A quick clamping device for bending machine

Abstract

The utility model relates to the field of bending machines and discloses a quick clamping device for bending machines, including an upper die of the bending machine, a first clamping assembly is arranged on one side of the upper die of the bending machine, the first clamping assembly includes a first shell, an eccentric wheel is rotatably connected in the first shell, a push block is arranged on one side of the eccentric wheel, and the push block is slidably connected in the first shell, a wedge block is arranged on one side of the push block, and a mounting frame is fixedly connected to the wedge block; the utility model adopts the first clamping assembly and the second clamping assembly to cooperate in clamping the upper die of the bending machine, the first clamping assembly adopts the eccentric wheel structure, which can ensure the firmness and stability of clamping, and when replacing the upper die of the bending machine with the same thickness, it is only necessary to simply turn the handle, which is simpler and more convenient than the existing clamping mechanism or bolt fixing, and the second clamping assembly of the utility model can prevent the upper die of the bending machine from falling after the first clamping assembly is loosened, so as to avoid the upper die of the bending machine from falling and being damaged, thereby improving the safety of the device.

Description

Technical Field

[0001] The utility model relates to the field of bending machines, in particular to a quick clamping device for bending machines. Background Art

[0002] A bending machine is a machine that can bend thin plates. The clamping device of the bending machine is widely used in various types of bending machines. It is a connecting device between the bending machine and the bending mold. It is installed on the bending machine for clamping the bending upper mold. The bending upper mold is installed between the connecting plate and the upper mold connecting plate. Since most of the existing bending machine upper molds are fastened and fixed by bolts, the installation and disassembly of the bending machine upper mold is complicated and the process is cumbersome, which wastes time and energy. At the same time, the clamping may not be firm, which may lead to the knife falling phenomenon, which brings inconvenience to the use, so it needs to be improved.

[0003] A Chinese utility model patent with announcement number CN 209998141 U discloses a quick clamping device for a bending machine. Through the cooperation of a T-shaped clamping rod, a first spring and a pull rod, the upper die of the bending machine can be initially clamped and fixed. Through the cooperation of a screw rod, a moving block, a through groove, a clamping plate and a clamping block, the upper die of the bending machine is further clamped and fixed, and the clamping and fixing effect is more solid. Through the arrangement of a T-shaped positioning block and a second spring, when the upper die of the bending machine is disassembled, the upper die of the bending machine is boosted, making the disassembly of the upper die of the bending machine faster and more convenient.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: First, in the process of disassembling and assembling the upper die of the bending machine, the pull rod and the rotary handle need to be operated separately, which results in cumbersome operation steps, and the use method of using the rotary handle to drive the screw is the same as that of the commonly used bolts. Therefore, the above-mentioned technology does not solve the problem of complicated operation caused by the use of bolts for fixing; Second, the above-mentioned technology assists the upper die of the bending machine by adding a second spring and a T-shaped positioning block, but in actual application, the upper die of the bending machine can fall directly under its own weight, and under the action of the elastic force of the second spring and the self-weight of the upper die of the bending machine, the upper die of the bending machine falls at a fast speed, which can easily cause damage to the upper die of the bending machine and injure the operator. Utility Model Content

[0005] In order to solve the technical problems that the clamping mechanism of the upper die of the bending machine is complicated to operate and the upper die of the bending machine is easy to fall and be damaged after the clamping mechanism is unlocked, the utility model provides a quick clamping device for the bending machine.

[0006] The utility model is implemented by the following technical scheme: a quick clamping device for a bending machine, comprising an upper die of the bending machine, a first clamping assembly is arranged on one side of the upper die of the bending machine, the first clamping assembly comprises a first shell, an eccentric wheel is rotatably connected in the first shell, a push block is arranged on one side of the eccentric wheel, and the push block is slidably connected in the first shell, a wedge block is arranged on one side of the push block, a mounting frame is fixedly connected to the wedge block, a first guide rod is slidably connected to the mounting frame, a first spring is sleeved on the first guide rod, and one end of the first spring is arranged on the mounting frame, and the other end is arranged in the first shell, two first positioning blocks are fixedly connected to the mounting frame, a positioning hole is opened at a position corresponding to the first positioning block on the upper die of the bending machine, and the first positioning block is arranged in the positioning hole.

