KR20040080282A - Extruding device for conform-extrusion of pfc tube and extruding method using thereof - Google Patents

Abstract

PURPOSE: An extrusion apparatus is provided to greatly improve productivity of PFC tube and substantially improve life time of the dies by adopting dies having two lines of dies tips in extrusion part and constructing coiling part as two independent coilers capable of simultaneously coiling two lines of PFC tubes, and an extrusion method using the same is provided. CONSTITUTION: The extrusion apparatus of PFC tube comprises a delivery part(100) for delivering an aluminum wire; an extrusion part(104) for extruding the delivered aluminum wire in a PFC tube shape; and a coiling part(110) for coiling the extruded aluminum wire, wherein the extrusion part comprises dies having two lines of dies tips arranged in a row, and the coiling part comprises two independent coilers for coiling the two lines of the aluminum wire at the same time, and wherein the dies are manufactured of sintered synthetic diamond, silicon nitride or zirconium based ceramic. The extrusion method of PFC tube comprises a delivery step of delivering an aluminum wire; an extrusion step of extruding the delivered aluminum wire in a PFC tube shape; and a coiling step of coiling the extruded aluminum wire, wherein the extrusion step is performed by passing the aluminum wire through dies having two lines of dies tips arranged in a row so that two lines of the aluminum wire are simultaneously extruded in a PFC tube shape, and the coiling step is performed by simultaneously coiling the extruded two lines of aluminum wire through two independent coilers.

Description

Extrusion apparatus for conform extrusion of PFC tube and extrusion method using same {EXTRUDING DEVICE FOR CONFORM-EXTRUSION OF PFC TUBE AND EXTRUDING METHOD USING THEREOF}

The present invention relates to an extrusion apparatus for conform extrusion of a PFC tube and an extrusion method using the same. In particular, in an extrusion apparatus composed of a delivery unit, an extrusion unit and a winding unit for aluminum wire, two lines of dies are formed in the extrusion unit. By adopting a die having a tip, the winding unit is constituted by two independent winding machines capable of simultaneously winding two rows of PFC tubes, thereby greatly improving the productivity of the PFC tube and at the same time significantly increasing the life of the die. It relates to an extrusion apparatus that can be improved and an extrusion method using the same.

PFC tube is a component used in heat exchangers of automobiles, and utilizes light weight, high sensitivity, and high thermal conductivity of aluminum to reduce fuel efficiency of transportation equipment such as automobiles, and to obtain high thermal efficiency. do.

In manufacturing such a PFC tube, an extrusion device comprising a sending part for sending aluminum wire, an extrusion part for extruding the sent aluminum wire into a predetermined shape, and a winding part for winding the extruded aluminum wire as main components. Through, it is produced by extruding the aluminum wire. In such an extrusion apparatus, the extruder includes a die for extruding aluminum wire in the shape of a PFC tube.

However, in the extrusion apparatus according to the prior art, since the die includes only one row of die tips, it is true that only one PFC tube can be produced at a time, thereby limiting productivity. Further, in the prior art, the die is mainly made of cemented carbide (CEMENTED CARBIDES, HARD METALS) bar, according to the prior art applying such a cemented carbide, in the extrusion process of the aluminum wire by the die, aluminum Due to the friction between the cemented carbide dies, there was a problem that a sharp wear of the die tip occurs, and accordingly, there is a problem that the life of the die sharply shortened, acting as a limit for improving productivity.

Hereinafter, with reference to the accompanying drawings, it will be described in more detail the problems of the conventional PFC tube extrusion apparatus and extrusion method using the same.

1 is a view showing the extrusion apparatus of the PFC tube according to the prior art and the extrusion method using the same, Figure 2 is a view showing the configuration of the extrusion unit included in the extrusion device.

