GB1238209A - - Google Patents

Info

Publication number
GB1238209A
GB1238209A GB4857668A GB1238209DA GB1238209A GB 1238209 A GB1238209 A GB 1238209A GB 4857668 A GB4857668 A GB 4857668A GB 1238209D A GB1238209D A GB 1238209DA GB 1238209 A GB1238209 A GB 1238209A
Authority
GB
United Kingdom
Prior art keywords
film
width
actuator
pressure
sensor
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
GB4857668A
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 filed Critical
Priority claimed from GB4857668A external-priority patent/GB1240697A/en
Publication of GB1238209A publication Critical patent/GB1238209A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • G01B13/02—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness
    • G01B13/04—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92076—Position, e.g. linear or angular
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92133—Width or height
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92428—Calibration, after-treatment, or cooling zone
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92628—Width or height
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92923—Calibration, after-treatment or cooling zone
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Advancing Webs (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)

Abstract

1,238,209. Film width monitoring device. BELOIT CORP. 14 Oct., 1968, No. 48576/68. Heading B5B. [Also in Division G1] The width of a moving tubular film 13 may be controlled by pneumatic sensing heads 14, 16 which have air jets 24, 22 directed towards tapered sensors 23, 25 mounted on U springs 31, 37. Parts of the springs cover and act as valves over the ends of passages 33, 40 connected through valves 34, 41 to a static pressure air supply. If the film changes its width during manufacture then the position of its edges 13a, 13b relative to the orifices and sensors determines the quantity of air which is interrupted by the edges or impinges on what side of the tapered sensors. If, for example, the film increases in width by moving its edge 13a in the direction of the arrow 36, then less air from the orifice 22 will impinge on one side of the sensor 23 and the force of the sensor on the end of the passage 33 will decrease in pressure. This decrease in pressure in the passage 33 is used by an actuator 11, see also Fig. 4 (not shown), to move the sensor 23 in a direction opposite to that of the arrow 36, until the tapered point is over the edge 13a again. The actuator 11, however, is rigidly but adjustably connected by a rod 19 to a similar actuator 10 mounting the sensor 25, so both actuators move in the direction of arrow 29, that is in a direction opposite to the increased width of the film. The actuator 10, however, is connected to a vacuum and differential pressure valve 45, itself connected to a static pressure passage 40 and to a device for correcting the film width, so that as the actuator 10 is moved by the actuator 11 the sensor 25 is moved relative to its jet 24 and operates to vary the pressure in passage 40. This variation in pressure in 40 is transmitted to the valve 45 which signals the film width correcting device accordingly. Should the width of the film vary by movement of the edge 13b then actuator 10 will move directly, but should the film move laterally without varying its width then the device will merely recentralize as a whole over the film.
GB4857668A 1967-03-08 1968-10-14 Expired GB1238209A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US62156067A 1967-03-08 1967-03-08
GB4857668A GB1240697A (en) 1967-11-02 1968-10-14 Improvements in and relating to photographic films
FR57000608 1968-10-22

Publications (1)

Publication Number Publication Date
GB1238209A true GB1238209A (en) 1971-07-07

Family

ID=27253616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4857668A Expired GB1238209A (en) 1967-03-08 1968-10-14

Country Status (3)

Country Link
BE (1) BE722321A (en)
FR (1) FR1596647A (en)
GB (1) GB1238209A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322357A1 (en) * 1975-08-27 1977-03-25 Union Carbide Corp METHOD AND DEVICE FOR CONTROLLING THE WIDTH OF A BAND OF MOVING MATERIAL
DE2919472A1 (en) * 1979-05-15 1980-11-20 Erhardt & Leimer Kg WIDTH AND GUIDE CONTROL IN TUBE FILM PRODUCTION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423751A1 (en) * 1978-04-21 1979-11-16 Charbonnages Ste Chimique Appts. for monitoring width of flat extruded sheet or tubing - using linked sensors oscillating across the paths of the sheet borders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322357A1 (en) * 1975-08-27 1977-03-25 Union Carbide Corp METHOD AND DEVICE FOR CONTROLLING THE WIDTH OF A BAND OF MOVING MATERIAL
DE2919472A1 (en) * 1979-05-15 1980-11-20 Erhardt & Leimer Kg WIDTH AND GUIDE CONTROL IN TUBE FILM PRODUCTION

Also Published As

Publication number Publication date
FR1596647A (en) 1970-06-22
BE722321A (en) 1969-03-14

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee