A quick clamping device for mold on bending machine

Abstract

The utility model discloses a quick clamping device for upper molds of a bending machine, comprising an upper mold base, a hook clamp, a side clamp plate, and a driving member; the side clamp plate and the driving member are all installed on the upper mold base; the hook clamp is arranged between the side clamp plate and the upper mold base, and the side clamp plate constrains the running track of the hook clamp and the two do not separate; when the driving member drives the side clamp plate to move in a direction close to the upper mold base, the side clamp plate drives the hook clamp member to move upward, and the hook clamp member drives the upper mold cutting tool to move upward until the upper mold cutting tool is fixed to the upper mold base; when the driving member drives the side clamp plate to move in a direction away from the upper mold base, the hook clamp member and the upper mold cutting tool descend to the lowest point under the action of their own gravity. The upper mold can be quickly assembled and disassembled, and has many advantages such as small size, low cost, strong practicality, convenient operation, and uniform clamping force.

Description

Technical Field

[0001] The utility model relates to a bending die clamping technology, in particular to a fast die clamping device for a bending machine. Background Art

[0002] In the workpiece bending process, a bending upper die and a bending lower die are usually required. The bending upper die has an upper die clamping part and an upper die cutter head. The bending lower die is V-shaped. The workpiece is placed between the bending upper die and the bending lower die. The upper die clamping part is clamped on the bending machine. The upper die cutter head applies force to the surface of the workpiece to bend the workpiece.

[0003] According to the different relative positions of the upper die head and the center line of the upper die clamping part, the bending upper die can be classified into two types: symmetrical head type and asymmetrical head type. The clamping of the asymmetrical head bending upper die (commonly known as European or Armada type) is manual or pneumatic split quick clamps. There are several to dozens of them installed on each bending machine (taking a bending machine with a 3-meter workbench as an example, each time the mold is changed, the operator needs to repeat the loosening and locking actions dozens or hundreds of times. Even a simple left and right movement of the bending lower die is time-consuming and laborious). There is usually a gap of dozens of millimeters between each two split quick clamps, and there is no way to install small segmented molds in these gaps, which is not conducive to the implementation and application of automatic mold changing technology. Summary of the invention

[0004] The technical problems to be solved by the utility model are:

[0005] The existing structure is very complicated, the installation is time-consuming and labor-intensive, and the manufacturing cost is high.

[0006] In order to solve the above technical problems, the inventors have obtained the technical solution of the utility model through practice and summary. The utility model adopts the following technical solution:

[0007] A quick clamping device for an upper die of a bending machine comprises an upper die base, a hook clamp, a side clamp plate and a driving member;

[0008] The side clamping plates and driving parts are installed on the upper die base;

[0009] The hook clamp is arranged between the side clamp and the upper die seat, and the side clamp constrains the running track of the hook clamp and the two do not separate;

[0010] When the driving member drives the side clamp to move toward the upper die seat, the side clamp drives the hook clamp upward, and the hook clamp drives the upper die cutting tool upward until the upper die cutting tool is fixed to the upper die seat;

[0011] When the driving member drives the side clamping plate to move in a direction away from the upper die seat, the hook clamping member and the upper die cutting tool descend to the lowest point under the action of their own gravity and the upper die cutting tool does not fall.

[0012] Preferably: a bottom portion of the side clamping plate close to the upper die seat is provided with an oblique upward guiding structure, and the guiding structure is used for guiding the hook clamping member in the vertical direction and the horizontal direction;

[0013] The guide structure is a groove with an angle of 10-89° with the horizontal plane, and the groove is opened along the length direction of the upper mold base.

[0014] Preferably:

[0015] The hook clamp member comprises a movable body and a hook clamp body;

[0016] The movable body is slidably installed in the guide structure and will not fall, and the sliding direction of the movable body is the depth direction of the guide structure;

[0017] The hook clamp body is integrally connected to one side of the movable body opposite to the upper die seat, and the hook clamp body is used to hook the upper die cutting tool to prevent it from falling in a natural state;

[0018] A wedge-shaped surface inclined upward is arranged on one side of the bottom of the hook clamp body close to the upper die seat.

