Outlet roller way control device
By installing a tension sensor and a PLC controller in the exit roller conveyor control device to control the motor start and stop, the problem of emulsion residue caused by the high-speed rotation of the exit roller conveyor was solved, thus improving the finished product quality of aluminum coils.
Patent Information
- Application Number
- CN202423041724.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-10
AI Technical Summary
During the aluminum coil rolling process, the high-speed rotation of the exit rollers causes emulsion residue to be thrown onto the lower surface of the billet, forming emulsion spots and affecting the quality of the finished product.
A tension sensor is installed in the exit roller control device, and the motor is started and stopped by a PLC controller and control circuit to ensure that the exit roller is passively rotated during the upper winding pass, thus preventing the emulsion from being thrown out.
This effectively avoids the formation of emulsion spots and improves the finished product quality of aluminum coils.
Smart Images
Figure CN223543723U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum coil manufacturing technology, specifically to an outlet roller conveyor control device. Background Technology
[0002] In aluminum coil rolling, emulsions are required for lubrication. An emulsion is a milky-white liquid formed by the interaction of oil and water with an emulsifier. During rolling, the emulsion is sprayed onto the surface of the rollers through spray pipes. The emulsion reduces friction between the rollers and the aluminum material, lowers rolling force, reduces roller wear, prevents metal adhesion, and thus improves the surface quality of the finished product. During coil rolling, the inlet and outlet rollers, the centering rollers, and the working rollers rotate with the main machine. Under high-speed rotation, emulsion residue and oil contaminants on the roller surface are flung onto the lower surface of the billet, forming emulsion spots. After cold rolling, some of these defects cannot be eliminated, affecting the quality of the finished product.
[0003] Therefore, there is an urgent need for an exit roller conveyor control device that can stop the motor of the exit roller conveyor during the upper winding cycle. Summary of the Invention
[0004] This invention provides an outlet roller control device to solve the problem of emulsion residue on the lower surface of aluminum coils due to the high-speed rotation of the rollers during the upper winding stage. A tension sensor is installed on the tension roller, and the output of the tension sensor is connected to a PLC controller. During the upper winding stage, the tension roller presses down to establish tension, and the tension sensor provides a stop signal to the PLC controller. The PLC controller then controls the motor to stop through the control circuit, thereby changing the outlet roller from active rotation to passive rotation.
[0005] To achieve the above objectives, this utility model proposes an exit roller conveyor control device, including a control cabinet, a PLC controller, a motor, a roller conveyor, and a winding machine. A tension roller is installed on the winding machine and is located on one side of the roller conveyor. A rolling mill is located in the middle of the roller conveyor, which includes an exit roller. The PLC controller is electrically connected to the motor, and the output shaft of the motor is connected to the exit roller. A tension sensor is installed on the tension roller, and the output terminal of the tension sensor is connected to the input terminal of the PLC controller. A control circuit is provided between the motor and the PLC controller. The PLC controller and the control circuit are located inside the control cabinet. An indicator light is installed on the control cabinet and is electrically connected to the control circuit.
[0006] Furthermore, the control circuit includes a primary circuit and a secondary circuit. The primary circuit includes a circuit breaker, a thermal relay, and a contactor. The circuit breaker is connected to a three-phase power supply via the thermal relay. The other end of the circuit breaker is connected to the normally open contact of the contactor. The other end of the normally open contact of the contactor is connected to the secondary circuit. The motor is connected to the power supply through the secondary circuit.
[0007] Furthermore, the secondary circuit includes a frequency converter and a relay. The coil of the relay is connected to the PLC controller, the normally open contact of the relay is connected to the coil of the contactor, the normally open contact of the contactor is connected to the frequency converter, and the other end of the frequency converter is connected to the motor.
[0008] Setting up primary and secondary circuits enables multiple controls for the motor, improving the safety of electrical equipment.
