Pay-off anti-head-running device of stranding machine and stranding machine

Abstract

The invention discloses a stranding machine and a pay-off anti-head-running device thereof, and belongs to the technical field of production equipment.The stranding machine comprises a PLC and a take-up meter counter which are electrically connected, the take-up meter counter is arranged between a twisting traction device and a take-up spool, the take-up meter counter comprises a meter counting proximity switch, and the meter counting proximity switch is electrically connected with the PLC. The meter counting proximity switch is used for detecting the length of a finished wire passing through the take-up meter counter and reporting a detection result to the PLC for head running prevention control; the anti-head-running control comprises the steps that the released length of the raw material line on the pay-off spool is obtained through the meter counting proximity switch, the remaining length of the raw material line on the pay-off spool is calculated according to the released length, and when the remaining length is smaller than or equal to the reserved length, the stranding machine is controlled to be decelerated and shut down; according to the stranding machine, an existing stranding machine is electrically modified, the time of speed reduction and shutdown is accurately judged, so that the phenomenon that the head of the copper-plated steel wire on the spool on the pay-off side deviates is prevented, the performance is excellent, and the modification cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of production equipment, and in particular to a wire-releasing and head-running prevention device for a strand twisting machine and the strand twisting machine. Background Art

[0002] In the twisting and tying equipment for steel cord production, the length of the copper-plated steel wire on the single I-shaped wheel on the normal pay-off side is designed to be: the fixed length on the I-shaped wheel on the take-up side * N times + the reserved length. When the twisting and tying equipment produces the twisted steel cord smoothly, after the I-shaped wheel on the take-up side produces N times the fixed length, a certain length of copper-plated steel wire must be reserved on the single I-shaped wheel on the pay-off side, so as to facilitate the machine tool operator to replace the new copper-plated steel wire on the pay-off side and restore the normal operation of the equipment.

[0003] However, when the stranding and rope-making equipment stops abnormally during production, in order to meet the customer's requirements for product length and product quality, the I-shaped wheel on the take-up side needs to unload the semi-finished product. Because the unloaded product is a semi-finished steel cord of any length, the copper-plated steel wire on the pay-off side meets the N times of the fixed length of the steel cord on the take-up I-shaped wheel, or the remaining pay-off copper-plated steel wire exceeds the reserved length. At this time, after the equipment is started again, in order to prevent the steel wire on the I-shaped wheel on the pay-off side of the equipment from running away, the machine operator needs to take care of it in advance and stop it in time. If there is no one to take care of it or the stop is not timely, the steel wire will run away from the stranding machine, and then it needs to be rethreaded, which increases the workload of employees and affects the output of the team.

[0004] In the twisting and roping equipment for steel cord production, since the steel cord on the I-shaped wheel on the take-up side is composed of multiple strands of copper-plated steel wires, different product specifications have corresponding twisting distance requirements, so the length of the copper-plated steel wire on the pay-off side is not equal to the length of the steel cord produced on the take-up side. In addition, the equipment has internal pay-off and external pay-off. If a sensor is added to the I-shaped wheel on the pay-off side to monitor the length of the copper-plated wire, the modification cost is high and the structure is complicated. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a wire-paying anti-runaway device for a stranding machine and a stranding machine, so as to solve the technical problem of wire runaway on the I-shaped wheel on the pay-off side.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a wire-paying and anti-runaway device for a stranding machine, the stranding machine comprising a wire-paying I-shaped wheel, a twisting and traction device, and a wire-receiving I-shaped wheel, the wire-receiving I-shaped wheel releases a raw wire, the raw wire passes through the twisting and traction device to form a finished wire, and the finished wire passes through the wire-receiving I-shaped wheel to be wound; the wire-paying and anti-runaway device comprises an electrically connected PLC controller and a wire-receiving meter meter, the wire-receiving meter meter is arranged between the twisting and traction device and the wire-receiving I-shaped wheel, the wire-receiving meter meter comprises a meter proximity switch, the meter proximity switch is used to detect the length of the finished wire passing through the wire-receiving meter meter, and report the detection result to the PLC controller for anti-runaway control; The anti-runaway control includes: obtaining the released length of the raw material line on the pay-off spool through the meter proximity switch, calculating the remaining length of the raw material line on the pay-off spool according to the released length, and when the remaining length is less than or equal to the reserved length, controlling the stranding machine to slow down and stop.

