GB1572508A – Calender with nip boundary plates
– Google Patents
GB1572508A – Calender with nip boundary plates
– Google Patents
Calender with nip boundary plates
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Publication number
GB1572508A
GB1572508A
GB48642/76A
GB4864276A
GB1572508A
GB 1572508 A
GB1572508 A
GB 1572508A
GB 48642/76 A
GB48642/76 A
GB 48642/76A
GB 4864276 A
GB4864276 A
GB 4864276A
GB 1572508 A
GB1572508 A
GB 1572508A
Authority
GB
United Kingdom
Prior art keywords
roller
calender
plates
nip
boundary
Prior art date
1975-11-20
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
GB48642/76A
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.)
Hoechst AG
Original Assignee
Hoechst 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.)
1975-11-20
Filing date
1976-11-22
Publication date
1980-07-30
1976-11-22
Application filed by Hoechst AG
filed
Critical
Hoechst AG
1980-07-30
Publication of GB1572508A
publication
Critical
patent/GB1572508A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
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Classifications
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
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
Y10S425/235—Calendar
Description
PATENT SPECIFICATION
>C ( 21) Application No 48642/76 ( 22) Filed 22 Nov 1976 > ( 31) Convention Application No 2552034 ( 32) Filed 31 Nov.
m ( 33) Fed Rep of Germany (DE) > ( 44) Complete Specification Published 30 Jul 1980
1 I ( 51) INT CL 3 B 29 D 7/14 ( 52) Index at Acceptance B 5 A 20 T 19 2 U 22 2 U 2 F 39 ( 11) 1 572 508 ( 19) 1975 in, ( 54) CALENDER WITH NIP BOUNDARY PLATES ( 71) We, HOECHST AKTIENGESELLSCHAFT, a body corporate organised according to the laws of the Federal Republic of Germany, of 6230 Frankfurt/Main 80, Postfach 80 03 20, Federal Republic of Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:-
This invention relates to a calender with rollers forming a nip in which the nip between a pair of rollers, one roller of which is obliquely displaceable, is bounded at the side by plates adapted to the geometrical shape of the nip region.
It is known that for the manufacture of sheets in a calender the nip of a pair of rollers is bounded at the side by limiting jaws (plates) in order to prevent the material accumulating in front of the nip (kneaded or plastic material) from running off at the sides (see the article by G Dost concerning “Herstellung kalandrierter PVC-Folien” (the manufacture of calendered PVC-sheets) in the periodical “Der Plastverarbeiter” 1962, book 6, pages 268 to 274, in particular page 269 However, although these plates are so designed that they can be pushed as close as practicable alongside the two rollers forming the nip, a considerable amount of the material accumulated can escape to the outside.
The distance between rollers and plates must be relatively large in order, in the case of a possible adjustment of one or both rollers, for example, in the case of oblique displacement (or so-called crossing) to avoid contact during calendering between roller(s) and plates which might result in damage to the ground roller surface Therefore, as a result of it being necessary to provide a relatively large separation from the rollers for safety reasons, the previously proposed plates do not provide adequate lateral confinement of the accumulating material In addition, the set spacing in the case of the abovementioned oblique adjustment is under certain circumstances made even larger; oblique adjustment is, however, a measure which is frequently necessary during sheet calendering.
Accordingly, it is an object of the invention to create a calender having boundary plates to prevent or reduce lateral overflow of the material accumulating in the nip of a pair of rollers, of which one is obliquely displaceable, which plates can be arranged at a very small distance from the two rollers without the risk of damage to the rollers during calendering, and for which the set narrow distance between rollers and plates is not varied, even on oblique adjustment of a roller.
The invention provides a calender having a pair of rollers forming a nip, wherein one roller of the pair is obliquely displaceable with respect to the other roller, that is to say, it can move from an initial position with a net diagonal movement, the nip is limited at each side by a boundary plate matching the geometrical shape of the nip, and there is provided means for causing corresponding displacement of the boundary plates in response to oblique relative displacement of the said obliquely-displaceable roller with respect to the other roller, and guide means for ensuring that, on being displaced, the boundary plates each follow a path that is concentric with the surface of the other roller of the pair.
In a calender according to the invention an originally narrow-set spacing between the pair of rollers and the nip boundary plates is retained even when one roller of the roller pair is obliquely adjusted Consequently, even in the case of very narrow adjustments of the plates damage to the rollers is precluded because it is not possible for there to be any contact between rollers and plates By means of the small spacing from the rollers 2 1,572,508 2 rendered possible by the displaceable arrangement of the plates in accordance with the invention, lateral escape of the accumulated material is substantially prevented.
