EP0624440A1 - Maschine zum Vorbereiten von Bahnen um diese zu Vernichten - Google Patents

Maschine zum Vorbereiten von Bahnen um diese zu Vernichten Download PDF

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Publication number
EP0624440A1
EP0624440A1 EP94401081A EP94401081A EP0624440A1 EP 0624440 A1 EP0624440 A1 EP 0624440A1 EP 94401081 A EP94401081 A EP 94401081A EP 94401081 A EP94401081 A EP 94401081A EP 0624440 A1 EP0624440 A1 EP 0624440A1
Authority
EP
European Patent Office
Prior art keywords
machine
strips
pieces
machine according
advance
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.)
Granted
Application number
EP94401081A
Other languages
English (en)
French (fr)
Other versions
EP0624440B1 (de
Inventor
Bernard Pourchet
Jean-Yves Pourchet
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.)
Additif SARL
Original Assignee
Additif SARL
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 Additif SARL filed Critical Additif SARL
Publication of EP0624440A1 publication Critical patent/EP0624440A1/de
Application granted granted Critical
Publication of EP0624440B1 publication Critical patent/EP0624440B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B65H20/04—Advancing webs by friction roller to effect step-by-step advancement of web
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste

Definitions

  • the present invention relates to a machine for conditioning continuous strips of material for their elimination.
  • the invention finds a particularly advantageous application in the field of the food industry, in particular in association with thermoformers.
  • thermoformers which use films of suitable plastic material. These are driven along the machines by a conveyor which clamps the films on the sides so as to maintain them during their transport. After thermoforming and packaging of the food, the plastic material films are cut in order to release the products thus conditioned. During this cutting operation, the edges of the films engaged in the conveying apparatus are lost in the form of strips, or selvedges, of approximately 10 mm in width, which must be discarded.
  • a first method consists in cutting them in advance from the thermoforming machine, ie 300 to 400 mm, and in recovering the selvedges thus cut out in containers.
  • the volume occupied by the selvedges is important, the container filling rate not exceeding 20%.
  • no centralization of waste being possible, it is therefore necessary to handle the containers several times a day.
  • the selvedges leaving the thermoforming machines are wound on large coils whose diameter can reach 800 mm.
  • these coils have a limited autonomy for a duration of the order of 6 hours, and they require operations of manipulation and disassembly of a flange to empty the full coils which require a certain period of time.
  • the volume occupied by selvedges in containers remains significant.
  • the technical problem to be solved by the object of the present invention is to propose a machine for conditioning continuous strips of material with a view to their elimination which would make it possible, associated with a thermoforming machine for example, to reduce the volume of the strips, or selvedges, in recovery containers by increasing the filling rate, and limiting labor-intensive handling operations.
  • the solution to the technical problem posed consists, according to the present invention, in that said machine comprises means for advancing in steps and for cutting said strips into pieces calibrated in advance of the machine, followed by means for recovering in containers. said pieces of material strips.
  • the pieces of strip thus cut can be a few centimeters in length and thus occupy a relatively small volume in the containers. In this way it is possible to reach filling coefficients of 90%.
  • each machine being provided with a recovery outlet tube
  • said installation comprises a collecting tube for the outlet tubes and means for forced circulation of the pieces of strips calibrated at the advance of the machine from the tubes of outlet and to a container into which the collecting tube opens.
  • the means of forced circulation are, as desired, means of blowing or suction.
  • Figure 1a is a front view of a machine according to the invention.
  • Figure 1b is a top view of the machine of Figure 1a.
  • Figure 2a is a front view of the cutting means of the machine of Figure 1a.
  • Figure 2b is a side view of the cutting means of Figure 2a.
  • FIG. 1a shows a front view of a machine for conditioning continuous strips of material, such as strip 10, for their elimination.
  • the strip 10 can be a selvedge from a thermoformer.
  • the machine of FIG. 1 a comprises means 100 for advancing by step and for cutting the strip 10 into pieces calibrated at the advance step of the machine, followed by means 200, 201 for recovering said pieces of strip of material.
  • the means 100 for advancing in steps and for cutting comprise a motor member 110, here a pneumatic cylinder, which applies an alternative stroke to a drive rod 111, stroke represented by the double arrow F1.
  • a toothed wheel 130 with free wheel 131 is driven in rotation by the rod 120 with rack.
  • a roller 140 for advancing the strip 10 of material is integral with the free wheel 131 of the toothed wheel 130 so as to cause the advancement of the strip during a first stage of the alternating stroke F1 of the drive rod 111 .
