Control system for remotely adjusting tensile force of adhesive tape

Abstract

The utility model provides a control system for remotely adjusting tensile force of an adhesive tape. The control system comprises a field control unit, a network transmission unit and a remote control unit. According to the utility model, the shutdown of the sealing-tape machine caused by too small or too large tension value can be eliminated, the automatic adjustment of the tension force of the sealing-tape machine is realized, the frequent starting caused by large change of the tension value of the sealing-tape machine is reduced, and the working efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic control and relates to a control system for remotely adjusting the tension of an adhesive tape. Background Art

[0002] Existing belt systems usually use contactors to control the forward and reverse rotation of the tensioning winch to achieve belt tension control by tightening or loosening. However, when the temperature difference between day and night is large in the place where the above-mentioned belt system is used, there is a certain difference in the tension value of the belt machine during the day and at night. The temperature is higher during the day, and the belt tends to become loose. The temperature is lower at night, and the belt becomes tighter. Therefore, the belt will run normally during the daytime test, but when the normal production is started in the evening, the belt tension value changes greatly, causing frequent startup failures, which seriously affects the production operation of the belt system and reduces labor efficiency. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the prior art and provide a control system for remotely adjusting the tension of the tape, which solves the problem that when the temperature difference between day and night is large, the tension value of the existing tape machine changes greatly, frequently causing startup failures and seriously affecting the production and operation of the tape.

[0004] To this end, the present invention adopts the following technical solutions:

[0005] A control system for remotely adjusting the tension of an adhesive tape, comprising a field control unit, a network transmission unit and a remote control unit;

[0006] The field control unit includes a temperature sensor, a tension sensor, a tensioning wire rope, a tensioning PLC controller, a frequency converter, a tensioning winch, and a belt conveyor; the tension sensor is installed on the tensioning wire rope, the tensioning wire rope is installed on the tensioning winch and connected to the belt conveyor, the signals collected by the temperature sensor and the tension sensor are transmitted to the tensioning PLC controller, and the tensioning PLC controller controls the frequency converter to tighten or loosen the tensioning winch to adjust the tension of the belt conveyor;

[0007] The network transmission unit includes a tensioning control switch, a remote control switch, and a PLC controller for the tape conveyor; the tensioning control switch is electrically connected to the tensioning PLC controller, the tensioning control switch is electrically connected to the remote control switch, and the remote control switch is electrically connected to the PLC controller for the tape conveyor;

[0008] The remote control unit includes a host computer; the remote control switch is electrically connected to the host computer, and the host computer is provided with automatic and manual buttons for realizing remote operation and monitoring.

[0009] Specifically, the temperature sensor adopts a PT-100 temperature sensor; the processor adopts an S7-1200 PLC processor; and the belt conveyor controller adopts an S7-414H PLC processor, which is used to realize the automatic start and stop of the belt conveyor interlocking control.

[0010] Beneficial effects

[0011] The utility model completes the automatic adjustment of tension through a preset program, can eliminate the shutdown of the belt machine caused by too small or too large tension value, realizes the automatic adjustment of the tensioning tension of the belt machine, reduces the frequent startup caused by large changes in the belt tension value, and can greatly improve the working efficiency; in addition, the utility model can also realize the interlocking start and stop of the belt machine, reduces the belt shutdown caused by faults such as belt tearing, protects the belt system equipment, and minimizes production losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the control structure of the present utility model.

[0013] 1-temperature sensor, 2-tension sensor, 3-tensioning wire rope, 4-tensioning PLC controller, 5-frequency converter, 6-tensioning winch, 7-tape conveyor, 8-tensioning control switch, 9-remote control switch, 10-tape conveyor PLC controller, 11-host computer. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is described below in conjunction with the accompanying drawings and implementation methods.

[0015] like Figure 1 As shown, a control system for remotely adjusting the tension of a tape includes a field control unit, a network transmission unit and a remote control unit.

[0016] The on-site control unit includes a temperature sensor 1, a tension sensor 2, a tensioning wire rope 3, a tensioning PLC controller 4, a frequency converter 5, a tensioning winch 6, and a belt conveyor 7; the tension sensor 2 is installed on the tensioning wire rope 3, the tensioning wire rope 3 is installed on the tensioning winch 6 and is connected to the belt conveyor 7, and the signals collected by the temperature sensor 1 and the tension sensor 2 are transmitted to the tensioning PLC controller 4, and the tensioning PLC controller 4 controls the frequency converter 5 to tighten or relax the tensioning winch 6 to adjust the tension of the belt conveyor 7.

[0017] Specifically, the temperature sensor 1 adopts a PT-100 temperature sensor; the tensioning PLC controller 4 adopts an S7-1200 PLC processor.

[0018] The network transmission unit includes a tensioning control switch 8, a remote control switch 9, and a belt conveyor PLC controller 10; the tensioning control switch 8 is electrically connected to the tensioning PLC controller 4, the tensioning control switch 8 is electrically connected to the remote control switch 9, and the remote control switch 9 is electrically connected to the belt conveyor PLC controller 10.

