DE29916777U1 - Cutting machine with leftovers - Google Patents

Description

Bizerba GmbH & Co. KG B 212/0999 K-R

Wilhelm Kraut-Str. 65
72336 Baiersbronn

Cutting machine with scrap holder Description:

The invention relates to a slicing machine, in particular for slicing foodstuffs with manual cutting material feed, with a machine housing, a rotating driven circular blade, a carriage which can be moved back and forth parallel to the cutting plane of the circular blade and has a cutting material support, with a cutting material holder which can be slid on the carriage transversely to its direction of displacement and pivotally mounted in the direction of displacement of the carriage, to the free end of which a slide protection plate with a residue holder plate for the cutting material feed is pivotably attached with an axis of rotation running perpendicular to the cutting plane.

Stricter requirements regarding accident prevention and hygiene regulations for cutting machines in the food industry, e.g. European Standard No. EN 1974, brought improved protection for the operator and advantages for the consumer. However, the stricter regulations also made it more difficult to handle the cutting machine during cutting and cleaning due to the prescribed protective devices.

The present invention serves to simplify the cleaning of the machine with regard to the cutting material feed unit and at the same time to improve the hygiene standard.

Cutting machines with vertical or inclined circular knives are known in which the material to be cut is pushed forward in the direction of the circular knife with the help of a pivoting material holder after being placed on a channel-shaped material support of the carriage.

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The familiar workflow usually goes something like this: the material to be cut is pressed by hand with the help of the material holder against a lateral material guide of the material support and against an adjustable stop plate in the direction of the circular knife. The position of the stop plate in relation to the circular knife determines the thickness of the slices to be cut. The slices are separated from the material to be cut by moving the carriage back and forth.

When cutting longer items, the item holder rests on the item with a slider protection plate that is pivotably attached to its free end. During the cutting process, the operator's hand is protected on the side of the slider protection plate facing away from the circular blade. However, the fingers can grip the slider protection plate and come ever closer to the danger zone of the circular blade as the cutting process progresses. To prevent cuts, a stop that depends on the pivot angle is attached to the pivot axis of the item holder at a distance of approx. 60 mm from the circular blade. This prevents the item holder from being pushed further forward in its position on the item. However, if the item holder is pivoted further into a safety position in which the slider protection plate rests on the item support, the item holder can slide past the stop and be pushed further to the circular blade level to cut the remaining item.

In this safety position of the slider protection plate, it is no longer possible to grasp it with your fingers because its outer shape practically completely fills the channel-shaped material support. An additional finger guard attached to the material support prevents fingers from touching the circular blade during the cutting process. However, it is no longer possible to hold the now shorter material to be cut. To prevent the material to be cut from sliding back and forth with the carriage during the lifting movement, an additional residue holder plate is attached to the slider protection plate in the direction of the circular blade. On the side facing the circular blade, this has needle-shaped tips or teeth that grip onto the end of the material to be cut that is to be pushed forward.

DE-PS 36 37 293 discloses a cutting machine with a pivoting cutting material holder, in which the residue holder plate is firmly connected to the slider protection plate by means of a screw and an additional centering pin. In order to clean the food that comes into contact with the cutting material, the residue holder plate must be dismantled once or several times a day, while the slider protection plate cannot be removed for safety reasons.

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must be removable. To do this, the fastening screw must be removed from the slide protection plate using a tool. By turning the residue holder into a keyhole-shaped, enlarged recess, it can then be removed in the direction of the blade and, after cleaning, e.g. in an ultrasonic bath, it is reassembled in the reverse order.

The disadvantages of this design are the cumbersome handling when dismantling and reattaching the residue holder plate, the threads of the screw connection which are difficult to clean and the key-shaped recess which is too large from a safety point of view because it allows fingers to reach through.

The object of the invention is to simplify the removal and assembly of the residue holder plate while at the same time improving the safety and hygiene aspects.

The object is achieved according to the invention in that the residue holder plate is held together with the slide protection plate in an easily detachable manner by means of magnetic force and is secured against slipping in the sliding direction of the slide by positive engagement with the slide protection plate.

The advantage of the residue holder plate is that it is very easy to remove for cleaning. All you need to do is press your finger on a protruding part of the residue holder plate to lift it off the slider protection plate against the magnetic force holding it together and then remove it from the machine for cleaning, e.g. in an ultrasonic bath.

