JP4123671B2

JP4123671B2 - Protrusion metal strip manufacturing equipment

Info

Publication number: JP4123671B2
Application number: JP2000054402A
Authority: JP
Inventors: 謙一乾
Original assignee: Hitachi Cable Ltd
Current assignee: Hitachi Cable Ltd
Priority date: 2000-02-25
Filing date: 2000-02-25
Publication date: 2008-07-23
Anticipated expiration: 2020-02-25
Also published as: JP2001239344A

Description

【０００１】
【発明の属する技術分野】
本発明は、突起付金属条の製造装置に係り、特に、加工ローラを用いて複数本の突起付金属条を同時に製造する装置に関するものである。
【０００２】
【従来の技術】
空調機又は冷凍機などに用いられる伝熱管の中には、溶接により製造されるものがある。この場合、一般に、熱交換のための突起が片面に形成された銅板又はアルミニウム板などの金属条（突起付金属条）を、突起形成面を内側にしてシーム溶接することによって伝熱管を製造している。
【０００３】
この突起付金属条の製造方法としては、例えば、一対の加工ローラの周面に、その軸方向に沿って突起加工部と非加工部とを交互に形成すると共に、一方の加工ローラの突起加工部と他方の加工ローラの非加工部とが噛み合うように両加工ローラを対向させ、その加工ローラ間に金属条を通過させることによって、金属条の表・裏面に、交互に所定の幅の突起部を形成し、引き続いて、突起部の境界部をスリッターなどを用いてそれぞれ切断することによって、複数本の突起付金属条を同時に製造する方法が挙げられる（特開平４−３１９０１９号公報）。
【０００４】
しかし、この方法の場合、金属条に突起部を形成した後に、金属条を突起部の境界部で切断する方法であるため、突起部の境界部を切断する際に、金属条全体が幅方向にずれると、突起部の境界部でない部分で金属条が切断されてしまい、結果的に、突起付金属条の歩留りが低下してしまうという問題があった。
【０００５】
そこで、本発明者らは、以前に、突起付金属条の歩留りが良好な製造方法として、軸方向に沿って径の異なる突起加工部と非加工部とを交互に形成した一対の加工ローラを用いて、金属条を所定の幅で長手方向に連続的に切断した直後に、その加工ローラで切断された各金属条に対して突起部の形成を行うという方法を提案した（特願平１１−１４５１２０号）。
【０００６】
【発明が解決しようとする課題】
ところで、この製造方法において、加工ローラの軸方向長さを長くすると共に、突起加工部と非加工部の数を増やし、同時に多数の突起付金属条を製造しようとする場合（突起付金属条の加工（生産）効率を高めようとする場合）、軸方向における加工ローラの撓みのために突起付金属条の幅方向厚さが不均一になってしまうという問題があった。
【０００７】
この時、加工ローラに撓みが生じないように加工ローラの径を大きくすると、加工ローラと金属条との接触面積が増大し、ローラによる金属条の表面加工時間が長くなってしまうと共に、装置の大型化・重量化を招いてしまう。
【０００８】
そこで本発明は、上記課題を解決し、幅方向厚さが均一な突起付金属条を同時に多数条製造することが可能な突起付金属条の製造装置を提供することにある。
【０００９】
【課題を解決するための手段】
上記課題を解決するために請求項１の発明は、回転軸の周面に、その軸方向に沿って径の異なる小径の突起加工部と大径の非加工部とを交互に形成して一対の加工ローラを形成すると共に、一方の加工ローラの突起加工部と他方の加工ローラの非加工部および一方の加工ローラの非加工部と他方の加工ローラの突起加工部とが対向するよう、かつ、大径側の非加工部の端面同士が噛み合うように、両加工ローラを所定間隔を有して配置し、それら一対の加工ローラの鉛直方向上下に、上記非加工部の周面と摺動すると共に支持を行う周面が一定の径で形成された支持ローラをそれぞれ配置したものである。
【００１０】
かかる突起付金属条の製造装置によれば、一対の加工ローラの鉛直方向上下を支持ローラでそれぞれ押さえ込み、支持することで、加工ローラの軸方向の撓みを防ぐことができる。
【００１１】
【発明の実施の形態】
以下、本発明の好適一実施の形態を添付図面に基いて説明する。
【００１２】
まず、本発明の参考となる突起付金属条の製造装置の斜視図を図１に、図１におけるＡ方向矢視図を図２に、図２におけるＢ方向矢視図を図３に示す。
【００１３】
