WO2015086209A1 - Couteau pour une machine de remplissage, dispositif de coupe comprenant ledit couteau et kit de pièces comprenant ledit couteau - Google Patents
Couteau pour une machine de remplissage, dispositif de coupe comprenant ledit couteau et kit de pièces comprenant ledit couteau Download PDFInfo
- Publication number
- WO2015086209A1 WO2015086209A1 PCT/EP2014/072857 EP2014072857W WO2015086209A1 WO 2015086209 A1 WO2015086209 A1 WO 2015086209A1 EP 2014072857 W EP2014072857 W EP 2014072857W WO 2015086209 A1 WO2015086209 A1 WO 2015086209A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- knife
- profile
- teeth
- cam
- filling machine
- Prior art date
Links
Classifications
-
- 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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
-
- 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
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/16—Cam means
-
- 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
- B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
- B65B51/144—Closing paperboard containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
- B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
- B65B61/12—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by tearing along perforations or lines of weakness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously
-
- 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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/004—Cutting members therefor not rotating
-
- 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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B2220/00—Specific aspects of the packaging operation
- B65B2220/22—Interconnected packages concurrently produced from the same web, the packages not being separated from one another
Definitions
- the invention relates to a knife in a filling machine for food packages.
- the invention also relates to a cutting device comprising said knife, a kit of parts comprising said knife, and a method of operating a filling machine using said knife. Background of the invention
- a perforation knife is shown which is adapted for providing perforations with varying length, by controlling the depth of the perforation stroke.
- This knife is also modified in a central area, for creating more perforation in the area of a longitudinal seal of a package, see Fig. 12.
- a cutting edge of a typical perforation knife is shown that is used for making perforations.
- This knife has a continuous sharp edge which has gaps therein, which are typically created by grinding away portions at regular intervals.
- a cutting edge of another known perforation knife is shown, having sharpened tips which are pushed to a predetermined depth into the material to be perforated.
- the present invention provides a solution for providing liquid food packages, manufactured in a tube, with a perforation in a flexible and controllable way according to claim 1.
- a knife for a filling machine for manufacturing packages from a continuous tube, said knife comprising a serrated edge having a portion with teeth of a first profile being configured to either perforate or completely sever the transversal seal of said tube, depending on the maximum stroke of the knife during cutting.
- a serrated edge having a portion with teeth of a first profile being configured to either perforate or completely sever the transversal seal of said tube, depending on the maximum stroke of the knife during cutting.
- a portion of the serrated edge cutting a longitudinal seal of the tube is provided with teeth of a second profile, for completely severing the longitudinal seal during a perforation stroke.
- a cutting device comprising a knife according to one or several aspects of the invention.
- a knife comprising a knife according to at least one aspect of the invention
- a control device comprising a cam with a contact surface, and an actuator, said actuator being operable for moving the position of the contact surface of the cam for changing the maximum stroke of a cutting device of a filling machine.
- Figs. 1 and 2 show a top view of a knife according to one aspect of the invention
- Fig. 3 shows an enlarged view of a portion of the knife according to one aspect of the invention
- Fig. 4 shows an enlarged view of another portion of the knife according to one aspect of the invention
- Fig. 5 shows a cross-sectional view of a serrated edge according to one aspect of the invention
- Fig. 6 shows a knife and a tube of packaging material in their relative position prior to cutting, according to one aspect of the invention
- Figs. 7a and 7b show plan views of a control device for the knife according to one aspect of the invention
- Figs. 8 and 9 show sectional views of a cutting device, according to one aspect of the invention.
- Figs. 10 to 12 show prior art perforation knives.
- Figs. 1 and 2 show a knife 10 for a sealing jaw in a filling machine, such as Tetra Pak® Al, for producing liquid food packages, wherein the knife 10 is utilized to separate a continuous tube of packaging material and product into individual packages, in connection with the sealing of said tube, such as transversal sealing.
- the knife 10 is typically made from a stainless steel plate 11, indicated in Fig. 1, having a thickness t of about 0.75 mm.
