KR102556154B1 - Continuous Extrusion Molding Apparatus capable of speed control - Google Patents

Abstract

The present invention melts a raw material to form a raw material molten metal, a nozzle having a supply unit for supplying the raw material molten metal, a supply passage connected to the molten metal supply unit to receive the raw material molten metal, and supplying the raw material molten metal at a constant pressure. unit, a plurality of molding flow passages through which the raw material molten metal moves and is formed continuously with the nozzle unit, and a cooling section that surrounds the circumference of the forming passage and cools the raw material molten metal from the outer surface, and extrudes the raw material molten metal to form a plurality of An extrusion molding unit that simultaneously discharges two moldings and a speed control unit disposed on the discharge path of the moldings at the rear end of the extrusion molding unit, contacting the plurality of moldings at the same time and controlling the speed so that each is transported at the same speed A continuous extrusion molding apparatus capable of speed control including is disclosed.

Description

Continuous Extrusion Molding Apparatus capable of speed control

The present invention relates to a continuous extrusion molding apparatus capable of speed control, and more particularly, to branching molten metal into a plurality of pieces using multiple nozzles during continuous extrusion molding and uniformly controlling the extrusion speed of moldings formed in each of them. It relates to a continuous extrusion molding apparatus capable of.

In general, moldings extruded using molten synthetic resin or metal materials pass through molds and sizing constituting extrusion molding equipment, and are processed into shapes and designed dimensions that are continuously extruded using the existing open mold method, and pass through a cooler. cooling takes place.

Since products molded by this method are molded in a so-called open mold, the density of the product cannot be artificially increased, so the durability of the product is inevitably relatively low.

Conventional extrusion molding equipment melts the raw material introduced through a hopper, and the melted raw material passes through a mold and then exposes it to the atmosphere to form the first shape into a desired shape, and sequentially sizing and cooling the molded product. It is being passed through so that the molding is completed.

However, in the conventional extrusion molding apparatus, molding is performed while passing through a high-temperature molding mold while continuously extruding a molded article from a mold, and the molded article passing through the molding mold is put into a cooling bath.

At this time, it is common that the molten metal injected into the mold is branched into a plurality of pieces to form a plurality of moldings at the same time.

Here, when a plurality of moldings are molded at the same time, a deviation in the pressure injected from the molding molds formed at the center and the edge where the raw material molten metal is injected occurs, and accordingly, the structure of the moldings molded in the molding mold is formed unevenly. or the problem of the difference in extrusion speed occurs.

In particular, although it depends on the material of the molding, there is a problem in that the molding of the desired quality is not molded due to uneven pressure during molding or the strength is insufficient due to a decrease in density, so that it does not function as a structural member.

The present invention is to solve the above conventional problems, by extruding a molding through a plurality of molding passages during conventional extrusion molding, and having a separate rotating roller at the rear end of the molding so that a plurality of them are simultaneously contacted and transported, It is an object of the present invention to provide a continuous extrusion molding apparatus capable of speed control capable of extruding a plurality of moldings at a uniform speed in response to the rotational speed of a rotating roller to maintain the quality of the moldings.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above problems, the speed controllable continuous extrusion molding apparatus of the present invention melts a raw material to form a raw material molten metal and is connected to a molten metal supply unit for supplying the raw material molten metal, and the molten metal supply unit to supply the raw material molten metal. and a nozzle unit having a supply passage for supplying the raw material molten metal at a constant pressure, a plurality of molding passage parts in which the raw material molten metal is continuously moved and formed with the nozzle unit, and a plurality of molding passage parts surrounding the circumference of the molding passage part to cover the outside of the raw material molten metal. An extrusion molding unit that has a cooling unit for cooling from the side and simultaneously discharges a plurality of moldings by extruding the raw material molten metal, and is disposed on the discharge path of the moldings at the rear end of the extrusion molding unit and contacts the plurality of moldings at the same time. and includes a speed control unit that controls the speed so that each is transferred at the same speed.

In addition, the speed control unit includes a plurality of rotating rollers contacting at both sides in the width direction of the molding, the molding penetrates between the rotating rollers, and the plurality of moldings are spaced apart along the longitudinal direction of the rotating roller. and can be contacted at the same time.

