JPH0732970B2 - Method for producing short metal fibers - Google Patents
Method for producing short metal fibersInfo
- Publication number
- JPH0732970B2 JPH0732970B2 JP62003025A JP302587A JPH0732970B2 JP H0732970 B2 JPH0732970 B2 JP H0732970B2 JP 62003025 A JP62003025 A JP 62003025A JP 302587 A JP302587 A JP 302587A JP H0732970 B2 JPH0732970 B2 JP H0732970B2
- Authority
- JP
- Japan
- Prior art keywords
- sheared
- strip
- short metal
- upper blade
- producing
- 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.)
- Expired - Lifetime
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- Accessories And Tools For Shearing Machines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、コンクリート建造物の引っ張り強度及び曲げ
強度を向上させるために、コンクリートに埋入される金
属短繊維の製造方法に関するものである。TECHNICAL FIELD The present invention relates to a method for producing short metal fibers embedded in concrete in order to improve the tensile strength and bending strength of a concrete structure.
土建建築材料としてのコンクリートは、安価で多くの長
所を有する反面、脆くてひび割れを起こし易いという宿
命的な欠点を有している。そこで、コンクリートに金属
短繊維を容積百分率で１％〜２％程度埋入させることに
より、コンクリート建造物の引っ張り強度及び曲げ強度
を向上させるという方法が一般に採用されている。Concrete, which is an earth building material, is inexpensive and has many advantages, but has a fatal drawback that it is brittle and easily cracks. Therefore, a method is generally adopted in which the tensile strength and bending strength of a concrete building are improved by embedding metal short fibers in the concrete in a volume percentage of about 1% to 2%.
上記の金属短繊維は、通常、φ0.5mm×30mm程度の線材
状を成し、その製造方法としては、従来より下記の方法
が知られている。The above-mentioned short metal fibers usually form a wire rod having a diameter of about 0.5 mm × 30 mm, and the following method has been conventionally known as a manufacturing method thereof.
（１）薄板のコイル材を製品長さの幅にスリットし、シ
リットした材料を順送して固定刃と回転刃により切断す
る方法（特公昭55-16768号公報、及び特公昭53-12278号
公報）。(1) A method in which a thin coil material is slit into a width corresponding to the product length, and the silited material is sequentially fed and cut by a fixed blade and a rotary blade (Japanese Patent Publication No. 55-16768 and Japanese Patent Publication No. 53-12278). Gazette).
（２）鋼線をダイスにて伸線し、所定の製品径にした
後、固定刃と回転刃により製品寸法に切断する方法。(2) A method in which a steel wire is drawn with a die to have a predetermined product diameter and then cut into product dimensions with a fixed blade and a rotary blade.
（３）材料の溶湯中に、外周に製品形状に対応した多数
の凹部を有する冷却ディスクを浸し、この冷却ディスク
を回転させることにより、上記の凹部にて溶湯をかき上
げ、かつ撥ね飛ばして製品を製造する方法。(3) A cooling disk having a large number of recesses corresponding to the shape of the product is immersed in the molten material of the material, and the cooling disk is rotated to scrape up the molten metal in the recesses and repel the product. A method of manufacturing.
（４）厚板のスラブを一定方向に搬送し、このスラブの
搬送方向と対向する方向に回転する回転刃により、上記
スラブを順次切削し、この切削により得られた切削片を
製品とする方法。(4) A method in which a slab of a thick plate is conveyed in a fixed direction, the slab is sequentially cut by a rotary blade that rotates in a direction opposite to the conveying direction of the slab, and a cutting piece obtained by this cutting is used as a product. .
（５）多数の薄板を重ねて固定し、重ねた薄板の端部に
回転刃を当接させて薄板を切削し、製品を得る方法。(5) A method in which a large number of thin plates are stacked and fixed, and a rotary blade is brought into contact with the end of the stacked thin plates to cut the thin plates to obtain a product.
上記の他に、本願出願人は、スチールファイバーの製造
方法（特願昭61-213465号）を先に提案している。この
方法は、 （６）連続的に順送される帯鋼を、下刃と、刃面が帯鋼
の幅方向に波形に形成された上刃とにより、順次、波形
線材に切断した後、この波形線材を、所望の製品長さに
切断する方法である。In addition to the above, the applicant of the present application has previously proposed a method for producing a steel fiber (Japanese Patent Application No. 61-213465). This method is as follows: (6) After sequentially cutting the continuously fed strip steel into a corrugated wire rod by a lower blade and an upper blade whose blade surface is formed in a wavy shape in the width direction of the strip steel, This is a method of cutting this corrugated wire rod to a desired product length.
