US3771425A - Cardboard box blank and apparatus for making the same - Google Patents

Cardboard box blank and apparatus for making the same Download PDF

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Publication number
US3771425A
US3771425A US00174789A US3771425DA US3771425A US 3771425 A US3771425 A US 3771425A US 00174789 A US00174789 A US 00174789A US 3771425D A US3771425D A US 3771425DA US 3771425 A US3771425 A US 3771425A
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United States
Prior art keywords
roller
creasing
blades
blank
adjusting member
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
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US00174789A
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English (en)
Inventor
M Matsuo
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Individual
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Individual
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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
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • 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
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B31B50/22—Notching; Trimming edges of flaps
    • 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
    • B31B50/25—Surface scoring
    • B31B50/254—Surface scoring using tools mounted on belts or chains

Definitions

  • ABSTRACT A cardboard blank for a box is approximately rectangular, has two rows of crease sections elongated spacedly parallel to the long edges of the rectangle, and two groups of three slots extending inward of each edge to the nearer row of crease sections.
  • the crease sections are longitudinally consecutive, but transversely offset from each other by about the thickness of the blank so that the flap portions of the blank may be folded over each other in making the box without interfering with each other.
  • the apparatus employed for making the blank has paired rollers, one roller of each pair carrying circumferential cutting blades and an axial row of creasing blades axially interposed between the cutting blades and circumferentially adjustable to produce the desired offset of the crease see tions.
  • This invention relates to the production of cardboard boxes, and particularly to an improved blank for such boxes, and to apparatus for shaping the blank.
  • a concomitant object is the provision of apparatus for making such blanks in a simple and inexpensive manner.
  • the invention in one of its aspects provides a cardboard box blank which has two edges and is formed with two rows of crease sections spacedly interposed between thetwo edges, the edges and rows being elongated in a common direction, so that each row is near one edge and remote from the other.
  • Each row consists of longitudinally consecutive crease sections elongated in the afore-mentioned common direction.
  • Each section is transversely offset in the same direction from'the two longitudinally adjacent sections.
  • the groups of slots are formed in the blank and elongated transversely of the common direction of elongation of the edges and the rows of crease sections.
  • the slots of the two groups extend from respective ones of the edges to the near rows of crease sections, and each slot terminates between two of the transversely offset, longitudinally consecutive crease sections.
  • the amount of transverse offset between longitudinally consecutive crease sections should best be approximately equal to the thickness of the blank.
  • Each slot of one group is longitudinally aligned with a slot in the other group and connected with the aligned slot by a crease transverse to the first-mentioned rows of crease sections.
  • the edges, crease sections, and slots are symmetrical in a preferred, particularly simple and effective blank of the invention.
  • the invention is also concerned with apparatus for producing the afore-described blank, and such apparatus may include a pair of rollers defining a nip therebetween, at least one of the rollers being driven for rotation about its axis.
  • Cutting blades mounted on the driven roller are elongated circumferentially relative to the roller and are axially spaced from each other for simultaneous movement through the nip in cutting cooperation with the other.
  • Axially elongated creasing blades of somewhat smaller radial height than the cutting blades are interposed on the driven roller between respective pairs of axially adjacent cutting blades.
  • An adjusting device permits each creasing blade to be moved circumferentially relative to the driven roller toward and away from a position of axial alignment with an axially adjacent other creasing blade.
  • the creasing blades can be adjusted for blank thickness in a particularly simple and reliable manner when they are pivotally mounted on the driven roller for movement about a pivot axis extending in the direction of the axis of roller rotation.
  • FIG. 1 shows a cardboard blank of the prior art for a box in semicircular view
  • FIG. 3 illustrates a corresponding blank of the invention in a view corresponding to that of FIG. 1;
  • FIG. 4 shows apparatus for preparing the blank of FIG. 3 in fragmentary side-elevational section
  • FIG. 6 shows an element of the apparatus of FIG. 4 in front elevation in a different angular position.
  • the outer parts 1 2 of the modified blank are separated from the central part 3' by longitudinal rows 4',
  • each slot 7 terminates between two transversely offset crease sections.
  • the lateral offset of the sections 4a from the sections 4b, and the corresponding offset of the sections 5a from the sections 5b is approximately equal to the thickness of the cardboard employed so that the flaps 6, when folded along the associated creases, smoothly fit over each other without interference at the edges and corners of the box.
  • the cooperating rollers 11 have a surface layer of wear resistant synthetic rubber or moderately resilient plastic, and a smoothly cylindrical surface. Whily only one cutting blade 15 and one creasing blade 16 are visible on each roller 10 in FIG. 4, the disposition of the several blades on the roller 10 is evident from FIG. 3 which, in effect, provides a composite developed view of the blades on each roller, the cutting blades on the rollers 10 being represented by respective groups of slots 7, and the creasing blades the creases 9 representing creasing blades on a non-illustrated third pair of rollers, as will presently become apparent 16 by respective rows 4', 5'.
  • the circumferentially elongated cutting blades 15 are conventional in themselves and do not require more detailed description.
  • the several radially lower creasing blades 16 of each roller 10 are mounted in a common axial groove 17 of the roller 10, as is shown in more detail in FIG. 5.
  • Mounting blocks 18 are arranged near the axial ends of each creasing blade 16 and fastened in the groove in a manner not shown.
  • An approximately radial slot 19 in each block 18 is open in a radially outward direction and in both axial directions, its radially inner end 20 being enlarged into a square, cross sectional shape to receive a cylindrically enlarged pivot portion 21 of the blade 16 in a manner to permit limited angular movement of the blade 16 about the pivot axis of its cylindrical portion 21.
  • the leading outer part of the sheet passes between the first pair of rollers without being engaged by the blades 15, 16, and the trailing outer part is creased by the blades 16 and slotted by the blades 15.
  • the leading outer part is similarly creased and thereafter slotted by the blades 15, 16 on the second roller 10 in cooperation with the associated resilient roller 11.
  • the length of the several slots 7 formed by the blades 15 can be varied by changing the angular position of the rollers 10 relative to each other and by suitably feeding the sheets 12 to the nip of the first pair of rollers.
  • the positions of the several longitudinally consecutive crease sections 4a, 4b, 5a, 5b may be shifted transversely toward and away from longitudinal alignment by turning the discs 22 associated with the corresponding creasing blades 16, and thereby pivoting the blades 16 through the small angles required for making the free creasing edges of the blades move a distance equal to the thickness of the processed cardboard.
  • the eccentricity of the pin 23 is preferably chosen in such a manner that one abutment 25 abuts against the surface of a block 18 in the position of the blades 16 producing the sections 4a, 5a, and the other abutment 25 abuts against the block surface for producing crease sections 4b, 5b, the two positions of the disc 22 being angularly offset about 320, or less than one revolution.
  • the transverse creases 9 are formed separately between a third pair of rollers whose configuration is evident from FIG. 3, but the cutting blades 15 may be extended circumferentially, and the extensions reduced in radial height to score the creases 9 in the same operation.
  • An apparatus for shaping a cardboard blank which comprises:
  • a plurality of cutting blades mounted on said one roller, said blades being elongated circumferentially relative to said one roller and axially spaced from each other for simultaneous movement through said nip in cutting cooperation with the other roller;
  • adjusting means for moving each of said creasing blades circumferentially relative to said one roller toward and away from a position of axial alignment with an axially adjacent other creasing blade.
  • said adjusting means for each creasing blade include an adjusting member mounted on said one roller for angular movement about an axis extending in said common direction and spaced from said pivot axis, and motion transmitting means interposed between said adjusting member and said creasing blade for pivotally moving said creasing blade in response to the angular movement of the associated adjusting member.
  • said motion transmitting means include an eccentric pin on said adjusting member and an arm on said creasing blade hingedly engaging said pin.

