JPS61123414A - Apparatus for producing multi-layered spiral pipe - Google Patents
Apparatus for producing multi-layered spiral pipeInfo
- Publication number
- JPS61123414A JPS61123414A JP24465984A JP24465984A JPS61123414A JP S61123414 A JPS61123414 A JP S61123414A JP 24465984 A JP24465984 A JP 24465984A JP 24465984 A JP24465984 A JP 24465984A JP S61123414 A JPS61123414 A JP S61123414A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- clearance
- gap
- size
- supply table
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8016—Storing, feeding or applying winding materials, e.g. reels, thread guides, tensioners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8041—Measuring, controlling or regulating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、帯板を螺旋状に複数層巻いて多層スパイラル
管を形成させる多層スフ4イラル管製造装置に関し、特
に高圧圧力容器の円筒部や高圧配管用大径鋼管等の製造
用に利用して好適なものである。Detailed Description of the Invention <Industrial Application Field> The present invention relates to a multilayer spiral pipe manufacturing apparatus for forming a multilayer spiral pipe by winding a plurality of layers of strips in a spiral shape, and particularly relates to a multilayer spiral pipe manufacturing apparatus for forming a multilayer spiral pipe by winding a plurality of strips in a spiral shape. It is suitable for use in manufacturing large-diameter steel pipes for high-pressure piping, etc.
〈従来の技術〉
従来、肉厚大径管材を製造するのに際してはスパイラル
方式の製管装置が用いられている。この装置は、帯板を
内張りとなる内筒に巻き付けて多層スパイラル管に成形
させるものであるから、帯板の幅に制限を受けることな
く任意の直径の肉厚大径管を製造することができ、しか
も多層巻きをも容易に行い得るので、高圧圧力容器用円
筒体や高圧配管用大径鋼管等の大径高圧用円筒体として
、一般に使用されることが多い。<Prior Art> Conventionally, a spiral-type pipe manufacturing apparatus has been used to manufacture thick-walled, large-diameter pipe materials. This device wraps the strip around the inner cylinder that serves as the lining and forms it into a multilayer spiral tube, so it is possible to manufacture thick, large-diameter tubes of any diameter without being limited by the width of the strip. Moreover, since it can be easily wound in multiple layers, it is generally used as a large-diameter high-pressure cylinder such as a cylinder for a high-pressure pressure vessel or a large-diameter steel pipe for high-pressure piping.
多層スパイラル管の製造においては、全層に互って隣接
する帯板端縁相互の良好な溶接が要求され、帯板を巻き
付ける際の端縁間の隙間寸法を許容値内に維持すること
が良好な溶接部を得るための重要課題の一つとなってい
る。しかるに、帯板はその製造過程における蛇行状の変
形発生が避けられず、又、巻き付けられる円筒体の僅か
な寸法誤差等も影響し、螺旋状に巻き付けた時に帯板の
隣接する端縁間の隙間寸法にばらつきを生じ、これが許
容値を外れると良好な溶接部が得られないこととなる。In the production of multilayer spiral pipes, good welding of the edges of adjacent strips in all layers is required, and it is necessary to maintain the gap size between the edges when winding the strips within tolerances. This is one of the important issues in obtaining a good weld. However, it is unavoidable that strips undergo meandering deformation during the manufacturing process, and slight dimensional errors in the cylindrical body around which they are wound can also affect the shape of the strip, resulting in distortion between adjacent edges of the strip when it is wound spirally. Variation occurs in the gap size, and if this deviates from the allowable value, it will not be possible to obtain a good weld.
このような不具合を除くことが出来る製管装置として、
第4図に示すような多層スノクイラル管製造装置が提案
されている。この装置は、帯板1が巻き付けられる内筒
2を回転させるとともに前記内筒2をその長手方向に移
動させる送り装置Aと、前記帯板1を内筒2に密着させ
る圧下ロール群3並びに隣接する帯板1端縁部間の隙間
自動検知器4を有する巻付は装置Bと。As a pipe manufacturing device that can eliminate such defects,
A multilayer snoquiral tube manufacturing apparatus as shown in FIG. 4 has been proposed. This device includes a feeding device A that rotates an inner tube 2 around which a strip 1 is wound and moves the inner tube 2 in its longitudinal direction, a group of rolling rolls 3 that brings the strip 1 into close contact with the inner tube 2, and an adjacent roller. The winding device B is equipped with an automatic gap detector 4 between the edges of the strip 1.
