JPS6015680Y2 - Drilling device for sheets - Google Patents

Description

【考案の詳細な説明】 本考案は薄い軟質性シート類例えば布を裏張りした合成
樹脂性シートに多数の小径穴を連続して順次打抜き加工
する装置において、上型および下型の温度上昇差による
型の芯ずれを少くして型精度を改良した装置に関する。[Detailed description of the invention] This invention uses a device that sequentially punches a large number of small diameter holes in a thin flexible sheet such as a cloth-lined synthetic resin sheet. This invention relates to a device that improves mold accuracy by reducing mold misalignment.

本考案は同出願人が先に提案した特願昭５２−９４０２
吋の改良に係る。This invention was originally proposed by the same applicant in Japanese Patent Application No. 52-9402.
Regarding the improvement of 吋.

前記特許願はその明細書に記載した通りポンチによって
打抜かれた鋼板を敷板として使用するシート類の穴あけ
装置である。As described in the specification, the patent application is a sheet punching device that uses a steel plate punched with a punch as a bottom plate.

この装置においてポンチと下型穴との嵌合隙間が大きい
と鋼板の打抜き加工は周辺部の曲げ変形を起こし第５図
に示すようにポンチにて打抜かれた鋼板の穴はその周囲
がだれ尖鋭さを欠くものであった。In this device, if the fitting gap between the punch and the lower die hole is large, the punching process of the steel plate will cause bending deformation of the peripheral part, and as shown in Figure 5, the hole in the steel plate punched with the punch will have a sharp edge around it. It lacked quality.

この状態において布を裏張りした合成樹脂性シートの加
工を行うとポンチ先端がシート裏面に突出する際にポン
チ外周寄りに位置する繊維はポンチから逃げて伸びこれ
を完全に切断することができなかった。When processing a synthetic resin sheet lined with cloth in this state, when the tip of the punch protrudes from the back of the sheet, the fibers located near the outer periphery of the punch escape from the punch and stretch, making it impossible to completely cut them. Ta.

このような場合加工されたシートは繊維がシート面から
剥離し外観上美麗さを欠き商品価値を損うものであった
、更に穴あけ加工時には型の各摺動部材間の摩擦熱並び
に加工熱が発生するため本体にじかに取付られる下型に
比べ上型はその熱容量が小さいため下型より温度が高く
なる。In such cases, the fibers of the processed sheet would peel off from the sheet surface, resulting in a lack of aesthetic appearance and loss of commercial value.Furthermore, during the drilling process, frictional heat between each sliding member of the mold and processing heat were generated. Since the heat capacity of the upper mold is smaller than that of the lower mold, which is directly attached to the main body, the temperature of the upper mold is higher than that of the lower mold.

このため上型、下型の幅方向には温度差による芯ずれが
顕著に現われ下型穴型はポンチ径に対し前記芯ずれ量を
含んだ値にする必要がある。For this reason, misalignment due to the temperature difference appears significantly in the width direction of the upper die and the lower die, and the lower die hole must be set to a value that includes the amount of misalignment with respect to the punch diameter.

従来のものは上型下型とも幅方向に一体であり型の両端
部における芯ずれは大きく現われ必然的に下型穴を大き
くしていたため鋼板の穴周辺部のだれを防ぐことができ
なかった。In the conventional model, the upper and lower molds were integrated in the width direction, and the misalignment at both ends of the mold appeared large, and the hole in the lower mold was inevitably enlarged, making it impossible to prevent the steel plate from sagging around the hole. .

そこで本考案は上記にかんがみ上下動する摺動体および
その摺動機構を幅方向に複数個並設し各摺動体には各要
素を中心に対してシート材の幅方向に対称に構成したそ
れぞれ上型を設は固定した受台上には上型に相対応して
分割された下型を設は上型下型間の温度差によるポンチ
と下型穴の芯ずれ量を小さくポンチと下型穴との嵌合い
隙間を小さくしたものである。Therefore, in view of the above, the present invention has been developed by arranging a plurality of sliding bodies that move up and down and their sliding mechanisms in parallel in the width direction, and each sliding body has a top plate that is configured symmetrically in the width direction of the sheet material with each element as the center. On the pedestal on which the mold is fixed, there is a lower mold that is divided into parts corresponding to the upper mold, and this reduces the amount of misalignment between the hole of the punch and the lower mold due to the temperature difference between the upper mold and the lower mold. It has a smaller fitting gap with the hole.

本考案の実施態様を図面について説明する。Embodiments of the present invention will be described with reference to the drawings.

