Saw cutting table control device

Abstract

The utility model relates to a control device for a sawing table. Comprising a feeding rack input roller way, a feeding rack shifting fork, a chain, a feeding rack output roller way, a sawing machine, a discharging table input roller way, a discharging rack shifting fork, a discharging rack output roller way, a shifting fork driving motor, a roller way driving motor, a touch screen, a PLC control system, a switch, a feeding table shifting fork frequency converter, a discharging table shifting fork frequency converter and an encoder. The feeding table shifting fork frequency converter and the discharging table shifting fork frequency converter are used for driving the shifting fork driving motor, the encoder is arranged at the tail of the shifting fork driving motor, the automatic control process of shifting fork movement of the feeding table and the discharging table is achieved through accurate positioning of the encoder and the PLC control system, the shifting forks accurately move in place in the shifting process, and the shifting forks are accurately controlled to move in place. According to the automatic material taking and feeding device, material taking and feeding are conducted accurately, production automation is achieved, production continuity and stability are guaranteed under the conditions of special processes and automatic faults, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling equipment, in particular to a sawing table control device. Background Art

[0002] The sawing table equipment is an indispensable part of the entire steel rolling mill. The sawing table equipment includes loading table, unloading table, roller table, shift fork, sawing machine and other equipment. Especially in the fixed-length sawing in the finishing workshop, the crane will lift the steel sections to be sawed to the loading end of the sawing table, and drive the steel sections to run to the sawing roller table through roller tables, chains and other equipment. After sawing, the sawn steel sections are output through the unloading table output roller table, and moved to the discharging roller table to prepare for processing in the next process.

[0003] The above working process has the following defects:

[0004] (1) The movement of the shift forks of the loading and unloading platforms depends on the operator's visual judgment, which often results in inaccurate judgments, that is, the shift forks either do not move forward to the correct position or move too far. The operator needs to repeatedly adjust the position of the shift forks, especially when working at night, where visibility is poor and adjusting the position of the shift forks becomes more difficult, which seriously restricts the continuity of production.

[0005] (2) When the shift fork moves the steel section, when it is about to reach the position, it is necessary to stop the motor in advance and rely on inertia to slow down the movement. This is also a manual judgment based on vision. If it stops too early, it will need a second manual jog operation to slowly move the material to the specified position. If it stops too late, the inertia movement will cause impact on the equipment and the surface of the steel section. This control mode not only affects the rhythm of production, but also cannot guarantee the surface quality of the steel section. Summary of the invention

[0006] The utility model provides a sawing material table control device, which realizes the automatic control process of the shift fork movement of the loading table and the unloading table. The shift fork moves accurately into place during the material shifting process to accurately pick up and feed the materials, thus solving the problems of production stagnation and surface quality of finished materials caused by poor vision or excessive impact force.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A sawing table control device, including a loading table input roller, a loading table shift fork, a chain, a loading table output roller, a sawing machine, a unloading table input roller, an unloading table shift fork, an unloading table output roller, a shift fork drive motor, a roller drive motor, a touch screen, a PLC control system, a switch, a loading table shift fork inverter, an unloading table shift fork inverter and an encoder;

[0009] The input roller of the loading platform is arranged in parallel with the output roller of the loading platform, a chain is arranged between the input roller of the loading platform and the output roller of the loading platform, and a loading platform shift fork is arranged on the corresponding chain;

[0010] The unloading platform input roller is arranged in parallel with the unloading platform output roller, a chain is arranged between the unloading platform input roller and the unloading platform output roller, and a unloading platform shift fork is arranged on the corresponding chain;

[0011] The output roller of the loading platform is arranged at the front end of the input roller of the unloading platform, the output roller of the loading platform and the input roller of the unloading platform are arranged on the same straight line, the input roller of the loading platform is arranged at the front end of the output roller of the unloading platform, the input roller of the loading platform and the output roller of the unloading platform are arranged on the same straight line, and a sawing machine is arranged between the output roller of the loading platform and the input roller of the unloading platform;

[0012] An encoder is arranged at the tail of the fork driving motor, the loading platform fork inverter, the unloading platform fork inverter and the touch screen are connected to the switch through a communication cable, the switch is connected to the PLC control system through a communication cable, and the encoder signal line is connected to the PLC control system.

[0013] Furthermore, the encoder includes a loading fork encoder and a unloading fork encoder, and both the loading fork encoder and the unloading fork encoder are incremental encoders.

[0014] Furthermore, the fork driving motor includes a loading fork driving motor and a unloading fork driving motor, a loading fork encoder is arranged at the tail of the loading fork driving motor, and a unloading fork encoder is arranged at the tail of the unloading fork driving motor.

[0015] Furthermore, it also includes a frequency-sensitive resistor, an automatic mode button, a manual mode button, an automatic start button, a manual forward button and a manual reverse button, the frequency-sensitive resistor is connected in series with the stator winding of the fork drive motor, and the automatic mode button, manual mode button, automatic start button, manual forward button and manual reverse button are connected to the input terminals of the PLC control system.

[0016] Furthermore, it also includes a fixed-length baffle, which is a movable baffle and is arranged between the input rollers of the unloading platform.

