EP1378476A2 - Traversing drum - Google Patents
Traversing drum Download PDFInfo
- Publication number
- EP1378476A2 EP1378476A2 EP03014622A EP03014622A EP1378476A2 EP 1378476 A2 EP1378476 A2 EP 1378476A2 EP 03014622 A EP03014622 A EP 03014622A EP 03014622 A EP03014622 A EP 03014622A EP 1378476 A2 EP1378476 A2 EP 1378476A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- traversing drum
- traversing
- cylinder
- inner cylinder
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/46—Package drive drums
- B65H54/48—Grooved drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/10—Materials
- B65H2401/12—Ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the present invention relates to a traversing drum used in an automatic winder or the like to traverse a yarn while rotating a package.
- a traversing drum that is in pressure contact with the package is externally rotatively driven to wind the yarn while rotating the package.
- An endless track like guide groove is formed in a surface of the traversing drum as traversing means for winding the yarn around the package uniformly in an axial direction of the package. A traversing operation is performed by guiding the yarn through this guide groove.
- Such a traversing drum is typically formed integrally of metal such as aluminum or iron.
- a traversing drum is formed by producing a cylinder using a casting process such as a die cast process or a lost wax process, forming the guide groove in the cylinder, and subjecting the cylinder to surface treatment based on machining such as grooving or finishing in order to improve dimensional accuracy.
- the traversing drum is rotated by being externally rotatively driven.
- the reduced mass of the traversing drum serves to reduce loads on a rotative driving source (motor). This makes it possible to reduce power consumption and extend the lifetime of the motor.
- conventional traversing drums formed of the metal such as iron using the die cast or lost wax process have the disadvantages of having a very large mass, consuming high power, and failing to extend the lifetime of the motor. In view of these problems, it is an object of the present invention to solve these problems to provide a traversing drum made of ceramics and thus having a small mass.
- Means in Claim 1 employed by the present invention in order to accomplish the object is a traversing drum which drives a winding package while being in surface contact with the winding package and which has an endless track like guide groove formed in an outer peripheral surface of the traversing drum to traverse a yarn in a lateral direction, the traversing drum being characterized in that a drum main body including the groove is integrally molded using a ceramic burned member.
- a traversing drum can be manufactured which is lighter than conventional ones made of metal. It is thus possible to significantly reduce the power consumption of a rotative driving source for the traversing drum and to extend the lifetime of the rotative driving source.
- Means in Claim 2 employed by the present invention is a traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member.
- a traversing drum is manufactured using a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member, it is rigid and light even if it is thin. It is thus possible to significantly reduce the power consumption of the rotative driving source for the traversing drum and to extend the lifetime of the rotative driving source.
- Means in Claim 3 employed by the present invention is a traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member and which are intermittently connected together using ribs.
- the inner cylinder and the outer cylinder are intermittently connected together using ribs. Accordingly, the rigidity of the traversing drum can be further improved compared to the aspect of the invention in Claim 1.
- Means in Claim 4 employed by the present invention is a traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member, and ribs are used to connected the inner cylinder to a groove bottom of a guide groove formed in a surface of the outer cylinder.
- the operations and effects of this traversing drum are the same as those of the aspect of the invention in Claim 3.
- Means in Claim 5 employed by the present invention is a traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member, and the inner cylinder is installed over a rotating shaft via bearings each having rubber rings installed on its outer peripheral surface.
- the bearing having the rubber ring installed on its outer peripheral surface is disposed between the traversing drum and the rotating shaft. It is thus possible to absorb a difference in thermal expansion based on a difference in material between the rotating shaft (metal) of the rotative driving source and the traversing drum, made of ceramics. This prevents, for example, a failure to transmit a rotative driving force owing to a possible gap between the rotating shaft and the traversing drum.
- Figure 1 shows an automatic winder comprising a traversing drum 1 according to a first embodiment of the present invention.
- the traversing drum 1 installed over a rotating shaft 2 is shown in a vertical sectional view.
- a drum motor 4 is fixed to a frame 3 of the automatic winder as a rotative driving source.
- the rotating shaft 2 of the motor 4 has a different-diameter step portion.
- Two bearings 5A, 5B are externally fitted over the different-diameter step portion.
- the spacing between the bearings 5A, 5B is held by a spacer 6.
