JP2001121208A - Wall thickness control method of extruded shape - Google Patents
Wall thickness control method of extruded shapeInfo
- Publication number
- JP2001121208A JP2001121208A JP30050999A JP30050999A JP2001121208A JP 2001121208 A JP2001121208 A JP 2001121208A JP 30050999 A JP30050999 A JP 30050999A JP 30050999 A JP30050999 A JP 30050999A JP 2001121208 A JP2001121208 A JP 2001121208A
- Authority
- JP
- Japan
- Prior art keywords
- die
- holder
- extrusion
- extruded
- pressing force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Extrusion Of Metal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、押出成形時に生じるダ
イスの物理的又は熱的歪みに起因する押出形材の寸法変
動を抑制し、形状が安定化した押出形材を製造するため
の肉厚制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an extruded material having a stabilized shape by suppressing dimensional fluctuation of the extruded material caused by physical or thermal distortion of a die during extrusion molding. It relates to a thickness control method.
【０００２】[0002]
【従来の技術】コンテナから高温のビレットをダイスに
向けて押圧し、ダイスに設けた賦形空間を通過させるこ
とによって所定形状の押出形材が製造される。このと
き、押出形材の肉厚が押出成形中に変動しやすい。肉厚
の変動要因には、ダイス温度分布，押出加工力，コンテ
ナシール力等が挙げられる。たとえば、外気への熱放散
によってダイスが押出成形中に降温すると、熱的収縮で
賦形空間が狭くなり、押出サイクルの初期に比較して末
期の肉厚が減少する。2. Description of the Related Art A high-temperature billet is pressed from a container toward a die, and is passed through a shaping space provided in the die to produce an extruded shape having a predetermined shape. At this time, the thickness of the extruded profile tends to fluctuate during extrusion molding. Factors of wall thickness variation include die temperature distribution, extrusion processing force, container sealing force, and the like. For example, when the temperature of the die is reduced during extrusion by heat dissipation to the outside air, the shaping space is narrowed by thermal shrinkage, and the wall thickness at the end of the extrusion cycle is reduced as compared with the initial stage of the extrusion cycle.
【０００３】他方、押出成形中には所定圧力でビレット
が押圧されるが、コンテナ内壁とビレット周面との摩擦
に依るコンテナシール力は、ビレットの先端部に比較し
て後端部ほど小さくなる。コンテナシール力が低減する
と、ダイを拘束する力が減少するため、ダイ中央部が押
出方向に突出してダイの撓みが大きくなり、結果として
賦形空間を狭くし、ビレット後端部に当たる部分の肉厚
が減少する。そこで、本出願人は、押出成形中における
肉厚変動を抑制するため、ダイを着脱可能に保持するホ
ルダをスプレッダバッフルに連結した押出ダイスを特開
平６−２５４６１８号公報で紹介した。この押出ダイス
では、スプレッダバッフルからの荷重の一部がホルダに
伝達されるため、ダイに加わる荷重が小さくなり、ベア
リング両端部の応力集中，寸法変動等が抑制される。ま
た、ダイとホルダとの間に断熱材を介在させるとき、ベ
アリング部が一定温度になるため熱的歪みが減少し、安
定条件下の押出成形が可能になる。[0003] On the other hand, the billet is pressed at a predetermined pressure during extrusion molding, but the container sealing force due to the friction between the inner wall of the container and the peripheral surface of the billet becomes smaller at the rear end compared to the front end of the billet. . When the container sealing force is reduced, the force for restraining the die is reduced, so that the central portion of the die protrudes in the extrusion direction, and the deflection of the die is increased. The thickness decreases. Therefore, the present applicant introduced an extrusion die in which a holder for detachably holding a die is connected to a spreader baffle in Japanese Patent Application Laid-Open No. Hei 6-254618 in order to suppress thickness fluctuation during extrusion molding. In this extrusion die, since a part of the load from the spreader baffle is transmitted to the holder, the load applied to the die is reduced, and the stress concentration and dimensional variation at both ends of the bearing are suppressed. Further, when a heat insulating material is interposed between the die and the holder, the temperature of the bearing portion becomes constant, so that thermal distortion is reduced, and extrusion molding under stable conditions becomes possible.
