US1618026A

US1618026A - Tubing machine

Info

Publication number: US1618026A
Application number: US751441A
Authority: US
Inventors: Royle Vernon
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-11-21
Filing date: 1924-11-21
Publication date: 1927-02-15
Anticipated expiration: 1944-02-15

Description

Feb. 15 192?, v. ROYLE I TUBING MACHINE Filed Nov. 21, 1924 INVENTOR ,1; ATTORNEYS r a e F b- 1. .v 9

- 'VE RNON BOYLE, or rn'rnnsomnnw JERSEYQ TUBING MACHINE.

' Application filcddil'ovember 21,.1924. SeriaI No. 751,441

. This invention relates to improvements in tubing machines and, more particularly, to.

the construction of the discharge portion. of

bridge and core structure that inclu es-two series of apertures concentrically arranged, one withinthe other. i I

' Another object consists in providing a core bridge structure that includes apertures through which the material may pass, in addition to the apertures immediately surrounding the core.

Another object consists in providing a discharge structure for such a machine that includes means for compressing the material after it has passed the core'bridge and then permitting the same to expand before it reaches the die.

Another object of the invention consists in providing such a structure which includes a special form of die and means for adjusting the same.

Another Qobject consists'in providing certain improvements in the form, construction and arrangement of the'several parts whereby theabove named and other objects may effectively be attained.

A practical embodiment of the invention 1s represented in the accompanying drawings, in which Fig. l reprcsents a detail front view of the discharge portion of a; tubing machine'ernbodying my invention.

Fig. 2 represents a section taken in the plane of the line IIII of Fig. 1, looking in the direction of the arrows.

Fig. 3 represents a face view of a core bridge and core, partly-broken away.

The front face .of the tubing machine head is denoted bv 1, and it has the usual channels 2 for permitting the circulation of a temperature controlling medium, as is well understood in the art.

The said front piece has a bore 3 in which the screw or plodder (not shown) operates in the usual manner. i J

The said bore is reduced in diameter, as indicated at 4, and it is then enlarged so as to provide a shoulder 5 against which the core bridge is seated, as clearly shown in Fig. 2.

The said core bridge includes an outer member 6 that has a series of five inwardly and radially projecting spokes 7 which. spokes, in turn, support a ring 8 that is' formed integral therewith.

The said ring 8 is shouldered, as shown at 9 and threaded, as indicated at 10, in order to receive an annulus .11 which has a flange matin is fixed in the ring 6 by a set screw 12.

A set of five spokes 13 project inwardly The outer end of the core is reduced in diameter, as denoted at 17, and slidingly receives an inner die member 18 which has a with the. shoulder 9 and athread co Uoperatmg with the thread 10. Thisannulus recess 19 at one end so as to enable the said die member to also slide uponthe body of the 1 core 16, as clearly shown in Fig. 2.

The reduced portion 17 of the core is.

.threaded and carries a nut 20 for adjusting the die member 18on the said core.

A port 21 is formed in the front piece 1 and threaded at 22 for the reception of a pipe leading from a suitable source (not' shown) of non-adhesive. powdered material,

cates with a peripheral channel 23 formed in the outer circumference of the core bridge such as talc. The said port 21 communi member. 6, and said" channel 23 is also in communication with ducts 24, two of which are located in each of the spokes7. The said ducts 24 communicatewith a channel 25 that is formed in the inner periphery of the ring 8 and outer periphery of the annu- 111511, and said channel 25, in turn, communicates with ducts 26, two of which pass through each of the spokes 13... The last named ducts open into a chamber 27 in thehub 14, which chamber communicates with a longitudinal duct 28., that extends through the core 16 from end to end. The arrangement just described enables the non-adhesive powder to be injected through theport 21 to the interior of the tube being extruded threaded into the member 29 holdsthe porand 36 are normally heldin their most fortion 31 of the die firmly in place.

The bore of the portion 31 is shouldered, as indicated at 35 to receive, with a tight fit,

the die element 36 wliich constitutes a part of the outer die member that immediately coacts with the inner die member 18.

