Grabbing device for mechanical arm of bending machine

Abstract

The utility model relates to a gripping device for a mechanical arm of a bending machine, which is characterized by comprising a clamping base, a fixed clamping surface is arranged at the front end of the clamping base, an anti-skid plate is mounted on the fixed clamping surface, a movable clamping jaw is mounted in the clamping base, the movable clamping jaw is rotatably connected with the clamping base, and a thrust cylinder is mounted at the rear end of the clamping base. The end of a piston rod of the thrust cylinder is provided with a transmission mechanism, the transmission mechanism is connected with the movable clamping jaw, the movable clamping jaw is driven by the thrust cylinder to rotate, the rear end of a cylinder body of the thrust cylinder is provided with a connecting plate, the rear side of the connecting plate is fixedly provided with a hinged support, and the hinged support is used for being connected to a mechanical arm of the bending machine. The mechanical arm of the bending machine meets the requirement for grabbing small sheet metal parts; the automation degree is high; the structure is simple, disassembly and maintenance are easy, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a grabbing device for a mechanical arm of a bending machine. Background Art

[0002] CNC bending machine is a mechanical equipment used for bending metal sheets. With the advancement of science and technology, CNC bending machines are developing towards high precision, high production efficiency, multi-axis, intelligence and flexibility. In the current situation of worker shortage, compared with general bending machines, intelligent CNC bending machines have more superior performance. The existing bending machines and the mechanical arms of bending machines will encounter difficulties when facing small sheet metal parts that need to be bent, because the suction cups will be difficult to absorb firmly, making it difficult to automatically bend small sheet metal parts (size below 300mm×400mm), which will cause operators to frequently enter the working area of ​​the machine tool. This is not only time-consuming and labor-intensive, but also brings safety hazards. Therefore, it is necessary to design a gripping device for the mechanical arm of the bending machine, specifically for small sheet metal parts. Summary of the invention

[0003] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a grasping device for a bending machine robot arm.

[0004] The specific scheme of the utility model is: a grasping device for a mechanical arm of a bending machine, comprising a clamping base, a fixed clamping surface is provided at the front end of the clamping base, an anti-skid plate is installed on the fixed clamping surface, a movable clamping claw is installed in the clamping base, the movable clamping claw is rotatably connected with the clamping base, a thrust cylinder is installed at the rear end of the clamping base, a transmission mechanism is installed at the end of the piston rod of the thrust cylinder, the transmission mechanism is connected with the movable clamping claw, and the movable clamping claw is driven to rotate by the thrust cylinder, a connecting plate is installed at the rear end of the cylinder body of the thrust cylinder, a hinge support is fixedly installed on the rear side of the connecting plate, and the hinge support is used to be connected to the mechanical arm of the bending machine.

[0005] Furthermore, the transmission mechanism includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is hinged to the end of the piston rod, the top of the second connecting rod is hinged to one end of the movable clamp, the bottom end of the third connecting rod is hinged to the clamping base, the bottom end of the second connecting rod is hinged to the top of the third connecting rod, and the other end of the first connecting rod is hinged to the bottom end of the second connecting rod and the top of the third connecting rod at the same time.

[0006] Furthermore, both ends of the anti-slip plate are connected to the fixed clamping surface by bolts, and the top surface of the anti-slip plate is provided with anti-slip patterns.

[0007] Furthermore, the thrust cylinder adopts an air cylinder, one side of the air cylinder is provided with an air inlet and outlet joint, the outer end of the air inlet and outlet joint is connected to a valve group through an air pipe, and the valve group is connected to the control system signal of the bending machine.

[0008] Furthermore, a sensor is provided inside the cylinder, and the sensor is connected to the control system signal of the bending machine.

[0009] Furthermore, a mounting groove is provided on the top surface of the clamping base, and the mounting groove is arranged through in the front-to-back direction. The transmission mechanism is installed in the mounting groove, and the movable clamp is installed at the front end top of the mounting groove.

[0010] Furthermore, a clamping block is provided between the rear end of the clamping base and the thrust cylinder, and a groove corresponding to the mounting groove is provided on the clamping block.

[0011] Compared with the prior art, the utility model has the following advantages: the requirement of the bending machine mechanical arm grasping small sheet metal parts is realized; the degree of automation is high; the structure is simple, easy to disassemble and maintain, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded view of the utility model;

[0013] Figure 2 It is a cross-sectional view of the internal structure of the utility model;

[0014] Figure 3 yes Figure 2 AA view;

[0015] In the figure: 1. clamping block; 2. clamping base; 21. fixed clamping surface; 22. mounting groove; 3. anti-slip plate; 4. movable clamping claw; 5. second connecting rod; 6. third connecting rod; 7. first connecting rod; 8. cylinder; 81. inlet and outlet air joints; 82. sensor; 9. connecting plate; 10. hinge support. DETAILED DESCRIPTION

[0016] See also Figure 1-3 The present embodiment is a gripping device for a mechanical arm of a bending machine, comprising a clamping base 2, a fixed clamping surface 21 is provided at the front end of the clamping base 2, an anti-skid plate 3 is installed on the fixed clamping surface 21, a movable clamping claw 4 is installed in the clamping base 2, and the movable clamping claw 4 is rotatably connected to the clamping base 2, a thrust cylinder is installed at the rear end of the clamping base 2, a transmission mechanism is installed at the end of the piston rod of the thrust cylinder, and the transmission mechanism is connected to the movable clamping claw 4, and the movable clamping claw 4 is driven to rotate by the thrust cylinder, and a connecting plate 9 is installed at the rear end of the cylinder body of the thrust cylinder, and a hinge support 10 is fixedly installed on the rear side of the connecting plate 9, and the hinge support 10 is used to be connected to the mechanical arm of the bending machine.

