EP1260327B1 - Slicing machine with cutting device for film or paper - Google Patents

Description

The invention relates to a slicing machine having a slicing machine with depositing means comprising a chain frame of revolving chains with spikes, a racket for discharging sliced slices from the chains and a depositing area with a conveyor belt, the conveying paths of the chains and the conveyor belt forming an optionally in two axis directions overlapping slices can be pre-selected programmatically, and with a supply and cutting device provided in roll form carrier or packaging film made of plastic or paper in the depositing area and optionally with a welding station for welding cut stocked carrier film blanks with overlapping stored packaging film blanks. Such an arrangement is known from AT 385 939 B known.

From the EP 1 029 639 A2 is a laying device for films is known, which pulls these films from a roll, arching channel-shaped and pushes from the side via a conveyor belt in the depositing area of a slicing machine. Due to the channel-shaped shaping a dimensional stability is achieved, which allows the feed to the desired position. Once this position is reached, the projecting piece of film is cut off, it loses its dimensional stability and slides on the conveyor belt. This piece of film forms the carrier film for a sliced tart with the slicing machine. Furthermore, it is known to cut the films from a roll into desired blanks and to move these pieces of film with the aid of swivel arms in the depositing area of a slicing machine. Foam blanks can be used as carrier foils and after covering with a cold cut as cover foils. Also known are welding stations, which weld the foils, which include a cold cut, at the edges. Several layers of films and clippings can be welded so that individual portions can be removed, but the rest remains sealed. Cold slicing machines of this type can also be designed so that individual components, namely a feeding and cutting device for films, a slicing machine and a welding station as individual components in a straight line next to each other, that at the operating side of the slicing machine in front of the depositing area the feeding and cutting device stands while the welding station is positioned behind the chain frame of the depositing device.

Slicing arrangements of this kind are a decisive contribution to the sale of fresh goods, because the customer can convince himself that his order freshly cut and immediately automatically packed without hand touching and possibly welded. Of course, the known slicing arrangements are large and complex, although they have been designed for the sales room, so visible to the customer. The invention aims to make a slicing cutting arrangement of the type described above particularly compact, so that less floor space required and both the operation and the maintenance and cleaning is simplified. This is achieved by a slicing cutter assembly having the features of claim 1. The supply and cutting device, which preferably comprises a drivable storage with rollers for the film or paper roll and a synchronously driven deduction roller or a pair of withdrawal rollers, is subsequent to the depositing area in the longitudinal direction of the conveyor belt behind the chain frame on the opposite side of the depositing area for the supply of films or paper blanks under the chain frame through arranged in the provided before the chain frame depositing area, wherein a terminal strip is provided which detects the film web or the paper next to the cutting device along the cutting edge and synchronously with the withdrawal roller, the film web or the paper over the depositing area leads and after cutting by the cutting device and opening the terminal block in the depositing area on the conveyor belt throws, and preferably the welding station for welding a laid between two or more foil blanks cold cuts to the deposit area before the chain frame connects. A separate drive of the supply and cutting device can be dispensed with if a drive motor with a gearwheel is provided in the base housing of the slicing machine, with which or a further gearwheel both rolls of the storage of the film or paper roll and the take-off roll or a take-off roll pair can be driven synchronously , as well as the terminal block of the cutting device away and back along the deposit area are synchronously displaced. From the said gear is taken by engaging a pinion, the torque required for the film supply and for the film guide on the depositing position. The drive motor in the base housing of the slicing machine is controlled directly by the electronic program control of the depositing device. This triggers the drive of the chains on the chain frame with pre-programmed Förderweglängen and the drive of the conveyor belt gradually from time to time. As a result, sliced slices are overlapped in a row next to each other in a known manner and then placed in the next overlapping line on the cut film. This results in area-filling cuts with overlaps in two axis directions.

