KR101862170B1 - Shape Variable Extrusion Die - Google Patents

Abstract

Proposed is an extrusion die including a shape-variable structure. The extrusion die according to embodiments of the present invention is an extrusion die mounted between a material inlet part and an extrusion discharging part that constitute an extrusion apparatus, the extrusion die including: an inlet guide fixed in a pressurized state between the material inlet part and the extrusion discharging part and having an extrusion material guiding port guiding the extrusion direction of an extrusion material supplied from the material inlet part in the direction of a variable extrusion port; a variable die main body part mounted between the inlet guide and the extrusion discharging part, and having the variable extrusion port communicating with the extrusion material guiding port and a sliding rail on at least one side thereof toward the variable extrusion port; an extension pin carrier mounted on the sliding rail so as to be changeable in the position thereof; and multiple extension pins that are adjacent to each other and mounted on one end of the extension pin carrier in such a structure that the pins may be protruded or retracted by a predetermined length. According to the present invention, by providing with an inlet guide of a specific structure, a variable die main body part, an extension pin carrier, and extension pins, an extrusion die including a shape-variable structure capable of varying a cross-sectional shape of a product in the longitudinal direction thereof and also capable of varying the thickness of the product may be provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a Shape Variable Extrusion Die

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an extrusion-molding die, and more particularly, to an extrusion-molding die including a variable-section structure of an extruded product.

In general, extrusion processing is one of the metal processing methods that make the material (material) into a container (container) and push it out through the hole of the die, thereby making the cross-sectional area smaller and more constant than the material. Alloys are mainly used.

Such extrusion processing using an aluminum material has recently been employed in parts processing such as a chassis member, a vehicle body member, a bumper, and the like of a vehicle such as a passenger car or a truck due to its excellent durability and excellent recyclability.

The extrusion method is largely classified into a forward extrusion method and a reverse extrusion method. The forward extrusion method is an extrusion method in the case where the direction of the metal to be extruded is the same as the direction in which pressure is externally applied. In the reverse extrusion method, In the direction opposite to the direction in which the pressure is applied. The extrusion at high temperature is referred to as hot extrusion processing, and the extrusion at room temperature is referred to as cold extrusion processing.

Among them, the extrusion processing method by the above-mentioned positive extrusion method will be briefly described. The extrusion molding method has the steps of fixing an extrusion die having a hole portion having a sectional shape to be produced at the tip end of the container, At the same time, the extruded material is pressed by the presser (main stem) toward the die for extrusion, and the extruded material is extruded from the hole, whereby a product having a desired shape can be extruded.

That is, since the hole portion of the metal mold for extrusion has a constant cross-sectional shape, the product to be extruded and produced also has a constant cross-sectional shape toward the longitudinal direction. Here, since the cross-sectional shape of the product is the same as the shape of the hole of the extrusion die, it is possible to make a round bar, a bar, a shape member, a pipe, and other arbitrary articles by appropriately changing the hole shape of the extrusion die.

Such an extrusion process requires a large amount of force due to the nature of pushing the extruded material made of a metal material through the hole, so that it is necessary to have a tool that can withstand a high temperature and a high pressure together with a large scale mechanical equipment.

However, in the case of the product manufactured through the above-mentioned extrusion process, since it is formed long only with a predetermined cross-sectional shape in the longitudinal direction of the product, it is difficult to produce a product requiring a bend or a variable cross-sectional shape of the product. Particularly, since the product is formed to have the same thickness throughout the product even though the stress distribution is different depending on the product, a part of the product may have a size and a strength that are more than necessary, resulting in an uneconomical, There was also a blockage.

Fig. 1 is a schematic view of a conventional "variable cross-sectional extrusion molding method and its extrusion die" (Domestic Registration No. 10-0334421) for solving the above-mentioned problems. The extrusion dies include a first mold 10, And a second mold (11).

The first mold 10 is provided with a flange type success 15 having a dimension width equal to the maximum thickness dimension of one flange and a web success type 15 extending in a direction crossing the flange type success 15 And a first extrusion hole 14 formed at the other end of the web type success 16 and having a flange portion communication hole 17 having a width larger than the flange type success 15 is formed .

The second mold 11 is provided with a flange type success 27 having a dimension width equal to the maximum thickness dimension of the other flange and a web 27 extending in the direction crossing the flange type success 27 A second extrusion hole 30 formed at the other end of the web type success 28 and having a flange portion communication hole 29 having a width larger than the flange type success 27, .

