FR2676195A1 - METHOD AND DEVICE FOR DRIVING A BELT IN A FOLDER OF A PRINTING MACHINE. - Google Patents

Abstract

A method and a device for providing an orderly movement of a web (1) in a folder, the method comprising forming by punching in a laminate structure formed of surface portions of web mutually superimposed, along their respective edges (13) , several tab-shaped elements (16 ') remaining bonded to the surface portions of the strip and protruding through respective holes (16) punched simultaneously in said surface portions of the strip so as to thereby hold the strip portions in their respective edges, which makes it possible to hold together the surface parts which will then form the pages of a copy in the printing machine.

Description

The present invention relates to a method and a device for ensuring a

orderly displacement of

  tape in a folder of a printing machine.

  There are known devices which are mounted on cylinders in folding machines and which act on strips of paper moving as far as the respective folding machines. For example, one or more cutting blades are mounted on the outer cylindrical surface of a cylinder. cutting part of a pair of cylinders comprising a grooved cylinder, while one or more rods or rubber bars, depending on the number of cutting blades, are arranged

  on the outer cylindrical surface of the grooved cylinder.

  According to Petty's German patent no. 87 12 804 7, a device is known for performing,

  for example, an imprint of perforated lines, arranged

  tif in which perforation blades can be locked hydraulically in a given position The perforation blades act on the strip located in the folder over the entire width of the strip and produce by punching in the strip a line of

  perforations extending perpendicular to the direction

  advancement of the tape, in correspondence with

cylinder diameter.

  On the basis of this prior art, an object of the invention is to propose a method and a device for ensuring an ordered displacement of tape in a

  folds in a better way than before.

  To achieve this objective, and others, it is proposed, in accordance with the invention, a device for ensuring an ordered movement of the tape in a folder, this device comprising at least one cylinder

  cutting blade, at least one cutting blade mounted on the cylinder

  dre cutting, a grooved cylinder arranged to cooperate with the cutting cylinder, the grooved cylinder carrying at least one rubber rod in a groove formed in the grooved cylinder, the cutting cylinder and the grooved cylinder being able to rotate in opposite directions

  so that the cutting blade and the rubber rod

  chouc periodically come into mutual contact in a cutting location, and at least one punching die disposed in the vicinity of the location

  for punching holes in a structure

  laminate structure formed from surface portions of mutually superimposed web moving through an interval between the rolls while leaving a

  tongue-shaped element linked to the surface parts

  tapes and protruding through the holes in an area adjacent to a location of the surface areas of the tape where a copy is cut by

the cutting blade.

  An advantage of the aforementioned structure of the provision

  sitive according to the invention consists in that one obtains a stabilization of the strip in the pair constituted by the cutting cylinder and the grooved cylinder under the effect of the punching which is carried out by the die (s) through the layers of the strip which may or may not be folded The punching die (s)

  are arranged, for this purpose, in the vicinity of the location-

  cutting so that no additional device is necessary to support and actuate them. Furthermore, the necessary place for the

  punching dies is quite small and the dies

  these punching can be produced after the folding machines previously delivered. The precise transport of the strip which can be obtained by the device according to the invention notably improves the quality.

from production.

  In accordance with another feature of the invention, the punching die is arranged on the cutting cylinder upstream of the cutting blade in the direction of movement of the surface portions of the strip through the gap between cylinders of

  way to punch the holes in the surface parts

  of tape before the cutting blade cuts the specimen.

  An advantage of this particular feature of the device

  tif of the invention is that a connection of

  layers of tape is produced by the dot matrices

  sinking before cutting the strip in the pair of cutting cylinders The punching dies penetrate into the layers of the strip and, under the effect of the small tabs or tabs produced on the edges of the resulting punched holes which remain linked to the strip , the individual layers of the strip are hooked together by the engagement of the tabs or tongues in the holes. A uniform front edge is thus formed in the copies which are cut out.

then in the band.

  According to another feature of the invention, the punching die is arranged on the cutting cylinder in an area adjacent to the cutting blade so as to punch the holes in

  the surface parts of the strip and to cut the example

  please approximately simultaneously.

  According to yet another feature of the invention, the punching die is disposed on the cutting cylinder downstream of the cutting blade in the direction of movement of the surface portions of the strip through the gap between the cutting cylinders.

  so as to punch the holes in the surface parts

  band spikes after the cutting blade has performed

the cutting of the copy.

