JPH04163048A - Marking device for cable - Google Patents

Abstract

PURPOSE:To simply perform the length metering and identification of an electric cable laid down by automatically marking a distance mark, a cable number, and the like on the cover of the electric cable at every time when the electric cable is withdrawn by a given length set in advance. CONSTITUTION:When an electric cable 1 is withdrawn from a cable drum 2, the electric cable is pressed against a metering roller 4 by a pressure roller 3, and the metering roller 4 is rotated by that which corresponds to the amount of the electric cable withdrawn. This rotation is detected by a rotation counter 5 and the counted value of the number of rotations is supplied to a counted value register of a control unit 6. An MPU reads a value at the counted value register to calculate the amount of the electric cable 1 withdrawn and, when the amount of the electric cable withdrawn reaches a length being integral number times longer than a reference distance at which marking intervals are set, the MPU discriminates that the cable has moved by a reference distance L, reads out code patterns consisting of a distance mark and a cable number, which are designated or selected in advance by a key board 7, from an ROM or an RAM stored therein, and transfers a signal of the code patterns to a paint jetting device 9. In accordance with the code pattern signal, the paint jetting device 9 jets paint to the electric cable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a length measuring device for measuring the length of a cable.

(Conventional technology) In construction work for laying electrical cables such as power transmission cables that carry electricity and telecommunication cables that transmit electrical signals, it is necessary to calculate the amount of voltage drop, etc. It becomes necessary to know the length of the cable actually pulled out from the drum and used (the amount of cable laid).

For this purpose, so-called length marks (distance marks) consisting of a series of symbols such as numbers are printed or engraved in advance on the sheath of the electric cable at regular intervals. After the cable is laid, the length of the laid cable is determined from the difference in numerical values between the nearest distance marks at each of the starting and ending ends of the laid cable. The distance mark is also used to determine the type of cable.

(Problems to be Solved by the Invention) In the cable length measuring method described above, a distance mark must be engraved in advance on the covering of the electric cable.

For this reason, in addition to the cable manufacturing equipment, a certain amount of equipment for marking etc. is required separately, and what kind of distance marking will be stamped must be agreed between the installer and the cable manufacturer in advance. must be decided.

As a result, the manufacturing cost of electric cables is about 7% higher and delivery takes longer. Furthermore, it is not possible to mark the cables based solely on the judgment of the installer at the electrical cable installation site, and marking may be difficult depending on the type of cable.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus that can easily measure the length of an electric cable and attach an identification mark such as a distance mark at an electric cable installation site or the like.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the cable marking device of the present invention includes a drawing amount detection means for detecting the drawing amount of the electric cable, and an output every time the drawn amount reaches a predetermined amount. determining means for generating a predetermined code pattern signal according to the output of the determining means; and a mark for marking the electric cable in response to the code turn signal. It is characterized by comprising means.

(for production) The withdrawal amount detection means detects the withdrawal amount of the electric cable.

The determining means supplies an output to the code pattern signal generating means every time the withdrawal amount reaches a predetermined amount. The code pattern signal generating means selects a signal pattern corresponding to the above output from among predetermined signal patterns and outputs the selected signal pattern as a code pattern signal. The marking means applies a mark to the electric cable according to the code pattern signal.

As a result, when an electric cable is pulled out from a cable drum, etc., each time the electric cable is pulled out to a predetermined value, a mark is given to the electric cable to indicate the pulled out amount, wire number, etc. Granting can be done easily.

(Example) Hereinafter, an example of the present invention will be described with reference to FIG.

In the figure, an electric cable 1 is pulled out from a cable drum 2 around which an electric cable 1 to be laid is wound, either by manual guidance by a laying worker (not shown) or by mechanical pulling. The drawn-out electric cable 1 passes between a pressure roller 3 and a measuring roller 4. The electric cable 1 is pressed against the measuring roller 4 by the pressure roller 3, and the friction between the electric cable 1 and the measuring roller 4 causes the measuring roller 4 to rotate in the drawing direction by an amount corresponding to the drawing amount of the electric cable.

This rotation is detected by a rotation counter 5 connected to the end of the rotation axis of the measuring roller 4. The rotation counter 5 includes, for example, a rotating disk (not shown) that is connected to the end of the rotating shaft and has a marker attached thereto, a photoelectric converter that reads the marker, and a counter that counts the output pulses of the photoelectric converter. Consisted of. The count value of this counter is reset by operating a reset command from the keyboard switch 7. The count value output of the counter is controlled by the control unit 6.
is supplied to a count value register (not shown).

The control unit 6 includes, for example, a microprocessor (hereinafter referred to as MPU).
), and includes an initial value register, a constant register, a reference distance register, a count value register, an arithmetic register, a withdrawal amount register, a RAM, a ROM, etc. (not shown). A conversion table for converting the withdrawal amount value into a dot pattern code is formed in the ROM.