As can be seen in Figure 1, the extrusion apparatus of the PFC tube according to the prior art is largely the sending unit 100 for sending the aluminum wire which is a raw material for the PFC tube manufacturing, the foreign material on the surface of the aluminum wire sent out And a washing unit 102 for washing with a base, an extrusion unit 104 for extruding the washed aluminum wire into the shape of a PFC tube, and a zinc spraying unit 106 for applying zinc to the surface of the extruded wire. And, while transporting the zinc-coated aluminum wire, it is composed of a caterpillar (108) for completing the application process of zinc and the winding unit (110) for winding the transferred result to produce a final PFC tube.

That is, when looking at the method for manufacturing the PFC tube through such an extrusion device, first, the aluminum wire is released from the sending unit 100, the aluminum wire to be sent out is washed with acid and base in the washing unit 102, the foreign matter on the surface After being removed, the washed wire is transferred to the extrusion unit 104 and extruded into the shape of the PFC tube to be finally formed by the dice included in the extrusion unit 104. Subsequently, the extruded wire is coated with zinc on the surface of the zinc sprayed part 106, and the coating process of the zinc is completed through the caterpillar 108, and then transferred to the winding part 110. By winding in the mounting, the final PFC tube is produced.

In particular, in the extrusion apparatus and extrusion method of the PFC tube according to the prior art, the productivity for the final PFC tube is determined by the process of extruding the aluminum wire in the shape of the PFC tube in the extrusion section 104, FIG. Referring to the structure of the extruded part and the extrusion method in the extruded part in detail with reference to 2, the extruded part is mainly characterized by the die 112 composed of the extruder wheel 118 and the mandrel die 120 and the extrusion die 122. Included as a component.

That is, after the foreign matter is removed from the washing unit, the wire 116 transferred to the extruder 104 is softened by the frictional force with the extruder wheel 118, and is introduced into the die chamber to be introduced into the diel die 120 and the extrusion die. While passing through 122, the aluminum wire is extruded into the shape of a PFC tube by friction between the die tip 114 of the extrusion die and aluminum.

Figure 3 is a cross-sectional view showing the structure of the die according to the prior art, Figure 4 is a view showing a state that the aluminum wire is extruded from the die according to the prior art.

As can be seen in Figure 3, the current die structure is a form in which the extrusion die 122 and the mandrel die 120 is combined, and is mainly manufactured using a cemented carbide, as described above, the aluminum wire is While passing through the mandrel dice 120 and the extrusion die 122, the extrusion is performed by friction with the die tip 114 included in the extrusion die 122.

However, as shown in FIGS. 3 and 4 above, the die 112 according to the prior art includes only one line of the die tips 114, so that only one aluminum wire 116 is extruded at a time. It is true that there is a disadvantage in that it is difficult to improve productivity, and furthermore, in the extrusion process as described above, stress is concentrated on the die tip portion of the cemented carbide alloy, so that the die tip is subjected to friction between the cemented carbide and aluminum. As the wear progresses rapidly, the die life is shortened, and in particular, when the aluminum flow rate is increased in order to improve productivity in such a die structure, the die life is further reduced, thereby increasing the productivity. will be.

Accordingly, there is an urgent need for an extrusion apparatus and an extrusion method for a PFC tube that can greatly improve the productivity of the PFC tube and at the same time improve the die life.

In order to solve the problems of the prior art as described above, the present invention is an extrusion device for a PFC tube, the extrusion unit employing a die having two rows of die tips and two that can simultaneously wound the two rows of PFC tube The present invention provides an extrusion apparatus for a PFC tube and an extrusion method using the same, by including windings composed of two independent windings, which can greatly improve the productivity of the PFC tube and at the same time significantly improve the life of the die. have.

1 is a view showing an extrusion apparatus of the PFC tube according to the prior art and an extrusion method using the same,

2 is a view showing the configuration of an extrusion unit included in the extrusion device,

3 is a cross-sectional view showing the structure of the die according to the prior art,

4 is a view showing a state that the aluminum wire is extruded from the die according to the prior art,

5 is a view showing an example of an extrusion apparatus for a PFC tube and an extrusion method using the same according to the present invention,

6 is a view showing a state in which the aluminum wire is extruded from the die according to the present invention.

