DE2648947B2 - DEVICE FOR CUTTING FLAT GLASS - Google Patents

Description

The invention relates to a device for cutting flat glass, with a along a rail or a template movable cutting carriage, which can be lowered onto the glass plate and raised into a Position movable cutting tool carries, the lowering and / or lifting of the Schneidwerkzcuges takes place via a cylinder actuated by compressed air.

Automatic cutting devices work in many cases on the principle that lifting and lowering of the cutting tool as well as the «> application of the required cutting pressure pneumatically, that is, with the help of compressed air. The cutting carriage is included to supply compressed air Connected to a stationary compressed air line via a compressed air hose. Hi

In these known devices, the compressed air hose is subject to high wear. That can lead to malfunctions and interruptions in the product

management process.

The invention is based on the object of cutting devices of the type mentioned to improve that their susceptibility to failure is reduced.

According to the invention, this object is achieved in that a compressed air reservoir on the cutting carriage is arranged that the cutting cylinder for lowering and / or raising the cutting tool with compressed air provided.

In the case of a cutting device designed according to the invention, the compressed air hose is omitted as Connection to the stationary compressed air line, eliminating all associated difficulties. Soft stresses such compressed air hoses are exposed to, one can recognize that the Cutting carriages must travel at a speed of around 90 m / min when making a clean cut should be achieved. These high speeds and delays or accelerations lead to considerable mechanical stress on the compressed air hoses.

In an expedient development of the invention, there is between the compressed air reservoir and the cutting cylinder a compressed air regulator is interposed, which ensures a constant cutting pressure.

The compressed air reservoir can be designed so that it is sufficient for a number of cutting operations, and is then exchanged for a filled memory or refilled.

In order to fill up the compressed air reservoir after each cutting process, in an expedient further development the invention of the compressed air accumulator be provided with one half of a quick-release coupling, that in the starting position of the cutting carriage in the stationary, connected to the compressed air line the other half of the quick release coupling engages.

It is also advantageous that for tightening the cutting carriage to fill the compressed air reservoir provided starting position a stationary pressure cylinder is provided, which with the Cutting carriage can be coupled via an electromagnet. This ensures that the quick release coupling engages securely guaranteed.

The device according to the invention can be used with particular advantage in a cutting device, in which the cutting carriage on the one hand and the cutting bridge carrying the slide rails for the cutting carriage on the other hand are the two elements of a linear motor. In this case you don't need any moving parts to be provided for the drive of the cutting carriage, so that a further Saving of the structural parts subject to wear can be achieved. The power supply of the cutting carriage can expediently take place with the help of sliding contacts via a contact rail.

The invention not only eliminates the need for complex and failure-prone supply lines, but it is also used also achieved that the strokes of the cutting cylinder are faster because when venting the Compressed air lines now only have to be vented very short lines. Another benefit is there in the fact that by eliminating the towing cable together with the cable trolley a strong reduction in the Noise nuisance occurs.

A preferred embodiment of the invention

is described in more detail below with reference to the drawings. From the drawings shows

F i g. 1 shows a cross cutting machine for cutting a continuously moving glass ribbon into an overall view,

2 shows, in an enlarged representation, the cutting carriage moving along the guide rail and

3 shows the cutting carriage shown in FIG. 2 in a side view.

In the illustrated embodiment, the invention is a, ·; a cross-cutting machine for itself Continuously moving glass ribbon is shown, but of course it is also used in many others Realize cutting machine types.

The glass ribbon to be cut I runs over a roller conveyor, the transport rollers 2 in the Frame 3 are stored. The roller conveyor together with the booms 3 is spanned by the cutting bridge 4, which is mounted so as to be movable in the longitudinal direction of the glass ribbon 1 via consoles 5 on rollers 6, 7. The roles 6.7 run on rails 8, 9, which are mounted on the supports 10, 11. The drive device for the movement the cutting bridge in the longitudinal direction of the glass ribbon and the device for coupling the cutting bridge with the glass ribbon, common constructions are not shown in the drawings.