[0019] The remote control unit includes a host computer 11; the remote control switch 9 is electrically connected to the host computer 11, and the host computer 11 is provided with automatic and manual buttons for realizing remote operation and monitoring.

[0020] The use process of this utility model is as follows:

[0021] When the temperature sensor 1 detects the ambient temperature, the tensioning PLC controller 4 determines which season it is, day or night, according to a program that needs to be set in advance. Assuming it is daytime in summer, the tensioning PLC controller 4 automatically gives the tension rating and the upper and lower limits of the tension according to the pre-set program. The operator can observe the tension trend chart in the host computer 11.

[0022] When the temperature sensor 1 detects a temperature change, assuming that the temperature gradually rises, the belt conveyor 7 begins to gradually loosen with the change of temperature, and the tension sensor 2 on the tensioning wire rope 3 detects that the tension value gradually decreases. The tensioning PLC controller 4 collects the tension change value of the tension sensor 2, the frequency converter 5 starts, and the tensioning winch 6 starts to move away from the belt conveyor 7. The tensioning wire rope 3 is gradually tightened, and the belt conveyor 7 becomes tighter from loose. The tension value detected by the tension sensor 2 gradually increases and fluctuates within the upper and lower limits of the rated tension value. The belt conveyor PLC controller 10 collects the data of the tensioning PLC controller 4 as a normal fluctuation value, and the belt conveyor 7 operates normally.

[0023] On the contrary, when the temperature sensor 1 detects that the temperature is gradually decreasing, the belt conveyor 7 begins to tighten gradually with the change of temperature, and the tension sensor 2 on the tensioning wire rope 3 detects that the tension value is gradually increasing. The tensioning PLC controller 4 collects the tension change value of the tension sensor 2, the frequency converter 5 starts, and the tensioning winch 6 starts to move toward the direction of the belt conveyor 7. The tensioning wire rope 3 gradually relaxes, and the belt of the belt conveyor 7 becomes loose from tight. The tension value detected by the tension sensor 2 gradually increases and fluctuates within the upper and lower limits of the rated tension value. The data collected by the belt conveyor PLC controller 10 from the tensioning PLC controller 4 is a normal fluctuation value, and the belt conveyor 7 operates normally.

[0024] If the tension value suddenly increases or decreases due to a series of sudden failures such as tape tearing or damage to the rubber coating of the driving roller on the tape, the tension sensor 2 detects that the tension value exceeds the upper and lower limits of the rated value instantaneously, and the tensioning PLC controller 4 collects the instantaneous increase or decrease in tension. At the same time, the belt conveyor PLC controller 10 collects the instantaneous change in the tension value in the tensioning PLC controller 4, and the belt conveyor 7 automatically stops, the host computer 13 issues a voice prompt, and the operator in the control room presses the manual button in the host computer 13 to immediately notify the on-site personnel to conduct on-site inspection. The on-site personnel perform fault handling. When the fault is handled, when the belt conveyor PLC controller 10 collects the tension value detected by the tensioning PLC controller 4 and fluctuates within the upper and lower limits of the rated value, it is determined that the belt conveyor 7 is in a normal automatic operation state.

Claims

1. A control system for remotely adjusting the tension of a tape, characterized in that: Including field control unit, network transmission unit and remote control unit; The field control unit comprises a temperature sensor (1), a tension sensor (2), a tensioning steel wire rope (3), a tensioning PLC controller (4), a frequency converter (5), a tensioning winch (6) and a belt conveyor (7); the tension sensor (2) is mounted on the tensioning steel wire rope (3), the tensioning steel wire rope (3) is mounted on the tensioning winch (6) and connected to the belt conveyor (7), the signals collected by the temperature sensor (1) and the tension sensor (2) are transmitted to the tensioning PLC controller (4), and the tensioning PLC controller (4) controls the frequency converter (5) to tighten or loosen the tensioning winch (6) to achieve tension adjustment of the belt conveyor (7); The network transmission unit comprises a tensioning control switch (8), a remote control switch (9), and a tape conveyor PLC controller (10); the tensioning control switch (8) is electrically connected to the tensioning PLC controller (4), the tensioning control switch (8) is electrically connected to the remote control switch (9), and the remote control switch (9) is electrically connected to the tape conveyor PLC controller (10); The remote control unit includes a host computer (11); the remote control switch (9) is electrically connected to the host computer (11); and the host computer (11) is provided with automatic and manual buttons for realizing remote operation and monitoring.

2. A control system for remotely adjusting the tension of an adhesive tape according to claim 1, characterized in that: The temperature sensor (1) is a PT-100 temperature sensor.

3. A control system for remotely adjusting the tension of an adhesive tape according to claim 1, characterized in that: The tensioning PLC controller (4) adopts an S7-1200 PLC processor.

4. A control system for remotely adjusting the tension of an adhesive tape according to claim 1, characterized in that: The belt conveyor PLC controller (10) adopts an S7-414H processor and is used to realize the automatic start and stop of the belt conveyor interlocking control.

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