CA1317805C - Heatable glazing or calendering roll - Google Patents
Heatable glazing or calendering rollInfo
- Publication number
- CA1317805C CA1317805C CA000566504A CA566504A CA1317805C CA 1317805 C CA1317805 C CA 1317805C CA 000566504 A CA000566504 A CA 000566504A CA 566504 A CA566504 A CA 566504A CA 1317805 C CA1317805 C CA 1317805C
- Authority
- CA
- Canada
- Prior art keywords
- roll
- roll body
- central bore
- flange
- heat carrier
- 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 - Fee Related
Links
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- Paper (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A heatable glazing or calendering roll comprises a roll body, peri-pheral bores in the roll body for the passage of a fluid heat carrier, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier in at least one flange journal and cutouts for the distribution of the fluid heat carrier from the supply conduits to the peripheral bores and from the peri-pheral bores to the discharge conduits; the cutouts are disposed in the end faces of the or each flange journal and are bordered on the opposite side by the planar end face of the roll body.
A heatable glazing or calendering roll comprises a roll body, peri-pheral bores in the roll body for the passage of a fluid heat carrier, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier in at least one flange journal and cutouts for the distribution of the fluid heat carrier from the supply conduits to the peripheral bores and from the peri-pheral bores to the discharge conduits; the cutouts are disposed in the end faces of the or each flange journal and are bordered on the opposite side by the planar end face of the roll body.
Description
Hea~able Glazing or Calendering Roll l3~7~a.~
BACKGROUND OF T~E INVENTION
1. Field of the invention The invention relates to a heatable glazing or calendering roll.
BACKGROUND OF T~E INVENTION
1. Field of the invention The invention relates to a heatable glazing or calendering roll.
2. Description of the Prior Art Such a roll is disclosed in German utility models No. 8,436,564 and No. 8,410,839 and European Patent Application 158,220, which is based on said two utility models, and comprises a roll body, peripheral bores in the roll body for the passage of a fluid heat carrier, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier in at least one flange journal, and cutouts or recesses for the distribution of the fluid heat carrier fr~m the supply conduits to the peripheral bores and from the peripheral bores to the discharge conduits.
In the roll according to German utility model No. 8,436,564 from the regions of the end faces bordering the cutouts a group of bores ex-tends which diverge along generatrices of a truncated cone and which each open into one of the peripheral bores; outside said entries the peripheral passages are closed on both sides by closure plugs so that the fluid heat carrier flows against said closure plugs, disturbing the flow, this in turn leading to irregular heat transfers. Moreover, the thermal insulation between the roll body and the flange journals is not satisfactory; as explained for example in German Offenlegungs-schrift 3,518,808 the thermal expansion of the flange journals on the one hand and of the roll body on the other hand must be matched to obtain a specific deformation of the two bearing journals and thereby compensate for example the "oxbow effect".
The same applies also to the roll according to German utility model no. 8,410,839 in which the regions of the end face of the roll body enclosed by the mouths of the peripheral bores are set back with re-spect to the opposite base surface regions of the flange journals to form in each case a gap or a cutout extending up to the mouths of the peripheral bores; central supply and discharge conduits extend in -2- ~3~ 7~
each case up to said cutouts; this is intended to permit the heating of exactly predefined peripheral regions of the roll body.
A further problem in the known heatable glazing or calendering rolls is that the end face of the roli body must be worked to form the cutout of the 5 recess, for example milled out or turned out. The cutouts or recesses thus formed are then in a region of the roll body in which its inherent stresses have a critical value so that any intervention in this region of the roil body increases the danger of fracture.
SUMMARY OF THE INVENTiON
10 The invention is therefore based on the problem of providing a heatable glazing or calendering roll of the type indicated in which the above disadvantages do not occur.
In particular, a roll is to be provided which is very stable so that even after extremely long operation of the roll bodies no cracks or fractures occur.
15 Generally speaking, the problems of the prior art are overcome by the presentinvention which provides a heatable glazing or calendering roll comprising: a cylindrical roll body having a central bore, an outer material contacting cylindrical surface and axially spaced end faces extending from the central bore to the outer cylindrical surface, a plurality of peripheral bores extending20 axially through the cylindrical roll body for the passage of a fluid heat carrier, each of the plurality of peripheral bores opening through the axially spaced end faces of the roll body between the roll body central bore and the outer cylindrical surface, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier including a central bore in at least 25 one flange journal, a cutout in the end face of the at least one flange journal and bounded by an end face of the roll body, the cutout extending from the central bore of the flange radially outward to the end face openings of the plurality of peripheral bores to provide distribution of a fluid heat carrier toeach of the plurality of peripheral bores, and a heat insulating bush in each of30 the plurality of peripheral bores receiving fluid heat carrier from the supply conduit .
