HU207011B - Cutting device with at least two cutting edges - Google Patents

Abstract

The invention relates to a cutting device with at least two cutting elements, in particular for nose cutting of split beaver bricks. The aim of the invention is a simple drive, easy and accessible adjustability of moving parts and effective production of Aufhaengenasen in roof tile Doppelstraengen. The invention has for its object to provide a cutting device which is arranged as a fixed part of the extruder. According to the invention, this is achieved by the cutting device having pivotable cutting forks (25), each of the cutting forks (25) being connected to a shaft combination consisting of a hollow shaft (29) and an inner shaft * which are preferably arranged coaxially inside one another. A cylinder / piston assembly, preferably consisting of a pneumatic cylinder (43) and a piston rod * and a pivoting square (37), causes the hollow shaft (29) and the inner shaft (30) to simultaneously rotate in opposite directions. It is further provided that the cutting forks (25) fork-shaped and the cutting elements of a cutting wire (26) are made interchangeable. The drive of the shaft combination is mechanical. Fig. 2 {cutting device; Cutting elements; Cutting wire; Cutting fork; Schwenkgestaengeviereck; Hollow shaft; Inner shaft; Nose cutting; suspension lugs; Gap Beaver bricks; Roof tile Doppelstraenge}

Description

BACKGROUND OF THE INVENTION The present invention relates to a cutting device with at least two cutting edges, in particular for cutting the noses of beaver pots.

It is known that the so-called. Strong roof tiles are produced as a flat continuous string coming out of a band press. beaver tailed pots with at least one so-called. it has a nose which serves to keep the tile on the roof structure.

Unlike standard three-dimensional tiles, roof tiles are degenerate in one direction. As a result, they form a flat, practically two-dimensional formation, which has many disadvantages, since it cannot be produced in the same way as three-dimensional tiles.

It is known that in the manufacture of roof tiles, a three-dimensional formation is created already at the exit of the band press, when the mouth dimension of the band press is formed so that the two sides of the three-dimensional body appear as beaver tile facing each other. These tiles have opposing nose strings which are interconnected by several cross pieces. The crossbar thus formed is then cut transversely in a conventional manner and the resulting formations are further treated with two beams of interconnected beaver-tailed tile as a common blank. In addition, care should be taken to remove the nose strings facing each other, apart from the remaining support nose, from the underside of the tile, as is known in the prior art for making individual roof tiles.

Cutting devices are known for the partial removal of these nose strings (see, for example, U.S. Patent No. 90,870), but do not consider the following aspects; If the cutting device is located on the mouthpiece of the belt press itself, it is virtually impossible to monitor the operation of the cutting device. Thus, for example, it is not possible to check that the nose has been precisely incised.

It is also known that opposing nose strings are joined by a connecting piece, which causes difficulty in part of the length of the nose strap being cut off, especially when the formation has to be broken to obtain two pots.

Another difficulty is the immediate removal of nasal waste, which is unnecessarily incinerated and dried in tile.

It is an object of the present invention to provide a cutting device which is mounted as a fixed piece on the web of a belt press, yet is easy to adjust, monitor and operate reliably.

According to the invention, this object is solved by rotating the cutting element holders between a rest position and a working position.

Preferably, each cutting member is connected to support shafts which are preferably coaxially spaced.

Preferably, the cutting element holders are rotated about the same axis of rotation simultaneously, e.g.

Preferably, the cutting device has a unit piston cylinder pivoting at the same time through a rectangular bar, and a pivoting rectangular bar is disposed between the cylinder piston unit and the shafts.

Preferably, the cutting element holders are fork-shaped, the cutting elements preferably being cutting wires and replaceable, and a guiding member, preferably a wedge guiding member, is provided in front of the cutting elements, preferably cutting wires.

Finally, it is advantageous if the shafts have a purely mechanical drive.

The invention will be described in more detail with reference to the drawings, which are exemplary of a cutting device according to the invention. depicts an embodiment.

Figure 1 is a front view of a three-dimensional, cut-through, double-roof tile formation from the belt press with two opposing nose strings and two opposed synchronous cutting devices.

Figure 2 is a side view of the cutting device.

Figure 3 is a plan view of the actuating mechanism of the cutting device in an open cutting position.

Fig. 4 is a top plan view of the cutting fork connected to the actuator of Fig. 3 with actuating axes cut along line IV-IV in Fig. 2.

Fig. 5 is a plan view of the cutting device actuator when the cutting forks are in the closed position.

Fig. 6 is a plan view similar to Fig. 4 of the scissors of Fig. 5.

Figure 7 shows a detail of the actuating shafts and a transition region of one of the cutting forks.

Figure 1 (1) is a front view of a double roof tile bar which is cut into suitable pieces of roof tile in a known manner using a known cutting device. The raw sides of such a roof tile are formed by two beaver-tile tiles (2 and 3) facing each other with a narrower side (5 and 6). The two beaver-tile tiles (2 and 3) are connected by connecting pieces (8). Where the connecting pieces (8) pass into the beaked tile (2 and 3), fracture slits (9) are provided which allow the beaming tile (2 and 3) to be separated from the connecting pieces (8) after firing. In order to keep the tiles on the roof slats, they are usually provided with one or two nails. During manufacture, these noses extending from the sides of the tiles (5, 6) to the front rounding are formed so that the nose strings (11, 12) extending along the entire length of the tile are separated from the underside of the raw tile. This requires a cutting device, which in this case is shown in Figure 1 (14 and 15) as a cutting device. Each of the two cutting devices (14, 15) is designed as a double cutting device because each of them has to cut through and separate one of the two nose strings (11,12).