Itwill be seen that the said members 18 ward position with respect to the tubing machine by the movement of the material being extruded.

Set screws 37 are threaded into the member 29, in radial "disposition, and abut the portion 31 so as to provide means for exactly centering the latter with respect to the member 29 and to the core 16 and die member 18.

By reference to Fig. 2 it will be seen that the interior ofthe member 29 is sharply're .duced in diameter in a direction forwardly of' the-core bridge so as greatly to restrict the size of the passage around the core at this point. This taper is marked 38. Imnjediately forward of this taper comes a cylindrical portion 39 of quite small diameter, after which the bore of the said member 29 is curved outwardly or flared, so as to increase its diameter to substantially the diameter immediately adjacent the core bridge. This flared portion is marked 40. The outer portion-31 of the die matches the portion 40 of the bore of the member 29land 1s sha' ed so as to, atflfirst, slightly increase the diameter of the opening surrounding v diately adjacent the front face ofthe die and is marked 42.

the core and then gradually, by an inward 5o taper, reduce the same until the, front face of the die'members is ahnost reached. This portion of the bore is marked 41. Imme members the said bore becomes cylindrical and of'a size slightly greaterthan the 'diam;

eter of the inner member 18 of thedie. This portion of the bore is actuallyformed upon the element 36 carried by the portion 31,

The inner die member 18jis taperedfas indicated at 43, so that its diameter in-. creases from its .rear endtowards its front I face until it ap roximates the. front, face,

at whichvtime t e taper is reversed so as proached and actually reached. This taper -on-theimmediate front portion of the member 18 is marked ,44 and cooperates with the cylindrical portion 43 on the outer diameter 36 to provide means for adjusting the width of the opening between the members 18 and 36 by sl ding the member '18 longitudinally, one way or another, on the reduced portion 17 of the core, by means of the nut 20. f

It should be noted that the core 16 has a taper which slightly increases its diameter opposite the part 38 of the bore of the member '29 and that it then has an opposite taper which sli htly decreases its diameter ina forward direction until the inner die" member 18 is reached.-

The structure hereinabove described enablesthe material being pushed forward by the screw or plodder to pass through a considerable number of openings in the core bridge, which openings are arranged in two circular series, each opening-in the one series being staggered with respect to adjacent openings in. the other series. This plurality of openings and, additionally, the said arrangement of such openings, serves to break up the material somewhat and thereby prevent it from passing around the core and to the die in knotted formation, or other ob jectionable formations in which it frequently I appears immediately at the delivery end of the screw. Any disadvantage which might result from this breaking up of the material, .mto several streams or ribbons 1s 1mmed1-- compress the various paits of the materialthat h. ve passed through the core bridge. The in erial thus compressed is maintained in such a condition when passing through the portion 38 of the bore, but it is permitted to expand when encountering the portion 40 of the bore. and is onlv gradually again compressed-as 'it reaches thedie and is extruded -ffim'the opening thereof. This arrangementallowing for expansion of the materlal before it reaches the die prevents'itfrom being 'forcled too rapidly; through. the die and-thus. revents the presence ofimperfecvtionsingt e-extruded tubing.

etenofi'ft 'ec'ore;immediately opposite the taperedportion 38. 1 'theme'mber 29 cooperates' finfheeompressing of the material at [this junc "rej,, already described, while the per. ,of. the .core in the opposite .igradua direction -';forwardly of :said' portion. 38 fa- Icilitates the travel of the material and'its extrusion through the die.-

-,It wil'l'be understood that variouschanges fliraybe resorted to in the form, construction and arrangement of the several parts,-

- without departing from the spirit and scope of my invention, and hence I do not intend 'The zslilglitjgradual increasein'th'e" diam-v to belimited to the details herein shown and "described, except as they may beincluded in the claims.

IVhat I claim is: 1 f 1 I 1. In a tubing machine, a core bridge com: prising a plurality of separate annular members secured together one withinv the other.

