JPH05132223A - Method and device for ensuring proper web travel in folding machine - Google Patents

Abstract

PURPOSE: To assure orderly web travel in a folder by stamping out a plurality of tongue-like elements remaining appendant to the web surface portions, projecting through respective holes simultaneously stamped out of the web surface and inserting the tongue-like elements into the holes. CONSTITUTION: A device comprises a paper cutting shell 2 provided with a paper cutting knife and a cylinder 4 with grooves which is cooperatively engaged with the paper cutting shell 2. Rubber beams 5 are placed in the grooves and are rotatable in the opposite direction to each other. Also, a stamping die 7 is placed near the cutting position for stamping out holes in a laminate running through a nip between the cylinders. The laminate formed of web surfaces 1 layered on one another is stamped by the die 7 along each strip, and a number of tongue-like elements are left on the web surface portions 1 and are inserted into the holes stamped out of the web surface 1 to integrally hold the web surface portions 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for ensuring correct web running in a folder of a printing press.

[0002]

2. Description of the Prior Art Devices which have hitherto been known are installed in a cylinder in a folding machine and act on a paper web conveyed in each folding machine. For example, one or more cutting knives are incorporated on the outer cylindrical surface of the pair of cutting cylinders of a cylinder including a grooved cylinder, one or more depending on the number of one-sided cutting knives. A rubber beam or bar is located on the outer cylindrical surface of the grooved cylinder.

German Utility Model Registration No. 8
No. 712804.7 discloses, for example, a device for marking perforation lines, in which case the perforation knife can be fluidly clamped at a given position. The perforating knife acts on the web in the folder over the entire width of the web and, based on the diameter of the cylinder, perforates the web which extends at right angles to the running direction of the web.

[0004]

Starting from this prior art, it is an object of the present invention to provide a method and a device for ensuring correct web travel in a folder in a wider range than before.

[0005]

According to the present invention, the above-mentioned problems and other problems can be solved by providing the following device in order to ensure the correct web running in the folding machine. It was That is, the device comprises at least one paper cutting cylinder, at least one paper cutting knife arranged on the paper cutting cylinder, and a grooved cylinder arranged in cooperating engagement with the paper cutting cylinder. The grooved cylinder is equipped with at least one rubber beam in a groove formed in the grooved cylinder, and the paper cutting cylinder and the grooved cylinder are rotatable in opposite directions, whereby The paper cutting cylinder and the rubber beam are adapted to periodically engage with each other at the cut-off position, and in the vicinity of the cut-off position,
At least one stamping die for punching holes is provided in a layered structure formed from mutually laminated web surface portions that run through the nip between both cylinders, and this stamping die is In terms of surface, the signature is configured to protrude through a hole adjacent to the position of the web surface portion where the signature is cut off by a paper cutting knife, leaving the tongue-shaped member attached to the web surface portion.

[0006]

The advantages of the aforementioned structure of the device of the invention are:
The stabilization of the web is achieved by a pair of cutting cylinders / grooved cylinders stamped through a web layer that is folded or unfolded by one or more stamping dies. .. The stamping die or dies are arranged near the parting position for this purpose, so that no additional device for supporting and manipulating them is necessary. Furthermore, the space requirement for the stamping dies is ensured to be minimal, and the stamping dies can also be retrofitted into a pre-procured folder. The accurate transport of the web, which can be achieved with the device according to the invention, can significantly improve the quality of the product.

According to another feature of the invention, the stamping die is located on the cutting cylinder in the direction of travel of the web surface portion through the nip, upstream of the cutting knife, whereby Before the paper cutting knife cuts through the signature, holes can be punched in the web surface.

An advantage of the apparatus of the present invention having the above characteristics is that the web layer can be tacked by a stamping die before the web is cut through in the pair of cutting cylinders. The stamping die penetrates the web layer, and the tabs or tongues at the ends of the stamped holes that have been added to the web leave the individual layers of the web inwardly of the holes due to the tabs on the tab. It is bent in a hook shape. Thereafter, the smooth guiding edge of the signature is cut from the web, thereby forming the signature.

