EP0138689B1 - Maschine zum Verschliessen von Behältern mittels eines Films - Google Patents

Maschine zum Verschliessen von Behältern mittels eines Films Download PDF

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Publication number
EP0138689B1
EP0138689B1 EP84401947A EP84401947A EP0138689B1 EP 0138689 B1 EP0138689 B1 EP 0138689B1 EP 84401947 A EP84401947 A EP 84401947A EP 84401947 A EP84401947 A EP 84401947A EP 0138689 B1 EP0138689 B1 EP 0138689B1
Authority
EP
European Patent Office
Prior art keywords
frame
machine according
heating plate
machine
guides
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
Application number
EP84401947A
Other languages
English (en)
French (fr)
Other versions
EP0138689A2 (de
EP0138689A3 (en
Inventor
Jean-Piere Auguste Morard-Chataignier
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.)
Constructions De Materiel Metallique Et Electrique - Socamel SA Ste
Original Assignee
Constructions De Materiel Metallique Et Electrique - Socamel SA Ste
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 Constructions De Materiel Metallique Et Electrique - Socamel SA Ste filed Critical Constructions De Materiel Metallique Et Electrique - Socamel SA Ste
Priority to AT84401947T priority Critical patent/ATE31688T1/de
Publication of EP0138689A2 publication Critical patent/EP0138689A2/de
Publication of EP0138689A3 publication Critical patent/EP0138689A3/fr
Application granted granted Critical
Publication of EP0138689B1 publication Critical patent/EP0138689B1/de
Expired legal-status Critical Current

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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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing

Definitions

  • the present invention relates to a machine for closing containers such as trays containing food.
  • the problem is to close the tray with the above film.
  • machines comprising two parallel endless chains, driven in synchronism supporting plates each having at its center an opening in which a tray is introduced which is retained by its collar.
  • a film is placed above the plates and the latter pass intermittently under a heating plate which obtains the sealing of the trays.
  • Document FR-A 2332178 also discloses a machine comprising a cradle, in the form of a box, on the upper part of which the tray rests by its four sides.
  • This box comprises a movable partition constituting one of the sides of the box on the upper edge of which rests one of the edges of the tray. It is however necessary that the trays have the same width.
  • the purpose of the present invention is to allow, by judicious adjustment of the machine organs, to close trays having different dimensions.
  • the invention relates to a machine for closing, using a plastic film or the like, containers, such as rectangular trays, having a peripheral collar, said machine comprising support members, on which the collar rests, and a heating plate, (As of document FR.A. 2 332 178), characterized in that it comprises two guides (7) parallel, the spacing of which is adjustable, on each of which rests one of the edges of the container and in that the guides are interrupted at a point along their length, situated under the heating plate (21), said interruption creating a space (19) in which an anvil (20) movable in height is disposed.
  • Figure 1 is an elevational view of the machine of the invention
  • Figure 2 is the top view of Figure 1, the heating plate and the film reserve not being shown;
  • Figure 3 is a sectional view taken along line II I-III of Figure 2;
  • Figure 4 is a sectional view taken along the line IV-IV of Figure 3;
  • Figure 5 is a view similar to that 4 showing the position of the movable members during the sealing of the trays;
  • Figure 6 is a partial perspective view showing in particular the guides while the anvil and the heating plate are not shown;
  • FIGS 7, 8, 9 are partial and schematic views showing the operation of the machine.
  • 1 shows diagrammatically the frame of the machine comprising two slides 2, parallel and fixed on which sleeves 3 slide, made integral with a frame 4 whose movement is controlled by a jack 5.
  • the stroke of the frame 4 is limited in one direction by the stretched position of the jack 5 and in the other by a stop 6 with adjustable position (FIG. 1).
  • the frame 4 supports two parallel guides 7, with variable spacing interrupted at a point along their length, for reasons which parallel, further and delimit two guide segments 7a and 7b respectively.
  • Each segment 7a is formed by the upper part of a rectangular frame arranged perpendicular to the frame 4 and the lower side 7'a of which extends at 8 beyond its end 9 to support two parallel and rectangular plates 10 whose edges upper form the segment 7b in combination with bars 11, with variable spacing but fixed longitudinally with respect to the chassis.
  • the guides 7 serve to support the lateral edges of the trays B and it is understood that by modifying the spacing of said guides, it is possible to admit trays having different dimensions.
  • this result is obtained using two pairs of rods 12, the rods of each pair being hinged together by one of their ends at 13 and 14 on a frame 15 disposed under that 4 and, by each of their other ends, at side 7a '.
  • the frame 15 slides on a guide 16 of the frame 4 extending parallel to the guide 7.
  • the displacement of the frame 15 is ensured by a screw 17, with a handwheel 18, which is screwed into the frame 4 and immobilized in translation relative to that 15.
  • an anvil 20 movable in height and making it possible to pinch between it and the heating plate 21 situated above the guides 7, the transverse edges of the trays B and the shutter film F.
  • the plate 21 supports the reel D on which the film F, in reserve, is wound.
  • the heating plate 21 is supported by two columns 22 passing through the frame 4 and made integral by their lower end with a cross member 23 to which is fixed the body of a jack 24 whose piston rod is connected to a cross member 25, guided on the columns 22, and supporting, by means of columns 26, the anvil 20.
  • Each column 22 has a shoulder 27, located above the frame 4, under which bears a spring 28 mounted on said column and interposed between said frame 4 and said shoulder 27.
  • the two springs 28 have the function of holding the plate 21 raised.
  • the cylinder 24 is extended, which has the effect of raising the anvil 20 until the crosspiece 25 abuts under the frame 4. At this time, if we continue to extend the cylinder, we lowers the heating plate 21 by compressing the springs 28.
  • the adjustment of the stop 29 determines that of the stop 6 ( Figure 1).
  • the stop 29 is carried by an arm 30, the lower end of which is crossed by a threaded rod 31 linked axially to the frame 1 and which extends at 32, beyond its median bearing 33, to receive a nut 34 for supporting the stop 6.
  • the two threaded parts have a constrictive pitch and the nut 34 is initially positioned so that if L is the distance separating the arm 30 and the bearing 33, the distance separating said bearing and the nut 34 is equal to L + E, expression in which E is the width of the space 19 separating the segments 7a and 7b. In practice, E represents the width of the anvil 20.
  • the trays are supported only by two edges which rest on the guides.
  • the trays are generally made of a thin plastic material, the latter is not rigid enough at the level of the flange to ensure the maintenance of the tray when it is full. It is therefore necessary that the bottom of the tray is supported on a support.
  • this result is obtained by means of two parallel support bars 36 (FIG. 3), movable in height and extending downstream of the heating plate by an endless belt 37.
  • the two support bars 36 rest freely by their front end 38 on a crosspiece 39, joining the ends of two rods 40 articulated at 41 on the frame, and they can slide by their rear end 42 in a slide 43 secured to the frame of the mat 37, the axes 44 of which are carried by links 45 and 46 identical to those 40 and articulated at 47 and 48 on the frame (FIG. 1).
  • the pivoting of the connecting rods 45 and 46 is determined by a connecting rod 49 uniting extensions 50 and 51, extending beyond the axes 41 and 47 the connecting rods 40 and 45.
  • each bar 36 is linked in longitudinal translation to the frame 4.
  • each bar has a fork 52 engaged with a transverse axis 53 of the frame 4.
  • the motor 54 of intermittent drive of the discharge belt 37 is carried by one of the links 45-46 (that 45 in the drawings).
  • the rods 40 are blocked, by any appropriate means, according to the inclination required by blocking, for example, the operating lever 55 of said rods relative to the frame (device not shown because within the reach of ordinary skill in the art).
  • a guide 57 (identical to those 7) is fixed to the frame 4 (shown) in phantom in Figure 6).
  • the support surface of the bottom of the trays is formed by one of the bars 36.
  • the guide 56 is fixed in the median longitudinal plane of the machine if the two small trays are identical but it is understood that it is possible, if not, to offset it laterally relative to the median plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Closing Of Containers (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Claims (15)