The cutting carriage 15 with the cutting tool runs along the cutting bridge 4 on the slide rails 14 16, which carries out the cross-section on the glass ribbon. To the The compressed air reservoir 17 on the cutting carriage serves to supply the cutting carriage 15 with compressed air is firmly arranged. The power supply for the cutting carriage is provided via the fixed on the cutting bridge 42 mounted contact rails 18, from which the current is drawn via the sliding contacts 19.

To move the cutting carriage 15 along the slide rails 14, the cutting bridge 4 is on the one hand and the cutting carriage 15, on the other hand, is designed in accordance with DT-AS 21 44 947 as parts of a linear motor. As a result, moving parts for driving the cutting carriage are completely avoided, so that the Wear parts are reduced to a minimum. When the cutting carriage 15 has made the cut, drives he against the pneumatic buffer 22, which brakes it completely and deflects it in the opposite direction. By reversing the direction of the current in the winding of the linear motor, the cutting carriage 15 then moves into its Starting position back. There it drives against an electromagnet 23, which is attached to the piston rod of the pneumatic cylinder 24 is seated. This cylinder 24 then pulls the cutting carriage 15 into its end position, in which engage the two coupling halves 25, 26 of a quick-release coupling.

The coupling half 26 is connected to the compressed air line 27 connected, and the compressed air reservoir 17 is filled with compressed air after the clutch has engaged.

If the control pulse is given to carry out a cut, the cutting process runs as follows from: The compressed air cylinder 30 is actuated and brings the control rail 32 to the piston 31 Cutting carriage 15 in the working position in which it is through the latch lock 33, nose 33a, locking groove 33 £>, spring 33c is locked. By the control rail, the valve 35 is actuated via the switching cam 34, whereby the The compressed air is applied to the cutting cylinder 36 and the cutting tool 16 is lowered onto the glass ribbon will. The cutting pressure that the cutting tool exerts on the glass ribbon is controlled by a pressure regulator 37 kept constant.

When the cutting phase is finished, the cutting carriage drives over a switching curve 40, which the The pawl lock 33 opens and thus releases the control rail 32. This is inserted into your Returned to starting position. As a result, the valve 35 is actuated again, whereby the cutting cylinder 36 is raised. At the same time, the cutting carriage is deflected by the pneumatic buffer 22 and moves back to the starting position, where the compressed air reservoir 17 is refilled. The pressure gauge 42 indicates the pressure that prevails in the compressed air reservoir 17.

For this purpose 3 sheets of drawings

Claims (6)

Patent claims: 1. Device for cutting flat glass, with one along a rail or a template movable cutting carriage, which is deflectable onto the glass plate and into a raised position transportable cutting tool carries, the lowering and / or lifting of the cutting tool takes place via a cylinder actuated by compressed air, characterized in that that on the cutting carriage (15) a Drui.kluftspeicher (17) is arranged, which the cutting cylinder (36) for lowering and / or raising the cutting tool (16) supplied with compressed air. 2. Device according to claim 1, characterized in that that between the compressed air reservoir (17) and the cutting cylinder (36) a pressure regulator (37) is interposed. 3. Apparatus according to claim 1 and 2, characterized in that the compressed air reservoir (17) with one half (25) of a snap coupling is provided, which in the starting position of the Cutting carriage (15) in the stationary, with the compressed air line (27) connected to the other half (26) of the quick release coupling engages, filling the compressed air reservoir. 4. Apparatus according to claim 1 to 3, characterized in that for tightening the cutting carriage (15) into the starting position provided for filling up the compressed air reservoir (17) arranged pressure cylinder (24) is provided or with the cutting carriage | 15) via a Electromagnet (23) can be coupled. 5. Application of the device according to one or more of claims 1 to 4 in a Cutting device in which the cutting carriage (15) on the one hand and the slide rails (14) for the The cutting bridge (4) carrying the cutting carriage (15), on the other hand, has the two elements of a linear motor > tors are. 6. Application according to claim 5, characterized in that the power supply of the cutting carriage (15) takes place with the help of sliding contacts (19) via contact rails (18).