KR100857910B1 - Extrusion molding apparatus - Google Patents

Abstract

An extruder is provided to enhance endurance of the extruder by preventing materials from being collected in one spot of the extruder and preventing stress from being concentrated onto a main shaft. An extruder comprises a housing(110) formed with an inlet and an outlet(114), a plurality of first extrusion screws(120) provided in the housing, and a plurality of a second extrusion screws(130) provided in the housing. The first extrusion screws extrude materials introduced into the housing. The second extrusion screws are engaged with the first extrusion screws to transfer the materials to the outlet of the housing. The outlet has a plurality of discharge ports arranged in a predetermined pattern, and a cover for covering the discharge ports.

Description

Extrusion Molding Apparatus

The present invention relates to an extrusion machine, and more particularly to an extrusion machine capable of improving the structure and durability and extrusion efficiency, and can be used to produce a profile and RDF.

Currently, the amount of waste plastics produced in Korea is increasing by 12% per year, but the waste plastics are not recycled effectively, but more than 50% of them are incinerated or landfilled. However, incineration and landfill of waste plastics cause serious environmental problems by contaminating water quality and air, and interest in recycling waste plastics is increasing day by day.

According to the statistics, in 1993, the amount of waste plastics generated was about 1.94 million tons, of which 8.9% of the 170,000 tons were recycled, but in 1999, the amount of waste plastics generated was 3.32 million tons. Twenty-five million tonnes, or 20 percent of which are recycled, is expected to generate more than seven million tonnes in 2010, of which 45 to 50 percent are recycled.

As the “Producer Responsibility Recycling System (EPR)” has been enacted since 2003, the problem of recycling wastes such as waste plastics, which is increasing gradually, is an urgent issue. There is a situation.

Conventionally, a melt extrusion method through electric heating is used as one of the technologies for recycling waste, but due to the difference in melting point due to the characteristics of the extrusion object, the material having a low melting point is carbonized even when melting at 250 ° C. Mixing with a large amount of water vapor has a problem that adversely affects the health of the worker, such as causing gas pollution in the production site, and productivity is not high compared to the input capacity.

As one of the methods to solve this problem, an extruder has been proposed in which extruded materials are melt-extruded using frictional heat by interlocking and rotating extrusion screws, and RDF (Refuse Derived Fuel) having mixed waste plastic with general combustible waste or It is processed into profile shape of size and shape that meets the purpose and is used as building materials or alternative fuel.

However, the conventional extruder by melt extrusion had the following problems.

First, when the material is melt-extruded by a pair of extruded screws, the extrusion object is concentrated in the center, the pressure is concentrated in this area, the extruded screw is deformed or damaged due to excessive force is applied to the extruded screw There was this.

Second, when the material is extruded through the extrusion screw, the torsional stress and the bending stress act excessively on the main shaft forming the rotating shaft of the extrusion screw, there is a problem that the main shaft is deformed or broken and the extrusion is not performed smoothly. .

Third, it is necessary to manufacture a profile and RDF for the type of material to be used or intended to be used, but there is a problem that the conventional extrusion machine can not process both forms.

In order to produce two types of recycled products, it is possible to simply change the shape of the discharged area, but in this case, the processing conditions required for the processing of the profile and the RDF cannot be met, and the processed profile and the RDF satisfy the desired degree of quality. I couldn't.

The present invention is to solve the above-mentioned conventional problems, the object of the present invention is to improve the structure to prevent the concentration of material in one place and to minimize the concentration of stress on the main shaft to provide an extrusion molding machine that improves durability It is for.

Another object of the present invention is to provide an extrusion molding machine which can process a profile and an RDF in combination, and improves the quality of recycled products by performing extrusion according to processing conditions suitable for each of them.

Still another object of the present invention is to provide an extruder which provides an optimized structure of recycled products to be processed to improve extrusion efficiency.

In order to achieve the above object, the present invention provides a housing having an inlet and an outlet, a plurality of first to be provided in the housing, the extrusion of the extrusion object introduced into the housing through the inlet while rotating in engagement with each other It is provided in the extrusion screw and the housing, coupled to each of the plurality of first extrusion screw to rotate together with the first extrusion screw, the direction parallel to the direction of rotation of the first extrusion screw via the first extrusion screw It provides an extruder comprising a plurality of second extrusion screw to be extruded into the extrusion object to be sent to the discharge portion.

