JP3693517B2

JP3693517B2 - Punching device for molded products

Info

Publication number: JP3693517B2
Application number: JP06476299A
Authority: JP
Inventors: 豊蔵中島
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1999-03-11
Filing date: 1999-03-11
Publication date: 2005-09-07
Anticipated expiration: 2019-03-11
Also published as: JP2000263147A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば予め所定の面形状にプレス成形された成形品に開口穴を形成するための打ち抜き装置に関する。
【０００２】
【従来の技術】
従来、例えば自動車部品の成形等において、プレス成形した成形品に開口穴を成形する装置として、例えば図３及び図４に示すようなプレス打ち抜き装置５１が知られている。
この装置５１は、下ベース盤５２上に取り付けられる受部材５４の上面に成形品Ｗを載置し、上ベース盤５３を降下させて押圧部材５５の枠体５６により、穴あけ個所の周囲を押圧保持するとともに、カッタ部材５７により穴あけを行うようにしている。
【０００３】
すなわち、下ベース盤５２の四隅には、支持部材５８を介して摺動ピン５９が設けられるとともに、上ベース盤５３の四隅には、前記摺動ピン５９を摺動自在に挿通せしめるガイド部材６０が取り付けられ、上ベース盤５３は下ベース盤５２に対して上下動自在にされている。
また、前記下ベース盤５２の受部材５４には、上面側が所定領域で開放する開孔Ｈが設けられ、また受部材５４の上面には、成形品形状に倣った形状部５４ｇが形成されている。そして、前記開孔Ｈの周縁部には、カッティングエッジ５４ｋが形成されている。
【０００４】
また前記上ベース盤５３の押圧部材５５は、上ベース盤５３の４箇所の孔部５３ｈに摺動自在に挿入されるプッシュロッド６１と、このプッシュロッド６１の下端部に取り付けられる前記枠体５６を備え、前記プッシュロッド６１の周囲であって、前記枠体５６と上ベース盤５３の間には、付勢部材６２が介装されている。
そして枠体５６の下面には、成形品形状に倣った形状部５６ｇが形成されている。
また前記カッタ部材５７は、前記受部材５４のカッティングエッジ５４ｋに概略対向する位置に切刃５７ｋを備えている。
【０００５】
このように構成されたプレス打ち抜き装置５１の受部材５４上に、プレス成形された成形品Ｗが載置されると、上ベース盤５３を降下させて押圧部材５５の枠体５６により成形品Ｗを押圧保持し、更に上ベース盤５３を降下させてカッタ部材５７の切刃５７ｋと受部材５４のカッティングエッジ５４ｋとの剪断作用によって成形品Ｗに穴あけを行うようにしている。
【０００６】
【発明が解決しようとする課題】
ところが、上記のような従来技術は、成形品Ｗの穴あけ個所の周囲全体を枠体５６で押圧するようにしているため、特に成形品Ｗの面形状が複雑な場合は、枠体５６下面の形状部５６ｋを成形するための工数がかかるようになり、また成形品Ｗの面形状に多少の成形誤差があるため、時として枠体５６の形状部５６ｋと成形品Ｗが片当たり状態になって均一な押圧力にならず、正確な穴あけが出来ないという不具合があった。
【０００７】
本発明は上記不具合に鑑みなされたものであり、穴あけ時に成形品の押圧力を均一なものとし、正確な穴あけが出来るようにすることを目的とする。
【０００８】
【課題を解決するための手段】
上記目的を達成するため本発明は、上ベース盤に取り付けた押圧部材と下ベース盤に取り付けた受部材によって成形品の所定部を挟み込んで保持し、上ベース盤に設けたカッタ部材と前記受部材に形成した開孔周縁のエッジ部との間の剪断作用によって成形品に穴を形成するようにした打ち抜き装置において、押圧部材を、カッタ部材の周囲に局所的に配置され且つ付勢部材によって下方に付勢される複数の押圧ロッドにより構成し、またこの押圧ロッドの下面と受部材の上面に、成形品の形状に倣った形状部を設けるようにした。
【０００９】
このように、局所的に設けた複数の押圧ロッドによって成形品を押圧保持するようにすれば、成形品の面形状が複雑になっても、押圧ロッドの下面に形状部を成形する工数がかからず、また、成形品の面形状に多少の誤差があっても、押圧力が片寄るような不具合を抑制することが出来、正確な穴あけが可能となる。
【００１０】
また請求項２では、押圧ロッドの側面に平面部を形成し、この平面部に、押圧ロッドの向きを規制する規制部材を係合させるようにした。
【００１１】