According to another feature added to the present invention, a stamping die is located on the cutting cylinder adjacent the cutting knife, thereby punching holes from the web face portion and folding at substantially the same time. You can cut the Ding.

According to another feature added to the invention, the stamping die is located on the cutting cylinder, penetrating the nip in the direction of travel of the web surface portion downstream of the cutting knife, This allows the paper cutting knife to punch holes from the web surface after cutting the signature.

According to a further feature of the present invention, a clamp rail is provided on the outer cylindrical surface of the cutting cylinder, and the stamping die is held in the clamp rail.

This offers the economic advantage that a machine according to the invention can be retrofitted to a previously procured machine. This is because the device can be installed in a very space-saving manner.

According to another feature added to the present invention, a stamping die is incorporated into the cutting cylinder and periodically and cooperatively engages the rubber beam.

Thus, by using a rubber beam or rubber bar as an underlay for a paper cutting knife, punching of all layers of the paper web can be achieved, and the rubber beam or rubber bar as an underlay for the stamping operation. The additional use makes it unnecessary to install individual stamping underlays.

According to another feature added to the invention, a plurality of stamping dies are arranged on the outer cylindrical surface of the cutting cylinder, with tongues or tabs added to the web surface part. The holes are punched out and project from the respective holes along the respective strips of the web near the face portion at the cut-off position.

By appropriately separating the individual stamping dies from each other, several holes can be intentionally punched in the multilayer web, or if folded, the product or signature. Can be punched on its side located opposite the folding side, or on each side if it is not folded. By punching at the guide edge of the signature in its transport direction, no "folding" occurs when the signature enters the transport or conveyor device located downstream of it.

According to a further feature of the present invention, the clamp rail is mounted on the outer cylindrical surface of the paper cutting cylinder parallel to its axis of rotation, and a plurality of stamping dies are located adjacent to each other. It is distributed over the entire length.

According to another characteristic of the invention, a device is provided for ensuring the correct running of the web in the folder, which device is equipped with at least one paper cutting knife. A first movable member and at least one formed from a flexible material that is cooperatively engageable with the first movable member.
It consists of a second movable member equipped with two beams,
The first and second movable members are movable relative to each other, whereby a cutting knife and a beam made of a pliable material are formed from web surface parts which are laminated together. At the cut-off positions along the transport path of the at least one of the stamping dies, and at least one stamping die is provided as a transport path for punching holes along the respective strips in the web face portion. It is located at another position along the side, and on one side projects away from the tongue-like member attached to the web face portion, through the hole.

According to yet another feature of the present invention, the following improvements have been made in the method of ensuring proper web travel in a folder. That is, in the step of stamping a layered structure formed of web surface portions that are stacked on top of each other, a plurality of tongue members are added to and remain on the web surface portion along their respective strips, and Projecting through respective holes simultaneously punched from the web, so that the web face portions can be held together by their respective strips.

In a method with additional features of the present invention, there is a step of cutting the laminated web face portions into respective signatures along respective strips prior to the stamping step, which comprises: The guide edges of each signature are now held together by the tongue.
And it is designed to stick out through a punched hole.

With respect to cutting the laminated web portions before the punching step, care must be taken so that the time interval between them is sufficient and that air resistance does not separate the web face portions. I have to.

According to yet another feature of the invention, during the stamping step, the step of cutting the laminated web face portions into respective signatures along respective strips is included, whereby the respective signatures are cut. The guide edges of the signatures are held together by the tongue and project through the punched holes.

According to a further feature of the invention, after the stamping step, there is the step of cutting the laminated web surface portions into respective signatures along the respective steps, whereby the guidance of the respective signatures. The edges are held together by a tongue and project through the punched holes.

According to yet another feature of the invention, there is the step of cutting the laminated web face portions into respective signatures along the respective strips, and subsequently formed in this way. Steps are provided for transporting the folded signature to the next process position.

According to a further added feature of the invention, there is the step of applying a substance to each strip at the guide edge of the signature thus formed, whereby the guide edge is It can be glued to each other.

According to a further feature of the present invention, the substance applied is an adhesive.

According to yet another feature of the invention, the substance applied is water.

