GB2032390A – Compression moulding
– Google Patents
GB2032390A – Compression moulding
– Google Patents
Compression moulding
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Info
Publication number
GB2032390A
GB2032390A
GB7842306A
GB7842306A
GB2032390A
GB 2032390 A
GB2032390 A
GB 2032390A
GB 7842306 A
GB7842306 A
GB 7842306A
GB 7842306 A
GB7842306 A
GB 7842306A
GB 2032390 A
GB2032390 A
GB 2032390A
Authority
GB
United Kingdom
Prior art keywords
tube
moulding
insert
volume
sleeve
Prior art date
1978-10-16
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.)
Withdrawn
Application number
GB7842306A
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.)
British Industrial Plastics Ltd
Original Assignee
British Industrial Plastics 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.)
1978-10-16
Filing date
1978-10-27
Publication date
1980-05-08
1978-10-27
Application filed by British Industrial Plastics Ltd
filed
Critical
British Industrial Plastics Ltd
1980-05-08
Publication of GB2032390A
publication
Critical
patent/GB2032390A/en
Status
Withdrawn
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
D—TEXTILES; PAPER
D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
D21G9/00—Other accessories for paper-making machines
D21G9/0063—Devices for threading a web tail through a paper-making machine
B—PERFORMING OPERATIONS; TRANSPORTING
B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
B65H23/00—Registering, tensioning, smoothing or guiding webs
B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B1/00—Film strip handling
G03B1/56—Threading; Loop forming
B—PERFORMING OPERATIONS; TRANSPORTING
B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
B65H2301/00—Handling processes for sheets or webs
B65H2301/50—Auxiliary process performed during handling process
B65H2301/52—Auxiliary process performed during handling process for starting
B65H2301/522—Threading web into machine
Description
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GB 2 032 390 A 1
SPECIFICATION
Improvements in and Relating to Compression Moulding
Technical Field of the Invention
This invention relates to apparatus for feeding a prechosen charge of a moulding composition to a compression moulding press for subsequent moulding into a shaped article.
The Prior Art
It has been common practice for many years to feed compression moulding presses substantially automatically, by means of apparatus which (a) meters out prechosen charges of moulding composition and (b) transfers the metered charges to the individual cavities (“impressions”) in a moulding tool. One example of such apparatus is described in the Specification of U.K. patent No. 736551. The apparatus described incorporates means for slightly adjusting the charge fed to individual impressions of a press, but does not provide for any overall adjustment of charge. Accordingly, a modified apparatus is frequently used, in which the metered charges are adjustable overall, but not individually. This apparatus consists of a pair of spaced-apart plates having a plurality of apertures therein to correspond to the number of impressions in the moulding tool. Each aperture of one plate communicates with the corresponding aperture of the other plate through a tube which is in two parts disposed in telescopic relationship, so that the volume of the tube can be adjusted by varying the spacing between the two plates. This provides an overall adjustment, but does not provide for any individual adjustment. It is an object of the invention to overcome this disadvantage.
Brief Description of the Invention
According to the present invention apparatus for feeding charges of moulding composition to a compression moulding press includes a pair of spaced-apart plates each having a plurality of apertures therein to correspond to the number of impressions in the moulding tool, each aperture of one plate communicating with the corresponding aperture of the other plate through a tube which is in two telescopically disposed parts, whereby varying the spacing between the plates varies the volume of the tube, together with an insert member for said tube engageable with one tube part and movable relative to the other tube part so as to define an adjustable blind volume. “Blind volume” means a volume within the tube which is not accessible to the moulding composition. Because the blind volume is adjustable it effectively provides a means of adjusting the volume of an individual tube and hence of the charge of moulding composition which is metered out by the tube.
The insert member is preferably in the form of a tubular sleeve, the blind volume being defined between the insert and at least one of the tube parts. A particularly preferred form of insert is an externally screw threaded sleeve engageable in a complementary screw threaded portion of that one of the tube parts which has the smaller diameter, i.e. that tube part which slides inside the other tube part. The blind volume is then conveniently defined between an annular external flange on the insert and the end of the tube part inside which the insert is engaged.
