JP2000233396A5 - - Google Patents

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Publication number
JP2000233396A5
JP2000233396A5 JP1999319952A JP31995299A JP2000233396A5 JP 2000233396 A5 JP2000233396 A5 JP 2000233396A5 JP 1999319952 A JP1999319952 A JP 1999319952A JP 31995299 A JP31995299 A JP 31995299A JP 2000233396 A5 JP2000233396 A5 JP 2000233396A5
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JP
Japan
Prior art keywords
punch
sheet material
punching
tip
cam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1999319952A
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Japanese (ja)
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JP2000233396A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP11319952A priority Critical patent/JP2000233396A/en
Priority claimed from JP11319952A external-priority patent/JP2000233396A/en
Publication of JP2000233396A publication Critical patent/JP2000233396A/en
Publication of JP2000233396A5 publication Critical patent/JP2000233396A5/ja
Pending legal-status Critical Current

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Description

【特許請求の範囲】
【請求項1】 幅方向に複数個配置されたパンチと、パンチと協動して穿孔する複数個のダイスと、前記パンチを連結して幅方向に差し渡されたタイバーと、該タイバーに所定の間隔をもって設置され、前記タイバーをパンチの穿孔方向および反穿孔方向に駆動する複数のカムと、幅方向に差し渡され前記カムを回動するカム軸を有することを特徴とするシート材穿孔装置。
【請求項2】 タイバーは、断面係数を増加する如く、断面が折り曲げられた形状を有することを特徴とする請求項1に記載のシート材穿孔装置。
【請求項3】 パンチは回り止め手段を有し、該パンチの先端の外周は、シート材の進行方向に対してパンチ先端を逃がす如く尖っている請求項1または2に記載のシート材穿孔装置。
【請求項4】 パンチ先端は、底部がV字状となるキリ欠きを有することを特徴とする請求項1ないし3のいずれかに記載のシート材穿孔装置。
【請求項5】 パンチによる穿孔は、せん断力が最大を経て低下した後終了するものである請求項1ないし4のいずれかに記載のシート材穿孔装置。
【請求項6】 カムは偏心カムである請求項1ないし5のいずれかに記載のシート材穿孔装置。
【請求項7】 タイバーに連結された複数のパンチは、穿孔タイミングが異なることを特徴とする請求項1ないしのいずれかに記載のシート材穿孔装置。
[Claims]
1. A plurality of punches arranged in the width direction, a plurality of dies for punching in cooperation with the punches, a tie bar connected to the punches and delivered in the width direction, and a predetermined tie bar. A sheet material punching device having a plurality of cams which are installed at intervals of the above and drive the tie bar in the punch punching direction and the anti-punching direction, and a cam shaft which is spread in the width direction and rotates the cam. ..
2. The sheet material perforating device according to claim 1, wherein the tie bar has a shape in which the cross section is bent so as to increase the cross section coefficient.
3. The sheet material punching device according to claim 1 or 2, wherein the punch has a detenting means, and the outer circumference of the tip of the punch is sharp so as to allow the punch tip to escape in the traveling direction of the sheet material. ..
4. The sheet material punching device according to claim 1, wherein the punch tip has a V-shaped notch at the bottom.
5. The sheet material punching device according to claim 1, wherein the punching is terminated after the shearing force has decreased after reaching the maximum.
6. A cam sheet punching device according to any one of claims 1 to an eccentric cam 5.
7. A plurality of punches which are connected to the tie bar, sheet punching device according to any one of claims 1 to 6, characterized in that the perforation timing is different.

また、パンチに設けるキリ欠きを底部がV字状に形成することによって、パンチの負荷の変動することを抑えることができる。
すなわち、パンチがパンチの軸心方向に上下運動する本発明のシート材穿孔装置では、所要せん断力が最大を経た後、徐々に零に達するものがよいことがわかった。先端の谷状面に丸みがあるものでは、所要せん断力が最大に達した状態で突然零になる。
この時、駆動系統内等に弾性変形の形で貯えられていたエネルギが一気に放出されるが、この際、ガタないしバックラッシュの部分で騒音が発生し易いことがわかった。V字状のパンチは、零になる直前の所要せん断力が小さいから、放出エネルギが小さく、静粛性が良い。
なお、V字状は図6(a)に示すような一直線に限らず、(b)に示す曲線や(c)に示す折れ線等、急峻なV字状に近い形状であれば、同様の効果が得られる
Further, by forming the notch provided in the punch in a V shape at the bottom, it is possible to suppress fluctuations in the load of the punch.
That is, it was found that in the sheet material punching device of the present invention in which the punch moves up and down in the axial direction of the punch, it is preferable that the required shearing force gradually reaches zero after reaching the maximum. If the valley surface at the tip is rounded, it suddenly becomes zero when the required shear force reaches the maximum.
At this time, the energy stored in the drive system in the form of elastic deformation is released at once, but at this time, it was found that noise is likely to be generated in the backlash or backlash part. Since the V-shaped punch requires a small shearing force immediately before it becomes zero, the emitted energy is small and the quietness is good.
The V-shape is not limited to a straight line as shown in FIG. 6 (a), and the same effect can be obtained if the shape is close to a steep V-shape such as a curve shown in (b) or a polygonal line shown in (c). Can be obtained

