US3791268A - Machine for flattening cartons - Google Patents

Machine for flattening cartons Download PDF

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Publication number
US3791268A
US3791268A US00278502A US3791268DA US3791268A US 3791268 A US3791268 A US 3791268A US 00278502 A US00278502 A US 00278502A US 3791268D A US3791268D A US 3791268DA US 3791268 A US3791268 A US 3791268A
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US
United States
Prior art keywords
machine
walls
carton
folding
accordance
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 - Lifetime
Application number
US00278502A
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English (en)
Inventor
U Kollmar
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.)
BELLMER GEB KG MASCHF
Gebr BELLMER KG MASCHINENFAB DT
Original Assignee
BELLMER GEB KG MASCHF
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19712139198 external-priority patent/DE2139198C3/de
Application filed by BELLMER GEB KG MASCHF filed Critical BELLMER GEB KG MASCHF
Application granted granted Critical
Publication of US3791268A publication Critical patent/US3791268A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • B31B2120/302—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing collapsible into a flat condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/56—Folding sheets, blanks or webs by rotary members co-operating with blades

Definitions

  • Coan Attorney, Agent, or Firm-Markva and Smith ABSTRACT A machine for flattening cartons whereby the carton walls are erected about folding creases pre-embossed along their lower edges and whereby end sections provided on one set of mutually parallel walls are folded inwards at right angles about a vertical folding crease and their outsides can be glued to the insides of the walls which are parallel to them and whereby the ends of two mutually opposite walls are provided with folding creases extending from the lower corners of the carton to the upper edges of the walls under an angle of 45.
  • the machine is provided with folding devices arranged simultaneously to be moved against all four carton walls.
  • This invention relates to a machine for flattening cartons.
  • the carbon elements are prepared as plane, prestamped cut-outs with pre-embossed folding creases for folding together.
  • the carton walls are erected about folding creases pre-embossed along their lower edges, and end sections provided with one set of mutually parallel walls are folded inward at right angles about a vertical folding crease, their outside being glued to the inside of the other pair of walls which are parallel to them.
  • the present invention provides a machine for flattening cartons whereby the carton walls are erected about foldingcreases pre-embossed along their lower edges and whereby end sections provided on one set of mutually parallel walls are folded inwards at right angles about a vertical folding crease and their outsides can be glued to the insides of the walls which are parallel to them and whereby the ends of two mutually opposite walls are provided with folding creases extending from the lower corners of the carton to the upper edges of the walls under an angle of 45, the machine being provided with folding devices arranged simultaneously to be moved against all four carbon walls.
  • machine folding devices are provided in the shape of helical bodies rotatable on vertical spindles and furnished with a partial screw thread. In their initial position the said helical bodies with the upper ends of their screw thread elements abut the carbon walls in their direction of rotation, their screw thread element descending thereafter in a rear and downward direction.
  • FIG. 1 is a side view of a machine for flattening cartons according to the invention
  • FIG. 2 is a plan view of the machine in its initial position
  • FIG. 3 is a side view of the machine elements acting direct on the carton, in their initial positions
  • FIG. 4 is a similar view of the same machine elements after partial forward movement
  • FIG. 5 is a plan view of FIG. 41 showing the machine elements in the same positions as in FIG. 4, and
  • FIG. 6 is a side view of an additional part of the machine.
  • FIGS. 1 and 2 within a machine frame ll there is a pair of longitudinal guide rails 2 which are symmetrically adjustable in respect of the vertical longitudinal centre plane 0' of the machine frame 1 in the direction of arrows A.
  • the two guide rails 2 are each provided at the bottom near the centre of their length with a bearing 3 having a female thread, the hand of which is in each case opposite both as regards the two bearings 3 of each rail 2 and the two rails 2.
  • a pusher 5 is provided on either side of a transverse centre plane 0" of the machine, the said pusher 5 being symmetrically movable.
  • the pushers 5 are provided with oppositely handed female threads in which in each case one half of a spindle 6 with an appropriately handed male thread is movably located, axial movement of the said spindle 6 being prevented at the transverse centre plane 0".
  • Each pusher 5 contains near its end facing the end of the corresponding guide rail 2 a vertical spindle 7 and near its other end a second vertical spindle 8, the said spindles being rotatably located.
  • the spindles 7 and 8 may be of equal height. In the preferred embodiment, the spindle 7 is higher, and the spindle 8 is lower.
  • a track 11 corresponding to half a screw thread is in each case connected by means of an upper and a lower, oppositely radially oriented arm 9, 10 to the higher spindle 7, the said track 11 having a correspondingly greater height.
  • a track 14 of lesser height corresponding to half a screw thread is connected by means of, in each case, an upper and a lower arm 12, 13 with the lower spindle 8.
