JPH0896637A - Electric wire covering device having composite vertical type cooling device - Google Patents

Abstract

PURPOSE: To make possible reduction in the occupying area of an equipment and small lot multi-production by towing and moving a hot melt covering-applied conductor in a noncontact condition to a constitutive member in a composite vertical type cooling device, and performing cooling processing by cooling water. CONSTITUTION: A conductor 36 is passed through a hopper 32 to store a resin material 36 by a first roller 33, and is sent to an extruder 30, and is formed as a covered electric wire 40 by performing hot melt covering work, and is sent to a composite vertical type cooling device 2. In this device 2, first of all, the covered electric wire 40 is sent to a cylindrical first cooling tank 3 having a water reservoir by a first pulley 6, and is sent to a second cooling tank 4 storing cooling water 4A through a restriction nozzle. At this time, the conductor 36 and the covered electric wire 40 are towed and moved in a noncontact condition to a constitutive member by the first roller 33 and the first pulley 6. Next, the covered electric wire 40 is upward reversed by a third pulley 8, and is sent to an upper water remover 11 through the second cooling tank 4 by a second pulley 7 after the cooling water is jetted by a shower 9, and the covered electric wire 40 dried by the water remover 11 is sent to a winder through a second roller 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire coating apparatus for coating a conductor by extrusion processing, and more particularly to an electric wire coating apparatus equipped with a composite vertical cooling device composed of a plurality of cooling tanks.

[0002]

2. Description of the Related Art Heretofore, extrusion coating has been generally adopted among heat melting coatings in the electric wire coating process. This is because the thermoplastic resin is applied to the surface of the conductor in a molten state by heating,
This is cooled and solidified to form a continuous coated surface. Initially, such a wire coating device adopted a horizontal type, that is, a cooling water tank extending in the horizontal direction in the cooling tank of the coated wire, and horizontally moving the high-temperature coated wire in the horizontal cooling tank by horizontally moving it. Was. However, the horizontal cooling tank has a large installation space and is extremely disadvantageous in terms of economic efficiency. Therefore, for the main purpose of reducing the space, a configuration has been proposed in which a part of the horizontal cooling tank is replaced with a vertical cooling tank (that is, a cooling water tank extending in the vertical direction) (JP-A-2-278617). FIG. 6 shows a side view of a conventional electric wire coating device having such a configuration.

In the electric wire coating device shown in FIG. 1, a conductor 36 is introduced into the extruder 30. Extruder 30
Then, the cross head 31 heats and melts the thermoplastic resin charged from the hopper (not shown), and the conductor 36
It is applied to the surface and extrusion coated. The electric wire in the high temperature state (for example, around 170 degrees Celsius) after the coating treatment is the water supply pipe 56.
Primary cooling is performed in a columnar vertical water tank 55 supplied with water.
Then, the electric wire is redirected through the pulley 59, introduced into the long horizontal water tank 57, and secondarily cooled while moving laterally in the cooling water 58 stored in the horizontal water tank 57,
The coated electric wire 40 having the coating solidified and fixed is manufactured.

[0004]

As described above, in the conventional electric wire coating apparatus, the high temperature coated electric wire after extrusion is dipped in the vertical and horizontal cooling water tanks, and the inside of the cooling water tank is vertically and horizontally oriented, respectively. It was cooled in the process of moving to.
However, in recent years, as the extrusion speed has increased, a horizontal cooling water tank having a longer dimension has been required accordingly, so that the installation occupying area of the electric wire coating device increases, which causes a cost increase.

Further, as a result of the extension of the cooling distance in the horizontal direction, stronger electric wire pulling must be performed in order to keep the electric wire stretched without being bent, and a plurality of capstans having a strong drive source are required. Therefore, there is a drawback that the operating cost increases together with the equipment cost.
In addition, as a result of the above-mentioned strong electric wire pulling, a strong force is applied to the covering portion that has not been sufficiently cooled and fixed, which may lead to an undesirable situation of deformation of the covering portion. On the other hand, recently, there are increasing cases where various kinds of small-quantity production are required from the market, but it cannot be said that the conventional configuration is not always suitable for frequent changes of operating conditions accompanying the various kinds of small-quantity production.

