Pipe cutting machine

Abstract

The utility model discloses a pipe cutting machine which comprises a control system, a machine table, a rotating large disc rotationally installed on the machine table, a feed mechanism, a servo motor and a copper ring installed on the other side of the rotating large disc, the feed mechanism and the servo motor are installed on one side of the rotating large disc, the servo motor is in transmission connection with the feed mechanism, and the control system is in control connection with the servo motor. The internal electric control box is fixedly mounted on the rotating large disc, the programmable controller, the wireless communication module receiving end and the servo controller are mounted in the internal electric control box, the wireless communication module transmitting end and the man-machine interaction interface are mounted on the machine table, and the wireless communication module receiving end is connected with the programmable controller through a network cable; the servo controller is in communication connection with the programmable controller, and a power line and a coding line are connected between the servo controller and the servo motor; the wireless communication module transmitting end is in wireless communication connection with the wireless communication module receiving end; and the man-machine interaction interface is connected with the transmitting end of the wireless communication module through a network cable.

Description

Technical Field

[0001] This application relates to the field of pipe production equipment technology, and in particular to a pipe cutting machine. Background Technology

[0002] In the traditional production process, the cutting machine consists of components such as the machine base, copper ring, rotating disc, feed mechanism, and servo motor. The feed mechanism is controlled by the servo motor, which can control and provide feedback on the feed position in real time with precision. Since the feed mechanism needs to make radial circumferential motion around the pipe to cut the pipe, the disc rotates around the pipe during the cutting process. External power supplies power and control the servo motor on the rotating disc via copper rings. The servo motor's power and encoder wires are connected to the servo controller via the copper rings. Due to the influence of machining precision and the external environment, the pulse signal control of the servo motor is easily affected during the rotation of the rotating disc, resulting in inaccurate control precision and affecting the feed position of the feed mechanism. In severe interference, the pulse signal may even fail to reach the servo motor of the feed mechanism through the copper rings, causing the cutting action to fail. In addition, the copper rings also carry the servo motor's power supply wires, and the servo motor generates significant electromagnetic interference during startup, causing pulse loss and resulting in inaccurate position control. The transmission of pulse signals between the servo motor and the servo controller requires five wires, hence the need for five copper rings. For larger cutting machines, the cost of five copper rings is quite high, increasing the overall cost of the equipment. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a pipe cutting machine.

[0004] To achieve the above objectives, this application adopts the following technical solution: a pipe cutting machine, comprising a control system, a machine base, a rotating disc rotatably mounted on the machine base, a feed mechanism and a servo motor mounted on one side of the rotating disc, and a copper ring mounted on the other side of the rotating disc. The rotating disc has a through hole at its center for the pipe to pass through. The servo motor is drive-connected to the feed mechanism, and the control system is control-connected to the servo motor. The control system includes:

[0005] The internal electrical control box is fixedly installed on the rotating disk and is located on the same side of the rotating disk as the servo motor.

[0006] The programmable controller is installed inside the internal electrical control box.

[0007] The wireless communication module receiver is installed inside the internal electrical control box and is connected to the programmable controller via a network cable.

[0008] A servo controller is installed inside the internal electrical control box. The servo controller is communicatively connected to the programmable controller. A power line and an encoder line are connected between the servo controller and the servo motor.

[0009] A wireless communication module transmitter is mounted on the machine base, and a wireless communication connection is established between the wireless communication module transmitter and the wireless communication module receiver; and

[0010] The human-computer interaction interface is installed on the machine platform and connected to the wireless communication module transmitter via a network cable.

[0011] In the above technical solution, it is further preferred that the programmable controller is connected to the servo controller via the Canlink communication protocol.

[0012] In the above technical solution, a further preferred embodiment is that the internal electrical control box is provided with a through hole for the power cord and the coding line to pass through.

[0013] In the above technical solution, it is further preferred that the copper ring is electrically connected to the programmable controller, the wireless communication module receiver, and the servo controller respectively.

[0014] In the above technical solution, it is further preferred that the human-computer interaction interface is a touch screen or a button screen.

[0015] Compared with the prior art, this application achieves the following beneficial effects:

[0016] This application replaces the original pulse control method with wireless communication and Canlink communication, which can accurately control the feed position of the feed mechanism and provide real-time feedback on the current position of the feed mechanism, making it less susceptible to the influence of machining accuracy and external environment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a pipe cutting machine provided in an embodiment of this application.

[0018] The components include: 1. Machine base; 2. Rotating disc; 3. Feed mechanism; 4. Servo motor; 5. Copper ring; 6. Internal electrical control box; 7. Programmable controller; 8. Wireless communication module receiver; 9. Servo controller; 10. Wireless communication module transmitter; 11. Human-machine interface. Detailed Implementation

[0019] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0020] This application provides a pipe cutting machine for cutting pipes according to production requirements. Figure 1 As shown, the pipe cutting machine includes a machine base 1, a rotating disc 2, a cutting mechanism 3, a servo motor 4, a copper ring 5, and a control system. The machine base 1 is supported on the ground. The rotating disc 2 is rotatably mounted on the machine base 1 about a longitudinally extending axis. A through hole for pipes to pass through is opened at the center of the rotating disc 2. The cutting mechanism 3 and the servo motor 4 are mounted on the same side of the rotating disc 2, both located outside the through hole. The cutting mechanism 3 includes a blade for cutting the pipe. The servo motor 4 is driven by the blade to move the blade radially back and forth within the through hole. Moving the blade closer to the center of the through hole is called cutting, and moving it away from the center is called retraction. The servo motor 4 drives the blade to cut the pipe at the through hole as the rotating disc 2 rotates about its axis, and then drives the blade to retract after cutting to await the next cutting. The copper ring 5 is mounted on the other side of the rotating disc 2 and is used to transmit external power to the rotating disc 2. The control system is connected to the servo motor 4. The control system precisely controls the feed rate and feed speed of the blade through the servo motor 4, thereby improving cutting efficiency and cutting accuracy.

