Numerical control bending machine die quick change clamp

Abstract

This utility model relates to the field of fixture replacement technology, and in particular to a quick-change fixture for CNC bending machine molds. It includes multiple quick-clamping units spaced apart on the bending machine's worktable, each quick-clamping unit having an operating handle connected to it. Each quick-clamping unit includes a base and a clamping assembly. The operating handle is rotatably connected to the base. Rotating the operating handle drives the clamping assembly closer to or away from the mold, achieving mold clamping and loosening. It also includes a linkage assembly and a locking mechanism. The linkage assembly is hinged to the operating handle of the quick-clamping unit, and through the linkage assembly, all operating handles can be synchronously rotated around its rotation axis. This utility model, through the linkage assembly, can drive multiple operating handles to move simultaneously, achieving rapid clamping of the bending machine mold, eliminating the need for manual operation of each operating handle individually, shortening mold change operation time, and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fixture replacement technology, and in particular to a quick-change fixture for CNC bending machine molds. Background Technology

[0002] The quick-change fixture for CNC bending machine dies is an auxiliary device used on CNC bending machines for quick replacement of bending dies. Its core function is to shorten die changeover time and improve production efficiency. It is especially suitable for bending processing scenarios with multiple varieties and small batches. When the bending machine is working, the die will be subjected to a huge reaction force from the sheet metal. This force is not concentrated at a certain point, but is distributed along the length of the die. Therefore, the quick clamp will be evenly distributed along the length of the die, transmitting the distributed force to the bending machine slider or worktable, ensuring that the die fits tightly with the equipment as a whole, and avoiding situations such as die loosening due to uneven local force.

[0003] However, currently, when locking and loosening multiple quick clamps, it is usually necessary to move the levers on the quick clamps one by one. For heavy molds or long worktables, operators need to move repeatedly along the length of the bending machine to operate multiple levers, which increases physical exertion and is quite troublesome. Based on the above situation, it is necessary to design a quick-change fixture for CNC bending machine molds to solve the above problems. Utility Model Content

[0004] This utility model provides a quick-change fixture for CNC bending machine molds to solve the problems existing in the prior art.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] A quick-change fixture for a CNC bending machine mold includes multiple quick-clamping units spaced apart on the bending machine's worktable. Each quick-clamping unit is equipped with an operating handle. Each quick-clamping unit includes a base and a clamping assembly. The operating handle is rotatably connected to the base. Rotating the operating handle drives the clamping assembly closer to or further from the mold, thus clamping and releasing the mold. The fixture also includes a linkage assembly and a locking mechanism. The linkage assembly is hinged to the operating handle of the quick-clamping unit, and the linkage assembly synchronously drives all operating handles to rotate around its rotation axis. The locking mechanism is used to lock the position of the linkage assembly.

[0007] Preferably, the linkage assembly includes a linkage rod and a plurality of hinge seats located at the lower end of the linkage rod and corresponding one-to-one with the quick clamp unit, and one end of the operating handle is detachably connected to the hinge seat.

[0008] Preferably, the base has a positioning cavity, and a positioning seat is threadedly connected inside the positioning cavity. The positioning seat is movably sleeved on the rotating shaft of the operating handle, and a movable plate is rotatably connected to the outer wall of the rotating shaft of the operating handle.

[0009] Preferably, the locking mechanism includes a locking pin threaded to the linkage rod and a locking hole opened on the bending machine workbench, and the linkage rod is locked by inserting the locking pin into the locking hole.

[0010] Preferably, the linkage rod has hand handles at both ends, and the hand handles have anti-slip textures.

[0011] Preferably, the clamping assembly includes a clamping block slidably connected to the base, a wedge-shaped pressure seat disposed on the clamping block, and a wedge-shaped extrusion seat disposed at the end of the rotating shaft of the operating handle, wherein a spring is connected between the clamping block and the base.

