EP0036987A1 - Vorrichtung zur Handhabung und Zuführung von Massenwerkstoffen - Google Patents

Vorrichtung zur Handhabung und Zuführung von Massenwerkstoffen Download PDF

Info

Publication number
EP0036987A1
EP0036987A1 EP81101892A EP81101892A EP0036987A1 EP 0036987 A1 EP0036987 A1 EP 0036987A1 EP 81101892 A EP81101892 A EP 81101892A EP 81101892 A EP81101892 A EP 81101892A EP 0036987 A1 EP0036987 A1 EP 0036987A1
Authority
EP
European Patent Office
Prior art keywords
support
handler
roller
loop
rollers
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.)
Withdrawn
Application number
EP81101892A
Other languages
English (en)
French (fr)
Inventor
Samuel Benjamin Stevens
James Richard Lytle, Sr.
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of EP0036987A1 publication Critical patent/EP0036987A1/de
Withdrawn legal-status Critical Current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
    • B65H20/00—Advancing webs
    • B65H20/24—Advancing webs by looping or like devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/21—Accumulators
    • B65H2408/212—Accumulators of zigzag-type

Definitions

  • This invention relates to machines which positively and variably feed material from bulk storage to downstream processing machinery.
  • Existing feed apparatus usually includes at least one set of two rollers which rotate in opposite directions and compress the material to be fed therebetween in order to provide a positive drive. After exiting these rollers, the material falls into a loop before entering subsequent machinery.
  • the feed rate is controlled by means of a so-called machanical " dancer" which consists of two or more limit switches positioned to intercept the material loop. Operation of these limit switches provides signals which control the operation of a drive motor connected to the rollers. On-off operation of the drive motor results in a relatively constant loop size and variable material feed.
  • the existing feed apparatus previously described is particularly adapted to the tire building industry. In tire building rubber strips are taken from a supply source, fed through the feed apparatus onto, or into, a tire building machine. Close control of the fed apparatus is mandatory to control the lineal speed of the strip material in order that a predetermined amount of rubber be made available for tire building itself.
  • the present invention is directed to overcoming one or more of the problems as set forth above.
  • the present invention provides a bulk material feed apparatus which is extremely compact in size, and, after initial start.up, automatically begins feeding material whenever such material is necessary for the operation of downstream machinery, is capable of feeding material at a variable rate, induces only small compression or tension stresses in the material, varies material feed without contacting the material after it exits the drive rollers, and discontinues material feeding and sounds an alarm when the end of the stock is reached.
  • material is looped over a primary drive roller, threaded behind and around a secondary roller mounted below and separated from the primary roller, and directed substantially horizontal to subsequent processing machinery.
  • the secondary roller rotates slightly faster than the primary drive roller and roller separation is such that there is a relatively small contact arc length between the secondary roller and the material. This reduced contact allows the secondary roller to slip relative to the material and thus maintain a small amount of tension on the material in order to provide positive contact between the material and the primary roller.
  • Material feed rate is slightly higher than that which is necessary for the proper operation of downstream components, thereby causing the bulk material to fall into a loop between the feed apparatus and the subsequent machinery.
  • a photoelectric detector senses the size of the loop and controls material feed rate by alternately starting and stopping the primary and secondary rollers. In this manner, a variable feed rate is achieved without contact between the feed apparatus and the material other than the drive rollers themselves.
  • a single drive roller is utilized which automatically provides variable material feed and feed start-up without the necessity of providing loop-sensing devices or starting and stopping the drive roller motor.
  • Variable feed is accomplished by providing limited contact between the material and the drive roller.
  • a feed rate greater than downstream usage enlarges the loop of material between the feed apparatus and subsequent machinery which reduces contact between the drive roller and the material.
  • the drive roller slips relative to the material thereby stopping further material feed.
  • material wrap and contact with the drive roller is increased and positive drive automatically recommences.
  • a trip wire is provided below the lower roller which is utilized to stop the drive motor and provide an alarm signal.
  • the trip wire is situated so as to intercept the end of the material as it falls from the feed apparatus and activates a switch to provide the stop and alarm functions.
  • a bulk material handler and feeder 10 which includes a primary drive roller 12 and a secondary roller 14 mounted in a vertically spaced arrangement on a frame 16.
  • the ends of the rollers 12 and 14 include sprockets 18 and 20 driven through a chain 22 by a motor 24 and drive sprocket 26.
  • the chain 22 is so arranged around the sprockets 18 and 20 so as to drive the rollers 12 and 14 in opposite directions.
  • the frame 16 further includes an outwardly projecting arm 28 which projects over a storage container 30 and terminates in a guide roller 32.
  • Bulk material 34 in the form of a strip is fed over the roller 32, between upstanding centering rollers 36, and around the drive rollers 12 and 14.
  • the material 34 is wrapped counterclockwise (as viewed in Fig. 2) partially around the primary roller 12, threaded between the two rollers 12 and 14, and is wrapped clockwise partially around the lower secondary roller 14.
  • the strip of material 34 is then fed to the entrance 38 of a subsequent processing machine (not shown) located downstream of the material feeder 10. Located within the downstream machine is means to draw the material 34 into the entrance 38 at a particular usage rate. Such means to draw the material 34 may be compression rollers gripping both sides of the material 34.
  • the usage rate of the downstream machine be known, and that the speed of the motor 24 and tooth ratio between the drive sprocket 26 and the roller sprockets l8 and 20 be such that material 34 is fed from the material handler 10 at a greater rate than is used by the downstream machinery.
