A shearing equipment for automotive hardware stamping parts

Abstract

This invention relates to the field of hardware manufacturing, specifically to a shearing equipment for automotive hardware stamping parts. It includes an operating table with a feed plate that slides up and down on it via a hydraulic power assembly. The feed plate has an upper blade mounted on it via an adjustment mechanism to change its tilt direction. A lower blade is fixedly mounted on the operating table. A leveling mechanism for the material plate is also provided on the operating table. This invention, through the cooperation of a linkage component and a rotating component in the adjustment mechanism, automatically changes the tilt direction of the upper blade after each shearing operation, ensuring that the blade's entire length participates in the shearing operation evenly, avoiding excessive wear at a single location, and significantly extending the service life of the upper blade. Simultaneously, the adjustment mechanism drives the blade holder plate to slide via a hydraulic cylinder, allowing the upper blade to gradually contact the material plate in a sliding cutting manner during the initial shearing, dispersing localized impact forces, reducing damage to the blade from instantaneous loads, and improving the smoothness and stability of the shearing process.

Description

Technical Field

[0001] This invention relates to the field of hardware manufacturing, specifically to a shearing equipment for automotive hardware stamping parts. Background Technology

[0002] Automotive metal stamping parts are made by stamping metal sheets. Before stamping, the sheet metal needs to be cut to a fixed length to meet the stamping requirements. Currently, common shearing equipment usually uses hydraulic support columns to press and fix the sheet metal, and the upper blade on the cutter holder is driven by a hydraulic power unit to cooperate with the lower blade on the operating table to complete the shearing.

[0003] To improve shearing efficiency, existing technologies often design the upper blade as an inclined structure, using a slanted shearing method to gradually cut the sheet metal, thereby reducing shearing resistance and improving cut smoothness. However, this design still has significant drawbacks in practical applications: Firstly, the inclined upper blade experiences a large impact force due to localized force concentration when initially contacting the sheet metal, while the force gradually decreases during subsequent shearing. This uneven load distribution accelerates the wear of the blade tip, i.e., the downward-sloping end of the upper blade, resulting in a shortened blade life, failure to fully utilize the entire blade length, and increased equipment maintenance costs.

[0004] Secondly, existing hydraulic support columns can only press and fix the sheet metal vertically. If the sheet metal itself is bent or warped, it cannot be effectively flattened during the shearing process, resulting in uneven cuts, burrs, or cracks, which seriously affects the quality of the stamped parts. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a shearing equipment for automotive hardware stamping parts, including an operating table, a feed plate that is slidably mounted on the operating table via a hydraulic power assembly, an upper blade mounted on the feed plate via an adjustment mechanism for changing the tilt direction, a lower blade fixedly mounted on the operating table, and a sorting mechanism for leveling the material plate on the operating table.

[0006] The adjustment mechanism includes a rotating component rotatably mounted on the feed plate. The front part of the rotating component has a rectangular block structure and the rear part has a cylindrical structure. A blade holder plate is slidably mounted on the rectangular block structure of the rotating component. The lower front end of the blade holder plate is connected to the upper blade by bolts. The adjustment mechanism also includes a linkage component that controls the upper blade to change its tilt direction after each shearing.

[0007] The sorting mechanism includes a U-shaped frame fixedly installed on the operating table. The lower part of the U-shaped frame is provided with several hydraulic support columns arranged at equal intervals in the left and right directions through a connecting component. The leftmost and rightmost hydraulic support columns are provided with pressure rollers for pushing and flattening the material plate through a swing component.

[0008] Preferably, the linkage component includes a fixed rod fixedly installed on the right side of the rear end of the rotating component, a horizontal plate fixedly installed on the operating table below the fixed rod, and spring telescopic rods for pushing the fixed rod fixedly installed on the upper side of the horizontal plate and on the inner wall of the top of the operating table.

[0009] Preferably, the inner side of the cylindrical structure of the rotating component has two locking posts that slide radially, and a helical spring is provided between the two locking posts. The inner side of the feed plate has two symmetrically arranged insertion holes that are both tilted to the left.