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., ~ 3 ~
The advantages achieved with the invention are based on the fact that the cutouts or recesses are not disposed in the end faces of the roll body but in the end faces of the or each flange journal and are bordered on one side by the opposite substantially planar end face of the roll body. This also makes it possible to continue the cu~outs in the radial direction outwardly to such an extent that the peripheral bores open directly into the cutouts, i.e. -the deflection of the flow of the fluid heat carrier takes place only gradually and in particular no flowing against a closure plug is necessary. The uni-form flow of the fluid heat carrier thus achievable through the end regions of the roll body and flange journal leads in turn to a very uniform and defined heating in said region, as is necessary for many purposes.
In addition, due to this spatial configuration of the transfer regions between roll body and flange journals a very good heat insu-lating is possible in this region by lining the inner surface of the cutouts with an insulation material, for example of heat-insulating plastic; this thermal insulation may extend over the en-tire inner suface of the supply and/or discharge conduits in the flange journals and over the surface of the cutout. In the ends of the peripheral bores insulation bushes of heat-insulating material may be inserted and the length thereof may be adapted to the particular operating conditions desired; by choosing such insulating bushes with a speci-fic length it is namely possible to obtain in this region an exactly defined heat transfer between the roll body and the flange journals in order, for example, to compensate the oxbow effect.
Of course, between the engagement surfaces of flange journals on the one hand and roll body on the other a heat insulation is also provided as already known from German Offenlegungsschrift 3,518,808.
This principle can be used both with centre rolls and with drive rolls; in the case of centre rolls both flange journals are available for passage of the fluid heat carrier so that in this design no central bore in the roll body is necessary; as a rule, however, all the roll bodies are made with a central bore so that when used as centre roll the central bore of the roll body can be closed. For this ~31~
purpose at the end face of the roll body on both sides a distribu~or body is mounted, for example screwed on, and prevents the penetra-tion of the fluid heat carrier into the central bore. This distri-butor plate can be provided with flow-conducting blades which serve to deflect the flow from the supply and discharge conduits for the fluid carrier in at least one flange journal to or from the peri-pheral bores; said blades are so arranged that they accelerate the incoming heat carrier in the peripheral direction and retard the out-going heat carrier from its peripheral speed in order to ensure a uniform turbulence-free flow as is known from elder Canadian patent application 519,721.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be explained in detail hereinafter with the aid of examples of embodiment with reference to the attached schematic drawings, wherein:
Fig. 1 is a detail section through the upper part of the left end of a centre roll, and Fig. 2 is a similar view of the heating side of a drive roll.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Fig. 1 shows a centre roll which is denoted generally by the refe-rence numeral 10 and comprises a cylindrical roll body 12 and a flange journal 14 at both sides of each roll body 12, only the left flange journal being shown in the Figure. The flange journal 14 is secured by means of a screw 18 to the end face of the roll body 12;
between the two engaging end faces of flange journal 14 and roll body 12 a heat-insulating layer 20 is disposed as already known from German Offenlegungsschrift 3,518,808.
A web 16 to be treated, for example a paper web, is indicated on the outer cylinder face of the roll body 12.
-5~ 78~
The roll body 12 comprises an axially extending central bore 36 and a plurality of peripheral bores 35 disposed at equal angular intervals below the peripheral surface thereof. For example, eight or sixteen peripheral bores 35 may be provided which extend over the entire axial length of the roll body 12.
The end face of the roll body 12 extends substantially planar and has only a s~all shoulder 13 at the transition from the central region of the end face to the outer engaging face for the flange journal, where the heat-insulating layer 20 is disposed.
The flange journal 14 is likewise provided with a central bore 15 which aligns with the central bore 36 in the roll body 12 but has a somewhat smaller internal diameter; the right end face of the flange journal 14 according to the illustration of Fig. 1 is provided with a recess or cutout which starts substantially at the edge of the central bore 15 and extends radially outwardly; the radially outer edge of the cutout 17 aligns with the radially outer edge of the peripheral bores 35.
