Plate limiting mechanism of bending machine

Abstract

The utility model relates to the technical field of bending machine accessories, in particular to a plate limiting mechanism of a bending machine, which comprises a bending machine body, and a clamping mechanism and a releasing mechanism are arranged on the bending machine body; the clamping mechanism comprises two first sliding grooves formed in the bending machine body, the two first sliding grooves are slidably connected with clamping plates correspondingly, and the two clamping plates are driven by a first driving mechanism and can move in the opposite directions. One side of the non-return block is a first right-angle surface, and the other side is a first inclined surface; a locking rod is connected to the clamping plate in a sliding manner; one side of the locking rod is a second right-angle face, and the other side of the locking rod is a second inclined face matched with the first inclined face. According to the plate bending device, plate clamping can be achieved through gear and rack transmission, limiting is achieved through cooperation of the locking rod and the non-return block, limiting is rapidly relieved through linkage of the pedal plate and the non-return plate and the pop-up spring, and the bending precision and the production efficiency can be improved.

Description

Technical Field

[0001] This application relates to the technical field of bending machine accessories, and in particular to a sheet metal limiting mechanism for a bending machine. Background Technology

[0002] In the sheet metal bending process, to ensure bending accuracy, a limiting mechanism is needed to accurately position and firmly clamp the sheet metal. Most existing sheet metal limiting mechanisms use mechanical clamping methods, such as tightening bolts or using hydraulic cylinders to push clamping blocks. However, these traditional limiting mechanisms have some shortcomings. When it is necessary to release the clamping of the sheet metal, the operation is cumbersome. For example, using bolts requires loosening each bolt individually, which is time-consuming; using hydraulic cylinders to push clamping blocks requires slowly releasing hydraulic pressure, which takes a long time, resulting in low sheet metal loading and unloading efficiency, and consequently affecting the overall production efficiency of the bending process.

[0003] A search revealed Chinese Patent Publication No. CN110695231A, which discloses a clamp for a bending machine, comprising a hydraulic device, guide rails, a fixed base, a clamp, a protective cover, a control box, a base, a rotating device, and a movable seat. The hydraulic device and control box are installed on the rear side of the base, with the control box located to the left of the hydraulic device. The fixed base is fixed to the upper end of the base, and two slide rails are fixedly installed inside the fixed base. The bottom end of the movable seat is provided with a slide rail that cooperates with the guide rails, and the movable seat moves above the guide rails. A rotating device is installed above the fixed base, and the clamp is connected to the inside of the rotating device. The top of the base is provided with a sliding groove, and the protective cover moves above the sliding groove.

[0004] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks: the operation of releasing the workpiece from clamping in the prior art is cumbersome, thus affecting production efficiency. This application aims to solve the problems of cumbersome and inefficient release operations in the sheet metal limiting mechanism of the bending machine in the prior art. Through improvements such as gear and rack transmission clamping, locking rod and check block cooperation for limiting, and foot pedal linkage for rapid spring reset, the technical effects of stable sheet metal clamping and efficient loading and unloading are achieved. Utility Model Content

[0005] In order to improve the efficiency of plate loading and unloading and the processing accuracy of bending machines, this application provides a plate limiting mechanism for bending machines.

[0006] This application provides a sheet metal limiting mechanism for a bending machine, employing the following technical solution: It includes a bending machine body, on which a clamping mechanism and a release mechanism are provided. The clamping mechanism includes two first sliding grooves formed in the bending machine body, with clamping plates slidably connected to each groove. The two clamping plates are driven by a first driving mechanism, enabling them to move towards each other. The release mechanism includes a check valve assembly and a release assembly. The check valve assembly includes a check valve plate slidably connected vertically to the bending machine body, with a check valve block on the plate. One side of the check valve block is a first right-angled surface, and the other side is a first inclined surface. A locking rod is slidably connected to the clamping plate. One side of the locking rod is a second right-angled surface, and the other side is a second inclined surface adapted to the first inclined surface. The first driving mechanism drives the two clamping plates to move towards each other, thereby limiting the sheet metal. The release mechanism quickly releases the clamping plates from limiting the sheet metal, thus improving loading and unloading efficiency.

[0007] Optionally, the clamping plate is provided with a sliding cylinder, and a first compression spring is provided between the top wall of the sliding cylinder and the upper end face of the locking rod.