[0010] Preferably, a lever extending rearward to the rear of the feed plate is fixedly installed on the rear side of the locking pin, and a fixing plate for pushing the lever is fixedly installed on the upper side of the horizontal plate and the inner wall of the top of the operating table.

[0011] Preferably, a semi-circular arc plate is fixedly installed on the upper outer side of the cylindrical structure of the rotating component, and an arc groove is provided on the feed plate for the arc plate to rotate and for blocking the arc plate. A hydraulic cylinder is provided between the rectangular block structure of the rotating component and the tool holder plate.

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

[0013] Preferably, the lower blade is provided with two symmetrically arranged sliding blocks, each with a limit roller rotatably mounted on its upper side, and a linkage plate threadedly connected to a bidirectional screw is fixedly installed on the side of the sliding block away from the center of the operating table.

[0014] Preferably, the swing 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 pressure rollers through hinge plates hinged to them, and the hinge plates on the left and right sides are arranged in a figure-eight shape.

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

[0016] Preferably, a movable plate is slidably arranged on the upper side of the horizontal section of the U-shaped frame, and several lifting frames are equidistantly arranged vertically on the movable plate along the left and right directions. A leveling roller is rotatably arranged at the lower part of the lifting frame, and a guide plate for guiding the lifting frame is slidably arranged on the operating table along the vertical direction.

[0017] The beneficial effects of this invention are as follows: First, by cooperating with the linkage component and rotating component in the adjustment mechanism, this invention automatically changes the tilt direction of the upper blade after each shearing, so that the blade is evenly involved in the shearing operation along its entire length, avoiding excessive wear in a single position and significantly extending the service life of the upper blade. At the same time, the adjustment mechanism drives the blade holder plate to slide through the hydraulic cylinder, so that the upper blade gradually contacts the plate in a sliding cutting manner during the initial shearing, dispersing the local impact force, which reduces the damage to the blade from the instantaneous load and improves the smoothness and stability of the shearing process.

[0018] Second, this invention utilizes the coordinated action of the hydraulic support column and the swing assembly in the sorting mechanism. During the pressing process of the material plate under the hydraulic support column, the figure-eight swing structure formed by 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 and ensuring that the material plate is in a flat state before shearing. The pressure roller can also eliminate stress concentration during the shearing process, greatly improving the flatness of the cut and the quality of the finished product.

[0019] Third, this invention uses a bidirectional screw and a sliding block in the connecting assembly to drive the limiting roller to slide left and right along the lower blade, thereby achieving automatic centering and limiting of plates of different widths, avoiding shearing deviation, ensuring the accuracy of cutting, and through the movement and 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 to eliminate indentations on the material plate, further ensuring the quality of the stamped finished product. Attached Figure Description

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

[0021] Figure 1 This is a schematic diagram of the first overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the second overall structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the operating table, the tool holder plate, the upper blade, and the limiting roller in this invention.

[0024] Figure 4 This is a partial rear view of the tool holder plate, arc plate, rotating component, and lever in this invention.

[0025] Figure 5 This is a partial cross-sectional view of the tool holder plate, rotating component, and locking pin in this invention.

[0026] Figure 6 This is a partial structural diagram of the operating table and sorting mechanism in this invention.

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

[0028] In the diagram: 1. Control panel; 2. Feed plate; 3. Adjustment mechanism; 4. Upper blade; 5. Lower blade; 6. Finishing mechanism; 31. Rotating component; 32. Blade holder plate; 33. Linkage assembly; 61. U-shaped frame; 62. Connecting 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. Horizontal plate 333. Spring telescopic rod; 334. Locking post; 335. Toggle lever; 336. Fixing plate; 621. Mounting block; 622. Bidirectional screw; 641. Connecting support plate; 642. Hinge 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 post; 675. Electric cylinder; 676. Adjusting screw. Detailed Implementation

[0029] The embodiments of the present invention are 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 limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0030] See Figure 1 , Figure 2 and Figure 3 A shearing machine for stamping automotive hardware parts includes an operating table 1. A feed plate 2 is slidably mounted on the operating table 1 via a hydraulic power assembly. An upper blade 4 is mounted on the feed plate 2 via an adjustment mechanism 3 for changing the tilt direction. A lower blade 5 is fixedly mounted on the operating table 1. A sorting mechanism 6 for leveling the material plate is provided on the operating table 1.

