JP2001198615A - Extruding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extruding device for composite materials to which a cooling device with which the extruding direction of the composite materials is made into the same direction as the rotary shaft of a movable wheel and changing work of a die and nipple, setting of the optimum heating temperature and performance are satisfied is attachable. SOLUTION: This device is provided with the movable wheel, a die box engaged with a covering material supplying part of the surface of the outer peripheral groove and the nipple and die which are incorporated its this die box and the axes on which the core wire of the nipple and die of which are passed through is taken as the same direction as the rotary shaft of the movable wheel. This device has an exclusive stand for the die box which is engaged with the surface of the outer peripheral groove and movable forward and backward to the movable wheel, a recessed part is formed on the side of the engaging face of the exclusive stand for the die box and the die box is set in this recessed part. The cooling device and heating device are attached and, moreover, an extruded material cooling device and a core material heating device are attached to the die box.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion apparatus for producing a composite material having a core (tube or wire) provided with a coating layer on its surface, and more particularly to a continuous extrusion apparatus using a movable wheel. .

[0002]

2. Description of the Related Art An extruder using a movable wheel includes a one-wheel radial extruder shown in FIG. 2, a one-wheel tangential extruder shown in FIG. 3, and a two-wheel (tangential direction) shown in FIG. ) There is an extrusion device.

[0003] The one-wheel radial extruder of FIG. 2 has one movable wheel 110 and one movable wheel 1.
Die chamber 120 engaged with the outer peripheral groove forming surface of FIG.
And a die holder 130 set in the die chamber 120, a hydraulic jack 140 for adjusting the position of the die chamber 120, and a push roll 150 and a scraper 160 provided on the outer circumferential groove surface of the movable wheel 110. It was done. In this apparatus, a linear material is pushed in as shown by an arrow in FIG.
At 50, power is supplied by rotation of the movable wheel 110 (counterclockwise) while being pushed into the outer peripheral groove surface of the movable wheel 110. By blocking the supplied linear material in the die chamber 120, the linear material receiving the relative frictional thrust with the movable wheel 110 and the high pressure flows into the die holder 130 at a high pressure, and an arrow, that is, the movable wheel 110 from the die. Are extruded in the radial direction. This extruder is used for extruding a linear material with a predetermined cross-sectional shape.

The one-wheel tangential direction extruder shown in FIG. 3 has one movable wheel 111, a die chamber 121 provided on the outer peripheral groove forming surface of the movable wheel 111, and a core set in the die chamber 121. Hydraulic jack 141 for adjusting the position of die box 131 having a through hole and die chamber 121
And a pushing roll 151 and a scraper 161 provided on the outer peripheral groove forming surface of the movable wheel 111. In this apparatus, the core material is supplied into the die box 131 as shown by a one-dot chain line, while the linear coating material is moved while being pushed into the outer peripheral groove surface of the movable wheel by a pushing roll 151 as shown by a two-dot chain line in the drawing. Wheel 1
Supplied by 11 rotations (counterclockwise). The supplied coating material receives a relative frictional thrust with the movable wheel 111 and a high pressure by being dammed in the die chamber 121, flows into the die box 131 at a high pressure, and covers around the core material. While being extruded from the die as a composite material, the composite material is extruded in the tangential direction against the movable wheel 111.

The two-wheel (tangential direction) extruder shown in FIG.
And a die chamber 122 and a cassette die box 132 respectively engaged between the outer peripheral groove surfaces of these two movable wheels 112 and 113, and a die holder 132, a die 170 and a nipple 180 set in the cassette die box 132. It has a major configuration. In this apparatus, while the core material is passed through the nipple 180 and the die 170 as shown by a dashed line, a linear coating material is supplied to the outer peripheral groove portions of the two movable wheels 112 and 113. 112, 113
By receiving the relative frictional thrust and high pressure due to the rotation of, the coating material flowing into the cassette die box 132 at a high pressure is extruded as a composite material from the die 170 while covering the outer periphery of the core material.

[0006]

As described above, all of the conventional extruding apparatuses using movable wheels shown in FIGS. 2, 3 and 4 are extruded in a direction perpendicular to the axis of the movable wheel. In the one-wheel radial extruder of FIG. 2, since the extruding is performed in the radial direction with respect to the movable wheel, it is difficult to supply the core wire to the extruding portion of the material, which is not suitable for manufacturing a composite wire.