[0007] Through the above technical solution, the first clamping assembly uses the eccentric wheel to push the push block, uses the push block to push the wedge block, uses the wedge block to drive the mounting frame, uses the mounting frame to install the first positioning block, uses the first positioning block to squeeze and fix the upper mold of the bending machine, the first spring is used to provide a reset elastic force for the mounting frame, the first guide rod is used to guide the mounting frame, and the positioning hole is used to accommodate the first positioning block.

[0008] As a further improvement of the above solution, a first through hole is provided on the first shell at a position corresponding to the first positioning block, and the first positioning block is sleeved in the first through hole.

[0009] Through the above technical solution, the first through hole is used to accommodate the first positioning block.

[0010] As a further improvement of the above scheme, a connecting shaft is fixedly connected to the eccentric wheel, and the connecting shaft is rotatably connected to the first shell, a handle is installed at one end of the connecting shaft, a nut is provided on one side of the handle, and the nut is threadedly connected to the connecting shaft.

[0011] Through the above technical solution, the eccentric wheel is installed by using the connecting shaft, the connecting shaft is driven by the handle, and the handle is squeezed and fixed on the connecting shaft by using the nut.

[0012] As a further improvement of the above solution, a limiting member is provided at the bottom end of the handle, and the limiting member is fixedly connected to the first shell.

[0013] Through the above technical solution, the handle is limited by the limiting member.

[0014] As a further improvement of the above scheme, a second clamping assembly is provided on the other side of the upper die of the bending machine, and the second clamping assembly is installed on the first shell, the second clamping assembly includes an adjusting screw, a slider, a second shell, a second through hole, a second guide rod, a connecting plate, a second positioning block and a second spring, the first shell is rotatably connected with an adjusting screw, the adjusting screw is threadedly connected with a slider, the slider is fixedly connected with the second shell, and the second shell is arranged on one side of the upper die of the bending machine, the second guide rod is fixedly connected in the second shell, the second guide rod is slidably connected with a connecting plate, the second guide rod is sleeved with a second spring, one end of the second spring is arranged in the second shell, and the other end is arranged on the connecting plate, the second positioning block is fixedly connected at the position corresponding to the positioning hole on the connecting plate, and the second positioning block is arranged in the positioning hole.

[0015] Through the above technical solution, the second clamping assembly uses the adjusting screw to drive the slider, thereby driving the second shell, so that the second shell squeezes and fixes the upper mold of the bending machine, the second spring is used to provide a reset elastic force for the connecting plate, the second guide rod is used to guide the connecting plate, the connecting plate is used to install the second positioning block, and the second positioning block is used to squeeze and fix the upper mold of the bending machine to prevent the upper mold of the bending machine from falling after the first clamping assembly is unlocked.

[0016] As a further improvement of the above solution, a second through hole is opened on the second shell at a position corresponding to the positioning hole, and the second positioning block is sleeved in the second through hole.

[0017] Through the above technical solution, the second through hole is used to accommodate the second positioning block.

[0018] As a further improvement of the above solution, a sliding groove is provided on the first shell, and the sliding block is slidably connected in the sliding groove.

[0019] Through the above technical solution, the slide block is guided by the slide groove.

[0020] Compared with the prior art, the beneficial effect of the utility model is that the utility model adopts the first clamping assembly and the second clamping assembly to cooperate in clamping the upper die of the bending machine. The first clamping assembly adopts an eccentric wheel structure, which can ensure the firmness and stability of the clamping, and when replacing the upper die of the bending machine with the same thickness, it is only necessary to simply turn the handle, which is simpler and more convenient than the existing clamping mechanism or bolt fixing. The second clamping assembly of the utility model can prevent the upper die of the bending machine from falling after the first clamping assembly is loosened, thereby avoiding the upper die of the bending machine from falling and being damaged, and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2It is a schematic diagram of the overall three-dimensional structure of the utility model from another angle;

[0023] Figure 3 It is a schematic diagram of the overall three-dimensional cutaway structure of the utility model;

[0024] Figure 4 for Figure 3 A magnified view of the structure in the middle A area;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the upper die of the bending machine of the utility model;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the first shell of the utility model;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the first housing of the utility model at another angle;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the second shell of the utility model.