[0009] Furthermore, the relay includes an intermediate relay, which includes multiple normally open contacts and multiple normally closed contacts. The indicator light includes a red light and a green light, with the red light connected to a normally closed contact of the intermediate relay and the green light connected to a normally open contact of the intermediate relay.
[0010] Indicator lights are installed to help staff identify the equipment status.
[0011] Furthermore, the control cabinet has a square cabinet structure, a hinged door, and ventilation holes on the side.
[0012] The control cabinet protects the control circuit and PLC controller, facilitates operation by staff, and has ventilation holes to meet the equipment's operational needs.
[0013] The beneficial effects of this utility model through the above technical solution are as follows:
[0014] This invention effectively solves the problem of emulsion residue and oil stains being thrown onto the lower surface of the billet during the rolling process, forming emulsion spots. The PLC controller controls the motor's start and stop via a control circuit. During the upper winding pass, the aluminum sheet is wound into an aluminum coil. At this time, the tension roller presses down on the aluminum sheet, and one end of the sheet is gripped by the upper winding machine, thus creating tension on the tension roller. The tension sensor outputs a signal, which the PLC controller receives. The PLC controller then controls the motor to stop via the control circuit. After the motor stops, the exit roller automatically stops rotating, preventing the emulsion adhering to the exit roller from being thrown onto the lower surface of the billet due to centrifugal force, thereby avoiding emulsion spots and improving the quality of the aluminum coil. Attached Figure Description
[0015] Figure 1 This is one of the electrical schematic diagrams of an outlet roller conveyor control device according to this utility model;
[0016] Figure 2 This is the second electrical schematic diagram of an outlet roller conveyor control device according to this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of an outlet roller conveyor control device according to the present invention.
[0018] The attached diagrams are numbered as follows: 1 is the control cabinet, 2 is the PLC controller, 3 is the motor, 4 is the outlet roller, 5 is the winding machine, 6 is the tension roller, 7 is the tension sensor, 8 is the indicator light, 9 is the circuit breaker, 10 is the thermal relay, 11 is the contactor, 13 is the frequency converter, and 14 is the relay. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0020] Example 1
[0021] like Figures 1-3 As shown, an exit roller conveyor control device includes a control cabinet 1, a PLC controller 2, a motor 3, a roller conveyor, and a winding machine 5. A tension roller 6 is installed on the winding machine 5 and is located on one side of the roller conveyor. A rolling mill is located in the middle of the roller conveyor, which includes an exit roller 4. The PLC controller 2 is electrically connected to the motor 3, and the output shaft of the motor 3 is connected to the exit roller 4. A tension sensor 7 is installed on the tension roller 6, and the output terminal of the tension sensor 7 is connected to the input terminal of the PLC controller 2. A control circuit is provided between the motor 3 and the PLC controller 2. The PLC controller 2 and the control circuit are located inside the control cabinet 1. An indicator light 8 is installed on the control cabinet 1, and the indicator light 8 is electrically connected to the control circuit.
[0022] The control circuit includes a primary circuit and a secondary circuit. The primary circuit includes a circuit breaker 9, a thermal relay 10, and a contactor 11. The circuit breaker 9 is connected to a three-phase power supply via the thermal relay 10. The other end of the circuit breaker 9 is connected to the normally open contact of the contactor 11. The other end of the normally open contact of the contactor 11 is connected to the secondary circuit. The motor 3 is connected to the power supply through the secondary circuit.
[0023] The secondary circuit includes a frequency converter 13 and a relay 14. The coil of the relay 14 is connected to the PLC controller 2, the normally open contact of the relay 14 is connected to the coil of the contactor 11, the normally open contact of the contactor 11 is connected to the frequency converter 13, and the other end of the frequency converter 13 is connected to the motor 3.
[0024] The relay 14 includes an intermediate relay, which includes multiple normally open contacts and multiple normally closed contacts. The indicator light 8 includes a red light and a green light. The red light is connected to a normally closed contact of the intermediate relay, and the green light is connected to a normally open contact of the intermediate relay.
