DE1904242A1 - Device for the production of pipes - Google Patents

Description

For the production of pipes from asbestos cement , machines working with an upper and a lower felt, which work according to the wide winding process, have already been known. Hiebei a nonwoven fabric is on a rotating screen drum corresponds -whose width of the produced tube length and is immersed in the pulp formed by the water passing through the sieve drum and the fiber pulp on the screen surface remains behind, while the water from the interior of the screen drum is derived, The couch roll is pressed in in the upper area of the sieve drum

909 836/0270

«. "2375/2.

endless felt belt against the sieve drum, where the fleece, is transferred to the felt belt. This felt hand is passed over a brush roller as a lower felt and then on Course then still over clamping and washing devices. There are also drainage facilities in the course of the lower felt installed, which drain the felt and the fleece on top.

The hand strap is placed on the top of the breast roll. It is generally a steel or also Cast iron cylinder with a length that is slightly greater than that of the pipe to be produced and its surface either is smooth, knurled or otherwise roughened in a suitable manner. By the pressure of the hand rice against the breast roller the fleece is drained and wound onto the mandrel. The wrapping process is maintained as long as until the desired pipe wall thickness is reached. Then the process is briefly interrupted, the wound mandrel taken out and inserted a new mandrel, whereupon the process can begin again.

During the winding process, press rollers are pressed against the mandrel from above, over which as well a felt, the so-called top felt, runs. These press rolls have the purpose of further solidifying the fleece and by means of of the felt to continue to draw water from the raw material. This top felt also runs over tensioning devices, washing devices and drainage devices.

This method is called the Kazza method according to the inventor known. The Hachteil of this method is that by the Unterfila, which is with deflection rollers from the couch roll must be guided to the breast roll, a lot of tree is needed for the accessibility of the Machine would mainly also be needed for changing the mandrels. The two felts make the operation more expensive, there these felt sheets especially when processing asbestos cement are subject to heavy wear. For drainage dee Fabric fleece in the lower felt high vacuum suction cups are used,

909836/0270
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dl «the I'll« subject to a lot of wear and tear.

Also known was solion a device for the production of clay asbestos cement panels aue a thin liquid, Asbestos-cement slurry, using a sieve cylinder, pick up an asbestos * «» film from the slurry and transfer it to a pil ε cloth, which, after the asbestos-cement film has partially dehydrated, transfers it to a format roller. With this ·? linrichtung should approximately double the performance of the well-known "Jteei ^ slebe-cylinder plate machine achieved thereby two endless mushroom cloths are arranged on the format roller, * »l» stands separately in different places the Formatwallt frozen and over separate screen cylindergfttp- ; pen are guided. When the device is installed, the supply takes place . dee fleece · »τοη« ben «around Äandrel. The structure of the machine ,, is complicated and the lukewarm couch roll and

! Jiandrei built in, - ': .- ■;

In secaant it was auoh «ohon. in the case of an »aiohine, di · Handreis, who with! the be acted upon by UttterTtl * »ufeitüttttn fleece, t automatieoh mittils etnee chain drives" with endless, environmentally \ chain is running 41 * la ilrbeit set move RECOVERY do. Ow

'This Maeohltie let costly. The Laum zwisohen breast and ι fautschwal "t ** * eiteetgeliend veri through the chain drive - lmut ^r. "- -, ^; _: .. ■"■; ■■■■ "'■ % ■■ * _ » The invention now relates to a device for the production of pipes based on a material, for example asbestos and a hydraulic binder, for example tight _t using a single web that carries the pulp, which is endlessly guided over at least one couch roll, which sucks the pulp from a feed device, for example a Siebtroiamel, and at least one Preüwalee, which runs the felt with the felt on it With a device of this type, which also works with a rough f ± \ z , it is known to feed the felt in such a way that, starting from the couch roll, it first acts as an upper felt and then works as Unteri'ilz, ie after the expiry of τοη