The central bore 15 of the flange journal 14, the wall on the flange-journal side of the cutout 17 and the mouth of the peripheral bores 35 are provided with heat-insulating layers, i.e. with a bush 22 of heat-insulating material lining the central bore 15, heat-insulating linings 24 and 26 for the cutout 17 and finally a bush 38 of heat-insulating material inserted into the mouth of the peripheral bore 35. The length of said bush 38 can be adapted to the desired operating conditions and a defined heat transfer can thus be achieved in this region.
Since in a centre roll both flange journals 14 are available for the supply and discharge of the fluid heat carrier, the central bore 36 is not required for conducting said fluid heat carrier. In many cases it may even be expedient to fill the central bore 36 with the fluid heat carrier, generally oil or water; if this is not the case the central bore 36 may be closed by a distributor plate 28 which bears on the central region of the end face of the roller body 12, except of course for the peripheral bores 35, and is held by means of a -6- ~3~8~ ~
screw 32 screwed into ~he opposite end wall of the flange journal 14.
Between the distributor plate 28 and the end face of the roll body 12 a plate 39 of hedt-insulating material is disposed in order to reduce the heat transfer from the roll body 12 to the flange journal 14 here as well. The plate 39 also covers the mouth of the central bore 36.
O-rings 34 seal the gap between the distributor plate 28 and the end face of the roll body 12. Flow-conducting blades 30 are welded onto the distributor plate 28, only one of said blades being shown in Fig.
1. Said blades 30 are arranged in such a manner that they accelerate the incoming heat carrier in the peripheral direction and retard the outgoing heat carrier from its peripheral speed and project radially into the flow passage, i.e. the cutout 17, as disclosed in elder Canadian patent application 519,721.
If it is assumed in the centre roll according to Fig. 1 that the supply of the fluid heat carrier is through the central bore 15 of the flange journal 14 then a flow path for the fluid carrier results from the central bore 15 via the cutout 17, which is bordered on the one side by the planar distributor plate 28 and on the other side by a milled or turned-out portion in the end wall of the flange journal 14, to the peripheral bores 35, the blades 30 performing the flow-guiding function explained. This flow is substantially free of eddies so that defined flow and thus also temperature conditions result.
On the side not illustrated the flow runs outwardly from the bores 35 via the cutout 17 to the bore 15 in the other flange journal 14.
Figure 2 shows the heating side of a drive roll in which a flange journal is required for coupling to the drive means; in this case the central bore 36 must be used for returning the fluid heat carrier.
In such a drive roll a tube 40 is inserted into the central bore 15 of the flange journal 14 and extends coaxially with the wall of the central bore 15 and opens into the central bore 36 of the roll body 12.
7 ~ 7~
~n such an embodiment ~he fluid heat carrier is supplied on the heating side, for example, through the annular gap between the tube 40 and the inner wall of the central bore 15 and is guided via the cutout 17 outwardly to the peripheral bores 35 which are not shown in Fig. 2.
On the opposite drive side the fluid heat carrier is supplied from the peripheral bores 35 via a corresponding cutout 17 in the end face of the flange journal 14 to the central bore 36 of the roll body 12 and flows though said central bore 36 until it is finally fur~her conducted through the tube 40 on the heating side of the drive roll.
A bush 40 of heat-insulating material is inserted into the end of the central bore 36 of the roll body facing the flange journal 14 and reduces in this region the heat transfer from the fluid heat carrier in the central bore 36 to the roll body and thus to the flange journal 14.
In the roll according to German utility model No. 8,436,564 from the regions of the end faces bordering the cutouts a group of bores ex-tends which diverge along generatrices of a truncated cone and which each open into one of the peripheral bores; outside said entries the peripheral passages are closed on both sides by closure plugs so that the fluid heat carrier flows against said closure plugs, disturbing the flow, this in turn leading to irregular heat transfers. Moreover, the thermal insulation between the roll body and the flange journals is not satisfactory; as explained for example in German Offenlegungs-schrift 3,518,808 the thermal expansion of the flange journals on the one hand and of the roll body on the other hand must be matched to obtain a specific deformation of the two bearing journals and thereby compensate for example the "oxbow effect".
The same applies also to the roll according to German utility model no. 8,410,839 in which the regions of the end face of the roll body enclosed by the mouths of the peripheral bores are set back with re-spect to the opposite base surface regions of the flange journals to form in each case a gap or a cutout extending up to the mouths of the peripheral bores; central supply and discharge conduits extend in -2- ~3~ 7~
each case up to said cutouts; this is intended to permit the heating of exactly predefined peripheral regions of the roll body.
