EP3088146A1 - Cutting machine with weighing device - Google Patents

Abstract

It is proposed a cutting machine (1) for separating slices of rope-shaped food with a weighing device (2). The cutting machine has a machine housing (11), which comprises a motor-driven cutting blade (16) and a weighing device (2). The weighing device has a load plate (22) arranged in a storage area (13) for depositing separated slices. The load cell (21) is movable together with the load plate (22) relative to the machine housing (11), so that a two-dimensional or three-dimensional storage image is made possible. In order to obtain a mechanically robust construction and a precise measurement result, it is provided that the weighing device (2) is displaceably connected to the machine housing (11) via a carrier device (24) and an electrical cable connection (26) of the weighing device in a receiving space (243 ) of a carrier of the carrier device (24) is guided.

Description

The invention relates to a cutting machine with weighing device according to the features of the preamble of claim 1.

From the EP 0 216 754 B1 Such a cutting machine with weighing device is known. This cutting machine has in the storage area on a support on which a load cell is slidably mounted. The load cell carries a tray, with the cut by the cutting machine discs are placed on this tray. Via a drive motor, the load cell can be moved to shingles the material to be cut. The electrical signal of the load cell is fed via a flexible cable into the machine housing. A disadvantage of this construction is that the flexible conduit can be damaged or accidentally squeezed, thereby adversely affecting the measurement result of the weighing cell.

The invention has for its object to provide a cutting machine for food with a weighing device, which is robust and preferably has a low overall height.

This object is achieved with a cutting machine according to the features of claim 1.

According to the invention, it is provided that the weighing device is slidably connected to the machine housing via a carrier device, which comprises at least one carrier, and an electrical cable connection of the weighing device is guided in a receiving space of the at least one carrier. The carrier device may comprise a carrier that supports the weighing device. The carrier device may also comprise a plurality of individual carriers, for example two carriers or three carriers, for supporting the weighing device.

It is provided that at least one carrier of the carrier device has a receiving space and the cable connection or one or more cables of the cable connection are guided in the receiving space. Preferably, the wall of the carrier surrounds the cable connection completely or at least to a large part of the cross section, preferably C-shaped or U-shaped.

The receiving space of the carrier protects the cable connection. This prevents that the cable connection between load cell and machine housing is subject to harmful mechanical influences, in particular that the cable connection can be kinked or crushed. The cable connection between the weighing device or the load cell and the machine housing has certain electrical properties. These For example, they include a defined electrical impedance or resistance. If the cable is kinked or squashed, this may affect the impedance and / or resistance of the cable. This means that squeezing or kinking of the cable, the signal transmission behavior of the cable connection changes and thereby the measurement result of the weighing device is adversely affected. In the invention, the cable connection is protected by the carrier against mechanical influences, in particular buckling or crushing, these disadvantages are prevented.

The cutting machine is intended for separating slices of rope-shaped food. It has a machine housing, which supports a drive motor and a driven by the drive motor rotating cutting blade. In the area of the cutting blade, i. H. spatially associated with the cutting blade, a storage area is provided with a arranged in the storage area weighing device. The weighing device comprises a load cell and a load plate connected to the load cell for depositing separated slices. The weighing device is mounted relative to the machine housing adjustable and / or displaceable. Preferably, the weighing device can be moved by a motor driven relative to the machine housing, in order to lay with the slices of the material to be cut two-dimensional or three-dimensional storage images.

Preferably, the carriers of the carrier device can be pushed out of the machine housing linearly by means of a motor or pulled into the machine housing. Together with a arranged in the storage area chain frame, the separated slices of the material to be cut transversely, it is possible to lay two-dimensional or three-dimensional storage images. About the weighing device, the weight of the cut slices can be determined and thus a desired target weight of a portion of the cut material to be determined exactly.