At this time, the first mold 10 and the second mold 11 communicate with each other through the web extrusion holes 14 and the second extrusion holes 30, And the flange type success 15 of the other mold is disposed on the side of the flange portion communication hole 29 of the other die in order in the extrusion direction of the molding material and the web success 16, As shown in FIG.

As described above, the frame product as shown in Figs. 2 to 4 can be formed through the relative movement of the first mold 10 and the second mold 11. (The portion hatched in the X shape is molded)

However, in the conventional extrusion dies described above, since a high load is transferred to a cylinder for transferring a mold by deforming the product by transferring the mold, it is difficult to ensure smooth operation of the cylinder, and in particular, There is a possibility that an additional bending moment may be generated, thereby causing the quality of the extruded product to drop significantly.

Further, due to the structure characteristic of the mold being transferred, another separate component (housing) for guiding the transfer of the mold must be further provided on the outer side of the mold, so that the structure of the extrusion die becomes complicated, There is a problem that acts as a factor to induce.

Therefore, there is a need for a technique for an extrusion-molding die that can solve the above-described problems in the prior art.

Japanese Patent Registration No. 10-0334421 (registered April 15, 2002)

An object of the present invention is to provide an extrusion molding die including a variable structure capable of varying a sectional shape in the longitudinal direction of the product and also capable of varying the thickness of the product.

According to one aspect of the present invention, there is provided an extrusion-molding die to be mounted between a material inlet portion constituting an extrusion-molding apparatus and an extrusion-molding-discharge portion, And an extrusion material tool for guiding the extrusion direction of the extrusion material provided from the material inlet unit to the direction of the variable extrusion port is formed; A variable mold main body part mounted between the lead-in guide and the extrusion molding part and having a variable extrusion port communicating with the extrusion material induction port and having a sliding rail on at least one side thereof toward the variable extrusion port; An elongated pin carrier displaceably mounted on the sliding rail; And a plurality of extension pins mounted adjacent to each other in such a structure as to be protruded or indented by a predetermined length at one end of the extended pin carrier.

In one embodiment of the present invention, the extruded workpiece guide formed in the lead-in guide may have a tilted structure in the direction of the variable extrusion opening formed in the main body of the variable-diameter portion on the side surface.

In one embodiment of the present invention, the lead-in guide may further include an inner diameter changing device for changing an inner diameter of the extruded material guide. Further, the lead-in guide may further include a direction changing device for changing the lead direction of the extruded workpiece guide.

In one embodiment of the present invention, the lead-in guide has a block structure formed in a predetermined area so as to be in surface contact with the material inlet portion, and has a sliding guide rail part; And an inlet driving unit mounted to be slidably movable on the sliding rail and having an extrusion work guide member mounted at one end thereof.

In one embodiment of the present invention, the extrusion-molding die is provided with a plate-like guide plate, which is mounted so as to be in surface contact with one side surface of the lead-in guide and has a direction guiding through- ; A horizontal position changing unit for changing a horizontal position of the plate-shaped guide plate; And a vertical position changing unit for changing the vertical position of the plate-shaped guide plate.

In one embodiment of the present invention, the extension pin carrier may have a block structure having a width corresponding to one surface of the variable extrusion port formed in the variable mold body.

In one embodiment of the present invention, the extended pin carrier may be mounted on both side surfaces of mutually opposing sides of the variable outlet formed in the variable mold body portion.

According to an embodiment of the present invention, the variable extrusion opening formed in the body of the variable mold may have a rectangular shape when viewed from the side, and the extended pin carrier may be mounted on four side surfaces of the variable extrusion opening.

According to an embodiment of the present invention, the extension pins may be arranged so that a plurality of the extension pins are adjacent to one surface of the variable extrusion port formed in the variable mold main body portion.

In this case, the extension pins may be arranged in one column or in two or more columns.

As described above, according to the extrusion-molding die of the present invention, the cross-sectional shape can be varied in the longitudinal direction of the product by providing the draw-in guide, the variable mold main body portion, the extension pin carrier, It is possible to provide an extrusion molding die including a variable structure capable of varying the thickness of the mold.

Further, according to the extrusion-molding die of the present invention, by providing the inner diameter changing device or the direction changing device having a specific structure, it is possible to adjust the direction of feeding of the extrusion material fed through the extrusion material tool according to the shape of the variable extrusion opening formed in the variable- Can be appropriately changed, and as a result, it is possible to provide an extrusion-molding die capable of inducing a stable extrusion molding operation.

