JP5512320B2 - Extruded material manufacturing method - Google Patents

Description

  The present invention relates to a method for producing an extruded material for simultaneously producing a plurality of extruded materials, and an extrusion rear surface equipment. In the present specification, “upstream” and “downstream” mean upstream and downstream in the extrusion direction of the extruded material, respectively.

  In order to improve the productivity of the extruded material, a method of simultaneously manufacturing a plurality of extruded materials is known. In this manufacturing method, generally, as shown in FIG. 10, a plurality of (two in the same figure) extruded members 130 projecting from a plurality of extrusion holes of an extrusion die (not shown) of the extruder 120 are attached to a puller. A plurality of extruded materials 130 are simultaneously extruded by the extruder 120 while leading the plurality of extruded materials 130 in the extrusion direction T with the leading conductor 110 attached thereto. Manufactured.

  In the figure, 107 is a cooling tank disposed in the vicinity of the downstream side of the extrusion die of the extruder 120, 108 is a cutting means such as an initial shear, and 102 is a transport table extending in the extrusion direction T. The conveyance table 102 includes an initial table 102a disposed in the vicinity of the downstream side of the extrusion die of the extruder 120, and a run-out table 102b continuously disposed on the initial table 102a. As the leading conductor 110, for example, pullers disclosed in Japanese Patent Application Laid-Open No. 8-197133 (Patent Document 1), Japanese Patent Application Laid-Open No. 7-80541 (Patent Document 2), and the like are known.

  However, according to this manufacturing method, as shown in the figure, during extrusion, the extruded material 130 bends due to uneven cooling of the extruded material 130 or unevenness from the extrusion holes of the extrusion die, As a result, the two extruded materials 130 and 130 that are close to each other may come into contact with each other and the extruded material 130 may be scratched.

  In order to solve this problem, Japanese Patent Application Laid-Open No. 7-24523 (Patent Document 3) discloses a method of arranging a spacer between both extruded materials.

JP-A-8-197133 Japanese Patent Laid-Open No. 7-80541 JP 7-24523 A

  However, in the above method, when the extruded material comes into contact with the spacer, the extruded material may also be damaged.

  The present invention has been made in view of the above-described technical background, and an object thereof is to prevent the extrudate from being damaged during extrusion in a method for producing an extrudate that simultaneously produces a plurality of extrudates. It is providing the manufacturing method of an extrusion material, and the extrusion back surface equipment used for this manufacturing method.

  The present invention provides the following means.

[1] A leading conductor attaching step of attaching a leading conductor for leading the plurality of extruded materials in the extrusion direction to the tip portions of the plurality of extruded materials protruding from the plurality of extrusion holes of the extrusion die of the extruder;
A leading step of simultaneously extruding the plurality of extruded materials by the extruder while guiding the plurality of extruded materials in the extrusion direction by the leading conductors attached to the leading ends of the plurality of extruded materials;
A method for producing an extruded material comprising
In the leading conductor mounting step,
The interval between the two extruding materials protruding from the two extruding holes is larger than the interval between the two extruding holes adjacent to each other in the plurality of extruding holes. A method for producing an extruded material, wherein a tip conductor is attached to the tip of the plurality of extruded materials.

[2] A preconductor attaching step of attaching a preconductor that leads the plurality of extruded materials in the extrusion direction to the tip portions of the plurality of extruded materials protruding from the plurality of extrusion holes of the extrusion die of the extruder;
A leading step of simultaneously extruding the plurality of extruded materials by the extruder while guiding the plurality of extruded materials in the extrusion direction by the leading conductors attached to the leading ends of the plurality of extruded materials;
A method for producing an extruded material comprising
In the lead process,
The distance between the two extruded material tips projecting from two adjacent extrusion holes in the plurality of extrusion holes is increased as the leading distance of the plurality of extruded materials by the leading conductor increases. And a plurality of extruded materials are extruded at the same time.

[3] In the leading step, the plurality of extruded materials are simultaneously extruded while being conveyed in the extrusion direction on a conveyance table extending in the extrusion direction,
The preceding item 1 or 2 including a transfer step of transferring the plurality of extruded materials on the transport table to a predetermined table disposed on one side of the transport table after the plurality of extruded materials are simultaneously extruded. The manufacturing method of the extruded material of description.