In order to achieve a good mechanical protection of the cable connection, it can preferably be provided that the receiving space is formed as arranged in a support recess or groove, which extends in the direction of the axial extent of the carrier and receives an electrical cable of the cable connection.

In one embodiment it can be provided that a carrier is designed as a hollow profile and the receiving space extends in a cavity in the interior of the carrier and receives an electrical cable of the cable connection, wherein the electrical cable is enclosed by a wall of the carrier, preferably at least partially completely from the support wall is enclosed. The carrier can be made for example from a prefabricated profile by cutting to length. The use of prefabricated profiles or semi-finished products results in a reduction of the production costs and thus a cost reduction.

In one embodiment, it can also be provided that a carrier is designed as a tubular carrier and the electrical cable runs in the interior of the tubular carrier. As a tubular carrier, a carrier may be used which has a round, in particular circular or elliptical cross-section. Within this cross section, a cavity is arranged, which can serve as a receiving space for the cable. Likewise, a carrier with a polygonal, for example a rectangular or square cross-section can be used, which has in its interior a cavity for receiving the cable connection.

In order to increase the reliability of the weighing device, it can be provided that the cable has one or more electrical conductors, which consist of a stranded wire. A strand has a plurality of thin individual wires whose diameter is in each case small in relation to the diameter of the electrical conductor. Such a cable can be bent in particular in comparison to a cable with solid individual conductors, without a cable break is to be feared.

In one embodiment, it is preferably provided that the weighing device is mounted displaceably on the carrier device relative to the machine housing.

In order to obtain a compact design, it can be provided that the weighing cell of the weighing device is arranged laterally next to the machine housing. For example, the load cell may be arranged on an end face or an end face of the machine housing. As a result, a lower height is achieved because no additional height is required by this arrangement of the load cell.

In order to achieve a mechanically stable mounting of the weighing device in a structural design, it can be provided that the at least one carrier engages through a wall of the machine housing, wherein it is preferably provided that the wall is a plain bearing for the at least one carrier having. In this case, the at least one carrier can be inserted and / or pulled out into the machine housing.

In order to make the cutting machine resistant to mechanical influences and to contamination, it can be provided that the sliding bearing arranged in a wall of the machine housing has a seal, in particular a sliding seal. The sliding bearing may have a seal integrated into the sliding bearing. For example, the sliding bearing may be formed as a plastic bushing, which has a low tolerance and the carrier comprises free of play and so creates a seal between the carrier and the plain bearing.

In order to achieve a structurally advantageous cable guide, it can be provided that the at least one carrier has a rounding in the region of the weighing cell and / or is rounded off in order to receive a cable loop. The carrier may for example be bent or have a round section. Alternatively, an armored hose can be provided, which is connected to the carrier and in the interior of the cable connection is performed. The armored hose is then laid, for example, with a rounding, so that the cable loop of the cable connection is received in its interior.

In one embodiment, it can preferably be provided that the load cell is designed as an analog load cell and the cable of the cable connection transmits an analog measurement signal. The load cell can be designed, for example, as a load cell with strain gauges or strain gauges. The strain gauge sensors are preferably connected as a Wheatstone bridge. The measuring signal of the strain gauges can then over a resistor network and connected to the cable connection. The resistor network is used to match the Wheatstone bridge. It may have one or more temperature-dependent resistors which compensate for a temperature dependence of the measurement signal. It can further be provided that the measuring cell has a temperature sensor whose signal is transmitted via the cable connection, preferably via a separate conductor of the cable connection, and is used in an evaluation device for temperature compensation of the measuring signal.

In order to enable a simple production or repair of a simple replacement of the load cell in one embodiment, it can be provided that the load cell has a detachable plug connection for connecting a cable of the cable connection. The connector may be formed for example as a waterproof plug or have a waterproof PG gland.

