GB1398640A - Calender roll apparatus - Google Patents

Calender roll apparatus

Info

Publication number
GB1398640A
GB1398640A GB3739372A GB3739372A GB1398640A GB 1398640 A GB1398640 A GB 1398640A GB 3739372 A GB3739372 A GB 3739372A GB 3739372 A GB3739372 A GB 3739372A GB 1398640 A GB1398640 A GB 1398640A
Authority
GB
United Kingdom
Prior art keywords
rollers
oscillated
photo
edge
control
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
GB3739372A
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.)
Mannesmann Demag Krauss Maffei GmbH
Original Assignee
Krauss Maffei AG
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 Krauss Maffei AG filed Critical Krauss Maffei AG
Publication of GB1398640A publication Critical patent/GB1398640A/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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • B29C43/245—Adjusting calender parameters, e.g. bank quantity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

1398640 Photo-electric control of rollers KRAUSS-M AFFEI AG 10 Aug 1972 [20 Aug 1971] 37393/72 Heading G1A [Also in Division G3] The thickness of the mass of plastics material 4 being rolled by calender rollers into a thin sheet, is monitored photo-electrically so as to prevent the possibility of the rollers contacting one another. The position of the edge of the bank 4, indicative of the thickness, in a plane at right angles to that containing the roller axes, is measured by repetitively scanning a light beam 5 across the edge, the unblocked radiation being sensed by cells in linear array 6. The source 1 is a laser which in Fig. 1 is itself oscillated angularly. In other arrangements, it is oscillated on a rectilinear path, Fig. 3 (not shown), or a fixed source co-operates with an oscillated mirror, Fig. 2 (not shown) or an oscillated refraction plate, Fig. 4 (not shown). The varying detector output is used for control on the roller gap and alarm purposes, if necessary. Further, photo-electric systems at each edge of the rollers monitor the roller gap, transverse to the roller axes. Theses are used for starting up the system and only allow switching over to the control system of Fig. 1 when a roller gap below a certain level is reached, indicating that a suitable plastics mass has been formed. The measured thickness may be used in retroactive control to the roll drives, adjustment drives, a roll bending device, or a strip cutting device of a preceding set of mixing rollers. Optical and acoustic alarms may be provided.
GB3739372A 1971-08-20 1972-08-10 Calender roll apparatus Expired GB1398640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2141741A DE2141741C3 (en) 1971-08-20 1971-08-20 Device for detecting the thickness of the kneading at the nip of calender rolls

Publications (1)

Publication Number Publication Date
GB1398640A true GB1398640A (en) 1975-06-25

Family

ID=5817278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3739372A Expired GB1398640A (en) 1971-08-20 1972-08-10 Calender roll apparatus

Country Status (12)

Country Link
US (1) US3809907A (en)
JP (1) JPS5436613B2 (en)
AT (1) AT333049B (en)
BE (1) BE787664A (en)
CA (1) CA980892A (en)
CH (1) CH544642A (en)
DD (1) DD101599A5 (en)
DE (1) DE2141741C3 (en)
FR (1) FR2150359B1 (en)
GB (1) GB1398640A (en)
IT (1) IT962144B (en)
NL (1) NL7211237A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912193A (en) * 1973-06-21 1975-10-14 Knox Inc Web position detector apparatus
JPS5228918A (en) * 1975-08-29 1977-03-04 Taisei Corp Process for detecting residual explosive in an explosion work
US4182259A (en) * 1978-10-04 1980-01-08 The Dow Chemical Company Apparatus for measuring coating thickness on an applicator roll
EP0080309A3 (en) * 1981-11-16 1984-02-29 De La Rue Systems Limited Apparatus for analysing sheets
DE3909496C3 (en) * 1989-03-22 1994-07-14 Troester Maschf Paul Extruder-calender combination
GB8919399D0 (en) * 1989-08-25 1989-10-11 Renold Power Transmission Limi Method of and apparatus for measuring small gaps
GB2243573B (en) * 1990-04-27 1993-10-27 Reifenhaeuser Masch Process for producing plastics foil
DE4428812C2 (en) * 1994-04-08 1997-03-13 Reifenhaeuser Masch Plant for rolling an extruded plastic sheet
JP2871565B2 (en) * 1995-12-26 1999-03-17 株式会社神戸製鋼所 Roller head extruder and control method thereof
US6330024B1 (en) 1996-09-05 2001-12-11 The Goodyear Tire & Rubber Company System and method for controlling the size of material banks in calenders, mills, and feed mills
US6159412A (en) * 1996-09-11 2000-12-12 Dupont Canada Inc. Method for manufacture of liquid crystalline polymer films
US6863517B2 (en) * 1999-10-21 2005-03-08 Welex Incorporated Apparatus and method for measuring and of controlling the gap between polymer sheet cooling rolls
US6406285B1 (en) 1999-10-21 2002-06-18 Welex Incorporated Apparatus for measuring and of controlling the gap between polymer sheet cooling rolls
US6644645B2 (en) 2002-01-10 2003-11-11 Gbr Systems Corporation Stack control mechanism
IL159801A0 (en) * 2004-01-11 2004-06-20 Quality By Vision Ltd Optical apparatus for measuring tooling positions within a seaming machine
EP2256371B8 (en) 2008-02-20 2015-04-29 Nejilaw Inc. Double-end threaded body
DE102013101015A1 (en) * 2013-02-01 2014-08-07 TRüTZSCHLER GMBH & CO. KG Fiber slab rolling mill and apparatus for monitoring a sliver rolling mill
CN103245678B (en) * 2013-04-26 2015-12-09 深圳市华星光电技术有限公司 A kind of detection device for foreign matter
CN104827765B (en) * 2015-05-15 2017-12-29 合肥京东方光电科技有限公司 A kind of printing machine and control method
JP6560031B2 (en) * 2015-06-11 2019-08-14 Ｔｏｙｏ Ｔｉｒｅ株式会社 Rubber sheet manufacturing apparatus and manufacturing method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH349799A (en) * 1958-09-24 1960-10-31 Genevoise Instr Physique Control device for the exact positioning of a movable member of a machine with respect to the frame thereof
US3016464A (en) * 1959-06-10 1962-01-09 Daystrom Inc Apparatus for determining the location and thickness of a reflecting object
US3518441A (en) * 1968-01-24 1970-06-30 Neotec Corp Optical gage for measuring the thickness of a continuous web
GB1217642A (en) * 1968-04-08 1970-12-31 Omron Tateisi Electronics Co Improvements in or relating to the photoelectric inspection of sheet materials
US3659950A (en) * 1969-07-14 1972-05-02 Iris Corp Laser apparatus for detecting the size and form of filamentary material by measuring diffracted light
US3600591A (en) * 1970-01-13 1971-08-17 Feldmuehle Ag Apparatus for detecting surface elevations on a moving sheet

Also Published As

Publication number Publication date
CH544642A (en) 1973-11-30
CA980892A (en) 1975-12-30
DD101599A5 (en) 1973-11-12
BE787664A (en) 1972-12-18
DE2141741B2 (en) 1979-08-16
FR2150359B1 (en) 1976-08-13
NL7211237A (en) 1973-02-22
ATA678472A (en) 1976-02-15
DE2141741C3 (en) 1980-04-03
DE2141741A1 (en) 1973-02-22
JPS4830758A (en) 1973-04-23
US3809907A (en) 1974-05-07
IT962144B (en) 1973-12-20
AT333049B (en) 1976-10-25
FR2150359A1 (en) 1973-04-06
JPS5436613B2 (en) 1979-11-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee