DE8816737U1 - Slicing machine - Google Patents

Description

Patent Attorneys Wenzel & Kalkoff Flaßkuhle 6 PO Box 2448 5810 Witten/Ruhr

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2079.9 Ca/Cr

Applicant:

Mr. Herman»! Scharfen, Dipl.-Ing., 4630 Bochum

Designation:

Slicing machine

The innovation concerns a slicing machine with a circular knife that is partially covered along its circumference with a hood and with a guide wall that adjoins the circular knife in the cutting area, which in an upright position can be adjusted parallel to the circular knife from a zero position in which its edge closest to the knife is essentially aligned with the cutting edge of the circular knife to adjust the slice thickness.

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On slicing machines of the above type, the risk of accidents caused by touching the rotating circular blade with the thumb or fingers has been largely eliminated by appropriate safety measures. However, operating personnel repeatedly sustain cuts when the machine is at a standstill and are cleaning it. The cutting edge of the circular blade is covered by the hood which largely covers the circular blade and is therefore not touchable; access to the ^curved part of the cutting edge not covered by the hood is blocked by the curved edge of the guide wall in the zero position of the guide wall, which is where it is during cleaning. Nevertheless, accidents when cleaning the machine cannot be completely ruled out. There is a risk that the operator will push the guide wall, which is usually only attached to a bracket at the bottom and otherwise extends freely upwards, backwards at least in the upper area when wiping or brushing, so that the cutting edge of the circular knife can be touched with the fingertips. This can lead to cuts, ·

The task is therefore to eliminate the risk of cuts when cleaning the machine at a standstill, when the guide wall is in the zero position.

According to the innovation, to solve this problem, the guide wall can be supported in the zero position by means of a latch on the hood of the circular knife in such a way that at least the edge of the guide wall closest to the knife cannot be pressed behind the cutting plane.

] According to the innovation, when the guide wall is in the zero position, a lock is activated between the guide wall and the hood of the circular knife, which prevents the guide wall from moving behind the cutting plane when it is subjected to pressure from the front during wiping or brushing or the like. As a result, a gap which increases from bottom to top - as seen from the side - cannot form between the edge of the guide wall closest to the cutter and the hood of the circular knife. -and and the" cutting edge of the circular knife, through which the cutting edge can be touched with the finger or thumb. The locking only takes place in the zero position of the guide wall, namely only in the position of the guide wall in relation to the circular knife, ^r i in which no cutting process can take place anyway. The fixed hood of the circular knife is selected to secure the position of the edge of the guide wall closest to the knife, so that locking can be carried out over a relatively short distance and in the critical area close to the knife. Operation outside the zero position of the guide wall is not affected by the new locking mechanism.

Whether the locking takes place from the hood to the guide wall or from the guide wall to the hood or, if necessary, in two parts from both components, depends on the type of locking selected and the structural conditions.

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it-x ucii «-ici. jc^ca. iJ-y cn i-iac -nine α j_» . ncuci. Uliy Dyciuau w_lj_i_i a solution is preferred, according to which a bolt that can be adjusted from a rest position to a locked position is mounted on the hood, which, when the guide wall is in the zero position, can be adjusted from the rest position to the locked position, in which the bolt engages behind the guide wall to provide support. The hood is preferred for storing the bolt because it forms a stationary component and its shape offers various options for bolt storage. The bolt and its

Bearing should be designed in such a way that it reaches behind the guide wall in the locked position and supports it against pressure, while the guide wall can be freely imagined in the rest position of the bolt as before. The bolt can also be fork-shaped at its part or end intended to engage with the guide wall and grip the guide wall between the fork tines. In any case, the rear support remains essential, regardless of the shape and length of the bolt selected.

According to the innovation, the latch should be positioned as close as possible to the upper end of the hood that spans the circular knife so that it engages behind the adjacent tongue-shaped section of the guide wall in the locked position. If the guide wall is subjected to a compressive force during cleaning, resulting in a springy bend to the rear, the extent of the deflection is greatest at the upper section of the guide wall on the knife side, which tapers off in a tongue-shaped manner. For this reason and because of the end of the hood that tapers off in this area as a storage option for the latch, attaching the latch at this point is particularly advantageous.

There are various options for the design, storage and adjustment of the latch from the rest position to the locked position. According to the innovation, it is preferred that the latch is designed as a locking pawl and is mounted on the hood so that it can rotate or pivot between the rest position and the locked position. With regard to the position of the locking pawl on the hood, it is advisable for the locking pawl to be mounted on the rear side of the hood or in a recess on the top of the hood. When designed as a locking pawl with a pivot bearing, the latch can be easily attached to existing machine types and, if necessary, also retrofitted.

As an alternative to a rotating locking pawl, the bolt can also be rotated between the rest position and

the locking position can be moved. In the locking position, the latch engages behind the guide wall to provide support, and when the slicing machine is started up, the latch is pulled back or pushed into the rest position on or in the hood.

