JPH0355240B2 - - Google Patents
Info
- Publication number
- JPH0355240B2 JPH0355240B2 JP58195186A JP19518683A JPH0355240B2 JP H0355240 B2 JPH0355240 B2 JP H0355240B2 JP 58195186 A JP58195186 A JP 58195186A JP 19518683 A JP19518683 A JP 19518683A JP H0355240 B2 JPH0355240 B2 JP H0355240B2
- Authority
- JP
- Japan
- Prior art keywords
- apron
- lower apron
- lifting cylinder
- opening
- support member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0272—Deflection compensating means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Presses And Accessory Devices Thereof (AREA)
Description
【発明の詳細な説明】
この発明は、プレス機械の可動エプロン昇降力
伝達装置に係り、更に詳述すれば、例えば、下部
エプロンを可動にした油圧プレスブレーキにおい
て、下部エプロンの開口部に設けられた油圧シリ
ンダの昇降力を、下部エプロン下端近辺に固定さ
れた下部エプロン支持部材を介して、下部エプロ
ンに伝達する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a movable apron elevating force transmission device for a press machine. The present invention relates to a device for transmitting the lifting force of a hydraulic cylinder to a lower apron via a lower apron support member fixed near the lower end of the lower apron.
プレス機械、例えばプレスブレーキ等において
曲げ精度の高い加工製品を得るためには、加工時
に上部及び下部エプロンの撓み曲線が可及的に等
しくなることが必要である。然し、上部エプロン
の両端を押し下げる形式の油圧プレスブレーキ等
では、両エプロンは、加工時、反対方向に撓み、
両端の撓みは少ないが、中央部の撓みが著しく、
撓み曲線は全く一致しない。また、下部エプロン
に２個又は３個の開口部を設け、該開口部に押上
げシリンダを装着して、下部エプロンを直接押し
上げる形式の油圧プレスブレーキ等では、両エプ
ロンは加工時、大凡、同一方向に撓むが、下部エ
プロンの撓みが、応力の集中する開口部の付近で
著しい。従つて、このようなプレス機械では、曲
げ精度の高い、均一な加工製品を得ることが困難
であつた。 In order to obtain a processed product with high bending accuracy in a press machine, such as a press brake, it is necessary that the bending curves of the upper and lower aprons be as equal as possible during processing. However, with hydraulic press brakes that push down both ends of the upper apron, both aprons bend in opposite directions during processing.
There is little deflection at both ends, but there is significant deflection at the center.
The deflection curves do not match at all. In addition, in hydraulic press brakes, etc., in which two or three openings are provided in the lower apron and a push-up cylinder is attached to the openings to directly push up the lower apron, both aprons are generally the same during processing. However, the deflection of the lower apron is significant near the opening where stress is concentrated. Therefore, with such a press machine, it is difficult to obtain a uniformly processed product with high bending accuracy.
この発明は、上述のごとき従来の問題点に鑑み
てなされたものである。 This invention has been made in view of the conventional problems as described above.
次に、この発明の実施例を図面によつて説明す
る。第１図及び第２図は、この発明を利用したフ
レーム３、上部エプロン５、下部エプロン７の主
要部からなる油圧プレスブレーキ１のそれぞれ、
正面図及び側面図で、下部エプロンに、下部エプ
ロン昇降力伝達装置９が装着されている。第３図
以下にこの実施例詳細を示してある。即ち、下部
エプロン７の左右中央部寄りに、それぞれ、昇降
シリンダ１１を配置する環状の下部エプロン開口
部１３が設けられ、この開口部１３内に配置され
た昇降シリンダ１１は、下部エプロン７の前後の
前板、後板に支承されている。また下部エプロン
７には、該下部エプロン開口部１３をそれぞれ挟
んで前後に、該下部エプロン開口部１３とほぼ同
じ大きさの開口部１７を備えた同形のエプロン支
持部材１５が設けられている。前記一対のエプロ
ン支持部材１５は、第５図に示すように開口部１
７の上部で、受圧部材２１に溶接して接合され、
その下部は、下部エプロンの下部端面２３の近辺
に、２個のピン２５によつて下部エプロンに連結
されている。 Next, embodiments of the invention will be described with reference to the drawings. FIGS. 1 and 2 show a hydraulic press brake 1 comprising main parts of a frame 3, an upper apron 5, and a lower apron 7, respectively, using the present invention.
In the front and side views, a lower apron lifting force transmission device 9 is attached to the lower apron. Details of this embodiment are shown in FIG. 3 and below. That is, annular lower apron openings 13 in which lifting cylinders 11 are disposed are provided near the center of the left and right sides of the lower apron 7. It is supported by the front and rear plates of. Further, the lower apron 7 is provided with apron support members 15 of the same shape, each having an opening 17 of approximately the same size as the lower apron opening 13, at the front and rear sides of the lower apron opening 13, respectively. The pair of apron support members 15 have openings 1 as shown in FIG.
