FR2499508A1 - CUTTING DEVICE FOR PACKING MACHINE - Google Patents

Abstract

A. CUTTING DEVICE INTENDED TO BE MOUNTED FOLLOWING A "SKIN-PACK" PACKAGING MACHINE OPERATING INTERMITTENTLY AND TO WHICH ARE TAKEN A STRIP OF FILM FROM A ROLL AND INDIVIDUAL CUTTINGS OF CARDBOARD ON WHICH ARE POSED THE OBJECTS TO BE PACKED, OR AT THE FOLLOWING OF A THERMO-FORMING MACHINE, WHICH SHAPES A STRIP OF FILM, A DEVICE SERVING TO DIVIDE EACH MULTIPLE PACKAGING INTO INDIVIDUAL PACKAGING WITH A SUSCEPTIBLE QUIZ AND SLIDING TROLLEY DOES THE CUTTING FACILITY AND A CONTROL PLANT. B. DEVICE CHARACTERIZED IN THAT IT INCLUDES, FIXED ON AN UPPER TRANSVERSAL HEAD 23 MOBILE VERTICALLY, A SECTION OF STEEL TAPE 27 PRESENTING THE CONTOUR OF A TRANSVERSAL ROW OF INDIVIDUAL PACKAGING, AS WELL AS A STAMPING PLATE PLANE 28 ARRANGED ON A BRIDGE 22 AND WITH WHICH THE CUTTING OF STEEL STRIP COOPERATES 27. C. THE INVENTION APPLIES IN PARTICULAR TO SKIN-PACK PACKAGING MACHINES.

Description

1.- 2499508

  The invention relates to a cutting device intended to be mounted after an intermittent "Skin-pack" packaging machine to which a strip of film coming from a roll and individual cuts are fed. of cardboard on which are laid the

  objects to be packaged, or as a result of a thermo-

  forming, which forms in sections a strip of film, a device

  used to divide each multiple package into

  with a trolley capable of sliding horizontally

  and which carries the cutting installation and an installation

control.

  Devices of this type are known by

  example in document DE-AS 23 51 069. In the case of

  described in this document, a long-term cutting

  tudinal is disposed on the input side of the device, installation through which the multiple packages are drawn and then separated in the longitudinal direction. A horizontally slidable carriage carries a gripping means for gripping the product as it is pulled forward of the length of a multiple package, and also carries the transverse cutter constituted by a blade. The carriage is furthermore provided with a control device, so that when it goes backwards away from the direction of advance, it stops at

  predetermined locations and performs cross-sectional cuts.

dirty.

  The disadvantage of this device is that it can not be implemented for the production of packaging

  so-called "skin-pack" or "blister" hoods

  background with rounded corners. This device can only divide parts with sharp angles, which are not always

accepted on the market.

  This device is relatively expensive because of the necessary installation of longitudinal section. Similarly a pinching means on the carriage is absolutely necessary

  to transport multiple packages.

  We also know from document DE-GM

  79 04 734, a device whereby the totality of a packaging

  Multiple ge can be extracted and separated. This device is not

  However, it is not intended to subdivide a multipack-

  subdivision is carried out if necessary, on a separate device

2.- 2499508

ready.

  The object of the invention is to create for divi-

  multiple packaging, a device such as packaging

  individual with rounded corners can be made.

  In addition, the construction of the device should be further simplified.

  fied. High stamping effort should not be necessary.

  For this purpose, the invention relates to a device

  characterized in that it comprises, fixed on a transverse head

  the vertically movable upper, a steel strip cut

  presenting the outline # a transverse row of

  as well as a flat stamping plate, arranged on

  a bridge, and with which cooperates the cutting of steel strip.

  In this way, the longitudinal section installation can be completely removed. The outline of individual packages

  can be varied and may in particular be provided with rounded corners.

  The cutting of steel band also offers the advantage

  that the knife is very narrow and tall, so that it can

  be introduced between the walls very close to hoods "blister".

  When a cross-cutting knife likely to be

  down is used for the cross section, this knife must, for reasons of stability, have a certain thickness, and the cover "blister" must have a flat edge of a corresponding width below which we can not go down,

  but that is not always necessary.

  A pinching means on the carriage is in

  in most cases, not necessary because the transport of the

  Multiple lage via the carriage, can be performed when the cutting of steel strip is lowered. This cut is introduced into the band over almost the entire width

  and drives it safely. Only in exceptional cases

  when, for example, a heavy product is packaged

  in "skin-pack" and must be transported, that means of pin-

  Additional side buckles have an advantage.

  According to a particular embodiment of the invention,

  tion, it is proposed that the strip steel cut placed in front of the stamping plate is not rigidly disposed

  but slightly supple. It is thus possible to provide a

  positive control with two probes and communication

  related to these probes, which prevent damage to the product to be wrapped when the strip steel cut is lowered.

at a wrong location.

  The invention will be explained in more detail

  with reference to the attached diagrammatic drawings in

  which: - Figure 1 is a side view of the device in partial section, - Figure 2 is a cross section of the device in the trolley area, - Figure 3 is a top view of packaging

skin-pack gathered on a band.

  On a chassis 1 base is arranged to post

  fixed, a motor 2 which drives, via a cat-

  A chain 7 passes over the chain wheel 9 placed on the shaft 8 and on the chain wheel 10, so that when the rotation of the chain wheel 6, the chain wheel 9 is also rotated. At chain 7 is fixed a

  carriage 11 slidably mounted on horizontal guides 12.

