EP0453623A1 - Commande de lame pour machines de pliage - Google Patents

Commande de lame pour machines de pliage Download PDF

Info

Publication number: EP0453623A1
Authority: EP; European Patent Office
Prior art keywords: sword; top dead; sensor; knife; toothed disc
Prior art date: 1990-04-25
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

EP90111467A

Other languages

German (de)

English (en)

Other versions

EP0453623B1 (fr

Inventor

Werner Reim

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.)

MBO Postpress Solutions GmbH

Original Assignee

Maschinenbau Oppenweiler Binder GmbH and Co KG

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.)

1990-04-25

Filing date

1990-06-18

Publication date

1991-10-30

1990-06-18 Application filed by Maschinenbau Oppenweiler Binder GmbH and Co KG filed Critical Maschinenbau Oppenweiler Binder GmbH and Co KG

1991-10-30 Publication of EP0453623A1 publication Critical patent/EP0453623A1/fr

1994-10-26 Application granted granted Critical

1994-10-26 Publication of EP0453623B1 publication Critical patent/EP0453623B1/fr

2010-06-18 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000011156 evaluation Methods 0.000 claims abstract description 7
238000000034 method Methods 0.000 description 6
238000004904 shortening Methods 0.000 description 2
238000012423 maintenance Methods 0.000 description 1
238000005457 optimization Methods 0.000 description 1

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/18—Oscillating or reciprocating blade folders

Definitions

the invention relates to a sword control for folding machines with a crank drive that drives the sword and a sensor that detects the top dead center of the crank drive.
the aim is to stop the sword at top dead center so that the paper has enough space to be able to enter below the folding sword.
a symmetrically constructed cam to the crankshaft, which stops the sword drive via the sensor in top dead center.
This cam must be designed so long in the direction of rotation that at the highest machine speed the switching point is chosen so early that the sword comes to a standstill in the top dead center. It is accepted that the top dead center is more or less overrun depending on the machine speed.
the sword is stopped so early that the paper may no longer be able to enter underneath the folding sword unhindered, or the path of the sword must be chosen to be particularly large. If the cam overflows the sensor, this means a machine fault.
the starting condition for switching on the sword drive again is that the sword is in the top dead center position and the sensor is damped accordingly by the cam. To ensure that this position is always reached, the clutch and brake must be set very precisely. If, however, the behavior of the clutch and brake changes after only slight wear of the friction linings, an adjustment is essential.
the distance from sheet to sheet should be as short as possible, the minimum sheet distance depending on the position of the bar in relation to the transport plane of the sheet to be folded.
the sheet spacing is set by manual optimization, i.e. by shortening the bow spacing until the bow just runs undisturbed under the sword.
this is difficult and time-consuming, since the movement sequences between the bow and the folding sword and their mutual assignment cannot be recorded precisely enough with the human eye.
the sheet spacing is often set larger than is absolutely necessary.
the invention has for its object to provide a sword control for folding machines to achieve the highest possible machine performance, in which on the one hand the folding sword regardless of the machine speed and regardless of small changes in the state of the clutch and brake exactly at top dead center can be stopped and on the other hand it is possible is to determine the optimal arc distance and set it automatically.
a toothed disk which rotates synchronously with the crankshaft of the crank mechanism and has a plurality of teeth, at least one of which can be recognized by an evaluation electronics and of which the last one in the direction of rotation is preferably in the top dead center position of the Sword faces the feeler.
toothed washer instead of a toothed washer and an associated electromagnetic sensor, another, e.g. Light sensors are used, in which case the toothed disc is to be replaced by a disc on which markings are applied at intervals from one another.
toothed disk With the help of the toothed disk according to the invention, it is possible to trigger the switching process depending on the machine speed and depending on the state of the brake and clutch unit, starting with the first tooth in the direction of rotation, more or less early before reaching top dead center, so that the sword always comes to a standstill exactly at top dead center.
the teeth of the toothed disk are arranged symmetrically to the tooth corresponding to the top dead center position of the sword. Accordingly, the "last" tooth is the central tooth that determines the axis of symmetry.
the evaluation electronics can recognize which tooth is located under the sensor, this and in particular the last tooth or the central tooth that determines the axis of symmetry can be designed with different heights and / or widths, so that depending on the tooth that passes under the sensor, more or less high or wide output signals are generated. This is particularly easy when using a photoelectric sensor if different types of markings are applied to the pane. It is also conceivable to place the teeth or markings on the disk at different distances in the direction of rotation or in different widths in the direction of rotation.
the toothed disk according to the invention and the sensor according to the invention it is possible to determine and automatically set the shortest possible and thus the optimal arc distance while the machine is running.
the position of the sword relative to the paper transport plane can be measured.
the distance from sheet to sheet can now be calculated automatically and the sheet can be fed "foresighted" to the sword folding unit.
the shortening of the arc due to the parallel folds must be included in the calculation.
FIG. 1 shows schematically the structure of a sword drive and FIG. 2 shows the top view of a toothed disk.
the sword drive contains a motor 11, on the shaft of which a clutch and brake unit 12 is attached.
a crankshaft 13 On the driven part of the clutch and brake unit 12 there is a crankshaft 13, the pin 14 of which can be rotated in the sword 15 or its straight guide and can be moved laterally (perpendicular to the plane of the drawing).
the sword 15 itself is guided in guides 16, 17.
a sheet of paper 18 On the folding table arranged below the sword there is a sheet of paper 18 which, after the sword 15 has been introduced into the folding gap, is gripped and removed by the folding rollers 19 and 20.
the toothed disk 21 is covered over a portion of its circumference with teeth 0, 1, 2, 3, 4 and 1 ', 2', 3 ', 4', the tooth 0 in the sense of the definition given at the beginning last "tooth represents.
the lower part of the toothed disk 21 is cut off.
the toothed disc runs during operation, e.g. counterclockwise, there is initially a pause in the area of the section during which the sensor 22 emits no pulses. If the first tooth 4 runs in the direction of rotation under the sensor 22, the sensor 22 emits the first pulse. The fifth impulse then corresponds exactly to the top dead center of the sword, at which the sword is to be stopped. If the toothed disk 21 rotates slowly with the crankshaft 13, the braking process can be initiated relatively late, for example if the tooth 1 is below the sensor 22. At higher engine speeds or after some wear of the clutch and brake unit 12, the control electronics initiate the braking process earlier, for example if tooth 2 or 3 is located below sensor 22.

