JPH0716936B2 - Cutting device having at least two cutting members - Google Patents

Abstract

The cutting device has two cutter components. It is especially suitable for split plain tiles. The cutter carriers (25) may be pivoted into their inoperative and operative positions. Each cutter (25) is connected to a spindle (29, 30), the spindles being arranged coaxially (40) one within the other. Thus the cutter carriers pivot about the same axis (40) at the same time in the manner of scissors. The cutter carriers (25) are forked and the cutters (26) are in the form of wires and interchangeable. This cutting device is permanently installed on the extruding press belt. It is nevertheless easy to regulate, can be monitored and operates reliably.

Description

The present invention relates in particular to a cutting device having at least two cutting members for cutting the nose of a double-straw straw.

It is known that so-called strip roofs are made by straws which are continuously extruded in a flat lying form from an extruder. At that time, the so-called two-straight straw has at least one so-called nose, which is
It helps to hold the straw fixed to the roof structure.

Unlike standard, obviously three-dimensional shaped bricks,
The straw roof is one dimension lower. Therefore, it is treated as a flat, effectively two-dimensional form. Such treatment has a number of drawbacks. This is because it cannot be manufactured in the same form as a three-dimensional brick.

It is known that even in the case of straw roof production, a three-dimensional morphology already occurs at the outlet of the extruder. That is, the cylinder mouth of the extruding machine is configured such that both side walls of a three-dimensional object come out in a straw shape with two lower sides thereof facing each other. The straw has rail-shaped protrusions facing each other. Also, they are connected to each other by a plurality of horizontal webs.

The extruded strip of such a shape, after being extruded, is then laterally divided in the usual manner to give a three-dimensional composition having two unfinished flat straws joined together, Are treated like normal straw raw. However, it should be noted that the rail-shaped protrusions facing each other need to be removed from the lower side of the straw to the remaining fixing protrusions. This is also known during the conventional manufacture of single roofs.

The cutting device used for the partial removal of rail-like projections of this kind, however, does not consider the following points. That is, if the cutting device is arranged at the mouth of the press, it is virtually impossible to monitor the operation of the cutting device. For this reason, for example, it is not possible to check whether or not the protrusion is accurately cut.

It is also known to connect rail-shaped projections facing each other with a connecting web, but in this case it is difficult to cut the rail-shaped projections, leaving part of their length.
Difficulties arise in separating the constituents, in particular to obtain two straws.

Furthermore, since it is difficult to immediately remove the scraps of the protrusions,
We have to do the unnecessary thing of baking and drying together.

It is an object of the present invention to produce a cutting device which is arranged as a fixed part of a pressure line of a pressure machine and which allows easy adjustment, monitoring and reliable work.

In one of the claims, the features of this type of cutting device are described.

Next, an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 shows a three-dimensional 2 piece that has been cut laterally from the extruder.
The front view showing the continuous straw structure, the rail-shaped protrusions facing each other, and the two synchronous cutting devices facing each other, FIG. 2 is a side view of the cutting device, and FIG. 3 is a cutting device. FIG. 4 is a plan view showing the operating mechanism of the device in an open cutting position, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. FIG. 5 is a plan view of the cutting device operating mechanism similar to FIG. 3 in a closed position, and FIG. 6 is a fork shape of FIG. 5 similar to FIG. FIG. 7 is a plan view of the cutter, and FIG. 7 is a partial view of the transition region of the operating shaft and the fork-shaped cutter.

FIG. 1 is a front view of a two-band article 1 having a straw roof.
This strip is cut in a known manner laterally by means of a known cutting device into a corresponding straw raw product. The sides of this unfinished product are two or three flat straws with the bottoms facing each other.
The narrow long side portions 5 and 6 of the flat straw are visible in the drawing. The two straws 2, 3 are connected by a connecting web 8. A cutout 9 for breaking is provided at the transition portion from the web 8 to the straw, and the cutout 9 is cut after baking.
2,3 can be separated from the web 8. To fix the straw to the main body, the straw is usually provided with one or two protrusions. These projections extending from the end of the long side to the front chamfer side are separated by rail-like projections 11 and 12 extending over the entire length of the straw except those left behind on the raw straw material. It is formed by For this separation, the cutting device 14,1 shown in FIG.
5 is required. Each of these cutting devices 14, 15 is configured as a double cutting device. Both rail-shaped projections 1
This is because each of 1 and 12 must be cut and separated.

In FIG. 1, the left and right fork-shaped cuts are shown in broken lines to indicate that they are in the open position, that is, the cutting position.
It is shown in solid line.

The operation of the fork-shaped cutter is performed via the drive devices 20 and 21. These drives are usually configured as pneumatic cylinder / piston devices.

