US3548724A - Apparatus and method for forming indefinite length tubular articles - Google Patents

Apparatus and method for forming indefinite length tubular articles Download PDF

Info

Publication number
US3548724A
US3548724A US733940A US3548724DA US3548724A US 3548724 A US3548724 A US 3548724A US 733940 A US733940 A US 733940A US 3548724D A US3548724D A US 3548724DA US 3548724 A US3548724 A US 3548724A
Authority
US
United States
Prior art keywords
belt
core
mandrel
pinions
convolution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US733940A
Other languages
English (en)
Inventor
Marcus A Hall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automation Industries Inc
Original Assignee
Automation Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automation Industries Inc filed Critical Automation Industries Inc
Application granted granted Critical
Publication of US3548724A publication Critical patent/US3548724A/en
Assigned to AUTOMATION INDUSTRIES, INC. A CORP. OF DE. reassignment AUTOMATION INDUSTRIES, INC. A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PCC TECHNICAL INDUSTRIES, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/74—Winding and joining, e.g. winding spirally helically using a forming surface inthe shape of an endless belt which is recycled after the forming operation

Definitions

  • the 'mandrel must be flexible enough to be collapsed at the proper time for removal of the tubular article when that article is sufficiently formed to support itself and yet be rigidly supported during the fabrication of the tubular wall of the article while on' the mandrel.
  • Yet another object is to provide mandrel surface moving means applied at a desired location on that surface.
  • Another object is to provide a mandrel surface moving means which may be disposed within the mandrel core.
  • While a further object is to provide improved guideways to receive the moving mandrel surface.
  • Another object is to provide an impro' ed collapsible mandrel surface.
  • Yet another object is to provide improved means for moving the collapsible mandrel surface over the mandrel core.
  • FIG. 1 is a plan view of my apparatus
  • FIG. 2 is a side elevation partly in perspective of a portion of the apparatus shown in FIG. I;
  • FIG. 3 is an end elevation of the apparatus shown in FIG. 1 as viewed from the left end as shown-on the drawing of FIG. 1;
  • FIG. 4 is a plan view, partially in section and somewhat enlarged, of a portion of the mandrel core as shown in FIG. 1;
  • FIG. 5 is a vertical section taken on line 5-5 of FIG. 4;
  • FIG. 6 is a vertical section somewhat enlarged taken on line 6-6 of FIG. 5;
  • FIG. 7 is a schematic view showing the angular displacement of a group of driving pinions
  • FIG. 8 is a view of a portion somewhat enlarged of the finished tubular article as produced by the apparatus embodying the invention.
  • FIG. 9 is a vertical section'somewhat enlarged taken on line 9-9ofFIG.l; f 1
  • FIG. 10 is a vertical section somewhat enlarged taken on line 10-10 of FIG. 9; v
  • FIG. 11 is a vertical section showing another embodiment of my invention relating especially to a form of moving mandrel surface belt
  • FIG. 12 is analogous to FIG. 11 in showing another embodiment of the disposition of the belt; 1
  • FIG. 13 is a schematic view showing the wall fiexure when a tubular article is bent in a curve position
  • FIG. 14 is a cross section showing still another embodiment involving the belt surface
  • FIG. 15 is an enlarged longitudinal cross section of a portion of the tubular article wall formed on the belt embodiment shown in FIG. 14; 1
  • FIG. 16 is a longitudinal vertical cross-sectional view of the mandrel core which is the subject of another embodiment
  • FIG. 17 is a cross-sectional view taken on line 17-17 of FIG.
  • FIG. 18 is a cross-sectional view taken on line 18-18 of FIG. 16;
  • FIG. 19 is a perspective view of a section 'of belt in another embodiment
  • FIG. 20 is a perspective view of a section of belt in still another embodiment.
  • FIG. 21 is a sectional view taken on line 21-21 of FIG. 2.
  • numeral 11 denotes a base plate or portion of a frame on which the essential components are mounted.
  • the base plate 11 is supported by a suitable frame, not shown, which in turn supports other accessories including a driving motor.
  • a vertical supporting plate 12 (FIGS..2 and'S) is mounted on base plate 11 fur supporting hollow stationary cylindrical mandrel core 13 by fixing one end to the plate 12.
  • the mandrel surface is in the form of a moving endless belt 18 surrounding the mandrel core 13 in helical convolutions 19 so that as the wall material 20 in the form of a continuous strip is laid on belt 18 at one end of the core-13 (right as viewed in FIGS. 1 and 2). It is both wound on and the tube just formed is advanced to the opposite end of the core 13 (left as viewed in FIGS. 1 and 2).
  • the strip of wall material is laid on a portion of the preceding layer as an overlap 49 and secured thereto by a suitable cement or adhesive material (not shown) which is fed into the nip between the two adjoining faces of the overlap portion 49.
  • the moving mandrel surface is collapsed at the outboard end 44 (FIG. 5) after the cement issuffrciently set so that the tubular article 52 is self-supporting, by directing the advancing belt 18 into the interior of the mandrel core 13 to be returned to the starting end of the 'core 13 as will be described in more detail later.