Landscapes

Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

EP90111467A 1990-04-25 1990-06-18 Commande de lame pour machines de pliage Expired - Lifetime EP0453623B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4013183A DE4013183A1 (de)	1990-04-25	1990-04-25	Schwertsteuerung fuer falzmaschinen
DE4013183		1990-04-25

Publications (2)

Publication Number	Publication Date
EP0453623A1 true EP0453623A1 (fr)	1991-10-30
EP0453623B1 EP0453623B1 (fr)	1994-10-26

Family

ID=6405060

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90111467A Expired - Lifetime EP0453623B1 (fr)	1990-04-25	1990-06-18	Commande de lame pour machines de pliage

Country Status (2)

Country	Link
EP (1)	EP0453623B1 (fr)
DE (2)	DE4013183A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1952053U (de) *	1965-02-04	1966-12-22	Stahl & Co O H G Maschinenfabr	Schwertfalzwerk.
DE2504489A1 (de) *	1975-02-04	1976-08-05	Oppenweiler Binder & Co Maschb	Schwertfalzmaschine
DE3027343A1 (de) *	1980-07-18	1982-02-04	Maschinenbau Oppenweiler Binder GmbH & Co, 7155 Oppenweiler	Schwertantrieb fuer falzmaschinen

1990
- 1990-04-25 DE DE4013183A patent/DE4013183A1/de not_active Withdrawn
- 1990-06-18 EP EP90111467A patent/EP0453623B1/fr not_active Expired - Lifetime
- 1990-06-18 DE DE59007570T patent/DE59007570D1/de not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1952053U (de) *	1965-02-04	1966-12-22	Stahl & Co O H G Maschinenfabr	Schwertfalzwerk.
DE2504489A1 (de) *	1975-02-04	1976-08-05	Oppenweiler Binder & Co Maschb	Schwertfalzmaschine
DE3027343A1 (de) *	1980-07-18	1982-02-04	Maschinenbau Oppenweiler Binder GmbH & Co, 7155 Oppenweiler	Schwertantrieb fuer falzmaschinen

Also Published As

Publication number	Publication date
EP0453623B1 (fr)	1994-10-26
DE59007570D1 (de)	1994-12-01
DE4013183A1 (de)	1991-10-31

Legal Events

Date	Code	Title	Description
1991-09-13	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
1991-10-30	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI
1992-06-03	17P	Request for examination filed	Effective date: 19920407
1994-02-16	17Q	First examination report despatched	Effective date: 19931229
1994-09-09	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-10-26	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI
1994-12-01	REF	Corresponds to:	Ref document number: 59007570 Country of ref document: DE Date of ref document: 19941201
1994-12-07	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19941104
1995-01-09	ITF	It: translation for a ep patent filed
1995-02-03	ET	Fr: translation filed
1995-08-26	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-08-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-10-18	26N	No opposition filed
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-08-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20020828 Year of fee payment: 13
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