Sheet metal bending and shearing device

Abstract

The utility model discloses a sheet metal bending shearing device, including support plate frame structure and opening, support plate frame structure is equipped with bending frame and shearing frame, and the bending frame top middle is equipped with first oil cylinder, and first oil cylinder power end extends to the inside of bending frame and is equipped with first lifting frame, and the bottom of first lifting frame is equipped with the bending cutter of alignment opening, the bottom of shearing frame is equipped with second oil cylinder, and second oil cylinder top power end extends to the inside of shearing frame and is equipped with second lifting frame, and the top of second lifting frame is equipped with the shearing cutter of alignment bending cutter. The utility model has the advantages compared with prior art: the processing efficiency is promoted, and bending and shearing integrated design do not need to transport workpiece, save twice equipment debugging and transport time, and single processing cycle is shortened, cost and space optimization: replace two sets of independent equipment with single equipment, and equipment procurement cost is reduced, and production space occupation is reduced, is suitable for small and medium scale processing factory use.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, specifically to a sheet metal bending and shearing device. Background Technology

[0002] Sheet metal processing is a processing technology that can be defined as a comprehensive cold processing technology for thin metal sheets, including shearing, punching / cutting / combined cutting, bending, riveting, splicing, forming, etc.

[0003] In the sheet metal processing process, bending and shearing of sheet metal are usually set up separately, and it is not possible to perform sheet metal bending and shearing operations in one piece. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sheet metal bending and shearing device, addressing the shortcomings mentioned in the background art.

[0005] To solve the above technical problems, the technical solution provided by this utility model is as follows: a sheet metal bending and shearing device, including a support plate frame structure, an opening in the middle of the top of the support plate frame structure, a bending frame above the opening on the top of the support plate frame structure, a first hydraulic cylinder in the middle of the top of the bending frame, a first lifting frame extending from the power end of the first hydraulic cylinder to the inner side of the bending frame, and a bending cutter aligned with the opening at the bottom of the first lifting frame.

[0006] The support frame structure has a shearing frame located below the opening. The bottom of the shearing frame has a second hydraulic cylinder. The top power end of the second hydraulic cylinder extends to the inside of the shearing frame and has a second lifting frame. The top of the second lifting frame has a shearing blade aligned with the bending blade.

[0007] Furthermore, the first lifting frame is provided with first limiting posts on both sides of the top, and the top of the first lifting frame is provided with a first linear bearing that fits into the first limiting posts.

[0008] Furthermore, the second lifting frame is provided with second limiting posts on both sides of its bottom, and the bottom of the shearing frame is provided with a second linear bearing that is sleeved with the second limiting posts.

[0009] Furthermore, the first lifting frame is provided with auxiliary clamping structures on the front and rear sides. The auxiliary clamping structures include an equipment box, a third hydraulic cylinder is provided in the middle of the equipment box, and a lifting pressure plate is provided at the bottom of the third hydraulic cylinder extending to the bottom of the equipment box.

[0010] Furthermore, the lifting and pressing plate is provided with third limiting posts on both sides of the top, and the bottom of the equipment box is provided with a third linear bearing that is sleeved with the third limiting posts.

[0011] Furthermore, a rubber pad is provided at the bottom of the lifting and pressing plate.

[0012] The advantages of this sheet metal bending and shearing device compared with the prior art are: improved processing efficiency, integrated bending and shearing design, no need to transfer workpieces, saving two equipment debugging and transfer times, and shortening the single processing cycle.

[0013] Cost and space optimization: A single unit replaces two independent sets of equipment, reducing equipment procurement costs and production space requirements, making it suitable for small and medium-sized processing plants. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a sheet metal bending and shearing device.

[0015] Figure 2 This is a cross-sectional structural diagram of a sheet metal bending and shearing device.

[0016] Figure 3 This is a cross-sectional structural diagram of a sheet metal bending and shearing device.

[0017] As shown in the figure: 1. Support frame structure; 2. Bending frame; 3. First hydraulic cylinder; 4. First lifting frame; 5. Bending cutter; 6. Opening; 7. First limiting post; 8. First linear bearing; 9. Shearing frame; 10. Second hydraulic cylinder; 11. Second lifting frame; 12. Shearing cutter; 13. Second limiting post; 14. Second linear bearing; 15. Auxiliary clamping structure; 16. Equipment box; 17. Third hydraulic cylinder; 18. Lifting and pressing plate; 19. Third limiting post; 20. Third linear bearing; 21. Rubber pad. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Combined with appendix Figure 1-3 A sheet metal bending and shearing device includes a support frame structure 1, which serves as the basic support component of the device. An opening 6 is provided in the middle of its top. The opening 6 not only provides clearance space for the bending cutter 5 (to avoid interference with the support frame structure 1 during bending), but also provides a working channel for the upward cutting of the shearing cutter 12, ensuring that the bending and shearing processes are completed in the same station.