- the two bearings 5A, 5B are fixed by screwing a drum nut 7 over the rotating shaft 2.
- a surface of a winding package P is contacted with the traversing drum 1 to drive the winding package P.
- An endless track like guide groove 8 is formed in an outer peripheral surface of the traversing drum 1 to traverse a yarn Y in a lateral direction (the direction along a rotational center line C of the traversing drum 1).
- a drum main body including the groove 8 is integrally molded of a ceramic burned member.
- the drum main body is composed of an outer cylinder 9 having the guide groove 8 formed in its outer peripheral surface and inner cylinders 10A, 10B as a bearing supporting portion.
- the outer cylinder 9 and the inner cylinders 10A, 10B are integrally molded of the ceramic burned member.
- the traversing drum 1 may be manufactured using a lost wax process or the like.
- the traversing drum 1 is manufactured as a product by pouring wax into a die to form a mold material, pouring a ceramic material on the mold material, drying and solidifying the ceramic material, then heating the ceramic material to melt and remove the wax to form a molding base for the traversing drum 1 of a complicated shape, subsequently baking the molding base at a high temperature, and finishing the molding base by subjecting it to surface treatment or the like.
- the remaining wax may be further completely burned before the molding base is baked at a high temperature.
- the traversing drum 1 is thus manufactured so as to have a double cylinder structure including the inner and outer cylinders.
- the inner cylinders 10A, 10B of the traversing drum 1 are externally fitted over two bearings 5A, 5B fixedly installed on the different-diameter step portion of the rotating shaft 2.
- An end surface plate 13 extending in an inner radial direction of the traversing drum 1 is fixed screws 14 or the like to a disk portion of a drum wheel 12 fixed to the tip of the rotating shaft 2 (its left end in Figure 1) via a set screw 11.
- the traversing drum 1 is configured in this manner, then so it is composed of a ceramic burned member and thus has a very small mass. It also serves to reduce loads on a drum motor 4, which thus has significantly reduced power consumption. It is also possible to extend the lifetime of the drum motor 4 itself. Furthermore, the groove bottom of the guide groove 8 in the traversing drum 1 and the inner cylinders 10A, 10B as a bearing supporting portion are integrally connected together. This makes it possible to increase the rigidity of the whole traversing drum 1 including the outer cylinder 9.
- FIG. 2 shows a second embodiment of the present invention.
- an inner cylinder 16 is molded of a single continuous cylinder.
- An outer cylinder 17 is formed integrally with the inner cylinder 16 at one end of it. Further, as in the case with the traversing drum 1 shown in Figure 1, the other end of the outer cylinder 17 is fixed to the disk portion of the drum wheel 12 via screws 14 or the like. Accordingly, the drum as a whole has a high rigidity, so that the groove bottom of the guide groove 8 and the inner cylinder 16 are not integrally connected together.
- the other arrangements, operations, and effects are the same as those of the first embodiment.
- FIG. 3 shows a third embodiment of the present invention.
- a traversing drum 18 according to this embodiment is a combination of the first and second embodiments.
- the inner cylinder 16 is molded of a single continuous cylinder.
- the outer cylinder 17 and the inner cylinder 16 are integrated together at one end of them.
- the groove bottom of the guide groove 8 and the inner cylinder 16 are integrally connected together. Consequently, the traversing drum 18 according to this embodiment has an increased rigidity because the inner cylinder 16 and the outer cylinder 17 are integrally molded at one end of them and because the groove bottom of the guide groove 8 and the inner cylinder 16 are integrally molded. Therefore, the traversing drum 18 as a whole has an excellent rigidity.
- the other arrangements, operations, and effects are the same as those of the first embodiment.
- the traversing drums according to the first to third embodiments are each composed of a ceramic burned member.
- the ceramic burned member has a thermal expansion coefficient different from that of the rotating shaft 2, made of metal.
- the heating of the drum motor 4 makes a difference in thermal expansion between the traversing drum and the rotating shaft 2. This may reduce the coupling intensity between the traversing drum and the rotating shaft 2.
- rubber rings 19 are installed on the outer peripheral surface of the bearings 5A, 5B to support the traversing drum, made of ceramics, via the rubber rings 19. This serves to absorb the difference in thermal expansion caused by the difference in material.
