FR2607467A1 - METHOD AND MACHINE FOR PACKING A ROLL, IN PARTICULAR PAPER - Google Patents

Abstract

A ROLLER 1, WEIGHED ON A SCALE 11, IS MOVED BY A PUSHER 12 ON TWO DRIVE ROLLERS 2 WHERE IT IS DRIVEN IN ROTATION TO BE SURROUNDED BY Wrapping paper 9 GLUED BY A GLUER 14 THEN CUT BY A SHEAR 13. A FOLDER 3 FLAP ON THE ENDS OF THE ROLL THE EDGES OF THE WRAPPING PAPER. THE ROLLER 1, RESTING ON THE ROLLERS 2 IS LOCATED BETWEEN TWO PRESSURE PLATES 5 WHICH, AFTER THE ABOVE DISCLOSURE, APPLY AND GLUE EXTERNAL PACKAGING JUGS AGAINST THE ENDS OF THE ROLLER, ON THE SHAPED EDGES OF THE PACKAGE. USE TO INTEGRATE THE PHASES OF THE PACKAGING PROCESS.

Description

The present invention relates to a method for wrapping a roll,

  particularly a paper roll, a method in which a roll is conveyed by transport means to the packing station on rotating support rollers to a position in which the axis of the roll is approximately parallel to the axes of the rollers. carrier rollers, inner packing cheeks are placed on the ends of the roll, if necessary, the roll is rotated by means of a carrier roller drive, wrapping paper is unwound from a roll of paper by means of a pulling apparatus, passing through sizing and shearing units, into narrows formed by the carrying rollers and the roll, the wrapping paper is sheared and glued so as to constitute a strip-shaped package, and the excess wrapping paper, which protrudes beyond the ends of the roll, is folded by a folding apparatus onto the inner packing cheeks if it has been to

ends of the roll.

  The invention also relates to a machine

  packaging for carrying out the method.

  According to the prior art, the rolls of paper are packaged in stages in several

  successive, with manual or automatic control.

  The conventional technique has the disadvantage that successive machines take up a lot of space and, in manual operation, also require considerable manpower. Automation reduces labor requirements, but investment costs are too high for low-capacity production lines, and it remains

  impossible to reduce clutter.

  The object of the invention is to overcome the disadvantages of the prior art and to arrive at an entirely new type of method and apparatus for packaging

a roll.

  The basis of the invention is to place the packing press in conjunction with the roll wrapping machine, near the carrying rollers, so that the wrapping cheeks of the ends of the roll can be attached to the ends of the roll at the end of the roll. using the heating plates of the press, without taking out the roll of the

machine.

  More particularly, the method according to the invention is characterized in that a press fixes the outer packing cheeks on the flaps of the wrapping paper strip, folded over the ends of the roll to be wrapped, while the roll is still supported by the carrier rollers, that is to say while the roll is still in the packing machine

by which he was packed.

  In addition, the packaging machine according to the invention is characterized in that the press is associated with the frame so that the effective areas of the heating platens of the press coincide approximately, in the pressing position, with the vertical plane of symmetry of the longitudinal axes of the support rollers so as to place the packing cheeks on the ends of the roll without moving the roll to be wrapped

  out of the support constituted by the bearing rollers.

  The invention provides significant advantages.

  The apparatus according to the invention allows a single operator to carry out the entire packaging operation without having to move between the different packaging units. Compared to the constructions of the prior art, the apparatus has a substantially restricted space for its installation in the premises.

  existing ones with inexpensive modifications.

  As a result, the total investment is reduced and, compared to prior art constructions,

  packaging costs are lower.

  The invention is studied in detail below by means of the following exemplary embodiments, with reference to the appended drawings, in which: FIG. 1 represents, in side view and in section, a packaging line equipped with a machine packaging according to the invention; Figure 2 shows, in side view and in section, another type of packaging line equipped with a packaging machine according to the invention; - Figure 3 shows a side view and partially in section, a third type of packaging line equipped with a packaging machine according to the invention; - Figure 4 shows, in top view and partially in section, the packaging line shown in Figure 3; Figure 5 shows, in side view and partially in section, a fourth type of packaging line equipped with a packaging machine according to the invention; FIG. 6 represents a view from above and from

  section, the packaging line shown in FIG.

  FIG. 1 represents an embodiment

  possible of a packaging machine according to the invention.

  A conveyor 10 brings an unpackaged roll 1 into the axis of the packaging machine. The roll 1 is weighed on a scale 11 mounted under the conveyor 10. The operator of the packaging machine controls a pusher 12 which pushes the weighed roll 1, away from the conveyor 10, on the support rollers 2 of the packaging machine to the point where they are stopped by pushing stops 16 of the packaging machine. The support rollers 2 are mounted on a frame 6 supporting the support rollers. The frame 6 is itself mounted on a foundation 15. The operator stands on the side of the packaging machine, with two inside packing cheeks and, using arms 4 of the cheeks, he places them on the ends of the roll 1, thus starting the phases of automatic packaging and folding. Then, the support rollers 2 are rotated by a drive mechanism (not shown) and the wrapping paper 9 is unwound, by means of traction rollers 7, from rolls 8 of wrapping paper, via a shear 13 and a sizing group 14, to come into the constrictions formed by the carrying rollers 2 and the roll 1, until the shears 13 cut it when a sufficient length of wrapping paper 9 has been measured. Glue is applied to the wrapping paper 9 at an appropriate stage by means of the sizing group 14 which may be, for example, a hot melt glue application group or a sodium silicate application group ( soluble glass). A folding apparatus 3 folds, in a conventional manner, on the inner packing cheeks, the excess wrapping paper which extends beyond the ends of the roll 1. During the wrapping, the operator places cheeks on the trays. The press 19 is mounted on the same frame 6 as the support rollers 2 so that the centers of the round heating plates 5 are located approximately in the vertical plane of symmetry of the longitudinal axes of the support rollers 2. which prevents the roller 1 from being shaken when one

  will glue the outer packing cheeks to the roll.

