JP4657117B2 - Method for forming opening notch in ALC panel - Google Patents

Method for forming opening notch in ALC panel Download PDF

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JP4657117B2
JP4657117B2 JP2006031771A JP2006031771A JP4657117B2 JP 4657117 B2 JP4657117 B2 JP 4657117B2 JP 2006031771 A JP2006031771 A JP 2006031771A JP 2006031771 A JP2006031771 A JP 2006031771A JP 4657117 B2 JP4657117 B2 JP 4657117B2
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circular saw
saw blade
main surface
cut
panel
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勤 堀田
誠 大桐
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クリオン株式会社
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Description

本発明は、補強鉄筋が埋設されたALCパネル(軽量気泡コンクリートパネル)の小口面の中間部に開口切欠を形成する方法に関する。   The present invention relates to a method of forming an opening notch in an intermediate portion of a small edge surface of an ALC panel (lightweight cellular concrete panel) in which reinforcing reinforcing bars are embedded.

ALCパネルの小口面に開口切欠を形成することがある。例えば、ALCパネルを床として敷設する際には、柱と干渉する部分を切除して開口切欠とする必要がある。そして、このような開口切欠を形成する場合でも、ALCパネルに埋設されている補強鉄筋の切断を伴うことになるので、ALCパネルを所要の長さに切断する場合(特許文献1)と同様に、補強鉄筋の切断に耐えて効率的に切断できる丸鋸刃を用いることが好ましい。ルーター、ジグソー等の刃では、補強鉄筋の切断に耐えられず、効率も低いからである。   An opening notch may be formed on the facet of the ALC panel. For example, when laying an ALC panel as a floor, it is necessary to cut off a portion that interferes with a pillar to form an opening notch. Even when such an opening notch is formed, the reinforcing reinforcing bar embedded in the ALC panel is cut, so that the ALC panel is cut to a required length (Patent Document 1). It is preferable to use a circular saw blade that can withstand the cutting of the reinforcing reinforcing bar and can cut efficiently. This is because the blades of routers, jigsaws, etc. cannot withstand the cutting of reinforcing steel bars and have low efficiency.

ここで、図14(a)に示すように、ALCパネル100の角部に開口切欠101を形成する場合には、ALCパネルを所要の長さに切断する場合(特許文献1)と同様に、丸鋸刃110を2つの小口面から交差進入方向へ作用させて小口切り込みを形成することのみにより、容易に形成することができる。   Here, as shown in FIG. 14A, when the opening notch 101 is formed at the corner of the ALC panel 100, as in the case of cutting the ALC panel to a required length (Patent Document 1), The circular saw blade 110 can be formed easily only by acting in the cross approach direction from the two small facets to form the small cut.

しかし、小口面の中間部に開口切欠103を形成する場合には、丸鋸刃をパネル小口面から作用させることのみによっては、小口切り込みを形成することはできるが、小口面にかからず主面(表面及び裏面)内に収まる主面内切り込みを形成することができない。   However, in the case where the opening notch 103 is formed in the middle portion of the fore edge surface, the incision can be formed only by allowing the circular saw blade to act from the fore edge surface of the panel. It is not possible to form a cut in the main surface that fits within the surface (front surface and back surface).

そこで現行では、小口面の中間部に開口切欠103を形成するために、まず、図14(a)に示すように、丸鋸刃110を小口面から交差進入方向へ作用させて小口切り込み104を形成する作業を、小口面の長さ方向に少しずつずらしなから多数回行う。その後、多数本の小口切り込み104で弱くなったパネル部分105をハンマーで叩き割り、図14(b)に示すように、露出した補強鉄筋106をディスクグラインダー等で切断し、形成された開口切欠103の内面をヤスリで仕上げている。
特開平10−86130号公報
Therefore, at present, in order to form the opening notch 103 in the middle portion of the small edge surface, first, as shown in FIG. 14A, the circular saw blade 110 is caused to act from the small edge surface in the cross approach direction so that the small edge notch 104 is formed. The forming operation is performed many times without being shifted little by little in the length direction of the facet. After that, the panel portion 105 weakened by a large number of small cuts 104 is struck with a hammer, and the exposed reinforcing bar 106 is cut with a disc grinder or the like as shown in FIG. The inside is finished with a file.
Japanese Patent Laid-Open No. 10-86130

しかし、上記のように多数本の小口切り込み104を形成する方法では、その形成自体に工数と時間がかかる。さらに、叩き割るパネル部分105は、多数本の小口切り込み104で弱くなっているとはいえ、パネルの本体に対してパネル厚さ方向には全厚で繋がっているため、叩き割るのが難しく、また、割り面が平坦になりにくい。割り面に大きな凹凸が残ると、ヤスリによる仕上げに大変な手間がかかる。また、前記のとおり、露出した補強鉄筋106を切断するのにも手間がかかる。   However, in the method of forming a large number of small cuts 104 as described above, the formation itself takes time and man hours. Furthermore, although the panel portion 105 to be broken is weakened by a large number of small cuts 104, it is difficult to break because it is connected to the panel body in the thickness direction in the panel thickness direction. In addition, the split surface is difficult to be flat. If large irregularities remain on the split surface, it takes a lot of work to finish with a file. Further, as described above, it takes time to cut the exposed reinforcing steel bars 106.

そこで本願発明者は、丸鋸刃やジグソー以外にも、次のような種々の手段により開口切欠を形成することを試みたが、いずれもうまくはいかなかった。   The inventor of the present application tried to form the opening notch by various means other than the circular saw blade and the jigsaw, but none of them was successful.

(a)ワイヤーソー(一般には御影石等の加工用)
切り込み速度を100mm/分以上にすると、ワイヤーの抜け側で補強鉄筋を弾き、ALCパネルを損傷させる。
(b)電着ホイール・砥石ホイール(一般に表面研磨等の加工用)
ホイールの砥粒間にALC切粉が入り、切削できなくなる。補強鉄筋を切断する時は、切削抵抗が大きいため、切削スピードを落とさなければならない。
(c)エンドミル(一般には金属等の加工用)
切り込み速度300mm/分位で切削できるが、少数(例えば50箇所位)の開口穴を形成するだけで、刃部が磨耗し切削不可能となる。
(d)高圧水での切断(一般には鋼板・石材・食物等の加工用)
補強鉄筋を切断する時に、高圧水が補強鉄筋に当たって広がり、高圧水の抜け側でALCパネルを大きくえぐって損傷させる。
(A) Wire saw (generally for granite processing)
If the cutting speed is set to 100 mm / min or more, the reinforcing reinforcing bar is repelled on the wire withdrawal side, and the ALC panel is damaged.
(B) Electrodeposition wheel and grinding wheel (generally for processing such as surface polishing)
ALC chips enter between the abrasive grains of the wheel, making cutting impossible. When cutting reinforcing steel bars, the cutting speed is high, so the cutting speed must be reduced.
(C) End mill (generally for processing metal etc.)
Although cutting can be performed at a cutting speed of about 300 mm / min, only by forming a small number of opening holes (for example, about 50 places), the blade portion is worn and cutting becomes impossible.
(D) Cutting with high-pressure water (generally for processing of steel plates, stones, food, etc.)
When cutting the reinforcing bar, the high-pressure water hits the reinforcing bar and spreads, and greatly damages the ALC panel on the outlet side of the high-pressure water.

そこで、本発明の課題は、ALCパネルの小口面の中間部に開口切欠を、補強鉄筋の切断を伴いながらもALCパネルや工具をほとんど傷めることなく効率的に形成することができる方法を提供することにある。   Therefore, an object of the present invention is to provide a method capable of efficiently forming an opening notch in the middle portion of the facet of an ALC panel with almost no damage to the ALC panel or tool while cutting the reinforcing reinforcing bars. There is.

