US3715901A - Apparatus for tapering flexible tubes - Google Patents

Apparatus for tapering flexible tubes Download PDF

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Publication number
US3715901A
US3715901A US00015735A US3715901DA US3715901A US 3715901 A US3715901 A US 3715901A US 00015735 A US00015735 A US 00015735A US 3715901D A US3715901D A US 3715901DA US 3715901 A US3715901 A US 3715901A
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US
United States
Prior art keywords
flexible tube
support member
wall
matrix
tube
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
US00015735A
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English (en)
Inventor
R Couland
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Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US3715901A publication Critical patent/US3715901A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/36—Making hollow objects characterised by the use of the objects collapsible or like thin-walled tubes, e.g. for toothpaste

Definitions

  • Flexible metal tubes are well known for use in packaging as containers for toothpaste, foodstuffs and a wide variety of other materials. Such tubes are generally delivered for filling in the form of a cylindrical container which is open at the end opposite of the removable cap.
  • tubes of the type described present transportation and storage problems in that, because of their flexible nature, they are easily deformed or crushed.
  • One solution to these transportation and storage problems is to form the tubes so that the sidewalls have a cross section which is generally conical whereby the individual tubes can be stacked one inside another.
  • FIGURE is a schematic view in cross section of an apparatus embodying the features of the present invention.
  • the concepts of the present invention reside in apparatus for tapering cylindrical tubes formed of a flexible material in which the cylindrical tube is placed inside of a matrix, the interior of which has a generally conical cross section, and thereafter, a fluid is forced into the tube whereby the fluid exerts a pressure on the wall of the flexible tube causing the wall to expand outwardly so that the tube acquires the generally conical cross section of the matrix.
  • one of the features of the present invention resides in a moveable sleeve member having at least one inclined wall which is continuously engaged with the open end of the tube to continuously provide a tight seal at the base of the tube in order to provent leakage of the fluid pressure contained within the tube as the width of the open end is increased and the height decreased.
  • FIG. 1 a schematic view of the device of the present invention.
  • the portion of the drawing to the left of line A-B represents the apparatus prior to actuation, and the portion to the right of line A-B illustrates the apparatus after a flexible tube has been tapered.
  • a flexible tube defined by flexible sidewall 1 having a generally cylindrical cross sec tion, and having a cap 1" releasably engaged with one end of the tube.
  • the cap 1'' is threadably engaged with the top of the tube, although it will be understood by those skilled in the art that other types of removable caps may be employed in lieu of that specifically described in this figure.
  • Flexible tube 1 is mounted on a support member 2 having a substantially cylindrical cross section which: is adapted to substantially fill the interior of tube 1.
  • Support member 2 is provided with a system of opening therethrough which communicate with the end and periphery of the support member which are adapted to transmit a fluid through the support member.
  • the openings include a central opening 3' extending through nipple 4 by means of a tube 5.
  • the tube I mounted on support member 2 is adapted to be positioned in a first housing member in the form of a conical matrix 11 having a plurality of openings 12 through the walls thereof which communicate with the space 13 defined by the interior wall of the matrix 11 and the exterior wall of tube 1.
  • One end of the matrix housing is removably engaged, such as by threadable engagement, with a second housing member 6 defining a central cavity 14.
  • a second housing member 6 defining a central cavity 14.
  • annular sleeve member 7 Positioned within central cavity 14 is an annular sleeve member 7 which is moveable within central cavity 14 relative to housing member 6.
  • sealing means 8 on sleeve member 7. As shown in the figure, sleeve member 7 is displaced relative to housing member 6 in response to a fluid pressure from a fluid fed to central cavity by means of an opening 9 communicating therewith.
  • annular sleeve member 7 circumscribes tube 5 which connects the central opening 3' of support member 2 whereby the tube extends through the axial opening of the annular sleeve member 7 and the sleeve member is moveable between tube 5 and housing 6.