前記帯板1を供給する帯板供給台5を設けた供給装置C
とから構成されている。巻付は装置Bの圧下ロール群3
の各ロールはその圧下圧力を個々に調整し得るようにな
っている。供給装置Cは、ペイオフリール6に装架され
た帯板1をレベラ7.ピンチロール8.ガイド9.テン
ションロール10を順に経て内筒2の外周面に供給する
ものであるが、これら諸装置を支持している前記帯板供
給台5は、ベッド11上に敷設された一対のラック12
に駆動機13内の図示しないビニオンを噛み合わせ、前
記内筒2の長手方向に沿った方向に移動できる□ように
構成されている。A supply device C provided with a strip supply stand 5 for supplying the strip 1
It is composed of. Wrapping is done on roll group 3 of device B.
The rolling pressure of each roll can be adjusted individually. The supply device C feeds the strip plate 1 mounted on the payoff reel 6 to a leveler 7. Pinch roll8. Guide 9. The strip supply table 5 that supports these devices is supplied to the outer circumferential surface of the inner cylinder 2 through the tension roll 10 in order, and the strip supply table 5 that supports these devices is connected to a pair of racks 12 laid on a bed 11.
A pinion (not shown) in the drive unit 13 is engaged with the inner cylinder 2 so that it can move in the longitudinal direction of the inner cylinder 2.
この装置において隣接する帯板1端縁間の溶接用隙間の
調節を行うには、前記隙間自動検知器4で隙間寸法を検
知し、その検知結果に基づいて巻付は装knの圧下ロー
ル群3の圧下圧力を調整すると共に供給装置Cの帯板供
給台5を移動させることにより、帯板1の両端縁に負荷
する張力を調整する。即ち、隙間自動検知器4゜圧下ロ
ール群3の圧下装置、帯鋼供給台5の駆動機13並びに
巻付装置Bに設けられた自動溶接機14等の諸装置は、
配線15によってコンピュータを内蔵した中央制御盤1
6に連結されており、前記隙間自動検知器4の検知信号
は中央制御盤16に入力され、圧下ロール群3の圧下装
置及び帯鋼供給台5の駆動機13に作動指令が発せられ
る。圧下ロール群3は巻き付けられる帯板1の全幅に互
って圧力勾配を持たせて加圧され、帯板1両端縁部の圧
下圧力を増減させる。帯板供給台5は駆動機13内のピ
ニオンとラック12との噛み合いにより内筒2の長手方
向に移動することにより、帯板1の両端縁の張力を増減
させる。上記二つの手段を併用することてよって、隣接
する帯板1端縁間の隙間寸法を適正値に保つよう調節が
行われていた。In order to adjust the welding gap between the edges of adjacent strips 1 in this device, the gap size is detected by the automatic gap detector 4, and based on the detection result, the winding is performed on the rolling roll group of kn. The tension applied to both ends of the strip 1 is adjusted by adjusting the rolling pressure of the strip 1 and moving the strip supply table 5 of the supply device C. That is, various devices such as the automatic gap detector 4°, the rolling down device of the rolling roll group 3, the drive machine 13 of the strip steel supply table 5, and the automatic welding machine 14 provided in the winding device B, are as follows:
Central control panel 1 with built-in computer via wiring 15
6, the detection signal from the automatic gap detector 4 is input to a central control panel 16, and an operation command is issued to the rolling device of the rolling roll group 3 and the driving machine 13 of the strip supply table 5. The rolling roll group 3 is pressurized with a pressure gradient across the entire width of the strip 1 to increase or decrease the rolling pressure at both end edges of the strip 1. The strip supply stand 5 moves in the longitudinal direction of the inner tube 2 by meshing with the pinion in the drive machine 13 and the rack 12, thereby increasing or decreasing the tension on both ends of the strip 1. By using the above two means in combination, the gap between the edges of adjacent strips 1 is adjusted to maintain an appropriate value.
