FI57562C - APPARAT FOER INVIKNING OCH TILLTRYCKNING AV AENDARNA AV ETT RUNT EN PAPPERSRULLE LAGT RULLOMSLAG - Google Patents

Description

RSr ^ l ΓβΙ di) ADVERTISING PUBLICATION rrjrsry JSfS IBJ (11) utlAggNINGSSKRIFT 575 62 c (4S) fai-nlll '.y' 0 ... 1.:0 ^ ^ (51) Kv.lk//lnt.CI.^ B 65 B 11 / 04- FINLAND —FINLAND (21> PwenttlhelMmii * - PktMCaMttnliif 1119/72 (22) Hakamlspilvi — An * Bkningidt | 20.0 ^ .72 (23) AlkupUvt — Glttlfh «tsdt | 20.0U.72 (41) Tullut tulkbekil - Bllvit offtntllg 15.12.72 tantti, j. registry board Nihtivikslp ™ moonLjulkshun pvm.-

Patent. and register Styrelsen 'Amflktn utlmgd och utl. «krlft« n publlc.rid 30.05.80 (32) (33) (31) Pjrydattjr «tuolkaua — Begird priorltet lU.06.71

USA (US) 1527UU

(71) Beloit Corporation, Beloit, Wisconsin 53511, USA (72) James F. Becker, Wilmington, Delaware, USA (7U) S.A. The present invention relates to a reeling device according to the invention, which is generally described in the preamble of the appended main claim, and which has a special device for folding and pressing the ends of a roll wrapper placed around a roll of paper. identification part.

To date, there have been corrugators that bend down and compress opposite end portions of a wrapper around a roll of paper and extending past the ends of the roll using rotating pleating paws. These crimping paws are attached to the ends of vertically pivotable arms supported by frame structures extending quite far past the opposite ends of the roll stand, as in U.S. Patents 3,290,861 and 3 U-11,269. at the end, clogs the floor too much at both ends of the roll, and is difficult to adapt to different roll diameters.

The corrugator of the present invention is superior to the aforementioned corrugators in that the arms supporting the corrugation arms on the corrugation carriages are telescopically mounted relative to the carriages and can be retracted to provide space for a maximum diameter roll, and placed above the roll, in the middle 57 when not in use, thus leaving a free operating area around the wrapping drums without annoying obstacles.

In addition to the advantage that the invention frees the area around the wrapping drums from awkward obstacles, the invention also has the advantage that wraps of different diameters and lengths can be easily sealed against the ends of the rolls with minimal operator attention and without delays in roll lengths and - with varying diameters.

Accordingly, it is an object of the invention to provide a new and better type of corrugator for bending down and sealing the protruding ends of a wrapper against the ends of the roll, adapted to require very little, if any, floor space around the paper roll support and drive drums when not in use. has been built with extreme efficiency in corrugation and simplicity in design and operation and adaptation to varying roll diameters and lengths.

It is also an object of the invention to provide an improvement over the corrugators used hitherto by supporting the corrugation paws above the wrapped roll to be corrugated, and then lowering the paws down to the corrugation position.

It is a further object of the invention to provide a simple and improved type of corrugator in which the corrugator carriages are supported above the roll and the corrugator arms are telescopically mounted relative to the rollers for lowering along the roll ends, and having a device for stopping against and the roll is held in place against the action of the forces on the wrapping pawl wrap and the roll.

Other objects, features and advantages of the invention will become apparent from the following description of a preferred embodiment of the invention and the accompanying drawing, although changes and modifications may be made therein without departing from the spirit and scope of the invention.

Figure 1 is a schematic side view of a corrugator according to the invention supported above a roll of paper wrapped in the cross-machine direction.

Fig. 2 is a schematic end view of a portion of the corrugator of Fig. 1, illustrating the range of size of rolls that can be corrugated, showing the compression presses of the corrugator in contact with the circumference of a minimum diameter roll holding the roll against its support and drive drums.

