JP3053302B2 - Control method of insulation coating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an insulating coating apparatus for manufacturing an insulated wire by applying an insulating coating to the outer periphery of a wire.

[0002]

2. Description of the Related Art An insulation coating apparatus for manufacturing an insulated wire by applying an insulation coating to the outer periphery of a wire is widely used as an electric wire coating apparatus for manufacturing a coated electric wire. This wire covering device is
The resin is supplied from a hopper, and the outer periphery of the metal wire is coated with insulation at the crosshead portion of the extruder to continuously manufacture electric wires.

[0003] In the production of this type of coated electric wire, when the color of the coated resin is changed, the following method has conventionally been adopted. That is, in the case of a one-hopper type electric wire covering apparatus, a method is adopted in which the entire line is completely stopped after full scale, and then the resin in the hopper is replaced. Also, 2
In the case of a hopper type wire covering device, an operator empirically switches the hopper based on the bobbin switching of the winding machine (crossover) and the amount of resin remaining in the extruder. The operator confirms that the color has completely changed to the new resin, and then manually crosses over from the waste wire bobbin coated with a mixture of old and new resin to the new bobbin, and shifts to production operation. .

[0004]

In the conventional method, when the resin color is changed, it is necessary to stop and start the production line, and it is necessary for the operator to have empirical knowledge and judgment on the hopper switching timing. The operation rate of the entire production line is poor, the productivity is lacking, the skill of the operator is required, and the judgment is varied due to the individual difference of the operator, and the number of waste lines is increased.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention calculates the timing of hopper switching and crossover in a control device and automatically controls the timing by a command from the control device. An object of the present invention is to make it possible to efficiently manufacture an insulated wire.

[0006]

The invention according to claim 1 is characterized in that :
It is an symptom supplies hopper or et resin into an extruder, the insulating coating apparatus for producing the insulated wire is subjected to outer peripheral insulating coating of the strand material into the extruder, the hopper
Upon the resin old exchange switching, it was allowed previously given as a parameter the rotation amount of the extruder from switching the hopper until the end Migade of Kyuki fat in control <br/> GoSo location, the control
The equipment is only covered with old resin after switching the hopper.
When calculating the length of the insulated wire using the rotation amount,
Then, based on the calculation result, the switching tie
The point is to control the mining. The invention according to claim 2
The feature of this is that the resin is supplied from the hopper to the extruder.
The extruder is used to apply insulation coating to the outer circumference of the wire.
A bobbin of a winder for manufacturing an insulated wire and winding the insulated wire.
Switch the hopper in the insulation coating device that winds up with
New and old mixed resins start to appear when replacing old and new resins
The amount of rotation of the extruder from
Parameters, and the control device
The length of the waste line of the mixed resin is calculated using the rotation amount.
And the crossing of the winder based on the calculation result.
The point is to control the timing of over. Also, billing
The feature of the invention described in Item 3 is that the hopper
Oil to the extruder, which extrudes
While producing an insulated wire by applying an edge coating, the insulated wire is
In an insulating coating device that is wound by a bobbin of a winder,
When changing the hopper and replacing the resin with the old or new one,
Of the extruder from when the
The amount of rotation (Rev ₁ ) and the end of the new and old mixed resin
The amount of rotation of the extruder (Rev ₂ ) up to
The control device has the
Insulation wire length covered only with old resin after switching par
Is calculated using the rotation amount (Rev ₁ ), and this calculation
Control the hopper switching timing based on the result
And the length of the waste wire by the mixed resin is rotated.
(Rev ₂ ), and based on this calculation result,
To control the timing of the crossover of the winder
It is in.

[Action] In the resin extruder, switch the hopper to
When changing the hopper, change the hopper for a predetermined time.
Old resin is extruded, and then the new and old mixed tree
The grease is extruded, and then the new resin is extruded
Will be issued. Therefore, after switching the hopper,
When the resin starts to come out, the end of the full winding length of the wire is closed.
Switch the popper so that it passes through the head
Adjusting the brush is the most efficient way to change the resin. Soshi
And the old and new mixed resin is coated, and the coated wire is
It is wound on another bobbin as a waste wire. And that
Later, the new resin is coated. The part covered with the new resin
When the start end of the bobbin reaches the bobbin,
Switch to a new bobbin (crossover) and rewind
Thereby, the most efficient winding can be performed. on the other hand,
In the case of an extruder, the number of rotations (rpm) of the extruder and the line
Since the linear velocity (m / sec) of the material is known, the extruder
If the amount of rotation is known, (the amount of rotation / number of rotations) x (linear velocity)
= (Length of wire). In addition, the passing length of the wire (winding
Length is always measured and the total length of the wire (full length)
Is also known. Therefore, the present invention according to claim 1
Then, when switching the hopper and replacing the old and new resin,
And then switch the hopper until only the old resin finishes
The amount of rotation of the extruder is previously stored in the controller as a parameter
When a resin material replacement command is issued,
Control device is only covered with old resin after switching the hopper
When the length of the insulated wire to be calculated is calculated using the rotation amount,
Then, based on the result of this calculation,
Before, the end of the wire passes through the crosshead,
By controlling the hopper switching timing
I have. Similarly, in the invention according to claim 2, the hopper
When replacing the resin by replacing the old and new
Controls the amount of extruder rotation from the start of
The control device
However, the length of the waste wire by the mixed resin is used for the rotation amount.
And calculate based on the calculation result.
I control the timing of the crossover
You. Also, the invention according to claim 3 performs the two controls.
It is trying to.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 illustrates an electric wire coating device as an example of an insulating coating device. In FIG. 1, 1 is a coil stocker, 2
Is a wire drawing machine, and 3 is an annealer. The metal wire 4 stored in the coil stocker 1 is reduced in diameter by the wire drawing machine 2 and then annealed by the annealer 3.

