DE1611980A1 - Process for the production of round and oval tubes and tube bodies from foils with a shoulder piece at the head end of the tube - Google Patents

Description

Process for the production of round and oval tubes and tube bodies made of foils with a shoulder piece at the top of the tube.

The invention relates to a method for producing round and oval tubes and tube bodies made of foil with an axially directed shoulder piece at the head end of the tubes, whereby an automation of this process is achieved.

Ne ¢ h the known manufacturing process for tubes made of plastic, made of aluminum-coated plastic, made of aluminum-paper-coated plastic, etc. -coated plastic, the tube is the starting point for the manufacture of tubes. So far, this was done in the extrusion process or from foils on the pipe drawing device etc. manufactured. The tube was then cut into pieces the length of a tube, which are placed on a mandrel and provided with a shoulder piece.

For all of this work, more or less manual work is required, manufacturing is time consuming and expensive. Further defects in this processing are the tolerances of the hose produced in this way, which are reflected in the subsequent Work adversely. Tubes with a very small diameter are after the known manufacturing processes are very difficult or difficult to manufacture.

According to the invention, reference is made to the pipe production mentioned above as well as the cutting into pieces and the flaring dispensed with. The slide is immediate closed around a mandrel and remains on this mandrel until all subsequent, work necessary to complete the tub has been completed. The subsequent Work naturally also includes attaching the shoulder piece as a closure of the ube head, screwing on or pushing on the hat etc. w.

The longitudinal seam can be closed in all possible ways, such as the effect of heat from hot wedges, high frequency, ultrasound, induction welding, Gluing, sealing, applying plasticized plastic and other things to name only the most important.

The same applies to the closing of the tube case with the shoulder piece. In addition to the joining processes listed, there is also the rotation welding process, injecting a shoulder piece, injection molding or injection molding around it a prefabricated shoulder piece, or the compression molding of a shoulder piece made of pre-plasticized material. All shoulder fastening parts can be used here consist of one or more parts. The plasticization of the material can of course also take place on the tube body. For attaching the shoulder piece inside or on the outer edge of the tube body or for inserting the tube body edge into the Shoulder piece, so that it encloses and covers the edge of the tube, can also the aforementioned welding, gluing, sealing or injection molding processes are used come. The closure of the tube body and the necessary shaping into one So shoulder piece with emptying approach can be done with all possible methods. Of course, instead of a shoulder piece with a drainage attachment, the Tube body can be closed with a lid, creating a standing or standing tube is formed, in which either the lid or the tube body for emptying must be cut.

Preferably, the film for the tube body comes in the form of a tape from a The roller and the tube body are welded to the weld seam from this separated. at the weld seam separated from it. Of course the separation can also take place before or during the welding. Likewise is It is not binding that the film comes in tape form from a roll, the film can can also be processed directly by the manufacturing machine. The slide can too can be obtained by slicing one. This has the advantage that you can produce of round tubes hose can be used in which the tolerances of the hose are so big that a flowing production is not possible in an efficient or elegant way is.

During the entire production period, the mandrel remains in the tube envelope, thereby fixing it in place and is carried out until all subsequent work has been completed. The film is generally printed on before processing. -If the film was not previously printed, you can print now. After the above-mentioned completion, the tube is pulled from the mandrel, counted and placed in packaging boxes, or the closure seam is provided at the bottom when the tube is filled through the head piece. The tube can also be provided with a standing base, resulting in a bottle-like tube.

The closing of the longitudinal seam on the tube body can be caused by all seam formations, i.a. also by the additional application no. 113515 X / 39 A3 of 12.12.1967 mentioned, are formed.

Another embodiment of the invention is the seam inward to relocate or press to get a beautiful, closed exterior. at With heavily bulky seams, the tube mandrel has a groove into which the Invest the whole thing is pressed into the seam. To avoid getting stuck on the tube mandrel, According to the invention, the film can be closed at a certain distance on the mandrel will. This creates a plumb bob with which you can also determine the tube diameter can change within limits, d. that is, you can expand it, another advantage of the The invention is that tubes with small diameters can also be produced, which can no longer be produced on a pipe drawing machine.