Description of a Preferred Embodiment
In order that the invention be better understood it will be described in more detail by way of example with reference to the accompanying drawing, in which the sole figure is a partly cross-sectional side view through part of an apparatus for feeding moulding composition to a compression moulding press. For convenience, only a single unit is shown and described, although it will be appreciated that there will normally be several such units, one for each impression of the moulding tool and the associated shutter plate being common to all of the units.
In the figure, a pair of generally square plates
1, 2 are spaced apart by bolts 3 and associated nuts, 4. Four such bolts are provided, although only two appear in the figure. The plates have aligned apertures 5, 6 in them and mounted in these apertures are tubes 7, and 8 respectively, which overlap in telescoped relationship, so that adjusting the spacing between the plates 1 and 2, by appropriate adjustment of the nuts 4, varies the volume defined within the overlapped tube parts between the two plates. The smaller diameter tube, 8, is internally screw-threaded over part of its length from its free end 9 towards the captive end 10 which is received in the plate
2. A tubular insert 11, having a complementary screw threaded portion 12 extending from an annular external flange 13 is screwed into the smaller diameter tube part. The external diameter of the flange is a sliding fit in the other, larger diameter tube part 7, so that there is an annular gap between the free end 9 and the facing surface 14 of the flange. This width of this gap in a radial direction is fixed, but its depth axially of the tube is a variable quantity which depends on the extent to which the insert is screwed into the tube part 7. The volume of the gap is a blind volume, since it is not accessible to moulding composition supplied to the tube. To facilitate adjustment of the blind volume, the insert is provided with an axially-extending slot 15 so that a simple hand tool having a radially directed spigot can be used to turn the insert, to vary the blind volume as desired. To prevent inadvertent rotation, for example whilst in use, the insert is preferably a tight, interference fit in the associated tube part. This may be accomplished by simply deforming a part of the insert, or by the use of proprietary chemical locking agents. The end of the insert remote from the flange is provided with an internal chamfer 16. The unit is slidably supported on a shutter plate 17, which in the position shown prevents a charge of moulding composition falling
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GB 2 032 390 A
through the tubes. In use, the apparatus is loaded with moulding composition through the plate 2, the chamfer 16 facilitating the entry and subsequent discharge through the piate 1 of 5 the material through the shutter plate into one impression of a moulding tool. One such unit is provided for each impression of the associtaed moulding tool, the apparatus and method overall being similar to that described in 10 the aforesaid Specification No. 736551. Firstly, the insert is set to an intermediate position and then the separation between the two plates is , adjusted to provide the correct “shot” weight for the product to be moulded. In theory, of course, 15 this adjustment once made is perfectly satisfactory, because each impression of a given tool is intended to be identical. However, in practice small variations are often appear, apparent either as moulding flaws due to 20 insufficient material being fed to a particular impression, or a “flash” caused by excessive material. Once the relevant impression has been identified by a trial moulding operation, it is a simple matter to increase or reduce the volume of 25 the tube by varying the blind volume. This can be done for as many of the tubes as is appropriate, without altering the volume of all of the tubes.
Claims (4)
Claims
1. Apparatus for feeding charges of moulding 30 composition to a compression moulding press including a pair of spaced-apart plates each having a plurality of apertures therein to correspond to the number of impressions in the moulding tool, each aperture of one plate 35 communicating with the the corresponding aperture of the other plate through a tube which is in two telescopically disposed parts, whereby varying the spacing between the plates varies the volume of the tube, together with an insert 40 member for said tube engageable with one tube part and movable relative to the other tube part so as to define an adjustable blind volume (as hereinbefore defined).
2. Apparatus according to claim 1 wherein the 45 insert member is in the form of a tubular sleeve,
said blind volume being defined between the sleeve and at least one of the tube parts.
