Electric servo motor controlled flash butt welding machine

Abstract

The utility model provides an electric servo motor control flash butt welding machine which comprises a machine body and a control cabinet, an industrial personal computer is arranged on the control cabinet, and the industrial personal computer is electrically connected with a servo control screen. A servo motor, a top forging conveying cylinder and a servo motor moving lead screw are installed on one side of the machine body, the top forging conveying cylinder and the servo motor moving lead screw are arranged below the servo motor, a transmission belt is arranged on the left side of the servo motor, one end of the servo motor moving lead screw is connected with the transmission belt, and the other end of the servo motor moving lead screw is connected with the top forging conveying cylinder. A left electrode and a right electrode are installed on the top of the machine body, chain ring clamping devices are arranged below the left electrode and the right electrode, the chain ring clamping devices are installed on the machine body, the number of the chain ring clamping devices is two, the two chain ring clamping devices are symmetrically installed, and a welding ring inlet is formed between the two chain ring clamping devices. The utility model relates to the field of flash butt welding machines, and can effectively avoid stroke deviation caused by speed fluctuation or hysteresis of a traditional electro-hydraulic servo valve through accurate closed-loop control of an electric servo motor on a welding path.

Description

Technical Field

[0001] This utility model relates to the field of flash butt welding machines, and in particular to an electric servo motor controlled flash butt welding machine. Background Technology

[0002] Currently, most flash butt welding machines use electro-hydraulic servo valves to control the back-and-forth movement of the welding machine's top cylinder to achieve positioning. However, since most flash butt welding machines use current as a reference to move the top cylinder, if the current feedback is not timely, it will cause lag or even delay in the movement, resulting in unpredictable consequences for the entire welding process, such as unstable welding, overheating of the weld ring or excessively large hot zone, and unstable product quality. Utility Model Content

[0003] In view of this, the present invention aims to propose an electric servo motor controlled flash butt welding machine, which solves the problems of inaccurate control by servo valve and deviation of displacement sensor in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An electric servo motor controlled flash butt welding machine includes a machine body and a control cabinet. The control cabinet is equipped with an industrial computer, which is electrically connected to a servo control panel. A servo motor, a top-forging conveying cylinder, and a servo motor motion screw are installed on one side of the machine body. The top-forging conveying cylinder and the servo motor motion screw are arranged below the servo motor. A transmission belt is provided on the left side of the servo motor. One end of the servo motor motion screw is connected to the transmission belt, and the other end is connected to the top-forging conveying cylinder.

[0006] The bottom of the top forging conveying cylinder is provided with a fixed base plate, which is welded to the machine body;

[0007] Left and right electrodes are installed on the top of the machine body. A chain clamping device is provided below the left and right electrodes. The chain clamping device is installed on the machine body. There are two chain clamping devices. The two chain clamping devices are installed symmetrically, and a welding ring inlet is provided between the two chain clamping devices.

[0008] Furthermore, the servo motor is electrically connected to the control cabinet.

[0009] Furthermore, the servo motor motion screw is connected to a connecting frame, which is welded to one side of the machine body. The servo motor motion screw is fixed to the top forging conveying cylinder on one side of the machine body through the connecting frame.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] The electric servo motor controlled flash butt welding machine of this utility model simplifies the complex structure and workflow of existing servo control adjustment, improves productivity, reduces equipment maintenance difficulty, simplifies the various parameters that need to be adjusted during welding, eliminates many factors such as inaccuracy or lag in the control process of servo valves, and ensures the balance and stability of the equipment in the hydraulic control system. This not only ensures the mechanical performance of the product, but also reduces the production cost of the product. Furthermore, the flash butt welding machine of this utility model uses automated machinery to replace manual operation of the product, which greatly reduces the labor intensity of the operator. Attached Figure Description

[0012] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the electric servo motor controlled flash butt welding machine according to an embodiment of the present invention;

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. Machine body; 2. Left and right electrodes; 3. Chain clamping device; 4. Top forging conveying cylinder; 5. Servo motor motion screw; 6. Transmission belt; 7. Servo motor; 8. Control cabinet; 9. Industrial computer; 10. Welding ring inlet; 11. Servo control panel. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0017] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] This embodiment relates to an electric servo motor-controlled flash butt welding machine. Through precise closed-loop control of the welding path by the electric servo motor 7, stroke deviations caused by speed fluctuations or hysteresis in traditional electro-hydraulic servo valves, such as overfeeding and response delays, can be effectively avoided, thus eliminating problems such as welding instability and overheating of the weld ring. This design improves welding accuracy while ensuring the stability of equipment operation and the reliability of product quality, and significantly reduces the risk of equipment failure caused by control errors.

[0020] Based on the above design concept, an exemplary structure of the electric servo motor controlled flash butt welding machine in this embodiment is as follows: Figure 1 As shown, it mainly includes a machine body 1 and a control cabinet 8. The control cabinet 8 is equipped with an industrial computer 9, which is electrically connected to a servo control panel 11. A servo motor 7, a top-forging conveying cylinder 4, and a servo motor motion screw 5 are installed on one side of the machine body 1. The top-forging conveying cylinder 4 and the servo motor motion screw 5 are arranged below the servo motor 7. A transmission belt 6 is provided on the left side of the servo motor 7. One end of the servo motor motion screw 5 is connected to the transmission belt 6, and the other end is connected to the top-forging conveying cylinder 4. A fixed base plate is provided at the bottom of the top-forging conveying cylinder 4, and the fixed base plate is welded to the machine body 1. Left and right electrodes 2 are installed on the top of the machine body 1. A chain clamping device 3 is provided below the left and right electrodes 2. The chain clamping device 3 is installed on the machine body 1. There are two chain clamping devices 3, which are installed symmetrically, and a welding ring inlet 10 is provided between the two chain clamping devices 3.

