JPS5850857B2 - 2. How do I know what to do with this strip? - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for transporting two strips of material in the form of a material, in particular of plastics, alternately to a processing unit, for example a line bonding device for plate-like workpieces. a transport unit for strip material provided with at least two transport rollers and relative to the strip transport direction for cutting the strip of strip material before exchanging it to another second strip of material to be transported; and a cutting device located downstream from the transport unit.

Devices of this kind are known which make it possible to change from one strip of material web to another without the processing unit having to be stopped for a short time for this purpose.

In this way, for example, the processing of plastic strips from two different strip rollers can be carried out one after the other without interrupting the working process of the line bonding machine.

This is because, after a full rotation of the tenth kneading roller of the strip of synthetic resin, a second, previously prepared, other strip can be transported by such a device without interruption of the line gluing machine. This is because it can be done.

However, this type of device has a relatively complex construction.

In addition to pairs of transport rollers that can be rotated separately and together, this device also includes a rapid cutting device that follows the strip material in the direction of travel, and a strip cutter that is installed in series with these pairs of transport rollers. It has dual position control devices for the strip of material.

As soon as the strip of web material transported in a straight line is cut by the rapid cutting device, both transport rollers rotate separately and the attitude control device cuts the front end of the strip of web material just cut into both Pull backwards from the area of the transport rollers.

At the same moment, the position control device of the second strip of web material forces its front end between the pair of transport rollers, which are already moving together again, so that they are
Steps of the strip of material now to be processed: 1) Grasp the front end of the tube so that it can be guided into the wire bonding machine.

Such a position control device for a strip of material in the form of a web is actuated by two grips that can run back and forth in the longitudinal direction of the strip, which grip the material in the web and prevent its withdrawal from the area of the transport rollers. Either it returns to the rear for the purpose, or it moves forward for the purpose of guiding it between the transport rollers for further processing.

Devices of this type are necessarily mechanically very complex and very expensive, and also due to the precision machining, mainly in the area of grip-equipped attitude control devices.
Often must be adjusted.

This type of device also has a relatively slow replacement process, so that increases in capacity are kept to a small limit.

The object of the invention is to provide a system for the alternating transport of two strips of material which is mechanically simply constructed and which is therefore operated more reliably than comparable devices of the known type.
The aim is to obtain a device that operates as quickly as possible.

This object is achieved according to the invention by the fact that the transport unit has two transport rollers arranged at a distance from each other;
A passage for the strips of both strips of material extends through the rollers, and a suppression unit is arranged in the area of the transport rollers between the passages for the strips of material. , this unit is designed in such a way that by means of its pressing surface it is alternately pressed onto one or the other transport roller with the interposition of a strip of web material to be transported in each case.

This feature of the invention results in a device in which mechanically expensive and frequently adjusted attitude control devices for the strip of material are completely eliminated.

Similarly, in a device of the inventive type, the device for moving the transport rollers of the transport unit separately or together is removed when changing the strip.

On the contrary, both transport rollers of the transport unit of the device according to the invention are arranged at a certain distance from each other in each operating phase, so that relative to their drive there is no special, separately moving or , so as not to require any preparation to enable all movements.

The known complex attitude control devices for strips of web material and the controls functionally associated therewith for the movements and modes of movement of the transport rollers are constructed in a relatively simple manner. is replaced by a pressing unit which can run back and forth in the region of the transport rollers during the passage for the strips of material web and in each case pushes one or the other strip of material web. , against one or the other transport roller.

Transport of the strip is therefore carried out or stopped as required.

retraction of the front end of a strip of material, or
Re-carrying is completely eliminated in a device formed according to the present invention.

Therefore, the device according to the invention operates very quickly and therefore:
Allows high working speeds during exchange and also allows short process times.

In one preferred embodiment of the device according to the invention, the suppression unit consists of two pressure rollers arranged side by side, which form a pressure surface by their circumferential edges and which in a direction perpendicular to the axial direction, in each case when one pressure roller is pressed against one of the transport rollers attached to it, the other pressure roller is pressed against the other transport roller attached to it. It is mounted on a shaft so that it can move forward and backward over a certain distance.

In this case both pressure rollers are on a common pace plate and therefore only one simple control device is required to enable them to run back and forth at right angles to their axis. It is only necessary.

In this embodiment, each transport roller has its own suppression roller assigned to it.

