JPS59125231A - Forming method of pipe frame - Google Patents
Forming method of pipe frameInfo
- Publication number
- JPS59125231A JPS59125231A JP23319782A JP23319782A JPS59125231A JP S59125231 A JPS59125231 A JP S59125231A JP 23319782 A JP23319782 A JP 23319782A JP 23319782 A JP23319782 A JP 23319782A JP S59125231 A JPS59125231 A JP S59125231A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- frame
- bending
- welding
- pipe material
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は車両用座席等に用いられるノ々イブフレームの
成型方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for molding a knobbly frame used for vehicle seats and the like.
従来この種のシートのパイプフレームの製造において管
材の端部間の溶接接合は両端面を突き合せ溶接するか両
端部の内径部に亘って中子鋼材を嵌挿した後、両端部と
中子鋼材とを夫々溶接していたが、前者の場合は溶接の
際に飛散する溶金が管材の内空部内に入り、そのま貫封
入さhてしまい、それが内空部を移動して騒音を発し、
使用者に不快感を与えることになり又、後者の場合は管
材の両端部とも中子鋼材に対して溶接しなければならず
溶接作業忙手数を要し、しかも中子鋼材を介在すること
によりパイプフレーム自体の重量が増加することになり
、軽欧化が望1れる車両用シートにおいては好ましくな
い等の不都合があった。Conventionally, in manufacturing this type of sheet pipe frame, the ends of the pipe material are welded together by butt welding, or by inserting a core steel material across the inner diameter of both ends, and then connecting both ends to the core. However, in the former case, the molten metal scattered during welding enters the inner cavity of the pipe material and is encapsulated, causing noise as it moves through the inner cavity. emits,
This causes discomfort to the user, and in the latter case, both ends of the pipe must be welded to the core steel, which requires a lot of welding work. This increases the weight of the pipe frame itself, which is undesirable for vehicle seats that are expected to be lightweight.
そこで本発明は斯る点に鑑みてなされたもので、パイプ
フレームの管材端部間の溶接接合において中間部材を用
いることなく芯合せが正確に行なえると共に、溶接作業
が簡素化され又、溶金が管材内へ浸入することなく溶接
を行なえるようにしたパイプフレームの成型方法を提供
するものである。The present invention has been made in view of the above problems, and it is possible to accurately align the ends of pipes of a pipe frame without using an intermediate member, simplify the welding work, and reduce the amount of welding. To provide a method for forming a pipe frame that allows welding without gold penetrating into the pipe material.
即ち本発明は上述の目的を達成するために直線状の管材
の一端部をすえ込み加工により他端部の内径とほぼ等し
い外径に圧縮形成し、次いで一端部の圧縮小径部を他端
部に重ね合わすように曲げ加工により所要形状に屈曲し
た後、重ね合わせ端部間をその軸方向に開き両端部を対
向させて一端部の圧縮小径部を他端部の内径部に圧入口
、この圧入部を外側から加干し溶接して無端状のフレー
ムを形成するようにしたものである。That is, in order to achieve the above-mentioned object, the present invention compresses one end of a straight pipe material to an outer diameter that is approximately equal to the inner diameter of the other end by swaging, and then compresses the compressed small diameter portion of one end to the other end. After bending into the desired shape by bending so as to overlap them, the overlapped ends are opened in the axial direction and both ends are opposed, and the compression small diameter part of one end is inserted into the inner diameter part of the other end. The press-fit portion is welded from the outside to form an endless frame.
以下図面を参照して本発明を適用するパイプフレームの
製造工程の一例を説明する。An example of a process for manufacturing a pipe frame to which the present invention is applied will be described below with reference to the drawings.
