EP2639021A1 - Blade unit for oscillating cutter, oscillating cutter and process for glass removal of window and door sashes - Google Patents

Abstract

The oscillating cutter blade unit has two rigidly interconnected blades arranged parallel to one another at a distance from one another. The distance lies between the ranges of 0.5-2 m. The blades are made separately and welded adjacent to a receiving opening for attachment to drive shaft of drive unit. An independent claim is included for method for removing glass from window or door casement glazed with insulating glass.

Description

Technical area

The invention relates to a swing cutter blade unit for attachment to an electric or pneumatic vibratory cutter and a corresponding vibratory cutter. It further relates to a method for Ausglasen an insulating glazed window or door leaf.

State of the art

When glazing window or door sashes with insulating glazing, for example to replace broken glazing or poor gluing in the frame, the glazing must be removed from the frame. For this purpose, the adhesive layer surrounding the circumference of the insulating glazing is to be severed. For this one usually uses an electric jigsaw, but occasionally also simple hand tools. Both approaches often lead to damage to the frame, which of course you want to avoid. Moreover, in this procedure (especially when working with a saw to a considerable extent) contamination of the workpiece and workplace, the removal of which is difficult and requires considerable time.

It is also known to sever the adhesive layer along the periphery of the glazing with a simple knife or with an electrically or pneumatically operated vibrating cutter. However, after cutting the cut surfaces adhere to each other again, which makes the removal of the glazing considerably more difficult.

Presentation of the invention

The invention is therefore based on the object of providing an improved tool and improved method for Ausglasen of insulating glazed window or door wings, so that this work on the one hand is easy on the other hand, and damage to the frame can be largely avoided.

This object is achieved in its device aspect by a swing cutter blade unit (also referred to as "Ausglasmesser") with the features of claim 1. This results in conjunction with an electric or pneumatic drive a novel swing cutter. In its method aspect, the object is achieved by a method having the features of claim 7. Advantageous developments of the inventive concept are the subject of the dependent claims.

The invention is based on the consideration that when severing an elastic adhesive layer with a knife therefore complicate handling of the out of the frame to be taken insulating is to complain, because no material is dissolved out of the adhesive layer and therefore the cut edges are tightly and elastically pressed together , According to the inventor's considerations, it would therefore be desirable to achieve a material discharge from the adhesive layer even when using a knife or (as a further step) to make it easy. Furthermore, the invention includes the consideration that such a material discharge in the form of a resulting between two cutting blades separate adhesive strip can be realized, which can be relatively easily removed "in the piece" after the cut.

Compared to the pollution-intensive sawing techniques, significant increases in quality and productivity can be achieved because the material discharge from the adhesive layer does not take place in the form of countless small particles but in the form of a substantially continuous strip. This causes virtually no contamination of the workpiece and workplace, so that consuming cleaning can be omitted.

With regard to the usual widths (thicknesses) of the adhesive layer on the circumference of the insulating glazing in an insulating glazed window or door, the distance between the two blades of the proposed blade unit in the range between 0.5 mm or 2 mm, in particular in the range between 1 mm and 1 , 5 mm. It will be appreciated that for other applications where wider adhesive layers are to be cut, a greater blade spacing may also be considered.

In a further embodiment of the invention it is provided that the blades are manufactured individually and are welded, brazed or riveted together near a receiving opening for attachment to a drive shaft of a drive unit. In order to advantageously enable the use of commercially available blade units for vibratory cutters, in a further embodiment one of the blades is doubled onto a prefabricated blade unit comprising a single blade. In principle, however, the blade unit can also be manufactured from one piece or be assembled from individual parts in a manner other than that mentioned.

In a further embodiment it is provided that the blades have the same shape, in particular tapering towards its free end and are rounded there. Depending on the specific application - which is of course not limited to the application described here superficially, the blades can also have a different shape, in particular a hook-like curved shape, trapezoidal shape or the like.

Description of the drawings

Fig. 1

eine perspektivische Darstellung einer Ausführungsform des erfindungsgemäßen Schwingschneiders und

Fig. 2A und 2B

skizzenartige Darstellungen von Ausführungsformen der erfindungsgemäßen Schwingschneider-Klingeneinheit.

Advantages and expediency of the invention will become apparent from the following description of a preferred embodiment with reference to the figures. From these show:

Fig. 1

a perspective view of an embodiment of the vibrating cutter according to the invention and

FIGS. 2A and 2B

sketch-like representations of embodiments of the vibrating cutter blade unit according to the invention.

Fig. 1 shows a compressed air-driven, hand-held vibratory cutter 1, at the device head 1a, a drive shaft 1 b protrudes from the housing. Attached thereto is a swing cutter blade unit 3 comprising two cutting blades 3a and 3b parallel to each other at a small distance from each other on a cranked blade holder 3c.

FIGS. 2A and 2B show, as exemplary embodiments, a blade unit 3 'with blades 3a', 3b 'tapering towards its free end with rectilinear boundary edges or a blade unit 3 "with hook-like blades 3a", 3b " Blades are identical, but in other designs the shape and / or the cut of the two blades may differ.

Claims (7)

Swing cutter blade unit for attachment to an electric or pneumatic vibratory cutter, with two mutually parallel with a distance, firmly connected blades. Oscillating-blade unit according to claim 1, wherein the distance in the range between 0.5 mm or 2 mm, in particular in the range between 1 mm and 1.5 mm The vibratory cutter blade unit according to claim 1 or 2, wherein the blades are individually manufactured and welded together, hard-soldered or riveted near a receiving opening for attachment to a drive shaft of a drive unit. A vibratory cutter blade unit according to any one of the preceding claims, wherein one of the blades is doubled up onto a prefabricated blade unit comprising a single blade. The vibratory cutter blade unit according to one of the preceding claims, wherein the blades have the same shape, in particular tapering towards its free end and are rounded there. Oscillating cutter with electric or pneumatic drive and a swing cutter blade unit according to one of the preceding claims. A process for Ausglasen an insulating glazed window or door leaf, in which at least partially an adhesive layer is provided between a profile frame and the periphery of the glazing, wherein using an oscillating cutter according to claim 1, the adhesive layer along the circumference of the glazing severed by the two blades of the Swing cutter cut middle part of the adhesive layer, in particular at one end, detected and pulled out and then the glazing is removed from the profile frame.

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