  • the collapsing of the mandrel surface 18 comprises th guiding of the belt 18 from the helical convolutions 19 on the outside of the mandrel core 13 into theinterior of the mandrel core 13 through which it moves overx'the first and second sheaves 24 and 25 respectively to the beginning area on the outside of the core 12.
  • the first sheave 24 is provided with tension adjusting means (FIG. 2) by mounting its axle 46 on a sliding bearing member 47. This member is moved horizontally by a fluid operated piston and cylinder 48 to effect the desired tension in the belt 18 upon operation of suitable valves (notshown).
  • the drive pinions l5, l6 and 17 when properly adjusted angularly are fixedly mounted on drive shaft 14.
  • This drive shaft 14 is journaled in the mandrel core 13 by suitable means (not shown) and extends through plate 13 to receive a sprocket 21 and chain 21a driven by an electric motor 26.
  • An aperture 53 formed in the wall of the core 13, enables the pinions 15, 16, and 17, when mounted in the interior of the core, to extend through the wall of the core 13 to engage the belt 18.
  • properly formed teeth 39 on the pinions 15, 16, and 17, and teeth 38 on belt 18 so that a uniform rate of surface speed is imparted to the several convolutions 19 of belt 18 which may be recognized in FIG. 6 as analogous to a pinion (15 for example) driving an annular gear (the belt convolution 19).
  • properly formed teeth I refer to a type of gear teeth having a uniform pitch.
  • I may also form the teeth 38 and 39 on' a skew angle (FIG. 4) so that the direction of the force F as applied corresponds to the angle II of the helical convolutions 19 and thus tending to maintain the belt in the center of the helical groove 22.
  • the belt 18 is placed in position over this special belt 18' and engaging the teeth of the respective pinions in a belt engaging sector.
  • the pinions may require angular positioning on shaft 14 to be described later.
  • the pinions are fixed to the drive shaft 14 by any suitable means such as set screws. As the shaft 14 is driven by the source of power the pinions pay out the slack and move the belt 18 with the proper clearance and lineal rate of belt speed.
  • tooth T Assume tooth T to be at the center of the belt engaging sector (see are K FIG. 6) of first pinion 15; T the corresponding center tooth for belt engaging sector K for pinion 16 and T the center tooth for belt engaging sector K" for pinion 17.
  • the pinions may not be drive pinions but as pinions fixed to a common rotating shaft merely to regulate the clearance slack in the belt convolutions since the belt may be driven by other means than the aforesaid pinions as for example by. the outside circumferential surface of belt being driven by outside means While in certain of the drawings (FIGS. 4, 5, and 6) the aperture 53 in the mandrel core 13 through which the pinions engage the belt 18 appears at the top of the mandrel core this aperture 53 is not limited to the top and may be in any suitable position about the circumference of the mandrel core.
  • the drive pinions as described are mounted on a single drive shaft but depending on the size of the mandrel the drive pinions may be mounted on separate drive shafts. Furthermore, under certain conditions the guideways 22 may be omitted.
  • the reinforcing medium previously referred to is preferably a wire 33 having a predetermined resilience so as to be formed into a sort of helical spring. It first passes through a series of feed rolls 58, then passes through a second set of tube diameter forming rolls 59 to form the wire 33 to the desired diameter of the finished article 52. Next the wire, now in helical spring form, is engaged by a pitch forming roll 60 (FIG. 10) which crimps the wire 33 with an elongating bias which is restrained by the wall material of the tubular article 52, conversely biased as a retracting pitch tending to contract the tubular article 52 longitudinally or to be biased neutrally as regards contracted or extended pitches.
  • a pitch forming roll 60 FIG. 10
  • the operation of laying on the wire 33 is controlled by a wire locating arm 54 mounted on an axis parallel to the axis of the mandrel core 13 so that one end carrying a grooved finger 55 which presses against the moving beltby suitable adjustable pressure means.
  • the groove 55' receives the wire and guides and tensions it to the desired position on the wall material which is subsequently covered by the overlap 49.
  • I provide that the bottom of the first guideway convolution 22a shown at the right, as viewed in FIG. 16, to be slightly deeper x than the next succeeding guideway convolution 22b so that the outside surface of belt 18 reposing in the first guideway convolution 22a is substantially flush with the convex surface of the mandrel core 13.
  • the deepest point of this first guideway conv0lution22a is located at the tangent point (seex FIG. 16) where the wall material strip 20 is laid to the belt 18 and gradually enlarges to the normal diameter of the next guideway convolution 221) within the first full turn of the strip 20.
  • I may space the convolutions of belt 18 so that aconvex surface of mandrel core 13 lies exposed between successive convolutions and at the same time is below the surface of belt 18.