A further problem in the known heatable glazing or calendering rolls is that the end face of the roli body must be worked to form the cutout of the 5 recess, for example milled out or turned out. The cutouts or recesses thus formed are then in a region of the roll body in which its inherent stresses have a critical value so that any intervention in this region of the roil body increases the danger of fracture.
SUMMARY OF THE INVENTiON
10 The invention is therefore based on the problem of providing a heatable glazing or calendering roll of the type indicated in which the above disadvantages do not occur.
In particular, a roll is to be provided which is very stable so that even after extremely long operation of the roll bodies no cracks or fractures occur.
15 Generally speaking, the problems of the prior art are overcome by the presentinvention which provides a heatable glazing or calendering roll comprising: a cylindrical roll body having a central bore, an outer material contacting cylindrical surface and axially spaced end faces extending from the central bore to the outer cylindrical surface, a plurality of peripheral bores extending20 axially through the cylindrical roll body for the passage of a fluid heat carrier, each of the plurality of peripheral bores opening through the axially spaced end faces of the roll body between the roll body central bore and the outer cylindrical surface, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier including a central bore in at least 25 one flange journal, a cutout in the end face of the at least one flange journal and bounded by an end face of the roll body, the cutout extending from the central bore of the flange radially outward to the end face openings of the plurality of peripheral bores to provide distribution of a fluid heat carrier toeach of the plurality of peripheral bores, and a heat insulating bush in each of30 the plurality of peripheral bores receiving fluid heat carrier from the supply conduit .
L CM:kb ~ ;~
., ~ 3 ~
The advantages achieved with the invention are based on the fact that the cutouts or recesses are not disposed in the end faces of the roll body but in the end faces of the or each flange journal and are bordered on one side by the opposite substantially planar end face of the roll body. This also makes it possible to continue the cu~outs in the radial direction outwardly to such an extent that the peripheral bores open directly into the cutouts, i.e. -the deflection of the flow of the fluid heat carrier takes place only gradually and in particular no flowing against a closure plug is necessary. The uni-form flow of the fluid heat carrier thus achievable through the end regions of the roll body and flange journal leads in turn to a very uniform and defined heating in said region, as is necessary for many purposes.
In addition, due to this spatial configuration of the transfer regions between roll body and flange journals a very good heat insu-lating is possible in this region by lining the inner surface of the cutouts with an insulation material, for example of heat-insulating plastic; this thermal insulation may extend over the en-tire inner suface of the supply and/or discharge conduits in the flange journals and over the surface of the cutout. In the ends of the peripheral bores insulation bushes of heat-insulating material may be inserted and the length thereof may be adapted to the particular operating conditions desired; by choosing such insulating bushes with a speci-fic length it is namely possible to obtain in this region an exactly defined heat transfer between the roll body and the flange journals in order, for example, to compensate the oxbow effect.
Of course, between the engagement surfaces of flange journals on the one hand and roll body on the other a heat insulation is also provided as already known from German Offenlegungsschrift 3,518,808.
This principle can be used both with centre rolls and with drive rolls; in the case of centre rolls both flange journals are available for passage of the fluid heat carrier so that in this design no central bore in the roll body is necessary; as a rule, however, all the roll bodies are made with a central bore so that when used as centre roll the central bore of the roll body can be closed. For this ~31~
purpose at the end face of the roll body on both sides a distribu~or body is mounted, for example screwed on, and prevents the penetra-tion of the fluid heat carrier into the central bore. This distri-butor plate can be provided with flow-conducting blades which serve to deflect the flow from the supply and discharge conduits for the fluid carrier in at least one flange journal to or from the peri-pheral bores; said blades are so arranged that they accelerate the incoming heat carrier in the peripheral direction and retard the out-going heat carrier from its peripheral speed in order to ensure a uniform turbulence-free flow as is known from elder Canadian patent application 519,721.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be explained in detail hereinafter with the aid of examples of embodiment with reference to the attached schematic drawings, wherein:
Fig. 1 is a detail section through the upper part of the left end of a centre roll, and Fig. 2 is a similar view of the heating side of a drive roll.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Fig. 1 shows a centre roll which is denoted generally by the refe-rence numeral 10 and comprises a cylindrical roll body 12 and a flange journal 14 at both sides of each roll body 12, only the left flange journal being shown in the Figure. The flange journal 14 is secured by means of a screw 18 to the end face of the roll body 12;
between the two engaging end faces of flange journal 14 and roll body 12 a heat-insulating layer 20 is disposed as already known from German Offenlegungsschrift 3,518,808.