That is, in the conventional combination structure of the vertical cooling water tank and the horizontal cooling water tank, it is difficult to suppress an increase in installation area including facility cost and operating cost. In addition, it is difficult to avoid deformation of the electric wire. Furthermore, it has been difficult to change the operating conditions in response to a variety of small-quantity production. Therefore, a configuration consisting of one vertical cooling water tank was tried, but in such a conventional vertical cooling water tank, a sufficient cooling effect cannot be expected, and eventually the vertical cooling water tank becomes huge, There was a problem that it was difficult to achieve the original purpose of reducing the installation area.

The present invention has been made in view of the above circumstances, and provides a wire coating device having a high processing capacity, which is provided with a composite vertical cooling device and which enables a reduction in the installation occupation area and a high-mix low-volume production. With the goal.

[0008]

In order to achieve the above object, an electric wire coating device provided with a composite vertical cooling device according to the present invention is an electric wire coating means for coating a conductor to form a coated electric wire, and the coated electric wire. A first cooling means having a water passage through which the vertical passage can pass, a narrowing means disposed at the lower end of the first cooling means, and a cooling through which the covered electric wire passing through the first cooling means can pass in the vertical direction. Second cooling means for storing water,
An electric wire supporting and moving means for supporting the conductor and the covered electric wire on the constituent members of the respective means in a non-contact manner and moving the electric wire in the vertical direction. It is characterized in that the device is configured.

Alternatively, the first cooling means and the second cooling means
The cooling means is arranged in the same container. Further, the electric wire coating means is an extruder,
The first cooling means is a first cooling tank, the narrowing means is a nozzle, the second cooling means is a second cooling tank, and the wire supporting and moving means is a first roller and a first pulley. Is characterized by. Alternatively, the first cooling means is arranged between the first roller and the first pulley, and wire holding means for holding the covered wire in the vertical direction is provided between the first cooling means and the first pulley. It is characterized by having done.

Further, it is characterized in that a traction means for tracting the covered electric wire coming out of the second cooling means is provided. Further, the first pulley is a large-diameter pulley that winds the covered electric wire passing through the first cooling means in a peripheral groove, and at least a part of the first pulley is used for cooling water stored in the second cooling means. It is characterized in that it is immersed and rotatable.

Further, the invention is characterized in that the covered electric wire is immersed in the second cooling tank a plurality of times and passed therethrough to be cooled. Further, it is characterized in that the water that has passed through the first cooling tank is injected into the second cooling tank. Alternatively, the third
It is characterized in that the water that has passed through the cooling means is injected into the second cooling tank. In addition, a cooling water cooler that is provided in parallel with the second cooling tank and that recirculates to the second cooling tank after extracting and cooling the cooling water stored in the second cooling tank is provided. Further, it is characterized in that the water that has passed through the first cooling tank is discharged to the outside of the composite vertical cooling device without being injected into the second cooling tank.

[0012]

In the wire coating apparatus equipped with the composite vertical cooling device according to the present invention, the conductor is first subjected to the hot melt coating process by the extruder, and the high temperature coated wire immediately after the hot melt coating process is first subjected to the composite vertical cooling. It is introduced from above the first cooling tank extending vertically in the apparatus so as not to contact the wall portion of the first cooling tank. Then, the high-temperature covered electric wire is cooled in the process of moving downward in the water column in the first cooling tank, and is led out to the second cooling tank side at the bottom of the device from the opening of the nozzle provided at the lower end. Further, also in the second cooling tank at the bottom of the apparatus, the covered electric wire is moved vertically in the water tank to continue cooling.
Further, also by the third cooling means, the covered electric wire extended in the vertical direction is cooled by the jetting or dropping of water. That is, the cooling of the high-temperature covered electric wire is performed in the vertical movement of the electric wire. With this configuration,
The wires are routed vertically with minimum force according to gravity without bending, so that strong wire traction is not required. Therefore, a strong force is not applied to the covering portion that has not been sufficiently cooled and fixed, so that the covering portion is not deformed. Despite the smaller space, the high-temperature coated electric wire is effectively cooled, so that a highly efficient cooling effect using the vertical cooling water tank is realized.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, the configuration of each part of the electric wire coating device provided with the composite vertical cooling device according to the present invention will be described, and then the actions thereof will be described. FIG. 1 is a cross-sectional view showing the overall configuration of an embodiment of an electric wire coating device including a composite vertical cooling device according to the present invention.