At the upper part of 7, it is welded and joined to the pressure receiving member 21,
Its lower part is connected to the lower apron by two pins 25 near the lower end face 23 of the lower apron.
この構成において、シリンダ１１に圧油を供給
し、ピストン１９を押し上げると、押上力は受圧
部材２１からエプロン支持部材１５を経て下方の
２個のピン２５に二分して伝えられ、下部エプロ
ンは剛性の大きい下端近辺から上方に押し上げら
れる。したがつて従来のような応力の集中が起ら
ず、下部エプロンは均一に撓み、曲げ精度の高い
加工製品を得ることができる。 In this configuration, when pressure oil is supplied to the cylinder 11 and the piston 19 is pushed up, the pushing up force is transmitted from the pressure receiving member 21 to the two lower pins 25 via the apron support member 15 in two parts, and the lower apron is rigid. It is pushed upward from near the large lower end of. Therefore, unlike the conventional method, stress concentration does not occur, the lower apron is bent uniformly, and a processed product with high bending accuracy can be obtained.
エプロン支持部材の下部エプロンへの固定はボ
ルトでもよく、第６図のように溶接により接合し
てもよい。また下部エプロンの開口部１３の上部
及び左右に連続した溝を形成することにより、エ
プロン支持部材と同様の効果をもたせることもで
きる。 The apron support member may be fixed to the lower apron by bolts, or may be joined by welding as shown in FIG. Further, by forming continuous grooves above and on the left and right sides of the opening 13 of the lower apron, the same effect as that of the apron support member can be provided.
以上のごとき実施例の説明により理解されるよ
うに、要するにこの発明は、フレーム３の上部に
取付けた上部エプロン５の下方位置に下部エプロ
ン７を上下動自在に設けてなる油圧プレスブレー
キにして、下部エプロン７を上下動するための昇
降用シリンダ１１を、下部エプロン７に形成した
環状の開口部１３内に配置して設けると共に上記
昇降用シリンダ１１をフレーム３の下部に取付け
た前板および後板に支承して設け、上記開口部１
３に近接して設けたエプロン支持部材１５の上部
側を前記昇降用シリンダ１１により押上げる構造
に設けると共に、エプロン支持部材１５の下部
を、前記昇降用シリンダ１１の押上力を分散して
下部エプロン７に伝達すべく複数箇所に亘つてあ
るいは連続部をもつて下部エプロン７に固定して
なるものである。 As can be understood from the above description of the embodiments, in short, the present invention provides a hydraulic press brake in which a lower apron 7 is vertically movably provided below an upper apron 5 attached to the upper part of a frame 3. A lifting cylinder 11 for vertically moving the lower apron 7 is provided within an annular opening 13 formed in the lower apron 7, and a front plate and a rear plate are provided with the lifting cylinder 11 attached to the lower part of the frame 3. The opening 1 is provided by being supported on a plate.
The upper side of the apron support member 15, which is provided in the vicinity of It is fixed to the lower apron 7 at multiple locations or with a continuous portion in order to transmit the information to the lower apron 7.
上記構成より明らかなように、本発明において
は、下部エプロン７に形成した開口部１３内に昇
降用シリンダ１１を配置してなるものであり、上
記開口部１３は環状であつて閉じているから、例
えば下側を開いた開口部等と比較した場合、下部
エプロン７の剛性を大きく保持できるものであ
る。 As is clear from the above configuration, in the present invention, the lifting cylinder 11 is disposed within the opening 13 formed in the lower apron 7, and the opening 13 is annular and closed. , for example, the rigidity of the lower apron 7 can be maintained to a large extent when compared with, for example, an opening that is open on the lower side.
また、前記開口部１３内に配置した昇降用シリ
ンダ１１によつて押上力を受けるエプロン支持部
材１５の下部は、押上力が分散して下部エプロン
７へ伝達されるように、複数箇所に亘つてあるい
は連続部をもつて下部エプロン７に固定してある
から、押上力が一点に集中するようなことがな
く、下部エプロン７の局部的な変形を抑制でき、
加工精度をより向上せしめることができるもので
ある。 In addition, the lower part of the apron support member 15 that receives upward force from the lifting cylinder 11 disposed in the opening 13 is provided at multiple locations so that the upward force is dispersed and transmitted to the lower apron 7. Alternatively, since it is fixed to the lower apron 7 with a continuous portion, the upward force is not concentrated at one point, and local deformation of the lower apron 7 can be suppressed.
This makes it possible to further improve machining accuracy.
