US1768790A

US1768790A - Head for extruding machines

Info

Publication number: US1768790A
Application number: US226156A
Authority: US
Inventors: Royle Vernon
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-10-14
Filing date: 1927-10-14
Publication date: 1930-07-01
Anticipated expiration: 1947-07-01

Description

July 1, 1930. v. ROYLE HEAD FOR EXTRUDING MACHINES 2 Sheets-Sheet 1 Filed Oct. 14, 1927 IN VENTOR FKWW 5 1 ATTORNEYS July 1, 1930. v. ROYLE 1,768,790

HEAD FOR EXTRUDING MACHINES INVENTOR Jig, ATTORNEY Patented July '1, 1930 vnmvon BOYLE, on rn'rnnson, NEW JERSEY H 7 HEAD non EXTRUnING MACHINES A Application filed October 14, 1927. Serial 110,226,156.

This invention relates to an improvement inhea'ds for extruding machines, and has for an-object to provide a device of the character' which is so constructed as to enable the ejection of tubed material 'or of strained material through a plurality of outlets, the material being extrudedv by a single screw or plodder. i j p v e 1 V I Another object consists in; providing such a device in which the two outlets for the ejected material are at an angle to each other. t

Another object consists-in providing such a device inwhich the chamber ofthe head, immediately in advance of the screw, is fiar'ejd'forwardly oroutwardly on lines sub stantially parallel with the longitudinal axes of the outlets. t e I A: further object consists in providing certain improvements in" the form, construe.- tion'and arrangenient of the several parts,

whereby the above named and other objects may efi'ectively be attained. 4

Practical embodiments of the. invention are represented in the accompanying drawings','-in}which I f g p Fig-1" represents a plan view, partly in section, of thedevic'efitted' as a tubing ma chine;'and=' 1 i Fig. Qrepresents a similar view of the device fitted as a straining machine.

Referring tothe form shown in Fig. 1, the =mach-ine casing, .to' which the head is adapted to be attached, is indicated at 1, and it is provided Wltll'th usualbore liner represent'edat 2.0 Thezscrew-r or plodder' is marked3V i' f V T-lie 'head,'as a whole, is denoted by 4, and itis fitted to be secured to the machine casing l'by nuts 5 thatare threaded upon stud bolts 6 protruding from th'emachine casing. It is usually desirable to 'interpose a washeror packing ring 7 between-the head andjthe machine casing- Suitable passages 8' may be formed in the head la' forthe circulation of a-temperature controllingmedium, as is customary in these devices. f

Theinterior' of the head 4, adjacent the front or outer endof thescre'w. 3,:is flared outwardly as indicated'ati), and the said head is provided with a pair of openings or

holes

10, 11 which have their longitudinal axes substantially parallel with the flaring walls 9.- This provides a plurality of outlets for the material extruded by-t'he screw 3 and a flaredchamber between the screw receiving portion of the head and the outlets'or openings. a 4

In each of the holes or

openings

10,11, W there is inserted a set of tubing elements or parts fonforining' the material into tubes, each ofsaid sets being liket he other.

The'specific form and arrangement of these tubing sets constitutes no part of the present invention, but is covered by application for- United States paten't,filed by J amesNV. Devine, September 1,1927, Serial No. 216,929. Accordingly, the said parts will merely be referred to without detailed description of their construction, arrange ment, -or function. V

The core bridge is marked 12, and it is held seated in a shoulder 13 formed in'the head' tiby a member 14] that is threadedinto theopeningll'. The core is marked 15 and y it has'arearextenjsion l6 and a forward eXT tension 17/ The core bridge", core, and extension 17 have openings therein" for the influx lot a nonadhesive powder and its distribution onthe inner'walls of the tube being extruded. The said powder may be fed in through an opening 18, shown at the right hand side in Figwl. An annulus 19 is fitted'into'the interior of the member and held in position by a part 20that is seated in the member l and locked therein by a ring nut 21., The part 20is centered by set screws-22, and it carries aring'23 that is intended to cooperate with an inner die member2 l fitted on the core 15, to ram the opening through which the tube is extruded. The end of the extension 17 is fashioned-forthereception: of a wrenchas indicatedat25, at the right of Fig. 1. Referring to the form shown in Fig.- 2, it

may be said that the only difference lies in the substitutionof two setsof straining'elements for the sets of tubing elements shown inFi 1. 1

The said sets of straining elements are the same, so that one only will be described. A ring 26, which is internally flared, is seated a inst the shoulder 13 of the head 4.

The said ring is L-shaped in cross section and it receives a screen 27 and a foraminous plate 28, the holes of which are marked 29.

