CS195812B1 - Device for cutting continuously running textile webs - Google Patents

Description

CZECHOSLOVAK SOCIALIST REPUBLIC (19) COPYRIGHT CERTIFICATE DESCRIPTION 195812 (11) (Bl) (22) Registered 13 07 71 (21) (PV 5121-71) (51) Int. Cl.1 * 3 D OB H 7/04 (40) Published 29 08 79 SUBSCRIPTION FOR DISPATCHES AND DISCOVERIES (45) Issued 15 00 82 (75) Author of the Invention VYROUBAL ANTONÍN, PROSTĚJOV (54) Continuous textile cutting machine The object of the present invention is to provide a device for cutting a flat, continuous web material. The device is primarily intended for continuous cutting, that is to say at which the cutting is to be periodically repeated during the working cycle, namely during continuous, uninterrupted movement of the material to be processed.

Various devices are known for continuous material cutting. One of them uses biaxial cylinders, between which a material strip extends from which the desired shape, for example baby birch, is to be cut. A chopper is attached to one of the rollers, which periodically cuts the feed material when the rollers are rotated to feed the feed material. The surface of the second cylinder is formed by a rigid resilient material, into which the chopping knife is pressed into the counter-roller during rotation. The surface of the second cylinder may also be made of an inelastic material in which a cut-out of the corresponding cutting blade edge is formed. In the latter case, however, the mutual angular position of the two rollers must be adjusted very precisely to ensure that the knife blade actually reaches the counter-roll cutout.

This device is designed for paper aplastic material. It would not be satisfactory for the textile material since it is clear from the structure of the textile material that it is generally not possible to achieve a complete overlap of all the fibers of the textile layer in the manner described, but to which the chopping knife has only a short-term pressure. appropriate management.

Another known device for shearing a single layer of material uses a chopping knife arranged in the form of a backing grate, wherein a textile material is deposited which is a rotatable moving roller pressed. The disadvantage of this device is the discontinued process or feed of the material. Another known device works with the same disadvantage, in which the moving cylinder presses the material and the cutting knife from below.

Of course, for example, a known die-cutter and rigid spring washers, commonly used to cut, for example, garments from a layered multi-layer charge, could also be used to form the textile material strip.

However, for some work operations, it is not preferred to rip the part in several layers. In particular, continuous production from a single sheet-shaped material, such as pocket pouches, where the last manufacturing operation is being cut, or the manufacture of wrapped shoulder liners, where the cutting of the one-ply material is 195812 195812 the initial manufacturing process operation . For example, in these manufacturing processes, mowing is incorporated into the production cycle, so that it does not require wage costs for layering, self-punching, and finally subsequent stratification. Also, from the point of view of the acquisition and maintenance costs, the displacement of the multi-charge charge against continuous cutting of one layer is disadvantageous.

A further known and commonly used device for cutting one layer of a particularly textile material into a continuous production of the aforementioned examples operates with a discontinuous movement of the material and would not be treated with the feed material in a continuous manner. The purpose of the invention is to eliminate the disadvantages of other devices. The invention is based on the finding that the breaking of the textile material and the like by the pressure of the chopping knife allows the two pieces of material to be torn apart at the cutting point.

The device for cutting a flat, continuously moving fabric comprises a rotatable cutting cylinder provided with a cutting member, under which a washer is placed and is characterized in that the washer is provided with a resilient member for resilient deposition in a direction perpendicular to the feed direction. -terial.

The substrate may be, for example, a root plate disposed at one end on the jaw, the resilient member being located below the remaining portion of the planar plate or another cylinder resiliently and resiliently positioned by the flexible member relative to the rotating cutting roller provided with the cutting member will be explained in more detail on the individual embodiments.

The pad may be forced into engagement with the cutting blade not only by the action of a mechanical spring but also by a pneumatic member, etc. As will become apparent from the following description, the tensile action in the cut line is thereby obtained to the part of the material from which the cutter is cut. In each of the individual shear stages, the action of the spring-loaded, pressed backing acts in conjunction with the pressure as well as the progressive removal of the relocated body from the rest of the material. At the same time, however, the material is withdrawn and thus placed in a position suitable for subsequent cutting. Suitable sizing, in particular of the force acting on the spring-loaded substrate, permits continuous cutting of several material layers simultaneously.

Further advantages and details of the device according to the invention can be seen in the accompanying drawings, in which: FIG. 1 shows a schematic arrangement of a single arrangement of the device according to the invention; FIG. 2 shows a section of the device of FIG. Fig. 4 is a schematic representation of the arrangement of rollers of another device according to the invention; Fig. 6 is a schematic representation of the arrangement of rollers of another device according to the invention; and Fig. 7 is an exploded view of a roll with a chopper for cutting a wrapper-like material on a shoulder. inserts.