〈発明が解決しようとする問題点〉
従来の多層スパイラル管製造装置における帯板端縁部の
隙間調節方法では、適正な溶接速度に対応して前記隙間
寸法を完全に許容値内に維持することが困難であり、又
、帯板の片端縁部に大きな張力を与えると反対側の端縁
部には被巻付は部との間に許容値を超えた過大な層間隙
間が発生する不具合があった。<Problems to be Solved by the Invention> In the conventional method for adjusting the gap at the edge of the strip in a multilayer spiral pipe manufacturing apparatus, it is difficult to maintain the gap size completely within an allowable value in response to an appropriate welding speed. In addition, if a large tension is applied to one edge of the strip, an excessively large interlayer gap (exceeding the allowable value) will occur between the wrapping and the opposite edge. there were.
又、帯板の層1’d+隙間を解消する目的で、帯板の中
央部と両端縁部における加熱温度を変えられる帯板加熱
装置も提案されているが、帯板端縁同士の隙間寸法の制
御には高度の技術を要するため、前述のような帯板端縁
部間の隙間のばらつきの解消には有効でない。In addition, for the purpose of eliminating the layer 1'd + gap of the strip, a strip heating device that can change the heating temperature at the center and both edges of the strip has been proposed, but the gap size between the edges of the strip Since the control requires a high level of skill, it is not effective in eliminating the above-mentioned variation in the gap between the end edges of the strips.
本発明は以上のような従来の技術における問題点に鑑み
、帯板を螺旋状に巻き付けるに際し、隣接する帯板端縁
相互を溶接するに要する適当な隙間寸法のばらつきを少
なくして許容値内に維持し、良好な溶接部を得ると共に
層間隙間を極力小さくして高品質の多層スパイラル管を
製造し得る製造装置を提供することを目的とする。In view of the above-mentioned problems in the conventional technology, the present invention has been developed to reduce the variation in the appropriate gap size required for welding the edges of adjacent strips to each other when winding strips in a spiral manner, thereby keeping the gap size within the allowable value. It is an object of the present invention to provide a manufacturing apparatus capable of manufacturing a high-quality multilayer spiral pipe by maintaining a good welded part and minimizing the interlayer gap.
く問題点を解決するだめの手段〉
本発明においては、供給装置より巻付は装置に向かって
供給される帯板を板幅方向に温度勾配を持たせて加熱す
る手段を設け、その加熱によって帯板に所要の熱変形を
与え、この熱変形と前述の従来装置における供給装置の
移動によって付与される帯板の張力変動とを併用するこ
とによって、巻付は中の帯板隣接端縁部間の溶接用隙間
寸法を許容値内に維持し得る如く構成した。In the present invention, a means is provided for heating the strip plate fed from the feeding device toward the winding device with a temperature gradient in the width direction of the strip, and by the heating, By applying the required thermal deformation to the strip and using this thermal deformation together with the variation in tension on the strip caused by the movement of the feeding device in the conventional device described above, the winding is carried out at the adjacent edge of the inner strip. The structure was designed to maintain the welding gap size between the two parts within an allowable value.
即ち本発明の多層スパイラル管製造装置は、帯板が螺旋
状に巻き付けられる内筒を回転させると共に前記内筒を
その長手方向に移動させる送り装置と、前記帯板を前記
内筒に密着させる圧下ロール群と前記帯板の隣り合う端
縁部の隙間を検知する隙間自動検知器とを有する巻付は
装置と、前記帯板を前記内筒へ向けて供給する帯板供給
台を有する供給装置とからなる多層スパイラル管製造装
置において、前記帯板供給台を前記内筒の長手方向に沿
って移動させる供給台移動手段と、前記帯板供給台から
供給される前記帯板の表面と対向し且つ前記帯板をその
板幅方向に温度勾配を持たせて加熱する加熱装置とを設
けたことを特徴とするものである。ここで、前記供給台
移動手段並びに加熱装置は、それぞれ配線によってコン
ピュータを内蔵した中央制御盤に連結てれ、前記隙間自
動検知器は従来装置におけると同様、その検知信号を前
記中央制御盤に入力する如く配線されている。That is, the multilayer spiral pipe manufacturing apparatus of the present invention includes a feeding device that rotates an inner cylinder around which a band plate is spirally wound and moves the inner cylinder in its longitudinal direction, and a pressing unit that brings the band plate into close contact with the inner cylinder. a winding device having an automatic gap detector for detecting a gap between a group of rolls and the adjacent end edges of the strip; and a feeding device having a strip supply stand that supplies the strip toward the inner cylinder. A multilayer spiral pipe manufacturing apparatus comprising: a supply table moving means for moving the strip supply table along the longitudinal direction of the inner cylinder; Further, the present invention is characterized in that a heating device is provided for heating the band plate with a temperature gradient in the width direction of the band plate. Here, the supply table moving means and the heating device are each connected by wiring to a central control panel having a built-in computer, and the automatic gap detector inputs its detection signal to the central control panel as in the conventional device. It is wired accordingly.