  According to yet another feature of the invention, there is provided a blocking rail mounted on the outer cylindrical surface of the cutting cylinder, the punching die being held in

the locking rail.

  This has an economic advantage because it is possible to subsequently equip already delivered machines with the device according to the invention of the

  fact that it can be installed with less

considerable size.

  According to another feature of the invention, the punching die is mounted on the cutting cylinder so as to enter periodically

  in contact with the rubber rod.

  Consequently, with the rubber rod or bar serving as a cutting support for the cutting blade, it is possible to punch

  of all the layers of the paper strip and the use-

  additional sation of the rod or rubber bar as a counter-support during the punching operation eliminates the need to install a counter-support

of separate punching.

  According to another feature of the invention, several punching dies are arranged on the outer cylindrical surface of the cutting cylinder so as to punch holes with elements in the form of tongues or tabs linked to the surface parts of the strip and protruding

  through the respective holes along the res-

  band pectives in surface parts located

  in the vicinity of the cutting location.

  By suitably spacing individual punching dies from each other, it is possible to make in a strip forming many layers intentionally several holes in one side of the strip which is located opposite the folding side of the product or copy, if folded, or

  well on either side of it, if not folded.

  The punching carried out on the front edges of the example-

  pleasing in its direction of movement prevents the formation of so-called "dog ears" when the specimens enter transport or conveyor systems which are located further away

downstream.

  According to yet another feature of the invention, the blocking rail is mounted on the outer cylindrical surface of the cutting cylinder substantially parallel to an axis of rotation of the latter and several punching dies are

  distributed over its length in mutual positions-

adjacent.

  According to yet another aspect of the invention, a device is created ensuring an ordered movement of a strip in a folder, this device comprising a first movable element carrying at least one cutting blade, a second movable element being able to enter mutual contact with the first movable element and carrying at least one bar formed of an elastic material, the first and second movable elements being movable relative to each other so that the cutting blade and the bar formed of elastic material periodically come into mutual contact in a cutting location along a travel path of a laminated structure formed of surface portions of mutually overlapping tape, and at least one punch die disposed at another location along the path displacement for punching holes in the surface areas of the strip along respective edges thereof while in lai ssant a tongue-shaped element linked to the surface portions of the strip and projecting

through the holes.

  In accordance with yet another aspect of

  the invention, it is proposed, in a method for assu-

  re an ordered movement of a strip in a folder, the improvement comprising the step of forming by punching, in a laminated structure formed of surface portions of strip mutually superimposed, along respective edges of this strip, several shaped elements tongues remaining connected to the surface portions of the strip and projecting through respective holes formed simultaneously by punching the surface portions of the strip, in order to hold the surface portions of the strip assembled

on their respective borders.

  According to yet another aspect of the invention, the method comprises, before the step of

  punching, a step of cutting the surface parts

  stripes superimposed in respective copies along the respective edges so that the front ends of the respective copies are held together by the elements in the form of

  tabs protruding through the punched holes.

  Regarding the cutting of the superimposed strip parts before the punching step, it should be noted that the time interval between the two operations should be sufficient for the

  air resistance does not produce separation

  tion of the surface portions of the strip.

  In accordance with another peculiarity of

  the invention, it is proposed, during the punching step-

  swimming, to cut the superimposed surface parts of the strip in the form of respective copies along the respective edges so that the front ends of the respective copies are held together by the elements in the form of

  tabs protruding through the punched holes.

  In accordance with yet another peculiarity

  of the invention, it is proposed, after the punching step-

  swimming, to cut the surface portions of superimposed strip in the form of respective copies along the respective edges so that the front ends of the respective copies are held together by the elements in the form of

  tabs protruding through the punched holes.

  In accordance with yet another feature of the invention, a step is proposed for cutting the superficial parts of the strip superimposed in the form of respective copies along the respective edges and a following step for transporting the copies thus formed into a other post

treatment.

  According to yet another feature of the invention, a step is proposed consisting in depositing a substance on the respective borders situated on the front edges of the copies thus formed

  in order to adhere the front edges to each other.

  According to yet another particularity addition-

  of the invention, the substance which is deposited

is an adhesive.