- the present invention is not limited to the above described embodiments but may be changed properly.
- the inner cylinder 16 and the outer cylinder 17 may be integrally connected together at a position other than the groove bottom of the guide groove 8.
- the drum main body of the traversing drum used in an automatic winder or the like, is integrally molded of a ceramic burned member. Consequently, a traversing drum can be manufactured which is lighter than conventional ones, which are made of metal. It is thus possible to reduce the power consumption of the rotative driving source for the traversing drum and to extend the lifetime of the rotative driving source.
- the traversing drum is composed of the double cylinder including the inner cylinder and the outer cylinder. Furthermore, the inner cylinder and the outer cylinder are integrally molded of a ceramic burned member. Consequently, a traversing drum can be manufactured which is rigid and light even if it is thin. It is thus possible to significantly reduce the power consumption of the rotative driving source for the traversing drum and to extend the lifetime of the rotative driving source.
- the inner cylinder and the outer cylinder are intermittently connected together using the ribs. This makes it possible to further improve the rigidity of the traversing drum.
- the ribs are used to connect the groove bottom of the guide groove formed in the surface of the outer cylinder and the inner cylinder together. This makes it possible to further improve the rigidity of the traversing drum made of ceramics and composed of the double cylinder including the inner and outer cylinders.
- the inner cylinder is installed over the rotating shaft via the bearings having the rubber rings installed on their outer peripheral surfaces. It is thus possible to absorb a difference in thermal expansion based on a difference in material between the rotating shaft (metal) of the rotative driving source and the traversing drum, made of ceramics. This prevents, for example, a failure to transmit a rotative driving force owing to a possible gap between the rotating shaft and the traversing drum.
Landscapes
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Sliding-Contact Bearings (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Continuous Casting (AREA)
Abstract
The present invention provides a traversing drum used in an automatic
winder or the like, the traversing drum being made of ceramics and thus having
a small mass. A drum main body of a traversing drum 1 used in an automatic
winder or the like is composed of a double cylinder including inner cylinders
5A, 5B and an outer cylinder 9. The inner cylinders 5A, 5B and the outer
cylinder 9 are integrally molded of a ceramic burned member. Consequently, a
traversing drum can be manufactured which is rigid and light even if it is thin.
It is thus possible to significantly reduce the power consumption of a
rotative driving source for the traversing drum 1 and to extend the lifetime of
the rotative driving source (Fig. 1).
Description
The present invention relates to a traversing drum used in an automatic
winder or the like to traverse a yarn while rotating a package.
In a yarn winding device such as an automatic winder, when a yarn is wound
around a package, a traversing drum that is in pressure contact with the package
is externally rotatively driven to wind the yarn while rotating the package.
An endless track like guide groove is formed in a surface of the traversing
drum as traversing means for winding the yarn around the package uniformly in
an axial direction of the package. A traversing operation is performed by
guiding the yarn through this guide groove.
Such a traversing drum is typically formed integrally of metal such as
aluminum or iron. Specifically, a traversing drum is formed by producing a
cylinder using a casting process such as a die cast process or a lost wax
process, forming the guide groove in the cylinder, and subjecting the cylinder
to surface treatment based on machining such as grooving or finishing in order
to improve dimensional accuracy.
The traversing drum is rotated by being externally rotatively driven. The
reduced mass of the traversing drum serves to reduce loads on a rotative driving
source (motor). This makes it possible to reduce power consumption and extend
the lifetime of the motor. However, conventional traversing drums formed of the
metal such as iron using the die cast or lost wax process have the
disadvantages of having a very large mass, consuming high power, and failing to
extend the lifetime of the motor. In view of these problems, it is an object of
the present invention to solve these problems to provide a traversing drum made
of ceramics and thus having a small mass.
Means in Claim 1 employed by the present invention in order to accomplish
the object is a traversing drum which drives a winding package while being in
surface contact with the winding package and which has an endless track like
guide groove formed in an outer peripheral surface of the traversing drum to
traverse a yarn in a lateral direction, the traversing drum being characterized
in that a drum main body including the groove is integrally molded using a
ceramic burned member. When the drum main body of the traversing drum is
integrally molded using a ceramic burned body, a traversing drum can be
manufactured which is lighter than conventional ones made of metal. It is thus
possible to significantly reduce the power consumption of a rotative driving
source for the traversing drum and to extend the lifetime of the rotative
driving source.