く作 用〉
先ず中央制御盤に内筒の外径寸法、帯板の板厚、板幅寸
法等の諸データと共に帯板隣接端縁部間の隙間の規定寸
法が入力された上で、常法に従ってス/Jイラル管の製
造が開始される。Operation> First, the specified dimensions of the gap between the adjacent edges of the strips are input into the central control panel along with various data such as the outer diameter of the inner cylinder, the thickness of the strip, and the width of the strip. Manufacturing of spiral/J spiral tubes begins in accordance with the law.
帯板の溶接すべき隣接端縁部間の隙間は、隙間自動検知
器により常時監視されており、そのデータが中央制御盤
に入力され、中央制御盤はそのデータを即時解析して前
記加熱装置並びに帯板供給台駆動機に指令を発する。こ
の指令信号により、加熱装置の温度勾配が制御されて帯
板に所要の熱変形が与えられると共に帯板供給台の位置
が微調整され、これらの作用の併用によって帯板溶接用
隙間寸法のばらつきが許容値内に維持されるよ5調節が
行われ、自動溶接機による良好な溶接が確保される。The gap between the adjacent edges of the strips to be welded is constantly monitored by an automatic gap detector, and the data is input to the central control board, which immediately analyzes the data and controls the heating device. It also issues a command to the strip supply table drive machine. Based on this command signal, the temperature gradient of the heating device is controlled to give the strip the required thermal deformation, and the position of the strip supply table is finely adjusted, and the combination of these effects reduces the variation in the gap size for strip welding. 5 adjustments are made to maintain the values within tolerances to ensure good welding by the automatic welder.
なお、前述の第4図の従来装置において用いられている
圧下ロール群の加圧力制御による隙間調節手段は、本発
明においても併用することは勿論可能であるが、複合効
果がそれ程期待できないので適用しなくても良い。Note that the gap adjustment means by controlling the pressing force of the reduction roll group used in the conventional apparatus shown in FIG. You don't have to.
〈実施例〉
本発明による多層スパイラル管製造装置の一実施例の概
略構造を表す第1図に示すように、帯板1が巻き付けら
れる内筒2を回転させると共に前記内筒2を長手方向に
移動させる送り装置Aと、前記帯板1を内筒2に加圧拘
束する圧下ロール群3並びに隣接する帯板1端縁部の隙
間自動検知器4を有する巻付は装置Bと、前記帯板1を
供給する帯板供給台5を設けた供給装置Cと、前記供給
装置Cの帯板供給台5上の最も巻付装WB寄りの位置に
設置された加熱装置りとから構成されている。上記送り
装置1A及び巻伺は装置Bは第4図に示した従来装置の
場合と同様に構成されており、供給装置Cも従来装置と
同様に駆動機13の作動によって帯板供給台5を内筒2
の長手方向に沿った方向に移動させることができるよう
になっている。前記加熱装’tj1. Dは、帯板供給
台5より供給される帯板1の下面と対向し、帯板1全板
幅方向に温度勾配を持たせて加熱し得る如く構成されて
いる。この加熱装置り並びに前記供給装置Cの駆動機1
3は、それぞれ配線15によりコンピュータを内蔵した
中央制御盤16に連結されており、前記隙間自動検知器
4よりの入力データを受けて中央制御盤16より発せら
れる指令信号により。<Example> As shown in FIG. 1, which schematically shows the structure of an embodiment of the multilayer spiral pipe manufacturing apparatus according to the present invention, the inner cylinder 2 around which the strip plate 1 is wound is rotated, and the inner cylinder 2 is rotated in the longitudinal direction. A winding device B includes a feeding device A that moves the strip 1, a group of rolling down rolls 3 that pressurizes and restrains the strip 1 to the inner cylinder 2, and an automatic gap detector 4 at the edge of the adjacent strip 1; It consists of a supply device C provided with a strip supply table 5 for supplying the plate 1, and a heating device installed on the strip supply table 5 of the supply device C at a position closest to the winding device WB. There is. The above-mentioned feeding device 1A and winding device B are constructed in the same manner as in the conventional device shown in FIG. Inner cylinder 2
It can be moved in the longitudinal direction. The heating device 'tj1. D faces the lower surface of the strip 1 supplied from the strip supply table 5, and is configured to heat the strip 1 with a temperature gradient in the entire width direction. A driving machine 1 for this heating device and the supply device C
3 are each connected to a central control board 16 with a built-in computer through wiring 15, and a command signal is issued from the central control board 16 in response to input data from the automatic gap detector 4.
