WO2012143853A1 - Tête d'assemblage d'angle destinée à un appareil de montage de boîte - Google Patents

Tête d'assemblage d'angle destinée à un appareil de montage de boîte Download PDF

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Publication number
WO2012143853A1
WO2012143853A1 PCT/IB2012/051915 IB2012051915W WO2012143853A1 WO 2012143853 A1 WO2012143853 A1 WO 2012143853A1 IB 2012051915 W IB2012051915 W IB 2012051915W WO 2012143853 A1 WO2012143853 A1 WO 2012143853A1
Authority
WO
WIPO (PCT)
Prior art keywords
along
tape
corner
slide
pressing
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.)
Ceased
Application number
PCT/IB2012/051915
Other languages
English (en)
Inventor
Lamberto Saletti
Giovanni Broccolini
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.)
Europrogetti SRL
Original Assignee
Europrogetti SRL
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
Application filed by Europrogetti SRL filed Critical Europrogetti SRL
Publication of WO2012143853A1 publication Critical patent/WO2012143853A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/68—Uniting opposed surfaces or edges; Taping by stitching, stapling or riveting
    • 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
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate 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
    • B31B2120/50—Construction of rigid or semi-rigid containers covered or externally reinforced
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/72—Uniting opposed surfaces or edges; Taping by applying and securing strips or sheets
    • B31B50/722—Uniting opposed surfaces or edges; Taping by applying and securing strips or sheets on already formed boxes
    • B31B50/724—Applying tapes on the corners of set-up boxes, e.g. involving setting-up

Definitions

  • the present invention concerns the field of the apparatus for forming boxes, especially but not exclusively made of flat or corrugated cardboard to be subsequently lined with a covering sheet.
  • the flat blank is fed to an erecting station in a feeding direction, and the folding of the blank around the mould, along folding lines that are both parallel and crosswise to the feeding direction, is carried out by engagement with underlying and fixed folding means, against which the blank abuts, pressed in a top-bottom direction by the same mold or mandrel.
  • the vertical corners of the box being erected are joined by applying segments of heat adhesive tapes. Then, the box is disengaged from the mould and made to exit from the erecting station, on the opposite side with respect to the feeding side.
  • the apparatus provides for a plu rality of heads acting on respective corners and comprising, in association with corner blank folding slabs, means for feeding and cutting the heat adhesive tape into segments and heating means for welding the corners via heated pressing pads.
  • the pads are driven towards the respective corners to be joined, tightening against each corner the tape segment and transmitting to it a suitable amount of heat so that both the heat and the mechanical pressing action determine the welding of the segment over the relevant corner of the box being erected.
  • the tape segment When the corners have mutually different heights, as frequently occurs in boxes with special shapes that are more and more the object of market demands, a problem arises in that the tape segment, the length thereof being predetermined so as to be the same for all the corners, exceeds or is too short for at least some of the corners.
  • the length is chosen based on the length (or height, being the measure along the mould displacement direction) of a short corner, the longer corner or corners will result partly lacking the welding, with a consequent worsening of the quality or the necessity of subsequently applying supplementary segments. If a different choice is made (adapting the length to the longer corners), shorter corners will have excess tape that need be removed, with consequent additional labour costs.
  • the welding has to be repeated for the various corners, so that the production times are unbearably lengthened and the quality is poorer, because the already joined corners are again subject to a heating and a pressure, with a resulting deterioration.
  • the object of the present invention is to overcome the above mentioned drawback, permitting to form boxes with corners of mutually different heights while ensuring minimal production times (not longer than the present ones for boxes with regular and homogeneous corners), a fully satisfactory quality and no additional costs due to supplementary labour.
  • FIG. 1 is a schematic front perspective view of a head according to the invention.
  • - figure 2 and figure 3 are respectively a top plan view and a bottom plan view of the head of figure 1 ; - figures 4 and 5 are side view of the head, in two different working conditions, corresponding respectively to maximum and minimum corner height settings.
  • a head according to the invention comprises a support 1 to be mounted to a frame of an otherwise conventional box erecting apparatus, neither shown nor described in detail.
  • the support 1 has in particular a first end 1 a shaped so as to be suitable for said mounting, and to be functionally associated with the power supply and driving systems, as obvious to the skilled person and as such not being part of the invention.
  • a second end 1 b opposite to the first, mounting end 1 a, faces a box erecting region and according to the invention defines a first linear guide 2, e.g. consisting of two dovetail rails 2', extending along an erection direction X that corresponds to the reciprocating displacement direction of the mould (not shown), and thus to the height of the box corner to be welded/joined, measured orthogonally with the base of the box.
  • a first linear guide 2 e.g. consisting of two dovetail rails 2', extending along an erection direction X that corresponds to the reciprocating displacement direction of the mould (not shown), and thus to the height of the box corner to be welded/joined, measured orthogonally with the base of the box.
  • the same end 1 b provides for a passage 3, corresponding with a track 4 (figure 3) formed in a lower face 1 c of the support 1 for permitting a reciprocating sliding, according to a pressing direction Y on a plane orthogonal with the erection direction X, of a thrust stirrup 5 for thrusting a pressing pad (see hereafter).
  • the stirrup 5 has in the example a L- shaped structure, with a first arm 5a that slides within the track 4 and projects beyond the second end 1 b of the support 1 through the passage 3, and a second arm 5b that protrudes downwards parallel with the erection direction X.
  • the second arm 5b is outlined so as to define a second linear guide 6.
  • the guide system formed as a whole by the first linear guide 2 provided by the support 1 and the second linear guide 6 provided by the stirrup 5, serves for the reciprocating sliding engagement of a corner joining unit G comprising heat adhesive tape feeding and cutting means, blank folding slabs and a heated pressing pad.
  • the unit G comprises a slide 7 with a pair of flanks 7a, 7b that engage at an end respectively with the two rails 2' of the first guide 2, projecting frontwards along the already mentioned pressing direction Y.
  • flanks 7a, 7b At the other ends (opposite the connection ends to the first guide 2), on the flanks 7a, 7b there are fixed respective blank folding slabs 8, between and underneath which (and thus also between the flanks of the slide) a pressing pad 9 extends.
  • the pressing pad 9 is integral for sliding along the erection direction X with the slide 7 (and with the slabs 8), having instead one degree of freedom as far as the sliding along the direction Y is concerned, under the thrust of the stirrup 5; in fact, the same pad is engaged at its rear side with the linear guide 6 of the stirrup 5.
  • the assembly of stirrup 5 and pad 9 moves in the space determined by the spacing between the two flanks 7a, 7b.
  • the slabs 8 are besides preferably mounted so as to be adjustable in height. To such purpose, their mounting can e.g. be carried out via slots 8a that can be made to slide on respective threaded locking members, not shown.
  • a counter-blade 10 for cutting the tape
  • a knurled roll 1 1 for driving the same tape, supported by a base 12 integral with the flanks 7a, 7b
  • an idle countering roll 13 tangentially cooperating with the knurled roll 1 1 and mounted on a lever 14 hinged to the base 12.
  • the knurled roll 1 1 is, according to a further aspect of the invention, driven by motor means mounted on the slide 7 and movable integral with the same along the direction X.
  • a rotation axle 1 1 a of the roll 1 1 protrudes from the base 12 to engage with a transmission belt 15 driven by a shaft 16 supported between a flank 7a of the slide 7 and a lateral plate 17 arranged on the same flank in a spaced fashion.
  • the shaft 16, on the outside of the plate 17, is in turn brought into rotation by means of a gearing 18 with conical pinions, providing for the required feeding drive (i.e. the feeding of the tape) thanks to a motor 19 having a vertical shaft and again mounted integral with the plate 17.
  • control and adjustment means for setting the position in height of the slide, and with it of the whole unit G.
  • control and adjustment means simply consist of an endless screw 20, the rotation of which (around its own axis arranged parallel with the erection direction X) with respect to a bracket 22 fixed to the support 1 , is actuated manually from the outside.
  • the screw 20 is engaged in a threaded seat 21 (figure 3) formed in the slide 7, in this case at the base of the flank 7a.
  • the length of the tape segment can be adjusted independently for each head, taking as a reference the end of the corner at the bottom of the box and arranging the tape cutting point exactly at the top end, fitting the extension in height of the same corner.
  • one single working step (operation of the pressing pads) allows for carrying out at the same time the cut and the welding of the segments, and thus the accurate joining along the entire length of all the mutually different corners, without reducing the working speed or repeating the same working step. In this way, the above mentioned problem with the known systems is fully solved.
  • the head according to the invention can be provided as a replacement kit for replaci ng a respective standard head of a substantially conventional apparatus.
  • the possibility of adjusting also the height of the blank folding slabs 8 will allow for fitting even more accurately the head to the specific processing needs. In this respect, one should take into account that, as the height of the corner varies, and thus the position in height of the cutting point varies, it is preferable to displace the slabs so that the starting point of the fold is nevertheless kept at the same height.
  • the head is adapted to be controlled by the central control system of the apparatus, as obvious to the skilled person.
  • control system will also automatically control also adjustment means that can differ from the screw system of the depicted embodiment (e.g. via linear actuators).
  • other constructive details can differ from the exemplifying embodiment, such as the driving means for driving the belt (still remaining autonomous and independent for each head), as well as the shape of the slide 7 and of the support 1 .
  • references up, down, top, bottom , and the like used in the present description obviously refer to a head mounted in a working condition on the apparatus, as in fact arranged in the figures.