ところが、上記の各方法では、各々下記の欠点を有して
いる。即ち、 （１）の方法では、コイル材を製品長さの幅に切断する
スリット工程、及びスリットした材料を巻き直す巻直し
工程が必要であり、生産性に劣る。However, each of the above methods has the following drawbacks. That is, the method (1) requires a slitting step of cutting the coil material into the width of the product length and a rewinding step of rewinding the slitted material, resulting in poor productivity.
（２）の方法では、鋼線を伸線するために約３回の伸線
工程が必要であると共に、この伸線工程の前に鋼線の焼
鈍工程が必要である。また、材料費が高くコストアップ
となる。さらに、伸線機とのオンライン処理が困難であ
る。In the method (2), a wire drawing process is required about three times to draw the steel wire, and an annealing process of the steel wire is necessary before the wire drawing process. In addition, the material cost is high and the cost is increased. Furthermore, online processing with a wire drawing machine is difficult.
（３）の方法では、溶湯のかき上げ・撥ね飛ばしによ
り、製品を得るものであるため、所定の製品形状を得難
く、成型性に問題がある。また、冷却ディスク及び耐火
物の寿命が短い。In the method (3), since the product is obtained by scraping and splashing the molten metal, it is difficult to obtain a predetermined product shape, and there is a problem in moldability. Also, the life of the cooling disk and refractory is short.
（４）の方法では、切削により製造するものであるた
め、工具寿命が短く、形状コントロールが困難であると
共に、加工性が低い。従って生産性が低い。Since the method (4) is manufactured by cutting, the tool life is short, shape control is difficult, and workability is low. Therefore, productivity is low.
（５）の方法では、上記（４）の方法と同様に、工具寿
命が短く、形状コントロールが困難であると共に、加工
性が低い。また、薄板のクランプが必要である一方、ビ
ビリ振動が生じ、製品切り出しの困難な状態を引き起こ
し易い。さらに、高出力のスライス盤が必要である。In the method (5), as in the method (4), the tool life is short, shape control is difficult, and the workability is low. Further, while thin plate clamping is required, chatter vibrations occur, and it is easy to cause a difficult state of product cutting. In addition, a high output slicer is required.
（６）の方法にあっては、上記（１）〜（５）の方法に
おける問題点を充分に解決し得るものの、帯鋼を切断し
て得た波形線材は散在状態となっているので、この波形
線材を切断して金属短繊維を得るための切断作業が煩雑
となる。そこで、波形線材を整列した後に切断すること
も考えられるが、これでは装置が複雑化することによ
り、さらに改良を加える必要がある。In the method (6), although the problems in the methods (1) to (5) can be sufficiently solved, since the corrugated wire rod obtained by cutting the strip steel is in a scattered state, The cutting work for cutting the corrugated wire to obtain the short metal fibers becomes complicated. Therefore, it is conceivable that the corrugated wire rods are aligned and then cut, but this complicates the device, and further improvement is required.
本第１発明の金属短繊維の製造方法は、上記の問題点を
解決するために、連続的に順送される帯板の幅方向の一
部を残して、下刃と、刃面が帯板の幅方向に波形に形成
された上刃とにより帯板を剪断し、剪断部と非剪断部と
から成る波形板材を作製した後、剪断部同士が非剪断部
で連結された状態で上記剪断部を所望の製品長さに剪断
して金属短繊維を得ることを特徴としている。In order to solve the above problems, the method for producing a short metal fiber of the first aspect of the present invention is such that the lower blade and the blade surface are stripped, leaving a part in the width direction of the strip that is continuously fed. After shearing the strip with the upper blade formed in a corrugated shape in the width direction of the plate, to produce a corrugated plate material consisting of a sheared portion and a non-sheared portion, the sheared portions are connected with each other in the non-sheared portion. The shearing portion is sheared to a desired product length to obtain a short metal fiber.
本第２発明の金属短繊維の製造方法は、連続的に順送さ
れる帯板の幅方向の一部を残して、下刃と、刃面が帯板
の幅方向に波形に形成された上刃とにより帯板を剪断
し、剪断部と非剪断部とから成る波形板材を作製した
後、上記剪断部を水溶性の接着剤で固定し、次に剪断部
を所望の製品長さに切断して金属短繊維を得ることを特
徴としている。In the method for producing short metal fibers of the second aspect of the present invention, the lower blade and the blade surface are formed in a wavy shape in the width direction of the strip, leaving a part in the width direction of the strip that is continuously fed. After shearing the strip with an upper blade to produce a corrugated plate material consisting of a sheared portion and a non-sheared portion, the sheared portion is fixed with a water-soluble adhesive, and then the sheared portion is cut to a desired product length. It is characterized by cutting to obtain short metal fibers.