これらの作動が制御される。なお、隙間自動検知器4に
はレーザを利用した公知の自動検知器等が用いられる。These operations are controlled. Note that a known automatic detector using a laser or the like is used as the automatic gap detector 4.
前記加熱装置りの部分を拡大した第2図(a)及びその
平面形状を表す第2図(b)に示すように、帯板1下面
に対向し且つ板幅方向に複数個列設された例えば電気抵
抗発熱体等の発熱体17群を上面に配設した支持台18
は、脚19により帯板供給台5上に固設されている。支
持台18の前後端には帯板受はロール20が軸看され、
帯板1と発熱体17を適当な間隔に保ち、帯板1の巻付
けに際して円滑に発熱体17群の上方を通過させるよう
罠なっている。複数個の発熱体17はそれぞれ配線15
を介して中央制御盤】6に連結されている。As shown in FIG. 2(a), which is an enlarged view of the heating device part, and FIG. 2(b), which shows its planar shape, a plurality of heating devices are arranged in rows in the width direction of the strip 1, facing each other on the lower surface of the strip 1. For example, a support base 18 on which 17 groups of heating elements such as electric resistance heating elements are arranged
is fixed on the strip supply stand 5 by legs 19. At the front and rear ends of the support stand 18, the roll 20 of the band plate support is seen as an axis.
The band plate 1 and the heating element 17 are kept at an appropriate distance, and a trap is formed so that the band plate 1 can smoothly pass over the group of heating elements 17 when being wound. Each of the plurality of heating elements 17 is connected to the wiring 15.
It is connected to the central control panel ]6 via the.
第1図中、内筒2の右方端部に帯板1の先端を固着し、
内筒2を回転させながら供給される帯板1を圧下ロール
群3で加圧しつつ螺旋状に巻き取る。この作業において
、帯板1の僅かな蛇行、或いは内筒2又は帯鋼板1を巻
付は済みの被巻付は円筒体の外径、真円度、真直度等の
寸法誤差により、隣接する帯板1端縁相互の溶接用隙間
寸法が許容値の限度に近付いた時、この隙間寸法を監視
している隙間゛自動検知器4から中央制御盤16へ信号
を送り、中央制御盤16から帯板供給台5の駆動機13
並びに加熱装置りの発熱体17に作動指令が発せられる
。In FIG. 1, the tip of the band plate 1 is fixed to the right end of the inner cylinder 2,
The strip plate 1 supplied while rotating the inner cylinder 2 is wound up in a spiral shape while being pressurized by a group of rolling rolls 3. In this work, due to slight meandering of the strip 1, or the inner tube 2 or the wrapped steel strip 1 has already been wrapped, due to dimensional errors such as the outer diameter, roundness, straightness, etc. of the cylindrical body, When the welding gap size between the edges of the strip 1 approaches the allowable limit, a signal is sent from the gap automatic detector 4 that monitors this gap size to the central control board 16, and the central control board 16 Drive machine 13 of the strip supply table 5
An operation command is also issued to the heating element 17 of the heating device.