[0029] Description of main symbols:

[0030] 1. Press brake upper die; 11. Positioning hole; 2. First clamping assembly; 21. First housing; 22. First through hole; 23. Eccentric wheel; 24. Connecting shaft; 25. Handle; 26. Nut; 27. Limiting piece; 28. Push block; 29. ​​Wedge block; 210. Mounting frame; 211. First guide rod; 212. First spring; 213. First positioning block; 214. Slide; 3. Second clamping assembly; 31. Adjusting screw; 32. Sliding block; 33. Second housing; 34. Second through hole; 35. Second guide rod; 36. Connecting plate; 37. Second positioning block; 38. Second spring. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] Embodiment 1:

[0033] Please combine Figure 1 - Figure 8A quick clamping device for a bending machine in this embodiment includes an upper die 1 of the bending machine, a first clamping assembly 2 is arranged on one side of the upper die 1 of the bending machine, the first clamping assembly 2 includes a first shell 21, an eccentric wheel 23 is rotatably connected in the first shell 21, a push block 28 is arranged on one side of the eccentric wheel 23, and the push block 28 is slidably connected in the first shell 21, a wedge block 29 is arranged on one side of the push block 28, a mounting frame 210 is fixedly connected to the wedge block 29, a first guide rod 211 is slidably connected to the mounting frame 210, and the first guide rod 21 1 is sleeved with a first spring 212, and one end of the first spring 212 is arranged on the mounting frame 210, and the other end is arranged in the first housing 21, the mounting frame 210 is fixedly connected with two first positioning blocks 213, a positioning hole 11 is opened at a position corresponding to the first positioning block 213 on the upper die 1 of the bending machine, and the first positioning block 213 is arranged in the positioning hole 11, the first clamping assembly 2 uses the eccentric wheel 23 to push the push block 28, uses the push block 28 to push the wedge block 29, uses the wedge block 29 to drive the mounting frame 210, and uses the mounting frame 21 0 installs the first positioning block 213, uses the first positioning block 213 to squeeze and fix the upper die 1 of the bending machine, the first spring 212 is used to provide a reset elastic force for the mounting frame 210, the first guide rod 211 is used to guide the mounting frame 210, and the positioning hole 11 is used to accommodate the first positioning block 213; a first through hole 22 is opened on the first housing 21 at a position corresponding to the first positioning block 213, and the first positioning block 213 is sleeved in the first through hole 22, and the first through hole 22 is used to accommodate the first positioning block 213; a first through hole 22 is fixedly connected to the eccentric wheel 23 A connecting shaft 24 is provided, and the connecting shaft 24 is rotatably connected to the first housing 21. A handle 25 is installed at one end of the connecting shaft 24. A nut 26 is provided on one side of the handle 25. The nut 26 is threadedly connected to the connecting shaft 24. The eccentric wheel 23 is installed by the connecting shaft 24. The connecting shaft 24 is driven by the handle 25. The handle 25 is pressed and fixed on the connecting shaft 24 by the nut 26. A limiting member 27 is provided at the bottom end of the handle 25. The limiting member 27 is fixedly connected to the first housing 21. The limiting member 27 is used to limit the handle 25.A second clamping assembly 3 is provided on the other side of the upper die 1 of the bending machine, and the second clamping assembly 3 is installed on the first shell 21. The second clamping assembly 3 includes an adjusting screw 31, a slider 32, a second shell 33, a second through hole 34, a second guide rod 35, a connecting plate 36, a second positioning block 37 and a second spring 38. The first shell 21 is rotatably connected with the adjusting screw 31, the adjusting screw 31 is threadedly connected with the slider 32, the slider 32 is fixedly connected with the second shell 33, and the second shell 33 is provided on one side of the upper die 1 of the bending machine, the second guide rod 35 is fixedly connected in the second shell 33, the connecting plate 36 is slidably connected to the second guide rod 35, the second spring 38 is sleeved on the second guide rod 35, and one end of the second spring 38 is provided in the second shell 33, and the other end is provided on the connecting plate 36, and the second spring 38 is fixedly connected at the position corresponding to the positioning hole 11 on the connecting plate 36 The second clamping assembly 3 uses the adjusting screw 31 to drive the slider 32, thereby driving the second housing 33, so that the second housing 33 squeezes and fixes the upper die 1 of the bending machine, the second spring 38 is used to provide a reset elastic force for the connecting plate 36, the second guide rod 35 is used to guide the connecting plate 36, and the connecting plate 36 is used to install the second positioning block 37. The second positioning block 37 is used to squeeze and fix the upper die 1 of the bending machine to prevent the upper die 1 of the bending machine from falling after the first clamping assembly 2 is unlocked; the second housing 33 is provided with a second through hole 34 at the position corresponding to the positioning hole 11, and the second positioning block 37 is sleeved in the second through hole 34, and the second through hole 34 is used to accommodate the second positioning block 37; the first housing 21 is provided with a slide groove 214, and the slider 32 is slidably connected in the slide groove 214, and the slide groove 214 is used to guide the slider 32. ;