Means in Claim 2 employed by the present invention is a traversing drum
characterized in that a drum main body is composed of a double cylinder
including an inner cylinder and an outer cylinder which are integrally molded
using a ceramic burned member. When a traversing drum is manufactured using a
double cylinder including an inner cylinder and an outer cylinder which are
integrally molded using a ceramic burned member, it is rigid and light even if
it is thin. It is thus possible to significantly reduce the power consumption
of the rotative driving source for the traversing drum and to extend the
lifetime of the rotative driving source.
Means in Claim 3 employed by the present invention is a traversing drum
characterized in that a drum main body is composed of a double cylinder
including an inner cylinder and an outer cylinder which are integrally molded
using a ceramic burned member and which are intermittently connected together
using ribs. In this aspect of the invention, the inner cylinder and the outer
cylinder are intermittently connected together using ribs. Accordingly, the
rigidity of the traversing drum can be further improved compared to the aspect
of the invention in Claim 1.
Means in Claim 4 employed by the present invention is a traversing drum
characterized in that a drum main body is composed of a double cylinder
including an inner cylinder and an outer cylinder which are integrally molded
using a ceramic burned member, and ribs are used to connected the inner
cylinder to a groove bottom of a guide groove formed in a surface of the outer
cylinder. The operations and effects of this traversing drum are the same as
those of the aspect of the invention in Claim 3.
Means in Claim 5 employed by the present invention is a traversing drum
characterized in that a drum main body is composed of a double cylinder
including an inner cylinder and an outer cylinder which are integrally molded
using a ceramic burned member, and the inner cylinder is installed over a
rotating shaft via bearings each having rubber rings installed on its outer
peripheral surface. In this aspect of the invention, the bearing having the
rubber ring installed on its outer peripheral surface is disposed between the
traversing drum and the rotating shaft. It is thus possible to absorb a
difference in thermal expansion based on a difference in material between the
rotating shaft (metal) of the rotative driving source and the traversing drum,
made of ceramics. This prevents, for example, a failure to transmit a rotative
driving force owing to a possible gap between the rotating shaft and the
traversing drum.
A configuration of the present invention will be described below on the
embodiments shown in the drawings. Figure 1 shows an automatic winder
comprising a traversing drum 1 according to a first embodiment of the present
invention. In this figure, the traversing drum 1 installed over a rotating
shaft 2 is shown in a vertical sectional view. As shown in this figure, a drum
motor 4 is fixed to a frame 3 of the automatic winder as a rotative driving
source. The rotating shaft 2 of the motor 4 has a different-diameter step
portion. Two bearings 5A, 5B are externally fitted over the different-diameter
step portion. The spacing between the bearings 5A, 5B is held by a spacer 6.
The two bearings 5A, 5B are fixed by screwing a drum nut 7 over the rotating
shaft 2.
A surface of a winding package P is contacted with the traversing drum 1 to
drive the winding package P. An endless track like guide groove 8 is formed in
an outer peripheral surface of the traversing drum 1 to traverse a yarn Y in a
lateral direction (the direction along a rotational center line C of the
traversing drum 1). A drum main body including the groove 8 is integrally
molded of a ceramic burned member. The drum main body is composed of an outer
cylinder 9 having the guide groove 8 formed in its outer peripheral surface and
inner cylinders 10A, 10B as a bearing supporting portion. The outer cylinder 9
and the inner cylinders 10A, 10B are integrally molded of the ceramic burned
member. The traversing drum 1 may be manufactured using a lost wax process or
the like. If the lost wax process is used, the traversing drum 1 is
manufactured as a product by pouring wax into a die to form a mold material,
pouring a ceramic material on the mold material, drying and solidifying the
ceramic material, then heating the ceramic material to melt and remove the wax
to form a molding base for the traversing drum 1 of a complicated shape,
subsequently baking the molding base at a high temperature, and finishing the
molding base by subjecting it to surface treatment or the like. In this
respect, after the wax has been melted and removed, the remaining wax may be
further completely burned before the molding base is baked at a high
temperature.