The count value register stores the count value of the counter. The above constant register contains keyboard switch 7.
The amount of rotation of the measuring roller 4 per one pulse of the photoelectric converter is stored from . The reference distance register stores the distance intervals at which marks should be placed on the electric cable 1 by manual operation of the keyboard switch 7. The MPU is
Multiply the value of the count value register by the value of the constant register to calculate the cable pullout amount, add the value of the initial value register to this, store the addition result in the pullout amount register, and transfer it to the display 8. The amount of electric cable drawn out from the standard value is displayed digitally.

The MPU also generates a predetermined interval value of the amount of the cable to be drawn out, which is preset in the reference distance register, and generates a code pattern signal corresponding to the amount of the cable to be drawn out every 10 m, for example, a signal that encodes the numerical value of the amount of the cable to be drawn out. A dot pattern signal, etc. for identifying the type of paint or cable is read out from the RAM or ROM described above, and is supplied to the paint spraying device 9. The code pattern signal can be separately set by the user in the RAM of the MPU using the keyboard switch 7, or can be selected from a plurality of code patterns stored in advance in the ROM using the keyboard switch 7.

The paint spray device 9 corresponds to the marking means and comprises a paint spray nozzle 10 arranged in the vicinity of the measuring roller 4 .

Then, in response to the supply of the code pattern signal, the paint spraying device 9 sprays paint from the nozzle 10 toward the electric cable 1 to coat the electric cable 1 with a dot pattern corresponding to the contents of the code pattern signal. to form.

Next, the operation of the control section 6 will be explained with reference to the flowchart shown in FIG.

The second (A) is the first control mode of the control unit 6, that is,
This shows a case where distance marks are added at regular intervals, and when the device is powered on, the internal registers of the MPU are cleared or set to initial values. The person installing the electric cable can use the keyboard switch 7 to set the initial value of the cable pullout amount in the initial value register of the MPU. Further, the rotation amount of the measuring roller per one pulse is set in the constant register. A reference distance, for example 10 m, for marking the electric cable 1 at predetermined intervals is set in the reference distance register.

In such a case, the amount of withdrawal is added to this initial value, so to speak, the total value of the amount of withdrawal of the previously laid electric cable and the amount of withdrawal of the currently laid electric cable is measured. If the initial value register is set to "0", the withdrawal amount after resetting the measured value of this device is measured (step 510).
.

After completing the initialization, the MPU monitors the count register to which the output of the revolution counter 5 is supplied, and when the value is updated, it reads it and transfers it to the calculation register (step 5).
11). The extraction amount is calculated by multiplying the count value of the arithmetic register by the value of the constant register (rotation amount of the measuring roller 4 per unit pulse), and is stored in the extraction amount register. If the previous withdrawal amount is set in the initial value register, the value of the initial value register is added to the withdrawal amount register, and this is stored again in the withdrawal amount register (step 512). Measuring roller 4,
The rotation counter 5, steps Sll and S12 correspond to a withdrawal amount detection means.

This withdrawal amount is transferred to the display 8 and displayed digitally (step 813). By looking at this display, the cable installer can visually recognize the length of the electric cable 1 from the reference position to the current position.

If the value of the withdrawal amount register or N is an integer, then from the state where (value of the reference distance register When the distance register value xNl is reached, for example, the withdrawal amount is 59 m1, and the reference distance register L
When the value of is L-10m, if it is N-6, the withdrawal amount is 59
When the distance from m to 60 m is reached, that is, when the amount of pull-out becomes an integral multiple of the reference distance that determines the marking interval, it is determined that the cable has moved by the reference distance (step 51).
4) Step 515 of reading out a code pattern consisting of a distance mark and a line number specified or selected in advance using the keyboard 7, for example, from the built-in ROM or RAM.
), the code pattern signal representing the code pattern is transferred to the paint spraying device 9 (step 516). Here, step S14 corresponds to determination means, and steps S15 and S16 correspond to code pattern signal generation means.

The paint spraying device 9 sprays paint toward the electric cable in accordance with the code pattern signal. For example, if it is a code pattern signal or a one-bar signal expressed as one short horizontal line, one bar mark is placed on the electrical cable every 10 meters as shown in FIG. 3(A). In addition, if the code pattern signal is a 2-bar signal expressed as two short horizontal lines, the 2-bar mark shown in Figure 3 (B) corresponds to the 10
It is attached every m.

In this way, by determining the type of distance mark to be attached to each cable, the type of cable, wire number, etc. can be determined.

Also, by using the keyboard switch 7, the MPT/R
When the line number input to AM is rABCJ and the output of this line number is commanded, the MFU converts Morse code 1゛-conversion by referring to the memory table in the ROM, for example, following the distance mark. Output rABcJ code. That is, as shown in FIG. 3(C), following the 1-bar distance mark, rAJ is "--J, B is "--..."
, C is indicated as ``---・ko'' and attached to the electric cable 1.

In this way, the length and wire type of the electric cable can be determined.

The MPU repeats steps S11 to S16 to mark the electric cable at regular intervals until the keyboard switch 7 commands the end of marking. When the end of marking is commanded, this routine ends (step 517).

The second control mode of the control unit 6 will be explained with reference to the second (B) flowchart.