  • the sprocket tooth ratio of the rollers 12 and 14 is such that the secondary roller-14 rotates at a higher speed than the primary roller 12.
  • the higher rotational speed of the secondary roller 14 causes the roller 14 to slip relative to the material 34, but because there is frictional drag between the material 34 and the roller 14, there will be a slight tension on the material located between the two rollers 12 and 14. This tension and the tension caused by the weight of material 34 remaining in the storage container 30 will ensure substantial contact between the material 34 and the primary roller 12 which, in turn, ensures that the material 34 will be fed at a rate equal to the surface velocity of the primary roller 12.
  • a photoelectric device 42 is provided which is used in conjunction with a reflector 44 attached under the entrance 38.
  • the photoelectric device 42 operates by emitting a beam of visible or infrared energy, depicted by the dotted line 46, which is directed toward the reflector 44 and reflected back to a sensor' 48 located in the device 42.
  • a suitable control circuit (not shown) is connected between the photoelectric device 42 and the motor 24 and operates to permit the motor 24 to run so long as the beam 46 is reflected and sensed by the sensor 48. If the beam 46 is blocked and prevented from returning to the sensor 48, the control circuit operates to shut off the motor 24.
  • the size of the hanging loop 40 may be maintained at a relatively constant size. As shown in Fig. 2, as the loop 40 increases in size, it eventually hangs a distance sufficient to block the beam 46, as illustrated by double phantom lines 40A. As explained above, when the beam 46 is broken, the motor 24 will stop and material feed will be discontinued. As material 34 is drawn into the entrance 38, the loop 40 decreases in size until it reaches approximately the position shown by the solid lines 40B. At this point, the beam 46 is no longer blocked and the photoelectric device 42 and its associated control circuit will operate to again start the motor 24. A suitable time delay is incorporated into the control circuit to allow the loop 40 to vary over a relatively large range thus preventing continual on-off operation of the motor 24.
  • the loop will move or sag to the position shown by 40A which will interrupt the beam 46, will shut down the drive, and will stay in that position until a supply of material is again required. Therefore, as long as the material is continuous (i.e. not severed or terminated) there will be an automatic start up of operations when there is a demand for material.
  • the feeder is capable of operating at optimum designed speed down to zero speed.
  • a trip wire 50 is provided which is connected to a limit switch 52.
  • the end of the material 34 passes the upper roller 12, the end will fall free between the two rollers 12 and 14 and fall toward the bottom of the frame 16.
  • the material 34 intercepts the trip wire 50 which pulls on a switch arm 54 and actuates the switch 52. operation of the switch 52 provides an electrical signal to an appropriate control circuit which sounds an alarm and stops the motor 24.
  • FIG. 3 A similar bulk material handler 10 is illustrated in Fig. 3 which includes structure similar to that found in Figs. 1 and 2 and labeled identically. The differences between the machine shown in Fig. 3 and that shown in Figs. 1 and 2 are that the upper roller 12' is free running in Fig. 3, i.e. not driven by the motor 24 and chain 22, and that the photoelectric device 42 and reflector 44 are eliminated.
  • the material handler 10 of F ig. 3 is further provided with a chain tensioning sprocket 56.
  • the material 34 is threaded as previously but material feed rate and the size of the hanging loop 40 is controlled by the lower roller 14 alone; the upper roller 12 1 being free rolling and merely a material support and guide. Control over material feed is accomplished by variation of the contact arc length between the lower roller 14 and the material 34. As in the machine of Fig. 1, the material is fed from the handler 10 at a rate greater than can be utilized by the downstream machine. Therefore, the size of the hanging loop 40 will tend to increase as discussed above.
  • the upper roller 12' may be provided with a frictional brake (not shown) to accomplish the same purpose.
  • the size of the hanging loop 40 will decrease and consequently, angular contact between the material 34 and the roller 14 will increase.
  • this angular contact will be such that sufficient friction is generated between the roller 14 and the material 34 to overcome the weight of material hanging from the guide roller 32 and its adhesion to layers under itself.
  • positive material feed will recommence.
  • the configuration of the material 34 between the handler 10 and the entrance 38 is shown by extreme conditions 40A and 40B, and it should be apparent that the hanging loop 40 will not actually vary between these two extremes. So long as material demand is constant, the hanging loop 40 will reach an equilibrium position at which slippage between the material 34 and the roller 14 is constant and the feed rate from the handler 10 is equal to material usage.
  • a bulk material feed apparatus which takes up little more space than the material storage container itself, and, once the drive is started, the apparatus automatically feeds material when such material is necessary forthe operation of subsequent machinery, is capable of feeding material at a variable rate, and discontinues feeding material and sounds an alarm when either a break in the stock or the end of the stock is reached.
  • the feed apparatus induces no compression forces in the material and except for a very small tension force necessary to maintain frictional contact between the driver rollers and the material, does not subject the material to tensile stresses.
  • the drive rollers be constructed of a material which will effectively frictionally engage the type of material being fed.
  • the rollers may be made of metal or include a metal surface.
  • the rollers should be made of, or surfaced with, a softer composition such as rubber.
  • angular contact between the rollers and the material may be varied by changing the vertical and/or horizontal spacing between the upper and lower rollers. Such adjustments will provide optimal frictional engagement between the material to be fed and the drive rollers.
EP81101892A 1980-03-31 1981-03-14 Vorrichtung zur Handhabung und Zuführung von Massenwerkstoffen Withdrawn EP0036987A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
WOPCT/US80/00350 1980-03-31
PCT/US1980/000350 WO1981002879A1 (en) 1980-03-31 1980-03-31 Bulk material handler and feeder