The second extrusion screw is preferably detachably coupled to the first extrusion screw. In addition, it is more preferable that an intermediate connecting member is formed between the first extruded screw and the second extruded screw so as to decrease in diameter toward the second extruded screw. Here, the intermediate connecting member is preferably coupled to the first extrusion screw and the second extrusion screw by a plurality of coupling bolts.

On the other hand, the plurality of coupling bolts may be arranged at regular intervals along the circumferential direction.

In addition, in the extruder according to the present invention, at least one of the space between the first extrusion screw and the intermediate connecting member and the second extrusion screw and the intermediate connecting member is fitted to both sides adjacent to each other and has an axial rotational force. It is preferable that a torque transmitting member for transmitting is provided. Here, it is more preferable that a through hole is formed at the center of the torque transmission member to allow the coupling bolt to be disposed therethrough.

The first extrusion screw is configured by combining a plurality of segments, and the plurality of segments constituting the first extrusion screw are preferably joined by a plurality of coupling bolts. Here, the plurality of coupling bolts may be arranged at regular intervals along the circumferential direction.

On the other hand, between the plurality of segments constituting the first extrusion screw, it is preferable that a torque transmission member is inserted on both sides adjacent to each other and transmits the axial rotational force.

Preferably, the discharge part includes a plurality of discharge ports formed in a predetermined pattern. The outlet may be arranged in a V shape having a plurality of rows, but is not limited thereto.

The discharge unit may include a blocking cover coupled to each of the plurality of discharge holes to close the discharge hole.

In addition, a separation part for partitioning each of the second extrusion screw may be provided between the second extrusion screw, and the extrusion object may be configured to be distributed to each second extrusion screw. Here, the front end of the separating portion is preferably provided with a guide surface inclined at an angle.

Extruder according to the present invention is disposed on the path in which the grinding object is introduced into the second extrusion screw between the first extrusion screw and the second extrusion screw to adjust the amount of the extrusion object flowing into the second extrusion screw. It is preferred that the inlet flow rate control unit is provided.

The cutting unit may include a cutting unit for cutting the extrusion object discharged from the discharge unit to a predetermined length, and the cutting unit may include a plurality of cutting blades rotating through a rotating shaft.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of this embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted.

First, referring to Figures 1 and 2, the overall configuration of the extrusion machine according to the first embodiment of the present invention will be described. 1 is a block diagram showing an extrusion machine according to the present embodiment, Figure 2 is a block diagram showing an inlet portion of the extrusion machine according to the present embodiment.

Extruder according to the present invention comprises a housing 110, the first extrusion screw 120 and the second extrusion screw 130.

The housing 110 is provided with an inlet 112 for introducing the extrusion object into the housing 110 and a discharge unit 114 for discharging to the outside of the housing 110.

The extrusion object may be various materials that can be extruded, such as plastic waste such as packaging containers or waste synthetic resins used for living or industrial purposes, wood waste including waste manure or garden waste, waste paper, and textile waste.

In the present embodiment, the inlet 112, as shown in Figure 2, is configured in the form of the top is open to introduce the material into the first extrusion screw 120 that rotates in engagement with each other.

Although not shown, in order to continuously send the compression object to the inlet 112, the inlet 112 may be provided with a feeding means such as a metering input device or a vibrating feeder for moving the compression object. have.

On the other hand, the extrusion machine according to the present invention is extruded by the first extrusion screw 120 and the second extrusion screw 130.

Specifically, in the case of processing into a profile for the production of construction civil engineering materials, such as substitute wood or substitute brick, or decorative landscaping material, to extrude by using the first extrusion screw 120, to be processed into recycled fuel such as RDF In this case, the first extrusion screw 120 and the second extrusion screw 130 are configured to use both.

1 illustrates a form in which the first extrusion screw 120 and the second extrusion screw 130 are combined to manufacture an RDF.

The first extrusion screw 120 is provided in the housing 110, the connection portion 1740 formed at the end of the first extrusion screw is coupled to the drive shaft, and engaged with each other by the rotational force transmitted from the drive shaft 172 to rotate.

In addition, the extrusion object is introduced into the first extrusion screw 120 provided in the housing 110 through the inlet 112 described above.

