the moving plate 67 in the left-right direction. A leveling roller 672 is rotatably arranged at the lower part of the lifting frame 671. A guide plate 673 for guiding the lifting frame 671 is slidably arranged on the operating table 1 in the vertical direction.

[0060] In this embodiment, as Figure 6 shown, the lifting frame 671 has an inverted U-shaped structure. A pushing spring is arranged between the moving plate 67 and the horizontal section of the corresponding lifting frame 671. A convex column 674 is fixedly installed on the front side of the vertical section at the rear of the lifting frame 671. Inverted V-shaped grooves corresponding to the lifting frames 671 one by one are equidistantly opened on the guide plate 673 in the left-right direction. An electric cylinder 675 for pushing the moving plate 67 is fixedly installed on the right side of the operating table 1. An adjusting screw rod 676 threadedly engaged with the operating table 1 is rotatably connected to the right side of the guide plate 673.

[0061] In the initial state, the lifting frame 671 drives the protruding column 674 thereon to be located at the position of the inverted V-shaped groove. The pushing spring upwardly pushes the lifting frame 671 through its own elastic force, so that the lifting frame 671 drives the protruding column 674 to be caught inside the inverted V-shaped groove. The operator manually rotates the adjusting screw 676 in advance according to the thickness of the stock plate, so that the adjusting screw 676 drives the guide plate 673 to adjust the position up and down.

[0062] When the retractable hydraulic support column 63 is retracted to the initial position, the telescopic section of the reciprocating telescopic electric cylinder 675 is actuated, so that the electric cylinder 675 drives the moving plate 67 to move left and right. The moving plate 67 drives all the lifting frames 671 to move left and right synchronously. The lifting frame 671 moves along the hypotenuse of the inverted V-shaped groove through the protruding column 674 thereon, so that when the lifting frame 671 moves horizontally, it drives the leveling roller 672 to press down against the stock plate, thereby moving the leveling roller 672 to the position pressed by the hydraulic support column 63, and eliminating the indentation caused by the hydraulic support column 63 on the stock plate by rolling, ensuring the quality of the stamping parts.

[0063] Subsequently, the leveling roller 672 is moved to the initial position by the telescopic electric cylinder 675. The operator manually moves the stock plate backward, and then the stock plate is sheared again. The left side of the cutting edge of the upper blade 4 first contacts the stock plate, and by retracting the telescopic section of the hydraulic cylinder 313, the upper blade 4 is moved slightly horizontally to the left, so that the two cutting edges of the upper blade 4 alternately bear the initial shearing impact force, further ensuring uniform wear of the cutting edge of the upper blade 4, making full use of the upper blade 4, and increasing its service life.

[0064] After the upper blade 4 cuts off the stock plate, after secondary shearing, the feeding plate 2 is moved upward to the initial position, so that the lower blade 5 is rotated again to the posture of left high and right low, and then the inclined posture of the lower blade 5 is automatically switched after each shearing, making full use of the upper blade 4 and reducing the replacement frequency.

[0065] Refer to Figures 1 to 7 , when the present invention shears the stock plate, the following steps are further included: First step, the operator places the stock plate on the operating table 1, so that the stock plate moves from front to back between the lower blade 5 and the upper blade 4, and the left and right directions of the stock plate are restricted by two limiting rollers 661 to prevent the stock plate from skewing.

[0066] Second step, all the hydraulic support columns 63 are simultaneously extended, so that the leftmost and rightmost hydraulic support columns 63 drive the pressure rollers 65 to press against the stock plate. Subsequently, the hydraulic support columns 63 drive the pressure rollers 65 to push the stock plate outward, thereby flattening the stock plate. The telescopic section of the hydraulic support column 63 moves downward to press against the stock plate.

[0067] In the third step, the feeding plate 2 is moved downward through the hydraulic power assembly. The feeding plate 2 drives the right side of the cutting edge of the upper blade 4 to contact the material plate first, and the telescopic section of the hydraulic cylinder 313 is extended, so that the upper blade 4 gradually contacts the plate material in a skiving manner during the initial shearing.

[0068] In the fourth step, the cutting edge on the left side of the upper blade 4 moves to the lower part of the lower blade 5, and the first shearing of the material plate is completed. Subsequently, the feeding plate 2 continues to move downward, so that the spring telescopic rod 333 pushes the upper blade 4 to rotate to an inclined posture with the left side lower and the right side higher.

[0069] In the fifth step, the feeding plate 2 is moved upward through the hydraulic power assembly, so that the feeding plate 2 drives the upper blade 4 to move to the upper part of the lower blade 5, and the fixed rod 331 is located at a position where it does not contact the upper spring telescopic rod 333. Subsequently, the hydraulic support column 63 is contracted to the initial position.

[0070] In the sixth step, the telescopic section of the reciprocating telescopic electric cylinder 675 is extended and retracted, so that the lifting frame 671 drives the leveling roller 672 to move to the position where the material plate is pressed by the hydraulic support column 63, and the indentation caused by the hydraulic support column 63 on the material plate is eliminated by rolling to ensure the quality of the stamping parts.