[4] At the time of extruding the plurality of extruded materials at the same time, the plurality of extruded materials are attached to the front ends of the plurality of extruded materials protruding from the plurality of extrusion holes of the extrusion die of the extruder. Extrusion rear surface equipment having a leading conductor leading to
The leading conductor includes a plurality of chuck portions that chuck the tip portions of the plurality of extruded materials, and the interval between two adjacent chuck portions in the plurality of chuck portions can be changed. Extrusion rear surface equipment characterized by being configured to.

  [5] The extrusion rear surface equipment according to [4], wherein the leading conductor is configured to change an interval between the two chuck portions while leading the plurality of extruded materials.

  The present invention has the following effects.

  According to the method for manufacturing an extruded material according to the invention of [1], the two extruded materials projecting from the two extruded holes rather than the interval between the two extruded holes adjacent to each other in the plurality of extruded holes. By attaching the leading conductor to the leading end portions of the plurality of extruded materials so that the distance between the leading end portions becomes larger, it becomes difficult for the extruded materials to contact each other in the leading step. Thereby, the damage of the extrusion material by the contact of extrusion materials can be prevented.

  According to the invention of [2], the interval between the tip portions of the two extruded materials protruding from the two adjacent extrusion holes in the plurality of extrusion holes is set to be the distance between the plurality of extruded materials by the leading conductor. By increasing the leading distance as it becomes longer, it becomes difficult for the extruded materials to contact each other. Thereby, the damage of the extrusion material by the contact of extrusion materials can be prevented.

  According to the invention of [3], after a plurality of extruded materials are extruded at the same time, the interval between the extruded materials is increased, so that the plurality of extruded materials on the transport table are transferred to a predetermined table. At the same time, contact between the extruded materials can be prevented.

  According to the invention of [4], it is possible to provide an extrusion rear surface equipment suitably used in the method for producing an extruded material according to the present invention.

  According to the invention of [5], it is possible to provide an extrusion rear surface equipment that is preferably used in the method of manufacturing an extruded material according to the invention of [2] among the methods of manufacturing an extruded material according to the present invention.

FIG. 1A is a method for producing an extruded material using an extrusion rear surface equipment according to the first embodiment of the present invention, and the equipment after the extrusion in a state in which a leading conductor is attached to the leading ends of two extruded materials. FIG. FIG. 1B is a schematic plan view showing the extruder and the leading conductor in the state of FIG. 1A. It is the cross-sectional view (upper) of the extrusion die of an extruder, and the front sectional view (lower) of the front-end | tip part of the extrusion material on a conveyance table. FIG. 2A is a schematic plan view of the extrusion rear surface equipment in a state in which the extruded material is being guided by the leading conductor. FIG. 2B is a schematic plan view showing the extruder and the leading conductor in the state of FIG. 2A. FIG. 3 is a schematic plan view of the extrusion rear surface equipment in a state after the extruded material is extruded by the extruder. FIG. 4 is a method for manufacturing an extruded material using the extrusion rear surface equipment according to the second embodiment of the present invention. FIG. 1B shows a state in which a leading conductor is attached to the tip of two extruded materials. It is a schematic plan view of a corresponding extruder and a leading conductor. FIG. 5A is a schematic plan view of the extruder and the leading conductor corresponding to FIG. 2B in a state in which the extruded material is being guided by the leading conductor. FIG. 6 is a cross-sectional view (upper) of the extrusion die of the extruder according to the first modification of the above embodiment, and a front view (lower) of the tip portion of the extruded material on the transport table. FIG. 7 is a cross-sectional view (upper) of the extrusion die of the extruder according to the second modification of the above embodiment, and a front view (lower) of the tip of the extruded material on the transport table. FIG. 8 is a cross-sectional view (upper) of the extrusion die of the extruder according to the third modified embodiment of the above embodiment, and a front view (lower) of the tip of the extruded material on the transport table. FIG. 9A is a cross-sectional view (upper) of an extrusion die of an extruder according to a fourth modified embodiment of the above embodiment, and a front view (lower) of a tip portion of the extruded material on the conveyance table. FIG. 9B is a cross-sectional view (upper) of the extrusion die of the extruder according to the fifth modified embodiment of the above embodiment, and a front view (lower) of the front end portion of the extruded material on the transport table. FIG. 10 is a schematic plan view of the extrusion rear surface equipment in a state in which the two extruded materials are being led by the leading conductor, which is a manufacturing method of the extruded material using the conventional extrusion rear surface equipment.