本発明は、補強鉄筋が埋設されたALCパネルの小口面の中間部に開口切欠を形成する方法であって、次の(A)小口切り込み工程と、(B)主面内切り込み工程とを含むALCパネルの開口切欠の形成方法である。
(A1)回転する丸鋸刃を前記小口面における開口切欠の両端となる両端二位置から主面平行方向へ相対移動させて、2本の第一小口切り込みを前記補強鉄筋の切断を伴って形成するA1ステップと、
(A2)回転する丸鋸刃を前記小口面の前記両端二位置の中間における後記B2ステップ用の丸鋸刃の軸着部の直径以上に互いに離間した中間二位置から主面平行方向へ相対移動させて、2本の第二小口切り込みを前記補強鉄筋の切断を伴って形成するA2ステップと
を含む(A)小口切り込み工程。
(B1)回転する丸鋸刃をALCパネルの一主面からパネル厚さ方向へ相対移動させ、パネル厚さの中央付近まで又はそれ以上に作用させるB1ステップと、
(B2)回転する丸鋸刃をALCパネルの他主面からパネル厚さ方向へ相対移動させ、該丸鋸刃の軸着部が一主面に達するまで作用させるB2ステップとにより、
主面内切り込みを形成し、前記B2ステップの途中で、2本の前記第二小口切り込みと前記主面内切り込みとで切り離されたパネル部分を脱落させてできる空所を前記軸着部が通過する(B)主面内切り込み工程。
The present invention is a method of forming an opening notch in an intermediate portion of a small edge surface of an ALC panel in which reinforcing reinforcing bars are embedded, and includes the following (A) small edge cutting step and (B) in-main surface cutting step. This is a method of forming an opening notch in an ALC panel.
(A1) A rotating circular saw blade is relatively moved in the principal surface parallel direction from two positions at both ends, which are both ends of the opening notch in the small edge surface, and two first small edge cuts are formed along with the cutting of the reinforcing reinforcing bars. A1 step to
(A2) Relative movement of the rotating circular saw blade from two intermediate positions separated from each other by more than the diameter of the shaft attachment portion of the circular saw blade for B2 step in the middle of the two positions on both ends of the small facet in the parallel direction of the main surface And (A) a small incision step including an A2 step of forming two second small incisions with the cutting of the reinforcing reinforcing bars.
(B1) A B1 step in which a rotating circular saw blade is relatively moved from one main surface of the ALC panel in the panel thickness direction, and acts to the vicinity of the center of the panel thickness or more.
(B2) B2 step of causing the rotating circular saw blade to move relative to the panel thickness direction from the other main surface of the ALC panel, and acting until the axially attached portion of the circular saw blade reaches one main surface,
Form a main surface incision, and the shaft attachment part passes through a space formed by dropping off the panel part separated by the two second fork cuts and the main surface incision in the middle of the B2 step. (B) In-plane cutting process.

前記B1ステップ用の丸鋸刃の直径Dが、次式の範囲にあることが好ましい。
[t/有効直径率]≦D≦[a+(L2/4a)]・・・(数1)
ここで、有効直径率は(D−丸鋸刃の無効中心部の直径)/D
tはALCパネルのパネル厚さ
aはt/2
Lは主面内切り込みの長さ
The diameter D of the circular saw blade for the B1 step is preferably in the range of the following formula.
[T / effective diameter ratio] ≦ D ≦ [a + (L 2 / 4a)] (Equation 1)
Here, the effective diameter ratio is (D−the diameter of the ineffective central portion of the circular saw blade) / D
t is the panel thickness of the ALC panel
a is t / 2
L is the length of the cut in the main surface

前記B2ステップ用の丸鋸刃の直径Dが、次式の範囲にあることが好ましい。
[t/有効直径率]≦D≦L・・・(数2)
ここで、有効直径率は(D−丸鋸刃の無効中心部の直径)/D
tはALCパネルのパネル厚さ
Lは主面内切り込みの長さ
The diameter D of the circular saw blade for the B2 step is preferably in the range of the following formula.
[T / effective diameter ratio] ≦ D ≦ L (Expression 2)
Here, the effective diameter ratio is (D−the diameter of the ineffective central portion of the circular saw blade) / D
t is the panel thickness of the ALC panel
L is the length of the cut in the main surface

そして、前記B2ステップ用の丸鋸刃の直径Dが主面内切り込みの長さLとほぼ等しいとき、前記B2ステップにより、前記第一小口切り込みと前記第二小口切り込みと前記主面内切り込みとで切り離されたパネル部分も脱落させて、前記小口面の中間部に開口切欠を形成することができる。   Then, when the diameter D of the circular saw blade for the B2 step is substantially equal to the length L of the main surface incision, the first forehead incision, the second forehead incision, and the incision in the main surface are performed by the B2 step. The panel part cut off in step (1) can also be removed to form an opening notch in the middle part of the fore edge surface.

また、前記B2ステップ用の丸鋸刃の直径Dが主面内切り込みの長さLより小さいとき、前記(B)主面内切り込み工程における前記B2ステップ後に、
(B3)回転する丸鋸刃を主面平行方向へ相対移動させて、前記主面内切り込みを延ばしていき、前記第一小口切り込みに至ったときにパネル厚さ方向へ相対移動させ、パネル厚さの全体に作用させるB3ステップ
を行うことにより、前記第一小口切り込みと前記第二小口切り込みと前記主面内切り込みとで切り離されたパネル部分を脱落させて、前記小口面の中間部に開口切欠を形成することができる。
Further, when the diameter D of the circular saw blade for the B2 step is smaller than the length L of the in-plane incision, after the B2 step in the (B) in-plane incision step,
(B3) The rotating circular saw blade is relatively moved in the main surface parallel direction to extend the cut in the main surface, and when the first fork cut is reached, the circular saw blade is relatively moved in the panel thickness direction to obtain the panel thickness. By performing the B3 step that acts on the entire length, the panel portion separated by the first fork cut, the second fork cut and the main surface cut is dropped, and an opening is formed at the middle of the fork face. Notches can be formed.

前記B3ステップを行うとき、前記(A)小口切り込み工程では、
(A3)回転する丸鋸刃を前記小口面における、前記第二小口切り込みより前記第一小口切り込みへ向かって前記丸鋸刃の有効半径以下のピッチで離間した、少なくとも一位置から主面平行方向へ相対移動させて、少なくとも1本の第三小口切り込みを前記補強鉄筋の切断を伴って形成するA3ステップ
を行うことが好ましい。
When performing the B3 step, in the (A) fork cutting process,
(A3) The rotating circular saw blade is spaced from the second fork cut to the first fork cut at a pitch equal to or less than the effective radius of the circular saw blade on the fork face, parallel to the main surface from at least one position. It is preferable to perform the A3 step in which at least one third fork cut is formed along with the cutting of the reinforcing reinforcing bar.

前記各手段において、丸鋸刃の軸着部は、丸鋸刃の中心部を回転軸に取着するための構造部であって、特定の構造に限定されないが、回転軸に固定された内フランジと、締付ボルトと、締付ボルトにより回転軸に止着される外フランジとで構成され、両フランジ間に丸鋸刃の中心部を挟着するものを例示できる。丸鋸刃のうち軸着部の直径分は切り込み能力のない無効中心部の直径であり、それ以外が切り込み能力のある有効部である。よって、丸鋸刃の有効直径率は(D−丸鋸刃の軸着部の直径)/Dで表される。 In each of the above means, the shaft attachment portion of the circular saw blade is a structure portion for attaching the center portion of the circular saw blade to the rotating shaft, and is not limited to a specific structure, but is fixed to the rotating shaft. Examples include a flange, a tightening bolt, and an outer flange that is fastened to the rotating shaft by the tightening bolt, and the center portion of the circular saw blade is sandwiched between both flanges. Of the circular saw blade, the diameter of the shaft-attached portion is the diameter of the ineffective center portion having no cutting ability , and the other portion is the effective portion having the cutting ability. Therefore, the effective diameter ratio of the circular saw blade is represented by (D−diameter of the shaft attachment portion of the circular saw blade) / D.

前記各ステップにおける相対移動は、丸鋸刃の方を移動させる方が容易であるが、ALCパネルの方を移動させることもできる。   The relative movement in each step is easier to move the circular saw blade, but the ALC panel can also be moved.

(A)小口切り込み工程の各ステップと、(B)主面内切り込み工程の各ステップの順序については、次の順序が必要であるが、その他の順序は特に限定されない。
・A1ステップ及びA2ステップがB2ステップより前に行われることが必要である。
・B1ステップがB2ステップより前に行われることが必要である。
・B3ステップを行うときには、A3ステップがB3ステップより前に行われることが必要である。
Regarding the order of (A) each step of the small cut process and (B) each step of the in-plane cutting process, the following order is necessary, but other orders are not particularly limited.
-The A1 step and the A2 step must be performed before the B2 step.
-The B1 step needs to be performed before the B2 step.
When performing the B3 step, the A3 step needs to be performed before the B3 step.