[0008] Optionally, the bending machine body is symmetrically provided with two vertical first slide rails, and the check plate is provided with a first sliding block adapted to the first slide rails.

[0009] Optionally, the bending machine body is provided with a first spring cylinder, the first spring cylinder is slidably connected to a first spring rod, and a second compression spring is provided between the lower end face of the first spring rod and the bottom wall of the first spring cylinder.

[0010] Optionally, a connecting part is fixedly provided on the first spring rod, and the connecting part is fixedly connected to the two check plates.

[0011] Optionally, the pop-out assembly includes a pop-out rod disposed on the side of the clamping plate facing the axis of the bending machine body; the first sliding groove is provided with a pop-out hole adapted to the pop-out rod, and a pop-out spring is disposed in the pop-out hole.

[0012] Optionally, the first drive mechanism includes a gear rotatably connected to the bending machine body, and an upper rack and a lower rack slidably connected to the bending machine body; the upper rack and the lower rack are both meshed with the gear; and each of the upper rack and the lower rack is provided with a drive plate that can abut against the axial surface of the corresponding clamping plate facing away from the bending machine.

[0013] Optionally, a foot pedal is fixedly provided on the peripheral wall of the first spring rod.

[0014] Optionally, a rotating handwheel is coaxially fixed to one end face of the gear facing away from the bending machine body.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. This utility model utilizes a gear and rack transmission clamping mechanism. Rotating the handwheel drives two clamping plates to move synchronously in opposite directions, achieving rapid clamping of the sheet metal. Simultaneously, the engagement mechanism of the inclined and right-angled surfaces of the locking rod and the check block (the second right-angled surface of the locking rod engages with the first right-angled surface of the check block) forms a one-way lock, preventing the clamping plates from automatically releasing due to processing vibrations or other external forces. This ensures accurate positioning and secure clamping of the sheet metal during bending, thereby improving bending accuracy and processing stability.

[0017] 2. This utility model features a foot pedal-linked check valve assembly. The operator simply needs to press down on the foot pedal to quickly lower the check valve plate via the first spring rod and connecting part, releasing the check valve block's restriction on the locking rod. Simultaneously, the pop-out spring of the pop-out assembly automatically releases its elastic potential energy upon release of the restriction, driving the clamping plate to quickly return to its original position, eliminating the need for manual operation of each component (such as loosening bolts or waiting for hydraulic release). This significantly shortens the loading and unloading time of the sheet metal and improves overall production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0019] Figure 2 This is a structural schematic diagram from an overall top-down view of an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the main components in the embodiments of this application;

[0021] Figure 4 This is a schematic diagram of the check plate in an embodiment of this application.

[0022] Reference numerals in the attached drawings: 1. Bending machine body; 2. First sliding groove; 3. Clamping plate; 4. Check plate; 5. Check block; 6. First right-angled surface; 7. First inclined surface; 8. Locking rod; 9. Second right-angled surface; 10. Second inclined surface; 11. Sliding cylinder; 12. First slide rail; 13. First spring cylinder; 14. First spring rod; 15. Connecting part; 16. Foot pedal; 17. Elastic rod; 18. Gear; 19. Upper rack; 20. Lower rack; 21. Drive plate; 22. Rotating handwheel. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] This application discloses a sheet metal limiting mechanism for a bending machine. For example... Figure 1 As shown, the device includes a bending machine body 1, which is equipped with a clamping mechanism and a release mechanism. The clamping mechanism includes two first sliding grooves 2 formed in the bending machine body 1, and clamping plates 3 are slidably connected to the two first sliding grooves 2 respectively. The two clamping plates 3 are driven by a first driving mechanism and can move towards each other. The release mechanism includes a check assembly and a ejection assembly. The check assembly includes a check plate 4 slidably connected to the bending machine body 1 vertically. The check plate 4 is provided with multiple check blocks 5. One side of the check block 5 is a first right angle surface 6, and the other side is a first inclined surface 7. A locking rod 8 is slidably connected to the clamping plate 3. One side of the locking rod 8 is a second right angle surface 9, and the other side is a second inclined surface 10 adapted to the first inclined surface 7.

