JP2017047428A - Spinning device of cylindrical material and spinning molding method - Google Patents

Spinning device of cylindrical material and spinning molding method Download PDF

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JP2017047428A
JP2017047428A JP2015170074A JP2015170074A JP2017047428A JP 2017047428 A JP2017047428 A JP 2017047428A JP 2015170074 A JP2015170074 A JP 2015170074A JP 2015170074 A JP2015170074 A JP 2015170074A JP 2017047428 A JP2017047428 A JP 2017047428A
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cylindrical material
mandrel
tension
spinning
protruding edge
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JP6583884B2 (en
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孝二 檜垣
Koji Higaki
孝二 檜垣
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Nihon Spindle Manufacturing Co Ltd
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Nihon Spindle Manufacturing Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

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  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a spinning device of a cylindrical material and a spinning molding method in which a projection edge part formed in the cylindrical material is prevented from being deformed and coming off from a tension application mechanism even when a large tension is applied in an axial direction of the cylindrical material.SOLUTION: A spinning device of a cylindrical material comprises a tension application mechanism 4 for applying a tension in an axial direction of a cylindrical material 1 through a projection edge part 11 formed at an open end part of the cylindrical material 1, and a support mechanism 5 for holding the projection edge part 11 of the cylindrical material 1 between the tension application mechanism 4 and the support mechanism 5. Ironing is performed while the tension is applied in the axial direction of the cylindrical material 1 in a state of holding the projection edge part 11 of the cylindrical material 1 by the tension application mechanism 4 and the support mechanism 5.SELECTED DRAWING: Figure 2

Description

本発明は、円筒状素材のスピニング装置及びスピニング成形方法に関するものである。   The present invention relates to a spinning device for a cylindrical material and a spinning molding method.

従来、プリンタや複写機のローラやドラム、魔法瓶の内筒等を製造するために、スピニング装置によるスピニング成形方法が汎用されている（例えば、特許文献１参照。）。   2. Description of the Related Art Conventionally, a spinning molding method using a spinning device has been widely used to manufacture printers, copier rollers, drums, thermos inner cylinders, and the like (see, for example, Patent Document 1).

このスピニング装置によるスピニング成形方法は、図３に示すように、金属製の円筒状素材１０をマンドレル２０に被せるようにして装着し、張力付与機構４０によって、円筒状素材１０の開放端部に形成した突出縁部１１を介して、円筒状素材１０の軸方向に張力を付与しながら、円筒状素材１０の外周側からローラ３０で押圧するしごき加工を施すことによって円筒状素材１０の伸長と薄肉化を図るようにしている。   As shown in FIG. 3, the spinning forming method using this spinning device is mounted on the mandrel 20 so as to cover the metal cylindrical material 10, and is formed on the open end of the cylindrical material 10 by the tension applying mechanism 40. While applying tension in the axial direction of the cylindrical material 10 through the protruding edge portion 11, an elongation and thin wall of the cylindrical material 10 are applied by performing a squeezing process that presses with a roller 30 from the outer peripheral side of the cylindrical material 10. It tries to make it.

そして、しごき加工を施した円筒状素材１０は、例えば、フォーク状の治具（図示省略）によって、円筒状素材１０の開放端部に形成した突出縁部１１又は閉鎖端部（一部閉鎖端部）に形成した突出縁部１２を介して、マンドレル２０の先端側（図３において右側）に向けて移動することにより、マンドレル２０から脱型するようにしている。   And the cylindrical raw material 10 which performed the ironing process is the protrusion edge part 11 or closed end part (partially closed end) formed in the open end part of the cylindrical raw material 10 with a fork-shaped jig | tool (illustration omitted), for example. The mold is removed from the mandrel 20 by moving toward the distal end side (right side in FIG. 3) of the mandrel 20 through the protruding edge portion 12 formed in the portion.

特開２００９−６３５９号公報JP 2009-6359 A

このように、円筒状素材のスピニング装置によるスピニング成形方法においては、円筒状素材１０の伸長と薄肉化を図る際に、シワの発生を回避するために、張力付与機構４０によって、円筒状素材１０の開放端部に形成した突出縁部１１を介して、円筒状素材１０の軸方向に張力を付与する必要があり、一般的には、円筒状素材１０の開放端部に鍔状の突出縁部１１を形成し、この突出縁部１１を、マンドレルの軸方向に移動可能に設けられた張力付与機構４０によって押して移動させることで、円筒状素材１０の軸方向に張力を付与するようにしている。   As described above, in the spinning forming method using the spinning device for the cylindrical material, the cylindrical material 10 is used by the tension applying mechanism 40 to avoid the generation of wrinkles when the cylindrical material 10 is elongated and thinned. It is necessary to apply tension in the axial direction of the cylindrical material 10 via the protruding edge 11 formed at the open end of the cylindrical material. The portion 11 is formed, and the protruding edge portion 11 is pushed and moved by the tension applying mechanism 40 provided so as to be movable in the axial direction of the mandrel, so that tension is applied in the axial direction of the cylindrical material 10. Yes.

しかしながら、スピニング成形を行う円筒状素材によっては、円筒状素材１０の軸方向に付与する張力を増大させる必要がある場合があり、大きな張力を作用させた場合、鍔状の突出縁部１１が変形し、張力付与機構４０から抜けてしまうという問題があった。   However, depending on the cylindrical material to be subjected to spinning molding, it may be necessary to increase the tension applied in the axial direction of the cylindrical material 10, and when a large tension is applied, the bowl-shaped protruding edge 11 is deformed. However, there is a problem that the tension applying mechanism 40 comes off.

