WO2013110688A1

WO2013110688A1 - Slicer for bread

Info

Publication number: WO2013110688A1
Application number: PCT/EP2013/051298
Authority: WO
Inventors: Reinald Weiss
Original assignee: R. Weiss Verpackungstechnik Gmbh & Co. Kg
Priority date: 2012-01-24
Filing date: 2013-01-24
Publication date: 2013-08-01
Also published as: DE102012100587A1

Abstract

The invention relates to an apparatus for cutting bread (B) into slices (S), comprising at least one blade (14), preferably a rotating circular blade, which is guided between a feed section (3) feeding the bread (B) to be sliced to the blade (14) and a removal section (4) receiving the cut slices of bread (S), and further comprising at least one device (22, 23, 24) moving, preferably advancing the bread (B) from the feed section (3) towards the knife (14). The apparatus according to the invention is characterized in that in the region of the edge of the tray (5) of the removal section (4) close to the knife (14) a substantially vertical rigid wall (6) projects upward and is stationary with respect to the tray (5), the upper edge (7) of said wall extending, along the bread cutting width, at the same height as or below the bread contact surface of the tray (21) of the feed section (3).

Description

Cutting device for bread

The invention relates to a device for cutting bread according to the preamble of claim 1.

Such machines are known. They are mostly used in bakeries to offer customers freshly cut bread. A known type of bread slicing machine works with a circular blade, which circulates circularly by means of an eccentric and in this case emerges from a cutting gap in each case cuts off a slice of the slowly continuously or clocked forward pushed bread and then dips back into the cutting gap. The sliced bread can be taken out of the machine and placed on a so-called tongue to put a bag over the disc package.

A disadvantage of these known bread slicing machines that the uniform removal of the sliced bread slices away from the knife can lead to complications, since the last sliced bread slice is not actively transported away from the knife, but on the contrary of the previously cut slice is still urged against the knife. As a result, the cutting and transport process is not optimal.

It is an object of the present invention to provide a bread slicer according to the preamble of claim 1, which has better cutting and transport properties.

This object is achieved in a bread slicer of the type mentioned by the features of claim 1.

The advantages of the invention are in particular to be seen in the fact that the wall projecting from the bottom of the discharge section prevents the lower Disc area of the last sliced and now on the wall adjoining bread slice - ie before advancing the loaf to the beginning of the next cut - is pushed back by the previously cut slices against the knife. The subsequent push through the loaf of bread to cut off the next slice then conveys the slice pack away from the wall so that a clean cut and remove process is achieved. The subsequently cut disc then has enough space to be separated unmolested from the previously cut from the loaf of bread.

Advantageously, the rigid wall is formed integrally with the bottom of the discharge section. This results in no gap in which dust or crumbs could accumulate. Also, the production cost is very small.

In the aforementioned context, it is preferred if the rigid wall forms an upwardly bent portion of the bottom of the discharge section. The wall is preferably realized by simple bending of the soil.

The thickness of the wall is preferably less than that of a bread slice having a normal thickness of 8-12 mm. The wall thickness is in this case advantageously less than 5 mm, preferably less than 3 mm, so that the cut disc does not fall on the top wall, but in the space between the previously cut disc and the wall.

It has proved to be advantageous if the wall has a height of 5 mm to 20 mm, while the height difference between the surfaces of the two floors is between 5 mm and 25 mm. In this case, the height difference between the bottom of the feed section and the bottom of the discharge section is measured.

The device according to the invention is expediently together with at least one device for active or passive transport of the cut slices of bread away from the knife, said at least one device supports the pushing device, which pushes the bread to the knife and presses after each cutting the last cut slice in the Abführabschnitt to prepare for the next cutting operation. According to one embodiment of the invention, the bottom of Abführabschnitts may be inclined in the feed direction of the bread relative to a horizontal plane, so that the sliced bread slices slip away from the knife due to their gravity. Also, an additional vibrator in Abführabschnitt support the transport of the discs away from the knife.

Advantageous developments of the invention are characterized by the features of the subclaims.

In the following the invention will be explained in more detail with reference to figures. Show it:

Figure 1 is a plan view of a first embodiment of a cutting device according to the invention, schematically illustrated;

Figure 2 is a schematic end view of the embodiment

according to the figure 1 in the cutting operation;

Figure 3 is a schematic front view of the circular blade and the

Bottoms of the feed and discharge sections, with the slice of bread just cut off

FIG. 4 shows the view of FIG. 3 with the bread loaf advanced in preparation for the next cut;

Figure 5 is the view of Figures 3 and 4 during a cutting operation, and Figure 6 is a schematic end view of the discharge section in the direction of the knife.

