Device for making liquid-filled bag packages.

State of the art

p0001The invention relates to an apparatus for producing liquid-filled bag packages according to the preamble of claim 1. In a known example from DE-A-2,355,957 device of this kind of filling above the tube former is connected to the filling tube, the far protrudes over the tube former, and the operating rod for the dispensing valve is connected to an actuator cylinder at the upper end of the filling tube.

ADVANTAGES OF THE INVENTION

p0002The device of the invention with the characterizing features of claim 1 has the advantage that space for other means for acting on the packaging material and / or the filling material is available above the tube former by Füllgutzuleitung and the valve operating in the area of ​​the inlet opening of the collar, such as means for mounting of tapping sockets for the contents of the bag packages.

p0003The measures listed in the Uteransprüchen advantageous developments and improvements of the device of claim 1 are possible. Especially advantageous is the measure according to claim 3, with a wall bushing of the actuating lever with its axis of rotation in the wall but without the use of a bearing and a journal is possible, eliminated the leakage problems at this point. Further, a transmitting turbulence to the medium is avoided by the one and buckling membrane. In addition, the membrane is only slightly stressed, so that their life is very long.

drawing

p0004An embodiment of the invention is illustrated in the drawing and explained in more detail in the following description. 1 shows an apparatus for forming, filling and sealing of tubular bags with withdrawal nozzle in perspective view, Figure 2, the molding and filling the apparatus of Figure 1 in cross-section, Figure 3 shows a part of the apparatus of Figure 2 in cross-section in a second operating position and figure 4 shows the operating mechanism of the filling in a simplified representation.

Description of the embodiment

p0005A running from a supply roll, not shown, at least one side heat sealable coated packaging material web 1 is guided over a forming shoulder 10, which it forms a forming tube 11 into a tube. 2 A longitudinal seam sealing jaw pair 12 is welded both inside against inside specified longitudinal edges of the packing material web 1 in a longitudinal seam 3. A cyclically up and abbewegtes cross seam sealing jaw pair 13 divides the tube 2 after filling each a capacity in individual bag packages 4 and pulls the tube 2 by one bag length to from below. In the region of the forming shoulder 10 has a fastening means 15 is arranged, each comprising a dispensing nozzle 5 is fixed at a standstill of the packaging sheet material 1 by heat sealing to the packing material web first The withdrawal connection 5, for example, shown are on a flange 6 per two protruding tubes 7. The molded from a thermoplastic material extraction connection 5 are fitting welded to its flange 6 on the inside of the packaging sheet material with this, their two tubes 7 through holes 8 in the packing material web 1 protrude, which have been punched by a punching device 16 in front of the forming shoulder 10 in the packaging material web first

p0006The form shoulder 10 consists of a the forming tube 11 surrounding with a narrow gap guide or pipe stub 20 with a Befestigangsflansch 21 and from an surrounding the upper inlet opening collar 22, via which and which with the inner side of the pipe socket 20 of joint deflection edge 24 the packing material web 1 in molding the hose 2 running. The upper inlet opening of the pipe socket 20 extends to the longitudinal axis is inclined, so that the collar 22 decreases in the direction of the packing material web 1 from its apex on the inlet side of the web of packing material to the other side. At the low point of the collar 22, on which the two longitudinal edges of the packing material strip 1 inside against inside one upon another, have the pipe stub 20 and the flange 21 a gap 23 through which the advancing strip of packaging material 1 and the hose 2, the projecting longitudinal edges to run.