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  • Making Paper Articles (AREA)
  • Paper (AREA)

Abstract

La présente invention a trait au domaine d'un appareil permettant de former des boîtes, tout particulièrement mais non exclusivement constituées de carton ondulé ou plat devant être doublé par la suite avec une feuille de revêtement, et en particulier la présente invention a trait à une tête d'assemblage d'angle à hauteur variable destinée à un appareil de montage de boîte.
PCT/IB2012/051915 2011-04-20 2012-04-17 Tête d'assemblage d'angle destinée à un appareil de montage de boîte Ceased WO2012143853A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI2011A000081 2011-04-20
IT000081A ITFI20110081A1 (it) 2011-04-20 2011-04-20 Testa cucitrice per un'apparecchiatura formatrice di scatole

Publications (1)

Publication Number Publication Date
WO2012143853A1 true WO2012143853A1 (fr) 2012-10-26

Family

ID=44554073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/051915 Ceased WO2012143853A1 (fr) 2011-04-20 2012-04-17 Tête d'assemblage d'angle destinée à un appareil de montage de boîte

Country Status (2)

Country Link
IT (1) ITFI20110081A1 (fr)
WO (1) WO2012143853A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1624885A (en) * 1925-10-17 1927-04-12 Interstate Folding Box Co Machine and method for making paper boxes
EP0655325A2 (fr) 1993-11-05 1995-05-31 Renzo Santini Machine à assembler des boîtes en carton

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1624885A (en) * 1925-10-17 1927-04-12 Interstate Folding Box Co Machine and method for making paper boxes
EP0655325A2 (fr) 1993-11-05 1995-05-31 Renzo Santini Machine à assembler des boîtes en carton

Also Published As

Publication number Publication date
ITFI20110081A1 (it) 2012-10-21

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