Clamping device for metal plate bending machine

Abstract

The utility model discloses a clamping device for a metal plate bending machine. The clamping device comprises a fixing plate. A transmission mechanism is installed at the center position in the fixing plate, and a clamping mechanism is installed on the outer side of the transmission mechanism in a transmission mode. The clamping mechanism, the telescopic rod, the clamping plate and the pressure sensor are used in cooperation, a metal plate is clamped and fixed through the clamping mechanism, the telescopic rod works to drive the clamping plate to move, the bottom of the clamping plate is made to be attached to the surface of the metal plate, the clamping plate is driven to apply secondary clamping force to the metal plate, and therefore the metal plate can be better clamped; the pressure sensor can detect the pressure applied to the metal plate by the device, the damage to the metal plate caused by overlarge clamping force of the device is avoided, the multi-point clamping design is adopted, the clamping force is ensured to be uniformly distributed so as to adapt to the metal plates with different sizes and shapes, the clamping stability is improved, the sliding and deviation of the metal plate in the bending process are reduced, and the bending efficiency is improved. And therefore, the clamping effect of the device on the metal plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal clamping, in particular to a clamping device for a sheet metal bending machine. Background Technique

[0002] Sheet metal is a comprehensive cold working process for metal sheets, which covers various process steps such as shearing, punching / cutting, compounding, folding, riveting, splicing, forming, etc. The remarkable feature of sheet metal processing is that the thickness of the same part is consistent, and in the processing process, manual or die stamping is often used to make the metal sheet undergo plastic deformation to form the required shape and size. The bending device is a mechanical device in the sheet metal processing process. When bending sheet metal, a clamping device is needed to fix the sheet metal, and then the sheet metal can be bent.

[0003] The clamping device can fix and clamp the sheet metal. However, the existing clamping device is not reasonably designed, and the clamping end is a plane. When the sheet metal surface is not parallel, it is easy to cause uneven distribution of the clamping force of the device, resulting in sliding or offset of the sheet metal during the bending process, affecting the bending accuracy, and even causing damage to the sheet metal. When the clamping force is too large and exceeds the bearing limit of the sheet metal, plastic deformation occurs near the clamping point of the sheet metal, affecting the dimensional accuracy and appearance quality of the sheet metal part, and further affecting the clamping effect of the clamping device on the sheet metal. Content of the Utility Model

[0004] The purpose of the utility model is to provide a clamping device for a sheet metal bending machine to solve the problems mentioned in the above background technique, that is, the clamping device can fix and clamp the sheet metal, but the existing clamping device is not reasonably designed, the clamping end is a plane, when the sheet metal surface is not parallel, it is easy to cause uneven distribution of the clamping force of the device, resulting in sliding or offset of the sheet metal during the bending process, affecting the bending accuracy, and even causing damage to the sheet metal. When the clamping force is too large and exceeds the bearing limit of the sheet metal, plastic deformation occurs near the clamping point of the sheet metal, affecting the dimensional accuracy and appearance quality of the sheet metal part, and further affecting the clamping effect of the clamping device on the sheet metal.

[0005] The utility model provides the following technical solution: A clamping device for a sheet metal bending machine, including a fixing plate; a transmission mechanism is installed at the central position inside the fixing plate, a clamping mechanism is installed on the outside of the transmission mechanism in a transmission manner, an auxiliary mechanism is installed at the inner bottom of the clamping mechanism, and placing platforms are installed at both ends of the top of the fixing plate close to the transmission mechanism;

[0006] The auxiliary mechanism includes a telescopic rod, a clamping plate and a pressure sensor. A telescopic rod is installed at the inner bottom of the clamping mechanism, a clamping plate is rotatably installed on the outside of the moving end of the telescopic rod, and a pressure sensor is installed at the bottom of the clamping plate.

[0007] Preferably, the transmission mechanism includes a support column, a motor, and a threaded rod. A support column is installed at the central position of the top of the fixed plate, a motor is installed at the central position inside the fixed plate, and a threaded rod is rotatably installed inside the support column at the output end of the motor.

[0008] Preferably, guide rods are installed at both ends of the support column, and the clamping mechanism moves outside the guide rods.

[0009] Preferably, the clamping mechanism includes a connecting frame and a clamping plate. A connecting frame is installed outside the threaded rod, and a clamping plate is installed at the inner top of one end of the connecting frame.

[0010] Preferably, a storage groove is provided inside the clamping plate, and an auxiliary mechanism is connected inside the storage groove.

[0011] Preferably, a cylindrical magnet is installed at the inner top of one end of the clamping plate, and a fixing groove is provided inside one end of the placing table.