In FIG. 1, the electric wire coating device 1 equipped with the composite vertical cooling device has a supply drum 35 around which a conductor 36 is wound.
, The first roller 33 for guiding the conductor 36, and the resin material 3
An extruder 30 having a vertical crosshead 31 for coating a hopper 32 in which 8 is charged and stored and a conductor 36 is provided. The extruder 30 is an example of an electric wire coating means. In addition, from the outlet at the lower end of the extruder 30, downwardly, the covered electric wire 4 discharged from the extruder 30
An external measuring instrument 37 for checking the outer diameter of 0 is provided.
Further, the composite vertical cooling device 2 for cooling the covered electric wire 40
And a water remover 11 for introducing and drying the covered electric wire wet from the composite vertical cooling device 2 in the cooling water, and a second roller 34 for guiding the dried covered electric wire.

FIG. 2 is a partially cutaway perspective view of the composite vertical cooling device 2. In the figure, the composite vertical cooling device 2 is a rectangular parallelepiped container, and a vertically-arranged cylindrical (circular tubular) container is provided with a water reservoir for passing the covered electric wire 40 therein.
Of the first cooling tank 3 (first cooling means), a nozzle 3A (narrowing means) arranged at the lower end of the first cooling tank 3, and a cooling water 4A formed below the first cooling tank 3. A second cooling tank 4 (second cooling means) for storing water, a large-diameter first pulley 6 and a relatively small-diameter second pulley 7 which are concentric and at least partially immersed in the cooling water 4A; A third pulley 8 having a diameter substantially the same as that of the second pulley 7 is provided so as to be opposed to the upper side of the pulley. Further, a shower 9 (third cooling means) for spraying cooling water from above the container to the pulleys 6 and 7 in the container and the covered electric wire 40 engaged with the pulleys 6 and 7 is provided. Here, the first cooling tank 3 is a first cooling means, the nozzle 3A is a narrowing means, and the second cooling tank 4 is a second cooling means.

The first cooling tank 3 is a cylindrical body which is vertically raised, and a cooling water supply pipe 10 is attached to a vertical wall approximately in the center in the axial direction to supply water. As a result, the first cooling tank 3 is provided. A water reservoir is formed inside. The second cooling tank 4 is formed integrally with the container with the lower bottom portion of the container forming the composite vertical cooling device 2 as a tank wall. Therefore, the shafts of the first pulley 6 and the second pulley 7 are supported by the vertical wall of the container forming the composite vertical cooling device 2. The second cooling tank 4 can also be formed as a rectangular parallelepiped tank having an open upper end, separately from the container forming the composite vertical cooling device 2. In the case of this separate structure, a rectangular parallelepiped tank is arranged at the bottom of the container of the composite vertical cooling device 2. Thus, in this embodiment, the first cooling tank 3 and the second cooling tank 4 are arranged in the same container.

The nozzle 3A arranged at the bottom of the first cooling tank 3 has openings at the upper and lower ends thereof having a diameter larger than that of the covered electric wire to be inserted. It is desirable that the nozzle 3A has a configuration capable of supporting electric wires of various diameters in order to have compatibility with various types of small-quantity production. FIG. 3 shows an example of a nozzle having such a configuration, and the nozzle is constructed by laminating a plurality of nozzle plates. In the figure, the nozzle 3A has a lower end opening 4
3B to the upper end opening 42B, the lower end opening 4 is provided on the nozzle plate 41B having the nozzle hole 44B whose diameter is gradually narrowed.
A nozzle plate 41A having a nozzle hole 44A whose diameter gradually decreases from 3A toward the upper end opening 42A is superposed. Here, the diameter of the upper end opening 42B of the nozzle plate 41B and the nozzle plate 4
The diameter is equal to that of the lower end opening 43A of 1A.