開口切欠の形状は大半が長方形なので、2本の第一小口切り込みは小口面から直角に切り込むことが大半である。しかし、これに限るものではなく、例えば、開口切欠の形状を台形にして、2本の第一小口切り込みを小口面から直角以外の角度で切り込むこともできる。   Since the shape of the opening notch is mostly rectangular, the two first fork cuts are mostly cut at right angles from the fork face. However, the present invention is not limited to this, and for example, the shape of the opening notch can be trapezoidal, and the two first fork cuts can be cut at an angle other than a right angle from the fork face.

本発明の方法によれば、ALCパネルの小口面の中間部に開口切欠を、補強鉄筋の切断を伴いながらもALCパネルや工具をほとんど傷めることなく効率的に形成することができる。   According to the method of the present invention, it is possible to efficiently form an opening notch in the middle portion of the small edge surface of the ALC panel with almost no damage to the ALC panel or tool while cutting the reinforcing reinforcing bars.

補強鉄筋5が埋設されたALCパネル1の小口面4の中間部に開口切欠を形成する方法であって、次の(A)小口切り込み工程と、(B)主面内切り込み工程とを含むALCパネルの開口切欠の形成方法である。
(A1)回転する丸鋸刃51を小口面4における開口切欠の両端となる両端二位置から主面平行方向へ相対移動させて、2本の第一小口切り込み11を補強鉄筋5の切断を伴って形成するA1ステップと、
(A2)回転する丸鋸刃51を小口面4の両端二位置の中間における後記B2ステップ用の丸鋸刃41の軸着部44の直径以上に互いに離間した中間二位置から主面平行方向へ相対移動させて、2本の第二小口切り込み12を補強鉄筋5の切断を伴って形成するA2ステップと
を含む(A)小口切り込み工程。
(B1)回転する丸鋸刃42をALCパネルの一主面3からパネル厚さ方向へ相対移動させ、パネル厚さの中央付近まで又はそれ以上に作用させるB1ステップと、
(B2)回転する丸鋸刃41をALCパネルの他主面2からパネル厚さ方向へ相対移動させ、該丸鋸刃41の軸着部44が一主面3に達するまで作用させるB2ステップとにより、
主面内切り込み14を形成し、B2ステップの途中で、2本の第二小口切り込み12と主面内切り込み14とで切り離されたパネル部分15を脱落させてできる空所を軸着部44が通過する(B)主面内切り込み工程。
A method of forming an opening notch in an intermediate portion of the small edge surface 4 of the ALC panel 1 in which the reinforcing reinforcing bars 5 are embedded, and includes the following (A) small edge cutting step and (B) in-main surface cutting step. This is a method for forming an opening notch in a panel.
(A1) The rotating circular saw blade 51 is relatively moved in the principal surface parallel direction from two positions at both ends, which are both ends of the opening notch in the small edge surface 4, and the two first small edge notches 11 are accompanied by cutting the reinforcing reinforcing bars 5. A1 step to be formed,
(A2) The rotating circular saw blade 51 is moved in the direction parallel to the main surface from two intermediate positions separated from each other by more than the diameter of the shaft mounting portion 44 of the circular saw blade 41 for B2 step described later in the middle between the two positions on both ends of the facet surface 4. (A) A small incision process including an A2 step in which the two second small incisions 12 are formed by being relatively moved to form the second reinforcing incisions 12 along with the cutting of the reinforcing reinforcing bars 5.
(B1) A B1 step in which the rotating circular saw blade 42 is relatively moved from one main surface 3 of the ALC panel in the panel thickness direction and acts to the vicinity of the center of the panel thickness or more.
(B2) B2 step in which the rotating circular saw blade 41 is moved relative to the panel thickness direction from the other main surface 2 of the ALC panel, and the shaft mounting portion 44 of the circular saw blade 41 acts until reaching the one main surface 3; By
In the middle of the B2 step, the main surface incision 14 is formed, and in the middle of the B2 step, the pivoting portion 44 has a space formed by dropping off the panel portion 15 separated by the two second fork cuts 12 and the main surface incision 14. Passing (B) In-plane cutting process.

B1ステップ用の丸鋸刃42の直径Dは式(数1)の範囲にある。また、B2ステップ用の丸鋸刃41の直径Dは式(数2)の範囲にある。   The diameter D of the circular saw blade 42 for the B1 step is in the range of the formula (Equation 1). Further, the diameter D of the circular saw blade 41 for the B2 step is in the range of the formula (Equation 2).

そして、B2ステップ用の丸鋸刃41の直径Dが主面内切り込み14の長さLとほぼ等しいとき、B2ステップにより、第一小口切り込み11と第二小口切り込み12と主面内切り込み14とで切り離されたパネル部分16も脱落させて、小口面4の中間部に開口切欠10を形成することができる。   When the diameter D of the circular saw blade 41 for the B2 step is substantially equal to the length L of the in-plane incision 14, the first incision 11, the second incision 12, and the in-surface incision 14 are performed by the B2 step. The panel portion 16 cut off in step (1) can also be removed, and the opening notch 10 can be formed in the middle portion of the facet surface 4.

また、B2ステップ用の丸鋸刃41の直径Dが主面内切り込み14の長さLより小さいとき、(B)主面内切り込み工程におけるB2ステップ後に、
(B3)回転する丸鋸刃41を主面平行方向へ相対移動させて、主面内切り込み14を延ばしていき、第一小口切り込み11に至ったときにパネル厚さ方向へ相対移動させ、パネル厚さの全体に作用させるB3ステップ
を行うことにより、第一小口切り込み11と第二小口切り込み12と主面内切り込み14とで切り離されたパネル部分17を脱落させて、小口面4の中間部に開口切欠10を形成することができる。
When the diameter D of the circular saw blade 41 for the B2 step is smaller than the length L of the main surface incision 14, (B) after the B2 step in the main surface incision step,
(B3) The rotating circular saw blade 41 is relatively moved in the main surface parallel direction to extend the main surface incision 14, and when it reaches the first fork notch 11, it is relatively moved in the panel thickness direction. By performing the B3 step that acts on the entire thickness, the panel portion 17 separated by the first fork notch 11, the second fork notch 12, and the main surface incision 14 is dropped off, so that the middle portion of the fork 4 An opening notch 10 can be formed in the opening.

B3ステップを行うとき、(A)小口切り込み工程では、
(A3)回転する丸鋸刃51を小口面4における、第二小口切り込み12より第一小口切り込み11へ向かってB3ステップ用の丸鋸刃41の有効半径以下のピッチで離間した、少なくとも一位置から主面平行方向へ相対移動させて、少なくとも1本の第三小口切り込み13を補強鉄筋5の切断を伴って形成するA3ステップ
を行うことが好ましい。
When performing the B3 step, (A)
(A3) At least one position where the rotating circular saw blade 51 is spaced from the second fork cut 12 to the first fork cut 11 at a pitch equal to or less than the effective radius of the B3 step circular saw blade 41 on the fork surface 4. It is preferable to perform the A3 step in which at least one third fork cut 13 is formed along with the cutting of the reinforcing reinforcing bars 5 by relatively moving in the main surface parallel direction.

図1〜図13は本発明の実施例を示している。
[ALCパネル1]
図1及び図2に例示したALCパネル1は、その主面2,3(ここでは表面2及び裏面3)が長方形をなす一般的なものであり、補強鉄筋5が埋設されている。補強鉄筋5は、主筋と副筋とを縦横に溶接してなる二枚の枠体6を所定間隔をおいて並べ、両枠体6にスペーサ7を架け渡して溶接することにより、かご状に形成されたものである。本実施例は、このALCパネル1の小口面の中間部に小口切り込み11,12,13と主面内切り込み14とを形成し、もって開口切欠10を形成する方法に関するものである。
1 to 13 show an embodiment of the present invention.
[ALC panel 1]
The ALC panel 1 illustrated in FIG. 1 and FIG. 2 is a general one in which main surfaces 2 and 3 (here, the front surface 2 and the back surface 3) are rectangular, and a reinforcing reinforcing bar 5 is embedded therein. The reinforcing reinforcing bars 5 are formed in a cage shape by arranging two frames 6 formed by welding the main bars and the auxiliary bars vertically and horizontally at predetermined intervals, and spanning the spacers 7 over the frames 6 and welding them. It is formed. The present embodiment relates to a method of forming the opening cuts 10 by forming the cuts 11, 12, 13 and the cuts 14 in the main surface at the middle part of the cut surface of the ALC panel 1.

