Numerical control metal plate bending machine

Abstract

The utility model relates to the technical field of metal bending, and discloses a numerical control metal plate bending machine which comprises a bending machine body, a stamping upper die is installed on the bending machine body and comprises an upper die base arranged on the bending machine body, the upper die base can move along the Z axis, supporting frames are arranged on the two sides of the upper die base correspondingly, and the upper die base can move along the Z axis. The supporting frame comprises a connecting rod hinged to the upper die base, the lower end of the connecting rod is hinged to a limiting device, and the limiting device comprises a pressing plate hinged to the connecting rod. Through cooperative use of the stamping upper die, the limiting device, the supporting frame, the first torsion spring and the second torsion spring, the upper die base drives the stamping die head and the pressing plate to move downwards, the pressing plate fixes a metal plate, when the metal plate tilts, the hinged connecting rod and the connecting rod avoid and limit, deviation is prevented, the connecting rod further plays a role in supporting and balancing, stress concentration of the connecting rod and the hinged position is reduced, and the service life of the metal plate is prolonged. And the structure stability is improved, deformation and damage are reduced, and the effects of high safety, good stability and convenient operation are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal bending, in particular to a numerical control metal plate bending machine. BACKGROUND

[0002] In the working process of the numerical control bending machine, the traditional bending principle usually controls the forming angle by pressing the plate in the die opening or pressing the plate into the same angle as the die. In the traditional operation, the operator needs to hold the plate and put it into the working area of the bending machine. During the bending process, the two ends of the plate may be raised, and the operator needs to hold the plate all the time. This operation mode not only has safety hazards, but also limits the stability of the operator's operation, which easily leads to unstable bending quality. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problem that the plate is easy to be raised and needs to be fixed continuously in the operation of the traditional bending machine, the application provides a numerical control metal plate bending machine.

[0004] The numerical control metal plate bending machine provided by the application adopts the following technical scheme:

[0005] The numerical control metal plate bending machine comprises a bending machine, a stamping upper die is installed on the bending machine, the stamping upper die comprises an upper die seat arranged on the bending machine, the upper die seat is movable along the Z axis, support frames are arranged on both sides of the upper die seat, the support frames comprise connecting rods hingedly connected to the upper die seat, limit devices are hingedly connected to the lower ends of the connecting rods, and the limit devices are used for pressing and fixing the metal plate.

[0006] Preferably, the limit device comprises a pressing plate hingedly connected to the connecting rod, a torsion spring one is arranged at the hinge connection position of the pressing plate and the connecting rod, and an anti-skid structure is arranged on the bottom of the pressing plate.

[0007] Preferably, a connecting rod is hingedly connected to the connecting rod, the upper end of the connecting rod is hingedly connected to the upper die seat, and a torsion spring two is arranged at the hinge connection position of the connecting rod and the upper die seat.

[0008] Preferably, a plurality of die heads are arranged on the upper die seat, the die heads are located on the inner sides of the two connecting rods, and the lower end surface of the pressing plate is lower than the lower end surface of the die head.

[0009] In summary, the application has the following beneficial technical effects:

[0010] Through cooperation of the stamping upper die, the limiting device, the support frame, the torsion spring one and the torsion spring two, the die head and the pressing plate are driven to move downward by the upper die seat, the metal plate is fixed by the pressing plate, when the metal plate is bent by the die head, the metal plate is limited by the articulated connecting rod and the connecting rod to prevent deviation, manual fixing can be replaced, the connecting rod also plays a supporting and balancing role, stress concentration of the connecting rod and the articulated position is reduced, stability of the whole structure is improved, and the possibility of structural deformation and damage is reduced, compared with the prior art, the safety is high, the stability is good, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a first perspective three-dimensional structural schematic diagram of the application embodiment;

[0012] Fig. 2 is a second perspective three-dimensional structural schematic diagram of the application embodiment;

[0013] Fig. 3 is an enlarged schematic diagram of the structure at A of the application embodiment.

[0014] The drawings are explained as follows: 1, a bending machine; 2, a stamping upper die; 201, an upper die seat; 202, a die head; 3, a limiting device; 301, a pressing plate; 302, an antiskid pad; 4, a support frame; 401, a connecting rod; 402, a connecting rod; 403, a sliding shaft; 5, a damping rotating shaft; 6, an articulated shaft; 7, a torsion spring one; 8, a torsion spring two. DETAILED DESCRIPTION

[0015] The drawings are explained as follows: Figs. 1-3 The application is further explained in detail.

[0016] The application embodiment discloses a numerical control metal plate bending machine. Figs. 1-3 A numerical control metal plate bending machine comprises a bending machine 1, wherein the bending machine 1 is provided with a stamping upper die 2. The stamping upper die 2 comprises an upper die seat 201 arranged on the bending machine 1, and the upper die seat 201 is movable along the Z axis. Support frames 4 are arranged on both sides of the upper die seat 201. The support frame 4 comprises a connecting rod 401 articulated on the upper die seat 201, and the lower end of the connecting rod 401 is articulated with a limiting device 3 for pressing and fixing the metal plate.

[0017] The drawings are explained as follows: Fig. 2The limiting device 3 comprises a pressing plate 301 hinged to the connecting rod 401 through a damping hinge 5, and a torsional spring 7 is arranged at the hinge of the pressing plate 301 and the connecting rod 401. The bottom of the pressing plate 301 is provided with an anti-skid structure, such as an anti-skid pad 302, which can effectively increase the friction between the pressing plate 301 and the metal plate and improve the fixing effect. When the bending machine 1 controls the upper die holder 201 to move downward along the Z axis, the upper die holder 201 drives the die head 202 and the pressing plate 301 to move downward. Since the pressing plate 301 is hinged to the connecting rod 401 and is affected by the torsional spring 7, the pressing plate 301 can be fixed relative to the metal plate and press the metal plate.