Publications (1)

Publication Number Publication Date
EP0036987A1 true EP0036987A1 (de) 1981-10-07

Family

ID=22154266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101892A Withdrawn EP0036987A1 (de) 1980-03-31 1981-03-14 Vorrichtung zur Handhabung und Zuführung von Massenwerkstoffen

Country Status (3)

Country Link
EP (1) EP0036987A1 (de)
JP (1) JPS57500469A (de)
WO (1) WO1981002879A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2062917A2 (es) * 1992-10-01 1994-12-16 Bayarri Carmen Vazquez Maquina para la produccion de rollos de cinta sin mandril, y rollo de cinta obtenido por dicha maquina.
GB2317606A (en) * 1994-03-04 1998-04-01 Fujitsu Ltd Roller abrasion evaluation
US5934663A (en) * 1994-03-04 1999-08-10 Fujitsu Limited Rubber rollers for carrying media, and evaluation of their abrasion
CN105600544A (zh) * 2016-02-15 2016-05-25 世源科技(芜湖)新材料有限公司 一种生物降解薄膜生产线供料用换料仓储架

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6630088B1 (en) † 2000-10-23 2003-10-07 Kimberly-Clark Worldwide, Inc. Forming media with enhanced air flow properties

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1846044A (en) * 1927-09-12 1932-02-23 Fisk Rubber Co Tire building machine
US2658691A (en) * 1950-09-27 1953-11-10 Nat Rubber Machinery Co Ply stock magazine
US2671495A (en) * 1949-07-08 1954-03-09 Gen Tire & Rubber Co Apparatus for storing and feeding web material
GB779927A (en) * 1955-03-28 1957-07-24 Levey Fred K H Co Inc Improvements in tension control apparatus for printing machines
FR2083896A5 (de) * 1970-03-04 1971-12-17 Eastman Kodak Co
FR2090859A5 (de) * 1970-04-28 1972-01-14 Pembroke Carton & Printing Co
FR2193389A5 (de) * 1972-07-21 1974-02-15 Bwg Bergwerk Walzwerk
US3853267A (en) * 1974-02-01 1974-12-10 Nat Controls Digital subtraction system and method for determining net weight
US3867826A (en) * 1972-07-21 1975-02-25 Bwg Bergwerk Walzwerk Stretcher for continuously moving strip