すなわち、押圧ロッドが軸周りに回転すると、下面の形状部と成形品の面形状が狂って均一に押圧力を加えることが出来なくなる。
このため、押圧ロッドの側面に平面部を形成し、この平面部に規制部材を係合させて押圧ロッドの向きを規制する。
ここで、押圧ロッドの形状は任意で、角棒でも丸棒でも良いが、丸棒の場合は例えば側面の一部を削ったり、または平板を固着したりして平面部を形成することが出来、角棒の場合は、既存の平面部を利用することが出来る。
【００１２】
【発明の実施の形態】
本発明の実施の形態について添付した図面に基づき説明する。
ここで図１は本発明に係る打ち抜き装置の正面図、図２は図１のＡ−Ａ線断面図である。
【００１３】
本発明に係る打ち抜き装置１は、予めプレス成形等によって所望の面形状に成形された成形品Ｗに対して、所定個所に窓状の穴をあけるような装置として構成され、特に成形品Ｗの面形状に多少の成形誤差が生じても、正確な位置に且つ正確な形状で穴あけできるようにされ、装置の基本構成は従来のプレス打ち抜き装置と同様の構成である。
【００１４】
すなわち、図１及び図２に示すように、下ベース盤２の四隅には、支持部材８を介して摺動ピン９が取り付けられ、この摺動ピン９は、上ベース盤３の四隅のガイド部材１０に摺動自在に挿入され、下ベース盤２に対して上ベース盤３が上下動自在にされている。
【００１５】
下ベース盤２の上部には、成形品Ｗが載置される受部材４が設けられており、この受部材４には、上面側が所定領域で開放する開孔Ｈが設けられ、また受部材４の上面には、成形品Ｗの面形状に倣った形状部４ｇが設けられている。
そして、前記開孔Ｈの周縁部には、カッティングエッジ４ｋが形成されており、これら受部材４の構造は従来の構造とほぼ同一である。
【００１６】
上ベース盤３には、成形品Ｗを押圧して保持する押圧部材５と、成形品Ｗに穴を打ち抜くカッタ部材７が設けられており、カッタ部材７には、前記受部材４のカッティングエッジ４ｋに概略対向する位置に切刃７ｋが形成されている。
【００１７】
前記押圧部材５は、カッタ部材７の周囲を取り囲むよう局所的に配置される複数の押圧ロッド６を備えており、この押圧ロッド６の基端部は、上ベース盤３に穿設される孔部３ｈに挿入され、孔部３ｈに内装される付勢部材１１で下方に付勢されている。
【００１８】
また、この押圧ロッド６は、実施形態では円柱丸棒状のロッドとされ、その先端面には、成形品Ｗの面形状に倣った形状部６ｇが形成されるとともに、側面の一部が削り取られて平面部６ｆとされている。
【００１９】
そして、この押圧ロッド６の近傍には、上ベース盤３に固定される固定部材１２が設けられ、この固定部材１２に取り付けられる規制部材１３の前面が前記押圧ロッド６の平面部６ｆに当接している。そしてこの規制部材１３の前面も平面状にされている。
【００２０】
以上のような打ち抜き装置１において、受部材４上に、プレス成形された成形品Ｗを載置し、上ベース盤３を降下させて押圧ロッド６で成形品Ｗを押圧保持すると同時に、更に上ベース盤３を降下させてカッタ部材７の切刃７ｋと受部材４のカッティングエッジ４ｋにより穴あけを行う。
【００２１】
この際、押圧ロッド６による押圧保持は局所的であり、成形品Ｗの面形状に多少の成形誤差があっても、受部材４と押圧ロッド６により成形品Ｗをより均一な力で保持することが出来、正確な穴あけが可能となる。
また、押圧ロッド６の先端面に形状部６ｇを成形するにあたり、従来に比べて成形領域が狭いため、複雑な形状でも比較的容易に成形出来る。
因みに、図面上では打ち抜き装置１に１箇所の穴あけ個所しか図示していないが、実際には複数箇所の同様な構成の穴あけ機構を設けており、１つの打ち抜き装置１で複数の穴あけを同時に行うようにしている。
【００２２】
尚、本発明は以上のような実施形態に限定されるものではない。本発明の特許請求の範囲に記載した事項と実質的に同一の構成を有し、同一の作用効果を奏するものは本発明の技術的範囲に属する。
例えば押圧ロッド６は角棒でも良く、また規制部材１３の位置や係合手段等は任意である。
【００２３】
【発明の効果】
以上のように本発明に係る成形品の打ち抜き装置は、成形品を押圧保持する押圧部材として、カッタ部材の周囲に局所的に配置される複数の押圧ロッドにより構成し、この押圧ロッドの下面と受部材の上面に、成形品の形状に倣った形状部を設けるようにしたため、押圧ロッドの下面に形状部を成形する工数がかからず、また、成形品の面形状に多少の成形誤差があっても、押圧力が片寄るような不具合を抑制することが出来、正確な穴あけが可能となる。
また請求項２のように、押圧ロッドの側面に平面部を形成し、この平面部に規制部材を係合させれば、下面の形状部を成形品の形状に正確に合わせることが出来、押圧力をより均一にすることが出来る。
【図面の簡単な説明】
【図１】本発明に係る打ち抜き装置の正面図
【図２】図１のＡ−Ａ線断面図
【図３】従来の打ち抜き装置の正面図
