DE3403218C2 - Process for cutting food into strips or cubes and cutting machine therefor - Google Patents

Description

The invention relates to a method for cutting Food in strips or cubes, with a Magazine stamp in a box-shaped magazine Cutting material in cycles by one on the opposite End arranged gate knife presses, and being a rotating cutting knife in front of the gate knife the longitudinally pressed by the gate knife cut material to be cut during a stop cycle of the Ma cut the magazine stamp transversely to the feed direction,  after a magazine filling the magazine stamp before Activation of the cutting knife in the direction of the gate shifted the knife, pre-compacted the material to be cut and only after it has been pressed against a counterholder and Reaching a preselected back pressure separating knife is activated while the magazine stamp performs the first stop cycle.

A method of this type and a cutting machine for this is e.g. B. described in DE-AS 17 79 153. With such a machine, meat in cubes, Slices, platelets or strips are cut. Lungs, fish, chicken, Ge treat vegetables and the like. The good to be cut falls down from a prefilling room the magazine. After closing the magazine a cover plate is made - if necessary after a lateral, large-area pre-pressing by a ver seal stamp - cutting the good. For this serves a magazine stamp that in the longitudinal direction of the Magazines clockwise towards one on the opposite gate knife arranged at the end and thus the material to be cut by the gat term knife presses. The gate knife also exists two rows of each arranged in a row knives parallel to each other, being a row  is perpendicular to the other row. This results in seen - in cross section - a variety of small rectangles, which makes the goods in strips lengthways cut by the gate knife is pressed. In front the gate knife has a rotating separator knife, which then cuts the material to be cut in the desired Cut the length across the feed direction.

Such a cutting machine is used in batches worked. Once the magazine stamp in its front has arrived in the first position, he will be back in pushed back its starting position, after which the magazine by moving the cover plate accordingly reopened to accommodate new material to be cut becomes. Then starts again after ver close the magazine the magazine stamp with the next intermittent feed, each time with a Stop cycle from the rotating cutting knife that of the material to be cut.

A disadvantage of such a method and egg ner such cutting machine is, however, that not for the first cut after filling the magazine results in the desired length of the material to be cut. With Be namely the start of the feed of the magazine stamp Gate knife and cutting knife in operation at the same time  set and that emerging from the gate knives Cuttings are cut accordingly. However, since the position of the cutting knife is not fixed at the beginning and at the same time the magazine stamp the new one Magazine filling will compress somewhat, begins in space mean cutting off the material to be cut too early. This means that there is practically a waste.

From DE-OS 32 26 790 are a method and Known device for cutting food. Here, for exact positioning and pre-ver seal on a preselected back pressure the gate knives pushed through the material to be cut Stop plate pressed. This stop plate must each time before activating the cutting knife and thus before disconnection outside the projection cross-section tes of the outlet opening are pivoted. For a he must have a new cutting process with precise precompaction they are pivoted back in front of the outlet opening.

The disadvantage of this method is that for the seen purpose, namely largely defined Ab cutting lengths and clean cut edges for cutting well, a considerable effort due to the additional an striking plate and its control is required.

The present invention therefore has the object establish a method of cutting food to create in strips or cubes, in which after a magazine filling for the first bar a largely defined cut-off length from the Gate knife cut good can be achieved. It is also an object of the present invention to to create suitable cutting machine.

According to the invention this object is achieved in that the rotation of the cutting knife is controlled so that it after the feed of the magazine stamp has ended comes to a standstill before the magazine opens and so that at the same time it forms the counterhold.

By the method according to the invention, no special accessories or additional parts required, because the cutting knife practically fulfills a double function. On the one hand, the separating knife is used in the usual way Cut off the by the gate knife penetrated strip-shaped material to be cut others it acts through its Posi invention tioning in front of the outlet opening of the magazine as Ge holder.

Practical is only a sensor, sensor or the  same required of the desired back pressure measures. Other internals are - apart from one appropriate control of the cutting knife and the Ma magazine stamp - not required.

A cutting machine according to the invention for implementation of the procedure with a box-shaped magazine for the material to be cut, in which a clockwise ver sliding magazine stamp against the material to be cut Gate knife presses that on the opposite open one End of the magazine is arranged, in front of the Gat a knife driven by a drive motor Cutting knife with an at least approximately paraxial Rota to the longitudinal direction of the magazine tion axis for cutting off by the gate knife longitudinally cut material is arranged, be is that the drive motor is a brake motor and that the cutting knife as a counterhold for the Cut material is formed, which is at a standstill before Magazine filling lies.

By designing the drive motor as a brake motor can the cutting knife after completion of the advance brake the magazine stamp exactly so that it is in front the magazine opening comes to a standstill. Now becomes a Another cutting process by advancing the Ma  magazine stamp carried out, so the cutting knife works first as a counterhold, which is the desired Ab allows you to set the cutting length precisely.

In an embodiment of the invention, that the cutting knife has a size and shape that it at least roughly most of the cross cut surface of the magazine covered.