3. Apparatus according to claim 2 wherein the insert member is an externally screw threaded
50 sleeve having an externally screw threaded sleeve having an annular flange at one end and engageable in a complementary screw threaded portion of that one of the tube parts which has the smaller diameter so that said blind volume if 55 defined between said flange and one end of the tube part inside which the insert is engaged.
4. Apparatus for feeding charges of moulding composition to a compression moulding press substantially as described with reference to and
60 as illustrated by the accompanying drawing.
Printed for Her Majesty’s Stationery Office by the Courier Press, Leamington Spa, 1980. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1 AY, from which copies may be obtained.
GB7842306A
1978-10-16
1978-10-27
Compression moulding
Withdrawn
GB2032390A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US05/951,560
US4186860A
(en)
1978-10-16
1978-10-16
Web threading system
Publications (1)
Publication Number
Publication Date
GB2032390A
true
GB2032390A
(en)
1980-05-08
Family
ID=25491828
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7842306A
Withdrawn
GB2032390A
(en)
1978-10-16
1978-10-27
Compression moulding
Country Status (10)
Country
Link
US
(1)
US4186860A
(en)
JP
(1)
JPS5556943A
(en)
CA
(1)
CA1101899A
(en)
DE
(1)
DE2938022C2
(en)
FI
(1)
FI64824C
(en)
FR
(1)
FR2439152A1
(en)
GB
(1)
GB2032390A
(en)
IT
(1)
IT1123859B
(en)
NO
(1)
NO150569C
(en)
SE
(1)
SE7908503L
(en)
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Crown Zellerbach Corporation
Turning bar for moving web
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1984-06-12
Crown Zellerbach Corporation
System for serially conveying discrete flexible articles
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Hoechst Ag
PULL-THROUGH ARRANGEMENT FOR FILMS
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1986-01-09
1987-07-16
Achenbach Buschhuetten Gmbh
CONVEYOR DEVICE FOR IMPORTING TAPE MATERIAL IN TAPE MACHINING MACHINES
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1988-02-23
Cryderman Gary G
Apparatus for entraining and directing a wet paper web
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1987-04-01
Molins Plc
Cigarette paper feed
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Method and apparatus in connection with the drawing of a paper web
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Baker Burle E
Adjustable reel threader for partially finished logs of differing diameters
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1989-12-29
1992-05-07
Oce Graphics France
DEVICE FOR SECONDARY GUIDANCE OF A PRINTING MEDIUM ON A DRAWING MACHINE.
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1990-02-02
1996-08-07
株式会社原織機製作所
Method and apparatus for feeding wrap fleece in lap forming machine
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W. R. Grace & Co.-Conn.
Trailing sheet assembly for an air turn
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Lau; Jark C.
Apparatus for stabilizing a moving low-strength sheet
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1995-09-13
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Valmet Karlstad Ab
Method and apparatus for transferring a fast-running ready-dried fiber web, in particular a tissue web, from a device and along a predetermined path to a subsequent device
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1996-07-23
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Thermo Wisconsin, Inc.
Airfoil web stabilization and turning apparatus and method
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1997-11-04
2001-11-15
Metso Paper Inc
Calender threading arrangement
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1997-12-11
1999-10-26
Thermo Wisconsin, Inc.
Active web stabilization apparatus
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1997-12-15
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Metso Paper Inc
Method for tip drawing and device for finishing process in a paper or paperboard machine or in a machine for finishing paper or paperboard
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Interlake Material Handling, Inc.
Rack with special mounting arrangement
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2007-07-24
Paprima Industries Inc.
Directional tail transfer threading apparatus
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*
1999-08-13
2001-08-07
Voith Sulzer Papertechnik Patent Gmbh
Web handling apparatus
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2000-05-16
2002-11-19
Kimberly-Clark Worldwide, Inc.
Orbital motion device for seaming garments
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Kimberly-Clark Worldwide, Inc.
Refastenable bonding of garment side panels
US7387148B2
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2001-05-15
2008-06-17
Kimberly-Clark Worldwide, Inc.