- the plate 11 has an oblong rectangular shape, having a front long side 12, a back long side 13, and left 14 and right 15 short sides, as viewed from above. Machining of the plate 11 will form a knife body 21 with different features of the knife.
- the knife 10 is typically manufactured by grinding out the main profile of the knife, for forming the profile of the back long side 13, and for forming a cutting edge 22 in the front long side 12.
- the back long side 13 of the knife 10 is provided with projections, which serve to provide sufficient strength around first and second mounting holes 24, 25, while other areas at the back long side 13 have been ground away to reduce weight.
- the first mounting hole 24 is circular, while the second mounting hole 25 is elongated, allowing for manufacturing tolerances and also allows some thermal expansion of the knife 10.
- the front long side 12 is provided with a double-bevelled sharpened edge 22.
- Teeth of a first profile 22a of the cutting edge 22 are seen enlarged in Fig. 3.
- the distance between adjacent tips of the teeth, for the first profile 22a, is designated D, and the distance from a tip and an adjacent valley, measured in the travel direction of the knife, is designated H.
- the teeth of the first profile 22a are ground to have a distinct tip angle a when seen perpendicularly from the plane of the knife 10.
- Teeth of a second profile 22b of the sharpened edge 22 have a typical serrated edge, with wave-shaped design and a distance d between sharp tips of the teeth, see Fig. 4.
- the distance between the tip of the teeth and the adjacent valley, measured in the travel direction of the knife, is designated h for the second profile 22b.
- This profile 22a has entered the distance h into the packaging material, it begins to sever the packaging material completely.
- the second profile 22b is configured to cut the material, and not to perforate.
- the sharpened edge 22 comprises three areas having the second profile 22b, and two areas having the first profile 22a, where the second profile 22b is for cutting and the first profile 22a is for perforating.
- the first profile 22a is ground all the way into the valleys, such that they are also sharp, meaning that also the first profile 22a can be used for completely severing the packaging material, if the stroke is long enough.
- the distance d between the sharp tips in the second profile 22b is half of the distance D between the sharp tips of the first profile 22a.
- the sharp tips of both profiles 22a, 22b are all located along a common straight line, meaning that all teeth cut into the packaging material simultaneously.
- the sharpened edge can be seen in cross-section in Fig. 5.
- Both profiles 22a, 22b share the same bevel geometry, where the bevel angle ⁇ is about 40 degrees, and the edge is symmetrical around a symmetry line.
- the bevel angle ⁇ may be 35° ⁇ b ⁇ 45°.
- the second profile 22b of the knife is configured to always cut completely through the packaging material, and the first profile 22a can either perforate or cut, depending on the stroke of the knife 10.
- the knife 10 is hence configured to be used in a method for either making a perforated cut or a complete severing cut, depending on the stroke of the cut, and this method is used in a filling machine for making chains of packages of variable length, being interconnected by perforations.
- the knife 10 can be seen as it would be mounted in the filling machine (other parts of the sealing jaw being hidden for clarity reasons) in relation to a tube 40 of packaging material to be cut.
- the tube 40 has a transversal seal 41, being made in a previous operation by a separate sealing means, either in an upstream device or integrated with the device holding the knife 10.
- the tube 40 further has a longitudinal seal 42, extending along the entire tube 40 and being made continuously in an upstream device.
- the knife 10 is configured to have the second profile 22b of the sharpened edge 22 located at the position of the longitudinal seal 42 of the tube. This means that the area of the longitudinal seal, where the thickness is increased due to overlapping edges of packaging material, is always cut through completely, according to one aspect of the invention.
- the knife 10 is configured to have the profile 22a at either lateral end of the transversal seal 41, and this may facilitate tearing and may be wanted for some packaging material specifications.
- a control device 50 which can be used for varying the stroke of the knife 10.
- the control device 50 comprises a holder 51, a pneumatic cylinder 52, being pivotally attached to the holder 51, and a cam 53, being eccentrically journalled to a frame (not shown) of the filling machine around a pivot axis 54.