Further, according to the extrusion-molding die of the present invention, by providing the draw-in guide including the draw-in guide main body portion and the inlet-driven portion of a specific structure, the extrusion die is supplied through the extruded material tool according to the shape of the variable extrusion opening formed in the variable- It is possible to appropriately change the feeding direction of the extruded material, and consequently to provide an extrusion-molding die capable of inducing a stable extrusion molding operation.

Further, according to the extrusion-molding die of the present invention, by providing the plate-like guide plate, the horizontal position changing portion and the vertical position changing portion having a specific structure, the mold is supplied through the extrusion molding tool according to the shape of the variable extrusion opening formed in the variable- It is possible to appropriately change the feeding direction of the extruded material, and consequently to provide an extrusion-molding die capable of inducing a stable extrusion molding operation.

Further, according to the extrusion-molding die of the present invention, since the extension pin carrier having a specific structure and the extension pin driven and disposed at a specific position are provided, the extension pin carrier and the extension pin carrier provided on at least one side of the variable- By moving the extension pin to change the variable extrusion port and manufacturing the extrusion molded product, it is possible to realize the simplification of the mold due to the improvement of the mold structure, thereby drastically reducing the processing cost and mold manufacturing cost required for the mold processing An extrusion molding die can be provided.

1 is a front view showing an extrusion molding die according to the prior art.
Figs. 2 to 4 are schematic sectional views showing the shape of a product manufactured using the extrusion-molding die shown in Fig.
5 is a side view schematically showing a state in which an extrusion-molding die according to an embodiment of the present invention is mounted between a material inlet portion and an extrusion-molding discharge portion.
6 is an exploded assembly side view showing the extrusion-molding die shown in Fig.
Fig. 7 is a front view showing only the variable mold body portion, the extension pin carrier, and the extension pin of the extrusion-molding die shown in Fig.
8 is a cross-sectional view showing another embodiment of the lead-in guide shown in Fig.
9 is a cross-sectional view showing another embodiment of the lead-in guide shown in Fig.
10 is a front view showing still another embodiment of the lead-in guide shown in Fig.
11 is a front schematic view showing a variable mold main body portion, an extended carrier and an extension pin according to another embodiment of the present invention.
12 is a front schematic view showing a variable mold main body portion, an extended carrier and an extension pin according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to the description, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical concept of the present invention.

Throughout this specification, when a member is " on " another member, this includes not only when the member is in contact with another member, but also when there is another member between the two members. Throughout this specification, when an element is referred to as " including " an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

5 is a side schematic view showing a state in which an extrusion-molding die according to an embodiment of the present invention is mounted between a material inlet portion and an extrusion-molding discharging portion, and Fig. 6 is a view showing the extrusion- 7 is a front view of the extrusion molding die shown in Fig. 6, which is excerpted from the variable mold body portion, the extension pin carrier, and the extension pin only.

Referring to these drawings, the extrusion forming die 100 according to the present embodiment is a die to be mounted between a material drawing portion constituting an extrusion molding apparatus and an extrusion forming and discharging portion. The drawing guide 110 having a specific structure, The mold main body portion 120, the extension pin carrier 130, and the extension pin 140. [

According to the extrusion molding die of the present invention, since the drawing guide 110, the variable mold main body portion 120, the extension pin carrier 130 and the extension pin 140 having a specific structure are provided, It is possible to provide an extrusion molding die including a variable structure capable of varying the thickness of the product and varying the thickness of the product.

Hereinafter, with reference to the drawings, each constitution of the extrusion molding die 100 according to the present embodiment will be described in detail.

The drawing guide 110 according to the present embodiment is configured to be fixed in a pressurized state between the material drawing portion 101 and the extrusion forming and discharging portion 102. [ The lead-in guide 110 may have a structure in which an extruded material tool 111 for guiding the extruding direction of the extruded material provided from the material drawing unit 101 to the direction of the variable extrusion port is formed.

The variable mold main body portion 120 is configured to be mounted between the draw-in guide 110 and the extrusion-molding discharge portion 102. The variable mold main body portion 120 has a structure in which a variable extrusion port 121 communicating with the extruded material tool 111 is formed and a sliding rail 122 is formed on at least one side of the variable extrusion port 121 have.

At this time, the extended pin carrier 130 can be mounted on the sliding rail 122 in a position-changeable manner. The extension pin 140 may be mounted adjacent to the extension pin carrier 130 in such a manner that the extension pin 140 is protruded or indented by a predetermined length at one end of the variable pinion 130.