【図４】図３のＢ−Ｂ線断面図
【符号の説明】
１…打ち抜き装置、２…下ベース盤、３…上ベース盤、４…受部材、４ｇ…形状部、４ｋ…カッティングエッジ、６…押圧ロッド、６ｇ…形状部、６ｆ…平面部、７…カッタ部材、１３…規制部材、Ｈ…開孔。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a punching device for forming an opening hole in a molded product that is previously press-formed into a predetermined surface shape, for example.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a press punching device 51 as shown in FIGS. 3 and 4 is known as a device for forming an opening hole in a press-molded molded product in molding of automobile parts, for example.
This device 51 places a molded product W on the upper surface of a receiving member 54 mounted on the lower base board 52, lowers the upper base board 53, and presses the periphery of the drilling location by the frame 56 of the pressing member 55. While holding, the cutter member 57 is used to make a hole.
[0003]
That is, sliding pins 59 are provided at the four corners of the lower base board 52 via support members 58, and the guide members 60 are slidably inserted into the four corners of the upper base board 53. The upper base board 53 is movable up and down with respect to the lower base board 52.
Further, the receiving member 54 of the lower base board 52 is provided with an opening H whose upper surface side is opened in a predetermined region, and a shape portion 54g that follows the shape of the molded product is formed on the upper surface of the receiving member 54. Yes. A cutting edge 54k is formed at the peripheral edge of the opening H.
[0004]
The pressing member 55 of the upper base board 53 includes a push rod 61 that is slidably inserted into four holes 53 h of the upper base board 53, and the frame body 56 that is attached to the lower end of the push rod 61. An urging member 62 is interposed around the push rod 61 and between the frame body 56 and the upper base board 53.
A shape portion 56g that follows the shape of the molded product is formed on the lower surface of the frame 56.
The cutter member 57 includes a cutting edge 57k at a position substantially opposite to the cutting edge 54k of the receiving member 54.