[0020] Bending mechanism: A bending frame 2 is fixedly installed on the top of the support plate frame structure 1 directly above the opening 6. The bending frame 2 has a "door" shaped structure, and a first hydraulic cylinder 3 (as a bending power source) is fixedly installed in the middle of its top. The power end (piston rod) of the first hydraulic cylinder 3 extends vertically downward to the inside of the bending frame 2 and is fixedly connected to the first lifting frame 4. A bending cutter 5 is detachably fixed to the bottom of the first lifting frame 4 by bolts, and the center of the blade of the bending cutter 5 is precisely aligned with the central axis of the opening 6 to ensure the coaxiality of the bending position and the subsequent cutting position.

[0021] The bottom of the support frame structure 1 is fixedly provided with a shearing frame 9 directly below the opening 6. The shearing frame 9 has a "groove" shaped structure, and a second hydraulic cylinder 10 (as a shearing power source) is fixedly installed in the middle of its bottom. The power end (piston rod) of the second hydraulic cylinder 10 extends vertically upward to the inside of the shearing frame 9 and is fixedly connected to the second lifting frame 11. The top of the second lifting frame 11 is detachably fixed with a shearing blade 12 by bolts, and the center of the blade of the shearing blade 12 is precisely aligned with the center of the blade of the bending blade 5 (coaxiality error ≤ 0.1mm) to ensure that the target part after bending can be accurately cut during shearing.

[0022] The first lifting frame 4 has first limiting posts 7 symmetrically fixed on both sides of its top, and the bending frame 2 has a first linear bearing 8 fixedly installed on its top at the position corresponding to the first limiting posts 7. The first limiting posts 7 and the first linear bearing 8 slide together to restrict the movement direction of the first lifting frame 4 (moving only in the vertical direction), so as to avoid the bending cutter 5 from deviating when it descends and to ensure bending accuracy.

[0023] The second lifting frame 11 is symmetrically fixed with second limiting posts 13 on both sides of its bottom. The bottom of the shearing frame 9 is fixedly installed with a second linear bearing 14 at the position corresponding to the second limiting posts 13. The second limiting posts 13 and the second linear bearing 14 slide together to limit the movement direction of the second lifting frame 11, prevent the shearing cutter 12 from deviating when it rises, and ensure accurate shearing position.

[0024] The first lifting frame 4 is symmetrically equipped with auxiliary clamping structures 15 on both its front and rear sides for shearing the pre-fixed workpiece and preventing workpiece displacement. The auxiliary clamping structure 15 includes an equipment box 16 (fixed to the side of the first lifting frame 4). A third hydraulic cylinder 17 (as a clamping power source) is fixedly installed in the middle of the equipment box 16. The power end (piston rod) of the third hydraulic cylinder 17 extends vertically downward to the bottom of the equipment box 16 and is fixedly connected to the lifting pressure plate 18. The top two sides of the lifting pressure plate 18 are symmetrically fixed with third limiting posts 19. The bottom of the equipment box 16 is fixedly installed with a third linear bearing 20 corresponding to the position of the third limiting posts 19 to ensure that the lifting pressure plate 18 rises and falls smoothly. In addition, a rubber pad 21 is adhered to the bottom of the lifting pressure plate 18 to prevent the metal pressure plate from directly contacting the workpiece surface, preventing scratches or indentations on the workpiece, while enhancing the clamping friction and improving the fixing effect.

[0025] The following is in conjunction with the appendix Figure 1-3 The specific usage process and working principle of this utility model will be further explained in detail below:

[0026] (I) Equipment Debugging (Initial Preparation)

[0027] Check the hydraulic systems of each cylinder (first cylinder 3, second cylinder 10, third cylinder 17) to ensure they are functioning properly, with no oil leaks and stable pressure.

[0028] Confirm the coaxiality of bending tool 5 and shearing tool 12: Measure the deviation of the cutting edge center of the two tools using a dial indicator;

[0029] Check the clearance between each limit post and the linear bearing: ensure that the first limit post 7, the second limit post 13, and the third limit post 19 slide smoothly in the corresponding linear bearing without any jamming.

[0030] Check the adhesion of rubber pad 21: If the rubber pad is worn or falls off, replace it in time to avoid damage to the workpiece surface.

[0031] (II) Processing Operation Steps

[0032] Workpiece positioning: Place the thin metal sheet workpiece (thickness ≤ 6mm) to be processed flat on the top of the support frame structure 1. By visual inspection or tooling positioning blocks, align the part of the workpiece that needs to be bent or cut with the top of the opening 6 (i.e., the top of the axis of the bending tool 5 and the shearing tool 12) to ensure accurate processing position.

[0033] Sheet metal bending operation: The first cylinder 3 of the bending frame 2 is activated, and the piston rod of the first cylinder 3 extends downward, driving the first lifting frame 4 to descend smoothly along the first limit post 7 (in conjunction with the first linear bearing 8); the bending cutter 5 at the bottom of the first lifting frame 4 moves down accordingly to bend the workpiece (the bending angle can be adjusted by controlling the extension length of the piston rod of the first cylinder 3. For example, when a 90° bend is required, the piston rod is set to extend until the bending cutter 5 contacts the workpiece and is pressed down to the preset position); during the bending process, the opening 6 provides sufficient clearance for the bending cutter 5 to avoid collision with the support frame structure 1.