A note regarding the application of water is that the water can hold the guiding edge of the laminated sheet long enough and that the sheet can pass through the folder without fluttering. It has to be.

According to a further added feature of the present invention, there is the step of binding the pages of the signature together in a strip.

In an additional feature of the invention, there is the step of trimming the strip from each signature.

Other features which are considered as characteristic for the invention are set forth in the appended claims.

Although the present invention has been disclosed and described herein as providing a method and apparatus for ensuring proper web travel in a folder, this is in the details shown. It is not limited to this. This is because various modifications and structural changes can be made without departing from the spirit of the present invention and within the scope and scope of the claims.

[0033]

The structure and method of operation of the present invention, as well as additional objects and advantages, will be best understood by reading the following description of a particular embodiment together with the accompanying drawings. ..

According to the drawings, and in particular initially FIG. 1, a cutting cylinder 2 with a cutting knife or cutting blade 4 is provided in a front longitudinal section. The paper cutting knife 4 is held on the paper cutting cylinder 2 by a clamp rail 9.
The clamp rail 9 is fixed to the paper cutting cylinder 2 by a clamp screw 17. A plurality of punching knives or stamping knives or dies 7 are arranged at lateral distances from each other below a paper cutting knife 4 which extends in a substantially horizontal direction across the paper cutting cylinder 2. The number of stamping dies 7 held by the clamp rails 9 varies depending on the length of the cutting cylinder 2. That is, for example, a stamping die 7 is provided near the edge of the paper web.
Are arranged more closely and prevent the guide running edge 14 of the product or signature from being opened (see FIG. 5).

A journal 11 (only one of which is shown in FIG. 1) is provided at the end of the paper cutting cylinder 2,
As a result, the cutting cylinder 2 is supported on a housing wall (not shown) in the folding device or the folding machine.

In the side or end sectional view of the pair of cutting cylinders of FIG. 2, the cutting cylinder 2 is shown in cooperation with a grooved or notched cylinder 3. A paper web 1 forming several layers or surface portions runs through a nip between a cutting cylinder 2 and a grooved cylinder 3. One or more cutting knives 4 are held in the clamp rails 9, one of which is illustrated in FIG. The one-way grooved cylinder 3 has one or more rubber beams or rubber bars 5, which are equal to the number of paper cutting knives 4 formed on the outer cylindrical surface of the cylinder 3. Located in one or more grooves. Furthermore, one or more stamping knives or dies 7 are formed on the cutting cylinder 2 upstream of the one or more cutting knives 4 in the direction of web travel represented by the associated curved arrows. It is fixed in a clamp rail 9 which is received in the hollow. Before the web section 8 is cut from the paper web 1 by the cutting blades 4 and the rubber bars 5 at the cutting station, the stamping knives or dies 7 distributed over the length of the cutting cylinder 2 are fed to the cutting station 6. Immediately upstream of it, it has penetrated the paper web 1 along its strip and at the cutting station 6 the guide edge of the paper web 1 is about to be newly formed.

When the stamping die 7 penetrates the paper web 1, the stamping die 7 is appropriately timed so as to arrive at the position opposite to the stamping die 7. Engage with. Stamping knife or die 7
It is pierced completely through the paper web 1 without damaging its cutting edges or surfaces, since the rubber beam or rod acts as an effective lining or cushion for it. The holes or slits provided by penetration into the paper web 1 and the formation of the tongues or tabs 16 'that are still attached to the paper web 1 still extending through the holes or slits 16 The paper layers or face parts of the web 1 are fixed or fixed together. This is because the individual paper layers are folded together by the tongue at the edges of the holes or slits 16. The punched holes or slits 16 hold the guide edges of the newly formed paper web 1 respectively after the paper section or signature 8 has been cut from it, so that the pages of the signature 8 are spread apart. Or, the signature 8 is prevented from being fluttered by air resistance when the signature 8 is further conveyed and processed.

The stamping knife or die 7 is shown in FIG.
As shown in the drawing, it is attached upstream of the paper cutting knife 4 in the transport direction of the paper web 1. However, it is also possible to arrange the punching knives or dies 7 downstream or after the cutting knives 4 in the clamp rails, in which case the end edges of the web sections or signatures 8 are likewise stamped or punched. It is made to adhere collectively by.

