• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Unwinding arrangement for material webs which are consumed continuously by e.g. packing machines are provided frequently with an arrangement which brakes the roll so that it does not continue to rotate when the unwinding ceases. To made possible a well adapted braking, also in the case of thin, delicate webs or strips and heavy rolls, the unwinding arrangement in accordance with the invention is provided with a manoeuvring arm (8) adapted to be acted upon by the material, which in the event of changes in the web tension presses with varying force a rotatable braking appliance (13) against a brake drum (6) combined with the material roll.
    公开号:SU1623564A3
    申请号:SU884356896
    申请日:1988-11-02
    公开日:1991-01-23
    发明作者:Лессе Хокан
    申请人:Актиеболагет Профор (Фирма)；
    IPC主号:
    专利说明:

    Phie.1
    The invention relates to packaging equipment and relates to a device for unwinding tape material from a roll.
    The purpose of the invention is to increase the reliability of the device.
    Figure 1 shows the device, side view; figure 2 is the same, rear view; FIGS. 3 a device in different phases of the material feed.
    The device contains a rack 1, mounted on an appropriate packaging machine. The stand 1 is provided with a roller stand 2, which carries the shaft 3, which cantileverly protrudes from the stand 1. On the shaft 3 there are mounted a holder 4 rolls of material 5 and a brake drum 6 with a cylindrical outer surface placed between the stand 1 and the holder 4 rolls. Shaft 3 and drum 6 are mounted with the possibility of free joint rotation when unwinding the material. The device has a brake shoe for contacting the drum 6, which is made in the form of a roller 7 formed from a set of rings 8 made of an elastic material.
    The roller 7 is mounted on an elastic element in the form of a spiral spring 9 placed along the pivoting lever 10 in the gap between it and the shaft 3 of the holder 4 of the roll, while the diameter of the roller 7 exceeds the distance from the pivoting lever 10 to the generator shaft 3. The pivoting lever 10 spring-loaded spring 11, freely suspended on an axis 12 placed at the axis of the shaft 3, and made at the upper end with an inclined platform 13 for actuation with a brake shoe, a brake drum closing and opening the contact and a cooperative With a locking element 14. The spring 11 of the lever 10 is made spiral and fixed at one end in the adjusting bracket 15, and the other on the axis 16. The rotary lever 10 is connected with a spring 17 to the compensator 17 of the compensator
    18, carrying tension rollers 19, which form loops of material with rollers 20 mounted on a rack 1.
    The device works as follows.
    The roll with the packaging material 5 is mounted in the holder 4 and the tape of material is passed through successively through the guide rollers 20 and the tension rollers
    19. The unwinding of the tape occurs in conditions of a significant change in the speed of the tape stretching, and consequently, during sharp fluctuations of its tension, which directly affects the position of the tie.
    17 compensator 18 with rollers 19.
    When the tape of material 5 is unwound in continuous mode, the roll of material 4 rotates at a constant speed with low resistance to unwinding. The weight and length of the shoulder gi 17 are selected so that the belt of the material alternately moving along the rollers 19 and 20 can hold it 17 almost horizontally, with the brake pad, the roller 7 being in a free position at some distance from the outer surface of the brake drum b, as well as from the supporting platform 13 on the pivot arm 10. In this case, the brake pad does not perform the braking function and the brake drum 6 with a roll of material 5 can rotate freely with the speed of the tape material 5 removed from the roll.
    When the unwinding speed of the material slightly decreases, the roll of material 5 starts to rotate slightly faster due to inertia, resulting in some excess tape material 5 unwound from the roll, the tape is weakened to such an extent that the weight of the ha 17 drops down (hourly). mounts around the axis 12, and the vertical distance between the guide rollers 20 and the tension rollers 19 increases. As shown in FIG. 3, the coil spring 9 at the same time rotates the brake shoe so that it contacts the outer surface of the brake drum 6, whereby the brake shoe starts to rotate, deforming the ring 8 and creating a small roll resistance, which causes the shaft 3 slows down and the speed of rotation of the web material decreases. Great rolling resistance is a function of belt tension, and when the belt tension is slightly weakened, the coil spring 9 presses the brake roller 7 with great force, pressing it against the brake drum 6 so that the reformation of the rings 8 increases, and therefore and rolling resistance.
    When the packing wrapper is stopped or for some reason unexpectedly stops, or the consumption of tape material 5 is reduced, the ton ha 17 quickly turns clockwise to the position shown in FIG. 4. The brake shoe is pulled down by the coil spring 9 between the brake drum 6 and the upper end of the lever 10 so that it makes contact not only with the outer surface of the brake drum 6, but also with the bearing pad 13 of the lever 10. Due to this, eaie more brake brake pads and a strong braking effect is created on the brake drum 6. Since the distance between the nearest forming brake drum 6 and the support pad 13 is smaller than the diameter of the brake roller 7, it is possible by vuyuschego slope and shape of the support platform 13 to wedge braking roller 7 is completely between the base pad 13 and the outer surface of the brake drum 6. This allows completely block the brake drum and stop rotation of the roll. This is also facilitated by the fact that the roll rotates counterclockwise and, when in contact with the brake roller 7, tries to move it down towards the stuck position. In this case, even if any superfluid tape material is unwound, its damage in the event of an unexpected stop of the machine is practically excluded.