[加工装置]
図3に例示した同方法に使用する加工装置は、次の搬送装置30と主面内切り込み装置40と小口切り込み装置50とを備える。
搬送装置30は、パネル長さの延長方向に延びる基台31に多数の回転可能なローラ32を並設し、該ローラ32を駆動装置(図示略)により回転駆動するようにしたローラ式搬送装置である。主面内切り込み装置40の手前部位では、丸鋸刃41,42の昇降を逃がせるように基台31が切れている。小口切り込み装置50の手前部位では、丸鋸刃51の進入を逃がせるように基台31が奥まっている。
[Processing equipment]
The processing apparatus used for the method illustrated in FIG. 3 includes the following transport apparatus 30, a main surface incision apparatus 40, and a small edge incision apparatus 50.
The conveying device 30 is a roller-type conveying device in which a large number of rotatable rollers 32 are arranged in parallel on a base 31 extending in the extending direction of the panel length, and the rollers 32 are rotationally driven by a driving device (not shown). It is. At the front part of the in-plane cutting device 40, the base 31 is cut so that the circular saw blades 41 and 42 can be lifted and lowered. At the front portion of the fork cutting device 50, the base 31 is recessed so that the entry of the circular saw blade 51 can be released.

主面内切り込み装置40は、パネル長さ方向に延びる主面内切り込み14を形成するものである。主面内切り込み装置40は、パネル長さ方向と平行に向けた前記上下二つの丸鋸41,42と、各丸鋸刃41,42の回転軸43、軸受45及びモータ46と、上下の各軸受45及びモータ46を支持する移動台47とを備え、さらにこの移動台47をパネル厚さ方向(上下方向)とパネル長さ方向(搬送方向)とパネル幅方向(搬送直角方向)とに駆動する駆動装置48を備えている。移動台47は、上下用を一つにまとめてもよいし(二つの丸鋸41,42が上下方向に一緒に駆動される)、上下用で二つに分離独立させてもよい(二つの丸鋸41,42が上下方向に独立して駆動される)。   The main surface incision device 40 forms the main surface incision 14 extending in the panel length direction. The in-plane incision device 40 includes the upper and lower circular saws 41 and 42 parallel to the panel length direction, the rotating shaft 43 of each circular saw blade 41 and 42, a bearing 45 and a motor 46, and upper and lower A moving table 47 that supports the bearing 45 and the motor 46 is provided, and the moving table 47 is driven in the panel thickness direction (vertical direction), the panel length direction (transport direction), and the panel width direction (transport right-angle direction). A driving device 48 is provided. The movable table 47 may be integrated into one for up and down (two circular saws 41 and 42 are driven together in the up and down direction), or may be separated into two for up and down (two The circular saws 41 and 42 are driven independently in the vertical direction).

下側の丸鋸刃42には直径Dが前記式(数1)の範囲にあるものを用い、上側の丸鋸刃41には直径Dが前記式(数2)の範囲にあるものを用いる。具体的には、後述する第一実施例(t=100mm、L=220mmの開口切欠)に用いる図5〜図7の丸鋸刃41,42は上下共に、直径Dが220mm(Lと等しい)である。また、第二実施例(t=100mm、L=300mmの開口切欠)に用いる図9〜図13の丸鋸刃41,42も上下共に、同じく直径Dが220mmである。   The lower circular saw blade 42 has a diameter D in the range of the above equation (Equation 1), and the upper circular saw blade 41 has a diameter D in the range of the above equation (Equation 2). . Specifically, the circular saw blades 41 and 42 of FIGS. 5 to 7 used in a first embodiment (t = 100 mm, L = 220 mm opening notch) to be described later have a diameter D of 220 mm (equal to L) both above and below. It is. Also, the circular saw blades 41 and 42 of FIGS. 9 to 13 used in the second embodiment (open cutout of t = 100 mm, L = 300 mm) have the same diameter D of 220 mm in both the upper and lower sides.

各丸鋸刃41,42の中心部は、軸着部44により回転軸43に交換可能に取着されている。軸着部44は、回転軸43に固定されたフランジ44aと、締付ネジ44bとで構成され、締付ネジ44bを丸鋸刃41,42の中心部に設けられた取付穴を通してフランジ44aに締め付ける。本実施例では、軸着部44の直径(最大直径)はフランジ44aの直径で規定され、丸鋸刃41,42のうち軸着部44の直径分は切り込み能力のない無効中心部の直径であり、それ以外が切り込み能力のある有効部である。そして本例の丸鋸刃41,42では、軸着部44の直径(無効中心部の直径)は70mmであり、(D−丸鋸刃の軸着部の直径)で表される有効直径は150mmであり、(D−丸鋸刃の軸着部の直径)/2で表される有効半径は75mmであり、(D−丸鋸刃の軸着部の直径)/Dで表される有効直径率は0.68である。 The center part of each circular saw blade 41 and 42 is attached to the rotating shaft 43 by a shaft attaching part 44 so as to be exchangeable. The shaft attaching portion 44 is composed of a flange 44a fixed to the rotating shaft 43 and a fastening screw 44b. The fastening screw 44b is passed through an attachment hole provided in the center of the circular saw blades 41 and 42 to the flange 44a. tighten. In this embodiment, the diameter (maximum diameter) of the shaft attachment portion 44 is defined by the diameter of the flange 44a, and the diameter of the shaft attachment portion 44 of the circular saw blades 41 and 42 is the diameter of the ineffective center portion having no cutting ability. Yes, the others are effective parts with cutting ability. In the circular saw blades 41 and 42 of this example, the diameter of the shaft attachment portion 44 (the diameter of the invalid center portion) is 70 mm, and the effective diameter represented by (D-diameter of the shaft attachment portion of the circular saw blade) is 150 mm, and the effective radius represented by (D−diameter of the circular saw blade's axis) / 2 is 75 mm, and (D−effective diameter of the circular saw blade's axial part) / D. The diameter ratio is 0.68.

次に、小口切り込み装置50は、長手側の小口面4に対して直角に向けた前記丸鋸刃51と、その回転軸53、軸受55及びモータ56と、これらを支持する移動台57とを備え、さらにこの移動台57をパネル幅方向(搬送直角方向)とパネル長さ方向(搬送方向)とに駆動する駆動装置(図示略)とから構成されている。丸鋸刃51の中心の高さは搬送されるALCパネル1の厚さの中央の高さに合わせてある。小口切り込み装置50では、直径が[切り込み深さ/丸鋸刃有効直径率]以上である一つの丸鋸刃51を用いる。同直径の上限は特に限定されず、スペースが許す限り大きい方が好ましい。   Next, the fork cutting device 50 includes the circular saw blade 51 oriented at a right angle to the fore edge surface 4 on the long side, the rotating shaft 53, the bearing 55 and the motor 56, and the movable table 57 for supporting them. And a driving device (not shown) for driving the movable table 57 in the panel width direction (perpendicular to the transport direction) and the panel length direction (transport direction). The height of the center of the circular saw blade 51 is adjusted to the height of the center of the thickness of the ALC panel 1 to be conveyed. The small edge cutting device 50 uses one circular saw blade 51 having a diameter equal to or greater than [cutting depth / circular saw blade effective diameter ratio]. The upper limit of the diameter is not particularly limited, and is preferably as large as the space allows.

その他、加工装置は、搬送されるALCパネル1の位置を検知するセンサ(図示略)と、該センサによる検知と予め設定された数値とに基づいて、主面内切り込み装置40の駆動装置48及びモータ46と、小口切り込み装置50の駆動装置及びモータ56とを制御する制御装置とを備えている。   In addition, the processing apparatus includes a sensor (not shown) for detecting the position of the ALC panel 1 to be conveyed, and a driving device 48 for the in-plane incision device 40 based on the detection by the sensor and a preset numerical value. A motor 46 and a controller for controlling the motor 56 and the driving device of the fork cutting device 50 are provided.

[第一実施例]
さて、前記加工装置を用いた下記の(A)小口切り込み工程と(B)主面内切り込み工程とを含む方法により、前記ALCパネル1の小口面4の中間部に開口切欠10を形成する。第一実施例は、t=100mmのALCパネル1の小口面に、L=220mmの開口切欠を形成する例であり、前記のとおり直径D=220mm(Lと等しい)の丸鋸刃41,42を用いる。
[First embodiment]
Now, an opening notch 10 is formed in an intermediate portion of the small edge surface 4 of the ALC panel 1 by a method including the following (A) small edge cutting step and (B) main surface cutting step using the processing apparatus. The first embodiment is an example in which an opening notch of L = 220 mm is formed on the small face of the ALC panel 1 of t = 100 mm. As described above, the circular saw blades 41 and 42 having a diameter D = 220 mm (equal to L). Is used.