  Next, several embodiments of the present invention will be described below with reference to the drawings.

  1A to 3 are views for explaining an extrusion rear surface equipment and a method of manufacturing an extruded material according to the first embodiment of the present invention. In FIG. 1A, 1 is an extrusion back surface equipment, 30 is an extrusion material. In these drawings, the extruded material 30 is indicated by dot hatching so as to be easily distinguished from other members.

  The material of the extruded material 30, that is, the extruded material is a metal, and specifically, aluminum (including an alloy thereof; the same applies hereinafter).

  The extrusion rear surface equipment 1 is for sequentially conveying, cooling, straightening, and cutting a plurality of extruded materials 30 that are simultaneously extruded from the extruder 20. In the first embodiment, the number of extruded materials 30 that are extruded simultaneously is two.

  As shown in FIGS. 1B and 2B, an extruder 20 includes a container 21 loaded with a metal billet (more specifically, an aluminum billet) 31 as an extrusion material, and a stem that pressurizes the billet 31 in the container 21 in the extrusion direction T. 22, an extrusion die 24, and an end platen 23. 1B and 2B, for convenience of explanation, the transfer table 2 of the extrusion rear surface equipment 1 is not shown.

  As shown in FIG. 1C, the extrusion die 24 is provided with two extrusion holes 25 penetrating in the extrusion direction T and arranged side by side at a distance from each other. The extrusion hole 25 forms the cross-sectional shape of the billet 31 into a desired cross-sectional shape of the extrusion material 30 by passing the billet 31 through the extrusion hole 25, and thus the cross-sectional shape of the extrusion hole 25 is the extrusion material 30. Corresponds to the cross-sectional shape. In this embodiment, the cross-sectional shape of the extrusion hole 25 is a circular shape, and therefore the cross-sectional shape of the extruded material 30 is a circular shape. However, in the present invention, the cross-sectional shape of the extrusion hole 25 and the cross-sectional shape of the extruded material 30 are not limited to being circular, and may be, for example, a shape that is asymmetrical to the left and right or up and down. It may be hollow. Moreover, the space | interval a between both the extrusion holes 25 and 25 is 50-100 mm, for example. However, in the present invention, the interval a is not necessarily limited to the above range, and is appropriately set according to the cross-sectional shape, cross-sectional dimension, and the like of the extruded material 30.

  As shown in FIG. 1B, the end platen 23 is arranged in a manner surrounding both the extrusion holes 25 in the vicinity of the downstream side of the extrusion die 24.

  As shown in FIGS. 1A, 2 </ b> A, and 3, the extrusion rear surface equipment 1 includes a transport table 2 that transports the extruded material 30 extruded by the extruder 20 in the extrusion direction T. This conveyance table 2 is arranged to extend straight from the vicinity of the exit of the end platen 23 of the extruder 20 in the extrusion direction T. The initial table 2a and the run-out table 2b arranged sequentially in the extrusion direction T are arranged. Have. The extruded material 30 extruded by the extruder 20 is transported by sequentially running on the initial table 2a and the run-out table 2b.

  Known initial tables 2a and run-out tables 2b are used. An example of these configurations will be described as follows.

  The initial table 2a and the run-out table 2b are each configured by a plurality of transport rollers 2z arranged in the extrusion direction T. The conveying roller 2z is rotatable or is driven to rotate in synchronization with the extrusion speed of the extruded material 30.

  On the initial table 2a and the runout table 2b, cooling fans (not shown) as cooling means for cooling the extruded material 30 are arranged side by side in the extrusion direction T. The extruded material 30 extruded by the extruder 20 is cooled by these cooling fans when traveling sequentially on the initial table 2a and the run-out table 2b. At this time, in the conventional method, when the distance a between the two extrusion holes 25 is not more than 0.7 m, each extrusion material 30 is extruded to the other by the radiant heat from the two extrusion materials 30 extruded simultaneously. A temperature gradient is generated in which the temperature closer to the material becomes higher than the temperature on the far side, and the extruded materials 30 are bent by the difference in thermal expansion caused by the temperature gradient, and the extruded materials 30 are likely to contact each other. Moreover, the initial table 2a is arrange | positioned so that the cooling tank 7 which initially cools the extrusion material 30 may be passed.

