EP3322561B1 - Pince à vide munie d'un cylindre - Google Patents

Pince à vide munie d'un cylindre Download PDF

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Publication number
EP3322561B1
EP3322561B1 EP16723350.1A EP16723350A EP3322561B1 EP 3322561 B1 EP3322561 B1 EP 3322561B1 EP 16723350 A EP16723350 A EP 16723350A EP 3322561 B1 EP3322561 B1 EP 3322561B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
gripper
negative pressure
cylinders
negative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16723350.1A
Other languages
German (de)
English (en)
Other versions
EP3322561A1 (fr
Inventor
Winfried Hörberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Germany GmbH
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GEA Food Solutions Germany GmbH
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Publication date
Application filed by GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Publication of EP3322561A1 publication Critical patent/EP3322561A1/fr
Application granted granted Critical
Publication of EP3322561B1 publication Critical patent/EP3322561B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/005—Vacuum work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0683—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form specially adapted for elongated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers

Definitions

  • the present invention relates to a gripper for use in a cutting machine, in particular a heavy duty cutting machine, which can be reversibly engaged with one end of a food product. Furthermore, the present invention relates to a method for slicing food products.
  • a gripper according to the preamble of claim 1 is for example from the WO 2014/135098 known.
  • Such grippers are known from the prior art, for example DE 100 24 913 , the EP 2 095 919 B1 , the EP 2 388 112 , the DE 10 2010 038 931 B4 , and the EP 2 535 299 B1 are known and used in high performance cutting machines in which food product, eg. As meat, sausage and / or cheese bars are cut into food slices used.
  • the gripper is engaged before or during the slicing of the food product with its end in order, for example, to guide this tail when cutting, stabilize and / or to dispose of an end piece that can not be further cut or not cut ,
  • the connection between the gripper and the food product is generated in each case by a negative pressure.
  • the grippers of the prior art have the disadvantage that they are elaborately constructed and / or generate much exhaust air. It was therefore the object of the present invention to provide a gripper which does not have the disadvantages of the prior art.
  • the present invention relates to a gripper for use in cutting machines, in particular a high-performance cutting machine, in which food products are cut into food slices.
  • This gripper is reversibly with a food product, for example, with one end, in engagement and fixed and / or performs this particular when slicing the last food slices of Food product. Furthermore, the gripper holds the remnant and leads it, for example, via a disposal chute, where it is detached from the gripper and falls into a disposal chute.
  • the gripper has a vacuum chamber, in which a negative pressure is applied, which holds the food product on the gripper.
  • this negative pressure is generated with a cylinder, said cylinder having a first and a second gas-side port, which are selectively, in particular alternately connected to the vacuum chamber. This allows a nearly continuous readjustment of the negative pressure in the vacuum chamber.
  • the cylinder has a piston which is moved along the cylinder and thereby generates a negative pressure.
  • the piston is driven.
  • the drive of the piston is controlled by a sensor, for example a pressure sensor, which measures the negative pressure in the pressure chamber and moves the piston as soon as the negative pressure falls below a desired value.
  • the drive reciprocates the piston between two endpoints.
  • At least one valve is provided at the connections, which opens and closes them and / or connects them to the environment or to the pressure chamber.
  • each gripper has at least two cylinders which generate the negative pressure and which are selectively connected, in particular alternately, to the vacuum chamber.
  • each cylinder has a first and a second gas-side connection.
  • These ports may each be connected to the vacuum chamber and / or to the environment.
  • these connections can be used either for generating the negative pressure in the vacuum chamber and / or for loading and / or venting a cylinder.
  • Each cylinder has a piston rod which moves within the cylinder along the central axis thereof. The movement generates a negative pressure at one of the gas-side connections and an overpressure at the other gas-side connection.
  • the cylinder separates the two ports so that different pressures can be applied to the ports within a cylinder.
  • each cylinder preferably has its own drive. With this drive, the cylinders can be driven uniformly but also at least temporarily differently. This makes it possible, for example, in a gripper with two cylinders, a continuous readjustment of the negative pressure, i. to generate a continuous flow of air between the vacuum chamber and the cylinder.
  • a plurality of cylinders have a common drive and consequently be driven uniformly.
