US1322944A - pierce - Google Patents

Description

' J. F. PIERCE;

MANDREL FOR USE WITH APPARATUS FOR FORMING wees.

APPLICAHON FILED MAR. 30.191 7.

Patented Nov. 25, 1919.

w E NH NW 2 SHEESSHEET & E

a: 5 wnlm m I..-

i. F. PIERCE. MANDREL FOR USE WITHYAPPARATUS FOR FORMING TUBES.

APPLlCATlON FILED MAR. 30.1917.

Patented Nov, 25, 1919.

2 SHEETS-SHEET 2.

h% m m 7 m Q W mm m \1 m f r fin F NW N g m 4 5N m N m Q R H m N W Q m QM NH 6N5 an L T L Q @N O w Q Q as A m m N xlaliw Q QN lllla Q.

IINIIED stares rArnn ir oration. I

JAMES E. PIERCE, or GLYNnIoH, DELAVJARE, Assrenoa T0 AMEBIOAN vULcA nIznD FIBRE 00., or WILMINGTON, DELAWARE, A CORPORATION or DELAWARE.

MANDREL FOR USE WITH APPARATUS FOR FORMING TUBES.

raaaeae.

Specification of Letters Patent.

Patented Nov. 25, 1919.

- Application filed March 30, 1917. Sen'al No. 158,768.

To all whom it may concern:

Be it known that I, JAMES F. Plnnon, of Glynrich, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Mandrels for Use with Apparatus for Forming Tubes, whereof the following is a specification, reference being had to the accompanying drawings.

The invention relatesmore particularly to a mandrel for use in a machine of the above character, wherein the tube is wound on the mandrel, completed thereon, and after it is finishechis withdrawn therefrom.

An object of the invention is to provide a mandrel of the above character, wherein the'body portion thereof is formed in sections adapted to be collapsed to facilitate the withdrawing of the finished tube. V

A further object of the invention is to provide a collapsible mandrel of the above character with devices wherein certain of the body sections may be first withdrawntoward the center of the mandrel before-the movement of the other sections so that the last-named sections may be caused to overla Ihese and. other objects will in part be obvious and will in part be hereinafter more fully disclosed. V

In the drawings, which show by way of illustration one embodiment of the invention, Figure I, is a longitudinal sectional view through a mandrel having my improvements embodied therein, said view being on the sectional line I, I, in Fig. III.

Fig. II, is an end view of the same, showing the mandrel collapsed.

Fig. III, is a cross sectional view on the line III, III, of Fig. I.

, Fig. IV, is a view similar to Fig. I, with the parts shifted for collapsing the mandrel.

Fig. V, is a view similar to Fig. III, with the parts shifted for collapsing the mandrel.

- Fig. VI, is a sectional view on the line VI, VI, of Fig. III.

Fig. VII, is a detail sectional view along the line VIIVII of Fig. II, through the head and one of the supporting collars showing the adjusting screw'for shifting the shaft relativeto'the head; 7

My mandrel is particularly adapted for forming tubes from a web of fibrous material, such as paper and the like. The web is wound on the mandrel and-is subsequently subjected to a rolling and heating process,

for finishing the tube, after which the tube 18 slipped from the mandrel. Said mandrel consists of a central shaft and supporting heads which are mounted on this shaft, and also body sections which are supported by the heads andthe shaft. These body sections are so supported that they may be moved toward the center of the mandrel and the mandrel thereby collapsed to facilitate the withdrawing of the tube therefrom;

Referring more in'detail to the drawings, my improved mandrel consists of a body portion which as herein shown, is formed in foursections 1, 2, 3, and 4:. At the ends of the mandrel there are supporting heads 5, and 6. Extending through thesupporting heads 5, and 6, is a shaft 7. Supporting heads 5, and 6, are in the form of spiders, and each comprises four radial arms. Two of these armsl, 8, are shorter than the other two arms, which are indicated at 9, 9. The edgesof theibody sections 1, 2, 3, and 4, which meet directly over the arms 8, 8, are chamfered in opposite directions. as at 10, and 11. The other edges of the body sections which meet over the arms 9, 9, are. squared. These body sections are also each provided with inwardly projecting arms 12, which are'pivoted at 13, to arms 9, 9.

Fixed to the arms 9, 9, and. extending from end. to end of the. cylinder are spacing. and supporting webs 14, which remain in fixed position relative to the arms. By this arrangement the heads 5, and 6, when considered in conjunctionwith the fixed spacing webs 14, afford a rigid skeleton for the support of' the movable part of the mandrel. Also extending from end to end of the cylinder are webs 15, these webs, however, having sliding engagement with the arms 8, 8.