  • the end 10 of sleeve member 7 facing support member 2 is tapered so as to have the configuration of an annular truncated cone, the central opening of which is adapted to receive a cylindrical project 15 on the end of support member 2 opposite the cap 1" of tube '1.
  • the cylindrical projection 15 on support member 2 has an axial length sufficient to permit the truncated cone end 10 of sleeve member 7 to be displaced toward the tube and a diameter sufficiently less than that of the support member 2 that the inclined wall of truncated cone end 10 of sleeve member 7 is adapted to continuously engage the base of tube 1 in a sealing engagement therewith as the base of the tube is expanded and the height decreased.
  • a flexible tube such as a flexible tube formed of metal or the like, is mounted on support member 2, and the housing elements 6 and 11 are assembled. Thereafter, a fluid, such as air under pressure, is fed to nipple 4 and to opening 9.
  • the fluid fed to nipple 4 is transmitted through tube into the system of openings 3 and 3' in support member 2 and is further transmitted to the periphery of support member 2 whereby fluid pressure is exerted on the interior of tube sidewall 1 thereby pushing the wall 1 outwardly toward the interior wall of matrix 11. Air which may be trapped in space 13 between matrix 1 1 and tube 1 is permitted to escape through openings 12 as the wall 1 is expanded.
  • the fluid pressure introduced to central cavity 14 by opening 9 causes sleeve member 7 to be displaced toward tube 1 whereby the inclined wall of sleeve member 7 further serves to displace or expand wall 1 of the flexible tube outwardly as well as serves to insure a tight seal at all times between the end of tube 1 and sleeve member 7 to prevent uncontrolled fluid leakage in the system as the length of tube 1 is shortened and the base is increased or widened.
  • the wall of tube 1 is forced outwardly in response to the fluid pressure exerted by the fluid injected through passages 3 and 3' of the support member 2 until the wall 1 of the tube is substantially in surface contact with the wall of matrix 11 whereby the tube has a conical configuration corresponding to that of the interior surface of matrix 11.
  • the sources of fluid pressure are shut off, the matrix is removed, and the tube is ejected from the apparatus, as by the use of a fluid pressure, or otherwise passed on to another work station.
  • Apparatus for tapering cylindrical tubes formed of a flexible material comprising a substantially rigid support member having a substantially cylindrical cross section adapted to be inserted into a cylindrical flexible tube to substantially fill the flexible tube, said support member having passage means therein adapted to transmit a fluid under pressure to the wall of the flexible tube mounted on said support member, a matrix having a substantially conical cross section, said matrix being adapted to receive said support member with a flexible tube mounted thereon, a housing member, said housing member defining a central cavity therein, and a movable sleeve member having the configuration of an annular truncated cone adapted to be engaged in a sealing relationship with the open base of a flexible tube mounted on said support member in response to a fluid under pressure in said central cavity whereby a fluid under pressure supplied to said passage means causes expansion of the wall of the flexible tube while said sleeve member is continuously displaced by a fluid under pressure to a sealing relationship with the open base of the flexible tube to maintain fluid pressure on the wall of the flexible tube during expansion of
  • sleeve member is an annular sleeve member being moveable relative to said housing member in said central cavity.
  • An apparatus as defined in claim 1 which includes sealing means between said sleeve member and the wall of said central cavity.
  • An apparatus as defined in claim 1 which includes a cylindrical projection on said support member, said projection being adapted to be received in said central opening in said sleeve member and having a diameter less than the diameter of said support member to permit said end of said sleeve member to sealingly engage the base of a flexible tube mounted on said support member.
  • An apparatus as defined in claim 1 which includes tube means extending through saidcentral cavity and communicating with said passage means to supply a fluid under pressure to said passage means.
  • An apparatus as defined in claim 1 which includes means to supply a fluid pressure to said central cavity whereby said sleeve member is displaced toward said support member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Tyre Moulding (AREA)
  • Closing Of Containers (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US00015735A 1969-03-18 1970-03-02 Apparatus for tapering flexible tubes Expired - Lifetime US3715901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6907626A FR2046012A5 (da) 1969-03-18 1969-03-18

Publications (1)

Publication Number Publication Date
US3715901A true US3715901A (en) 1973-02-13

Family

ID=9030777

Family Applications (1)