7, the extension pin carrier 130 may have a block structure having a width corresponding to one surface of the variable extrusion port 121 formed in the variable-type metal body portion 120. As shown in FIG. At this time, the extension pins 140 may be arranged adjacently to each other with a width corresponding to one surface of the variable extrusion port 121 formed in the variable mold body portion 120. Preferably, the extension plate 140 according to the present embodiment may be arranged in one row, as shown in Figs. 6 and 7. Fig. In some cases, the extrusion fin 140 may be arranged in two or more rows to produce an extrusion molded article having various structures and physical properties.

More specifically, the extension pin 140 according to the present embodiment includes an extension pin driving end 141 having a structure that is extended or shortened inside the variable extrusion opening 121, as shown in Fig. 7 The driving cylinder 143 driven by the extension pin driving device 142 is mounted on the inner end of the extension pin driving end 141 so that the extension pin driving end 141 can stably change the protrusion length. The above-mentioned extension pin driving device 142 may be a device for changing the position of the driving cylinder 143 using pneumatic or hydraulic pressure.

It is preferable that the driving cylinder 143 and the extension pin driving device 142 mentioned above are mounted inside the extension pin carrier 130.

By manually changing the drive cylinder 143 and the extension pin drive device 142 mounted on the inner end of the extension pin drive end 141 to the bolting engagement structure, Can be changed.

Fig. 8 is a cross-sectional view showing still another embodiment of the lead-in guide shown in Fig.

8, the extrusion molding oil tool 111 formed on the drawing guide 110 according to the present embodiment has a structure that is inclined in the direction of the variable extrusion opening 121 formed in the variable mold body portion 120 on the side face S).

In this case, the feeding direction of the extruded material supplied through the extruded material tool 111 can be appropriately changed in accordance with the shape of the variable extrusion opening 121 formed in the variable-type metal body portion 120, Can be obtained by using the extrusion molding method.

In some cases, an inner diameter changing device (not shown) for changing the inner diameter of the extruded material tool 111 can be further mounted so that the feeding direction of the extruded material can be changed more appropriately. Further, a direction changing device (not shown) for changing the direction of the extrusion molding oil tool 111 may be mounted.

Fig. 9 is a cross-sectional view showing another embodiment of the lead-in guide shown in Fig.

9, the drawing guide 110 according to the present exemplary embodiment may include a drawing guide body 112 having a specific structure, an extrusion work guide member 115, and an inlet driving unit 113. [

Specifically, the lead-in guide main body portion 112 may have a block structure formed in a predetermined area so as to be in surface contact with the material inlet portion 101. At this time, a sliding rail 114 may be formed on one side of the lead-in guide main body 112 in the direction of the extrusion molding oil tool 111.

In addition, the inlet opening 113 may be structured such that it is slidably mounted on the sliding rail 114, and the extrusion work guide member 115 is mounted at one end.

In this case, according to the present invention, since the draw-in guide 110 including the draw-in guide main body portion 112 and the inlet driving portion 113 having the specific structure is provided, the variable extruding port 121 can suitably change the feeding direction of the extruded material supplied through the extruded material tool 111, thereby providing an extrusion-molding die capable of inducing a stable extrusion molding operation.

Fig. 10 is a front view showing another embodiment of the drawing guide shown in Fig.

The extrusion molding die 100 according to the present embodiment may further include a plate-like guide plate 116 having a direction-guiding through-hole 117 having a specific structure. The plate-like guide plate 116 can be changed in position to change the position of the direction inducing through hole 117 and the position of the direction inducing through hole 117 can be changed by using the changed position of the direction inducing through hole 117, The supply direction of the material can be guided more stably in a specific direction.

Specifically, the plate-like guide plate 116 according to the present embodiment can be displaced by the horizontal position changing unit 118 and the vertical position changing unit 119, as shown in FIG.

11 is a front schematic view showing a variable mold main body portion, an extended carrier and an extension pin according to another embodiment of the present invention. FIG. 12 shows a modified mold main body portion, There is shown a front view schematically showing a carrier and extension pins.

Referring to these figures, the extrusion molding die 100 according to the present embodiment can mount the extension pin carriers 130 on both sides of mutually opposing sides of the variable extrusion ports 121 formed in the variable-type metal body portion 120 have. 12, when the variable outlet 121 formed in the variable mold main body portion 120 is formed in a rectangular shape when viewed from the side, the variable mold main body portion 120 is deformed by the variable extrusion And can be mounted on four side faces of the sphere 121.