【０００４】[0004]
【発明が解決しようとする課題】ホルダの採用によって
ダイの物理的又は熱的歪みに起因する押出形材の肉厚変
動は大幅に低減する。しかし、ダイに加わる力は、軽減
されるものの依然として変動し、押出形材の肉厚に悪影
響を及ぼす原因となる。また、ダイとホルダとの間を断
熱することによってダイの温度変動を抑制できるが、ホ
ルダの温度変化に起因してダイ保持部の寸法が変わり、
ダイに加わる力が変動する。その結果、押出形材の肉厚
変動を完全には解消しきれていない。本発明は、このよ
うな問題を解消すべく案出されたものであり、ホルダを
介してダイに加えられる力を調整可能にすることによ
り、温度やコンテナシール力の変動が賦形空間の間隙に
及ぼす影響を相殺し、ダイに加わる力を一定に維持し、
肉厚変動がより抑制された押出形材を製造することを目
的とする。SUMMARY OF THE INVENTION The use of a holder greatly reduces the thickness variation of the extruded profile due to physical or thermal distortion of the die. However, the force on the die, while reduced, still fluctuates, causing a negative effect on the wall thickness of the extruded profile. In addition, heat insulation between the die and the holder can suppress temperature fluctuations of the die, but the dimensions of the die holding portion change due to the temperature change of the holder,
The force applied to the die fluctuates. As a result, the thickness variation of the extruded profile has not been completely eliminated. The present invention has been devised in order to solve such a problem. By making it possible to adjust the force applied to the die via the holder, fluctuations in the temperature and the container sealing force cause the gap in the shaping space to change. To maintain the force on the die constant,
An object of the present invention is to produce an extruded member in which the thickness variation is further suppressed.
【０００５】[0005]
【課題を解決するための手段】本発明の肉厚制御方法
は、その目的を達成するため、ホルダに設けたダイ保持
用凹部にダイを挿入してバッフルプレートに対向させ、
ホルダを介して周方向からダイに加圧力を加える機構を
備えた押出ダイスを用いて押出形材を製造する際、ダイ
に設けた賦形空間の間隙が一定になるように、押出形材
の肉厚変動に応じてダイに加える加圧力を制御すること
を特徴とする。加圧機構としては、ホルダの外周からダ
イ保持用凹部に延びる貫通孔に挿入した加圧力調整ロッ
ドの脚部先端をダイの周面に押し当て、押出形材の肉厚
変動に応じて加圧力調整ロッドの押込み量を制御する方
式が採用される。According to the thickness control method of the present invention, in order to achieve the object, a die is inserted into a die holding recess provided in a holder and is opposed to a baffle plate.
When manufacturing an extruded profile using an extrusion die having a mechanism for applying a pressing force to the die from a circumferential direction through a holder, the extruded profile is formed so that a gap in a shaping space provided in the die is constant. It is characterized in that the pressing force applied to the die is controlled in accordance with the thickness variation. As the pressure mechanism, the tip of the leg of the pressure adjusting rod inserted into the through hole extending from the outer periphery of the holder to the concave portion for holding the die is pressed against the peripheral surface of the die, and the pressure is applied according to the thickness variation of the extruded material. A method of controlling the pushing amount of the adjustment rod is adopted.
