EP0392542A1 - Food cutting machine with cover cap - Google Patents

Abstract

The invention relates to a cutting machine with an upper cover cap for the inlet and/or outlet bread channel, the upper horizontal plate of the cover cap being displaceable horizontally rearwards to free the bread channel. <IMAGE>

Description

The invention relates to a cutting machine with an upper cover for the inlet and / or outlet bread channel.

There are various slicers on the market, the so-called slicers for slicing bread etc. These machines are available with semi-automatic but also with fully automatic feed. All these machines have in common that the clippings are pushed against the rotating knife on a movable carriage. In principle, you push with the right hand, since the engine block for the knife holder is on the left. The disadvantage of bread is that the slices are bent and - depending on the type of bread - can break (almond or raisin mares).

On machines with automatic feed and stacking device, the bread is stacked upside down. In addition, the take-off side is not adequately secured against injuries. In addition, these machines have only a very limited adjustment range, essentially up to max. 20 mm.

Machines with circular knives have the advantage of being able to cut even delicate clippings properly if the pieces are not too big.

There are also so-called sickle knife machines for cutting (so-called percussion knife machines). These machines are used exclusively for commercial use. With these machines, the clippings (bread, etc.) are pushed through a secured channel system and cut into uniform slices by the sickle knife. The clippings remain even and can be removed from the outlet channel after lifting the safety hood. The feed is essentially from the right side to the left side. The system is known and we refer here to our own patents from 1981 and 1982. The disadvantage with these machines is that, due to the drive system, fresh bread can only be cut to a limited extent, or depending on the nature of the bread it is not possible to determine certain To cut breads. In addition, these machines are quite large for use in the shop, for example for storage on the bread shelf. In recent years, for example, the trend in the bakery trade has been to increasingly set up these universal fresh bread slicers for customer service in the shop.

The object of the invention is to provide a structurally simple, safe-working cutting machine of the type mentioned, the hood of which opens and closes automatically and is not susceptible to faults.

This object is achieved in that the upper horizontal plate of the hood is horizontally displaceable to the rear in order to open the bread channel.

• Figur 1 eine Draufsicht auf ein erstes Ausführungsbeispiel,
• Figur 2 eine Seitenansicht nach II-II in Figur 1,
• Figur 3 eine Seitenansicht eines zweiten Ausführungsbeispiels,
• Figur 4 eine Draufsicht auf das zweite Ausführungsbeispiel
• Figur 5 eine perspektivische Ansicht des zweiten Ausführungsbeispiels,
• Figur 6 eine perspektivische Ansicht deiner Haltevorrichtung für das Schnittgut mit eingezogenen Klauen,
• Figur 7 die Vorrichtung nach Figur 6 mit halb ausgefahrenen Klauen,
• Figur 8 die Vorrichtung nach Figur 6 mit ganz ausgefahrenen Klauen,
• Figur 9 einen senkrechten Schnitt durch Gehäuse und Abdeckhaube.

Advantageous embodiments of the invention are set out in the subclaims. Embodiments of the invention are shown in the drawings and are described in more detail below. Show it

• FIG. 1 shows a top view of a first exemplary embodiment,
• FIG. 2 shows a side view according to II-II in FIG. 1,
• FIG. 3 shows a side view of a second exemplary embodiment,
• Figure 4 is a plan view of the second embodiment
• FIG. 5 shows a perspective view of the second exemplary embodiment,
• FIG. 6 shows a perspective view of your holding device for the clippings with the claws retracted,
• FIG. 7 shows the device according to FIG. 6 with the claws half extended,
• FIG. 8 shows the device according to FIG. 6 with the claws fully extended,
• Figure 9 is a vertical section through the housing and cover.

In the lower part of the machine housing 1 there is a double linear guide 2 (in the form of rails) on which a transport carriage, in particular carriage 3, is attached. On the plate of the transport carriage 3 there is a motor block, for example for fastening a brake motor 4 and for holding a knife 5. The transport carriage 3 can be moved back and forth via a separate drive of a geared motor 6. The switch is made by limit switches 7 in the front and rear area. While the front limit switch 7 is a pure changeover switch, the rear limit switch simultaneously gives the command to the after reaching the end point electronic control to put the feed motor 8 in operation for the cutting thickness setting.