[0018] With reference to Fig. 2 The connecting rod 401 is slidably hinged to the connecting rod 402, such as an L-shaped connecting rod 401 provided with a sliding groove, and a sliding shaft 403 is slidably arranged in the sliding groove and fixedly connected to the connecting rod 402.

[0019] With reference to Fig. 3 The upper end of the connecting rod 402 is hinged to the upper die holder 201 through a hinge shaft 6. The connecting rod 402 is hinged to the upper die holder 201 and plays a supporting and balancing role during the operation of the equipment, further improving the stability of the entire structure. The hinge shaft 6 is provided with a torsional spring 8 at the connection between the hinge shaft 6 and the connecting rod 401 and the upper die holder 201. During the entire process, the torsional spring 8 can provide certain buffering and resetting capability for the connecting rod 401 when it is subjected to lateral force, thereby reducing the stress concentration of the connecting rod 401 and its hinge.

[0020] With reference to Fig. 2 The upper die holder 201 is provided with a plurality of die heads 202, and the die heads 202 are located on the inner side of the two connecting rods 401. The lower end surface of the pressing plate 301 is lower than the lower end surface of the die head 202. When the die head 202 stamps and bends the metal plate, the metal plate may be raised due to stress and generate a large lateral force. At this time, the hinged connecting rod 401 and the connecting rod 402 can avoid the raising of the metal plate to a certain extent, and the connecting rod 402 can also limit the metal plate to prevent it from deviating.

[0021] The implementation principle of the numerical control metal plate bending machine is as follows: before the metal plate bending operation, first place the metal plate to be bent on the workbench of the bending machine 1 and adjust the position. Then start the bending machine 1, and the driving device of the bending machine 1 drives the upper die holder 201 to move downward along the Z axis. During the movement, the support frames 4 on both sides of the upper die holder 201 also move downward. Since the pressing plate 301 is hinged to the connecting rod 401 and is affected by the torsional spring 7, the pressing plate 301 will first contact the metal plate and press the metal plate tightly under the combined action of gravity and the torsional spring force, thereby firmly fixing the metal plate on the workbench, and no additional manual fixing operation is required.

[0022] When the upper die holder 201 continues to move downward, the die head 202 starts to perform the stamping and bending operation on the metal plate. During the bending process, the metal plate will be deformed due to the action force of the die head 202, and when the deformation degree is large, the metal plate can generate a lateral force and be lifted up. At this time, the connecting rod 401 will rotate around the hinge joint with the upper die holder 201 under the action of the lateral force of the metal plate, and the connecting rod 402 slidingly hinged on the connecting rod 401 will move within a certain range along with the rotation of the connecting rod 401, on the one hand, the connecting rod 402 can avoid the lifting of the metal plate and avoid hard collision with the equipment structure, on the other hand, the connecting rod 402 can limit the lateral displacement of the metal plate to prevent the metal plate from being excessively deviated under the action of the lateral force and affecting the bending accuracy. At the same time, the torsional spring two 8 stores energy when the connecting rod 401 rotates, and releases energy when the lateral force of the metal plate decreases or disappears, pushes the connecting rod 401 to reset, so that the entire equipment structure returns to the initial state or approaches the initial state, so as to perform the next bending operation.

[0023] During the entire bending process, the connecting rod 402 always plays a supporting and balancing role, which cooperates with the connecting rod 401 to uniformly disperse the force generated by the metal plate during the bending process to the entire support frame 4 structure, avoiding the situation of local force concentration, thereby effectively protecting the equipment structure, improving the stability and service life of the equipment, reducing the downtime maintenance time caused by structural deformation and damage, and improving the production efficiency.

[0024] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, which can be mechanical connection or electrical connection, or the internal communication of two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship can change;

[0025] Secondly: the utility model discloses the embodiment of the drawings only relates to the structure involved in the embodiment of the present disclosure, and other structures can refer to the usual design, and under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0026] Finally: the preferred embodiments of the utility model described above are only for the preferred embodiments of the utility model and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

[0027] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A CNC metal plate bending machine, comprising a bending machine (1), wherein a stamping upper die (2) is mounted on the bending machine (1), the stamping upper die (2) comprising an upper die holder (201) disposed on the bending machine (1), and the upper die holder (201) being movable along the Z-axis, characterized in that: Both sides of the upper die holder (201) are provided with support frames (4), the support frames (4) comprise connecting rods (401) hinged on the upper die holder (201), the lower ends of the connecting rods (401) are hinged with limiting devices (3) for pressing and fixing metal plates.

2. A CNC sheet bending machine according to claim 1, characterized in that: The limiting devices (3) comprise pressing plates (301) hinged on the connecting rods (401), torsion springs (7) are arranged at the hinged positions of the pressing plates (301) and the connecting rods (401), the bottoms of the pressing plates (301) are provided with anti-skid structures.

3. A CNC sheet bending machine according to claim 1, characterized in that: Connecting rods (402) are slidingly hinged on the connecting rods (401), the upper ends of the connecting rods (402) are hinged with the upper die holder (201), torsion springs (8) are arranged at the hinged positions of the connecting rods (402) and the upper die holder (201).

4. A CNC sheet bending machine according to claim 2, characterized in that: A plurality of punch heads (202) are arranged on the upper die holder (201), the punch heads (202) are located at the inner sides of the connecting rods (401) on both sides, and the lower end faces of the pressing plates (301) are lower than the lower end faces of the punch heads (202).

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