前記隙間寸法が広くなった時は、前記作動指令により駆
動機13内の図示しないピニオン及びラック12を介し
て帯板供給台5を自動的に第1図中、右方向に移動させ
、第1図中、帯板1の左側の張力を増加させると共に加
熱装置り中の複数個の発熱体17の電流を第1図中、左
端の発熱体から右端の発熱体に向って順次小さくなるよ
う自動的に発熱量を制御し、第1図中。When the gap size becomes wider, the operation command automatically moves the strip supply table 5 to the right in FIG. In the figure, the tension on the left side of the strip 1 is increased, and the current of the plurality of heating elements 17 in the heating device is automatically decreased from the leftmost heating element to the rightmost heating element in Figure 1. The amount of heat generated is controlled according to the conditions shown in Figure 1.
帯板1の左側が高温で右側が低温となるよう温度勾配を
持たせ、右側に湾曲させて前記隙間を狭くする。逆に、
巻付は中に隙間が狭くなった場合は、前記と左右逆の作
用を帯板1に与えて隙間調整を行う。かくして、隙間寸
法を常に許容値内に維持し、帯板1の巻付けを行うと同
時にその端縁部を圧下ロール群3で加圧拘束して自動溶
接機14により溶接を行う。A temperature gradient is provided so that the left side of the band plate 1 is high temperature and the right side is low temperature, and the gap is narrowed by curving it to the right side. vice versa,
If the gap becomes narrow during winding, the gap is adjusted by giving the band plate 1 the opposite effect on the left and right sides as described above. In this way, the gap size is always maintained within the allowable value, and at the same time as the band plate 1 is wound, its edge portion is pressurized and constrained by the reduction roll group 3, and welding is performed by the automatic welding machine 14.
前述の如く、隙間自動検知器4からのデータ信号を受け
て中央制御盤16では内蔵されたコンピュータで瞬時に
解析が行われ、加熱装置りの各発熱体17に指令が発せ
られて制御が行われるが、この発熱体制御は、例えばサ
イリスタを利用した位相制御によるトリガの位置を変え
る等、それぞれの供給電流を増減させて各々の発熱体1
7の単位時間当りの発熱量を調整することによってなさ
れる。As mentioned above, upon receiving the data signal from the automatic gap detector 4, the central control panel 16 instantaneously analyzes the data signal using the built-in computer, and issues commands to each heating element 17 of the heating device to perform control. However, this heating element control is performed by increasing or decreasing the supply current of each heating element 1, for example by changing the position of the trigger by phase control using a thyristor.
7 by adjusting the amount of heat generated per unit time.
なお、帯板1の板幅方向における温度差による変形量は
次の簡易式で表わすことができ、実験の結果、その近似
値が確認された。The amount of deformation due to the temperature difference in the width direction of the strip plate 1 can be expressed by the following simple formula, and an approximate value thereof was confirmed as a result of experiments.
ここで、bは帯板の板幅、tは帯板の加熱長さ、αは熱
膨張係数、ΔTは両端縁部間の温度差である。Here, b is the width of the strip, t is the heating length of the strip, α is the coefficient of thermal expansion, and ΔT is the temperature difference between both end edges.
加熱装置の他の実施例の側面形状を表す第3図(a)及
びそのB−B矢視断面構造、C−C矢視断面構造をそれ
ぞれ表す第3図(b) 、 (c)に示すように、帯板
1の下面に対向する発熱体17aの帯板1までの距離を
板幅方向に変化させることにより、帯板1に板幅方向に
温度勾配を持たせる如く構成されている。中央制御盤1
6から送られる作動指令は配線15を通じてサーボモー
タ21に与えられ、サーボモータ21が所要の回転数だ
け回転してピニオン22を介し発熱体17aを取付けた
発熱体取付は台23に連結された円弧形ギヤ24を回動
させる。帯板供給台5上に固設された支持台18に軸着
された発熱体取付は台23は、前記円弧形ギヤ24の回
動に伴って揺動し、その両端の帯板1からの距離が変え
られるようになっている。前記発熱体取付は台23上に
固設された発熱体17aは一体型のもので、上述のよう
にして中央制御盤16よりの指令により帯板1との板幅
方向の距離が変えられ、帯板lに与える輻射熱量を増減
することによυ板幅方向の温度勾配が与えられる。この
温度勾配によって帯板1を僅かに湾曲させ、巻き付けら
れた帯板の隣接端縁間隙間寸法を調節することは、前述
の実施例の場合と同様である。FIG. 3(a) shows the side shape of another example of the heating device, and FIGS. 3(b) and 3(c) show the cross-sectional structure taken along the line B-B and the cross-sectional structure taken along the line C-C, respectively. By changing the distance from the heating element 17a facing the lower surface of the strip 1 to the strip 1 in the strip width direction, the strip 1 is configured to have a temperature gradient in the strip width direction. Central control panel 1
The operation command sent from 6 is given to the servo motor 21 through the wiring 15, and the servo motor 21 rotates by the required number of rotations, and the heating element 17a is attached via the pinion 22. The arc gear 24 is rotated. The heating element mounting base 23, which is pivoted to a support base 18 fixedly installed on the strip supply base 5, swings with the rotation of the arc-shaped gear 24, and the base 23 swings from the strip plate 1 at both ends thereof. The distance can be changed. The heating element 17a fixed on the base 23 is of an integrated type, and the distance between the heating element 17a and the strip plate 1 in the width direction can be changed by commands from the central control panel 16 as described above. By increasing or decreasing the amount of radiant heat applied to the strip l, a temperature gradient in the width direction of the υ plate can be created. This temperature gradient causes the strip 1 to curve slightly and adjusts the gap between adjacent edges of the wrapped strip, as in the previous embodiment.