□In this control mode, a code representing the amount of pullout of the electric cable is given to the sheath of the electric cable. Steps 810 to 14 and step 17 are the same as in the first control mode, so the same reference numerals are given to these parts and the explanation is omitted.

When the electric cable 1 reaches a predetermined distance to be marked (
Step 514), encode the value of the withdrawal amount register (
step 520). The value of the withdrawal amount register is 123456
7890, for example, "1" is ".", "2" is "...", 3 is "...J, r4J is "...", 5 is r
-J, 6 is “-・”, 7 is “-・・”, 8 is “-・・”
. . , 9 is represented as .-1, and 0 is represented as .-1 (step 520). Such a code pattern signal is supplied to the paint injection device 9 (step 521). Then, the coating of the electric cable 1 has the following values for each reference distance of the electric cable:
A code indicating the cable pull-out amount is attached. Step 52
0 and 521 correspond to code pattern signal generating means.

Other controls are the same as those in FIG. 2(A), so explanations will be omitted.

Another embodiment will be described with reference to FIG.

In the structure shown in FIG. 4, parts corresponding to those in the structure shown in FIG.

In this embodiment, a plurality of nozzles 10a and 10b are used on a relatively large-diameter electric cable l to display a plurality of rows of codes, such as distance marks, cable distances from a reference position, wire numbers (wire type names), etc. It is characterized by being applied to the sheathing of electric cables.

In addition to the control content steps 510 to 17 shown in FIG. 2(A), the control unit 6 performs step S20 in FIG. 2(B).
and 21 are executed following step 516. That is, step 516 is executed to connect the two nozzles 10a and 1.
A code pattern signal representing a distance mark and a line number is supplied to the first input end of the paint injection device 9a having a paint injection device 0b, and then steps S20 and 21 in FIG. 2(B) are executed to A code pattern signal representing the distance from the reference position is supplied to the second input end of the sensor 9a.

In this way, as shown in Fig. 5, the code corresponding to the withdrawal amount is displayed in the lower row, for example, "r124J".
-", "..." representing r123J is added, and in the upper row, a distance mark "-" and "..." representing line number rABCJ are added. .

Note that even when a single nozzle 10 is used, a code pattern that continuously outputs this information can be given to the cable, but in this case, the code pattern that is displayed according to the amount of information can be given to the cable. The row of dot patterns becomes long.

Furthermore, it is also possible to arrange two nozzles at opposite positions with the electric cable 1 in between so that they output the same information (code pattern sequence).

This has the advantage that the wire number etc. can be easily read without twisting the cable.

FIG. 6 shows a thermal transfer head 13 instead of the paint spraying device 9.
Only the unique parts of the third embodiment using .

When the amount of movement of the electric cable 1 reaches a predetermined amount ML, the control section 6 drives the driver 11 using a code pattern signal representing a character matrix. The distance mark, distance from the reference position, line number, etc. mentioned above are converted into a code pattern representing a character pattern.

A driver 11 drives each pixel of a thermal transfer head 13 of a thermal transfer device 12 on which a dot matrix is formed. When the electric cable 1 is pulled out by a predetermined amount, the control unit 6 causes the guides 14a and 14b to movably hold the electric cable 1, and transfers the character code pattern to the electric cable while sending out the thermal transfer ribbon 15 in accordance with the movement of the cable. 1
transfer to the coating. The other configurations are the same as in FIG.

Then, as shown in FIG. 7, a distance mark "-", distances r123J, "134", and wire number rABcJ are added to the sheath of the electric cable 1.

In this way, a mark is applied to the sheathing of the electrical cable each time a certain amount of the electrical cable is withdrawn.

Note that it is not necessary to attach the distance mark and the line type mark at a position between the distance marks; for example, the line type mark may be attached in the middle between the distance marks.

Furthermore, the color of the paint may be changed depending on the type of line or the like.

〔Effect of the invention〕

As explained above, the cable marking device of the present invention automatically adds distance marks, wire numbers, etc. to the sheath of the electric cable each time the electric cable is pulled out for a predetermined length. Therefore, it becomes possible to easily measure the length of the installed electric cable and identify the cable.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the device of the present invention, Figure 2 (A)
3 is an explanatory diagram illustrating an example of marking an electric cable, FIG. 4 is a block diagram showing the second embodiment, and FIG. 5 is a flowchart showing the control operation of the control unit 60. FIG. 6 is a block diagram illustrating a third embodiment, and FIG. 7 is an explanatory diagram illustrating an example of marking on an electric cable. Explanation of symbols of main parts 1...Electric cable, 5...Revolution counter, 6...Control unit, 7...Keyboard switch, 8...Display unit,
9.9a...Paint injector, 10.10a, 10b...
·nozzle. Application agent Mr. Sato Figure 3 Figure 4

Claims (1)

[Scope of Claims] A drawing amount detecting means for detecting the drawing amount of the electric cable, a determining means that generates an output each time the drawn amount reaches a predetermined amount, and a predetermined code according to the output of the determining means. A cable marking device comprising: code pattern signal generating means for generating a pattern signal; and marking means for marking the electric cable in accordance with the code pattern signal.