    When the machine starts up again, the tape material 5 is consumed, the material tension rises until the tension rollers 19 are raised up and the compensator 18 is not turned counterclockwise again, due to which the brake roller 7 is washed out of its engagement with the reference area and returns to the normal working position, which is defined between the position of weak contact with the brake drum 6 (Fig. 3) and the free position shown in FIG. one.
    If a sudden increase in the speed of the belt material 5 occurs, the belt is tightened and lifts the tension rollers 19 to the upper position shown in Fig. 5. When this happens, the brake roller 7 comes into contact with the locking element 14, which by means of the coil spring 9 gradually increases the resistance of the compensator 18 to further counterclockwise rotation, which is gently slowed down before the compensator reaches its brake position. As a result, twitching or uncontrolled tension jerks of the tape material are eliminated. As the rotational speed of the roll increases, the belt tension gradually decreases, the compensator 18 rotates clockwise to its normal operating position again.
    When the proposed device is used in ribbons of a particularly thin and weak material or when rolls of relatively large dimensions and weight are used. the device can be made more efficient and more responsive to unexpected
    reducing the belt tension by applying a tension spring 11 that tends to act on the lever, causing it to turn clockwise
    from the central position. The spring 11 is clamped so between the bracket 15 and the axis 16 that, under normal operating conditions (Figs. 1 and 2), it appears directly in front of the axis 12 of the lever 10. In the event of an unexpected decrease in the belt tension, the compensator 18 turns clockwise, the center of the spring 11 is shifted to the left of the axis 12 and the movement of the lever 10 will increase towards the braking or locking position
    (figure 4). Large coils are also effectively braked in a similar way, which effectively reduces any tensions of tape material.
    The proposed device, despite
    The simple and relatively inexpensive design allows an effective braking force to be obtained, consistent with the tension force of the material, which makes it possible to unwind even thin and sensitive varieties of tape from large rolls without the risk of tearing or stretching. The device is particularly suitable for use in packaging machines in which, during the continuous production of packaging
    containers of packing tape material at varying speeds consume a longitudinally docked tape of thin plastic material. Device wear is very small and
    it takes a little time to maintain it.
    权利要求:
    Claims (2)
    [1]
    1. Device for unwinding tape
    material containing the holder of the roll of material, on the shaft of which a brake drum is mounted with the possibility of joint rotation with it during unwinding of the material, a brake pad associated with
    a rotatable spring-loaded lever for closing and opening its contact with the brake drum and the compensator pull, carrying the tension roller for the material and connected with the rotary lever by means of an elastic element, characterized in that, in order to increase reliability in operation, the rotary lever is suspended on an axis placed at the level of the shaft axis of the roll holder, and made on the upper
    the end with an inclined bearing pad for contacting the brake pad, and the elastic element is designed as a spring placed along the pivot arm in the gap between the lever and the roll holder shaft and the brake pad at the upper end, the latter is in the form of a roller, the diameter of which the distance from the pivot arm to the forming shaft of the roll holder.
    [2]
    2. The device is pop.1, characterized in that the brake shoe roller is formed from a set of rings made of an elastic material.
    FIG. 2
    U
    Ј Matt
    99e391
    w
    go
    FIG. five
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1623564A3|1991-01-23|Device for unwinding tape material
    US4008114A|1977-02-15|Machine for wrapping tape on a pipe including improved means of controlling the tension on the tape
    US5671895A|1997-09-30|System and method for controlling the speed and tension of an unwinding running web
    EP0440246A1|1991-08-07|Strand braking apparatus
    US3482800A|1969-12-09|Tape transport apparatus
    RU2070858C1|1996-12-27|Device for delivering packing material roll
    US2984429A|1961-05-16|Single rollstand web handling machine
    US3720385A|1973-03-13|Constant tension winding apparatus
    US3604652A|1971-09-14|Roll sheeter for printing machine
    US2596428A|1952-05-13|Tensioning device
    US3491963A|1970-01-27|Thread delivery mechanism
    GB2026986A|1980-02-13|Web winding or unwinding apparatus
    KR19990063675A|1999-07-26|Film stretching mechanism
    US4076184A|1978-02-28|Apparatus for reeling web- or strand-like material
    JP2552330B2|1996-11-13|A pre-tensioning device that controls the feeding of the web from the supply reel before wrapping the web of stretchable plastic film around the item.