In order to obtain a mechanically stable hold of the weighing device, it can be provided that the machine housing has a first carrier and a second carrier for holding the weighing device, wherein at least one of the two carriers has a receiving space for receiving the electrical cable connection of the weighing device. The two carriers are in particular spaced from each other and thus allow a storage of the load cell, which is insensitive to lateral forces or disturbing moments.

In one embodiment, it can be provided that the machine housing has a first carrier for holding the weighing device and a second carrier for holding the cable, wherein the second carrier has a Receiving space for receiving the electrical cable connection of the weighing device has. Preferably, it is provided that, in order to avoid jamming, the second carrier does not receive any moments of the load cell. He is only guided freely displaceable in the machine housing via a spherical plain bearing. A spherical plain bearing is a sliding bearing which is rotatable so as not to generate any counterforce when the force is transmitted at an angle or at an angle. This avoids that jam against each other during retraction or extension of the support device, the carrier.

In order to achieve a good moment support of the weighing device can be provided in one embodiment that the carrier device has a supported on a roller on the machine housing torque support. The torque support may be formed as a transverse to a support strut, the end of which covers a roller on a running surface of the machine housing. The roller can either be stored on the machine housing, d. H. be stored fixed to the housing, or be stored on the strut.

In one embodiment, it is preferably provided that the machine housing has a space for receiving a drive device, and the drive device retracts a carrier and / or all the carriers in the machine housing or pushes out of the machine housing. The drive device may comprise a stepper motor or a server motor, which allows a tailor-made adjustment of the carrier. As a result, for example, a particularly precise depositing image of the food slices separated by the cutting machine is made possible.

It can be provided that the drive device drives the first carrier and / or the second carrier. By the drive device drives both carriers, for example, heavy cut material or large quantities of cutting material can be handled easily. If the drive device drives only one carrier and, for example, the second carrier is carried along in parallel, this enables a cost-effective production which is suitable for smaller cutting machines.

In order to enable easy cleaning of the cutting machine, it can be provided that the load plate is detachable from the load cell without tools. The load plate is in particular formed of a metal, for example aluminum or a steel sheet. In practical cutting operation, the load plate is contaminated by the cutting material and must therefore be cleaned more often. For this purpose, the load plate can be removed and cleaned without tools from the weighing device. After the cleaning process, the cleaning plate can then be connected again without tools to the weighing device and is ready for the next cutting operation.

In order to achieve an aesthetically pleasing storage image, it can be provided that the cutting machine has a control device for controlling the drive device, wherein the control device controls the drive device for depositing two-dimensional or three-dimensional storage figures. As storage figures can be adjusted for example via the control device, whether the separated food slices are stored as a circle or as a stack or as an ellipse. Depending on the setting or programming of the control device, the individual discs of the filing figures can also partially overlap, so that shingled or partially stacked filing figures are possible.

An application of the cutting machine according to the invention can be carried out in particular in fresh food or in the industrial processing of food. For example, the slicer can be used in the processing or sale of sausage products or cheese products.

Further embodiments and examples of the invention are shown in the figures and described below.

Fig. 1

eine schematische Seitenansicht einer erfindungsgemäßen Schneidemaschine;

Fig. 2:

eine schematische Ansicht der Schneidemaschine aus der Sicht eines Bedieners;

Fig. 3:

eine schematische Darstellung der Wiegevorrichtung aus Fig. 2;

Fig. 4:

eine vergrößerte Seitenansicht der Wiegevorrichtung;

Fig. 5:

eine Schnittdarstellung durch das Maschinengehäuse der Schneidemaschine.

Showing:

Fig. 1

a schematic side view of a cutting machine according to the invention;

Fig. 2:

a schematic view of the cutting machine from the perspective of an operator;

3:

a schematic representation of the weighing device Fig. 2 ;

4:

an enlarged side view of the weighing device;

Fig. 5:

a sectional view through the machine housing of the cutting machine.