Reference numeral 5 denotes an extruder, which supplies a resin for insulation coating such as a foamed resin to the crosshead section 8 from the hopper 6 or 7, and applies insulation coating to the outer periphery of the metal wire 4 at the crosshead section 8 to provide a coated electric wire. 9 10 is a water cooler that cools the electric wire 9,
Reference numeral 11 denotes a winder for winding the electric wire 9, which is provided with a bobbin 12 for a product and a bobbin 13 for a waste wire in a switchable manner.

Reference numeral 14 denotes a control device composed of a microcomputer or the like, to which a measuring device 15 for measuring the electric wire 9, a speed measuring device 16 for measuring the linear velocity of the electric wire 9, and other setting devices 17 are connected. I have.
The control device 14 has various arithmetic processing functions as shown in FIG. When the resin supplied to the extruder 5 is switched from the old resin A of the hopper 6 to the new resin B of the hopper 7 in the electric wire covering apparatus having the above configuration, the state of both the resins A, B and the mixed resin C in the extruder 5 is changed. Is shown as a conceptual model in FIG.

That is, with the rotation of the extruder 5, the resins A, B, and C are distributed as shown in FIG.
Move in the direction of the arrow from the side of the hoppers 6 and 7 to the crosshead section 8 in the cylinder. Therefore, now, the cylinder volume of the extruder 5 is V0, the extruding amount to be extruded by one rotation of the screw of the extruder 5 is ΔV, the mixing amount ΔVs by which both resins A and B are mixed by one rotation of the screw, and the hoppers 6 and 7 are The amount of rotation Rev ₁ of the extruder 5 from the time of switching until the old resin A alone is output,
Extruder 5 from the start of new and old mixed resin C to the end
When the rotation amount Rev _2, from conceptual model of Figure 2, is derived the following equation.

Vo = (ΔV + 1/2 ΔVs) Rev ₁ …………………………… = (ΔV−1 / 2 ΔVs) (Rev ₁ + Rev ₂ ) ………………… _{...... Rev 1 = 2Vo / (2ΔV} + ΔVs) .......................................... expressions and expressions than _{Rev 2 = 2 Vo / (2ΔV} -ΔVs) -Rev 1 .................. from the equation Therefore, when the resin is changed from the old resin A to the new resin B, the controller 14 has the rotation amounts Rev ₁ and Rev ₂ as parameters in advance. FIG.
The arithmetic processing is performed in the following order to control the switching of the hoppers 6 and 7 and the timing of the crossover of the bobbins 12 and 13.

Next, the control method will be described with reference to the flowchart of FIG. However, l _H1 is hopper 6,7
After switching, the wire length covered with only the old resin A, l _H2 is the wire length covered with the mixed resin C (waste wire length), and l _H3 is the wire length of the new resin B after switching the hoppers 6 and 7. Line length until it can be taken,
l _K2 is the distance from the extruder 5 to the measuring instrument 15 on the winder 11 side,
l is the measuring length, l ₂ is the setting measuring length (full length), l _X1 is the measuring length when switching hoppers 6 and 7, l ₀ is the measuring length at the previous expiration, V _e is the extruder The number of revolutions, V _L, is the linear velocity.

Now, when the control device 14 receives a command to replace the old resin A with the new resin B (step S1), the rotation amounts Rev ₁ and Rev which the control device 14 has as parameters in advance.
_{2. From} the rotation speed V _e and the linear velocity _VL , each line length l _H1 , l _H2
And l _H3 are calculated (step S2). Next, a value obtained by subtracting the current measurement length l from the full length l ₂ is compared with a value obtained by adding the distance l _K2 to the line length l _H1 to determine whether or not the latter is equal to or greater than the former ( Step S3). If the latter is equal to or greater than the former, the coating with the old resin A is performed until the full scale is reached. At that time, the controller 14 issues a switching command to switch from the hopper 6 to the hopper 7, and the hopper 7 The new resin B is supplied to the extruder 5. At the same time, the measurement length l at that time is read into the control device 14 as the measurement length l _X1 (step S4).

