EP1779984A1 - Méthode pour rogner des signatures - Google Patents

Méthode pour rogner des signatures Download PDF

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Publication number
EP1779984A1
EP1779984A1 EP05405608A EP05405608A EP1779984A1 EP 1779984 A1 EP1779984 A1 EP 1779984A1 EP 05405608 A EP05405608 A EP 05405608A EP 05405608 A EP05405608 A EP 05405608A EP 1779984 A1 EP1779984 A1 EP 1779984A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting table
printed product
ram
knives
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05405608A
Other languages
German (de)
English (en)
Inventor
Adrian Fassbind
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mueller Martini Holding AG
Original Assignee
Mueller Martini Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mueller Martini Holding AG filed Critical Mueller Martini Holding AG
Priority to EP05405608A priority Critical patent/EP1779984A1/fr
Publication of EP1779984A1 publication Critical patent/EP1779984A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B26D1/09—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0081—Cutting on three sides, e.g. trilateral trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting

Definitions

  • the invention relates to a device for trimming side edges of a multilayer print product, consisting of a cutting table for lying support of the printed product and a ram for holding the printed product on the cutting table, as well as several each one to be trimmed side edge of the printed product associated, against a in the cutting table arranged cutting bar acting knife having cutter, said cutting table and pressure plate each form a cropped printed product corresponding, separate unit and are mounted interchangeable.
  • preprinted products such as printed sheets
  • inserts envelopes by collecting and then binding to one side edge by gluing, stapling or sewing to raw bound printed products resp. Book blocks processed.
  • the remaining three side edges of these printed products are trimmed.
  • the press punches and cutting tables are designed so that as complete as possible surface pressure of the printed products is given during the cutting process. Both cutting table and punch must be adapted to the cut format accordingly. In a format change must therefore be installed according to the format of the press die and cutting table.
  • the cutting tables are to be selected according to the cut back length. The user therefore has a set for different back lengths, whereby the gradation depends on the width of the cutting strips. It makes sense that the cutting tables are each marked with a unique name, usually with a number or a letter, for identification purposes.
  • the number or letter of the cutting table to be used is clearly defined and can be read from a table or displayed by the control device of the three-knife trimmer after the format has been input. Failure to use the correct cutting table or incorrectly seat the cutting table can result in rejects or even collisions between machine parts and cutting blades. A more complicated situation arises in the case of the ram, which must be adapted both to the back length to be cut, and to the book width. In addition aggravating affects the multi-part, layered structure of the ram.
  • the layer of the pressing dies resting directly on the material to be cut is usually made from one or more layers of cardboard and glued to a subsequent sheet of plywood or a material having similar properties.
  • the plywood in turn, is fastened by means of screws to a foot-like support, which is fitted with a guide rod is connected and can be constructed in two parts, attached. If a punch is installed which protrudes at least partially beyond the cutting planes formed by the blades, a collision with the blades is predetermined. Most of the items required for a complete ram are made by the users to the mass of printed products to be produced. There is thus the danger that the machine is provided with a wrong or incorrectly used cutting table and / or with a false stamping made of compression punches and turned on and thus damage to the processed printed products or the machine itself can arise. In prior art devices, the task of the operator is to ensure that the correct parts are properly seated in their seats.
  • Modern machines have servomotors, by means of which all axes are automatically adjustable. After entering the product parameters of the raw products and the finished cut products, the control device is able to calculate the target positions of the axes, if necessary to correct and start by means of the servomotors. A collision between machine parts and machine parts or products, by misalignments, can thus be avoided.
  • the only risk are the format-dependent removable parts, such as cutting table and press die, although by the Control device exactly definable, but not controlled.
