NL2015750B1 - Low friction bearing assembly for a textile treatment apparatus. - Google Patents

Low friction bearing assembly for a textile treatment apparatus. Download PDF

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Publication number
NL2015750B1
NL2015750B1 NL2015750A NL2015750A NL2015750B1 NL 2015750 B1 NL2015750 B1 NL 2015750B1 NL 2015750 A NL2015750 A NL 2015750A NL 2015750 A NL2015750 A NL 2015750A NL 2015750 B1 NL2015750 B1 NL 2015750B1
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NL
Netherlands
Prior art keywords
bearing
support member
treatment apparatus
textile treatment
ceramic
Prior art date
Application number
NL2015750A
Other languages
Dutch (nl)
Inventor
Johannes Gierveld Hendrikus
Hendrik Rohaan Jan
Original Assignee
Brugman Holland
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Filing date
Publication date
Application filed by Brugman Holland filed Critical Brugman Holland
Priority to NL2015750A priority Critical patent/NL2015750B1/en
Application granted granted Critical
Publication of NL2015750B1 publication Critical patent/NL2015750B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/02—Rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2340/00—Apparatus for treating textiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Low friction bearing assembly for a textile treatment apparatus, comprising a main support member (2) mountable on the textile treatment apparatus, an annular bearing support member (4) arranged for rotation within the main support member (2); and a ceramic bearing (6) secured in the annular bearing support member (4), the ceramic bearing (6) having a bore (8) for receiving a shaft stub (10) of a roller member (12) of the textile treatment apparatus.

Description

Low friction bearing assembly for a textile treatment apparatus Field of the invention
The present invention relates to a low friction bearing assembly for a textile treatment apparatus, in particular for an apparatus for continuous treatment of a fabric.
In a further aspect the present invention relates to a textile treatment apparatus for dry, humid or wet treatment of fabric.
Prior art US patent publication US 3,545,829 discloses a support bearing for a roller rotating in a humid or liquid containing receptacle. The support bearing is provided with shaft stubs or journals which extend through openings in the receptacle wall. A bearing member as well as sealing members therefor are provided on each side of the rotating roller mounted outside of the receptacle within a cup attached thereto. The sealing members for each support bearing comprise a rotating and a stationary sealing ring, the rotating sealing ring being disposed on the shaft stub of the roller and being rotatable therewith. The stationary sealing ring is supported by a ring diaphragm or membrane. The frictional sealing surface of the stationary sealing ring is pressed against the associated sealing surface of the rotating sealing ring by a spring support ring also mounted outside of the receptacle within the cup. US patent publication 4,257,246 discloses a textile treatment apparatus or arrangement for the continuous treatment especially washing of spread out liquid permeable textile material in web form, comprising a plurality of deflection cylinders over which the material is conducted and means for applying liquid to only the side of the textile material facing the deflection cylinders, so that the liquid will be pushed through the textile material.
Prior art textile treatment arrangements such as the one disclosed in US 4,257,246 typically comprise a large number of rotatable rolls, (calendar) drums and/or cylinders for conducting a continuous sheet of fabric, woven or non-woven web through the textile treatment arrangement. The large number of rotatable rolls, drums and/or cylinders are often configured such that a meandering path is imposed on the continuous sheet of fabric being conducted over the rolls. As each roll, drum or cylinder may comprise a roller bearing assembly at each end thereof comparable to the bearing assembly as disclosed in US 3,545,829, rolling resistance becomes significant when the continuous sheet of fabric is pulled through the textile treatment arrangement and all rolls are forced to rotate. As the fabric is being conducted over the rolls, tension forces on and within the fabric is relatively high and imposes limits on the types of fabrics that can be treated without causing damage, possibly rupture. For example, highly elastic sheets of fabric may not be suitable for a prior art textile treatment arrangement as mentioned above because pulling forces on the elastic sheet of fabric for overcoming rolling resistance would overstretch and possibly result in rupture. Furthermore, high rolling resistance for each roll, drum or cylinder used for the textile treatment arrangement requires significant amounts of power for driving e.g. electrical motors connected to one or more rotatable rollers, drums, and or cylinders. A disadvantages of prior art bearing assemblies for a textile treatment arrangement is that such bearing assemblies must be arranged outside a receptacle or trough used for wet treatment of a sheet of fabric. For example, a bearing assembly arranged within the respectable and immersed in a treatment liquid for the fabric would be subjected to excessive wear due to suspended particles, acidity levels, lack of lubrication etc. Then to keep maintenance cost down, prior art bearing assemblies are arranged outside the receptacle for easy servicing of the bearing assembly, such as applying lubrication.
