DE1915768C3 - A method and apparatus for continuously manufacturing a tubular article from a sheet of foamed thermoplastic resin - Google Patents

Description

Violating longitudinal si'.jnHächen with each other is possible. it has a high coefficient of friction;

\ erbunden, thereby marked io ziciuc-n-, so that a deduction of vnp. a fornidu ·.

shows that the long sides are allowed to move, and that it is allowed to move.

are warmed that then along the connection only a "" heating of the contact surfaces, since <■■■■

exercise line a radial pressure on the tubular full heating the cell i.sirtsKtur des _

exercised moderately curved path and this foamed material / t-r disrupts. Tubular Gegu,

is flattened and that this pressure after 15 stands of foamed resin are therefore nn. ;

the merging of the side surface noc ;; Such a well-known method thereby hcrgt-sieUi:! α

long is maintained until the side surfaces the resin material; directly in the desired form: -,

have cooled down. is foamed. > .i that the desired tube ·. ¹ '

2. Device for carrying out the procedural object is obtained directly. Tuesday rens according to claim 1 with a form in rieh- 20 ses process has considerable economic benefits device to merge the longitudinal edges of the parts, since u for each diameter and length. The web and a heater for heating a tubular object have their own shape these longitudinal margins, characterized by a is required and since the process is only charg ■ .. ··· the heating device (18) is subordinate to pressure and is not carried out continuously: device consisting of two horizontal and 35 can, d. that is, the form -u two vertically arranged endless belts warmed up and cooled down again a lot of time ;; (2.6, 13), which are composed of a pressure.

A method is also known in which d-.:i

cut the roof compressed sheet (1) tubular object from a sheet of

is equivalent to. 30 foamed resin is made by the Bahi

3. Apparatus according to claim 2, characterized in that it is bent around a mandrel until its ·. indicates that longitudinal side surfaces touch between the forming device. Since the train from ge (17) and the four endless edges (2,6, 13) foamed resin, as already mentioned, a high egg one Pressure roller (19) provided Ut. sticity, it has a tendency to move away from the

4. Device according to claim 2, thereby lifting off the mandrel and its original shape indicates that the printing device is to be adopted so that the abutting Ran Roller (20) that gape on their circumference with a groove of the track when they are from the dei is provided, and a guided in the groove end pressure roller come free, which they against the shapeless There is pressure band (21), the mandrel pressing in the groove. In this process, therefore, a a printing line is formed, the cross-section of which is 40 quick-setting adhesive for connecting the toeindem Cross-section of the flattened butted edges are used, and that Corresponds to web (1). Peeling off the tubular article from the

The mandrel can only be made so slowly that the other

butting edges a sufficient space

■ »5 pressed by the pressure roller against the mandrel

The invention relates to a method to be continuous in order to ensure hardening of the connection point Manufacture of a tubular counterstay. The particularly advantageous thermal Verdes a sheet of foamed thermoplastic welding of the tape edges is therefore modest with these Resin, in which the web is continuous in order not to apply known processes, as there is a too their longitudinal axis is bent and their 50 requires a long cooling time

abutting longitudinal side surfaces with one another The object of the invention is to

be connected, and a device for continuous process for the production of Rötirenförführung this procedure. like objects made of foamed thermoplastic

Recently, foamed resin is found on the shem resin to be formed in such a way that the most different from each other Areas of use, e.g. B. as 55 ßenden edges of the web of foamed resin Thermal insulation, packaging material and interior can be thermally welded together, lining of vehicles. Foamed tubes without reducing the production speed tem K-irz are used for thermal insulation of pipes.

and al packaging for rod-shaped goods. According to the invention, this is done in a method

applies, in particular for those whose surface 60 of the type described above is achieved by can be easily damaged. that the long side surfaces of the web are heated

The manufacture of tubular objects that then curve along the connecting line Made of foamed thermoplastic resin, dialer provides pressure on the tubular curved sheet numerous difficulties. There are indeed numerous exercised and this is flattened and Process for the production of tubular ge 05 that this pressure after the merging of the Seigensländen made of non-foamed thermoplastic surface is maintained until the Shem resin known, in which webs are cooled from this side surfaces. Resin wound on a mandrel and the

3 4

fen :; Ownership: CMC Forrneinrichlung / um Ziisamnn'n- F ι g. J, 2 and 3 a Ins .If reproduced in ik-ii

(clocks on the outer edge of the cock and purely lleizein- l ^: iy. I ur.d 2, nut I becomes a sheet of foamed

liehliing / um heating this llingsrimder and is thermoplastic liar / hc / eichnct. Through a fntiu-

frhndunusfjemäU characterized by one of the llciy devices 17, dice Hahn is gradually / u

i'inrichüing near-orderly printing facility. best s dun in Figs. Ta, 3 h, 3 c and λ ei dan.csU-iii;: ri

hem! of two horizontal and two vertical: iu- cross-sectional forms veriormi, with their long sides-

feordiieteii endless ribbons set together .; swearing in and 1 / ι gone fulN with each other in bi-