Extrusion molding machine according to the present invention is made by extruding by melting the extrusion object by using the friction heat by the drive of the first extrusion screw 120 is engaged with each other in this way, it is differentiated from the melting method by the conventional electric heating method.

The first extrusion screw 120 is made of a kind of helical gear inclined at a predetermined angle is configured to be extrudable in one direction by rotation. Here, the specific shape of the first extrusion screw can be variously modified in the design process.

In this embodiment, as shown in Figure 1, the first extrusion screw 120 is a pair of interlocking, but the number of the first extrusion screw is not limited to three or more extruded screw arranged in the form of interlocking with each other. It is also possible to consist of.

The second extrusion screw 130 is coupled to each of the plurality of first extrusion screws 120 described above in the housing 110 and rotates together with the second extrusion screw 130 to thereby rotate the first extrusion screw 120. It is a component for extruding the extrusion object having passed through again.

In the present embodiment, the second extrusion screw 130 is configured in a pair corresponding to the number of the first extrusion screw 120.

On the other hand, the extruder, the first extrusion screw 120 and the second extrusion screw 130 is detachably coupled, specifically coupled by a plurality of coupling bolts 192 disposed along the circumferential direction. In addition, the first extrusion screw 120 is configured by combining a plurality of segments 122 and 124, and the plurality of segments 122 and 124 are coupled to each other by a plurality of coupling bolts 194 disposed along the circumferential direction. .

The coupling structure between the first extrusion screw 120 and the second extrusion screw 130 and the coupling structure between the plurality of segments 122 and 124 constituting the first extrusion screw 120 are shown in FIGS. This will be described later with reference to 12.

Next, the process of extruding the extrusion object by the second extrusion screw 130 with reference to FIGS. 3 to 5 will be described in detail.

In the extrusion apparatus according to the present invention, as shown in FIG. 3, the extrusion object first extruded by the first extrusion screw 120 is arranged along a direction parallel to the rotation direction of the first extrusion screw 120. It is made of a form flowing into the extrusion screw 130.

Specifically, the extrusion object exited between the pair of first extruded screws 120 and through the left and right sides of the first extruded screw 120 is configured to flow into the second extruded screw 130.

As such, the present embodiment is configured such that the extrusion object introduced into the second extrusion screw 130 flows in between the first extrusion screw 120 and from the left and right sides thereof, so that the pressure generated by the extrusion object is placed before the screw is disposed. It can be evenly distributed in the area.

On the other hand, in the present embodiment is provided between the first extrusion screw 120 and the second extrusion screw 130, the inflow amount adjusting unit 160 is provided on the inflow path of the object to be crushed, it is introduced into the second extrusion screw 130 It is configured to adjust the amount of the extrusion object.

In addition, as shown in Figure 3, between the pair of second extrusion screw 130, a plate-shaped separating portion 150 for partitioning each of the second extrusion screw 130 is formed, the left and right Extruded screws provided in the to be melted in the mutually independent space to be extruded.

As the second extrusion screw 130 is extruded in an independent space through the separation part 150, the pressure distribution is uniform in the discharge part 114, and the RDF of good quality and uniform density can be produced. .

In this embodiment, the tip of the separation unit 150 is provided with a guide surface inclined by a predetermined angle, so that the extrusion object exiting the first extrusion screw 120 smoothly flows into each of the second extrusion screws 130. To be possible.

In addition, between the first extrusion screw 120 and the second extrusion screw 130, it is preferable that the intermediate connection member 140 of the form of decreasing diameter toward the second extrusion screw 130 is provided.

As such, since the intermediate connection member 140 is provided between the first extrusion screw 120 and the second extrusion screw 130, the separation unit 150 may be provided between the pair of second extrusion screws 130. Allow the space to be formed smoothly.

On the other hand, the discharge portion 114 preferably includes a plurality of discharge ports formed in a predetermined pattern. In this embodiment, the outlet is arranged in a V shape having a plurality of rows, as shown in FIG. As such, by forming the plurality of outlets in a predetermined pattern, it is possible to prevent the concentration of pressure in a specific portion of the outlet of the housing.

Along with the discharge unit 114, a protrusion 116 extending from the discharge unit 114 is provided, and a coupling hole 116a is formed on the protrusion 116 to allow the discharge control member 118 to be disposed. Is configured to be combined. In this way, by selectively coupling the discharge control member 118 to the protrusion 116, it is possible to appropriately control the discharge of the extrusion object.