[0034] The implementation principle of a quick clamping device for a bending machine in the embodiment of the present application is as follows: when using the utility model, when the upper die 1 of the bending machine is installed for the first time, the first clamping assembly 2 needs to be in a locked state, and then the second clamping assembly 3 is adjusted to clamp the upper die 1 of the bending machine. When the upper die 1 of the bending machine with the same thickness is replaced subsequently, it is only necessary to switch the first clamping assembly 2. When the upper die 1 of the bending machine with a different thickness is replaced, the position of the second clamping assembly 3 needs to be readjusted according to the above method; the specific method of use is: toggle the handle 25 to rotate it from one end of the limit member 27 to the other end, and the handle 25 drives the eccentric wheel 2 through the connecting shaft 24. 3 rotates, the eccentric wheel 23 pushes the push block 28 to slide along the inner wall of the first shell 21, the push block 28 pushes the wedge block 29, and the mounting frame 210 on the wedge block 29 moves accordingly, slides along the first guide rod 211 and compresses the first spring 212, and the first positioning block 213 on the mounting frame 210 extends out of the first through hole 22. At this time, the first clamping assembly 2 is in a locked state, and the upper die 1 of the bending machine is placed between the first shell 21 and the second shell 33, and the adjusting screw 31 is rotated to drive the slider 32 to slide along the slide groove 214, and the second shell 33 on the slider 32 squeezes the upper die 1 of the bending machine, and cooperates with the first positioning block 213 to clamp the upper die 1 of the bending machine The second positioning block 37 is squeezed and the second spring 38 is in a compressed state; when the upper die 1 of the bending machine needs to be removed, the handle 25 is reset, and the eccentric wheel 23 is reset accordingly. Under the elastic action of the first spring 212, the first positioning block 213 is reset. At the same time, under the elastic action of the second spring 38, the connecting plate 36 is reset, and the second positioning block 37 thereon is reset accordingly. The second positioning block 37 squeezes the upper die 1 of the bending machine onto the first shell 21. Therefore, the upper die 1 of the bending machine will not fall off at this time, and it is necessary to manually pull down the upper die 1 of the bending machine for removal. When replacing the upper die 1 of the bending machine with the same thickness, it is only necessary to pull the bending machine The upper mold 1 is inserted between the first shell 21 and the second shell 33, and the second positioning block 37 is automatically inserted into the positioning hole 11. The handle 25 is turned to lock the first clamping assembly 2, so that the first positioning block 213 can be tightly pressed against the upper mold 1 of the bending machine. Therefore, when replacing the upper mold 1 of the bending machine with the same thickness, it is only necessary to turn the handle 25, wherein the nut 26 is used to lock the handle 25 on the connecting shaft 24, the second through hole 34 is used to accommodate the second positioning block 37, and the second guide rod 35 is used to guide the connecting plate 36. The ends of the first positioning block 213 and the second positioning block 37 are truncated cone-shaped, and the openings on both sides of the positioning hole 11 are also truncated cone-shaped.