p0007The fastening device 15 having a seal stamp 26 with a heater 27 and a designed as a counter-punch carrier 28 for the withdrawal nozzle 5 is arranged in the upper region of the forming shoulder 10, with their common effective area is below the apex of the collar 22 (Figure 3). The Seal 26 is disposed on the upstream side of the packaging material web 1 and the carrier 28 on the side of the inlet opening of the forming shoulder 10 transverse to the longitudinal axis thereof displaced. To achieve the Pack Taff web 1 in the operative position are in the pipe socket 20 and aligned in the form of pipe 11 with each other, the shape of the sealing stamp 26 and the carrier 28 and their trajectories matched recesses 29, 30, 31 is provided. For feeding the dispensing nozzle 5 in the work area of ​​the fastening device 15, in particular prior to their carrier 28, above the fastening means 15 a feed device 33 is arranged with a guide channel 34, the end 35 of 11 and the end face of the carrier 28 is located between the mold tube in its retracted position (figure 1). For reciprocating the sealing stamp 26 and the carrier 28 between an initial position in which the two are apart, and an operative position in which the two are pressed against each other (Figure 3), the seal stamp 26 and the carrier 28, each are a hydraulic or pneumatic cylinder actuator 36. To attach a withdrawal nozzle 5 of the seal stamp 26 and the carrier 28 are moved against each other, wherein the carrier 28 at the end 35 of the feed chute 34 a prepared withdrawal nozzle 5 takes over and moving it against the packing material web 1, wherein the two tubes 7 the tapping 5 holes 8 pierce the positioned packing material web 1 and finally the flange 6 is on the inside of the packing material web 1 for the plant, so that when also zugestelltem seal 26 of the flange 6 of the withdrawal connection 5 pressed by the packing material web 1 and sealed by transferring heat on the part of the sealing stamp 26 with this is (figure 3). After a certain duration of pressing the carrier 28 and the seal stamp 26 are retracted back from the operative position to its initial position. To record the tubes 7 of the neck 5 during sealing, the seal stamp 26 two correspondingly arranged blind bores 37 in its end face. For holding a withdrawal nozzle 5 during the transfer suction holes 28 not shown are arranged in the end face of the carrier; but it can also be inserted in the end face of pins which engage in the tubes 7 of the nozzle.

p0008The sealing on a tapping point 5 of the packing material web 1 takes place during standstill of the packaging material web, during which the longitudinal seam 3 is formed by the longitudinal seam sealing jaw pair 12, and the cross-seam sealing jaw pair 13 returns from a lower position to an upper initial position. After closing the Quernaht- seal back couple's 13 this is moved down so that it prefers the hose 2 and the packing material web 1 to a bag length, whereby the the hose 2 outwardly extending tubes 7 pressure tap mestutzens through a longitudinal slot 38 in pipe socket 20 of the mold will shoulder 10 drawn below the recess 29, and wherein the cross-seam sealing jaw pair 13 a bag package 4 divides by applying transverse seams 9 from the hose. 2

p0009To fill in each case a quantity of liquid filling material in the bag packs 4 in the mold tube 11 a filling tube 40 is arranged coaxially, at its lower end a metering valve is arranged 41st This metering valve 41 has a valve seat plate 42 with a plurality of downwardly extending outlet tube 43 and a movable in the fill tube 40 against the valve seat plate 42 valve plate 44th The upper end of the fill tube 40 is slightly below the work area of ​​the fastening device 15 and is there with the forming tube 11 passing transversely through supply pipe 46. In this feed connector 46 in turn leads across a filling line 47, through which the liquid to be filled material is supplied.

p0010For dosing of the individual Füllgutmengen the valve plate 44 is temporarily lifted from the valve seat plate 42nd For this, the valve plate 44 is fixed to a rod 48 which extends in the fill tube 40 up to the feed connector 46 and the upper end is hinged at one end of a lever 50th For actuating the lever 50, an actuating cylinder 51 is articulated at its other end. The fill tube 40 the opposite opening of the feed neck 46 is sealed with a flexible wall in the form of a membrane 52, which is clamped with an annular flange 53 with a flange 54 at the end of the feed neck 46th In the midst of the Mebran 52 is also tightly connected to the lever 50th For pivoting the lever 50 about an axis passing through the center of the diaphragm 52, has the lever 50, at its outside the feed neck 46-extending arm 55 two transverse arms 56, 57. The ends of the transverse arms 56, 57 are connected to handlebars 58 59 is articulated, which are mounted in stationary bearings 60, 61 on the annular flange 53rd In a position, in the closed position of the metering valve 41 59 take the two links 58, a position a in which their longitudinal axes extended today at the center of the membrane 52 cut (Figure 2). By an adjusting movement of the adjusting cylinder 51 the lever 50 is pivoted clockwise, with 59 of the lever 50 is pivoted about a line passing through the center of the diaphragm 52 axis through the described arrangement of the handlebar 58, and the valve plate 44 is lifted from the valve seat plate 42 , To fill a respective amount of liquid in the end of the hose 2, the valve plate 44 is lifted from the valve seat plate 42 respectively during the bringing forward of the tube 2, so that the liquid can flow from the filling tube 40 and through the outlet tube 43 into the clamped end of the tube 2 ,

p0011In addition it should be noted that other shaped withdrawal nozzle on the hose or the molded bag packages can be mounted with the above-described fastening device with a corresponding adjustment of the carrier and the stamp.