(A)小口切り込み工程
搬送装置によりALCパネル1を搬送し、ALCパネル1の切り込み形成必要箇所が小口切り込み装置50の丸鋸刃51の位置にまで来たときにALCパネル1を停止させ、次のA1ステップとA2ステップとを行う。
(A) Fork cutting process The ALC panel 1 is conveyed by a conveying device, and when the position where the incision formation of the ALC panel 1 is required reaches the position of the circular saw blade 51 of the fork cutting device 50, the ALC panel 1 is stopped. A1 step and A2 step are performed.

(A1)A1ステップ
駆動装置(図示略)により、図4に示すように、小口切り込み装置50の回転する丸鋸刃51を、小口面4における開口切欠(10)の両端となる両端二位置(その間隔は220mm)から、主面平行方向(本例ではパネル幅方向)へ相対移動させて、開口切欠(10)の深さ分まで作用させることにより、2本の第一小口切り込み11を補強鉄筋5の切断を伴って形成する。
(A1) A1 step As shown in FIG. 4, the rotating saw blade 51 of the fork notch cutting device 50 is moved to both ends of the opening notch (10) in the fork edge surface 4 by a driving device (not shown). The distance is 220 mm), and the two first fork cuts 11 are reinforced by moving relative to the main surface parallel direction (in this example, the panel width direction) to the depth of the opening notch (10). It is formed with the cutting of the reinforcing bars 5.

(A2)A2ステップ
また、駆動装置(図示略)により、小口切り込み装置50の回転する丸鋸刃51を、小口面4の前記両端二位置の中間における後記B2ステップ用の丸鋸刃41の軸着部44の直径(70mm)以上に互いに離間(その間隔は本例では80mm)した中間二位置から、主面平行方向(本例ではパネル幅方向)へ相対移動させて、開口切欠(10)の深さ分まで作用させることにより、2本の第二小口切り込み12を補強鉄筋5の切断を伴って形成する。本例では、左側で隣り合う第一小口切り込み11と第二小口切り込み12との間隔と、右側で隣り合う第一小口切り込み11と第二小口切り込み12との間隔とが、いずれも70mmであり、これは後記B2ステップ用の丸鋸刃41の有効半径(75mm)以下である。
(A2) A2 step Further, by the drive device (not shown), the rotating circular saw blade 51 of the small notch cutting device 50 is moved to the axis of the circular saw blade 41 for the B2 step described later in the middle of the two positions on both ends of the small edge surface 4. An opening notch (10) is moved relative to the main surface parallel direction (panel width direction in this example) from two intermediate positions separated from each other by a diameter (70 mm or more) of the attachment portion 44 (the interval is 80 mm in this example). The two small fork cuts 12 are formed along with the cutting of the reinforcing reinforcing bars 5 by acting to the depth of. In this example, the distance between the first fork cut 11 and the second fork cut 12 adjacent on the left side and the distance between the first fork cut 11 and the second fork cut 12 adjacent on the right side are both 70 mm. This is less than the effective radius (75 mm) of the circular saw blade 41 for the B2 step described later.

A1ステップとA2ステップの先後は問わないし、混然と行ってもよい。例えば、小口切り込み11,12をその横並び順に形成すること、すなわち本例では第一小口切り込み11→第二小口切り込み12→第二小口切り込み12→第一小口切り込み11の順で形成することもできる。   The order after the A1 step and the A2 step is not critical, and may be mixed. For example, the fork cuts 11 and 12 can be formed in the horizontal order, that is, in this example, the first fork cut 11 → the second fork cut 12 → the second fork cut 12 → the first fork cut 11 can be formed in this order. .

これら小口切り込み11,12の形成時には、易削性のALCの切断のみならず難削性の補強鉄筋5の切断を伴うことになるが、丸鋸刃51は補強鉄筋5の切断に十分耐えて長寿命であり、また速度を落とす必要もなく高速で効率的に切断することができる。丸鋸刃51の切り込み速度は、特に限定されないが、1000〜6000mm/分程度の高速で行うことが効率上好ましく、その程度の高速でも補強鉄筋5を問題なく切断でき、ALCパネル1を損傷させることもない。   When these small cuts 11 and 12 are formed, not only easy-to-cut ALC cutting but also difficult-to-cut reinforcing reinforcing steel bars 5 are involved, but the circular saw blade 51 is sufficiently resistant to cutting the reinforcing steel bars 5. It has a long life and can be cut efficiently at high speed without the need to slow down. The cutting speed of the circular saw blade 51 is not particularly limited, but it is preferable in terms of efficiency to perform at a high speed of about 1000 to 6000 mm / min, and the reinforcing reinforcing bar 5 can be cut without any problem even at such a high speed, and the ALC panel 1 is damaged. There is nothing.

なお、この小口切り込み11,12は、パネル内部に(丸鋸刃ゆえに生じる)円弧状の切り残し部19を残したものとなるが、前記のとおり丸鋸刃51には直径の十分に大きいものを用いることができるので、切り残し部19はごく僅か(例えば2〜3mm幅程度)になる。よって、後述するパネル部分15、16を除去するとき、この切り残し部19は容易に割れ、また割った後のヤスリによる仕上げはほとんど不要である。また、小口切り込み11,12を形成した丸鋸刃51を上下方向に移動させることにより、切り残し部19を完全に無くすことが好ましい。   The small cuts 11 and 12 leave the arc-shaped uncut portion 19 (generated due to the circular saw blade) inside the panel, but the circular saw blade 51 has a sufficiently large diameter as described above. Therefore, the uncut portion 19 is very small (for example, about 2 to 3 mm width). Therefore, when removing the panel parts 15 and 16 which will be described later, the uncut portion 19 is easily cracked, and finishing with a file after breaking is almost unnecessary. Moreover, it is preferable to completely eliminate the uncut portion 19 by moving the circular saw blade 51 formed with the small cuts 11 and 12 in the vertical direction.

(B)主面内切り込み工程
搬送装置によりALCパネル1を搬送し、ALCパネル1の切り込み形成必要箇所が主面内切り込み装置40の丸鋸刃41の位置にまで来たときにALCパネル1を停止させる。駆動装置48により移動台47をパネル幅方向(搬送直角方向)に移動させることにより、軸着部44が2本の第二小口切り込み12の間のパネル部分の上下に位置するようにして、丸鋸刃41,42を切り込み形成必要箇所の上下に正確に位置させ、次のB1ステップとB2ステップとを行う。
(B) Main surface incision step The ALC panel 1 is conveyed by the conveying device, and the ALC panel 1 is moved when the cut required portion of the ALC panel 1 reaches the position of the circular saw blade 41 of the main surface incising device 40. Stop. By moving the moving table 47 in the panel width direction (perpendicular to the conveyance direction) by the driving device 48, the shaft mounting portion 44 is positioned above and below the panel portion between the two second fork cuts 12. The saw blades 41 and 42 are accurately positioned above and below the portion where cutting is necessary, and the following B1 step and B2 step are performed.

(B1)B1ステップ
駆動装置48により、図5に示すように、回転する下側の丸鋸刃42をALCパネル1の切り込み形成必要箇所に主面3からパネル厚さ方向(上方向)へ移動させ、パネル厚さtの中央付近まで又はそれ以上に作用させて、主面内切り込み14の一部(下部)を形成する。図5において横破線によるハッチングを付した範囲は、形成する主面内切り込み14のうち未だ切っていない未切部18である。同B1ステップでは、前記直径の設定により、丸鋸刃42の軸着部44がALCパネル1の主面3に当たることはない。
(B1) B1 Step As shown in FIG. 5, the rotating lower circular saw blade 42 is moved from the main surface 3 to the panel thickness direction (upward) from the main surface 3 to the position where the incision formation is required, as shown in FIG. Then, a part (lower part) of the in-plane incision 14 is formed by acting to the vicinity of the center of the panel thickness t or more. In FIG. 5, the hatched area by the horizontal broken line is an uncut portion 18 that has not been cut yet among the in-plane cuts 14 to be formed. In the B1 step, the shaft attachment portion 44 of the circular saw blade 42 does not hit the main surface 3 of the ALC panel 1 due to the setting of the diameter.