Explanation of symbols on the main parts of the drawings

100: transmitting unit 102: washing unit

104: extruded portion 106: zinc sprayed portion

108: caterpillar 110: winding

112: dice 114: dice tips

116: aluminum wire

In order to achieve the above object, the present invention is a transmission unit for transmitting the aluminum wire (100); An extrusion unit 104 for extruding the sent aluminum wire into the shape of a PFC tube; And a winding unit 110 for winding the extruded aluminum wire, wherein the extrusion unit 104 has a die 112 having two rows of parallel dice tips 114. ), And the winding unit 110 provides an extrusion apparatus for a PFC tube, characterized in that it comprises two independent winding machines, so as to simultaneously wound two rows of aluminum wire.

In addition, the present invention is a sending step for sending the aluminum wire; An extrusion step of extruding the sent aluminum wire into the shape of a PFC tube; And a winding step of winding the extruded aluminum wire, wherein in the extrusion step, the aluminum wire is passed through a die having two rows of parallel dice tips, so that the two rows of aluminum The wire is simultaneously extruded into the shape of a PFC tube, and the winding step provides a method for extruding a PFC tube, characterized by simultaneously winding the extruded two rows of aluminum wire through two independent winding machines.

That is, according to the extrusion apparatus of the PFC tube and the extrusion method using the same according to the present invention, by adopting a die having two rows of parallel die tip in the extrusion portion, two lines of aluminum wire at a time to the PFC shape It is also possible to extrude and also to simultaneously wound two rows of aluminum wires extruded at the same time with two independent winding machines, thereby greatly improving the productivity of the PFC tube. In the extrusion apparatus of the PFC tube and the extrusion method using the same according to the present invention, the die is preferably manufactured using a sintered body of synthetic diamond, silicon nitride or zirconium-based ceramic. Such a material is a material with a significantly higher hardness than the cemented carbide used as a conventional die material. By manufacturing a die from such a material, the wear of the die tip due to friction between the die tip and aluminum can be significantly reduced. Thereby, the lifetime of a die can be extended significantly.

Hereinafter, with reference to the accompanying drawings, it will be described in detail an example of the extrusion apparatus of the PFC tube and the extrusion method using the same according to the present invention. However, this is presented as an example and thereby does not determine the scope of the present invention.

5 is a view showing an example of an extrusion apparatus of the PFC tube according to the present invention and an extrusion method using the same, Figure 6 is a view showing a state in which the aluminum wire is extruded from the die according to the present invention.

As can be seen in Figure 5, the extrusion device of the PFC tube according to the present invention is also sent to the extrusion device according to the prior art 100 sending the aluminum wire that is largely a raw material for the PFC tube production, the sent out Washing unit 102 for washing foreign substances on the surface of the aluminum wire with acid and base, extrusion unit 104 for extruding the washed aluminum wire in the shape of PFC tube, applying zinc to the surface of the extruded wire Zinc spray unit 106 for transporting, the zinc-coated aluminum wire, the caterpillar 108 for completing the application process of zinc and the winding unit for winding the transported result to produce a final PFC tube ( 110).

By the way, in the extrusion device according to the present invention, unlike the extrusion device according to the prior art, the die 112 included in the extrusion unit includes two rows of parallel dice tips 114, accordingly, As can be seen in the accompanying FIG. 6, two rows of aluminum wire 116 can be extruded simultaneously into the shape of a PFC tube.

In addition, as can be seen in Figure 5, the configuration of the winding unit 110 also in the prior art, because only one line of aluminum wire is extruded from the extrusion unit 104 at a time, the winding unit 110 only with one winding machine On the other hand, in the present invention, two rows of aluminum wires 116 are simultaneously extruded from the extruded portion by the die having the two rows of parallel dice tips 114, as described above. In order to wind the aluminum wire, the winding unit is composed of two different independent winding machines.

