DE1869169U - DEVICE FOR THE PRODUCTION OF BOTTLES AND OTHER CONTAINERS FROM THERMOPLASTIC PLASTICS. - Google Patents

Description

.., utility model - registration

"the company"

-. Kautex plant Reinold Hagen, Hangelar via Siegburg / RhId,

'. "Device for the production of bottles and other containers made of thermoplastics »"

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The invention relates to a device for the production of bottles and other containers made of thermoplastic material, consisting of a screw or other extrusion press with a downwardly directed annular spray nozzle zu.m pressing out a hose or a bladder, a multi-part hollow shape, the parts of which in a horizontal plane against each other can be guided, as well as a blower nozzle, the outer surface of which is used to calibrate the ^ bottle neck and which carries a higher and lowerable part of the larger diameter knife at its end facing away from the bottle formed part of the larger diameter of the clear ^: feite corresponds to the shaped hole for the bottle neck. The ring-shaped piston can be a step-shaped thickening of the blow nozzle

be. It is also possible to independently move the piston along the air nozzle to arrange this movable. ■

In addition, the annular piston surrounding the blow nozzle can be equipped with a

know

According to the invention, a hose is first made from the spray nozzle 10 of an extruder or other extrusion press pressed out vertically downwards »A short distance below the spray nozzle is the two-part hollow mold, its halves 12 and 13 have cutting edges 14 on their mutually facing edges » The -Fo rinnest it correspond to the shape of the bottle »Besides, can cooling channels 15 may also be arranged in the mold halves 12 and 13, through which cold water or another coolant passed to achieve faster cooling of the shaped bottle can be. The calibration mandrel acts with the hollow form 12, 13

s mine, which has a channel 17 for the compressed air through which a

the bottle is to be inflated »The diameter of the upper end 19 of the calibration mandrel corresponds to the inner diameter of the neck of the bottle to be manufactured. This part of the blow nozzle is surrounded by an annular piston 20, the corresponding 1 to 4 show a stepped shoulder of the press mandrel represents »Furthermore, the mandrel 16 carries a stop 21 that passes through an annular groove 22 is separated from the step-shaped thickening 20 »It is also possible in place of the stop 21 in the lifting and Seuken causing mechanism an optionally adjustable To install a device by which the top dead center position of the calibration mandrel is determined. »The piston 20 has a diameter

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of the clear W _o of the bottle neck bore 23 corresponds ite "

After the hose 11 in the position sketched in FIG. 1 in dis Form 12, 13 is introduced, the lower end of the tube at least extends into the neck part 23 of the hollow mold, the latter closes in the manner sketched in FIG. 2. It will Above all, the encompassed hose section 11a in the bottom of the hollow form sheared off at 24, closed and welded at the same time »

- 4 -

A knife 25 can cut through the tube 11. Then, as can be seen in FIG. 3, the calibration mandrel 16 is moved up into the mold. The annular piston step 20, which forms the annular channel between the blow nozzle 19 and the wall 23 of the mold 12, 13, compresses the material of the hose section 11a with the effect that the wall thickness of the hose increases at least along the length of the bottle neck »Das Material is pressed between the blow mandrel 19 and the wall 23 of the mold until the press mandrel 16 finally reaches the end position sketched in FIG. The bottle neck is now precisely shaped and limited on all sides. 4 shows that ^: on the finished bottle, the wall thickness along the length of the bottle neck 25 is greater than on the hose section 11a or at other points on the finished bottle 26 when the annular piston 20 enters the space 23 of the mold 12, 13 sheared-off excess of the plastic is now in the annular channel Ti.If the bottle 26 has cooled down sufficiently and thus sufficiently solidified, the mold 12, 13 can be opened and the finished bottle 26 can be removed from the blow nozzle 19 of the press mandrel 16 During the compression * · «-» - ctes bottle neck material 25, the rewinde 27 on the outside of the bottle neck has also been precisely formed.

According to FIG. 5, the blow nozzle 28 and the mandrel with the annular one Piston surface 20 as two separate, concentrically arranged with one another Parts formed. The piston 20 slides on the blow nozzle 28. The two parts can be separated from each other, in the vertical direction be moved. With the help of this device, a bottle 26 is produced in a manner similar to that shown on hand 1 to 3 and 4 has been described. line deviation exists only insofar as the nozzle 28 Sür moves into the un-

tere end of the hose or the hose over the corresponding raised nozzle 28 is guided, whereupon after 'the closing of the mold and possibly during the simultaneous Introduction of the compressed air into the interior of the enclosed hose section 11a the mandrel 20 is moved upwards along the blow nozzle 28 is used to ensure that the bottle material is pressed along the length of the Bottleneck 25 to effect. The blow nozzle 28 also has a circumferential groove 35 into which material also enters.

The device according to FIG. 1 of the drawing is used to manufacture bottles, a tube closed at the bottom, that is to say a bladder 30, being assumed. Such a bubble can be formed in a simple manner "by squeezing off the hose below the spray nozzle by two knives that are moved towards one another like scissors. The hollow shape 12, 13 according to FIG. 6 is the same as FIGS. 1 to 4" there is only one deviation insofar as the blow nozzle 32 is delimited on the top by a cone tip 33. The blow channel 17 merges below the cone tip 33 into the bores 34 ramped mandrel. 20, 32, whereby first the conical tip 33 penetrates the bladder on its after swept down portion. the further molding operation then takes place in exactly the same way, _{W e described ail} reference to FIGS. 1 to 4 j_. Before All things also in this case causes the ring piston 20 _{f to} compress the bottle material along the length of the bottle neck between the wall parts 23 of the hollow mold 12, 13 and the outer surface of the Blow pin 32. - The described method is not limited to the production of bottles, - but can be used in the same way in the production of other hollow bodies.

Claims (1)

1p device for the production of bottles or other hollow bodies Made of thermoplastic material, consisting of a screw or other extrusion press with an upward-facing one ring-shaped spray nozzle for squeezing out a hose or a bladder, a multi-part hollow shape, the parts of which in horizontal Level can be brought against each other as well as a blower nozzle, the outer surface of which is used to calibrate the neck of the bottle and the end facing away from the bottle body is a part of larger diameter that can be raised and lowered in the vertical direction carries, characterized in that the outer diameter of the part designed as a piston (20) has a larger diameter the clear width of the shaped bore (23) for the bottle neck 'corresponds. . "..2 *; Device according to claim 1, characterized in that the annular piston (20) "a step-shaped thickening of the Blow nozzle (19, 28, 32) is. 3. Device according to claim 1, characterized in that '■ "-.' - - t the annular piston 020). surrounds the nozzle (28) in the shape of a sleeve and is movable independently of this. 4t device according to claim 1, - characterized in that the The annular piston (20) is provided with a stop edge (21) which extends on the End of the piston stroke z. B «against the wall of the multi-part iff- HIT ψ. '.i'i - 2nd Form (12, 13) stösat. 5. Apparatus according to claim 4, characterized in that . Between the single piston (2.0) and the stop (21) an annular groove (22) is attached to accommodate any material waste that may arise.