  On one side of the left and right sides of the runout table 2b, a cooling table 3, a stretch table 4 and a saw charge table 5 are sequentially arranged in parallel to the runout table 2b.

  The cooling table 3 forcibly cools the two extruded materials 30 arranged on the cooling table 3 at once, and includes a plurality of cooling fans (not shown).

  The stretch table 4 is a table on which the extruded material 30 is placed when the extruded material 30 is straightened. Reference numerals 4a and 4a denote stretchers (head stock and tail stock) for straightening the extruded material 30.

  The saw charge table 5 collectively feeds the two extruded materials 30 to a cutting machine (for example, a shearing machine or a saw cutting machine) that collectively cuts the two extruded materials 30 into a predetermined length.

  Between the run-out table 2b and the cooling table 3, a plurality of belt conveyors 6A as transfer means are arranged. These belt conveyors 6A are configured to transfer two extruded materials 30 on the runout table 2b from the runout table 2b to the cooling table 3 in a lump.

  Further, the extrusion rear surface equipment 1 includes a plurality of belt conveyors 6B as transfer means for sequentially transferring the two extruded materials 30 on the cooling table 3 from the cooling table 3 to the stretch table 4 and the saw charge table 5. I have. If it explains in full detail, the cooling table 3 and the stretch table 4 are comprised from this belt conveyor 6B.

  Furthermore, as shown in FIG. 1B, the extrusion rear surface equipment 1 includes a leading conductor 10 that leads both extrusion materials 30 in the extrusion direction T when the two extrusion materials 30 are extruded simultaneously. The leading conductor 10 is made of a puller in the present embodiment, and is attached to the tip end portions of the two extruded materials 30 protruding from the two extrusion holes 25 of the extrusion die 24, and is pushed in both the extruded materials 30 in the extrusion direction T. The two extruded materials 30 are collectively led in the extrusion direction T in a state where the tensile force is applied. Therefore, a tension device (not shown) for applying a tensile force in the extrusion direction T to both extruded materials 30 is connected to the leading conductor 10. The leading conductor 10 leads both extruded materials 30 in the extrusion direction T while traveling on the transport table 2.

  The leading conductor 10 is mounted with two chuck portions 11 that chuck the tip portions of the two extruded materials 30 in order to be attached to the tip portions of the two extruded materials 30. Each chuck | zipper part 11 is comprised so that the space | interval between both the chuck | zipper parts 11 can be changed with the mechanism using fluid pressure cylinders (not shown), such as a hydraulic cylinder and a gas cylinder, for example.

  Next, the manufacturing method of the extrusion material 30 using the extrusion back surface installation 1 of the said 1st Embodiment is demonstrated below.

  As shown in FIGS. 1A and 1B, first, the distance between the chuck portions 11 of the leading conductor 10 is set to be larger than the distance a between the extrusion holes 25 of the extrusion die 24 (see FIG. 1C).

  Next, the heated billet 31 loaded in the container 21 of the extruder 20 is pressurized in the extrusion direction T by the stem 22. Accordingly, the two extruded materials 30 are simultaneously projected in the extrusion direction T from the two extrusion holes 25 of the extrusion die 24. And if the front-end | tip part of both extrusion materials 30 comes out a little from the exit of the end platen 23, the front-end | tip part of both extrusion material 30 will be chucked simultaneously by the both chuck | zipper parts 11 of the tip conductor 10, and it will become the front-end | tip part of both extrusion material 30 The leading conductor 10 is attached. This process is referred to as a “lead conductor attaching process”. At this time, since the distance between the chuck portions 11 of the leading conductor 10 is larger than the distance a between the two extrusion holes 25, the distance b between the tip portions of the two extrusion materials 30 is between the two extrusion holes 25. Is larger than the interval a (that is, b> a). This interval b is not particularly limited, and is appropriately set according to the length, cross-sectional shape, cross-sectional dimension, etc. of the extruded material 30, but in a range of 2 to 7 times the interval a. It is particularly desirable to set.