  • the drive of each piston of each cylinder is controlled by a sensor, for example a pressure sensor, which measures the negative pressure in the pressure chamber and moves the piston as soon as the negative pressure falls below a desired value.
  • the drive reciprocates the piston between two endpoints.
  • At least one valve is provided at the ports of each cylinder, which opens and closes them and / or communicates with the environment or with the pressure chamber.
  • a port of a cylinder is fixedly connected to the vacuum chamber and a port fixed to the environment.
  • a further subject of the present invention is a method for slicing a food product, in which the end of the food product is brought into contact with a gripper before and / or during slicing, wherein a negative pressure is formed in a vacuum chamber between the end and the gripper, and the negative pressure is generated by a cylinder having two ports which are selectively, in particular, alternately brought into communication with the vacuum chamber.
  • a food product is sliced.
  • a knife in particular a rotating knife, separates food slices from one end, for example the front end of the food product from.
  • the opposite, rear end of the food product is brought into contact with the gripper before and / or during the slicing and connected to it in a positive and / or non-positive manner.
  • the frictional connection between the gripper and the food product takes place through a vacuum chamber, in which a negative pressure is applied, which holds the food product to the gripper.
  • the negative pressure is now generated by a cylinder having two ports, which are selectively, in particular, alternately brought into connection with the vacuum chamber.
  • a slicing apparatus has, for example, a controller and a plurality of valves which are controllable such that either the one or the other connection is connected to the negative pressure chamber on the gas side and thus the negative pressure in the negative pressure chamber can be maintained at a certain level.
  • the switching between the two terminals can be controlled, for example, by a sensor which detects the position of a piston within the cylinder.
  • the negative pressure in the vacuum chamber can be measured, and should it not be possible to keep this negative pressure to a certain level, the changeover can take place from one connection to the other.
  • Another object of the present invention is a gripper with at least two cylinders, wherein one cylinder drives the other cylinder.
  • the two piston rods of the cylinder are connected together.
  • Yet another object of the present invention is a method for slicing a food product in which the end of the food product is brought into contact with a gripper before and / or during slicing, wherein a negative pressure is formed in a vacuum chamber between the end and the gripper. in which the negative pressure of at least two cylinders is generated, which are selectively brought into connection with the vacuum chamber.
  • two cylinders are available, which are selectively connected, for example alternately, to the vacuum chamber become. This makes it possible to continuously suck an air flow from the vacuum chamber and thereby maintain a certain negative pressure in the vacuum chamber upright.
  • the cylinders are alternately brought into communication with the vacuum chamber.
  • Each cylinder has a piston which is moved along the central axis of the cylinder and thereby generates a negative pressure.
  • the piston is driven.
  • the drive of the piston is controlled by a sensor, for example a pressure sensor, which measures the negative pressure in the pressure chamber and moves the piston as soon as the negative pressure falls below a desired value.
  • the drive reciprocates the piston between two endpoints.
  • At least one valve is provided at the connections, which opens and closes them and / or connects them to the environment or to the pressure chamber.
  • a negative pressure is generated alternately with the cylinders.
  • a negative pressure is generated at least temporarily at the same time with the cylinders.
  • Each cylinder has a piston which has a drive which moves the piston along the longitudinal axis of the cylinder.
  • the pistons of the two cylinders are driven uniformly and / or differently.
  • FIG. 1 shows a slicing device 5.
  • the slicing device 5 has a cutting blade 11 which cuts a food product 2 in food slices 12.
  • each food product 2 with a conveying means 4, in this case two conveyor belts 4 is transported continuously or intermittently in the direction of the cutting plane 6 of the knife 11.
  • the lower conveyor belt 4 is at the same time a product support.
  • the cutting blade 11 is fixed to a rotating blade holder 3 and cooperates with a cutting edge 9 cutting, which is provided for example at the front end of a product support 4 and together define the cutting plane 6.
  • a so-called cutting gap is present, which should be as small as possible, but must be so large that the knife does not touch the cutting edge. This gap must be adjusted regularly.
  • the cutting edge must be aligned parallel to the knife.
  • a storage table 1 which is provided with means of transport, such as a conveyor belt or conveyor belt, on which they are each configured to a portion 14, here a stack.
  • the finished portions 14 are then removed from the cutting blade area and then packaged.
  • the slice thickness results from the feed distance of the food product between two cuts. At constant blade rotation speed, the regulation of the slice thickness is carried out via the feed rate of the food product.