- the eccentric 54 is provided with a circular outer contact surface 55, intended to control the movement of the knife 10 during operation.
- the pneumatic cylinder 52 is retracted, and in Fig. 7b, the pneumatic cylinder is extended.
- the extended cylinder rotates the cam 53 around the pivot axis 54, such that the circular contact surface 55 is moved laterally, to the right in Fig.
- a typical cutting device 80 for operating a knife 10 in a filling machine.
- the cutting device 80 comprises a cam follower 81, having a cam surface 82, facing away from the location of the knife.
- the device further comprises a pusher 83, holding the knife 10.
- the pusher 83 has a pusher head 84 which is spring-biased against the cam follower 81.
- the cam 53 can be seen schematically in Fig. 8 in a relative position in which the cam follower 81 will make contact with the contact surface 55 of the cam 53.
- the sealing jaw 61 and cutting jaw 60, carrying the cutting device 80 will move downwardly while making a transversal seal of the packaging material tube, and will then pass the substantially stationary cam 53.
- the contact surface 55 will interact with the cam surface 82 of the cam follower 81, and will start pushing the pusher 83 and the knife 10 through the packaging material and into the slot of the sealing jaw 61.
- Fig. 9 the position of the cam follower 81 and the cam surface 82 is shown in dashed lines at the position of maximum stroke of the knife.
- the control device 50 By using the control device 50, as seen in Figs. 7a and 7b, it is possible to change the position of the cam 53 and its contact surface 55, such that the maximum stroke of the knife 10 is varied.
- two distinct strokes are envisioned which correspond to a) full severing of the transversal seal (maximum stroke) and b) a perforation stroke, in which the packaging material tube is not fully cut.
- the depth of the perforation stroke can, in another aspect of the invention, be varied to suit different packaging material specifications, and for thus ensuring a perforation that is easy to tear. This is achieved by varying the stroke of the pneumatic cylinder.
- the control device 50 is operated to place the cam 53 at a position corresponding to a perforation cut for five consecutive packages, and the cam 53 is then moved to the second position in which the knife 10 will completely sever the transversal seal. This will result in a chain of six packages being held together by five perforations in the middle of the transversal seals. If a chain is wanted with more or less packages, this is easily changed from the operator module.
- the knife 2 is shown having one central portion with teeth of the second profile 22b, a portion with teeth of the first profile 22a on either side thereof, and teeth of the second profile 22b towards the lateral ends of the knife 10.
- the knife 10 only has a central part with teeth of the first portion 22a, and one portion with teeth of the first profile 22a on either side thereof, i.e. not having teeth of the second profile 22b at the lateral ends of the knife 10.
- the cam 53 having a contact surface 55 can in another aspect of the invention be replaced by another cam which position can be changed by an actuator of a similar kind to the pneumatic cylinder.
- a kit of parts comprising the knife 10 and a control device 50 according to above can be fitted into existing filling machines, for introducing the technology as described above.
