DD216408A1 - TRIPLE CUTTING MACHINE FOR BOOK OR BROCHURE CUTTING - Google Patents

Abstract

The invention relates to a three-knife cutting machine for edge trim of books or brochures. Based on the aim of the invention to make a three-knife cutting machine so that the tearing of the book or Broschurenruecken is avoided when cutting with certainty, the setting times are further shortened and the scope of the machines is increased, is that the Seitenmessertraegern or the Seitenmessertraegerkassetten is assigned via a Fuehrungsschiene provided with self-acting acting means Vorschneideeinrichtung.

Description

 * Title

Three knife tendon sidemasefaine for book or booklet trimming ·.

Field of application of the invention

"The invention relates to three-in-one self-egg machine; rjir the Kantenbesohnitt of books or brochures with at least one of eine® cutting table, 'a Preßein-. ·· direction, two side knife carriers with .Seitenmessern. Yorschneidemessern and two ordered Schnsidssiätion. D @ r ~ artige.Dreimesserschneidemasehinen are ice Zweistationenmasohinen example Trimiaautomaten and as Eiiiststion @ nsaa ~ 'achinen eg three-knife cutting machine SBI-ES iri'Ferti-. Mungsstraßen as well as single machines im'linsata.

Characteristic of the known technical solutions,

When machined edges of books Brosohureh or- with Kartoneinbänden breaks the 'spine at the interfaces, often, especially, wena the HUckenbeleimung is not yet sufficiently -getrocknet bsi * when the cardboard cover with a special print job, or: a brightening

.20 'layer is particularly susceptible to cracking so that the raw board is visible at the interfaces »

To avoid this lack of quality in the books or brochures, 'different solutions are already known on three-knife cutting machines with one or two sneezing stations, but some of them are too less productive or too unsafe at a higher working speed and in the absence of measuring time -sar proved.

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Quite good work results in the pre-cutting of the Buchriicken were achieved with a DreimessersohneidemaschineDD, WP 10 47 48, in each Schneidgutrüokenanschläg a pivotable Vorschneidemesser is arranged, which recedes during the Schneidgutanlegens behind the abutment surfaces of Schneidgutrückansohlages and when swinging the Schneidgutrückenanschlag from the Soneidgutförderbahn one of the following Cutting line corresponding Ritz produced on the spine.

A disadvantage of this three-knife cutting machine that a precise adjustment to tenths of a millimeter accurate distance, which is in the cutting cycle encountered pre-cutting and side knife is necessary. Inaccurate setting after scoring the scoring line remains visible or the effect to be achieved and the book or Broschurenrücken tears or when setting a too small gap increases the risk of collision of closely passing each other knife edges of Vorschneide- and side knife considerably.

With the patent application, file number DD, WP B 26D / 246 3176, these shortcomings were made by the swinging away the Vorschneidemesser towards the machine center and thus the risk of collision between the Vorschneide- and side knives.

Due to the solution variant set forth in the patent application, this invention, however, can only be realized on three-knife cutting machines in which the material to be cut is pushed into the cutting station by means of an insertion device under the front knives and brought into the cutting position against intermittently movable cutting back slits.

In two-station machines or cutting machines with ^ O pliers insert the invention is not applicable and thus a pre-cutting the spine is not possible.

The disclosed in DE OS 24 24 325 invention in which the side knife consists of two separate parts at a certain angle to each other, wherein a portion of the knife cuts through the back of the book or the Brösehur, is in cutting machines, against .eine cutting pad cut, not i'ealisierbar, since the 'book or Broschurenrüeken cutting through part of the side knife plunges below the Schneidgutauflagefläehen the two lower blade.

Object of the invention

The aim of the invention is to make three-knife cutting machines for book, or Bröschurenbeschniti with Vorsehneidemessern so that the tearing of the book or Brosehurenrücken is avoided with certainty. The means to be used with a low cost to produce, easy to handle by the operator and are universally applicable.

Object of the invention

The object of the invention is to provide a knife cutting machine for book or book sewing with one or two cutting stations, which can be used both on production lines and as a single machine, which automatically has effective self-acting means for pre-cutting book or Broßchurenrücken , can be produced with little effort and it can not come to collisions of the side knife with the Vorschneidemes'sem.

Essence of the invention

Erfindungsgeiraäß the object is achieved in that the side knife carriers via a guide rail a Vorschneidemesser bearing, with self-acting means Vorschneideeinrichtung and the guide rail and the base plate of Vorschneideeinrichtung each have a scale, the Wirkzusammenhang'mit the format size and the insert height of the book to be cut - or Brosehurenstapels stand, is assigned.

On the blade holding lever is a distance to the side knife forming "slider, which ensures the occurrence of signs of wear, the distance between the Vorschneldemessern and the side knives mounted.

In three knife cutting machines with knife changing cassettes, the guide rail with the pre-cutting device is preferably attached to the side knife carrier cassette.