The slide for the feed is also mounted on a linear guide 9. The feed motor 8 can be a stepper motor as well as a geared motor, which is controlled via a rotary encoder. The electronics for the entire control system, but in particular for the cutting thicknesses and the number of slices, is preferably equipped with a microprocessor

In the front and rear part of the housing there are 2 shock absorbers 10 in the area of the linear guide, which absorb the respective back pressure of the mass movement in order to ensure that the housing remains stationary during the cutting process. The middle plate of the housing to delimit the knife chamber is equipped with a slot in which the shaft for the knife holder can move back and forth.

In the rear part of the knife chamber 11 there are the so-called oil chambers 12 on the right and left, equipped with felt and brushes, in order to oil the knife during each cutting process. The bread insertion channel 13 is located in the rear part of the housing. For safety reasons, the channel is secured by a preferably plastic hood.

These covers are usually fastened by means of hinges and raised when the cut material is inserted or removed. This arrangement in turn requires additional space upwards.

In the proposed new machine, these covers are attached to the rear part of the by means of a running rail Machine pushed. In the rear part of the cover there is a magnet that activates the magnetic switch son, so that the circuit is immediately interrupted if it is moved slightly. This affects both the insertion and the outlet channel. The clippings are fastened in the inlet channel by a claw 33. This attachment can be done manually but also in such a way that a gear motor 35 is attached to the slide system 34, which drives the shaft to which the claw is attached.

This is done in such a way that a gear is attached to the elongated axis of rotation of the claw 33 instead of the lever that puts the claw into operation when operated manually, which in turn is connected to the geared motor 35. The claw is then actuated via the electronics in conjunction with the keys on the membrane keyboard. The function looks like this:

After the clippings are placed in front of the claw and are completely closed in the case of cover hoods, after pressing the "forward" button, the claw first holds the clippings and then transports them forward for cutting.

In the second exemplary embodiment according to FIGS. 3 to 5, the knife shaft 21 is driven by means of a chain or belt drive via a geared motor 22 which is attached in a stationary manner. The chain drive or belt drive is tensioned by means of tensioners 23 and 24 in such a way that the greatest possible wrap angle is achieved. Deflection rollers 25 and 26 are located at the front and rear end points.

The direction of rotation of the drive blade shaft is always in one direction. Since tensioners are attached to the knife shaft on the carriage 27, the carriage 27 can perform a back and forth movement with the knife shaft being stationary.

The carriage 27 is driven in a reciprocating motion by a separate geared motor 28. A movement takes place by means of a chain or belt drive with lateral deflection 29, 30.

The guide 31 of the carriage consists of a linear guide (rails). In the respective end position, the slide is electronically switched into the opposite direction of movement by means of a limit switch. There is a continuous cutting process with a to-and-fro movement of the slide, with a stationary knife drive and stationary drive of the slide.

Due to the mass movement of the knife (centrifugal force), the carriage also tries to run forward in its rear end position, even when the carriage drive is switched off. Therefore, it is held in the rear end position with a movable grid 32. The grid can be released again with a lifting magnet 33, depending on the specification of the cutting command. When the cutting process is complete, it snaps back into place and holds the carriage back at the specified end point. The material to be cut is fed laterally via a microprocessor-controlled drive.

Claims (5)

1. Slicer with an upper cover for the inlet and / or outlet bread channel, characterized in that the upper horizontal plate of the cover is horizontally displaceable to the rear to release the bread channel. 2. Cutting machine according to claim 1, characterized in that the front edge of the plate is curved or folded down. 3. Cutting machine according to claim 1 or 2, characterized in that a magnet is attached to the cover, which actuates a magnetic switch. 4. Cutting machine according to one of the preceding claims, characterized in that the cover is movable by a motor. 5. Cutting machine according to claim 4, characterized in that at least one rack is attached to the cover, which is driven by an electromotive driven pinion.

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