  • the width of belt 18 (measured-in a generally normal direction to the course direction of the belt) is greater than the extent of the overlap of the layer of wall material between which the reinforcing wire is laid.
  • the diameter of the finished tubular article is slightly greater at the center'of the belt section than at the midpoint between convolutions 19.' This results in a finished tubular article. which is easily bent due to the low point of the sag moving radially inward as shown in FIG. 13.
  • Another advantage of the spaced and, raised belt convolutions is to reduce the friction of the fabricated tubular article along the convex surface of the mandrel core as it is advanced.
  • FIG. 11 form the outside surface of belt 18 with a convex cross section' and with the belt convolutions closer together than in FIG. 12 which also results in a sag effect S to improve the flexibility of the finished tubular article due to the radial inward movement at midpoint previously described.
  • FIG. 14 I' provide a belt 18 with a groove 56to receive the reinforcing. wire 33 so that the overlap is formed with a portion of the 'wirecross section partially embedded. in each of the respective layers of wall material comprising the overlapped portion 49 as further shown in FIG. 15. 1
  • FIG. 19 Another embodiment (FIG. 19) using a belt 18" having the teeth located in the center portion of the belt cross section provides a wall 57 to bear. on the convex surface of the mandrel core so that the radial force bearing on this convex surface is distributed over a substantial area rather than on the ends of the teeth.
  • the belt 18 may take the form 18" as shown in FIG. 20. i
  • FIG. 20 An adaptation of the foregoing idea'is' shown in FIG. 20 where the radial force is distributed at the'center of the belt cross section with the teeth on either side-of this center portion to relieve the wear on the tips of the teeth.
  • said moving means comprising a driven wheel disposed in said core in driving engagement with saidbelt. '1;
  • said core having an aperture connecting said. passageway with said outside surface; a drive. shaft mounted in 5.
  • means for'driving said belt comprising a drive shaft mounted in said passageway; a plurality of drive pinions having belt engaging sector portions; said pinions fixedly mounted on said shaft; and said belt having gear teeth for engagement with said pinions.
  • a first guideway convolution adjacent said first end having a first belt convolution therein; a second guideway convolution adjacent said first guideway convolution toward said second end having a second belt convolution therein; said first guideway convolution having a portion recessed deeper than said second guideway convolution so that a substantial portion of said first belt convolution maintains a less radius than said second belt convolution whereby the trailing edge portion of the material strip reposing thereon will resist wrinkling as it advances tothe second belt convolution.
  • recessed continuous helical guideway convolutions disposed in spaced relation on said core to receive said belt convolutions; said belt convolutions disposed in said guideway convolutions; said guideway convolutions having a depth such that said mandrel surface portion is above the adjacent outside surface of said core so that the wall of the tubular article formed on' said surface portion will have a space in which to sag against said outside surface between adjacent convolutions.
  • said belt having a continuous groove recess in its outer surface for receiving a portion of the said passageway; a drive pinion fixedly mounted on said shaft and extending through. said aperture in driving engagement with said belt whereby said belt is moved onsaid course.
  • a mandrel device for making indefinite'length articles comprising: 1
  • guide means on the free end portion of the tubular member for directing the belt from the helical guideway convolution around the free end'of the tubular core and into the interior thereof,
  • sheave means for directing the belt'from the interior of the tubular core back to the helical guideway convolution adjacent the supportedend portion of the tubular core
  • pinion means within said tubular core extending through aperture means therein into said helical guideway convolution in positive engagement with said belt for maintaining said belt in a slidable fit within said guideway convolution; and o f. drive means for positively displacing said continuous belt along said helical guideway convolution in engagement with said pinion means and thence around said guide means through the interior of said core to said sheave means and finally back to said helical guideway convolution.
  • a continuous method of making indefinite length artithereof by means of said moving belt, so that the fabricatcles from at least one extended fabricating element which ing element is advanced by said belt continuously from comprises: the free end portion of the mandrel surface in the form of a. forming a substantially cylindrical mandrel surface supsaid article.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US733940A 1968-06-03 1968-06-03 Apparatus and method for forming indefinite length tubular articles Expired - Lifetime US3548724A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73394068A 1968-06-03 1968-06-03