In addition, one rotating roller is provided on each side of the molded article in the width direction so that the molded article can pass through them at the same speed.

In addition, in the extrusion molding unit, a plurality of the molding passage parts are disposed spaced apart along a first direction to extrude the molding, and the rotating roller is disposed parallel to the first direction to contact the plurality of moldings at the same time. there is.

In addition, the molding passage portion may include an upper passage formed in plurality along the first direction in which the molded article is formed, and a plurality of lower passages formed under the upper passage along the first direction.

In addition, the rotating roller is spaced apart from each other along the width direction of the molded article discharged from the upper passage, and at the rear end of the first roller unit including a pair of the rotating rollers contacting both sides and the extrusion molding unit. It may include a second roller part including a pair of rotating rollers disposed in front or rear of the roller part and rotating in contact with both sides along the width direction of the molding discharged from the lower passage.

Also, positions of the first roller unit and the second roller unit may be independently adjusted.

In addition, the speed control unit may be configured such that the distance between the rotating rollers is adjustable in response to the width of the molding.

The speed controllable continuous extrusion molding apparatus according to the present invention having the above configuration has the following effects.

A separate rotating roller is provided at the rear end of the extrusion molding unit that extrudes the raw material molten metal and discharges the moldings so that the moldings in contact with the rotary roller are transported at the same speed by simultaneously contacting a plurality of moldings discharged from the extrusion molding unit. There is an advantage that the molded article that is molded and discharged from the extrusion molding unit can be extruded uniformly.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view schematically showing the configuration of a continuous extrusion molding apparatus capable of speed control according to the present invention;
Figure 2 is a view showing a speed control unit in the continuous extrusion molding apparatus capable of speed control of Figure 1;
Figure 3 is a view showing an extrusion molding unit in the speed controllable continuous extrusion molding apparatus of Figure 1;
Figure 4 is a view conceptually showing a state in which the speed controllable continuous extrusion molding apparatus of FIG. 1 is branched into a plurality of molding passages through a supply passage and extruded;
5 is a view showing a state in which the speed of the molded product is controlled through the first roller unit and the second roller unit in the speed control unit of FIG. 1; and
Figure 6 is a view showing a state in which the molded article is transferred in contact with the rotating roller in the speed control unit of Figure 5.

Hereinafter, a preferred embodiment of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numeral are used for the same configuration, and additional description thereof will be omitted.

The present invention relates to an apparatus for forming a molding through extrusion using a raw material molten metal in which the raw material is melted, and prevents quality degradation by maintaining the density of the raw material even if uneven shrinkage occurs during cooling of the molded product.

First, referring to FIGS. 1 to 6, a speed controllable continuous extrusion molding apparatus according to the present invention will be described as follows.

1 is a view schematically showing the configuration of a continuous extrusion molding apparatus capable of speed control according to the present invention, Figure 2 is a view showing a speed control unit in the continuous extrusion molding apparatus capable of speed control of FIG. 1, Figure 3 is It is a view showing the extrusion molding unit in the speed controllable continuous extrusion molding apparatus of FIG.

And Figure 4 is a view conceptually showing a state in which the speed controllable continuous extrusion molding apparatus of Figure 1 is branched into a plurality of molding passages through the supply passage and extruded, Figure 5 is a first roller in the speed control unit of Figure 1 6 is a view showing a state in which the molded article is transferred in contact with the rotating roller in the speed control unit of FIG. 5, respectively.

The speed controllable continuous extrusion molding apparatus according to the present invention largely includes a molten metal supply unit 100, a nozzle unit 200, an extrusion molding unit 300, and a speed control unit 400.

The molten metal supply unit 100 is configured to heat and melt the raw material (not shown) of the molding 20 to maintain it in a molten metal state and supply it with a constant pressure.

Specifically, the molten metal supply unit 100 has an inlet (not shown) into which raw material is inputted at one side, and is formed long to form the raw material molten metal 10 by heating the raw material inside.

At this time, the molten metal supply unit 100 is provided with a conveying means 110 formed in a screw shape to supply the raw material molten metal 10 at a constant pressure along the longitudinal direction.

In this embodiment, the molten metal supply unit 100 is formed long, and the raw material molten metal 10 is melted and movable therein, and communicates with the nozzle unit 200 at the end along the longitudinal direction.