[0025] The control cabinet 1 has a square cabinet structure, and the control cabinet 1 is hinged with a cabinet door. The control cabinet 1 has heat dissipation holes on its side.
[0026] In this embodiment, the frequency converter 13 and the PLC controller 2 are connected in communication.
[0027] During operation, PLC controller 2 energizes the coil of relay 14, closing the normally open contact of relay 14. This, in turn, energizes the coil of circuit breaker 9, causing the green light to illuminate. The primary circuit containing frequency converter 9 and motor 3 is energized, causing motor 3 to rotate. Motor 3 drives the roller conveyor and exit roller 4 to rotate, and the roller conveyor moves the aluminum plate to complete the rolling process. PLC controller 2 sets the number of rolling cycles. During the coiling process, tension roller 6 presses the aluminum plate upwards, and one end of the aluminum plate is gripped by the coiler. The coiler rotates and coils the aluminum plate. Tension sensor 7 senses the tension and outputs an analog signal to PLC controller 2. PLC controller 2 de-energizes the coil of relay 14, causing the normally open contact of relay 14 to open and the normally closed contact to reset. The red light illuminates, and simultaneously, the coil of circuit breaker 9 is de-energized, causing motor 3 to stop rotating. Exit roller 4 stops rotating, and the centrifugal force on exit roller 4 disappears. The emulsion adheres to the surface of exit roller 4 and is not thrown to the lower end of the aluminum plate due to centripetal force.
[0028] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.
Claims
1. An exit roller conveyor control device, comprising a control cabinet (1), a PLC controller (2), a motor (3), a roller conveyor and a winding machine (5), wherein a tension roller (6) is provided on the winding machine (5), the tension roller (6) is provided on one side of the roller conveyor, a rolling mill is provided in the middle of the roller conveyor, the roller conveyor includes an exit roller (4), the PLC controller (2) is electrically connected to the motor (3), and the output shaft of the motor (3) is connected to the exit roller (4), characterized in that, The tension roller (6) is equipped with a tension sensor (7), and the output end of the tension sensor (7) is connected to the input end of the PLC controller (2); a control circuit is provided between the motor (3) and the PLC controller (2), the PLC controller (2) and the control circuit are located inside the control cabinet (1), and an indicator light (8) is provided on the control cabinet (1), and the indicator light (8) is electrically connected to the control circuit.
2. The outlet roller conveyor control device according to claim 1, characterized in that, The control circuit includes a primary circuit and a secondary circuit. The primary circuit includes a circuit breaker (9), a thermal relay (10), and a contactor (11). The circuit breaker (9) is connected to a three-phase power supply. The other end of the circuit breaker (9) is connected to the normally open contact of the contactor (11). The other end of the normally open contact of the contactor (11) is connected to the secondary circuit. The motor (3) is connected to the power supply through the secondary circuit.
3. The outlet roller conveyor control device according to claim 2, characterized in that, The secondary circuit includes a frequency converter (13) and a relay (14). The coil of the relay (14) is connected to the PLC controller (2), the normally open contact of the relay (14) is connected to the coil of the contactor (11), the normally open contact of the contactor (11) is connected to the frequency converter (13), and the other end of the frequency converter (13) is connected to the motor (3).
4. The outlet roller conveyor control device according to claim 3, characterized in that, The relay (14) includes an intermediate relay, which includes multiple normally open contacts and multiple normally closed contacts. The indicator light (8) includes a red light and a green light. The red light is connected to a normally closed contact of the intermediate relay, and the green light is connected to a normally open contact of the intermediate relay.
5. The outlet roller conveyor control device according to claim 1, characterized in that, The control cabinet (1) is a square cabinet structure. The control cabinet (1) is hinged with a cabinet door and has heat dissipation holes on its side.