It is needless to say that the structure of the variable extrusion opening 121 formed in the deformable mold main body 120 can be changed into various shapes in consideration of the designer's intention and the shape of the product to be manufactured, It is possible to mount the extension pin carrier 130 in the direction of the arrow.

Thus, according to the present invention, by locating the extended pin carrier 130 and the extended pin 140 at a specific position, the extended pin carrier 130, which is provided on at least one side of the variable mold main body portion, It is possible to realize the simplification of the mold due to the improvement of the mold structure by changing the variable extrusion port 121 by moving the extension pin 140 and the extension pin 140 to produce an extrusion molded product, It is possible to provide an extrusion molding die capable of drastically reducing the manufacturing cost.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

That is, the present invention is not limited to the above-described specific embodiment and description, and various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. And such variations are within the scope of protection of the present invention.

101: Material inlet unit
102: extrusion molding part
103: Presser
100: extrusion mold
110: Incoming guide
111: Extrusion tool
112: inlet guide body portion
113:
114: sliding rail
115: extruded workpiece guiding member
116: Plate-shaped guide plate
117: Directional guidance through-hole
118: Horizontal position changing unit
119: vertical position changing unit
120: variable mold body part
121: variable extruder
122: sliding rail
130: Extension pin carrier
140: Extension pin
141: extension pin drive end
142: extension pin drive
143: drive cylinder

Claims (11)

An extrusion molding die (100) to be mounted between a material drawing portion and an extrusion molding portion constituting an extrusion molding device,
An extruded material tool 111 which is fixed in a pressurized state between the material inlet portion 101 and the extrusion molding portion 102 and guides the extrusion direction of the extrusion material provided from the material inlet portion 101 in the direction of the variable extrusion opening (110) having a guide portion (110) formed thereon;
A variable extrusion port 121 which is installed between the inlet guide 110 and the extrusion molding unit 102 and communicates with the extrusion molding oil tool 111 is formed and at least one side thereof is connected to the variable extrusion port 121 A variable mold body portion 120 having a sliding rail 122 formed thereon;
An extension pin carrier (130) that is positionably mounted on the sliding rail (122);
A plurality of extension pins 140 mounted adjacent to each other at a first end of the extension pin carrier 130 that is protruded or indented by a predetermined length;
A receiving guide main body 112 having a block structure formed in a predetermined area so as to be in surface contact with the material receiving portion 101 and having a sliding rail 114 formed on one side thereof in the direction of the extrusion molding oil tool 111; And
An inlet driving part 113 slidably mounted on the sliding rail 114 and having an extrusion work-inducing member 115 mounted on one end thereof;
And an extrusion molding die.
The method according to claim 1,
Wherein the extrusion molding oil tool 111 formed on the drawing guide 110 is a structure S which is inclined in the direction of the variable extrusion opening 121 formed in the variable mold main body portion 120 on the side face. .
The method according to claim 1,
The lead-in guide (110)
Further comprising an inner diameter changing device for changing an inner diameter of the extruded material tool (111).
The method according to claim 1,
The lead-in guide (110)
Further comprising a direction changing device for changing a direction in which the extruded material tool (111) is guided.
delete The method according to claim 1,
In the extrusion-molding die 100,
A plate-like guide plate (116) mounted to be in surface contact with one side surface of the lead-in guide (110) and having a direction guiding through-hole (117) structured to communicate with the extrusion molding oil tool (111) when seen from the side;
A horizontal position changing unit 118 for changing the horizontal position of the plate-like guide plate 116; And
A vertical position changing unit 119 for changing the vertical position of the plate-like guide plate 116;
And an extrusion molding die.
The method according to claim 1,
Wherein the extension pin carrier (130) has a block structure having a width corresponding to one surface of the variable extrusion port (121) formed in the variable mold main body (120).
The method according to claim 1,
Wherein the extension pin carrier (130) is mounted on opposite sides of mutually opposing sides of the variable extrusion port (121) formed in the variable mold body part (120).
The method according to claim 1,
The variable extruding port 121 formed in the variable mold main body portion 120 has a rectangular shape when viewed from the side,
Wherein the extension pin carrier (130) is mounted on the four side surfaces of the variable outlet (121).
The method according to claim 1,
Wherein a plurality of the extension pins (140) are arranged adjacent to one surface of the variable extrusion port (121) formed in the variable mold main body part (120) with a width corresponding to the one surface.
11. The method of claim 10,
Wherein the extension pins (140) are arranged in one column or two or more columns.

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