１は本体で両側にコラム２とその間の底部に受台３およ
びその上部に断面■形で適宜箇所に複数のリブを設けた
ビーム４にて構成されている。Reference numeral 1 denotes a main body, which is composed of columns 2 on both sides, a pedestal 3 at the bottom between them, and a beam 4 on top thereof, which has a square cross section and has a plurality of ribs provided at appropriate locations.

５は伝動軸で両端をコラム２に軸承され端部には図示せ
ぬモータにより回転を伝達されるプーリ６、そして前記
軸承部間には等間隔に整数Ｎ個の第１の歯車７が止着さ
れている。Reference numeral 5 denotes a transmission shaft, which is supported at both ends by the column 2, and has a pulley 6 at its end to which rotation is transmitted by a motor (not shown), and an integral number N of first gears 7 are stopped at equal intervals between the shaft bearings. It is worn.

８は慣性軸でコラム２に軸承され第１の歯車７の１つと
噛合う第２の歯車９およびその両側にフライホイール１
０が止着されている。8 is an inertia shaft which is supported by the column 2 and meshes with one of the first gears 7, and a flywheel 1 on both sides of the second gear 9.
0 is fixed.

１１はＮ個のクランク軸で各々がビーム４上に複数個配
設された支持部材１２に両端を軸承されジャーナル部に
は第１の歯車７と噛合う第３の歯車１３が止着されピン
部にはコンロッド１４の一端が枢着されている。Reference numeral 11 denotes N crankshafts, each of which is supported at both ends by a plurality of support members 12 disposed on the beam 4, and a third gear 13 that meshes with the first gear 7 is fixed to the journal portion, and a pin is attached to the journal portion. One end of a connecting rod 14 is pivotally attached to the portion.

以下記述するものは総てＮ個設けられるため個数を略す
。The numbers described below are omitted because there are N in total.

１５はブラケットで削設されたあり溝形案内面を上下方
向にしてビーム４のウェブ面に前記クランク軸１１に対
応して等間隔に固着されている。15 are fixed to the web surface of the beam 4 at equal intervals corresponding to the crankshaft 11 with dovetail guide surfaces cut by brackets facing upward and downward.

１６は摺動体で各ブラケット１５の案内面に沿って上下
に摺動可能に設けられ前記コンロッド１４の他端をピン
１７にて枢着している。A sliding member 16 is provided so as to be able to slide up and down along the guide surface of each bracket 15, and is pivotally connected to the other end of the connecting rod 14 by a pin 17.

このためクランク軸１１の回転運動はコンロッド１４を
介して摺動体１６の上下運動に変換される。Therefore, the rotational movement of the crankshaft 11 is converted into the vertical movement of the sliding body 16 via the connecting rod 14.

１８は上型で各摺動体１６の下面に水平に設けられてい
る。Reference numeral 18 denotes an upper mold, which is provided horizontally on the lower surface of each sliding body 16.

該上型１８は後記押え板を挾んで摺動体１６に固着され
た板状の保持板１９、該保持板１９に垂直方向に先端切
刃を下向きにして植設された小径な複数本のポンチ２０
、該ポンチ２０のつば部を保持板１９に押さえ動きを規
制する押え板２１、摺動体１６の四隅に上方より螺着さ
れた案内棒２２にて案内支持され上下に摺動可能でポン
チ２０の曲がりを防ぐためこれを案内するストリッパプ
レート２３、頭のつば部が保持板１９に係合しストリッ
パプレート２３を吊下げるため該ストリッパプレートの
四隅に螺着されたボルト２４、保持板１９に対してスト
リッパプレート２３を下方に付勢する圧縮ばね２５より
構成されている。The upper mold 18 includes a plate-shaped holding plate 19 fixed to the sliding body 16 with a presser plate (described later) in between, and a plurality of small-diameter punches installed vertically on the holding plate 19 with their cutting edges facing downward. 20
The punch 20 is guided and supported by a retaining plate 21 that presses the collar of the punch 20 against a retaining plate 19 and restricts its movement, and guide rods 22 screwed onto the four corners of the sliding body 16 from above, and is slidable up and down. The stripper plate 23 guides the stripper plate to prevent bending, the collar of the head engages the retaining plate 19, and bolts 24 are screwed into the four corners of the stripper plate to suspend the stripper plate 23, and the retaining plate 19 It is composed of a compression spring 25 that urges the stripper plate 23 downward.

２６は下型で受台３上に各上型１８に相対応して設置さ
れている。A lower mold 26 is installed on the pedestal 3 in correspondence with each upper mold 18.

