FR2631577A1 - Machine for cutting into strips, pasting down and winding posters for advertising panels with rotating prisms - Google Patents

Abstract

This machine for cutting into strips, pasting down onto cloth or adhesive and reconstituting in reels the posters intended for advertising panels with rotating prisms is characterised in that it comprises a support 1 for posters 2, a plate 6 for tacking and guiding the posters, means 10, 11, 12 for advancing each poster step by step, means 15 for applying the strip of cloth or adhesive to the poster, a means 13 for cutting the poster into strips over its entire width, a station 16, 17 for paying out the strip of cloth or of adhesive 21, a station 18, 19 for rereeling the strips of posters which are pasted down and connected end to end, means for monitoring, detecting and counting allowing correct progression of the feed, advancement, application, cutting and re-reeling phases which the machine carries out.

Description

Machine for cutting into strips, laminating and winding posters on rotating advertising panels.

 The present invention relates to a machine for cutting into strips, for laminating on fabric, or adhesive and for reconstituting in reels the posters intended for advertising panels with rotating prisms showing images or messages.

 We know that display panels with prisms of triangular section animated by a rotational movement and each face of which is provided with a fraction of poster allow, by successive exposure of all their adjacent faces, to reconstruct and show a first image, a second and a third image or message.

Currently, to fix and split the posters on the faces of the rotating prisms, we operate essentially in two ways
Either the complete poster is placed, using glue or adhesive, on all of the adjacent faces of the prisms and it is cut at the level of the interstices which said prisms reserve between them over their entire length.

 Or else the poster is cut beforehand into strips of width equal to that of the faces of the rotating prisms to place them one by one on said faces, using glue or adhesive applied beforehand either on the prisms or on the bands.

 It is easy to understand that these processes present not only technical difficulties, but also economic difficulties.

 In fact, all the operations are manual and consequently take a long time to carry out and require skilled labor, which generates a cost price and slows down the development of this type of display.

 The invention in question aims to eliminate all of these difficulties, by industrializing operations to make them easy, fast and efficient, in order to obtain the lowest cost.

 The machine object of the present invention achieves this objective by automatically applying the adhesive tape, cutting the poster into strips in line with the laminating and storage in reels of said strips connected at the end to facilitate removal on the faces of the rotating prisms of the advertising panels, for example by means of a reel adapted to receive said coils.

 To this end, the machine comprises a table for receiving a stack of posters provided with a lifting means, a jogging and guiding plate for the posters, means for advancing the posters step by step one after the other. other, up to a station for applying the adhesive tape by pressing means and cutting the strips by a knife driven by a reciprocating linear movement, a station for unwinding the adhesive tape and rewinding the strips of laminated posters and means for controlling, detecting and counting the progress of the machine.

 The machine is described below in more detail with the aid of drawings representing only one embodiment of the invention.

 Figure 1 shows schematically the machine in question in elevation.

Figure 2 shows a side view and,
Figure 3 is a plan view from above.

 In the drawings, the reference 1 designates the reception table for a stack of posters 2 provided with lifting legs 3 resting on a base 4. Hydraulic means, not shown, allow the table 1 to be moved vertically surmounted by a pal fear 5 to maintain the stack of posters 2 at the constant level of a plate 6 of the machine.

 The machine is supported by a base generally designated by the reference 7 on which the plate 6 provided with a selvedge guide 8 and the casing 9 containing the driving elements of cutting and rewinding.

 The posters are advanced by a pair of driving rollers 10 preceding a pair of guide rollers 11, one of the rollers 10 being controlled by a pneumatic ratchet 12, or a cam, allowing an alternative advance to the pitch chosen for the width of the poster strip to be obtained after cutting.

 In front of the casing 9 is mounted a circular knife 13 self-sharpening animated with an alternating linear movement along a rule 14.

 The machine further comprises a pair of pneumatic grippers 15, one of which is adjustable in spacing, which are located in front of the cutting device 13.

 At the top and to the left of the casing 9, as illustrated in FIG. 1, there is provided a reel for a first reel 16 and a second stand-by reel 17, each equipped with an end of reel detector.

 At the top right of the casing 9, there is provided a rewinder for a first coil 18 and a second coil 19. These coils are driven by motor hubs 20.

The ribbon 21 of fabric or adhesive coming from the reel 16, or 17 passes through a baffle of rollers 22 and tensioners 23 before being wound up, laminated to the cutting poster strip, on the driving reel 18 or 19 which has a nozzle 24 measuring the winding and a lateral retaining rod 25
The machine operates as follows
From the stack of posters 2 placed on the elevating table 1, the operator margins the posters one by one by turning them over so that their printed side is arranged below.