When a thick electric wire is inserted, the nozzle plate 41A located above is removed, and when a thin electric wire is inserted, the nozzle plate 41A is attached on the nozzle plate 41B. The nozzle plate 41A is attached to the nozzle plate 41B by screwing a screw 49 into the screw hole 48A of the nozzle plate 41A and the screw hole 48B of the nozzle plate 41B. In this way, by adopting a nozzle configuration in which a plurality of nozzle plates having different opening diameters are combined, it is possible to correspond to an electric wire having an arbitrary thickness.

Returning to FIG. 1, the first roller 33 is paired with a first pulley 6 which will be described later, and supports the conductor 36 and the covered electric wire 40 without contacting the extruder 30 and the constituent members of the first cooling tank 3. It constitutes an electric wire support moving means for moving. Further, the pulling means for pulling the covered electric wire 40 is realized by a motor with a pulley, and is configured to pull the covered electric wire 40 coming out of the second cooling tank 4. In this embodiment, as shown in FIG. 2, the third pulley 8 with the motor 12 is a pulling means for pulling the covered electric wire 40. Alternatively, as shown in FIG. 1, the second roller 34 with the motor 39 may be configured as the pulling means. The motor may be added with a speed reducer, a rotation speed adjusting mechanism, or the like.

The second cooling tank 4 is provided with a plurality of outlets 5 on its side portion at different positions in the vertical direction in sequence. The second cooling tank 4 has a cooler 15 as a cooling water cooler.
(See FIG. 2) may be installed side by side.

The above-mentioned constitutions of the respective means for forming the electric wire coating device provided with the composite vertical cooling device according to the present invention are merely examples, and the present invention is not limited to the constitutions.

Next, the operation of each of the above means and parts will be described.
In FIG. 1, the conductor 36 fed from the supply drum 35
Is sent to the crosshead 31 of the extruder 30 via the first roller 33. The extruder 30 sends the pellets or powder of the thermoplastic resin material 38, which is input from the funnel-shaped hopper 32, to the crosshead 31. In the cross head 31, the outer periphery of the introduced conductor 36 is coated with a molten resin, and the excess resin is scraped off to form a molded wire. And sends it to the composite vertical cooling device 2 below.

In the composite vertical cooling device 2, the covered electric wire 40 is arranged as follows for cooling. The covered electric wire 40 coming out of the extruder 30 enters from the upper end of the first cooling tank 3 in a non-contact manner, passes through the nozzle 3A in a non-contact manner, and is wound around by the peripheral edge of the large-diameter first pulley 6 to form the first pulley. 6 around the periphery, then around the periphery of the third pulley 8, and further around the periphery of the second pulley 7, and discharged from the hole in the ceiling of the composite vertical cooling device 2.

That is, the conductor 36 is positioned in the vertical crosshead 31 by the first roller 33 which is a downward guide of the conductor 36 and the first pulley 6 which is an upward guide of the covered electric wire 40. The coated electric wire 40 in the first cooling tank 3 is positioned. This allows the conductor 36
It is possible to prevent the covered electric wire 40 from touching the vertical crosshead 31 and the wall of the first cooling tank 3.

Next, the operation of the composite vertical cooling device 2 will be described. The high-temperature coated electric wire 40 immediately after the hot-melt coating process is first erected vertically in the composite vertical cooling device 2 and introduced from above the vertically extending first cooling tank 3 so as not to contact the wall portion. . Then, the high-temperature coated electric wire 40 moves downward in the water reservoir in the first cooling tank 3, is cooled in this process, and is drawn out by being drawn to the first pulley 6 from the opening of the nozzle 3A provided at the lower end portion. It The water in the first cooling tank 3 becomes an overflow 3B from the upper end and flows down, or the nozzle 3A at the lower end.
Underflow 3C flows out from the gap formed by the opening of the above and the covered electric wire 40. Also in the process of flowing the outflow water, heat is exchanged between the water and the covered electric wire 40 moving downward, and the covered electric wire 40 is cooled. Overflow 3
In either case of B and underflow 3C, the cooling water 4A of the second cooling tank 4 formed at the bottom of the container of the composite vertical cooling device 2 joins.

