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
  • B65H19/00—Changing the web roll
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
  • B65H19/1842—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact
  • B65H19/1852—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact taking place at a distance from the replacement roll
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H19/00—Changing the web roll
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
  • B65H19/126—Lifting, transporting, or inserting the web roll; Removing empty core with both-ends supporting arrangements
• • 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
  • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
  • B65H23/0204—Sensing transverse register of web
  • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
  • B65H2557/50—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves
  • B65H2557/51—Laser

Definitions

• the present invention relates to the field of machines for continuously unwinding and rolling web materials, in particular machines for unwinding rolls of paper or cardboard, for the purpose of feeding a machine downstream and for the purpose of a method of positioning strips and coils for connection to a machine to unwind.
• the invention also relates to a device for implementing this method.
• a new coil is placed on hold on the second unwinding pin of said unwinding machine.
• the beginning of the strip of this new coil must be positioned so that it is correctly aligned both laterally and angularly with the finishing band.
• the new coils and strips are pre ⁇ positioned by the operator with the aid of graduated strips arranged on the spindle carrying the spool and on the preparation zone of the beginning of the band waiting for connection.
• the operator will slide the spool onto the spindle until the end of the mandrel, made of cardboard or other material, of the spool is placed in close proximity.
• a reference 600 mm corresponding to the graduated ruler of the spindle bearing said spool, so that the side of the heart-of-the-coil is placed -the-most-possible-in front of the reference 600 mm corresponding, that is, aligned with this marker.
• the operator will unroll a sufficient length of the new band that will have in front of the reference 600 mm of the ruler graduated from the holding zone of the beginning of this new band. In this way, an apparently correct alignment is achieved between the new reel and the unrolling machine and the new web will be able to scroll in the unwinding machine without risk of slanting.
• the new coil has a defect in shape, for example when the flank at the outer diameter of the coil is not plumb with the flank at the inside diameter, then the beginning of the new strip may be placed, in the preparation zone of the beginning of the strip, at an angle to the longitudinal axis of the machine. This results in malfunctions, including longitudinal folds that can cause breakage of the tape running or damage the main part of the production line.
• these sensors do not emit a visible light beam for materializing a position, that is to say, allowing an operator to perfectly locate a vertical plane, in which the edge of a
• US Pat. No. 5,133,511 describes a positioning method consisting of measuring the position of a band by means of a a position sensor and a CCD camera which, as a function of the number and the position of the activated pixels of the sensor, informs a control and control member on the position of the strip.
• This method uses a light source which is a lamp illuminating the area filmed by the CCD camera and is not adapted to the materialization of a position by issuing a line of light.
• US Pat. No. 4,131,206 also discloses a method of positioning strips, in which the strip is moved laterally until a light flux of a light beam emitted by a light source is intercepted and picked up by a receiver.
• This method uses a means of the photoelectric barrier type, the source of which is not intended to materialize a position on the tape, but to illuminate a receiver informing a controller on the position of the tape.
• the present invention aims to overcome the disadvantages of known methods and devices by providing a method of positioning strips and coils for connection to a machine to unwind and a device for implementing this method to ensure a perfect alignment between the finishing band and new band and a strip unwinding without longitudinal folds by performing a set of operations entirely under the control of an operator verifying the position, without implementation of complementary electronic control means and / or complex and expensive computer
• the method according to the invention is characterized in that it consists in materializing, at the outer diameter of a coil, by means of a light beam emitter of visible light by an operator and without setting implementing an active receiver, the position at which the sidewall of said coil must be positioned relative to the longitudinal axis of the unwinding machine.
• the invention also relates to a device for implementing this method, which is characterized in that it consists essentially of at least one light beam emitter in the form of at least one linear beam or less a light plane of visible light by an operator, said transmitter cooperating with a means
• Figure 1 is a side elevational view of a unwinding machine equipped with the device implementing the method according to the invention
• Figure 2 is a partial perspective view of the device for implementing the method
• FIG. 3 is a view similar to that of FIG. 2 showing a means for controlling the alignment of the strip moving with respect to the longitudinal axis of the unwinding machine
• FIG. 4 is a view similar to that of Figure 2 showing an alternative embodiment of the implementation device of the method.
• FIG. 1 of the accompanying drawings shows a machine for unrolling rolls of paper or cardboard for feeding a downstream machine such as a printing machine or the like, this machine consisting essentially of a frame 1 of support means 2 coil holder 3, movable transversely to the longitudinal axis of the machine, and possibly a tape accumulation device 4 and a set 5 of preparation of a new tape to connect and of joining this band to a finishing band.
• a device which consists essentially of at least one emitter 6 of light beam in the form of at least one linear beam or at least one plane luminous light visible by an operator, said transmitter-cooperating with a passive-indexing means 7, -74 ( Figures 2 and 4) provided on the assembly 5 for preparing a new band to connect and junction from this band to a finishing band, without implementation of an active receiver.
