JP2587929B2 - Measurement and display device for cable length in cable manufacturing - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring and displaying the length of a manufactured cable when a cable is manufactured by extruding and covering an outer jacket of a cable core. is there.

[Technical background]

For example, in the communication cable manufacturing line, referring to FIG. 5, a cable core p is led out of a core drum 1 and the cable core p is formed by an aluminum foil polyethylene laminated tape 2 in an outer periphery thereof in a forming machine 3. After that, it enters the crosshead 4 of the jacket extruder 5 and is covered with the jacket to form the cable P.

The jacket of the cable P is cooled while passing through the water tank 6, passes through a strip length measuring instrument 7 and a transaction machine 8, and is then wound around a winding drum 9. The winding amount is the required length, and when the winding becomes full, that is, when the required winding amount is reached, the cable P is cut and switched to a new winding drum 9.

In the manufacture of this cable, it is very important that the winding amount is constant as a commercial product. For this reason, various measures have been taken to make the winding amount constant,
First, as one means, a winding amount is determined based on a measured value of the strip length measuring device 7.

However, the cable core p is provided with a core mark m every required length in the manufacturing process, for example, every 500 m, and the core mark m may correspond to the end of the winding cable P of the winding drum 9. preferable. Because, when constructing the cable, when the worker processes the terminal, if the frame mark m is not within the allowable range in the terminal, for example, within 1 m from the terminal end face, the worker is uneasy about the cable length, which is not preferable. is there.

For this reason, the wound cable end must correspond to the core mark m of the cable core, and it is not preferable to cut based on only the measurement value of the strip length measuring device 7. Because, when the cable core p is unreeled from the drum 1,
This is because, in many cases, the length of the core mark m is different from the length of the core mark m that has expanded and contracted due to the twisting and the running tension and the like, and has passed through the jacket extruder 5.

Therefore, in the above-described cable manufacturing, when the worker near the core drum 1 recognizes the core mark m, the worker goes to a position immediately after the jacket extruder 5 and moves on the jacket corresponding to the core mark m. The cable mark M is attached by sticking an adhesive aluminum foil or the like to the worker. When the cable mark M passes through the strip length measuring instrument 7, the worker near the strip length measuring instrument 7 obtains the cut strip length. The cable P is cut at the position of the cable mark M after the take-up machine 8 and the winding drum 9 is replaced.

[Problems to be solved by the invention]

When the cable is cut, the cable mark M may be attached to a distant position that does not correspond to the core mark m.
When the cutting position of the cable P is too short of the required winding amount, the cable length becomes short, resulting in a defective product. Conversely, when the cutting position is too long, the cable length becomes long and the cost increases, Either way is not preferred. For this reason, it is very important to check whether or not the measured value of the passage of the cable mark M matches the predetermined length.

However, conventionally, the measuring strip length indicator attached to the strip length measuring instrument 7 only displays the measured value (the feed length of the cable P) at the time of measurement by the strip length measuring instrument 7, and the The display value constantly changes with the passage. For this reason, it is often difficult to confirm whether the passing measured value of the table mark M matches the predetermined strip length, and if there is anxiety, the operator tends to stop cutting. If it is stopped, measures such as stopping the line must be taken until the correct confirmation, and workability becomes a problem.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above points, and has as its object to surely confirm a cable length when detecting a cable mark M.

[Means for solving the problem]

In order to solve the above-mentioned problem, in the present invention, when manufacturing a cable for cutting the cable P based on the above-described cable mark M, a running length of the cable P is measured before the cable take-up machine 8. In addition to providing a line length measuring device 7 and its measuring line length display 10, a detector 15 for the cable mark M is provided, and the measuring line length indicator 10 is connected to the line length measuring device 7, and the detector 15 is connected to the strip length measuring instrument 7 and the measuring strip length display 10, and the strip length measuring instrument 7 resets the measurement by the detection signal of the cable mark M of the detector 15, and displays the measurement strip length. The device 10 is configured to reset the display after displaying the measured value of the strip length at the time of the detection by the detection signal for a certain period of time.

[Action]

In the cable length measuring and displaying apparatus according to the present invention configured as described above, when the detector 15 detects the cable mark M, the cable length at the time of the detection is continuously displayed for a certain period of time. If the displayed value is within the allowable range of the length to be cut, the cable P is cut at the position of the cable mark M. At this time, since the display is continued for a certain period of time, confirmation is easy.

After the display time has elapsed, the display of the length is reset, and the measurement of the length of the next winding amount is displayed.

〔Example〕

This embodiment relates to a production line of the above-mentioned communication cable P, and as shown in FIG.
The cable core p from the core drum 1 is wound with an aluminum foil polyethylene laminated tape 2 by a forming machine 3 and then covered with a jacket by a jacket extruder 5 to form a cable P. The material to be cooled is cooled in a water tank 6 and wound around a winding drum 9 via a length measuring device 7 and a take-up machine 8.

In front of the transaction machine 8, a detector 15 shown in FIG. Detector 15 is a guide roller
When a certain distance from the cable P is maintained by the cable 16 and the cable mark M is detected, a detection signal is input to the sensor controller 35 in the display panel 10 (see FIG. 4). Detector
Reference numeral 15 uses an optical sensor, a magnetic sensor, or the like that can detect the cable mark M.

