DE4327615C2 - Cutting machine with a planetary movement of a circular knife - Google Patents

Description

The invention relates to a cutting machine planetary movement of a circular knife and with a fixed counter knife bar, such Cutting machines in various designs have become known

Characteristic of such cutting machines (also slicers called) is that a circular knife, which driven rotating is also rotating on the eccentric part driven eccentric is rotatably mounted, whereby by rotating the eccentric disc and simultaneously Rotary drive of the circular knife this a planet-shaped Performs circular motion and the cutting process in connection with a fixed counter knife (counter knife bar) carries out.

Such high-speed cutting devices are used Cutting products in the food industry used, and it has been shown that when cutting hard and frozen products an undesirable effect occurs. The circular knife ground on one side is namely when cutting these products towards the fixed Counter knife steered. After a game between the Counter knife bar and the circular knife of about 2/10 mm is present, this undesirable effect leads to the fact that Circular knife with the counter knife when cutting these products can collide.

This will damage the circular knife on the counter knife bar and usually has to be replaced.  

DE 92 05 is the closest prior art 721 U1 a cutting machine for cutting Food products with planetary movement of the Circular knife with a fixed counter knife works together, known. A special one, the collision with the fixed counter knife excluding leadership of Circular knife, but is not provided.

The invention is therefore based on the object High-speed cutting device of the aforementioned Kind in such a way that even when cutting hard or frozen products a collision of the circular knife with the Counter knife bar is excluded.

To achieve the object, the invention is by characterized technical teaching of claim 1.

An essential feature of the invention is that in the feed direction before the immersion point of the circular knife on the counter knife Circular knife guide fixed to the housing (but adjustable) on the housing is arranged, the circular knife guide essentially is designed as a vertical guide part, which has an upper Inclined surface, past the circular knife runs past and parallel to this circular knife guide in Direction on the counter knife bar.

The purpose of the circular knife guidance is that - if that Circular knife for hard and frozen products in undesirably directed to the counter knife that this Evasive movement is picked up by the circular knife guide, d. H. the circular knife then strikes the first Circular knife guide without being damaged, and then along the circular knife guide towards Counter knife bar to be steered, causing a collision with the counter knife  bar is excluded because the circular knife guide directs the circular knife onto the counter knife bar that the counter knife bar is always behind the wheel surface of the circular knife guide lies. So that becomes a Damage to the circular knife is definitely avoided.

In a preferred embodiment of the invention it provided that the circular knife guide adjustable is attached to the counter knife bar itself. This also adjusts the circular knife guide, if the counter knife bar in relation to the circular knife is set. This therefore requires a ge less adjustment effort for the circular knife guide.

In another embodiment, however, it can be featured can be seen that the circular knife guide separated from the counter knife bar adjustable on the housing hold is.

The circular knife guide consists essentially of a vertical deflector bar that has an upper slant has area that only serves to ensure that if the circular knife is set incorrectly, do not use it the upper edge of the circular knife guide collides. One then notices an incorrect setting of the circle knife, in which this is already on this Bevel comes up and knows that a cutting process cannot be done.

As a rule, the circular knife has a play of approximately 2/10 mm to the control surface of the circular knife guide on. Only if hard or frozen objects can be cut, this game in undesirable Way are reduced, which then makes the circular knife runs onto this control surface, but not here  is damaged because this control surface is parallel to the Cutting edge of the circular knife lies so that this Circular knife then controlled to the counter knife bar is performed without colliding with the counter knife bar dieren.

In the following, the invention is based on only one Execution path illustrating drawings explained in more detail.

Show it:

Fig. 1 schematically shows a front view of a cutting device,

Fig. 2 is a side view of the device of FIG. 1 in the direction of arrow II.

In Fig. 1, a rotatably driven eccentric 1 is shown, which is rotatably driven in an eccentric bearing 24 fixed to the housing.

On the eccentric disc 1 , a knife bearing 4 for a rotating driven circular knife 2 is arranged in a conventional manner.

The circular knife thus runs on a cutting circle 3 and takes on various positions, a specific position of the circular knife being designated 2 '. There is a movement in the direction of rotation 19 .