上記第１発明の方法により、波形板材には剪断部同士を
連結する非剪断部が形成されているので、剪断された各
剪断部が散在せず、波形板材を容易に切断することがで
きる。これにより、波形板材の切断作業が容易となると
共に、少ない工程数にて効率良く金属短繊維を得ること
ができる。この結果、金属短繊維の生産性を向上するこ
とができると共に、コストダウンを行うことができる。
また、波形板材の切断時に使用される切断装置の寿命を
長く保つことができ、さらに、金属短繊維を設計通りの
形状に形成する高い成型性を得ることができる。By the method of the first aspect of the present invention, since the non-shearing portions that connect the shearing portions to each other are formed in the corrugated sheet material, the sheared sheared portions are not scattered, and the corrugated sheet material can be easily cut. As a result, the work of cutting the corrugated plate material is facilitated and the short metal fibers can be efficiently obtained in a small number of steps. As a result, the productivity of the short metal fibers can be improved and the cost can be reduced.
Further, the life of the cutting device used when cutting the corrugated plate material can be maintained for a long time, and further, high moldability for forming the short metal fibers into a shape as designed can be obtained.
上記第２発明の方法により、波形板材の各剪断部は、非
剪断部で連結されると共に、各々隣接した剪断部と貼着
されている。従って、波形板材の切断作業が第１発明の
方法に比べて一層容易となる。さらに、上記波形板材の
切断して得られる金属短繊維は、上記接着剤により数本
毎に纏まっているので、かかる金属短繊維をコンクリー
トへ混入させるときの作業性が向上する。加えて、上記
金属短繊維は、コンクリート内において数本毎に纏まっ
た状態で分散した後、上記接着剤が溶解されて互いに離
散するので、コンクリート内における散在の均一性も向
上する。よって、コンクリート建造物の引っ張強度及び
曲げ強度をより一層向上させることができる。According to the method of the second invention, the sheared portions of the corrugated plate material are connected by the non-sheared portions and are also attached to the adjacent sheared portions. Therefore, the work of cutting the corrugated plate material becomes easier than the method of the first aspect of the invention. Furthermore, since the short metal fibers obtained by cutting the corrugated plate material are grouped together by the adhesive, the workability when mixing the short metal fibers into concrete is improved. In addition, since the short metal fibers are dispersed in the concrete in a state where they are collected every several fibers, the adhesive is dissolved and separated from each other, so that the uniformity of dispersion in the concrete is also improved. Therefore, the tensile strength and bending strength of the concrete structure can be further improved.
〔第１発明の実施例〕 本第１発明の一実施例を第１図乃至第８図に基づいて以
下に説明する。[Embodiment of the First Invention] An embodiment of the first invention will be described below with reference to FIGS. 1 to 8.
本第１発明の製造方法に供される金属短繊維の製造装置
には、第６図に示すように、帯板３が巻回されたアンコ
イラー６と、円柱上のロール7a及び外周に凸部が形成さ
れた段付けロール7bから成る段付け装置７と、図示しな
いプレスに配設された上刃１と下刃２とから成る剪断装
置８と、一対の切断ロール9a・9aから成る切断装置９
と、切断装置８により作製された後述の波形板材15の非
剪断部15b・15bを巻き取る巻取ロール10・10とが帯板３
の順送方向にこの順に設けられている。また、本装置に
は、上記剪断装置８の剪断動作と同期して帯板３を順送
する、図示しない順送装置が設けられている。As shown in FIG. 6, an uncoiler 6 around which a strip 3 is wound, a cylindrical roll 7a, and a convex portion on the outer circumference are provided in a device for producing a short metal fiber used in the production method of the present first invention. A stepping device 7 including a stepping roll 7b formed with a groove, a shearing device 8 including an upper blade 1 and a lower blade 2 arranged on a press (not shown), and a cutting device including a pair of cutting rolls 9a and 9a. 9
And the winding roll 10.10 for winding up the non-shearing portions 15b, 15b of the corrugated plate material 15 described later, which is produced by the cutting device 8.
Are provided in this order in the progressive direction. Further, the present apparatus is provided with a not-shown progressive feeding device that progressively feeds the strip 3 in synchronization with the shearing operation of the shearing device 8.