[0031] When shearing the material plate is required, 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. Then, the material plate is first flattened by the sorting mechanism 6 to prevent the material plate from bending. Then, the sorting mechanism 6 presses and fixes the material plate on the operating table 1. After that, the feed plate 2 is controlled to move downward by the hydraulic power assembly, so that the feed plate 2 drives the upper blade 4 to perform the shearing operation on the material plate through the adjustment mechanism 3.

[0032] Then, the tilt direction of the upper blade 4 is changed by the adjustment mechanism 3, and the upper blade 4 is moved upward to the upper part of the lower blade 5 by the hydraulic power assembly. Then the material plate is moved backward, and then the upper blade 4 is moved downward again, thereby performing a continuous shearing operation on the material plate.

[0033] See Figure 1 , Figure 6 and Figure 7 The sorting mechanism 6 includes a U-shaped frame 61 fixedly installed on the operating table 1. The lower part of the U-shaped frame 61 is provided with several hydraulic support columns 63 arranged at equal intervals in the left and right directions through the connecting component 62. The leftmost and rightmost hydraulic support columns 63 are provided with pressure rollers 65 for pushing and flattening the material plate through the swing component 64.

[0034] Continue reading Figure 1 , Figure 6 and Figure 7 The connecting component 62 includes a mounting block 621 disposed 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 disposed on the operating table 1. The bidirectional screw 622 is threadedly connected to the rightmost and leftmost mounting blocks 621.

[0035] It should be noted that the rightmost and leftmost mounting blocks 621 are slidably connected to the horizontal section of the U-shaped frame 61, while 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 without engaging with it.

[0036] See Figure 1 , Figure 3 and Figure 6 The lower blade 5 has two symmetrically arranged sliding blocks 66 that slide left and right. A limit roller 661 is rotatably installed on the upper side of the sliding block 66. A linkage plate 662 that is 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 shearing the material plate is required, the operator manually rotates the bidirectional screw 622 according to the left and right width of the material plate. This causes the bidirectional screw 622 to drive the rightmost and leftmost mounting blocks 621 and the two linkage plates 662 to adjust their positions left and right. As a result, the linkage plates 662 drive 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 rightmost and leftmost mounting blocks 621 drive the hydraulic support columns 63 on them to move to the left and right edges of the material plate, thereby pressing and fixing the edges of the material plate.

[0038] See Figure 1 , Figure 6 and Figure 7 The swing assembly 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 pressure roller 65 through a hinge plate 642 hinged on it. The hinge plates 642 on the left and right sides are arranged in a figure-eight shape.

[0039] See Figure 6 and Figure 7A gear 643 is fixedly installed at the hinge joint between the hinge plate 642 and the connecting support plate 641. A rack 644 is slidably installed on the connecting support plate 641 along the vertical direction. A pressing plate 645 is fixedly installed at 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 provided between the pressing 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 compressed, which allows the compression spring to push the pressure plate 645 upward through its own elastic force, so that the pressure plate 645 is fitted into the lower part of the mounting block 621, while the axial angle between the hinge plate 642 and the hydraulic support column 63 is small.

[0041] When the operator places the material plate on the operating table 1, and the cutting position of the material plate is between the cutting edges of the upper blade 4 and the lower blade 5, the material plate is placed between the two limiting rollers 661. The two limiting rollers 661 restrict the left and right directions of the material plate to prevent the material plate from tilting.

[0042] Simultaneously, all hydraulic support columns 63 extend, causing the leftmost and rightmost hydraulic support columns 63 to drive the connecting support plates 641 on them to move downwards synchronously. The connecting support plates 641 drive the gears 643 to move downwards synchronously through the hinge plates 642. During this process, the lower part of the compression spring moves downwards with the extension section of the hydraulic support column 63. However, since the compression spring is in a compressed state, the compression spring will lengthen as a whole, while its upper part will not move downwards with the lower part. This causes the gears 643 to mesh with the rack 644 and rotate clockwise, thereby further reducing the axial angle between the hinge plates 642 and the hydraulic support columns 63 driven by the gears 643.