The traversing drum 1 is thus manufactured so as to have a double cylinder
structure including the inner and outer cylinders. The inner cylinders 10A, 10B
of the traversing drum 1 are externally fitted over two bearings 5A, 5B fixedly
installed on the different-diameter step portion of the rotating shaft 2. An
end surface plate 13 extending in an inner radial direction of the traversing
drum 1 is fixed screws 14 or the like to a disk portion of a drum wheel 12
fixed to the tip of the rotating shaft 2 (its left end in Figure 1) via a set
screw 11.
The traversing drum 1 is configured in this manner, then so it is composed
of a ceramic burned member and thus has a very small mass. It also serves to
reduce loads on a drum motor 4, which thus has significantly reduced power
consumption. It is also possible to extend the lifetime of the drum motor 4
itself. Furthermore, the groove bottom of the guide groove 8 in the traversing
drum 1 and the inner cylinders 10A, 10B as a bearing supporting portion are
integrally connected together. This makes it possible to increase the rigidity
of the whole traversing drum 1 including the outer cylinder 9.
Figure 2 shows a second embodiment of the present invention. In a
traversing drum 15, shown in Figure 2, an inner cylinder 16 is molded of a
single continuous cylinder. An outer cylinder 17 is formed integrally with the
inner cylinder 16 at one end of it. Further, as in the case with the
traversing drum 1 shown in Figure 1, the other end of the outer cylinder 17 is
fixed to the disk portion of the drum wheel 12 via screws 14 or the like.
Accordingly, the drum as a whole has a high rigidity, so that the groove bottom
of the guide groove 8 and the inner cylinder 16 are not integrally connected
together. The other arrangements, operations, and effects are the same as those
of the first embodiment.
Figure 3 shows a third embodiment of the present invention. A traversing
drum 18 according to this embodiment is a combination of the first and second
embodiments. Specifically, the inner cylinder 16 is molded of a single
continuous cylinder. The outer cylinder 17 and the inner cylinder 16 are
integrated together at one end of them. The groove bottom of the guide groove
8 and the inner cylinder 16 are integrally connected together. Consequently,
the traversing drum 18 according to this embodiment has an increased rigidity
because the inner cylinder 16 and the outer cylinder 17 are integrally molded at
one end of them and because the groove bottom of the guide groove 8 and the
inner cylinder 16 are integrally molded. Therefore, the traversing drum 18 as
a whole has an excellent rigidity. The other arrangements, operations, and
effects are the same as those of the first embodiment.
The traversing drums according to the first to third embodiments are each
composed of a ceramic burned member. The ceramic burned member has a thermal
expansion coefficient different from that of the rotating shaft 2, made of
metal. Thus, as an operation time elapses, the heating of the drum motor 4
makes a difference in thermal expansion between the traversing drum and the
rotating shaft 2. This may reduce the coupling intensity between the traversing
drum and the rotating shaft 2. Thus, as shown in Figure 4, rubber rings 19 are
installed on the outer peripheral surface of the bearings 5A, 5B to support the
traversing drum, made of ceramics, via the rubber rings 19. This serves to
absorb the difference in thermal expansion caused by the difference in
material.
The present invention is not limited to the above described embodiments but
may be changed properly. For example, the inner cylinder 16 and the outer
cylinder 17 may be integrally connected together at a position other than the
groove bottom of the guide groove 8.
As described above, according to the present invention, the drum main body
of the traversing drum, used in an automatic winder or the like, is integrally
molded of a ceramic burned member. Consequently, a traversing drum can be
manufactured which is lighter than conventional ones, which are made of metal.
It is thus possible to reduce the power consumption of the rotative driving
source for the traversing drum and to extend the lifetime of the rotative
driving source.
Further, in the present invention, the traversing drum is composed of the
double cylinder including the inner cylinder and the outer cylinder.
Furthermore, the inner cylinder and the outer cylinder are integrally molded of
a ceramic burned member. Consequently, a traversing drum can be manufactured
which is rigid and light even if it is thin. It is thus possible to
significantly reduce the power consumption of the rotative driving source for
the traversing drum and to extend the lifetime of the rotative driving source.
Moreover, in the present invention, the inner cylinder and the outer
cylinder are intermittently connected together using the ribs. This makes it
possible to further improve the rigidity of the traversing drum.
Further, in the present invention, the ribs are used to connect the groove
bottom of the guide groove formed in the surface of the outer cylinder and the
inner cylinder together. This makes it possible to further improve the
rigidity of the traversing drum made of ceramics and composed of the double
cylinder including the inner and outer cylinders.
