EP0013368B1 - Dispositif pour régler la tension d'une bande de matériau - Google Patents

Dispositif pour régler la tension d'une bande de matériau Download PDF

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Publication number
EP0013368B1
EP0013368B1 EP79105121A EP79105121A EP0013368B1 EP 0013368 B1 EP0013368 B1 EP 0013368B1 EP 79105121 A EP79105121 A EP 79105121A EP 79105121 A EP79105121 A EP 79105121A EP 0013368 B1 EP0013368 B1 EP 0013368B1
Authority
EP
European Patent Office
Prior art keywords
valve
pneumatic
brake cylinder
sheet
tension
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
Application number
EP79105121A
Other languages
German (de)
English (en)
Other versions
EP0013368A1 (fr
Inventor
Werner Römhild
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.)
TIDLAND GmbH
Original Assignee
TIDLAND 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.)
Filing date
Publication date
Priority claimed from DE19782855591 external-priority patent/DE2855591C2/de
Priority claimed from DE19782855592 external-priority patent/DE2855592C3/de
Application filed by TIDLAND GmbH filed Critical TIDLAND GmbH
Priority to AT79105121T priority Critical patent/ATE2736T1/de
Publication of EP0013368A1 publication Critical patent/EP0013368A1/fr
Application granted granted Critical
Publication of EP0013368B1 publication Critical patent/EP0013368B1/fr
Expired legal-status Critical Current

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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
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/3112—S-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer rollers