  • the object is achieved according to the invention in that the unit for checking the affiliation of the installed cutting table, pressing plate and knives is assigned a measuring device arranged in the cutting area.
  • FIG. 1 the cutting unit 3 of a three-knife trimmer is shown schematically.
  • a print product 1 to be trimmed on three sides, for example a book block, is aligned with its side edges, on the cutting table 2.
  • the printed product 1 is pressed against the cutting table 2 with the aid of a press ram 5, after it has been pressed with Aligning means 6 ( Figure 8) has been positioned on the cutting table 2.
  • Cutting table 2 and press punches 5 thereby form a unit 39 assigned to a specific printed product.
  • the head cut and the foot cut are performed simultaneously here first with the front knife 7 of the front cut and then with the two side cutters 8.
  • All three blades move during the cutting process in each case in a cutting plane E1, E2, E3.
  • the levels can be left, as is done for example in a known embodiment with the front blade 7, which is unfolded after the cut.
  • the position of the cutting plane E1 of the front blade 7 is usually not format-dependent and therefore stationary to the cutting unit 3 resp. a machine frame 35 defined. It follows that the position of the front-cutting cutting bar 9 (Fig. 3) in the conveying direction F of the printed products 1 is fixed.
  • the distance d of the cutting plane E2 of the knife for the head ormodalberough and the cutting plane E3 of the knife for the foot or Kopfbepeaks corresponds to the back length of the printed products to be cut 1.
  • the location of the cutting planes E2, E3 of the knife 8 for the head or Foot trimming and the position of the associated cutting strips 10 are adjustable according to the back length.
  • the sequence of a changeover from a first printed product with a first format to a subsequent printed product with a format deviating from the first will be described below: After all printed products 1 of a production have been brought out of the machine and the parameters of the printed products 1 of the next production have been entered into the control device 25, the actual switching process can begin. All organs of the cutting unit 3 are at least as far moved to an external position that they allow the removal of the inserted and the insertion of a new unit 39. On a display device 38 which is connected to the control device 25, it is indicated which cutting table 2 is to be used.
  • the cutting table 2 is designated, for example, with characters such as E as an identification feature 11.
  • E an identification feature 11
  • a new cutting table 2 is inserted into the machine by the operator, locked in his seat and identified by the control device 25.
  • the cutting table 2 clean, rests on the support surfaces 27.
  • the cutting tables 2 may include machine-readable identification marks 4, such as a bar code, a matrix of pits or elevations, or a built-in radio frequency identification (RFID) chip to which the controller 25 communicates via the connection 26 can.
  • RFID radio frequency identification
  • a surface can be scanned optically, capacitively or inductively.
  • the design of the identification marks 4 is realized so that a not inserted in the correct position cutting table 2 can not be identified. In this way it is possible to determine with the same sensor technology whether or not the correct cutting table 2 has been used in the correct position.
  • the identification mark 4 is formed by an arrangement of recesses 28, which are scanned by an identification means 12 formed by inductive sensors. With n sensors 2 n different combinations can be distinguished. In the example with 5 sensors so 32 combinations. The combination with 5 wells is not used, but as missing resp. not correctly inserted cutting table interpreted. Thus 31 different cutting tables can be identified.
  • Another possibility is, for example, to measure the width of the cutting table 2 by measuring the distance from a fixed point of the machine frame 35 to a surface of the cutting table 2 in the triangulation method.
  • a further advantageous solution results if a measuring system is used for the length measurement is already provided in the machine for a different purpose, such as the measuring systems of the adjustment of a left Zentrierarms 29 or a right Zentrierarms 30th If the correct cutting table 2 is used properly, the press ram 5 can be used next.
  • the ram 5 are both in their width and length to produce the masses of the printed products to be cut. They are constructed according to FIGS. 2 and 3 and fastened to a guide rod 24.
  • the lowermost layer 14 is made of cardboard, is glued to a wooden plate formed as an intermediate layer 16 and should be slightly opposite to the cutting planes E1, E2, E3.
  • the intermediate layer 16 in turn is connected to the stamping foot 17, which consists of a support 18 with bolted steel plate 19, by means of screws.