  • the slicing device has per feed line 7 on a gripper 8, which engages the rear end 13 of the food product 2 before and / or during slicing and this during slicing, in particular towards the end of the slicing, stabilized and the tail, which can not be cut, disposed of.
  • Each gripper is preferably provided on a gripper carriage (not shown), which moves the grippers, in particular parallel to the feed direction of the food product, back and forth.
  • Each gripper is preferably at least temporarily individually driven.
  • the slicing device is provided in multiple tracks, i. H. that a plurality of food products 2 are cut open by a knife, in particular at least temporarily at the same time or at least temporarily sequentially.
  • the device has for each food product its own track 7, along which it is transported in the direction of the knife 11.
  • FIGS. 2 to 4 show an embodiment of the gripper 8 according to the invention, with which a food product 2 is taken.
  • the gripper has a
  • Vacuum chamber 20, which communicates with the rear end of the food product. Due to the negative pressure in the vacuum chamber, the food product is reversibly held on the gripper.
  • the gripper 8 has in the present case, two cylinders 17, 18, in each of which a piston rod 23, 24 is provided axially movable. Each cylinder has a first and second connection 25, 26, which are separated from each other by the respective piston 23, 24 on the gas side, so that different pressures can rest on the connections 25, 26.
  • the vacuum chamber 20 is fixedly connected to the port 26 of the cylinder 17 (see. FIG. 2 ) and the port 25 of the cylinder 18 is also connected to the vacuum chamber 20, the skilled person understands that in each connecting line, a valve is provided, with which this line can be shut off.
  • the gripper according to the invention operates as follows:
  • the air which is located on the opposite side of the cylinder 23, displaced and discharged, for example, to the environment.
  • the ports 25, 26 of the cylinder 18 are both connected to the environment in the present case. In the present example, the two cylinders are driven uniformly.
  • FIG. 3 shows the so-called switching position, in which the two cylinders are in their one end position.
  • the movement of the cylinder is reversed in the opposite direction, which in turn by the arrows 21, 22 in FIG. 4 is shown.
  • the connection 25 of the cylinder 18 is now connected to the vacuum chamber 20, so that the negative pressure in this vacuum chamber can be readjusted.
  • the air beyond the piston 24 is discharged through the port 26, as symbolized by the arrow 15, into the environment.
  • the two ports 25, 26 of the cylinder 17 are connected to the environment, so that through the port 25 air flows into the cylinder 17 and through the port 26 air flows out of the cylinder.
  • the two cylinders can also be driven independently of one another and can also perform different movements.
  • the piston 23 of the cylinder 17, the in FIG. 2 shown movement performs while the other piston 24 in the in FIG. 3 position shown.
  • the piston 24 is already out of his in FIG. 3 moved out position and performs the in FIG. 4 illustrated movement.
  • the terminal 26 of the cylinder 18 may be connected to the vacuum chamber, or that, based on FIG. 4 , Also, the terminal 25 of the cylinder 17 may be connected to the vacuum chamber. Assuming a corresponding valve circuit, the volume of both cylinders can thereby be used simultaneously to generate a higher volume flow out of the vacuum chamber and thereby achieve the desired negative pressure more quickly.
  • the slicing device or the gripper has a corresponding control or a corresponding sensor, which allows the optional connection of all ports 25, 26 with the vacuum chamber and / or with the environment.
  • the Figures 5 and 6 show a non-inventive embodiment of the gripper according to the invention, which in the present case, two cylinders 17, 18, whose piston rod are interconnected.
  • the cylinder 17 serves to generate the negative pressure in the vacuum chamber 20.
  • the cylinder 18 drives the cylinder 17 at.
  • the cylinder has a compressed air source 16, which drives the piston rod of the cylinder 18 and thus of the cylinder 17.
  • the negative pressure in the negative pressure chamber 20 is generated and maintained.
  • the vacuum port is exchanged as shown and the piston rods of the cylinders are moved in the opposite direction, as indicated by an arrow.
  • the negative pressure in the vacuum chamber 20 is generated.
  • FIG. 7 shows yet a non-inventive embodiment of the gripper.
  • the cylinders 17, 18 are not provided adjacent to each other but in series.
  • negative pressure in the vacuum chamber 20 is generated and the piston rod of the cylinder 18 drives the piston rod of the cylinder 17 at.
  • the optional additional, here right, double cylinder can be used as soon as the piston rod of the cylinder 17 has reached its top dead center.
  • the cylinder 17, here on the right side connected to the vacuum chamber 20 and there Negative pressure generated.
  • the person skilled in the art recognizes that, however, a double cylinder connected in series is sufficient. Otherwise, the double cylinder on the right works like the double cylinder on the left.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Meat, Egg Or Seafood Products (AREA)