図１乃至図３に示すように、本発明の突起付金属条の製造装置は、回転軸（図１中では図示せず）１１ａ，１１ｂの周面に、その軸方向に沿って大径の突起加工部２と小径の非加工部３とを交互に形成して一対の加工ローラ１ａ，１ｂを形成すると共に、一方の加工ローラ１ａの突起加工部２と他方の加工ローラ１ｂの非加工部３および一方の加工ローラ１ａの非加工部３と他方の加工ローラ１ｂの突起加工部２とが対向するよう、かつ、大径の突起加工部２のエッジ（端面）６同士が噛み合うように、両加工ローラ１ａ，１ｂを所定間隔Ｓを有して配置し、それら一対の加工ローラ１ａ，１ｂの鉛直方向上下に、非加工部３の周面と摺動すると共に支持を行う支持ローラ２１ａ，２１ｂをそれぞれ配置したものである。
【００１４】
支持ローラ２１ａ，２１ｂは、回転軸３１ａ，３１ｂの周面に、軸方向に沿って凸部２３と凹部２４とを交互に形成してなるものであり、支持ローラ２１ａ，２１ｂの凸部２３の周面を、加工ローラ１ａ，１ｂの非加工部３の周面と当接させて配置している。
【００１５】
具体的には、支持ローラ２１ａ，２１ｂの凸部２３のエッジ２６と、加工ローラ１ａ，１ｂの突起加工部２のエッジ６とが噛み合わないように、支持ローラ２１ａ，２１ｂの凸部２３の軸方向長さを加工ローラ１ａ，１ｂの非加工部３の軸方向長さよりも短く形成する。その凸部２３を加工ローラ１ａ，１ｂの突起加工部２間に位置させ、かつ、凸部２３の周面と突起加工部２の周面とを当接させた状態で、加工ローラ１ａ，１ｂの鉛直方向上下に支持ローラ２１ａ，２１ｂをそれぞれ配置する。
【００１６】
また、上述のように配置された加工ローラ１ａ，１ｂと支持ローラ２１ａ，２１ｂとにおいて、凹部２４の周面と突起加工部２の周面とが当接しないように、支持ローラ２１ａ，２１ｂにおける凸部２３と凹部２４との段差Ｄ₂を、加工ローラ１ａ，１ｂにおける突起加工部２と非加工部３との段差Ｄ₁よりも大きく形成する。
【００１７】
突起加工部２の周面には、突起付金属条５ａ，５ｂの突起部７を形成するための溝１０が形成されている。
【００１８】
尚、図１，図２中の加工ローラ１ａ，１ｂでは、突起加工部２および非加工部３をそれぞれ２個しか図示していないが、軸方向に多数個有するものである。
【００１９】
次に、本発明の突起付金属条の製造装置の作用を説明する。
【００２０】
先ず、前述したように配置された突起付金属条の製造装置において、加工ローラ１ａ，１ｂ間の金属条導入側（図３中では左側）に、銅又は銅合金等からなる金属条４を導く。
【００２１】
加工ローラ１ａ，１ｂ間に導かれた金属条４は、加工ローラ１ａ，１ｂにおける大径の突起加工部２同士のエッジ６により、所定の幅に多数条、かつ、長手方向に連続的に切断され、多数本（図１、図２では４本）の各金属条４ａとなる。
【００２２】
その直後、各金属条４ａは、それぞれ、加工ローラ１ａ，１ｂの突起加工部２および非加工部３の周面と突起加工部２の側面とで案内されながら、一方の加工ローラ１ａの突起加工部２と他方の加工ローラ１ｂの非加工部３との間および一方の加工ローラ１ａの非加工部３と他方の加工ローラ１ｂの突起加工部２との間に導入され、各金属条４ａに対して溝ロール加工が施される。
【００２３】
溝ロール加工が、加工ローラ１ａの突起加工部２によりなされた金属条４ａはその表面（図３中では上面）に所定幅の突起部７が、また、加工ローラ１ｂの突起加工部２によりなされた金属条４ａはその裏面（図３中では下面）に所定幅の突起部７が形成され、溝ロール加工品としての突起付金属条５ａ，５ｂを得る。
【００２４】
ここで、金属条４の切断は、加工ローラ１ａ，１ｂにおける大径の突起加工部２同士のエッジ６によりなされるため、金属条４の切断装置（スリッターなど）を特に必要とせず、設備コストの低減を図ることができる。
【００２５】
また、各金属条４ａは、突起加工部２および非加工部３の周面と突起加工部２の側面とで案内された状態で加工ローラ１ａ，１ｂ間を通過するため、各金属条４ａに対して精度良く突起部７を形成することができ、突起付金属条５ａ，５ｂを歩留り良く製造することができる。
【００２６】
さらに、金属条４を各金属条４ａに切断した後、突起部７の形成を行っているため、金属条４を切断する際における加工ローラ１ａ，１ｂに対する金属条４の幅方向の多少のずれを許容することができる。
【００２７】
本発明によれば、加工ローラ１ａ，１ｂを、支持ローラ２１ａ，２１ｂによって鉛直方向上下から押さえ込み、支持することで、加工ローラ１ａ，１ｂが自重によって撓んだり、溝ロール加工時に反り返ったりするおそれがない。これによって、多数条の突起付金属条５を同時に製造する際に、各突起付金属条５の幅方向厚さが不均一になるおそれがない。
【００２８】
また、加工ローラ１ａ，１ｂに撓みが生じるおそれがないため、加工ローラ１ａ，１ｂの径は小さいままでよく、加工ローラ１ａ，１ｂと各金属条４ａとの接触面積が増大して、加工ローラ１ａ，１ｂによる各金属条４ａの表面加工時間が長くなるおそれはないと共に、装置の大型化・重量化を招くおそれもない。
【００２９】
さらに、支持ローラ２１ａ，２１ｂの凸部２３の軸方向長さを加工ローラ１ａ，１ｂの非加工部３の軸方向長さよりも短く形成し、かつ、支持ローラ２１ａ，２１ｂにおける凸部２３と凹部２４との段差Ｄ₂ を、加工ローラ１ａ，１ｂにおける突起加工部２と非加工部３との段差Ｄ₁ よりも大きく形成することで、前述した配置構造で支持ローラ２１ａ，２１ｂにより加工ローラ１ａ，１ｂを支持する際、加工ローラ１ａ，１ｂの突起加工部２が損傷するおそれはない。
