JP2006068750A - Method for extruding aluminum shaped material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the extrusion of a plurality of shaped materials cannot be carried out from one billet in the conventional extruding method, in which one or more billets are extruded by using one die, therefore when a billet 40 had been jammed into the entrance of a die 4a and an aluminum extrusion shaped material does not come out, the billet 40 is drawn out from a container 3, and the die is changed, and the extrusion is restarted by a new billet, and also when a so-called flower blooming trouble had occurred, aluminum must be removed by means of an air chisel. <P>SOLUTION: In the present method, the container 3 and a stem 6 are receded from the die 4a, and also the billet 40 is fractured into portions 41, 48 between the die 4a and the container 3. Blank materials of aluminum projecting from the die 4a and the container 3 respectively are cut off by means of shear knives 25, 42. Then, after the die has been changed or has not been changed, the extrusion is resumed using the billet 40 remaining in the container 3. The blank materials of aluminum projecting from the container 3 side may be crushed by compressing it ( by a die 45) or may be cut off (by a die holding hole 61). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for extruding an aluminum billet from a die and forming it into a shape.

  The extrusion cycle of aluminum profiles is well known, and is generally described in Patent Document 1 (Japanese Patent Publication No. 8-252), column 5, line 11 to column 6, line 9. The processes related to the present invention are extracted from Patent Document 1 as follows. (B) Main shear descent, main shear rise (5th column, 49th line), (b) Ram stop at position where butts remained (12th column, 10-11th line, Fig. 4), (c) 1 of the extruder Billets are fed to the extruder at the end of the cycle (Column 5, lines 13-14). These are described with reference to FIG.

  FIG. 1 is a schematic view of the main part of an extruder, in which 1 is a cylinder, 2 is a ram, 3 is a container, 4 is a die, 5 is an extruded profile, and 6 is a stem. The billet is usually 7 inches in diameter and is charged into the container 3 after heating, pressurized by the stem 6 and extruded from the die 4. As shown in FIG. 1, when almost the entire billet is extruded, it becomes impossible to extrude even if a higher pressure is applied. In this state, the stem 6 is stopped in the container 3. The billet remaining in the container 3 is said to be butts 7 or discard and usually has a thickness of about 20 to 40 mm.

  In order to start the next extrusion cycle, the ram 2 and the container 3 are moved backward as shown in FIG. 2 and the shear knife (sometimes referred to as the main shear) 8 is lowered by the attached cylinder 9 to cut the butts 7. It is necessary to drop. The shear knife 8 applies almost the same force as the extrusion pressure to the butts 7 and separates the extruded material remaining in the die 4 from the butts 7 in about 2 seconds. The separation surface that produces this result is a mirror surface.

  Accordingly, one cycle of extrusion starts from charging of the billet into the container and ends when the container is closed after shearing the butts 7, so that the billet is supplied to the extruder after the end of the extrusion cycle. That is, for one die 4, one or more billets are extruded.

FIG. 3 shows the main part of the extruder equipped with the shear knife, excluding the hydraulic oil tank, the pump for pumping oil, and the motor for driving the pump.
The oil is pumped into the cylinder 1 through the prefill valve 10, pressurizes the ram 2 that is slidably supported through the bush 1 (not shown), and reaches the ram 2 through the pressure plate 11. The fixed stem 6 is advanced. The container 3 is composed of a container holder 12 and a container liner 13 held coaxially, and these can be moved forward and backward by a container guide 14 as shown in FIGS. A tie rod 15 supports the above-described members and dies and guides the movement of the container 3.
An end platen 16 is fixed to the tie rod 15, and a die slide upper portion 17 and a die slide lower portion 18 are fixed to the container side, and the die is guided into the end platen 16 and loaded. A pressure ring 19 is fitted on the container side of the end platen 16.

  A shear mechanism 20 for cutting off the butts is fixed to the container side of the end platen 16. This includes a shear guide 23 in the main shear cylinder rod 22 that moves up and down in the shear cylinder 21, and a shear knife 25 is fixed to the tip of a shear fixing portion 24 that moves up and down in the shear guide 23 in a manner that can be replaced when worn. Has been.