A counter knife bar 8 is arranged on the housing, along which the circular knife 2 is guided with play, the lowest position of the circular knife 2 (at line 18 ) being shown in FIG. 1.

The product is fed in the feed direction 20 and there is a product passage height 6 , the product being able to rest on the upper edge 9 of the counter knife bar 8 and being delimited by the product upper edge 21 below a housing edge 5 .

According to the invention, a circular knife guide 7 is now arranged, which should ensure a controlled feeding of the circular knife 2 to the counter knife bar.

Referring to FIG. 2, the blade 2 is first formed with respect to the circular knife guide 7 a run-in bevel 10 on the one hand (tangen tial to an inclined surface 12) by an oblique straight line 11 is determined by the circular blade guide 7 and on the other by the vertical.

In the area of the inclined surface 12 , guidance of the circular knife on the circular knife guide 7 is not yet intended. There is therefore a game 17 .

In normal case, the blade 2 also in front of the control surface 23 of the circular blade guide 7 a one stellbares game of z. B. 2/10 mm.

If hard or deep-frozen or frozen products are now cut, it can happen that the circular knife 2 performs an evasive movement 22 in the direction of the counter knife bar 8 and the circular knife guide 7 .

According to the invention it is now provided that this soft movement 22 is received by the control surface 23 , that is, the circular knife 2 runs on this control surface 23 controlled along, vertically downward and no longer collides with the knife guide 7 arranged below the circular guide bar 8 because of the latter The leading edge is either flush with the control surface 23 of the circular knife guide 7 or the front edge is even slightly offset behind the control surface.

In Fig. 2 it is shown that the circular knife guide 7 can be set together with the counter knife bar 8 , the two parts being mounted on a support bracket 15 .

The circular knife guide 7 is connected with screws 16 to the counter knife bar 8 and has in its upper part an adjusting screw 13 which engages at its other end in an associated threaded hole in a base plate 14 .

The game 17 can thus be adjusted to the circular knife 2 by turning the adjusting screw.

In this case, the adjustable holders of the counter-knife bar 8 on the housing (for example on the base plate 14 ) are released in order to actuate the adjusting screw 13 and then tighten these holders again. Overall, the arrangement of the circular knife guide 7 according to the invention has the essential advantage that a controlled feeding of the circular knife to the counter knife bar 8 takes place without the risk of a collision being feared.

The circular knife guide consists of a V2A steel. It is important, moreover, that the inclined surface 12 of the circular blade guide 7 ridge above the product top is 21, so that the said yielding movement then 22 of the circular blade only take place at all, when the circular blade lower edge (line 18) is located below the product top edge 21, that is, when the Circular knife has already entered the product.

The inclined surface 12 therefore only serves to identify incorrect settings of the circular knife in relation to the counter knife bar 8 .

Reference list

1 eccentric disc
2 circular knives 2 ′
3 cutting circle
4 knife storage
5 housing edge
6 Product headroom
7 circular knife guide
8 counter knife bar
9 top edge
10 run-in slopes
11 straight
12 sloping surface
13 adjusting screw
14 base plate
15 support bracket
16 screw
17 game
18 line
19 direction of rotation
20 feed direction
21 product top edge
22 Evasive movement
23 control surface
24 eccentric bearings.

Claims (4)

1. Cutting machine with a planetary movement of a circular knife ( 2 ) and with a fixed counter knife bar ( 8 ), characterized in that for the controlled feeding of the circular knife ( 2 ) to the counter knife bar ( 8 ) a circular knife guide ( 7 ) with an inclined inlet surface ( 12 ) and a control surface ( 23 ) is present, on each of which with play ( 17 ) on the housing side the counter knife bar ( 8 ) and on the outer side of which the circular knife ( 2 ) is located. 2. Cutting machine according to claim 1, characterized in that the game ( 17 ) to both the counter knife bar ( 8 ) and the circular knife ( 2 ) is adjustable. 3. Cutting machine according to claim 1 or 2, characterized in that the circular knife guide ( 7 ) is fixed adjustable on the counter knife bar ( 8 ). 4. Cutting machine according to 1 or 2, characterized in that the circular knife guide ( 7 ) is adjustably attached to the housing.