Publications (1)

Publication Number Publication Date
US3548724A true US3548724A (en) 1970-12-22

Family

ID=24949706

Family Applications (1)

Application Number Title Priority Date Filing Date
US733940A Expired - Lifetime US3548724A (en) 1968-06-03 1968-06-03 Apparatus and method for forming indefinite length tubular articles

Country Status (13)

Country Link
US (1) US3548724A (enrdf_load_html_response)
JP (1) JPS528353B1 (enrdf_load_html_response)
AT (1) AT293839B (enrdf_load_html_response)
BE (1) BE733952A (enrdf_load_html_response)
CH (1) CH502138A (enrdf_load_html_response)
DE (1) DE1928201B2 (enrdf_load_html_response)
DK (1) DK127744B (enrdf_load_html_response)
FR (1) FR2010065A1 (enrdf_load_html_response)
GB (1) GB1246056A (enrdf_load_html_response)
LU (1) LU58764A1 (enrdf_load_html_response)
NL (1) NL158118B (enrdf_load_html_response)
NO (1) NO135572C (enrdf_load_html_response)
SE (1) SE353486B (enrdf_load_html_response)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863551A (en) * 1974-01-09 1975-02-04 Wiremold Co Tubular article forming apparatus
US3897297A (en) * 1973-09-12 1975-07-29 Wiremold Co Tubular article forming apparatus
US3943224A (en) * 1970-08-21 1976-03-09 Drostholm F H Method and apparatus for making continuous lengths of resin tubes
JPS51101068A (enrdf_load_html_response) * 1975-03-03 1976-09-07 Plas Tech Corp
US4174984A (en) * 1978-10-02 1979-11-20 Dayco Corporation Machine for and method of making tubular conduit of indefinite length
EP0033798A1 (en) * 1980-02-04 1981-08-19 Automation Industries Inc. Method of manufacturing flexible hose
US5833592A (en) * 1996-07-17 1998-11-10 Sonoco Products Company Method and apparatus for enhancing seam unifority in spirally wound tubes
US6036629A (en) * 1998-10-20 2000-03-14 Sonoco Development, Inc. Cylindrical composite container having a recessed spiral groove and process for manufacturing
US20100204031A1 (en) * 2007-09-14 2010-08-12 Fabio Perini S.P.A. Core winder with forming unit with a toothed belt
US20130098559A1 (en) * 2010-03-30 2013-04-25 Dcns Plant for manufacturing a rigid pipe for drawing up deep water
US10844928B1 (en) * 2017-11-22 2020-11-24 Caraustar Industrial and Consumer Products Group, Inc. Methods for making driveshaft dampers
US11383467B2 (en) * 2017-09-16 2022-07-12 Suk Tae GONG Apparatus and method for continuously producing reinforced plastic pipe using transfer film
US11781617B1 (en) * 2017-11-22 2023-10-10 Caraustar Industrial and Consumer Products Group, Inc. Driveshaft-damper tuning

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213811A (en) * 1978-05-10 1980-07-22 Automation Industries, Inc. Continuously advancing mandrel
EP0005278B1 (en) * 1978-05-10 1984-12-19 Automation Industries, Inc. Helically fabricated flexible hose and mandrel device for producing the same
US4292014A (en) * 1980-09-12 1981-09-29 Lupke Manfred Arno Alfred Feed mechanism comprising an endless member configured as a double helix
FI85231C (fi) * 1989-02-17 1992-03-25 Tuotekolmio Oy Maskin foer framstaellning av roer med spiralsoem.