【０００６】[0006]
【実施の形態】本発明に従った押出ダイスは、たとえば
図１に示す要部構造にみられるように、ダイ１０をホル
ダ２０に入れ子式に組み込み、ホルダ２０とバッフルプ
レート３０との間で固定保持する。ダイ１０には、押出
形材の断面形状に相当する賦形空間１１が形成されてい
る。ダイ１０は、ホルダ２０のダイ保持用凹部２１に挿
入され、メタル導入部３１をもつバッフルプレート３０
に装着される。ダイ保持用凹部２１は、挿入されたダイ
１０の周面との間に若干の間隙２２が形成されるサイズ
に設計されている。ホルダ２０には、外周から中心に向
かって延び、ダイ保持用凹部２１に開口する貫通孔２３
が穿設されている。貫通孔２３には、脚部先端がダイ１
０の周面に当接する加圧力調整ロッド２４が差し込まれ
ている。ダイ保持用凹部２１の内壁から突出する加圧力
調整ロッド２４の突出長さを調節することにより、ホル
ダ２０からダイ１０に加えられる力を変えることができ
る。図１では１本の加圧力調整ロッド２４を示している
が、加圧力調整ロッド２４の本数及び挿入位置は、製造
される押出形材のサイズ及び断面形状を考慮して適宜定
められる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In an extrusion die according to the present invention, a die 10 is nested in a holder 20 and fixed between the holder 20 and a baffle plate 30 as shown in, for example, a main structure shown in FIG. Hold. A forming space 11 corresponding to the cross-sectional shape of the extruded material is formed in the die 10. The die 10 is inserted into the die holding recess 21 of the holder 20 and has a baffle plate 30 having a metal introduction portion 31.
Attached to. The die holding concave portion 21 is designed to have such a size that a slight gap 22 is formed between the die holding concave portion 21 and the peripheral surface of the inserted die 10. The holder 20 has a through hole 23 extending from the outer periphery toward the center and opening to the die holding recess 21.
Are drilled. In the through hole 23, the tip of the leg
A pressing force adjusting rod 24 that comes into contact with the peripheral surface of No. 0 is inserted. The force applied from the holder 20 to the die 10 can be changed by adjusting the length of the pressing force adjusting rod 24 projecting from the inner wall of the die holding recess 21. FIG. 1 shows one pressing force adjusting rod 24, but the number and the insertion position of the pressing force adjusting rods 24 are appropriately determined in consideration of the size and the cross-sectional shape of the extruded shape to be manufactured.
【０００７】この構造では、ホルダ２０がバッフルプレ
ート３０にボルト等の手段で連結固定されるが、ダイ１
０とホルダ２０，バッフルプレート３０との間は連結固
定されておらず、ホルダ２０とバッフルプレート３０と
の間にダイ１０が挟み込まれている。ダイ１０は，加圧
力調整ロッド２４を緩めた状態でホルダ２０のダイ保持
用凹部２１に挿入される。次いで、ダイ１０の挿入側か
らバッフルプレート３０を当てがい、バッフルプレート
３０をホルダ２０に連結固定することにより、押出ダイ
ス１が組み立てられる。その後、加圧力調整ロッド２４
を締め付けてダイ保持用凹部２１の内壁から突出する加
圧力調整ロッド２４の突出長さを調節することにより，
ダイ１０の賦形空間１１が規定寸法になるようにダイ１
０に加わる力を制御する。In this structure, the holder 20 is connected and fixed to the baffle plate 30 by means such as bolts.
0, the holder 20, and the baffle plate 30 are not connected and fixed, and the die 10 is sandwiched between the holder 20 and the baffle plate 30. The die 10 is inserted into the die holding recess 21 of the holder 20 with the pressing force adjusting rod 24 loosened. Next, the extrusion die 1 is assembled by applying the baffle plate 30 from the insertion side of the die 10 and connecting and fixing the baffle plate 30 to the holder 20. After that, the pressure adjusting rod 24
To adjust the protrusion length of the pressing force adjusting rod 24 protruding from the inner wall of the die holding concave portion 21.
The die 1 is placed so that the shaping space 11 of the die 10 has a specified size.
Controls the force applied to zero.