The displacement means preferably comprises a control member which is connected to the bearings of the obliquely displaceable roller and, on relative displacement of that roller with respect to the other roller, causes a corresponding displacement of the boundary plates.
The control member may engage the boundary plates by way of a pin-and-slot connection, which preferably comprises a slot formed in each plate and the control member is in the form of a bar which serves as the pin To facilitate introduction of the control bar, each slot is preferably at the end remote from the other roller of the pair.
Instead, the control member may be arranged to act on the boundary plates by way of a cam surface.
Advantageously, a single control member is arranged to displace both boundary plates, although each plate can if desired be provided with its own control member.
The guide means preferably comprises defining a guide path and a corresponding guide element on each boundary plate for guiding the plate along the guide path The means defining a guide path is preferably a support plate adjacent to each boundary plate.
A calender according to the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows part of the apparatus in cross-section; Figure 2 shows in detail and in crosssection the displaceable arrangement of one of the boundary plates on a corresponding supporting plate; and Figure 3 is a perspective view of the apparatus.
Referring to the accompanying drawings, rollers 1, 2, which form a roller nip 3, are the two inlet rollers of an F-calender (not illustrated) As is customary in such calenders, the roller 1 is both horizontally and vertically displaceable (and therefore obliquely displaceable), whilst the roller 2 is vertically displaceable (these possibilities of adjustment are indicated in Figure 1 by the arrows) The side ends of the roller nip 3 are limited by boundary plates 4 The plates 4 are so designed that they can be pushed very close alongside the two rollers 1 and 2 They are displaceably arranged on supporting plates 5, which are advantageously likewise substantially adapted to the geometrical shape of the nip region The plates 4 are joined by way of a control beam 7 to bearing members 10 of the obliquely-displaceable roller 1 by means of supports 8, between which the control beam is clamped In addition, the plates 4 have, at the upper edge of each side that faces the roller 1, a slot 9, in which the control beam 7 is located The beam 7 lies parallel to the roller 1 The slots 9 70 in the plates 4 are advantageously openended, thereby facilitating the introduction of the control beam 7 into the slots 9 The control beam 7 is a metal rod of circular cross-section Instead of providing supports 75 8, the beam may be arranged so that its ends are joined directly to the bearing members of the obliquely adjustable roller 1.
On oblique displacement of the roller 1 with respect to the roller 2, the adjusting 80 force is transmitted by way of the control beam 7 to the two plates 4 The plates 4 are movably attached to a supporting plate 5 each in such a manner that, when the roller 1 is obliquely displaced, they are moved on a 85 circular path which is concentric with the surface of the roller 2 On oblique displacement of the roller 1, the extent of the adjustment is transmitted to the plates 4 by way of the control beam 7 Thus the extent of the 90 displacement of the plates 4 corresponds to the extent of the relative movement of the rollers 1 and 2.
The plates 4 are guided by way of a guide means 6, along a path which is concentric 95 with the surface of the roller 2 During this movement the control beam 7 inevitably changes its position in the slots 9 to some extent As shown in Fig 2, the guide means 6 may consist of a T-shaped guide, attached to 100 the plate 4 by means of screws, and a corresponding groove-slide path in the supporting plate 5 extending concentrically with the surface of the roller 2 The guide means may instead consist of a dovetail or roller guide 105 fitted on the plates, and a corresponding groove-slide path in the supporting plates 5.
The groove-slide path in the supporting plate has to ensure that the plate 4 can move on a line concentric with the surface of the roller 110 2 The arrangement of the groove-slide path shown in the supporting plate 5 in accordance with Fig 2 is not the only arrangement that can be used for this purpose It is also possible to provide two or three groove-slide 115 paths for which the plate 4 has corresponding guides, provided that the previously mentioned condition for the groove-slide path is met.
The two supporting plates 5, and thus also 120 the plates 4, are so mounted that they are longitudinally displaceable in a direction parallel to the axes of rollers 1 and 2 The plates 5 are secured to guide blocks 13, which are slidably mounted on guide beams 11, 12, 125 which are themselves fixed at each end to the roller bearing members 10; the longitudinal adjustment is effected by means of a threaded shaft 14 The two plates 4 with their supporting plates 5 are therefore displace 130 1,572,508 3 1,572,508 able parallel to the axes rollers 1 and 2, and their separation can be varied as desired.
The plates 4 and the supporting plates 5 preferably consist of metal, more especially stainless steel.
Claims (17)
WHAT WE CLAIM IS:
1 A calender having a pair of rollers forming a nip, wherein one roller of the pair is obliquely displaceable with respect to the other roller, the nip is limited at each side by a boundary plate matching the geometrical shape of the nip, and there is provided means for causing corresponding displacement of the boundary plates in response to oblique relative displacement of the said obliquelydisplaceable roller with respect to the other roller, and guide means for ensuring that, on being displaced, the boundary plates each follow a path that is concentric with the surface of the other roller of the pair.
