GB1221759A - Improvements in or relating to concrete pipe forming machines - Google Patents

Improvements in or relating to concrete pipe forming machines

Info

Publication number
GB1221759A
GB1221759A GB56935/69A GB5693569A GB1221759A GB 1221759 A GB1221759 A GB 1221759A GB 56935/69 A GB56935/69 A GB 56935/69A GB 5693569 A GB5693569 A GB 5693569A GB 1221759 A GB1221759 A GB 1221759A
Authority
GB
United Kingdom
Prior art keywords
concrete
control unit
sensing
head
operated
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
GB56935/69A
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.)
Hydrotile Machinery Co
Original Assignee
Hydrotile Machinery Co
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 Hydrotile Machinery Co filed Critical Hydrotile Machinery Co
Publication of GB1221759A publication Critical patent/GB1221759A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0063—Control arrangements
    • B28B17/0081—Process control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

1,221,759. Moulding pipes. HYDROTILE MACHINERY CO. 20 Nov., 1969 [22 July, 1969], No. 56935/69. Heading B5A. A vertical pipe casting machine in which a rotary packer head 28 is drawn upwardly and axially through a mould 13 whereby concrete fed on to the head by a conveyer 19 is spread radially by vanes 33 and formed into a pipe includes means to control the concrete feed to maintain the level of concrete above the head substantially constant. In Fig. 2 a probe 44 for sensing the concrete level is located in an electrical sensing circuit comprising a control unit 49 and a normally closed limit switch 48. The probe is adjustably attached to a tube 26 attached to the head, and when the concrete contacts the probe the control unit 49 operates to slow or stop the feed conveyer motor 42. The switch 48 is operated to stop the motor when the head reaches the top of the mould. In a modification the conveyer is driven by an hydraulic motor supplied with pressure fluid from a pump via two solenoid operated valves operated by the control unit whereby one or both of the valves are operated depending on the concrete level to stop or slow the conveyer motor. Alternatively instead of a probe the sensing unit comprises an air pressure chamber vented by a valve in response to the concrete level, and an electro-pneumatic transducer signals the control unit in response to the air pressure in the chamber. The sensing unit may comprise an ultra-sonic signal transducer which senses the concrete level with ultra-sonic signals, the control unit being operated by such signals; alternatively the sensing unit comprises a radar unit sensing the concrete level with electromagnetic signals which effect the operation of the control unit.
GB56935/69A 1969-07-22 1969-11-20 Improvements in or relating to concrete pipe forming machines Expired GB1221759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84358869A 1969-07-22 1969-07-22

Publications (1)

Publication Number Publication Date
GB1221759A true GB1221759A (en) 1971-02-10

Family

ID=25290455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56935/69A Expired GB1221759A (en) 1969-07-22 1969-11-20 Improvements in or relating to concrete pipe forming machines

Country Status (3)

Country Link
US (1) US3619872A (en)
DE (1) DE1956151A1 (en)
GB (1) GB1221759A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388347A2 (en) * 1989-03-13 1990-09-19 International Pipe Machinery Corporation Concrete pipe making machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340553A (en) * 1978-12-29 1982-07-20 Hydrotile Machinery Company Machine and method for making concrete product
US4639342A (en) * 1984-06-11 1987-01-27 Hydrotile Machinery Company Combined concrete feed and packerhead lift control
US4690631A (en) * 1986-03-06 1987-09-01 Hydrotile Machinery Company Packerhead with elastic rollers
US6106749A (en) * 1997-01-08 2000-08-22 Adly; Tarek A. Method and machine for making concrete pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388347A2 (en) * 1989-03-13 1990-09-19 International Pipe Machinery Corporation Concrete pipe making machine
EP0388347A3 (en) * 1989-03-13 1990-12-27 Hydrotile Machinery Company Concrete pipe making machine

Also Published As

Publication number Publication date
US3619872A (en) 1971-11-16
DE1956151A1 (en) 1971-06-24

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