[0014] Then the total Shakunaga l compares the expiration value l ₂ (step S5), and the former is crossover winder 11 if the large. That is, since the electric wire 9 of the old resin A has been wound up to the full length on the bobbin 12, the crossover from the bobbin 12 to the bobbin 13 is performed, and the subsequent useless wire is wound up on the bobbin 13. On the other hand, the measurement of the waste line is started, and the measurement length l
Is read into the control device 14 (step S6).

Then, the total length l _X1 at the time of hopper switching is subtracted from the total length l ₀ at the time of the previous expiration, and the total length l
Is compared with the line length l _H3 until the new resin B is coated after the hopper is switched. If the former becomes longer than the latter (step S7), the new bobbin 13 for the waste wire is used. Crossover to the bobbin 12 for resin B (step S
8) Wind the electric wire 9 covered with the new resin B around the bobbin 12,
It shifts to production operation (Step S9).

Therefore, if such a control method is adopted, the switching of the hoppers 6 and 7 and the timing of the crossover of the bobbins 12 and 13 are automatically performed only by the operator issuing a resin exchange command to the control device 14. Since it is controlled, it does not require the skill of the operator, and also enables efficient production with less waste lines. In the embodiment, the case where the electric wire 9 is manufactured has been described as an example. However, the present invention is not limited to this, and it goes without saying that the present invention can be widely used for manufacturing an insulated wire.

[0017]

According to the present invention, a hopper switching tie
And crossover timing are automatically controlled.
Thus , an insulated wire can be easily and efficiently manufactured with a small amount of waste wire.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing one embodiment of the present invention.

FIG. 2 is a conceptual model diagram of an extruder showing one embodiment of the present invention.

FIG. 3 is a flowchart at the time of control showing one embodiment of the present invention.

[Explanation of symbols]

 4 Metal wire 5 Extruder 6 Hopper 7 Hopper 11 Winder 12 Bobbin 13 Bobbin 14 Control device 15 Measuring instrument 16 Speed measuring instrument

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 13/14 B29C 47/00-47/96

Claims (3)

(57) [Claims] 1. A resin is supplied from a hopper (6) (7) to an extruder (5), and the extruder (5) applies an insulating coating to an outer periphery of a wire (4) to produce an insulated wire (9). In the insulation coating apparatus, when the hoppers (6) and (7) are switched to replace the old and new resins, the extruder (5) from the time when the hoppers (6) and (7) are switched to the time when only the old resin (A) is completely discharged. the amount of rotation of the) (Rev ₁₎ a control device
(14) as a parameter in advance , the control device (14), after switching the hopper (6) (7)
The length (l _H1 ) of the insulated wire (9) covered only with the old resin (A)
Calculation is performed using the rotation amount (Rev ₁ ), and the calculation result is obtained.
The switching timing of the hoppers (6) and (7) based on the
A method for controlling an insulating coating apparatus, characterized by controlling. 2. A resin is fed from a hopper (6) (7) to an extruder (5).
The extruder (5) supplies the insulation to the outer periphery of the wire (4).
To produce an insulated wire (9)
Insulation coating for winding (9) with bobbins (12) and (13) of winder (11)
In the equipment, the hopper (6) and (7) are switched to
When the old and new mixed resin (C) starts to appear when replacing the old
The amount of rotation of the extruder (5) until _Two ) To the control device (1
4) have it as a parameter in advance, The control device (14) removes a waste line due to the mixed resin (C).
Length (l _H2 ) Is the rotation amount (Rev _Two )
The crossover of the winder (11) is
Insulation coating device characterized by controlling the timing of
Control method. 3. The resin is fed from a hopper (6) (7) to an extruder (5).
The extruder (5) supplies the insulation to the outer periphery of the wire (4).
To produce an insulated wire (9)
Insulation coating for winding (9) with bobbins (12) and (13) of winder (11)
In the equipment, the hopper (6) and (7) are switched to
When replacing the old one, switch the hopper (6) (7) and then
The amount of rotation of the extruder (5) until only the ₁ )
From the beginning of the new and old mixed resin (C)
Extruder (5) rotation (Rev _Two ) And parameters to the control device (14).
In advance, The control device (14), after switching the hopper (6) (7)
Insulated wire (9) covered only with old resin (A) _H1 )
The rotation amount (Rev ₁ ) And calculate
The switching timing of the hoppers (6) and (7) based on the
Control and Length of waste wire (l
_H2 ) Is the rotation amount (Rev _Two ) And calculate
The crossover tie of the winder (11) is
Of insulating coating equipment characterized by controlling
Method.