In FIG. 2, the cutting device is shown from the side. One fork-shaped cutter 25 is shown in the drawing, and a cutting wire 26 is stretched between two wire holders 27. The hollow shaft 29 is used to drive both fork cutters 25.
However, on the other hand, an inner shaft 30 with a head 31 serves. One fork-shaped cutter 25 is attached to the hollow shaft 29, and the other cutter 25 is attached to the inner shaft 30 via a welded joint 32. Inner shaft 30 extending inside hollow shaft 29
And the hollow shaft itself are supported as a unit in the swivel bearing 33. The reverse rotation of the two shafts 29, 30 takes place via a quadrilateral rotation linkage 37. Linkage 37
Is pivoted to the open position along the longitudinal slide axis 38 in FIG. 3 and to the closed position in FIG.
This can be seen from FIGS. 4 and 6. The individual levers of the quadrilateral pivot linkage 37 are connected to each other via ball joints 39. The swivel axis of both shafts 29, 30 is 4
It is indicated by 0. Through the yoke 41, the linkage 37 is
It is connected to the piston rod 44 of the piston of the pneumatic cylinder 43. In the piston delivery state of FIG. 3, the cutting device is in the cutting position shown in FIG. When the two-stratified article 1 with a straw roof moves in the direction of the arrow in FIG. 4, the cutting wire 26 of the fork-shaped cutter 25 cuts the rail-shaped projections 11 and 12 in the longitudinal direction of the raw straw product. This disconnection operation continues at a given point in time until the controller acts on the pneumatic cylinder 43 and the piston retracts the piston rod 44 to the position shown in FIG. When the piston rod 44 is retracted, the cutting device is swung from the cutting device by the mutual swiveling of the fork-shaped cutters 25, and the remaining portions of the rail-shaped projections 11 and 12 are moved to the projection 4
Leave it as 8,49. Due to the pivoting movement, the rail-shaped projections 11 and 12 are simultaneously cut laterally. The rail-shaped projections 11 and 12 separated from the inner surfaces of the straws 2 and 3 fall and are collected in, for example, a container. The straw keeps moving on the transport path.

After cutting off the corresponding parts of the rail-shaped projections 11, 12, the remaining projections can be monitored, for example, visually.

The described drive of a fork-shaped cutter is extremely simple.
This is because the reverse movement of the shafts 29, 30 positions the cutter in the closed position or the open position. Unlike the reciprocating type cutter, since the cutting device is provided as a fixed part, the difficulty that occurs in the reciprocating type cutter does not occur.

The two solid belts 1 having a straw roof are soft and deformable after being extruded from the extruding machine, so that the fork-shaped cutter 25 having the cutting wire 26 is provided in front of the forked-shaped cutter 25.
A wedge-shaped guide member 50 that defines a predetermined distance between the rail-shaped projections 11 and 12 can be arranged as shown in FIG. This guide ensures a corresponding spacing, so that the cutting of the rail-like projections 11, 12 takes place at the backside of the straw and not above or inside the backside.

In principle, the cutting wire 26 can be used in a cut-off posture and can be pulled out in the opposite direction as shown in FIG. 4 when cutting.

Needless to say, all moving parts are adjustable, including the opening of the forks of the fork-shaped cutler 25. That is, the corresponding swivel plate fastening heads 46 of the linkage 37.
The swivel positions of the shafts 29 with respect to each other are adjusted relative to each other. As a general rule, the piston rod 44 is
The process height or the piston rod length can be changed as well as the relative positions of both fork-shaped cutters 25.

With the above-described cutting device, it is possible to easily and surely form the hooking projection portion in the case of the double billet having the straw.

All individual parts and features shown in the above description and / or drawings, as well as their exchanges, combinations and variations, are within the scope of the invention, and yet n individual parts and individual Values from n = 1 to n → ∞ are given to the features.

Claims (4)

[Claims] 1. Two cutting members and 1 arranged on a support.
In a device for cutting the projections of a split flat tile, which has one drive and is arranged in a stationary manner, each cutting member is a pair of parallel bars (25) stretched with a cutting wire (26). Of the split flat tile, characterized in that it is configured and pivotably arranged on a common support for each bar pair by means of the drive shaft (29, 30) specific to each bar pair. A device for cutting protrusions. 2. Device according to claim 1, characterized in that the drive shaft (29, 30) of the cutting member is connected to the drive device (20, 21) via a quadrilateral pivotal linkage (37). . 3. Device according to claim 1, characterized in that the two drive shafts (29, 30) are arranged coaxially to each other. 4. A piston-cylinder device (43) as a drive device.
2. Device according to claim 1, characterized in that the piston rod (44) of the piston-cylinder device is connected to a quadrilateral swivel linkage (37).