【０００８】押出ダイス１は、ダイヒータで所定温度
（たとえば４５０℃前後）に加熱された後、図２に示す
ように必要に応じてボルスタ２と共にエンドプラテン３
のステム４に対向する側の所定位置にセットされる。次
いで、押出ダイス１の外周方向に突出している加圧力調
整ロッド２４の先端をロッド駆動装置５に連結する。所
定温度（たとえば、４５０℃前後）に予熱したビレット
Ｍを収容したコンテナ６を押出ダイス１に密着させ、ス
テム４でビレットＭを押出方向Ｄに押圧すると、ビレッ
トＭが塑性流動してダイ１０の賦形空間１１を通過し、
所定の断面形状をもつ押出形材Ｓが製造される。After the extrusion die 1 is heated to a predetermined temperature (for example, about 450 ° C.) by a die heater, as shown in FIG.
Is set at a predetermined position on the side opposite to the stem 4 of the second. Next, the distal end of the pressing force adjusting rod 24 protruding in the outer peripheral direction of the extrusion die 1 is connected to the rod driving device 5. When the billet M containing the billet M preheated to a predetermined temperature (for example, about 450 ° C.) is brought into close contact with the extrusion die 1 and the billet M is pressed in the extrusion direction D by the stem 4, the billet M plastically flows and the die 10 Passing through the shaping space 11,
An extruded section S having a predetermined cross-sectional shape is manufactured.
【０００９】押出成形中のホルダ２０は、保有熱の放散
により降温するため熱収縮する。ホルダ２０の熱収縮に
より、ダイ保持用凹部２１の内法が減少し、ダイ１０と
の間隙２２が狭くなる。他方、ダイ１０は、周囲がホル
ダ２０で囲まれており、間隙２２が断熱層として働くた
めホルダ２０への熱伝導が小さい。しかも、高温のビレ
ットＭが接し、メタルが賦形空間１１を通過する際の加
工熱も加わるため、ホルダ２０に比較してダイ１０の温
度降下は小さく、却ってダイ１０が昇温することもあ
る。すなわち、ダイ１０及びホルダ２０の降温速度が図
３に示すように異なり、ダイ１０とホルダ２０との間の
温度差が大きくなる。ダイ１０に比較して大きく降温し
たホルダ２０の収縮力がダイ１０に働くと、ダイ１０が
内周方向に加圧され、賦形空間１１の隙間が小さくな
る。[0009] The holder 20 during the extrusion molding is thermally contracted in order to lower the temperature by dissipating the retained heat. Due to the heat shrinkage of the holder 20, the inner diameter of the concave portion 21 for holding the die is reduced, and the gap 22 with the die 10 is narrowed. On the other hand, the periphery of the die 10 is surrounded by the holder 20, and the gap 22 functions as a heat insulating layer, so that heat conduction to the holder 20 is small. Moreover, since the high-temperature billet M comes into contact therewith and the processing heat when the metal passes through the shaping space 11 is added, the temperature drop of the die 10 is smaller than that of the holder 20, and the temperature of the die 10 may rise. . That is, the temperature drop rates of the die 10 and the holder 20 are different as shown in FIG. 3, and the temperature difference between the die 10 and the holder 20 is large. When the shrinking force of the holder 20 which has a large temperature lower than that of the die 10 acts on the die 10, the die 10 is pressed in the inner circumferential direction, and the gap in the shaping space 11 is reduced.
【００１０】また、押出成形中のビレットＭに加わる押
出加工力は、押出ダイス１から押出される押出形材Ｓの
速度を一定に維持するため，通常一定値に設定される。
他方、ビレットＭとコンテナ６との間の摩擦を一因とす
るコンテナシール力がダイ１０に働く。バッフルプレー
ト３０にはメタル導入部３１内のメタルを介して外側に
拡げる力が加わり、その力はバッフルプレート３０とダ
イ１０との間に生じる摩擦力によってダイ１０に伝わ
る。バッフルプレート３０とダイ１０との間の摩擦力
は、垂直応力（コンテナシール力）に依存する。しか
し、コンテナシール力は、押出の進行に伴ってビレット
Ｍとコンテナ６との接触面積が減少するため、ビレット
Ｍの先端部に比較して後端部ほど小さくなる。そのた
め、１本のビレットＭでみると押出初期に比較して押出
末期のコンテナシール力が小さくなり、ダイ１０の拡開
量減少に伴って賦形空間１１の間隙が狭くなる傾向にあ
る。The extruding force applied to the billet M during the extrusion is usually set to a constant value in order to keep the speed of the extruded material S extruded from the extrusion die 1 constant.