1 and 2, the device according to the invention comprises a rotatably mounted cylinder 1, with a chopping element 2 and a washer 4 fixed thereto, between which and the material 3 being fed in the direction of arrow A between the curved surface of the cylinder 1. the position of the washer 4 at the distance B of the circumference of the circumscribed circle of the cutting member 2 represented by line A, with A being greater than B. On the base plate 7 there is a pair of brackets 8 which support the rotatably mounted cylinder 1. The pivot pin 41 of the pivot support 4 is spring-loaded by the pusher force P with the cutting member 2 and the pressure spring 12 which is fixed in the adjustable caliper 13. The brackets 9 also form a support for the free-pivoting bobbin 10 with a web of textile material 3 guided by the conductor 11. the caliper 5 is adjustable by means of a bolt 14 and a nut 15. A known means for giving Gas-time limit rotational movement of the cylinder 1, for example, e-lektromotor with suitable gear making equipment it is not shown.

The spring-loaded pressed pad 4 consists of two parts 4a, 4b, of which part 4b is arranged adjustable in the direction of the moving material 3 carried by the cylinder 1, i.e. in the direction of the arrow C, Fig. 1. at the set position firmly grips-price by the lower wall of the screw head 6.

In order to achieve the purpose of the present invention, it is expedient to provide the cutting member 2 with relief, for example at an angle of 15 [deg.], In the form of a functional roller, wherein the direction of rotation of the roller 1 on which the cutting member 2 is arranged is such that the working width starts with a relief. FIG. 3 illustrates an exemplary cutting relief of the cutting member 2 by an arc and a tangent t at a point O of the cutting member 2. This angle can be, for example, 15 °.

For the operation of the described device, the textile material weave 3 wound on the spool 10 or the spool 10 is placed freely on the shaft or pin 16 between the brackets 9. The beginning of the material web 3 is threaded through the guide 11 and introduced into the gap between the cylinder 1 and the housing 4 at actuating the known rotational motion imparting means to the cylinder 1, for example an electric motor (not shown) with a transmission device. When the cylinder 1 is rotated in the direction of arrow C, the inserted material 3 is captured by the cutting member 2, drawn into the working space and by the cutting member 2 in cooperation with the washer 4, the material is cut from the material, the cutting line of which is defined by the cutting face. member 2.

Claims (7)

195812 intermittently moves the material in the direction of the arrow C to further cut, which starts after the cylinder has been rotated 360 °, calculated from the position at which the cutting member 2 began to act on the intermediate material 3. until the stock of material 3 wound on the spool 10 is depleted. Separate shapes, for example, duct components according to the arrangement and shaping of the mowing member 2 fixed to the surface of the cylinder 1, in the embodiment according to FIG. . In the prior art it is easy to ensure the interchangeability of the cylinder 1 with a different roller with a differently shaped or arranged chopping knife and the adjustment of the corresponding treatment space, in particular of the washer 4, SCOPE 1. The web here passes in the direction of the arrow A. Similarly, in the embodiment of FIG. 6, two cylinders 1.61 with the same sense of rotation are used to achieve the same purpose. arranged in the direction of movement of the material (3) by means of a fixing screw (6) relative to the first part (4a). CLAIMS 1. A device for cutting a flat, continuous web material comprising a rotatable cutting cylinder provided with a cutting member, under which a washer is disposed, characterized in that the washer is provided with a resilient member for resilient deposition in a direction perpendicular to the feed direction of the material. 2. Apparatus according to claim 1, characterized in that the washer is formed as a planar (41 at one end mounted on a pin (41), the resilient member being located under the underlying portion of the planar plate (4). 3. Apparatus according to claim 2, characterized in that the planar plate (4) consists of two parts (4a, 4b), the second part (4b) being provided if the newly mounted cylinder has a different size or if the same size is different. the size of cylinder 1 changed the size indicated in FIG. 1 is a line A. FIG. 5 is a schematic illustration of another possible device for carrying out said operation. The desired effect is enhanced by the interaction of the cylinder 1 with the oppositely disposed cylinder 51, which is provided with a rotational movement of the opposite direction and a greater circumferential velocity, from a source, such as an electric motor, of a suitable gear mechanism (not shown). 4. Apparatus according to claim 1, characterized in that the washer is formed as a rotatable support roller (51) resiliently and resiliently arranged by a resilient member relative to the rotatable cutting roller (1) provided with the cutting member. 5. Apparatus according to claim 4, characterized in that the rotary cutting roller (1) and the rotary support roller (51) have the same sense of rotation, the peripheral speed being different. 6. Apparatus according to claim 4, characterized in that the rotatable cutting roller (1) and the rotary support roller (51) have the opposite direction of rotation. 5 sheets of drawings Severografia, n. P., Plant 7, Most