[0043] When the hinge plate 642 drives the pressure roller 65 to move downwards to contact the material plate, the material plate blocks the pressure roller 65, causing the connecting support plate 641 to drive the pressure roller 65 to abut against the material plate through the hinge plate 642 and move away from the center of the operating table 1. This allows the pressure roller 65 to flatten the material plate by pushing it outwards, preventing the material plate from bending during shearing.

[0044] During the flattening process, the axial angle between the hinge plate 642 and the hydraulic support column 63 gradually increases, causing the hinge plate 642 to pull the rack 644 downward through the gear 643. The rack 644 drives the pressing plate 645 to move synchronously, thereby pressing the upper part of the compression spring with the pressing plate 645, while the lower part of the compression spring moves downward with the hydraulic support column 63. This keeps the total length of the compression spring unchanged, and the compression spring is in a compressed state. The elastic force of the compression spring on the pressing plate 645 ensures the contact force between the pressure roller 65 and the material plate.

[0045] It should be noted that the outer side of the pressure roller 65 is provided with an anti-slip structure to increase friction. Through the friction between the pressure roller 65 and the hinge plate 642, it is difficult for the pressure roller 65 to rotate. This allows the pressure roller 65 to push the material plate when it moves on the material plate. After the material plate is flattened, the pressure roller 65 overcomes the friction between itself and the hinge plate 642, allowing the pressure roller 65 to roll on the material plate and preventing scratches on the material plate.

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

[0047] See Figure 1 , Figure 2 and Figure 3 The adjustment mechanism 3 includes a rotating component 31 rotatably mounted on the feed plate 2. The front part of the rotating component 31 has a rectangular block structure and the rear part has a cylindrical structure. A blade holder plate 32 is slidably mounted on the rectangular block structure of the rotating component 31. The lower front end of the blade holder plate 32 is connected to the upper blade 4 by bolts. The adjustment mechanism 3 also includes a linkage component 33 that controls the upper blade 4 to change its tilt direction after each shearing.

[0048] See Figure 2 The linkage component 33 includes a fixed rod 331 fixedly installed on the right side of the rear end of the rotating component 31. A horizontal plate 332 is fixedly installed on the operating table 1 and below the fixed rod 331. A spring telescopic rod 333 for pushing the fixed rod 331 is fixedly installed on the upper side of the horizontal plate 332 and on the inner wall of the top of the operating table 1.

[0049] See Figure 2 , Figure 3 and Figure 4 A semi-circular arc plate 311 is fixedly installed on the upper outer side of the cylindrical structure of the rotating component 31. An arc groove 312 is provided on the feed plate 2 to allow the arc plate 311 to rotate and to block the arc plate 311. A hydraulic cylinder 313 is provided between the rectangular block structure of the rotating component 31 and the tool holder plate 32.

[0050] In the initial state, the upper blade 4 is in an inclined position with the left side higher than the right side, which causes the rectangular block structure of the rotating component 31 driven by the upper blade 4 to also be in an inclined position. The upper spring telescopic rod 333 pushes the right end of the fixed rod 331 downward and deflects it downward. The upper spring telescopic rod 333 is in a compressed state. The rotating component 31 drives the lower right side of the arc plate 311 to abut against the right side of the arc groove 312, preventing the upper spring telescopic rod 333 from pushing the fixed rod 331 to deflect excessively through its elastic force.

[0051] See Figure 2 , Figure 4 and Figure 5Two locking pins 334 are slidably arranged radially on the inner side of the cylindrical structure of the rotating component 31. A helical spring is provided between the two locking pins 334. Two symmetrically arranged insertion holes with leftward inclination are opened on the inner side of the feed plate 2. A lever 335 extending to the rear of the feed plate 2 is fixedly installed on the rear side of the locking pins 334. Fixing plates 336 for pushing lever 335 are fixedly installed on the upper side of the horizontal plate 332 and the inner wall of the top of the operating table 1.