Referring to the drawings, the molten metal supply unit 100 is internally disposed along the longitudinal direction of the transfer means 110, and the raw material molten metal 10 is moved by the transfer means 110.

In the present invention, various types of raw materials may be used, and the molten metal supply unit 100 is configured to adjust the heating temperature corresponding to each.

In this embodiment, the raw material is for producing a polyamide insulation bar, and among several types of polyamides, that is, PA6, PA66, P610, PA11, and PA12, PA66, which has excellent crystallization degree and excellent heat resistance, strength, moisture absorption resistance, and economy, is used. do.

Of course, not only one material but also mixed materials may be used, and in this case, they are mixed inside the molten metal supply unit 100.

Here, when the raw material uses polyamide, the molten metal supply unit 100 is configured to completely liquefy the raw material by heating to a temperature of about 250° C. or higher.

On the other hand, in the continuous extrusion molding apparatus according to the present invention, the insulation bar made of the molding 20 is generally applied to an aluminum frame for windows and doors of a building and is used for insulation and prevention of condensation.

An insulation bar is installed in the middle of the aluminum frame for windows to block heat conduction due to the temperature difference between inside and outside, thereby reducing energy loss.

In addition, since the windows of a building must be configured to withstand various external conditions such as wind pressure or temperature variations, the insulation bar coupled to the window also secures appropriate durability and strength against the positive and negative pressures that repeatedly act on the building. It must be able to maintain its function as a structural member.

As such, the molded article 20 produced through the continuous extrusion molding apparatus capable of speed control according to the present invention secures durability and strength and can be used as an insulating bar.

Meanwhile, the nozzle unit 200 is connected to the molten metal supply unit 100 to receive the raw material molten metal 10, and a supply passage 210 for supplying the raw material molten metal 10 at a constant pressure is formed.

Specifically, the nozzle unit 200 is connected to one end of the molten metal supply unit 100, and the supply passage 210 is formed therein to receive the raw material molten metal 10 therein.

Here, the nozzle unit 200 allows the raw material molten metal 10 to be supplied to the extrusion molding unit 300 to be described later, and to supply it at a constant pressure and quantity.

At this time, as shown in FIG. 1, the supply passage 210 formed in the nozzle unit 200 supplies the raw material molten metal 10 supplied from the molten metal supply unit 100 to the extrusion molding unit 300. The size of the cross section of the supply passage 210 is gradually reduced along the path.

Accordingly, the raw material molten metal 10 supplied through the nozzle unit 200 can be supplied while maintaining a pressure higher than a certain level.

In this embodiment, the nozzle unit 200 may be formed by branching the supply passage 210 into a plurality of pieces, as shown in FIG. ) may be configured to have a corresponding position and number.

In this way, in the nozzle unit 200, the supply passage 210 is formed to branch into a plurality of pieces, and each is formed so that the cross section size decreases in the vertical direction in the direction of the extrusion molding unit 300, so that the supply passage The raw material molten metal 10 supplied through 210 may be supplied at a uniform pressure.

Here, in the nozzle unit 200, a part of the supply passage 210 protrudes toward the extrusion molding unit 300 to be described later.

Specifically, looking at the drawing, the nozzle unit 200 is formed so that the outlet of the supply passage 210 formed therein protrudes to the outside, and then the extrusion molding unit coupled to the nozzle unit 200 ( 300) is connected.

Here, the protruding outlet of the supply passage 210 communicates with the inlet of the molding passage portion 310 formed in the extrusion molding unit 300 .

In this way, the outlet of the supply passage 210 protrudes and is coupled to the extrusion molding unit 300 so that the raw material molten metal 10 can be stably injected into the molding passage part 310 when supplied.

In addition, the nozzle unit 200 is provided with a separate heating means 220 inside to prevent the raw material molten metal 10 moving through the supply passage 210 from being hardened.

Specifically, the heating means 220 is formed in a shape surrounding the supply passage 210 to heat the nozzle unit 200 or the supply passage 210 . In this embodiment, since the raw material molten metal 10 is made of a polyamide material, the heating means 220 is configured to maintain a temperature of about 260 to 280°C.