In general, such cutting knives are already re executed relatively large area, so that now only it must be ensured that its size and shape in the desired dimensions is to be selected.

It is advantageous if the cutting knife on his with a side facing away from the gate knife Support bracket is provided, which is fixed to one supports the standing part of the cutting machine. Since that Cutting knife only attached to one side of the drive shaft is done and by the feed of the magazine stamp exposed to a certain pressure, it will generally my be appropriate for an appropriate support bracket to worry. The support bracket we at least approximately the drive shaft of the cutting knife opposite, which achieves the best efficiency becomes. The support bracket can be used in different ways  be trained. So z. B. simple bearing points, Blocks or the like possible.

In an advantageous manner, however, one becomes the support holder tion with a roller that can be pressed onto the cutting knife provided, where necessary, the position of the role can be chosen so that during the rotation of the Cutting knife does not rest on this. Due to the one-sided attachment of the cutting knife will this is at a standstill during pressing bend the material to be cut. It can then the deflection defined by the roller is absorbed become.

If this is the role in a rotation of the separating knife sers can run without problems, can be provided that the extension of the axis of rotation of the role by the The axis of rotation of the cutting knife runs. In this case the roll can run exactly on the cutting knife.

Another way to solve the posed Task with a somewhat simpler procedure or there is also a simpler cutting machine for this in that the rotation of the cutting knife is controlled will that after the feed of the Maga interest stamp before opening the magazine to breastfeed  brought and thus also the opposite holder is formed.

In this case, the cutting knife with a brake motor braked so precisely that the magazine opening remains as free as possible. Then the cutting machine is in controlled the specified way, in particular that Cutting knife activated accordingly delayed, so also waste at the start of a new cutting process avoided. It can also be sized Set the right cutting length of the material to be cut len. This control is not quite as precise as the one described above, but for many purposes it may be sufficient. It is here practically only required that the magazine stamp after magazine filling in the direction of the Gate knife is advanced simultaneously or be activated with a short delay, the Magazine stamp a compression of the inserted Cuts. Is about corresponding Ab button or sensor a previously set pressure can be reached using the appropriate control contacts then a time delay circuit Cutters are activated, provided to be may that during the magazine stamp the first Stop cycle only after an adjustable  Delay time the cutting knife is activated.

Below is an execution based on the drawing example of the invention described in principle.

Show it:

Fig. 1 is a front view of the cutting machine according to the invention;

Fig. 2: a section along the line II-II of Fig. 1;

FIG. 3 shows a section along the line III-III of Fig. 2.

On a housing wall 1 , a magazine 2 is arranged, one vertical side wall 3 of which is fixed, while the other lateral longitudinal wall is formed by a compression ram 4 . The compression wall 5 of the compression ram 4 forms the second vertical side wall for the magazine 2 .

A pre-filling space 7 is located above the magazine 2 . Since Lich next to the magazine 2 , a machine cover 8 is arranged. The compression stamp 4 is further provided with a horizontal cover plate 9 , which wall 3 extends in the direction of the opposite sides of the magazine 2 . The width of the cover plate 9 is chosen so that in the closed to stand, ie in the front position of the compression stamp 4 , the filling opening 10 between the pre-filling space 7 and the magazine 2 is completely covered by the cover plate 9 .

The horizontal displacement movement of the compression stamp 4 is effected in a known manner by a toggle system 11 . For this purpose, the compression ram 4 can be pivoted about a horizontal axis and is fastened to a joint 12 on each side.

On the back of the magazine 2 is a magazine stamp 13 which is displaceable in the longitudinal direction of the magazine and which presses the material to be cut in the magazine 2 in the direction of the gate knives 14 and 15 arranged on the front side. Structure and operation of such gate knives are generally known, which is why they are not described in more detail below. The material to be cut is cut into strips by the reciprocating gate knives, whereby it is pushed out of the magazine 2 by the magazine stamp 13 .

A separating knife 6 is now arranged in front of the gate knives 14 and 15 , by means of which the material to be cut emerging from the magazine is cut to the desired length transversely to the feed direction. For this purpose, the cutting knife 6 is fastened on a drive shaft 16 . On the drive shaft 16 opposite side of the cutting knife 6 , a support bracket 17 is arranged. The support bracket 17 has a roller or roller 18 which is rotatably seated on an axis 19 . The axis 19 in turn is fastened in a holder 20 which is supported on a fixed part of the machine housing 1 .

Below is how the cutting machine works explained in more detail.  