Summary of the invention
The present invention seeks to provide a low friction bearing assembly for a textile treatment apparatus, wherein the low friction bearing assembly is capable of self-alignment and withstands various chemicals and a large range of environmental conditions during textile treatment. The low friction bearing assembly does not require any lubrication and/or any significant amounts of maintenance or servicing. Further, the low friction bearing assembly of the present invention can be used for various types of textile treatment apparatuses suitable for washing, bleaching, mercerizing, dyeing, drying, singeing and the like, and for various types of fabrics, woven or non-woven web.
According to the present invention a low friction bearing assembly of the type defined in the preamble is provided, comprising a main support member mountable on the textile treatment apparatus, an annular bearing support member arranged for rotation within the main support member, and a ceramic bearing secured in the annular bearing support member, the ceramic bearing having a bore for receiving a shaft stub of a roller member of the textile treatment apparatus.
The low friction bearing assembly of the present invention provides a selfaligning bearing assembly for a textile treatment apparatus, wherein the annular bearing support member is arranged for rotation within the main support member to provide, for example, angular self-adjustment of a misaligned shaft stub extending through the bore of the ceramic bearing. The self-alignment of the low friction bearing assembly minimizes stress within the ceramic bearing, which in turn further reduces friction and signs of wear of said bearing. Also, the ceramic bearing requires no lubrication and as a result the low friction bearing assembly requires very little if at all any maintenance or servicing.
Because of the above advantageous effects and characteristics, the low friction bearing assembly may be arranged within a humid or liquid containing receptacle for wet textile treatment, such as washing, dyeing etc., without significantly increasing friction losses and/or bearing degradation.
In a further aspect the present invention seeks to provide an improved textile treatment apparatus, wherein the textile treatment apparatus allows for a considerable reduction in fabric tension during textile processing and is capable of handling fabrics exhibiting a wide range of elasticity. Furthermore, the textile treatment apparatus minimizes energy or power consumption during operation.
According to the present invention a textile treatment apparatus of the type defined in the preamble is provided, comprising a fabric entrance and a fabric exit; a plurality of rotatable roller members arranged between the fabric entrance and fabric exit, wherein a continuous sheet of fabric is conducted along the plurality of roller members between the fabric entrance and fabric exit during operation of the textile treatment apparatus, wherein at least one of the plurality of roller members is journaled for rotation in a low friction bearing assembly mounted on the textile treatment apparatus, the low friction bearing assembly comprising a ceramic bearing.
The textile treatment apparatus enjoys a significant reduction in friction losses during operation thereof, which reduction can be attributed to the ceramic bearing and as a result a reduction in tension in the continuous sheet of fabric being conducted is observed. Another advantage of the ceramic bearing of the textile treatment apparatus is that bearing maintenance is minimized as no lubrication is necessary. Further, the ceramic bearing can be arranged within a variety of wet treatment environments with little to no effect on durability of said bearing. Because of the low friction bearing assembly mounted on the textile treatment apparatus less power is consumed or wasted during operation.
Short description of drawings
The present invention will be discussed in more detail hereinafter based on a number of exemplary embodiments with reference to the drawings, in which
Figure 1 shows a cross sectional view of an embodiment of a low friction bearing assembly according to the present invention; and
Figure 2 shows a cross sectional view of an embodiment of a textile treatment apparatus according to the present invention.
Detailed description of exemplary embodiments
For convenience and maximum clarity, reference is made to Figure 1 showing a cross sectional view of an embodiment of a low friction bearing assembly according to the present invention, and Figure 2 shows a cross sectional view of an embodiment of a textile treatment apparatus according to a further aspect of the present invention.
In the embodiment of Figure 1 a low friction bearing assembly 1 is shown comprising a main support member 2 mountable on a textile treatment apparatus. An exemplary textile treatment apparatus 30 on which the low friction bearing 1 may be mounted is depicted in Figure 2. The main support member 2 of the low friction bearing assembly 1 may be mounted on, for example, a main frame member or a main support structure of the textile treatment apparatus 30. The low friction bearing assembly 1 further comprises an annular bearing support member 4 arranged for rotation, e.g. for aligning purposes, within the main support member 2 and a ceramic bearing 6 is provided and secured in the annular bearing support member 4. The ceramic bearing 6 comprises a bore for receiving a shaft stub 10 of a roller member 12 of the textile treatment apparatus.