また、しごき加工を施した円筒状素材１０をマンドレル２０の先端側に向けて移動することによりマンドレル２０から脱型するためのフォーク状の治具は、ローラ３０と干渉しないように動作させる必要があり、このため、サイクルタイムを増加させるという問題があった。   In addition, the fork-shaped jig for releasing the mandrel 20 from the mandrel 20 by moving the ironed cylindrical material 10 toward the tip side of the mandrel 20 needs to be operated so as not to interfere with the roller 30. For this reason, there was a problem of increasing the cycle time.

本発明は、上記従来の円筒状素材のスピニング装置及びスピニング成形方法の有する問題点に鑑み、円筒状素材の軸方向に大きな張力を作用させた場合でも、円筒状素材に形成した突出縁部が変形し、張力付与機構から抜けてしまうことがないようにした円筒状素材のスピニング装置及びスピニング成形方法を提供することを第１の目的とする。   In view of the problems of the above conventional cylindrical material spinning device and spinning molding method, the present invention has a protruding edge formed on the cylindrical material even when a large tension is applied in the axial direction of the cylindrical material. It is a first object of the present invention to provide a spinning device and a spinning molding method for a cylindrical material which are deformed and do not come out of the tension applying mechanism.

また、本発明は、しごき加工を施した円筒状素材をマンドレルの先端側に向けて移動することにより行う、しごき加工を施した円筒状素材のマンドレルからの脱型作業を、円滑に行うことができるとともに、特に、サイクルタイムを短縮化できるようにした円筒状素材のスピニング装置及びスピニング成形方法を提供することを第２の目的とする。   Further, the present invention can smoothly perform the demolding operation of the ironing-processed cylindrical material from the mandrel by moving the ironing-processed cylindrical material toward the tip side of the mandrel. A second object of the present invention is to provide a spinning device and a spinning molding method for a cylindrical material that can reduce the cycle time.

上記第１の目的を達成するため、本発明の円筒状素材のスピニング装置は、金属製の円筒状素材をマンドレルに被せるようにして装着し、該円筒状素材の軸方向に張力を付与しながら、円筒状素材の外周側からローラで押圧するしごき加工を施すことによって円筒状素材の伸長と薄肉化を図るようにした円筒状素材のスピニング装置において、円筒状素材の開放端部に形成した突出縁部を介して円筒状素材の軸方向に張力を付与する張力付与機構と、該張力付与機構との間で円筒状素材の突出縁部を挟持する支持機構とを備え、円筒状素材の突出縁部を張力付与機構と支持機構とで挟持した状態で、円筒状素材の軸方向に張力を付与しながら、しごき加工を施すようにしたことを特徴とする。   In order to achieve the first object, the spinning device for a cylindrical material of the present invention is mounted so as to cover a metal cylindrical material on a mandrel, while applying tension in the axial direction of the cylindrical material. In a spinning device for a cylindrical material in which the cylindrical material is stretched and thinned by performing a squeezing process by pressing with a roller from the outer peripheral side of the cylindrical material, a protrusion formed at the open end of the cylindrical material A tension applying mechanism that applies tension in the axial direction of the cylindrical material via the edge, and a support mechanism that sandwiches the protruding edge of the cylindrical material between the tension applying mechanism, and the cylindrical material protrudes. The ironing process is performed while applying tension in the axial direction of the cylindrical material in a state where the edge portion is held between the tension applying mechanism and the support mechanism.

この場合において、上記第２の目的を達成するため、本発明の円筒状素材のスピニング装置は、しごき加工を施した後、前記支持機構が、しごき加工を施した円筒状素材の突出縁部を支持した状態で、マンドレルの先端側に向けて移動することにより、円筒状素材をマンドレルから脱型するようにすることができる。   In this case, in order to achieve the second object, in the cylindrical material spinning device of the present invention, after the ironing process is performed, the support mechanism has the protruding edge part of the cylindrical material subjected to the ironing process. The cylindrical material can be removed from the mandrel by moving toward the tip side of the mandrel in the supported state.

また、前記張力付与機構及び支持機構の円筒状素材との接触部が、それぞれマンドレルと共に回転するとともに、マンドレルの軸方向に移動可能に設けられるようにすることができる。   Further, the contact portions of the tension applying mechanism and the support mechanism with the cylindrical material can be provided so as to rotate together with the mandrel and to move in the axial direction of the mandrel.

また、本発明の円筒状素材のスピニング装置によるスピニング成形方法は、金属製の円筒状素材をマンドレルに被せるようにして装着し、該円筒状素材の軸方向に張力を付与しながら、円筒状素材の外周側からローラで押圧するしごき加工を施すことによって円筒状素材の伸長と薄肉化を図るようにした円筒状素材のスピニング成形方法において、円筒状素材の突出縁部を、円筒状素材の開放端部に形成した突出縁部を介して円筒状素材の軸方向に張力を付与する張力付与機構と、該張力付与機構との間で円筒状素材の突出縁部を挟持する支持機構とで挟持した状態で、円筒状素材の軸方向に張力を付与しながら、しごき加工を施すようにしたことを特徴とする。   Further, the spinning forming method by the spinning device of the cylindrical material of the present invention is such that the cylindrical material is mounted while covering the mandrel with a metal cylindrical material and applying tension in the axial direction of the cylindrical material. In the spinning method of a cylindrical material that is intended to stretch and thin the cylindrical material by applying a squeezing process that presses with a roller from the outer peripheral side of the cylindrical material, the protruding edge of the cylindrical material is opened to the cylindrical material. Clamped by a tension applying mechanism that applies tension in the axial direction of the cylindrical material via a protruding edge formed at the end, and a support mechanism that clamps the protruding edge of the cylindrical material between the tension applying mechanism In this state, ironing is performed while applying tension in the axial direction of the cylindrical material.

この場合において、しごき加工を施した後、前記支持機構が、しごき加工を施した円筒状素材の突出縁部を支持した状態で、マンドレルの先端側に向けて移動することにより、円筒状素材をマンドレルから脱型するようにすることができる。   In this case, after performing the ironing process, the support mechanism moves toward the distal end side of the mandrel while supporting the protruding edge of the cylindrical material subjected to the ironing process. The mold can be removed from the mandrel.

