DD276840A1 - CUTTING MACHINE FOR CUTTING PAPER, PAPER OD. DGL. WITH A CUTTING STATION - Google Patents

Abstract

The invention relates to a cutting machine for trimming paper, cardboard or the like with a cutting station, comprising at least one knife, a pressing device, a cutting table consisting of a back table, a front table, a front table extension and a manipulation device arranged above the cutting table surface on a Fuehrungssaeule mobile arranged turntable, a Schneidgutanschlag with ejectors, a Ausschubeinheit and a Aufrichteinheit is formed.

Description

For this 5 pages drawings

Field of application of the invention

The invention relates to a cutting machine for cutting paper, cardboard od. Like. With a cutting station, with at least one knife, a pressing device, a cutting table consisting of a back table, a front table, a front table extension and arranged above the cutting table surface manipulation device.

Characteristic of the known technical solution

When trimming paper, cardboard or the like, the material to be cut is fed to a back table, aligned at right angles to a side stop and a cut material stop. Thereafter, the material to be cut transported the material to be cut in the cutting position, the material to be cut is held by a pressing device and cut by the knife on its first page.

Subsequently, the material to be cut is rotated by 90 degrees, re-aligned, brought into cutting position by the cut material stop, and cut.

If the second cut is finished, the cut material is usually rotated again for the trimming of the third side by 90 degrees, and then there is a further rotation by 90 degrees, so that the cut material stack is then cut all around. Subsequently, in most applications, a division of the material to be cut in further processing useful z. B. sheet, etc.

Since the output formats are usually very large, the manipulation of the material to be cut in the cutting station requires a great deal of work. As the cutting operations are relatively straightforward, the automation of the cutting process is immediately available for these job groups.

In DE-GM 1898435 a "device, in particular for moving and applying the material to be cut on the work table of preferably paper cutting machines" described, held in the cutting material between the outgoing from the cutting table air cushion and against the air cushion acting on the cutting material pressure piston and then manipulated becomes.

A disadvantage of the apparatus described cliosor is that the material to be cut is held only non-positively, so that when manipulating the upper and lower sides against each other twisted werdon, so that a subsequent readjustment would be required against the Soiten- and Schneidgutanschlag.

Although the device described in the document DE 3613316 is a "device for cutting sheet-fed material", it can be automatically drained, in which the feeding, drawing and cutting processes can be carried out automatically, but this device operates with two cutting stations and requires a large amount of space Furthermore, it is uneconomical for relatively simple cutting operations such as round cutting, separating cut or simple dividing operations.

Object of the invention

The aim of the invention is to increase the performance of such machines, taking into account the required quality while reducing the physically heavy work.

Essence of the invention

The object of the invention is to make a cutting machine for trimming paper, cardboard od. Like. With a cutting station so that the use in flow production lines for fully automatic operation at the angle and Rundumbeschnitt and the division into benefit stack without interim waste and as a single machine is possible, wherein the material to be cut is held in a form-fitting manner during the manipulation operations.

embodiment

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying schematic representations show:

Fig. 1: a knife cutting machine in plan view without cutting and pressing device

Fig. 2: a knife cutting machine as shown in FIG. 1 in front view

3 shows a sectional view of a gripper member

Fig. 4: the top view of a knife cutting machine as shown in FIG. 1, wherein the cutting material is rotated 90 degrees

Fig. 5: the plan view of a partial section of a knife cutting machine, wherein the Ausschubvorgang is shown

Fig.6: the erection process.

In Fig. 1, a cutting machine without cutting and pressing device with an indicated section line 33 is shown. About a back table 2 of a cutting table 1, which is spatially divided into three at oak, back table 2, front table 3 and front table extension 4, the Schneidgutstapel 5 manipulating devices 6,7,8 are arranged.

A guide column 6 are a rotary unit 7 and a cut material stop 8, which are longitudinally on this, until approximately at the cutting line 33 are moved, assigned.

The rotary unit 7 consists of a, provided with a rotating mechanism 36 basic body 9, on the guide column 6, by means of a drive 35, by means not shown, for. B. a spindle, is movable, two associated with the base body 9 associated gripper drive 26 guides 10,10 and two horizontally movable on these gripper units 11,11.

The gripper unit 11 is formed by a carrier unit 12, which realizes the horizontal movement of the gripper unit 11 and a gripper 13 assigned to the carrier unit 12. The gripper 13 is connected to a drive means, for. B. a working cylinder 14, provided for the realization of a vertical movement.

The gripper 13 is preferably made of one another, by a force F, e.g. The gripping force F is monitored by sensors 17 arranged in the gripper 13.

The material to be cut 8 is formed so that an ejector 18 after completion of the cutting operation the cutting material stack 5 and the last wanted Nutzi η 19 on the front table 3 and on the front table extension 4 push

Racks 20 are preferably associated with the ejector 18, which are driven by a drive device 21 arranged in the slice stop 8. To control the cutting material stop 18 proximity sensors 22 may be attached to the front of the ejector.