下型２６はポンチ２０と対応する位置にポンチ径より僅
か大径の下型穴２７を穿設され受台３に固着されたベッ
ドプレート２８、該ベッドプレート２８の上面に載置さ
れた薄い鋼板２９、該鋼板２９をベッドプレート２Ｂに
固着する固着片３０より構成されている。The lower mold 26 includes a bed plate 28 which has a lower mold hole 27 with a diameter slightly larger than the punch diameter at a position corresponding to the punch 20 and is fixed to the pedestal 3, and a thin steel plate placed on the upper surface of the bed plate 28. 29, it is composed of a fixing piece 30 that fixes the steel plate 29 to the bed plate 2B.

尚上型１８および下型２６はともに平行四辺形をなして
いるがこれは打抜穴の位置から決められたものであり一
般には加工の容易さを考慮長方形のものが用いられる。The upper die 18 and the lower die 26 both have a parallelogram shape, but this is determined by the position of the punched hole, and rectangular shapes are generally used in consideration of ease of processing.

本体１の両側（第１図左右端）には上型の上下動きに同
期してシート３１を第１図左から右へ間歇ピッチ送りす
る図示せぬ送り装置が設けられている。A feeding device (not shown) is provided on both sides of the main body 1 (left and right ends in FIG. 1) for feeding the sheet 31 intermittently from left to right in FIG. 1 in synchronization with the vertical movement of the upper mold.

シート３１は片面に繊維３２を貼付けられたシートに限
定されるものでなく単一材料にて作られたものでもよい
。The sheet 31 is not limited to a sheet with fibers 32 pasted on one side, but may be made of a single material.

次に作用について説明する。Next, the effect will be explained.

今、薄い鋼板２９は穴加工されていないものであるとす
る。Assume now that the thin steel plate 29 is not made with holes.

まず上型１８、下型２６間にシート３１を挿入せず図示
せぬ前記モータを回転させるとプーリ６、伝達軸５、第
１の歯車７、第３の歯車１３、クランク軸１１、コンロ
ッド１４を介して摺動体１６並び上型１８が上下動され
ポンチ２０にて鋼板２９の打抜き穴加工が行なわれる。First, when the motor (not shown) is rotated without inserting the seat 31 between the upper die 18 and the lower die 26, the pulley 6, transmission shaft 5, first gear 7, third gear 13, crankshaft 11, connecting rod 14 The sliding body 16 and the upper die 18 are moved up and down via the punch 20, and a hole is punched in the steel plate 29 using the punch 20.

次にシート３１が送り込まれ上記一連の駆動機構の動き
に合わせて間歇ピッチ送りされ穴あけ加工が行なわれる
。Next, the sheet 31 is fed and fed at an intermittent pitch in accordance with the movement of the series of drive mechanisms described above to perform hole drilling.

その詳細な動きはまず摺動体１６が下降され、それにつ
れてストリッパプレート２３がシート３１を下型２６に
押しつける。The details of the movement are as follows: First, the sliding body 16 is lowered, and the stripper plate 23 presses the sheet 31 against the lower die 26 as the slider 16 is lowered.

次いでポンチ２０がシート３１を上方から押圧しながら
鋼板２９の穴にのぞむがその途中にポンチ２０の先端切
刃と鋼板２９の穴縁間にてシート３１がせん断されポン
チ形状と同一のシート材料および裏面繊維が打抜かれる
。Next, the punch 20 presses the sheet 31 from above into the hole in the steel plate 29, but in the middle of the process, the sheet 31 is sheared between the tip cutting edge of the punch 20 and the hole edge of the steel plate 29, and the sheet material is the same as the shape of the punch. The back fibers are punched out.

ポンチ２０が最下点に達した後まずポンチ２０が上昇し
その先端がシート３１を抜は出た後にストリッパプレー
ト２３が上昇する。After the punch 20 reaches the lowest point, the punch 20 first rises, and after its tip passes through the sheet 31, the stripper plate 23 rises.

次いでシート３１が１ピッチ分送られて１サイクルを完
了し以後上記作用を繰返す。Next, the sheet 31 is fed by one pitch to complete one cycle, and the above operation is repeated thereafter.

上記サイクルは高速で行なわれその途中摺動体１６と上
型１８においてはポンチ２０とシート３１、ポンチ２０
と鋼板２９、ポンチ２０とストリッパプレート２３、案
内棒２２とストリッパプレート２３、コンロッド１４と
ピン１７、ブラケット１５と摺動体１６との各部材間に
摩擦熱が発生する。The above cycle is performed at high speed, and during the cycle, the punch 20, the sheet 31, the punch 20,
Frictional heat is generated between each member: and the steel plate 29, the punch 20 and the stripper plate 23, the guide rod 22 and the stripper plate 23, the connecting rod 14 and the pin 17, and the bracket 15 and the sliding body 16.