It is expedient if the rollers of the storage of the film or paper roll, the withdrawal roller or the pair of withdrawal rollers and the cutting device are combined in an assembly, which module can be suspended from the base housing behind the chain frame, wherein in the hooking position a gear of the assembly in the housing side driving gear engages. Since the terminal block both moves forward and back to capture the film at the interface and to guide over the depositing area, the drive motor drives the gear of the assembly as needed in both directions. It is provided a freewheel, which ensures that only the forward movement is transmitted to the rollers of the storage of the film or paper roll and to the draw-off roller or the withdrawal roller pair. It is also possible to provide a plurality of freewheels directly on the toothed wheels, which are connected via toothed belts with the aforementioned rollers. At this point, it should be noted that the terminal strip does not remove the film from the roll (this is the effect of the take-off rollers), but instead guides the film synchronously with the forward movement over the depositing position. A preferred embodiment is characterized in that the assembly comprises an electric drive for the cutting device, in particular a vertically movable along a guide surface cutter bar and that the electrical supply of the Drive via spring-loaded contacts, which rest in the suspension position of the module to mating contacts on the base housing. In order to avoid that plug connections between the modules must be made, the electrical connection causing contacts are provided. Low voltage is transmitted to drive the cutter bar.

A simple and at the same time extremely reliable construction provides that the clamping bar is provided on a guide linkage, in particular a toothed rack meshing with the gear wheel driven on the housing side, which can be moved in and out along the conveyor belt and the clamping rail comprises two jaws in the manner of pincers movable relative to each other, open or close when runners on control surfaces. The two tong-like opening and closing bars of the terminal strip can assume two stable positions, which are located on one side and the other side of a central position as over-center positions (toggle switch mechanism). By running drivers or control levers on control surfaces opens the terminal block and snaps over the cut edge of the film. The terminal strip runs with the feed of the film, without exerting a tensile force. In the desired position above the deposit area, the terminal strip opens (the adjacent bars fold apart in a V-shape) so that the foil falls onto the conveyor belt after separation. The film coming from the roll is fed over the film cutter so that it can be grasped by the returning clamping bar.

It is also expedient if the conveyor belt forms part of the welding station in the depositing, protruding from the base housing and is subsequently positioned as a separate assembly to the chain frame perpendicular to the conveying direction, wherein the drive motor for the conveyor belt in the base housing of the welding station and the electrical control Part of the electronic program control for the depositing system is provided in the slicing machine. The drive motor thus drives all conveyor belts, which were all assigned to the assembly of the welding station. Only a connection of the drive motor with the program control the slicing machine is required because the feed of the cut film must correspond to the line feed of the desired deposit image of a slicing and is effected by a short feed movement of the conveyor belt in the depositing area. The electronic program control in the slicing machine is responsible for the deposition of sliced slices in rows and columns with predeterminable distances (chain path length to the discharge point by the tips of the chains behind the fork-shaped beaters, as well as incremental feed of the conveyor belt). It also controls the motor for the film roll rollers, the take-off rollers, the clamping bar movement and the drive of the film cutting device. Also, the conveyor belts in the film welding station and the stroke of the lifting frame against the welding frame are switched on and off by the program control.

As mentioned, it is advantageous if lead through the welding station a plurality of adjacent conveyor belts and when a particular of individual parallel belt or the like formed conveyor belt is surrounded by a lifting frame with webs, wherein above the lifting frame an electrically heatable welding frame is provided, against which Lifting frame which raises between at least two foil blanks Schnittgutscheiben and the foil blanks welded edge.

With the slicing cutting arrangement according to the invention, therefore, cuts can be produced directly in the customer area and packaged in such a way that multilayer packs result. The intermediate film blanks for subdividing a cold cut into individual portions with the carrier and packaging film can be welded together at the edge. The result is a multi-chamber packaging, which allows the removal of a portion of the cold cuts, without opening the other chambers. These remain closed for freshness preservation purposes. It is accessed only when needed to the next chambers. During the construction of the possibly multi-layer cold cuts may lead to a shift of the layers or the films and the Schnittgutscheiben. This especially if the unit prepared for welding on the conveyor belt is transported to the welding station. In order to prevent mutual slippage of the layers, the invention provides that on the terminal block or on a terminal strip moving carriage pressure rollers, rollers or Andrückfinger for pressing foil blanks, such as packaging film blanks or optionally multiple Zwischenfolienzuschnitte to the cut clippings or the cold cuts are provided.