上記剪断装置８は、第１図に示すように、上刃１が下方
に移動して、下刃２とにより、金属短繊維16…の材料で
ある帯板３を波形線状に剪断するものであり、上刃１の
幅は、帯板３の幅より数mm〜20程度短くなるように構成
されている。また、上刃１は、実際には、その先端部が
若干帯板３の順送方向を向くように傾斜され、かつ下方
に移動したときに、下刃２と所定の間隙をおいて帯板３
の順送方向側に位置するように取り付けられている。さ
らに、上刃１における下面の刃面は、傾斜部４…と水平
部５…とを交互に有する波形を成しており、傾斜部４…
は、水平面に対して角度θを成し、水平部５を介して上
下方向に交互に形成されている。上刃１の波形面におけ
る谷部から山部までの長さは製品長さに対応している。
また、上刃１が水平部５を有することにより、帯板３か
ら後述の波形板材15を形成する際に、波形板材15は上記
水平部５相当部位にて切断されるのが防止されている。
尚、上刃１の刃面は、上述の形状に限定されることな
く、例えば第２図に示すように、水平部５…がＲ状部11
…となった波形状であってもよい。As shown in FIG. 1, the shearing device 8 is one in which the upper blade 1 moves downward and the lower blade 2 shears the strip 3 which is the material of the metallic short fibers 16 into a corrugated line shape. The width of the upper blade 1 is configured to be shorter than the width of the strip 3 by several mm to 20. In addition, the upper blade 1 is actually inclined such that its tip portion is slightly oriented in the forward direction of the strip plate 3, and when it is moved downward, the upper blade 1 and the lower blade 2 are spaced apart from each other by a predetermined gap. Three
It is attached so as to be located on the progressive direction side. Further, the blade surface of the lower surface of the upper blade 1 has a corrugated shape having alternating inclined portions 4 ... And horizontal portions 5.
Form an angle θ with respect to the horizontal plane and are alternately formed in the vertical direction via the horizontal portions 5. The length from the valley to the peak on the corrugated surface of the upper blade 1 corresponds to the product length.
Further, since the upper blade 1 has the horizontal portion 5, the corrugated plate material 15 is prevented from being cut at a portion corresponding to the horizontal portion 5 when the corrugated plate material 15 described later is formed from the strip plate 3. .
The blade surface of the upper blade 1 is not limited to the above-described shape, and for example, as shown in FIG.
It may have a wavy shape.
一方、下刃２は上面の刃面が平坦面となっており、水平
に設けられている。この下刃２の刃面も同様に平坦面に
限定されるものではなく、例えば円弧状に形成されたも
のであってもよい。前記剪断装置９の両切断ロール9a・
9aの周面には、上刃１の波形面における谷部から山部ま
での長さと略一致するような間隔をおいて、鍔状の切断
刃が形成されている。また、前記段付け装置７は、帯板
３の表面に段付けを行うものであり、最終製品となる金
属短繊維16の表面積を拡大して、コンクリートと金属短
繊維16…との密着性と係合性とを向上させるようになっ
ている。On the other hand, the lower blade 2 has a flat upper surface, and is provided horizontally. The blade surface of the lower blade 2 is not limited to the flat surface as well, and may be formed in an arc shape, for example. Both cutting rolls 9a of the shearing device 9
A collar-shaped cutting blade is formed on the circumferential surface of 9a at intervals such that the length from the valley portion to the mountain portion of the corrugated surface of the upper blade 1 substantially matches. Further, the stepping device 7 steps the surface of the strip 3 and expands the surface area of the metal short fibers 16 as the final product to improve the adhesion between the concrete and the metal short fibers 16. It is designed to improve the engaging property.
ところで、帯板３を製品幅の線材状に剪断するには、上
記の方法の他、シャーによる剪断が考えられる。しかし
ながら、この方法によると、シャーの上刃における剪断
面は、水平方向に対して所定の傾斜角を有し、上刃の両
端では、下刃からの高さが異なるため、１回の剪断に時
間がかかる。また、シャーでは、帯板３を、製品幅とし
て通常求められる0.5mm程度の幅に剪断するのは略不可
能であり、たとえ剪断できたとしても、剪断された材料
にねじれ等の変形が生じ、使用不能になる。また、上刃
が熱変形される、或いは、シャー自体にガタを生じる等
の不都合も生じる。従って、このような方法は、実現不
可能なものである。By the way, in order to shear the strip 3 into a wire having a product width, shearing by a shear can be considered in addition to the above method. However, according to this method, the shear surface of the upper blade of the shear has a predetermined inclination angle with respect to the horizontal direction, and the height from the lower blade is different at both ends of the upper blade, so that the shearing is performed once. take time. Further, in a shear, it is almost impossible to shear the strip plate 3 into a width of about 0.5 mm which is usually required as a product width. Even if shearing is possible, the sheared material is deformed such as twisted. , Disabled. In addition, the upper blade is thermally deformed, or the shear itself is loosened. Therefore, such a method is not feasible.
次に、上記製造装置による金属短繊維の製造方法を以下
に示す。Next, a method for producing short metal fibers by the above production apparatus will be described below.
