Servo bending machine operation protection device

Abstract

The utility model discloses an operation protection device for a servo bending machine, which comprises a hydraulic protection component fixed on a connecting rod of a sliding block of the bending machine, and the hydraulic protection component and the sliding block of the bending machine synchronously move up and down during working; the oil tank is arranged on the side wall of the machine tool and communicated with the hydraulic oil cylinder through a hydraulic oil cylinder oil return pipe; the hydraulic oil way integrated block is arranged between the oil tank and a hydraulic oil cylinder oil return pipe, and the oil return pipe is a bent pipe with a certain length; the electromagnetic valve is arranged on the hydraulic oil way integrated block and used for controlling the oil way to be opened and closed, the electromagnetic valve is opened when powered on, and oil in the hydraulic oil cylinder can return to the oil tank. When emergency circumstances occur and the servo motor is disconnected and enabled, the controller controls the electromagnetic valve to be disconnected at the first time, after the electromagnetic valve is disconnected, oil in the hydraulic oil cylinder cannot return to the oil tank, the hydraulic oil cylinder cannot contract, and therefore the sliding block which falls is jacked, and meanwhile the piston fixing ring is connected with the top of the machine tool to achieve the effect of avoiding falling.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to an operation protection device for a servo bending machine. Background Art

[0002] A bending machine is a sheet metal forming device. A pure electric servo bending machine uses a servo motor to drive a lead screw to rotate, and the up and down movement of the lead screw nut drives the die on the slider to press the sheet material into shape.

[0003] When a pure electric servo bending machine uses a synchronous belt and synchronous belt pulleys for power transmission, the synchronous belt may suddenly break due to mechanical fatigue, rubber aging, etc. If the synchronous belt breaks when the slider of the bending machine is running at high speed, serious consequences will occur; when the servo motor of a pure electric servo bending machine stalls, the servo motor will alarm and disable. When the servo motor is disabled, the motor is in an uncontrolled state, and the slider of the bending machine will automatically slide down due to its own weight, which will cause danger if not stopped urgently.

[0004] Therefore, the utility model provides an operation protection device for a servo bending machine to solve the above technical problems. Content of the Utility Model

[0005] Purpose of the utility model: To solve the problem in the prior art that when a pure electric servo bending machine uses a synchronous belt and synchronous belt pulleys for power transmission, the synchronous belt may suddenly break due to mechanical fatigue, rubber aging, etc., resulting in the motor being in an uncontrolled state when the servo motor is disabled, and the slider of the bending machine will automatically slide down due to its own weight, which will cause danger if not stopped urgently.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An operation protection device for a servo bending machine, comprising:

[0008] A hydraulic protection component, which is fixed on the connecting rod of the slider of the bending machine. During operation, the hydraulic protection component moves up and down synchronously with the slider of the bending machine. In an emergency, the hydraulic protection component protects the slider of the bending machine to prevent it from falling.

[0009] An oil tank, which is arranged on the side wall of the machine tool and is connected to the hydraulic cylinder through a hydraulic cylinder return oil pipe.

[0010] A hydraulic oil circuit integration block, which is arranged between the oil tank and the hydraulic cylinder return oil pipe. The return oil pipe is a bent pipe with a certain length.

[0011] A solenoid valve, which is arranged on the hydraulic oil circuit integration block. The solenoid valve is used to control the opening and closing of the oil circuit. When powered on, the solenoid valve opens, and the oil in the hydraulic cylinder can return to the oil tank.

[0012] Furthermore, the hydraulic protection assembly includes:

[0013] A hydraulic cylinder;

[0014] A hydraulic cylinder fixing ring for fixing the hydraulic cylinder on the connecting rod of the slider of the bending machine;

[0015] A hydraulic cylinder piston disposed in the hydraulic cylinder, and the moving position of the hydraulic cylinder piston is restricted within the hydraulic cylinder;

[0016] A piston fixing ring disposed on the top of the hydraulic cylinder piston and fixedly installed with the hydraulic cylinder piston, and the piston fixing ring is fixedly connected to the top of the machine tool.

[0017] Furthermore, the operation protection device is controlled by a controller. After the controller receives an alarm from the bending system, it disconnects the solenoid valve to prevent the oil in the hydraulic cylinder from returning to the fuel tank.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] By providing a hydraulic cylinder and a solenoid valve, when the bending machine is operating normally, the solenoid valve remains energized and the hydraulic cylinder moves with the slider of the bending machine. When an emergency occurs and causes the servo motor to be disabled, the controller controls the solenoid valve to be disconnected immediately. After the solenoid valve is disconnected, the oil in the hydraulic cylinder cannot return to the fuel tank, and the hydraulic cylinder cannot contract, thus holding up the falling slider. At the same time, the connection between the piston fixing ring and the top of the machine tool also plays a role in preventing the fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present utility model.