On the other hand, the extrusion apparatus according to the present invention, it is preferable that the cutting unit 182 for cutting the extrusion object discharged from the discharge unit 114 to a predetermined length.

In this embodiment, as shown in Figure 4, the cutting unit 182 is disposed on the coupling housing 180, the plurality of cutting blades 184 formed on the outer side of the rotating shaft rotates at a constant speed while the discharge portion 114 It is configured to cut the extrusion object exited through).

6 and 7, a coupling structure between the first extrusion screw and the second extrusion screw and a coupling structure between a plurality of segments constituting the first extrusion screw will be described below.

As described above, the first extrusion screw 120 and the second extrusion screw 130 are detachably coupled, and the first extrusion screw 120 is configured by combining a plurality of segments 122 and 124.

In this embodiment, the first extrusion screw 120 and the second extrusion screw 130 is coupled by a plurality of coupling bolts 194 disposed along the circumferential direction, the first extrusion screw 120 and the second Between the extrusion screw 130 is provided an intermediate connecting member 140 to reduce the diameter.

In the present embodiment, torque transmission members 128 and 134 are provided between the first extrusion screw 120, the intermediate connecting member 140, and the second extrusion screw 130 to provide an axial rotational force of the first extrusion screw 120. To pass. Here, the torque transmission members (128, 134) are respectively fitted in the groove formed in each of the first extrusion screw 120 and the intermediate connection member 140 to transfer the rotational force of the first extrusion screw 120 to the intermediate connection member 140 side. Done.

On the other hand, the first extrusion screw 120 is also made of a plurality of segments 122 and 124 are coupled to each other, is coupled by a coupling bolt 192 disposed at regular intervals along the circumferential direction.

In this embodiment, while the torque transmission member 126 is inserted between the plurality of segments 122 and 124, the rotational force can be transmitted from the drive shaft 172 to the second extrusion screw 130.

As such, according to the present embodiment, each of the plurality of segments 122 and 124 constituting the first extrusion screw 120, the second extrusion screw 130, and the first extrusion screw 120 is formed by a plurality of coupling bolts 192. By combining, it is possible to prevent stress concentration and to improve durability of the member.

That is, by evenly dispersing the stress to the plurality of coupling bolts (192,194), it is possible to prevent the deformation or breakage of the main shaft caused by the concentration of torsional stress in the main shaft when transmitting the rotational force by a single main shaft, As a result, the durability of the member can be improved.

In this embodiment, the filling plate 132 is coupled to the lower end of the second extrusion screw 130 by a fastening bolt 196 as shown in FIG.

Referring to Figures 8 and 9, it will be described the process of processing the profile with an extruder according to the present invention.

As shown in FIG. 8, when the profile is processed, the first extrusion screw 120 is configured to be engaged with each other in a form in which the second extrusion screw 130 is removed, and a central portion of the first extrusion screw 120 is formed. Extruded object (M) to be discharged.

A separate intermediate housing 140 is coupled to the end of the housing 110, and an outlet 210 protruding outward by a predetermined length is fastened to a portion from which the extrusion object M is discharged from the intermediate housing 140. Formed by the member 215, it is discharged to the outside in the form of a profile having a predetermined cross section.

In this case, the outlet 210 is provided with a cross-sectional control unit 212, it is configured to adjust the cross-section according to the state of the extrusion target (M) or the use of the processed profile.

Specifically, the cross-sectional control unit 212 is composed of an opening and closing member 214 and a pressure jaw (jow) connected thereto, as shown in Figure 9, extruded by moving the pressure jaw to adjust the inclination of the opening and closing member The cross section can be adjusted by controlling the emissions of the object.

On the other hand, although not shown, the end portion of the outlet 210 is provided with a cutting device for cutting the profile, it is preferable to be able to cut the profile to the desired length according to the application.

FIG. 10 is a view illustrating a coupling state of the first extrusion screw 120 and the intermediate connecting member 140 in the extruder of FIG. 8, in the coupling bolts 192 and 194 disposed at regular intervals along the circumferential direction as described above. By coupling the plurality of segments 122 and 124 constituting the first extrusion screw 120, the intermediate connecting member 140 is coupled to the first extrusion screw 120.