  A conveyor belt 13 passes over the shaft 4 and onto the countershafts 14 to 20, the last four shafts being mounted on the carriage 11. On the drive of the shaft 4 is incorporated a free wheel 21, so that the shaft 4 is driven only in one direction and remains motionless when walking

behind the engine 2.

  The carriage 11 consists of the bridge 22, the

  upper transverse head 23, of the inferior transverse head

  24 and columns 25 connecting these organs. Between the head

  lower crossbar 24 and the bridge 22 is mounted a drive

  The knee pad 26 is known per se and will not be described in more detail and may develop a high stamping force in its end position. On the crosshead 23 is fixed

  a section of steel strip 27, which in cooperation with a

  stamping 28 connected to the bridge 22, separates from the band 30 the individual packages 29. If necessary, a holding member

  downwardly mounted on springs which comes into lateral

  on the band 30, is connected to the transverse head 23.

  According to a particular embodiment of the invention,

  the stamping plate 28 is flexibly mounted within about 5 to 10 mm, for example by being supported on springs 32 and being guided through

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  4.- axes 33. Via a probe 34, the position of the stamping plate 28 is detected, a sensor 35 detects the level of the crosshead 23 and thus the cutting edge level of steel strip 27, Starting from the position shown in Figure 1, the device operates as follows. When the transverse head 23 is lowered, the carriage 11 moves to the right, then moves the band 30 and pulls the length of a multipack out of the skin-pack packing machine or out of the machine. the thermoforming unit, identified by reference 36. A control device is provided

  the stop of the truck in the position on the right. During the trip

  transporting the carriage 11 to the right, the shaft 4 also rotates, the conveyor belt 13 also moves to the right and the individual packages already stamped on this belt are transported further, When the carriage 11 reaches the position on the right, the strip steel cut 27 moves upwards and the carriage 11 moves to the left of a pitch L of the position 1 in the position II (Figure 3) 9 because the engine 2 is connected in reverse. During this movement, the shaft 4 does not rotate, the conveyor belt 13 is stopped. If necessary, this can be obtained by another free wheel in a bearing of one of the countershafts 14 to 16. In the position II, a

  stamping is carried out, ie a row of packaging-

  individual is separated. Then the carriage moves to position III, stamp, moves to position IV, stamp # moves to position V, stamp and remains there in the closed position so that after completion of training, it can

  pull the following multiple packs to the right.

  To avoid that in case of erroneous position of the carriage 11 with respect to the strip 30, the strip steel knife cuts, for example, in the middle of the product to be packaged and that damage thus occurs on the knife and / or the product to be packaged, the stamping plate 28 is mounted in a flexible manner and via the feelers 34, 35, the position of this stamping plate 28 relative to the head

  upper transverse 23, is detected. If the plaque

  page 28 is lowered before the transverse head 23 has been detected by the probe 35, the downward movement of the

5.-. 9 5.

  cutting steel band 27, is immediately stopped. The accompanying race must then be less than the race of

  springs of the stamping plate 28, to prevent breakage.

  Of course, the probe 35 can also detect the posi-

  It can also detect the position of the lower transverse head 24, the important point being the relative position of the cutting edge of the cutting edge 24. strip steel relative to the stamping plate 28. The stamping plate 28 must begin to yield only when the

  Strip steel knife reaches the surface of the band 30.

  If it gives up earlier, the drive 26 is stopped because then an object is between the cutting edge and the surface of the strip 30.

  The correct movement of the carriage 11 is ensured

  by a control device. For example, a com cam

  Mande 37 is fixed on the carriage 11, this cam acting on adjustable switches 38 to 42. An easy adaptation to different dimensions of the individual packages is thus

possible this way.

  As the multipack is stamped in strips,

  the stamping effort required is only a fraction of the

  port to that which requires a total stamping.

  When individual packages are relatively

  small, it is of course possible to provide the steel cut in strip 27 so that it separates for each

  run two transverse rows of individual packages.

6.- 24? 95%

Claims (4)

CLAIMS I   1.- Cutting device intended to be mounted as a result of an "ISkin-rack" packaging machine: operating intermittently and to which are fed a strip of film from a roll and individual cuts of cardboard on which are placed the objects to be packaged, or following a thermoforming machine, which forms in sections a strip of film, dispos: tif used to aiviser each multiple package in individual packages, with a carriage slidable horizontally and which carries the cutting installation and a control installation, characterized in that it comprises, fixedSée on a top transverse head (23) movable vertically, a cut   of steel strip (27) having the outline of a transverse row   of individual packaging, so that a stamp plate   flat page (28), arranged on a bridge (22), and with which   cooperates the cutting of steel strip (27).   2.- Cutting device according to the claim   1, characterized in that the stamping plate (28) is now   flexibly on the deck (22) by way of spells (32).   3. Cutting device according to claim 2, characterized in that it comprises feelers (34, 35) for detecting the position of the stamping plate (28) in relation   with the cutting edge level of the steel strip cut (27).   4.- Cutting device according to any one   Claims 1 to 3, characterized in that it comprises   disposed on the upper transverse head (23), ur. organ   holding down (31) mounted on springs.