FIGS. 1 and 2 show a first embodiment of a cutting device 1 according to the invention. 1 shows schematically a plan view of the device 1 with a housing 2, in which in particular a feed section 3 and a discharge section 4 are provided and which can be closed by a hood 17. The feed section 3 comprises a base 21, preferably made of stainless steel, with a flat receiving surface on which the bread B to be cut is placed. Furthermore, in the feed section 3, a claw which can be swung up and down

22 on an arm 23 which is perpendicular to the direction of the bread B, arranged. By manual or automatic swinging down the claw 22 is pressed into the facing her end of the loaf of bread B. The arm

23 and with it the claw 22 are motor-driven along a direction in the direction of thrust, linear rail 24 to push the bread B in the direction of a circular blade 14 (see arrow P). The claw 22, the arm 23, the rail 24 and the feed motor (not shown) are essential elements of the means for transporting the bread B from the feed section 3 to the knife 14.

Two different positions of the push arm 23 are shown in FIG. 1: the starting position is shown in solid lines, while a middle position is shown in dashed lines. The double arrow indicates the possible directions of movement of the push arm 23.

The bread B is preferably timed to each cut off the slice thickness clocked to the knife 14. The last cut slice S and all previously cut slices S are pushed through the slab thickness B which follows the slice thickness B into the discharge section 4. The circular blade 14 is mounted in a vertical plane and moves when revolving out of a gap 25, which separates the feed section 3 from the discharge section 4, out and back into this. As can be seen from the schematic representation according to FIG. 2, in which many parts have not been shown for the sake of better clarity, the circular blade 14 is mounted eccentrically about a shaft 15 for this purpose and is driven by a motor 19 controlled by a control 20. Two different positions of the circular blade 14 are shown by way of example in FIG. 2, two of them with dashed lines. In particular, it can be seen how the circular knife 14 is able to cut the bread B into slices. The exact eccentric mechanism is not shown; However, the skilled person is familiar with corresponding constructions. In the present case, they are not essential to the invention.

The discharge section 4 comprises in the illustrated embodiment a preferably made of stainless steel bottom 5, which is inclined relative to a horizontal plane both in the bread advancing direction P and the machine front side 1 a (see Figure 2, not shown in Figure 1). Towards the operator side or machine front side 1 a, a side support 9 for the slices of bread projects in the region of the front edge of the base 5. The side support 9 is presently inclined relative to a vertical plane to the front side 1 a. Floor 5 and side support 9 are in this case substantially perpendicular to each other. Likewise, the feed section 3 has a corresponding side support 10, which runs in the same plane as the side support 9 (see Figures 1 and 2). The bottom 21 is like the bottom 5 to the machine front side 1 a inclined, but not in the thrust direction P.

FIGS. 1-2 also show a pneumatic cylinder 18 with which the hood 17 can be opened and closed. The pneumatic cylinder 18 is presently connected to the controller 20 (details not shown), for example, to open the hood 17 when the Cutting process is completed. When the knife 14 is running, however, the hood 17 can not be opened.

Shown is also an end stop 28 for the first cut slice S, which is positioned at the beginning of the cutting process close to the knife 14 and by means of a direction P to the vertical, driven by a motor (not shown) arm 37 along a in the direction P extending rail 38 is moved together with the claw 22 in the same direction by the almost nearly the same or a slightly larger way in the same direction. The first cut slice S falls against the end stop 28, which thus ensures the cohesion of the disc package. In the figure 1, the end stop 28 is shown at the end of the cutting process.

According to the invention according to Figures 3-5 (front view) and Figure 4 (end view) of the bottom 5 to the blade 14 towards bent upwards, so that a wall 6 is formed, which is parallel to the circular blade 14 and - in the slicing - of this one horizontal distance of at most a few millimeters. The height of the wall 6 is about 5-20 mm. The wall thickness is - when integrally with the bottom 5 - depending on the choice of stainless steel sheet of the bottom 5 about 2-3 mm.