The covered electric wire 40 pulled by the first pulley 6 is
The cooling water 4A is immersed in the cooling water 4A in the second cooling tank 4 at the bottom of the apparatus, and while cooling, further circulates the peripheral groove of the first pulley 6 to obtain the cooling water 4A.
While turning 360 degrees from the inside, it rises in the vertical direction toward the upper third pulley 8 facing the vertical direction. Then, it goes around the peripheral groove of the third pulley 8 and is further cooled by the water jetted from the shower 9 in this process. After this, the covered electric wire 40 is pulled by the second pulley 7 located below and covered with the cooling water 4A again. The covered electric wire 40 goes around the peripheral groove of the second pulley 7 while being cooled again in the cooling water 4A, rises in the vertical direction while being turned by 360 ° from the inside of the cooling water 4A, exits the combined vertical cooling device 2, and moves upward. To the water remover 11.

As described above, in the combined vertical cooling device 2, the covered electric wire 40 is cooled while vertically descending in the first cooling tank 3, and is further cooled in the second cooling tank 4 while moving vertically. Will continue. Further, the water ejected from the shower 9 also wets the covered electric wire 40 which is vertically extended between the third pulley 8 and the second pulley 7, so that the cooling is performed here. That is, the cooling of the coated electric wire 40 having a high temperature is repeatedly performed in the vertical movement of the coated electric wire 40.

Here, the pulling means for pulling the covered electric wire is
Since it is configured to pull the covered electric wire 40 coming out of the second cooling tank 4, there is no slack in the electric wire or non-tuning in the middle of the electric wire. In addition, the first pulley 6 that first introduces the covered electric wire 40 into the second cooling tank 4 is not driven, so that slack or non-synchronization of the electric wire does not occur. In addition, the covered electric wire 40 is
Since the diameter of the first pulley 6 that is first introduced into the cooling tank 4 is large as described above, the curvature applied to the electric wire is gentle, so that the electric wire is not cracked or cracked.

The water ejected from the shower 9 is the second
Since the cooling water 4A is added to the cooling water 4A, the temperature of the cooling water 4A can be maintained at a relatively low temperature. Incidentally, instead of the shower 9 which is the third cooling means, the covered electric wire is passed through the water tank of the hollow housing having the nozzle portion below, or a large number of small holes are formed on the bottom surface of the hollow housing while passing the covered electric wire. Alternatively, it may be dropped (spontaneously dropped) as a shower on the pulley.

By the way, when any of the plurality of outlets 5 provided at different positions in the longitudinal direction of the side of the second cooling tank 4 is opened, the cooling water is at the bottom of the opened outlets. It is discharged from things. Therefore, the water level in the second cooling tank 4 can be defined by the outlet that opens. With this configuration, it is possible to form a water column having a depth suitable for the amount of heat to be removed from the covered electric wire to be cooled.

The cooler 15 provided in the second cooling tank 4 is provided with the cooling water 4 whose temperature has risen due to the cooling of the covered electric wire.
A is extracted by the extraction pipe 5A, cooled, and returned through the injection pipe 5B, whereby the temperature of the cooling water 4A in the second cooling tank 4 is maintained at a predetermined temperature. Thus, in this embodiment, the cooling water circulation path is configured. With this configuration, the batch type operation can be performed even in a place where the cooling water cannot be constantly replenished, and the applicable range is further expanded.
Further, the cooler 15 sends out the cooling water 4A extracted by the extraction pipe 5A from the outlet 5C to a wastewater treatment device (not shown) if the cooling water 4A is in a state of being contaminated due to elution of a resin filler, a plasticizer or the like. You can also

The coated electric wire 40 cooled in the composite vertical cooling device 2 as described above and having the coating solidified and fixed is shown in FIG.
As shown in FIG. 4, the combined vertical cooling device 2 is removed to be introduced into the upper water remover 11, and the coated electric wire 40 dried by the water remover 11
Is collected by a covered wire winder (not shown) via the second roller 34 driven by the motor 39.