Figure 3 is a fragmentary view of the corrugator showing the corrugator support beams in a cross-sectional view and the corrugator arm and paw protruding relative to the corrugator carriage.

Fig. 4 is a partial side view of the corrugator carriage and arm of Fig. 3, with the crossbeams removed.

Fig. 5 is a plan view from above of the corrugating carriage, substantially along the line V-V in Fig. 4 and rotated 90 ° clockwise from the position of Fig. 4.

Figure 1 of the drawing shows a corrugator 10 for bending down and folding in the outer parts of the wrapper extending past both ends of the roll 11, which may be a roll of paper. The paper roll 11 is shown in Figures 1 and 2 supported by spaced apart drums 12, which may be wrapping drums mounted for rotation about center lines parallel to the center line of the roll. The drums 12 are rotated in the same direction, and at the same uniform speed, to rotate the roll and wrap it in the paper web as the web passes through the nips between the roll and drums and are glued to the roll by applying glue to its front end in a manner familiar to those skilled in the art. The support and drive devices for the drums 12,12 may be of any conventional type and are not related to the present invention except that the drums act as a support and drive device for rotating the roll of paper around which the wrap is wrapped against the ends of the roll. Thus, there is no need to further illustrate or explain the support and drive devices of these drums.

The corrugator 10 generally includes a cross beam 13 suitably supported at some distance above the largest diameter roll to be wound and extending in the transverse direction of the machine past both ends of the largest roll to be wrapped, supporting two corrugated carriages 15 and corrugated carriages 15 and corrugated carriages. mounted telescopically with respect to said crimping carriages, to provide space for a roll of maximum diameter to be wrapped and crimped and to move the paws past the ends of the roll having the largest width to bend and enclose the ends of the wrap projecting past the opposite ends of the roll.

4 57562

The corrugated paws 16 are shown in the drawing as disc-shaped and may be similar to the corrugated paw shown and described in U.S. Patent 3 * »11 269 so as to include corrugated vanes 18 projecting from the center of the paw and having a shape and pitch that bends down and enclose the protruding ends of the wrapper as the crimping vanes rotate along opposite ends of the roll in a crimping or crimping direction opposite to the direction of rotation of the wrapped roll.

The cross beam 13 is shown in Figures 1 and 3 as two hollow box-like beam portions 19 connected at opposite ends by end frame members 20. The cross beam 13 may be supported at opposite ends by suitable pillars (not shown) forming part of the structure, or by any other suitable support a sufficiently rigid support to support the two corrugation carriages between said cross member and said beam portions against the effect of corrugation forces.

The corrugating carriages 15, the corrugating arms 17 and the corrugating paws 16 and their operating and control devices are each similar in construction, so that only one of each pair is shown and explained in detail.

As shown in Figures 1 and 3, the support plates 21 extend along the upper sides of the beams 19 and inwards towards the center line of the beam, and along them extend the racks 22. Each rack interlocks with the gears 23 at the ends of the transverse shaft to move the carriage along the racks. The shaft 2k is suitably mounted on bearings (not shown) of bearing housings 25 projecting from the end wall 26 of the frame of the carriage 15, as shown in the carriage.

Each carriage 15 is supported and guided by a guide plate 27 which is welded or otherwise fixed to the bottom of the respective cross-beam part 19 and extends inwards therefrom parallel to the support plate 21 at a distance therefrom. The guide plates 27 extend from the outer end of the beam part 19 towards its center inside the beam part and are in contact with support rollers 29 located at each end of the carriage and suitably attached thereto and mounted on suitable bearings (not shown) to rotate freely relative to the carriage. Rollers 30, such as rollers 29, are arranged some distance below the rollers 29 at them and are in contact with the underside 5 57562 of the guide plate 27 to prevent the carriage from tilting relative to said guide plates.