  • the advance of the strip 10 occurs when the drive rod, and therefore the rack rod 120, moves upwards.
  • the reduction ratio between the diameter of the roller 140 in advance and that of the toothed wheel 130 makes it possible to adjust the length of cut strip, that is to say the pitch of advance of the machine, as a function of the stroke of the cylinder 110.
  • a counter roller 150 is subjected to a restoring force F2 in the direction of the roller in advance.
  • the F2 force of recall is produced, for example, by a torsion spring 151.
  • FIGS. 1a to 2b show cutting means proper comprising, on the one hand, a knife-carrying tool 160, carrying a knife 161 in a bevel secured to the rod 120 with rack and the smooth rod 121, and, on the other hand, a fixed counter knife 170, the strip 10 to be cut circulating between the knife holder tool and the fixed counter knife.
  • the knife-holder tool 160 is therefore animated with respect to the counter-knife 170 with the same reciprocating movement as the rack rod 120 so that, initially, the knife-holder tool emerges from the strip 10 while the latter advances by one step, and, in a second step of the alternative stroke of the drive rod 111, the knife-carrying tool 160 comes to cut the strip, which then rests on the counter-knife 170, in pieces calibrated in advance of the machine, while the roller 140 in advance is fixed, and therefore the band 10 immobile, due to the free wheel 131.
  • the pieces of strip of material thus cut are recovered, at the outlet of the machine, by an outlet tube 200 in the direction of a container 201, not shown, into which opens said outlet tube.
  • the knife-holder tool 160 is provided with a presser foot 162 mounted on a spring 163, capable of holding the strip 10 of material pressed against the counter-knife 170 during the cutting of the strip and up to 'when the knife holder tool 160 is completely disengaged. This prevents the strip 10 from advancing while the knife 161 is not yet completely disengaged.
  • the stroke of the presser foot 162 must be adjusted as a function of the cutting height of the knife 161.
  • the machine object of the invention will be coupled to another machine located upstream, such as a thermoforming machine for example.
  • the strip 10 is then supplied to the machine of FIG. 1a in steps, from 300 to 400 mm approximately, at an average speed of advance of the order of 4 m / min.
  • the jack 110 is adjusted to ensure an average speed of advance of the machine slightly higher than that of the thermoforming machine, 5 m / min for example.
  • the advance of the machine being of the order of 30 mm, therefore significantly smaller than the advance of the thermoforming machine, it is advantageous to provide means 300 for regulating the entry of the strip 10 of material in the feed and cutting means 100.
  • FIG. 1a gives an embodiment in which said input regulation means 300 comprise a first fixed pulley 301, a movable pulley 302 and a second fixed pulley 303, the movable pulley 302 being subjected to a force F3, here its own weight, able to tension the strip 10 of material so as to absorb excess lengths of strip coming from upstream of the machine, corresponding to the steps of the thermoformer.
  • a force F3 here its own weight
  • the movable pulley 302 descends in the direction of the bottom of the double arrow F4 until that the excess strip is stretched between the fixed pulleys 301 and 303. Then, the advance means advancing the strip 10 towards the exit of the machine, the length of the strip between the fixed pulleys decreases and the pulley mobile goes up in the direction of the top of the double arrow F4 until it eventually reaches a position of minimum length for winding the strip 10, identified by a switch K1 for supplying the jack 110. At this time the machine, not having enough length of tape, stops and waits for the arrival of a new length of tape equal to the pitch of the upstream thermoformer. Pulley 302 goes back down and releases switch K1 which restarts the jack.
  • the movable pulley 302 also has a maximum stroke position, identified by a switch K2 connected to an alarm: horn, light signal, etc. It is thus possible to detect a break in the belt 10 or a stop untimely machine.
  • FIG. 1a We can also observe in Figure 1a the presence of a movable plate 410, integral with the knife holder tool 160.
  • This plate 410 is intended to allow the isolation of the machine mechanism and the sealing of the volume 400 of recovery of the pieces of cut strips, this when in the regulation phase of entry of the strips at the advance step of the thermoforming machine, said knife-carrying tool 160 is stopped in the low position, the movable pulley 302 having reached the switch K1 . At this time, suction or blowing means are put into operation so as to evacuate the cut pieces present in the volume 400.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
EP19940401081 1993-05-12 1994-05-13 Maschine zum Vorbereiten von Bahnen um diese zu Vernichten Expired - Lifetime EP0624440B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9305890 1993-05-12
FR9305890A FR2705093B1 (fr) 1993-05-12 1993-05-12 Machine pour conditionner des bandes continues de materiau en vue de leur elimination.