[0035] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A quick clamping device for a bending machine, comprising an upper die (1) of the bending machine, characterized in that: A first clamping assembly (2) is provided on one side of the upper die (1) of the bending machine, and the first clamping assembly (2) includes a first shell (21), an eccentric wheel (23) is rotatably connected in the first shell (21), a push block (28) is provided on one side of the eccentric wheel (23), and the push block (28) is slidably connected in the first shell (21), a wedge block (29) is provided on one side of the push block (28), a mounting frame (210) is fixedly connected to the wedge block (29), and a mounting frame (210) is slidably connected to the mounting frame (210). A first guide rod (211) is provided, a first spring (212) is sleeved on the first guide rod (211), one end of the first spring (212) is arranged on a mounting frame (210), and the other end is arranged in a first shell (21), two first positioning blocks (213) are fixedly connected to the mounting frame (210), a positioning hole (11) is provided at a position corresponding to the first positioning block (213) on the upper die (1) of the bending machine, and the first positioning block (213) is arranged in the positioning hole (11).

2. A quick clamping device for a bending machine as claimed in claim 1, characterized in that: A first through hole (22) is provided on the first shell (21) at a position corresponding to the first positioning block (213), and the first positioning block (213) is sleeved in the first through hole (22).

3. A quick clamping device for a bending machine as claimed in claim 1, characterized in that: The eccentric wheel (23) is fixedly connected to a connecting shaft (24), and the connecting shaft (24) is rotatably connected to the first housing (21). A handle (25) is installed at one end of the connecting shaft (24), and a nut (26) is provided on one side of the handle (25), and the nut (26) is threadedly connected to the connecting shaft (24).

4. A quick clamping device for a bending machine as claimed in claim 3, characterized in that: A limiting member (27) is disposed at the bottom end of the handle (25), and the limiting member (27) is fixedly connected to the first housing (21).

5. A quick clamping device for a bending machine as claimed in claim 1, characterized in that: A second clamping assembly (3) is provided on the other side of the upper die (1) of the bending machine, and the second clamping assembly (3) is installed on the first shell (21). The second clamping assembly (3) comprises an adjusting screw (31), a slider (32), a second shell (33), a second through hole (34), a second guide rod (35), a connecting plate (36), a second positioning block (37) and a second spring (38). The first shell (21) is rotatably connected with the adjusting screw (31), the adjusting screw (31) is threadedly connected with the slider (32), and the slider (32) is fixedly connected with the second shell (3 3), and the second shell (33) is arranged on one side of the upper mold (1) of the bending machine, a second guide rod (35) is fixedly connected in the second shell (33), a connecting plate (36) is slidably connected to the second guide rod (35), a second spring (38) is sleeved on the second guide rod (35), and one end of the second spring (38) is arranged in the second shell (33), and the other end is arranged on the connecting plate (36), a second positioning block (37) is fixedly connected at a position corresponding to the positioning hole (11) on the connecting plate (36), and the second positioning block (37) is arranged in the positioning hole (11).

6. A quick clamping device for a bending machine as claimed in claim 5, characterized in that: A second through hole (34) is provided on the second shell (33) at a position corresponding to the positioning hole (11), and a second positioning block (37) is sleeved in the second through hole (34).

7. A quick clamping device for a bending machine as claimed in claim 5, characterized in that: The first shell (21) is provided with a sliding groove (214), and the sliding block (32) is slidably connected in the sliding groove (214).

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