The annular bearing support member 4 of the low friction bearing assembly 1 allows angular misalignment of the shaft stub 10 as indicated by a rotation angle a in Figure 1, thereby minimizing stress on the ceramic bearing 6 and as a result also friction forces and wear. In actual applications the shaft stub 10 may not be perfectly aligned with the bore of the ceramic bearing 6. Such misalignment may be attributed to e.g. dimensional variations but also to (dynamic) loads on the roller member 12 during operation of the textile treatment apparatus 30. To prevent high stresses within ceramic material of the ceramic bearing 6, the annular bearing support member 4 is operable to freely rotate over a rotation angle a to accommodate misalignment of the shaft stub 10.
The ceramic bearing 6 of the low friction bearing assembly 1 reduces friction and does not need any significant maintenance such as lubrication. Furthermore, a considerable reduction in utility costs can be achieved as power consumption during rotation of the roller member 12 is greatly reduced.
In an advantageous embodiment, the ceramic bearing 6 is a ball bearing, a roller bearing or a plain bearing. These types of bearings may be commercially available and a custom ceramic bearing is not necessary for the low friction bearing assembly 1. The annular bearing support bearing 4 may therefore be adapted to house virtually any type of standard ceramic bearing available.
In an embodiment, the main support member 2 comprises a first clamping member 14 and a second clamping member 16. The first and second clamping member 14, 16 may be, but need not, be part of a pillow block. The first and second clamping member 14, 16 each comprise a first concave spherical surface 18 and a second concave spherical surface 20, respectively. The annular bearing support member 4 comprises a convex spherical surface 22 congruent to the first and second concave spherical surface 18, 20, wherein the annular bearing support member 4 is arranged for rotation between the first and second clamping member 14, 16.
The congruent spherical engagement between the first and second clamping member 14, 16 with the annular bearing support member 4 allows free rotation of the annular bearing support member 4 and thus the ceramic bearing 6 arranged therein, and so any misalignment of the shaft stub 10 can be taken into account to avoid stress on the ceramic bearing 6.
In an embodiment, the convex spherical surface 22 of the annular bearing support member 4 may be in sliding engagement with the first and second concave spherical surface 18, 20, so that misalignment of the shaft stub 10 is readily accounted for through sliding movement of the annular support bearing 4 within the main support member 2. Surface smoothness and surface roughness of the convex spherical surface 22 and the first and second concave spherical surface 18, 20 determines a level of friction between the annular bearing support member 4 and the first and second clamping member 14, 16.
In an alternative embodiment the convex spherical surface 22 of the annular bearing support member 4 is in rolling engagement with the first and second concave spherical surface 18, 20, so that possible friction forces during rotation of the annular bearing support member 4 are minimized. In another embodiment a further ceramic bearing may be provided to provide rolling engagement between the annular bearing support member 4, i.e. the convex spherical surface 22, and the first and second concave spherical surface 18, 20.
To secure the ceramic bearing 6 on the annular bearing support member 4 a retainer member 24 may be provided and arranged within the annular bearing support member 4. This embodiment ensures that the ceramic bearing 6 is affixed to the annular support. In a simple embodiment, the retainer member 24 may comprise a mere friction fit of the ceramic bearing 6 within the annular bearing support member 4.
In a typical embodiment, the roller member 12 comprises a shaft stub 10 at both ends, each of which is journaled for rotation in a ceramic bearing 6. To account for axial movement of the roller member 12 due to vibration, thermal expansion and so on, the ceramic bearing 6 need not be firmly secured to the annular bearing support member 4, thereby allowing axial movement of the roller member 12, in particular the shaft stub 10.
In most applications a roller member 12 will be journaled for rotation in a first ceramic bearing which is secured on a first annular bearing support member through a retainer member, and a second ceramic bearing is in movable or sliding engagement with a second annular bearing support member to allow for axial movement of a shaft stub arranged in a bore of the second ceramic bearing.