Garment side panel conveyor system and method
US6565691B2
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2000-05-16
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Kimberly-Clark Worldwide, Inc.
Method and apparatus for forming a lap seam
US6513221B2
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2000-05-16
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Kimberly-Clark Worldwide, Inc.
Garment side panel conveyor system and method
US6846374B2
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*
2000-05-16
2005-01-25
Kimberly-Clark Worldwide
Method and apparatus for making prefastened and refastenable pant with desired waist and hip fit
US6562167B2
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2000-05-16
2003-05-13
Kimberly-Clark Worldwide, Inc.
Methods for making garments with fastening components
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Kimberly-Clark Worldwide, Inc.
Folding and manufacture of pants
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Kimberly-Clark Worldwide, Inc.
Presentation and bonding of garment side panels
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Kimberly-Clark Worldwide, Inc.
Presentation of fastening components for making prefastened and refastenable pants
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2004-06-03
Voith Paper Patent Gmbh
Guide for moist moving paper web has aerodynamic profile with leading edge and trailing edge either side of a thick zone
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2007-05-31
Metso Paper Inc
Suppressor belt conveyor for inserting a conveyor belt into a forming machine
ITFI20060205A1
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*
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2008-02-12
Perini Fabio Spa
DEVICE AND METHOD FOR FEEDING SAILS OF TWO-TONE MATERIAL
US8177940B2
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*
2009-03-04
2012-05-15
Andritz Inc.
Apparatus and method for stabilizing a moving web having transitions in a surface adjacent the web
FI122900B
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*
2010-06-15
2012-08-31
Metso Paper Inc
A conveyor for transporting the threading tape in a fiber web machine
US9216595B1
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2014-12-15
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Eastman Kodak Company
Apparatus for reducing wrinkles in moving web
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2014-12-15
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Apparatus for reducing wrinkles in moving web
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Eastman Kodak Company
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Eastman Kodak Company
Method for reducing wrinkles in moving web
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Web threading system
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Crown Zellerbach Corporation
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LEADING SYSTEM FOR FIBER BANNES
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*
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1979-01-30
Crown Zellerbach Corporation
Web threading system
1978
1978-10-16
US
US05/951,560
patent/US4186860A/en
not_active
Expired – Lifetime
1978-10-27
GB
GB7842306A
patent/GB2032390A/en
not_active
Withdrawn
1979
1979-09-20
DE
DE2938022A
patent/DE2938022C2/en
not_active
Expired
1979-09-21
JP
JP12090079A
patent/JPS5556943A/en
active
Granted
1979-10-02
CA
CA336,827A
patent/CA1101899A/en
not_active
Expired
1979-10-05
FR
FR7924803A
patent/FR2439152A1/en
active
Granted
1979-10-15
FI
FI793202A
patent/FI64824C/en
not_active
IP Right Cessation
1979-10-15
SE
SE7908503A
patent/SE7908503L/en
unknown
1979-10-15
NO
NO793307A
patent/NO150569C/en
unknown
1979-10-16
IT
IT26519/79A
patent/IT1123859B/en
active
Also Published As
Publication number
Publication date
FI793202A
(en)
1980-04-17
DE2938022A1
(en)
1980-04-30
FI64824B
(en)
1983-09-30
US4186860A
(en)
1980-02-05
NO150569C
(en)
1984-11-07
DE2938022C2
(en)
1984-09-27
IT7926519D0
(en)
1979-10-16
NO793307L
(en)
1980-04-17
SE7908503L
(en)
1980-04-17
FI64824C
(en)
1984-01-10
CA1101899A
(en)
1981-05-26
JPS5725464B2
(en)
1982-05-29
FR2439152B1
(en)
1983-12-09
FR2439152A1
(en)
1980-05-16
JPS5556943A
(en)
1980-04-26
NO150569B
(en)
1984-07-30
IT1123859B
(en)
1986-04-30
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Legal Events
Date
Code
Title
Description
1983-08-24
WAP
Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)