Application Number Title Priority Date Filing Date
US00015735A Expired - Lifetime US3715901A (en) 1969-03-18 1970-03-02 Apparatus for tapering flexible tubes

Country Status (15)

Country Link
US (1) US3715901A (da)
JP (1) JPS4931422B1 (da)
AT (1) AT320394B (da)
BE (1) BE747425A (da)
BR (1) BR7017535D0 (da)
CA (1) CA929423A (da)
CH (1) CH513684A (da)
DK (1) DK130773B (da)
ES (1) ES185987Y (da)
FR (1) FR2046012A5 (da)
GB (1) GB1309695A (da)
NL (1) NL159027B (da)
NO (1) NO130717C (da)
SE (1) SE363249B (da)
SU (1) SU370761A3 (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573841A (en) * 1982-12-22 1986-03-04 N P S P Po Hydroplastichna Obrabotka Na Metalite Method of and apparatus for the finish shaping of profiled cylindrical holes
US20190366415A1 (en) * 2018-05-30 2019-12-05 Hank GORADESKY Mold for forming an inhalation device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811393A (en) * 1973-01-12 1974-05-21 Stolle Corp Manufacture of cans and the like
HU171756B (hu) * 1976-03-30 1978-03-28 Koho Es Gepipari Miniszterium Sposob i oborudovanie dlja izgotovlenija konicheskikh tjubikov
DE2743998C2 (de) * 1977-09-30 1982-10-28 Hinterkopf, Kurt G., 7332 Eislingen Konischer Tubenrohling und Vorrichtung zum konischen Aufweiten eines Tubenrohlings
DE2754666A1 (de) * 1977-12-08 1979-06-13 Hinapat Ag Verfahren und vorrichtung zur herstellung eines tubenrohlings
AT354224B (de) * 1978-05-10 1979-12-27 M E P A G Metall Und Plastik G Verfahren und vorrichtung zum konischen auf- weiten von metalltuben
JPS59501152A (ja) * 1982-02-02 1984-07-05 フイジコ−チエフニチエスキ−　インスチツ−ト　アカデミ−　ナウク　ベロルススコイ　エスエスエル 管成形装置
GB8820585D0 (en) * 1988-08-31 1988-09-28 Metal Box Plc Pneumatic reshaping of cans
US5746080A (en) * 1995-10-02 1998-05-05 Crown Cork & Seal Company, Inc. Systems and methods for making decorative shaped metal cans
US5832766A (en) * 1996-07-15 1998-11-10 Crown Cork & Seal Technologies Corporation Systems and methods for making decorative shaped metal cans
US5829290A (en) * 1996-02-14 1998-11-03 Crown Cork & Seal Technologies Corporation Reshaping of containers
US5938389A (en) * 1996-08-02 1999-08-17 Crown Cork & Seal Technologies Corporation Metal can and method of making

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573841A (en) * 1982-12-22 1986-03-04 N P S P Po Hydroplastichna Obrabotka Na Metalite Method of and apparatus for the finish shaping of profiled cylindrical holes
US20190366415A1 (en) * 2018-05-30 2019-12-05 Hank GORADESKY Mold for forming an inhalation device

Also Published As

Publication number Publication date
NO130717C (da) 1975-01-29
NL7003748A (da) 1970-09-22
BR7017535D0 (pt) 1973-05-10
GB1309695A (en) 1973-03-14
NL159027B (nl) 1979-01-15
AT320394B (de) 1975-02-10
SE363249B (da) 1974-01-14
DE2012701B2 (de) 1971-12-02
DK130773C (da) 1975-09-08
NO130717B (da) 1974-10-21
ES185987Y (es) 1974-07-01
SU370761A3 (da) 1973-02-15
BE747425A (fr) 1970-09-16
CA929423A (en) 1973-07-03
JPS4931422B1 (da) 1974-08-21
CH513684A (fr) 1971-10-15
DE2012701A1 (de) 1970-09-24
DK130773B (da) 1975-04-14
ES185987U (es) 1973-10-16
FR2046012A5 (da) 1971-03-05

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