The length measuring instrument 7 has a belt 13 and a guide roller 14 above and below the cable P as shown in FIG.
A disk 12 with a slit is in contact with the disk, and the disk 12 rotates as the belt 13 travels. A photo sensor 30 is opposed to the disk 12 and emits a signal to the photo sensor 30 as it passes through the slit.
(See FIG. 4).

As shown in FIG. 3, the display panel 10 has a main display 20 which latches a count value (measured value) at the moment when the cable mark M is detected and displays the measured value on a panel surface for a certain time, as shown in FIG. Printer 22, sub-display 23 for displaying measured values without latching, and manual reset button
21 are provided.

The two indicators 20, 23 and the like are controlled as shown in FIG. That is, the rotary encoder 31 connected to the photosensor 30 shapes the slit detected by the photosensor 30 into a pulse signal for every 0.1 m of the cable and a pulse counter.
Enter 32. The measured value of the pulse counter 32 is input to the memory 33 and the memory buffer 36.

On the other hand, the sensor controller connected to the detector 15
The output of 35 is connected to respective reset terminals of the pulse counter 32, the memory 33, and the memory buffer 36. When the detector 15 detects the cable mark M, the pulse controller 32, the memory 33 And the memory buffer 36 is reset.

The reset button 21 is also connected to reset terminals of the pulse counter 32, the memory 33, and the memory buffer 36 via the signal converter 39.

A segment driver 34 is connected to the memory 33, and the sub-display 23 is connected to the segment driver 34. The sub-display 23 always displays the count value of the pulse counter 32 input to the memory 33. The contents stored in the memory buffer 36 are read by the print driver 37 and the segment driver 38.

Here, when a reset signal is input, the memory buffer 36 buffers (latches) the stored contents at that time for a certain period of time and then clears it. At this time, the printer driver 37 outputs the value to the printer 22. Print. The segment driver 38 is a memory buffer
The value of 36 is converted and displayed on the main display 20. That is, the printer 22 and the main display 20 print the measured value when the cable mark M has passed and display it for a certain period of time.

By the continuous display of this fixed time, the measured value when passing the cable mark M, that is, the measured value of the cable strip length from the time of detection of the previous cable mark M to the time of this detection,
The operator can easily and reliably check. If the length of the check strip is within the allowable range, the cable P is cut at the position of the cable mark M and switched to a new winding drum 9. On the other hand, if it is out of the allowable range, the production is stopped and the cause is investigated.

〔The invention's effect〕

The present invention is configured as described above, and the cable mark M
Is detected and the measurement line length at the time of the detection is continuously displayed for a certain period of time.
The cable length at the detection position can be recognized reliably. As a result, the cutting position of the cable P can be determined without anxiety, and the operation can be performed quickly. Further, even if the measuring strip length is out of the allowable range, the occurrence of defective products due to cutting mistakes such as easy cutting can be prevented. it can.

[Brief description of the drawings]

1 is a schematic view of one embodiment of the present invention, FIG. 2 is a schematic view of a counter and a detector of the embodiment, FIG. 3 is a view showing a display panel surface of a display panel of the embodiment, FIG. FIG. 5 is a control block diagram of the embodiment, and FIG. 5 is a schematic diagram of a conventional cable production line. P ... cable, p ... cable core, m ... core mark, M ... cable mark, 1 ... core drum, 5 ... jacket extruder, 6 ... jacket cooling water tank, 7 ... strip length Measuring instrument, 8 Cable take-up machine, 9 Winding drum, 10 Measurement length display (measurement length display panel), 12 Disk, 15 Detector, 22 Main display 32, pulse counter, 35, sensor controller, 36, memory buffer, 38, segment driver.

Claims (1)

(57) [Claims] 1. A core extruder 5 is wound around a core core 1 having a core mark m at a required interval in the length direction and along a running path of the cable core p from the core drum 1. , A jacket cooling water tank 6, a cable take-up machine 8, and a winding drum 9 are sequentially provided, and the cable core p is run by the cable take-up machine 8, and the jacket extruder 5
A cable P is extruded and coated on the cable core p to form a cable P, and a cable mark M corresponding to the core mark m is attached to the cable P, and the cable is formed by the jacket cooling water tank 6. An apparatus for measuring and displaying the length of the traveling cable when cooling the jacket of P, cutting the cable P at the position of the cable mark M and winding the cable P to a required length on the winding drum 9. A cable length measuring device 7 for measuring the running length of the cable P and a cable length indicator 10 are provided in front of the cable transaction machine 8, and a detector 15 for the cable mark M is provided. The measuring line length indicator 10 is connected to the measuring device 7 and the detector 15 is connected to the line length measuring device 7 and the measuring line length displaying device.
The measuring device 7 resets the measurement according to the detection signal of the cable mark M of the detector 15, and the measuring device 10 displays the measuring device at the time of the detection by the detecting signal. A cable length measurement and display device in cable manufacturing, wherein a measured length value is displayed for a predetermined time and then reset.