The vertical rollers 31 are suitably mounted on the undersides of the horizontal supports 32 suitably fixed to the carriage frame wall 26 and positioning said rollers between the rollers 29 and 30 in contact with the inner edges of the guide plates 27 so as to prevent lateral movement of the carriage relative to the box-like beams 10. ). The rollers may be attached to hang from the horizontal branches of the supports 32 on a conventional shaft (not shown) and a roller, or other bearings which bear the rollers to rotate freely relative to said supports. The supports 32 and the vertical axis rollers 31 they support are at each end and on each side of the carriage as shown in Figures 3, 4 and 5 and are in communication with each pair of rollers 29,30.

The drive of the gears 23 of each carriage 15 for moving the carriages in and out along the crossbeam 30 is shown in the drawing as a motor 33 suitably mounted on the carriage frame wall 26 and having a motor shaft 36 to which a sprocket 37 is operatively connected to the shaft. 24 with the sprocket 39 via the endless chain 40. The motor 33 may be of any suitable type and is shown here as an air motor of a conventional type. Attached to the end wall 26 is a brake support 41, from which protrudes outwardly from the wall a support arm 42 to which a brake 43 is attached to brake the shaft 24 and prevent the carriage 15 from going too far along the cross member 13. The brake 43 can be of any suitable type. The air brake, known as the "Fawick Brake," manufactured by the Fawick Air Flex Division of Eaton Yale & Towne, Inc., is a satisfactory brake for stopping the carriage up to the crossbar 13. There is therefore no need to explain the brake further here.

Each vertically movable corrugating arm 17 is mounted on the respective carriage frame 65 so that it can move telescopically relative to the frame, and supports a transverse corrugating beam 49 near its lower end to which a forced corrugating beam 16 is attached. Telescopic arm 17, crossbar the attachment to said crossbeam and the mechanism of operation of the crimping paw are explained in more detail below.

At the end of the crimping delivery, the crimping pawl 16 is retracted by the retraction movement of the crimping arm 17 to its position above the upper surface of the largest diameter crimped roll. Both carriages 15 are then moved inwards along the cross member 15 against a buffer 51 at the transverse center of the cross member which forms the abutments for both carriages. As the carriages 15 approach the bumper 51 »they trip the limit switches 53» which stop the motor 33 and cause the brake 43 to operate so that the inward movement of the carriages stops (Figure 1).

The downward movement of the corrugation arm 17 and the corrugation pawl 16 is stopped by an articulated guide arm 50 articulated so as to extend below the corrugation arm 17 and come into contact with the roll to be corrugated, and acts on a limit switch 56 cm. from the surface of the roller. Triggering this limit switch also initiates the outward movement of the carriages, outside the ends of the roller. The feeler arm 50 is loaded and forces the protruding portion of the wrapper down, triggering the limit switch 56 and thereby stopping the outward movement of the carriages and allowing the downward movement of the corrugation arm 17 and the corrugation pawl 16 to restart as will be explained in more detail below.

With respect to the details of the crimping carriage 15 and the crimping arm 17 mounted for telescopic or reversing motion with respect to the open rectangular vertical crimp frame 65, Fig. 5 shows the crimping arm 17 as a rectangular, box-like arm 57 or beam supported , which according to the figure is an open vertical cylinder. As shown in Figs. The support arms 59 and 60 projecting angularly inwards from opposite sides of the corrugating arm act on the freely rotating guide rollers 6l and 62 as supports. The rollers 6l and 62 have cylindrical contact surfaces at right angles to each other. At least four sets of supports 59 and 60 and rollers 6l and 62 are arranged at vertical intervals along the corrugation arm 17 in rolling guide contact with guide rails 63 projecting radially from the circumference of the corrugation arm slider 57. As shown in Fig. 5, the rollers 61 are in contact with the outer surfaces of the guide rails 63 and carry the reaction loads applied to the corrugation arm during corrugation delivery. The rollers 62 are in contact with the outer surfaces 64 of the guide rails 63, which are at right angles to the contact surfaces of the rollers 6l, and prevent the relative lateral movement of the corrugating arm 17 with respect to said load arm slide.