The in the FIGS. 1 to 5 Cutting machine 1 shown has a machine housing 11, which comprises a substantially square base and an upwardly projecting drive tower 12. In the drive tower 12, an unillustrated drive motor is added. The drive motor drives a circular rotating cutting blade 16, which in a cutting plane A, the in Fig. 2 is shown, rotates. At the top of the drive tower 12, a display screen 4 is arranged laterally. The display screen 4 serves to display the weight signals measured by a weighing device 2. The machine housing is sturdy and made of an aluminum alloy in a casting process.

The cutting edge of the cutting blade 16 is covered by a knife protection ring 17. The knife guard ring 17 surrounds the cutting edge of the cutting knife C-shaped. In the front region of the cutting edge of the cutting blade 16, a stop plate 18 is arranged, which in Fig. 1 and Fig. 2 is shown. Out Fig. 2 it can be seen that the stop plate 18 is parallel to the cutting plane A. The stop plate 18 can be adjusted laterally to adjust the thickness of the separated food slices. The food to be cut are placed on a carriage 19, which is movable parallel to the cutting plane. The carriage 19 can be driven manually or driven by a motorized carriage drive.

Further, the machine housing 11 comprises a arranged in a storage area 13 chain frame 14 and a beater 15, which is driven by a Abschlägermotor 151. The separated from a cutting material on the cutting blade 16 discs are transferred to the chain frame 14 and transported there in the transverse direction. The Abschläger 15 then separates the discs from the chain frame and spends them in the Storage area 13 on the top of the tray tray 22 and the load plate 22, such as in Fig. 1 is shown.

The storage tray 22 is connected to a load cell 21 via a coupling device 23. The load cell 21, like the tray tray 22, is part of a weighing device 2 which, as in FIG Fig. 1 seen, is arranged on the front end side of the machine housing 11. The weighing device 2 is connected to the machine housing 11 via an upper bracket 241 and a lower bracket 242. These two carriers support a housing 25, which encloses the load cell 21 and protects against mechanical influences.

The Fig. 3 shows an enlarged view of the weighing device 2. The coupling device 23 is disposed in the load introduction region 21 a of the load cell 21. At the top of the coupling device 23, the load plate 22 is supported by this. The coupling device 23 represents the sole support of the load plate 22, so that the entire weight of introduced on the load plate 22 items to be cut directly into the load introduction region 21 a of the load cell 21 is initiated. The load cell 21 has a centrally arranged weakening area. In the attenuation range strain gauges are arranged, for example, applied to the bending bar of the load cell or glued to it. These measure a weight-based deformation of the load cell 21 and provide an electrical measurement signal. The measuring signal of the load cell 21 is guided via an electrical cable connection 26 into the machine housing 11 of the cutting machine 1.

The cable connection 26 is guided in a cable channel 262, which is connected to the lower carrier 242. The carrier 242 has a receiving space 243, which forms a cable channel for the cable connection 26. In the area of the load cell 21, the carrier 242 or the cable channel 262 is formed rounded. The radius of this rounding is designed to ensure that the cable of the cable connection 26 is not damaged by the radius.

The upper carrier 241 has a moment support 27. This torque support 27 comprises a strut extending transversely to the carrier 241, the end remote from the carrier being supported on the machine housing 11 via a roller 271.

In the side view of the weighing device 2, which in Fig. 4 4, it can be seen that the weighing device 2 is connected to the machine housing 11 via the upper carrier 241. The carrier pass through the wall of the machine housing 11, wherein at the location of the passage through the wall, a sliding bearing 111 is arranged, which forms a sliding bearing for the carrier on the one hand and on the other hand has a sliding seal to seal the opening through the machine housing 11.