Furthermore, in the present invention, the inner cylinder is installed over
the rotating shaft via the bearings having the rubber rings installed on their
outer peripheral surfaces. It is thus possible to absorb a difference in
thermal expansion based on a difference in material between the rotating shaft
(metal) of the rotative driving source and the traversing drum, made of
ceramics. This prevents, for example, a failure to transmit a rotative driving
force owing to a possible gap between the rotating shaft and the traversing
drum.
Claims (5)
- A traversing drum which drives a winding package while being in surface contact with the winding package and which has an endless track like guide groove formed in an outer peripheral surface of the traversing drum to traverse a yarn in a lateral direction, the traversing drum being characterized in that a drum main body including the groove is integrally molded using a ceramic burned member.
- A traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member.
- A traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member and which are intermittently connected together using ribs.
- A traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member, and ribs are used to connected the inner cylinder to a groove bottom of a guide groove formed in a surface of the outer cylinder.
- A traversing drum characterized in that a drum main body is composed of a double cylinder including an inner cylinder and an outer cylinder which are integrally molded using a ceramic burned member, and the inner cylinder is installed over a rotating shaft via bearings each having rubber rings installed on its outer peripheral surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002191621A JP3744475B2 (en) | 2002-07-01 | 2002-07-01 | Traverse drum |
| JP2002191621 | 2002-07-01 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1378476A2 true EP1378476A2 (en) | 2004-01-07 |
| EP1378476A3 EP1378476A3 (en) | 2004-04-14 |
| EP1378476B1 EP1378476B1 (en) | 2006-11-22 |
Family
ID=29720222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20030014622 Expired - Lifetime EP1378476B1 (en) | 2002-07-01 | 2003-06-26 | Traversing drum |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1378476B1 (en) |
| JP (1) | JP3744475B2 (en) |
| CN (1) | CN100368274C (en) |
| DE (1) | DE60309781T2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758425A (en) * | 2016-08-17 | 2018-03-06 | 索若德国两合股份有限公司 | Groove drum, groove drum manufacture method and weaving loom for weaving loom |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014080287A (en) * | 2012-09-26 | 2014-05-08 | Nimei Seiki Co Ltd | Traverse drum and yarn winder |
| CN104150271A (en) * | 2014-07-25 | 2014-11-19 | 桐乡市金都植绒有限公司 | Groove drum |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3128957A (en) * | 1964-04-14 | Fallscheer | ||
| US2214703A (en) * | 1937-11-17 | 1940-09-10 | American Lava Corp | Ceramic thread guide and the like |
| GB531595A (en) * | 1938-08-16 | 1941-01-07 | Wilhelm Reiners | Improvements in traversing drums for yarn or filament winding apparatus |
| DE1246482B (en) * | 1961-06-02 | 1967-08-03 | Adolff Emil Fa | Thread guide drum |
| JPS6169670A (en) * | 1984-09-12 | 1986-04-10 | Murata Mach Ltd | Traverse drum and manufacturing method thereof |
| JPH1087170A (en) * | 1996-09-17 | 1998-04-07 | Murata Mach Ltd | Winding drum |
-
2002
- 2002-07-01 JP JP2002191621A patent/JP3744475B2/en not_active Expired - Fee Related
-
2003
- 2003-06-26 DE DE2003609781 patent/DE60309781T2/en not_active Expired - Lifetime
- 2003-06-26 EP EP20030014622 patent/EP1378476B1/en not_active Expired - Lifetime
- 2003-07-01 CN CNB03145089XA patent/CN100368274C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758425A (en) * | 2016-08-17 | 2018-03-06 | 索若德国两合股份有限公司 | Groove drum, groove drum manufacture method and weaving loom for weaving loom |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1378476B1 (en) | 2006-11-22 |
| CN1468795A (en) | 2004-01-21 |
| CN100368274C (en) | 2008-02-13 |
| EP1378476A3 (en) | 2004-04-14 |
| JP3744475B2 (en) | 2006-02-08 |
| JP2004035127A (en) | 2004-02-05 |
| DE60309781T2 (en) | 2007-10-11 |
| DE60309781D1 (en) | 2007-01-04 |
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