【００３０】
また更に、突起加工部２の径を、非加工部３の径よりも大きくしているため、突起部７の形成に要する圧延力が小さくて済む。
【００３１】
次に、本発明の実施の形態を説明する。
【００３２】
本発明の実施の形態の突起付金属条の製造装置における金属条進行方向からの平面図を図４に示す。
【００３３】
本実施の形態の突起付金属条の製造装置は、図４に示すように、回転軸１１ａ，１１ｂの周面に、その軸方向に沿って小径の突起加工部２と大径の非加工部３とを交互に形成して一対の加工ローラ４１ａ，４１ｂを形成すると共に、一方の加工ローラ４１ａの突起加工部２と他方の加工ローラ４１ｂの非加工部３および一方の加工ローラ４１ａの非加工部３と他方の加工ローラ４１ｂの突起加工部２とが対向するよう、かつ、大径の非加工部３のエッジ（端面）４６同士が噛み合うように、両加工ローラ４１ａ，４１ｂを所定間隔Ｓを有して配置し、それら一対の加工ローラ４１ａ，４１ｂの鉛直方向上下に、非加工部３の周面と摺動すると共に支持を行う周面が一定の径で形成された支持ローラ５１ａ，５１ｂをそれぞれ配置したものである。
【００３４】
支持ローラ５１ａ，５１ｂは、その周面を、加工ローラ４１ａ，４１ｂの大径の非加工部３の周面と当接させて配置している。
【００３５】
また、加工ローラ４１ａ，４１ｂにおける突起加工部２の径を非加工部３の径よりも小さくし、大径の非加工部３と支持ローラ５１ａ，５１ｂとを当接させる配置構造であるため、支持ローラ５１ａ，５１ｂにより加工ローラ４１ａ，４１ｂを支持する際、支持ローラ５１ａ，５１ｂと突起加工部２とが接触するおそれは全くなく、突起加工部２が損傷することはない。
【００３６】
さらに、非加工部３の径を突起加工部２の径よりも大きくしているため、突起部７の形成に要する圧延力は本発明の場合よりも大きくなるものの、金属条４を切断してなる各金属条４ａの幅方向両端面にダレがなく、シャープな端面となる。
【００３７】
以上、本発明の実施の形態は、上述した実施の形態に限定されるものではなく、他にも種々のものが想定されることは言うまでもない。
【００３８】
【発明の効果】
以上要するに本発明によれば、一対の加工ローラの鉛直方向上下を支持ローラでそれぞれ押さえ込み、支持することで、加工ローラの軸方向の撓みを防ぐことができるという優れた効果を発揮する。
【図面の簡単な説明】
【図１】本発明の参考となる突起付金属条の製造装置の斜視図である。
【図２】図１のＡ方向矢視図である。
【図３】図２のＢ方向矢視図である。
【図４】本発明の実施の形態の突起付金属条の製造装置における金属条進行方向からの平面図である。
【符号の説明】
１ａ，１ｂ，４１ａ，４１ｂ加工ローラ
２突起加工部
３非加工部（加工ローラ）
４金属条
４ａ金属条
６，４６エッジ（大径側の突起加工部又は非加工部の端面）
１１ａ，１１ｂ回転軸（加工ローラ）
２１ａ，２１ｂ，５１ａ，５１ｂ支持ローラ
３１ａ，３１ｂ回転軸（支持ローラ）
２３凸部
Ｓ間隔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for manufacturing a metal strip with protrusions, and more particularly to an apparatus for simultaneously manufacturing a plurality of metal strips with protrusions using a processing roller.
[0002]
[Prior art]
Some heat transfer tubes used for air conditioners or refrigerators are manufactured by welding. In this case, in general, a heat transfer tube is manufactured by seam welding a metal strip (metal strip with projections) such as a copper plate or an aluminum plate having projections for heat exchange on one side, with the projection formation surface inside. ing.
[0003]