The coating of the sliced meat is compacted and fixed before being welded in. The sliced slices and the separating foils then stick together so tightly that they maintain their relative position relative to one another even during jerky conveying movements to the welding station. This compacting takes place here in conjunction with the terminal strip, with the help of which the film is drawn into the depositing area as a carrier film and then as an intermediate or release film and as a cover film for the cut grass clippings. Synchronous with the movement of the terminal block, which runs as a bar over the entire laying area, the pressing is done. It is expedient if the pressure rollers, rollers or Andrückfinger are connected to a lifting device, which lift the pressure rollers, rollers or Andrückfinger of the cold cuts during the advancement of the terminal block or the film web on the cold cuts and reversing the terminal strip, the pressure rollers, rollers or Andrückfinger on the deposited on the sliced foil blank for pressing the same lowers. So it should only be pressed and compacted when the clippings is covered by a release film, intermediate foil or at the end of the cover sheet. Direct contact of the rollers, rollers or fingers with the clippings is inventively avoided.

A special embodiment is characterized in that the lifting device comprises a rocker arm as an angle lever which od with a cam follower. Like. Runs on a lever end along a slotted guide and engages with its other end of the lever on an axis on the plurality of pressure rollers, rollers or Andrückfinger , optionally individually sprung, are stored, the pivoting of the angle lever, in particular via drivers, from the depositing area can be withdrawn. Finally, it is advantageous if on the axis of the pressure rollers, rollers or pressure fingers are provided on arms when the boom are mounted by means of a pivot bearing on the axis and biased by spring force against the depositing area of the cold cuts and when drivers are provided, the rotation the axle swing up the otherwise extended boom.

In the drawings, an embodiment of a slicing cutter according to the invention is shown schematically.

1 shows a side view in a schematic representation, FIG. 2 shows the individual components of FIG. 1, FIG. 3 shows a plan view of the slicing cutting arrangement according to FIG. 1, but with the welding frame removed, so that the lifting frame, which encloses the parallel belt drives via deflection rollers, is visible and Fig. 4 to 8 are schematic representations of a pressing device in conjunction with the terminal block in different positions of the back and forth over the depositing terminal strips.

According to FIGS. 1 and 3, a slicing machine 1 comprises a slicing carriage 2 for placing sliced goods 3 as a module of the slicing cutting arrangement. The slicing carriage 2 is moved manually or by a reversing electric drive (eg crank drive) along a stop plate 4 (for cutting thickness adjustment) against a rotating circular blade 5 and go back. Each cut sliced pulp reaches the tips of chains 6 of a chain frame 7. A programmable electronic controller 8 predefines the conveying path length of each sliced slice on the chains 6 of the chain frame 7 and also controls a drive motor 9 for a conveyor belt 10 stepwise, so that one of the Chains 6 engaging behind bat in the direction of arrow 11 discarded chopped slices can form a overlapping in two axis slices cold cuts. Of course, a simple stacking of sliced slices on top of each other is possible.

The cold cuts are placed on a foil or paper blank which is cut off from a film roll 12. For this purpose, a supply and cutting device 13 is designed as an assembly, which can be suspended from a base housing 14 of the slicing machine 1. By hooking gears 15 and 16 engage. The gear 15 is connected to a drive motor 17, which is switched by the controller 8 (direction of rotation and feed path lengths). The gear 16 transmits the torque to rollers 18 for supporting the film roll 12. Synchronously, the take-off rollers 19, also via the gear 16, each driven by means of toothed belt. Finally, a horizontally displaceable linkage is provided, such as here a rack 20 which is linearly displaceable by the drive motor 17 via the gears 15, 16, a toothed belt and a pinion 21 back and forth. With the rack 20, a terminal block 22 moves in a plane parallel to the laying surface on the conveyor belt 10. The terminal block 22 includes two beams with frictional zones; one beam is fixed, while the other is foldable towards and away from it (forceps action). A gate control provides that the beams open like a pliers when they come near the front edge or cutting edge of the film web 23, and as soon as the film passes between the bars, they close. Due to the synchronous drive, the bars which form the clamping strip guide the film web 23 over the depositing area, ie via the conveyor belt 10, where the bar opens onto the clamping bar as a result of the run-up of a bar-side driver (lever) on a control surface 24. At the same time, a cutting device 25 comes into action. It comprises a vertically movable in the vertical plane cutter bar, which is activated by a drive 26 also from the controller 8. The drive receives the voltage 26 via contact pieces, which are automatically adjacent to each other, as soon as the supply and cutting device 13 on or in the base housing 14 on or is mounted. It is always forwarded after the cutting of a piece of film a short piece of film, so that the approaching, opening and then closing terminal strip this can capture pincers.