A die 4 not shown in FIG. 3 and its peripheral members are shown in FIG.
In the figure, 30 is a bolster, 31 is a dummy bolster, 32 is a bucker, 33 is a die ring, 34 is a dummy block, and 40 is a billet.
The die die 4a is a solid die, but a holrodice may also be used. The shear knife 25 descends to rub the container side surface of the die mold 4a, separates the aluminum from the die mold 4a in about 2 seconds, and the separated aluminum chips escape from the flank 25a, Butts 7 is removed. This butts process automatically proceeds, and the extrusion is resumed immediately after the shear knife returns to the upper end.

  Although not shown, rarely aluminum may enter a slight gap between the container liner 34 and the die mold 4 and leak out to the outside. This is an extrusion defect called “flower bloom”.

  Patent Document 2 (Japanese Patent No. 2531603) discloses a sliding die changer 50 as shown in FIG. In the figure, 51 is a die slide cylinder, 52a and b are die plates, 53 is a die replacement cylinder, and 56 is a die combining a die mold and a bolster. In FIG. 5, the die 56 is in contact with the end platen 16 and is waiting for being pressed by the container 3. When the die 56 is fixed as shown in FIG. 4 and then the die plate 52a is pulled out and removed by the die slide cylinder 51, extrusion becomes possible. In order to replace the dies, the state shown in FIG. 6 is again set, and the dies 56 are transferred between the dies plates 52a and 52b.

In place of the die plate, a box for storing the die 56, that is, a die box is also used. Insert a die 56 into the openings formed on both sides of the end platen and the container to prepare a box with a die attached and an empty box without a die attached. Then hand over the dice. When the die is fixed as shown in FIG. 4, the entire box equipped with the die is installed in the extruder.
Japanese Patent Publication No. 8-252 Japanese Patent No. 2531603

  By passing the aluminum billet 40 (FIG. 4) through the die mold 4 in the extrusion cycle as described above, an extruded shape having a predetermined shape can be obtained. Usually, it is not difficult to extrude the required shape as long as the extrusion conditions of a die temperature of around 450 ° C. and a billet temperature of around 480 ° C. are maintained. However, in rare cases, the billet 40 is clogged at the entrance of the die 4a, and a situation in which the shape material does not come out occurs. The billet 40 clogged at the entrance of the die 4a is in a state where only the tip portion is deformed, and thereafter the normal billet shape is held by the container liner 13. In this case, as shown in FIG. 6, the billet 40 that has started to be pushed is removed from the container 3, the die is exchanged, and the extrusion is restarted with a new billet. When the normal extrusion is completed, as shown in FIG. 2, the butts 7 at the rear end of the billet are cut off with a shear knife 25 and separated from the die mold 4. Since the tip could not be cut, the jammed billet could not be extruded immediately.

  In addition, if a flower blooms, the recovery operation similar to the billet clogging described in the previous paragraph must be performed, and the flower bloom part must be removed by air chisel etc. become longer.

  The conventional method of extruding aluminum profiles is a method of extruding one or more billets with a single die mold. About 20 to 50 m of profiles extruded from one billet are made into several tens of lines. Cutting was done. In this extrusion method, for example, it is difficult to respond to ordering of one or several other types of small parts, and it is conceivable to shorten the billet length if it is intended to respond. However, short billets became overheated, and it was necessary to change the heating program in order to avoid this, and even if this was done, the temperature of the furnace became unstable. Eventually, the entire amount of one billet was extruded, and the unnecessary part was often used as a melting raw material.

Accordingly, an object of the present invention is to devise a shear cutting means capable of solving the above-mentioned various problems and to provide a novel extrusion cycle.
In the case of normal butts cutting, the billet does not remain on the container side, but the inventors have made the billet break with the die mold side so that the billet intentionally remains on the container side. As a result, a deformed protrusion was formed at the tip of the billet on the container side. When the deformed protrusion is rotated 90 ° and observed from the side, it is shaped like a sharp mountain or iceberg. As a result of a test in which the deformed protrusion was cut off with a shear knife, it was found that a smooth surface close to a mirror surface was formed. Further, the aluminum material remaining on the die side is not the conventional butts shape but is also the above shape, but it could be cut with a shear knife as in the conventional case. Furthermore, crushing by compression was also tested as a processing method for the container-side deformed protrusion. Furthermore, the cutting of the container-side deformed protruding portion was also tested using a cleaning box that was conventionally used for die change. Both tests were successfully completed and a new extrusion cycle could be created.