また、前記張力付与機構及び支持機構の円筒状素材との接触部が、それぞれマンドレルと共に回転するとともに、マンドレルの軸方向に移動可能に設けられてなり、しごき加工を施した後、張力付与機構がマンドレルの先端側に向けて移動するのと同時に、支持機構がしごき加工を施した円筒状素材の突出縁部を支持した状態でマンドレルの先端側に向けて移動するようにすることができる。   In addition, the contact portions of the tension applying mechanism and the support mechanism with the cylindrical material rotate with the mandrel and can be moved in the axial direction of the mandrel. Simultaneously with the movement toward the tip side of the mandrel, the support mechanism can move toward the tip side of the mandrel while supporting the protruding edge portion of the cylindrical material subjected to ironing.

また、前記ローラのローラ待機位置からしごき加工位置への移動及びしごき加工位置からローラ待機位置への移動を、張力付与機構のマンドレルの軸方向の移動に同期させて行うようにすることができる。   Further, the movement of the roller from the roller standby position to the ironing position and the movement from the ironing position to the roller standby position can be performed in synchronization with the axial movement of the mandrel of the tension applying mechanism.

本発明の円筒状素材のスピニング装置及びスピニング成形方法によれば、円筒状素材の開放端部に形成した突出縁部を介して円筒状素材の軸方向に張力を付与する張力付与機構と、該張力付与機構との間で円筒状素材の突出縁部を挟持する支持機構とを備え、円筒状素材の突出縁部を張力付与機構と支持機構とで挟持した状態で、円筒状素材の軸方向に張力を付与しながら、しごき加工を施すようにすることにより、円筒状素材の突出縁部の保持力を高めることができる。これにより、円筒状素材の突出縁部に特殊な加工を行ったり、張力を下げてしごき加工を行ったりする等の回避方法を採用しなくても、円筒状素材の軸方向に大きな張力を作用させた場合でも、円筒状素材に形成した突出縁部が変形し、張力付与機構から抜けてしまうことがないようにすることができ、スピニング成形の作業効率を向上することができる。   According to the spinning device and the spinning molding method of the cylindrical material of the present invention, a tension applying mechanism that applies tension in the axial direction of the cylindrical material via a protruding edge formed at the open end of the cylindrical material, A support mechanism for holding the protruding edge portion of the cylindrical material between the tension applying mechanism and the axial direction of the cylindrical material with the protruding edge portion of the cylindrical material held between the tension applying mechanism and the support mechanism. The holding force of the protruding edge portion of the cylindrical material can be increased by performing the ironing process while applying tension to the cylindrical member. This makes it possible to apply a large tension in the axial direction of the cylindrical material without adopting a special method for the protruding edge of the cylindrical material, or by avoiding the ironing process by lowering the tension. Even if it is made to do, it can prevent that the protrusion edge part formed in the cylindrical raw material deform | transforms, and will not come off from a tension | tensile_strength provision mechanism, and can improve the working efficiency of spinning shaping | molding.

また、前記支持機構が、しごき加工を施した円筒状素材の突出縁部を支持した状態で、マンドレルの先端側に向けて移動することにより、円筒状素材をマンドレルから脱型するようにすることにより、さらに、前記張力付与機構及び支持機構の円筒状素材との接触部が、それぞれマンドレルと共に回転するとともに、マンドレルの軸方向に移動可能に設けられてなり、しごき加工を施した後、張力付与機構がマンドレルの先端側に向けて移動するのと同時に、支持機構がしごき加工を施した円筒状素材の突出縁部を支持した状態でマンドレルの先端側に向けて移動するようにしたり、前記ローラのローラ待機位置からしごき加工位置への移動及びしごき加工位置からローラ待機位置への移動を、張力付与機構のマンドレルの軸方向の移動に同期させて行うようにすることにより、しごき加工を施した円筒状素材をマンドレルの先端側に向けて移動することにより行う、しごき加工を施した円筒状素材のマンドレルからの脱型作業を、円滑に行うことができるとともに、特に、サイクルタイムを短縮化でき、スピニング成形の作業効率を一層向上することができる。   Further, the cylindrical support material is removed from the mandrel by moving toward the tip end side of the mandrel while the support mechanism supports the protruding edge portion of the cylindrical material subjected to ironing. Further, the contact portions of the tension applying mechanism and the cylindrical material of the support mechanism are respectively provided so as to rotate together with the mandrel and move in the axial direction of the mandrel, and after applying the ironing process, the tension is applied. At the same time that the mechanism moves toward the tip side of the mandrel, the support mechanism moves toward the tip side of the mandrel while supporting the protruding edge portion of the cylindrical material subjected to ironing, or the roller The movement from the roller standby position to the ironing position and the movement from the ironing position to the roller standby position are the same as the axial movement of the mandrel of the tension applying mechanism. By moving the cylindrical material that has been ironed toward the tip side of the mandrel, the demolding work from the mandrel of the cylindrical material that has been ironed can be performed smoothly. In particular, the cycle time can be shortened and the working efficiency of spinning molding can be further improved.

本発明の円筒状素材のスピニング装置によるスピニング成形方法の一例を示す工程説明図である。It is process explanatory drawing which shows an example of the spinning shaping | molding method by the spinning apparatus of the cylindrical raw material of this invention. 本発明の円筒状素材のスピニング装置によるスピニング成形方法の一例を示す工程説明図である。It is process explanatory drawing which shows an example of the spinning shaping | molding method by the spinning apparatus of the cylindrical raw material of this invention. 本発明の円筒状素材のスピニング装置の説明図で、（ａ）は全体の説明図、（ｂ）は要部の説明図ある。It is explanatory drawing of the spinning apparatus of the cylindrical raw material of this invention, (a) is whole explanatory drawing, (b) is explanatory drawing of the principal part. 従来の円筒状素材のスピニング装置によるスピニング成形方法を示す説明図である。It is explanatory drawing which shows the spinning shaping | molding method by the conventional cylindrical material spinning apparatus.