2 A calender as claimed in claim 1, wherein the displacement means comprises a control member which is mounted on the bearings of the obliquely-displaceable roller and, on relative displacement of that roller with respect to the other roller, causes a corresponding displacement of the boundary plates.
3 A calender as claimed in claim 2, wherein the control member engages the boundary plates by way of a pin-and-slot connection.
4 A calender as claimed in claim 3, wherein the connection comprises a slot formed in each plate and the control member is in the form of a bar which serves as the pin.
A calender as claimed in claim 4, wherein each slot is open at the end remote from the said other roller of the pair.
6 A calender as claimed in claim 2, wherein the control member is arranged to act on the boundary plates by way of a cam surface.
7 A calender as claimed in any one of claims 2 to 6, wherein a single control member is arranged to displace both boundary plates.
8 A calender as claimed in any one of claims 2 to 7, wherein the control member is connected directly to the bearings of the said obliquely-adjustable roller.
9 A calender as claimed in any one of claims 2 to 7, wherein the control member is mounted on a support which is directly connected to the bearings of the said obliquelydisplaceable roller.
A calender as claimed in any one of claims 1 to 9, wherein the guide means comprises means defining a guide path and a corresponding guide element on each boundary plate for guiding the plate along the guide path.
11 A calender as claimed in claim 10, wherein each guide element is generally T-shaped in cross-section.
12 A calender as-claimed in claim 10, wherein each guide element comprises a dovetail or one or more rollers.
13 A calender as claimed in any one of claims 10 to 12, wherein each means defining 70 a guide p th defines a plurality of different guide paths, each of which is concentric with the said other roller of the pair.
14 A calender as claimed in any one of claims 10 to 13, wherein the guide means 75 defining a guide path is a support plate adjacent to each boundary plate.
A calender as claimed in any one of claims 1 to 14, wherein the position of one or each of the boundary plates along the lon 80 gitudinal axis of the nip can be varied.
16 A calender with rollers forming a nip, in which the nip between a pair of rollers, one of which is obliquely-displaceable, is bounded at the side by houndary plates 85 adapted to the geometrical shape of the nip, wherein the boundary plates are provided with slots into which engages a control beam, located parallel to the obliquely-displaceable roller, the ends of which beam are joined to 90 the bearings of this roller, and wherein the boundary plates are arranged on supporting plates so as to be displaceable by means of guide means, so that the plates, on oblique adjustment of the roller, are moved along a 95 path which is concentric with the surface of the roller which is not obliquely displaceable.
17 A calender having a pair of rollers forming a nip, substantially as hereinbefore described with reference to, and as shown in, 100 the accompanying drawings.
ABEL & IMRAY, Chartered Patent Agents, Northumberland House, 303-306 High Holborn, 105 London, WC 1 V 7 LH.
Printed for Her Majesty’s Stationery Office, by Croydon Printing Company Limited, Croydon, Surrey, 1980.
Published by The Patent Office, 25 Southampton Buildings, London, WC 2 A l AY, from which copies may be obtained.
1,572,508
GB48642/76A
1975-11-20
1976-11-22
Calender with nip boundary plates
Expired
GB1572508A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2552034A
DE2552034C3
(en)
1975-11-20
1975-11-20
Calender with gap limiting plates
Publications (1)
Publication Number
Publication Date
GB1572508A
true
GB1572508A
(en)
1980-07-30
Family
ID=5962176
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB48642/76A
Expired
GB1572508A
(en)
1975-11-20
1976-11-22
Calender with nip boundary plates
Country Status (10)
Country
Link
US
(1)
US4043731A
(en)
AT
(1)
AT349202B
(en)
BE
(1)
BE848603A
(en)
CH
(1)
CH598000A5
(en)
DE
(1)
DE2552034C3
(en)
ES
(1)
ES453319A1
(en)
FR
(1)
FR2332119A1
(en)
GB
(1)
GB1572508A
(en)
IT
(1)
IT1064400B
(en)
NL
(1)
NL7612671A
(en)
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Priority date
Publication date
Assignee
Title
JPS5313684A
(en)
*
1976-07-23
1978-02-07
Bridgestone Tire Co Ltd
Method and apparatus for molding pneumatic tire
US4256448A
(en)
*
1978-03-09
1981-03-17
Usm Corporation
Roller die
GB8627503D0
(en)
*
1986-11-18
1986-12-17
Apsley Metals Ltd
Laying continuous strip of elastomeric material
DE3719305C1
(en)
*
1987-06-10
1988-10-20
Kleinewefers Gmbh
Protection device for the inlet nip of calenders and other roller machines
FR2639284B1
(en)
*
1988-11-24
1991-03-22
Solvay
CALENDERING DEVICE
US5558885A
(en)
*
1994-10-26
1996-09-24
Casa Herrera, Inc.