The pleat arm slider 57 is guided for telescopic movement by vertical slides 66 diametrically opposed to the frame 65 of the carriage 15, which are arranged along the inner sides of the opposite side walls of the carriage frame 65. Each slide 66 has two rectangular slide surfaces 67 »which, from their common edge, extend away from each other towards the wall of the carriage frame and are in contact with rollers 69 and 70 supported by roller supports 71 projecting diametrically from the crimp arm slider 57 and supporting rollers 69 around the center lines which are at right angles to each other. A series of rollers 69 and 70 may be arranged at suitable intervals along the slider of the corrugation arm so that the slider can move freely vertically but remains in position during the corrugation delivery and in its various positions relative to the carriage frame 65.

Inside the corrugation arm slide 57 there is a concentric vertical cylinder 73. The cylinder 73 has an open lower end extending generally inside a cylindrical support member 75 from which a tongue 76 protrudes downwards. and suitably attached thereto. Inside the cylinder 73 is a piston rod 80, the inner end of which has a piston (not shown) sealed to slide relative to the inner wall of the cylinder. The piston rod 80 pierces the end 8l and the sealing sleeve 82 and a screw 86 with a shoulder is screwed into it, which pierces upwards. The screw is equipped with a suitable device for locking it to the piston rod. The shoulder screw 86 and the piston rod 80 are supported by an upwardly open cup-shaped support member 83. This support member is attached to the carriage frame 65 by diagonal support arms 8¾ which engage inwardly from opposite inner walls of the carriage frame 65. Although only two support arms 85 are shown in the drawing attaching the cup-shaped support member 83 to the carriage frame, a third support arm (not shown) at an angle of substantially 120 ° to the support arms 85 may further be connecting the support member to the carriage frame. A shoulder screw 86 screwed to the upper end of the piston rod 80 acts as a seat for a self-extending sleeve 84 end-to-end with the shoulder of said shoulder screw in a cup-shaped container formed by a support member 83.

8 57562

The two pairs of lateral sprockets 88 spaced laterally are attached to the sprocket shafts 89 on either side of the crimp arm slider 57. to rotate. The sprockets 88 extend into the open portions 91 in the wall of the crimp arm slider 57 and run double chains 93, which may be double roller chains passing over the sprockets, across the crimp arm slider 57 through the open portions of the crimp arm, and down from the second sprocket arm. to a chain anchor 91 * »projecting upwardly from the anchor plate 95, which extends across the hollow interior of the corrugation arm 17 and is welded or otherwise attached thereto. The chains also extend downwardly from opposite sprockets 88, to a chain anchor 96 supported by a tongue 97 attached to and projecting inwardly from the inner wall of the carriage frame 65. The chain anchor 96 is fixed to the tongue 97 by a threaded shaft 99 * Said threaded shaft pierces said tongue and is adjustably locked to it by locking nuts 100.

The slide 57 of the corrugation arm and the corrugation arm 17 are shown in Figures 3, 4 and 5 in their upper telescopic or retracted positions. When it is desired to push said crimp arm and the crimp arm slide out relative to the carriage frame 65, the pressure medium is released from the piston rod end of the cylinder 53. The corrugation arm and the slide of the corrugation arm then move downwards under the influence of gravity, taking into account that the piston head of the cylinder 73 is open. The downward movement of the corrugation arm and the corrugation arm slider is stopped by the switch arm, as previously mentioned and as will be explained later.

When it is desired to raise the corrugation arm slide and corrugation arm relative to the paper roll and telescop the corrugation arm and slide into carriage frame 65, pressure medium is applied to the piston rod end of the cylinder so as to apply upward pressure to slipped compared via chains 93. The upward movement of the corrugation arm is limited by a limit switch 98, the control arm 102 of which is triggered by a trip plate 10U at the upper end of the corrugation arm 17. Along with the crimp arm slider 57 and the cylinder 73, the upwardly moving sprockets 88 and sprockets raise the crimp arm 17 two centimeters for each centimeter of upward movement of the cylinder 93 in a manner that will be apparent to those skilled in the art.