The procedure provides preliminary storage of a foil blank on the conveyor belt 10. By pressing the conveyor belt 10 of the film blank is exactly on the for the Beginning of the depositing process of Schnittuttscheiben required position relative to the chain frame 7 is positioned. As is known, the cold cuts are overlapped in rows and columns on this foil blank. Finally, another film is taken from the terminal block 22 and passed over the cold cuts. The film feed effect the driven rollers 18 and 19. The terminal block 22 opens in the end position, and at the same time separated film falls on the cold cuts. This could be removed and sold immediately, especially if the film is merely used as paper. However, the slicing cutting arrangement according to the embodiment also provides a welding station 27. Part of this assembly is the conveyor belt 10, which protrudes from the welding station 27 in the depositing area. As already mentioned, the drive motor 9 for the conveyor belt 10 is accommodated in the welding station 27. A cable connection or an automatically occurring plug-in connection to a frame of the projecting conveyor belt 10 provide for the power supply, which is switched by the controller 8. The actual welding takes place above a plurality of parallel conveyor belt belts 28, which are surrounded by a rust-like lifting frame 29. The likewise activatable by the controller 8 lifting drive 30 lifts the lying between two film blanks slices on the belt 28 high and pushes the package against a fixed welding frame 31. This is electrically heated and welded the films, eg with a rectangular extending weld. It is also possible for several intermediate films to be automatically enclosed by the feeding and cutting device 25 during the course of a cold cut and to be welded together. After the welding process, a conveyor belt 32 serves to remove the welded pack into a refrigerator.

The hanging of the supply and cutting device 13 in a connecting piece 33 of the base housing 14 is shown in Fig. 1 and 2 only symbolically. Likewise, the gate control for opening and closing the terminal block 22 is shown in principle only. Thus, in a prototype concretely a parallel to the rack 20 guided, follower, long slide is provided, the front side switching from a stable Position of the lower beam (gripping position) on the other stable position (open position) triggers and runs at its foot inside the housing of the supply and cutting device 25 against a sprung stop, which retains the case switching slider, but a short further movement of the rack 20th allows. This is useful because yes at the same time with their feed drive and the withdrawal rollers 19 and the rollers 18 are driven.

During the said further movement, the film web 23 remaining after separation is pushed a little beyond the cutting device. This projection of the film corresponds to the residual path, ie the further movement of the rack with the terminal block 22 after the opening. The supernatant makes it possible that when retracting the terminal strip 22 the film web end can be grasped like a pliers by the clamping strip 22 or by the closing bars.

FIGS. 4 to 8 show the principal function of an additional pressing device in the various phases. As already shown in FIG. 1 and described in connection therewith, a clamping strip 22 runs over the entire depositing area, which is located on the conveyor belt 10. The clamping strip 22 engages the end of a film web 23 under the chain frame 7 and pulls the film 23, which rolls off the film roll 12, over the depositing area on the conveyor belt 10. The film 23 is cut off, it falls as a carrier film in the depositing position or as a separator - or intermediate foil on a number of Schnittgutscheiben or as a packaging film on the ready for welding ready layer pack (multipack).

In order to prevent mutual slippage or displacement of the layers of the cold cuts and the film pieces mentioned, run with the terminal block 22 a plurality of juxtaposed pressure rollers 40 with. These are freely rotatably mounted on a common axis 41. This axis 41 is received by one end of an angle lever 42 which is rotatably or hinged to the terminal block 22 or the carriage guide of the terminal block 22. The other end of the bellcrank carries a cam follower 43. A spring 44 causes the cam follower 43 is in contact with a slotted guide 45. Angle lever 42 and slide guide 45 may be provided on both sides of the package of pressure rollers 40.