[0021] In the figure: 1. Piston fixing ring; 2. Hydraulic cylinder piston; 3. Hydraulic cylinder; 4. Solenoid valve; 5. Hydraulic oil circuit integration block; 6. Fuel tank; 7. Hydraulic cylinder oil return pipe; 8. Hydraulic cylinder fixing ring; 9. Bending machine slider; 10. Machine tool. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other instances, in order to avoid confusion with the present utility model, some well-known technical features are not described.

[0023] The applicant believes that when the pure electric servo bending machine in the prior art uses a synchronous belt and a synchronous pulley as power transmission, the synchronous belt may suddenly break due to mechanical fatigue, rubber aging, etc. When the servo motor is disconnected, the motor is in an uncontrolled state, and the bending machine slider will automatically slide down due to its own weight. If it is not stopped urgently, it will cause danger.

[0024] To this end, the applicant designed Figure 1 The servo bending machine operation protection device shown includes: a hydraulic protection component, which is fixed on the connecting rod of the bending machine slider 9. When working, the hydraulic protection component and the bending machine slider 9 move up and down synchronously; an oil tank 6, which is arranged on the side wall of the machine tool 10 and is connected to the hydraulic cylinder 3 through the return oil pipe of the hydraulic cylinder 3; a hydraulic oil circuit integrated block 5, which is arranged between the oil tank 6 and the hydraulic cylinder return oil pipe 7, and the return oil pipe 7 is a curved pipe with a certain length; a solenoid valve 4, which is arranged on the hydraulic oil circuit integrated block 5, and the solenoid valve 4 is used to control the opening and closing of the oil circuit. When the solenoid valve 4 is powered on, it opens, and the oil in the hydraulic cylinder 3 can return to the oil tank 6.

[0025] The servo bending machine operation protection device of this embodiment is further optional, and the hydraulic protection component includes: a hydraulic cylinder 3; a hydraulic cylinder fixing ring 8, the hydraulic cylinder fixing ring 8 is used to fix the hydraulic cylinder 3 on the connecting rod of the bending machine slider 9; a hydraulic cylinder piston 2, the hydraulic cylinder piston 2 is arranged in the hydraulic cylinder 3, and the movable position of the hydraulic cylinder piston 2 is limited in the hydraulic cylinder 3; a piston fixing ring 1, the piston fixing ring 1 is arranged on the top of the hydraulic cylinder piston 2, and is fixedly installed with the hydraulic cylinder piston 2, and the piston fixing ring 1 is fixedly connected to the top of the machine tool 10.

[0026] The servo bending machine operation protection device of this embodiment is further optional. The operation protection device is controlled by a controller. After receiving an alarm from the bending system, the controller disconnects the solenoid valve 4 to prevent the oil in the hydraulic cylinder 3 from returning to the oil tank 6.

[0027] Working principle: By setting the hydraulic cylinder 3 and the solenoid valve 4, when the bending machine is in normal operation, the solenoid valve 4 remains energized, and the hydraulic cylinder 3 moves with the slider of the bending machine. When encountering an emergency, such as a servo alarm, a bending system alarm, etc., the controller receives a signal and controls to disconnect the solenoid valve 4 at the first time. After the solenoid valve 4 is disconnected, the oil in the hydraulic cylinder 3 cannot return to the oil tank 6, so that the hydraulic cylinder 3 cannot shrink, thereby supporting the falling slider. At the same time, the piston fixing ring 1 is connected to the top of the machine tool 10 to prevent it from falling.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A servo bending machine operation protection device, characterized in that: include: A hydraulic protection component is fixed on the connecting rod of the bending machine slider. When working, the hydraulic protection component and the bending machine slider move up and down synchronously. In an emergency, the hydraulic protection component protects the bending machine slider to prevent it from falling; An oil tank, which is arranged on the side wall of the machine tool and is connected to the hydraulic cylinder through a hydraulic cylinder return pipe; A hydraulic oil circuit integrated block, wherein the hydraulic oil circuit integrated block is arranged between the oil tank and the oil return pipe of the hydraulic cylinder, and the oil return pipe is a curved pipe with a certain length; The solenoid valve is arranged on the hydraulic oil circuit integrated block. The solenoid valve is used to control the opening and closing of the oil circuit. When power is turned on, the solenoid valve opens, and the oil in the hydraulic cylinder can return to the oil tank.

2. A servo bending machine operation protection device according to claim 1, characterized in that: The hydraulic protection assembly comprises: Hydraulic cylinder; A hydraulic cylinder fixing ring, which is used to fix the hydraulic cylinder on the connecting rod of the bending machine slider; A hydraulic cylinder piston, wherein the hydraulic cylinder piston is disposed in a hydraulic cylinder, and the movable position of the hydraulic cylinder piston is limited within the hydraulic cylinder; A piston fixing ring is arranged on the top of the hydraulic cylinder piston and fixedly installed with the hydraulic cylinder piston. The piston fixing ring is fixedly linked to the top of the machine tool.

3. The servo bending machine operation protection device according to claim 1 is characterized in that: The operation protection device is controlled by the controller. After receiving the bending system alarm, the controller disconnects the solenoid valve to prevent the oil in the hydraulic cylinder from returning to the oil tank.

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