添付図面はこの発明の実施例を示すもので、第
１図及び第２図はこの発明の装置を利用した油圧
プレスブレーキのそれぞれ正面図、側面図であ
る。第３図はこの発明の装置の正面図、第４図は
第３図の−断面図、第５図は受圧部の拡大断
面図第６図はエプロン支持部材の下部を下部エプ
ロンに溶接した他の実施例である。図中同一符号
は同一物又は相等物を示す。
１……油圧プレスブレーキ、３……フレーム、
５……上部エプロン、７……下部エプロン、９…
…下部エプロン昇降力伝達装置、１１……昇降シ
リンダ、１３……下部エプロン開口部、１５……
エプロン支持部材、２１……受圧部材、２５……
ピン。
The accompanying drawings show an embodiment of the invention, and FIGS. 1 and 2 are a front view and a side view, respectively, of a hydraulic press brake using the apparatus of the invention. Fig. 3 is a front view of the device of the present invention, Fig. 4 is a sectional view taken from Fig. 3, and Fig. 5 is an enlarged sectional view of the pressure receiving part. This is an example. The same reference numerals in the figures indicate the same or equivalent items. 1... Hydraulic press brake, 3... Frame,
5... Upper apron, 7... Lower apron, 9...
...Lower apron lifting force transmission device, 11... Lifting cylinder, 13... Lower apron opening, 15...
Apron support member, 21... Pressure receiving member, 25...
pin.
Claims (1)
の下方位置に下部エプロン７を上下動自在に設け
てなる油圧プレスブレーキにして、下部エプロン
７を上下動するための昇降用シリンダ１１を、下
部エプロン７に形成した環状の開口部１３内に配
置して設けると共に上記昇降用シリンダ１１をフ
レーム３の下部に取付けた前板および後板に支承
して設け、上記開口部１３に近接して設けたエプ
ロン支持部材１５の上部側を前記昇降用シリンダ
１１により押上げる構造に設けると共に、エプロ
ン支持部材１５の下部を、前記昇降用シリンダ１
１の押上力を分散して下部エプロン７に伝達すべ
く複数箇所に亘つてあるいは連続部をもつて下部
エプロン７に固定してなることを特徴とするプレ
スブレーキ。1 Upper apron 5 attached to the upper part of frame 3
A hydraulic press brake is provided in which the lower apron 7 is provided at a lower position so as to be movable up and down, and a lifting cylinder 11 for moving the lower apron 7 up and down is arranged in an annular opening 13 formed in the lower apron 7. The lifting cylinder 11 is supported by the front plate and the rear plate attached to the lower part of the frame 3, and the upper side of the apron support member 15 provided close to the opening 13 is connected to the lifting cylinder 11. 11, and the lower part of the apron support member 15 is pushed up by the lifting cylinder 1.
A press brake is characterized in that it is fixed to a lower apron 7 at multiple locations or with a continuous portion in order to disperse and transmit the upward force of 1 to the lower apron 7.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19518683A JPS6087999A (en) | 1983-10-20 | 1983-10-20 | Device for transmitting lifting power of movable apron for press machine |
| US06/651,754 US4672831A (en) | 1983-09-21 | 1984-09-18 | Bending press |
| CA000463543A CA1255201A (en) | 1983-09-21 | 1984-09-19 | Bending press |
| AU33331/84A AU573758B2 (en) | 1983-09-21 | 1984-09-20 | Brake press |
| DE3434470A DE3434470C2 (en) | 1983-09-21 | 1984-09-20 | Bending press |
| GB08423802A GB2147836B (en) | 1983-09-21 | 1984-09-20 | Be |
| CH4514/84A CH666202A5 (en) | 1983-09-21 | 1984-09-20 | BENDING PRESS. |
| KR1019840005790A KR890002647B1 (en) | 1983-09-21 | 1984-09-21 | Bending press |
| SE8404750A SE464281B (en) | 1983-09-21 | 1984-09-21 | BENDING PRESS |
| IT8422759A IT1176751B (en) | 1983-09-21 | 1984-09-21 | PRESS TO FOLD METAL PIECES IN THE FORM OF A SHEET |
| FR848414556A FR2552015B1 (en) | 1983-09-21 | 1984-09-21 | BENDING PRESS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19518683A JPS6087999A (en) | 1983-10-20 | 1983-10-20 | Device for transmitting lifting power of movable apron for press machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6087999A JPS6087999A (en) | 1985-05-17 |
| JPH0355240B2 true JPH0355240B2 (en) | 1991-08-22 |
Family
ID=16336879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19518683A Granted JPS6087999A (en) | 1983-09-21 | 1983-10-20 | Device for transmitting lifting power of movable apron for press machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087999A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5691695U (en) * | 1979-12-12 | 1981-07-21 |
-
1983
- 1983-10-20 JP JP19518683A patent/JPS6087999A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6087999A (en) | 1985-05-17 |
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