EP0198602B1 - Panel tightening device for wrap-around cartons - Google Patents
Panel tightening device for wrap-around cartons Download PDFInfo
- Publication number
- EP0198602B1 EP0198602B1 EP19860301916 EP86301916A EP0198602B1 EP 0198602 B1 EP0198602 B1 EP 0198602B1 EP 19860301916 EP19860301916 EP 19860301916 EP 86301916 A EP86301916 A EP 86301916A EP 0198602 B1 EP0198602 B1 EP 0198602B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam
- pressure bars
- another
- carton
- cam plate
- 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.)
- Expired
Links
- 238000012858 packaging process Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B65B49/00—Devices for folding or bending wrappers around contents
- B65B49/08—Reciprocating or oscillating folders
Definitions
- This invention relates to a panel tightening device for wrap-around type cartons and more particularly for bringing together the base panels of such a carton in order to ensure that those panels are securely locked after having been locked together by co-operating locking means provided by the panels.
- This invention is particularly suitable for use with a wrap-around carton in which interlocking of the base panels is caused by a locking tab furnished on one base panel to be engaged by relative sliding movement into a co-operating locking aperture provided by an adjacent base panel.
- the device according to this invention is adapted to be mounted in the carton feed path of a packaging machine downstream (in terms of carton movement through the machine) of a static guiding mechanism for interlocking the carton base panels.
- GB-A-1046121 relates to a carton closing machine according to the pre-characterizing part of claim 1 and including a carton clamping mechanism which comprises a pair of pressure bars mounted on support means for linear parallel movement towards and away from one another relative to a carton feed path. These pressure bars are positioned in a vertical position which corresponds to the lower part of the carton and they impart, when actuated in order to move towards one another, an inwardly directed force to the carton, so that juxtaposed base panels of the carton are moved towards one another.
- the mechanism further comprises control means to cause said linear parallel movement of said pressure bars.
- the object of the present invention is to provide an improved control means.
- the invention provides a panel tightening mechanism for causing the base panels of a wrap-around carton to be moved towards one another during a packaging process, the mechanism having a pair of pressure bars mounted on support means for linear parallel movement towards and away from one another relative to a carton feed path thereby to impart an inwardly directed force to the carton so that juxtaposed base panels of the carton are moved towards one another, said mechanism further comprising control means to cause said linear parallel movement of said pressure bars, characterized in that said control means comprises rotatable cam means having a cam track for each pressure bar and actuating means to rotate said cam thereby to cause said linear parallel movement of said pressure bars, in that said cam means comprises a pivotally mounted plate, in that said cam tracks comprise a pair of space slots formed in the cam plate, each of said pressure bars being slidingly mounted on guide means and having cam follower located in respective ones of the slots and in that said cam plate is disposed below said guide means, said guide means comprising a pair of parallel bars on which said pressure bars are transversely mounted.
- said cam slots may be shaped and orientated such that successive equal angular movements of said cam plate in the same direction cause the cam followers and thereby said pressure bars to be moved towards one another and relative to said slots by successive linear distance which are unequal.
- a mechanism 10 for tightening the base panels of a wrap-around type carton 'C' comprises a pivotal cam plate 12, cam plate actuator 32, 34 movable tightening arms 16, 18 incorporating pressure bars 20, 22 and guide rails 24,26.
- the pivotal cam plate 12 comprises a flat 'T' shaped plate which is pivotally mounted to a support bed 28 centrally of the arm of the 'T' by a vertical pivot pin 30. Pivotal movement is imparted to the cam plate by an actuator which, in this embodiment, comprises a pneumatic ram 32.
- the ram has an extensible and retractable arm 34 which has its free end pivotally connected to the leg of the 'T' cam plate by a pivotal connector 34.
- linear movement of the arm results in rotational movement of the cam plate relative to the support bed 28.
- the arm of the 'T' is formed with two parallel ovate slots 36 and 38 respectively, one on each side of the central pivot pin 30 and which are set at an inclined angle relative to the axis 'x-x' passing through both pivotal connections of the plate.
- a tightening assembly 40 is mounted atop the cam plate and comprises a pair of fixed parallel guide rails 24 and 26 located adjacent opposed ends of the cam plate.
- the tightening arms 16 and 18 are mounted transversely of the guide rails by bearings 42, 44 and 46, 48 disposed adjacent the ends of the respective arms.
- Tightening arms 16 is formed with a central downward extension piece 50 which carries a pivot pin 52.
- Pin 52 is located slidingly in slot 36 of the cam plate.
- tightening arm 18 is formed with a central downward extension piece 54 which carries a pivot pin 56. Pin 56 is slidingly located in a slot 38 of the cam plate.