On the other hand, the nozzle unit 200 may be composed of one and disposed between the molten metal supply unit 100 and the extrusion molding unit 300, or may be composed of a plurality of nozzle units and the supply passages 210 formed in each are continuously It may be arranged so as to be in communication.

In this embodiment, the nozzle unit 200 is composed of two, and the supply passage 210 is formed in each. Here, the supply passage 210 formed in each nozzle unit 200 may have a different diameter, size, cross section, etc., and accordingly, the nozzle unit 200 may be replaced and arranged by adjusting may be

In addition, since a plurality of nozzle units 200 are continuously arranged along the extrusion direction of the raw material molten metal 10, even if a part is damaged or the supply passage 210 is blocked, continuous use is possible only by replacing the corresponding part do.

That is, since the nozzle unit 200 is composed of a plurality of members, maintenance is easy and the production process can be continuously performed.

As shown in the present embodiment, the nozzle unit 200 has two upper and lower paths and is formed in the same shape to divide the raw material molten metal 10 and deliver it to the extrusion molding unit 300 .

Next, the extrusion molding unit 300 continuously cools the raw material molten metal 10 with the nozzle unit 200 and molds it at the same time, largely comprising a molding passage 310 and a cooling section 320. include

The molding passage part 310 is formed long inside the extrusion molding unit 300, and has a shape corresponding to the shape of the molding 20 and is formed long. Here, the molding passage part 310 is arranged to be continuous with the supply passage 210 formed in the nozzle unit 200, and is configured to form the molten metal 10 supplied simultaneously with movement.

As shown in FIG. 3 , the molding passage part 310 in this embodiment is formed in a plurality so that a plurality of moldings 20 can be molded at the same time. Therefore, it is preferable that the molding passage part 310 is continuously arranged to correspond to the supply passage 210 formed in the nozzle unit 200 .

Of course, unlike this, as shown in FIG. 1, the shaping passage part 310 may be configured singly. In the case of FIG. 2 of this embodiment, as an example of the extrusion molding unit 300 that can be actually used, the molding passage part 310 is composed of an upper passage 312 and a lower passage 314.

The upper flow path 312 and the lower flow path 314 consist of upper and lower parts respectively in the extrusion molding unit 300, and are spaced apart from each other along the second direction as shown. At this time, in this embodiment, as shown in FIG. 3, the upper passage 312 and the lower passage 314 have the same shape and are configured to extrude the molding 20. However, unlike this, the upper flow path 312 and the lower flow path 314 may extrude the molded article 20 in different sizes or shapes, and correspondingly, the speed control unit 400 described later may be formed. there is.

As described above, in the present invention, the shaping flow path part 310 may be configured to include the upper flow path 312 and the lower flow path 314, and additionally the upper flow path 312 and the lower flow path 314 as well as A separate additional passage (not shown) may be further formed along the second direction.

In addition, in this embodiment, the upper flow channel 312 and the lower flow channel 314 are each composed of a plurality of pieces and are formed spaced apart along the first direction crossing the second direction to extrude the plurality of moldings 20 at the same time. can be configured to do so. Here, the upper passage 312 and the lower passage 314 may be formed in plurality along the first direction, and preferably have the same shape.

That is, the shaping flow path part 310 is configured such that the upper flow path 312 and the lower flow path 314 are spaced apart along the second direction to have an independent shape, and each of the upper flow path 312 and the A plurality of lower passages 314 have the same shape and are spaced apart along the first direction.

Accordingly, the molding passage part 310 independently molds the plurality of moldings 20 in the upper passage 312 and simultaneously molds the plurality of moldings 20 in the lower passage 314 independently. In addition, the moldings 20 molded in the upper passage 312 and the lower passage 314 may be selected to have the same or different shapes.

On the other hand, the cooling part 320 is formed in a shape surrounding at least a part of the molding passage part 310 on the extrusion molding unit 300 to cool the raw material molten metal 10 passing through the molding passage part 310. Cool down.

Specifically, as shown, the cooling part 320 is formed in a shape surrounding the molding passage part 310 so that the raw material molten metal 10 is cooled within the molding passage part 310 . At this time, the cooling unit 320 cools the raw material molten metal 10 to a temperature of about 60 to 100° C. so that the molding 20 can be molded inside the molding passage 310 .