The one-wheel tangential direction extruder shown in FIG. 3 is suitable for extruding a composite wire, but the dies and nipples incorporated in the die box 131 are located at a distance from the entrance and exit, and the dies and nipples are incorporated. , Was difficult to remove. Further, even if an attempt is made to directly cool the dies in order to prevent seizure scratches on the surface of the dies, it is extremely difficult in terms of structure, and further improvement is required to implement an effective method.
Furthermore, when the extruded composite is cooled, a cooling device for this is complicated, and it is necessary to further improve the device to obtain satisfactory performance.

In the case of the two-wheel extruder shown in FIG. 4, in addition to having the problem of the apparatus shown in FIG. 3, receiving the frictional heat from the two wheels makes it very difficult to adjust the extruding temperature. Depending on the material, extrusion at an optimum temperature was sometimes difficult. Further, since the dies and nipples are arranged between the two wheels, the size and shape of the dies and nipples are restricted.

Therefore, an object of the present invention is to make the extrusion direction of the composite material the same direction as the rotation axis of the movable wheel,
An object of the present invention is to provide an extruder for a composite material, which can replace a nipple, set an optimum heating temperature, and attach a cooling device satisfying performance.

[0010]

According to the present invention, there is provided an extrusion apparatus comprising: a movable wheel; an outer peripheral groove surface of the movable wheel; a die box engaged with a coating material supply portion; and a nipple incorporated in the die box. And a die, and the axis through which the nipple and the core of the die pass is in the same direction as the rotation axis of the movable wheel, so that the extrusion direction of the composite material is in the same direction as the rotation axis of the movable wheel.

[0011] The movable wheel has a frame for exclusive use of a die box which can be engaged with the outer peripheral groove surface and can move forward and backward. A concave portion is formed on the engaging surface side of the frame for exclusive use of the die box. By setting the die box, it is easy to attach and detach the die box.

A cooling device and a heating device are attached to the die box, and an extruded material cooling device and a core heating device are attached to set the die box to an appropriate temperature by the extruded material. You should be able to do it.

The shaft for rotating the movable wheel may be supported by either a cantilever structure or a double-support structure. The number of grooves on the outer peripheral surface of the movable wheel may be one or two. The heating device of the die box may be either an electric heater or a flame burner. Further, the cooling of the die box may be either water cooling or air cooling, and the structure of the cooling device may be either a pipe type or a plate type as long as it can be mounted.

[0014]

FIG. 1 shows an embodiment of an extrusion apparatus according to the present invention. (A) shows the outline of the apparatus from the front, and (B) shows the main part of the apparatus in cross section. ing.

The apparatus of this embodiment comprises a movable wheel 1 and
A die box dedicated frame 9 to be engaged with the outer circumferential groove surface of the movable wheel 1, a die box 2 incorporated in the die box dedicated frame 9, a die 6 and a nipple 5 incorporated in the die box 2, Die box heating device 7, die box cooling device 8, and extruded material cooling device 14, core material heating device 15 attached to die box 2.
It is provided with. 3 is a covering material, 4 is a core wire, 10 is a scraper set on an outer circumferential groove surface of a movable wheel, 1
1 is a rotating shaft of the movable wheel, 12 is a bearing for supporting the rotating shaft 11 on the frame, 13 is a drive motor of the rotating shaft 11, and 16 is a pushing roll set on the outer circumferential groove surface of the movable wheel.

The stand 9 for die box is slidable so as to be able to advance and retreat in the direction of the arrow in the drawing, that is, the outer peripheral groove surface of the movable wheel 1. A concave portion is formed in a portion that engages with the die box 2, and the die box 2 is loaded into the concave portion.

Nipple 5 set in die box 2
And the axis through which the core wire 4 passes is the movable wheel 1.
In the same direction as the rotating shaft 11 of the first embodiment. Thereby, space can be secured before and after in the extrusion direction. The die box 2 is provided with a die box heating device 7 and a die box cooling device 8, and is provided with an extruded material cooling device 14 and a core wire heating device 15. This is because the restriction on the shape and size is reduced by securing the space as described above, and high performance can be achieved.

The method of manufacturing a composite material by the extrusion apparatus of the present embodiment configured as described above will be described.
Is supplied in parallel with the rotating shaft 11 of the movable wheel, and is heated by the heating device 15 and then passed through the nipple 5 and the die 6, while the linear coating material 3 is pushed into the outer circumferential groove of the movable wheel 1 by the pushing roll 16; Movable wheel 1 from this state
Is rotated (indicated by an arrow in the drawing; counterclockwise) to block the coating material 3 supplied by the die box 2, thereby causing relative friction between the movable wheel 1 and the coating material 3 and receiving the relative friction. The coating material 3 receives a high pressure due to the rotational thrust of the movable wheel 1, and the coating material 3 flows into the die box 2 at a high pressure and rotates around the core 4 as a composite material from the die while rotating around the core 4. Axis 11
Extruded in the same direction as. The extruded composite material is cooled and dried by the cooling device 14 and wound around a drum.