先ず、プレスとこのプレスに同期した順送装置とを作動
させ、段付けロール7bによって表面に凹凸部が形成され
た帯板３を下刃２上に送り出すと共に、上刃１を帯板３
上に降下させる。この際、上刃１は、その幅が帯板３の
幅より数mm〜20mm程度短くなるように構成されているの
で、帯板３の両端部近傍には、第３図に示すように、非
剪断部15b・15bが形成される。一方、帯板３の中央部に
は、第４図に示すように、上刃１下面の傾斜部４…に対
応する板材傾斜部13…と、水平部５…に対応する板材水
平部14…とが形成される。これら板材傾斜部13…と板材
水平部14…とにより波形板材15の剪断部15a…が構成さ
れ、この剪断部15a…と上記非剪断部15b・15bとにより
波形板材15が構成される。その後、切断装置９の切断刃
により、波形板材15の剪断部15a…を、その谷部及び山
部で切断し、第５図に示す金属短繊維16…を作製する。
また、波形板材15の非剪断部15b・15bは、巻取ロール10
・10で巻き取る。First, the press and the progressive device synchronized with this press are operated to send out the strip plate 3 having the irregularities on the surface by the stepping roll 7b onto the lower blade 2 and the upper blade 1 to the strip plate 3
Drop it up. At this time, the upper blade 1 is configured so that its width is shorter than the width of the strip plate 3 by about several mm to 20 mm, and therefore, in the vicinity of both end portions of the strip plate 3, as shown in FIG. The non-shear portions 15b and 15b are formed. On the other hand, in the central portion of the strip plate 3, as shown in FIG. 4, a plate material inclined portion 13 corresponding to the inclined portion 4 of the lower surface of the upper blade 1 and a plate material horizontal portion 14 corresponding to the horizontal portion 5 ... And are formed. These plate material inclined portions 13 ... And plate material horizontal portions 14 ... Configure shearing portions 15a of the corrugated plate material 15. The shearing portions 15a ... And the non-shearing portions 15b and 15b constitute the corrugated plate material 15. After that, the shearing portions 15a of the corrugated plate material 15 are cut at the valleys and peaks by the cutting blade of the cutting device 9 to produce the short metal fibers 16 shown in FIG.
In addition, the non-shearing portions 15b and 15b of the corrugated plate material 15 are the winding rolls 10
・ Take in 10.
このように、波形板材15には剪断部15a同士を連結する
非剪断部15b・15bが形成されているので、剪断された各
剪断部15a…が散在せず、波形板材15を容易に切断する
ことができる。これにより、波形板材15の切断作業が容
易となると共に、少ない工程数にて効率良く金属短繊維
16…を得ることができる。この結果、金属短繊維16…の
生産性を向上することができると共に、コストダウンを
行うことができる。また、切断装置９の寿命を長く保つ
ことができ、さらに、金属短繊維16…を設計通りの形状
に形成する高い成型性を得ることができる。In this way, since the non-sheared portions 15b and 15b that connect the sheared portions 15a to each other are formed in the corrugated plate material 15, the sheared sheared portions 15a are not scattered and the corrugated plate material 15 is easily cut. be able to. This facilitates the cutting work of the corrugated plate material 15 and efficiently produces short metal fibers with a small number of steps.
You can get 16 ... As a result, the productivity of the short metal fibers 16 can be improved and the cost can be reduced. Further, the life of the cutting device 9 can be maintained for a long time, and further, high moldability for forming the short metal fibers 16 ... In a shape as designed can be obtained.
尚、帯板３の幅方向の一部を残す方法としては、上記実
施例のような方法に限定されるものではなく、例えば、
第７図に示すように、上刃１の中間部を部分的に数mm程
度削除して切欠部1aを形成してもよい。加えて、第８図
に示すように、上刃１の中間部に切欠部1aを形成すると
共に、帯板３をその幅方向に蛇行させるか、或いは、上
刃１を帯板３の幅方向に往復移動させて、非剪断部15b
を幅方向に変化させるように形成すれば、剪断部15a…
の纏まりが一層良くなり効果的である。The method of leaving a part of the strip plate 3 in the width direction is not limited to the method of the above embodiment, and for example,
As shown in FIG. 7, the notch 1a may be formed by partially removing the intermediate portion of the upper blade 1 by several mm. In addition, as shown in FIG. 8, a notch 1a is formed in the middle portion of the upper blade 1 and the strip 3 is meandered in the width direction, or the upper blade 1 is formed in the width direction of the strip 3. Back and forth to the non-shearing part 15b
If it is formed so as to change in the width direction, the shearing portion 15a ...
It is effective because the grouping of the items becomes even better.
また、本実施例では、帯板３への段付けを、帯板３の切
断前に行う構成としているが、これに限定されることな
く、波形板材15形成後、或いは金属短繊維16…形成後に
段付けを行うものであってもよい。Further, in the present embodiment, the step of forming the band plate 3 is performed before cutting the band plate 3, but the present invention is not limited to this, and after forming the corrugated plate material 15 or forming the metal short fibers 16 ... The step may be performed later.