It is just as easy to reattach the residue holder plate to the slide protection plate after cleaning by hooking it in and swiveling it into the working position.

A permanent magnet holds the residue holder plate securely in place. Lateral shear forces that act when holding the material to be cut and cutting during the back and forth movement of the carriage are absorbed by the positive and low-play groove/tenon connections between the residue holder plate and the slide protection plate.

Re-attachment of the residue holder plate is made easier by additional insertion bevels on the tongue/tenon joints.

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There are no holes in the slider protection plate, which cannot be removed for safety reasons. The clear width of the recess is less than 6 mm on the narrow side. This means that it is not possible to reach into the area of the circular blade with your fingers, thus ensuring maximum safety.

The permanent magnet with counterholder is advantageously placed below the upper groove/tenon connection. This means that the attractive magnetic force acts on the entire surface of the residue holder plate and holds it together with the slide protection plate.

The permanent magnet and counterholder are recessed and sealed into the slide protection plate or residue holder plate so that there are no protruding edges or recesses. This has the advantage of making these parts easy to clean.

An embodiment of the invention is shown in the drawing and described in more detail below. They show:

Fig. 1 is a perspective view of a cutting machine.

Fig.2 is a front view of the reciprocating carriage with partial section.

Fig. 3 is a side view of the carriage in the direction of arrow “X” according to Fig. 2.

Fig. 4 is a section AA in Fig. 3 in an enlarged view.

The cutting machine 1 shown in Fig. 1, viewed from the operator's perspective, comprises a machine housing 2 in which a rotating, driven circular blade 3 is mounted. An adjustable stop plate 4 for the material to be cut, which runs parallel to the cutting plane of the circular blade 3, determines the slicing thickness in a known manner. The material to be cut into slices is placed on the channel-shaped material support 5 of a carriage 6 which can be slid parallel to the cutting plane of the circular blade.

A sliding axis 7 is attached to the cutting material support 5, on which a cutting material holder 8 is pivotably mounted and slidably displaceable transversely to the direction of displacement of the carriage.

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At the free end of the cutting material holder 8, a slide protection plate 9 made of transparent plastic with a rotation axis 10 running parallel to the sliding axis 7 is attached in a partially pivotable manner in a known manner.

The cutting material holder 8 with slider protection plate 9 can be pivoted from a pivoted-away position for inserting the cutting material into the cutting position by means of a handle 11, so that it either rests with the lower part of the slider protection plate 9 on the even longer cutting material, or in the case of shorter cutting material it rests directly on the cutting material support 5.

In the latter position, as shown in Fig. 3, in which the slider protection plate 9 with its outer contour fills the channel-shaped cutting material support 5 with only a few mm of clearance, the slider protection plate 9 can be pushed up to the circular blade 3 in order to cut the remaining cutting material. The operator's hand is protected against cuts on the circular blade 3 on the one hand by the high slider protection plate 9 and additionally by a finger guard 13 attached to the cutting material support 5.

As can be seen from Fig. 2 to 4, a residue retaining plate 14 made of transparent plastic is attached to the slide protection plate 9 in the direction of the circular blade 3. On its surface facing the circular blade 3, this is equipped with needle-shaped tips 15 or teeth for securing the end of the material to be cut in a non-slip manner during slicing.

According to the invention, the residue holder plate 14 is held together with the slide protection plate 9 by the positive interlocking of the two parts and by magnetic force. In the exemplary embodiment, this is achieved by forming an L-shaped leg 12 on the lower part of the residue holder plate 14, into which two angle-shaped grooves 18 are machined. The residue holder plate 14 can be hung from below with little play via two pins 19 attached to the lower part of the slide protection plate 9. A projecting leg 16 is formed in the upper part of the residue holder plate 14, which is inserted into a matching recess 17 in the slide protection plate 9 opposite it by means of a pivoting movement so far that it protrudes through it.

The recess 17 preferably has a circumferential bevel 24 so that the leg 16 can be inserted more easily and the recess 17 can be cleaned more easily when the residue holder plate 14 is removed.