On the other hand, a container sealing force exerted on the die 10 due in part to the friction between the billet M and the container 6. A force expanding outward is applied to the baffle plate 30 via the metal in the metal introduction part 31, and the force is transmitted to the die 10 by a frictional force generated between the baffle plate 30 and the die 10. The frictional force between the baffle plate 30 and the die 10 depends on normal stress (container sealing force). However, since the contact area between the billet M and the container 6 decreases as the extrusion proceeds, the container sealing force becomes smaller at the rear end portion of the billet M than at the front end portion. Therefore, when viewed from a single billet M, the container sealing force at the end of extrusion is smaller than that at the beginning of extrusion, and the gap of the shaping space 11 tends to be narrowed as the amount of expansion of the die 10 decreases.
【００１１】押出成形中に温度やコンテナシール力がこ
のように変動するため、押出ダイス１から押出された押
出形材Ｓは、図４に示すように１本の押出形材Ｓでみる
と先端側に比較して後端側ほど薄肉化する傾向にある。
また、連続して複数本のビレットＭを押出成形する場合
には、先行押出形材に比較して後続押出形材ほど薄肉化
する傾向を示す。押出形材Ｓの肉厚減少は、押出成形の
進行に伴って押出ダイス１の温度やコンテナシール力が
変動して賦形空間１１の間隙が変わることが原因であ
る。そこで、本発明においては、温度やコンテナシール
力の変動による影響を相殺するようにダイ１０に加える
力を制御することにより、賦形空間１１の間隙を一定に
維持し、肉厚変動を抑制した押出形材Ｓを製造してい
る。Since the temperature and the container sealing force fluctuate in this way during extrusion molding, the extruded profile S extruded from the extrusion die 1 has a leading end when viewed from a single extruded profile S as shown in FIG. There is a tendency for the rear end to be thinner than the side.
When a plurality of billets M are continuously extruded, a subsequent extruded member tends to be thinner than a preceding extruded member. The decrease in the thickness of the extruded material S is caused by the fact that the temperature of the extrusion die 1 and the container sealing force fluctuate with the progress of the extrusion molding, and the gap of the shaping space 11 changes. Therefore, in the present invention, by controlling the force applied to the die 10 so as to offset the influence of the fluctuation of the temperature and the container sealing force, the gap of the shaping space 11 is kept constant, and the thickness fluctuation is suppressed. Extruded section S is manufactured.