By the application of the invention it is possible books

or brochures to be cut on three-knife trimmers with one or two cutting stations against a cutting surface or against a bottom knife with or without automatic feeder. For three-knife harvester with cutterhead cassettes, the adjustment becomes even easier since it can be done outside the machine.

Embodiment The invention will be explained below with reference to an embodiment.

The accompanying drawings show 1: the schematic side layer of a three-knife

Sohneidemaschine with a cutting station and the Vorschneideeinrichtung with Vorschneidemessern,

2: the sohematic front view of the side knife carrier and the pre-cutting device in the position shown in FIG. 1,

3 shows the sohematic side view of a cutting station without a front knife with pre-cutting device when the pre-cutting knife is attached to the back of the book or brochure stack when loading

1J0 of the cut.

'Pig. 4: the schematic side view of the cutting station without front knife with Yorschneidelnrichtuhg ·. during the Durchsehnittphase. , '

In a Dreimesserschneidemaschise Fig. 1 is a Buo'h- or Brosehurenstapel 14 placed on a cutting table 8 position ™ exactly in Schneidpositioii, pressed by a pressing device \ 5 against the cutting table 8 and by: two side knives 5 and a transverse knife cut 27 at the related motion connection with DE® Bintourenantrieb d r machine side knife carriers 1 - ermess and (Ju he attached carrier 28 ', ..'.- "· at each side of the knife carrier 1 is above the Messer'anlage a guide rail 3 provided on the je a forschneideeinrichtung 4, which is adjusted and fixed according to the format size and the insertion height of the book or brochure stack 14 according to an existing on the guide rail 3 and the base plate 6 Maßskale 2 and 25. In Dreiimesserschneidemasehinen salt blade replacement cassettes is the guide rail 3 for receiving the · Vorschneide- device 4 belonging to the Seitenmesssrträger 1 page meter carrier cassette 30 assigned.

The Vorschneideeinriehtung 4 consists in the exemplary embodiment of a base plate 6, an Aohsbolaen 18, a lever 19,

1.55 a lever 9, an axle 7 and a mounted on the axle 11 knife holder 12, to which a slider 26 and the ..Yorschneidemesser 13 are attached. The lever 19 is pivotally mounted on the Acbsbolsen 18 and is pressed under the action of the spring 23 against a arranged on the base plate 6 stop 17. The lever 9 is hingedly connected at one end to the lever 19 and is extended by a spring 21 which acts on the lever 19, the stop 20 being extended, and at the other end of the lever 9 is the knife holder 12 pivoted mounted on the axle pin 1.1 and is by the spring 16, which is attached to the lever 9, against the stop 10 in his®? Limited effect. ,

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The operation of the pre-cutting device will be explained in more detail.

The gate cutting knife 13 has the task of leading the

Just spine the back of the spine exactly where the son of the side knife 5 penetrates the spines of the book. The tip of the Vorsohneidemesser is initially about 5 mm below the edge of the side knife 5, the distance of the Vorsohneidemesser 13 to the side knives BE contributes 0.1 mm and is forcibly guided by the slider 26.

While the side knives 6 cut in an oblique direction of movement of the cutting material stack 14, the Vorsohneidemesser 13 moves under the action of the force acting on the knife holder 12 and the lever 19 springs 16 and 23 at the back of Buoh or Broschurenstapels down along the knife holder 12 the cutting table 8 touches down.

The Pührungechiene 3 is assigned a lockable stop 21, which serves to ensure that after a single format setting, z. B. at a Rare knife change, the pre-cutting device 4 does not have to be reset. Set the Vorschneideeinrichtung 4 in an accident on the press plate of the pressing device 15 or on the book or brochure stack 14, the knife holder and the lever 9 is under the force of the spring 22 to

Lower edge of the knife carrier 1 pushed back.

After the upward movement of the side knife carrier 1 with the side knives 5, the knife holder 12 and the levers 9 and 19 are again frictionally against their associated stops 10, 17 and 20 at.

Claims (4)

Erfindungaansprach , Three knife cutter aasohine with. one or two cutting stations for the book or Brochuchurenbesohnitt with at least one of a cutting table (8), a pressing device (15), two side knife carriers (1) with side knives (5) and two roughing knives (13) existing cutting station, characterized in that the Side knife carriers (1) via a guide rail (3) is assigned to the Vorschneidemesser (13) carrying, with selbstätig acting means (16, 22, 23) provided Vorscbnetdeeinrichtung (4). 2. Dreimesserschneideiaaschine according to item 1, characterized in that the guide rail (3) and the base plate (6) of Vorschneideeinrichtung (14) each have a scale (2, 25) in the Wirksusamnsenhang with the Pormatgröße and the insertion height of the book to be cut or brochure stack (14). 3. Dreimesserschneideaiasehine according to item 1, characterized in that the blade holding the lever (15) is assigned to the side knife (5) distance-forming slider (26). 4. Dreimesserschneidemasohine according to item 1, characterized in that the guide rail (3) with the Vorschneideeinrichtung (4) is assigned in Dreimessersohneide machines with blade changing cassettes preferably the Seitenmesserträgerkassette (30).