In this embodiment, as shown, the shaping passage part 310 is configured to include a plurality of the upper passages 312 and a plurality of the lower passages 314, and the cooling unit 320 is the upper passage. 312 and the lower passage 314 may be installed independently. Of course, otherwise, the cooling part 320 may be configured to surround the entire molding passage part 310 inside the extrusion molding unit 300 .

In this way, the extrusion molding unit 300 is configured, and the raw material molten metal 10 supplied through the supply passage 210 passes through the molding passage part 310 and is cooled by the cooling part 320. is molded Here, the extrusion molding unit 300 may be configured as one, similarly to the nozzle unit 200, or alternatively, a plurality of extrusion molding units 300 each having the molding passage 310 and communicating with each other may be arranged in succession.

In addition, the number of the extrusion molding units 300 may be modified or partially replaced in accordance with the shape of the molding 20 or the number of the supply passages 210 of the nozzle unit 200.

In this embodiment, a plurality of extrusion molding units 300 are provided along the path through which the raw material molten metal 10 is extruded, and are arranged so that the cooling temperature of each decreases sequentially.

Similar to the nozzle unit 200 described above, since a plurality of nozzle units are provided, it is possible to continuously use the nozzle unit by simply replacing the corresponding position in case of damage or malfunction, thereby facilitating maintenance. In addition, by selecting and disposing the extrusion molding unit 300 corresponding to the arrangement or number of the supply passages 210 formed in the nozzle unit 200, the molded article 20 can be extruded in various shapes.

As the extrusion molding unit 300 is configured in this way, the raw material molten metal 10 supplied from the nozzle unit 200 is molded and cooled in the molding passage 310 to produce a molded product 20 .

At this time, the raw material molten metal 10 introduced into the forming passage 310 is cooled and hardened by the cooling unit 320 . Here, since the molding passage part 310 has the shape of the molding 20, it is hardened in a state having a shape, and is hardened from the outer surface inside the molding passage part 310.

Accordingly, the raw material molten metal 10 is hardened in a U-shape from the portion in contact with the inner surface of the molding passage 310, and the central portion is not completely hardened by the raw material molten metal 10 continuously supplied. become a state

In general, when the molding 20 is hardened simultaneously with cooling in extrusion molding, shrinkage occurs in the process of cooling from the surface, and cooling proceeds slowly inside, so that the structure is not dense and deformation occurs.

However, as in the present invention, the raw material molten metal 10 is hardened inside the molding passage part 310 by the cooling part 320 and continuously before the raw material molten metal 10 is completely hardened ( 10) can be minimized by injecting the molded article 20 at a preset pressure, thereby minimizing shrinkage and decrease in density of the molded article 20.

Specifically, as shown in the figure, when the raw material molten metal 10 is supplied into the molding passage part 310, it moves in contact with the inner surface of the molding passage part 310 and is gradually cooled. Here, the state in which the raw material molten metal 10 is hardened in the process of being transported inside the molding passage part 310 is largely divided into a melting area (A1), a solid-liquid area (A2), a hardening area (A3), and a separation area (A4). includes

The molten region A1 is an area adjacent to the inlet of the molding passage 310, and is a region in which the raw material molten metal 10 flows into the molding passage 310 and exists in a molten state in which hardening does not occur. am.

The hardening region A3 represents a region where the raw material molten metal 10 is cooled and hardened as it moves inside the molding passage 310 . Here, the raw material molten metal 10 is hardened to form the shape of the molded product 20 and is hardened from the outer portion. However, in the curing region A3, the molded article 20 contains latent heat remaining inside and is not completely cooled.

Meanwhile, the solid-liquid region A2 is located between the melting region A1 and the hardening region A3, and the raw material molten metal 10 exists in a gel state between a hardened state and a molten state. Here, the solid-liquid region A2 is a region where the volumetric shrinkage begins as the raw material molten metal 10 is primarily hardened.

At this time, when the raw material molten metal 10 is continuously supplied to the molding passage 310 at a preset pressure, the raw material molten metal 10 is supplied to the melting region A1 to form the solid-liquid region A2 and A decrease in density of the molded article 20 due to shrinkage in the curing region A3 is reduced.