In operative connection with the ejectors 18, there is an ejection device 23 associated with the front table extension 4.

the Ausschubeinrichtung 23 consists of a Schi 3ber 24, a guide member 25, which is preferably designed as a rack and a drive means 26th

The front table 3 and the front table extension 4 quick-release and adjusting elements 27 are assigned such that the front table extension 4 with its Ausschubeinrichtung 23 is quickly separated from the front table 3.

In addition to the ejection unit, the front table extension can also be assigned to an alignment unit 29 whose structure can be analogous to the extension device 23.

The operation of the invention is as follows:

A feed device 30 transports the stack of products 5 onto the back table 2. Subsequently, the feed element 31 of the feed device 30 returns to its starting position. The rotary unit 7 associated grippers 13,13 are by known drive means, for. B. the working cylinder 14,14 lowered. Thereafter, the cut material stack 5 is clamped by the gripper unit 11, 11, that is, it is centered on the back table 2, Fig. 1.

The horizontal Antriob the Groifereinheit 11,11 takes place by the, the guides 10,10 zugeordneter gripper drive 26z.B.

Working cylinder. In order to achieve an optimal clamping or alignment process, at least one gripper 10 with sensors 17 vorsohon that you; ^ mature force F in the context of a known control unit 28 monitor or control.

If the Schnoidgutstapol 5 fixed in position, proceeds Schneidgutanschlag 8 from its rest position to a start position, that is, up to the Schneidgutstapel. 5

Together with the turntable 7, the cut material stop 8 brings the Schnoidgutstapel 5 just before the cutting line 33. The Groifor 13,13 be aired, and the cut material stop 8 moves the cut material stack 5 in cutting position. By an ornoutos Klommen by the gripper 13, T5 of the product stack 5 is fixed from three sides in its position.

Thereafter, the squeeze, i. holding the Schnnidgutstapols 5 and the cutting process. After Boenciiyung the cutting process, the cut material stopper 8 moves back to its rest position and the pressure is released.

The turntable 7 brings the still clamped, cut on one side trimmed product stack 5 on the back table and turns it by 90 Gradjn the next cutting position, Fig.4.

The grippers 13,13 dissolve and are lifted up to their starting position, on the Einsatehöhe or to over the Schneidgutstapel 5, then rotates the rotary unit 7 back to its original position. Subsequently, a further lowering of the gripper 13, Ϊ3, and it repeats ^ I the procedure already described.

After the last cut and the loosening of the grippers 13,13 and the pressing, the cut material stopper 8 moves until shortly before the cutting line 33, and the ejector 18 pushes the cut material stack 5 on the front table 3 and the front table extension 4, Fig. 5. The Front table extension 4 associated Ausschubeinrichtung 23 transports the cut material stack 5 on a known discharge device 32, z. B. a backstop.

Before the slide 24, the Ausschubeinrichtung 23 the Schneidgutstapel 5 of the discharge device 32, it can be aligned with the aid of the Auf richteinheit 29 against the ejector 18 of the Schneidgutanschlages 8, Fig. 6. While the Schneidgutanschlag 8 is in the return, the him associated ejector 18 driven by the ejector 21 to its original position. All sensors and control switches or functional sequences are monitored in a known manner by computer and control units.

Will you. Cutting machine used as a single machine, it can be removed by releasing the quick-release elements 27, the pre-table extension with its associated Ausschubeinrichtung 23 and Aufrichteinheit 29. This makes it possible to use the cutting machine both in single and in fully automatic route operation.

Claims (6)

1. Cutting machine for trimming paper, cardboard or the like with at least one knife, a pressing device, a cutting table, consisting of a back table, a front table and a front table extension and a manipulation device, characterized in that the Schneidgutmanipulierungseinrichtung from one along the back table ( 2) on a guide column (6) movably angeoidneten, provided with a gripper unit (11) rotating unit (7), a Schneidgutanschlag (8) with an ejector (18) and a front end of the associated front table extension (4), with a Ausschubeinrichtung (23 ) and a Aufrichteinheit (34). 2. Cutting machine according to claim 1, characterized in that the gripper unit (11,11) by grippers (13,13) associated with the carrier units (12,12) and by the drive (14) are lowered onto the cutting table surface. 3. Cutting machine according to claim 1, characterized in that the gripper unit (11) by the gripper drive (35) is horizontally movable. 4. Cutting machine according to claim 1, characterized in that at least one gripper (13) arranged one above the other, by a force (F) towards Schneidgutstapel (5) acted upon lamellae (16) is formed. 5. Cutting machine according to claim 1, characterized in that at least one gripper (13) with sensors (17) which are connected to a, the gripper force (F) in dependence on the material to be cut, regulating control unit (28) is provided. 6. Cutting machine according to claim 1, characterized in that between the front table (3) and the front table extension quick-clamping and adjusting elements (27) for separating the front table extension (4) from the front table (3) are provided.