• the positioning of strips and coils for the purpose of connection consists in carrying out the loading of a spool 3 on the free spindle of a means 2 for a spool holder until reaching a corresponding mark 9 (FIGS.
• the passive indexing means 7 is constituted by a graduated ruler mounted on the assembly 5 for preparing a new strip to be connected and joining this tape to a finishing tape. It is also possible to realize the passive indexing means 71, as shown in Figure 4 of the accompanying drawings, in the form of a mounting bracket of the transmitter 6, this support being provided with positioning marks 71 'corresponding to markers 700 'of a strip 700 for checking the position of the new band of a set 5 for preparing a new band to be connected and joining this band to a finishing band.
• This support forming the passive indexing means 71 may be designed as a guide provided with mark positioning markers or in the form of a guide provided with a digital display means beyond the position A as a guide.
• the loading of the reel 3, for example a width of 600 mm on the spindle of the means 2 can be performed at the corresponding 600 mm mark provided as reference 9 and the positioning of the transmitter 6 will then be performed on the corresponding reference 600 mm provided on the graduated strip forming the passive indexing means 7 ( Figure 2) and mounted on the assembly 5 for preparing a new band to be connected and for joining this band to a finishing band and said new band is aligned laterally in coincidence with said visible light beam emitted by the transmitter 6.
• the new band is perfectly aligned with respect to the axis of travel of the machine and with the finishing band, so that no longitudinal fold can be created after connection.
• the emitter 6 can emit a linear beam or a light plane, or two intersecting light planes arranged for example at 90 degrees to one another, so that the resulting trace visible on the periphery of the coil 3 is respectively : a point, a line or a cross.
• the transmitter 6 may be provided with a prism or dividing mirrors of its light beam.
• a part of the latter may be directed on the periphery of the spool 3 and the other part may be directed to the holding area of the beginning of the strip in the assembly 5 for the preparation of a new connecting strip and joining this band to a finishing strip, by passing on a graduated ruler 7 ( Figure 2) located in this holding zone.
• the device may comprise two transmitters, one directed to the coil 3 and the other to the holding zone of the assembly 5 of
• the emitter 6 is preferably selected from the family of laser diodes, but any other strongly convergent light source may be used.
• the unwinding machine described in connection with the present invention is symmetrical to allow the new spool 3 to be located to the right or to the left of the vertical center axis of the machine. Indeed, when the reel 3 being rewound is placed to the right with respect to the median vertical axis of the machine, then a new reel 3 is placed to the left of this axis and the end of the strip of this new reel is prepared and placed in the holding zone to the left of this axis, in the assembly 5 for preparing a new band to be connected and joining this band to a finishing band. Then, when the unwinding reel 3 arrives at the end of the tape, the finishing tape is connected with the new tape.
• the old coil 3 on the right which is empty or almost empty, is evacuated and replaced by a new coil 3 located this time on the right.
• the operator of the machine will proceed to the good positioning of the new tape-Gett & reel -3 by means of the positioning device according to the invention, this simply by a visual control of the position of the visible light beam. issued by the issuer 6, in combination with the medium passive indexing 7 or 71, without implementation of a verification means such as a sensor.
• the operations will follow one another in this way by alternately using the right and left positioning devices of the machine.
• This device according to the invention makes it possible to ensure perfect angular positioning between the moving web and the web in preparation. However, there may still be a slight lateral misalignment, due to a lateral defect on the reel being scrolled.
• This lateral guiding device 8 is disposed downstream of the connection zone of the assembly 5 for preparing a new band to be connected and joining this band to a finishing band and slaving the lateral position of the band being formed. scrolling with respect to the longitudinal axis of the machine.
• the lateral guiding device 8 is advantageously in the form of a means for controlling the lateral position of the strip with respect to the longitudinal axis of the machine informing a central unit of the position side of the strip and which consists of a set of two optical cells 8 ', 8 "arranged next to each other near an edge of the strip and slightly spaced laterally with respect to the longitudinal axis
• This device 8 may be arranged on the left side of the strip, when an observer observes the machine to unroll from the front, the downstream machine being arranged in extension of the strip.
• the correct position of the band is obtained when only one of the cells 8 ', 8 "is activated
• the displacement of the carriages 2 reel carriers is carried transversely to the longitudinal axis of the machine to unwind by means of electric motors, in a manner known per se and is not described in detail. The reel carriage is moved in such a way that the moving web is automatically re-centered.
• the lateral guiding device 8 By combining the lateral guiding device 8 with the emitter 6, it is possible to maintain, on the one hand, an optimal lateral position of the moving web and, on the other hand, to ensure that the position of the web the new reel 3 will be in alignment with the old tape and will run without creating longitudinal folds.

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• Replacement Of Web Rolls (AREA)
• Manufacturing Of Electrical Connectors (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=34951237

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (13)

• 2004
  • 2004-11-10 FR FR0411993A patent/FR2877655B1/fr not_active Expired - Fee Related
• 2005
  • 2005-11-04 EP EP05814793A patent/EP1809558B8/de active Active
  • 2005-11-04 US US11/667,353 patent/US20090057476A1/en not_active Abandoned
  • 2005-11-04 AT AT05814793T patent/ATE393111T1/de not_active IP Right Cessation
  • 2005-11-04 DE DE602005006306T patent/DE602005006306T2/de active Active
  • 2005-11-04 WO PCT/FR2005/002753 patent/WO2006051194A1/fr active IP Right Grant
  • 2005-11-04 ES ES05814793T patent/ES2306253T3/es active Active

Non-Patent Citations (1)

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