(B2)B2ステップ
続いて駆動装置48により、図6及び図7に示すように、前記下側の丸鋸刃42を下方へ退避させるとともに、回転する上側の丸鋸刃41をALCパネル1の切り込み形成必要箇所に主面2からパネル厚さ方向(下方向)へ移動させ、該丸鋸刃41の軸着部44が主面3に達するまで(パネル厚さtの全体に)作用させる。
(B2) B2 Step Next, as shown in FIGS. 6 and 7, the lower circular saw blade 42 is retracted downward by the driving device 48, and the rotating upper circular saw blade 41 is moved away from the ALC panel 1. It moves from the main surface 2 to the panel thickness direction (downward) to the notch formation required portion, and acts until the pivoting portion 44 of the circular saw blade 41 reaches the main surface 3 (over the entire panel thickness t).

同B2ステップの初期から、図6(a)に示すように、前記未切部18が減少していき、特に2本の第二小口切り込み12の間のパネル部分15における未切部18が優先的に減少する。そして、パネル部分15における未切部18が無くなると、2本の第二小口切り込み12と主面内切り込み14の一部とで切り離されたパネル部分15は自重で脱落するが(切り残し部19を完全に無くした場合や、切り残し部19が自然に割れた場合)、切り残し部19により脱落せずに止まっていることもある。   From the initial stage of the B2 step, as shown in FIG. 6 (a), the uncut portion 18 decreases, and in particular, the uncut portion 18 in the panel portion 15 between the two second fork cuts 12 has priority. Decrease. When the uncut portion 18 in the panel portion 15 disappears, the panel portion 15 cut off by the two second fork cuts 12 and a part of the main surface cut 14 drops off by its own weight (uncut portion 19). Or when the uncut portion 19 is naturally cracked), the uncut portion 19 may stop without falling off.

同B2ステップの途中においては、図6(b)に示すように、前記パネル部分15が脱落してできた空所を軸着部44が通過する。前記のとおりパネル部分15が止まっている場合には、軸着部44がパネル部分15を押し下げて切り残し部19を割るため、パネル部分15は脱落し、同様に軸着部44は空所を通過する。   In the middle of the B2 step, as shown in FIG. 6 (b), the pivoting portion 44 passes through a space formed by dropping the panel portion 15. When the panel portion 15 is stopped as described above, the pivot portion 44 pushes down the panel portion 15 and breaks the uncut portion 19, so that the panel portion 15 falls off, and similarly, the pivot portion 44 has a void. pass.

同B2ステップの終期においては、図7に示すように、第一小口切り込み11と第二小口切り込み12との間のパネル部分16における未切部18も大きく減少する。そして、軸着部44が主面3に達するときには、該未切部18が無くなって主面内切り込み14の全部が形成される。このとき、第一小口切り込み11と第二小口切り込み12と主面内切り込み14とで切り離されたパネル部分16は、自重で脱落するが(切り残し部19を完全に無くした場合や、切り残し部19が自然に割れた場合)、切り残し部19により脱落せずに止まっていることもある。しかし、前記のとおり切り残し部19はごく僅かなので、手又は工具で極めて容易に割ることができ、止まっているパネル部分16を容易に脱落させることができる。以上をもって、小口面4の中間部に開口切欠10が形成される。   At the end of the B2 step, as shown in FIG. 7, the uncut portion 18 in the panel portion 16 between the first fork cut 11 and the second fork cut 12 is also greatly reduced. When the pivoting portion 44 reaches the main surface 3, the uncut portion 18 is eliminated, and the entire main surface incision 14 is formed. At this time, the panel portion 16 cut off by the first fork notch 11, the second fork notch 12, and the main surface incision 14 falls off due to its own weight (when the uncut portion 19 is completely removed or left uncut). If the portion 19 is naturally cracked), the uncut portion 19 may be stopped without falling off. However, since the uncut portion 19 is very small as described above, it can be very easily broken with a hand or a tool, and the stopped panel portion 16 can be easily dropped. As described above, the opening notch 10 is formed in the middle portion of the fore edge surface 4.

この主面内切り込み14の形成時には、易削性のALCの切断のみならず難削性の補強鉄筋5の切断を伴うことになるが、丸鋸刃41,42は補強鉄筋5の切断に十分耐えて長寿命であり、また速度を落とす必要もなく高速で効率的に切断することができる。丸鋸刃41、42の切り込み速度は、特に限定されないが、1000〜6000mm/分程度の高速で行うことが効率上好ましく、その程度の高速でも補強鉄筋5を問題なく切断でき、ALCパネル1を損傷させることもない。   The formation of the in-plane incision 14 involves not only easy-cutting ALC cutting but also difficult-to-cut reinforcing reinforcing steel bars 5, but the circular saw blades 41 and 42 are sufficient for cutting the reinforcing steel bars 5. It can withstand long life, and can be cut efficiently at high speed without the need to slow down. Although the cutting speed of the circular saw blades 41 and 42 is not particularly limited, it is preferable in terms of efficiency to perform at a high speed of about 1000 to 6000 mm / min. The reinforcing reinforcing bar 5 can be cut without any problem even at such a high speed, and the ALC panel 1 can be cut. There is no damage.

[第二実施例]
次に、図8〜図12に示す第二実施例は、t=100mmのALCパネル1の小口面に、L=300mmの開口切欠を形成する例であり、前記のとおり直径D=220mm(Lより小さい)の丸鋸刃41,42を用いる。本実施例は、(A)小口切り込み工程のどこかに次のA3ステップを追加し、(B)主面内切り込み工程における前記B2ステップ後に次のB3ステップを追加する点において、第一実施例と相違するものであり、その他は第一実施例と共通である(共通部分については第一実施例の説明を援用する)。
[Second Example]
Next, the second embodiment shown in FIGS. 8 to 12 is an example in which an opening notch of L = 300 mm is formed on the small edge surface of the ALC panel 1 of t = 100 mm, and the diameter D = 220 mm (L Smaller circular saw blades 41 and 42 are used. In this embodiment, (A) the following A3 step is added somewhere in the small cut process, and (B) the next B3 step is added after the B2 step in the main surface cutting process, the first embodiment. The others are the same as those of the first embodiment (the description of the first embodiment is used for common portions).

(A)小口切り込み工程
(A1)A1ステップ
図8に示すとおり、第一実施例と同様にして、小口面の両端二位置(その間隔は300mm)から2本の第一小口切り込み11を形成する。
(A) Fork cut process (A1) A1 step As shown in FIG. 8, two first fork cuts 11 are formed from the two positions at both ends of the fork face (the interval is 300 mm) as in the first embodiment. .

(A2)A2ステップ
図8に示すとおり、第一実施例と同様にして、小口面の中間二位置から軸着部44の直径(70mm)以上に互いに離間(その間隔は80mm)した2本の第二小口切り込み12を形成する。但し、2本の第二小口切り込み12は片側(本例では左側)の第一小口切り込み11に寄せて形成し、よって左側で隣り合う第一小口切り込み11と第二小口切り込み12との間隔は70mm(丸鋸刃41の有効半径(75mm)以下)であるが、右側で隣り合う第一小口切り込み11と第二小口切り込み12との間隔は150mm(丸鋸刃41の有効半径(75mm)より大きい)ため、A3ステップを行う。後者(右側)の間隔が丸鋸刃41の有効半径より小さければ、A3ステップは不要である。
(A2) A2 step As shown in FIG. 8, in the same manner as in the first embodiment, two pieces spaced apart from each other by a diameter (70 mm) or more from the middle two positions of the facet portion (the interval is 80 mm). A second fork cut 12 is formed. However, the two second fork cuts 12 are formed close to the first fork cut 11 on one side (the left side in this example), so that the distance between the first fork cut 11 and the second fork cut 12 adjacent on the left side is 70 mm (the effective radius (75 mm) or less of the circular saw blade 41), but the distance between the first fork cut 11 and the second fork cut 12 adjacent on the right side is 150 mm (from the effective radius (75 mm) of the circular saw blade 41). Therefore, A3 step is performed. If the distance between the latter (right side) is smaller than the effective radius of the circular saw blade 41, the A3 step is unnecessary.

(A3)A3ステップ
駆動装置(図示略)により、図8に示すように、小口切り込み装置50の回転する丸鋸刃51を、小口面4における右側の第二小口切り込み12より右側の第一小口切り込み11へ向かって丸鋸刃41の有効半径(75mm)以下のピッチ(本例では50mm)で順に離間した二位置から、主面平行方向(本例ではパネル幅方向)へ相対移動させて、開口切欠(10)の深さ分まで作用させることにより、2本の第三小口切り込み13を補強鉄筋5の切断を伴って形成する。
(A3) A3 Step As shown in FIG. 8, the rotating saw blade 51 of the small notch cutting device 50 is moved by the drive device (not shown) to the right first small notch 12 on the right small fork notch 12 in the small edge surface 4. Relative movement from two positions sequentially spaced at a pitch (50 mm in this example) with an effective radius (75 mm) or less of the circular saw blade 41 toward the recess 11 in the main surface parallel direction (panel width direction in this example) By acting to the depth of the opening notch (10), two third fork cuts 13 are formed along with the cutting of the reinforcing reinforcing bars 5.