In a specific embodiment, the retainer member 24 comprises a first retainer ring 26 and a second retainer ring 28 each being releasable arranged in an inner groove 5 of the annular bearing support member 4, wherein the ceramic bearing 6 is interposed between the first and second retainer ring 26, 28. The first and second retainer ring 26, 28 each provide reliable axial support to the ceramic bearing 6 within the annular bearing support member 4, so that the ceramic bearing 6 is firmly secured thereto. Furthermore, due to the releasable arrangement of the first and second retainer member 26, 28, the low friction bearing assembly 1 is easily disassembled should it be required, e.g. when the ceramic bearing 6 needs to be placed in or removed from the annular bearing support member 4.
For wet and chemical textile treatment of fabric, it is advantageous that the main support member 2 and the annular bearing support member 4 are of stainless steel (“inox”) or carbon, so that corrosion is minimized under various wet and chemical conditions during operation of the textile treatment apparatus 30 on which the low friction bearing assembly 1 is mounted. Note that any suitable material having a high temperature and chemical resistance may be used for the main support member 2 and the annular bearing support member 4 for preventing corrosion. In a further embodiment the first and second clamping member 14, 16 are of stainless steel or carbon.
In a further aspect, the present invention relates to a textile treatment apparatus for dry, humid or wet treatment of fabric, such as washing, bleaching, mercerizing, dyeing, drying, singeing etc. The fabric may comprise woven or non-woven web.
Figure 2 depicts a cross-sectional view of an embodiment of a textile treatment apparatus 30 according to the present invention. In the embodiment shown, the textile treatment apparatus 30 comprises a fabric entrance 31, a fabric exit 32 and a plurality of rotatable roller members 34 arranged between the fabric entrance 31 and fabric exit 32. During operation of the textile treatment apparatus 30, a continuous sheet of fabric 36 is conducted along the plurality of roller members 34 between the fabric entrance 31 and fabric exit 32.
In many applications the plurality of roller members 34 are arranged to impose a meandering path on the continuous sheet of fabric 36 so that one or more textile treatment steps can be imposed on the sheet of fabric 36 in a smaller area or space. For example, in Figure 2 the plurality of rollers member 34 are arranged in two parallel rows, wherein the two rows are separated by a vertical distance of, e.g. 1 meter. The continuous sheet of fabric 36 is repeatedly conducted along the plurality of roller members 34 in up and down fashion. Of course, dependent on the actual treatment steps to be performed on the continuous sheet of fabric 36, the plurality of roller members 34 may be arranged in any desirable configuration.
Further, at least one of the plurality of roller members 34 is journaled for rotation in a low friction bearing assembly 1 (see Figure 1) mounted on the textile treatment apparatus 30, wherein the low friction bearing assembly 1 comprises a ceramic bearing 6.
According to the present invention, the ceramic bearing 6 significantly reduces rolling resistance of the at least one roller member of the plurality of roller members 34. As a result, fabric tension within the continuous sheet of fabric 36 is reduced significantly as said fabric 26 is conducted along the at least one roller member.
Because rolling resistance of the at least one of the plurality of roller members 34 is reduced, a continuous sheet of fabric 36 having a relatively high elasticity can be treated by the textile treatment apparatus 30 without damaging or rupturing said sheet of fabric 36. For example, when a high elastic continuous sheet of fabric 36 is conducted along the plurality of roller members 34, pulling forces tend to lengthen the sheet of fabric 36, often causing a width of the sheet of fabric 36 to reduce excessively. In such a scenario it becomes difficult to properly treat and guide the continuous sheet of fabric 36 through the textile treatment apparatus 30 as well as collecting it by a storage drum near the fabric exit 32. However, according to the invention, the ceramic bearing 6 reduces friction losses and rolling resistance and therefore allows treatment of highly elastic continuous sheets of fabric 36 by the textile treatment apparatus 30.
Another important advantage of the reduced rolling resistance provided by the ceramic bearing 6 is that energy consumption of the textile treatment apparatus 30 is minimized. For example, in many applications the textile treatment apparatus 30 may comprise a large number of roller members 34. In case a majority or each of the plurality of roller member 34 is journaled for rotation in the low friction bearing assembly 1, i.e. the ceramic bearing 6, then energy consumption of the textile treatment apparatus 30 is significantly reduced, so that smaller electrical motors can be used for driving one or more roller members 34. Smaller electrical motors produce less noise and heat, which in turn provides for an improved working environment for personnel operating the textile treatment apparatus 30.