  Next, the container 21 is continued while leading the two extruded materials 30 in the extrusion direction T by the leading conductor 10 while maintaining a state where the distance between both the chuck portions 11 is larger than the distance a between both the extrusion holes 25. By pressing the inner billet 31 in the extrusion direction T by the stem 22, the two extruded materials 30 are extruded simultaneously. This process is called “leading process”.

  Then, as shown in FIGS. 2A and 2B, the leading conductor 10 travels from the upstream side to the downstream side on the transport table 2, and both extruded portions 30 are chucked at the tip portions of the leading conductor 10 by the chuck portion 11 of the leading conductor 10. In this state, it is led by the leading conductor 10 and travels in the extrusion direction T from the upstream side to the downstream side on the transport table 2. At this time, as shown in FIG. 1C, the distance b between the two ends of the extruded material 30 on the transport table 2 is larger than the distance a between the two extrusion holes of the extrusion die 24.

  When both extruded materials 30 are extruded to a predetermined length, both extruded materials 30 are collectively cut at a position near the outlet of the end platen 23 by a cutting machine 8 such as an initial shear disposed near the outlet of the end platen 23. Then, as shown in FIG. 3, when the two extruded members 30 are entirely conveyed to the runout table 2 b, the leading conductor 10 is removed from the leading end portions of the two extruded members 30 by releasing the chuck by the two chuck portions 11 of the leading conductor 10. Remove.

  Next, both extruded materials 30 on the runout table 2b are collectively moved from the runout table 2b to the cooling table 3 by a plurality of belt conveyors 6A as transfer means in a state where the distance between the extruded materials 30 is maintained. Transport. This process is called “transfer process”.

  Both extruded materials 30 transferred onto the cooling table 3 are forcibly cooled, and then sequentially transferred onto the stretch table 4 and the saw charge table 5 by a plurality of belt conveyors 6B as transfer means. Then, the two extruded materials 30 on the saw charge table 5 are collectively cut into a predetermined length by the cutting machine 5a.

  The manufacturing method of the extruded material 30 using the extrusion rear surface equipment 1 of the first embodiment has the following advantages.

  In the leading conductor mounting step, the leading conductor 10 is extruded in both directions so that the spacing b between the tip portions of the two extruded materials 30 is larger than the spacing a between the two extrusion holes 25 of the extrusion die 24. Since it attaches to the front-end | tip part of the material 30, it becomes difficult for the extrusion materials 30 to contact each other in a lead process. Thereby, the extrudate 30 can be prevented from being damaged due to the contact between the extrudates 30, and thus the extrudate 30 having a good appearance can be obtained.

  Further, since the interval between the two extruded materials 30 increases after the two extruded materials 30 are extruded at the same time, the two extruded materials 30 on the run-out table 2b of the transport table 2 are collectively put on the cooling table 3. Also during transfer, contact between the extruded materials 30 can be prevented.

  Further, since the interval between the two chuck portions 11 of the leading conductor 10 can be changed, both the interval b between the tip portions of the extruded materials 30 are larger than the interval a between the extrusion holes 25. The leading conductor 10 can be attached to the tip of the extruded material 30.

  In the first embodiment, as shown in FIG. 1C, the extrusion holes 25 of the extrusion die 24 are given the symbols “A” and “B”, respectively, and the corresponding extruded materials extruded from the respective extrusion holes 25. When the reference numerals “A” and “B” are also given to the members 30, both extruded materials 30 are arranged side by side on the conveying table 2 as shown in FIG. Drive on.

  4 and 5 are diagrams illustrating a method for manufacturing an extruded material according to the second embodiment of the present invention. In these drawings, the same reference numerals are assigned to the same elements as those of the first embodiment. The second embodiment will be described below with a focus on differences from the first embodiment.

  In the second embodiment, the leading conductor 10 is formed between the two chuck portions 11 while leading the two extruded materials 30 by a mechanism using a fluid pressure cylinder (not shown) such as a hydraulic cylinder or a gas cylinder. It is comprised so that the space | interval of can be changed.