A1ステップとA2ステップとA3ステップの先後は問わないし、混然と行ってもよい。例えば、小口切り込み11,12,13をその横並び順に形成すること、すなわち本例では第一小口切り込み11→第二小口切り込み12→第二小口切り込み12→第三小口切り込み13→第三小口切り込み13→第一小口切り込み11の順で形成することもできる。   A1 step, A2 step and A3 step may be performed in a mixed manner. For example, the small cuts 11, 12, and 13 are formed in the horizontal order, that is, in this example, the first small cut 11 → second small cut 12 → second small cut 12 → third small cut 13 → third small cut 13 → The first cut edge 11 can be formed in this order.

(B)主面内切り込み工程
(B1)B1ステップ
図9に示すとおり、第一実施例と同様にして、主面内切り込み14の一部(下部)を形成する。
(B) Main surface incision step (B1) B1 step As shown in FIG. 9, a part (lower part) of the main surface incision 14 is formed in the same manner as in the first embodiment.

(B2)B2ステップ
図10及び図11に示すとおり、第一実施例と同様にして、主面内切り込み14の上部を形成し、パネル部分15及び左側のパネル部分16と、第一小口切り込み11と第二小口切り込み12と一つ目の第三小口切り込み13にまで至る主面内切り込み14とで切り離されたパネル部分17とを脱落させる。
(B2) B2 Step As shown in FIGS. 10 and 11, the upper portion of the main surface incision 14 is formed in the same manner as in the first embodiment, and the panel portion 15, the left panel portion 16, and the first fork notch 11 are formed. And the panel portion 17 cut off by the in-main-surface cut 14 extending to the second fork cut 12 and the first third fork cut 13.

(B3)B3ステップ
続いて駆動装置48により、図12に示すように、回転する丸鋸刃41を主面平行方向へ相対移動させて、前記主面内切り込み14を延ばしていき、その途中で、二つ目の第三小口切り込み13までのパネル部分17を脱落させる。丸鋸刃41が右側の第一小口切り込み11に至ったときに、図13に示すように、回転する丸鋸刃41パネル厚さ方向へ相対移動させ、パネル厚さの全体に作用させることにより、未切部18が無くなって主面内切り込み14の全部が形成され、残りのパネル部分17を脱落させる。以上をもって、小口面4の中間部に開口切欠10が形成される。
(B3) B3 Step Next, as shown in FIG. 12, the rotating circular saw blade 41 is relatively moved in the main surface parallel direction by the driving device 48 to extend the in-main surface incision 14. The panel portion 17 up to the second third fork cut 13 is dropped. When the circular saw blade 41 reaches the first fork cut 11 on the right side, as shown in FIG. 13, by rotating the circular saw blade 41 relative to the panel thickness direction, it acts on the entire panel thickness. Then, the uncut portion 18 disappears, and the entire in-plane cut 14 is formed, and the remaining panel portion 17 is dropped. As described above, the opening notch 10 is formed in the middle portion of the fore edge surface 4.

なお、本発明は前記実施例に限定されるものではなく、発明の趣旨から逸脱しない範囲で適宜変更して具体化することもできる。
(1)前記実施例では、補強鉄筋5(長手方向に延びる主筋)の切断を伴って小口切り込み11、12等を形成し、また補強鉄筋5(幅方向に延びる副筋)の切断を伴って主面内切り込み14を形成し、もって開口切欠10を形成した。補強鉄筋5(特に主筋)の側端は長手方向の小口面の近くに埋設されているため、小口切り込み11、12等を形成する際には、必ず補強鉄筋5(主筋)の切断を伴う。しかし、補強鉄筋5(特に副筋)は大きなピッチで埋設されているため、そのピッチよりも主面内切り込み10の長さLが小さい場合などには、主面内切り込み10が補強鉄筋5にかからないために、補強鉄筋5の切断を伴わない場合も十分にありうる。
In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized.
(1) In the said Example, the small cut | incision 11 and 12 grade | etc., Are formed with the cutting | disconnection of the reinforcing reinforcing bar 5 (main reinforcement extended in a longitudinal direction), and the cutting of the reinforcing reinforcement 5 (sub-bar extending in the width direction) is accompanied. A notch 14 in the main surface was formed, and thus an opening notch 10 was formed. Since the side ends of the reinforcing reinforcing bars 5 (especially the main reinforcing bars) are embedded near the small edge surface in the longitudinal direction, the reinforcing reinforcing bars 5 (main reinforcing bars) are always cut when the small cuts 11 and 12 are formed. However, since the reinforcing reinforcing bars 5 (particularly the secondary reinforcing bars) are embedded at a large pitch, when the length L of the main surface incision 10 is smaller than the pitch, the main surface incision 10 is formed in the reinforcing reinforcing bars 5. Since it is not applied, there may be a case where the reinforcing reinforcing bars 5 are not cut.

本発明の実施例で開口切欠を形成したALCパネルの斜視図である。It is a perspective view of the ALC panel which formed the opening notch in the Example of this invention. (a)はALCパネルの平面図、(b)は側面図である。(A) is a top view of an ALC panel, (b) is a side view. (a)は加工装置の平面図、(b)は正面図、(c)は丸鋸刃及びその軸着部の平面図である。(A) is a top view of a processing apparatus, (b) is a front view, (c) is a top view of a circular saw blade and its axial attachment part. 第一実施例の小口切り込み工程を示し、(a)は斜視図、(b)は平面図である。The small edge cutting process of a 1st Example is shown, (a) is a perspective view, (b) is a top view. 第一実施例の主面内切り込み工程のB1ステップを示し、(a)は斜視図、(b)は側面図である。The B1 step of the in-plane cutting process of a 1st Example is shown, (a) is a perspective view, (b) is a side view. 第一実施例の主面内切り込み工程のB2ステップを示し、(a)は初期の側面図、(b)は途中の側面図である。B2 step of the main surface incision process of a 1st Example is shown, (a) is an initial side view, (b) is a side view in the middle. 同じくB2ステップの終期の側面図である。It is a side view of the end of B2 step similarly. 第二実施例の小口切り込み工程を示し、(a)は斜視図、(b)は平面図である。The small edge cutting process of 2nd Example is shown, (a) is a perspective view, (b) is a top view. 第二実施例の主面内切り込み工程のB1ステップを示し、(a)は斜視図、(b)は側面図である。The B1 step of the in-plane cutting process of a 2nd Example is shown, (a) is a perspective view, (b) is a side view. 第二実施例の主面内切り込み工程のB2ステップを示し、(a)は初期の側面図、(b)は途中の側面図である。The B2 step of the main surface cutting process of 2nd Example is shown, (a) is an initial side view, (b) is a side view in the middle. 同じくB2ステップの終期の側面図である。It is a side view of the end of B2 step similarly. 第二実施例の主面内切り込み工程のB3ステップの途中までの側面図である。It is a side view to the middle of B3 step of the main surface cutting process of 2nd Example. 同じくB3ステップの終期の側面図である。It is a side view at the end of the same B3 step. 従来技術で開口切欠を形成したALCパネルの斜視図である。It is a perspective view of the ALC panel which formed the opening notch by the prior art.