〈発明の効果〉
本発明装置によれば、帯板の巻取り直前に加熱装置によ
って板幅方向に温度勾配を持たせて加熱し、帯板に熱変
形を与えると共に帯板供給台の移動により帯板の張力を
調波し、これらの両件用を併用して隣接帯板端縁間の隙
間を調節するので、隙間寸法の調節が容易となり、帯板
の巻付は溶接に際して常にその隙間寸法を許容皿内に維
持することができ、良好な溶接部を得ることが可能とな
った。又、加熱装置により帯板を例えば100〜200
℃に加熱するため。<Effects of the Invention> According to the apparatus of the present invention, immediately before winding the strip, the heating device heats the strip with a temperature gradient in the strip width direction to give thermal deformation to the strip, and at the same time, the strip is heated by moving the strip supply table. Since the tension of the strip is harmonized and the gap between the edges of adjacent strips is adjusted by using both of these functions, it is easy to adjust the gap size, and the winding of the strip is always done to close the gap during welding. It was possible to maintain the dimensions within the allowable range and obtain a good weld. In addition, the strip plate is heated to a temperature of, for example, 100 to 200 by using a heating device.
for heating to °C.
巻付は後の冷却収縮により層間隙間も小さくなり、前記
溶接部の良好なことと併せて高品質の多層スパイラル管
を得ることができる。During winding, the interlayer gap becomes smaller due to subsequent cooling shrinkage, and in addition to the above-mentioned good welding, a high quality multilayer spiral tube can be obtained.
第1図は本発明による多層スパイラル管製造装置の一実
施例の外観を示す斜視図、第2図(a)はその加熱装置
の側面図、第2図(b)はその平面図、第3図(a)は
加熱装置の他の一実施例を示す側面図、第3図(b)は
そのB−B矢視断面図、第3図(C)FiそのC−C矢
視断面図、第4図は従来の多層ス/4’イラル管裂造装
置の一例を示す斜視図である。
図面中、
Aは送り装置。
Bは巻付は装置、
Cは供給装置。
Dは加熱装置。
1は帯板、
2は内筒、
3は圧下ロール群。
4は隙間自動検知器、
5は帯板供給台。
12はラック、
13は駆動機、
14は自動溶接機、
15は配線、
16は中央制御盤、
17.17aは発熱体でめる。FIG. 1 is a perspective view showing the appearance of an embodiment of the multilayer spiral pipe manufacturing apparatus according to the present invention, FIG. 2(a) is a side view of the heating device, FIG. 2(b) is a plan view thereof, and FIG. FIG. 3(a) is a side view showing another embodiment of the heating device, FIG. 3(b) is a sectional view taken along the line B-B, FIG. 3(C) is a sectional view taken along the line C-C, FIG. 4 is a perspective view showing an example of a conventional multilayer S/4' radial tube cleaving device. In the drawing, A is the feeding device. B is the winding device, C is the feeding device. D is a heating device. 1 is a strip plate, 2 is an inner cylinder, and 3 is a group of rolling rolls. 4 is an automatic gap detector, and 5 is a strip supply stand. 12 is a rack, 13 is a drive machine, 14 is an automatic welding machine, 15 is wiring, 16 is a central control panel, and 17.17a is a heating element.