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US00174789A 1970-09-30 1971-08-25 Cardboard box blank and apparatus for making the same Expired - Lifetime US3771425A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45084965A JPS5142988B1 (enrdf_load_stackoverflow) 1970-09-30 1970-09-30

Publications (1)

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US3771425A true US3771425A (en) 1973-11-13

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Application Number Title Priority Date Filing Date
US00174789A Expired - Lifetime US3771425A (en) 1970-09-30 1971-08-25 Cardboard box blank and apparatus for making the same

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US (1) US3771425A (enrdf_load_stackoverflow)
JP (1) JPS5142988B1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002524A (en) * 1990-01-08 1991-03-26 The Langston Corporation Precrush tool for corrugated board slotter head
USD594327S1 (en) * 2007-03-07 2009-06-16 Donald L. Shea Easy to open box blank

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2117220A (en) * 1936-09-10 1938-05-10 Samuel M Langston Co Machine for making box blanks
US3015603A (en) * 1957-08-12 1962-01-02 Hawley Products Co Process of making felted containers
US3314340A (en) * 1963-11-09 1967-04-18 Deritend Eng Co Apparatus for use in the manufacture of boxes and the like
US3443490A (en) * 1965-06-15 1969-05-13 Deritend Eng Co Apparatus for cutting and creasing cardboard
DE2061973A1 (de) * 1969-12-17 1971-09-23 Gebr Bohler & Co, AG, Wien Vorrichtung zum Rillen von Well pappe, Pappe, Karton od dgl
US3611884A (en) * 1970-01-26 1971-10-12 William J Hottendorf Box making machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2117220A (en) * 1936-09-10 1938-05-10 Samuel M Langston Co Machine for making box blanks
US3015603A (en) * 1957-08-12 1962-01-02 Hawley Products Co Process of making felted containers
US3314340A (en) * 1963-11-09 1967-04-18 Deritend Eng Co Apparatus for use in the manufacture of boxes and the like
US3443490A (en) * 1965-06-15 1969-05-13 Deritend Eng Co Apparatus for cutting and creasing cardboard
DE2061973A1 (de) * 1969-12-17 1971-09-23 Gebr Bohler & Co, AG, Wien Vorrichtung zum Rillen von Well pappe, Pappe, Karton od dgl
US3611884A (en) * 1970-01-26 1971-10-12 William J Hottendorf Box making machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002524A (en) * 1990-01-08 1991-03-26 The Langston Corporation Precrush tool for corrugated board slotter head
USD594327S1 (en) * 2007-03-07 2009-06-16 Donald L. Shea Easy to open box blank

Also Published As

Publication number Publication date
JPS5142988B1 (enrdf_load_stackoverflow) 1976-11-18

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