一方下型２６側はポンチ２０と鋼板２９による摩擦熱を
発生する。On the other hand, on the lower mold 26 side, frictional heat is generated by the punch 20 and the steel plate 29.

前記各摩擦熱は大気へ放熱ならびに本体１に伝熱される
が上型１８は発生熱量が下型２６より多くまた下型２６
が直接接している本体１の熱容量が大きいため上型１８
は下型２６より温度が高くなる。The frictional heat is radiated to the atmosphere and transferred to the main body 1, but the amount of heat generated in the upper mold 18 is greater than that in the lower mold 26.
The upper mold 18 has a large heat capacity because the main body 1 is in direct contact with the
has a higher temperature than the lower mold 26.

このため両者の熱変位量に差が生じポンチ２０と下型穴
２７間には芯ずれが起こる。For this reason, there is a difference in the amount of thermal displacement between the two, and misalignment occurs between the punch 20 and the lower die hole 27.

又鋼板２９はベッドプレート２８と同じ温度でありその
穴は前記芯ずれにつれて拡大される。Further, the steel plate 29 is at the same temperature as the bed plate 28, and the hole thereof enlarges as the center of the plate 29 is shifted.

各摺動体１６および上型１８は支持部がその中央に設け
られ保持板１９、打抜用ポンチ２０、ストリッパプレー
ト２３、案内棒２２、圧縮ばね２５をそれぞれ中心に対
して対称な位置となるよう配設した）め上型１８の熱変
形中立点は各型の中央になり最大芯ずれは各型の両端に
起りその量は（中立点から両端ポンチ２０までの距離１
）×（温度差）×（線膨張係数）で表わされる。Each sliding body 16 and upper die 18 are provided with a supporting part at the center, and the holding plate 19, punch 20, stripper plate 23, guide rod 22, and compression spring 25 are arranged in symmetrical positions with respect to the center. The neutral point of thermal deformation of the upper die 18 (disposed) is at the center of each die, and the maximum misalignment occurs at both ends of each die, and the amount is (distance 1 from the neutral point to the punches 20 at both ends)
) x (temperature difference) x (linear expansion coefficient).

本考案は上下の型をＮ個分割して設けたため各型の幅は
一体型に比べ狭くその芯ずれ量が小さい。In the present invention, the upper and lower molds are divided into N parts, so the width of each mold is narrower than that of an integrated mold, and the amount of misalignment between them is small.

また上型１８の熱を伝熱されるビーム４はその表面積を
広くして形成されているため放熱効果がよくビーム４自
身の熱変位量は小さく前記芯ずれの拡大を防止している
。Further, since the beam 4 to which the heat of the upper die 18 is transferred is formed with a large surface area, the heat dissipation effect is good and the amount of thermal displacement of the beam 4 itself is small, preventing the expansion of the misalignment.

上記の通り本考案はポンチによって打抜かれた鋼板を敷
板として使用するシート類の穴あけ装置において上型と
下型をそれぞれ幅方向に複数個分割し且上型の各要素を
釣合いのとれた位置で中心に対して対称に設は熱変位に
よるポンチと下型穴の芯ずれを小さくしポンチと下型穴
との嵌合隙間を小さくしたため鋼板の打抜穴の縁が尖鋭
になりしたがって加工されたシートが美麗になった。As mentioned above, the present invention is a sheet drilling device that uses a steel plate punched with a punch as a bottom plate.The upper die and the lower die are each divided into multiple parts in the width direction, and each element of the upper die is placed at a balanced position. The symmetrical design with respect to the center reduces misalignment between the punch and the lower die hole due to thermal displacement, and reduces the fitting gap between the punch and the lower die hole, making the edge of the punched hole in the steel plate sharp. The sheets are now beautiful.

又、加工されるシートの幅に合わせて不要な上型の運動
を連結部材を外すなどして停止させ加工することができ
機械寿命を長くし運転費用を節減できる。Further, unnecessary movement of the upper mold can be stopped by removing the connecting member or the like in accordance with the width of the sheet to be processed, thereby extending the life of the machine and reducing operating costs.