909836/0270

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BATH ORIGINAL

The press rolls located in the area of the breast roll is the

i I. 'ϊ,

F ilk wickedly a deflection roller and then back to the bruai roller ledL ttaoia whose passing the, felt back to the GrS, utschwal2 | e is returned. The device has ^

the disadvantage that the mandrel can only be accessed by a Sadte ^ ii

IiGh! isii, nieh
were

little mandrel ift work * -

However, from both sides ι like te

To be able to simplify the loading of the pipe with mandrels and thereby to allow plat ^; to save "Pie β can be fought, however, if you have sriitidting the felt web after the end of the press"! odW the ii # ßwalzen, without stepping with the Bruetwalze in lead »a # isur 4aut» ehwalze lizw. the & ^! authwalzen, led back iiat «! pDur | h the inventive design of a mockery-üii ·. iet «ow the Platzvoji? d (em be free in ^ .distribution of work, ale'also ^ that place, the JÄioh ^ j position; located mandrel is !. jM * du4? ehf iet gönü-. geni! place (for the accommodation of the 2JcU ^ r « .. laxlehtung6ti for the 'mandrel ge β chaff ^s: .ί 1 ■ "- ..

- -; "Uok tciion" ine became known; Maachine _p the only with! an underfelt works. This · Mftschiae T «r» Ewar 'the use of eweier iiiLiset / Tt ^ bteeert.abi ^' Sceiiatewegs the j accessibility of the Maechkne, '| ! i, ■:!

pie invention is referred to below on 'hand | from in the Drawing ^ illustrated execution examples explained in more detail.

Se. «Specially ■. '. \ :;

fig., 1 echeeatiech an ingeniously designed Yorrich / tung to divide you Hoaran,

Jig. 2 a detail from fig / 1 in "a * opposite flg. 1 gröfieren Haßatab, ■" ■ ■ I i. \

■ Pig. 3 a further detail from fig »1 * t1» es.fallß ^ n opposite Pig. 1 enlarged shark * tabj '

Pig. 3a shows a section along the line HIa-IIIa in fig. 3,; /

yig. 4 a wide detail from Fig. 1, /

5 shows a section along the line V-V in Pig. 4,

6 shows a modified embodiment of the in FIGS

• ι

fig. 4 and 5 shown details in an axial section,

! 909036/0270

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Pig

ORIGINAL INSPECTED

S ¹ Ig. 7 shows a section along the line VII-VII in FIG. 6, FIG. 8 shows a longitudinal section through a further Aus

drove

ungsform of the in Figs. 4 and, Fig. 5 shown Details and '

i / Fig. 9 shows a section along the line IX-IX ¹ in

^ j

8th.

In the drawing is with

1 a screen cylinder; t> e-

draws, which is rotatably mounted in a trough 100L 4er contains the pulp. From the sieve cylinder 1 is formed by means of a suction roller [and in FIGS. 3'Ud 3a ' More detailed depicted couch roll 3-9 dewatered Fabric removed in the form of a άΰηηβμ fleece and a ^ fi a Transfer felt web 2. This felt web 2 runs in de each machine as an upper felt with the fleece over a guide roller 10,

e | ne

Regujlierwälze 11, which fin by means of hydraulic units 101 Direction of arrow A is displaceable, and further on; Lead

rollers 12 and H to press rollers 16,

where the tube forming after

the wide winding process already explained). The regulating roller 11 can be operated by means of two hydraulic units | 1O1 be brought into a position in which the axis 102 of the regulating roller with the direction of movement of the felt web forms an angle different from 90 °. ;

After the fleece has been dispensed in the area of the press rollers 16, ah a mandrel 16 ', the felt web 2 runs, without having come into contact with the breast roller 62, over guide rollers 18, 20, 21 and 22 and over an a ^ sgle ^ chs- g roller 23 j further guide rollers 24 and 25 via a drive roller 26, which can be driven by means of a motor (not shown) and your transmission, and a tension roller 27 again! ! back to couch roll 3-9. The. Guide roller 21 is arranged in a trough 21 'in which the felt web 2 is washed. A plurality of high-pressure spraying tubes 103 are provided for felting purposes, the jets 104 of which are directed against the felt web 2; ge

are directed. More are in the trough 21 'or; several Felt bat 21 ″ arranged, which is shown by means of a nichjb Drive can be put into circulation. Between the tension roller 27 and the couch roller 3-9 is a