  As shown in FIG. 4, in the leading conductor attaching step, the distance a between the two extrusion holes 25 of the extrusion die 24 of the extruder 20 and the distance b between the tips of the two extruded materials 30 are equal. In addition, the leading ends of both extruded materials 30 are chucked by the chuck portions 11 of the leading conductors 10, and the leading conductors 10 are attached to the leading ends of the both extruded materials 30.

  Next, as shown in FIG. 5, in the leading step, the two conductors 30 are guided in the extrusion direction T by the leading conductor 10, and the distance b between the tip portions of the two extruded materials 30 is set to both the leading conductors 10. Both extrudates 30 are extruded simultaneously while gradually increasing as the leading distance of the extrudate 30 becomes longer.

  In this 2nd Embodiment, since both the extrusion materials 30 are extruded simultaneously, increasing the space | interval b between the front-end | tip parts of both the extrusion materials 30, extrusion materials 30 become difficult to contact. Thereby, the damage of the extrusion material 30 by the contact of the extrusion materials 30 can be prevented.

  In the said 1st and 2nd embodiment, although the manufacturing method of the extrusion material 30 in the case of manufacturing the two extrusion materials 30 simultaneously was shown, in this invention, the number of the extrusion materials 30 manufactured simultaneously is two. It is not limited to a certain thing, and may be three or more in addition. Some variations in the case where the number of the extruded materials 30 is three or more are shown below.

  FIG. 6 is a diagram for explaining the first modification. In the first modification, the extrusion die 24 is provided with three extrusion holes 25. These extrusion holes 25 are arranged side by side in the horizontal direction. a is an interval between the two extrusion holes 25 adjacent to each other.

  Here, the three extrusion holes 25 of the extrusion die 24 are marked with “A”, “B”, and “C”, respectively, and the corresponding extruded material 30 extruded from each extrusion hole 25 is also “A”. ”,“ B ”, and“ C ”, the extruded materials 30 are arranged side by side on the conveyance table 2 as shown in FIG. Run. The distance b between the tips of the two extruded materials 30 that are close to each other is larger than the corresponding distance a.

  FIG. 7 is a diagram illustrating a second modification. In the second modification, three extrusion holes 25 are provided in the extrusion die 24. These extrusion holes 25 are arranged at the positions of three vertices of an equilateral triangle centering on the central axis of the extrusion die 24 in a front view of the extrusion die 24. a is an interval between the two extrusion holes 25 adjacent to each other.

  Here, the three extrusion holes 25 of the extrusion die 24 are marked with “A”, “B”, and “C”, respectively, and the corresponding extruded material 30 extruded from each extrusion hole 25 is also “A”. ”,“ B ”, and“ C ”, the extruded materials 30 are arranged side by side on the conveyance table 2 as shown in FIG. Run. The distance b between the tips of the two extruded materials 30 that are close to each other is larger than the corresponding distance a.

  FIG. 8 is a diagram for explaining a third modification. In the third variation, the extrusion die 24 is provided with four extrusion holes 25. These extrusion holes 25 are arranged at the positions of four vertices of a substantially rhombus centered on the central axis of the extrusion die 24 in a front view of the extrusion die 24. a is an interval between the two extrusion holes 25 adjacent to each other.

  Here, the four extruding holes 25 of the extruding die 24 are marked with “A”, “B”, “C”, and “D”, respectively, and the corresponding extruded material 30 extruded from each extruding hole 25 is attached to the corresponding extruding material 30. Are also marked with “A”, “B”, “C”, and “D”, respectively, these extrusion materials 30 are arranged side by side on the transport table 2 as shown in FIG. Arranged and travels on the transport table 2. The distance b between the tips of the two extruded materials 30 that are close to each other is larger than the corresponding distance a.

  FIG. 9A is a diagram illustrating a fourth modification. In the fourth modification, four extrusion holes 25 are provided in the extrusion die 24. These extrusion holes 25 are arranged at the positions of four vertices of a square centering on the central axis of the extrusion die 24 in a front view of the extrusion die 24. a is an interval between the two extrusion holes 25 adjacent to each other.