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943224A (en) * 1970-08-21 1976-03-09 Drostholm F H Method and apparatus for making continuous lengths of resin tubes
US3897297A (en) * 1973-09-12 1975-07-29 Wiremold Co Tubular article forming apparatus
US3863551A (en) * 1974-01-09 1975-02-04 Wiremold Co Tubular article forming apparatus
JPS51101068A (enrdf_load_html_response) * 1975-03-03 1976-09-07 Plas Tech Corp
US4174984A (en) * 1978-10-02 1979-11-20 Dayco Corporation Machine for and method of making tubular conduit of indefinite length
EP0033798A1 (en) * 1980-02-04 1981-08-19 Automation Industries Inc. Method of manufacturing flexible hose
US5833592A (en) * 1996-07-17 1998-11-10 Sonoco Products Company Method and apparatus for enhancing seam unifority in spirally wound tubes
US6033352A (en) * 1996-07-17 2000-03-07 Sonoco Development, Inc. Method and apparatus for enhancing seam uniformity in spirally wound tubes
US6036629A (en) * 1998-10-20 2000-03-14 Sonoco Development, Inc. Cylindrical composite container having a recessed spiral groove and process for manufacturing
US20100204031A1 (en) * 2007-09-14 2010-08-12 Fabio Perini S.P.A. Core winder with forming unit with a toothed belt
US20130098559A1 (en) * 2010-03-30 2013-04-25 Dcns Plant for manufacturing a rigid pipe for drawing up deep water
US9061475B2 (en) * 2010-03-30 2015-06-23 Dcns Plant for manufacturing a rigid pipe for drawing up deep water
US11383467B2 (en) * 2017-09-16 2022-07-12 Suk Tae GONG Apparatus and method for continuously producing reinforced plastic pipe using transfer film
US10844928B1 (en) * 2017-11-22 2020-11-24 Caraustar Industrial and Consumer Products Group, Inc. Methods for making driveshaft dampers
US11781617B1 (en) * 2017-11-22 2023-10-10 Caraustar Industrial and Consumer Products Group, Inc. Driveshaft-damper tuning
US11913516B1 (en) 2017-11-22 2024-02-27 Caraustar Industrial and Consumer Products Group, Inc. Driveshaft damper
US11920653B1 (en) 2017-11-22 2024-03-05 Caraustar Industrial and Consumer Products Group, Inc. Driveshaft damper
US12372135B1 (en) 2017-11-22 2025-07-29 Caraustar Industrial and Consumer Products Group, Inc. Driveshaft damper

Also Published As

Publication number Publication date
AT293839B (de) 1971-10-25
NL6908426A (enrdf_load_html_response) 1969-12-05
GB1246056A (en) 1971-09-15
DE1928201A1 (de) 1969-12-04
DE1928201C3 (enrdf_load_html_response) 1975-02-06
CH502138A (fr) 1971-01-31
FR2010065A1 (enrdf_load_html_response) 1970-02-13
NO135572B (enrdf_load_html_response) 1977-01-17
DK127744B (da) 1973-12-31
JPS528353B1 (enrdf_load_html_response) 1977-03-08
NO135572C (enrdf_load_html_response) 1977-04-27
NL158118B (nl) 1978-10-16
BE733952A (enrdf_load_html_response) 1969-12-02
DE1928201B2 (de) 1974-06-20
LU58764A1 (enrdf_load_html_response) 1970-01-14
SE353486B (enrdf_load_html_response) 1973-02-05

Similar Documents

Publication Publication Date Title
US3548724A (en) Apparatus and method for forming indefinite length tubular articles
US3155559A (en) Method and apparatus for forming and continulusly advancing a helically wound mandrel surface
FI85230B (fi) Roteringsmaskin foer spiralformigt utgjort roer.
US3706624A (en) Apparatus for making plastic hose
US4012272A (en) Apparatus for making reinforced flexible hose
US4479835A (en) Apparatus and method for forming wire reinforced helically fabricated tubing
US3748203A (en) Method and apparatus for positioning a plurality of continuous stripson a support surface
US3325327A (en) Method and apparatus for making a hose of helically wrapped reinforcing and web components
US3173822A (en) Apparatus for continuously forming thermoplastic flexible tubing
JPH01156041A (ja) 製管機
US2343747A (en) Machine for making tubular structures
US3914151A (en) Mandrel for the production of reinforced plastic tubing
US3698988A (en) Equipment for making reinforced tubing
US4085902A (en) Straight hole formation with moving guide path
US3089535A (en) Apparatus for making a wire reinforced flexible hose
GB1222748A (en) Winding apparatus for helical winding of a strip forming the revolving surface of a winding mandrel at a pitch corresponding to the strip width
US3327039A (en) Method of fabricating spiral hose
US2893296A (en) Apparatus for winding tubes
US4603799A (en) Forward feed assembly for continuous forward feed of open tubular fabric under controlled tension
US3861984A (en) Mandrel for the production of reinforced plastic tubing
US4213811A (en) Continuously advancing mandrel
US3192088A (en) Method and apparatus for continuously forming reinforced flexible hose
US3327596A (en) Method and apparatus for rotating and axially advancing tubular stock or the like
JP2001270004A (ja) 繊維強化樹脂管の製造方法並びに製造装置
US2693779A (en) Machine for making round flexible metal tubes

Legal Events

Date Code Title Description
AS Assignment

Owner name: AUTOMATION INDUSTRIES, INC., 19 OLD KINGS HIGHWAY,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PCC TECHNICAL INDUSTRIES, INC.;REEL/FRAME:004538/0663

Effective date: 19860418