Claims (1)
前記内筒をその長手方向に移動させる送り装置と、前記
帯板を前記内筒に密着させる圧下ロール群と前記帯板の
隣り合う端縁部の隙間を検知する隙間自動検知器とを有
する巻付け装置と、前記帯板を前記内筒へ向けて供給す
る帯板供給台を有する供給装置とからなる多層スパイラ
ル管製造装置において、前記帯板供給台を前記内筒の長
手方向に沿つて移動させる供給台移動手段と、前記帯板
供給台から供給される前記帯板の表面と対向し且つ前記
帯板をその板幅方向に温度勾配を持たせて加熱する加熱
装置とを設けたことを特徴とする多層スパイラル管製造
装置。A feeding device that rotates an inner cylinder around which a strip is spirally wound and moves the inner tube in its longitudinal direction, a group of rolling rolls that brings the strip into close contact with the inner tube, and adjacent edges of the strip. A multilayer spiral pipe manufacturing apparatus comprising: a winding device having an automatic gap detector for detecting a gap between the parts; and a feeding device having a strip supply stand that supplies the strip toward the inner cylinder. a supply table moving means for moving the plate supply table along the longitudinal direction of the inner cylinder; 1. A multilayer spiral tube manufacturing device, characterized in that it is equipped with a heating device that heats the tube by heating the tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24465984A JPS61123414A (en) | 1984-11-21 | 1984-11-21 | Apparatus for producing multi-layered spiral pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24465984A JPS61123414A (en) | 1984-11-21 | 1984-11-21 | Apparatus for producing multi-layered spiral pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61123414A true JPS61123414A (en) | 1986-06-11 |
Family
ID=17122037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24465984A Pending JPS61123414A (en) | 1984-11-21 | 1984-11-21 | Apparatus for producing multi-layered spiral pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61123414A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1232849A3 (en) * | 2001-02-19 | 2003-09-17 | Newell Operating Company | Apparatus and method for making variable paint roller covers |
KR100768407B1 (en) | 2007-03-09 | 2007-10-18 | 한국주철관공업(주) | Formming machine out let tables to manufacture extra long spiral steel pipe |
GB2564708A (en) * | 2017-07-21 | 2019-01-23 | Magma Global Ltd | Void volume measurement for a composite pipe |
GB2564709A (en) * | 2017-07-21 | 2019-01-23 | Magma Global Ltd | Composite tape tracking |
-
1984
- 1984-11-21 JP JP24465984A patent/JPS61123414A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1232849A3 (en) * | 2001-02-19 | 2003-09-17 | Newell Operating Company | Apparatus and method for making variable paint roller covers |
KR100768407B1 (en) | 2007-03-09 | 2007-10-18 | 한국주철관공업(주) | Formming machine out let tables to manufacture extra long spiral steel pipe |
GB2564708A (en) * | 2017-07-21 | 2019-01-23 | Magma Global Ltd | Void volume measurement for a composite pipe |
GB2564709A (en) * | 2017-07-21 | 2019-01-23 | Magma Global Ltd | Composite tape tracking |
WO2019016554A1 (en) * | 2017-07-21 | 2019-01-24 | Magma Global Limited | Method and apparatus for making a composite pipe |
WO2019016558A1 (en) * | 2017-07-21 | 2019-01-24 | Magma Global Limited | Void volume measurement for a composite pipe |
GB2564709B (en) * | 2017-07-21 | 2020-02-12 | Magma Global Ltd | Composite tape tracking |
GB2564708B (en) * | 2017-07-21 | 2020-02-12 | Magma Global Ltd | Void volume measurement for a composite pipe |
US11168513B2 (en) | 2017-07-21 | 2021-11-09 | Magma Global Limited | Method and apparatus for making a composite pipe |
US11498259B2 (en) | 2017-07-21 | 2022-11-15 | Magma Global Limited | Void volume measurement for a composite pipe |
AU2018303790B2 (en) * | 2017-07-21 | 2023-03-09 | Magma Global Limited | Method and apparatus for making a composite pipe |
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