Another advantage of the invention is that you do not have to go for every tube length a mandrel of different lengths is required when attaching the shoulder strap. this is possible because the mandrel is extremely long and the film is fed in this way is that one edge always occupies the same position on the mandrel. according to one of the possible Ausfünfungsformen the tube is on the mandrel by means of a clamp in the predetermined held in position until it is connected to the shoulder piece. It goes without saying that the mandrel at its head end after the welding or deformation process of the shoulder piece to be attached is designed so that it is z. 13. In the injection molding process is designed as a shape, etc., when welding as an electrode, sonotrode, etc.

Where it is necessary to attach the shoulder strap, the upper edge of the tube bent inwards. This can be done when using clay composite film be expedient with metal, paper or other layers. To this hanging the To be able to produce the edge are several in one of the possible embodiments Slider provided in a circular shape, which is sawn on the side facing the film and can be moved concentrically to the edge of the tube.

In order to have the possibility of setting tolerances with preprinted film material To compensate in the pressure, a differential gear is in the feed of the film built-in, which is controlled by a light barrier. Differences are reflected in the Laid lengthways.

The principle of the method and an exemplary embodiment are to be based on drawings are explained in more detail according to the invention.

They show: FIG. 1 a schematic representation of the transversely tensioned Foil to the tube mandrel.

2 shows a schematic representation of the formation of the tube hose.

3 shows a schematic representation of the welding process FIG. 4 shows a schematic illustration of the pressing and severing of the film; FIG. 5 shows a schematic representation of pressing the seam onto the tube body; FIG. 6 is a schematic representation Representation of the transfer of the film for unclamping. FIG. 7 is a schematic representation Formation of the tube hose for a double felled seam. FIG. 8 is a schematic Representation of welding of the longitudinal seam and bending of the protruding end.

-Fig. 9 u ,. 19- a schematic representation of the overlapping End and welding to the longitudinal seam.

11 shows a schematic representation of the pressing of the seam onto the tube body with subsequent welding.

Fig. 12 finished tube body with a double fell seam as a longitudinal seam.

Fig. 15 Upsetting head for bending the tube end in section -Fig. 14 Schematically represented press mold for attaching the shoulder piece.

FIG. 15 partial section - form of a Schuiterstückes. FIG. 16 schematic Representation of a turntable for the production of tubes according to the method.

Fig. 17 partial section - molded shoulder piece on the tube body.

The film 1 is pulled off a roll (not shown) and runs to a feed clamp 2, from this to a second clamp 3, which is in a certain Distance from the first is arranged. Terminals 2 and 5 are positioned so that that they can approach or move away from each other.

A slide 4 and 5 is arranged under the clamps, which are move parallel to the clamps. The feed clamp 2 transfers the counter clamp 3 the foil 1. This is done by the fact that the feed gate 2 grips the foil 1 in such a way that -that a short end (Fig. -5 and 6) protrudes from the jaws. In this position the feed clamp a with the clamped film 1 approaches the counter clamp 5, the jaws of which are open (Fig. 6), so that the protruding film end comes to rest between the jaws of the counter-clamp 3. Now close the jaws of the counter clamp 3 while the jaws of the feed clamp 2 open. In this state, both terminals 2 and 5 diverge. -The slider 4 and 5 are in the rest position and are so far apart that the tube mandrel 6 can go through it well.

According to one embodiment, the tube mandrels are on a turntable mounted, which from a Maltese drive or another type of drive in stages is moved. The rotation corresponds to a division, measured from tube end green to tube mandrel.