以下、本発明の円筒状素材のスピニング装置及びスピニング成形方法の実施の形態を、図面に基づいて説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a spinning device and a spinning molding method for a cylindrical material according to the present invention will be described with reference to the drawings.

図１−１及び図１−２並びに図２に、本発明の円筒状素材のスピニング装置によるスピニング成形方法の一例を示す。   FIG. 1-1, FIG. 1-2, and FIG. 2 show an example of a spinning molding method using the cylindrical material spinning device of the present invention.

この円筒状素材のスピニング装置は、金属製の円筒状素材１をマンドレル２に被せるようにして装着し、円筒状素材１の軸方向に張力を付与しながら、円筒状素材１の外周側からローラ３で押圧するしごき加工を施すことによって円筒状素材１の伸長と薄肉化を図るようにするためのもので、円筒状素材１の開放端部に形成した突出縁部１１を介して円筒状素材１の軸方向に張力を付与する張力付与機構４と、この張力付与機構４との間で円筒状素材１の突出縁部１１を挟持する支持機構５とを備え、円筒状素材１の突出縁部１１を張力付与機構４と支持機構５とで挟持した状態で、円筒状素材１の軸方向に張力を付与しながら、しごき加工を施すようにしたものである。   This spinning device for a cylindrical material is mounted so that a metal cylindrical material 1 is placed on a mandrel 2 and a roller is applied from the outer peripheral side of the cylindrical material 1 while applying tension in the axial direction of the cylindrical material 1. The cylindrical material 1 is stretched and thinned by applying a squeezing process to press the cylindrical material 1 through the protruding edge 11 formed at the open end of the cylindrical material 1. 1, a tension applying mechanism 4 that applies tension in the axial direction of 1, and a support mechanism 5 that sandwiches the protruding edge portion 11 of the cylindrical material 1 between the tension applying mechanism 4. In the state where the portion 11 is held between the tension applying mechanism 4 and the support mechanism 5, ironing is performed while applying tension in the axial direction of the cylindrical material 1.

この場合において、円筒状素材１には、最終製品に適応した、鉄、ステンレススチール、アルミニウム、アルミニウム合金、銅、マグネシウム等の各種金属製の円筒状素材を用いることができる。   In this case, the cylindrical material 1 may be a cylindrical material made of various metals such as iron, stainless steel, aluminum, aluminum alloy, copper, and magnesium, which is suitable for the final product.

円筒状素材１の形状は、円筒状素材１の開放端部に、張力付与機構４と支持機構５とで挟持可能な突出縁部１１を形成したものであれば、特に限定されるものでなく、最終製品に対応させたもので、本実施例のように、マンドレル２に被せるようにして装着したときに、マンドレル２の先端部によって支持することができるように端部を閉鎖した有底状のもののほか、図３に示す従来例のように、マンドレル２に被せるようにして装着したときに、マンドレル２の先端部によって支持することができるように端部を一部閉鎖したもの、さらには、突出縁部１２を形成したもの等を用いることができる。   The shape of the cylindrical material 1 is not particularly limited as long as the protruding edge 11 that can be sandwiched between the tension applying mechanism 4 and the support mechanism 5 is formed on the open end of the cylindrical material 1. The bottomed shape corresponding to the final product, with the end closed so that it can be supported by the tip of the mandrel 2 when mounted on the mandrel 2 as in this embodiment. In addition to those shown in FIG. 3, as shown in FIG. 3, when the mandrel 2 is mounted on the mandrel 2, the end part of the mandrel 2 is partially closed so that it can be supported by the tip part. In addition, one having a protruding edge portion 12 or the like can be used.

ここで、突出縁部１１の形状は、特に限定されるものでないが、成形加工し易く、また、張力付与機構４と支持機構５とで挟持し易い鍔状の形状のものとすることが好ましい。   Here, the shape of the protruding edge portion 11 is not particularly limited, but it is preferable that the protruding edge portion 11 has a bowl-like shape that is easy to mold and can be easily held between the tension applying mechanism 4 and the support mechanism 5. .

マンドレル２は、回転支持台６に取り付けられ、マンドレル２に円筒状素材１を装着した状態で、マンドレル２を回転させることができるようにしている。   The mandrel 2 is attached to a rotation support base 6 so that the mandrel 2 can be rotated while the cylindrical material 1 is mounted on the mandrel 2.

なお、本実施例において、マンドレル２を取り付けるようにした回転支持台６の回転軸は、竪軸型を採用するようにしたが、図３に示す従来例のように、横軸型を採用するようにすることもできる。   In this embodiment, the rotary shaft of the rotary support 6 to which the mandrel 2 is attached is a saddle shaft type, but a horizontal axis type is used as in the conventional example shown in FIG. It can also be done.

ローラ３は、マンドレル２に装着した円筒状素材１を、その外周側から押圧して、しごき加工を施すためのもので、本実施例においては、複数台、より具体的には、３台のローラ３を、マンドレル２を挟んで対称位置に配置するようにしている。   The roller 3 is for pressing the cylindrical material 1 mounted on the mandrel 2 from its outer peripheral side to perform ironing processing. In this embodiment, a plurality of units, more specifically, three units are provided. The rollers 3 are arranged at symmetrical positions with the mandrel 2 in between.