1. Maschine zum Verschliessen von Behältern von der Art rechteckiger Lebensmittelgefässe mit durchgezogenem äusserem Kragen durch eine Plastikfolie oder ähnlichem, wobei besagte Maschine Auflagen für den Kragen besitzt, sowie eine Heizplatte, dadurch gekennzeichnet, dass sie zwei parallel verlaufende Führungen (7) besitzt, deren Abstand voneinander verstellbar ist und auf deren Rändern der Behälter aufliegt, sowie dadurch, dass diese Führungen an einem Punkt ihrer Längsrichtung unter der Heizplatte (21 ) unterbrochen sind, wobei besagte Unterbrechung einen Freiraum (19) bildet, in dem ein der Höhe nach verstellbarer Amboss (20) untergebracht ist.
2. Maschine entsprechend Patentanspruch 1, dadurch gekennzeichnet, dass Mittel vorgesehen sind, um die Vorderseite des Behälters unter der Heizplatte zu plazieren und besagten Behälter so zu versetzen, dass seine Hinterseite unter der Heizplatte liegt.
3. Maschine entsprechend einem der Patentansprüche 1 oder 2, dadurch gekennzeichnet, dass der Boden des Behälters auf einer Stützfläche aufliegt, die der Höhe nach verstellbar ist und aus zwei parallel verlaufenden Stäben (36) besteht.
4. Maschine entsprechend einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, dass die Führungen (7) von einem Rahmen (4) getra- gen werden, der über einen Druckzylinder (5) in Längsrichtung zwischen zwei Positionen verstellt werden kann, deren eine der Endstellung der Stange des besagten Druckzylinders entspricht und die andere von einem verstellbaren Anschlag (6) bestimmt wird, dessen Position von der Länge des zu versiegelnden Behälters und der Breite des Amboss (20) abhängt.
5. Maschine entsprechend einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, dass die Unterbrechung (19) auf jeder Führung (7) zwei Führungssegmente (7a, 7b) abgrenzt, wobei das vordere Segment von der Oberseite eines rechtwinkligen Rahmens gebildet wird, dessen Unterseite (7a') über den Rahmen hinaussteht, um zwei parallele rechtwinklige Platten (10) zu tragen, deren Oberkanten das hintere Segment (7b) in Verbindung mit den Stäben (11) bildet, die dazwischen parallel zum Rahmen (1) der Maschine eingefügt und befestigt sind.
6. Maschine entsprechend einem der Patentansprüche 1 bis 5, dadurch gekennzeichnet, dass die Heizplatte (21) von zwei Säulen (22) getragen wird, die den Rahmen (4) durchstossen und an ihrem unteren Ende auf einem Querträger (23) befestigt sind, der einen Druckzylinder (24) trägt, dessen Kolbenstangenende mit einem anderen Querträger (25) verbunden ist, die durch die besagten Säulen (22) geführt wird und den Amboss (20) trägt, wobei besagte Säulen (22) weiterhin je eine Schulter besitzen, auf der je eine Feder (28) aufliegt, die auf dem Rahmen (4) liegt.
7. Maschine entsprechend einem der Patentansprüche 4 bis 6, dadurch gekennzeichnet, dass die Abspulvorrichtung (D), auf der die Verschlussfolie aufgerollt ist, von dem Rahmen (4) getragen wird.
8. Maschine entsprechend einem der Patentansprüche 4 bis 7, dadurch gekennzeichnet,dass Mittel vorgesehen sind, um die Folie F zeitweilig gegenüber dem Maschinenrahmen (1) festzustellen, wenn der Rahmen (4) zurücksetzt und nach dem Verschliessen des hinteren Teils eines Behälters.
9. Maschine entsprechend einem der Patentansprüche 3 bis 8, dadurch gekennzeichnet, dass jeder der Stützstäbe (36) mit seinem Vorderende (38) frei auf einer Querstange (39) aufliegt, die die Enden der beiden Schwingarme (40) verbindet und mit ihrem hinteren Ende (42) in einer Gleitschiene (43) hin und her gleitet, die wiederum fest mit der waagrechten Oberseite eines Parallelogramms verbunden sind, das verstellbar ist und über eine Kuppelstange (49) mit den Schwingarmen (49) verbunden ist.
10. Maschine entsprechend Patentanspruch 9, dadurch gekennzeichnet, dass die Gleitschienen (43) die Verlängerung der Armatur eines Endlosbandes (37) ist, das die Stützstangen (36) verlängert.
11. Maschine entsprechend einem der Patentansprüche 4 bis 10, dadurch gekennzeichnet, dass die Stützstangen (36) in Translation mit dem Rahmen (4) verbunden sind.
12. Maschine entsprechend einem der Patentansprüche 1 bis 11, dadurch gekennzeichnet, dass die Positionierung des jeweiligen Behälters unter der Heizplatte (21 ) durch einen verstellbaren Anschlag (29) gewährleistet wird.
13. Maschine entsprechend Patentanspruch 12, dadurch gekennzeichnet, dass die Einstellung des Anschlags (29) für die Behälter und die des Anschlags (6) für den Rahmen (4) über eine zweigängige Schnecke erfolgt, die gegenläufige Gewinde (31,32) aufweist.
14. Maschine entsprechend einem der Patentansprüche 1 bis 13, dadurch gekennzeichnet, dass sie zwischen den Führungen (7) eine gleiche Führung (56) besitzt, die jedoch fest gegenüber dem Rahmen (4) ist.
EP84401947A 1983-10-07 1984-09-28 Maschine zum Verschliessen von Behältern mittels eines Films Expired EP0138689B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401947T ATE31688T1 (de) 1983-10-07 1984-09-28 Maschine zum verschliessen von behaeltern mittels eines films.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8315978A FR2553059B1 (fr) 1983-10-07 1983-10-07 Machine pour obturer des recipients a l'aide d'un film
FR8315978 1983-10-07