また、本実施例では片方のカム3を他方に対して位相差を設けて固定したが、両フランジ部に形成されたパンチピンを挿通する貫通長孔の高さ位置を0.5mmずつ違えることで、パンチとダイスの待機状態でのエッジ間隔を違え、穿孔の時期をずらし負荷トルクを平均化してもよい。その場合には両側のカムに位相差を設けて固定する必要はなくなる。
なお、両フランジ部とパンチとの間のパンチピン上には騒音防止用のゴムブッシュ10を組み込んだ。また、パンチ5は、その先端面を字形谷形状の面で構成され、その先端の矢筈状突出部同士を結ぶ方向をカム軸2の方向とされている。すなわち、シート材の進行方向に対してパンチ先端を逃がす如く尖っている状態となっている。
Further, in this embodiment, one cam 3 is fixed with a phase difference with respect to the other, but the height position of the through elongated hole through which the punch pin formed in both flanges is inserted is different by 0.5 mm. , The edge spacing in the standby state of the punch and the die may be different, the drilling timing may be staggered, and the load torque may be averaged. In that case, it is not necessary to provide a phase difference between the cams on both sides and fix them.
A rubber bush 10 for noise prevention was incorporated on the punch pin between both flange portions and the punch. Further, the tip surface of the punch 5 is formed of a V- shaped valley-shaped surface, and the direction connecting the arrowhead-shaped protrusions at the tip thereof is the direction of the cam shaft 2. That is, it is in a state of being sharp so as to allow the tip of the punch to escape in the traveling direction of the sheet material.

図5は、従来(A)および本発明(B)について、穿孔反力とカム軸2に作用する曲げモーメントを説明する線図である。
今、簡単のため、3孔用の左右対称の装置を想定し、穿孔反力は、各パンチそれぞれに順に一瞬間だけ加わるものと仮定し、各寸法関係位置を図5に示す通りとすると、従来の装置(A)でカム軸2に加わる最大曲げモーメントは、
M=F・n/4 (中央のパンチで穿孔するとき、該中央で)
これに対し、本発明の装置でカム軸2に加わる最大曲げモーメントは、
M=F・b(n−a)・/n(左パンチで穿孔するとき、左カム中心で)
となる。
FIG. 5 is a diagram for explaining the drilling reaction force F and the bending moment acting on the cam shaft 2 for the conventional (A) and the present invention (B).
Now, for the sake of simplicity, assuming a symmetrical device for 3 holes, it is assumed that the drilling reaction force F is applied to each punch in order for only one moment, and the positions of each dimensional relationship are as shown in FIG. Then, the maximum bending moment applied to the cam shaft 2 in the conventional device (A) is
M = F · n / 4 (when punching with the center punch, at the center)
On the other hand, the maximum bending moment applied to the camshaft 2 in the apparatus of the present invention is
M = F・ b (n−a) ・ / n (when punching with the left punch, at the center of the left cam)
Will be.

JP11319952A 1998-12-18 1999-11-10 Sheet material boring device Pending JP2000233396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11319952A JP2000233396A (en) 1998-12-18 1999-11-10 Sheet material boring device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP35990698 1998-12-18
JP10-359906 1998-12-18
JP11319952A JP2000233396A (en) 1998-12-18 1999-11-10 Sheet material boring device

Publications (2)

Publication Number Publication Date
JP2000233396A JP2000233396A (en) 2000-08-29
JP2000233396A5 true JP2000233396A5 (en) 2006-04-27

Family

ID=26569891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11319952A Pending JP2000233396A (en) 1998-12-18 1999-11-10 Sheet material boring device

Country Status (1)

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JP (1) JP2000233396A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264593B1 (en) * 1999-01-29 2001-07-24 Agfa Corporation Punch assembly having a positive punch retraction mechanism for an internal drum imagesetter
EP1561552A4 (en) 2002-10-21 2010-11-24 Daido Kogyo Kk Boring device
JP4950566B2 (en) * 2005-09-12 2012-06-13 株式会社リコー Drilling device, image forming system
KR101017614B1 (en) * 2008-09-02 2011-02-28 디에스글로벌 (주) Punching apparatus
JP5326740B2 (en) 2009-03-30 2013-10-30 コニカミノルタ株式会社 Punching device, post-processing device and image forming system
KR101078481B1 (en) 2009-07-06 2011-10-31 임광택 Punching device
KR101101764B1 (en) * 2011-01-28 2012-01-05 디에스글로벌 (주) Punching apparatus
JP2015020217A (en) * 2013-07-16 2015-02-02 株式会社セーコウ Sheet punching device

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