On an even larger scale, when entire factories are fitted with a plurality of textile treatment apparatuses 30 each comprising roller members 34 journaled in ceramic bearings 6, then overall operating costs of such factories is reduced considerably.
Another advantage of the ceramic bearing 6 of the textile treatment apparatus 30 is that virtually no maintenance or servicing is needed, such as lubrication. The ceramic bearing 6 can also be subjected to various abrasive and chemical environments.
In advantageous embodiments the ceramic bearing 6 is a ball bearing, a roller bearing or a plain bearing. Such bearings are commercially available and a custom ceramic bearing is not needed for the textile treatment apparatus 30, thereby reducing cost as the annular bearing support member 4 can be designed and adapted according to standardized dimensions of such bearings.
In an embodiment, the textile treatment apparatus may comprise a housing 38 enclosing at least one of the plurality of roller members 34 journaled for rotation in the low friction bearing assembly 1, wherein the low friction bearing assembly 1 is arranged within the housing 38. Since the ceramic bearing 6 of the low friction bearing assembly 1 is highly resistant to wear, abrasive particles and various chemicals, the low friction bearing assembly 1 can be conveniently housed within the housing 38, so that the textile treatment apparatus 30 comprises less external parts requiring maintenance.
In an exemplary embodiment the housing 38 may comprise a liquid containing receptacle 39 through which the continuous sheet of fabric 36 is conducted for wet treatment thereof. In the embodiment shown in Figure 2, the low friction bearing assembly 1 may even be completely immersed in a liquid contained in the receptacle 39, wherein the ceramic bearing 6 needs no maintenance. Consequently, downtime of the textile treatment apparatus 30 is minimized.
As depicted in Figure 1, in an embodiment a further support member 40 may be mounted to e.g. a side wall of the housing 38 for supporting the low friction bearing assembly 1. For example, the main support member 2 may be mounted on the further support member 40, so that the low friction bearing assembly 1 is affixed to the housing 38 of the textile treatment apparatus 30.
In an embodiment, the low friction bearing assembly 1 comprises a main support member 2 mounted on the textile treatment apparatus 30 and an annular bearing support member 4 arranged for rotation within the main support member 2. The ceramic bearing 6 is secured in the annular bearing support member 4, wherein the ceramic bearing 6 comprises a bore 8 for receiving a shaft stub 10 of a roller member 12 of the at least one of the plurality of roller members 34. In this embodiment the main support member 2 and the annular bearing support member 4 allow self-alignment of the shaft stub 10 extending through the bore 8 of the ceramic bearing 6. As with the low friction bearing assembly 1 as disclosed above, the roller member 12, in particular the shaft stub 10, may be misaligned with respect to the bore 8 of the ceramic bearing 6 due to various dimensional variations, errors and/or loads on the roller member 12 during operation. To reduce stress on the ceramic bearing 6 the annular bearing support member 4 is journaled for rotation over a rotation angle a within the main support member 2. The orientation of the ceramic bearing 6 can therefore be adapted at any given moment to the orientation of the shaft stub 10 extending through the bore 8. As a result, the ceramic bearing 6 is able to provide very low rolling resistance without any force or stress on the ceramic bearing 6 that would otherwise impose more friction and wear.
In an embodiment, the main support member 2 may comprises a first clamping member 14 and a second clamping member 16, the first and second clamping member 14, 16 each comprising a first concave spherical surface 18 and a second concave spherical surface 20, respectively. The annular bearing support member 4 is arranged for rotation between the first and second clamping member 14, 16, wherein the annular bearing support member 4 comprises a convex spherical surface 22 congruent to the first and second concave spherical surface 18, 20. The first and second clamping member 14, 16 allow the annular bearing support member 4 to be conveniently enclosed there between, wherein the convex spherical surface 22 is in congruent engagement with the first and second concave spherical surface 18, 20 of the annular support member 2, i.e. of the first and second clamping member 14, 16. In an embodiment the main support member 2 comprises a pillow block, wherein the pillow block comprises the first and second clamping member 14, 16. Such a pillow block is readily mounted on the textile treatment apparatus 30.
