WO2013135712A1

WO2013135712A1 - Oscillating cutter blade unit, oscillating cutter and method for removing the glass from a window or door casement

Info

Publication number: WO2013135712A1
Application number: PCT/EP2013/055019
Authority: WO
Inventors: Andreas DIRKSEN
Original assignee: Sika Technology Ag
Priority date: 2012-03-13
Filing date: 2013-03-12
Publication date: 2013-09-19
Also published as: EP2639021A1

Abstract

The invention relates to an oscillating cutter blade unit for attachment to an electric or pneumatic oscillating cutter, having two rigidly interconnected blades arranged parallel to one another at a distance from one another. The invention also relates to a method for removing the glass from a window or door casement glazed with insulating glass, in which an adhesive layer is provided, at least in regions, between a profile frame and the periphery of the insulating glazing, wherein, with use of an oscillating cutter, the adhesive layer is separated along the periphery of the insulating glazing, the central part of the adhesive layer cut out by the two blades of the oscillating cutter is grasped, in particular at one end, and extracted, and the insulating glazing is then removed from the profile frame.

Description

Swing cutter blade unit, vibratory cutter and method for outgassing a window or door leaf Description

Technical area

The invention relates to a swing cutter blade unit for attachment to an electric or pneumatic vibratory cutter and a

corresponding swing cutter. It further relates to a method for Ausglasen an insulating glazed window or door leaf.

State of the art

In the glazing of window or door wings with insulating glazing,

for example, to replace a broken glazing or a

Insufficient gluing in the frame, the insulating glazing must be made of the

Frame removed. For this purpose, the adhesive layer surrounding the circumference of the insulating glazing is to be severed. For this purpose, one uses

usually 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, stick to the

Cut the cut surfaces together again, which makes the removal of the glazing considerably more difficult. Presentation of the invention

The object of the invention, therefore, is to provide an improved tool and method for vitrifying insulated glazed window or door leaves so that on the one hand this work is easy and on the other hand damage to the frame is largely avoided can .

This object is in their Vorrichtu ngsaspekt by a swing cutter blade unit (especially to be referred to as "Ausglasmesser") with the

Characteristics of claim 1 solved. This, in combination with an electric or pneumatic drive, results in a new type of vibratory cutter. In its method aspect, the object is achieved by a method having the features of claim 8. Expedient developments of the inventive concept are the subject of the dependent claims.

The invention is based on the idea that when severing an elastic adhesive layer with a knife, it becomes difficult

Handling the to be taken out of the frame Isolierverglasung is to complain, because from the adhesive layer no material is dissolved out and therefore the cut edges tightly and elastically pressed together against each other. According to the inventor's considerations, it would therefore be desirable, even when using a knife, to achieve a material discharge from the adhesive layer or (as a further step) to make it easy to do so. Furthermore, part of the invention is the consideration that such a material discharge can be realized in the form of a separate adhesive strip formed between two cutting blades, which can be removed relatively easily "in the piece" after the cut.

Compared to the pollution-intensive sawing techniques, it is possible to achieve considerable increases in quality and productivity because the material discharge from the adhesive layer does not take place in the form of numerous small particles but in the form of a substantially contiguous strip. This causes virtually no contamination of the workpiece and the workplace, so that consuming cleaning tasks can be eliminated. 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 is understood that for other applications where wider adhesive layers are to be cut, a larger

Blade spacing comes into consideration.

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 use commercially available

In one further embodiment, one of the blades on a prefabricated blade unit comprising a single blade is doubled up. 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, the blade unit is constructed such that the distance of the blades is variable, such as by means of a threaded screw.

This z. Example, the one blade fixed to a main body of the blade unit and the other be connected to the threaded screw, and the main body of the blade unit has a threaded bore into which the threaded screw fits. It is understood that even with this adjustable design, both blades are fixed in use, d. H. suitable locking means are provided.

In a further embodiment it is provided that the blades have the same shape, in particular tapering towards its free end and there

are rounded. Depending on the specific application - which is of course not limited to the application described here above, the blades can also have a different shape, in particular a hook-like curved shape,

Trapezoidal shape or similar Description of the drawings

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 is a perspective view of an embodiment of the vibrating cutter according to the invention, and FIGS. 2A and 2B are sketch illustrations of embodiments of the invention

swing tailor blade unit according to the invention.

Fig. 1 shows a compressed-air-operated, hand-held vibratory cutter 1, on whose device head la a drive shaft 1b projects out of 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.

Fig. 2A and 2B show as embodiments a blade unit 3 'with its free end towards the rectilinear boundary edges tapered

Blades 3a ', 3b' and a blade unit 3 "with hook-like blades 3a", 3b "In these embodiments, the shape and the cut of both blades are identical, in other embodiments, the shape and / or the cut of the two blades but also differ.

Claims

claims

Oscillator blade unit (3, 3 ', 3 ") for attachment to an electric or pneumatic vibratory cutter (1), with two blades (3a, 3b; 3a', 3b '; 3a") arranged parallel to each other at a distance, 3b ").

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

A vibratory cutter blade unit according to claim 1 or 2, wherein the blades (3a, 3b; 3a ', 3b'; 3a ", 3b") are manufactured individually and close to a receiving opening for attachment to a drive shaft (1b) of a

Drive unit firmly connected to each other, in particular welded together, hard-soldered or riveted.

Oscillating blade unit according to one of the preceding

Claims wherein one of the blades (3a, 3b; 3a ', 3b'; 3a ", 3b") is mounted on a prefabricated blade unit comprising a single blade,

is doubled.

Oscillating blade unit according to one of the preceding

Claims, wherein the blades (3a, 3b, 3a ', 3b', 3a ", 3b") have the same shape, in particular tapering towards its free end and are rounded there.

A vibratory cutter blade unit according to any one of claims 1, 2, 4 or 5, wherein the blades (3a, 3b; 3a ', 3b'; 3a ", 3b") are connected to each other at an adjustable distance but rigidly in use.

Oscillating cutter (1) with electric or pneumatic drive and a swing cutter blade unit (3, 3 ', 3 ") according to one of the preceding claims.

8. A method for Ausglasen an insulating glazed window or door leaf, in which between a profile frame and the scope of

Insulating glazing at least partially an adhesive layer is provided, wherein using an oscillating cutter (1) according to claim 1, the adhesive layer along the circumference of the insulating glass cuts through the two blades (3a, 3b, 3a ', 3b', 3a ", 3b") the central part of the adhesive layer cut out of the vibrating cutter, in particular at one end, is grasped and pulled out, and thereafter the insulating glazing is removed from the profiled frame.