As a method for producing the metal strip with protrusions, for example, protrusion processing portions and non-processing portions are alternately formed along the axial direction on the peripheral surfaces of a pair of processing rollers, and the protrusion processing of one processing roller is performed. By projecting the metal strips between the processing rollers so that the non-machined portion of the other processing roller and the non-machined portion of the other processing roller are engaged with each other, protrusions with a predetermined width are alternately formed on the front and back surfaces of the metal strip. There is a method in which a plurality of metal strips with protrusions are simultaneously manufactured by forming a part and subsequently cutting each boundary part of the protrusion part using a slitter or the like (Japanese Patent Laid-Open No. 4-319191).
[0004]
However, in the case of this method, after the protrusion is formed on the metal strip, the metal strip is cut at the boundary between the protrusions. If it shift | deviates, metal strip will be cut | disconnected in the part which is not a boundary part of a projection part, and there existed a problem that the yield of a metal strip with a protrusion fell as a result.
[0005]
Therefore, the present inventors previously used a pair of processing rollers in which protrusion processing portions and non-processing portions having different diameters along the axial direction were alternately formed as a manufacturing method with good yield of the metal strip with protrusions. And proposed a method in which a protrusion is formed on each metal strip cut by the processing roller immediately after the metal strip is continuously cut in the longitudinal direction with a predetermined width (Japanese Patent Application No. 11). -145120).
[0006]
[Problems to be solved by the invention]
By the way, in this manufacturing method, when the axial length of the processing roller is increased, the number of protrusion processed parts and non-processed parts is increased, and at the same time, a large number of metal protrusions with protrusions are manufactured (of the metal protrusions with protrusions). There is a problem in that the thickness in the width direction of the metal strip with protrusions becomes non-uniform due to the bending of the processing roller in the axial direction.