Publications (3)

Publication Number Publication Date
EP0138689A2 EP0138689A2 (de) 1985-04-24
EP0138689A3 EP0138689A3 (en) 1985-06-26
EP0138689B1 true EP0138689B1 (de) 1988-01-07

Family

ID=9292923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401947A Expired EP0138689B1 (de) 1983-10-07 1984-09-28 Maschine zum Verschliessen von Behältern mittels eines Films

Country Status (4)

Country Link
EP (1) EP0138689B1 (de)
AT (1) ATE31688T1 (de)
DE (1) DE3468391D1 (de)
FR (1) FR2553059B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2853627B1 (fr) * 2003-04-10 2006-07-28 Nijal Machine de mise en barquettes d'aliments

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792567A (en) * 1971-12-07 1974-02-19 Dixie Packaging Co Inc Heat sealing machine
US3908342A (en) * 1973-10-26 1975-09-30 Fmc Corp Heat sealing machine
FR2332178A1 (fr) * 1975-11-19 1977-06-17 Latoud Michel Appareil a operculer les barquettes pour l'emballage des produits alimentaires ou analogues

Also Published As

Publication number Publication date
EP0138689A2 (de) 1985-04-24
EP0138689A3 (en) 1985-06-26
ATE31688T1 (de) 1988-01-15
FR2553059B1 (fr) 1986-08-01
DE3468391D1 (en) 1988-02-11
FR2553059A1 (fr) 1985-04-12

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