Publications (2)

Publication Number Publication Date
EP0624440A1 true EP0624440A1 (de) 1994-11-17
EP0624440B1 EP0624440B1 (de) 1997-10-08

Family

ID=9447184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940401081 Expired - Lifetime EP0624440B1 (de) 1993-05-12 1994-05-13 Maschine zum Vorbereiten von Bahnen um diese zu Vernichten

Country Status (4)

Country Link
EP (1) EP0624440B1 (de)
DE (1) DE69406044T2 (de)
ES (1) ES2108950T3 (de)
FR (1) FR2705093B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842795A1 (fr) * 2002-07-23 2004-01-30 Additif Dispositif pour conditionner des bandes continues de materiau telles que les lisieres generees sur des unites de thermoformage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251312A (en) * 1938-06-18 1941-08-05 Carl M Yoder Trimming and/or cutting mechanism
FR980357A (fr) * 1943-02-08 1951-05-11 Dispositif de tension automatique du papier
JPS5969340A (ja) * 1982-10-08 1984-04-19 Taiyo Shokai:Kk 合成樹脂フイルム帯の移送制御方法及びその装置
DE4021573A1 (de) * 1989-08-08 1991-02-14 Karl Marx Stadt Maschf Vorrichtung zum abfuehren und zerkleinern von beschnittstreifen kalandrierter folie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251312A (en) * 1938-06-18 1941-08-05 Carl M Yoder Trimming and/or cutting mechanism
FR980357A (fr) * 1943-02-08 1951-05-11 Dispositif de tension automatique du papier
JPS5969340A (ja) * 1982-10-08 1984-04-19 Taiyo Shokai:Kk 合成樹脂フイルム帯の移送制御方法及びその装置
DE4021573A1 (de) * 1989-08-08 1991-02-14 Karl Marx Stadt Maschf Vorrichtung zum abfuehren und zerkleinern von beschnittstreifen kalandrierter folie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 177 (M - 317)<1614> 15 August 1984 (1984-08-15) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842795A1 (fr) * 2002-07-23 2004-01-30 Additif Dispositif pour conditionner des bandes continues de materiau telles que les lisieres generees sur des unites de thermoformage
WO2004011353A2 (fr) * 2002-07-23 2004-02-05 Sarl Additif Dispositif pour conditionner des bandes continues de materiau telles que les lisieres generees sur des unites de thermoformage
WO2004011353A3 (fr) * 2002-07-23 2004-04-08 Sarl Additif Dispositif pour conditionner des bandes continues de materiau telles que les lisieres generees sur des unites de thermoformage
US7140168B2 (en) * 2002-07-23 2006-11-28 Sarl Additif, Societe A Responsabilite Limitee Device for packaging continuous webs of materials such as selvedges generated on thermoforming units

Also Published As

Publication number Publication date
DE69406044D1 (de) 1997-11-13
ES2108950T3 (es) 1998-01-01
FR2705093A1 (fr) 1994-11-18
EP0624440B1 (de) 1997-10-08
DE69406044T2 (de) 1998-01-29
FR2705093B1 (fr) 1995-08-04

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