In Figure 1, the left and right forks are intermittent

The line (17) is shown in the open position, i.e. in the cutting position, while the full line (18) is shown in the closed position.

The cutting forks are actuated by the drive (20 or 21), which are generally designed as pneumatically actuated cylinder-piston drives.

Figure 2 is a side view of the cutting device. The cutting element holder (25) and the cutting wire (26) can be seen in the figure, which is threaded into two wire holders (27). The drive of the two cutting element holders is provided by the hollow shaft 29, on which one of the cutting element holders is fixed, and the inner shaft 30, the other end of which is welded to the head (32). ) cutting element holder is fixed. The inner shaft (30) disposed in the hollow shaft (29) and the hollow shaft (29) are themselves housed as a single unit in the shaft bearing (33). The hollow shaft (29) and inner shaft (30) are rotated in the opposite direction of rotation by a rectangular link (37) which, in FIG. 3, rotates the cutting element holders (25) with respect to the longitudinal displacement axis (38); 4 and 6, these positions are then shown. Each of the levers of the rectangular linkages (37) is interconnected by means of the ball bearings (39). The hollow shaft (29) and the inner shaft (30) have a common axis of rotation (40).

The rectangular link (37) is connected by a yoke to the piston rod (44) of the pneumatic cylinder (43). In the extended position of the piston, as shown in Figure 3, the cutting device is in the cutting position shown in Figure 4. When the double roof tile bar (1) moves in the direction of the arrow shown in Fig. 4, the cutting wires (26) of the cutting element holder (25) separate the nose bars (11 and 12) from the raw tile until a predetermined momentarily, the control acting on the pneumatic cylinder actuates and pulls its piston with the piston rod 44 to the position shown in Fig. 5, as a result of which the cutting device is rotated from its cutting position by rotating the cutting element holders towards each other. the remaining portion (48, 49) of the nose strings is left as the nose (see Figure 6). As a result of the rotary motion, the oir strings (11 and 12) simultaneously divide transversely. The portions of the nose strings (11 and 12) detached from the inner surface of the beaked tile (2 and 3) fall, for example, and accumulate in a container. Roof tiles are moving in their path.

It is possible, for example, to optically inspect the remaining tin (48, 49) after cutting the appropriate portions of the nose straps (11 and 12).

The described drive (20, 21) of the cutting element holders (25) is very simple because the forks are opened or moved by reversing the hollow shaft (29) and the inner shaft (30). can be put in a closed position. Incidentally, in contrast to the reciprocating strings, the cutting device is fixed so that difficulties in moving these parts are also eliminated.

Since the double roof tile string (1) is softly deformable after exiting the belt press, guide wires can be provided in front of the cutting element holders (25) provided with the cutting wires (26), which ensure that the spacers (11 and 12) the removal of the nose strings occurs on the back of the tiles and not on or above them.

It is also possible for the cutting wires (26) to be used during the cutting, as shown in Fig. 4, in the stroke position or in the opposite direction.

It will be understood that the electric aperture of each of the movable parts and of the cutting element holders 25 can be adjusted such that the hollow shaft 29 can be adjusted relative to the clamping head 46 of the respective pivot arms. The stroke height or length of the piston rod 44 may also be varied when retracted and extended, as well as the relative position of the two cutting element holders 25.

The cutting device according to the invention thus makes it possible, in a simple and safe manner, to form the anchors (1) on double roof tile strings.

Claims (8)

Cutting device having at least two cutting elements, a cutting element holder and actuating means for actuating them, in particular for cutting the nose of a beaked tile, characterized in that the cutting element holders (25) are pivotable in a resting and working position. Cutting device according to Claim 1, characterized in that each cutting element holder (25) is connected to shafts (29, 30) which are preferably coaxially disposed with one another. Cutting device according to Claim 1 or 2, characterized in that the rotation of the cutting element holders (25) about the same axis of rotation (40) takes place simultaneously, e.g. 4. Cutting device according to any one of claims 1 to 3, characterized in that the shaft (29, 30) has a unit (43) for rotating the shafts (29, 30) simultaneously, in the opposite sense. 5. Cutting device according to one of Claims 1 to 3, characterized in that the cutting element holders are fork shaped, the cutting elements preferably being cutting wires (26) and interchangeable. 6. A cutting device according to any one of claims 1 to 5, characterized in that a guide member, preferably a wedge guide member, is provided in front of the cutting members, preferably the cutting wires (26). 7. Cutting device according to any one of claims 1 to 3, characterized in that an articulated rectangular link (37) is disposed between the cylinder piston assembly (43) and the shafts (29, 30). 8. Cutting device according to any one of claims 1 to 4, characterized in that the shafts (29, 30) have a purely mechanical drive.