  According to yet another feature of the in-

  vention, the substance that is deposited is water.

  Regarding the water deposit, it should be noted that water will keep the front edges of the overlapped sheets long enough

  so that they pass through a folder without deviating

ter from each other.

  In accordance with yet another peculiarity

  of the invention, there is provided a step of mutual linkage-

  the pages of the copy in the borders.

  In accordance with a concomitant mode of bet

  implementation of the invention, a step is provided

  both to remove the borders by dressing the respective copies. Other characteristics and advantages of the invention will be highlighted in the following.

  the description, given by way of nonlimiting example,

  with reference to the accompanying drawings in which: Figure 1 is a partial front elevation view of a cutting cylinder provided with punching blades or dies in accordance with the invention; FIG. 2 is an end view on an enlarged scale of FIG. 1, showing a journal of the cutting cylinder as well as a journal of a grooved cylinder or

  notched cooperating with the first cylinder and not shown

felt in the figure;

  Figure 2 a is a fragmentary view on an enlarged scale.

  die of Figure 2, showing a detail, surrounded by a circle, of the support of one of the punching blades; Figure 3 is a plan view of a band showing a dressing configuration of this band; Figure 4 is a perspective view of an example having many sheets or multiple folds and which does not have to be joined in the folds; and Figure 5 is a sectional view on a greatly enlarged scale of Figure 3, the section being made according to

  line V-V and showing elements in the form of lan-

  lookouts or tabs made by punching, in connection with the strip and projecting through holes

punched in the band.

  Referring now to the drawings, and firstly in particular to Figure 1, this represents in front elevation a cutting cylinder 2 which is equipped with a cutting blade or knife 4 The cutting blade 4 is held by a locking rail 9 on the cutting cylinder 2 The locking rail 9 is fixed by locking screws 17 on the cutting cylinder 2 Below the cutting blade

  4, which extends substantially horizontally and transverse-

  dirty to the cutting cylinder 2, several blades or punching or stamping dies 7 are arranged with variable spacings with respect to each other The particular number of punching dies 7 held by the locking rail 9 may vary over the length of the cutting cylinder 2 So, for example, near the edges of the

  strip of paper, one can lay out a greater

  centering of punching dies 7 in order to prevent the front edge 14 of a product or example from opening

(see Figure 4).

  There are pins 11 at the ends of the cutting cylinder 2 (only one of which is

  shown in Figure 1) by means of which the cyl-

  cutting blade 2 is rotatably mounted in the frame walls, not shown, of a folding apparatus

or folder.

  In the side or end elevation view of the pair of cylinders of Figure 2, the cutting cylinder 2 is shown in cooperation with a grooved or notched cylinder 3 A strip of paper 1, formed of several layers or surface parts passes through the interval between cutting cylinder 2 and the cylinder

  grooved 3 One or more cutting blades 4 are now

  bare in the blocking rail or rails 9, only one of which

  ment is visible in Figure 2, while the grooved cylinder 3 has one or more rods or rubber bars 5 arranged in one or more grooves

  formed in the outer cylindrical surface of the cylin-

  dre 3, equal in number to the number of cutting blades 4 In addition, one or more punching dies 7 are fixed upstream of the cutting blade (s) 4, in the direction of movement of the strip 1 which is highlighted by the associated curved arrow, in the blocking rail 9 which is housed in a recess formed in the cutting cylinder 2 Before a strip section 8 is cut from the paper strip 1 by the cutting blade 4 and the bar of rubber in a cutting station 6, the punching dies 7 which are distributed over the length of the cutting cylinder 2 penetrate into the strip of paper 1 along a border thereof directly upstream of the cutting station cutting 6 o must be produced a new edge

front of the paper strip 1.

  When the punching dies 7 enter the paper strip 1, they come into contact with the bar or rubber rod 5 of the grooved cylinder 3, which is suitably synchronized to arrive at a location directly opposite the punching dies 7 The punching dies 7 can sink completely through the paper strip

  1 without their cutting edge or surface being damaged

  gée the fact that the rod or rubber bar 5

  kills an effective damping support Under the effect of the holes or slots 16 produced by the penetration of the paper strip 1 and the formation of a tab-shaped element or tab 16 ′ remaining linked to the paper strip 1 and s ’ extending through the holes or slits 16, the paper layers or surface portions of the paper web 1 are fixed or held together because the individual layers of paper are

  hung together by the tongue-shaped elements-

  on the edges of the holes or slits 16 The holes or slits 16 formed by punching maintain the respective newly created front edges in the paper strip 1 after the strip or copy section 8 has been cut from the strip, so that the pages of copy 8 cannot move away from each other or begin to float under the effect of air resistance when the copy

  8 is then transported or treated.