[0019] Preferably: the side clamping plate is provided with a stepped hole obliquely downward on the side facing away from the upper die seat, the cross section of the stepped hole is a structure of being larger at the top and smaller at the bottom, the root of the stepped hole is connected to the guide structure, and a limiting member is installed in the stepped hole;

[0020] The stepped hole is a hole with an angle of 10-89° with the horizontal plane, and the hole is opened along the thickness direction of the side clamping plate.

[0021] Preferably:

[0022] The limiting member comprises a limiting pin, which is movably installed in the stepped hole, passes through the stepped hole and is threadedly connected to the movable body.

[0023] Preferably: a downwardly extending boss 1 is provided on the lower surface of the top of the movable body, a upwardly extending boss 2 is provided on the lower surface of the inner wall of the guide structure, the limiting body is located above the boss 2 and in corresponding positions, and the two are used together to set the lowest point position of the downward movement of the clamping plate on the opposite side of the hook clamp.

[0024] Preferably:

[0025] A pressure-bearing body is integrally connected to one side of the top of the hook clamp body close to the upper die seat, the pressure-bearing body is located on the top of the upper die cutting tool, and the pressure-bearing body and the hook clamp area of ​​the hook clamp body are surrounded to form a socket area, and the socket area is used to horizontally insert the top of the upper die cutting tool;

[0026] The hook clamping area of ​​the hook clamping body is used to press the front side of the upper die cutting tool and the top of the hook clamping area of ​​the upper die cutting tool.

[0027] Preferably: a hooking groove is provided on the front side of the upper die cutting tool, and an upper die mounting groove is provided on the bottom side of the upper die seat close to the side clamping plate, the upper die mounting groove is used to press the top and rear sides of the upper die cutting tool, and the hook clamp is used to press the front side of the upper die cutting tool and the top side of the hooking groove.

[0028] Preferably, a plurality of continuous step structures are provided between the lower surface of the hook clamp body and the lower surface of the guide structure.

[0029] Preferably:

[0030] The side clamping plates and the driving member are respectively located on two sides of the upper die seat.

[0031] The side clamping plate is installed on the front side of the upper die base, and the driving member is installed on the rear side of the upper die base. The driving member is an oil cylinder, an air cylinder or a servo electric cylinder. The movable end of the driving member passes through the upper die base and drives the side clamping plate away from or close to the upper die base. A guide rod is provided on the upper die base. The guide rod is installed on the upper die base through a thread. The guide rod is used for the forward and backward movement of the side clamping plate.

[0032] Compared with the prior art, the utility model has the following beneficial effects:

[0033] 1. The utility model adopts a driving member, a side clamp, and a hook clamp to install the upper die cutting tool on the upper die seat. When installing, the driving member drives the side clamp close to the upper die seat, and then drives the hook clamp to prevent the upper die cutting tool from falling off due to its own gravity to move upward and fix it on the upper die seat, and the driving member moves the side clamp away from the upper die seat; when disassembling, the driving member drives the side clamp away from the upper die seat, and the hook clamp and the upper die cutting tool fall to the lowest point under the action of their own gravity. At this time, the upper die cutting tool will not separate from the hook clamp, and then the upper die cutting tool can be easily removed. The entire solution only needs to control the movement direction of the side clamp driven by the driving member to complete the quick clamping operation, and the clamping force is uniform. It originally took 30-50 seconds to loosen and tighten the screws to complete the upper die replacement operation, but the present application solution can complete the replacement operation within 2-3 seconds, greatly improving efficiency.

[0034] The existing technology needs to be attached to the installation reference surface before clamping the upper mold in order to ensure that the upper mold body will not be vertically displaced during the bending process. One way is to ensure that the upper mold is attached to the installation reference surface when the movable insert is clamped to the mold, which requires the movable insert to have a higher precision requirement; another way is to operate the handle to clamp the upper mold while ensuring that the upper mold is attached to the installation reference surface. The operation is complicated and cannot be quickly clamped for larger or heavier upper mold installation operations. At the same time, this technology can achieve vertical installation but cannot achieve vertical disassembly (actually horizontal disassembly).

[0035] 2. The utility model uses side clamps to constrain the movement trajectory of the hook clamp, so that the hook clamp can complete simultaneous movement in the vertical and horizontal directions, that is, it can be automatically fixed upward on the upper die base during clamping, and when disassembling, the upper die cutting tool and the hook clamp can automatically separate horizontally when moving upward.