[0021] Servo motor 7 is electrically connected to control cabinet 8; servo motor motion screw 5 is connected to a connecting frame, which is welded to one side of machine body 1. Servo motor motion screw 5 is fixed to one side of machine body 1 via the connecting frame and top forging conveying cylinder 4.

[0022] The top-forging conveyor cylinder 4 and the servo motor motion screw 5 are installed on one side of the machine body 1. To prevent the top-forging conveyor cylinder 4 from being subjected to excessive force during the forging process and causing the cylinder body to fall off, a fixed base plate is welded to the bottom side of the top-forging conveyor cylinder 4, and the length of the base plate is extended to increase the load-bearing capacity. The other end of the servo motor motion screw 5 is connected to the transmission belt 6, which is connected to the upper servo motor 7 to drive the motor. In order to ensure that the forging action and the servo motion do not affect each other, the top-forging conveyor cylinder 4 and the servo motor motion screw 5 operate separately to ensure the normal operation of the action. The motion feed action of the flash butt welding machine can be controlled by the servo motor 7. The servo motor 7 is connected to the welding control cabinet 8. On the one hand, it is connected to the transmission device of the servo motor motion screw 5 to provide conditions for displacement closed-loop control. On the other hand, it is connected to the enable signal control in the welding control cabinet 8 to transmit auxiliary signals for the start and stop of the servo motor 7. The industrial computer 9 on the welding control cabinet 8 can adjust other welding parameters to achieve precise control. It can also control parameters such as welding current and forging time through the KingSCADA software, providing favorable process conditions for welding. Furthermore, the welding parameters can be changed according to the process, which is beneficial for welding control. The servo control panel can control the movement and displacement of the servo motor 7, providing favorable conditions for precise displacement control.

[0023] The chain link to be welded is placed through the welding ring inlet 10 and clamped by the chain link clamping devices 3 on both sides and the left and right electrodes 2. After clamping is completed, the PLC issues a welding command and welding begins. The welding control cabinet 8 provides the transformer control voltage, and the servo motor 7 starts to move precisely according to the preset path. At the same time, the welding control cabinet 8 provides different voltages at different stages for control. The servo motor 7 performs precise welding of the chain link through closed-loop control. The PLC in the welding control cabinet 8 controls the movement of the machine body 1 by controlling the valves on the equipment through the control program, and controls the welding voltage at different stages to complete the welding process.

[0024] In this embodiment, the electric servo motor controlled flash butt welding machine is used by starting the welding program, placing the chain links or chains to be welded, and clamping devices 3 on both sides of the chain links clamping them. The left and right electrodes 2 need to descend to clamp the chain links to be welded up, down, back, and forth. After clamping, the welding is started. The welding control cabinet 8 automatically adjusts the voltage according to different welding stages (preheating-flashing-top forging stages). The servo motor 7 starts simultaneously upon receiving the enable signal. According to the set data, the servo motor 7 controls the movement of the welding machine, thereby welding the chain links. In the preheating-flashing stage, the servo motor 7 performs motion transmission according to the set program, driving the transmission belt 6 to drive the moving screw for precise movement. The servo motor moving screw 5 drives the front top forging conveyor cylinder 4 to move the welding direction. The welding chain links are welded using a reciprocating motion. After the flashing process, the welding ring is forged using the forging conveyor cylinder 4. At this time, the forging conveyor cylinder 4 performs forging transport independently without driving the servo motor to move the lead screw 5. The powerful forging force can forge the welding chain links, squeezing out impurities and air generated during the welding process to form welding burrs. After the forging waiting time ends, the welding ring undergoes a deburring process. After deburring, all clamping devices return to their original positions, and the welding process ends. With the use of the servo motor 7, the welding process ensures precise feeding of the welding path, eliminating overshoot, lag, or uneven speed changes caused by the electro-hydraulic servo valve, which can lead to inaccurate stroke and welding problems. This ensures the normal operation of the equipment, guarantees the quality of the produced products, and makes the equipment less prone to damage.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric servo motor controlled flash butt welding machine, comprising a machine body (1) and a control cabinet (8), wherein an industrial control computer (9) is provided on the control cabinet (8), and the industrial control computer (9) is electrically connected to a servo control screen (11), characterized in that: A servo motor (7), a top-forging conveying cylinder (4), and a servo motor motion screw (5) are installed on one side of the machine body (1). The top-forging conveying cylinder (4) and the servo motor motion screw (5) are arranged below the servo motor (7). A transmission belt (6) is provided on the left side of the servo motor (7). One end of the servo motor motion screw (5) is connected to the transmission belt (6), and the other end is connected to the top-forging conveying cylinder (4). The bottom of the top forging conveying cylinder (4) is provided with a fixed base plate, which is welded to the machine body (1); The top of the body (1) is equipped with left and right electrodes (2), and a chain clamping device (3) is provided below the left and right electrodes (2). The chain clamping device (3) is installed on the body (1). There are two chain clamping devices (3). The two chain clamping devices (3) are installed symmetrically, and a welding ring inlet (10) is provided between the two chain clamping devices (3).

2. The electric servo motor controlled flash butt welding machine according to claim 1, characterized in that: The servo motor (7) is electrically connected to the control cabinet (8).

3. The electric servo motor controlled flash butt welding machine according to claim 2, characterized in that: The servo motor motion screw (5) is connected to a connecting frame, which is welded to one side of the machine body (1). The servo motor motion screw (5) is fixed to one side of the machine body (1) via the connecting frame and the top forging conveying cylinder (4).

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