FIG. 4 is a perspective view showing another structure of the first cooling tank of FIG. In the figure, a dish-shaped drain tray 45 is provided at the lower end of the hollow tubular first cooling tank 3, and
The drainage pipe 47 is attached to the 5 side part. The water flowing into the first cooling tank 3 through the cooling water supply pipe 10 is heated by coming into contact with the high-temperature covered electric wire 40 and overflows 46 from the upper part of the first cooling tank 3.
It becomes A, flows down, collects as high temperature water 46B on the drainage tray 45, and is drained from the drainage pipe 47. As described above, in the configuration of the present embodiment, unlike the configuration of FIG. 1, the high-temperature water that has passed through the first cooling tank 3 is not injected into the second cooling tank 4 and is discharged to the outside of the composite vertical cooling device 2. Since the configuration is such that the cooling water temperature can be easily controlled, and the heat removal amount can be easily controlled.

FIG. 5 is a sectional front view of another embodiment of an electric wire coating device having a composite vertical cooling device according to the present invention.
In the figure, a wire coating device 1A equipped with a composite vertical cooling device.
Has a substantially pentagonal hollow casing as the first cooling tank 13,
It forms a puddle. A part of the water injected from the water supply pipe 10 into the first cooling tank 13 comes into contact with the high-temperature covered electric wire 40 to be vaporized, but most of the water naturally flows down from the opening 13A at the lower end of the first cooling tank 13. To do. Here, the water flowing out from the opening 13A will flow down along the surface of the covered electric wire 40 that also passes through the first cooling tank 13 and moves downward, and in this process as well, Heat is transferred between them, and the effect of further cooling the covered electric wire 40 is produced. The water thus flowing down is stored in the second cooling tank 4.

An electric wire holding means G1 for holding the covered electric wire 40 in the vertical direction is provided in the middle of the path of the covered electric wire 40 from the first cooling tank 13 to the first pulley 6. The electric wire holding means G1 is composed of, for example, two rotatable rollers, a pinch roller arranged in contact with the left and right, and a plurality of guide pulleys. The action of the electric wire holding means G1 is that the position of the covered electric wire 40 defined by the upper first roller 33 and the lower first pulley 6 is, for example, from the perfect circle of the large diameter first pulley 6 as described above. It regulates the lateral movement due to the eccentricity. Further, the motor 14 that pulls the covered electric wire is connected to the second pulley 7.
Therefore, the motor 14 connects the conductor 36 to the supply drum 3
Pull from 5 to the second pulley 7 all at once. The covered electric wire downstream from the second pulley 7 is wound by a winding means (not shown). Further, the upper third pulley 8 is arranged in the container at the same height as the first cooling tank 13 and side by side with the first cooling tank 13.

[0036]

As described above, in the electric wire coating apparatus equipped with the composite vertical cooling device according to the present invention, the conductor is first subjected to the hot melt coating by the extruder. Further, the high-temperature coated electric wire immediately after the heat-melt coating is introduced from above the first cooling tank extending vertically inside the composite vertical cooling device so as not to come into contact with the wall of the first cooling tank. Cooling is performed in the process of moving the inside of the water reservoir downward. After this, it is led out to the second cooling tank side from the opening of the nozzle provided at the lower end. Further, also in the second cooling tank, the coated electric wire is moved vertically in the water tank while continuing cooling. As described above, in the present invention, the cooling of the high-temperature coated electric wire is repeatedly performed in the vertical movement of the electric wire.

As a result of this structure, the installation area can be saved, the cooling efficiency can be reduced, the equipment cost and the operating cost can be reduced, and the production conditions can be easily changed to effectively cope with the small-lot production of a wide variety of products. Further, it becomes possible to provide an electric wire coating device that is easy to move. Moreover, according to the present invention, most of the movement of the electric wire is vertical and vertical movement in the vertical direction. That is, the electric wire is pulled and moved vertically,
In addition to the reduction of the operation cost, there is an effect that not only the electric wire is not deformed but the quality of the product is excellent, but also the quality control cost can be significantly reduced, and thus the industrial effect is extremely large. .