[0036] 3. The utility model uses a limiting pin to move the hook clamp along the depth direction of the guide structure, thereby limiting the movement of the hook clamp along the length direction of the guide structure.

[0037] 4. The utility model provides a plurality of continuously arranged step structures on the bottom surface of the hook clamp, which can ensure the structural strength and reduce the thickness and volume of the side clamp while ensuring the stroke.

[0038] 5. The utility model is provided with bosses in the guide structure and on the top of the hook clamp, and the boss structure is utilized to realize setting the position of the lowest point and ensure the mounting strength.

[0039] 6. The utility model also uses a driving member and a pressure plate located on both sides of the upper mold base, optimizing the front and rear structural layout on the upper mold base, which can better utilize the space and make the entire clamp system more compact. At the same time, it provides a larger operating space to facilitate the installation, adjustment and replacement of the mold. This layout makes operation and maintenance more convenient and improves work efficiency. The driving member can be used as a universal part or standard part of the same type of clamping structure. In this way, when replacing the same type of clamping structure with different specifications, there is no need to replace the driving member on the rear side, reducing the workload. It can also share the clamping force more evenly to ensure that the upper mold is balanced during the clamping process. This balanced distribution reduces the deformation or displacement of the mold due to uneven force, thereby improving the stability and accuracy of the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The overall structure of the utility model after clamping is shown in FIG. Figure 1 ;

[0041] Figure 2 This is a schematic diagram of the side splint structure of the utility model;

[0042] Figure 3 The structure of the hook clamp of the utility model is shown in FIG. Figure 1 ;

[0043] Figure 4 It is a structural schematic diagram of the upper die cutting tool of the utility model;

[0044] Figure 5 The overall structure of the utility model when disassembled is shown in FIG. Figure 1 ;

[0045] Figure 6 The overall structure of the utility model after clamping is shown in FIG. Figure 2 ;

[0046] Figure 7 The structure of the hook clamp of the utility model is shown in FIG. Figure 2 ;

[0047] Figure 8 The overall structure of the utility model when disassembled is shown in FIG. Figure 2 ;

[0048] Fig. 9 The overall structure of the utility model when disassembled is shown in FIG. Figure 3 ;

[0049] Fig.10 It is a structural schematic diagram of the upper die base of the utility model.

[0050] In the figure: 1. upper die seat; 11. upper die mounting groove; 2. side clamp; 21. stepped hole; 211. limit pin; 22. guide structure; 23. boss 2; 3. hook clamp; 31. movable body; 32. hook clamp body; 33. boss 1; 34. wedge surface; 35. pressure-bearing body; 4. driving member; 5. upper die cutting tool; 51. hook hanging groove. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0052] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0053] Example 1

[0054] like Figures 1 to 5 As shown, a quick clamping device for upper mold of a bending machine includes an upper mold base 1, a hook clamp 3, a side clamp plate 2, and a driving member 4;

[0055] The side clamping plate 2 and the driving member 4 are both installed on the upper die base 1;

[0056] The hook clamp 3 is arranged between the side clamp 2 and the upper die base 1, and the side clamp 2 constrains the running track of the hook clamp 3 and the two do not separate;

[0057] When the driving member 4 drives the side clamping plate 2 to move toward the upper die seat 1, the side clamping plate 2 drives the hook clamping member 3 upward, and the hook clamping member 3 drives the upper die cutting tool 5 upward until the upper die cutting tool 5 is fixed to the upper die seat 1, and the upper die body 3 is in a compressed state;

[0058] When the driving member 4 drives the side clamp 2 to move away from the upper die seat 1, the hook clamp 3 and the upper die cutting tool 5 move downward to the lowest point under their own gravity without the upper die body 3 falling. The upper die cutting tool 5 is at the lowest point and can selectively detach from the hook clamp 3.

[0059] On the basis of the above solution, the driving member 4 can be an oil cylinder, an air cylinder, or a servo electric cylinder, or a traditional screw or an operating handle, which is a traditional structure not shown in the figure.