Definitions

  • the invention relates to a device for regulating the tension of a web running from a supply roll with a dancer roller, around which the web is guided, to which a mechanical control element is connected, the deflection of which influences a pneumatic valve arrangement which, in a pressure line system provided with throttles, controls the pneumatic Pressure of a brake cylinder is applied to a pneumatic brake used to brake the web movement, the control member being movable between two end positions, each of which is acted upon by a valve connected to a pneumatic line with a throttle connected in series, both of which are connected to a compressed air container which is the brake cylinder acted upon, wherein also the valve acted upon by a reduction in the tension of the material web is switched into the line under pressure and when it is actuated by the control member, the compressed air container with the compressed air source e connects and the valve acted upon by an increase in the tension of the material web is switched into a line opening into the atmosphere and, when actuated, connects the compressed air tank to the atmosphere.
  • FR-A-1 530 726 describes a device for regulating the tension of a web running off a supply roll, a control member connected to a dancer roller being designed as a lever under the action of a tension spring.
  • the spring tension acting on the lever can be adjusted in size using a handle.
  • the lever itself is pivoted between two limit switches, so that the tension of the web can be changed either in one direction or in the other.
  • the invention has for its object to provide this known control device with an emergency stop circuit that responds sensitively even with small deflections of the dancer roller and adapts the stopping process for the material web exactly to the prevailing operating conditions.
  • control member in question is a pivotally mounted lever which is pretensioned by a tension spring and which can be pivoted between two limit switches in order to act on the relevant valves which are each switched into the pneumatic line, and in that the compressed air reservoir even acts on a second pneumatic brake cylinder via a solenoid valve that can be actuated for an emergency stop.
  • the control device according to the invention is thus equipped with two brake systems, one brake system continuously regulating the tension of the material web and the other brake system ensuring the emergency stop of the machine.
  • the emergency stop In known machines, the emergency stop always occurs suddenly after it has been triggered, with the known disadvantageous effects on the machine components and on the suddenly braked product web.
  • the emergency stop In the control device according to the invention, on the other hand, the emergency stop is switched on in a controlled manner and thus protects the entire machine and also the respectively clamped material web.
  • the compressed air container is additionally acted upon by a third, pneumatic brake cylinder via a throttle and a valve.
  • the normal stopping of the machine also takes into account the respective operating state of the machine, because the third brake cylinder provided for this purpose is acted upon by a compressed air reservoir, the internal pressure of which is adapted to the current operating state of the machine.
  • the invention is explained in more detail below using an exemplary embodiment.
  • the figure shows a circuit diagram of the most important components of the control device according to the invention.
  • a web 1 runs from a supply roll, not shown in the drawing, in the direction of arrow 2 through a machine processing the web.
  • the material web is guided around a dancer roller 3, which is rotatably attached to a pivotably mounted lever 4.
  • a further roller 5 is arranged behind the dancer roller 3 in such a way that the web in front of and behind the dancer roller is essentially parallel regardless of the position of the lever 4.
  • a tension spring 6 acts on the lever 4, the spring tension of which can be adjusted using a setting lever 7 with a scale 8.
  • the lever 4 is pivoted in the direction of the double arrow 9. During this pivoting movement, it abuts limit switches 10 and 11, which are arranged on both sides of the lever and are switched into a line 12 and 13, respectively.
  • a choke 14 is provided in series with the limit switch 10 and a choke 15 in series with the limit switch 11.
  • a main connection 15a of the pressure line 12 is connected to the pressure line 12 via a conventional service unit 16, consisting of a pressure reducing valve with a water separator.
  • a manually operated ventilation valve 17 is provided parallel to the valve 10. After the throttle 14, the line 13 opens into the pressure line 12.
  • a monometer 18 measures the pneumatic pressure present there.
  • the pressure line 12 is then guided to a compressed air tank 19 which is connected to a first brake cylinder 22 of a pneumatic brake via a further pressure line 20 and a manually operable vent valve 21.
  • the brake cylinder acts on a brake disc 23, which rotates with the supply roll for the web and is firmly connected to it.
  • the device described so far works as follows. If, for example, the tension of the web 1 decreases, the lever 4 is pivoted to the right by the tension spring 6, so that the limit switch 10 also shifts its valve to the right. As a result, the pressure passes from the main connection 15 a via the line 12 into the compressed air tank 19, and not suddenly, but with a gentle pressure increase. A pressure of, for example, 6 bar is set in the compressed air tank 19 with a time delay via the throttle 14, which acts on the brake cylinder 22 accordingly, as a result of which the web is braked accordingly. This increases the tension of the web and the lever 4 goes back to its center position shown in the drawing.
  • the pressure prevailing in the compressed air tank therefore always corresponds to the pressure with which the brake cylinder must be applied in order to maintain the set tension of the material web. Experiments have shown that this pressure decreases, the less goods are still on the supply roll.
  • a pressure line 24 is connected to a second brake cylinder 27 via a solenoid valve 25 and an adjustable pressure booster 26.
  • the solenoid valve 25 is actuated and the pressure prevailing in the compressed air tank 19 is applied to the second brake cylinder 27, as a result of which the emergency stop takes place.
  • a further pressure line 28 via a manually operable vent valve 29, an adjustable throttle 30 and a solenoid valve 31 with a third brake cylinder 32 for normal stop can be eliminated. If the normal stop is to take place, the solenoid valve 31 is actuated and the pressure prevailing in the pressure vessel 19 is smoothed via the throttle 30 to the brake cylinder 32 which stops the machine.
  • the chokes 14 and 15 are also adjustable.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (3)