In the illustration in Fig. 4 the coupling device 23 is shown in the upper area. The coupling device 23 has a pivot bearing 231 which supports the load plate 22 in a pivotable manner. To remove the load plate without tools, the pivot bearing 231 is open on one side. The opening has a clear width which is less than the diameter of the pivot bearing 231. The load plate 22 has a pivot axis 232 which has a circular cross-section having two lateral constrictions. These lateral constrictions are dimensioned so that the thickness of the pivot axis in the region of the constriction of the clear width of the opening of the pivot bearing equivalent. Therefore, the pivot axis connected to the load plate 22 can be inserted or removed in a certain pivotal position through the opening of the pivot bearing 231. The contour of the pivot bearing 231 is keyhole-shaped in order to allow tool-free insertion and / or removal of the load plate 22 and to mechanically stably support the load plate.

In order to remove the load plate 22 from the weighing device, the load plate 22 is pivoted upward, i. spent in a vertical position. In this vertically extending position, the load plate can then be threaded out of the pivot bearing 231 and removed. For attaching the load plate this is again threaded in a vertical position in the pivot bearing 231, to which this has a funnel-shaped inlet slope to facilitate threading. After the pivot axis 232 is received in the pivot bearing 231, the load plate 22 is pivoted to a horizontal position and thereby fixed in the pivot bearing 231 without play.

The Fig. 5 shows a section through the machine housing 11 of the cutting machine 1. The machine housing 11 has in its interior a space 11a in which a connected to a control device 3 drive device 245 is added to adjust the weighing device 2 driven by a motor. The carrier 241 has in its end region on a tooth portion 244 which meshes with the output 245a of the drive motor 245. As in Fig. 5 is indicated by the double arrow, the weighing device 2 via the drive device 245 is adjustable. That is, the weighing device 2 can be extended by the distance S parallel to the machine housing or retracted into the machine housing. The control device 3 controls the drive motor 245, which serves as a servomotor or Stepper motor is designed to obtain a precise adjustment of the weighing device 2. Together with the weighing device 2, the load plate 22 is also moved so that a two-dimensional or three-dimensional storage image of the food slices separated by the cutting machine can be achieved by moving the weighing device 2.

It is also envisaged that the control device 3 additionally controls the chain frame 14 in order to determine the degree of transverse displacement of the separated food slices. In addition, the control device 3 controls the Abschläger 15 to allow the storage of the separated food slices as precisely as possible.

In order to make an adjustment of a desired filing figure, the control device 3 is connected to an input device via which the desired filing image is adjustable and / or programmable.

In order to prevent damage to the cable connection 26 or a cable break by the movement of the weighing device 2, it is provided that inside 11 a of the machine housing 11, as in Fig. 5 shown, the cable connection has a cable train 261. About this cable traction 261 a relative movement between the weighing device and the machine housing is compensated in the space 11a of the machine housing. The wall of the machine housing 11 encloses the space 11 a, ie this is mechanically protected.

Outside the machine housing 11, the cable connection 26 is completely protected by the cable channel 262 or the carrier 242 against mechanical influences and / or damage. How out Fig. 5 is apparent, are the both carriers 241 and 242 are spaced apart in the horizontal and vertical directions. This distance of the two carriers 241 and 242 allows a good moment support of the weighing device 2, so that it is securely mounted even at corner loads or uneven loads on the machine housing 11 and an accurate measurement result is possible.

LIST OF REFERENCE NUMBERS

1

cutting machine

11

machine housing

11a

space

111

bearings

12

motor tower

13

storage area

14

Track frame

15

sloughs

151

Abschlägermotor

16

cutting blade

17

Blade guard

18

stop plate

19

carriage

2

weighing device

21

load cell

21a

load transfer

22

load plate

23

clutch

231

pivot bearing

232

swivel axis

24

support device

241

carrier

242

carrier

243

accommodation space

244

tooth portion

245

engine

245a

output

25

casing

26

electric wire

261

trailing cable

262

Cabel Canal

27

torque support

271

caster

28

Spherical plain bearings

3

control device

4

display

A

cutting plane

S

route

Claims (15)