[0012] The beneficial effects of this utility model are: the linkage component can drive multiple operating handles to move simultaneously, thereby achieving rapid clamping of the bending machine mold, eliminating the need for manual operation of each operating handle individually, shortening the mold changing operation time, and improving production efficiency. At the same time, the detachable separation of the operating handle and the linkage component allows for flexible selection of the quick clamping unit to be linked according to the mold length, avoiding interference or damage caused by the ineffective movement of redundant quick clamping units. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the prior art structure provided for this utility model;

[0015] Figure 2 This is a schematic diagram of the equiaxed side structure provided by this utility model;

[0016] Figure 3 A partial cross-sectional schematic diagram of the clamping assembly provided by this utility model;

[0017] Figure 4 This is a schematic diagram of the clamping block in this utility model;

[0018] Figure 5 This is a schematic diagram of the operating handle in this utility model.

[0019] In the diagram, 1 is the bending machine workbench; 2 is the quick-clamp unit; 21 is the base; 22 is the clamping assembly; 221 is the clamping block; 222 is the wedge-shaped pressure seat; 223 is the wedge-shaped extrusion seat; 224 is the spring; 3 is the linkage rod; 31 is the hinge seat; 32 is the hand handle; 4 is the positioning cavity; 41 is the positioning seat; 42 is the movable plate; 5 is the locking post; 51 is the locking hole; and 6 is the operating handle. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] A quick-change fixture for a CNC bending machine mold includes multiple quick-clamping units 2 spaced apart on the worktable 1 of the bending machine. Each quick-clamping unit 2 is equipped with an operating handle 6. Each quick-clamping unit 2 includes a base 21 and a clamping assembly 22. The operating handle 6 is rotatably connected to the base 21. Rotating the operating handle 6 drives the clamping assembly 22 to move closer to or away from the mold, thus clamping and releasing the mold. The clamping assembly 22 includes a clamping block 221 slidably connected to the base 21, a wedge-shaped pressure seat 222 disposed on the clamping block 221, and a clamping component 222 disposed on the base 21. The wedge-shaped extrusion seat 223 at the end of the rotating shaft of the operating handle 6 is connected to the clamping block 221 and the base 21 by a spring 224. When clamping the mold of the bending machine, the mold is usually placed between the clamping block 221 and the worktable 1 of the bending machine first. Then, the operating handle 6 is rotated to drive the wedge-shaped extrusion seat 223 to rotate. The thickness of the wedge-shaped extrusion seat 223 gradually increases in the direction of rotation, which extrudes the wedge-shaped pressure seat 222 on the clamping block 221 and drives the clamping seat to move towards the mold, thereby realizing quick clamping of the mold. However, in the prior art, such as Figure 1 As shown, multiple quick-clamp units 2 are provided. Especially for some longer molds, it is cumbersome to manually operate each handle 6. Therefore, we have made the following improvements:

[0022] Reference Figures 2-4As shown, it also includes a linkage component and a locking mechanism. The linkage component is hinged to the operating handle 6 of the quick clamp unit 2, and can synchronously drive all operating handles 6 to rotate around its rotation axis. The locking mechanism is used to lock the position of the linkage component. The linkage component includes a linkage rod 3 and multiple hinge seats 31 located at the lower end of the linkage rod 3 and corresponding one-to-one with the quick clamp unit 2. One end of the operating handle 6 is detachably connected to the hinge seat 31. When clamping the mold, the operating handle 6 is moved to one side by pushing the linkage rod 3, which drives all operating handles 6 and the wedge-shaped extrusion seats 223 at their ends to extrude the clamping block 221 to clamp the mold. After pushing the linkage rod 3, the locking mechanism locks the position of the linkage rod 3 to limit the swing handle and prevent the clamping block 221 from loosening.

[0023] The locking mechanism includes a locking pin 5 threaded onto the linkage rod 3 and a locking hole 51 opened on the bending machine worktable 1. The linkage rod 3 is locked by inserting the locking pin 5 into the locking hole 51. After the operating handle 6 is swung to the position of the extrusion mold by the linkage rod 3, the locking pin 5 is opposite to the locking hole 51. The linkage rod 3 can be fixed by rotating the locking pin 5 to extend into the locking hole 51.