[0007]
At this time, if the diameter of the processing roller is increased so that the processing roller does not bend, the contact area between the processing roller and the metal strip increases, and the surface processing time of the metal strip by the roller becomes long. This leads to an increase in size and weight.
[0008]
Then, this invention solves the said subject and is providing the manufacturing apparatus of the metal strip with a protrusion which can manufacture many metal strip with a protrusion with the uniform width direction thickness simultaneously.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is the one in which a small-diameter projection processing portion and a large-diameter non-processing portion having different diameters are formed alternately on the peripheral surface of the rotating shaft along the axial direction. And forming the processing roller of one processing roller, the non-processing portion of the other processing roller, the non-processing portion of one processing roller, and the protrusion processing portion of the other processing roller, and Both the processing rollers are arranged at a predetermined interval so that the end surfaces of the non-machining portion on the large diameter side are engaged with each other, and slide with the peripheral surface of the non-machining portion vertically above and below the pair of processing rollers. In addition , support rollers each having a peripheral surface with a constant diameter are arranged.
[0010]
According to such an apparatus for manufacturing a metal strip with protrusions, the vertical deflection of the pair of processing rollers is pressed and supported by the support rollers, respectively, so that bending of the processing rollers in the axial direction can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of the invention will be described with reference to the accompanying drawings.
[0012]
First, FIG. 1 is a perspective view of an apparatus for manufacturing a metal strip with protrusions which is a reference of the present invention, FIG. 2 is a view taken in the direction A in FIG. 1, and FIG. 3 is a view taken in the direction B in FIG.
[0013]
As shown in FIGS. 1 to 3, the apparatus for producing a metal strip with protrusions of the present invention has a large diameter along the axial direction on the peripheral surfaces of rotating shafts 11 a and 11 b (not shown in FIG. 1). The protrusion processing portion 2 and the small-diameter non-processing portion 3 are alternately formed to form a pair of processing rollers 1a and 1b, and the protrusion processing portion 2 of one processing roller 1a and the non-processing portion of the other processing roller 1b 3 and the non-processed portion 3 of one processing roller 1a and the projection processing portion 2 of the other processing roller 1b are opposed to each other, and the edges (end surfaces) 6 of the large-diameter projection processing portion 2 are engaged with each other. Both processing rollers 1a, 1b are arranged with a predetermined interval S, and support rollers 21a, which slide on and support the peripheral surface of the non-processing portion 3 above and below the pair of processing rollers 1a, 1b in the vertical direction. 21b is arranged respectively.
[0014]
Support rollers 21a, 21b are rotated shaft 31a, the peripheral surface of the 31b, are those obtained by forming the convex portions 2 3 and the recess 24 alternately along the axial direction, the support rollers 21a, 21b of the protrusion 23 Are arranged in contact with the peripheral surface of the non-processed portion 3 of the processing rollers 1a and 1b.
[0015]
Specifically, the axis of the convex portion 23 of the support rollers 21a and 21b is prevented so that the edge 26 of the convex portion 23 of the support rollers 21a and 21b does not mesh with the edge 6 of the projection processing portion 2 of the processing rollers 1a and 1b. The length in the direction is shorter than the length in the axial direction of the non-processed portion 3 of the processing rollers 1a and 1b. With the convex portion 23 positioned between the projection processing portions 2 of the processing rollers 1a and 1b and the peripheral surface of the convex portion 23 and the peripheral surface of the projection processing portion 2 in contact with each other, the processing rollers 1a and 1b Support rollers 21a and 21b are respectively arranged above and below in the vertical direction.
[0016]
Further, in the processing rollers 1a and 1b and the support rollers 21a and 21b arranged as described above, in the support rollers 21a and 21b, the peripheral surface of the recess 24 and the peripheral surface of the protrusion processing portion 2 are not in contact with each other. The step D ₂ between the convex portion 23 and the concave portion 24 is formed to be larger than the step D ₁ between the projection processing portion 2 and the non-processing portion 3 in the processing rollers 1a and 1b.
[0017]
Grooves 10 for forming the protrusions 7 of the metal strips with protrusions 5a and 5b are formed on the peripheral surface of the protrusion processing portion 2.