- Pressure bar 20 is detachably mounted on the upper surface of tightening arm 16 and has an inwardly directed face 58 which is crenellated to form a series of spaced projecting flats 60.
- pressure bar 22 is detachably mounted on the upper surface of tightening arm 16 and has an inwardly directed face 62 which is crenallated to form a series of space projecting flats 64.
- the projecting flats 60 are in registry with the opposing projecting flats 64. It is envisaged that the inwardly directed faces of the pressure bars may be uninterrupted to form continuous flat faces.
- the tightening mechanism is located adjacent the downstream end of a packaging machine such that one pressure bar is disposed on either side of bottom guide plate 66 along which cartons 'C' are conveyed between a pair of side guides 65, 65a respectively.
- the pressure bars are positioned so as to apply an inwardly directed force to the carton at or adjacent the junction between the carton side wall panels and the base panels. This has the effect of causing the adjacent edges of the base panels to move towards one another so as to ensure that locking tabs provided on one base panel of the carton are correctly inserted into complementary locking apertues provided in an adjacent base panel.
- the flats of the pressure bars apply pressure to the carton at intervals therealong which coincide with a central part of a container side wall in each of the rows.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Closing Of Containers (AREA)
Description
- This invention relates to a panel tightening device for wrap-around type cartons and more particularly for bringing together the base panels of such a carton in order to ensure that those panels are securely locked after having been locked together by co-operating locking means provided by the panels.
- This invention is particularly suitable for use with a wrap-around carton in which interlocking of the base panels is caused by a locking tab furnished on one base panel to be engaged by relative sliding movement into a co-operating locking aperture provided by an adjacent base panel.
- The device according to this invention is adapted to be mounted in the carton feed path of a packaging machine downstream (in terms of carton movement through the machine) of a static guiding mechanism for interlocking the carton base panels.
- GB-A-1046121 relates to a carton closing machine according to the pre-characterizing part of claim 1 and including a carton clamping mechanism which comprises a pair of pressure bars mounted on support means for linear parallel movement towards and away from one another relative to a carton feed path. These pressure bars are positioned in a vertical position which corresponds to the lower part of the carton and they impart, when actuated in order to move towards one another, an inwardly directed force to the carton, so that juxtaposed base panels of the carton are moved towards one another. The mechanism further comprises control means to cause said linear parallel movement of said pressure bars.
- The object of the present invention is to provide an improved control means.
- To this end, the invention provides a panel tightening mechanism for causing the base panels of a wrap-around carton to be moved towards one another during a packaging process, the mechanism having a pair of pressure bars mounted on support means for linear parallel movement towards and away from one another relative to a carton feed path thereby to impart an inwardly directed force to the carton so that juxtaposed base panels of the carton are moved towards one another, said mechanism further comprising control means to cause said linear parallel movement of said pressure bars, characterized in that said control means comprises rotatable cam means having a cam track for each pressure bar and actuating means to rotate said cam thereby to cause said linear parallel movement of said pressure bars, in that said cam means comprises a pivotally mounted plate, in that said cam tracks comprise a pair of space slots formed in the cam plate, each of said pressure bars being slidingly mounted on guide means and having cam follower located in respective ones of the slots and in that said cam plate is disposed below said guide means, said guide means comprising a pair of parallel bars on which said pressure bars are transversely mounted.
- According to a feature of the invention said cam slots may be shaped and orientated such that successive equal angular movements of said cam plate in the same direction cause the cam followers and thereby said pressure bars to be moved towards one another and relative to said slots by successive linear distance which are unequal. Preferably, the cam plate is caused to rotate through an initial angular distance a, to displace said pressure bars towards one another through linear distance 'd', and said cam plate is caused to move through a further angular distance a2 in which a' = a2 to displace said pressure bars towards one another through a linear distance 'd' in which 'd,' > 'd 2,
- An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
- Figure 1 is a general perspective view of a tightening mechanism according to the invention; and
- Figures 2, 3 and 4 are schematic plan views of the cam plate showing movement of the cam plate through three sequential positions.