The transverse crimp beam 49 is located below the bottom of the carriage frame 65 when the crimp arm 17 is in its retracted position and extends past the crimp arm 17 and the second wall of the carriage 15 to form a protruding bearing bracket for the crimp paw 16. As shown in Figures 3,4 and 5, the crimping pawl 16 is wedged or otherwise attached to a shaft 101 extending through opposite side walls of the crimping beam 49 and mounted on said crimping beam, a housing 103 spaced apart by bearings 105 bearing the shaft 101 and the crimping pawl 16 rotating about a center line spaced from and parallel to the center line of the roller 11. At the outer end of the shaft 101, a compression wheel 106 is mounted to rotate freely relative to the shaft, which projects in the axial direction from the crimping pawl 16 and, as shown in the figure, is partially embedded therein.

The housing 103 has a shelf 107 which protrudes from its end, which acts as a support for the set screws 108 which protrude upwards and which have pivoting ends 109 which support the support plate 110 of the motor 111, which motor may be an electric motor. The motor support plate 110 is hinged to the corrugation beam 49 from the opposite edge of the set screws 118 by a hinge 112, as a result of which the V-belts 113 acting as transmitters between the motor 111 and the shaft 101 and the corrugation pawl 16 can be tightened. The belts 113 may be marked "Woods". The drive comprising the V-belts 113 between the motor 111 and the shaft 101 includes a motor shaft 114 to which a V-pulley 115 is wedged or otherwise attached. The V-pulley 115 may be an adjustable V-pulley to vary the rotational speed of the crimping paw if necessary. The V-belt pulley 115 can be of any conventional type and does not per se fall within the scope of the invention, so it need not be further explained here. The V-belts 113 are in drive interlocking on a V-pulley 116 suitably mounted on a shaft 101 for rotating said shaft and crimping pawl 16.

On the opposite side of the center wheel of the roller 11 from the pinion wheel 106, at the same distance from the centerline of the roll 11 as the pinion wheel 106 is the pinion wheel 119. The pinion wheel 119 is mounted so as to be limited in movement up and down against the paper roll. This movement is sufficient to trigger the limit switch 120, indicating that the corrugator is in the correct position and ready for corrugation. The two pressure wheels 106 and 119, which are in contact with the paper roll at both ends at equal distances on either side of the roll centerline, thus "stand" on the roll of the roll and hold it firmly in place so that it does not move under the forces exerted by the blades. are applied to the roller.

The pinion wheel 119 is freely mounted on a shaft 121 attached to the end of an articulated arm 122 articulated to a pivot shaft 123 projecting from a crimp beam 49 and parallel to the shaft 121. A screw 124 is attached to the end of the shaft 123 to retain the shaft 127 of the nut 124. A sleeve 129 is attached below the arm 127 (Figure 3). A retaining screw 130 is threaded into this sleeve to limit the downward movement of the pinion wheel 119. Mounted above the arm 127 is a sleeve 131 »into which a stop screw is screwed, which restricts the upward movement of the pinion wheel. At the free end of the switch arm 126 of the limit switch 120 is a follower roller 128 which rests on the upper surface of the arm 127 and triggers the limit switch 120 indicating that the corrugator is in the correct position and ready for corrugation.

According to Fig. 3, the guide arm has a hub 133 »between its ends, which is attached to the shaft 135 of the torsion resistance starter 136, on which the arm can pivotally turn into contact with the upper surface of the roller. A follower roller 137 is rotatably mounted at the end of the guide arm 50 which contacts the surface of the paper roll 11 as the crimp arm 57 pushes down, triggering the limit switch 56 and stopping the crimp arm and crimp paw lowering movement and starting the crimp arm out.