【００１２】具体的には、エンドプラテン３の出側に厚
み計７を設け、押出ダイス１から送り出された押出形材
Ｓの肉厚を測定する。厚み計７としては、Ｘ線透過方
式，レーザ光方式等が使用可能である。厚み計７で得ら
れた測定値は、制御機構（図示せず）に送られ、制御信
号としてロッド駆動装置５に出力される。ロッド駆動装
置５では、制御信号、すなわち押出形材Ｓの肉厚に応じ
て加圧力調整ロッド２４の押込み量を制御し、所定の肉
厚に必要な賦形空間１１の間隙が保たれるようにダイ１
０を加圧する。このようにして押出成形中に加圧力調整
ロッド２４の押込み量を制御しながら押出成形すると、
肉厚変動が１本の押出形材では先端部に比較して後端部
の肉厚減少が０．０２ｍｍ以下に、５本の押出形材では
１本目の押出形材に比較して５本目の押出形材の肉厚減
少が０．０５ｍｍ以下に抑えられていた。More specifically, a thickness gauge 7 is provided on the exit side of the end platen 3 to measure the thickness of the extruded material S sent from the extrusion die 1. As the thickness gauge 7, an X-ray transmission system, a laser beam system, or the like can be used. The measurement value obtained by the thickness gauge 7 is sent to a control mechanism (not shown), and is output to the rod driving device 5 as a control signal. The rod driving device 5 controls the pushing amount of the pressing force adjusting rod 24 according to the control signal, that is, the thickness of the extruded material S, so that the gap of the shaping space 11 required for a predetermined thickness is maintained. Die 1
Press 0. When extrusion molding is performed while controlling the pressing amount of the pressure adjusting rod 24 during extrusion molding in this manner,
In the case of one extruded member having a thickness variation of less than 0.02 mm in the rear end portion compared to the tip portion, the fifth extruded member has five thicknesses compared to the first extruded member. Of the extruded profile was suppressed to 0.05 mm or less.
【００１３】押出形材Ｓの肉厚変動を抑制する方法とし
ては、押出形材Ｓの肉厚を実測する厚み計７に代え、ス
テム４又はラムの前進速度及び押出形材Ｓを引っ張るプ
ラー（図示せず）の走行速度等から押出形材Ｓの成形速
度を求め、該成形速度から算出される押出形材Ｓの所定
断面における肉厚を算出し、算出結果に応じて加圧力調
整ロッド２４の押込み量を制御することもできる。或い
は、過去の実績に基づき加圧力調整ロッド２４の押込み
量を加減することも可能である。更には、ロッド駆動装
置５に代えて、直接又は間接的にダイ１０を加圧する油
圧機構又はギア機構を組み込むこともできる。たとえ
ば、油圧制御で加圧力調整ロッド２４の押込み量を調整
するとき、押出成形中に賦形空間１１の間隙を設定値に
維持する作業が容易になる。As a method for suppressing the variation in the thickness of the extruded profile S, a forward speed of the stem 4 or the ram and a puller (not shown) for pulling the extruded profile S are used instead of the thickness gauge 7 for actually measuring the thickness of the extruded profile S. (Not shown), the forming speed of the extruded profile S is obtained from the running speed, and the thickness of the extruded profile S at a predetermined cross section calculated from the forming speed is calculated. Can be controlled. Alternatively, it is also possible to increase or decrease the pushing amount of the pressing force adjusting rod 24 based on past results. Further, a hydraulic mechanism or a gear mechanism for directly or indirectly pressing the die 10 may be incorporated in place of the rod driving device 5. For example, when adjusting the pushing amount of the pressing force adjusting rod 24 by hydraulic control, the operation of maintaining the gap of the shaping space 11 at a set value during extrusion molding becomes easy.
【００１４】[0014]
【発明の効果】以上に説明したように、本発明において
は、押出成形中に温度変動やコンテナシール力の変動を
受けて変わりやすい賦形空間の空隙を、ダイを周方向か
ら加圧する加圧力調整ロッドの押込み量を制御すること
により一定に維持している。そのため、温度やコンテナ
シール力の変動に起因する肉厚変動が抑制され、形状精
度の良好な押出形材が得られる。As described above, according to the present invention, the pressing force for pressurizing the die from the circumferential direction is formed in the gap of the shaping space which is easily changed due to the temperature fluctuation and the fluctuation of the container sealing force during the extrusion. The adjustment rod is kept constant by controlling the pushing amount. For this reason, a change in wall thickness due to a change in temperature or container sealing force is suppressed, and an extruded member having good shape accuracy can be obtained.
【図１】 ホルダのダイ保持用凹部にダイを挿入した押
出ダイスの正面図（ａ）及びｂ−ｂ断面図（ｂ）FIG. 1 is a front view (a) and a bb cross-sectional view (b) of an extrusion die in which a die is inserted into a die holding recess of a holder.