[0060] The side clamp 2 is installed on the front side of the upper die base 1, and the driving member 4 is installed on the rear side of the upper die base 1. The movable end of the driving member 4 penetrates the upper die base 1 and drives the side clamp 2 to move away from or close to the upper die base 1. The driving member 4 drives the side clamp 2 to move away from or close to the upper die base 1 to realize that the hook clamp 3 fixes the upper die cutting tool 5 on the upper die base 1. When moving away from the upper die base 1, the hook clamp 3 will fall to the lowest point together with the upper die cutting tool 5. When disassembling, the upper die cutting tool 5 moves upward in the opposite direction. The hook clamp 3 can move upward together with the upper die cutting tool 5 or not. When moving upward together, the hook clamp 3 will gradually separate from the upper die cutting tool 5 laterally when moving upward. When all are separated, the top of the upper die cutting tool 5 will be slightly tilted to further push the hook clamp 3 away from the upper die cutting tool 5, and then the upper die cutting tool 5 will be pulled down to complete the separation. Of course, when the upper die cutting tool 5 moves upward, the hook clamp 3 does not move, and the top of the upper die cutting tool 5 is slightly tilted to push the hook member 3 to completely detach from the upper die cutting tool 5, and then pull it down to complete the separation. In summary, after falling to the lowest point, the upper die cutting tool 5 can be disassembled in a variety of ways, not limited to the above process, so how to separate the upper die cutting tool 5 and the hook clamp 3 at the lowest point of the fall in this solution is not the focus of this solution.

[0061] The side clamping plate 2 is arranged on the front side and the driving member 4 is arranged on the rear side, so as to reduce the volume of the front side structure and facilitate operation. At the same time, when replacing the clamping structure, the driving member 4 can be left at the rear side without being disassembled, which does not hinder the installation of the traditional front side clamping structure. When replacing such a clamping structure, the installation steps can be reduced. At the same time, the driving member 4 can be used as a universal part or standard part of the same type of clamping structure to expand practicality.

[0062] A guide rod may also be threadedly mounted on the upper die base 1 , and the guide rod is used for the side clamping plate 2 to move forward and backward, preferably horizontally.

[0063] Embodiment 2, based on the above embodiment, makes the following improvements:

[0064] like Figures 1 to 5 The bottom of the side clamp plate 2 close to the upper die seat 1 is provided with an oblique upward guide structure 22, and the guide structure 22 is used to guide the hook clamp 3 in the up-down direction and the horizontal direction;

[0065] The guide structure 22 is a groove with an angle of 10-89° to the horizontal plane, preferably 45°, and the groove is opened along the length direction of the upper mold base 1.

[0066] As shown in the figure, the guide structure 22 is used to constrain the hook clamp 3 to an oblique trajectory, and the preferred angle is 45°. The vertical stroke and the lateral stroke are equal, which is convenient for controlling the upward distance when separating the upper mold cutting tool 5 and the hook clamp 3.

[0067] Embodiment 3, based on the above embodiment, the following improvements are made:

[0068] like Figures 1 to 5 As shown, the hook clamp member 3 includes a movable body 31 and a hook clamp body 32;

[0069] The movable body 31 is slidably installed in the guide structure 22 and will not fall off. The sliding direction of the movable body 31 is the depth direction of the guide structure 22.

[0070] The hook clamp body 32 is integrally connected to a side of the movable body 31 opposite to the upper die base 1 , and the hook clamp body 32 is used to hook the upper die cutting tool 5 to prevent it from falling in a natural state.

[0071] By slidingly cooperating with the movable body 31 and the guide structure 22 , the movable body 31 slides along the depth direction of the guide structure 22 , thereby realizing that the clamping member 3 can also move vertically when the clamping plate 2 on the opposite side moves horizontally.

[0072] In this solution, a wedge-shaped surface 34 inclined upward can be provided at the bottom of the hook clamp body 32 near the upper die seat 1, which is conducive to the upper die cutting tool 5 entering the hook clamp area of ​​the hook clamp body 32 and facilitating the automatic anti-detachment of the two.

[0073] Embodiment 4, based on the above embodiment, the following improvements are made:

[0074] like Figures 1 to 5 As shown, the side clamping plate 2 is provided with a stepped hole 21 obliquely downward on the side facing away from the upper die base 1. The cross section of the stepped hole 21 is a structure of being larger at the top and smaller at the bottom. The root of the stepped hole 21 is connected to the guide structure 22. A limiting member is installed in the stepped hole 21.

[0075] The stepped hole 21 is a hole with an angle of 10-89° with the horizontal plane, and the hole is opened along the thickness direction of the side clamping plate 2 .