2. In a tubing machine, a core bridge comprising four annular members one within the other. I I

3. In a tub ng machine, a core bridge comprising a plurality of separate annular meni-v bers concentricall arranged and secured together one within the other.

4. In a tubing machine, a core bridge comprising two separable portions, each portion including a pair of. rings connected by spokes, said portions being secured together one within the other and locked in cooperatlve engagement.

.In a tubing machine, a core bridge having a plurality of annular air passages, said ship.

passages being connected by a plurality of radial ducts arranged in staggered relation- 6. In a tubing machine, a core bridge hav ing aplurality of concentric annular air passages, said passages being connected by a plurality of radial ducts arranged in staggored relationship. i

7 In a tubing machine, a core bridge comprising, an outer annulus, an intermediate annulus and a central annulus, the outer an nulus being connected to the'intermediate annulus by a plurality of spokes, and the intermediate annulus being connected to the central annulus by a plurality of spokes, an

, annular air passage in the outer annulus, an

annular air patsage in the intermediate an-' nulus, a-chamber in the central annulus, and ducts 111 said spokes connecting said annular passages with each other and the annular passage in the intermediate annulus with the chamber.

8. In a tubing machine, a core bridge comprising, an outer annulus,- an lntermediate annulus and a central annulus, the outer annulus being connected to the intermediate annulus by a plurality of spokes, and the intermediate annulus being connected to the central annulus by a plurality of spokes,

1 said 5 okes bein arran ed in sta ered reintermed ate annulus being connected to the central annulus by a plurality of spokes, an

i s q 1 ,026"

annular air passage inthe intermediateannulus, a'chamber in the central ann ulus,jand a plurality of ducts inindividual spokes connecting said annular passages with each other and the. annular passage in the intermediate annulus with the chamber.

10.; In a tubingymachine, acore bridge comprising, a plurality .ofseparate annular members concentrically arranged and secured together one within the other, said membersbeing connected by a plurality of radial spokesand provided with annular air passages, and said spokes having radial ducts connecting saidannular air' passages.

11. In a tubing machine, a core bridge comprising, a plurality of separate annular members concentrically arranged and screw threaded together one within the other, said members being connected by a plurality of radial spokes and provided with. annular air passages, and said spokes having radial ductsconnecting said annular air passages.

12.;A tubing machine head having a bore through which the material to be extruded may be forced, said bore having a tapered portion which restricts its diameter, a cylindrical portion which maintains its restricted diameter, and a curved flared portion which expands its diameter, when considered in a forward direction. 7

13. A tubing machine head having a bore through which the material to be extruded may be forced, said bore having a tapered portion which restricts its diameter, a cylindrical portion whiclnnaintains its restricted diameter, a curvedflared portion which expands its diameter, and a" tapered portion which again restricts its diameter, when con-' sidered in a forward direction.

14. A tubing machine head'having a bore 1 may be forced, said bore having a tapered portion which restricts its diameter, a cylindrical portion which maintains its restricted d'ameter, a curved flared portion which ex- 15. A tubing machine head having a bore through which thematerial to be extruded,

pands its diameter and a tapered portion which again restricts its diameter, when con sidered in a forward direction, in combination with a core located in said bore, whichv core is tapered in opposite directions toward its ends. I 16. A tubing machine head having a bor through which the material to be extruded may be forced, said bore being restricted and 'eter in a forward direction.

17; A tubing machine head having a bore through which the material to be extruded may be forced, said bore being restricted, expanded and aga n restricted, when considered in a forward direction, in combination with a core located in said bore, which through which the material to core is tapered in opposite directions toward its ends, and a die. member mounted on said core, which die member is flared soas to increase its diameter in a forward direction.

18. A tubing machine head having a bore may be forced, said bore having a tapered portion which restricts its diameter, a cylindrical portion which maintain; itsrestricted diameter, a curved flared portion which expands its diameter,avhen-considered in a forward directicn,.'in combination with a core located in said bore, which core is tapered in opposite directions toward its ends, and a die member mounted on said core, which die member is flared so as to increase its diameter in a forward direction.