[0025] In this embodiment, when the plate needs to be limited, the first driving mechanism drives the two clamping plates 3 to move towards each other, and at the same time, the locking rod 8 moves towards the inside of the bending machine body 1 along with the corresponding clamping plate 3. When the second inclined surface 10 on the locking rod 8 abuts against the first inclined surface 7 on the check block 5, the locking rod 8 slides upward and avoids the check block 5. When the locking rod 8 does not contact the check block 5, the locking rod 8 moves downward. The second right-angled surface 9 on the locking rod 8 and the first right-angled surface 6 on the check block 5 cooperate to restrict the locking rod 8 from moving outward, thereby preventing the clamping plates 3 from loosening and restricting the plate.

[0026] When it is necessary to release the plate from the limit, the check plate 4 slides down, the check block 5 can no longer limit the locking rod 8, and the pop-out component pops the two clamping plates 3 outward, releasing the clamping plates 3 from the plate.

[0027] Please see Figure 1 A sliding cylinder 11 is provided on the clamping plate 3, and a first compression spring is provided between the top wall of the sliding cylinder 11 and the upper end face of the locking rod 8.

[0028] In this embodiment, when the locking rod 8 moves upward by abutting against the check block 5, it compresses the first compression spring; when the locking rod 8 is not in contact with the check block 5, the elastic restoring force of the first compression spring drives the check block 5 to move downward.

[0029] In this embodiment, two vertical first slide rails 12 are symmetrically arranged on the bending machine body 1, and a first sliding block adapted to the first slide rails 12 is provided on the check plate 4; a first spring cylinder 13 is provided on the bending machine body 1, and a first spring rod 14 is slidably connected to the first spring cylinder 13; a second compression spring is provided between the lower end face of the first spring rod 14 and the bottom wall of the first spring cylinder 13; a connecting part 15 is fixedly provided on the first spring rod 14, and the connecting part 15 is fixedly connected to the two check plates 4; a foot pedal 16 is fixedly provided on the peripheral wall of the first spring rod 14.

[0030] In this embodiment, the initial state of the second compression spring can lift the check plate 4 to the working position through the first spring rod 14 and the connecting part 15;

[0031] When it is necessary to release the restriction on the plate, the operator steps down on the foot pedal 16, the first spring rod 14 moves downward and compresses the second compression spring. As the first spring rod 14 descends, it drives the two check plates 4 to slide downward through the connecting part 15, thereby releasing the restriction of the check block 5 on the locking rod 8, and then releasing the restriction of the clamping plate 3 on the plate.

[0032] Please see Figure 3 The ejection assembly includes an ejection rod 17 disposed on the side of the clamping plate 3 facing the axis of the bending machine body 1; an ejection hole adapted to the ejection rod 17 is provided in the first sliding groove 2, and an ejection spring is disposed in the ejection hole; the first drive mechanism includes a gear 18 rotatably connected to the bending machine body 1, and an upper rack 19 and a lower rack 20 slidably connected to the bending machine body 1; the upper rack 19 and the lower rack 20 are both meshed with the gear 18; each of the upper rack 19 and the lower rack 20 is provided with a drive plate 21 that can abut against the axis of the corresponding clamping plate 3 facing away from the bending machine; a rotating handwheel 22 is coaxially fixedly disposed on one end face of the gear 18 facing away from the bending machine body 1;

[0033] In this embodiment, when it is necessary to limit the plate, the gear 18 drives the upper rack 19 and the lower rack 20 to move in opposite directions through the corresponding drive plate 21 by rotating the handwheel 22, thereby limiting the plate.

[0034] While the two clamping plates 3 move in opposite directions, they compress the ejection springs in the corresponding ejection holes through the corresponding ejection rods 17.

[0035] When the limit on the clamping plate 3 is released, the elastic restoring force of the pop-out spring drives the clamping plate 3 to move outward through the pop-out rod 17, thereby moving away from the plate.

[0036] The implementation principle of the sheet metal limiting mechanism of a bending machine according to an embodiment of this application is as follows:

[0037] The operator rotates the rotating handwheel 22, which is fixed coaxially with the gear 18. The gear 18 rotates synchronously and meshes to drive the upper rack 19 and the lower rack 20 to slide along the bending machine body 1. The upper rack 19 and the lower rack 20 push the two clamping plates 3 to move in opposite directions in the first sliding groove 2 through their respective drive plates 21 until the clamping plates 3 clamp the plate.