[0071] In the seventh step, the leveling roller 672 is moved to the initial position, the material plate is moved backward, and then the material plate is sheared again. After that, the feeding plate 2 is moved upward to the initial position, so that the lower blade 5 rotates to an inclined posture with the left side higher and the right side lower again. Furthermore, the inclined posture of the lower blade 5 is automatically switched after each shearing, making full use of the upper blade 4 and reducing the replacement frequency.

[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A shearing device for automotive hardware stamping parts, including an operating table, characterized in that, On the operating table, a feed plate is slid up and down through a hydraulic power assembly. The feed plate is provided with an upper blade through an adjusting mechanism for changing the inclination direction. A lower blade is fixedly installed on the operating table. A finishing mechanism for leveling the material plate is arranged on the operating table. The adjusting mechanism includes a rotating member rotatably arranged on the feed plate. The front part of the rotating member is in a rectangular block structure and the rear part is in a cylindrical structure. A tool rest plate is slidably arranged on the rectangular block structure of the rotating member. The lower end of the front side of the tool rest plate is connected to the upper blade by means of a bolt connection. The adjusting mechanism further includes a linkage assembly for controlling the inclination direction of the upper blade to change after each plate cutting. The finishing mechanism includes a U-shaped frame fixedly installed on the operating table. A number of hydraulic support columns arranged at equal intervals in the left-right direction are provided at the lower part of the U-shaped frame through a connecting assembly. Pressing rollers for pushing and flattening the material plate are arranged on the leftmost and rightmost hydraulic support columns through a swinging assembly.

2. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that The linkage assembly includes a fixed rod fixedly installed on the right side of the rear end of the rotating member. A cross plate is fixedly installed on the operating table and below the fixed rod. Spring telescopic rods for pushing the fixed rod are fixedly installed on the upper side of the cross plate and the inner wall of the top end of the operating table.

3. A shearing device for automotive hardware stamping parts according to claim 2, characterized in that, Two locking columns are slidably arranged radially inside the cylindrical structure of the rotating member. A spiral spring is arranged between the two locking columns. Two jacks which are symmetrically arranged up and down and both inclined to the left are opened on the inner side of the feed plate.

4. The shearing device for automotive hardware stamping parts according to claim 3, characterized in that, A dial rod extending backward to the rear part of the feed plate is fixedly installed on the rear side of the locking column. Fixed plates for pushing the dial rod are fixedly installed on the upper side of the cross plate and the inner wall of the top end of the operating table.

5. The shearing device for automotive hardware stamping parts according to claim 1, characterized in that, An arc-shaped plate in a semi-circular shape is fixedly installed on the upper end of the outer side of the cylindrical structure of the rotating member. An arc-shaped groove for the arc-shaped plate to rotate and at the same time for blocking the arc-shaped plate is opened on the feed plate. A hydraulic cylinder is arranged between the rectangular block structure of the rotating member and the tool rest plate.

6. The shearing device for automotive hardware stamping parts according to claim 1, characterized in that, The connecting assembly includes a mounting block arranged on the lower side of the horizontal section of the U-shaped frame. The lower side of the mounting block is fixedly connected to the corresponding hydraulic support column. A bidirectional screw rod is rotatably arranged on the operating table. The bidirectional screw rod is threadedly connected to the mounting blocks at the rightmost and leftmost parts.

7. The shearing device for automotive hardware stamping parts according to claim 6, characterized in that, Two sliding blocks which are symmetrically arranged left and right are slidably arranged on the left and right of the lower blade. A limiting roller is rotatably arranged on the upper side of the sliding block. A linkage plate threadedly connected to the bidirectional screw rod is fixedly installed on the side of the sliding block away from the middle of the operating table.

8. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that, The swinging assembly includes connecting support plates fixedly installed on the outer sides of the leftmost and rightmost hydraulic support columns. The connecting support plates are hinged to the pressing rollers through hinge plates hinged thereto. The hinge plates on the left and right sides are arranged in a V-shaped layout.

9. The shearing device for automotive hardware stamping parts according to claim 8, wherein, A gear is fixedly installed at the hinge joint of the hinge plate and the connecting support plate. A rack is slidably arranged in the vertical direction on the connecting support plate. The upper end of the rack is fixedly installed with a pressing plate which is slidably sleeved on the outer side of the fixed section of the hydraulic support column. A compression spring is arranged between the pressing plate and the lower part of the telescopic section of the hydraulic support column.

10. The shearing device for automotive hardware stamping parts according to claim 1, characterized in that, A moving plate is slidably arranged on the upper side of the horizontal section of the U-shaped frame. A number of lifting frames arranged in the up-down direction at equal intervals in the left-right direction are arranged on the moving plate. A leveling roller is rotatably arranged at the lower part of the lifting frame. A guide plate for guiding the lifting frame is slidably arranged in the vertical direction on the operating table.

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