EP0361210A2 - Presse à barres de transfert - Google Patents

Presse à barres de transfert Download PDF

Info

Publication number: EP0361210A2
Authority: EP; European Patent Office
Prior art keywords: rocker arm; bores; gripper rails; piston rods; rocker
Prior art date: 1988-09-24
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.): Granted

Application number

EP89116923A

Other languages

German (de)

English (en)

Other versions

EP0361210A3 (en

EP0361210B1 (fr

Inventor

Walter Rieger

Karl Thudium

Rudi Brandstetter

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

L Schuler GmbH

Original Assignee

L Schuler GmbH

Priority date (The priority date 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 date listed.)

1988-09-24

Filing date

1989-09-13

Publication date

1990-04-04

1989-09-13 Application filed by L Schuler GmbH filed Critical L Schuler GmbH

1990-04-04 Publication of EP0361210A2 publication Critical patent/EP0361210A2/fr

1990-11-28 Publication of EP0361210A3 publication Critical patent/EP0361210A3/de

1992-08-12 Application granted granted Critical

1992-08-12 Publication of EP0361210B1 publication Critical patent/EP0361210B1/fr

2009-09-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
- B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars

Definitions

the invention relates to presses of the type specified in the preamble of claim 1.
the toolmaker must take into account the movements of the gripper rails in the three movement axes, which are carried out depending on the ram movement, in the external shape of the tool sets.
a very large number of so-called relative curves which will be explained below, would have to be considered.
the cross sections in the area of the tapping of the movements on the rocking levers must also be dimensioned correspondingly large and forces in additional guide means and in the adjustment solutions with a manageable number of setting options are preferred.
Another, not insignificant disadvantage of the infinitely variable adjustability according to the known device can be seen in the fact that the starting position of the gripper rails also adjusts with each stroke-actuated stroke adjustment.
the object of the invention is to ensure, in the case of a spindle-free adjustment in a press of the generic type, that at least one bearing pin is always set for the mounting of the connecting bracket on the rocking lever during the setting for a new stroke.
the solution according to the characterizing part of claim 1 creates the prerequisite for this.
connection between the rocker arm and the connecting strap is a direct one. This shows that the connection point can be automated on the one hand, and on the other hand, despite automation of the stroke adjustment, the force-absorbing and transmitting cross sections cannot be enlarged.
the automation process is controllable.
the movements of the gripper rails in the three possible axes must be coordinated with the up and down movement of the ram in order to prevent collisions between the upper part of the tool on the ram and the gripping tools located on the gripper rails or the sheet to be transported. If the movement curve of the gripper rails and that of the ram are merged into a curve and mathematically represented, two mirrors are created same theoretical curves. The relative curve can then be seen in the direction of the transfer movement of the sheets on one of the theoretical curves.
the curve shape that can be recognized here gives the tool manufacturer information about the external shape of his tool (upper part of the tool).
FIG. 1 the area of a large section press is indicated by 1 with press stands 10 and with cam disks 3 that can be moved by the main press drive via a gearbox 2 Cam 3 available.
a rocker arm 4 is placed for tapping the curve shape.
Each rocker arm 4 is mounted on the frame side in a pivot point 5.
Each rocker arm 4, which is a two-armed lever, has an area 15 in its free end, in which the linkage to a connecting bracket 7 takes place.
4 'one of two rocker arms is positioned for tapping the transfer movements of a total of four cams. The movement of the rocker arm 4 'is transmitted to a connecting bracket 7' and further in the pivot point 12 'on a crossbar 14.
the gripper rails 11 are adjustable on the crossmember 14 in the lifting and lowering direction, and in the opening-closing direction, and are displaceably mounted with the crossmember 14 in the transfer direction.
the connecting straps 7 are pivotally mounted in bearings in the articulation points 12.
the articulation points 12 are located on connecting rods 9 which extend over the areas of the locking boxes 8.
the connecting rods 6 act in the tapping points 13 on deflecting means 9 and, via these, on the locking boxes 8. In the locking boxes 8, the movements are deflected into lifting and lowering movements and into opening-closing movements of the gripper rails 11.
connection points 15, 15 ' shown here three bearings are indicated, which can be articulated optionally.
the bearings are on a circular arc 16 and 16 '.
the arc corresponds to the respective effective length of the connecting plate 7, 7 'between the connection point 15 and the articulation point 12 on the connecting rod 6 and the articulation point 12' on the cross member 14th
the piston rod 24 ⁇ is pushed as a result of pressurization via one of the pressure lines 25 into the bores of rocker arms 4, 4 'and connecting bracket 7, 7', so that rocker arms 4, 4 'and connecting bracket 7, 7' in this area by the as a bearing pin Acting piston rod 24 ⁇ are interconnected in the manner of a hinge joint. If the stroke is now to be adjusted, a second piston rod forming the new pivot point must be advanced. Then the previously used piston rod must be withdrawn. The arrangement of bores and piston rods on the all common line, circular arc 16 or 16 ', and the always the same starting position of the gripper rails 11, a flawless, with respect to the movement of the piston rods jam-free change of the stroke is guaranteed.
Securing the advanced piston rod 24, 24 ', 24' takes over a locking plate 20.
openings 26 are incorporated, each with a bead-like projection 28, which when moving the locking plate 20 in a movement 21 transverse to the piston rod 24, 24 '. .. engages in one of the turned grooves 27, 27 '....
the position of the piston rods can also be secured in these by using suitable pressure cylinders.
Pressure cylinders, the pistons or piston rods of which can be secured in the end positions, are commercially available.
the position query of the piston rods 24, 24 '... takes place via sensors 29, 29', 29 ⁇ .