張力付与機構４は、円筒状素材１の開放端部に形成した突出縁部１１を介して円筒状素材１の軸方向に張力を付与するためのもので、本実施例においては、回転支持台６に対向して、回転支持台６に対して接離可能に配設した芯押し台７にロッド４２及びベアリング４３を介して取り付けた円筒状部材４１からなり、この円筒状部材４１の内周側に張り出した内周縁部４１ａを、円筒状素材１の突出縁部１１に当接（本実施例においては、内周縁部４１ａの下面を突出縁部１１の上面に当接）させて、突出縁部１１を介して円筒状素材１の軸方向に張力を付与することができるようにしている。
これにより、張力付与機構４の円筒状素材１との接触部である円筒状部材４１は、芯押し台７にロッド４２及びベアリング４３を介して取り付けられることによって、マンドレル２に従動して共に回転するとともに、マンドレル２の軸方向に移動可能に設けられることになる。 The tension imparting mechanism 4 is for imparting tension in the axial direction of the cylindrical material 1 via the protruding edge portion 11 formed at the open end of the cylindrical material 1. In this embodiment, the tension support mechanism 4 is a rotation support base. 6 is composed of a cylindrical member 41 attached to a core pushing table 7 disposed so as to be able to contact and separate from the rotation support table 6 via a rod 42 and a bearing 43, and the inner periphery of the cylindrical member 41 The inner peripheral edge 41a protruding to the side is brought into contact with the protruding edge 11 of the cylindrical material 1 (in this embodiment, the lower surface of the inner peripheral edge 41a is in contact with the upper surface of the protruding edge 11) to protrude. Tension can be applied in the axial direction of the cylindrical material 1 via the edge 11.
Thereby, the cylindrical member 41 which is a contact portion with the cylindrical material 1 of the tension applying mechanism 4 is attached to the core push pad 7 via the rod 42 and the bearing 43, thereby rotating together with the mandrel 2. In addition, it is provided so as to be movable in the axial direction of the mandrel 2.

ロッド４２は、４本（ローラ３の台数及び配置によって、３本とすることもできる。）を、平面視して正四角形の頂点に位置に配置した構成とし、これにより、ロッド４２間の隙間を通してローラ３を位置させて、円筒状素材１の外周側からローラ３で押圧するしごき加工を施すことができるようにしている。   The four rods 42 (which may be three depending on the number and arrangement of the rollers 3) are arranged at the vertices of a regular square in plan view. The roller 3 is positioned so that ironing can be performed by pressing the roller 3 from the outer peripheral side of the cylindrical material 1.

張力付与機構４を取り付けるようにした芯押し台７には、円筒状素材１に、図３に示す従来例のように、マンドレル２に被せるようにして装着したときに、マンドレル２の先端部によって支持することができるように端部の一部分のみを閉鎖したもの（マンドレル２の先端面の中心部を露出させることができるもの）を用いる場合は、マンドレル軸芯支持機構（図示省略）を設け、マンドレル２を両持ちで回転させるようにすることができる。
なお、円筒状素材１に、本実施例のように、マンドレル２に被せるようにして装着したときに、マンドレル２の先端部によって支持することができるように端部を閉鎖した有底状のものを用いる場合は、マンドレル軸芯支持機構を設けず、マンドレル２を片持ちで回転させるようにする。 When the core support 7 to which the tension applying mechanism 4 is attached is attached to the cylindrical material 1 so as to cover the mandrel 2 as in the conventional example shown in FIG. In the case of using the one in which only a part of the end portion is closed so that it can be supported (one that can expose the central portion of the tip surface of the mandrel 2), a mandrel shaft core support mechanism (not shown) is provided, The mandrel 2 can be rotated with both ends.
In addition, when the cylindrical material 1 is mounted so as to cover the mandrel 2 as in the present embodiment, the bottomed material has a closed end so that it can be supported by the tip of the mandrel 2. Is used, the mandrel shaft core support mechanism is not provided, and the mandrel 2 is rotated in a cantilever manner.

支持機構５は、張力付与機構４との間で円筒状素材１の突出縁部１１を挟持するためのもので、本実施例においては、回転支持台６に移動機構５２を介して取り付けた円筒状部材５１からなり、この円筒状部材５１の端部５１ａを、円筒状素材１の突出縁部１１に当接（本実施例においては、端部５１ａの上面を突出縁部１１の下面に当接）させて、突出縁部１１を介して円筒状素材１を軸方向に支持することができるようにしている。
これにより、支持機構５の円筒状素材１との接触部である円筒状部材５１は、回転支持台６に移動機構５２を介して取り付けられることによって、マンドレル２に従動して共に回転するとともに、マンドレル２の軸方向に移動可能に設けられることになる。 The support mechanism 5 is for sandwiching the protruding edge portion 11 of the cylindrical material 1 with the tension applying mechanism 4. In the present embodiment, the support mechanism 5 is a cylinder attached to the rotary support base 6 via the moving mechanism 52. The end 51a of the cylindrical member 51 is brought into contact with the protruding edge 11 of the cylindrical material 1 (in this embodiment, the upper surface of the end 51a is brought into contact with the lower surface of the protruding edge 11). And the cylindrical material 1 can be supported in the axial direction via the protruding edge portion 11.
Thereby, the cylindrical member 51 which is a contact part with the cylindrical raw material 1 of the support mechanism 5 is attached to the rotation support base 6 via the moving mechanism 52 and is rotated together with the mandrel 2. It is provided so as to be movable in the axial direction of the mandrel 2.

ここで、支持機構５の移動機構５２には、油圧シリンダ等のアクチューエータやばね機構を、また、芯押し台７の駆動機構（図示省略）には、油圧シリンダ等のアクチューエータを、好適に用いることができる。   Here, an actuator or a spring mechanism such as a hydraulic cylinder is used for the moving mechanism 52 of the support mechanism 5, and an actuator such as a hydraulic cylinder is used for the drive mechanism (not shown) of the core pusher 7. It can be used suitably.

