Device for controlling pitch deviation of twisted pair

Abstract

The utility model relates to the field of automobile wire harness production, in particular to a device for controlling pitch deviation of twisted pairs. Comprising a guide wheel arranged on a stranded wire inlet path, a stranded wire passes through the guide wheel, one side of the guide wheel is provided with a meter counting proximity switch, the meter counting proximity switch is electrically connected with a tachometer, and the tachometer is electrically connected with a controller. According to the utility model, the speed measuring proximity switch is additionally arranged and is used for detecting the pay-off speed. Although the pitch cannot be directly detected, when the pitch is abnormal, the rotating speed of the stranding bow does not change, but the pay-off speed changes along with the rotating speed, so that whether the pitch is abnormal or not can be judged by measuring and monitoring the pay-off speed. Unnecessary waste products can be reduced by judging whether the pitch is abnormal or not, and meanwhile the quality risk can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile wiring harness production, in particular to a device for controlling twisted pair pitch deviation. Background Art

[0002] In automotive wiring harnesses, many systems use twisted pair cables to achieve the purpose of non-interference of signal transmission and better transmission effect. In the process of twisting wires inside the wiring harness factory, the twist pitch is a very important parameter that needs to be controlled. The size of the twist pitch will directly affect the signal transmission capability. Different twist pitches have different anti-interference capabilities for signals of different wavelengths. At the same time, the twist pitch also directly affects the change of the size after twisting. The size after twisting is the key size to ensure the qualified finished product during the pre-installation and assembly process of the automotive wiring harness assembly.

[0003] The twisting action of the existing equipment is: one end of the wire clamp is clamped, and the other end of the wire clamp is driven by a motor to rotate, so that the wires are twisted. Every 0.5 rotation of the wire clamp of the twisting equipment produces a twisting point, and 1 rotation produces a pitch.

[0004] Currently, when the cable bundler produces twisted pair cables, the equipment is unable to detect the pitch in real time online, resulting in failure to promptly detect and alarm when the pitch is abnormal. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a device for controlling the pitch deviation of twisted pair wires.

[0006] The utility model is achieved in this way:

[0007] A device for controlling the pitch deviation of a twisted pair includes a guide wheel arranged on a twisted pair feeding path, so that the twisted pair passes through the guide wheel, a meter proximity switch is arranged on one side of the guide wheel, the meter proximity switch is electrically connected to a tachometer, and the tachometer is electrically connected to a controller.

[0008] Furthermore, the controller is a PLC controller.

[0009] Furthermore, the controller is electrically connected to the sound and light alarm.

[0010] Furthermore, a metal detection column for triggering the meter proximity switch is provided on the guide wheel.

[0011] Furthermore, the metal detection column is a bolt structure.

[0012] Furthermore, the device also includes a guide wheel fixing bracket, which includes a liftable column and a guide wheel fixing rod vertically connected to the column, and the guide wheel fixing rod is provided with a bearing movably connected to the guide wheel.

[0013] Furthermore, the column is provided with a fixing plate for fixing the meter proximity switch, and the fixing plate is provided with a through hole for penetrating the meter proximity switch, so that the meter proximity switch is located at the sensing distance of the guide wheel.

[0014] The advantages of the utility model are:

[0015] The utility model adds a speed measuring proximity switch to detect the pay-off speed. Although the pitch cannot be detected directly, when the pitch is abnormal, the rotation speed of the bow does not change, while the pay-off speed will change accordingly, so whether the pitch is abnormal can be determined by measuring and monitoring the pay-off speed. Determining whether the pitch is abnormal can reduce unnecessary waste and greatly reduce quality risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] The numbers in the figure are: stranded wire 100, guide wheel 1, meter proximity switch 2, tachometer 3, controller 4, guide wheel fixing bracket 5, liftable column 51, guide wheel fixing rod 52, fixing plate 53. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The technical solution of the utility model is as follows:

[0022] See also Figure 1As shown, a device for controlling the pitch deviation of a twisted pair cable of the utility model includes a guide wheel 1 arranged on the wire feeding path of the twisted wire, so that the twisted wire 100 passes through the guide wheel 1, a meter proximity switch 2 is provided on one side of the guide wheel 1, the meter proximity switch 2 is electrically connected to a tachometer 3, and the tachometer 3 is electrically connected to a controller 4.