  • the higher track 11 has a longer radius, and the lower track 14 has a shorter one.
  • the tracks 11 and 14 may also correspond to a screw thread section of smaller angular range if the angular position of their arms 9, or l2, 13, respectively, are appropriately selected.
  • the vertical spindles 7 and 8 project downward beyond the pushers 5, the said projections being provided with, in each case, a sprocket of identical diameter, an endless chain 16 being laid around the said sprockets so that the two spindles 7 and 8 are compelled to rotate in the same direction.
  • the lower ends of the tall spindles 7 are connected via a universal joint 17 with a universal shaft 18 and the latter via a further universal joint 19 with a shaft 21 rotatably located within a vertical bearing 20 in the lower part of the machine frame 1, the said shaft 21 being provided with a gearwheel 22 at its lower end.
  • the longitudinal guide rails 2 and the pushers 5 guided within them can be adjusted within wide limits both towards and away from one another (dash-dotted position in FIG. 1).
  • the machine with its screw thread tracks 11 and 14 can be adjusted to and used for cartons of very different sizes.
  • the two gearwheels 22 which are transversely opposite one another in respect of the longitudinal centre plane 0' of the machine frame 1 (FIG. 2) are in direct mutual engagement so as to rotate each other and the tracks 11 and 14 in opposite directions.
  • the rotation which takes place in accordance with the arrows drawn in FIGS. 2 and 5 is at the same time so arranged that the high starting section of all the tracks 11 and 14 are first rotated against the peripheral walls of a carton.
  • the machine is preferably used for cartons 25 provided at the ends of their walls 26 located along the longitudinal edges of the guide rails 2 with the sections 28 glued to the insides of the transverse walls 27, and directly behind the said sections 28 with folding creases 29 ascending from the lower corners of the carton to the upper edges of the longitudinally erect walls 26 under an angle of 45.
  • the small tracks 14 pass below the triangles of walls 27 which are separated by means of the oblique folding creases 29 and cause the said triangles to be folded inward between the ends of the walls 26 and 27 abutting the carton base 30 while being at right angles in respect of one another.
  • the cartons 25 are flattened on all four sides simultaneously and can now be packed and shipped in a space-saving manner. For this purpose, they are pushed from the zone of the flattening system by a bar 32 moved in stages by an endless chain 31.
  • each of the tall spindles 7 is provided with an adjusting ring 33 (FIG. 6) with a low track 34 shaped in the manner of a screw thread and so arranged that it precedes the track 11.
  • the adjusting ring 33 is provided with a perforation 35 enabling it to be slid from above past the upper arm 9 of the track 11 unto the spindle 7 and can then be adjusted by means of its track 34 at the corners of the carton walls at a lower height above the upper edge of the said walls, thus pressing the base 30 of the carton 25 flat onto the work surface when the spindle 7 is rotated.
  • the tracks 11 and 14 may be replaced by solid helical bodies consisting of a plastic material, the periphery of the said body being shaped in the manner of a screw thread in accordance with its path along the carton.
  • the gearing 22 and 24 may be replaced by a chain gear.
  • a machine for flattening cartons having a base and two pairs of mutually opposite walls erected about preembossed folding creases provided between said base and said walls, said walls being connected to each other by means of end sections and one of the pairs of mutually opposite walls of said cartons being provided, for flattening purposes, with folding creases extending from the lower corners of the carton to the upper edges of said one of the pair of mutually opposite walls at an angle of about 45, said machine comprising a. first and second rotatable folding devices positioned adjacent each corner of the carton, each device being constructed in the form of cam means, said devices being arranged at two adjacent walls of a carton in the vicinity of each corner thereof to act simultaneously on the erected carton walls,
  • said first folding devices having a greater axial height and a larger diameter than the second folding devices and said second folding devices being positioned closer to said one of the pairs of mutually opposite walls than said first folding devices.
  • folding devices in the manner of screw threads consist of solid bodies, e.g. of plastic material.
  • adjusting rings open on one side and provided with helical tracks of short axial length are arranged on said first spindles so as to be adjustable above the upper edges of the corners of the carton walls and to precede the folding devices.
  • a machine according to claim 1 further comprising a pusher for commonly holding the two spindles of the first and second folding devices disposed at each corner of the carton.
  • a machine for flattening cartons having a polygon shaped base and a plurality of side walls erected about pre-embossed folding creases between said base and side walls, the ends of adjacent side walls being joined at each corner, at least a portion of said plurality of side walls including folding creases extending at an angle of about 45 from lower corners of the carton to the upper edges thereof, said machine comprising a. a pair of rotatably driven cam means positioned adjacent each corner of the carton to simultaneously fold the erected carton walls,
  • each pair of cam means having a greater axial length and diameter than the second of each pair of cam means