先ず所要長さで回線状の管材P(第2図A)を供給ホッ
パ(1)に多数収容してお才、この供給ホッパ(1)か
ら一本の管材PをバネクランプCの溶接機(2)の溶接
治具(2a)上にセットする。この管材Pのセット状態
を近接スイッチ(1g1示せず)等により確認した後、
バネクランプ用パーツフィーダより整列さねているバネ
クランプCを所要数(本例では6個)同時にセットさせ
管材Pの所定位膚に同時に溶接する(第21週B)。こ
の溶接通電後、即ちバネクランプCの溶接後管材Pを払
い出しキツカにてシュート(2b)上に搬出させストッ
クさせる。First, a large number of line-shaped pipes P (Fig. 2 A) of the required length are stored in the supply hopper (1), and one pipe P is welded from the supply hopper (1) by a spring clamp C welding machine ( Set it on the welding jig (2a) of 2). After checking the set state of this pipe material P using a proximity switch (1g1 not shown),
A required number of spring clamps C (six in this example) are set at the same time from a parts feeder for spring clamps and welded to the skin of the pipe material P at a predetermined position (21st week B). After this welding energization, that is, after the welding of the spring clamp C, the pipe material P is discharged and carried out onto the chute (2b) using a picker to be stocked.
このストックされし管材Pを取出機構(図示せず)によ
り一本ずつ取り出し前半の管材搬送機構(3a)の透溝
(3a)の中に投入する。この管材搬送機構(3a)の
透溝(3a)の中に投入された管材Pは次工程のすえ込
機構(4)に送〈られ、一端部Plがすえ込み加工によ
り他端部の内径とl”Jぼ等しい外径に圧縮形成される
(第2図C)。このようにして、すえ込み加工された管
材Pは後半の管材搬送機構(3b)により、位置決め機
構(5)に移送さね、すえ込み加工部、即ち一端部゛の
圧縮小径部PlとバネクランプCが正位置となるように
位置決めさ第1る(第2図D)。この際、位置決め機構
(5)に管材Pが存在している状態で管材搬送機構(3
a)とすえ込機構(4)Kも操り返し管材が送り込剪れ
ている。位置決め機構(5)において、位置決めされた
管材Pは、フィンガーチャック搬送機構(6)によって
上述の位置決めされた状態のまま多曲ベンド機構(7)
に移送されセットされる。この場合、管材Pの位置決め
が狂わないように多曲ベンド機t4 (71において管
材Pがクランプされる虜でフィンガーチャック搬送機構
(6)によって保持されており、クランプ確認後、フィ
ンガーチャック(6a)が開放され、フィンガーチャッ
ク搬送機構(6)は多曲ベンド機m (71から離隔さ
れる。多曲ベンド機構(7)においてクランプされた管
材Pは左右対称のベンドヘッダにより左右同時忙曲げ加
工を行なう。即ち管材Pの両端部側より順次内側へ予め
設定された芯管ストローク、距離及びベンド角度等に基
づキ曲げ加工P3 * P4 +p51 p6が行なわ
れる。この場合、一端部即ち圧縮小径部P1は他端部P
2と重ね合わされるように屈曲され一定のフレーム形状
に成形される(第2図E)。This stocked pipe material P is taken out one by one by a take-out mechanism (not shown) and placed into the through groove (3a) of the first half of the pipe material conveyance mechanism (3a). The pipe material P introduced into the through groove (3a) of the pipe material conveyance mechanism (3a) is sent to the swaging mechanism (4) in the next step, and one end Pl is swaged to match the inner diameter of the other end. The pipe material P thus swaged is compressed and formed to have an outer diameter approximately equal to 1"J (Fig. 2C). In this way, the swaged pipe material P is transferred to the positioning mechanism (5) by the latter pipe material conveyance mechanism (3b). First, position the swaging part, that is, the compressed small diameter part Pl at one end, and the spring clamp C in the correct position (Fig. 2D). At this time, the positioning mechanism (5) When the pipe material conveyance mechanism (3
In a) and the swaging mechanism (4) K, the return pipe material is also fed and sheared. In the positioning mechanism (5), the positioned pipe material P is transferred to the multi-bending mechanism (7) while remaining in the above-mentioned position by the finger chuck conveyance mechanism (6).