A web 16 to be treated, for example a paper web, is indicated on the outer cylinder face of the roll body 12.
-5~ 78~
The roll body 12 comprises an axially extending central bore 36 and a plurality of peripheral bores 35 disposed at equal angular intervals below the peripheral surface thereof. For example, eight or sixteen peripheral bores 35 may be provided which extend over the entire axial length of the roll body 12.
The end face of the roll body 12 extends substantially planar and has only a s~all shoulder 13 at the transition from the central region of the end face to the outer engaging face for the flange journal, where the heat-insulating layer 20 is disposed.
The flange journal 14 is likewise provided with a central bore 15 which aligns with the central bore 36 in the roll body 12 but has a somewhat smaller internal diameter; the right end face of the flange journal 14 according to the illustration of Fig. 1 is provided with a recess or cutout which starts substantially at the edge of the central bore 15 and extends radially outwardly; the radially outer edge of the cutout 17 aligns with the radially outer edge of the peripheral bores 35.
The central bore 15 of the flange journal 14, the wall on the flange-journal side of the cutout 17 and the mouth of the peripheral bores 35 are provided with heat-insulating layers, i.e. with a bush 22 of heat-insulating material lining the central bore 15, heat-insulating linings 24 and 26 for the cutout 17 and finally a bush 38 of heat-insulating material inserted into the mouth of the peripheral bore 35. The length of said bush 38 can be adapted to the desired operating conditions and a defined heat transfer can thus be achieved in this region.
Since in a centre roll both flange journals 14 are available for the supply and discharge of the fluid heat carrier, the central bore 36 is not required for conducting said fluid heat carrier. In many cases it may even be expedient to fill the central bore 36 with the fluid heat carrier, generally oil or water; if this is not the case the central bore 36 may be closed by a distributor plate 28 which bears on the central region of the end face of the roller body 12, except of course for the peripheral bores 35, and is held by means of a -6- ~3~8~ ~
screw 32 screwed into ~he opposite end wall of the flange journal 14.
Between the distributor plate 28 and the end face of the roll body 12 a plate 39 of hedt-insulating material is disposed in order to reduce the heat transfer from the roll body 12 to the flange journal 14 here as well. The plate 39 also covers the mouth of the central bore 36.
O-rings 34 seal the gap between the distributor plate 28 and the end face of the roll body 12. Flow-conducting blades 30 are welded onto the distributor plate 28, only one of said blades being shown in Fig.
1. Said blades 30 are arranged in such a manner that they accelerate the incoming heat carrier in the peripheral direction and retard the outgoing heat carrier from its peripheral speed and project radially into the flow passage, i.e. the cutout 17, as disclosed in elder Canadian patent application 519,721.
If it is assumed in the centre roll according to Fig. 1 that the supply of the fluid heat carrier is through the central bore 15 of the flange journal 14 then a flow path for the fluid carrier results from the central bore 15 via the cutout 17, which is bordered on the one side by the planar distributor plate 28 and on the other side by a milled or turned-out portion in the end wall of the flange journal 14, to the peripheral bores 35, the blades 30 performing the flow-guiding function explained. This flow is substantially free of eddies so that defined flow and thus also temperature conditions result.
On the side not illustrated the flow runs outwardly from the bores 35 via the cutout 17 to the bore 15 in the other flange journal 14.
Figure 2 shows the heating side of a drive roll in which a flange journal is required for coupling to the drive means; in this case the central bore 36 must be used for returning the fluid heat carrier.
In such a drive roll a tube 40 is inserted into the central bore 15 of the flange journal 14 and extends coaxially with the wall of the central bore 15 and opens into the central bore 36 of the roll body 12.
7 ~ 7~
~n such an embodiment ~he fluid heat carrier is supplied on the heating side, for example, through the annular gap between the tube 40 and the inner wall of the central bore 15 and is guided via the cutout 17 outwardly to the peripheral bores 35 which are not shown in Fig. 2.
On the opposite drive side the fluid heat carrier is supplied from the peripheral bores 35 via a corresponding cutout 17 in the end face of the flange journal 14 to the central bore 36 of the roll body 12 and flows though said central bore 36 until it is finally fur~her conducted through the tube 40 on the heating side of the drive roll.
A bush 40 of heat-insulating material is inserted into the end of the central bore 36 of the roll body facing the flange journal 14 and reduces in this region the heat transfer from the fluid heat carrier in the central bore 36 to the roll body and thus to the flange journal 14.