That is, when the raw material molten metal 10 is continuously supplied with a predetermined pressure into the molding passage 310, it is hardened from the outer surface of the molded article 20 in the hardening region A3 to form the molded article 20 ), even if the density decreases due to cooling, the melting area A1 and the solid-liquid area A2 located in the center are filled with the raw material molten metal 10 to reduce shrinkage and decrease in density of the molded product 20.

On the other hand, in the separation area A4, the molded article 20, which has passed through the curing area A3, is completely cured and is cooled to latent heat inside, whereby some shrinkage occurs.

Here, in the separation area A4, as the molded article 20 is completely cured, minute shrinkage occurs, and the inner surface of the molded article 20 is separated from the molded article 20, as shown.

In this way, when the molding 20 and the molding passage part 310 are separated, the molding 20 can be easily separated from the extrusion molding unit 300 .

In this embodiment, as the raw material molten metal 10 supplied into the molding passage part 310 is cooled, a minute volume shrinkage of 0.05% occurs in the melting region A1, and the molding passage part 310 The raw material molten metal 10 inside advances at a rate of about 200 to 600 cm/min.

In this way, the raw material molten metal 10, which has started to cool inside the molding passage 310, is gradually hardened, and its state changes in the order of the solid-liquid region A2, the hardening region A3, and the separation region A4. is transported through

At this time, in the raw material molten metal 10 moving along the molding passage 310, the hardening area A3 is externally cooled but contains latent heat, and the separation area A4 is completely cooled. It is a product that has been molded.

In addition, the melting area (A1) is near the inlet of the molding passage part 310, and the density is denser as the molten raw material is continuously injected at a constant pressure and pressure is applied, and the solid-liquid area (A2) is also the melting Together with the region A1, it becomes a region where the density becomes denser.

In this way, in the melting region A1, the raw material molten metal 10 moves inside the molding passage 310 and is gradually cooled at the same time as the solid-liquid region A2, the hardening region A3, and the separation region ( A4), the state is deformed in order, and the molding 20 is molded.

That is, in the molded article 20 that is cooled and molded while passing through the molding passage 310, the molten metal 10 is cooled and hardened by continuously supplying the raw material molten metal 10 with a pressure higher than a certain level to the melting area A1. Even if shrinkage of the raw material molten metal 10 occurs during the process, it is continuously supplied to prevent a decrease in the overall density of the molding 20.

Accordingly, in the case of the molded article 20 molded in this embodiment, strength and heat insulating properties are secured at the same time, and an insulating bar having a beautiful surface and precise dimensions can be manufactured.

Meanwhile, the inlet of the shaping passage 310 is disposed to correspond to the position of the outlet of the supply passage 210, and the cross section of the inlet of the shaping passage 310 is relatively larger than the outlet of the supply passage 210. formed large.

Specifically, referring to FIG. 1, it is shown as an example of the molding passage part 310, and the outlet of the supply passage 210 is located in the center of the molding passage part 310 and is formed relatively small.

Accordingly, when supplying the raw material molten metal 10 from the supply passage 210 to the forming passage 310, the raw material molten metal 10 is continuously supplied to the center of the molding 20 to prevent shrinkage. can be minimized.

In this embodiment, the inlet of the shaping passage 310 is formed relatively larger than the outlet of the above-described supply passage 210, and a part of the protruding supply passage is configured to be inserted.

Accordingly, the forming passage 310 and the supply passage 210 are stably communicated with each other, and the raw material molten metal 10 is continuously supplied from the center of the melting region A1 to the center.

As such, since the outlet of the supply passage 210 is disposed at the center of the forming passage 310, the raw material molten metal 10 can be supplied to the melting region.

Next, the speed control unit 400 according to the present invention is provided on the moving path of the plurality of moldings 20 molded through the extrusion molding unit 300, each of the moldings 20 It is controlled to be transferred at the same speed by contacting at the same time.

Specifically, the speed control unit 400 includes a plurality of rotating rollers 402, is configured to be rotatable at the rear end of the molding 20, and the rotating roller 402 is spaced apart from the molding ( 20) is transferred in contact. At this time, a plurality of the molded articles 20 are formed and arranged to have a uniform width, and each of them simultaneously contacts the outer surface of the rotary roller 402 so that the rotary roller 402 rotates and is discharged at a uniform speed. do.

