Patent Application
20130220093
The invention relates to a guide device for a blade having a slide for receiving the blade, a slide guide, and a slide element arranged between the slide guide and the slide.
DE 2 122 855 discloses a rectilinear movable upper blade slide provided in sheet shears for trimming metal sheets.
DE 1 502 980 describes flat-blade trimming shears with a driven upper blade beam displaceable along a stand during the entire work movement. An axle connects the upper blade beam with a slide displaceable over two wedge-shaped slide pieces. The slide pieces are connected with a device for adjusting the blade gap.
DE 1 502 870 discloses sheet shears for trimming metal sheets and having adjustable guide for a perpendicular displaceable upper blade carrier. The guides for the upper blade carrier are formed as intermediate slides movable up and down along guides inclined to the plane of the cut of the lower blade carrier and formed in the shear stand.
DE 23 32 898 discloses a flat blade shears for trimming rolled sheets in which the upper blade beams are displaceable over adjustable guides provided on the internal wall of the housing.
DE 1 777 014 describes shears for trimming or separating sheets and including a stationary lower blade and a driven upper blade that is secured against displacement in the longitudinal direction by a guide secured on the stand.
The drawback of the prior art shears consists in that a sliding friction takes place between the movable upper blade carriers and the guides that, together with the heating of the guide surfaces, results in soiling and wear. As the result, operational life of the guide components and the guides is reduced.
The object of the invention is to improve a known guide device for blade in a machine and/or installation such as, e.g., shears for sheets or metal strips, with regard to ease of maintenance and economy, so that the product quality is not reduced by the cutting process.
This object is achieved by features of claim 1. Those are particularly characterized in that a cooling device with a cooling medium for cooling the slide element is provided. With a separately arranged cooling device in the region between the slide and the slide guide, the guide surfaces of the displaceable components and the slide elements are cooled. Thereby, the progressive heating of sliding, relative to each other, components is prevented, which advantageously leads to reduction of wear and reduction of soiling as a result of wear. The cutting frequency of the blade and, thereby, the sliding speed and the surface pressure applied by the sliding element to the slide or the slide guide can all be increased. The output of the installation, i.e., shears, is also increased.
According to a first embodiment, a slide plate is arranged between the slide element and the slide guide and/or between the slide element and the slide, wherein the slide plate is formed with the cooling device. The advantage of this embodiment consists in that in the course of maintenance work, the sliding element or the sliding plate with the cooling device can be dismounted separately, independent from each other, and be repaired or replaced. A further advantage consists in that slide plates formed of different materials and with different cooling devices, which are adapted to respective uses, can be used.
According to the invention the cooling device can be arranged in the slide or the slide guide. The so arranged cooling device increases the cooling effect of the slide guidance and leads, thereby, to reduction of heating of the friction surfaces.
Further, according to the invention, the cooling device is arranged in the sliding element. The advantage of this consists in that the sliding element is subjected to direct cooling. With the slide element having a hollow space for the cooling device, the material mass is reduced and, thereby, the to-be-cooled volume of the sliding element. This accelerates the cooling effect.
Advantageously, the sliding element is self-lubricating. The advantage of this consists in that the combination of the self-lubricating sliding element with the cooling device further reduces wear of the friction surfaces and, thus, eliminates a certain share of soiling.
According to a further embodiment of the invention, the cooling device is formed as a closed cooling channel or as an open cooling channel with at least one inlet and one outlet for the cooling medium. The advantage of this consists in that dependent on manufacturing methods and the device-dependent requirements, a cost-effective solution for forming the cooling channels in the cooling device can be chosen.
It is further provided that as a cooling medium, solid, liquid, or gaseous cooling medium can be used. Dependent on the use of the installation, an economical cooling medium with the best cooling capacity can be selected.
According to the invention, it is contemplated to provide a cover for closing the open cooling channel.
Further advantages and particularities of the invention follow from the sub-claims and the following description in which embodiments of the invention which are shown in the drawings, are described in detail. Further, in addition to the above-described combination of features, separate features or in other combinations are also form an important part of the invention.
In the embodiment shown in
To this end, e.g., simple conduits in form of hoses, bores, attachment sleeves, plug or screw connection for the inlet and outlet 215, 216 can be provided.
It is possible to form the structural component from two mirror-symmetrical halves each provided with a one-sided milled cooling channel-half 209′, as shown in
All of the features, which are described above with reference to the drawings, can advantageously be combined or supplemented for forming the device.
| Number | Date | Country | Kind |
|---|---|---|---|
| 1020100340235 | Aug 2010 | DE | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP11/58092 | 5/19/2011 | WO | 00 | 5/13/2013 |