In the above manufacturing process, the extruding temperature suitable for the coating material can be set by the heating device 7 and the cooling device 8 incorporated in the die box 2. Further, the extrusion pressure is adjusted by sliding the stand 9 dedicated to the die box.

The adjustment of the coating thickness of the coating material can be changed by adjusting the setting conditions of the scraper 10 in addition to the shape of the die 6. In addition, die box 2
It can also be changed by adjusting the extrusion pressure. In that case, the pushing amount of the die box 2 is changed.

According to the extrusion apparatus of the present embodiment constructed as described above, the following effects can be obtained by setting the axis through which the cores of the nipple and the die pass in the same direction as the rotation axis of the movable wheel. it can. (1) Since the size of the die box 2 can be reduced and a space is formed before and after in the extrusion direction, there are no restrictions on the shape and size of the heating device 7 and the cooling device 8 of the die box, and an apparatus with an arbitrary performance can be obtained. Can be set. (2) The shape and size of the extruded composite cooling device 14 are not restricted, and a high-performance cooling device can be set. (3) The temperature of the die box 2 can be adjusted to a temperature suitable for the coating material, and the extrusion can be performed under optimum temperature conditions. (4) The distance of the coating material inlet of the die box 2 can be reduced, the pressure loss is small, and the yield of the coating material can be improved. (5) The amount of press-in of the die box 2 can be finely adjusted, the extrusion pressure can be easily adjusted, and the coating thickness and the adhesive strength can be finely adjusted.
(6) The tool structure such as a die box can be simplified, and each part can be made inexpensive. (7) Workability is improved, and production speed and production amount can be increased.

The above-described embodiment is generally applied to the manufacture of a composite wire having a two-layer structure in which a hard metal wire is used as a core wire and a soft metal such as copper or aluminum is coated thereon. This composite wire is applied to, for example, production of a zinc-coated AS wire (core wire: steel, inner-layer covered wire: aluminum, outer-layer covered wire: zinc) used as a lightning-resistant wire, and an aluminum-coated copper wire which is a material of a rotor bar. You can also.

Further, the present invention can be applied not only to a covered wire having a two-layer structure of metal but also to a covered wire having a structure such as metal and vinyl such as a CATV cable. In shape, it is also applicable to extrusion of composite tubing.

[0024]

As described above, according to the present invention, the extrusion direction of the composite material is set to the same direction as the rotation axis of the movable wheel, the dies and nipples are exchanged, the optimal heating temperature is set, and the cooling satisfying the performance is achieved. The intended task of providing an extrusion device for a composite material to which the device can be attached; the object can be achieved.

[Brief description of the drawings]

FIG. 1 shows an embodiment of an extrusion apparatus according to the present invention, and (A)
FIG. 2 is an explanatory front view of the apparatus, and FIG.

FIG. 2 is a front view of a conventional one-wheel radial extruder.

FIG. 3 is an explanatory front view of a conventional one-wheel tangential extrusion device.

FIG. 4 is an explanatory front view of a main part of a conventional example of a two-wheel (tangential direction) extrusion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Movable wheel 2 Die box 3 Coating material 4 Core material 5 Nipple 6 Dice 7 Die box heating device 8 Die box cooling device 9 Die box dedicated stand 10 Scraper 11 Rotary shaft 12 Bearing 13 Drive motor 14 Extruded material cooling device 15 Core material heating apparatus

Claims (3)

[Claims] An apparatus for extruding a composite material, comprising: a movable wheel and an outer peripheral groove surface of the movable wheel; a die box engaged with a coating material supply portion; and a nipple and a die incorporated in the die box. And an axis through which the cores of the nipple and the die pass in the same direction as the rotation axis of the movable wheel. 2. A frame for exclusive use of a die box, which is engaged with the outer peripheral groove surface of the movable wheel and is movable back and forth, and a concave portion is formed on an engagement surface side of the frame for exclusive use of a die box. The extrusion device according to claim 1, wherein a die box is set in the recess. 3. The extrusion device according to claim 1, wherein a cooling device and a heating device are attached to the die box, and an extruded material cooling device and a core material heating device are attached. .