If the turntable now rotates one pitch further, it becomes the tube mandrel 6 hit the film held by the counter clamp 3, this against the slide Press 4 and 5 and since the feed clamp 2 is open, slide 1 off the roll tighten until the end position of the tube mandrel 6 is reached, i.e. until the turntable has come to a standstill. The film 1 has the diameter of the tube mandrel 6 and runs on one side over the slide 5 to the counter-clamp 3, on the other side over the slide 4 to Yorschubklemme 2 and further to Foil roll. Now move the slides 4 and 5 towards each other and push them two legs of the film 1 further and further together except for a narrow gap. In this gap, a heating wedge 7 is pivoted, which the sides facing it of the film 1 is heated, which is then pressed together by the slide 4 and- 5 are welded. During the welding process and as long as the slide 4 and 5 are pressed, a knife 8 cuts the film 1 at the weld seam away. In the meantime, the feed clamp 2 has come so close to the interface that a predetermined strip of film la protrudes from the closed jaws. This photo strip la is captured by the counter-clamp 3 and so stretched transversely and peeled off from the roll of film, like this for the tube tube plus seam is required. It is advisable that the pressing edges of the slides 4 and 5 are not right-angled, but about 450 angled * so that the weld seam is inclined at this angle to the tube body. By means of a pressure rail lo, the previously through the heat source 9 plasticized seam 11 is pressed onto the tube body and welded to it. The resulting seam 11 'can be seen in FIG.

Another longitudinal seam formation is illustrated by FIGS. 7-12. The transverse tensioning of the film 1 takes place as already mentioned, only pulls the counter-clamp 5 a little more foil, so that this end lb after the longitudinal seam has been closed longer than the weld, i.e. it survives. The slide 15 then has on the beveled pressing edge a protruding edge over the entire length, which the bevelled edge of the slide 12 is covered when eating protruding, longer end lb bent over, as can be seen in FIG. A not The drawn knife has now severed the film 1 at the weld seam.

The angled end is plasticized by the heat source 16 and by the slide 18 in cooperation with the slide 17 with the protruding Seam welded, as can be seen in Figure lo. Pressing the seam 20 on the edge of the tube, after appropriate heating, through the splint l9. Of the The tube mandrel has a groove 21 into which the seam is pressed. The finished one Seam 20 'is shown in FIG. 12.

Turning over the edge of the tube in the case of multi-layer films, such as those used for Welding with two-part shoulder pieces or when injecting, pouring on a prefabricated shoulder core and by compression molding shoulder pieces with -Simultaneous welding and when welding according to the rotation welding process is advantageous. The tube hose 11 provided with the longitudinal seam is located on the tube mandrel 6.

The feeding of the foil is such that the tube body 1 'is slightly over the edge of the mandrel protrudes. The insertion head is placed on the end of the tube mandrel placed, which consists of the part 23 Fig. 15. The one secured against twisting Til 23 has concentric millings for the slide 24. The slide 24 are bevelled towards the middle and carry a bolt 25. This bolt 25 protrudes in inclined guides of part 22. If part 22 twisted, changes the position of the inclined groove and thus the position of the bolts 25, the -die Move slide 24.

The angled side of the slide press when turned accordingly of the part 22 concentrically the edge of the tube body.

In Fig. 14 the shoulder piece 27 is pressed. The die 28 is carried out divided. Fig. 17 shows a cross section of a completed in this way Tube. In Fig. 15, the tube rim is inserted into a shoulder piece, which is a Has groove. The whole thing is then welded.

In fig. 16 are the individual tube mandrels 6 on a step-by-step basis moving table 29 arranged. They mean: I. Pulling out and laying the film across 1, enclosing the mandrel, forming the longitudinal seam and separating the film on the Weld.

II. And III. Creation of the longitudinal seam on the tube body.

IV. Application of the shoulder piece or welding to the edge of the tube.

V. and VI. Cool down (print if necessary).

VII. Removal from the tube mandrel for further processing.

VIII. Lee control.

. 1

Claims (1)