[0052] In the initial state, the upper lever 335 is in contact with the upper fixing plate 336, and there is an angle between the axis of the upper locking pin 334 and the axis of the upper insertion hole. Meanwhile, the axis of the lower locking pin 334 is collinear with the axis of the lower insertion hole. This causes the helical spring to push the lower locking pin 334 into the lower insertion hole through its own elastic force, thereby locking the rotating part 31 and the feed plate 2 together, and fixing the rotation angle of the tool holder plate 32 and the upper blade 4.

[0053] When the hydraulic support column 63 abuts against the material plate, the feed plate 2 moves downward through the hydraulic power assembly. The feed plate 2 drives the upper blade 4 to move downward synchronously through the rotating component 31 and the blade holder 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 extension section of the hydraulic cylinder 313 extends, so that the hydraulic cylinder 313 drives the upper blade 4 to move slightly to the right along the length direction of the blade holder plate 32 through the blade holder plate 32. This allows the upper blade 4 to gradually contact the material plate in a sliding cutting manner during the initial shearing, dispersing the local impact force, which reduces the damage to the blade from the instantaneous load, and improves the smoothness and stability of the shearing process.

[0054] Subsequently, the upper blade 4 and the lower blade 5 work together to perform a complete shearing operation on the material plate. Since the contact length between the blade and the material is relatively long when the upper blade first contacts the steel plate, the initial shearing force reaches its peak. As the blade cuts into the material plate, the contact length gradually decreases, resulting in a corresponding decrease in shearing force. This reduces the impact of the material plate on the upper blade 4 during the shearing process, making the impact force on the upper blade 4 at the beginning and during the shearing process more similar. This effectively ensures uniform wear on 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 shearing of the material plate is completed. Then the feed plate 2 continues to move downward, so that the feed plate 2 drives the fixed rod 331 to move through the rotating part 31 to contact the lower spring telescopic rod 333, and so that the fixed rod 331 compresses the lower spring telescopic rod 333.

[0056] Then, the lower lever 335 contacts the lower fixing plate 336, causing the lower fixing plate 336 to push the lower lever 335 upward through the reaction force. This causes the lower lever 335 to drive the lower locking pin 334 out of the lower insertion hole, thus making the rotating part 31 no longer locked. Subsequently, the spring telescopic rod 333 pushes the fixing rod 331 upward through its own elasticity, causing the fixing rod 331 to drive the rotating part 31 to rotate. The rotating part 31 causes the lower left end face of the arc plate 311 to abut against the left side of the arc groove 312. At the same time, the rotating part 31 causes the tool holder plate 32 and the upper blade 4 to rotate to an inclined posture with the left side lower and the right side higher.

[0057] When the tool holder plate 32 and the upper blade 4 are tilted with the left side lower and the right side higher, the rotating component 31 drives the axis of the lower locking pin 334 to rotate to an angle with the axis of the lower insertion hole, while the axis of the upper locking pin 334 is collinear with the axis of the upper insertion hole. This causes the helical spring to push the upper locking pin 334 into the upper insertion hole through its own elastic force, thereby locking the rotating component 31 and the feed plate 2 together again, and fixing the rotation angle of the tool holder plate 32 and the upper blade 4.

[0058] Then, the feed plate 2 is moved upward by the hydraulic power assembly, so that the feed plate 2 drives the upper blade 4 to move above the lower blade 5, and the fixed rod 331 is positioned in a position that does not contact the upper spring telescopic rod 333. Then, the hydraulic support column 63 is retracted to the initial position.

[0059] See Figure 1 and Figure 6 A movable plate 67 is slidably arranged on the upper side of the horizontal section of the U-shaped frame 61. Several lifting frames 671 are slidably arranged on the movable plate 67 at equal intervals along the left and right directions. A leveling roller 672 is rotatably arranged at the lower part of the lifting frame 671. A guide plate 673 is slidably arranged on the operating table 1 along the vertical direction to guide the lifting frame 671.