さらに、上刃１の波形面における谷部から山部までの長
さ、即ち1/2の波長分を製品長さに対応させているが、
これに限定されることなく、製品長さを、１波長分、２
波長分、或いは1/4波長分等、任意に設定することが可
能であり、この製品長さに応じて波形板材15を切断し、
金属短繊維16…を得るものであってもよい。Furthermore, the length from the valley to the peak on the corrugated surface of the upper blade 1, that is, a half wavelength, corresponds to the product length.
Without being limited to this, the product length can be set to 1 wavelength, 2
It can be set arbitrarily for the wavelength, or for 1/4 wavelength, and the corrugated plate material 15 is cut according to the product length,
The metal short fibers 16 may be obtained.
〔第２発明の実施例〕 本第２発明の一実施例を、以下に説明する。尚、第１発
明の実施例と同一の工程についてその説明を省略する。[Embodiment of the Second Invention] An embodiment of the second invention will be described below. The description of the same steps as those of the first embodiment will be omitted.
剪断装置８により帯板３を波形板状に剪断して波形板材
15を作製した後、水溶性の接着剤で上記波形板材15の剪
断部15a同士を貼着する。しかる後、波形板材15を切断
装置９で所望の製品長さとなるように切断する。The corrugated plate material is sheared into a corrugated plate shape by the shearing device 8.
After producing 15, the sheared portions 15a of the corrugated plate member 15 are attached to each other with a water-soluble adhesive. Thereafter, the corrugated plate material 15 is cut by the cutting device 9 so as to have a desired product length.
このように、波形板材15の切断時には、波形板材15の各
剪断部15a…は、非剪断部15b・15bで連結されると共
に、各々隣接した剪断部15a・15aと貼着されている。従
って、波形板材15の切断作業が一層容易となる。さら
に、上記波形板材15を切断して得られる金属短繊維16…
は、上記接着剤により数本毎に纏まっているので、かか
る金属短繊維16…をコンクリートへ混入させるときの作
業性が向上する。加えて、上記金属短繊維16…は、コン
クリート内において数本毎に纏まった状態で分散した
後、上記接着剤が溶解されて互いに離散するので、コン
クリート内における散在の均一性も向上する。よって、
コンクリート建造物の引っ張り強度及び曲げ強度をより
一層向上させることができる。As described above, when the corrugated plate material 15 is cut, the sheared portions 15a ... Of the corrugated plate material 15 are connected by the non-sheared portions 15b and 15b, and are also bonded to the adjacent sheared portions 15a and 15a. Therefore, the cutting work of the corrugated plate member 15 becomes easier. Further, short metal fibers 16 obtained by cutting the corrugated plate material 15 ...
Are grouped by the above adhesive for every several fibers, the workability when mixing such short metal fibers 16 into concrete is improved. In addition, since the short metal fibers 16 are dispersed in the concrete in a state where they are collected every several fibers, the adhesive is dissolved and dispersed into each other, so that the uniformity of dispersion in the concrete is also improved. Therefore,
It is possible to further improve the tensile strength and bending strength of the concrete structure.
本第１発明に係る金属短繊維の製造方法は、以上のよう
に、連続的に順送される帯板の幅方向の一部を残して、
下刃と、刃面が帯板の幅方向に波形に形成された上刃と
により帯板を剪断して、剪断部と非剪断部とから成る波
形板材を作製した後、剪断部同士が非剪断部で連結され
た状態で上記剪断部を所望の製品長さに切断して金属短
繊維を得る方法である。従って、従来の方法では必要な
帯板のスリット工程及び巻直し工程等が不要となると共
に、波形板材には剪断部同士を連結する非剪断部が形成
されているので、剪断された各剪断部が散在せず、波形
板材を容易に切断することができる。As described above, the method for producing a short metal fiber according to the first aspect of the present invention leaves a part in the width direction of the strip that is sequentially fed,
The lower blade and the upper blade whose blade surface is corrugated in the width direction of the strip are sheared from the strip to produce a corrugated plate material including a sheared portion and a non-sheared portion, and the sheared portions are not This is a method of obtaining short metal fibers by cutting the above-mentioned shearing portion into a desired product length in a state of being connected by the shearing portion. Therefore, in the conventional method, the necessary slitting process and rewinding process of the strip are unnecessary, and since the corrugated plate member is formed with the non-shearing part connecting the shearing parts, each sheared shearing part is formed. It is possible to easily cut the corrugated plate material without scattering.
これにより、波形板材の切断作業が容易となると共に、
少ない工程数にて効率良く金属短繊維を得ることができ
る。この結果、金属短繊維の生産性を向上することがで
きると共に、コストダウンを行うことができる。また、
波形板材の切断時に使用される切断装置の寿命を長く保
つことができ、さらに、金属短繊維を設計通りの形状に
形成する高い成型性を得ることができる等の効果を奏し
得る。This facilitates the cutting work of the corrugated plate material,
It is possible to efficiently obtain short metal fibers with a small number of steps. As a result, the productivity of the short metal fibers can be improved and the cost can be reduced. Also,
The cutting device used for cutting the corrugated plate material can have a long service life, and further, high moldability for forming the short metal fibers into a shape as designed can be obtained.
