EP0567005A2 - Dispositif de retardement pour une bobine - Google Patents

Dispositif de retardement pour une bobine Download PDF

Info

Publication number: EP0567005A2
Authority: EP; European Patent Office
Prior art keywords: brake; pressure chamber; plunger; winding roll; web
Prior art date: 1992-04-21
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

EP93106200A

Other languages

German (de)

English (en)

Other versions

EP0567005A3 (fr

EP0567005B1 (fr

Inventor

Ulrich Seyffert

Reinhold Kessler

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.)

Manroland AG

Original Assignee

MAN Roland Druckmaschinen AG

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.)

1992-04-21

Filing date

1993-04-16

Publication date

1993-10-27

1993-04-16 Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG

1993-10-27 Publication of EP0567005A2 publication Critical patent/EP0567005A2/fr

1995-05-24 Publication of EP0567005A3 publication Critical patent/EP0567005A3/fr

1996-05-22 Application granted granted Critical

1996-05-22 Publication of EP0567005B1 publication Critical patent/EP0567005B1/fr

2013-04-16 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
- B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle and controlling web tension
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
- B65H2403/70—Clutches; Couplings
- B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
- B65H2403/725—Brakes
- B65H2403/7255—Disc brakes

Definitions

the invention relates to a deceleration device for a winding roll according to the preamble of claim 1.
a deceleration device for a winding roll for regulating the web tension is known (DE-OS 23 44 591), which has a pendulum roller which senses the web tension and a control device for the braking force of a disc brake acting in the center of the winding roll which is influenced by its movement as a result of the change in the web tension. whose brake pads are actuated by a plunger of a working cylinder which rests on the end face of a membrane dividing a pressure chamber.
the disadvantage of this device is that the braking force can only be increased in stages.
the braking force required to maintain the web tension is reduced.
the result of this is that, in particular with simple control devices with a pendulum roller which is wound as a function of the position of the web running off the winding roller, brakes which are largely proportionally controlled leave the pendulum roller with its winding roller diameter decreasing its favorable working range. This means that during the automatic gluing process of the web running from the unwound small roll to the new winding roll, with the requirement of a suddenly increasing braking force, it takes an unfavorable position, so that the web can tear due to large web tension fluctuations.
Another disadvantage of the known device is that the friction losses for guiding the tappet with the decrease in diameter of the running winding reel and thus inevitably reducing braking force have an increasingly disruptive effect on sensitive control of the web tension.
the invention has for its object to design a delay device for a winding reel according to the preamble of claim 1 such that with simple technical means a favorable control behavior is ensured even with decreasing roll diameter and during the gluing process of the running web to the new winding reel.
This solution has the advantage that due to the smooth transmission of the braking force by the plunger Falsification of the regulation is avoided and, on the other hand, the pendulum roller is located in a working area which is particularly favorable for the gluing process of the new winding roller, due to the temporary application of a counterpressure to the working cylinder even with a low braking force.
an adjustable throttle valve is arranged in its pressure medium supply line, so that the differential force counteracting the end pressure chamber is delayed.
the further subclaims reflect the advantageous refinements of the subject matter of the invention, the integration of the working cylinder in a brake caliper, in addition to the low technical outlay for the compact assembly, also offering particularly spatial advantages.
a floating arrangement of the brake caliper in connection with the resilient suspension of a brake pad enables effective, uniformly uniform transmission of the braking force to the brake disc on both sides.
The are each with a pressure medium connection 12; 13 provided pressure chambers 9; 10 once bounded by a membrane 15 clamped between a cover 14 of the housing 8 and on the other hand by a further membrane 16 fastened to the latter in the pressure chamber 10.
both membranes 15; 16 is coaxially suspended from the housing 8 in a bore 17, a plunger 18 running smoothly, the diaphragm 15 clamped between the cover 14 of the housing 8 on the end of the plunger 18 and the second diaphragm 16 axially offset in the longitudinal direction in the longitudinal direction between a collar 19 and a detachable spacer 20 are clamped with the aid of a nut 21 which can be screwed onto a threaded attachment of the plunger 18.
both sides of the brake disc 6 are each in the U-shaped, open towards the brake disc 6 recess 23 from a base 24; 25 and a bonded brake pad 26; 27 existing brake pad 28; 29 arranged. While the support 24 of the one brake pad 28, which is in direct contact with the tappet 18, is fastened movably in the direction of movement of the spring band steel 30 screwed to the housing 8 under its elastic deformation, the other brake pad 29 is firmly screwed to the housing 8, so that in conjunction with the floating arrangement of the entire brake caliper 7, the braking force exerted by the plunger 18 via both brake pads 28; 29 is transmitted to the brake disc 6 on both sides.
Fig. 2 shows a schematic representation of the lateral arrangement of the two studs 2; 3 guided brake caliper 7 on the holding arm 1 for the winding roller, not shown.
the latter is received by the spindle 4, which is mounted in a semicircular recess 31 of the holding arm 1 and secured by a pivoting lever 32 and can be removed from the holder together with the brake disc 6 attached to it with the brake caliper 7 remaining on the holding arm 1.
Fig. 3 shows the control loop for regulating the web tension.
the web 34 running from the winding roller 33 wraps around the between two pull rollers 35; 36 arranged, mounted in a pivotable double lever 37 pendulum roller 38, which is loaded by a working cylinder 39 acting on the other end of the double lever with the setpoint value for the web tension that can be set via an upstream pressure control valve 40.
the changes in the web tension sensed by the pendulum roller 38 are transmitted via a control cam 41 attached to the double lever 37 thereof to the roller lever 42 of a pressure control valve 43 which is in connection with the pressure chamber 9 of the brake caliper 7 (FIG. 1) on the output side in the operating state.
the pendulum roller 38 With a decreasing diameter of the running winding roll, the pendulum roller 38 leaves its favorable working range, which is necessary in particular for the gluing process of a new winding roll, due to the decreasing braking force transmitted by the plunger 18. This state is countered after reaching a predeterminable diameter of the winding roll with the running web 34 by switching on the annular pressure chamber 10, which generates a differential force counteracting the braking force, to the supply line 45 for the end-side pressure chamber 9 by means of a directional valve 44.
a higher brake pressure to be newly adjusted via the pendulum roller is therefore required for the same braking force, as a result of which the pendulum roller 38 inevitably when the is switched off annular pressure chamber 10 connected, requiring a greater braking force sticking a new winding roller assumes a favorable working position for the control process.