If, starting from FIG. 4, the clamping strip 22 pulls the film web 23 over the depositing area (FIG. 5), then the angle lever 42 is pivoted upwards due to the design of the link guide 45. The pressure rollers 40 are thus initially without function and move at a distance over a cold cuts 46, which lies on a carrier foil 47. As soon as the clamping strip 22 has reached the end position, it opens and allows the cut-off foil sheet 48 (shown in dashed lines) to slide onto the sliced portion 46. In this position, a linear region of the slotted guide 45 ends and the angle lever 42 pivots under the force of the spring 44 until the pressure rollers 40 rest on the conveyor belt 10. When empty retracting the terminal block 22, the pressure rollers 40 come into action, which also individually mounted on jibs and thus can stand individually under spring pressure in the direction of the depositing area. They are spring loaded over the foil sheet 48, which may have the function of a release film in a multi-chamber package or a cover or packaging film in a single-layer sliced 46. As a result, the foil sheet 48 is pressed against the cold cuts 46, this is compacted and the entire package stabilized. Any air pockets are squeezed out. Figs. 6 and 7 show this process.

From Fig. 7 it is clear that the cam follower 43 a ramp surface in the course of the slide guide 45 approaches. Here, the cam follower 43 is still free as in FIGS. 6 and 7. Only on further retraction of the clamping strip (FIG. 8) does the cam follower 43 run onto the slide guide 45 and the pressure rollers 40 are lifted off the conveyor belt 10. Within the slotted guide 45, a switch tongue 49 is shown symbolically, the scan roller 43 (as shown in FIG. 8) can pass during the return of the terminal block 23, but prevents a lowering of the pressure rollers on the slicing during the flow (FIG. 4, 5).

At this point, it should be noted that there are many ways to the goal of a pressing, such as spring tongues or Leaf spring finders, during the return of the terminal block 22, so in contact with a resting on the cold cuts 46 48 film. FIGS. 4 to 8 show the principle in a simple manner.

Claims (12)