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE676599C (de) * 1936-11-22 1939-06-07 Bobst & Sohn A G J Einrichtung zum UEberwachen der Bildung einer Schleife in einer Maschine mit absatzweiser Abnahme einer ununterbrochen gefoerderten Bahn aus Pappe
US2147467A (en) * 1937-12-17 1939-02-14 Westinghouse Electric & Mfg Co Loop regulator
US3199803A (en) * 1961-07-17 1965-08-10 Sylvania Electric Prod Feeding device
DE1774704C3 (de) * 1968-08-17 1980-10-02 Metalloxyd Gmbh, 5000 Koeln Vorrichtung zum Wickeln von Metallbundspulen
US3661338A (en) * 1969-11-03 1972-05-09 Data Link Corp High speed winder
US3721376A (en) * 1971-05-03 1973-03-20 Piedmont Eng And Machine Co In Tensionless variable feed system for a traveling strip
US3890547A (en) * 1972-03-31 1975-06-17 Norman Keck Speed control device
IL47384A0 (en) * 1974-06-21 1975-07-28 Packaging Ind Inc Web handling apparatus
JPS5751255Y2 (de) * 1977-03-24 1982-11-09

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1846044A (en) * 1927-09-12 1932-02-23 Fisk Rubber Co Tire building machine
US2671495A (en) * 1949-07-08 1954-03-09 Gen Tire & Rubber Co Apparatus for storing and feeding web material
US2658691A (en) * 1950-09-27 1953-11-10 Nat Rubber Machinery Co Ply stock magazine
GB779927A (en) * 1955-03-28 1957-07-24 Levey Fred K H Co Inc Improvements in tension control apparatus for printing machines
FR2083896A5 (de) * 1970-03-04 1971-12-17 Eastman Kodak Co
US3640438A (en) * 1970-03-04 1972-02-08 Eastman Kodak Co Web-handling apparatus
FR2090859A5 (de) * 1970-04-28 1972-01-14 Pembroke Carton & Printing Co
FR2193389A5 (de) * 1972-07-21 1974-02-15 Bwg Bergwerk Walzwerk
US3867826A (en) * 1972-07-21 1975-02-25 Bwg Bergwerk Walzwerk Stretcher for continuously moving strip
US3853267A (en) * 1974-02-01 1974-12-10 Nat Controls Digital subtraction system and method for determining net weight

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2062917A2 (es) * 1992-10-01 1994-12-16 Bayarri Carmen Vazquez Maquina para la produccion de rollos de cinta sin mandril, y rollo de cinta obtenido por dicha maquina.
GB2317606A (en) * 1994-03-04 1998-04-01 Fujitsu Ltd Roller abrasion evaluation
US5934663A (en) * 1994-03-04 1999-08-10 Fujitsu Limited Rubber rollers for carrying media, and evaluation of their abrasion
CN105600544A (zh) * 2016-02-15 2016-05-25 世源科技(芜湖)新材料有限公司 一种生物降解薄膜生产线供料用换料仓储架

Also Published As

Publication number Publication date
JPS57500469A (de) 1982-03-18
WO1981002879A1 (en) 1981-10-15

Similar Documents

Publication Publication Date Title
US4691912A (en) Device for separating flat objects
US5785224A (en) Inserting apparatus and method using a snap-and-burst technique
EP0307509B1 (de) Vorrichtung zum Heranbringen und Abschneiden von Klebestreifen für dünne Einzelteile
NL192298C (nl) Inrichting voor het toevoeren van een verpakkings-kunststoffilm in een verpakkingsmachine voor producten.
RU2167798C2 (ru) Устройство и способ подачи фольги
US3908343A (en) Imbricated bag loading machine
EP0036987A1 (de) Vorrichtung zur Handhabung und Zuführung von Massenwerkstoffen
US4545543A (en) Yarn feed device
US3933322A (en) Method and apparatus for the unwinding of bands
US4387842A (en) Bulk material handler and feeder
US5139206A (en) Wire prefeeder
US4076184A (en) Apparatus for reeling web- or strand-like material
US3593508A (en) Apparatus for imparting a predetermined value of twist to a material
US4079611A (en) Strip tension control system for the protection of fin tubing
US2214333A (en) Apparatus for and method of winding wire
US2945337A (en) Wrapping material web feeding mechanism
EP0068835B1 (de) Aufspulen von Bandmaterial
US3381913A (en) Synchronized coil unwinder and rewinder
US3648948A (en) Creel for rotatable bobbins
CA1134329A (en) Bulk material handler and feeder
US3625446A (en) Fabric dispenser
JP2003192233A (ja) 断線検知装置
JPH01316253A (ja) 帯状ゴムシートの巻返し装置における運転制御方法
JPS5919028A (ja) コイル材送給装置
US3348787A (en) Drive and drive control for supply rolls

Legal Events

Date Code Title Description
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

AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19811030

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19850503

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STEVENS, SAMUEL BENJAMIN

Inventor name: LYTLE, JAMES RICHARD, SR.