The torque transmission members 126 and 128 described above are provided between the plurality of segments 122 and 124, and are configured to transmit the rotational force of the driving shaft 172, and a filling bolt 145 is coupled to the lower side of the intermediate connecting member 140. .

As described above, the extruder according to the present invention by combining as shown in FIG. 1 when manufacturing the RDF and as shown in FIG. The extrusion can be performed.

Next, referring to Figures 11 and 12, the coupling structure of the first extrusion screw 220, the intermediate connection member 240 and the second extrusion screw 230 according to the second embodiment of the present invention Same as

In the present embodiment, as in the first embodiment described above, the first extrusion screw 220 and the second extrusion screw 230 are detachably coupled to each other, and the first extrusion screw 220 includes a plurality of segments 222 and 224. ) Is combined.

However, the first embodiment described above combines the plurality of segments 122 and 124 and the intermediate connecting member 140 constituting the drive shaft 172 and the first extrusion screw 120 by one coupling bolt 192 in the longitudinal direction. On the other hand, in the present embodiment, the plurality of coupling bolts 262, 264, 282, 284 in the longitudinal direction is configured to engage between two adjacent members.

Specifically, assuming a structure in which a total of 12 through holes are formed, any one of the through holes is a connection structure as shown in FIG. 11, and the adjacent through holes have a connection structure as shown in FIG. 12.

According to this connection structure, the first coupling bolt 262 illustrated in FIG. 11 couples the drive shaft 272 and the first segment 222 to each other, and the second coupling bolt 264 is intermediate with the second segment 224. The connecting member 240 is coupled to each other.

In addition, the third coupling bolt 282 illustrated in FIG. 12 mutually connects the first segment 222 and the second segment 224 which are not connected by the first coupling bolt 262 and the second coupling bolt 264. The fourth coupling bolt 284 couples the intermediate connecting member 240 and the second extrusion screw 230 to each other.

In addition, the torque transmission members 226, 228, 234 and 236 are fitted into each of the connection portions between the respective members as in the first embodiment.

In this way, the coupling bolt between the members for each through-hole formed along the circumferential direction is configured to couple only two members adjacent to each other, thereby reducing the length of the coupling bolt connecting the members. It can withstand bending stresses and the like, thereby improving the strength of the screw, and consequently, increasing the durability of the device.

Meanwhile, the filling plate 232 is coupled to the lower end of the second extrusion screw 130 by the fastening member 286 as in the first embodiment.

The scope of the present invention is not limited to the above embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

Extruder according to the present invention having the above configuration has the following effects.

First, there is an advantage in that the pressure is prevented from being concentrated in the process of extruding by the screw engaged with each other, thereby preventing the extrusion screw from being deformed or broken, thereby improving durability.

In particular, by introducing the extrusion object in a direction parallel to the rotation direction, it is possible to prevent pressure concentration generated by the extrusion object in advance.

In addition, by combining the extrusion screw by a plurality of coupling bolts, there is an advantage that can prevent the excessive twisting stress and bending stress act on the rotating shaft to prevent the deformation and breakage of the screw in advance.

Second, there is an advantage that can be used in combination with the profile and RDF according to the type of material or the intended use.

Specifically, by providing the optimum processing conditions for the RDF and the profile, it is possible to combine the RDF and profile of the desired quality.

Third, by performing the extrusion using the frictional heat driven by the self-drive, there is an advantage that can be produced as a recycled product at a low price.

In particular, it is possible to significantly reduce the power consumption compared to the conventional electric heating method, there is an advantage that can be reduced accordingly the production cost.

Fourth, the present invention can effectively melt waste plastics having a large difference in melting point without generation of harmful gases, and do not generate any harmful gases or smoke even when mixing, extruding and molding heterogeneous materials such as wood and paper. There is an advantage in maintaining a friendly workplace.

1 is a block diagram showing a configuration for manufacturing RDF in an extrusion molding machine according to a first embodiment of the present invention;

Figure 2 is a schematic view showing the inlet portion in the extrusion machine of Figure 1;

Figure 3 is a block diagram showing an extrusion process by the second extrusion screw in the extrusion machine of Figure 1;

4 is a perspective view showing a discharge portion of FIG. 1;

FIG. 5 is a cross-sectional view showing a discharge portion of FIG. 4; FIG.