[0024] Reference Figure 2 As shown, furthermore, hand-held levers 32 are provided at both ends of the linkage rod 3, and anti-slip textures are provided on the hand-held levers 32. When it is necessary to operate the long linkage rod 3, the force may be uneven when operating alone. The hand-held levers 32 at both ends allow two operators to hold both ends respectively and push or pull the linkage rod 3 by working together. Especially when dealing with large and heavy molds, it can effectively distribute the operating force and avoid the linkage rod 3 tilting due to unilateral force. It ensures that all quick clamping units 2 are subjected to uniform force and complete the clamping or releasing action synchronously. At the same time, the anti-slip textures of the hand-held levers 32 can increase the friction between the hand and the linkage rod 3. Even if the operator's hands are contaminated with oil or sweat, they can hold it stably and prevent slippage during pushing or pulling.

[0025] When clamping shorter molds, to reduce ineffective movements of other quick-clamping units 2, the linkage rod 3 can be disengaged from the operating handle 6 on the other quick-clamping units 2 that are not used by the molds. A positioning cavity 4 is provided on the base 21, and a positioning seat 41 is threadedly connected inside the positioning cavity 4. The positioning seat 41 is movably sleeved on the rotating shaft of the operating handle 6, and a movable plate 42 is rotatably connected to the outer wall of the rotating shaft of the operating handle 6. When disengaging the operating handle 6 from the linkage rod 3, the positioning seat 41 can first be rotated so that it contacts the movable plate 42. At this time, Pulling out the operating handle 6 along its rotation axis causes the wedge-shaped pressing seat 223 to move away from the wedge-shaped pressure seat 222. At this time, the hinge shaft at one end of the operating handle 6 can be moved out from the hinge seat 31, so it will not move synchronously with the movement of the linkage rod 3. Similarly, during assembly, rotating the positioning seat 41 to abut against the movable plate 42 allows the wedge-shaped pressing seat 223 at the end of the operating handle 6 to abut against the wedge-shaped pressure seat 222. Since the movable plate 42 is rotatably connected to the operating handle 6, even if the positioning seat 41 abuts against the movable plate 42, it will not affect the rotation of the operating handle 6.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-change fixture for a CNC bending machine mold, comprising a plurality of quick-clamping units (2) spaced apart on a bending machine worktable (1), wherein each quick-clamping unit (2) is provided with an operating handle (6) connected thereto, characterized in that, The quick-clamp unit (2) includes a base (21) and a clamping assembly (22). The operating handle (6) is rotatably connected to the base (21). By rotating the operating handle (6), the clamping assembly (22) is driven to move closer to or away from the mold, thereby clamping and releasing the mold. The unit also includes a linkage assembly and a locking mechanism. The linkage assembly is hinged to the operating handle (6) of the quick-clamp unit (2), and the linkage assembly can synchronously drive all operating handles (6) to rotate around its rotation axis. The locking mechanism is used to lock the position of the linkage assembly.

2. The quick-change clamp for a die of a numerical control press brake according to claim 1, wherein The linkage assembly includes a linkage rod (3) and a plurality of hinge seats (31) located at the lower end of the linkage rod (3) and corresponding one-to-one with the quick clamp unit (2). One end of the operating handle (6) is detachably connected to the hinge seat (31).

3. The quick-change clamp for a die of a numerical control press brake according to claim 1, wherein The base (21) has a positioning cavity (4), and a positioning seat (41) is threaded inside the positioning cavity (4). The positioning seat (41) is movably sleeved on the rotating shaft of the operating handle (6), and a movable plate (42) is rotatably connected to the outer wall of the rotating shaft of the operating handle (6).

4. The quick-change clamp of the numerically controlled bending machine die according to claim 2, characterized in that, The locking mechanism includes a locking pin (5) threaded onto the linkage rod (3) and a locking hole (51) opened on the bending machine workbench (1). The linkage rod (3) is locked by inserting the locking pin (5) into the locking hole (51).

5. The quick-change clamp of the numerically controlled bending machine die according to claim 2, characterized in that, The linkage rod (3) has hand handles (32) at both ends, and the hand handles (32) have anti-slip textures.

6. The quick-change die clamp of claim 1, wherein, The clamping assembly (22) includes a clamping block (221) slidably connected to the base (21), a wedge-shaped pressure seat (222) disposed on the clamping block (221), and a wedge-shaped extrusion seat (223) disposed at the end of the rotating shaft of the operating handle (6). A spring (224) is connected between the clamping block (221) and the base (21).

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