909836/0270

ORlQJNAL INSPECTED

- ς _

19 (34242

so-called washing sucker 2j8 arranged L

The Druolcwmeenunter- assigned to the press rollers 16

part 34 is by means of stationary Klhrungal «! et · η 39: laterally, the machine arranged _f; Locally the 4 (0, guided and centered piston feangeii 4 $ »connected with Ißroek cylinders 41! which are fastened in the | lJruckwagtnob * r1leil 42. With the help of the pressure cylinder 41 upwards, the pressure cylinder 41 is used to move the pipe upwards, and it is fixed in position according to the diameter of the mandrels 15, which are used for the production of a series of identical pipes Stellzylinäei * 44 vorgeöehen, which are fastened in brackets 45 and attached to * Ser iKolbenetangen 46 of the print carriage upper part 42 befes "| ig1; iß-fc *; The of the print carriage upper part 42 takes place when empty

Mandrel 16 'lowered

> 1 y- -

, lower part

34 » U» 33ichers5U-

steep, so that the printing carriages are evenly moved up and down, a parallel guide arrangement is provided, which consists of a connecting shaft ), gear wheels 49,

ψ)

dead

48 and racks 47 are dead.

The compensating roller 23 moves towards the tension of the mushroom web 2 when the position of the printing carriage usually changes, according to FIG. 2 the output roller 23 is via a two-armed lever; the pressure carriage lower part 34 coupled. The lever 30 is never pivotably mounted in a stationary bearing 29 arranged approximately in its center and carries at each end a lever 31-33 baw, 3 ^ -37, which is adjustable in its length, which is attached to the compensating roller 233 between which are hinged to the print carriage inner part | 54. The lever 31-33 is ^ iebei from dret parts, namely a link member 31 which is pivotally connected to the lever 30, a bearing holder 35 which is pivotally connected to deni carriage base 34 ± a%, and a ©. Adjusting nut 32, which connects the joint part 31 to the bearing holder 33. Similarly, lever 35-37 is also

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ORlGlNALl INSPECTED

educated. The lever again consists of a joint part 35 mounted at the end of the lever, an i * iftrhalter 37 for the outer shaft 25 and an adjusting nut, νeiehi den $ tl "ökt" li 55; »It! the storage for 57 \ ▼ # rbinds. The bearing holder 37 for the equalizing roller 23 by means of a sliding block 36 in; a fixed overall \

Di * Bpannwalie 27 (? Ig. 1), can be made from the un-

unijerbro * hen * n; Iiini · '* shown position against the position shown with unbroken lines around your path β if you ^ # il; Uiit ^! di | »nt kum f * et * n adjust the SJiIa-. voltage (ΐ! ϊΐ dependence tob of the respectively available Bteheujden # | il $ q.UÄ3ii: Effc) and atm pulling the mushroom path 2 into the machine.i Ί;

In: den? Ig «? 3 va0-3a ; is designed as a suction roll tJautnöhwalzej 3-9 Ä * t (r shown in detail;! The ■ Manx el Pl lze iet one "of Gaiitechwalit iet hiebei durohlö chert in i inside the Gaut8chi ^(."; "I, a üteil * arranged 'i of the roll circumference ■ »mtreckenäe Saiugkammer 3', j whose Seitenräader AITT * le -Dibhtleieten 7 against the inner-i ^I>] extensive d" r roller abgtdiöliet pInd, the j Stm inside Gautsch ~ | wal;! ae is a, A grit pipe 9 extending in two directions from the roller is arranged » äätt JBur cleaning of the bores, \ töfij, 107 in the jacket surface! of the couch roller djL ^ nt. The Bolar 9 can; continuously or also: intermittently |: | ftnd over from the Achsetubael 108] drilled lineillOg! with Tera carried out

the · Saugkaaaa * ?? 5 · ¹ · and the Spritjzrokr! 9, will

d. * dieSagkaaa *? 5 a pj

- % a. 4ie i & schift «built in," d ^ ß the S ^ ritz ^ ear S in:: feil ier Crau1; schwalz *; ilegt | over which the jfelt web 2 runs .. Vm. £ u jV # rbiad * rn, daö water jets ,, which emerge from the Jöautsclwalse through bores 106, 107,

giae In "training the filibahn 2 cause * are, like Pigv, S" igt, ¥ aseerfangci-eehe 13 * TorgeäSien. In the interior of the Gau-tsch- • AiU.se water fences 13 are provided, the outer swamp:

In welciie.a that in the interior of the orphan -Terblieaus'dem Spray pipe 9 leaked water sasnaelt. the

909838/0270

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INSPECTED

The suction chamber 3 is drained through a bore 110 made in the second stub axle 3 of the suction steam roller. The jacket of the suction steam roller is supported against the axle stubs 108 and 3 via tapered roller bearings 111 and 112. ROOM ₁ ! ^1, in which the tapered roller bearings 111, 112 are located, is closed off from the outside by means of bearing caps 6.

The main advantages of the suction nudger roll are the suction and G-nudging effect of the screen cylinder, simultaneous dewatering of the fabric and the strengthening of the web due to the additional suction effect, which means that -r ¹ ? ¹ production-disruptive dropping of the fleece with the UmI: ra around the Saiiggaiitschwalze avoided especially with large fleece thicknesses v,: Lrd.

The pressure exerted by the I; t / Ißwalsen 16 on the mandrel 16 or the fleece located thereon is transmitted to the breast roller 62 and generates a high line pressure there. The breast roll 62 is therefore covered with a cover 61, for example made of plastic, rubber or the like. provided (I ¹ Ig. 4 and 5). The pressed water flows off over the breast roller 62. A scraper 68 resting on the circumference of the breast roller 62 is provided for cleaning the breast roller 62 from adhering parts of the fleece material and for wiping off the water. A spray tube 63 can be arranged in front of the scraper in the direction of movement of the breast roller 62, the jets of which impinge on the circumference of the breast roller 62 and thus additionally contribute to cleaning the breast roller. A tubular plastic screen can also be used as a cover for the breast roller 62, which screen can optionally perform a sliding movement with respect to the breast roller in the circumferential direction. The plastic sieve has cavities which are useful for discharging the squeezed out water, the water being blown out or being discharged via the roller itself, if this, as the Pig. 6-9 show, is designed as a screen roller. In the embodiment shown in FIGS. 8 and 9, the interior of the screen roller 62 can be subjected to negative pressure.

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In a device designed according to the invention, a specially designed feed device for the mandrels are used for the breast roll. This device is used to insert the empty mandrel, the winding of the fleece, the calendering and the pulling out of the mandrel in four stations, whereby after completion of the winding process three mandrels around one station each are conveyed further and the! transport device is emptied in rhythm after the mandrel has been pulled out by one station at a time going back.

In Fig. 1, an example of such a transport device is shown.

A, B, 0 and D denote the standby position, the winding position, the calender and the pull-out position of the mandrels on the pedestal bearings 53 mounted on the lower part of the mounted wheels 112 can be moved along rails 60. The upper part of the car 56 can be raised and lowered relative to the lower part of the car by means of lifting units which are each formed by a cylinder 55 fastened to the lower part of the car and a piston which carries the upper part of the car. The upper part of the car is guided in longitudinal guides 54, which are designed as round guides. An attachment flanges 59 which are fixed to the front side of the carriage the lower part 51 engages a piston rod whose axis is parallel to the rails 60, the iät performed back and her'böwe'gbar in a cylinder 57 ± üfctd; By means of the piston rod 58, the trolley can be moved along the rails 60 when the cylinder 57, not shown, is acted upon with a medium under oil and at the same time is aired.

After the completion of a Wicke * ± vd * glfc | # § §iM8 zeitteiit-tube, the T * raiis ^ Grtwäg £ tt8i§r't§il§ of the lifting cylinder 55 are raised, - wödiirch ¹ äSi Sieli ifts in a business position A itöndrel tÖÄ ä §Fi Bit ääs just iü tfiekelpdsitiöii fi

^ßAD

zementrolir from the breast roll, and that, in calendering- ~ Position G asbestos cement pipe is lifted off the calender rolls. The trolleys are now using the piston rod 58 brought into its front end position. Now the upper parts of the carriage 56 are lowered, thereby the mandrel on the breast roll 62, the just wound asbestos-cement pipe on the calender rolls 70 and the previously calendered asbestos-cement pipe Depending on the system, either on the pull-out channel when using a short circuit, with the mandrel immediately is pulled after the winding process or deposited on the roll-off track 69, the mandrel only after a corresponding Pre-setting time is pulled out. The trolleys are then moved to their rear end position by means of the piston rod 58, i.e. returned to their original position.