本第２発明に係る金属短繊維の製造方法は、以上のよう
に、連続的に順送される帯板の幅方向の一部を残して、
下刃と、刃面が帯板の幅方向に波形に形成された上刃と
により帯板を剪断し、剪断部と非剪断部とから成る波形
板材を作製した後、上記剪断部を水溶性の接着剤で固定
し、次に剪断部を所望の製品長さの切断して金属短繊維
を得る構成である。As described above, the method for producing a short metal fiber according to the second aspect of the present invention leaves a part in the width direction of the strip that is continuously fed,
The lower blade and the upper blade whose blade surface is corrugated in the width direction of the strip are sheared to form a corrugated plate material comprising a sheared portion and a non-sheared portion, and the sheared portion is water-soluble. The adhesive is fixed with an adhesive and then the sheared portion is cut into a desired product length to obtain a short metal fiber.
これにより、波形板材の各剪断部は、非剪断部で連結さ
れると共に、各々隣接した剪断部と貼着されている。従
って、波形板材の切断作業が第１発明の方法に比べて一
層容易となる。さらに、上記波形板材を切断して得られ
る金属短繊維は、上記接着剤により数本毎に纏まってい
るので、かかる金属短繊維をコンクリートへ混入させる
ときの作業性が向上する。加えて、上記金属短繊維は、
コンクリート内において数本毎に纏まった状態で分散し
た後、上記接着剤が溶解されて互いに離散するので、コ
ンクリート内における散在の均一性も向上する。よっ
て、コンクリート建造物の引っ張り強度及び曲げ強度を
より一層向上させることができる等の効果を奏し得る。As a result, the sheared portions of the corrugated plate material are connected by the non-sheared portions and are also attached to the adjacent sheared portions. Therefore, the work of cutting the corrugated plate material becomes easier than the method of the first aspect of the invention. Further, since the short metal fibers obtained by cutting the corrugated plate material are grouped together by the adhesive, the workability when mixing the short metal fibers into concrete is improved. In addition, the metal short fibers are
After being dispersed in the concrete in groups of several, the adhesive is dissolved and dispersed from each other, so that the uniformity of dispersion in the concrete is also improved. Therefore, it is possible to obtain the effect that the tensile strength and bending strength of the concrete structure can be further improved.
第１図は本発明の一実施例における金属短繊維の製造方
法に供される製造装置の要部を示す概略の正面図、第２
図は第１図に示した上刃の変形例を示す概略の正面図、
第３図は帯板を剪断して得られる波形板材の概略の平面
図、第４図は帯板を剪断して得られる波形板材の概略の
断面図、第５図は波形板材を切断して得られる金属短繊
維の斜視図、第６図は製造装置の概略の斜視図、第７図
及び第８図は他の上刃により帯板を剪断して得られる波
形板材の変形例を示す概略の平面図である。 １は上刃、1aは切欠部、１は下刃、３は帯板、７は段付
け装置、８は剪断装置、９は切断装置、15は波形板材、
15aは剪断部、15bは非剪断部、16は金属短繊維である。FIG. 1 is a schematic front view showing a main part of a manufacturing apparatus used for a method for manufacturing short metal fibers in one embodiment of the present invention, and FIG.
The figure is a schematic front view showing a modified example of the upper blade shown in FIG.
FIG. 3 is a schematic plan view of a corrugated plate material obtained by shearing a strip plate, FIG. 4 is a schematic sectional view of a corrugated plate material obtained by shearing a strip plate, and FIG. FIG. 6 is a perspective view of the obtained metal short fiber, FIG. 6 is a schematic perspective view of the manufacturing apparatus, and FIGS. 7 and 8 are schematic views showing a modified example of the corrugated plate material obtained by shearing the strip plate with another upper blade. FIG. 1 is an upper blade, 1a is a notch, 1 is a lower blade, 3 is a strip plate, 7 is a stepping device, 8 is a shearing device, 9 is a cutting device, 15 is a corrugated plate material,
Reference numeral 15a is a sheared portion, 15b is a non-sheared portion, and 16 is a short metal fiber.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 昌平 兵庫県神戸市垂水区千鳥ケ丘１丁目９−７ −301 (72)発明者 縄間 克行 兵庫県加古川市志方町上富木120−191 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shohei Tanaka 1-9-7 Chidorigaoka, Tarumi-ku, Kobe-shi, Hyogo Prefecture (72) Inventor Katsuyuki Nawama 120-191 Kamitomi, Shikata-cho, Kakogawa-shi, Hyogo
Claims (10)
残して、下刃と、刃面が帯板の幅方向に波形に形成され
た上刃とにより帯板を剪断し、剪断部と非剪断部とから
成る波形板材を作製した後、剪断部同士が非剪断部で連
結された状態で上記剪断部を所望の製品長さに切断して
金属短繊維を得ることを特徴とする金属短繊維の製造方
法。1. A strip is sheared by a lower blade and an upper blade whose blade surface is corrugated in the width direction of the strip, leaving a part of the strip in the width direction continuously fed. Then, after producing a corrugated plate material consisting of a sheared portion and a non-sheared portion, a short metal fiber is obtained by cutting the sheared portion into a desired product length in a state where the sheared portions are connected by the non-sheared portion. A method for producing a short metal fiber, comprising:
近傍に形成される特許請求の範囲第１項記載の金属短繊
維の製造方法。2. The method for producing a short metal fiber according to claim 1, wherein the non-shearing portion is formed near both ends of the corrugated plate material.