is transferred and set. In this case, in order to prevent the positioning of the pipe material P from going out of order, the pipe material P is clamped in the multi-bending machine t4 (71) and held by the finger chuck transport mechanism (6), and after checking the clamping, the finger chuck (6a) is opened, and the finger chuck transport mechanism (6) is separated from the multi-bending machine m (71).The pipe P clamped in the multi-bending mechanism (7) is subjected to left and right bending simultaneously by the symmetrical bend headers. That is, the bending process P3 * P4 + p51 p6 is performed sequentially inward from both ends of the tube material P based on the core tube stroke, distance, bend angle, etc. set in advance.In this case, one end, that is, the compressed small diameter portion P1 is the other end P
It is bent so as to be overlapped with 2 and formed into a certain frame shape (Fig. 2E).
この多曲ベンド機構(7)による、曲げ加工後筒2のフ
ィン・ガーチャック搬送機構(8)によりフレーム形状
管材Pfの左右直線部2個所をフィンガーチャックさせ
フレーム二体接合工程の圧入機構(9)へ移送しセット
させる。このセットされたフレーム形状管材Pfは内側
寄りの金型と外側寄り、の金型によりクランプされ重ね
合わされた両端部P1 * ”2間をその軸方向に開き
両端mP1.P2を対向させた状態で一端部の圧縮小径
部P1を他端部P2の内径部に圧入させる(第2図F)
。After bending by this multi-bending bending mechanism (7), the two right and left straight parts of the frame-shaped tube Pf are finger-chucked by the finger-chuck conveying mechanism (8) of the tube 2 after bending, and the press-fitting mechanism (9) is used in the frame two-piece joining process. ) and set it. This set frame-shaped pipe material Pf is clamped by the inner mold and the outer mold, and the overlapped ends P1 * 2 are opened in the axial direction with both ends mP1 and P2 facing each other. Press fit the compressed small diameter part P1 at one end into the inner diameter part of the other end P2 (Fig. 2F)
.
このフレーム形状管材Pfの圧入接合の終了確認後筒3
のフィンガーチャック搬送機構00によって溶接工程の
・溶接機構fillへ移送供給される。この供給された
フレーム形状管材Pfは上述の圧入機構(9)の圧入工
程と同様フレーム直線部を内外からクランプし、フレー
ム形状を一定に保持した状態において両端部P1.P2
の圧入接合部P7を電極ガン(Ila)により加圧し通
電させることにより溶接を行なう(第2図G)。この溶
接機構(lυにおいて溶接工程を完了したフレーム形状
管材Pfは、第4のフィンガーチャック搬送機構(I2
1によって立体ベンド機構(1皺に移送供給される。こ
の立体ベンド機構031に供給されたフレーム形状管材
Pfは、フィンガーチャックされた状態の才ま側面より
同市型(13a)押型(13b)により縦方向(前後方
向)に所定角度で曲げ加工される(第2図H)。After confirming the completion of press-fitting of this frame-shaped tube material Pf, the tube 3
The finger chuck transport mechanism 00 transports and supplies the welding material to the welding mechanism fill of the welding process. The supplied frame-shaped tube material Pf is clamped from the inside and outside of the frame straight portion in the same manner as in the press-fitting process of the press-fitting mechanism (9) described above, and with the frame shape held constant, both ends P1. P2
Welding is performed by pressurizing the press-fit joint P7 with an electrode gun (Ila) and energizing it (FIG. 2G). The frame-shaped pipe material Pf that has completed the welding process in this welding mechanism (lυ) is transferred to the fourth finger chuck transport mechanism (I2
The frame-shaped pipe material Pf supplied to the three-dimensional bending mechanism 031 is transferred and supplied to the three-dimensional bending mechanism (one wrinkle) by the three-dimensional bending mechanism 031. It is bent at a predetermined angle in the front-back direction (Fig. 2H).