[0018]
The processing rollers 1a and 1b in FIGS. 1 and 2 show only two protrusion processing portions 2 and two non-processing portions 3, but have a large number in the axial direction.
[0019]
Next, the operation of the apparatus for producing a metal strip with protrusions of the present invention will be described.
[0020]
First, in the manufacturing apparatus of the metal strip with protrusions arranged as described above, the metal strip 4 made of copper or copper alloy is guided to the metal strip introduction side (the left side in FIG. 3) between the processing rollers 1a and 1b. .
[0021]
The metal strip 4 guided between the processing rollers 1a and 1b is continuously cut in the longitudinal direction in a large number of strips with a predetermined width by the edges 6 of the large-diameter projection processing portions 2 of the processing rollers 1a and 1b. Thus, a large number of metal strips 4a (four in FIGS. 1 and 2) are formed.
[0022]
Immediately thereafter, each metal strip 4a is guided by the peripheral surface of the projection processing part 2 and the non-processing part 3 of the processing rollers 1a and 1b and the side surface of the projection processing part 2, and the projection processing of one processing roller 1a. It is introduced between the portion 2 and the non-processed portion 3 of the other processing roller 1b and between the non-processed portion 3 of one processing roller 1a and the projection processing portion 2 of the other processing roller 1b, and is applied to each metal strip 4a. On the other hand, groove roll processing is performed.
[0023]
Groove roll processing is performed on the surface (upper surface in FIG. 3) of the metal strip 4a formed by the protrusion processing portion 2 of the processing roller 1a, and by the protrusion processing portion 2 of the processing roller 1b. The metal strip 4a is provided with a protrusion 7 having a predetermined width on the back surface (the lower surface in FIG. 3), thereby obtaining metal strips 5a and 5b with projections as grooved products.
[0024]
Here, since the cutting of the metal strip 4 is performed by the edge 6 between the large-diameter projection processing portions 2 of the processing rollers 1a and 1b, a cutting device (such as a slitter) for the metal strip 4 is not particularly required, and the equipment cost is reduced. Can be reduced.
[0025]
Moreover, since each metal strip 4a passes between the processing rollers 1a and 1b in a state guided by the peripheral surface of the projection processing portion 2 and the non-processing portion 3 and the side surface of the projection processing portion 2, each metal strip 4a On the other hand, the protruding portion 7 can be formed with high accuracy, and the protruding metal strips 5a and 5b can be manufactured with high yield.
[0026]
Furthermore, since the protrusion 7 is formed after the metal strip 4 is cut into the respective metal strips 4a, the metal strip 4 is slightly displaced in the width direction with respect to the processing rollers 1a and 1b when the metal strip 4 is cut. Can be tolerated.
[0027]
According to the present invention, since the processing rollers 1a and 1b are pressed and supported by the support rollers 21a and 21b from above and below in the vertical direction, the processing rollers 1a and 1b may be bent by their own weight or warped during groove roll processing. There is no. Accordingly, there is no possibility that the thickness in the width direction of each of the metal strips with protrusions 5 becomes uneven when a plurality of metal strips with protrusions 5 are manufactured at the same time.
[0028]
Further, since there is no possibility that the processing rollers 1a and 1b are bent, the diameters of the processing rollers 1a and 1b may be small, and the contact area between the processing rollers 1a and 1b and the metal strips 4a is increased, so that the processing rollers are increased. There is no possibility that the surface processing time of each metal strip 4a by 1a, 1b will be long, and there is no possibility that the apparatus will be increased in size and weight.
[0029]
Furthermore, the axial length of the convex portion 23 of the support rollers 21a and 21b is shorter than the axial length of the non-processed portion 3 of the processing rollers 1a and 1b, and the convex portion 23 and the concave portion of the support rollers 21a and 21b are formed. a step D ₂ and 24, the processing rollers 1a, is made larger than the level difference D ₁ of the the projection processing unit 2 and the non-processing section 3 in 1b, processing roller 1a by the support rollers 21a, 21b in the arrangement structure described above , 1b, there is no possibility that the projection processing part 2 of the processing rollers 1a, 1b is damaged.