[0007] Optionally, the PLC controller is electrically connected to a touch screen, and the touch screen is used for human-computer interaction.

[0008] Optionally, the touch screen is integrated with: The first data item is used to set the total length of the raw material line on the pay-off spool; The second data item is used to set the length coefficient of the raw material line on the pay-off spool; The third data item is used to record the released length of the raw material wire on the wire pay-off spool; The fourth data item is used to record the remaining length of the raw material wire on the pay-off spool; The fifth data item is used to set the reserved length of the raw material line on the pay-off spool.

[0009] Optionally, the released length of the raw material line on the pay-off spool is the number of pulse signals of the meter proximity switch multiplied by the length coefficient; the remaining length of the raw material line on the pay-off spool is the total length of the raw material line on the pay-off spool minus the released length.

[0010] Optionally, the touch screen is also integrated with an alarm item, and when the remaining length is less than or equal to the reserved length, an anti-runaway alarm message is displayed.

[0011] Optionally, the strand twisting machine includes a frequency conversion control system electrically connected to the PLC controller, and deceleration and shutdown are achieved through the frequency conversion control system.

[0012] Optionally, the frequency conversion control system includes a host frequency conversion control system, a virtual twister servo control system, a take-up frequency conversion control system and a cable arrangement frequency conversion control system.

[0013] In a second aspect, the present invention provides a stranding machine, including the above-mentioned wire release and head-running prevention device of the stranding machine.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a wire-paying anti-running device and a stranding machine for a stranding machine. By electrically modifying the existing stranding machine, a wire-paying meter is set on the wire-paying side to obtain the released length of the raw material wire on the wire-paying I-shaped wheel, thereby further calculating the remaining length, and then comparing it with the reserved length to determine the timing of deceleration and shutdown, thereby preventing the copper-plated steel wire on the I-shaped wheel on the wire-paying side from running. The device has excellent performance and low modification cost. At the same time, automatic control is performed based on a PLC controller, and there is no need for machine tool operators to take care of it in advance, which reduces the workload of employees and improves the output of the team. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a strand twisting machine provided in an embodiment of the present invention; Figure 2 It is a connection diagram of a strand twisting machine control system provided in an embodiment of the present invention.

[0016] The markings in the figure are: 1. Pay-off spool; 2. Twisting and pulling device; 3. Raw material line; 4. Take-up meter; 5. Take-up spool; 6. Meter proximity switch; 7. PLC controller; 8. Touch screen; 9. Host inverter control system; 10. Virtual twister servo control system; 11. Take-up inverter control system; 12. Arrangement inverter control system. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] Embodiment 1:

[0019] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a wire-paying and anti-head-running device for a stranding machine, the stranding machine comprises a wire-paying I-shaped wheel 1, a twisting and traction device 2 and a wire-taking I-shaped wheel 5, the wire-preventing I-shaped wheel releases a raw wire 3, the raw wire 3 is formed into a finished wire through the twisting and traction device 2, and the finished wire is wound up through the wire-taking I-shaped wheel 5; the wire-paying and anti-head-running device comprises an electrically connected PLC controller 7 and a wire-taking meter 4, the wire-taking meter 4 is arranged between the twisting and traction device 2 and the wire-taking I-shaped wheel 5, the wire-taking meter 4 comprises a meter proximity switch 6, the meter proximity switch 6 is used to detect the length of the finished wire passing through the wire-taking meter 4, and report the detection result to the PLC controller 7 for anti-head-running control.

[0020] The anti-runaway control includes: obtaining the released length of the raw material line 3 on the pay-off spool 1 through the meter proximity switch 6, calculating the remaining length of the raw material line 3 on the pay-off spool 1 according to the released length, and when the remaining length is less than or equal to the reserved length, controlling the stranding machine to slow down and stop.

[0021] In order to facilitate automatic control, the PLC controller 7 is electrically connected to a touch screen 8, which is used for human-computer interaction. The touch screen 8 is integrated with: The first data item is used to set the total length of the raw material line 3 on the pay-off spool 1; The second data item is used to set the length coefficient of the raw material line 3 on the pay-off spool 1; The third data item is used to record the released length of the raw material wire 3 on the wire pay-off spool 1; The fourth data item is used to record the remaining length of the raw material wire 3 on the pay-off spool 1; The fifth data item is used to set the reserved length of the raw material wire 3 on the pay-off spool 1.