[0005]
When the press-formed molded product W is placed on the receiving member 54 of the press punching device 51 configured as described above, the upper base board 53 is lowered and the molded product W is moved by the frame 56 of the pressing member 55. The upper base board 53 is further lowered, and the molded product W is perforated by the shearing action of the cutting edge 57k of the cutter member 57 and the cutting edge 54k of the receiving member 54.
[0006]
[Problems to be solved by the invention]
However, since the conventional technology as described above presses the entire periphery of the drilled portion of the molded product W with the frame body 56, especially when the surface shape of the molded product W is complicated, Since the man-hours for forming the shape portion 56k are increased, and there is some molding error in the surface shape of the molded product W, the shape portion 56k of the frame 56 and the molded product W are sometimes in a single-contact state. In other words, there was a problem that the pressing force was not uniform and accurate drilling was not possible.
[0007]
The present invention has been made in view of the above problems, and an object thereof is to make the pressing force of a molded product uniform during drilling so that accurate drilling can be performed.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured to sandwich and hold a predetermined portion of a molded product by a pressing member attached to an upper base board and a receiving member attached to the lower base board, and to receive the cutter member provided on the upper base board and the receiving member. In a punching device in which a hole is formed in a molded article by a shearing action between the edge portion of the opening formed in the member, the pressing member is locally disposed around the cutter member and is applied by the biasing member. A plurality of pressing rods urged downward are formed, and a shape portion that follows the shape of the molded product is provided on the lower surface of the pressing rod and the upper surface of the receiving member.
[0009]
Thus, if the molded product is pressed and held by a plurality of locally provided pressing rods, even if the surface shape of the molded product becomes complicated, the man-hour for forming the shape portion on the lower surface of the pressure rod is increased. In addition, even if there is some error in the surface shape of the molded product, it is possible to suppress a problem that the pressing force is offset, and accurate drilling is possible.
[0010]
According to a second aspect of the present invention, a flat portion is formed on the side surface of the pressing rod, and a restricting member for restricting the direction of the pressing rod is engaged with the flat portion.
[0011]
That is, when the pressing rod rotates around the axis, the shape of the lower surface and the surface shape of the molded product are out of order, and it becomes impossible to apply a pressing force uniformly.
For this reason, a plane part is formed in the side of a press rod, and a regulating member is engaged with this plane part, and the direction of a press rod is controlled.
Here, the shape of the pressing rod is arbitrary, and it may be a square bar or a round bar. However, in the case of a round bar, for example, a flat part can be formed by shaving a part of the side surface or fixing a flat plate. In the case of a square bar, an existing plane part can be used.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a front view of a punching device according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG.
[0013]
The punching device 1 according to the present invention is configured as a device that forms a window-like hole at a predetermined position with respect to a molded product W that has been previously molded into a desired surface shape by press molding or the like. Even if a slight molding error occurs in the surface shape, it is possible to make a hole at an accurate position and with an accurate shape, and the basic configuration of the apparatus is the same as that of a conventional press punching apparatus.
[0014]
That is, as shown in FIGS. 1 and 2, sliding pins 9 are attached to the four corners of the lower base board 2 via support members 8, and the sliding pins 9 are guides at the four corners of the upper base board 3. The upper base board 3 is vertically movable with respect to the lower base board 2 by being slidably inserted into the member 10.
[0015]
A receiving member 4 on which the molded product W is placed is provided at the upper part of the lower base board 2, and the receiving member 4 is provided with an opening H whose upper surface side opens in a predetermined area. On the upper surface of 4, a shape portion 4 g that follows the surface shape of the molded product W is provided.
And the cutting edge 4k is formed in the peripheral part of the said opening H, The structure of these receiving members 4 is substantially the same as the conventional structure.
[0016]
The upper base board 3 is provided with a pressing member 5 for pressing and holding the molded product W, and a cutter member 7 for punching a hole in the molded product W. The cutter member 7 has a cutting edge of the receiving member 4. A cutting edge 7k is formed at a position substantially opposite to 4k.