  • Each format can be assigned by the control device 25, in the same manner as in the cutting tables 2, the correct dimension for each part 14, 16, 18, 19 of a ram 5.
  • an identification with identification features 13, analogous to the cutting tables 2 is possible.
  • the support 18 with the letter "C" is shown as an identification feature 13. All other parts of the ram 5, prepared by the operator resp. are not directly identifiable.
  • a light barrier 20 formed by a transmitter 21 and receiver 22 above the cutting table 2 is that can detect the standing on the ram 5 sections of a printed product 1 in the front by a light beam 23.
  • the light beam 23 is disposed at a height above the cutting table 2, which corresponds to the maximum thickness of a press ram 5. If now the press ram 5 is lowered from the uppermost end position onto the cutting table 2, a protruding part will interrupt the light beam 23 for at least a short time.
  • Another variant is the use of a light curtain, which can detect protruding areas on the front of the press ram 5, or a vertical displacement of the light barrier 20 across the thickness of the ram 5.
  • the cutting planes E2, E3 can be checked.
  • the light barriers would have to be arranged transversely to the conveying direction F adjustable.
  • Further advantageous solutions result from the scanning of areas of the press ram with existing means on the machine. For example, the knives 8 for head ormodebe440 with the help of their adjustment means 32 move until they touch the laterally highest point of the ram 5. 6, the knives 8 for head ormodeberough vertically offset so that the knife cutting edges 15 come to rest slightly below the lower edge of the ram 5.
  • the adjusting means 32 consist of a spindle drive 34 which drives the spindles 33 directly or via an intermediate gear, as well as a measuring system, for example a rotary encoder, which detects the position of the blades and is connected to the control device 25.
  • a measuring system for example a rotary encoder
  • the contact of the knife 8 with the ram 5 can be derived, for example, simply by measuring the current absorbed by the spindle drive 34, which increases significantly when touched. With the aid of the measuring system of the adjusting means 32, the highest point of the ram 5 can be measured directly.
  • FIG. 8 A further variant of the scanning of the press ram 5 with means already present on the machine is shown in FIG. 8.
  • the press ram 5 is first placed in its lowest position and then the centering arms 29, 30 are moved in the direction of the press ram 5 until they touch the lateral surfaces of the ram 5.
  • the centering arms 29, 30 are displaceably mounted on a guide 31 and are positioned by means of spindle drives 34 'and spindles 33' formed adjusting means 32 'analogous to the adjustment of the side knife 8.
  • the rear area of the press ram 5 can be scanned with the aid of the backstops 36, 37, which also have adjusting means 32 "and a measuring system. , 32 "can thus determine the effective size of the press ram 5 by the control device 25. If the control device 25 detects an error, this is displayed on the display device 38 and the drive device of the cutting device is blocked until the operator has corrected the upcoming error.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP05405608A 2005-10-27 2005-10-27 Méthode pour rogner des signatures Withdrawn EP1779984A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05405608A EP1779984A1 (fr) 2005-10-27 2005-10-27 Méthode pour rogner des signatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405608A EP1779984A1 (fr) 2005-10-27 2005-10-27 Méthode pour rogner des signatures

Publications (1)

Publication Number Publication Date
EP1779984A1 true EP1779984A1 (fr) 2007-05-02

Family

ID=35840653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405608A Withdrawn EP1779984A1 (fr) 2005-10-27 2005-10-27 Méthode pour rogner des signatures

Country Status (1)

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EP (1) EP1779984A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126478A (en) * 1936-01-04 1938-08-09 Photostat Corp Sheet cutting apparatus
JPH03208598A (ja) * 1990-01-11 1991-09-11 Hiroshi Kobayashi 三方断截機の断截装置
DE4113797A1 (de) * 1990-04-26 1991-11-07 Am Wohlenberg Gmbh Verfahren und vorrichtung zum einrichten eines dreischneiders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126478A (en) * 1936-01-04 1938-08-09 Photostat Corp Sheet cutting apparatus
JPH03208598A (ja) * 1990-01-11 1991-09-11 Hiroshi Kobayashi 三方断截機の断截装置
DE4113797A1 (de) * 1990-04-26 1991-11-07 Am Wohlenberg Gmbh Verfahren und vorrichtung zum einrichten eines dreischneiders

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 485 (M - 1188) 9 December 1991 (1991-12-09) *

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