The present invention is broadly divided into the following methods:
First to third methods—Shear knives are provided on the die mold side and the container side, respectively, to cope with billet clogging, flower bloom treatment, and one billet multi-form extrusion.
4th to 6th methods-There is no die hole for shape forming and a blind die dedicated to crushing the deformed projecting portion is provided on the container side; corresponding to billet clogging, flowering treatment, and 1 billet multiple shape extrusion.
Seventh to ninth methods—A die mechanism is provided with a shear mechanism, which handles billet clogging, flower bloom processing, and one billet multi-form extrusion.

  In the first method of the present invention, an aluminum billet is charged in a container, and the aluminum billet is extruded from a die mold by applying pressure to the aluminum billet with a stem. In addition, the container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold and the container is cut off with a shear knife. The extrusion is resumed by the billet remaining in the container.

  The second method of the present invention is a method for extruding an aluminum profile in which an aluminum billet is charged into a container and the aluminum billet is pressed by a stem and extruded from a die mold. The aluminum material is a gap between the die mold and the container. The aluminum material that retracts the container and the stem from the die mold and breaks the aluminum billet between the die mold and the container, and then protrudes from the die mold and the container when leaking from the die Is cut off with a shear knife, and extrusion is restarted with a billet remaining in the container.

  According to a third method of the present invention, an aluminum shape of a predetermined length is extruded in an aluminum shape extruding method in which an aluminum billet is charged into a container, and pressure is applied to the aluminum billet by a stem to extrude it from a die. The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold and the container is cut with a shear knife. The die is dropped, the die mold is replaced, and the extrusion is restarted by the billet remaining in the container.

  In the first to third methods of the present invention, the container is retracted to a predetermined position, the billet is broken between the container and the die mold, and cut with an aluminum material shear knife at the deformed tip of the container-side billet to be smooth. By making the surface, the normal billet in the container is reused. Since a shear knife for batting on the normal die mold side is provided, in existing equipment, a shear knife is added to perform shear knife cutting on the container side. In the case of new capital investment, it is possible to handle with one shear knife.

  In the fourth method of the present invention, when an aluminum billet is clogged in a die mold, an aluminum billet is charged into a container, and the aluminum billet is extruded from a die mold by applying pressure to the aluminum billet with a stem. The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife. The aluminum material protruding from the side is compressed and crushed, and then extrusion is resumed by the billet remaining in the container.

  According to a fifth method of the present invention, an aluminum material is extruded from a die mold by inserting an aluminum billet into a container and applying pressure to the aluminum billet with a stem. The aluminum material is a gap between the die mold and the container. When the container and the stem are leaked from the die, the container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is shear knife The aluminum material protruding from the container side is compressed and crushed, and then the extrusion is resumed by the billet remaining in the container.

  In the sixth method of the present invention, an aluminum billet is extruded by inserting an aluminum billet into a container and applying pressure to the aluminum billet by a stem and extruding the die from a die. The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife, The aluminum material protruding from the side is compressed and crushed, then the die mold is replaced, and extrusion is resumed by the billet remaining in the container.

  In the fourth to sixth methods of the present invention, the container is retracted to a predetermined position, the billet is broken between the container and the die mold, and cut with a shear knife for the batting process on the normal die mold side. And the deformed tip of the billet on the container side is compressed and crushed to form a smooth surface, whereby the normal billet in the container is reused. In order to crush the deformed tip, a die box is usually used for die change, and slides forward and backward between the container and the end platen. It is preferable to install a blind die without squeezing and thereby perform crushing. Of course, in the case of new capital investment, a dedicated blind die may be installed.

  In the seventh method of the present invention, when an aluminum billet is clogged in a die mold, an aluminum billet is charged into a container, and the aluminum billet is extruded from a die mold by applying pressure to the aluminum billet with a stem. The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife. An aluminum material protruding from the container side is cut off by sliding a die mold exchanging device provided with a blade, and then extrusion is resumed by a billet remaining in the container.