'Mountedcn the shaft 7 ,x are two spaced collars 16, and 17. Thecollar 16, is connected by links 18, with the webs. 15, while the collar 17, is connected by links 19, with.

. the webs 15. The collars16 ,-and 17, are se' movement of the screw. Inasmuch as the collar 17, is fixed to the shaft 7, this movement the collar causes theshaft to be shifted endwise, andwith it the 'collar 1 6a A link 25, is pivoted at one end to a lug 55, on the section 1, and at the'other end to a lug 2.6, on the web 15.; A similar link 25, is pivoted to the oppositeweb 15, and the section 4-. A link 27, is pivoted to a lug 57, on the section 2, and also to a lug 28,911 the -web A similar link 29, is priptedito the lug 59, on the body section E3, and to the web 15. it is to be noted that in the, expanded state of the mandrel, as

shown in Fig. 111, the links 27,7and 29,

are substantially perpendicular to theplane of the webs 15, while, thelinks 25, are mclined to the plane of the webs 15. The result of this;positioningof these links is as' follows:

As has beenexplained, the heads 5, and'G, are fixed and immovable, so that when the shaft: 7, is moved, the webslo, cannot move *longitudinallyiwith it, b-ut'the motion of the collars f 16, a and 17, transmitted through the-links- 18,"andg19, causes the webs 15, to move radially. inward toward the shaft 7.

Duringthis movement of the webs 15, thelinks 27, and 29, at first move the. sec- .tions' 2, and 3,, to which they are attached very slightly, owing, to theright angle dispositionof thelinks relatlveto the' plane of the webs, while theJlinks ;will imme-V diately draw in the free endsoi' the body sections-1, and 4, Ztofwhi-ch they are attached, and this inward movement of the sections 1, and 4:, causes them tobe moved beneath {the free ends of the sections 2, and, A continuedlnward movement, of all i 40 the webslnltimately draws in the sections 2, and 3," and their free, ends will overlap the free ends, of the 7 sections, 1, and 4, as

shown :in Figs. 11, and V, in which the mandrel is collapsedand the tube indicated at T 'isreleased, so that it may be readily;

slipped from-the mandreh --The arrangement and proportioning of the links referred to afi'ordsin effect a delayed motion, so that vone section. may be withdrawn befo'rethe other. It is obvious that this. delayed motion may be; accom-- 'plished in other .ways than 'that herein shown. I t1on.cons1'sts inthe means for collapsing the mandrel by causing the body sections-,whieh when in place form a full' Cylinder to overw It. is, ,therefore, obvious that minor changes. in .tlie 'arrangement of the parts and the details of construction may bemade without departing fromthe spirit of the invention, as set forth in the appended claims.

Having thus described my invention, I claim: it

; -1. A mandrel for-tubewinding, includ- The essential ieature of the inveninp; supporting heads, a collapsible body compr1s1ng ad]acent sections supported on said heads so as to swing toward one an= other and the center oil the mandrel, in opposite directlons w1th reierence to sald heads, t'ofcollapse the-body; and means for so swinging said heads, one in advanceof the otherjso that they shall overlap, in collapsing said may. r

2. A. mandrel for tube-windingmachines ineluding' oppositely webs and oppositely disposed radially movable webs, a pair or sections pivotedito each stationary web on opposite sides thereof, and means connecting said pairs of sec tions to said movable-webs on opposite sides thereof, whereby one section is moved inwardly prior to'the adjacent section, so that said sections are caused to overlap.

8, mandrel for tube-winding machines I I includinga plurality of pairs ofsections forming acircular support, oppositely dis-. posed'pairs of stationary and radially mov-V able webs, andmeans for pivotally connect ing each section with .a stationary and move is movedinwardly prior to the adjacent" section, so 'thatthe' sections are caused toll overlap, a 1 n v e 3 4. A mandrel for tube winding machines, including supporting heads, body iconiposedaoi a. plurality of sections, 'meanslfoir pivotallysupportingsaid sections on said heads, movablewebsadapted to move .radially of said heads, and means whereby, when said websare-moied toward the center of saidmandrel, said sections are moved inward" at adjacent-edges, one prior to the other, so thatsaid sections are causedgto overlap.

' v5. A mandrel tortube winding'machines, 1'

including supporting; heads, a: body composed of, a plurality of sections carried-there by, arms supporting eachg'section, saidfar'ms being pivoted on thejsupportinp; heads, and

v disposed stationary disposed on'opposite sides offtheicenter of the head, ,movable webs disposed adjacent the meeting edges} of] the body sections,

means 'forfmoving saidwebs tov zard and from the center of the, mandrel, links con-j nectmg sa d webs to the movable body sections, said; links being; sofc'onstructecl(and 90 able web, whereby one section of eacjhpair 5

Images