6 is a cross-sectional view showing a coupling state of the first extrusion screw, the intermediate connecting member and the second extrusion screw of FIG.

7 is an exploded cross-sectional view of FIG. 6;

8 is a block diagram showing a configuration for producing a profile in the extrusion machine of Figure 1;

Figure 9 is a cross-sectional view and front view showing the outlet and the section control in the extruder of Figure 8;

10 is a cross-sectional view showing a coupling state of the first extrusion screw and the intermediate connecting member in the extrusion machine of FIG.

11 is a cross-sectional view taken along the line A-A showing the engagement state of the first extrusion screw, the intermediate connecting member and the second extrusion screw according to the second embodiment of the present invention;

12 is a cross-sectional view taken along line B-B showing a coupling state between a first extrusion screw, an intermediate connecting member, and a second extrusion screw according to a second embodiment of the present invention;

<Explanation of Signs of Major Parts of Drawings>

110: housing 112: inlet

114: discharge portion 116: protrusion

118: discharge control member 120: first extrusion screw

130: second extrusion screw 140: intermediate connecting member

150: separating unit 160: inflow rate adjusting unit

172: drive shaft 174: coupling portion

180: coupling housing 182: cutting unit

210: outlet 212: section control unit

Claims (19)

A housing having an inlet and an outlet; A plurality of first extrusion screws provided in the housing and extruding the extrusion object introduced into the housing through the inlet part while being engaged with each other; And It is provided in the housing, coupled to each of the plurality of first extrusion screw to rotate together with the first extrusion screw, flows in a direction parallel to the rotation direction of the first extrusion screw via the first extrusion screw A plurality of second extrusion screws for extruding the extrusion object and sending them to the discharge unit; It is configured to include, The discharge part includes a plurality of discharge ports formed in a predetermined pattern, The discharge unit, coupled to each of the plurality of outlets, extrusion molding machine further comprising a blocking cover for closing the outlet. The method of claim 1, And the second extrusion screw is detachably coupled to the first extrusion screw. The method of claim 1, Extrusion molding machine characterized in that the intermediate connecting member is provided between the first extrusion screw and the second extrusion screw is reduced in diameter toward the second extrusion screw side. The method of claim 3, The intermediate connecting member is an extruder, characterized in that coupled to the first extrusion screw and the second extrusion screw by a plurality of coupling bolts. The method of claim 4, wherein The plurality of coupling bolts, the extrusion molding machine, characterized in that arranged at a predetermined interval along the circumferential direction. The method of claim 4, wherein At least one of the space between the first extrusion screw and the intermediate connecting member and the second extrusion screw and the intermediate connecting member is provided with a torque transmission member which is fitted on both sides adjacent to each other and transmits an axial rotational force. An extrusion molding machine characterized by. The method of claim 6, Extruder, characterized in that the through-hole is formed in the center of the torque transmission member so that the coupling bolt is disposed through. The method of claim 1, The first extrusion screw is an extruder, characterized in that a plurality of segments are configured to combine. The method of claim 8, And a plurality of segments constituting the first extrusion screw are joined by a plurality of coupling bolts. The method of claim 9, The plurality of coupling bolts, the extrusion molding machine, characterized in that arranged at a predetermined interval along the circumferential direction. The method of claim 9, Between the plurality of segments constituting the first extrusion screw, the extruder is provided with a torque transmission member which is fitted on both sides adjacent to each other and transmits the axial rotational force. delete The method of claim 1, The outlet, Extruder, characterized in that arranged in a V shape having a plurality of rows. delete The method of claim 1, An extruder according to claim 1, wherein a separation part for partitioning each of the second extrusion screws is provided between the second extrusion screws. The method of claim 15, Extruder, characterized in that the front end is provided with a guide surface inclined at an angle. The method of claim 1, Between the first extruded screw and the second extruded screw is disposed on the path in which the grinding object flows into the second extrusion screw, the inflow amount adjusting unit for adjusting the amount of the extrusion object flowing into the second extrusion screw is provided Extruder, characterized in that. The method of claim 1, Extrusion molding machine characterized in that it further comprises a cutting unit for cutting the extrusion object discharged from the discharge to a predetermined length. The method of claim 18, The cutting unit is an extruder, characterized in that it comprises a plurality of cutting blades that rotate through the rotation axis.