れている特許請求の範囲第１項記載の金属短繊維の製造
方法。3. The method for producing a short metal fiber according to claim 1, wherein the upper blade has a cutout portion formed in a part of a lower surface thereof.
れると共に、帯板の剪断時には、帯板をその幅方向に蛇
行させる特許請求の範囲第１項記載の金属短繊維の製造
方法。4. The short metal fiber according to claim 1, wherein the upper blade has a cutout portion formed in a part of a lower surface thereof, and when the strip plate is sheared, the strip plate meanders in the width direction thereof. Manufacturing method.
れると共に、帯板の剪断時に、上刃を帯板の幅方向に往
復移動させる特許請求の範囲第１項記載の金属短繊維の
製造方法。5. The upper blade according to claim 1, wherein a notch is formed in a part of the lower surface of the upper blade, and the upper blade reciprocates in the width direction of the strip when the strip is sheared. Method for producing short metal fibers.
残して、下刃と、刃面が帯板の幅方向に波形に形成され
た上刃とにより帯板を剪断し、剪断部と非剪断部とから
成る波形板材を作製した後、上記剪断部を水溶性の接着
剤で固定し、次に剪断部を所望の製品長さに切断して金
属短繊維を得ることを特徴とする金属短繊維の製造方
法。6. A strip is sheared by a lower blade and an upper blade whose blade surface is corrugated in the width direction of the strip, leaving a part of the strip in a width direction continuously fed. Then, after producing a corrugated plate material consisting of a sheared portion and a non-sheared portion, the sheared portion is fixed with a water-soluble adhesive, and then the sheared portion is cut into a desired product length to obtain a short metal fiber. A method for producing a short metal fiber, comprising:
近傍に形成されている特許請求の範囲第６項記載の金属
短繊維の製造方法。7. The method for producing a short metallic fiber according to claim 6, wherein the non-shearing portion is formed near both ends of the corrugated plate material.
れている特許請求の範囲第６項記載の金属短繊維の製造
方法。8. The method for producing a short metal fiber according to claim 6, wherein the upper blade has a notch formed in a part of a lower surface thereof.
れると共に、帯板の剪断時には、帯板をその幅方向に蛇
行させる特許請求の範囲第６項記載の金属短繊維の製造
方法。9. The short metal fiber according to claim 6, wherein the upper blade has a cutout portion formed in a part of a lower surface thereof, and the strip plate meanders in the width direction when the strip plate is sheared. Manufacturing method.
されると共に、帯板の剪断時に、上刃を帯板の幅方向に
往復移動させる特許請求の範囲第６項記載の金属短繊維
の製造方法。10. The upper blade according to claim 6, wherein a notch is formed in a part of the lower surface of the upper blade, and the upper blade reciprocates in the width direction of the strip when the strip is sheared. Method for producing short metal fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62003025A JPH0732970B2 (en) | 1987-01-09 | 1987-01-09 | Method for producing short metal fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62003025A JPH0732970B2 (en) | 1987-01-09 | 1987-01-09 | Method for producing short metal fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63174829A JPS63174829A (en) | 1988-07-19 |
| JPH0732970B2 true JPH0732970B2 (en) | 1995-04-12 |
Family
ID=11545783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62003025A Expired - Lifetime JPH0732970B2 (en) | 1987-01-09 | 1987-01-09 | Method for producing short metal fibers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732970B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5525015A (en) * | 1978-08-10 | 1980-02-22 | Nippon Kogaku Kk <Nikon> | Driving device of shutter blade |
-
1987
- 1987-01-09 JP JP62003025A patent/JPH0732970B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5525015A (en) * | 1978-08-10 | 1980-02-22 | Nippon Kogaku Kk <Nikon> | Driving device of shutter blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63174829A (en) | 1988-07-19 |
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