  Here, the four extruding holes 25 of the extruding die 24 are marked with “A”, “B”, “C”, and “D”, respectively, and the corresponding extruded material 30 extruded from each extruding hole 25 is attached to the corresponding extruding material 30. Are also marked with “A”, “B”, “C”, and “D”, respectively, these extrusion materials 30 are arranged side by side on the transport table 2 as shown in FIG. Arranged and travels on the transport table 2. The distance b between the tips of the two extruded materials 30 that are close to each other is larger than the corresponding distance a.

  FIG. 9B is a diagram illustrating a fifth modification. In the fifth variation, the extrusion die 24 is provided with four extrusion holes 25. These extrusion holes 25 are arranged at the positions of four vertices of a square centering on the central axis of the extrusion die 24 in the front view of the extrusion die 24, that is, the same as the fourth modification.

  In the fifth modification, the four extruded materials 30 are arranged side by side on the conveyance table 2 and run on the conveyance table 2 as shown in the figure in the leading step. The distance b between the tips of the two extruded materials 30 that are close to each other is larger than the corresponding distance a.

  In the first to fifth modifications, the interval a between the two extrusion holes 25 adjacent to each other is the same for all intervals, but in the present invention, these intervals a are different. Also good.

  Although several embodiments and modifications of the present invention have been described above, the present invention is not limited to these forms, and various modifications can be made without departing from the scope of the present invention. is there.

  For example, the present invention may be a combination of the first embodiment and the second embodiment. That is, in the manufacturing method of the extruded material according to the present invention, in the leading conductor attaching step, the two extrusion holes 25 are more than the distance a between the two extrusion holes 25 adjacent to each other in the plurality of extrusion holes 25. The leading conductor 10 is attached to the leading end portions of the plurality of extruded materials 30 such that the distance b between the protruding tip portions of the two extruded materials 30 is larger, and in the leading step, the two extruded materials 30 are attached. A method of extruding a plurality of extruded materials 30 at the same time while increasing the distance b between the leading ends of the plurality of extruded materials 30 as the leading distance of the plurality of extruded materials 30 by the leading conductor 10 increases.

  Further, in the present invention, the extrusion rear surface equipment may include a storage table disposed between the stretch table 4 and the saw charge table 5.

  INDUSTRIAL APPLICABILITY The present invention can be used for an extruded material manufacturing method for simultaneously manufacturing a plurality of extruded materials and an extrusion rear surface equipment used in the manufacturing method.

1: Extrusion rear equipment 2: Transfer table 3: Cooling table (predetermined table)
6A: Belt conveyor (transfer means)
10: Lead conductor 11: Chuck part 20: Extruder 24: Extrusion die 25: Extrusion hole 30: Extrusion material T: Extrusion direction

Claims (4)

A leading conductor attaching step of attaching a leading conductor for leading the plurality of extruded materials in the extrusion direction to the tip portions of the plurality of extruded materials protruding from the plurality of extrusion holes of the extrusion die of the extruder;
A leading step of simultaneously extruding the plurality of extruded materials by the extruder while guiding the plurality of extruded materials in the extrusion direction by the leading conductors attached to the leading ends of the plurality of extruded materials;
A method for producing an extruded material comprising
In the lead process,
The distance between the two extruded material tips projecting from two adjacent extrusion holes in the plurality of extrusion holes is increased as the leading distance of the plurality of extruded materials by the leading conductor increases. And a plurality of extruded materials are extruded at the same time. In the leading step, the plurality of extruded materials are simultaneously extruded while being conveyed in the extrusion direction on a conveyance table extending in the extrusion direction,
Said plurality of extrusions of after extrusion simultaneously, wherein the plurality of extruded material transfer step a comprise that claim 1, wherein the transferring of the conveying table to the transport table predetermined table located on one side of the Method for producing extruded material. It is attached to the tip of a plurality of extruded materials protruding from a plurality of extrusion holes of an extrusion die of an extruder, and leads the plurality of extruded materials in the extrusion direction when extruding the plurality of extruded materials simultaneously. Extrusion rear equipment equipped with a leading conductor,
The leading conductor includes a plurality of chuck portions that chuck the tip portions of the plurality of extruded materials, and the interval between two adjacent chuck portions in the plurality of chuck portions can be changed. Extrusion rear surface equipment characterized by being configured to. The extrusion rear surface equipment according to claim 3 , wherein the leading conductor is configured to change an interval between the two chuck portions while leading the plurality of extruded materials.

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