Fuie form pressure section, the cross-section of which can come into contact. The longitudinal longitudinal surfaces 1 n

Uuersehnitt tier flattened tap and 1 /) are heated and heated by emc heating

tintspriciu. Advantageously, the shape ia mng 18 is melted, after which the u.

device and the four endless hand in cm · tubular form transferred web by a pressure roller

Pressure roller provided. 19 - as shown in Fig. 3e - pressed flat

The printing device is expediently made so that the longitudinal sides are connected to one another

a role, which are provided with a groove on their circumference.

See is, and from one guided in the groove endless- 15 while the so formed tubes pass through four

sen printing tape, with a printing section in the groove, tapes above, around, right and left still flat

is formed, the cross-section of which is kept compressed to the cross-section, it cools down

corresponds to the flat compressed web. the interconnected longitudinal side surfaces.

Hie invention offers compared to the known !! and when there is no more pressure, she takes

\ c: It has the advantage that when connecting the an ao again the in FIG. 3 f shown tubular shape.

through their abutting edges of the web. The former 17 is designed so that the

tches welding a particularly homogeneous and Quti cut of the web - ν ie> n den F i g. 3 a to 3d

durable Nah! is obtained. The according to the invention presented - progressively - is changed while

The procedure does not use a form, so that it goes through the form after leaving

Frobk-m the high friction of the foamed resin 25 of the molding device 17 takes the web a tube

tiiäier ils when pulling from a mandrel eliminates renform, whereby - as in Fig. 3d daigesteüt ---

Is, whereby a high production speed the longitudinally parallel side surfaces 1 α and

er, ei: lit will i ο face each other in such a way that a V-shaped

The method and apparatus according to which the gap is formed. To the forming device 17

Invention is particularly economical; because pipes 30 closes the heating device 18, e.g. an electric

made of foamed resin have a very large specific soldering iron, torch or hot air nozzle,

See volume, which is why the transport costs are high as well as the pressure roller 19. The pressure roller 19 has

Child. However, since the device according to the invention has a predetermined width and is in

is very cheap, factories that make such tubular a predetermined distance with two flanges

need shaped objects in large quantities, 35 provided. The pressure roller 19 is still so different

This device can be easily acquired or simply arranged (for example higher than the form

build and take over the production itself, clause 17), that the longitudinal side surfaces of the web in

by saving transport costs that are brought into close contact with each other. When

arise when purchasing from the manufacturer. accordingly, the web reaches the pressure roller 19 is

Materials that are subjected to a certain voltage in the Vtr-40 according to the invention and, as in

! driving can be used, for example, polyols F i g. 3 e shown, flattened. In this joint

If in a quantity-pressed state copolymerized with other components, the long side surfaces

Olefins, crosslinked polyolefins, vinyl polymers and chen la and 1b of the web, which were previously through the heating

Natural or facility »8 mixed with these polymers, firmly together

synthetic rubber. 45 connected.

In the following, the invention is illustrated by means of It is important that the welded connection seam

Embodiments with reference to which does not come into contact with the pressure roller 19.

Drawing explained in more detail. The longitudinal side surfaces 1 α and 1 b of the web can

Fig. 1 shows a plan view of a device not _NEN only by the heater 18 with each other

for the continuous production of tubular 50 which are connected, but also by Verwep, -

Objects made of foamed thermoplastic manure of molten resin of the same kind

Resin according to one embodiment of the invention; like that of the train.

Fig. 2 is a side view of the device according to a printing device is composed of four endless

Fig. 1; bands, namely 2, 6, 6 and 13 together and

F i g. 3 a to 3f are successive transverse 55 transports the tube-shaped object forward.

Cross-sectional views of the web as it turned to a downward direction, being so held flat

Tube is deformed ^ and that is in the cutting lines, as it is flattened by the pressure roller 19

3a to 3 / of FIG. 1 and 2; while its fused compound

F i g. 4 is an enlarged side view of a split seam ¹ cools.

les of the device according to a / broader embodiment. 60 On the underside of this printing device is a

shape; lower circumferential horizontal band 2 arranged,

Fig. 5 is a section along the line V-V which is guided over three pulleys 3, 4 and 5.