[0060] In this embodiment, as Figure 6 As shown, the lifting frame 671 has an inverted U-shaped structure. A push spring is provided between the moving plate 67 and the corresponding horizontal section of the lifting frame 671. A protruding column 674 is fixedly installed on the front side of the vertical section at the rear of the lifting frame 671. The guide plate 673 has inverted V-shaped grooves that are equally spaced along the left and right directions and correspond one-to-one with the lifting frame 671. 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 676 that is threadedly connected to the right side of the guide plate 673 is rotatably connected to the operating table 1.

[0061] In the initial state, the lifting frame 671 drives the protruding column 674 on it to be positioned in the inverted V-shaped groove. The push spring pushes the lifting frame 671 upward through its own elastic force, so that the lifting frame 671 drives the protruding column 674 to be inserted into the inverted V-shaped groove. The operator manually rotates the adjusting screw 676 according to the thickness of the material plate in advance, so that the adjusting screw 676 drives the guide plate 673 to adjust its position up and down.

[0062] When the hydraulic support column 63 is retracted to the initial position, the reciprocating telescopic section of the electric cylinder 675 extends, causing the electric cylinder 675 to move the moving plate 67 left and right. The moving plate 67 then moves all the lifting frames 671 left and right synchronously. The lifting frames 671 move along the inclined side of the inverted V-shaped groove via the protruding column 674 on them. When the lifting frames 671 move laterally, they drive the leveling roller 672 to press down against the material plate, thereby moving the leveling roller 672 to the position pressed by the hydraulic support column 63. The rolling process eliminates the indentation caused by the hydraulic support column 63 on the material plate, ensuring the quality of the stamped parts.

[0063] Subsequently, the leveling roller 672 is moved to the initial position by the telescopic electric cylinder 675. The operator manually moves the material plate backward and then shears the material plate again, so that the left side of the cutting edge of the upper blade 4 contacts the material plate first. By retracting the telescopic section of the hydraulic cylinder 313, the upper blade 4 moves slightly to the left. Thus, the two sides 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 the material plate, it performs a second shearing and moves the feed plate 2 upward to the initial position, causing the lower blade 5 to rotate to a left-high-right-low posture. This automatically changes the tilt posture of the lower blade 5 after each shearing, making full use of the upper blade 4 and reducing the replacement frequency.

[0065] See Figures 1 to 7 The present invention further includes the following steps when shearing the material plate:

[0066] The first step is for the operator to place 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. The left and right directions of the material plate are restricted by two limiting rollers 661 to prevent the material plate from tilting.

[0067] The second step involves simultaneously extending all the hydraulic support columns 63, so that the leftmost and rightmost hydraulic support columns 63 drive the pressure rollers 65 to abut against the material plate. Subsequently, the hydraulic support columns 63 drive the pressure rollers 65 to push the material plate outward, thereby flattening the material plate. The telescopic section of the hydraulic support column 63 moves downward to abut against the material plate.

[0068] The third step involves moving the feed plate 2 downwards via the hydraulic power assembly. The feed plate 2 causes the right side of the cutting edge of the upper blade 4 to first contact the material plate, extending the telescopic section of the hydraulic cylinder 313, so that the upper blade 4 gradually contacts the material plate in a sliding cutting manner during the initial shearing.

[0069] 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, completing one shearing of the material plate. Then, the feed plate 2 continues to move downward, causing the spring telescopic rod 333 to push the upper blade 4 to rotate to an inclined posture with the left side lower and the right side higher.

[0070] Fifth step, the feed plate 2 is moved upward by the hydraulic power assembly, so that the feed plate 2 drives the upper blade 4 to move to the upper part of the lower blade 5, and the fixed rod 331 is in a position that does not contact the upper spring telescopic rod 333. Then the hydraulic support column 63 is retracted to the initial position.

[0071] The sixth step involves the extension and retraction section of the reciprocating telescopic electric cylinder 675, which causes the lifting frame 671 to drive the leveling roller 672 to move to the position where the material plate is pressed by the hydraulic support column 63. The rolling process eliminates the indentations caused by the hydraulic support column 63 on the material plate, ensuring the quality of the stamped parts.