Claims (10)
1. A heatable glazing or calendering roll comprising:
a cylindrical roll body having a central bore, an outer material contacting cylindrical surface and axially spaced end faces extending from said central bore to said outer cylindrical surface, a plurality of peripheral bores extending axially through the cylindrical roll body for the passage of a fluid heat carrier, each of said plurality of peripheral bores opening through said axially spaced end faces of said roll body between said roll body central bore and said outer cylindrical surface, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier including a central bore in at least one flange journal, a cutout in the end face of said at least one flange journal and bounded by an end face of said roll body, said cutout extending from said central bore of said flange radially outward to said end face openings of said plurality of peripheral bores to provide distribution of a fluid heat carrier toeach of said plurality of peripheral bores, and a heat insulating bush in each of said plurality of peripheral bores receiving fluid heat carrier from said supply conduit.
a cylindrical roll body having a central bore, an outer material contacting cylindrical surface and axially spaced end faces extending from said central bore to said outer cylindrical surface, a plurality of peripheral bores extending axially through the cylindrical roll body for the passage of a fluid heat carrier, each of said plurality of peripheral bores opening through said axially spaced end faces of said roll body between said roll body central bore and said outer cylindrical surface, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier including a central bore in at least one flange journal, a cutout in the end face of said at least one flange journal and bounded by an end face of said roll body, said cutout extending from said central bore of said flange radially outward to said end face openings of said plurality of peripheral bores to provide distribution of a fluid heat carrier toeach of said plurality of peripheral bores, and a heat insulating bush in each of said plurality of peripheral bores receiving fluid heat carrier from said supply conduit.
2. A heatable glazing or calendering roll according to claim 1, wherein at least one of the central bore (15) in said at least one flange journal (14) and the wall on the flange journal side of the cutout (17) is provided with a lining (22, 24, 26) of a heat insulating material.
3. A heatable glazing or calendering roll according to claim 1, wherein said roll is a drive roll and said conduits in said at least one flange journal (14) include an inner tube (40) coaxial with said central bore (15) in said flange journal and communicating with said central bore (36) of the roll body (12).
4. A heatable glazing or calendering roll according to claim 3, wherein a bush (41) of heat-insulating material is inserted into the open end of the central bore (36) of the roll body (12) facing said at least one flange journal (14).
5. A heatable glazing or calendering roll according to claim 1, wherein said roll is a centre roll and said central bore (36) in the roll body (12) is closed by means of a distributor plate (28) at each end of said roll body.
6. A heatable glazing or calendering roll according to claim 5, further including an O-ring between each distributor plate (28) and each end face of the roll body (12).
7. A heatable glazing or calendering roll according to claim 5, wherein each distributor plate (28) is secured to a flange journal (14).
8. A heatable glazing or calendering roll according to claim 7, wherein blades are attached to the sides of the distributor plates (28) facing the flange journal (14) to accelerate the incoming fluid heat carrier in the peripheral direction and retard the outgoing fluid heat carrier from its peripheral speed.
9. A heatable glazing or calendering roll according to claim 8, wherein at least two blades (30) are provided to project radially into each cutout (17).
10. A heatable glazing or calendering roll according to claim 5, wherein a plate (39) of heat-insulating material is disposed between each distributor plate (28) and an end face of the roll body (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3716223.3 | 1987-05-14 | ||
| DE19873716223 DE3716223A1 (en) | 1987-04-02 | 1987-05-14 | HEATABLE SMOOTHING OR CALANDER ROLLER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1317805C true CA1317805C (en) | 1993-05-18 |
Family
ID=6327583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000566504A Expired - Fee Related CA1317805C (en) | 1987-05-14 | 1988-05-11 | Heatable glazing or calendering roll |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1317805C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523578A (en) * | 2019-08-23 | 2019-12-03 | 罗玉成 | A kind of plate UV paint painting system |
| CN113832764A (en) * | 2020-06-24 | 2021-12-24 | 维美德技术有限公司 | Thermo roll for a fiber web machine |
-
1988
- 1988-05-11 CA CA000566504A patent/CA1317805C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523578A (en) * | 2019-08-23 | 2019-12-03 | 罗玉成 | A kind of plate UV paint painting system |
| CN113832764A (en) * | 2020-06-24 | 2021-12-24 | 维美德技术有限公司 | Thermo roll for a fiber web machine |
| CN113832764B (en) * | 2020-06-24 | 2023-07-07 | 维美德技术有限公司 | Hot roll for a fiber web machine |
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