[0017] Furthermore, the transmission mechanism includes a first connecting rod 7, a second connecting rod 5 and a third connecting rod 6, one end of the first connecting rod 7 is hinged to the end of the piston rod, the top of the second connecting rod 5 is hinged to one end of the movable clamp 4, the bottom end of the third connecting rod 6 is hinged to the clamping base 2, the bottom end of the second connecting rod 5 is hinged to the top of the third connecting rod 6, and the other end of the first connecting rod 7 is hinged to the bottom end of the second connecting rod 5 and the top of the third connecting rod 6 at the same time.

[0018] Furthermore, both ends of the anti-slip plate 3 are connected to the fixed clamping surface 21 by bolts, and the top surface of the anti-slip plate 3 is provided with anti-slip textures.

[0019] Furthermore, the thrust cylinder adopts a cylinder 8, and an air inlet and outlet joint 81 is provided on one side of the cylinder 8. The outer end of the air inlet and outlet joint 81 is connected to a valve group through an air pipe, and the valve group is connected to the control system signal of the bending machine.

[0020] Furthermore, a sensor 82 is provided inside the cylinder 8, and the sensor 82 is connected to the control system signal of the bending machine.

[0021] Furthermore, a mounting groove 22 is provided on the top surface of the clamping base 2 , and the mounting groove 22 is arranged through in the front-to-back direction. The transmission mechanism is installed in the mounting groove 22 , and the movable clamping jaw 4 is installed at the front end top of the mounting groove 22 .

[0022] Furthermore, a clamping block 1 is provided between the rear end of the clamping base 2 and the thrust cylinder, and a groove corresponding to the mounting groove 22 is provided on the clamping block 1 .

[0023] The utility model is controlled by the control system of the bending machine. As the mechanical arm moves, when executing the command to grab the workpiece, the sensor 82 receives the signal, and controls the air inlet and outlet joints 81 on the cylinder 8 through the valve group, and the piston rod of the cylinder 8 starts to move forward. At the same time, the reset spring inside the cylinder 8 is compressed, and the piston rod pushes the first connecting rod 7, and the first connecting rod 7 drives the second connecting rod 5 and the third connecting rod 6. The movable clamp 4 is driven to rotate through the second connecting rod 5, and the front end of the movable clamp 4 will press down the small sheet metal part that needs to be bent, so that the small sheet metal part is pressed onto the anti-slip plate 3, thus completing the grabbing action.

[0024] When the utility model executes the workpiece release instruction, the sensor 82 receives the signal, the valve group controls the air inlet and outlet joints 81 of the cylinder 8 to start to discharge air, and at the same time the reset spring inside the cylinder 8 starts to reset, and the piston rod is reset and retracted backwards along with the spring, and the piston rod simultaneously pulls the first connecting rod 7 and drives the second connecting rod 5 and the third connecting rod 6, and the second connecting rod 5 drives the movable clamp 4 to rotate, and the front end of the movable clamp 4 rotates upward to leave the small sheet metal part, thus completing the release action.

Claims

1. A gripping device for a bending machine robot arm, characterized by: It includes a clamping base, a fixed clamping surface is provided at the front end of the clamping base, an anti-skid plate is installed on the fixed clamping surface, a movable clamping claw is installed in the clamping base, the movable clamping claw is rotatably connected with the clamping base, a thrust cylinder is installed at the rear end of the clamping base, a transmission mechanism is installed at the end of the piston rod of the thrust cylinder, the transmission mechanism is connected with the movable clamping claw, and the movable clamping claw is driven to rotate by the thrust cylinder, a connecting plate is installed at the rear end of the cylinder body of the thrust cylinder, a hinge support is fixedly installed on the rear side of the connecting plate, and the hinge support is used to connect to the mechanical arm of the bending machine.

2. The gripping device for a bending machine robot arm according to claim 1 is characterized in that: The transmission mechanism includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is hinged to the end of the piston rod, the top end of the second connecting rod is hinged to one end of the movable clamping claw, the bottom end of the third connecting rod is hinged to the clamping base, the bottom end of the second connecting rod is hinged to the top end of the third connecting rod, and the other end of the first connecting rod is hinged to the bottom end of the second connecting rod and the top end of the third connecting rod at the same time.

3. The gripping device for a bending machine robot arm according to claim 1 is characterized in that: The two ends of the anti-slip plate are connected to the fixed clamping surface through bolts, and the top surface of the anti-slip plate is provided with anti-slip patterns.

4. The gripping device for a bending machine robot arm according to claim 1 is characterized in that: The thrust cylinder adopts an air cylinder, one side of the air cylinder is provided with an air inlet and outlet joint, the outer end of the air inlet and outlet joint is connected to a valve group through an air pipe, and the valve group is connected to the control system signal of the bending machine.

5. The gripping device for a bending machine robot arm according to claim 4 is characterized in that: A sensor is arranged inside the cylinder, and the sensor is connected with the control system signal of the bending machine.

6. The gripping device for a bending machine robot arm according to claim 1 is characterized in that: The top surface of the clamping base is provided with a mounting groove, which is arranged through in the front-to-back direction, the transmission mechanism is installed in the mounting groove, and the movable clamping claw is installed at the front end top of the mounting groove.

7. The gripping device for a bending machine robot arm according to claim 6 is characterized in that: A clamping block is arranged between the rear end of the clamping base and the thrust cylinder, and a groove corresponding to the mounting groove is arranged on the clamping block.

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