[0072] Step 7: Move the leveling roller 672 to the initial position, move the material plate backward, and then shear the material plate again. Then move the feed plate 2 upward to the initial position, so that the lower blade 5 rotates to the left-high-right-low posture again. After each shearing, the tilt posture of the lower blade 5 is automatically changed to make full use of the upper blade 4 and reduce the replacement frequency.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A shearing machine for automotive hardware stamping parts, comprising an operating table, characterized in that, A feed plate is mounted on the control panel and slides up and down via a hydraulic power assembly. The feed plate is equipped with an upper blade via an adjustment mechanism to change its tilt direction. A lower blade is fixedly mounted on the control panel. A sorting mechanism for leveling the material plate is also provided on the control panel. The adjustment mechanism includes a rotating component rotatably mounted on the feed plate. The front part of the rotating component has a rectangular block structure and the rear part has a cylindrical structure. A blade holder plate is slidably mounted on the rectangular block structure of the rotating component. The lower front end of the blade holder plate is connected to the upper blade by bolts. The adjustment mechanism also includes a linkage component that controls the upper blade to change its tilt posture after each shearing. The blade tilt posture is either left high and right low or left low and right high. The sorting mechanism includes a U-shaped frame fixedly installed on the operating table. The lower part of the U-shaped frame is provided with several hydraulic support columns arranged at equal intervals in the left and right directions through a connecting component. The leftmost and rightmost hydraulic support columns are provided with pressure rollers for pushing and flattening the material plate through a swing component. The linkage component includes a fixed rod fixedly installed on the right side of the rear end of the rotating part, and a horizontal plate fixedly installed on the operating table below the fixed rod. Spring telescopic rods for pushing the fixed rod are fixedly installed on the upper side of the horizontal plate and on the inner wall of the top of the operating table.

2. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that, The cylindrical structure of the rotating component has two locking pins that slide radially along its inner side, and a helical spring is provided between the two locking pins. The inner side of the feed plate has two symmetrically arranged insertion holes that are both tilted to the left.

3. The shearing equipment for automotive hardware stamping parts according to claim 2, characterized in that, A lever extending rearward to the rear of the feed plate is fixedly installed on the rear side of the locking pin, and a fixing plate for pushing the lever is fixedly installed on the upper side of the horizontal plate and the inner wall of the top of the operating table.

4. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that, The upper outer side of the cylindrical structure of the rotating component is fixedly installed with a semi-circular arc plate. The feed plate is provided with an arc groove for the arc plate to rotate and for blocking the arc plate. A hydraulic cylinder is provided between the rectangular block structure of the rotating component and the tool holder plate.

5. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that, The connecting assembly includes a mounting block disposed 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 disposed on the operating table. The bidirectional screw is threadedly connected to the rightmost and leftmost mounting blocks.

6. The shearing equipment for automotive hardware stamping parts according to claim 5, characterized in that, The lower blade is provided with two symmetrically arranged sliding blocks that slide left and right. A limit roller is rotatably provided on the upper side of the sliding blocks. A linkage plate that is threadedly connected to the bidirectional screw is fixedly installed on the side of the sliding blocks away from the center of the operating table.

7. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that, The swing 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 pressure rollers through hinge plates hinged to them. The hinge plates on the left and right sides are arranged in a figure-eight shape.

8. The shearing equipment for automotive hardware stamping parts according to claim 7, characterized in that, A gear is fixedly installed at the hinge joint between the hinge plate and the connecting support plate. A rack is slidably installed on the connecting support plate in the vertical direction. A pressing plate is fixedly installed at the upper end of the rack and is slidably sleeved on the outside of the fixed section of the hydraulic support column. A compression spring is installed between the pressing plate and the lower part of the telescopic section of the hydraulic support column.

9. The shearing equipment for automotive hardware stamping parts according to claim 1, characterized in that, A movable plate is slidably installed on the upper side of the horizontal section of the U-shaped frame. Several lifting frames are equidistantly arranged vertically on the movable plate along the left and right directions. A leveling roller is rotatably installed at the bottom of the lifting frame. A guide plate is slidably installed on the operating table along the vertical direction to guide the lifting frame.

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