Preferably, the latch in this embodiment is designed as a bolt or plate or the like that is mounted so as to be displaceable in the longitudinal direction.

To prevent attempts to move the guide wall from the zero position by mistake or through incorrect operation when the bolt is still in the locked position, the innovation is expediently characterized by a mechanical or electrical locking of the actuator of the guide wall in the locked position of the bolt.

There are various ways of operating the bolt. In the simplest case, the bolt can be adjusted by hand between the rest position and the locked position, regardless of whether it is a locking bolt or a pivoting pawl. In ^any case, it is advantageous if the bolt can be secured in the rest position and in the locked position, for example by means of a releasable latch or magnetic lock. This means that the bolt always has a defined position in which it is securely locked or completely released. In addition, the bolt cannot be accidentally or unintentionally adjusted by vibrations, etc.

Instead of being operated manually, the latch can now also be operated using a relay or one or more stepper motors. A motorized adjustment can be used, for example, for the rotary movement of a pawl, and the P. relay drive can be used to adjust a bolt as a latch.

However, according to the innovation, a solution is preferred in which the bolt can be adjusted using a Bowden cable that is guided to an actuating device. The spring force of the Bowden cable presses the pick S into the locked position, while a pulling force on the core of the _Bowden cable is required to adjust it to the rest position. The actuating device should be arranged in an easily accessible place. It can consist of a handwheel or a lever or the like.

A particularly advantageous and simultaneous automatic adjustment of the bolt from the rest position - the locked position when the guide wall reaches the zero position and from the locked position back to the rest position when the guide wall leaves the zero position - is made possible by coupling the actuation of the actuator of the guide wall with the actuation device of the bolt. For this purpose, in the case of a Bowden cable adjustment of the bolt, the Bowden cable is guided ^from the bolt through the machine to the actuation device of the guide wall and coupled to this. With this solution, the risk of accidents, i.e. the possibility of touching the cutting edge when wiping or brushing the guide wall, is automatically eliminated, namely without the need for additional measures such as another handle or an additional button press. Because of the new coupling, when the guide wall is brought into the zero position, the bolt is automatically moved from the rest position to the locked position without any further action, in which the guide wall is securely supported in its critical area. Conversely, the bolt is automatically moved back from the locked position to the rest position shortly before the guide wall leaves its zero position.

The coupling of the two actuating devices does not necessarily require the latch to be operated using a Bowden cable. The coupling of the actuating devices

is also possible by means of electrical control contacts which are either installed in the actuating device of the actuator of the guide wall or directly in the area of the movement path of the guide wall and in their zero position cause switching pulses to adjust the latch.

Examples of the innovation are explained in more detail below with reference to the drawing. The drawing shows:

Fig. 1 is a perspective view of the upper structure of a slicing machine;

Fig. 2 a rear view of the slicing machine from Fig. 1 including base frame;

Fig. 3 a top view of the slicing machine

according to Fig. 1 and 2;

Fig. 4 a plan view of a locking mechanism of a guide:

wall according to a first embodiment as a partial view of the slicing machine according to Fig. 1 to 3;

Fig. 5 is a side view of a locking mechanism of the ^guide wall according to a second embodiment as a partial view of the slicing machine according to Figs. 1 to 3;

Fig. 6 a top view of the locking mechanism according to Fig. 5

again as a partial view.

The machine 1 shown in Fig. 1 to 3 is used for cutting cold cuts such as sausage, meat, etc. The upper structure of the machine 1, which can be seen particularly clearly in Fig. 1, comprises a guide wall 2 with an upper tongue-shaped section 3

directly next to a circular knife 4, which is largely covered by an upper hood 5 and a front cover 6, so that the cutting edge 4a is only exposed in the cutting area between the circular knife 4 and the guide wall 2.

A carriage 7 with a base 8 and an edge stop 9 as well as an adjoining hand guard 10 running around the corner, which, like the stop 9, is made of thick-walled transparent plastic, is used to hold the material to be cut during cutting.

On the side of the base 8 opposite the stop 9, a guide rod 12 is attached between brackets 11, on which a guide sleeve 13 is mounted so that it can move and rotate. From this, a support arm 14 runs, as shown, to a residue holder 15, which has a first handle 16 connected to the support arm 14 and a second one directly on a transparent plastic

has a second handle 19 attached to the existing base plate 21. A removable pressure plate 17 is attached to the base plate 21. This pressure plate serves to hold the material to be cut during the cutting process and 2b is roughened on the side facing the knife 4, preferably grooved or provided with points, in order to better hold the material to be cut during the cutting process.