[0022] The released length of the raw material wire 3 on the pay-off spool 1 is the number of pulse signals of the meter proximity switch 6 multiplied by the length coefficient; the remaining length of the raw material wire 3 on the pay-off spool 1 is the total length of the raw material wire 3 on the pay-off spool 1 minus the released length. The length coefficient is related to the twisting distance in the product characteristics of the raw material wire and needs to be flexibly set according to actual needs.

[0023] The touch screen 8 is also integrated with an alarm item. When the remaining length is less than or equal to the reserved length, the stranding machine is controlled to slow down and stop, and an alarm message for preventing the stranding machine from running away is displayed. A reset switch item can also be added to the touch screen 8 to reset each data item. For example, when an employee replaces a new pay-off spool 1, the third data item (released length) is reset in meters.

[0024] The stranding machine includes a frequency conversion control system electrically connected to the PLC controller 7, and the frequency conversion control system is used to achieve deceleration and shutdown. The frequency conversion control system includes a host frequency conversion control system 9, a virtual twister servo control system 10, a take-up frequency conversion control system 11, and a cable arrangement frequency conversion control system 12.

[0025] Embodiment 2:

[0026] An embodiment of the present invention provides a strand twisting machine, including the above-mentioned wire release and head-running prevention device of the strand twisting machine.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pay-off and anti-runaway device for a stranding machine, the stranding machine comprising a pay-off I-shaped wheel, a twisting and traction device and a take-up I-shaped wheel, the anti-runaway I-shaped wheel releases the raw material wire, the raw material wire is formed into a finished wire through the twisting and traction device, and the finished wire is wound up through the take-up I-shaped wheel; characterized in that: The wire-releasing anti-runaway device comprises an electrically connected PLC controller and a wire-receiving meter meter, the wire-receiving meter meter is arranged between the twisting and traction device and the wire-receiving I-shaped wheel, the wire-receiving meter meter comprises a meter proximity switch, the meter proximity switch is used to detect the length of the finished wire passing through the wire-receiving meter meter, and report the detection result to the PLC controller for anti-runaway control; The anti-runaway control includes: obtaining the released length of the raw material line on the pay-off spool through the meter proximity switch, calculating the remaining length of the raw material line on the pay-off spool according to the released length, and when the remaining length is less than or equal to the reserved length, controlling the stranding machine to slow down and stop.

2. The wire-releasing and anti-runaway device for a stranding machine according to claim 1, characterized in that: The PLC controller is electrically connected to a touch screen, and the touch screen is used for human-computer interaction.

3. The thread-releasing and anti-runaway device of the stranding machine according to claim 2, characterized in that: The touch screen is integrated with: The first data item is used to set the total length of the raw material line on the pay-off spool; The second data item is used to set the length coefficient of the raw material line on the pay-off spool; The third data item is used to record the released length of the raw material wire on the wire pay-off spool; The fourth data item is used to record the remaining length of the raw material wire on the pay-off spool; The fifth data item is used to set the reserved length of the raw material line on the pay-off spool.

4. The thread-releasing and anti-runaway device of the stranding machine according to claim 3, characterized in that: The released length of the raw material line on the pay-off spool is the number of pulse signals of the meter proximity switch multiplied by the length coefficient; the remaining length of the raw material line on the pay-off spool is the total length of the raw material line on the pay-off spool minus the released length.

5. The pay-off and head-running prevention device of the stranding machine according to claim 2, characterized in that: The touch screen is also integrated with an alarm item, and when the remaining length is less than or equal to the reserved length, an anti-runaway alarm message is displayed.

6. The thread-releasing and anti-runaway device of the stranding machine according to claim 1, characterized in that: The strand twisting machine includes a frequency conversion control system electrically connected to the PLC controller, and deceleration and shutdown are achieved through the frequency conversion control system.

7. The pay-off and head-running prevention device of the stranding machine according to claim 6, characterized in that: The frequency conversion control system includes a host frequency converter control system, a virtual twister servo control system, a take-up frequency converter control system and a cable arrangement frequency converter control system.

8. A strand twisting machine, characterized in that: The invention comprises a wire-paying and anti-runaway device for a stranding machine as described in any one of claims 1 to 7.

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