更に型に欠損を生じたときそのユニットのみ交換すれば
よく保守が容易に行なえる等の特徴を有する。Furthermore, when a defect occurs in the mold, maintenance can be easily performed by simply replacing that unit.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施態様における後記第３図のＩ−Ｉ
断面図、第２図は本考案の実施態様の動力系統図、第３
図は第１図■−■断面図、第４図は第１図のＩＶ−ＩＶ
視図、第５図は従来技術の説明図、第６図はシート断面
図、第７図はシート裏面を示す図である。 １・・・・・・本体、３・・・・・・受台、１１・・・
・・・クランク軸、１４・・・・・・コンロッド、１６
・・・・・・摺動体、１８・・・・・・上型、１９・・
・・・・保持板、２０・・・・・・ポンチ、２２・・・
・・・案内棒、２３・・・・・・ストリッパプレート、
２５・・・・・・圧縮ばね、２６・・・・・・下型、２
７・・・・・・下型穴、２８・・・・・・ベッドプレー
ト、２９・・・・・・鋼板、３０・・・・・・固着片。FIG. 1 shows I-I in FIG. 3 below in an embodiment of the present invention.
A sectional view, Figure 2 is a power system diagram of an embodiment of the present invention, and Figure 3 is a power system diagram of an embodiment of the present invention.
The figure is a sectional view of Figure 1 ■-■, and Figure 4 is a cross-sectional view of Figure 1 IV-IV.
5 is an explanatory view of the prior art, FIG. 6 is a sectional view of the sheet, and FIG. 7 is a view showing the back surface of the sheet. 1...Main body, 3...Case, 11...
... Crankshaft, 14 ... Conrod, 16
...Sliding body, 18... Upper mold, 19...
...Holding plate, 20...Punch, 22...
...Guide rod, 23... Stripper plate,
25...Compression spring, 26...Lower mold, 2
7...Bottom mold hole, 28...Bed plate, 29...Steel plate, 30...Fixing piece.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 垂直方向の溝型案内面を複数個所に設けた本体部材と、
該各室内面に沿って上下動可能な複数の摺動体と、該各
摺動体にそれぞれ水平に固着され打抜くシート材の幅方
向に複数個に分割された上型と、該各上型に対応して設
けられた複数のクランク軸と、前記各上型の中央位置に
て前記摺動体に枢結されると）もに前記クランク軸と連
結するコンロッドとを含み前記各上型は板状の保持板と
、該保持板に垂直方向に並列して植設された複数本の打
抜用ポンチと、前記保持板と平行且相対変位可能に設け
られ打抜時にはシートを押圧し前記ポンチの曲りを防ぐ
案内穴を穿設したストリッパプレートと、該ストリッパ
プレートを案内する複数個の案内棒と、該ストリッパプ
レートを常時下方に付勢する複数個の圧縮ばねを含み前
記コンロッドの連結位置が熱変形中立点となる如く前記
保持板、打抜用ポンチ、ストリッパプレート、案内棒、
圧縮ばねを配設し、更に打抜時に前記ポンチの案内とな
る穴を穿設したベッドプレートと、該ベッドプレート上
に取替可能に締着され前記ポンチにて打抜かれた穴を有
する金属板とを含み送り込まれるシール材を挾んで前記
上型と対峙して固定の受台上に前記上型と同数に分割さ
れた下型とを備えてなり、上型、下型間の温度差による
前記ポンチと前記ベッドプレート穴との芯ずれを小さく
したことを特徴とするシート類の穴あけ装置。A main body member provided with vertical groove-shaped guide surfaces at multiple locations;
a plurality of sliding bodies that are movable up and down along each of the interior surfaces; an upper mold that is fixed horizontally to each of the sliding bodies and is divided into a plurality of pieces in the width direction of the sheet material to be punched; Each of the upper molds is plate-shaped, including a plurality of correspondingly provided crankshafts, and a connecting rod that connects to the crankshafts (when pivotally connected to the sliding body at a central position of each of the upper molds). a holding plate, a plurality of punches for punching installed in parallel in the vertical direction on the holding plate, and a plurality of punches for punching, which are provided so as to be movable in parallel and relative to the holding plate, and press the sheet at the time of punching. It includes a stripper plate with guide holes to prevent bending, a plurality of guide rods that guide the stripper plate, and a plurality of compression springs that constantly bias the stripper plate downward. The holding plate, the punch for punching, the stripper plate, the guide rod,
A bed plate provided with a compression spring and further provided with a hole for guiding the punch during punching, and a metal plate that is replaceably fastened onto the bed plate and has a hole punched with the punch. and a lower mold divided into the same number as the upper mold, which is placed on a fixed pedestal facing the upper mold and sandwiching the sealing material to be sent, and the temperature difference between the upper mold and the lower mold is A hole punching device for sheets, characterized in that misalignment between the punch and the bed plate hole is reduced.