[0017] Furthermore, the switch is an industrial switch with more than 5 Ethernet ports.

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

[0019] 1) The fork drive motor is driven by the fork inverter of the loading platform and the fork inverter of the unloading platform, and an encoder is set at the tail of the fork drive motor. The automatic control process of the fork movement of the loading platform and the unloading platform is realized through the precise positioning of the encoder and the PLC control system. The fork moves accurately in place during the material shifting process to accurately pick up and feed the materials;

[0020] 2) The automation of production is achieved through the selection of manual mode and automatic mode buttons of the loading and unloading forks, ensuring the continuity and stability of production in the case of special processes and automatic failures. The manual and automatic coordination operation of the loading and unloading forks solves the problem of production stagnation caused by poor vision or excessive impact force and the surface quality problem of finished materials caused by large inertia;

[0021] 3) At the same time, it also greatly improves the production efficiency and has a good practical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the sawing and cutting table of the utility model.

[0023] Figure 2 It is a schematic diagram of the communication network structure of the switch of the utility model.

[0024] Figure 3 It is a wiring diagram of the PLC control system of the utility model.

[0025] Figure 4 It is a wiring diagram of the shift fork drive motor of the utility model.

[0026] In the figure: 1. Loading platform input roller 2. Loading platform fork 3. Chain 4. Loading platform output roller 5. Sawing machine 6. Unloading platform input roller 7. Unloading platform fork 8. Unloading platform output roller 9. Loading fork drive motor 10. Unloading fork drive motor DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0028] The utility model discloses a sawing table control device, comprising a loading table input roller 1, a loading table shift fork 2, a chain 3, a loading table output roller 4, a sawing machine 5, a discharging table input roller 6, a discharging table shift fork 7, a discharging table output roller 8, a shift fork drive motor M, a roller drive motor, a touch screen, a PLC control system, an industrial switch, a loading table shift fork inverter, a discharging table shift fork inverter, an encoder, a fixed-length baffle, a frequency-sensitive resistor RF, an automatic mode button, a manual mode button, an automatic start button, a manual forward button and a manual backward button, the shift fork drive motor comprises a loading fork drive motor 9 and a discharging fork drive motor 10, and the encoder comprises a loading fork encoder and a discharging fork encoder;

[0029] See Figure 1 , is a structural schematic diagram of the sawing platform of the utility model, wherein the feeding platform input roller 1 and the feeding platform output roller 4 are arranged in parallel, and a chain 3 is arranged between the feeding platform input roller 1 and the feeding platform output roller 4, and a feeding platform shift fork 2 is arranged on the corresponding chain 3;

[0030] The unloading platform input roller 6 is arranged in parallel with the unloading platform output roller 8, and a chain 3 is arranged between the unloading platform input roller 6 and the unloading platform output roller 8, and a unloading platform shift fork 7 is arranged on the corresponding chain 3;

[0031] The feeding platform output roller 4 and the unloading platform input roller 6 are arranged on the same straight line, the feeding platform input roller 1 and the unloading platform output roller 8 are arranged on the same straight line, a sawing machine 5 is arranged between the feeding platform output roller 4 and the unloading platform input roller 6, and the fixed-length baffle is a movable baffle, which is arranged between the unloading platform input roller 6;

[0032] The tail of the feeding fork driving motor 9 is provided with a feeding fork encoder, and the tail of the unloading fork driving motor 10 is provided with an unloading fork encoder; Figure 2 The loading platform fork inverter, the unloading platform fork inverter and the touch screen are connected to the industrial switch via a communication cable using the Profinet communication protocol, and the industrial switch is connected to the PLC control system via a communication cable using the Profinet communication protocol;

[0033] See Figure 3The PLC control system includes a CPU and a digital input module DI. The CPU adopts a 6ES7214-1AG40-0XB0 model CPU. The loading fork encoder adopts an incremental encoder, and the unloading fork encoder adopts an absolute encoder. The loading fork encoder signal lines A, B, and Z are connected to I0.0, I0.1, and I0.3 of the CPU, and the unloading fork encoder signal lines A, B, and Z are connected to I0.4, I0.5, and I0.7 of the CPU. The loading platform fork 2 corresponds to The automatic mode button SB1, manual mode button SB2, automatic start button SB3, manual forward button SB4 and manual reverse button SB5 are connected to I1.0, I1.1, I1.2, I1.3 and I1.4 of the CPU, and the automatic mode button SB6, manual mode button SB7, automatic start button SB8, manual forward button SB9 and manual reverse button SB10 corresponding to the unloading platform fork 7 are connected to I1.0, I1.1, I1.2, I1.3 and I1.4 of the digital input module DI.

[0034] See Figure 4 The input end of the shift fork driving motor is connected in series with a thermal relay FR, and the thermal relay FR is connected to the motor forward and reverse through AC contactors KM1 and KM2. The stator winding of the shift fork driving motor M is connected in series with a frequency-sensitive resistor RF.

[0035] Working principle: Set the zero point position of the loading platform fork 2, and start calibrating the incremental encoder at the tail of the loading fork drive motor 9 according to the stroke of the entire loading platform. Use the same process to calibrate the incremental encoder of the unloading platform fork 7.