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Below the recess 17, a permanent magnet 21 with an enveloping seal 22 is placed and fastened in a blind hole 20 of the slide protection plate 9. In alignment with the blind hole 20, a counterholder 23 is firmly installed in the residue holder plate 14, flush with the surface of the residue holder plate 14 that rests on the slide protection plate 9.

The permanent magnet 21 with seal 22 and the counterholder 23 are attached, for example, by ultrasonic welding. Their arrangement can of course also be swapped over from the described embodiment, so that, for example, the permanent magnet 21 is mounted in the residue holder plate 14. Likewise, the positive engagement of the residue holder plate 14 and the slide protection plate 9 can be modified from the embodiment and vary within the solutions known to the person skilled in the art. The decisive factor is the ease of disassembly and assembly of the residue holder plate 14. To remove the residue holder plate 14, all you need to do is press your finger against the leg 16 protruding from the side of the slide protection plate 9 facing away from the circular knife in order to cancel the magnetic force of the permanent magnet 21 and to swing the residue holder plate away into a position 14' shown in dash-dotted lines in Fig. 2, from which it can then be easily removed. To facilitate the assembly of the residue holder plate 14 after cleaning, pins 19, grooves 18, legs 16 and recess 17 are provided with insertion bevels.

Claims (10)

1. Cutting machine ( 1 ) for cutting foodstuffs, with a machine housing ( 2 ), a rotatingly driven circular blade ( 3 ), a carriage ( 6 ) which can be moved back and forth parallel to the cutting plane of the circular blade ( 3 ), with a cutting material support ( 5 ), with a cutting material holder ( 8 ) which can be slid on the carriage ( 6 ) transversely to its direction of displacement and is pivotably mounted in the direction of displacement of the carriage, at the free end of which a slide protection plate ( 9 ) with a residue holder plate ( 14 ) for the cutting material feed is pivotably attached with a rotation axis ( 10 ) running perpendicular to the cutting plane, characterized in that the residue holder plate ( 14 ) is held together with the slide protection plate ( 9 ) in an easily detachable manner by means of magnetic force and is prevented from slipping in the direction of displacement of the carriage ( 6 ) by positive engagement with the Slide protection plate ( 9 ) is secured. 2. Cutting machine according to claim 1, characterized in that the residue holder plate ( 14 ) has at least one leg ( 16 ) projecting in the direction of the slide protection plate ( 9 ) which projects through a recess ( 17 ) of the slide protection plate ( 9 ) in a form-fitting manner and with little play. 3. Cutting machine according to claim 2, characterized in that the projecting leg ( 16 ) has a rectangular cross-section and the clear width of the narrow side of the recess ( 17 ) is not more than 6 mm. 4. Cutting machine according to claim 2 and 3, characterized in that the leg length is greater than the thickness of the slide protection plate ( 9 ). 5. Cutting machine according to one of claims 1 to 4, characterized in that an L-shaped leg ( 12 ) is formed on the lower part of the residue holder plate ( 14 ) in the direction of the slide protection plate ( 9 ), in which two grooves ( 18 ) are incorporated, into which two pins ( 19 ) attached to the lower part of the slide protection plate ( 9 ) can be inserted in a form-fitting manner. 6. Cutting machine according to one of claims 1 to 5, characterized in that the leg ( 16 ) with the recess ( 17 ) and the pins ( 19 ) with the grooves ( 18 ) fit together with little play and the elements ( 16 to 19 ) are provided with insertion bevels for easier hanging of the residue holder plate ( 14 ) on the slide protection plate ( 9 ). 7. Cutting machine according to claim 6, characterized in that the recess ( 17 ) has a circumferential bevel ( 24 ). 8. Cutting machine according to one of claims 1 to 7, characterized in that the residue holder plate ( 14 ) and the slide protection plate ( 9 ) are held together by a permanent magnet ( 21 ) with a counterholder ( 23 ), the permanent magnet ( 21 ) being placed near and below the recess ( 17 ). 9. Cutting machine according to claim 8, characterized in that the permanent magnet ( 21 ) is countersunk and sealed in a blind bore ( 20 ) of the slide protection plate ( 9 ), the blind bore being closed with a seal ( 22 ). 10. Cutting machine according to claim 8 or 9, characterized in that the counterholder ( 23 ) is recessed in the residue holder plate ( 14 ) and is firmly installed flush with the surface of the residue holder plate which rests on the slide protection plate ( 9 ).