Claims (11)

  1. Préhenseur (8) destiné à l'utilisation dans une découpeuse, notamment une découpeuse de grande puissance, lequel se trouve au moins temporairement et de manière réversible en prise avec l'extrémité (13) d'un produit alimentaire (2) avant et/ou pendant le découpage du produit alimentaire (2), le préhenseur possédant une chambre à dépression (20), dans laquelle est appliquée une dépression qui maintient le produit alimentaire contre le préhenseur, au moins deux cylindres (17, 18) générant la dépression et chaque cylindre (17, 18) possédant un premier et un deuxième raccord (25, 26) qui sont reliés sélectivement, notamment en alternance, à la chambre à dépression, caractérisé en ce que chaque cylindre (17, 18) possède un mécanisme d'entraînement propre.
  2. Préhenseur (8) selon la revendication 1, caractérisé en ce que les cylindres (17, 18) qui génèrent la dépression sont reliés sélectivement, notamment en alternance, à la chambre à dépression.
  3. Préhenseur selon la revendication 2, caractérisé en ce que chaque cylindre (17, 18) possède un premier et un deuxième raccord (25, 26).
  4. Préhenseur selon la revendication 1 ou 4, caractérisé en ce que la tige de piston (23, 24) de chaque cylindre (17, 18) sépare les raccords (25, 26) du cylindre (17, 18) respectif.
  5. Préhenseur selon l'une des revendications précédentes, caractérisé en ce qu'une borne (25, 26) est toujours reliée à la chambre à dépression (20) et une borne (25, 26) toujours à l'environnement.
  6. Procédé de découpage d'un produit alimentaire, avec lequel l'extrémité (13) du produit alimentaire, avant et/ou pendant le découpage, est amenée en contact avec un préhenseur (8) selon l'une des revendications précédentes, une dépression dans une chambre à dépression (20) étant formée entre l'extrémité (13) et le préhenseur (8), caractérisé en ce que la dépression est générée par au moins deux cylindres (17, 18), qui possèdent respectivement deux raccords (25, 26) qui sont mis en liaison sélectivement, notamment en alternance, avec la chambre à dépression.
  7. Procédé selon la revendication 6, caractérisé en ce que caractérisé en ce que les cylindres (17, 18) sont mis en liaison sélectivement avec la chambre à dépression.
  8. Procédé selon la revendication 7, caractérisé en ce que les cylindres (17, 18) sont mis en liaison en alternance avec la chambre à dépression (20).
  9. Procédé selon l'une des revendications 7 ou 8, caractérisé en ce qu'une dépression est générée en alternance avec les cylindres.
  10. Procédé selon l'une des revendications 7 ou 8, caractérisé en ce qu'une dépression est générée simultanément au moins temporairement avec les cylindres (17, 18).
  11. Procédé selon l'une des revendications 6 à 10, caractérisé en ce que les pistons (23, 24) des cylindres (17, 18) sont entraînés uniformément et/ou différemment.
EP16723350.1A 2015-07-16 2016-05-13 Pince à vide munie d'un cylindre Active EP3322561B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015213407 2015-07-16
DE102015216983 2015-09-04
PCT/EP2016/060831 WO2017008936A1 (fr) 2015-07-16 2016-05-13 Pince à vide munie d'un cylindre

Publications (2)

Publication Number Publication Date
EP3322561A1 EP3322561A1 (fr) 2018-05-23
EP3322561B1 true EP3322561B1 (fr) 2019-08-28

Family

ID=56014998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16723350.1A Active EP3322561B1 (fr) 2015-07-16 2016-05-13 Pince à vide munie d'un cylindre

Country Status (3)

Country Link
EP (1) EP3322561B1 (fr)
ES (1) ES2751012T3 (fr)
WO (1) WO2017008936A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797343A (en) * 1971-05-24 1974-03-19 Kraftco Corp Rapid slicing machine
DE102008011985B3 (de) * 2008-02-29 2009-07-02 Reifenhäuser, Uwe Verfahren zum Schneiden eines strangförmigen Lebensmittels sowie Schneidmaschine
CN104033358B (zh) * 2013-03-06 2016-07-27 科沃斯机器人有限公司 双腔双作用气泵及带有该气泵的擦玻璃机器人

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2751012T3 (es) 2020-03-30
WO2017008936A1 (fr) 2017-01-19
EP3322561A1 (fr) 2018-05-23

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