In Figs. 1 and 2 the position is shown before the beginning of a new cutting process. Fig. 3 shows the open position of the magazine for filling. In this position, the filling opening 10 is free and the material to be cut falls down into the magazine 2 . Subsequently, the sealing stamp 4 is moved in the direction of the side wall 3 of the magazine, the cover plate 9 simultaneously closing the filling opening 10 . At the same time, the material to be cut is pre-pressed. When the sealing piston 4 has reached its end position and thus this compression wall 5 forms the lateral longitudinal wall of the magazine 2 , while at the same time the cover plate 9 closes the magazine upwards, the magazine stamp begins its advance. In the magazine 2 there is still a remainder 21 of the material to be cut from the previous cutting process, which, however, is for the most part already in the gate knives 14 and 15 . The new filling 22 is compressed by the magazine stamp 13 and the remaining goods 21 are pushed further through the gate knives 14 and 15 until it comes to the separating knife 6 to the system. Due to the further advance of the magazine stamp 13 , the material to be cut is pressed against the separating knife 6 , as a result of which a counterpressure is established on the magazine stamp. Only after a certain counter pressure has been reached is a brake motor 23 activated, as a result of which the separating knife 6 begins to rotate and thus separates the cutting well. For this purpose, the piston of the magazine stamp 13 is controlled so that it engages its first stop cycle. The gate knives 14 and 15 may have been previously activated. While pressing the cutting good on the cutting knife 6 , the roller 18 forms a support bearing.

When the piston of the magazine plunger 13 has reached its foremost position and the cutting process has ended, the gate knives 14 and 15 and also the rotating cutting knife 6 are stopped. Since a brake motor is used as the drive motor, the standstill of the cutting knife 6 can be controlled so that it comes to a stop just in front of the magazine opening.

Brake motors 23 are generally known, which is why they will not be dealt with in any more detail here. In general, drive motors will be used for this purpose, which have electrically operated magnetic disc brakes or are equipped with countercurrent brakes.

Claims (10)

1. A method for cutting food in a strip or cube shape, a magazine stamp in a box-shaped magazine pushing the material to be sliced through a gate knife arranged at the opposite end, and wherein a rotating separating knife lying in front of the gate knife is pressed by the gate knife and longitudinally cut material to be cut transversely to the feed direction during a stop cycle of the magazine stamp, whereby after a magazine filling the magazine stamp is moved in the direction of the gate knife before activation of the separating knife, the material to be pre-sealed and only after it is pressed against a counterholder and a preselected counterpressure is reached Cutting knife is activated while the magazine stamp executes the first stop cycle, characterized in that the rotation of the cutting knife ( 6 ) is controlled so that after the feed of the magazine stamp ( 13 ) has ended, before the magazine ( 2 ) comes to a standstill and thus also forms the counterhold. 2) Cutting machine for performing the method according to claim 1 with a box-shaped magazine for the material to be cut, in which a clockwise longitudinally displaceable magazine stamp presses the material to be cut against a gate knife, which is arranged at the opposite open end of the magazine, one in front of the gate knife a drive motor from a driven separating knife with an at least approximately axially parallel to the longitudinal direction of the magazine axis of rotation for cutting off the longitudinally cut by the gate knife is arranged, characterized in that the drive motor is a brake motor ( 23 ) and that the separating knife ( 6 ) as a counterhold for the material to be cut is formed which is at a standstill in front of the magazine opening. 3) Cutting machine according to claim 2, characterized in that the separating knife ( 6 ) has a size and shape that it covers at least approximately the largest part of the cross-sectional area of the magazine ( 2 ). 4) Cutting machine according to claim 2 or 3, characterized in that the cutting knife ( 6 ) on its side facing away from the gate knife ( 14 , 15 ) is provided with a support bracket ( 17 ) which is supported on a fixed part of the cutting machine. 5) Cutting machine according to claim 4, characterized in that the support bracket is at least approximately the drive shaft ( 16 ) of the cutting knife ( 6 ) opposite. 6) Cutting machine according to claim 4 or 5, characterized in that the support bracket ( 17 ) is provided with a roller ( 18 ) which can be pressed onto the separating knife ( 6 ). 7) Cutting machine according to claim 6, characterized in that the roller ( 18 ) is arranged so that there is a play between the cutting knife ( 6 ) role during rotation. 8) Cutting machine according to claim 6 or 7, characterized in that the extension of the axis of rotation of the roller ( 18 ) through the axis of rotation of the cutting knife ( 6 ). 9. A method for cutting food in strip or cube shape, wherein by a Ma gazinstempel in a box-shaped magazine, the material to be cut is cyclically pressed by a gate knife arranged at the opposite end, the cut and pressed by the gate knife and slit by a front of the gate knife lying rotary cutting knife is cut off transversely to the feed direction during a stop cycle of the magazine stamp, the magazine stamp being displaced towards the gate knife after a magazine filling and before activation of the cutting knife, and wherein the material to be cut is pre-compacted and only pressed against a counterholder and after reaching one preselected counter pressure, the separating knife is activated while the first stop cycle is being carried out by the magazine stamp, characterized in that the rotation of the separating knife ( 6 ) is controlled in such a way that it stops after the feed of the magazine has ended Temples ( 13 ) before the opening of the magazine ( 2 ) brought to a standstill and thus the counterhold is formed at the same time. 10. The method according to claim 9, characterized in that while the magazine stamp ( 13 ) performs the first stop cycle, the cutting knife ( 6 ) is activated only after an adjustable delay time.