[0012] Preferably, a ring electromagnet is installed inside one end of the fixing groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model uses the clamping mechanism, telescopic rod, clamping plate, and pressure sensor in cooperation. The clamping mechanism is used to clamp and fix the sheet metal. The telescopic rod works to drive the clamping plate to move, so that the bottom of the clamping plate fits the surface of the sheet metal. By driving the clamping plate to apply a secondary clamping force to the sheet metal, the sheet metal can be clamped better. The pressure sensor can detect the pressure applied by the device to the sheet metal, avoiding damage to the sheet metal caused by excessive clamping force of the device. By adopting a multi-point clamping design, it ensures that the clamping force is evenly distributed to adapt to sheet metals of different sizes and shapes, improves the clamping stability, reduces the sliding and offset of the sheet metal during the bending process, and thus can improve the clamping effect of the device on the sheet metal.

[0015] 2. The present utility model uses the cylindrical magnet, fixing groove, and ring electromagnet in cooperation. By inserting the cylindrical magnet into the fixing groove, it can play a preliminary limiting role in the movement of the clamping plate. By adjusting the direction and magnitude of the current in the ring electromagnet, the magnetic field generated by the electromagnet is opposite to the magnetic pole direction of the cylindrical magnet, so as to generate sufficient attraction to overcome the gravity of the cylindrical magnet and other possible resistances. The ring electromagnet can fix the position of the cylindrical magnet inside the fixing groove, and thus can play an auxiliary fixing role in the clamping distance between the clamping plate and the placing table for the sheet metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the side of the present utility model;

[0018] Figure 3 Schematic diagram of the internal structure of the clamping plate part of the present utility model;

[0019] Figure 4 For the present utility model Figure 1 Partial enlarged structural schematic diagram of A in it.

[0020] In the figure: 1, fixed plate; 101, placement table; 102, fixed groove; 103, ring electromagnet; 2, transmission mechanism; 201, support column; 202, motor; 203, threaded rod; 3, clamping mechanism; 301, connecting frame; 302, clamping plate; 4, auxiliary mechanism; 401, telescopic rod; 402, clamping plate; 403, pressure sensor; 5, cylindrical magnet; 6, guide rod; 7, storage groove. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] The following further elaborates on the technical solutions of the present utility model in conjunction with the accompanying drawings of the specification and specific embodiments;

[0025] Embodiment 1:

[0026] A clamping device for a sheet metal bending machine provided by the present application includes a fixing plate 1; a transmission mechanism 2 is installed at the central position inside the fixing plate 1, a clamping mechanism 3 is installed on the outside of the transmission mechanism 2 in a transmission manner, an auxiliary mechanism 4 is installed at the inner bottom of the clamping mechanism 3, and placing platforms 101 are installed at both ends of the top of the fixing plate 1 close to the transmission mechanism 2;

[0027] The auxiliary mechanism 4 includes a telescopic rod 401, a clamping plate 402 and a pressure sensor 403. The telescopic rod 401 is installed at the inner bottom of the clamping mechanism 3, the clamping plate 402 is rotatably installed on the outside of the moving end of the telescopic rod 401, and the pressure sensor 403 is installed at the bottom of the clamping plate 402;

[0028] Specifically, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the transmission mechanism 2 is used to adjust the position of the clamping mechanism 3. The sheet metal can be clamped and fixed by the clamping mechanism 3. The auxiliary mechanism 4 is used to adjust the clamping force of the clamping mechanism 3 on the sheet metal. The model of the telescopic rod 401 is a DC 6 / 12 / 24 electric lifting rod telescopic rod. By placing the sheet metal on the surface of the placing platform 101, and then clamping and fixing it by the clamping mechanism 3. At the same time, through the operation of the telescopic rod 401, the telescopic end of the telescopic rod 401 drives the clamping plate 402 to move, so that the bottom of the clamping plate 402 fits the surface of the sheet metal. By driving the clamping plate 402 to apply a secondary clamping force to the sheet metal, the sheet metal part can be clamped better. The pressure applied by the device to the sheet metal can be detected by the pressure sensor 403.

[0029] Furthermore, the transmission mechanism 2 includes a support column 201, a motor 202 and a threaded rod 203. The support column 201 is installed at the central position of the top of the fixing plate 1, the motor 202 is installed at the central position inside the fixing plate 1, and the threaded rod 203 is rotatably installed inside the support column 201 at the output end of the motor 202;

[0030] Furthermore, guide rods 6 are installed at both ends of the support column 201, and the clamping mechanism 3 moves on the outside of the guide rods 6;

[0031] Specifically, as Figure 1 and Figure 2As shown in the figure, in order to adjust the use position of the clamping mechanism 3, the threaded rod 203 is rotatably arranged inside the support column 201. The output end of the motor 202 is connected to the threaded rod 203. By driving the threaded rod 203 to rotate through the operation of the motor 202, the clamping mechanism 3 outside the threaded rod 203 can be promoted to move, and then the use position of the clamping mechanism 3 can be adjusted. When the clamping mechanism 3 moves, the clamping mechanism 3 will move along the outside of the guide rod 6. Through the guide rod 6, the movement of the clamping mechanism 3 can be kept horizontal.

[0032] Furthermore, the clamping mechanism 3 includes a connecting frame 301 and a clamping plate 302. The connecting frame 301 is installed outside the threaded rod 203, and the clamping plate 302 is installed on the inner top of one end of the connecting frame 301.