FIG. 3 shows an enlarged assembly support for the stamping knife or die 7 in the cutting cylinder 2. The contour of the stamping knife or die 7 is clearly visible in FIG. Further, it will be understood that the stamping die 7 may be formed in a needle shape.

FIG. 4 shows the trimming pattern for the product or signature 12 to be produced. Signature 12
Are formed by stamping holes or slits 16 in the trimming area or strip 13. Furthermore, the hole or slit 16 is clearly located behind or downstream of the guide edge 14 of the product or signature 12 in its conveying direction, which is indicated by the arrow. The tongue appendages of the paper web 1 formed by stamping and extending into the holes or slits of the adjacent pages of the signature 12 are
Guide edges 14 of the same prevent fluttering or opening during further transport of the signature 12 in the folder. It is also possible to apply water or a suitable adhesive to the strip 13 to keep the pages of the signature together. The stamping holes or slits 16 are formed in the non-printed area of the signature 12. In the course of the next process of the signature 12, the strips of the non-printed part of the signature 12 in which the holes or slits 16 have been punched out,
It is retained as a glue or binding area for gluing or binding the pages of a trimmed or multi-page signature 12 together.

FIG. 5 shows the completed multi-page signature 12. Said guiding edge 14 is located at the lower end of the signature 12 shown in FIG. On its left side there is a folding edge 18 and also on the open side edge 1
9 is located on the opposite side. Stamping the holes or slits 16 with strips adjacent the guide edges 14 can prevent the signature 12 from opening or "folding", especially near the open lateral edges 19. Higher speeds are thus achieved in the folder, while at the same time a more uniform product flow with improved product quality is achieved.

The enlarged cross-sectional view 6 of FIG. 6 illustrates that the signature is formed by a hole or slit 16 with a tongue or tab 16 'extending therethrough. ..

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a front portion of a paper cutting cylinder provided with a stamping knife or a die according to the present invention.

2 is an enlarged end view of FIG. 1 cooperating with one another with a journal of a paper cutting cylinder and a journal of a grooved or notched cylinder.

3 is an enlarged partial view of FIG. 2, in which the details of the support of one of the punch knives are shown enclosed in a circle.

FIG. 4 is a plan view of a web showing trimming patterns therefor.

FIG. 5 is a perspective view of a multi-sided folded or multi-folded signature that is not joined at a folding portion.

6 is an enlarged cross-sectional view taken along line VV of FIG.
A tongue or tab that is stamped and added to the web is shown and it projects from the web through a stamped hole.

[Explanation of symbols]

 1 Paper Web 2 Paper Cutting Cylinder 3 Grooved Cylinder 4 Paper Cutting Knife or Blade 5 Rubber Beam or Rubber Bar 6 Cutting Station 7 Stamp Knife or Punch Knife 8 Web Section 9 Clamp Rail 10 Dimple 11 Journal 12 Signature 13 Trimming Area or Trimming Strip 14 Guide running edge 16 Hole or slit 16 'Tongue or tab 18 Folding edge 19 Side edge

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Michael Alexander Novik United States New Hampshire New Duran Mary Meeting Road 11 (72) Inventor Roger Behranger United States New Hampshire Dove Batsk Road 336

Claims (19)