 A first poster is teased against edge 8 and in front stop. When the rear edge of the poster, during cutting, arrives at the stop, a second poster is abutted using a self-adhesive sticker, attached to the back astride the junction line of the two posters. This operation allows continuity in operation and no loss of paper thanks to the continuous traction of the driving rollers 10.

 The fabric or adhesive tape 21 is unwound from the spool 16 parallel to the cut and above the strip of paper to be cut. Thanks to the other coil 17, a quick connection can be made at the end of the unwinding. The large capacity of the reels 16, 17 of ribbon 21 decreases the frequency of replacement.

 The end of coil detector stops at the end of cutting and signals to the operator that the reel change must take place.

 Before the cutting is triggered, the two pneumatic clamps 15 secure the glued tape 21 and the poster strip which has just advanced.

 The cutting of the poster strip which has just received the ribbon 21 is made by the circular knife 13 moving in front of the rule 14 and over the entire width of the poster.

 The composite, strip-tape, is then pulled at high speed and is wound on the reel 18. The rewinding stop to operate the next phase, is obtained by the instantaneous disengagement of a drum of which the developed is a sub- multiple of poster widths. The number of revolutions is programmed on a counter of the PLC.

 A second counter warns the operator of the reel change when the number of bands, programmed according to the size of the poster, is reached. I1 then suffices to pass over the second coil 19, the hub of which is equipped in advance with an appropriate retaining member.

 thus cut and laminated, the poster strips are found end to end wound on the reel in a precise order.

 Thanks, for example, to a manual unwinder, the strips will then be fixed easily and without method on the faces of the prisms of the advertising panels intended to reconstitute them to show the images and / or the messages which they contain.

 The invention should not be considered as being limited to the embodiment shown by the drawings.

 In fact, it is possible to envisage replacing certain mechanical and control elements with others without departing from the scope of the invention.

 The machine which is the subject of the present invention is particularly well suited for laminating knitted or looped fabric on poster strips fixed to the rotating prisms of advertising panels by a self-gripping device as described in French patent application No. 88.06084.

Claims (10)

Claims  1 - Machine for cutting into strips, for laminating on fabric or adhesive and for reconstituting in reels the posters intended for advertising panels with rotating prisms, characterized in that it comprises a support (1) for posters (2), a plate (6) for jogging and guiding the posters, means (10,11,12) for advancing each poster step by step, means for applying (15) fabric tape or adhesive to the poster , a means of cutting (13) into strips of the poster over its entire width, a reeling station (16,17) of the fabric or adhesive tape (21), a rewinding station (18,19) of the strips of posters laminated and connected end to end, means of control, detection and counting allowing the smooth running of the feeding, advance, application, cutting and rewinding phases that the machine performs.  2 - Machine according to claim 1, characterized in that the support (1) of posters (2) is provided with lifting legs (3) maneuvered by mechanical or hydraulic means to bring the stack of posters at the level of the plate (6) jogging and guiding.  3 - Machine according to claim 2, characterized in that the support (1) is equipped with a probe (5) to maintain the stack of posters (2) at a constant level corresponding to the plate (6).  4 - Machine according to claim 1, characterized in that the plate (6) is provided with a selvedge (8) and a front stop, for jogging and guiding the posters.  5 - Machine according to claim 1, characterized in that it comprises a pair of driving rollers (10) preceding a pair of guide rollers (11) and that one of the rollers (10) is controlled by a ratchet or a cam authorizing the step-by-step advance of the poster towards the application and cutting station.  6 - Machine according to claim 1, characterized in that it comprises a circular knife (13) self-sharpening with an alternating linear movement along a rule (14).  7 - Machine according to claim 1, characterized in that it comprises a pair of pliers (15) one of which is adjustable in spacing, located in front of the cutting device (13) and carrying out the application of the ribbon of fabric or adhesive (21) on the poster strip (2).  8 - Machine according to claim 1, characterized in that the reel of fabric tape or adhesive (21) comprises a first reel (16) and a second stand-up reel (l7) equipped with an end detector coil.  9 - Machine according to claim 1, characterized in that the rewinding of laminated strips comprises a first coil (18) and a second standby coil (19) driven by motor hubs (20).  10 - Machine according to claims 1, 8 and 9, characterized in that the unwinding and rewinding are controlled by tension rollers (23) and baffles (22).