1. Slicing arrangement with a slicing machine (1) with a depositing means, comprising spiked chains (6) which rotate round a chain frame (7), a beater for ejecting discs of cut material from the chains (6) and a depositing region with a conveyor belt (10), the conveying paths of the chains (6) and the conveyor belt (10) being preselectable in a program-controlled manner for forming a slice which optionally overlaps in two axial directions, and comprising means (13) for the supply and slicing of backing and packaging film made of plastics material or paper and provided in roll form in the depositing region as well as optionally a bonding station (27) for bonding backing film blanks covered with cut material to packaging film blanks which are deposited in a covering manner, characterised in that the supplying and slicing means (13), which preferably comprises a drivable bearing with rollers (18) for the roll (12) of film or paper and a synchronously drivable take-off roller (19) or a pair thereof, following the depositing region is arranged after the chain frame (7) in the longitudinal direction of the conveyor belt (10) on the side remote from the depositing region for feeding through film or paper blanks under the chain frame (7) into the depositing region provided before the chain frame (7), a clamping strip (22) being provided to grasp the film web (23) or the paper close to the cutting device (25) along the cut edge and to guide the film web (23) or the paper synchronously with the take-off roller (19) over the depositing region and, after it has been cut to size by the cutting device (25) and after the clamping strip (22) has opened, to eject it onto the conveyor belt (10) into the depositing region, and preferably in that the bonding station (27) follows the depositing region before the chain frame (7) for encapsulating a slice laid between two or more film blanks.
2. Slicing arrangement according to claim 1, characterised in that in the base housing (14) of the slicing machine (1) there is provided a driving motor (17) with a toothed wheel (15), with which, or via a further toothed wheel (16), rollers (18) for bearing the roll (12) of film or paper and the take-off roller (19) or a pair thereof are synchronously drivable, and the clamping strip (22) is synchronously displaceable away from the cutting device (25) and back towards it along the depositing region.
3. Slicing arrangement according to claim 2, characterised in that the rollers (18) for bearing the roll (12) of film or paper, the take-off roller (19) or the pair thereof as well as the cutting device (25) are integrated in a module, which can be engaged on to the base housing (14) after the chain frame (7), a toothed wheel (16) of the module meshing, in the housing-side driving toothed wheel (15) in the engaged position.
4. Slicing arrangement according to claim 3, characterised in that the module comprises an electric drive (26) for the cutting device (25), in particular a cutter bar that is vertically displaceable along a guiding surface, and in that the drive (26) is electrically powered via spring contacts which rest against counter contacts on the base housing (14) when the module is in the engaged position.
5. Slicing arrangement according to any one of claims 1 to 4, characterised in that the clamping strip (22) is provided on a guiding rod system, in particular a toothed rack (20) which meshes with the toothed wheel (21) drivable on the housing side, which toothed rack can be driven in and out along the conveyor belt (10), and in that the clamping strip (22) comprises two bars which can be moved in a forceps-like manner relative to one another and which open or close when drivers run onto control surfaces (24).
6. Slicing arrangement according to any one of claims 1 to 5, characterised in that in the depositing region the conveyor belt (10) forms a part of the bonding station (27), projects from the basic housing thereof and, as a separate module on the chain frame (7), is subsequently positionable perpendicularly to the conveying direction thereof, the driving motor (9) for the conveyor belt (10) being provided in the basic housing of the bonding station (27) and the electric control being provided as a part of the electronic program control (8) for the depositing system in the slicing machine (1).
7. Slicing arrangement according to any one of claims 1 to 5, characterised in that the electronic program control (8) for driving the rotating chains (6) of the chain frame (7), for driving the toothed wheel (15) on the housing side and optionally also for the conveyor belt (10) is provided in the depositing region.
8. Slicing arrangement according to any one of claims 1 to 7, characterised in that a plurality of mutually adjoining conveyor belts (10, 28, 32) lead through the bonding station (27), and in that a conveyor belt (28), in particular a conveyor belt formed from individual parallel belts or the like, is surrounded by a travelling frame (29) with cross pieces, there being provided above the travelling frame (29) an electrically heatable bonding frame (31), against which the travelling frame (29) lifts the discs of cut material lying between at least two film blanks and bonds the film blanks at the edges.
9. Slicing arrangement according to any one of claims 1 to 8, characterised in that there are provided on the clamping strip (22) or on a carriage operating the clamping strip (22) pressure rollers (40), cylinders or pressing fingers for pressing film blanks (48), such as packaging film blanks or optionally a plurality of intermediate film blanks onto the sliced cut material or the slice (46).
10. Slicing arrangement according to claim 9, characterised in that the pressure rollers (40), cylinders or pressing fingers are connected to a lifting device which lifts the pressure rollers (40), cylinders or pressing fingers from the slice (46) when the clamping strip (22) or the film web (23) is advanced over the slice (46) and which, when the clamping strip (22) reciprocates, lowers the pressure rollers (40), cylinders or pressing fingers onto the film blank (48) deposited on the slice (46) and to be pressed.
11. Slicing arrangement according to either claim 9 or claim 10, characterised in that the lifting device comprises a tilting lever as a bell-crank lever (42) which runs along a crank guide (45) with a scanning roller (43) or the like at a lever end and which engages with its other lever end on a shaft (41) on which a plurality of pressure rollers (40), cylinders or pressing fingers are mounted, optionally individually spring-mounted, and which can be lifted from the depositing region, in particular by drivers, when the bell-crank lever (42) swings round.
12. Slicing arrangement according to either claim 9 or claim 10, characterised in that on the shaft (41) the pressure rollers (40), cylinders or pressing fingers are provided on cantilevers, in that the cantilevers are pivotably mounted on the shaft (41) by means of a pivot bearing and are pretensioned against the depositing region of the slice (46) by spring tension, and in that drivers are provided which swing the otherwise-released cantilevers upward when the shaft (41) is rotated.

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