As described above, the die, which is a characteristic part of the extrusion apparatus according to the present invention, is made of a diamond sintered body, silicon nitride, or a zirconium-based ceramic material, and the material has a very high hardness. As a result of testing by the inventors, by using a die manufactured using such a material, the wear of the die tip was significantly reduced, and the life of the die was increased by about five times. Moreover, by adopting such a die, the flow rate of aluminum was increased. Even if it does so, the die tip will not be greatly worn, which will contribute more to productivity improvement.

The structure of the die and the winding machine which become a main part of the extrusion apparatus by this invention is as above-mentioned, However, The structure of the sending part 100, the washing | cleaning part 102, the caterpillar 108, etc. which are contained in the said extrusion apparatus are shown. Since the same as the extrusion apparatus according to the prior art already known to those skilled in the art, a detailed description thereof will be omitted.

On the other hand, if you look at the method for producing a PFC tube through the extrusion apparatus according to the present invention, like the prior art, first, the aluminum wire is released from the sending unit 100 is sent out of the acid and the washing unit 102 Foreign matter on the surface is removed by washing with a base, and the washed wire is transferred to the extrusion part 104 and extruded into the shape of the PFC tube to be finally formed by the die 112 included in the extrusion part 104. . By the way, as mentioned above, in the extrusion apparatus of the present invention, two rows of aluminum wires are extruded from the extrusion section 104 at the same time.

Subsequently, the extruded two wires are simultaneously transferred to the zinc sprayed portion 106, and zinc is applied to the surface thereof, and the coating process of the zinc is completed through the caterpillar 108, while the winding 110 After being transferred to, the final PFC tube is produced by winding in a winding.

However, as described above, in the extrusion method according to the present invention, since two rows of aluminum wires are simultaneously transferred through the caterpillar 108, the two lines of wires are wound by two independent winding machines, respectively. Once this process is complete, the final PFC tube is complete.

Specific embodiments of the PFC extrusion method according to the present invention are as described above, but the rest of the process configuration and conditions are already known to those skilled in the art, specific description thereof will be omitted.

As described above, according to the extrusion apparatus of the PFC tube according to the present invention and the extrusion method using the same, at the same time two rows of aluminum wire is extruded into the shape of the PFC tube, and wound around each of the two winding machine to the final PFC tube Since it is possible to produce the PFC tube, a large productivity improvement can be achieved. Furthermore, by producing the die through a sintered body of synthetic diamond having a high hardness, the die life can be significantly extended, and By halving the stress applied to the die tip, the productivity can be further improved.

According to the present invention, in the production of the PFC tube, the productivity can be significantly improved, the life of the die can be significantly increased, and the cost can be greatly contributed.

Claims (4)

A sending unit for sending aluminum wire; An extruder for extruding the sent aluminum wire into the shape of a PFC tube; And In the extrusion device of the PFC tube comprising a winding portion for winding the extruded aluminum wire, The extruded portion comprises a die having two rows of parallel dice tips, And said winding portion comprises two independent winding machines to simultaneously wind two rows of aluminum wires. A discharging step for discharging the aluminum wire; An extrusion step of extruding the sent aluminum wire into the shape of a PFC tube; And In the extrusion method of the PFC tube comprising a winding step of winding the extruded aluminum wire, In the extruding step, the aluminum wire is passed through a die having two rows of parallel die tips, thereby simultaneously extruding two rows of aluminum wire into the shape of a PFC tube, In the winding step, the extrusion method of the PFC tube, characterized in that the winding of the extruded two rows of aluminum wire at the same time through two independent winding machine. The extrusion device of claim 1, wherein the die is manufactured by using a sintered body of synthetic diamond, silicon nitride, or a zirconium-based ceramic. The method of claim 2, wherein the die is manufactured using a sintered body of synthetic diamond, silicon nitride, or zirconium-based ceramic.