The upper edge 7 of the wall 6 is present below the bread support surface of the bottom 21st In this case, according to the illustrated embodiment, a horizontal gap is formed between the top edge 7 of the wall and the bottom of the bottom 21, which are laterally opposed to one another, i.e. to the bottom. in the horizontal direction, are arranged offset.

The height difference between the bearing surfaces of the feed and discharge section 3, 4 can be about 10 mm. In the operation of the device 1 according to the invention, a date is first picked out in Figure 3, to which some slices S have already been cut off and the last cut slice S between the wall 6 and the previously cut slice S has slipped. Referring again to Figure 4, the knife 14 has been dipped back into the gap 25 (and shown only in dashed lines for orientation in the cutting position for orientation) and the bread B has been advanced by the arm 23 and the claw 22 to prepare for the next cutting operation. The end of the bread to be cut in this case pushes the disc pack away from the knife 14 so that space is created for the disc S to be cut off next. Since the thrust on the disk package happens with momentum and - as mentioned above - the bottom 5 is inclined in the feed direction P down to a horizontal plane, that is designed as an inclined plane, the disk package slips a little further into the discharge section 4. It thus arises a total gap between the disc package and the wall 6 for the next disc to be cut off. The subsequent cutting process is shown in FIG. The already cut disc area hereby tilts slightly to the discharge section 4, before the disc S is completely cut off and falls obliquely down to the bottom 5 in the gap between the adjacent disc S and the wall 6.

The rigid and firmly connected to the bottom 5 wall 6 prevents the last cut slice S is urged in the direction of the gap 25. This is not necessarily the case, but can, if occurring, interfere with the operation of the cutting device sensitive. The disc S is pressed in such a case against the wall 6 and can be supported laterally here. Thus, this slice S can not get in the direction of the loaf B nor in the kerf 25. It is thus guaranteed a safe and fast cutting sequence. The length of the wall seen in the cutting direction is expediently at least as large as the largest breadths that are to be cut with the device according to the invention. But this is not mandatory; even shorter lengths can serve the same purpose. The invention is not limited to the illustrated embodiment. Modifications within the scope of the claims are possible at any time. Thus, the wall 6 can also be attached as an angle section on the bottom 5, expediently on the underside thereof. Also, other transport means for the bread and / or slices of bread are possible within the scope of the invention, both passive and active means of transport, such as a vibrator in Abführabschnitt come into question (the inclined plane shown in Figure 2 is a passive means of transport).

LIST OF REFERENCES

cutter

a front of the device

b Back of the device

casing

feeding

discharge section

ground

wall

Top edge of the wall

side support

0 side support

4 circular knives

5 wave

7 hood

8 lifting cylinders

9 engine

0 control

1 bottom of the feed section

2 movable claw

3 arm

4 rail

25 gap

28 end stop

37 arm

38 rail

B bread

S bread slices

Claims

Patent claims

1 . Apparatus for slicing bread (B) into slices of bread (S), comprising at least one knife (14), preferably a rotating circular knife, which is inserted between a feed section (3) for feeding the bread to be cut (B) to the knife (14) and a Abführabschnitt (4) for receiving the sliced bread slices (S) is guided, and at least one means (22, 23, 24) for moving, preferably pushing, the bread (B) from the feed section (3) to the knife (14), characterized characterized in that in the region of the edge (14) of the bottom (5) of the discharge section (4) which faces the blade (14), a substantially vertically extending wall (6), stationary with respect to the bottom (5), whose upper edge (7) rises along the bread slice width at the same level or below the Brotauflagefläche the bottom (21) of the feed section (3).

2. Apparatus according to claim 1, characterized in that the

Wall (6) is integrally formed with the bottom (5) of the Abführabschnitts (4).

3. Apparatus according to claim 1 or 2, characterized in that the wall (6) forms an upwardly bent portion of the bottom (5) of the discharge section (4).

4. Device according to one of the preceding claims, characterized in that the wall (6) has a thickness which is less than the usual thickness of a bread slice (S), in particular thinner than 5 mm, preferably thinner than 3 mm.

5. Device according to one of the preceding claims, characterized in that the wall (6) has a height of 5 mm to 20 mm, measured from the bottom (5) of the Abführabschnitts (4) possesses.

6. Device according to one of the preceding claims, characterized in that the height difference between the bottom (21) of the feed section (3) and the bottom (5) of the Abführabschnitts (4) is 5 mm to 25 mm.