The torsion resistor starter 136 may be a rotating torsion resistance motor, such as an air motor, which presses the follower roller 137 into contact with the top surface of the paper roll and forces the protruding portion of the wrapper down as it passes the end of the roll. The end of the arm 50 opposite the follower roller 137 can move in the slot 139 in the outer wall of the telescopic arm 17, and is in contact with the trigger arm 140 of the limit switch 56. When the follower roller 137 comes into contact with the surface of the paper roll 11, the arm 140 is released, stopping the lowering movement of the creasing arm and the creasing paw about 2.5 cm from the surface of the paper roll. This limit switch, which stops the lowering of the pleat arm and the pleat paw

Claims (14)

An apparatus for folding and pressing the ends of a roll wrapper which is wrapped around a roll of paper and projecting beyond its opposite ends, comprising a structure with a roll stand for supporting and rolling the paper roll in rotation of the TV4 along the roll ends movably mounted rotatingly paddle-type folding rotors whose rotational axes extend parallel to the rotary axis of the paper roll and which are stored in folding assemblies which are movably arranged above the paper roll, which are vertically slidable and which are vertically displaceable, each of which is characterized by ) as well as a telescopic-shaped vertical displaceable pouring arm (17) for the folding rotor (16), and that the waveguide guides comprise guide rails (27) p4 a cross-beam structure (13), the carriages with retractable shelf arms being displaceable to a securely mounted (11), in which position its end surfaces become free a. 2. Apparatus according to claim 1, characterized in that the head arms (17) are provided with means (106, 119) for limiting the downward movement of the arms along the end surfaces of the roller (11) and for holding the roll on. position against the action of the forces exerted by the folding rotors (16) p4, and the means thereof, during the downward movement of the pouring arms, are brought down to abut the paper roll at each end thereof and p4 equally spaced from and on both sides thereof. the longitudinal centerline of the roll at the crown of the roll. 3. Apparatus according to claim 2, characterized in that they are mounted on. the holding arms (17) arranged for limiting the downward movement of the arms and for retaining the roll (11) p4, comprise a pair of pressure wheels (106, 119). Apparatus according to claim 3, characterized in that one of the pressure wheels (119) is movably mounted so that, when the same is applied to the roller (11), it performs a limited movement and thereby switches a limit positioner (120) so that thereby interrupting the down-eating movement of connected pouring arms (17) and folding rotors (16). 5. Apparatus according to claim 3, characterized in that a sensing means (50, 56) is arranged on each of the pouring arms (17), which actuate a limit positioner (56) which triggers the movement of the carriage (15) at the contact speed of the paper roll (11). from the exit position in the middle to the ends of the paper roll, Apparatus according to claim 5, characterized in that each sensing means comprises a pivoting arm (50) pivotally attached to the lower end of the pouring bar (17), and that a running pulley (137) is provided on the free end of the pivoting arm (1). 15) movement leaking abuts against the paper roll (11) with a predetermined, elastic abutment pressure. 7. Apparatus according to claim 6, characterized in that the downward movement of the pouring arms (17) can be triggered again, since the running blades (137) at the end of the movement of the carriages (15) leak out lose contact with the paper roll (11) and by their elastic abutment pressure. down the protruding end portions of the cover. 8. Apparatus according to claim 7, characterized in that the elastic abutment pressures (137) of the running blades (137) fixed to the actuating arms (137) are obtained by means of a compressed air driven torque motor (136) which actuates the pivoting arm's pivot axis (135). 9. Apparatus according to claim 8, characterized in that the actuating arm (50) is pivotally mounted at a location between its two end ends, and that the opposite end of the arm (137) is arranged to adjust the limit switch (56) when the actuator is applied. against the surface of the roller (11), to stop the downward movement of the connected pouring arm (17) and to start the outward movement of the connected carriage (15), and to reverse the limit switch where said torque motor (136) depresses the running blade from the edge surface of the roller to stop the end of the roller. the outside movement of the carriage and the downward movement of the pouring arm of the pouring arm and the associated folding rotor (16). 10. Apparatus according to claims * + and 9, characterized in that where the pressure wheel (119) abuts against the paper roll (11), a motor (111) for the folding rotors (16) can be activated.