However, the pressing unit comprises only one pressing roller, which can run back and forth at right angles to their axis between the two transport rollers and alternately transport the strip of web material to be transported in each case. Meanwhile, under the intervention of
Alternatively, it is also possible for the other transport roller to be compressible.3For a simple technical configuration, it is even more advantageous if the transport roller is drivable and the pressure roller is freely rotatably mounted. It will be advantageous.

Furthermore, for each of the two strips of material, the transport unit is provided with a detent in series, which is formed from one stationary contact surface, on which the intervening strip of the respective strip of material is provided. It is expedient for the baffle plate to act below, at an acute angle to the direction of transport.

Therefore, 25-30 m/m (60-80 m/m in case of percentage)
In the case of production speeds of even less than m/m), slipping back of the strip of web material is prevented during the exchange process.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing one embodiment thereof.

The device shown in the figure comprises two transport rollers 1 and 2, which are arranged separately at a fixed distance and driven synchronously with a subsequent processing unit, for example an edge gluing machine.

Between these two transport rollers 1 and 2 passes through a passageway for two strips 3 and 4 of web material, which strips 3, 4 pass in the direction of the arrow 5 to the transport rollers 1 and 2. It travels on the base plate 6 of the device supporting 2,
They are also transported individually via the leaf spring lips 7 and 8 of the following processing unit.

A cutting device 9 with two movable cutting cutters 10 and 11 is arranged between the leaf spring lips T and 8 and the transport rollers 1 and 2;
It acts cooperatively with the cutter plate 12.

In this case, a cutting cutter 10 is provided for the strip 3 of material in the form of a strip, and a cutting cutter 10 is provided for the strip 4 of material in the form of a material.

On the inlet side of the strips 3 and 4 of material web, the device furthermore has two detents 13 and 14, which in operation hold the strips 3 and 4 of material web.
Slope blocks 15 and 1 in the direction of transport
6 is blocked by a spring baffle IT and 18 acting at an acute angle.

The method of operation of the illustrated device is as follows.

As shown, the strip of material 3 on the side facing away from the observer is pulled by the pressure roller 1 in the direction of the arrow 5 past the detent 13 and the leaf spring lip T of the following processing unit. Transported via 8.

This transport of the strip of material in the form of a belt 3 is carried out by one pressure roller 19 arranged between the transport rollers 1 and 2 pushing the strip of material in the form of a belt via a lever 20 of the transport roller 1 which is constantly rotating. This is done by pressing towards the peripheral surface.

Now, if the strip of material in the form of a strip 3 is to be replaced by a strip of material in the form of a material to be replaced by a strip of material in the form of a material in the form of a material in the form of a material in the form of a strip 4, the single pressure roller 19 is lifted perpulsively from the transport roller 1 via the lever 20, and the pressure roller 19 is lifted off the transport roller 1 as shown in dotted lines. It simply has to be pressed against the rotating transport roller 2 as it is.

Furthermore, at the same moment, the cutting cutter 10 of the cutting device 9 already described must be actuated percussively and the strip 3 of web-shaped material must therefore be cut.

The strip of material lying between the cut leaf spring lips 7 and 8 is removed while the end of the IJ tube 3 is further pulled out from the leaf spring lips 7 and 8 by a subsequent processing unit.
The free end of the strip 4 of the web material just transported follows immediately through the leaf spring lips 7 and 8.

If at a later point in time the strip of material in the form of a strip 4 is to be replaced again with a strip of material in the form of a material 3, the reverse order is carried out as described above.

[Brief explanation of the drawing]

The figure is a perspective view showing one embodiment of the device of the present invention. 1.2...--Transport roller, 3,4...--Strip, 19.20...--Press unit.

Claims (1)

[Claims] At least two transport rollers are provided for alternately transporting the twelve strips of material, in particular of synthetic resin, to a subsequent processing unit, for example a line gluing machine for plate-shaped workpieces. a transport unit for the strip of web material and downstream from the transport unit relative to the transport direction of the strip for cutting the transported strip of web material before exchanging it with another strip of second web material to be transported; a cutting unit arranged at a distance from each other, said cutting unit having one cutting cutter for each of said strips of material; It comprises two transport rollers 1, 2 arranged between which an elongated passageway for the two strips 3.4 of the web-like material extends; A pressure roller 19 is arranged between the passage for the strips 3, 4 of web-like material in the area of the transport rollers 1, 2, said pressure roller 19 having a pressure roller 19 with its pressure surface on the one hand or &L on the other hand. transport rollers 1 and 2
of strip material to be transported in each case between IJ
A device characterized in that one of the tabs is alternately pressed under the interposition toward one or the other transport roller 1, 2.