[0076] The movable body 31 can only move along the depth direction in the side clamping plate 2 through the limiting member, and is restricted from moving in the length direction.

[0077] The limiting member includes a limiting pin 211 with a large head structure. The large head structure of the limiting pin 211 is movably installed in the stepped hole 21 . The limiting pin 211 passes through the stepped hole 21 and is threadedly connected to the movable body 31 .

[0078] Embodiment 5, based on the above embodiment, the following improvements are made:

[0079] like Figures 1 to 5 As shown, a boss 1 33 extending downward is provided on the lower surface of the top of the movable body 31, a boss 2 23 extending upward is provided on the lower surface of the inner wall of the guide structure 22, and a position limiting body is located above the boss 23 and in a corresponding position, and the two are used together to set the lowest point position of the clamping plate 2 on the opposite side of the hook clamp 3. The boss structure is used to set the position of the lowest point and ensure the mounting strength.

[0080] Embodiment 6, based on the above embodiment, the following improvements are made:

[0081] like Figures 6 to 9 As shown, the top of the hook clamp body 32 is integrally connected to a pressure-bearing body 35 on one side close to the upper die seat 1. The pressure-bearing body 35 is located on the top of the upper die cutting tool 5. The pressure-bearing body 35 and the hook clamp area of ​​the hook clamp body 32 are surrounded to form a socket area, and the socket area is used to horizontally insert the top of the upper die cutting tool 5.

[0082] The hook clamping area of ​​the hook clamping body 32 is used to press the front side of the upper die cutting tool 5 and the top of the hook clamping area of ​​the upper die cutting tool 5 .

[0083] After the upper die blade 5 and the hook clamp 3 fall to the lowest point, the upper die blade 5 moves vertically upward, and the pressure bearing body 35 moves horizontally relative to the upper die blade 5, so that the hook clamp area and the upper die blade 5 are separated, and then pulled down to complete the straight up and down action. Of course, after separation, the top of the upper die blade 5 can be deflected forward and then pulled down to complete the disassembly operation. The upper die blade and the hook clamp can also be moved obliquely upward to a certain height, and the upper die blade is moved close to the upper die seat until the hook clamp area is separated from the notch, and then the upper die blade is quickly pulled down to complete the separation operation.

[0084] Embodiment 7, based on the above embodiment, the following improvements are made:

[0085] A hooking groove 51 is provided on the front side of the upper die cutting tool 5, and an upper die mounting groove 11 is provided on the bottom side of the upper die base 1 close to the side clamping plate 2. The upper die mounting groove 11 is used to press the top and rear sides of the upper die cutting tool 5, and the hook clamping area of ​​the hook clamp body 32 of the hook clamp 3 is used to press the front side of the upper die cutting tool 5 and the top side of the hooking groove 51.

[0086] Embodiment 8, based on the above embodiment, the following improvements are made:

[0087] A plurality of continuous step structures are provided between the lower surface of the hook clamp body 32 and the lower surface of the guide structure 22, so as to ensure the structural strength, reduce the volume and thickness of the side clamping plate while ensuring the stroke, realize the lightweight structure and reduce the cost.

[0088] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. After the hook clamp is fixed to the upper mold body, the top rear side wall and the top rear upper surface of the upper mold body are pressed on the upper mold base. Equivalent replacement or change according to the technical solution of the utility model and its inventive concept should be included in the protection scope of the utility model.

Claims

1. A quick clamping device for upper mold of a bending machine, comprising an upper mold base (1), characterized in that: It also includes a hook clamp (3), a side clamp (2), and a driving member (4); The side clamping plate (2) and the driving member (4) are both mounted on the upper die base (1); The hook clamp (3) is arranged between the side clamp (2) and the upper die seat (1), and the side clamp (2) constrains the running track of the hook clamp (3) and the two do not separate; When the driving member (4) drives the side clamping plate (2) to move in a direction close to the upper die seat (1), the side clamping plate (2) drives the hook clamping member (3) to move upward, and the hook clamping member (3) drives the upper die cutting tool (5) to move upward until the upper die cutting tool (5) is fixed to the upper die seat (1); When the driving member (4) drives the side clamping plate (2) to move in a direction away from the upper die seat (1), the hook clamping member (3) and the upper die cutting tool (5) move downward to the lowest point under the action of their own gravity and the upper die cutting tool does not fall.