Fig. 4; Furthermore, there are two vertically lying endless belts

F i g. 6 is a section along the line VI-VI of that of FIG. 6 arranged on both sides, each over

Fig. 4; 65 three large pulleys 7, 8 and 9 and two small

Fig. 7 is a section along the line VII-VH of the inner guide rollers 10 and II. Between

Fig. 4. see the smaller guide rollers 10 and II (from

The first embodiment of the invention is described below in only one pair

uirfl) extends si < h a l-'iihiungsplaltc 12. with it the pressure setting <11c- entire slicikc / wipe the ring rolls K1 and II have a uniform shape Hreite observes. Furthermore, there is an upper, hori / onlal lying dog 1.1 intended, cias ül> er Um lcnkiollen 14, 15 and ΙΛ iimlitnli. These four die Pressure device forming mouths 2, ft, 6 and 1.1 form the smaller hill over the strikes / wisrheii niiigsrolleri 10 and M a rectangular (Jiicrschnills loiiii If accordingly the pipes mis uesi häumlem Resin is successfully introduced into this pressure unit She always tells one of the ll-indians 2, Λ, ft and 1.1 exercised IJriitk and retains the above, fl.u i.gc It has a third shape, the circumferential line of which is approximately rectangular. The (Juerschnillsgiölle of the Diuckeiri Exercise can be done by changing the location of these four Can be varied freely by hand.

It is therefore easily possible with one and the same system, tubular (icgcnstäiide under si hiedigercr (iröftc made of foamed mar / her / iisiel Ie n.

The drink range formed by the unrestricted inside is usually e'wa (1. ¹ S to K in long. The running speed in this deck device is about 1 to ID rn in

'iegeniiber Her rrslen Ausfiihi ungsloiin, IXH Iler the Diuckeinrii hluiig; hjs four Haridern is formed which I i g.4 zcigin a / · because Ausführungsiümi is provided in which a KdIk- 20-7, in the order long ausgesoatt a groove is. as well as an endless hand 21 which is locked in the groove - all necessary - guide rollers 22, 21 and 24 can be provided. The groove in the package 21) has a ring which is essentially equal to the width of the Ouer silinilislorm of the Flachgediiiikteii Hahn naili I ig Ie. In order to be able to manufacture tubes with different diameters and wall thicknesses, it should preferably be possible to adjust the groove in roller 2 (1 by means of a suitable line direction. The l.silingsseileiidachen the Ik'i / device 18 i-rwäimt, / wipe the surface of the groove in the roller 20 and the endless dim kbiin'J 21 while choosing the warmed up

The tap lets the tap cool down with the rope, so that it can vviih lend ihies Diuchhuils dutch the Dnickcinrichliin, (it | iniieinaiider connected tilcilicn, the heated tap keeps the pressed Ι · 'οπη at on (iriiud the lazliziliit des schiiiimteii material by itself, so that <one obtains a hollow with circular (Jucrschnilt. Di lig. .S, f) and 7 are (Juerschriittsansichtcn along lines VV, Vl Vl and VII-VII of ed. 4, which you have different lornies / which the Hahn vvähieni ihies passage through the printing device accepts. The letters of I ¹ Ig .. ^ to 7 are the same as () ie in I. · Ig 4.

In the first embodiment, a printing roller IV is used, but a device is without such a printing roller, in which a heating device IH is provided in connection with the ormcinrichtuiij 17 / '(see. On which the printing device is foiled for the production of tubes made of foamed thermoplastic resin completely expanding The present embodiment shows such a lull in which no pressure roller 19 is used ι.hen against each other, and they cilcichtci the heliieb when they ^{are wildly arranged between the loinieinrichliini 17 Ulli. 1} dei DruiLemiiclilung as shown in the crsiei Ausfiihiuiigsidiin

The crfiiuliiiigsgcniiil.t illustrated tubes can on a number of application areas beneficial use linden you have a smooth and equal moderate appearance and are wiirmisn excellent experiments with regard to the main features of the connected longitudinal flow One of the rolls produced after the invention gen. that the connected rope surface area do not separate from each other if one tries and ι Krallin alarm the connected girls from one another to separate. The other 'parts of the tube reuter or break under Hikliing a fresh Hiucli I laugh first, which proves that the connection is the Long side surfaces is far stronger than the strength of the foamed heating material itself.

For this I HIaII 7.ei (hnunccn

Claims (1)

I 915 768 O dersuiiknnen edges of these faucets thermally vl-γ be welded, but these processes are at iiaii % foamed H ;; not usable. D :: i. Namely, a method of continuously producing a solid resin is easily deformable and uii a.;. ·, tubular-shaped object ai!>. a 5th - elastic, so it shouldn't -> without a tour Haün made of foamed thermoplastic resin, a mandrel can be held, it possesses a, K-i Jem the Hahn konirnuierüeh to their longitudinal very low thermal conductivity, so that only one axis is bent together and their superficial abutment for a weld