GB1269397A - Method and apparatus for perforating helically grooved plastics tubing - Google Patents

Method and apparatus for perforating helically grooved plastics tubing

Info

Publication number
GB1269397A
GB1269397A GB204670A GB204670A GB1269397A GB 1269397 A GB1269397 A GB 1269397A GB 204670 A GB204670 A GB 204670A GB 204670 A GB204670 A GB 204670A GB 1269397 A GB1269397 A GB 1269397A
Authority
GB
United Kingdom
Prior art keywords
blade
disc
rotation
tube
pin
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
Application number
GB204670A
Inventor
Derek Charles Lockington
Gordon Ralph Wolfe Barry
Gerald Garth Wright
Thomas Smith
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.)
BOWATER FLEXPIPE Ltd
Original Assignee
BOWATER FLEXPIPE Ltd
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 BOWATER FLEXPIPE Ltd filed Critical BOWATER FLEXPIPE Ltd
Publication of GB1269397A publication Critical patent/GB1269397A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
    • B26F1/0061—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes whereby the tube moves axially or radially

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

1,269,397. Cutting sheet material. BOWATER FLEXPIPE Ltd. 25 Sept., 1970 [27 June, 1969; 15 Jan., 1970], Nos. 32615/69 and 2046/70. Heading B4B. [Also in Division F2] Helically grooved plastics tubing T is fed through a piercing station comprising a number of circumferentially spaced and radially disposed, with respect to the tubing, piercing pins or blades 21, whereby the pins or blades produce spaced holes due to their reciprocating action. Each pin or blade 21 is mounted in a block 5 radially adjustable for different tube diameters. The block 5 contains a disc 8, beltdriven, having a helical projection 15 for half its periphery and a circumferential projection 24 for its other half, so that during one half rotation of the disc the tube T is axially indexed one pitch length and during the other half-rotation the tube is held stationary. An eccentric pin 16, on the disc 8 and located in a slot 20 in a slide 18, produces corresponding radial movement of the pin or blade 21 to rotation of the disc, the pin or blade entering the tube T during the stationary half-rotation part of the disc rotation. The blade 21 is flat with an inclined curved leading edge 25 and a notch 27 just behind the leading edge so that when the blade is pulled out of the tube T after piercing, the surplus material is removed by the blade.
GB204670A 1969-06-27 1969-06-27 Method and apparatus for perforating helically grooved plastics tubing Expired GB1269397A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3261569 1969-06-27

Publications (1)

Publication Number Publication Date
GB1269397A true GB1269397A (en) 1972-04-06

Family

ID=10341378

Family Applications (1)

Application Number Title Priority Date Filing Date
GB204670A Expired GB1269397A (en) 1969-06-27 1969-06-27 Method and apparatus for perforating helically grooved plastics tubing

Country Status (1)

Country Link
GB (1) GB1269397A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383742A1 (en) * 1977-03-18 1978-10-13 Lupke Gerd Paul Heinrich APPARATUS AND PROCESS FOR PERFORATING TUBES, AND PROCESS FOR MANUFACTURING PART OF THIS APPARATUS
US4180357A (en) * 1977-03-18 1979-12-25 Lupke Gerd Paul Heinrich Apparatus and method for perforating tubing and method of producing part of such apparatus
GB2163999A (en) * 1984-08-15 1986-03-12 Harley Bishop Pictographic display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383742A1 (en) * 1977-03-18 1978-10-13 Lupke Gerd Paul Heinrich APPARATUS AND PROCESS FOR PERFORATING TUBES, AND PROCESS FOR MANUFACTURING PART OF THIS APPARATUS
US4180357A (en) * 1977-03-18 1979-12-25 Lupke Gerd Paul Heinrich Apparatus and method for perforating tubing and method of producing part of such apparatus
GB2163999A (en) * 1984-08-15 1986-03-12 Harley Bishop Pictographic display device

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