Landscapes

Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

EP93106200A 1992-04-21 1993-04-16 Dispositif de retardement pour une bobine Expired - Lifetime EP0567005B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4213052		1992-04-21
DE4213052A DE4213052A1 (de)	1992-04-21	1992-04-21	Verzögerungsvorrichtung für eine Wickelrolle

Publications (3)

Publication Number	Publication Date
EP0567005A2 true EP0567005A2 (fr)	1993-10-27
EP0567005A3 EP0567005A3 (fr)	1995-05-24
EP0567005B1 EP0567005B1 (fr)	1996-05-22

Family

ID=6457130

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93106200A Expired - Lifetime EP0567005B1 (fr)	1992-04-21	1993-04-16	Dispositif de retardement pour une bobine

Country Status (2)

Country	Link
EP (1)	EP0567005B1 (fr)
DE (2)	DE4213052A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2965326A (en) *	1957-12-18	1960-12-20	Cameron Machine Co	Apparatus for controlling tension in a web
US3289967A (en) *	1964-06-01	1966-12-06	Art I Robinson	Tension regulator
DE1574420C2 (de) *	1967-04-28	1974-08-08	Rolpa S.A.R.L., Carouge-Genf (Schweiz)	Vorrichtung zum Abrollen einer Bahn
SE366007B (fr) *	1972-09-11	1974-04-08	Wifag Maschf
US3964692A (en) *	1973-08-03	1976-06-22	Mattco, Inc.	Winch spool with disc brake system

1992
- 1992-04-21 DE DE4213052A patent/DE4213052A1/de not_active Withdrawn
1993
- 1993-04-16 EP EP93106200A patent/EP0567005B1/fr not_active Expired - Lifetime
- 1993-04-16 DE DE59302652T patent/DE59302652D1/de not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE4213052A1 (de)	1993-10-28
EP0567005A3 (fr)	1995-05-24
EP0567005B1 (fr)	1996-05-22
DE59302652D1 (de)	1996-06-27

Legal Events

Date	Code	Title	Description
1993-09-09	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
1993-10-27	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): CH DE FR GB IT LI SE
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1996-02-29	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-03-06	ITF	It: translation for a ep patent filed
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