In an embodiment, the convex spherical surface 22 of the annular bearing support member 4 is in sliding engagement with the first and second concave spherical surface 18, 20. This embodiment provides a simple yet effective solution for allowing the annular bearing support member 4 to rotate over the rotation angle a within the first and second clamping member 14, 16 in response to any misalignment of the shaft stub 10 with respect to the bore 8 of the ceramic bearing 6.
In an alternative embodiment, the convex spherical surface 22 of the annular bearing support member 4 is in rolling engagement with the first and second concave spherical surface 18, 20. In this embodiment the annular bearing support member 4 is journaled in the first and second clamping member 14, 16, through one or more roller balls or roller cylinders interposed between the convex spherical surface 22 and the first and second concave spherical surface 18, 20. Such rolling engagement would reduce rotation resistance between the annular bearing support member 4 and the main support member 2 in case the shaft stub 10 is misaligned with the bore 8 of the ceramic bearing 6.
When the textile treatment apparatus 30 of the present invention is used for wet treatment of a continuous sheet of fabric 36, such as for washing, dyeing etc., there is provided an embodiment wherein the main support member 2 and the annular bearing support member 4 are of stainless steel or carbon. In this embodiment corrosion of the main support member 2 and the annular bearing support member 4 is prevented so that the low friction bearing assembly 1 retains its low friction characteristics in corrosive conditions. As with the low friction bearing assembly 1 as disclosed above, any suitable material having a high temperature and chemical resistance may be used for the main support member 2 and the annular bearing support member 4 for preventing corrosion. In a further embodiment the first and second clamping member 14,16 are of stainless steel, which ensures that the first and second concave spherical surface 18,20 remain smooth and retain a low surface roughness under a variety of wet corrosive conditions.
In view of the above disclosure, the present invention can now be summarized by the following embodiments:
Embodiment 1. Low friction bearing assembly for a textile treatment apparatus, comprising a main support member (2) mountable on the textile treatment apparatus, an annular bearing support member (4) arranged for rotation within the main support member (2); and a ceramic bearing (6) secured in the annular bearing support member (4), the ceramic bearing (6) having a bore (8) for receiving a shaft stub (10) of a roller member (12) of the textile treatment apparatus.
Embodiment 2. Low friction bearing assembly according to embodiment 1, wherein the main support member (2) comprises a first clamping member (14) and a second clamping member (16), the first and second clamping member (14, 16) each comprising a first concave spherical surface (18) and a second concave spherical surface (20), respectively, wherein the annular bearing support member (4) is arranged for rotation between the first and second clamping member (14, 16), the annular bearing support member (4) comprising a convex spherical surface (22) congruent to the first and second concave spherical surface (18, 20).
Embodiment 3. Low friction bearing assembly according to embodiment 2, wherein the convex spherical surface (22) of the annular bearing support member (4) is in sliding engagement with the first and second concave spherical surface (18,20). Embodiment 4. Low friction bearing assembly according to anyone of embodiments 1-3, wherein the ceramic bearing (6) is a ball bearing, a roller bearing or a plain bearing.
Embodiment 5. Low friction bearing assembly according to anyone of embodiments 1-4, further comprising a retainer member (24) arranged within the annular bearing support member (4) for securing the ceramic bearing (6) thereon. Embodiment 6. Low friction bearing assembly according to embodiment 5, wherein the retainer member (24) comprises a first retainer ring (26) and a second retainer ring (28) each being releasable arranged in an inner groove (5) of the annular bearing support member (4), the ceramic bearing (6) being interposed between the first and second retainer ring (26, 28).
Embodiment 7. Low friction bearing assembly according to anyone of embodiments 1-6, wherein the main support member (2) and the annular bearing support member (4) are of stainless steel or carbon.
Embodiment 8. Textile treatment apparatus for dry or wet treatment of fabric, comprising a fabric entrance (31) and a fabric exit (32); a plurality of rotatable roller members (34) arranged between the fabric entrance (31) and fabric exit (32), wherein a continuous sheet of fabric (36) is conducted along the plurality of roller members (34) between the fabric entrance (31) and fabric exit (32) during operation of the textile treatment apparatus (30), wherein at least one of the plurality of roller members (34) is journaled for rotation in a low friction bearing assembly (1) mounted on the textile treatment apparatus (30), the low friction bearing assembly (1) comprising a ceramic bearing (6).
Embodiment 9. Textile treatment apparatus according to embodiment 8, further comprising a housing (38) enclosing at least one of the plurality of roller members (34) journaled for rotation in the low friction bearing assembly (1), wherein the low friction bearing assembly (1) is arranged within the housing (38).