【図２】 押出ダイスをセットした押出装置の概略図FIG. 2 is a schematic diagram of an extruder in which an extrusion die is set.
【図３】 押出成形中のダイ及びホルダの温度変化を示
すグラフFIG. 3 is a graph showing temperature changes of a die and a holder during extrusion molding.
【図４】 押出成形で生じる肉厚変動の一例を示すグラ
フFIG. 4 is a graph showing an example of a thickness variation generated by extrusion molding.
１：押出ダイス ２：ボルスタ ３：エンドプラテ
ン ４：ステム ５：ロッド駆動装置 ６：コン
テナ ７：厚み計 １０：ダイ １１：賦形空間 ２０：ホルダ ２１：ダイ保持用凹部 ２２：間隙
２３：貫通孔 ２４：加圧力調整ロッド ３０：バッフルプレート ３１：メタル導入部 Ｍ：ビレット Ｓ：押出形材 Ｄ：押出方向1: Extrusion die 2: Bolster 3: End platen 4: Stem 5: Rod drive device 6: Container 7: Thickness gauge 10: Die 11: Shaped space 20: Holder 21: Die holding recess 22: Gap 23: Through hole 24: Pressure adjusting rod 30: Baffle plate 31: Metal introduction part M: Billet S: Extruded material D: Extrusion direction
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大山 敦之 新潟県新潟市太郎代1572−19 日本軽金属 株式会社新潟工場内 Ｆターム(参考） 4E029 MA04 MB06 MB09 TA01 TA07 TA08 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Atsuyuki Oyama 1572-19 Taroyo, Niigata-shi, Niigata Nippon Light Metal Co., Ltd. Niigata Factory F-term (reference) 4E029 MA04 MB06 MB09 TA09 TA07 TA08
Claims (2)
挿入してバッフルプレートに対向させ、ホルダを介して
ダイに周方向から加圧力を加える機構を備えた押出ダイ
スを用いて押出形材を製造する際、ダイに設けた賦形空
間の間隙が一定になるように、押出形材の肉厚変動に応
じてダイに加える加圧力を制御することを特徴とする押
出形材の肉厚制御方法。1. An extruded profile using an extruding die having a mechanism for inserting a die into a die holding recess provided in a holder, facing the baffle plate, and applying a pressing force to the die from the circumferential direction via the holder. When manufacturing the extruded profile, the pressing force applied to the die is controlled according to the thickness variation of the extruded profile so that the gap of the shaping space provided in the die is constant. Control method.
る貫通孔に挿入した加圧力調整ロッドの脚部先端をダイ
の周面に押し当て、押出形材の肉厚変動に応じて加圧力
調整ロッドの押込み量を制御する請求項１記載の押出形
材の肉厚制御方法。2. The pressing force adjusting rod inserted into a through hole extending from the outer periphery of the holder to the concave portion for holding the die presses the tip of a leg of the pressing force adjusting rod against the peripheral surface of the die, and adjusts the pressing force according to the thickness variation of the extruded material. The method for controlling the thickness of an extruded profile according to claim 1, wherein the pushing amount of the rod is controlled.
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|---|---|---|---|
| JP30050999A JP4449122B2 (en) | 1999-10-22 | 1999-10-22 | Thickness control method of extruded profile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30050999A JP4449122B2 (en) | 1999-10-22 | 1999-10-22 | Thickness control method of extruded profile |
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| Publication Number | Publication Date |
|---|---|
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| JP4449122B2 JP4449122B2 (en) | 2010-04-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011161456A (en) * | 2010-02-05 | 2011-08-25 | Ube Machinery Corporation Ltd | Extrusion press and extrusion control method |
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1999
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011161456A (en) * | 2010-02-05 | 2011-08-25 | Ube Machinery Corporation Ltd | Extrusion press and extrusion control method |
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| JP4449122B2 (en) | 2010-04-14 |
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