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  • Making Paper Articles (AREA)
US00278502A 1971-08-05 1972-08-07 Machine for flattening cartons Expired - Lifetime US3791268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712139198 DE2139198C3 (de) 1971-08-05 Maschine zum Flachlegen von Schachteln

Publications (1)

Publication Number Publication Date
US3791268A true US3791268A (en) 1974-02-12

Family

ID=5815865

Family Applications (1)

Application Number Title Priority Date Filing Date
US00278502A Expired - Lifetime US3791268A (en) 1971-08-05 1972-08-07 Machine for flattening cartons

Country Status (9)

Country Link
US (1) US3791268A (de)
JP (1) JPS5233548B1 (de)
CH (1) CH536715A (de)
DD (1) DD99750A5 (de)
FR (1) FR2149825A5 (de)
GB (1) GB1394882A (de)
IT (1) IT963540B (de)
SU (1) SU450392A3 (de)
ZA (1) ZA725252B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254692A (en) * 1980-04-04 1981-03-10 Wm. C. Staley Machinery Corporation Helical folder for paperboard blanks
CN114228245A (zh) * 2021-12-28 2022-03-25 天长市天翔包装有限公司 瓦楞纸箱的二次压线折叠机构
US20230097351A1 (en) * 2020-02-19 2023-03-30 Cj Cheiljedang Corporation Packing box folding system
US12409559B1 (en) * 2023-12-15 2025-09-09 Amazon Technologies, Inc. High-capacity totes collapser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2024866A6 (es) * 1990-06-19 1992-03-01 Boix Maquinaria Sa Maquina plegadora-empaquetadora de cajas de carton.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US799942A (en) * 1904-02-27 1905-09-19 Gustave F Kriesel Device for cutting, scoring, folding, and pasting cartons.
US1730543A (en) * 1929-10-08 stortz
US1912565A (en) * 1930-04-04 1933-06-06 Brown Paper Goods Company Box making machine
US2896382A (en) * 1956-02-23 1959-07-28 Interstate Folding Box Co Folding device for paperboard carriers
US3309970A (en) * 1964-09-08 1967-03-21 Klemark Inc Method and means for flat folding bottom sealed cartons
US3343464A (en) * 1963-05-10 1967-09-26 Hoague Sprague Corp Box forming machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730543A (en) * 1929-10-08 stortz
US799942A (en) * 1904-02-27 1905-09-19 Gustave F Kriesel Device for cutting, scoring, folding, and pasting cartons.
US1912565A (en) * 1930-04-04 1933-06-06 Brown Paper Goods Company Box making machine
US2896382A (en) * 1956-02-23 1959-07-28 Interstate Folding Box Co Folding device for paperboard carriers
US3343464A (en) * 1963-05-10 1967-09-26 Hoague Sprague Corp Box forming machines
US3309970A (en) * 1964-09-08 1967-03-21 Klemark Inc Method and means for flat folding bottom sealed cartons

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254692A (en) * 1980-04-04 1981-03-10 Wm. C. Staley Machinery Corporation Helical folder for paperboard blanks
US20230097351A1 (en) * 2020-02-19 2023-03-30 Cj Cheiljedang Corporation Packing box folding system
US12077335B2 (en) * 2020-02-19 2024-09-03 Cj Cheiljedang Corporation Packing box folding system
CN114228245A (zh) * 2021-12-28 2022-03-25 天长市天翔包装有限公司 瓦楞纸箱的二次压线折叠机构
CN114228245B (zh) * 2021-12-28 2023-09-29 天长市天翔包装有限公司 瓦楞纸箱的二次压线折叠机构
US12409559B1 (en) * 2023-12-15 2025-09-09 Amazon Technologies, Inc. High-capacity totes collapser

Also Published As

Publication number Publication date
DE2139198A1 (de) 1973-02-15
FR2149825A5 (de) 1973-03-30
IT963540B (it) 1974-01-21
GB1394882A (en) 1975-05-21
DD99750A5 (de) 1973-08-20
CH536715A (de) 1973-05-15
JPS5233548B1 (de) 1977-08-29
SU450392A3 (ru) 1974-11-15
ZA725252B (en) 1973-04-25
DE2139198B2 (de) 1975-08-28

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