  The punching tool or die 7 is fixed upstream of the cutting blade 4 in the direction of movement of the paper strip 1, as shown in Figure 2 It is however also possible to arrange the punching tool or die 7 downstream or after the cutting blade 4 in the blocking rail so that the rear edge of the tape or exemplary section 8 can similarly make

  the subject of a binding of leaves under the effect of the

stamping or stamping.

  In Figure 2a, there is shown in an enlarged view the mounting bracket for the punching die 7 in the cutting cylinder 2 The configuration of the punching die 7 is highlighted in Figure 2a it should be noted that the punching die 7 can be

formed of needles.

  Figure 3 shows an arrangement of dres-

  wise for a product or copy 12 which must be produced Copy 12 has been provided with holes or slots 16 formed by punching in a dressing area or border 13 It can also be seen that the holes or slots 16 are located upstream of the edge before 14 of the product or copy 12, in its direction of movement represented by the arrows Tabs or tabs formed in the paper strip 1 during punching

  and extending into the holes or slots of the adjacent pages

  centes of copy 12 prevent the front edge 14 of copy 12 from floating or opening during

  the subsequent transport of copy 12 in the pile -

  se Water or a suitable adhesive can also be applied to the border 13 so as to hold the pages of the copy together The holes or slots

  16 are formed by punching in non-printing areas

  copy times During further processing

  of copy 12, the borders of the unprinted parts

  mées from the specimen 12 where the holes or slots 16 were made by punching are erected or else

  are kept as bonding or bonding areas

  sound so that you can paste or link together

  copy pages 12 to multiple pages.

  In Figure 4, there is shown a multi-page copy 12 which is finished The leading edge

  14 above is located at the lower end of the example

  please 12 shown in Figure 4 On its left side, there is provided a folding edge 8 while a

  free edge 19 is located on the opposite side By punch-

  swimming holes or slits in the border adjacent to the front edge 14, in particular in the vicinity of the free edge 19, prevents the copy 12 from opening or prevents the formation of what are called "dog ears" It is therefore possible to increase the operating speed in the folder and also to obtain

  more uniform and better quality products.

  In the enlarged sectional view of Figure 5, a copy is shown as being provided with holes or slots 16 in which engage

  elements in the form of tongues or tabs 16 '.

Claims (16)