[0033] Specifically, as Figure 1 and Figure 2 shown in the figure, in order to fix the sheet metal, the clamping plate 302 is connected to the threaded rod 203 through the connecting frame 301. By placing the sheet metal on the surface of the placing table 101, when the clamping plate 302 moves downward under the action of the rotational transmission of the threaded rod 203, the sheet metal on the surface of the placing table 101 can be fixed, which is convenient for other devices to perform bending processing on the sheet metal in the later stage.

[0034] Furthermore, a storage groove 7 is provided inside the clamping plate 302, and an auxiliary mechanism 4 is connected inside the storage groove 7.

[0035] Specifically, as Figure 3 shown in the figure, in order to facilitate the storage of the auxiliary mechanism 4, when the auxiliary mechanism 4 is not in use, the auxiliary mechanism 4 will be located inside the storage groove 7, and the auxiliary mechanism 4 can be stored through the storage groove 7.

[0036] Furthermore, a cylindrical magnet 5 is installed on the inner top of one end of the clamping plate 302, and a fixing groove 102 is provided inside one end of the placing table 101.

[0037] Furthermore, a ring electromagnet 103 is installed inside one end of the fixing groove 102.

[0038] Specifically, as Figure 1 、 Figure 2 and Figure 4As shown, in order to assist in fixing the moving position of the clamping plate 302, when the clamping plate 302 moves, the cylindrical magnet 5 at the inner top of the clamping plate 302 will be inserted into the inside of the fixing groove 102. By inserting the cylindrical magnet 5 into the inside of the fixing groove 102, a preliminary limiting effect can be achieved on the movement of the clamping plate 302. At the same time, by adjusting the direction and magnitude of the current in the ring electromagnet 103, the magnetic field generated by the electromagnet is opposite to the magnetic pole direction of the cylindrical magnet 5, so as to generate sufficient attraction to overcome the gravity of the cylindrical magnet 5 and other possible resistances. The position of the cylindrical magnet 5 inside the fixing groove 102 can be fixed by the ring electromagnet 103, so that an auxiliary fixing effect can be achieved on the clamping distance between the clamping plate 302 and the placement table 101 for the sheet metal clamping.

[0039] Working principle: Place the sheet metal on the surface of the placement table 101, and then drive the rotation of the threaded rod 203 through the operation of the motor 202, which can promote the movement of the clamping plate 302 outside the threaded rod 203. When the clamping plate 302 moves downward under the action of the rotation transmission of the threaded rod 203, the sheet metal on the surface of the placement table 101 can be clamped and fixed. Then, drive the movement of the clamping plate 402 through the operation of the telescopic rod 401, so that the bottom of the clamping plate 402 fits the surface of the sheet metal. By driving the clamping plate 402 to apply a secondary clamping force to the sheet metal, the sheet metal part can be clamped better.

[0040] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A clamping device for a sheet metal bending machine, comprising a fixing plate (1); characterized in that: A transmission mechanism (2) is installed at the central position inside the fixed plate (1). A clamping mechanism (3) is installed on the outside of the transmission mechanism (2) for transmission. An auxiliary mechanism (4) is installed at the inner bottom of the clamping mechanism (3). Placement platforms (101) are installed at both ends of the top of the fixed plate (1) close to the transmission mechanism (2); The auxiliary mechanism (4) includes a telescopic rod (401), a clamping plate (402), and a pressure sensor (403). The telescopic rod (401) is installed at the inner bottom of the clamping mechanism (3). The clamping plate (402) is rotatably installed on the outside of the moving end of the telescopic rod (401). The pressure sensor (403) is installed at the bottom of the clamping plate (402).

2. The clamping device for a sheet metal bending machine according to claim 1, characterized in that: The transmission mechanism (2) includes a support column (201), a motor (202), and a threaded rod (203). The support column (201) is installed at the central position of the top of the fixed plate (1). The motor (202) is installed at the central position inside the fixed plate (1). The threaded rod (203) is rotatably installed inside the support column (201) at the output end of the motor (202).

3. The clamping device for a sheet metal bending machine according to claim 2, wherein: Guide rods (6) are installed at both ends of the support column (201). The clamping mechanism (3) moves on the outside of the guide rods (6).

4. A clamping device for a sheet metal bending machine according to claim 1, characterized in that: The clamping mechanism (3) includes a connecting frame (301) and a clamping plate (302). The connecting frame (301) is installed on the outside of the threaded rod (203). The clamping plate (302) is installed at the inner top of one end of the connecting frame (301).

5. The clamping device for a sheet metal bending machine according to claim 4, characterized in that: A storage groove (7) is provided inside the clamping plate (302). The auxiliary mechanism (4) is connected inside the storage groove (7).

6. The clamping device for a sheet metal bending machine according to claim 4, characterized in that: A cylindrical magnet (5) is installed at the inner top of one end of the clamping plate (302). A fixing groove (102) is provided inside one end of the placement platform (101).

7. The clamping device for a sheet metal bending machine according to claim 6, characterized in that: A ring electromagnet (103) is installed inside one end of the fixing groove (102).

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