The said late and screen are held in engement with the ring 26, and the latter is dld seated in the head 4, by a ring nut 30 that is threaded, as indicated at 31, into an opening of the head 4. The interior of the ring nut is outwardly flared, but not as abruptly as the interior of the ring 26. 1

The front portion of the outside of the ring nut 30 is of angular formation for the reception of a suitable wrench. k

In operation, referring to both forms, the material is urged forwardly by the screw 3 and thence passes outwardly through the sets of tubing elements or straining elements, as the casemay be. Owing to the fact that each of'the

openings

10 and 11 in the head 4 is as large in area as the screw receiving portion or bore of the head, the effective outlet for thematerial is at least twice'the size of the said screw receiving portion so that very free movement of the material is permitted and back pressure thereof upon the screw greatly decreased. Furthermore,

when the tubing elements are employed, two

tubes-are simultaneously produced, and this arrangement facilitates t e rapid extrusion of tubes of comparatively small diameter by the action of a screw of comparatively large diameter, whichresult could not be obtained tonearly the same degree by the employnient of a single opening head in connection with n. screw. When the straining elements are used, as shown in Fig. 2, there is a certain advantage resulting from'the facts that the ring 26 1s flared outwardly, the screen is greater in area than the screw receiving portion of the head, and the locking ring 30 is flared outwardly. However, as these features are claimed in another application of mine, they will not be claimed herein.

The .structure of this head is not complicated, is readily produced, and is adaptedfor use with any approved form of extruding machine.- here'i's no difference in the form of .thehead whether it be for employment with the tubing elements .or the strainingelements, so that its field of use is enlarged. l

It will be understood that various changes ma be resorted to in the form, construction, an arrangement of theseveral parts, without departing from the spirit and scope of my invention;lhence, I do not intend to be limited to the details herein shown anddescribed except asthey may be included in the claims.

. What I claim is: V

1. A head for cooperation with the screw axes of said openings being in substantially the same plane as the axis of the screw.

, 2. A head for cooperation with the'screw of an extruding machine, said head having a plurality of tubular openings interconnectedadjacent the screw for the passa e of material therethrough, the longitudinal axes of saidopenings being in substantially the same plane as the axis of the screw, eac of said openings being adapted for the reception of either tubing elements or straining elements.

3. A head for cooperation with the screw of an extruding machine, said head having a pluralit of tubular openings interconnected adJacent the screw for the passage of material therethrough, the longitudinal axes of said openings being in substantially the same plane as the axis of the screw, each oflsaid openings having a cross sectional area-substantially as great as the cross sectional area of the screw receiving portion of the head.

4. A head. for cooperation with the screw of an extruding machine, said head having a pluralit of tubular openings interconnected ad]acent the screw for the passage of material therethrough, the longitudinal axes of said openings being in substantially the same plane asthe axis of the screw, the combined cross sectional area. of said openings being. greater than the cross sectional area of the screw receiving portion of the head. i a y 5. A head for cooperation with the screw of an extruding machine, said head having a pluralit of tubular openings intercom nected .ad acent the screw for the passage of material 'therethrough, the longitudinal axes of said openings being in substantially thesame plane as the axis of the screw, and a chamber formed in said head between said openings and the screw receiving portion of the head, said chamber being outwardly flared from the screw receiving portion toward the openings. 6. A head for-cooperation with the screw of an extruding machine, said head having a pluralit of tubular openings interconnected ad acent the screw forthe passage of material therethrough, the longitudinal axes of said openings being in substantially the same plane as the axis of the screw, and a chamber formed in said head between said openings and the screw receiving portion of the head, said chamber being outwardly flared from the screw receiving portion-toward the openings, the walls of said chamber being substantially parallel with the longitudinal axes of the openings.

7. A head forv cooperation with the screw of an extruding machine, said head having a plurality of tubular openings interconnected adjacent the screw for the passage of material therethrough, the longitudinal axes of said openings being in substantially the same plane as the axis of the screw and diverging from a pointadjacent the end of the screw, each of said openings being adapted for the reception of either tubing elements or straining elements. 1

8. A head for cooperation with the scre of an extruding machine, said head having a plurality of tubular openings interconnected adjacent the screw for the passage of material therethrough, the longitudinal axes of said openings being in substantially the same plane as the axis of the screw and diverging from a point adjacent the end of the screw, the convergent ends of the tubular openings forming a chamber adjacent the end of the screw, each of said openings being adapted forthe reception of either tubing elements or straining elements.

In testimony, that I claim the foregoing as my invention, I have signed my name this 11th day of October, 1927. j

VERNON BOYLE.