P a t e n t a n s p r ü c h e 1.) Process for making rounds and oval tubes and tube bodies made of foil with an axially directed shoulder piece or locking base, characterized in that one or more sheets of film are wrapped around bar connected to a mandrel to form a tube body and the head side of this tube body is closed with a shoulder piece or closure bottom, the spike for Fixation and completion remain in the tube body until all of them are incurred Work has been carried out. 2.) Process for the production of round and oval tubes - and tube bodies made of film according to claim 1, characterized in that # the film is supplied in tape form and only after, before or during the connection to the tube body at the connection seam is severed. 3.) Process for the production of rectangular and oval tubes and tube bodies made of film according to claims 1 and 2, characterized in that the film strip detected and held transversely to the direction of movement of a moving tube dome and that the mandrel with its front edge the foil tape so far through the gap two slider standing at a certain distance takes with it that when pressed together the slide closes this the foil behind the mandrel. 4.) Process for the production of round and oval tubes and tube bodies made of film according to claims 1 to 3, characterized in that during production a double lap seam, the film is pulled out about a seam depth, so that after the first welding of the film to the tube body one edge the other towering over this little piece. 5.) Process for the production of round and oval tubes and tube bodies made of film according to claims 1 to 4, characterized in that the slide have inclined and mutually parallel pressing edges to form the longitudinal seam. 6.) Process for the production of round and oval tubes and tube bodies' made of film according to claims 1 to 5, characterized in that the slide to form the longitudinal seam have inclined and parallel pressing edges and a slide in addition, a protruding edge sits at that when the Slider covers the beveled contact edge. 7.) Process for the production of round and oval tubes and tube bodies made of foil according to claims 1 to 6, characterized in that for fastening the longitudinal seam any welding process can be used. 8.) Process for the production of round and oval tubes - and tube bodies made of film according to claims 1 to Q, characterized in that when used of the induction welding process, the metal wire for the longitudinal and / or transverse seams is already supplied with the foil. 9.) Process for the production of round and oval tubes - and tube bodies made of film according to claims 1 to 8, characterized in that the slide (4 and 5 resp. - 12 and 13) are arranged so that the welding in a certain and a predetermined distance from the mandrel. ra,) method of making rounds and oval tubes and tube bodies made of film according to claims 1 to 9, thereby characterized in that the tube mandrels are designed for the most extreme length, and that the feed of the film to the mandrel takes place in such a position that the edge of the film protrudes slightly beyond the thorn. 11.) Process for the production of round and oval tubes and tube bodies made of film according to claims 1 to 10, characterized in that the mandrel for Recording the thickness of the seam has a groove. 12.) Process for the production of round and oval tubes and tube bodies made of film according to claims 1 to 1i, characterized in that the attachment of the shoulder pieces to close the tube body head end by high-frequency, Heat impulse, heat action, rotation and induction welding processes by welding and injection molding, molding around a shoulder core, or compression molding one plasticized plastic part or by prefabricated one-part or multi-part Shoulder pieces and subsequent welding to the edge of the tube or by any Combination of the listed procedures u0 a. is carried out. 13.) Process for the production of round and oval tubes and tube bodies made of foil according to claims 1 to 12, characterized in that for attachment of the shoulder piece at the end of the tube body by ultrasonic welding of the tube mandrel is designed as a sonotrode. 14.) Process for the production of round and oval tubes and tube bodies made of foil according to claims 1 to 13, characterized in that the mandrels (6) are arranged on a conveyor belt or a turntable 15.) Method of production of round and oval tubes and tube bodies made of foil according to claims 1 to 14, characterized in that tolerances in printed foils by a differential gear compensated and the difference is placed in the longitudinal seam. 16.) Process for the production of round and oval tubes and tube bodies made of film according to claims 1 to 15, characterized, that in the case of unprinted film, the tube body is printed at a point in time where the tube body is still fixed by the mandrel. 17.) Process for the production of round and oval tubes and tube bodies made of foil according to claims 1 to 16, characterized in that when it is peeled off of the tubes from the mandrel these are counted and / or stored ready for dispatch. 18.) Process for the production of round and oval tubes and tube bodies made of film according to claims 1 to 17, characterized in that in the case of tubes, which the closure seam at the foot of the tube body is filled through the shoulder piece after removing the tube from the mandrel takes place in such a way that the trigger grippers the tubes the closing device in a predetermined position. 19.) Process for the production of round and oval tubes - @ and tube bodies made of film according to claims 1 to 18, characterized in that during production of the tube body and the stretched film around chen fixed or two-way The fixed mandrel is closed in such a way that the film has the movement to enclose it of the tube mandrel.