Inserts for sheeting head
US6718877B2
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*
2002-04-30
2004-04-13
Delaware Capital Formation, Inc.
Nip safety guard
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2004-08-31
2006-05-16
Frito-Lay North America, Inc.
Sheeting apparatus having non-contacting roller end
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*
2007-03-26
2012-10-03
株式会社井上製作所
Roll mill
US9073247B2
(en)
2012-07-31
2015-07-07
Michelin Recherche Et Technique S.A.
Biasing wedge for use with calendering drives processing elastomeric mixes
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*
2012-11-19
2015-11-17
Valmet Technologies, Inc.
Slitter-winder of a fiber production line
CA2894772C
(en)
*
2013-01-14
2018-05-01
Cabot Corporation
Method and apparatus for processing elastomer composite
AT514196B1
(en)
*
2013-05-17
2014-11-15
Haas Food Equipment Gmbh
Roller arrangement with a movable inlet shield
CN105109172B
(en)
*
2015-08-05
2017-07-18
江苏建发科技有限公司
A kind of adjustable extrusion device of width
CN105034315A
(en)
*
2015-08-05
2015-11-11
江苏建发科技有限公司
Extrusion device
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Priority date
Publication date
Assignee
Title
GB115077A
(en)
*
1917-04-24
1918-04-24
Arthur Haigh
Improvements in Calenders.
GB119622A
(en)
*
1918-04-04
1918-10-10
William John Mellersh-Jackson
Improvements in or relating to Calendering Machines for Treating Rubber.
GB436743A
(en)
*
1934-05-10
1935-10-17
Dunlop Rubber Co
Improvements in or relating to roller mills and the like and guides therefor
US2308972A
(en)
*
1942-03-02
1943-01-19
Firestone Tire & Rubber Co
Guide plate apparatus
US2513541A
(en)
*
1946-02-01
1950-07-04
Ohio Rubber Co
Guide for rubber mills
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(en)
*
1948-10-29
1953-01-20
Armstrong Cork Co
Method and apparatus for intensely working plastic materials
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Anetsberger Bros Inc
Adjustable dough sizing guide mechanism for sheeters
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1968-08-27
1973-06-19
Monsanto Co
Inlet reservoir for continuous polymer casting machine
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1968-12-31
1971-03-16
Adamson United Co
Automatically adjustable end guides for calender rolls
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1973-08-28
Gen Motors Corp
Apparatus to control edges of rolled products
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*
1974-11-28
1976-01-16
MATERIAL GUIDING JAW FOR THE INTERVAL OF THE CYLINDERS OF A ROLLER OR A GRILL
1975
1975-11-20
DE
DE2552034A
patent/DE2552034C3/en
not_active
Expired
1976
1976-11-13
ES
ES453319A
patent/ES453319A1/en
not_active
Expired
1976-11-15
NL
NL7612671A
patent/NL7612671A/en
unknown
1976-11-16
US
US05/742,138
patent/US4043731A/en
not_active
Expired – Lifetime
1976-11-17
CH
CH1447176A
patent/CH598000A5/xx
not_active
IP Right Cessation
1976-11-18
IT
IT29483/76A
patent/IT1064400B/en
active
1976-11-18
AT
AT856676A
patent/AT349202B/en
not_active
IP Right Cessation
1976-11-22
GB
GB48642/76A
patent/GB1572508A/en
not_active
Expired
1976-11-22
BE
BE172571A
patent/BE848603A/en
not_active
IP Right Cessation
1976-11-22
FR
FR7635070A
patent/FR2332119A1/en
active
Granted
Also Published As
Publication number
Publication date
DE2552034A1
(en)
1977-06-08
US4043731A
(en)
1977-08-23
ES453319A1
(en)
1977-11-16
BE848603A
(en)
1977-05-23
DE2552034B2
(en)
1979-02-15
CH598000A5
(en)
1978-04-28
ATA856676A
(en)
1978-08-15
FR2332119A1
(en)
1977-06-17
NL7612671A
(en)
1977-05-24
IT1064400B
(en)
1985-02-18
DE2552034C3
(en)
1979-10-04
AT349202B
(en)
1979-03-26
FR2332119B1
(en)
1980-07-04
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Legal Events
Date
Code
Title
Description
1980-10-15
PS
Patent sealed [section 19, patents act 1949]
1992-07-22
PCNP
Patent ceased through non-payment of renewal fee