  In an eighth method of the present invention, an aluminum billet is inserted into a container, and the aluminum billet is extruded from a die by applying pressure to the aluminum billet with a stem. When leaking to the outside from the gap, the container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is removed from the shear mold. The aluminum material protruding from the container side is cut by sliding the die die changer provided with a shear blade by cutting with a knife, and then the extrusion is resumed by the billet remaining in the container.

  According to a ninth method of the present invention, in the method of extruding an aluminum shape, an aluminum billet is extruded into a container, and the aluminum billet is extruded from a die by applying pressure to the aluminum billet with a stem. The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife, The aluminum material protruding from the container side is cut off by sliding a die mold exchanging device provided with a blade, then the die mold is replaced, and extrusion is resumed by the billet remaining in the container. And

In the seventh to ninth methods of the present invention, the container is retracted to a predetermined position, the billet is broken between the container and the die mold, and shear knife cutting for batting on the normal die mold side is performed. The deformed tip of the billet on the container side is cut off with a shear blade provided in the die changer to form a smooth surface, thereby reusing the normal billet in the container.
As a die changer, a shear knife may be attached to the die plate 52 (FIG. 5) disclosed in Patent Document 2.

However, the most preferable method is to use a die exchange box. The main points are as follows. The die exchange box is a slide type, and moves forward and backward in the middle between the die mold and the container, so that the force during this movement can be used for shearing. The die exchange box has an opening for holding the die die or a combination of the die die and the bolster in a replaceable manner. In addition, since the die exchange box always has an empty state in which no die is mounted, the box in this state can be used for the shear. Since this opening has a hook-shaped holding part that reinforces the iron box etc. so as to hold a die mold etc., it is gripped from the periphery by the box and has enough strength to withstand the shear . Further, when this hook-shaped reinforcing portion is used for the shear, the box body is not damaged. Moreover, the hook-shaped holding part can be used as it is in the existing equipment.
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

The specific example of the shear knife used by the 1st-3rd method of this invention is shown in FIG. 7 (side view) and FIG. 8 (plan view seen from the container side). As shown in these drawings, when two shear knives 25 and 42 are mounted on the same shear fixing part 24 so as to face each other, the conventional shear mechanism 20 (FIG. 3) can be used as it is, and the container side There is no need to add shear knife driving means. 7 and 8, 36 is an overhang portion for fixing the die side shear knife 25, 37 is a bolt hole for fixing the die side shear knife 42, 38 is a bolt hole for fixing the overhang portion, and 43 is It is a bolt hole for fixing the container side shear 42. In the shear knife shown in FIG. 7, a notch is provided in the existing shear fixing part 24 to fix the container-side shear knife 24, but the die-side shear knife 25 may be fixed to the notch part. In addition, the difference in the installation height of the shear knives 25 and 42 is determined in consideration of the simultaneous cutting described later. Further, the lateral width (Ws) of the shear knife 25 on the die side shown in FIG. 8 is sufficient to cut off the flower blooms, and a very small part of the width is used for cutting off the butts.
Hereinafter, the first method will be specifically described with reference to FIGS.

When the mold clogging occurs, the extrusion is temporarily stopped, and the container 3 and the stem (not shown) are separated from the die 4 as shown in the side view of FIG. The material breaks in between, and protrusions 41 and 48 are generated. The protrusion 41 is generated on the die side and has an irregular shape although it is slightly smaller than the butts. On the other hand, the protrusion 48 is generated on the container side. Subsequently, as shown in FIG. 10, the projecting portion 41 is cut by a normal shear knife 25 for cutting a batt to form a cut piece 41a. Before or after this, the projecting portion 48 on the container side is cut and cut into a piece 48a.
When the shear knife shown in FIGS. 8 and 9 is used, the separation distance (d) shown in FIG. 9 is made substantially equal to the width (W) of the shear knife. That is, d> W, and this difference is determined in such a way that the shear knife does not hit the extruder in consideration of the downward swing of the shear knife. If it does in this way, both protrusions 41 and 48 can be cut off by one operation.

  When flower bloom occurs, when the container 3 and the stem (not shown) are separated from the die 4 in the same manner as in FIG. 9, the projecting portion 44 and the container side projecting portion 48 due to flower bloom are generated as shown in FIG. (See FIG. 12). According to the second method of the present invention, this flowering process is cut by the die-side shear knife 25, while the container-side protruding portion 42 is processed by the method described in FIG.