Between the brackets 11, below the guide rod 12, a support rod 23 is attached with an abutment 24, which has a bearing surface, which can only be seen on the straight edge 25 in Fig. 1, for engagement with a flattened area 26 on the guide sleeve 13. This engagement takes place so that the residue holder 15 can no longer be pivoted up around the guide rod 12 as an axis when, as the cutting process progresses, there is only a relatively short residual piece of the cutting material between the residue holder

15 and the circular blade 4 or the cover 6 and the residue holder 15 is guided further on the handle 16 in the direction of the circular blade 4.

The above-described structure of the slicing machine is arranged on a base frame 28, which is shown together with other components of the machine 1 in Fig. 2 and 3.

The circular knife 4 is arranged with a gear motor 30 on the base frame 28 resting on feet 29 and the carriage 7 is mounted so as to be movable longitudinally and transversely, as is indicated in Fig. 1 by corresponding double arrows 31, 32.

The guide wall 2 is attached to its underside on a holder 33 which can be adjusted in the direction of the double arrow 31 by means of an actuating device 34 in the form of a handwheel with a scale (not visible in the drawing) for the purpose of setting the cutting width. In the zero position, which corresponds to a cutting width of ^zero , the front of the guide wall 2 is flush with the cutting edge 4a or with the front of the circular knife 4, or even protrudes, as in Fig.

shown, slightly beyond the cutting edge 4a and the front of the circular knife 4.

To form a locking mechanism between the guide wall 2 and the hood 5 in the section thereof near the tongue-shaped section 3 of the guide wall 2, a latch generally designated 35 is provided, which in the first embodiment according to Fig. 1 to 4 is designed as a pawl 36. The pawl 36 is rotatably mounted on an axis 37 attached to the side of the hood 5 in the area shown in the drawing between an outer collar 38 and a spacer ring 39. By means of a Bowden cable 41 attached to the pawl end 40 and a coil spring associated with the Bowden cable 41

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42, which is supported between the pawl end 40 and a stationary stop 43, the pawl 36 is adjustable between a locking position shown in Fig. 1 to 4 with solid lines and a rest position shown in Fig. 2 with dashed lines. In the locking position, the pawl 36 engages behind the tongue-shaped section 3 of the guide wall 2 with a support block 44 angled at its front end, as can be seen very clearly in the drawing. When pivoted upwards from the locking position to the rest position, the pawl 36 with the support block 44 at the front end is out of engagement with the support wall 2, so that it can be freely adjusted from the zero position. The pivoting direction of the pawl 36 when adjusting from the locking position to the rest position is indicated by an arrow 45 in Fig. 1 and 2.

The Bowden cable 41 is, as the arrow 46 in Fig. 2 shows, guided laterally past the circular blade 4 and through the machine 1 to the actuator of the actuating device 34 for the guide wall 2 (not shown). The Bowden cable 41 is connected to this actuator in such a way that it is relieved and consequently the locking pawl Ti is pivoted from the rest position into the locked position under the action of the coil spring when the guide wall 2 and thus also its actuator and its actuating device 34 reach the zero position. Immediately before the guide wall 2 is adjusted from the zero position by means of the actuating device, the Bowden cable 41 is again subjected to tension by the coupling with the actuator, so that the locking pawl 36 leaves its locked position and returns to the rest position.

It has already been explained in detail at the beginning that by engaging the tongue-shaped section 3 of the guide wall 2 by the latch 36 in its locking position, an effective support of the section 3 of the "FiHi-

guide wall 2 is achieved; so that the guide wall 2 can be easily subjected to strong hand pressure when wiping or brushing, without it being bent back in a resilient manner, particularly in the upper area.

!> can result from the undesirable shape ¹ being created by the backward movement, such that a gap appears between the left hand of the guide and the cutting edge 4a of the circular knife 4, such that the cutting edge 4a can be touched there with the left and right thumb and there is ^no risk of injury.

Br?i. In the second embodiment shown in Fig. 5 and 6, the latch 35 is designed as a bolt 47 with a tapered support part 48 in the front section and with a bearing pin 49 which is mounted in a bearing bore 50 in the hood 5 so that it can be moved longitudinally. The bolt 47 can be adjusted between a locking position, which is shown in Fig. 5 and 6, ^and a rest position (see arrow 53) by means of a Bowden cable 51 and with the support of a coil spring 52. The Bowden cable 51 is inserted into a central blind hole 54 in the bearing pin 49 of the bolt 47 and is secured and held there by means of a screw 55 or by a spring split pin or by soldering or the like. From the bolt 47, the Bowden cable 51 is deflected downwards through bores 56, 57 in the hood 5 via a pin 58. and from there under a cover 59 downwards (see arrow 60) and through the base frame 28 to the

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3Ü connected in the same way as explained in the description of the first embodiment.

The way in which the locking mechanism between the guide wall 2 and the hood 5 works by means of the bolt 47 is in principle the same as that of the latch 35 being designed as a locking pawl 36. In both cases, the latch is automatically released, namely without any further action by the operator, when the guide wall 2 reaches its zero position.