尚、この際曲げ加工によりフレーム形状管材Pfの上辺
部の位置が変化することになるためフレーム形状管材P
fが立体ベンド機構[131に固定された時点で第4の
フィンガーチャック搬送機構l]21によるフィンガー
チャックは開放されている。このようにして中央部の縦
方向の曲げ加工が完了した後、加圧された1凍上下部の
ベンド加工部が作動しフレーム形状管材Pfの上下部の
曲げ加工が同時に行なわれる。このよう圧して、上下部
の曲げ加工が完了した後、先ず上部の曲げ加工部の加圧
が戻った時点で、第4のフィンガーチャック搬送機構+
121が管材Pfの芯ずれした距離だけシフトし4度フ
ィンガーチャックして搬出シュー) (141上に移送
することにより、パイプフレーム成形の1サイクルが終
了し第3図に示す如きバネクランプCが溶接さねたパイ
プフレームfが成形される。At this time, since the position of the upper side of the frame-shaped tube Pf changes due to the bending process, the frame-shaped tube Pf
At the time when f is fixed to the three-dimensional bending mechanism [131], the finger chuck by the fourth finger chuck transport mechanism l]21 is released. After the vertical bending of the central portion is completed in this way, the pressurized bending section of the lower part of the first frost lift is operated, and the upper and lower parts of the frame-shaped tube Pf are simultaneously bent. After applying pressure in this manner and bending the upper and lower parts, first, when the pressure on the upper bending part returns, the fourth finger chuck transport mechanism +
121 is shifted by the distance that the pipe material Pf is off-center, and is finger-chucked 4 times and carried out by the delivery shoe.) (By transferring it onto 141, one cycle of pipe frame forming is completed, and the spring clamp C as shown in Fig. 3 is welded. A tongue-and-groove pipe frame f is formed.
以上の工程は全自杓ないし手動操作によって連続的ない
し断続的に行なわれパイプフレームが生産される。The above steps are carried out continuously or intermittently using a full-scale ladle or by manual operation to produce a pipe frame.
以上の工程はバネクランプを溶接したパイプフレームの
成形工程であるがバネクランプが溶接されないパイプフ
レームでは上述の工程において、バネクランプ溶接工程
即ちバネクランプ溶接機構(2)は必要とせず管材を供
給ホッパ(1)から直接管材移送機構(3a)に投入す
ることになる。The above process is a forming process of a pipe frame to which a spring clamp is welded. However, in the case of a pipe frame to which a spring clamp is not welded, the spring clamp welding process, that is, the spring clamp welding mechanism (2) is not necessary, and the pipe material is supplied to the hopper. From (1), the pipe material is directly fed into the pipe material transfer mechanism (3a).
又、上述の工程において最後段工程の立体ペンド機構(
131は横型構成としたもの即ち金型を上下に対向して
配設した構成のものを用いることができる。In addition, in the above-mentioned process, the last step of the three-dimensional pend mechanism (
131 may have a horizontal configuration, that is, a configuration in which molds are disposed vertically facing each other.
以上のように本発明によれば所定長さで直線状の管材の
一端部をすえ込み加工により他端部の内径とほぼ等しい
外径に圧縮形成し、この一端部の圧縮小径部を他端部に
重ね合わすように曲げ加工により所要形状忙屈曲した後
、重ね合わせ端部間をその軸方向に一旦開争対向させて
一端部の圧縮小径部を他端部の内径部に圧入し、この圧
入部を外側から加圧し溶接して無端状のフレームを成形
するので、管材の両端部間の接合部の芯合わせが正確に
行なわれ、又溶接作業においては一端部の圧縮小径部が
他端部の内径部に圧入され、仮止めされた状態にあるの
でその接合部の軸芯方向に狂いが生じる恐れもなく又溶
接は内外方向に重ね合わされた状態にある両端部間妊お
いてのみ行なえば良いので溶接作業が簡素化される。し
かも溶接部は一端部の圧縮小径部が他端部に圧入されて
いるので溶接時の溶金が管材の中空部に浸入することも
なく、製品の歩留まりも向上し更に中子部材等を用いな
いので軽量なパイプフレームを得ることがで弁る等の効
果を有する。As described above, according to the present invention, one end of a straight pipe of a predetermined length is compressed to an outer diameter that is approximately equal to the inner diameter of the other end by swaging, and the compressed small diameter portion of this one end is formed at the other end. After bending into the desired shape by bending so as to overlap the parts, the overlapping ends are once opposed in the axial direction, and the compressed small diameter part of one end is press-fitted into the inner diameter part of the other end. Since the press-fit part is pressurized from the outside and welded to form an endless frame, the joint between both ends of the pipe material can be accurately aligned, and during welding work, the compressed small diameter part at one end is aligned with the other end. Since it is press-fitted into the inner diameter of the part and temporarily fixed, there is no risk of the joint being misaligned in the axial direction, and welding can only be done between the two ends that are overlapped in the inner and outer directions. This simplifies welding work. Moreover, since the welded part has a compressed small diameter part at one end and is press-fitted into the other end, the molten metal during welding does not penetrate into the hollow part of the pipe material, improving the product yield and making it possible to use core parts etc. Since there is no pipe frame, it is possible to obtain a lightweight pipe frame, which has the effect of closing the valve.