    SU797557A3|1981-01-15|Reeler for metallic web rolling
    GB2138400A|1984-10-24|Braking reel during unwinding
    US4134558A|1979-01-16|Brake construction for cloth-laying machine
    US2254255A|1941-09-02|Material unwinding, guiding, and tensioning structure
    US3982706A|1976-09-28|Winding machines having independent spindles
    US4176805A|1979-12-04|Unwind stand-roll brake
    CN215402065U|2022-01-04|A novel OPP examines article machine for film label
    US3275259A|1966-09-27|Supply roll brake
    US4449675A|1984-05-22|Fabric rewind system
    US3669370A|1972-06-13|Tape tension control apparatus
    同族专利:
    公开号 | 公开日
    AU2459288A|1989-05-04|
    DE3869552D1|1992-04-30|
    AT74103T|1992-04-15|
    SE8704283L|1989-05-04|
    JP2610320B2|1997-05-14|
    EP0315029B1|1992-03-25|
    AU614099B2|1991-08-22|
    CA1322359C|1993-09-21|
    JPH01156266A|1989-06-19|
    SE8704283D0|1987-11-03|
    ES2031209T3|1992-12-01|
    EP0315029A1|1989-05-10|
    SE463667B|1991-01-07|
    US4905927A|1990-03-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH473725A|1967-04-28|1969-06-15|Ciba Geigy|Device for winding and unwinding tape-shaped material|
    US3618870A|1969-02-17|1971-11-09|Gillette Co|Tension control apparatus|
    US3704820A|1971-05-03|1972-12-05|Burroughs Corp|Web tension control device|
    FR2192551A5|1972-07-11|1974-02-08|Etudes De Machines Speciales|
    JPS54147651U|1978-04-07|1979-10-13|
    AT379914B|1984-07-13|1986-03-10|Philips Nv|BRAKE DEVICE FOR A WRAPPING DEVICE FOR A RECORDING AND / OR PLAYBACK DEVICE FOR A TAPE-SHAPED RECORDING CARRIER|
    JPS61145059A|1984-12-18|1986-07-02|Hitachi Cable Ltd|Tape feeding device with constant tension force|
    JPS6277158U|1985-10-31|1987-05-18|
    GB2185241A|1986-01-10|1987-07-15|Benz & Hilgers Gmbh|Method and device for feeding a web of material from a roll|US5098029A|1990-06-01|1992-03-24|Eastman Kodak Company|Apparatus and method for minimizing web cinching during unwinding of rolls of web materials of indeterminate length|
    US5312059A|1990-06-18|1994-05-17|Hercules Membrino|Machine for rewinding and intermediately processing thin flexible material using a conveyor|
    US5562034A|1995-07-26|1996-10-08|Intermec Corporation|Media roll braking system for a thermal label printer|
    WO1998045202A1|1997-04-09|1998-10-15|Ellice Holdings Pty Ltd|Reel dispenser system for continuous sheet material|
    US6090034A|1998-07-02|2000-07-18|Martin Yale Industries, Incorporated|Tabber apparatus with removable shaft and retaining member|
    US20040038795A1|2000-03-10|2004-02-26|Jaksch John H.|Tabber apparatus and method|
    US6470656B2|2000-11-29|2002-10-29|Illinois Tool Works Inc.|Film delivery system for prestretched film|
    US6879725B2|2001-01-26|2005-04-12|International Business Machine Corporation|Method, system, and program for decoding a section from compressed data|
    US6540170B2|2001-07-23|2003-04-01|Illinois Tool Works Inc.|Multiple coil dispenser|
    ITMI20020120A1|2002-01-24|2003-07-24|Leone Felisi S P A|METHOD AND RELATED EQUIPMENT FOR DETENSIONING OF WIRES DURING A ROPE PRODUCTION PROCESS|
    US7007883B2|2003-02-05|2006-03-07|Adalis Corporation|Apparatus and method for dispensing elongated material|
    US7287717B2|2005-02-04|2007-10-30|Illinois Tool Works, Inc.|Strap dispenser with start assist|
    US7883047B2|2009-06-23|2011-02-08|Pai Lung Machinery Mill Co., Ltd.|Tension adjustment structure for fabric winding machine|
    EP3851401A1|2020-01-16|2021-07-21|Opti-Run GmbH|Device and method for unwinding and feeding cross-wound material and use of same|
    CN111746866A|2020-07-21|2020-10-09|龙岩烟草工业有限责任公司|Adhesive tape device for sealing box and box sealing method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8704283A|SE463667B|1987-11-03|1987-11-03|UNROLLING DEVICE CONSIDERING TEMPORARY MATERIALS INCLUDING A BRAKE DEVICE CONTROLLED BY THE POSITION TENSION|
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