また、支持機構５は、本実施例のように、回転支持台６に移動機構５２を介して取り付けるほか、支持機構５を、張力付与機構４に対して可動に構成したクランプ構造とし、張力付与機構４側に取り付けるようにすることもできる。   Further, the support mechanism 5 is attached to the rotation support base 6 via the moving mechanism 52 as in this embodiment, and the support mechanism 5 is configured to be clamped so as to be movable with respect to the tension applying mechanism 4 so that tension is applied. It can also be attached to the mechanism 4 side.

さらに、支持機構５は、しごき加工を施した円筒状素材１の突出縁部１１を支持した状態で、移動機構５２によって、支持機構５をマンドレル２の先端側に向けて移動させることにより、円筒状素材１をマンドレル２から脱型するようにすることができる。   Further, the support mechanism 5 moves the support mechanism 5 toward the distal end side of the mandrel 2 by the moving mechanism 52 in a state where the protruding edge portion 11 of the cylindrical material 1 subjected to the ironing process is supported. The shaped material 1 can be removed from the mandrel 2.

支持機構５を取り付けるようにした回転支持台６には、マンドレル２の内部を通って、しごき加工を施した円筒状素材１の閉鎖（一部閉鎖）された端部を押圧するノックアウト機構（図示省略）を併設するようにすることができる。   A rotary support base 6 to which the support mechanism 5 is attached is provided with a knockout mechanism (illustrated) that presses the closed (partially closed) end of the ironing-processed cylindrical material 1 through the inside of the mandrel 2. (Omitted) can be added.

次に、この円筒状素材のスピニング装置の動作について説明する。   Next, the operation of the cylindrical material spinning apparatus will be described.

まず、図１−１（ａ）に示すように、円筒状素材１をマンドレル２に被せるようにして装着する。   First, as shown in FIG. 1A, the cylindrical material 1 is mounted so as to cover the mandrel 2.

次に、図１−１（ｂ）に示すように、芯押し台７を回転支持台６に対して接近させることにより、円筒状素材１の突出縁部１１を張力付与機構４の円筒状部材４１の内周縁部４１ａと支持機構５の円筒状部材５１の端部５１ａとで挟持するようにする。   Next, as shown in FIG. 1-1 (b), the protruding edge 11 of the cylindrical material 1 is made to be a cylindrical member of the tension applying mechanism 4 by bringing the core pressing base 7 closer to the rotation support base 6. The inner peripheral edge portion 41a of 41 and the end portion 51a of the cylindrical member 51 of the support mechanism 5 are sandwiched.

この状態で、さらに、芯押し台７を回転支持台６に対して接近させる（芯押し台７の駆動機構による押圧力を、支持機構５の移動機構５２による押圧力よりも大きくなるように設定するようにする。）ことにより、張力付与機構４によって、円筒状素材１の開放端部に形成した突出縁部１１を介して円筒状素材１の軸方向に張力を付与しながら（このとき、張力付与機構４の円筒状部材４１の内周縁部４１ａと支持機構５の円筒状部材５１の端部５１ａとは、円筒状素材１の突出縁部１１を挟持した状態で、回転支持台６に対して接近する方向に移動する。）、円筒状素材１の外周側からローラ３で押圧するしごき加工を施すことによって円筒状素材１の伸長と薄肉化を図るようにする。   In this state, the core push table 7 is further moved closer to the rotation support stand 6 (the pressing force by the drive mechanism of the core push stand 7 is set to be larger than the pressing force by the moving mechanism 52 of the support mechanism 5). Thus, while applying tension in the axial direction of the cylindrical material 1 through the protruding edge portion 11 formed at the open end of the cylindrical material 1 by the tension applying mechanism 4 (at this time, The inner peripheral edge portion 41a of the cylindrical member 41 of the tension applying mechanism 4 and the end portion 51a of the cylindrical member 51 of the support mechanism 5 are attached to the rotary support base 6 with the protruding edge portion 11 of the cylindrical material 1 sandwiched therebetween. The cylindrical material 1 is stretched and thinned by applying a squeezing process that is pressed by the roller 3 from the outer peripheral side of the cylindrical material 1.

これにより、円筒状素材１の突出縁部１１の保持力を高めることができ、円筒状素材１の突出縁部１１に特殊な加工を行ったり、シワの発生の要因となる張力を下げてしごき加工を行ったりする等の回避方法を採用しなくても、円筒状素材１の軸方向に大きな張力を作用させた場合でも、円筒状素材１に形成した突出縁部１１が変形し、張力付与機構４から抜けて、加工を行うことができなくなってしまうことがないようにすることができ、スピニング成形の作業効率を向上することができる。   As a result, the holding force of the protruding edge 11 of the cylindrical material 1 can be increased, and the protruding edge 11 of the cylindrical material 1 can be specially processed, or the tension that causes wrinkles can be lowered and ironed. Even when a avoidance method such as processing is not employed, even when a large tension is applied in the axial direction of the cylindrical material 1, the protruding edge 11 formed on the cylindrical material 1 is deformed and tension is applied. It is possible to prevent the mechanism 4 from coming off and becoming unable to perform processing, and the working efficiency of spinning molding can be improved.

そして、しごき加工が完了すると、図１−２（ａ）に示すように、芯押し台７を回転支持台６に対して離間させることにより、張力付与機構４をマンドレル２の先端側に向けて、そして、マンドレル２から離脱するように移動するようにするとともに、支持機構５によって、しごき加工を施した円筒状素材１の突出縁部１１を支持した状態で、移動機構５２によって、支持機構５をマンドレル２の先端側に向けて移動させることにより、円筒状素材１をマンドレル２から脱型するようにする。   When the ironing process is completed, the tension applying mechanism 4 is directed toward the tip end side of the mandrel 2 by separating the core pressing base 7 from the rotation support base 6 as shown in FIG. Then, while moving so as to be detached from the mandrel 2, the support mechanism 5 is supported by the moving mechanism 52 in a state where the protruding edge portion 11 of the cylindrical material 1 subjected to ironing is supported by the support mechanism 5. Is moved toward the distal end side of the mandrel 2, so that the cylindrical material 1 is removed from the mandrel 2.