That is, the speed control unit 400 is configured to simultaneously contact and rotate the plurality of moldings 20 at both ends along the width direction at the rear end from which the moldings 20 are discharged, thereby contacting the rotating roller 402. A plurality of the moldings 20 are moved at the same speed.

At this time, the rotary roller 402 may include a slip prevention part 402a in the form of a separate coating or pattern on the surface along the circumference, and the molded article 20 in contact with the rotary roller 402 is slip-resistant. prevent it from happening As shown, the anti-slip part 402a is formed in a pattern shape and contacts both sides of the molding 20 in the width direction, respectively, and is configured to prevent slip by increasing friction. However, unlike this, a separate coating or It may also be formed in the form of a combination of rubber members.

Therefore, during continuous extrusion molding by the speed control unit 400, the molten metal is branched into a plurality of pieces using multiple nozzles and uniformly controls the extrusion speed of the moldings 20 formed in each, thereby reducing defects in the moldings and At the same time, uniform quality can be maintained.

In the present invention, the speed control unit 400 includes a plurality of rotary rollers 402 and includes a housing 410 supporting each of the rotary rollers 402 to be rotatable, and the rotary rollers 402 It is configured to be spaced apart with a predetermined interval and rotate independently. Here, as described above, the shaping passage part 310 is configured to include an upper passage 312 and a lower passage 314, and correspondingly, the speed control unit 400 discharges from the upper passage 312. It includes a first roller part 420 in contact with the molding 20 and a second roller part 430 in contact with the molding 20 discharged from the lower passage 314.

Specifically, as shown in FIG. 5 , the speed control unit 400 includes the first roller part 420, the second roller part 430, and the housing 410, and the housing 410 ) The first roller part 420 and the second roller part 430 are disposed in the inner passage, respectively, and the molded article 20 passes through and is transported.

In the first roller unit 420, a pair of rotation rollers 402 are spaced apart from each other in a second direction, and each rotation roller 402 extends along the first direction. At this time, the first direction is a direction in which the molding 20 discharged from the upper flow passage 312 is separated, and the second direction is a direction in which the upper passage 312 and the lower passage 314 are separated. .

And the first roller unit 420 includes a first frame supporting the rotation axis of each of the pair of rotation rollers 402 and arranged in parallel to maintain a gap, the first frame is the housing ( 410) It is configured to support the pair of rotation rollers 402 inside and at the same time adjust the position of the first roller unit 420.

Here, in the first roller unit 420, the rotating roller 402 supported by the first frame is disposed parallel to the first direction, and the plurality of moldings 20 discharged from the upper passage 312 ) at the same time. Accordingly, all of the moldings 20 discharged from the upper passage 312 contact the first roller unit 420 and are transported at the same speed.

Meanwhile, the second roller unit 430 is formed in a similar shape to the first roller unit 420 and includes a rotation roller 402 separate from that included in the first roller unit 420 . Specifically, the second roller unit 430 includes a second frame supporting the pair of rotating rollers 402 and, unlike the first roller unit 420, is disposed at the rear end of the lower passage 314. This allows the molding 20 to pass between the rotating rollers 402.

Here, the rotating rollers 402 included in the second roller unit 430 are also configured as a pair and are spaced apart from each other, and are configured to contact the plurality of moldings 20 at the same time as each is formed long along the first direction. do.

Accordingly, the second roller unit 430 also simultaneously contacts the plurality of moldings 20 discharged through the lower passage 314 and moves at the same speed.

In this way, the extrusion molding unit 300 includes the rotating roller 402 that simultaneously contacts the plurality of moldings 20 discharged from the extrusion molding unit 300, and contacts the rotating roller 402. By allowing the moldings 20 to be transported at the same speed, the moldings 20 molded and discharged from the extrusion molding unit 300 can be uniformly extruded.

At this time, each of the rotary rollers 402 included in the first roller part 420 and the second roller part 430 is arranged in parallel with a spacing corresponding to the width of the molding 20 and is independent. rotates, and the spacing is configured to be adjusted in response to the width of the molding 20.