1. Dispositif pour la régulation de la tension d'une bande continue de marchandise (1) provenant d'un rouleau d'alimentation, avec un cylindre baladeur (3) autour duquel passe la bande continue (1) et auquel est raccordé un organe de commande mécanique (4) dont la déviation agit sur un groupe de soupapes pneumatiques (10, 11) qui contrôle, dans un système de conduites de pression équipé d'organes d'étranglement (14, 15), la pression pneumatique appliquée au cylindre (22) d'un frein pneumatique servant au freinage du mouvement de la bande continue de marchandise, l'organe de commande (4) étant mobile entre deux positions extrêmes dans chacune desquelles est actionnée une soupape (10, 11) qui est intercalée, en série avec un organe d'étranglement (14, 15) dans une conduite pneumatique (12, 13), ces deux soupapes étant en communication avec un réservoir d'air comprimé (19) qui alimente le cylindre de frein (22), le soupape (10) qui est actionnée en cas de diminution de la tension de la bande continue de marchandise (1) étant intercalée dans une conduite (12) qui est sous pression et mettant le réservoir d'air comprimé (19) en communication avec la source d'air comprimé (15a) lorsqu'elle est actionnée par l'organe de commande (4), tandis que la soupape (11) qui, est actionnée en cas d'augmentation de la tension de la bande continue de marchandise (1) est intercalée dans une conduite (13) débouchant dans l'atmosphère et met le réservoir d'air comprimé (19) en communication avec l'atmosphère lorsqu'elle est actionnée, caractérisé en ce que l'organe de commande en question est un levier (4) monté pivotant et précontraint par un ressort de traction (6), levier qui peut pivoter entre deux interrupteurs de fin de course pour actionner les soupapes en question (10, 11), intercalées chacune dans une conduite pneumatique (12, 13), et en ce que le réservoir d'air comprimé (19) lui-même alimente en plus second cylindre de frein pneumatique (27) par l'intermédiaire d'une soupape électromagnétique (25) qui peut être actionnée en cas d'arrêt d'urgence.
2. Dispositif selon la revendication 1, caractérisé en ce qu'un multiplicateur de pression (26) est prévu entre la soupape électromagnétique (25) et le second cylindre de frein (27).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que pour l'arrêt normal de la machine qui traite la bande continue de marchandise, le réservoir d'air comprimé (19) alimente en plus un troisième cylindre de frein pneumatique (32), par l'intermédiaire d'un organe d'étranglement (30) et d'une soupape (31).
EP79105121A 1978-12-22 1979-12-13 Dispositif pour régler la tension d'une bande de matériau Expired EP0013368B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79105121T ATE2736T1 (de) 1978-12-22 1979-12-13 Vorrichtung zur regelung der spannung einer warenbahn.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2855591 1978-12-22
DE19782855591 DE2855591C2 (de) 1978-12-22 1978-12-22 Vorrichtung zum Abbremsen einer Bahnen bearbeitenden Maschine
DE2855592 1978-12-22
DE19782855592 DE2855592C3 (de) 1978-12-22 1978-12-22 Vorrichtung zum Messen und/oder zum Regeln der Spannung einer von einer Vorratsrolle ablaufenden Warenbahn

Publications (2)

Publication Number Publication Date
EP0013368A1 EP0013368A1 (fr) 1980-07-23
EP0013368B1 true EP0013368B1 (fr) 1983-03-09

Family

ID=25777008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79105121A Expired EP0013368B1 (fr) 1978-12-22 1979-12-13 Dispositif pour régler la tension d'une bande de matériau

Country Status (3)

Country Link
US (1) US4288045A (fr)
EP (1) EP0013368B1 (fr)
DE (1) DE2965013D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608182A1 (de) * 1986-03-12 1987-10-01 Roland Man Druckmasch Vorrichtung zur regelung der spannung einer drucktraegerbahn mit einer notstoppeinrichtung
JP2981221B1 (ja) * 1998-11-25 1999-11-22 株式会社東京機械製作所 輪転機のウェブ紙張力制御装置
CN106926581B (zh) * 2015-12-30 2018-10-30 宁波欣达印刷机器有限公司 用于卷筒式凹版印刷机断料保护的方法
JP6719253B2 (ja) * 2016-03-30 2020-07-08 理想科学工業株式会社 搬送装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677080A (en) * 1949-09-17 1954-04-27 Allis Chalmers Mfg Co Strip tensioning system responsive to two fluid pressures
US3101915A (en) * 1962-05-23 1963-08-27 Cameron Machine Co Apparatus for controlling tension in a running web
GB1046803A (en) * 1963-07-03 1966-10-26 Timsons Holdings Ltd Means controlling tension in a travelling web during drawing from a reel of re-reeling
BE699320A (fr) * 1966-06-02 1967-11-16
US3630463A (en) * 1969-09-22 1971-12-28 Faustel Inc Web-tension control apparatus
US3784123A (en) * 1971-04-05 1974-01-08 Whiteley Ind Inc Tension control system
DE2411482C3 (de) * 1974-03-11 1981-08-06 Maschinenfabrik Goebel Gmbh, 6100 Darmstadt Einrichtung zum Aufrechterhalten einer Spannung in einer Bahn aus Papier, Folie o.dgl.

Also Published As

Publication number Publication date
EP0013368A1 (fr) 1980-07-23
DE2965013D1 (en) 1983-04-14
US4288045A (en) 1981-09-08

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