[0036] 1. The loading platform fork 2 can be operated in automatic mode or manual mode by corresponding automatic mode button SB1 and manual mode button SB2:

[0037] (1) Automatic operation

[0038] After the automatic mode button SB1 is pressed, the shift fork starts to move forward. When the shift fork moves forward to the right position, after a delay of 2s, the shift fork starts to move backward, and the material on the material table starts to move toward the sawing machine 5, and then moves backward. Before reaching the backward deceleration point, the shift fork motor runs at a high speed. When reaching the backward deceleration point, the shift fork starts to run at a low speed and slowly approaches the target position. When it approaches the target position, the shift fork motor stops and the whole cycle ends.

[0039] (2) Manual operation

[0040] The operator can manually control the forward and backward movements of the fork through the manual forward button SB4 and the manual reverse button SB5 of the loading platform fork 2 on the operating table. Manual operation can be used as a second choice for normal production when an abnormality occurs in the automatic operation.

[0041] 2. Sawing:

[0042] When the shift fork pushes the material on the loading platform onto the sawing roller, the operator controls the roller drive motor to drive the sawing roller forward and backward, cooperates with the fixed-length baffle, manually moves the position of the fixed-length baffle according to the required sawing length, saws the material and transports it to the bottom of the sawing machine 5, completing the sawing action.

[0043] 3. The action of the unloading platform fork 7 can be selected through the corresponding automatic mode button SB6 and manual mode button SB7 to select automatic mode or manual mode operation:

[0044] (1) Automatic operation

[0045] After the automatic mode button SB6 is pressed, the shift fork starts to move forward, pushing the sawed material onto the lower material roller. When the shift fork moves forward to the forward deceleration point but not to the forward deceleration point, the shift fork motor runs at high speed. After reaching the forward deceleration point, the shift fork starts to run at low speed and slowly approaches the target position. After approaching the target position, the shift fork motor stops. After a delay of 2s, the shift fork motor starts to automatically move backward and moves backward to the backward target position at high speed. The shift fork motor stops, and the whole cycle ends.

[0046] (3) Manual operation

[0047] The operator can manually control the forward and backward movements of the fork through the manual forward button SB9 and the manual reverse button SB10 of the unloading platform fork 7 on the operating table. Manual operation can be used as a second choice for normal production when an abnormality occurs in the automatic operation.

[0048] The above embodiments are implemented based on the technical solution of the utility model, and detailed implementation methods and specific operation processes are given, but the protection scope of the utility model is not limited to the above embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims

1. A sawing table control device, characterized in that: Including the loading platform input roller, loading platform shift fork, chain, loading platform output roller, sawing machine, unloading platform input roller, unloading platform shift fork, unloading platform output roller, shift fork drive motor, roller drive motor, touch screen, PLC control system, switch, loading platform shift fork inverter, unloading platform shift fork inverter and encoder; The input roller of the loading platform is arranged in parallel with the output roller of the loading platform, a chain is arranged between the input roller of the loading platform and the output roller of the loading platform, and a loading platform shift fork is arranged on the corresponding chain; The unloading platform input roller is arranged in parallel with the unloading platform output roller, a chain is arranged between the unloading platform input roller and the unloading platform output roller, and a unloading platform shift fork is arranged on the corresponding chain; The output roller of the loading platform is arranged at the front end of the input roller of the unloading platform, the output roller of the loading platform and the input roller of the unloading platform are arranged on the same straight line, the input roller of the loading platform is arranged at the front end of the output roller of the unloading platform, the input roller of the loading platform and the output roller of the unloading platform are arranged on the same straight line, and a sawing machine is arranged between the output roller of the loading platform and the input roller of the unloading platform; An encoder is arranged at the tail of the fork driving motor, the loading platform fork inverter, the unloading platform fork inverter and the touch screen are connected to the switch through a communication cable, the switch is connected to the PLC control system through a communication cable, and the encoder signal line is connected to the PLC control system.

2. A sawing table control device according to claim 1, characterized in that: The encoder comprises a loading fork encoder and a unloading fork encoder, and both the loading fork encoder and the unloading fork encoder are incremental encoders.

3. A sawing table control device according to claim 2, characterized in that: The fork drive motor comprises a loading fork drive motor and a unloading fork drive motor. A loading fork encoder is arranged at the tail of the loading fork drive motor, and a unloading fork encoder is arranged at the tail of the unloading fork drive motor.

4. A sawing table control device according to claim 1, characterized in that: It also includes a frequency-sensitive resistor, an automatic mode button, a manual mode button, an automatic start button, a manual forward button and a manual reverse button. The frequency-sensitive resistor is connected in series with the stator winding of the shift fork drive motor, and the automatic mode button, manual mode button, automatic start button, manual forward button and manual reverse button are connected to the input terminals of the PLC control system.

5. The sawing table control device according to claim 1, characterized in that: It also includes a fixed-length baffle, which is a movable baffle and is arranged between the input rollers of the unloading platform.

6. A sawing table control device according to claim 1, characterized in that: The switch is an industrial switch with more than 5 Ethernet ports.

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