As described above, the continuous extrusion device according to the present invention includes the molten metal supply unit 100, the nozzle unit 200, the extrusion molding unit 300 and the speed control unit 400, and the extrusion molding unit ( 300), the rotating rollers 402 contact each other at both sides in the width direction of the plurality of moldings 20 discharged, thereby making the ejection speed of the moldings 20 uniform.

In response to the number and arrangement of the moldings 20 discharged from the upper passage 312 and the lower passage 314, the rotating roller 402 independently operates the first roller unit 420 and the first roller unit 420. Each of the two-roller unit 430 is disposed, and a pair of rotating rollers 402 are in contact with both sides of the plurality of moldings 20 in the width direction, so that one of the rotating rollers 402 is formed in the upper passage. 312 and the molded object 20 discharged from the lower passage 314 may be contacted to prevent interference from occurring.

As described above, the preferred embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope of the present invention in addition to the above-described embodiments is known to those skilled in the art. It is self-evident to them. Therefore, the embodiments described above are to be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may vary within the scope of the appended claims and their equivalents.

100: molten metal supply unit
110: transport means
200: nozzle unit
210: supply passage
220: heating means
300: extrusion molding unit
310: molding flow path
320: cooling unit
400: speed control unit
410: housing
420: first roller unit
430: second roller unit
A1: melting area
A2: high amount area
A3: Curing area
A4: Separation area
10: raw material molten metal
20: molding

Claims (8)

a molten metal supply unit that melts a raw material to form a raw material molten metal and supplies the raw material molten metal;
a nozzle unit connected to the molten metal supply unit to receive the raw material molten metal and having a supply passage through which the raw material molten metal is supplied at a constant pressure;
It has a plurality of molding flow passages in which the raw material molten metal moves and is formed continuously with the nozzle unit, and a cooling section for cooling the raw material molten metal from the outer surface of the raw material molten metal by surrounding the circumference of the molding passage, and extruding the raw material molten metal to form a plurality of molded products. An extrusion molding unit that simultaneously discharges; and
a speed control unit disposed on the discharge path of the molded article at the rear end of the extrusion molding unit, contacting a plurality of the molded articles at the same time, and controlling a speed so that each of the molded articles is transported at the same speed; Including,
The speed control unit includes a plurality of rotating rollers contacting at both sides in the width direction of the molding, the molding penetrates between the rotating rollers, and the plurality of moldings are spaced apart along the longitudinal direction of the rotating roller contact at the same time
In the extrusion molding unit, a plurality of the molding passage parts are arranged spaced apart along a first direction to extrude the molding,
The rotating roller is disposed in parallel with the first direction to contact a plurality of the moldings at the same time, and includes a slip prevention part in the form of a separate coating or pattern on a surface along the circumference to prevent the molding from slipping with the rotating roller. Maintaining a uniform speed by suppressing
The speed control unit includes a first roller part, a second roller part and a housing, and the first roller part and the second roller part are respectively disposed inside the housing so that the molding passes through,
The first roller unit includes a first frame supporting the rotation axis of each of the pair of rotation rollers and being disposed in parallel to maintain a gap therebetween,
The first frame is configured to support the pair of rotation rollers inside the housing and at the same time adjust the position of the first roller unit.
delete According to claim 1,
The rotating roller,
Continuous extrusion molding apparatus provided with one on each side of the molding in the width direction so that the molding passes through them at the same speed.
delete According to claim 1,
The molding passage part,
a plurality of upper passages along the first direction in which the molding is molded; and
a plurality of lower flow passages formed under the upper flow passage along the first direction;
Continuous extrusion molding apparatus comprising a. According to claim 5,
The rotating roller,
a first roller unit including a pair of rotating rollers spaced apart from each other along the width direction of the molded article discharged from the upper passage and contacting both sides; and
A second roller unit including a pair of rotating rollers disposed in front or rear of the first roller unit at the rear end of the extrusion molding unit and contacting both sides of the rotating roller along the width direction of the molding discharged from the lower flow passage to rotate;
Continuous extrusion molding apparatus comprising a. According to claim 6,
The first roller unit and the continuous extrusion molding apparatus in which the positions of the second roller unit are independently adjusted. According to claim 1,
The speed control unit,
Continuous extrusion molding apparatus configured so that the distance between the rotating rollers is adjustable in response to the width of the molding.

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