- the present invention also relates to a method of operating a filling machine, comprising the steps of a) adjusting a control device 50 to a first position, corresponding to a perforation cut, b) making a pre-determined number X of perforation cuts, c) adjusting the control device (50) to a second position, corresponding to a severing cut, d) making a severing cut, in order to create a chain of packages comprising X+l packages.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
La présente invention concerne un couteau (10) pour une machine de remplissage pour fabriquer des emballages à partir d'un tube continu (40). Ledit couteau (10) comprend un bord dentelé (22) ayant une partie avec des dents d'un second profil (22b) qui sont configurées pour sectionner complètement un joint transversal (41) dudit tube. Le bord dentelé comporte en outre une partie avec des dents d'un premier profil (22a) qui sont configurées de manière à perforer ou à sectionner complètement le joint d'étanchéité (41) dudit tube (50) en fonction de la course maximale du couteau (10) lors de la coupe. L'invention concerne également un dispositif de coupe comprenant un tel couteau (10), ainsi qu'un kit de pièces comprenant un couteau (10) et un dispositif de commande (50) destiné à être mis en œuvre dans des machines de remplissage existantes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1351467 | 2013-12-09 | ||
SE1351467-4 | 2013-12-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015086209A1 true WO2015086209A1 (fr) | 2015-06-18 |
Family
ID=51866136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/072857 WO2015086209A1 (fr) | 2013-12-09 | 2014-10-24 | Couteau pour une machine de remplissage, dispositif de coupe comprenant ledit couteau et kit de pièces comprenant ledit couteau |
Country Status (1)
Country | Link |
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WO (1) | WO2015086209A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106113142A (zh) * | 2016-08-10 | 2016-11-16 | 温州协远塑料包装有限公司 | 易撕线加工设备 |
CN109436478A (zh) * | 2018-12-29 | 2019-03-08 | 天津兴雅医疗设备科技有限公司 | 一种药品包装扎剪机构 |
CN109573207A (zh) * | 2018-12-29 | 2019-04-05 | 天津兴雅医疗设备科技有限公司 | 一种药品包装设备的扎剪机构刀片 |
EP4205925A1 (fr) * | 2021-12-30 | 2023-07-05 | Tetra Laval Holdings & Finance S.A. | Couteau, machine de remplissage et procédé de remplissage et de scellage d'un emballage |
US20240034505A1 (en) * | 2022-07-26 | 2024-02-01 | Frito-Lay North America, Inc. | Apparatus for Producing Perforated Strings of Separable Packages and Blade for Same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4315507C1 (de) * | 1993-05-10 | 1994-12-01 | Siemens Nixdorf Inf Syst | Schneideinrichtung zum Schneiden eines Druckträgers in einem Drucker |
DE10337864A1 (de) * | 2002-10-18 | 2004-05-13 | Tetra Laval Holdings & Finance S.A. | Vorrichtung zum Stanzen, Prägen und/oder Verformen flacher Elemente |
CN101108542A (zh) * | 2006-07-19 | 2008-01-23 | 利乐拉瓦尔集团及财务有限公司 | 包装层压材料的打孔装置及方法 |
-
2014
- 2014-10-24 WO PCT/EP2014/072857 patent/WO2015086209A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4315507C1 (de) * | 1993-05-10 | 1994-12-01 | Siemens Nixdorf Inf Syst | Schneideinrichtung zum Schneiden eines Druckträgers in einem Drucker |
DE10337864A1 (de) * | 2002-10-18 | 2004-05-13 | Tetra Laval Holdings & Finance S.A. | Vorrichtung zum Stanzen, Prägen und/oder Verformen flacher Elemente |
CN101108542A (zh) * | 2006-07-19 | 2008-01-23 | 利乐拉瓦尔集团及财务有限公司 | 包装层压材料的打孔装置及方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106113142A (zh) * | 2016-08-10 | 2016-11-16 | 温州协远塑料包装有限公司 | 易撕线加工设备 |
CN109436478A (zh) * | 2018-12-29 | 2019-03-08 | 天津兴雅医疗设备科技有限公司 | 一种药品包装扎剪机构 |
CN109573207A (zh) * | 2018-12-29 | 2019-04-05 | 天津兴雅医疗设备科技有限公司 | 一种药品包装设备的扎剪机构刀片 |
EP4205925A1 (fr) * | 2021-12-30 | 2023-07-05 | Tetra Laval Holdings & Finance S.A. | Couteau, machine de remplissage et procédé de remplissage et de scellage d'un emballage |
WO2023126175A1 (fr) * | 2021-12-30 | 2023-07-06 | Tetra Laval Holdings & Finance S.A. | Couteau, machine de remplissage et procédé de remplissage et de scellage d'un emballage |
US20240034505A1 (en) * | 2022-07-26 | 2024-02-01 | Frito-Lay North America, Inc. | Apparatus for Producing Perforated Strings of Separable Packages and Blade for Same |
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