[0023] Specifically, the guide wheel 1 is provided with a metal detection column 11 for triggering the meter proximity switch, which is generally a bolt structure. Each time the bolt approaches the proximity switch, the proximity switch flashes once and gives a signal to the tachometer.

[0024] In a specific embodiment, the device further comprises a guide wheel fixing bracket 5, the guide wheel fixing bracket 5 comprises a liftable column 51, a guide wheel fixing rod 52 vertically connected to the column 51, and a bearing (not shown) movably connected to the guide wheel 1 is sleeved on the guide wheel fixing rod 52. The liftable column 51 is used to adjust the position of the guide wheel so that the stranded wire is fully compacted on the guide wheel to prevent slipping and avoid inaccurate metering.

[0025] The column 51 is provided with a fixing plate 53 for fixing the meter proximity switch 2 , and the fixing plate 53 is provided with a through hole for penetrating the meter proximity switch 2 , so that the meter proximity switch 2 is located at the sensing distance of the guide wheel 1 .

[0026] In a specific embodiment, the controller is electrically connected to an audible and visual alarm (not shown) to alert the operator of the occurrence of abnormality.

[0027] Here’s how to use it:

[0028] The guide wheel 1 is installed on the stranding wire feeding path. The stranding wire passes over the guide wheel, driving the guide wheel to rotate. The proximity switch is installed on the side of the guide wheel. When the guide wheel rotates, the proximity switch can detect the number of turns of the guide wheel per unit time. The meter proximity switch is a conventional high-frequency signal sending switch. The tachometer (which can be installed under the operation screen of the stranding machine) works according to the frequency of the received switch signal, thereby completing the speed measurement (tachometer or tachometer). The tachometer is directly connected to the PLC and sends the signal to the PLC.

[0029] When the pitch is constant, the measured speed is constant. When the pitch changes, the measured speed will also change. According to the upper and lower limits of the pitch required by the process, set the upper and lower limits of the speed on the tachometer. If the speed exceeds the upper and lower limits, it means that the pitch exceeds the range of process requirements. The tachometer alarm output gives a signal to the PLC, and the PLC stops abnormally.

[0030] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A device for controlling twisted pair pitch deviation, characterized in that: The invention comprises a guide wheel arranged on the stranded wire feeding path, so that the stranded wire passes through the guide wheel, a meter proximity switch is arranged on one side of the guide wheel, the meter proximity switch is electrically connected to a tachometer, and the tachometer is electrically connected to a controller.

2. The device for controlling twisted pair pitch deviation according to claim 1, characterized in that: The controller is a PLC controller.

3. The device for controlling twisted pair pitch deviation according to claim 1, characterized in that: The controller is electrically connected to the sound and light alarm.

4. The device for controlling twisted pair pitch deviation according to claim 1, characterized in that: The guide wheel is provided with a metal detection column for triggering the meter proximity switch.

5. The device for controlling twisted pair pitch deviation as claimed in claim 4, characterized in that: The metal detection column is a bolt structure.

6. The device for controlling twisted pair pitch deviation according to claim 1, characterized in that: The device also includes a guide wheel fixing bracket, which includes a liftable column and a guide wheel fixing rod vertically connected to the column, and the guide wheel fixing rod is sleeved with a bearing movably connected to the guide wheel.

7. The device for controlling twisted pair pitch deviation according to claim 6, characterized in that: The column is provided with a fixing plate for fixing the meter-counting proximity switch, and the fixing plate is provided with a through hole for penetrating the meter-counting proximity switch, so that the meter-counting proximity switch is located at the sensing distance of the guide wheel.

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