  1 Method for ensuring an ordered displacement of a strip (1) in a folder, characterized in   that it includes the step of forming by punch-   Swimming, in a laminated structure formed by surface surface portions of strip (1) mutually superimposed, along respective edges (13) of this strip, several elements in the form of tongues (16 ') remaining linked to the surface surface portions of strip and forming   protrusion through respective holes (16) formed simul-   temporarily by punching the surface portions of the strip, in order to hold the surface portions   (8) of tape assembled on their respective edges.   2 Method according to claim 1, characterized in that it comprises, before the punching step, a step consisting in cutting surface portions of superimposed strip in respective copies (8,12) along the respective edges (13) of such that the front ends of the respective copies (8,12) are held together by the tongue-shaped members (16 ') projecting through the punched holes (16).   3 Method according to claim 1, characterized in that it consists, during the punching step,   to cut the surface parts of superposed strip   placed in the form of respective copies (12) along the respective edges (13) so that the front ends of the respective copies (12) are   held together by lan-shaped elements   lookouts (161) projecting through the punched holes çonné (16).   4 Method according to claim 1, characterized in that it comprises, after the punching step, a step consisting in cutting the surface parts   of tape superimposed in the form of respective copies   tifs (8,12) along the respective edges (13) of such   so that the front ends of the copies respec-   tifs (8,12) are held together by the tongue-shaped elements (16 ') projecting through the punched holes (16). Method according to claim 1, characterized in that it comprises a step consisting in cutting the surface portions of strip superimposed under   the form of respective copies (12) along the edges -   respective res (13) and a next step of transporting the copies (12) thus formed into another treatment station.   6 Method according to claim 5, characterized in that it comprises a step consisting in depositing a substance on the respective edges (13) located on the front edges (14) of the copies (12) thus formed in order to adhere the edges mutually before (14).   7 Method according to claim 6, characterized   in that the substance that is deposited is an adhesive.   8 Method according to claim 6, characterized   in that the substance that is deposited is water.   9 Method according to claim 5, characterized in that it comprises a step consisting in binding together   the pages of the copy (12) in the borders (13).   Method according to claim 5, characterized in that it comprises a step consisting in removing the borders (13) by dressing the respective copies (12).   11 Device for ensuring an ordered movement of a strip (1) in a folder, characterized in that it comprises at least one cutting cylinder (2), at least one cutting blade (4) mounted on the cutting cylinder (2 ), a grooved cylinder (3) arranged so as to cooperate with the cutting cylinder (2), the grooved cylinder (3) carrying at least one rubber rod (5) in a groove formed in the grooved cylinder (3), the cutting cylinder (2) and the grooved cylinder (3) being able to rotate in opposite directions so that the cutting blade (4) and the rubber rod (5) periodically come into mutual contact in a cutting location, and at least one punching die (7) arranged in the vicinity of the cutting location for punching holes (16) in a formed laminate structure   mutually superficial strip surface areas (1)   posed moving across an interval between the   cylinders while leaving a tongue-shaped element-   te (16 ') linked to the surface parts of the strip (1) and projecting through the holes (16) in an area adjacent to a location of the surface parts of the strip where a copy (8,12) is cut by the blade cutting (4).   12 Device according to claim 11, character-   se in that said punching die (7) is available   placed on the cutting cylinder (2) upstream of the cutting blade (4) in the direction of movement of the surface areas of the strip (1) through the gap between cylinders so as to punch the holes (16) in the tape surface parts (1) before the blade   cutting (4) does not cut the copy (12).   13 Device according to claim 11, character-   se in that said punching die (7) is disco-   placed on the cutting cylinder (2) in an area adjacent to the cutting blade (4) so as to punch the holes (16) in the surface areas of the strip (1) and to   cut the copy (12) approximately simultaneously- is lying.   14 Device according to claim 11, character-   risé in that said punching die,,) is disposed on the cutting cylinder (2) downstream of the cutting blade (4) in the direction of movement   surface portions of strip (1) across the inter-   valle between cylinders so as to punch the holes (16) in the surface areas of the strip (1) after the cutting blade (4) has cut the the copy (12).   Device according to claim 11, character-   rised in that it comprises a locking rail (9) mounted on the outer cylindrical surface of said cutting cylinder (2), said punching die (7) being   held in said locking rail (9).   16 Device according to claim 11, character-   risé in that said punching die (7) is mounted on said cutting cylinder (2) so as to periodically come into contact with said rubber rod (5).   17 Device according to claim 11, character-   rised in that several punching dies (7) are arranged on the outer cylinder surface of the cutting cylinder (2) so as to punch holes with elements (16 ') in the form of tongues or tabs linked to the surface parts of the strip (1) and protruding through the respective holes along respective edges (13) of the strip in surface parts located in the vicinity of the location cutting.   18 Device according to claim 15, character-   risé in that the blocking rail (9) is mounted on said outer cylindrical surface of said cutting cylinder (2) substantially parallel to its axis of rotation and several punching dies (7) are   distributed over its length in mutual positions- adjacent.   19 Device for ensuring an ordered movement of a strip in a folder, characterized in that it comprises a first movable element (2) carrying at least one cutting blade (4), a second movable element (3) capable of entering into mutual contact with the first movable member and carrying at least one bar (5) formed of an elastic material, said first and second movable members (2, 3) being movable relative to each other so that said cutting blade (4) and the bar (5) formed of an elastic material periodically come into mutual contact in a cutting location along a travel path of a laminate structure formed of surface parts of tape (1) mutually overlapping, and at least one   punching die (7) arranged in another location   along the travel path to punch holes (16) in the surface areas of the strip (1) along respective edges thereof while leaving a tongue-shaped member (16 ') linked to the surface areas of strip (1) and projecting from through the holes (16).