DE1869849U - DEVICE FOR CUTTING FITING TAPE SLITS IN WINDOW, DOOR LEGS OD. DGL. - Google Patents

Description

■ / Df .Nl * / Br, -17. JuXi 1962

"Device for cutting fit tape slots in window, door legs or the like .. »

The innovation relates to a device consisting of Knife holder and knife, for cutting fit "tied it up in window, door legs or the like ..

Devices for cutting pitches are generally scanned. You can using a pressure lever with a circular saw blade or by one of Motor-driven knife holder with knife trained be. The known devices of this type require a constructive ■ effort and still show some Defects on * This is due in particular to the fact that the pressure lever is steep in mediation of auxiliary Has an influence on the circular saw blade With this type of device the circular saw blade is far less than half its diameter into the one to be machined Part to be countersunk »Devices have now been constructed in which a saw blade is used finds, which can be introduced into the wood in its entire diameter. The slits are cut in this case, however, by a pendulum movement of the saw blade, which makes the operation relatively tedious.

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In any type of device where a knife holder and knife are used, the knife known per se is provided with two elongated holding bores. The knife holder with the attached knife is driven by a separate motor with the interposition of a crank disk Knives have the disadvantage that the elongated holding bores in the knife and their length can be shifted on the holding bolts or screws. A good and precise guidance is not given with this type of knives the two retaining screws. disassembly of the blade on the knife holder are eater holder removed entirely from the ^Äi. Only then it is possible that taking out better towards the end face or use another. This requires an additional expenditure of labor.

The subject of the innovation has now set itself the task of to improve these aforementioned disadvantages or to eliminate them entirely. To this end, the innovation is through characterized in that the knife holder has a rectangular recess which is held by a screw enλ by Ilaxi te Counterplate is covered, has, in which the shaft of the knife adapted to the recess with incorporated The guide slot can be pushed in at the front.

Furthermore, the object according to the innovation stands out in shape

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of the knife holder in that the incorporated Have recesses running parallel to the side surfaces, which guide the knife and contact the counter-plate. The counter plate guided in the knife holder is done by a screw or the like. locked. The shank of the knife corresponds to the dimensions of the Recess in the knife holder and has a slot-like in the middle Groove in such a way that the knife can be pushed into the knife holder at the end and laterally through the cover plate is held.

The object of the innovation is further characterized by the fact that on the side and on the one running in the working direction Side of the knife incisors are arranged, the same extending at a cutting angle of 30 to 60 ° in the working direction and the angle of the front teeth to the teeth on the side running in the working direction is about 90 °.

An embodiment of the subject of the innovation is shown in the drawing, it shows:

Pig. 1 side view of a knife in a well-known design,

Fig. 2 side view of an embodiment of the innovation according to the invention Knife,

Fig. 3 section of the knife holder according to the innovation in plan view,

Fig. 4 is a side view of the knife according to the innovation and knife holder in the assembled state according to Figs. 2 and 3,

5 shows a section along line V-V in FIG. 4, FIG. 6 shows a plan view according to FIG. 4.

On the construction of the well-known knife according to Fig. 1 should not be discussed in more detail.

According to FIG. 2, the shank i ′ of the knife 1 has a slot-like groove I ¹¹ . The knife 1 has tendon teeth 1 '''on the face and on the side running in the working direction (see arrow). The cutting edges of the teeth 1 '''run at a cutting angle of about 30 "to 60. The angle of the front teeth 1 ·''to the side facing in the working direction.! Lying teeth 1» »' is about 90 ° 3 and 5 the knife holder is denoted by 2. At its front end it has two recesses 2 ^f , 2 '. These recesses 2 ^f , 2' have parallel side surfaces. The recess 2 'is used for receiving and guiding of the knife 1 and also has a threaded hole 2 ^fl! for receiving the retaining screw 4. The counter plate 3 is placed in the recess 2 ″. 4) Here, the shaft l ^{ri of} the knife 1 corresponds to the dimensions

(3-hole recess 2 'in the holder 2. The knife i is pushed into the front of the holder 2. The groove i ¹ ' left free in the shaft I ^{1 of} the knife 1 is designed so that the retaining screw 4 can reach through.

If the knife 1 arranged in the holder 2 is to be removed or replaced, the retaining screw 4 solved. This will reduce the pressure on the plate 3, which in turn decreases in its pressure on the knife 1. The knife 1 can now easily be removed from the recess Pull out 2 · of the knife holder 2.

The advantage of the innovation is that the knife once is flawlessly held and on the other hand, the same sehneil can be installed and removed without much effort leaves. Furthermore, see the operation of the knife the particular advantage that the cutting edges of the teeth run at a cutting angle of about 30 to 60 and the angle of the frontal teeth to the in Working direction running side teeth about 90 °.

Claims (6)

P.A. ^ 70 497 * 7/19/62 Protection claims i ») Device, consisting of knife holder and knife, for cutting Fitschbandschlitzen in window, door legs or the like ·, characterized in that the knife holder (2) has a rectangular recess (2 ¹ , 2 ^lf ) through a is covered by retaining screws (4) held counter plate (3), into which the recess (2 ^f ) adapted shank (I ¹ ) of the knife (i) with an incorporated slot (l ^t! ) can be inserted at the front. 2.) Knife holder according to claim!, Characterized ge I mark net that the incorporated recess (2 ', 2 ^1t ) cause parallel side surfaces that guide the knife (1) and contact the G-egen plate (3), having. 3.) Knife holder according to claims 1 and 2, dadur ch geke η η ζ eich η et that the counter plate (3) held in the knife holder (2) by a retaining screw {k) or the like. is lockable. 4.) Knife according to claim 1, characterized in that the shaft (l ^! ) Of the knife (i) the dimensions of the recess (2 ^f ) in the knife holder (2) and has a seat-like groove (l ^{! l} ) in the middle, such that the knife (l) is slanted into the knife holder (2) at the end and through the cover plate (3) at the side. 5.) Knife according to claims 1 and 4, d a d u r c h characterized ,, that the knife (i) on the end face and on the side running in the working direction Has incisors (1 · '·), 6.) Knife according to claims 1, 4 and 5, characterized in that the cutting edges of the teeth (l ^{lt (} ) extend at a cutting angle of about 30 Ms 60 and the angle of the front teeth (l ^{f! T} ) to the the side running in the working direction ο ^{to (3} ~ lying teeth (l ^tlf ) about 90 / carries.