  The third method of the present invention is basically the same as the method described with reference to FIGS. However, after the predetermined length of the profile has been extruded, the extrusion is interrupted to obtain the state shown in FIG. Thereafter, the operations described with reference to FIGS.

  The fourth to sixth methods of the present invention are different from the first to third methods of the present invention in the process of FIG. That is, in the fourth to sixth methods, the mold 45 for compressing and crushing the container side protruding portion 48 with the cylinder 46 is used as shown in the plan view of FIG. 13 without using a shear knife as shown in FIG. Slide to the position facing the billet 40. A specific example of the mold 45 is, for example, an iron block having the same diameter as the billet and a thickness of 1/2 to 2/3 of the diameter. The container 3 is moved forward together with the billet 40, and the protrusion 48 is formed. Crush. In addition, before and after the processing of the protrusions on the container side and the die side is arbitrary.

  The seventh to ninth methods of the present invention are different from the first to third methods of the present invention in the process of FIG. That is, the seventh to ninth methods use the bowl-shaped holding portion of the die box without using a shear knife as shown in FIG. 14 is a rear view of the die box as seen from the container side, and FIG. 15 is a plan view. In the figure, 60 is a box of the die box, 61 is a die holding hole, and 62 is a flange for reinforcing the holding hole. Show. The flange 62 protrudes from the box 60 by about 5 mm (h = 5 mm). In a state where this die box does not hold the die, the die box is slid as shown in FIG.

  First, according to the first, fourth, and seventh methods of the present invention, when the billet is clogged, it is not necessary to replace the billet, which has been performed by the conventional return method, and it is necessary to discard the billet held in the container as scrap. Disappear. Specifically, conventionally, billets of about 600 mm have been discarded, but according to the method of the present invention, about 50 mm may be discarded.

  Next, also in the case of flower bloom, according to the second, fifth and eighth methods of the present invention, when the billet is broken between the container and the die mold as described above, the flower mold portion and the deformed protrusion are formed on the die mold. Since this part remains, it is not necessary to manually remove the flowered part if it is cut at once with a shearing knife on the die side.

  Finally, in the case of the third, sixth, and ninth methods of the present invention in which one billet / multiple shape material extrusion is performed, the normal billet remaining in the container is used to extrude with a new shape / size material. This eliminates the need to cut billets short.

It is a figure explaining the aluminum profile extrusion process by an extruder. It is a figure explaining the process of cut | disconnecting butts after completion | finish of extrusion of one billet at the process of FIG. It is a figure which shows the principal part of an extruder. It is a figure which shows the die part of the extruder of FIG. It is explanatory drawing of the method of processing when the conventional type clogging arises. It is a figure of a die slide. It is a side view of the shear knife which concerns on one Example used with the 1st-3rd method of this invention. It is the front view seen from the die | dye side of the shear knife of FIG. In the 1st, 3, 4, 6, 7, 9 method of this invention, it is a figure of the process of forming a protrusion part in the aluminum raw material of a die side and a container side. It is explanatory drawing of the process of cutting off the back die side protrusion part of FIG. It is explanatory drawing of the process of cutting off the rear container side protrusion part of FIG. It is explanatory drawing of the process of processing a flower bloom in the 2nd, 5th, 8th method of this invention. In the 4th-6th method of this invention, it is explanatory drawing of the process of crushing a container side protrusion part. In the 7th-9th method of this invention, it is the rear view which looked at the die box used from the container side. FIG. 15 is a plan view of FIG. 14. It is a figure explaining the example of the 7th-8th method of this invention explaining the process replaced with the process of FIG. 11 using the die box shown by FIG.