19. A tubing machine head having a bore through which the material to be extruded may be forced, said bore having a tapered portion which restricts its diameter, a cylindrical portion which maintains its restricted diameter, a curved flared portion which expands its diameter and 'a tapered portion which again restricts its diameter when consideredin a forward direction, in combination with a core located in said bore, which core is tapered in opposite directions toward itsends, and a die member mounted on said core, which die member is flared so as to increase its diameter in a forward direction.

20. A. tubing machine head having a bore through which the material. to be extruded may bejjforcechi, said bore being restricted and then expanded, When considered'in a forward direction, in combination with aextruded,

core located in said bore, which core is ta pered in opposite directions toward its ends, and a die member mounted on said core, which die member is tapered in opposite directions toward'its ends.

21. A tubing machine head having a bore through which the material to be extruded may be forced, said bore being restricted,

expanded and again restricted, when consideredin a forward direction, incombination with a core located 1n said bore, whlch core is. tapered in opposite directions to'wai'd its ends, and" a die member mounted on said core, which die member 1s tapered 1n opposite directions toward its ends.

22. A tubing machine head havinga bore through which the material to be extruded may be forced, said bore having a tapered portion which restricts its diameter, a cylindrical which expands its diameter, when considered in a forward direction, in combination with a core located in said bore, which core is tapered in opposite directions toward its ends, and a die member mounted on said core, which die member is taperedin opposite directions toward its ends.

23. A tubing machine head having a bore through which the material to bev extruded may be forced,,said bore having a tapered portion which again restricts its diameter, a, when considered 111 21 forward directlon, 1n

combination with a core located in said bore, which core is tapered 1n opposite directlons toward its ends, and a die member mountortion which maintains its re-' stricted dlameter, a curved flared portlon 70 ed on said core, which die member is tapered 9 in opposite directions toward its ends.

24. A tubing machine head having a bore through which the material to be extruded may be forced, said bore. having a portion adapted to house the screw, a chamber in 5 front'of said portion and in the rear 'of the bridge location, a tapered portion which restricts the .bore diameter in front of the bridge location, and a curved flared portion which expands the bore diameter in front of the tapered portion. p 25. A tubing machine head having a bore through which the material to be extruded may be forced, said bore having a portion adapted tofhouse the screw, a chamber in front of said portion and in the rear of the bridge location, a tapered portion which'restricts the bore diameter in front of the bridge location, a, curved flared portion which expands the bore diameter inlfront of the tapered portion, and a restricted portion of substantially constant diameter between the t apered portion and the flared portion. w v i s 26. A tubing machine head through which the material to be extruded maybe forced, said bore having a portion adapted to house the screw, a chamber in front of said portion .and in the rear of'the having a'bore bridge location, a'tapered portion which restricts the. bore diameter in front of the bridge location, and a curved flared portion which expands the bore diameter'in front of the tapered portion,- the portion ofthe head which includes said tapered and flared portions being removable.

27. A tubing machine head having a bore through which the material to be extruded may be forced,'said bore having a portion adapted to house the screw, .a chamber in 1 mamas froht. ofsaid portion and in the rear of the bridge location, a tapered portion which re-- 'stricts the bore diameter in front of thebridge location',' a curved flared portion' which expands the bore diameter in front of the tapered portion, and a restricted portion of substantially constant diameter between the tapered 'portion and the-flared portion, the portion of the head which in- 15 29. In a tubing machine, a. coireya die ,cludes said tapered, flared and restricted portions being removabler 28'. In a v tubin ed on said core.

, machine, a core, and a" die member slidahly and adjustably mount-.

member. mounted thereon, and means for slidably' adjusting the die member longitudinally of the core.

30. In av tubing machine, a core having a plurality of diameters. a die member havdie member being mounted onthe core with its plurality of interior diameters engaging the plurality of diameters of the core, and

20 mg a plurality of interior diameters, said Y as my invention, 1 have signed my name a this 18th da of Nov., 1924., -r .VERuON ROYLE.