  Once the wrapping and the gluing of the band have been completed, the operator waits for the roll 1 to stop rotating before sending to the press 19 a pressing command which sets the heating plates 5 in motion as far as possible against the ends of the roll 1 and to glue hot melt glue or other external cheeks on the ends of the roll. The roll 1 is then ready to be returned to the conveyor 10 by the pushing stops 16 for the rest of its transport, while the conveyor 10 brings a new roll 1 to push in.

the packing machine.

  Fig. 2 shows an embodiment in which the wrapping paper is fed from rolls of wrapping paper 8 placed on a carrier for pushing the wrapped roll i forward from the wrapping machine. packaging, that is to say towards the

right on the figure.

  Figure 3 shows in more detail the structure of a packaging machine. This embodiment is shown with only one roll of wrapping paper 8; however, it is conceivable that

can use more than one.

  FIG. 4 represents, in a view from above, the position of the carrying rollers 2 with respect to the group of

  folding 3 and the heating plates 5 of the press 19.

  The integration of the phases of the packaging process can be extended by installing a balance 11 between the frame 6 and the foundation 15 to avoid the disadvantage of having to weigh the roll on the conveyor 10. It is also conceivable that the shape of the trays heaters 5 can be rectangular, polygonal or oblong. Any other form may further be designed in so far as the areas of the heating plates 5 exerting pressure and heating coincide with the ends of the roll 1 for

  fix the cheeks in the correct position.

  As shown in FIGS. 5 and 6, the roll can also be brought into the packaging machine in a direction parallel to the axes of the carrying rollers 2 by means of a conveyor 17 with step progression, which requires the use of a side construction, with possibility of pivoting, for the heating plates of

  the press 19, mounted on a separate chassis 18.

  The typical capacity of the machine is 50 to 75 packs & the hour and the maximum weight of the rollers

  packaged is of the order of 6,000 kg.

Claims (5)

  A method for packaging a roll, in particular a roll of paper (1), wherein: - a roll (1) is transported by transport means (10, 12) to the packaging station on rotating bearing rollers (2) to a position in which the axis of the roll (1) is approximately parallel to the axes of the carrier rollers (2); - If necessary, place internal packing cheeks on the ends of the roll (1); - The roller (1) is rotated by means of a drive device of the carrier rollers (2); - wrapping paper (9) - is unwound from a roll of wrapping paper (8) by means of a pulling apparatus (7), via sizing (14) and shearing groups ( 13) in constrictions formed by the carrier rollers (2) and the roll (1); the wrapping paper (9) is sheared and glued to form a strip-like package and the excess wrapping paper (9), which protrudes beyond the ends of the roll (1), is folded by a folding apparatus, on the inner packing cheeks if it has been placed at the ends of the roll (1), characterized in that a press (19) fixes external packing cheeks on the flaps of the band wrapping paper, folded over the ends of a roll (1) to be wrapped, while the roll (1) is still supported by the carrying rollers (2), that is to say while the roll is still found in the machine to   pack by which it was packed.   2. Roll wrapping machine, in particular paper rolls (1), comprising: - a frame (6) mounted on a foundation (15); - Bearing rollers (2) mounted on the frame (6) and associated with a driving apparatus for supporting the roll (1) and driving it in rotation; supply means (7), mounted on the frame (6), for feeding the packaging material (9) into a constriction formed by the carrier rollers (2) and the roll (1); - sizing means (14) and shearing (13) for gluing the packaging material (9) thus brought and cut to the desired length; - a folding apparatus (3), associated with the frame (6) and the feeding means (7), for folding the excess of the packing strip which overflows the roll (1), and - a press (19) ) associated with the packaging machine and having heating trays (5) for attaching packing cheeks to the roll (1); characterized in that the press (19) is associated with the frame (6) so that the effective areas of the heating platens (5) of the press (19) are approximately aligned, in the pressing position, on the vertical plane of symmetry of the longitudinal axes of the support rollers (2) so as to place the packing cheeks on the ends of the roll (1) without moving the roll to be wrapped (1) out of the support   constituted by the support rollers (2).   3. Packing machine according to claim 2, characterized in that the press (19) is mounted on the chassis (6).   4. Packing machine according to any one of   claims 2 or 3, characterized in that the trays   heaters (5) are pivotably mounted sideways to allow the wrapping roll (1) to enter and leave the packaging machine   parallel to the axes of the carrying rollers (2).   5. Packing machine according to any one of   preceding claims, characterized in that   balance (11) is mounted between the foundation (15) and the   frame (6) for weighing the roll (1) to be packaged.