[Claims] 1. A method for ensuring correct web travel in a folder, comprising a plurality of tongues extending along their respective strips from a layered web structure formed from web face portions that are laminated together. Stamping the part so that it does not separate from the web surface part and punching out a hole in the web surface part at the same time, and the tongue part is projected into this hole, thereby holding the web surface parts together at the strips respectively. A method for ensuring correct web travel in a folder, which is characterized by: 2. Prior to the punching step, the laminated web face portions are cut into respective signatures along the respective strips, whereby the guide ends of the respective signatures pass through the punched holes. A tongue-shaped member protruding from the tongue-shaped member allows collective holding.
The method described. 3. During the punching step, the laminated web surface portions are cut along the respective strips into respective signatures, whereby the guide ends of the respective signatures are projected through the punch holes. A method according to claim 1, characterized in that it is held together by means of a tongue shaped member. 4. After the punching step, the laminated web surface portions are cut along the respective strips into respective signatures, whereby the guide ends of the respective signatures are projected through the punched holes. A tongue-shaped member which is formed so that the tongue-shaped members can be held together.
The method described. 5. A step of cutting the laminated web surface portions into respective signatures along respective strips, and subsequently for transporting the signatures thus formed to further processing positions. The method of claim 1, comprising the steps of: 6. The step of applying a substance to the respective strips at the guide edges of the signature thus formed, whereby the guide edges are adhered to one another. 5. The method described in 5. 7. Method according to claim 6, characterized in that the substance applied is an adhesive. 8. Method according to claim 6, characterized in that the substance applied is water. 9. A method according to claim 5, characterized in that the pages of the signatures are bound together in strips. 10. The method of claim 5, including the step of trimming the strips from their respective signatures. 11. A device for ensuring correct web travel in a folder, comprising at least one paper cutting cylinder and at least one paper cutting knife arranged on said paper cutting cylinder. A grooved cylinder arranged in cooperative engagement with the paper cutting cylinder, the grooved cylinder having at least one rubber beam mounted in the groove formed in the grooved cylinder. And the paper cutting cylinder and the grooved cylinder are rotatable in opposite directions so that the paper cutting cylinder and the rubber beam periodically engage one another in the cut-off position. ,
Further, in the vicinity of the cut-off position, a hole is formed adjacent to the cutting point of the signature by the paper cutting knife in the layered web formed by the web surface portions laminated on each other which pass through the nip portion between the cylinders. At least one stamping die for punching and forming a tongue portion which is not separated from the web surface portion and for thrusting the tongue portion into the hole is provided. A device to ensure correct web travel on the road. 12. The stamping die is located above the paper cutting cylinder on the upstream side of the paper cutting knife in the traveling direction of the web surface portion and penetrates the nip portion, whereby the paper cutting knife is provided. Device according to claim 11, characterized in that the holes can be punched in the web surface part before the signature is cut through. 13. The stamping die is located on the cutting cylinder adjacent to the cutting knife,
12. Device according to claim 11, characterized in that it is possible to punch holes in the web surface and to cut signatures substantially at the same time. 14. The stamping die is located above the paper cutting cylinder, downstream of the paper cutting knife in the direction of travel of the web surface portion, and passes through the nip portion, whereby the paper is cut. 12. The device according to claim 11, characterized in that the cutting knife is capable of punching a hole in the web surface part after having cut through the signature. 15. Apparatus according to claim 11, characterized in that clamp rails are incorporated in the outer cylindrical surface of the cutting cylinder and the stamping dies are held on the fixed rails. 16. The stamping die is incorporated into the paper cutting cylinder and is in periodic and cooperative engagement with the rubber beam.
1. The device according to 1. 17. A plurality of the stamping dies are arranged on an outer cylindrical surface of the paper cutting cylinder, and an additional tongue member can be used to punch holes in the web surface portion. Device according to claim 11, characterized in that it penetrates through and projects along the respective strips of the web surface part in the vicinity of the cut-off position. 18. The clamp rail is mounted on the outer cylindrical surface of the cutting cylinder substantially parallel to its axis of rotation, and a plurality of the stamping dies are adjacent to each other over their length. 16. Device according to claim 15, characterized in that it is distributed in different positions. 19. A device for ensuring the correct running of a web in a folder, the first movable member fitted with at least one paper cutting knife, and cooperating with said first movable member. A second movable member mounted with at least one beam formed of a bendable material, the first and second movable members being movable relative to each other. , Whereby the paper cutting knife and the beam formed of a bending material are cyclically engaged with each other at a cut-off position along a conveying path of a layered structure formed of mutually laminated web surface portions. And at least one stamping die is located at another location along the transport path, thereby punching the web face portion along its respective strip. Device for ensuring correct running of the web in the folder, characterized in that it can be pulled out and, on the one hand, protrudes through the hole, away from the tongue-like member attached to the web surface part ..