[0038] When the clamping plate 3 moves, it drives the locking rod 8 to move synchronously towards the inside of the bending machine body 1. When the second inclined surface 10 of the locking rod 8 abuts against the first inclined surface 7 of the check block 5, the locking rod 8 slides upward under the pressure of the inclined surface, compressing the first compression spring in the sliding cylinder 11, thereby avoiding the check block 5. After the locking rod 8 passes the check block 5, the first compression spring recovers its elasticity, driving the locking rod 8 to reset downward, so that the second right-angle surface 9 of the locking rod 8 fits against the first right-angle surface 6 of the check block 5, restricting the clamping plate 3 from moving outward, and completing the firm positioning of the plate. When the clamping plates 3 move towards each other, the ejector rod 17 on its inner side extends into the ejector hole of the first sliding groove 2, compressing the ejector spring, and storing elastic potential energy for the ejector action when the limit is released later.

[0039] When it is necessary to release the restriction on the sheet metal, the operator steps down on the foot pedal 16, causing the first spring rod 14 to slide downwards within the first spring cylinder 13, compressing the second compression spring. The first spring rod 14 simultaneously pulls the two check plates 4 downwards along the first slide rail 12 through the connecting part 15, causing the first right-angled surface 6 of the check block 5 to disengage from the second right-angled surface 9 of the locking rod 8, thus releasing the restriction on the locking rod 8. After the lock is released, the pop-out spring releases its elastic potential energy, pushing the clamping plate 3 outwards through the pop-out rod 17, quickly moving it away from the sheet metal, completing the reset of the clamping plate 3. At this time, the operator can easily remove the bent sheet metal and enter the next processing cycle.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sheet metal limiting mechanism for a bending machine, comprising a bending machine body, characterized in that: The bending machine body is provided with a clamping mechanism and a release mechanism; the clamping mechanism includes two first sliding grooves formed in the bending machine body, and clamping plates are slidably connected to the two first sliding grooves respectively. The two clamping plates are driven by a first driving mechanism and can move towards each other; the release mechanism includes a check component and a ejection component; the check component includes a check plate slidably connected vertically to the bending machine body, and a check block is provided on the check plate. One side of the check block is a first right-angled surface, and the other side is a first inclined surface; a locking rod is slidably connected to the clamping plate; one side of the locking rod is a second right-angled surface, and the other side is a second inclined surface adapted to the first inclined surface.

2. The sheet metal limiting mechanism of a bending machine according to claim 1, characterized in that: A sliding cylinder is provided on the clamping plate, and a first compression spring is provided between the top wall of the sliding cylinder and the upper end face of the locking rod.

3. The sheet metal limiting mechanism of a bending machine according to claim 1, characterized in that: The bending machine body is symmetrically provided with two vertical first slide rails, and the check plate is provided with a first sliding block that is adapted to the first slide rails.

4. The sheet metal limiting mechanism of a bending machine according to claim 3, characterized in that: The bending machine body is provided with a first spring cylinder, and a first spring rod is slidably connected to the first spring cylinder. A second compression spring is provided between the lower end face of the first spring rod and the bottom wall of the first spring cylinder.

5. The sheet metal limiting mechanism of a bending machine according to claim 4, characterized in that: A connecting part is fixedly provided on the first spring rod, and the connecting part is fixedly connected to two check plates.

6. The sheet metal limiting mechanism of a bending machine according to claim 1, characterized in that: The pop-out assembly includes a pop-out rod disposed on the side of the clamping plate facing the axis of the bending machine body; a pop-out hole adapted to the pop-out rod is disposed in the first sliding groove, and a pop-out spring is disposed in the pop-out hole.

7. The sheet metal limiting mechanism of a bending machine according to claim 1, characterized in that: The first driving mechanism includes a gear rotatably connected to the bending machine body, and an upper rack and a lower rack slidably connected to the bending machine body; both the upper rack and the lower rack mesh with the gear; and each of the upper rack and the lower rack is provided with a driving plate that can abut against the axial surface of the corresponding clamping plate facing away from the bending machine.

8. The sheet metal limiting mechanism of a bending machine according to claim 5, characterized in that: A foot pedal is fixedly installed on the peripheral wall of the first spring rod.

9. The sheet metal limiting mechanism of a bending machine according to claim 7, characterized in that: A rotating handwheel is coaxially fixed to one end face of the gear facing away from the bending machine body.

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