第1図は本発明を適用するパイプフレームの成型製電の
路線的正面図、第2図はパイプフレームの成型工程の説
明図、第3図は本発明により成形された一例の車両用シ
ートのパイプフレームの斜視図である。
図中、Pは管材、Plは−i/iii!部の圧縮小径部
、Plは他端部、P3.P4.P5.P6は曲げ加工部
、Plは溶接部である。Fig. 1 is a schematic front view of a pipe frame forming electric manufacturing process to which the present invention is applied, Fig. 2 is an explanatory diagram of the pipe frame forming process, and Fig. 3 is an example of a vehicle seat formed according to the present invention. It is a perspective view of a pipe frame. In the figure, P is the pipe material and Pl is -i/iii! Pl is the other end, P3. P4. P5. P6 is a bending part, and Pl is a welding part.
Claims (1)
径とほぼ等しい外径に圧縮形成し、次いで上記一端部の
圧縮小径部を他端部に重ね合すように曲げ加工により所
要形状に屈曲した後、上記重ね合せ端部間をその軸方向
に開六両端部を開放させて上記一端部の圧縮小径部を他
端部の内径部に圧入し、該圧入部を外側から加圧し溶接
して無端状のフレームを成型するようにしたことを特徴
とするパイプフレーム成型方法。One end of the straight pipe material is compressed to an outer diameter that is approximately equal to the inner diameter of the other end by swaging, and then bent into the desired shape so that the compressed small diameter part of the one end overlaps the other end. After bending, the overlapping ends are opened in the axial direction, and both ends are opened, and the compressed small diameter part of the one end is press-fitted into the inner diameter part of the other end, and the press-fitted part is pressurized from the outside. A pipe frame forming method characterized by forming an endless frame by welding.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23319782A JPS59125231A (en) | 1982-12-29 | 1982-12-29 | Forming method of pipe frame |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23319782A JPS59125231A (en) | 1982-12-29 | 1982-12-29 | Forming method of pipe frame |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59125231A true JPS59125231A (en) | 1984-07-19 |
JPH021580B2 JPH021580B2 (en) | 1990-01-12 |
Family
ID=16951264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23319782A Granted JPS59125231A (en) | 1982-12-29 | 1982-12-29 | Forming method of pipe frame |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59125231A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103273260A (en) * | 2012-11-10 | 2013-09-04 | 上海中远川崎重工钢结构有限公司 | Method for controlling size precision of three-dimensional-space-shaped pipe frame |
-
1982
- 1982-12-29 JP JP23319782A patent/JPS59125231A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103273260A (en) * | 2012-11-10 | 2013-09-04 | 上海中远川崎重工钢结构有限公司 | Method for controlling size precision of three-dimensional-space-shaped pipe frame |
Also Published As
Publication number | Publication date |
---|---|
JPH021580B2 (en) | 1990-01-12 |
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