[Brief description of drawings]

FIG. 1 is a cross-sectional front view of an embodiment of an electric wire coating device including a composite vertical cooling device according to the present invention.

FIG. 2 is a partially cutaway perspective view of the composite vertical cooling device shown in FIG.

FIG. 3 is an exploded perspective view of the nozzle shown in FIG.

FIG. 4 is a perspective view showing another configuration of the first cooling tank shown in FIG.

FIG. 5 is a sectional front view of another embodiment of the electric wire coating device including the composite vertical cooling device according to the present invention.

FIG. 6 is a cross-sectional view of a wire coating device using a conventional vertical and horizontal juxtaposed cooling water tank.

[Explanation of symbols]

 1 Wire Covering Device 2 Composite Vertical Cooling Device 3 First Cooling Tank (First Cooling Means) 3A Nozzle 3B Overflow 3C Underflow 4 Second Cooling Tank (Second Cooling Means) 4A Cooling Water 5 Outlet 6 First Pulley 7th 2 pulley 8 3rd pulley 9 shower (third cooling means) 10 cooling water supply pipe 10A, 10B valve 11 water remover 12 motor (traction means) 30 extruder 31 crosshead 32 hopper 33 first roller 34 second roller 35 supply Drum 36 Conductor 37 External measuring instrument 38 Resin material 39 Motor 40 Coated electric wire

Claims (11)

[Claims] 1. An electric wire covering means for covering a conductor to form a covered electric wire, a first cooling means having a water pool through which the covered electric wire can pass in a vertical direction, and a first cooling means provided at a lower end of the first cooling means. The narrowing means, the second cooling means that stores cooling water through which the covered electric wire passing through the first cooling means can pass in the vertical direction, and the conductor and the covered electric wire are supported in a non-contact manner with the constituent members of the respective means. And a wire supporting moving means for vertically moving the first cooling means and the second cooling means.
An electric wire coating device having a composite vertical cooling device, characterized in that a composite vertical cooling device is provided with cooling means. 2. The electric wire coating device having a composite vertical cooling device according to claim 1, wherein the first cooling means and the second cooling means are arranged in the same container. 3. The electric wire coating means is an extruder,
The first cooling means is a first cooling tank, the narrowing means is a nozzle, the second cooling means is a second cooling tank, and the wire supporting and moving means is a first roller and a first pulley. An electric wire coating device comprising the composite vertical cooling device according to claim 1. 4. The first cooling means is arranged between the first roller and the first pulley, and the first cooling means and the first cooling means.
4. An electric wire coating device having a composite vertical cooling device according to claim 1, wherein an electric wire holding means for holding the covered electric wire in a vertical direction is provided between the pulleys. 5. An electric wire coating apparatus having a composite vertical cooling device according to claim 1, wherein the electric wire coating device comprises a pulling means for pulling the covered electric wire which has come out of the second cooling means. 6. The first pulley is a large-diameter pulley that winds a covered electric wire passing through the first cooling means in a peripheral groove, and at least a part of the first pulley is stored in the second cooling means. The electric wire coating device provided with the composite vertical cooling device according to claim 3, wherein the electric wire coating device is immersable in cooling water so as to be rotatable. 7. The electric wire coating apparatus provided with the composite vertical cooling device according to claim 3, wherein the coated electric wire is immersed in the second cooling tank a plurality of times to pass therethrough to be cooled. 8. An electric wire coating apparatus having a composite vertical cooling device according to claim 3, wherein water having passed through the first cooling tank is injected into the second cooling tank. 9. The structure according to claim 3, wherein the third cooling means is provided above the second cooling tank, and the water that has passed through the third cooling means is injected into the second cooling tank. An electric wire coating device provided with the composite vertical cooling device described. 10. A cooling water cooler, which is installed in parallel with the second cooling tank, extracts the cooling water stored in the second cooling tank, cools the cooling water, and then returns the cooling water to the second cooling tank. An electric wire coating device comprising the composite vertical cooling device according to claim 3. 11. A structure in which water that has passed through the first cooling tank is discharged to the outside of the composite vertical cooling device without being injected into the second cooling tank.
An electric wire coating device provided with the composite vertical cooling device described.