符号の説明Explanation of symbols

1 ALCパネル
2 主面(表面)
3 主面(裏面)
4 小口面
5 補強鉄筋
6 枠体
7 スペーサ
10 開口切欠
11 第一小口切り込み
12 第二小口切り込み
13 第三小口切り込み
14 主面内切り込み
15 パネル部分
16 パネル部分
17 パネル部分
18 未切部
19 切り残し部
30 搬送装置
40 主面内切り込み装置
41 丸鋸刃
42 丸鋸刃
43 回転軸
44 軸着部
50 小口切り込み装置
51 丸鋸刃
1 ALC panel 2 Main surface (surface)
3 Main surface (back surface)
4 Small edge surface 5 Reinforcing bar 6 Frame 7 Spacer 10 Opening notch 11 First small edge notch 12 Second small edge notch 13 Third small edge notch 14 Main surface incision 15 Panel portion 16 Panel portion 17 Panel portion 18 Uncut portion 19 Uncut Section 30 Conveying device 40 In-plane incising device 41 Circular saw blade 42 Circular saw blade 43 Rotating shaft 44 Shaft mounting portion 50 Small incision device 51 Circular saw blade

Claims (6)

補強鉄筋が埋設されたALCパネルの小口面の中間部に開口切欠を形成する方法であって、次の(A)小口切り込み工程と、(B)主面内切り込み工程とを含むALCパネルの開口切欠の形成方法。
(A1)回転する丸鋸刃を前記小口面における開口切欠の両端となる両端二位置から主面平行方向へ相対移動させて、2本の第一小口切り込みを前記補強鉄筋の切断を伴って形成するA1ステップと、
(A2)回転する丸鋸刃を前記小口面の前記両端二位置の中間における後記B2ステップ用の丸鋸刃の軸着部の直径以上に互いに離間した中間二位置から主面平行方向へ相対移動させて、2本の第二小口切り込みを前記補強鉄筋の切断を伴って形成するA2ステップと
を含む(A)小口切り込み工程。
(B1)回転する丸鋸刃をALCパネルの一主面からパネル厚さ方向へ相対移動させ、パネル厚さの中央付近まで又はそれ以上に作用させるB1ステップと、
(B2)回転する丸鋸刃をALCパネルの他主面からパネル厚さ方向へ相対移動させ、該丸鋸刃の軸着部が一主面に達するまで作用させるB2ステップとにより、
主面内切り込みを形成し、前記B2ステップの途中で、2本の前記第二小口切り込みと前記主面内切り込みとで切り離されたパネル部分を脱落させてできる空所を前記軸着部が通過する(B)主面内切り込み工程。
A method of forming an opening notch in an intermediate portion of a small edge surface of an ALC panel in which a reinforcing reinforcing bar is embedded, and includes the following (A) small edge cutting step and (B) main surface cutting step. Method for forming notches.
(A1) A rotating circular saw blade is relatively moved in the principal surface parallel direction from two positions at both ends, which are both ends of the opening notch in the small edge surface, and two first small edge cuts are formed along with the cutting of the reinforcing reinforcing bars. A1 step to
(A2) Relative movement of the rotating circular saw blade from two intermediate positions separated from each other by more than the diameter of the shaft attachment portion of the circular saw blade for B2 step in the middle of the two positions on both ends of the small facet in the parallel direction of the main surface And (A) a small incision step including an A2 step of forming two second small incisions with the cutting of the reinforcing reinforcing bars.
(B1) A B1 step in which a rotating circular saw blade is relatively moved from one main surface of the ALC panel in the panel thickness direction, and acts to the vicinity of the center of the panel thickness or more.
(B2) B2 step of causing the rotating circular saw blade to move relative to the panel thickness direction from the other main surface of the ALC panel, and acting until the axially attached portion of the circular saw blade reaches one main surface,
Form a main surface incision, and the shaft attachment part passes through a space formed by dropping off the panel part separated by the two second fork cuts and the main surface incision in the middle of the B2 step. (B) In-plane cutting process.
前記B1ステップ用の丸鋸刃の直径Dが、次式の範囲にある請求項1記載のALCパネルの開口切欠の形成方法。
[t/有効直径率]≦D≦[a+(L2/4a)]
ここで、有効直径率は(D−丸鋸刃の無効中心部の直径)/D
tはALCパネルのパネル厚さ
aはt/2
Lは主面内切り込みの長さ
The method for forming an opening notch in an ALC panel according to claim 1, wherein the diameter D of the circular saw blade for the B1 step is in the range of the following formula.
[T / effective diameter ratio] ≦ D ≦ [a + (L 2 / 4a)]
Here, the effective diameter ratio is (D−the diameter of the ineffective central portion of the circular saw blade) / D
t is the panel thickness of the ALC panel
a is t / 2
L is the length of the cut in the main surface
前記B2ステップ用の丸鋸刃の直径Dが、次式の範囲にある請求項1又は2記載のALCパネルの開口切欠の形成方法。
[t/有効直径率]≦D≦L
ここで、有効直径率は(D−丸鋸刃の無効中心部の直径)/D
tはALCパネルのパネル厚さ
Lは主面内切り込みの長さ
The method for forming an opening notch in an ALC panel according to claim 1 or 2, wherein a diameter D of the circular saw blade for the B2 step is in the range of the following formula.
[T / effective diameter ratio] ≦ D ≦ L
Here, the effective diameter ratio is (D−the diameter of the ineffective central portion of the circular saw blade) / D
t is the panel thickness of the ALC panel
L is the length of the cut in the main surface
前記B2ステップ用の丸鋸刃の直径Dが主面内切り込みの長さLとほぼ等しいとき、前記B2ステップにより、前記第一小口切り込みと前記第二小口切り込みと前記主面内切り込みとで切り離されたパネル部分も脱落させて、前記小口面の中間部に開口切欠を形成する請求項3記載のALCパネルの開口切欠の形成方法。   When the diameter D of the circular saw blade for the B2 step is substantially equal to the length L of the main surface incision, the B2 step separates the first forehead incision, the second forehead incision, and the incision in the main surface. 4. The method of forming an opening notch in an ALC panel according to claim 3, wherein the panel notch is also dropped to form an opening notch in an intermediate portion of the fore edge surface. 前記B2ステップ用の丸鋸刃の直径Dが主面内切り込みの長さLより小さいとき、前記(B)主面内切り込み工程における前記B2ステップ後に、
(B3)回転する丸鋸刃を主面平行方向へ相対移動させて、前記主面内切り込みを延ばしていき、前記第一小口切り込みに至ったときにパネル厚さ方向へ相対移動させ、パネル厚さの全体に作用させるB3ステップ
を行うことにより、前記第一小口切り込みと前記第二小口切り込みと前記主面内切り込みとで切り離されたパネル部分を脱落させて、前記小口面の中間部に開口切欠を形成する請求項3記載のALCパネルの開口切欠の形成方法。
When the diameter D of the circular saw blade for the B2 step is smaller than the length L of the main surface incision, after the B2 step in the (B) main surface incision step,
(B3) The rotating circular saw blade is relatively moved in the main surface parallel direction to extend the cut in the main surface, and when the first fork cut is reached, the circular saw blade is relatively moved in the panel thickness direction to obtain the panel thickness. By performing the B3 step that acts on the entire length, the panel portion separated by the first fork cut, the second fork cut and the main surface cut is dropped, and an opening is formed at the middle of the fork face. 4. The method for forming an opening notch in an ALC panel according to claim 3, wherein the notch is formed.
前記(A)小口切り込み工程では、
(A3)回転する丸鋸刃を前記小口面における、前記第二小口切り込みより前記第一小口切り込みへ向かって前記B3ステップ用の丸鋸刃の有効半径以下のピッチで離間した、少なくとも一位置から主面平行方向へ相対移動させて、少なくとも1本の第三小口切り込みを前記補強鉄筋の切断を伴って形成するA3ステップ
を行う請求項5記載のALCパネルの開口切欠の形成方法。
In the (A) fork cutting process,
(A3) The rotating circular saw blade is separated from at least one position on the small edge surface at a pitch equal to or less than the effective radius of the circular saw blade for the B3 step from the second small edge cut toward the first small hole cut. 6. The method of forming an opening notch in an ALC panel according to claim 5, wherein the A3 step of forming at least one third fork cut with the cutting of the reinforcing reinforcing bar is performed by relatively moving in a direction parallel to the main surface.
JP2006031771A 2006-02-08 2006-02-08 Method for forming opening notch in ALC panel Expired - Fee Related JP4657117B2 (en)

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Publication number Priority date Publication date Assignee Title
CN102189610A (en) * 2011-04-13 2011-09-21 泗阳浙阳新型保温防水材料有限公司 Cutting machine

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JP6737171B2 (en) * 2016-12-28 2020-08-05 信越化学工業株式会社 Multi-cutting method for rare earth sintered magnets

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JP2000127101A (en) * 1998-10-26 2000-05-09 Misawa Homes Co Ltd Plate cutting apparatus
JP2001121530A (en) * 1999-10-29 2001-05-08 Sekisui House Ltd Apparatus for cutting plaster board
JP2004218422A (en) * 2002-12-25 2004-08-05 Nippon Tetsutou Kogyo Kk Removal method for existing expansion apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102189610A (en) * 2011-04-13 2011-09-21 泗阳浙阳新型保温防水材料有限公司 Cutting machine

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