この場合、張力付与機構がマンドレルの先端側に向けて移動するのと同時に、支持機構５がしごき加工を施した円筒状素材１の突出縁部１１を支持した状態でマンドレル２の先端側に向けて移動するようにすることができる。
この動作は、芯押し台７の駆動機構による押圧力をなくすことにより、支持機構５の移動機構５２による押圧力が大きくなるようにすることで実施することができる。 In this case, simultaneously with the movement of the tension applying mechanism toward the tip side of the mandrel, the support mechanism 5 is directed toward the tip side of the mandrel 2 while supporting the protruding edge portion 11 of the cylindrical material 1 subjected to ironing. Can be moved.
This operation can be performed by increasing the pressing force by the moving mechanism 52 of the support mechanism 5 by eliminating the pressing force by the driving mechanism of the core pusher 7.

これにより、しごき加工を施した円筒状素材１をマンドレル２の先端側に向けて移動することにより行う、しごき加工を施した円筒状素材１のマンドレル２からの脱型作業を、円滑に行うことができるとともに、特に、芯押し台７の駆動機構による押圧力をなくすことにより、支持機構５の移動機構５２による押圧力によって自動的に円筒状素材１をマンドレル２から脱型するようにすることでサイクルタイムを短縮化でき、スピニング成形の作業効率を向上することができる。   Thereby, the demolding operation from the mandrel 2 of the cylindrical material 1 subjected to the ironing process performed by moving the cylindrical material 1 subjected to the ironing process toward the tip side of the mandrel 2 is performed smoothly. In particular, the cylindrical material 1 is automatically removed from the mandrel 2 by the pressing force of the moving mechanism 52 of the support mechanism 5 by eliminating the pressing force of the driving mechanism of the core pusher 7. Thus, the cycle time can be shortened and the working efficiency of spinning molding can be improved.

また、ローラ３は、ローラ待機位置（張力付与機構４と干渉しない外側位置）からしごき加工位置への移動させることによって、張力付与機構４のロッド４２間の隙間を通して位置させて、円筒状素材１の外周側からローラ３で押圧するしごき加工を施すことができるようにしているが、ローラ３０の動作、具体的には、ローラ３０のローラ待機位置からしごき加工位置への移動及びしごき加工位置からローラ待機位置への移動と、張力付与機構４のマンドレル２の軸方向の移動とを同期させることができる。   In addition, the roller 3 is moved from the roller standby position (the outer position that does not interfere with the tension applying mechanism 4) to the ironing position, so that the roller 3 is positioned through the gap between the rods 42 of the tension applying mechanism 4, and the cylindrical material 1 Can be performed by pressing the roller 3 from the outer peripheral side, but the operation of the roller 30, specifically, the movement of the roller 30 from the roller standby position to the ironing position and the ironing position from The movement to the roller standby position and the movement of the tension applying mechanism 4 in the axial direction of the mandrel 2 can be synchronized.

これにより、ローラ３と張力付与機構４とが干渉しないようにするとともに、サイクルタイムを短縮化でき、スピニング成形の作業効率を向上することができる。   Thereby, while preventing the roller 3 and the tension | tensile_strength provision mechanism 4 from interfering, cycle time can be shortened and the working efficiency of spinning molding can be improved.

以上、本発明の円筒状素材のスピニング装置及びスピニング成形方法について、その実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   As mentioned above, although the spinning apparatus and spinning shaping | molding method of the cylindrical material of this invention were demonstrated based on the Example, this invention is not limited to the structure described in the said Example, and does not deviate from the meaning. The configuration can be changed as appropriate within the range.

本発明の円筒状素材のスピニング装置及びスピニング成形方法は、円筒状素材の軸方向に大きな張力を作用させた場合でも、円筒状素材に形成した突出縁部が変形し、張力付与機構から抜けてしまうことがなく、また、しごき加工を施した円筒状素材をマンドレルの先端側に向けて移動することにより行う、しごき加工を施した円筒状素材のマンドレルからの脱型作業を、円滑に行うことができるとともに、特に、サイクルタイムを短縮化できるという特性を有していることから、円筒状素材のスピニング装置及びスピニング成形方法の用途に好適に用いることができる。   According to the spinning device and spinning forming method of the cylindrical material of the present invention, even when a large tension is applied in the axial direction of the cylindrical material, the protruding edge portion formed on the cylindrical material is deformed and comes off the tension applying mechanism. In addition, smooth removal of the ironing-processed cylindrical material from the mandrel by moving the ironing-processed cylindrical material toward the tip of the mandrel In particular, since it has a characteristic that the cycle time can be shortened, it can be suitably used for a cylindrical material spinning device and a spinning molding method.