[0021] Continue to refer to Figure 1 The control system includes an internal electrical control box 6, a programmable logic controller (PLC) 7, a wireless communication module receiver 8, a servo controller 9, a wireless communication module transmitter 10, and a human-machine interface 11. The internal electrical control box 6 is fixedly mounted on the rotating disc 2, and is installed on the same side of the rotating disc 2 as the servo motor 4. The PLC 7, wireless communication module receiver 8, and servo controller 9 are all installed inside the internal electrical control box 6. When the cutting mechanism 3 of the internal electrical control box 6 is cutting, it protects the PLC 7, wireless communication module receiver 8, and servo controller 9, preventing damage to these components from cutting debris. The wireless communication module transmitter 10 and the human-machine interface 11 are mounted on the machine base 1.

[0022] The programmable controller 7 is connected to the wireless communication module receiver 8 and the servo controller 9 respectively. The wireless communication module receiver 8 and the wireless communication module transmitter 10 have a long-distance wireless communication connection. The wireless communication module transmitter 10 is connected to the human-machine interface 11. The servo controller 9 is connected to the servo motor 4.

[0023] The programmable logic controller (PLC) 7 is connected to the wireless communication module receiver 8 via a network cable, and the wireless communication module transmitter 10 is connected to the human-machine interface (HMI) 11 via a network cable. The PLC 7 communicates with the HMI 11 through the wireless communication module receiver 8 and transmitter 10. The HMI 11 is a touchscreen or a keypad screen. Operators can input parameters, instructions, and programming data to the PLC 7 through the HMI 11. The PLC 7 feeds back operating parameters to the HMI 11, and the HMI 11 displays the current operating parameters of the pipe cutting machine, allowing operators to adjust the machine promptly and improve work efficiency. The PLC 7, wireless communication module receiver 8, wireless communication module transmitter 10, and HMI 11 are all on the same network segment.

[0024] The programmable controller 7 is connected to the servo controller 9 via the Canlink communication protocol. The Canlink communication method replaces the pulse control method. The control commands transmitted by the programmable controller 7 and the feedback signals transmitted by the servo controller 9 are transmitted quickly and accurately through the Canlink communication protocol, effectively avoiding pulse loss caused by the influence of machining accuracy and external environment.

[0025] Servo motor 4 and servo controller 9 are connected via power and encoder cables. Servo controller 9 supplies power to servo motor 4 via the power cable and receives encoder signals from servo motor 4 via the encoder cable. Based on instructions from programmable controller 7, servo controller 9 controls servo motor 4 to drive feed mechanism 3 for feed and retraction. Both servo controller 9 and servo motor 4 are located on the rotating disk 2 and are directly connected via encoder and power cables to avoid signal interference and loss, ensuring precise control of the feed position. The internal electrical control box 6 has through holes for the power and encoder cables to pass through, ensuring the connection between servo controller 9 and servo motor 4.

[0026] The copper ring 5 is electrically connected to the programmable controller 7, the wireless communication module receiver 8, and the servo controller 9, respectively, and is used to supply power to the programmable controller 7, the wireless communication module receiver 8, and the servo controller 9, but does not participate in signal transmission.

[0027] This application replaces the original pulse control method with wireless communication and Canlink communication, which can accurately control the feed position of the feed mechanism and provide real-time feedback on the current position of the feed mechanism, making it less susceptible to the influence of machining accuracy and external environment.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A pipe cutting machine, comprising a control system, a machine base, a rotating disc rotatably mounted on the machine base, a feed mechanism and a servo motor mounted on one side of the rotating disc, and a copper ring mounted on the other side of the rotating disc, wherein the rotating disc has a through hole at its center for pipes to pass through, the servo motor is drively connected to the feed mechanism, and the control system is controllably connected to the servo motor, characterized in that... The control system includes: The internal electrical control box is fixedly installed on the rotating disk and is located on the same side of the rotating disk as the servo motor. The programmable controller is installed inside the internal electrical control box. The wireless communication module receiver is installed inside the internal electrical control box and is connected to the programmable controller via a network cable. A servo controller is installed inside the internal electrical control box. The servo controller is communicatively connected to the programmable controller. A power line and an encoder line are connected between the servo controller and the servo motor. A wireless communication module transmitter is mounted on the machine base, and a wireless communication connection is established between the wireless communication module transmitter and the wireless communication module receiver; and The human-computer interaction interface is installed on the machine platform and connected to the wireless communication module transmitter via a network cable.

2. The pipe cutting machine according to claim 1, characterized in that, The programmable controller is connected to the servo controller via the Canlink communication protocol.

3. The pipe cutting machine according to claim 1, characterized in that, The internal electrical control box is provided with a through hole for the power cord and the coding line to pass through.

4. The pipe cutting machine according to claim 1, characterized in that, The copper ring is electrically connected to the programmable controller, the wireless communication module receiver, and the servo controller, respectively.

5. The pipe cutting machine according to claim 1, characterized in that, The human-computer interaction interface is a touch screen or a button screen.

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