- Referring to the drawings, there is shown a mechanism 10 for tightening the base panels of a wrap-around type carton 'C'. The mechanism comprises a
pivotal cam plate 12,cam plate actuator arms 16, 18 incorporatingpressure bars 20, 22 andguide rails - The
pivotal cam plate 12 comprises a flat 'T' shaped plate which is pivotally mounted to asupport bed 28 centrally of the arm of the 'T' by avertical pivot pin 30. Pivotal movement is imparted to the cam plate by an actuator which, in this embodiment, comprises apneumatic ram 32. The ram has an extensible andretractable arm 34 which has its free end pivotally connected to the leg of the 'T' cam plate by apivotal connector 34. Thus, linear movement of the arm results in rotational movement of the cam plate relative to thesupport bed 28. - The arm of the 'T' is formed with two parallel
ovate slots central pivot pin 30 and which are set at an inclined angle relative to the axis 'x-x' passing through both pivotal connections of the plate. - A
tightening assembly 40 is mounted atop the cam plate and comprises a pair of fixedparallel guide rails - The tightening
arms 16 and 18 are mounted transversely of the guide rails bybearings downward extension piece 50 which carries apivot pin 52.Pin 52 is located slidingly inslot 36 of the cam plate. Similarly, tighteningarm 18 is formed with a central downward extension piece 54 which carries apivot pin 56.Pin 56 is slidingly located in aslot 38 of the cam plate. - Pressure bar 20 is detachably mounted on the upper surface of tightening arm 16 and has an inwardly directed
face 58 which is crenellated to form a series of spacedprojecting flats 60. Likewise,pressure bar 22 is detachably mounted on the upper surface of tightening arm 16 and has an inwardly directed face 62 which is crenallated to form a series ofspace projecting flats 64. The projectingflats 60 are in registry with the opposing projectingflats 64. It is envisaged that the inwardly directed faces of the pressure bars may be uninterrupted to form continuous flat faces. - The tightening mechanism is located adjacent the downstream end of a packaging machine such that one pressure bar is disposed on either side of bottom guide plate 66 along which cartons 'C' are conveyed between a pair of
side guides - The pressure bars are positioned so as to apply an inwardly directed force to the carton at or adjacent the junction between the carton side wall panels and the base panels. This has the effect of causing the adjacent edges of the base panels to move towards one another so as to ensure that locking tabs provided on one base panel of the carton are correctly inserted into complementary locking apertues provided in an adjacent base panel.
- The flats of the pressure bars apply pressure to the carton at intervals therealong which coincide with a central part of a container side wall in each of the rows.
- Referring now to Figures 2 to 4, in order to execute a working stroke of the pressure bars towards one another the cam plate is caused to pivot from the position depicted at Figure 2 to the position depicted at Figure 4. The pneumatic cylinder is actuated to pivot the cam plate so that the
pivot pins pivot pins pivot pins
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8507028 | 1985-03-19 | ||
GB858507028A GB8507028D0 (en) | 1985-03-19 | 1985-03-19 | Panel tightening device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0198602A1 EP0198602A1 (en) | 1986-10-22 |
EP0198602B1 true EP0198602B1 (en) | 1989-06-14 |
Family
ID=10576210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860301916 Expired EP0198602B1 (en) | 1985-03-19 | 1986-03-17 | Panel tightening device for wrap-around cartons |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0198602B1 (en) |
JP (1) | JPS61273308A (en) |
DE (1) | DE3663922D1 (en) |
ES (1) | ES293071Y (en) |
GB (1) | GB8507028D0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4744197A (en) * | 1987-07-27 | 1988-05-17 | Manville Corporation | Tray carton end flap auxiliary sealer |
CN109080221B (en) * | 2018-10-29 | 2023-10-20 | 天津味来包装技术有限公司 | Polygonal thermoplastic sealing bag making machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2062540A (en) * | 1933-02-23 | 1936-12-01 | Girdler Corp | Packaging apparatus and method |
US3064404A (en) * | 1960-08-09 | 1962-11-20 | Container Corp | Bottle packaging machine |
US3236022A (en) * | 1962-08-24 | 1966-02-22 | Loveshaw Corp | Automatic carton closing machine |
DE1971953U (en) * | 1964-09-25 | 1967-11-02 | Unilever Nv | WRAPPING MACHINE. |
-
1985
- 1985-03-19 GB GB858507028A patent/GB8507028D0/en active Pending
-
1986
- 1986-03-17 DE DE8686301916T patent/DE3663922D1/en not_active Expired
- 1986-03-17 EP EP19860301916 patent/EP0198602B1/en not_active Expired
- 1986-03-19 ES ES1986293071U patent/ES293071Y/en not_active Expired
- 1986-03-19 JP JP6192586A patent/JPS61273308A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0198602A1 (en) | 1986-10-22 |
DE3663922D1 (en) | 1989-07-20 |
GB8507028D0 (en) | 1985-04-24 |
ES293071U (en) | 1986-07-01 |
ES293071Y (en) | 1987-03-16 |
JPS61273308A (en) | 1986-12-03 |
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