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5 is moved from the rest position into the locking position, in which the support block 44 or the support part 48 of the latch 35 engages behind the tongue-shaped section 3 of the guide wall 2 and in this way safely supports it even against strong hand pressure when cleaning the front of the guide wall 2. Immediately before the guide wall 2 leaves the zero position, at the start of the rotary movement of the actuating device 34, the Bowden cable 41 or 51 is automatically actuated by the actuator of the guide wall 2, so that the latch 35 returns to the rest position, which in the second embodiment means that the bearing pin 49 is pulled into the rear part of the bearing bore 50 so that the support part 48 releases the tongue-shaped section 3 of the guide wall 2.

The design of the bolt 35 as a bolt 47 in a bearing bore 50 has the advantage of a concealed and protected construction without protruding parts. This is because the support part 48 of the bolt 47 can also be completely accommodated in the bearing bore 50 in the rest position if the bearing bore 50 is of a corresponding length.

The pawl solution according to the first embodiment is very easy to implement and can also be easily retrofitted to existing machines because the pivot bearing of the pawl 36 on the hood 5 is very easy to implement. The exposed pawl 36 can be easily cleaned and its functionality can be safely checked.

Regardless of whether one of the embodiments described in detail or other embodiments are used to create a lock between the guide wall 2 and the hood 5, it must be ensured by appropriate construction and dimensioning that the guide wall 2 remains securely supported even under the effect of strong pressure and cannot be bent back in the blade area.

Claims (1)

Protection claims: 1. Slicing machine with a circular blade, which is partially covered along its circumference with a hood, and with a guide wall adjoining the circular blade in the cutting area, which in an upright position can be moved from a zero position, in which its edge closest to the blade is essentially aligned with the cutting edge of the circular blade, to is parallel adjustable. characterized in that the guide wall (2) can be supported in the zero position by means of a latch (35) on the hood (5) of the circular knife (4) in such a way that at least the edge of the guide wall (2) closest to the knife cannot be pushed behind the cutting plane. 2. Slicer according to claim 1, characterized in that a latch (35) is mounted on the hood (5) which can be adjusted from a rest position to a locked position and which, when the guide wall (2) is in the zero position, can be adjusted from the rest position to the locked position in which the latch (35) engages behind the guide wall (2) in a supporting manner. 2 ' Slicing machine according to claim 1 or 2, characterized in that the locking bar (35) is arranged in the region of the upper end of the hood (5) which overlaps the circular cutter (4) in such a way that in the locking position it engages the adjacent, tongue-shaped section (3) of the ^guide wall (2) ^. 4. Cutting machine according to claim 1, characterized in that the latch (35) is designed as a locking pawl (3G) and is mounted on the hood (5) so as to be rotatable or pivotable between the rest position and the locking position. 5. Step cutting machine according to claim 4, characterized in that the locking pin(s) (36) is mounted on the outside of the hood (5) or in a recess on the top of the hood (5). 6. Slicing machine according to claim 1, 2 or 3. characterized in that the bolt (35) is mounted so as to be displaceable between the rest position and the locking position. 7. Slicing machine according to claim 6, characterized in that the latch (35) is designed as a bolt (47), rod, plate or the like which is mounted so as to be displaceable in the longitudinal direction. S. Slicing machine according to one or more of the preceding claims, characterized by a mechanical or electrical locking of the actuator of the guide wall (2) in the locking position of the bolt (35). 9. Slicing machine according to one or more of the preceding claims, characterized in that the latch (35) is manually adjustable between the rest position and the locking position. 10. Slicing machine according to claim 9, characterized in that the latch (35) can be secured in the rest position and in the locking position, for example by a releasable locking or magnetic lock. 11. Slicing machine according to one or more of claims 1 to 8, characterized in that the latch (35) is electrically adjustable, for example, by means of a relay or by means of a stepper motor between the rest position and the locking position. 12. Slicing machine according to one or more of claims 1 to 8, characterized in that the latch (35) is adjustable by means of a Bowden cable (41; 51) which is guided to an actuating device. 13. Slicing machine according to one or more of claims 1 to 8 and 11 and 12, characterized by a coupling of the actuation of the actuator of the guide wall (2) with the actuating device of the bolt (35) such that an adjustment of the guide wall (2) to the zero position causes an adjustment of the bolt (35) to the locked position and a departure from the zero position by the guide wall (2) causes a timely return of the bolt (35) to the rest position. 14. Slicer according to claim 13, characterized in that in the case of a Bowden cable adjustment of the latch (35), the Bowden cable (41; 51) extends from the latch (35) through the machine (1) to I · ■ ■ to the actuator or the actuating device (34) of the guide wall (2) and is coupled thereto. Ρ ...