ORIGINAL I

Claims (11)

Patent claims: 1. Apparatus for making pipes from a fibrous material such as asbestos and a hydraulic one, for example Binder-containing mixture, using a single felt web carrying the pulp, the endlessly over at least one couch roll, which the pulp j is extracted from a feed device, for example a sieve drum, and at least one press roller is guided, which presses the felt with the fleece on it from above onto the mandrel supported by a breast roller, characterized in that the felt web (2) after expiry of the j press roll (16) or press rolls, is without coming into contact with the breast roll \ ™ (62), returned to the couch roll (3-9) or the couch rolls. 2. Apparatus according to claim 1, characterized ^! shows that the guide or deflection rollers arranged between the piss roll and the couch roll for the felt web, in particular for that of the couch roll (3-9) of '. the run of the felt web (2) running towards the press roll (16) is arranged above a horizontal plane passing through the axis of the mandrel (16 ·) located in the working position between the press and breast rolls. 3 · Device according to claim 1 or 2 with a in the event of a change in the position of the printing rollers stored in a printing carriage, the felt tension is kept constant Compensating roller, which is coupled to the print carriage via levers is, characterized in that on the printing carriage and / or on the compensating roller (23) a length adjustable Lever (31-33 or 35-37) is articulated, with the bath levers via a, in a stationary bearing (23) pivotable compensation lever (30) are articulated. 4. Device according to one of claims 1 to 3, characterized in that for biasing the felt web 90983 6/0270 - 11 - ORl INSPECT®, a hydraulically or pneumatically displaceable tension roller (27) is provided. 5 «Device according to one of claims 1 to 4» characterized in that the couch roll is designed as ale suction couch roll (3-9) and a stationary hollow shaft serving to remove air and water! (3) and has an outer screen jacket rotatably mounted thereon, a suction chamber (3 ') covering part (tt) of the inner circumference of the roller, which can be set under negative pressure, is provided (Pig. 3). 6. Apparatus according to claim 5 »characterized in that the Sauggautechwalze on that feil» on the none Fungus runs, with a continuous or intermittent 'Switchable spray pipe for cleaning 4tβ cylinder is provided, which can be attached outside or inside lit _# wobti for draining the water inside and or «-or outside Waeserfang- ■ Sheets (13, 13 ') can be arranged (fig. 1). 7. Apparatus according to claim 1, characterized in that that the breast roll (62) has a bow (61), e.g. made of plastic, rubber or the like «, provided tit (fig« 4 and 5). 8. Device naoh. Claim 1 dft *? "*?« Thereby characterized in that the B-ezug the Bruatwalzt (62) as ßhlauchiforme Flastsieb is formed, which may be is vtreohwenkbar relative to the body of the breast roll. 9. Apparatus according to claim 1, characterized in that the breast roll is formed as a screen roll (Fig. 6.7). 10. Apparatus according to claim 9, characterized in that the interior of the breast roll designed as a screen roll can be placed at a slight negative pressure. 11. The device according to claim 1 with a feed device for the mandrels to the breast roll, characterized in that the feed device in particular as Carriage is formed, which goes through four stations, namely a station in which the mandrels are placed on the carriage become, a station in which the mandrel with the pulp is handled, a station in which the man- 909836/0270 three "existing fabric" is calendered pulp and one station, in which the mandrel is pulled out of the tubular wound pulp, with three mandrels after completion of the Niokel process advanced by one station each and the (transport device in 3) act goes back empty by one station after pulling out the mandrel. Patent attorney Dipl.-Ing. Horst Rone Dipl.-Ing. Peter Kr.J 909836/0270 - 13 -