１ 円筒状素材
１１ 突出縁部
２ マンドレル
３ ローラ
４ 張力付与機構
４１ 円筒状部材
４１ａ 内周縁部
４２ ロッド
４３ ベアリング
５ 支持機構
５１ 円筒状部材
５１ａ 端部
５２ 移動機構
６ 回転支持台
７ 芯押し台 DESCRIPTION OF SYMBOLS 1 Cylindrical material 11 Protruding edge 2 Mandrel 3 Roller 4 Tension applying mechanism 41 Cylindrical member 41a Inner peripheral edge 42 Rod 43 Bearing 5 Support mechanism 51 Cylindrical member 51a End 52 Moving mechanism 6 Rotating support stand 7 Core push stand

Claims (7)

金属製の円筒状素材をマンドレルに被せるようにして装着し、該円筒状素材の軸方向に張力を付与しながら、円筒状素材の外周側からローラで押圧するしごき加工を施すことによって円筒状素材の伸長と薄肉化を図るようにした円筒状素材のスピニング装置において、円筒状素材の開放端部に形成した突出縁部を介して円筒状素材の軸方向に張力を付与する張力付与機構と、該張力付与機構との間で円筒状素材の突出縁部を挟持する支持機構とを備え、円筒状素材の突出縁部を張力付与機構と支持機構とで挟持した状態で、円筒状素材の軸方向に張力を付与しながら、しごき加工を施すようにしたことを特徴とする円筒状素材のスピニング装置。   Cylindrical material is attached by covering the mandrel with a metal cylindrical material and applying a squeezing process that presses with a roller from the outer peripheral side of the cylindrical material while applying tension in the axial direction of the cylindrical material. In a spinning device for a cylindrical material designed to extend and reduce the thickness of the cylindrical material, a tension applying mechanism that applies tension in the axial direction of the cylindrical material via a protruding edge formed at the open end of the cylindrical material; A support mechanism for holding the protruding edge portion of the cylindrical material between the tension applying mechanism and the shaft of the cylindrical material with the protruding edge portion of the cylindrical material held between the tension applying mechanism and the support mechanism. A spinning device for a cylindrical material, wherein ironing is performed while applying tension in the direction. しごき加工を施した後、前記支持機構が、しごき加工を施した円筒状素材の突出縁部を支持した状態で、マンドレルの先端側に向けて移動することにより、円筒状素材をマンドレルから脱型するようにしたことを特徴とする請求項１に記載の円筒状素材のスピニング装置。   After performing ironing, the support mechanism supports the protruding edge of the cylindrical material that has been ironed and moves toward the tip of the mandrel, thereby removing the cylindrical material from the mandrel. The spinning device for a cylindrical material according to claim 1, wherein the spinning device is a cylindrical material spinning device. 前記張力付与機構及び支持機構の円筒状素材との接触部が、それぞれマンドレルと共に回転するとともに、マンドレルの軸方向に移動可能に設けられてなることを特徴とする請求項１又は２に記載の円筒状素材のスピニング装置。   3. The cylinder according to claim 1, wherein contact portions of the tension applying mechanism and the cylindrical material of the support mechanism are provided so as to rotate together with the mandrel and to be movable in the axial direction of the mandrel. -Like material spinning device. 金属製の円筒状素材をマンドレルに被せるようにして装着し、該円筒状素材の軸方向に張力を付与しながら、円筒状素材の外周側からローラで押圧するしごき加工を施すことによって円筒状素材の伸長と薄肉化を図るようにした円筒状素材のスピニング成形方法において、円筒状素材の突出縁部を、円筒状素材の開放端部に形成した突出縁部を介して円筒状素材の軸方向に張力を付与する張力付与機構と、該張力付与機構との間で円筒状素材の突出縁部を挟持する支持機構とで挟持した状態で、円筒状素材の軸方向に張力を付与しながら、しごき加工を施すようにしたことを特徴とする円筒状素材のスピニング成形方法。   Cylindrical material is attached by covering the mandrel with a metal cylindrical material and applying a squeezing process that presses with a roller from the outer peripheral side of the cylindrical material while applying tension in the axial direction of the cylindrical material. In a spinning method of a cylindrical material that is intended to extend and thin the cylindrical material, the protruding edge of the cylindrical material is connected to the axial direction of the cylindrical material via the protruding edge formed at the open end of the cylindrical material. While applying a tension in the axial direction of the cylindrical material in a state of being sandwiched between a tension applying mechanism that applies tension to the tensioning mechanism and a support mechanism that sandwiches the protruding edge portion of the cylindrical material between the tension applying mechanism, A spinning method for a cylindrical material characterized by ironing. しごき加工を施した後、前記支持機構が、しごき加工を施した円筒状素材の突出縁部を支持した状態で、マンドレルの先端側に向けて移動することにより、円筒状素材をマンドレルから脱型するようにしたことを特徴とする請求項４に記載の円筒状素材のスピニング成形方法。   After performing ironing, the support mechanism supports the protruding edge of the cylindrical material that has been ironed and moves toward the tip of the mandrel, thereby removing the cylindrical material from the mandrel. The spinning forming method for a cylindrical material according to claim 4, wherein the spinning method is performed. 前記張力付与機構及び支持機構の円筒状素材との接触部が、それぞれマンドレルと共に回転するとともに、マンドレルの軸方向に移動可能に設けられてなり、しごき加工を施した後、張力付与機構がマンドレルの先端側に向けて移動するのと同時に、支持機構がしごき加工を施した円筒状素材の突出縁部を支持した状態でマンドレルの先端側に向けて移動するようにしたことを特徴とする請求項５に記載の円筒状素材のスピニング成形方法。   The contact portions of the tension applying mechanism and the support mechanism with the cylindrical material are respectively rotated with the mandrel and are movable in the axial direction of the mandrel, and after the ironing process, the tension applying mechanism is The movement toward the front end side and at the same time, the support mechanism moves toward the front end side of the mandrel while supporting the protruding edge portion of the cylindrical material subjected to ironing. 5. A method for spinning a cylindrical material according to 5. 前記ローラのローラ待機位置からしごき加工位置への移動及びしごき加工位置からローラ待機位置への移動を、張力付与機構のマンドレルの軸方向の移動に同期させて行うようにしたことを特徴とする請求項６に記載の円筒状素材のスピニング成形方法。   The movement of the roller from the roller standby position to the ironing position and the movement from the ironing position to the roller standby position are performed in synchronization with the axial movement of the mandrel of the tension applying mechanism. Item 7. A method for spinning a cylindrical material according to Item 6.
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