Explanation of symbols

1 cylinder 2 ram 3 container 4 dice
4a Die mold 5 Extruded material 6 Stem 7 Butts 8 Shear knife 16 End platen 20 Shear mechanism 30 Bolster 25 Shear knife (die side)
40 Billet 41 Die side protrusion 42 Shear knife (container side)
45 Mold 48 Container side protrusion 60 Die box box

Claims (12)

In an extrusion method of an aluminum profile in which an aluminum billet is charged into a container and the aluminum billet is pressed by a stem and extruded from a die mold, when the aluminum billet is clogged into the die mold, the container and the stem are The aluminum billet is retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold and the container is cut off with a shear knife, and the billet remaining in the container A method for extruding an aluminum profile, characterized by restarting extrusion. In the extrusion method of an aluminum profile, in which an aluminum billet is charged into a container and pressure is applied to the aluminum billet with a stem and extruded from a die mold, when the aluminum material leaks outside from the gap between the die mold and the container, The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold and the container is cut off with a shear knife, and the container is cut. A method for extruding an aluminum profile, characterized in that extrusion is resumed by a billet remaining inside. In an extrusion method of an aluminum profile in which an aluminum billet is charged into a container and pressure is applied to the aluminum billet by a stem and extruded from a die, when the aluminum profile of a predetermined length is extruded, the container and the The stem is retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold and the container is cut off with a shear knife, and the die mold is replaced. A method for extruding an aluminum profile, characterized in that the extrusion is restarted with a billet remaining in the container. The method of extruding an aluminum profile according to any one of claims 1 to 3, wherein the shear knife is provided on each of a die die side and a container side. 5. The method of extruding an aluminum profile according to claim 4, wherein each shear knife is driven by the same driving means. 6. The aluminum profile according to claim 5, wherein the protrusions are cut off at a time by separating the container and the die mold by an interval substantially equal to the interval between the respective shear knives. Extrusion method. In an extrusion method of an aluminum profile in which an aluminum billet is charged into a container and the aluminum billet is pressed by a stem and extruded from a die mold, when the aluminum billet is clogged into the die mold, the container and the stem are The aluminum billet is retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife, and the aluminum material protruding from the container side is removed. A method for extruding an aluminum profile, characterized by compressing and crushing, and then restarting extrusion with a billet remaining in the container. In the extrusion method of an aluminum profile, in which an aluminum billet is charged into a container and pressure is applied to the aluminum billet with a stem and extruded from a die mold, when the aluminum material leaks outside from the gap between the die mold and the container, The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife and protruded from the container side. A method of extruding an aluminum profile, comprising compressing and crushing an aluminum material, and then restarting extrusion with a billet remaining in the container. In an extrusion method of an aluminum profile in which an aluminum billet is charged into a container and pressure is applied to the aluminum billet by a stem and extruded from a die, when the aluminum profile of a predetermined length is extruded, the container and the The stem is retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife, and the aluminum material protruding from the container side is removed. A method for extruding an aluminum profile, characterized by compressing and crushing, then exchanging a die, and restarting extrusion with a billet remaining in the container. In an extrusion method of an aluminum profile in which an aluminum billet is charged into a container and the aluminum billet is pressed by a stem and extruded from a die mold, when the aluminum billet is clogged into the die mold, the container and the stem are Retract from the die mold and break the aluminum billet between the die mold and the container, then cut the aluminum material protruding from the die mold with a shear knife, and replace the die mold with a shear blade A method of extruding an aluminum profile, characterized in that the aluminum material protruding from the container side is cut off by sliding the apparatus, and then the extrusion is resumed by a billet remaining in the container. In the extrusion method of an aluminum profile, in which an aluminum billet is charged into a container and pressure is applied to the aluminum billet with a stem and extruded from a die mold, when the aluminum material leaks outside from the gap between the die mold and the container, The container and the stem are retracted from the die mold and the aluminum billet is broken between the die mold and the container, and then the aluminum material protruding from the die mold is cut off with a shear knife to provide a shear blade A method of extruding an aluminum profile comprising: cutting an aluminum material protruding from the container side by sliding a die changer and then restarting extrusion with a billet remaining in the container. In an extrusion method of an aluminum profile in which an aluminum billet is charged into a container and pressure is applied to the aluminum billet by a stem and extruded from a die, when the aluminum profile of a predetermined length is extruded, the container and the Retract the stem from the die mold and break the aluminum billet between the die mold and the container, then cut the aluminum material protruding from the die mold with a shear knife and replace the die mold with a shear blade A method of extruding an aluminum profile, characterized in that the aluminum material protruding from the container side is cut off by sliding the apparatus, the die mold is then exchanged, and the extrusion is resumed by the billet remaining in the container .

Images