2. According to claim 1, a quick clamping device for molds on a bending machine is characterized in that: A guide structure (22) is provided at the bottom of the side clamping plate (2) close to the upper die seat (1), and the guide structure (22) is used to guide the hook clamp (3) in the up-down direction and in the horizontal direction. The guide structure (22) is a groove with an angle of 10-89° with the horizontal plane, and the groove is opened along the length direction of the upper mold base (1).

3. The quick clamping device for mold on a bending machine according to claim 2, characterized in that: The hook clamp member (3) comprises a movable body (31) and a hook clamp body (32); The movable body (31) is slidably installed in the guide structure (22) and will not fall off, and the sliding direction of the movable body (31) is the depth direction of the guide structure (22); The hook clamp body (32) is integrally connected to a side of the movable body (31) opposite to the upper die seat (1), and the hook clamp body (32) is used to hook the upper die cutting tool (5) to prevent it from falling in a natural state; A wedge-shaped surface (34) obliquely facing upward is provided on one side of the bottom of the hook clamp body (32) close to the upper die seat (1).

4. The quick clamping device for mold on a bending machine according to claim 3, characterized in that: The side clamping plate (2) is provided with a stepped hole (21) obliquely downward on the side facing away from the upper die seat (1); the cross section of the stepped hole (21) is a structure with a larger top and a smaller bottom; the root of the stepped hole (21) is connected to the guide structure (22); and a limiting member is installed in the stepped hole (21); The stepped hole (21) is a hole with an angle of 10-89° with the horizontal plane, and the hole is opened along the thickness direction of the side clamping plate (2).

5. The quick clamping device for mold on a bending machine according to claim 4, characterized in that: The limiting member comprises a limiting pin (211), the limiting pin (211) is movably installed in the stepped hole (21), the limiting pin (211) passes through the stepped hole (21) and is threadedly connected to the movable body (31).

6. A quick clamping device for molds on a bending machine according to claim 3 or 4, characterized in that: The movable body (31) is provided with a downwardly extending boss 1 (33) on the lower surface of the top, and the guide structure (22) is provided with an upwardly extending boss 2 (23) on the lower surface of the inner wall. The limiting body is located above the boss 2 (23) and has corresponding positions. The two are used together to set the lowest point position of the clamping plate (2) on the opposite side of the hook clamp (3) when descending.

7. The quick clamping device for mold on a bending machine according to claim 3, characterized in that: A pressure-bearing body (35) is integrally connected to one side of the top of the hook clamp body (32) close to the upper die seat (1), the pressure-bearing body (35) is located at the top of the upper die cutting tool (5), and the pressure-bearing body (35) and the hook clamping area of ​​the hook clamp body (32) are surrounded to form a socket area, and the socket area is used to horizontally insert the top of the upper die cutting tool (5); The hook clamping area of ​​the hook clamping body (32) is used to press the front side of the upper die cutting tool (5) and the top of the hook clamping area of ​​the upper die cutting tool (5).

8. The quick clamping device for mold on a bending machine according to claim 1, characterized in that: The upper die cutting tool (5) is provided with a hooking groove (51) on the front side, and an upper die installation groove (11) is provided on the bottom side of the upper die base (1) close to the side clamping plate (2). The upper die installation groove (11) is used to press the top side and the rear side of the upper die cutting tool (5), and the hook clamp (3) is used to press the front side of the upper die cutting tool (5) and the top side of the hooking groove (51).

9. The quick clamping device for mold on a bending machine according to claim 3, characterized in that: A plurality of continuous step structures are provided between the lower surface of the hook clamp body (32) and the lower surface of the guide structure (22).

10. The quick clamping device for mold on a bending machine according to claim 8, characterized in that: The driving member (4) is an oil cylinder, an air cylinder or a servo electric cylinder; The side clamping plate (2) is installed on the front side of the upper die base (1), and the driving member (4) is installed on the rear side of the upper die base (1). The movable end of the driving member (4) penetrates the upper die base (1) and drives the side clamping plate (2) to move away from or close to the upper die base (1). A guide rod is provided on the upper die base (1), and the guide rod is installed on the upper die base (1) through a thread. The guide rod is used for the side clamping plate (2) to move forward and backward.

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