[0034] Sheet metal cutting operation: First, clamp and fix the workpiece. Then, start the third cylinder 17 of the auxiliary clamping structure 15. The piston rod of the third cylinder 17 extends downward and pushes the lifting pressure plate 18 vertically down along the third limit post 19 (in conjunction with the third linear bearing 20). When the rubber pad 21 at the bottom of the lifting pressure plate 18 contacts the surface of the workpiece and generates a certain pressure (the pressure value can be adjusted by the hydraulic system, usually set to 0.5-1MPa to avoid damaging the workpiece), the third cylinder 17 stops moving and the workpiece is firmly fixed.

[0035] Maintain the clamping state of the third cylinder 17 (to prevent workpiece displacement), first start the first cylinder 3 so that the bending cutter 5 abuts against the workpiece, and then start the second cylinder 10 of the shearing frame 9; the piston rod of the second cylinder 10 extends upward, driving the second lifting frame 11 to rise smoothly along the second limit post 13 (in conjunction with the second linear bearing 14); the shearing cutter 12 at the top of the second lifting frame 11 moves upward accordingly, working in conjunction with the bending cutter 5 above to precisely cut the bent part of the workpiece (the shearing force is adjusted by the hydraulic system to ensure that the workpiece is cut off in one go and to avoid burrs; specifically, the extension length of the first cylinder 3 is controlled according to the sheet metal thickness).

[0036] Workpiece removal and equipment reset: After shearing is completed, control the hydraulic cylinder to reset in the following sequence:

[0037] The piston rod of the second hydraulic cylinder 10 is retracted, causing the shearing cutter 12 to descend to its initial position.

[0038] The piston rod of the first hydraulic cylinder 3 is retracted, which drives the bending cutter 5 to rise to the initial position.

[0039] The piston rod of the third hydraulic cylinder 17 retracts, causing the lifting and pressing plate 18 to rise to the initial position.

[0040] Finally, the processed workpiece is removed manually or by a robotic arm, completing a full bending and shearing operation.

[0041] (III) Precautions

[0042] Before processing, the hydraulic system pressure needs to be adjusted according to the workpiece material (such as stainless steel or aluminum alloy): Stainless steel has high hardness, so the bending and shearing pressure needs to be increased appropriately; aluminum alloy is softer, so the pressure needs to be reduced to avoid workpiece deformation.

[0043] Regularly add lubricating oil to each linear bearing to ensure smooth sliding of moving parts;

[0044] If tool deviation or jamming occurs during processing, the equipment must be stopped immediately, the fit between the limit pin and the linear bearing must be checked, and the fault must be eliminated before continuing to use the equipment.

[0045] When changing to workpieces of different specifications, the coaxiality of the bending tool and the shearing tool must be recalibrated, and the clamping position of the auxiliary clamping structure must be adjusted to ensure that it is compatible with the workpiece size.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sheet metal bending and shearing device, comprising a support frame structure (1), characterized in that: The support plate frame structure (1) has an opening (6) in the middle of its top. The support plate frame structure (1) has a bending frame (2) above the opening (6) at its top. The bending frame (2) has a first oil cylinder (3) in the middle of its top. The power end of the first oil cylinder (3) extends to the inside of the bending frame (2) and has a first lifting frame (4). The bottom of the first lifting frame (4) has a bending cutter (5) aligned with the opening (6). The support frame structure (1) is provided with a shearing frame (9) below the opening (6). The bottom of the shearing frame (9) is provided with a second oil cylinder (10). The top power end of the second oil cylinder (10) extends to the inside of the shearing frame (9) and is provided with a second lifting frame (11). The top of the second lifting frame (11) is provided with a shearing blade (12) aligned with the bending blade (5).

2. The sheet metal bending and shearing device according to claim 1, characterized in that: The first lifting frame (4) has first limiting posts (7) on both sides of its top, and the top of the first lifting frame (4) has a first linear bearing (8) that fits and sleeves the first limiting posts (7).

3. The sheet metal bending and shearing device according to claim 1, characterized in that: The second lifting frame (11) is provided with second limiting posts (13) on both sides of the bottom, and the shearing frame (9) is provided with a second linear bearing (14) that is sleeved on the second limiting posts (13) at the bottom.

4. The sheet metal bending and shearing device according to claim 1, characterized in that: The first lifting frame (4) is provided with auxiliary clamping structures (15) on the front and rear sides. The auxiliary clamping structure (15) includes an equipment box (16). The equipment box (16) is provided with a third oil cylinder (17) in the middle. The bottom of the third oil cylinder (17) extends to the bottom of the equipment box (16) and is provided with a lifting pressure plate (18).

5. A sheet metal bending and shearing device according to claim 4, characterized in that: The lifting and pressing plate (18) is provided with third limiting posts (19) on both sides of the top, and the equipment box (16) is provided with a third linear bearing (20) that is sleeved on the third limiting posts (19) at the bottom.

6. A sheet metal bending and shearing device according to claim 4, characterized in that: The bottom of the lifting and pressing plate (18) is provided with a rubber pad (21).

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