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Press Drives And Press Lines (AREA)
Clamps And Clips (AREA)

EP89116923A 1988-09-24 1989-09-13 Presse à barres de transfert Expired - Lifetime EP0361210B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3832499		1988-09-24
DE3832499A DE3832499A1 (de)	1988-09-24	1988-09-24	Presse mit greiferschienen

Publications (3)

Publication Number	Publication Date
EP0361210A2 true EP0361210A2 (fr)	1990-04-04
EP0361210A3 EP0361210A3 (en)	1990-11-28
EP0361210B1 EP0361210B1 (fr)	1992-08-12

Family

ID=6363644

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP89116923A Expired - Lifetime EP0361210B1 (fr)	1988-09-24	1989-09-13	Presse à barres de transfert

Country Status (3)

Country	Link
EP (1)	EP0361210B1 (fr)
DE (2)	DE3832499A1 (fr)
ES (1)	ES2034543T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4223340A1 (de) *	1992-07-16	1994-01-20	Guenter Zierpka	Vorschubeinrichtung zum schrittweisen Material- und/oder Werkstücktransport an bzw. in intermittierend arbeitenden Produktionsmaschinen
DE4425560A1 (de) *	1994-07-20	1996-01-25	Schuler Pressen Gmbh & Co	Presse mit Greiferschienen
DE19853365A1 (de) *	1998-11-19	2000-05-25	Schuler Pressen Gmbh & Co	Verfahren und Vorrichtung zum Umformen
DE19853366B4 (de) *	1998-11-19	2007-07-19	Schuler Pressen Gmbh & Co. Kg	Vorrichtung und Verfahren zum Umformen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2188929A (en) *	1936-06-20	1940-02-06	Charles W Stevens	Drilling deep holes in wood
GB1417130A (en) *	1972-12-30	1975-12-10	Singer Co	Tufting machines
JPH0225956Y2 (fr) *	1984-10-23	1990-07-16
US4630461A (en) *	1985-05-17	1986-12-23	Avondale Industries, Inc.	Transfer feed mechanism for power presses

1988
- 1988-09-24 DE DE3832499A patent/DE3832499A1/de not_active Withdrawn
1989
- 1989-09-13 ES ES198989116923T patent/ES2034543T3/es not_active Expired - Lifetime
- 1989-09-13 DE DE8989116923T patent/DE58902040D1/de not_active Expired - Lifetime
- 1989-09-13 EP EP89116923A patent/EP0361210B1/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
ES2034543T3 (es)	1993-04-01
DE3832499A1 (de)	1990-03-29
EP0361210A3 (en)	1990-11-28
EP0361210B1 (fr)	1992-08-12
DE58902040D1 (de)	1992-09-17

Legal Events

Date	Code	Title	Description
1990-02-17	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1990-04-04	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE ES FR GB IT SE
1990-10-10	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1990-11-28	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE ES FR GB IT SE
1991-02-06	17P	Request for examination filed	Effective date: 19901213
1992-03-04	17Q	First examination report despatched	Effective date: 19920121
1992-06-26	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1992-08-12	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE ES FR GB IT SE
1992-09-17	REF	Corresponds to:	Ref document number: 58902040 Country of ref document: DE Date of ref document: 19920917
1992-09-23	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1992-10-16	ET	Fr: translation filed
1992-11-10	ITF	It: translation for a ep patent filed
1993-06-12	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1993-06-12	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1993-08-04	26N	No opposition filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 89116923.7
1995-09-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: PC2A Owner name: SCHULER GMBH
1999-08-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19990823 Year of fee payment: 11
1999-09-08	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19990908 Year of fee payment: 11
1999-09-20	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 19990920 Year of fee payment: 11
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2001-05-02	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20000913
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