Cutting machine for separating slices of rope-shaped foodstuffs, comprising a machine housing (11) which supports a drive motor and a rotating cutting knife (16) driven by the drive motor, wherein in the area of the cutting knife a storage area (13) with a weighing device arranged in the storage area (13). 2) and the weighing device (2) comprises a load cell (21) and a load plate (22) connected to the load cell (21) for depositing separated pulleys and the weighing device (2) is adjustable relative to the machine housing (11) and / or or is slidably mounted,
characterized,
in that the weighing device (2) is displaceably connected to the machine housing (11) via a carrier device (24) which comprises at least one carrier (241, 242) and an electrical cable connection (26) of the weighing device in a receiving space (243) of the at least one carrier (241, 242) is guided. Cutting machine according to claim 1,
characterized,
in that the receiving space (243) is designed as a recess or groove arranged in a carrier (241, 242), which extends in the direction of the axial extent of the carrier and receives an electrical cable of the cable connection (26). Cutting machine according to claim 1 or 2,
characterized,
in that the at least one carrier (241, 242) is formed as a hollow profile and the receiving space (243) extends in a cavity in the interior of the carrier and receives an electrical cable of the cable connection (26), wherein the electrical cable from a wall of the carrier (243 ) is enclosed, preferably completely enclosed. Cutting machine according to one of claims 1 to 3,
characterized,
in that a carrier (241, 242) is designed as a tubular carrier and the electrical cable (26) runs in the interior of the tubular carrier. Cutting machine according to one of claims 1 to 4,
characterized,
in that the at least one support (241, 242) passes through a wall of the machine housing (11), wherein it is preferably provided that the wall has a sliding bearing and / or a seal (111) for the at least one support (241, 242). Cutting machine according to one of the preceding claims,
characterized,
in that the weighing device (2) is displaceably mounted on the carrier device (24) relative to the machine housing (11) and is preferably provided so that the at least one carrier (241, 242) can be inserted and / or extended into the machine housing (11). Cutting machine according to one of the preceding claims,
characterized,
in that the at least one carrier (241, 242) has a rounding in the region of the weighing cell (21) and / or is rounded off in order to receive a cable loop. Cutting machine according to one of the preceding claims,
characterized,
that the load cell (21) is designed as an analog load cell and the cable of the cable connection (26) transmits an analog measurement signal. Cutting machine according to one of the preceding claims,
characterized,
that the load cell (21) has a releasable connector for connecting a cable of the cable connection (62). Cutting machine according to one of the preceding claims,
characterized,
in that the machine housing (21) has a first carrier (241) and a second carrier (242) for holding the weighing device (2), wherein at least one of the two supports (241, 242) has a receiving space (243) for receiving the electrical cable connection (26) of the weighing device. Cutting machine according to one of claims 1 to 9,
characterized,
in that the machine housing (21) has a first carrier (241) for holding the weighing device (2) and a second carrier (242) for holding the cable, wherein the second carrier (242) has a receiving space (243) for receiving the electrical cable connection (243). 26) of the weighing device. Cutting machine according to claim 11,
characterized,
in that the carrier device (24) has a moment support (27) supported on the machine housing via a roller (271) and the second carrier (242) is freely slidably and / or extendably mounted in the machine housing (11), preferably via a spherical plain bearing (28 ) is stored. Cutting machine according to one of the preceding claims,
characterized,
in that the machine housing (11) has a construction space (11 a) for receiving a drive device (245), and the drive device (245) is drive-connected to a carrier and / or is drive-connected to all carriers (241, 242) and the carrier or carriers driven into the machine housing (11) retracts or pushes out of the machine housing. Cutting machine according to claim 13,
characterized,
in that the cutting machine has a control device (3) for controlling the drive device (245), wherein the control device (3) drives the drive device (245) for depositing two-dimensional or three-dimensional delivery figures. Cutting machine according to one of the preceding claims,
characterized,
that the load plate (22) without tools from the load cell (21) is formed detachable.

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