[0017]
The pressing member 5 includes a plurality of pressing rods 6 that are locally disposed so as to surround the cutter member 7, and a base end portion of the pressing rod 6 is a hole formed in the upper base board 3. The urging member 11 is inserted into the portion 3h and is urged downward by the urging member 11 installed in the hole 3h.
[0018]
In addition, the pressure rod 6 is a cylindrical round rod-like rod in the embodiment, and a shape portion 6g that follows the surface shape of the molded product W is formed on the tip surface thereof, and a part of the side surface is scraped off. The flat portion 6f.
[0019]
A fixing member 12 fixed to the upper base board 3 is provided in the vicinity of the pressing rod 6, and the front surface of the regulating member 13 attached to the fixing member 12 comes into contact with the flat portion 6 f of the pressing rod 6. ing. The front surface of the restricting member 13 is also flat.
[0020]
In the punching device 1 as described above, the press-molded molded product W is placed on the receiving member 4, the upper base board 3 is lowered, and the molded product W is pressed and held by the pressing rod 6. The base board 3 is lowered to make a hole with the cutting edge 7k of the cutter member 7 and the cutting edge 4k of the receiving member 4.
[0021]
At this time, the pressure holding by the pressing rod 6 is local, and the molded product W is held by the receiving member 4 and the pressing rod 6 with a more uniform force even if there is some molding error in the surface shape of the molded product W. And accurate drilling is possible.
Further, when the shape portion 6g is formed on the distal end surface of the pressing rod 6, since the forming region is narrower than the conventional one, even a complicated shape can be formed relatively easily.
Incidentally, although only one punching portion is shown in the punching device 1 in the drawing, a plurality of punching mechanisms having the same configuration are actually provided, and a single punching device 1 performs a plurality of punching holes simultaneously. I am doing so.
[0022]
The present invention is not limited to the above embodiment. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the pressing rod 6 may be a square bar, and the position of the regulating member 13 and the engaging means are arbitrary.
[0023]
【The invention's effect】
As described above, the punching device for a molded product according to the present invention includes a plurality of pressing rods locally disposed around the cutter member as a pressing member for pressing and holding the molded product, Since the upper surface of the receiving member is provided with a shape portion that follows the shape of the molded product, there is no man-hour for forming the shape portion on the lower surface of the pressing rod, and there is some molding error in the surface shape of the molded product. Even if it exists, it is possible to suppress a problem that the pressing force is offset, and accurate drilling is possible.
Further, as described in claim 2, if the flat surface portion is formed on the side surface of the pressing rod and the regulating member is engaged with the flat surface portion, the shape portion of the lower surface can be accurately matched to the shape of the molded product. The pressure can be made more uniform.
[Brief description of the drawings]
1 is a front view of a punching apparatus according to the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 3 is a front view of a conventional punching apparatus. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Punching device, 2 ... Lower base board, 3 ... Upper base board, 4 ... Receiving member, 4g ... Shape part, 4k ... Cutting edge, 6 ... Pressing rod, 6g ... Shape part, 6f ... Plane part, 7 ... Cutter Member, 13 ... restricting member, H ... opening.

Claims

A predetermined part of the molded product is sandwiched and held between the pressing member attached to the upper base board and the receiving member attached to the lower base board, and the edge part of the peripheral edge of the hole formed in the receiving member is provided on the upper base board A punching device in which a hole is formed in a molded article by a shearing action between the pressing member and the pressing member is locally arranged around the cutter member and biased downward by a biasing member An apparatus for punching a molded product, comprising a plurality of pressing rods, wherein a shape portion following the shape of the molded product is provided on the lower surface of the pressing rod and the upper surface of the receiving member.

2. The molded product punching device according to claim 1, wherein a flat portion is formed on a side surface of the pressing rod, and a regulating member for restricting the direction of the pressing rod is engaged with the flat portion. Punching device for molded products.