[0030]
Furthermore, since the diameter of the protruding portion 2 is larger than the diameter of the non-processed portion 3, the rolling force required for forming the protruding portion 7 can be reduced.
[0031]
Next, the implementation of the embodiment of the present invention.
[0032]
The top view from the metal strip advancing direction in the manufacturing apparatus of the metal strip with a protrusion of embodiment of this invention is shown in FIG.
[0033]
As shown in FIG. 4, the manufacturing apparatus of the metal strip with protrusions of the present embodiment has a small-diameter protrusion processing portion 2 and a large-diameter non-processing portion on the peripheral surfaces of the rotating shafts 11a and 11b along the axial direction. 3 are alternately formed to form a pair of processing rollers 41a and 41b, and the protrusion processing portion 2 of one processing roller 41a, the non-processing portion 3 of the other processing roller 41b, and the non-processing of one processing roller 41a The two processing rollers 41a and 41b are separated by a predetermined distance S so that the portion 3 and the projection processing portion 2 of the other processing roller 41b face each other and the edges (end surfaces) 46 of the large-diameter non-processing portion 3 are engaged with each other. And supporting rollers 51a, 51a and 41b, each of which has a fixed diameter on the upper and lower sides of the pair of processing rollers 41a and 41b. 51b are arranged respectively. .
[0034]
Support rollers 51a, 51b is the circumferential surface of that, the processing rollers 41a, are arranged by contact with the peripheral surface of the non-processed portion 3 of larger diameter 41b.
[0035]
Further, the processing rollers 41a, and smaller than the diameter of the non-processed portion 3 a diameter of the projection processing unit 2 in 41b, the non-working portion 3 and the support roller 51a having a large diameter, for a 51b is arrangement to abut, When the processing rollers 41a and 41b are supported by the support rollers 51a and 51b , there is no possibility that the support rollers 51a and 51b come into contact with the projection processing portion 2, and the projection processing portion 2 is not damaged.
[0036]
Furthermore, since the diameter of the non-processed portion 3 is larger than the diameter of the projection processing portion 2, the rolling force required for forming the projection 7 is larger than that in the case of the present invention. There is no sagging on both end surfaces in the width direction of each metal strip 4a, and the end surfaces are sharp end surfaces.
[0037]
As mentioned above, it cannot be overemphasized that embodiment of this invention is not limited to embodiment mentioned above, and various things are assumed in addition.
[0038]
【The invention's effect】
In short, according to the present invention, by pressing and supporting the upper and lower parts of the pair of processing rollers in the vertical direction with the support rollers, the excellent effect that the bending of the processing rollers in the axial direction can be prevented is exhibited.
[Brief description of the drawings]
FIG. 1 is a perspective view of an apparatus for manufacturing a metal strip with protrusions, which is a reference of the present invention.
FIG. 2 is a view taken in the direction of arrow A in FIG.
FIG. 3 is a view in the direction of arrow B in FIG.
FIG. 4 is a plan view from the metal strip traveling direction in the protruding metal strip manufacturing apparatus according to the embodiment of the present invention .
[Explanation of symbols]
1a, 1b, 41a, 41b Processing roller 2 Protrusion processing portion 3 Non-processing portion (processing roller)
4 Metal strip 4a Metal strip 6, 46 Edge (end face of the large diameter protrusion processing part or non-processing part)
11a, 11b Rotating shaft (processing roller)
21a, 21b, 51a, 51b Support roller 31a, 31b Rotating shaft (support roller)
23 convex part S interval

Claims

On the peripheral surface of the rotating shaft, a pair of processing rollers are formed by alternately forming small-diameter protrusion processing portions and large-diameter non-processing portions having different diameters along the axial direction, and the protrusions of one processing roller The processing portion and the non-processing portion of the other processing roller, the non-processing portion of one processing roller, and the projection processing portion of the other processing roller are opposed to each other, and the end surfaces of the non-processing portion on the large-diameter side are engaged with each other. In addition, both processing rollers are arranged with a predetermined interval, and a peripheral surface that slides and supports the peripheral surface of the non-processed portion is formed with a constant diameter above and below the pair of processing rollers in the vertical direction. An apparatus for producing a metal strip with protrusions, wherein the support rollers are arranged.