Embodiment 10. Textile treatment apparatus according to anyone of embodiments 8-9, wherein the low friction bearing assembly (1) comprises a main support member (2) mounted on the textile treatment apparatus (30), an annular bearing support member (4) arranged for rotation within the main support member (2); and wherein the ceramic bearing (6) is secured in the annular bearing support member (4), the ceramic bearing (6) having a bore (8) for receiving a shaft stub (10) of a roller member (12) of the at least one of the plurality of roller members (34).
Embodiment 11. Textile treatment apparatus according embodiment 10, wherein the main support member (2) comprises a first clamping member (14) and a second clamping member (16), the first and second clamping member (14,16) each comprising a first concave spherical surface (18) and a second concave spherical surface (20), respectively, wherein the annular bearing support member (4) is arranged for rotation between the first and second clamping member (14, 16), the annular bearing support member (4) comprising a convex spherical surface (22) congruent to the first and second concave spherical surface (18,20).
Embodiment 12. Textile treatment apparatus according to embodiment 11, wherein the convex spherical surface (22) of the annular bearing support member (4) is in sliding engagement with the first and second concave spherical surface (18, 20). Embodiment 13. Textile treatment apparatus according to any one of embodiments 10-12, wherein the main support member (2) and the annular bearing support member (4) are of stainless steel or carbon.
Embodiment 14. Textile treatment apparatus according to anyone of embodiments 8-13, wherein the ceramic bearing (6) is a ball bearing, a roller bearing or a plain bearing.
The present invention embodiments have been described above with reference to a number of exemplary embodiments as shown in and described with reference to the drawings. Modifications and alternative implementations of some parts or elements are possible, and are included in the scope of protection as defined in the appended claims.

Claims (14)

1. Lagersamenstel met lage wrijving voor een textielbehandelingsapparaat, omvattende een hoofdondersteuningsonderdeel (2) monteerbaar op het textielbehandelingsapparaat, een ringvormig lagerondersteuningsonderdeel (4) roteerbaar aangebracht binnen het hoofdondersteuningsonderdeel (2); en een keramisch lager (6) vastgezet in het ringvormig lagerondersteuningsonderdeel (4), waarbij het keramisch lager (6) een boring (8) omvat voor het opnemen van een asuiteinde (10) van een rollerelement (12) van het textielbehandelingsapparaat.A low-friction bearing assembly for a textile treatment apparatus, comprising a main support member (2) mountable on the textile treatment apparatus, an annular bearing support member (4) rotatably mounted within the main support member (2); and a ceramic bearing (6) secured in the annular bearing support member (4), the ceramic bearing (6) including a bore (8) for receiving an axle end (10) of a roller element (12) of the textile treatment apparatus. 2. Lagersamenstel volgens conclusie 1, waarbij het hoofdondersteuningsonderdeel (2) een eerste klemonderdeel (14) en een tweede klemonderdeel (16) omvat, waarbij het eerste en het tweede klemonderdeel (14, 16) elk een eerste concaaf sferisch oppervlak (18), respectievelijk, een tweede concaaf sferisch oppervlak (20) omvat, waarbij het ringvormig lagerondersteuningsonderdeel (4) roteerbaar is aangebracht tussen het eerste en het tweede klemonderdeel (14, 16), en waarbij het ringvormig lagerondersteuningsonderdeel (4) een convex sferisch oppervlak (22) omvat dat congruent is met het eerste en het tweede concaaf sferisch oppervlak (18, 20).A bearing assembly according to claim 1, wherein the main support member (2) comprises a first clamping member (14) and a second clamping member (16), the first and the second clamping members (14, 16) each having a first concave spherical surface (18), respectively, a second concave spherical surface (20), wherein the annular bearing support member (4) is rotatably mounted between the first and second clamping member (14, 16), and wherein the annular bearing support member (4) has a convex spherical surface (22) which is congruent with the first and second concave spherical surfaces (18, 20). 3. Lagersamenstel volgens conclusie 2, waarbij het convex sferisch oppervlak (22) van het ringvormig lagerondersteuningsonderdeel (4) in glijdende aangrijping is met het eerste en het tweede concaaf sferisch oppervlak (18,20).The bearing assembly of claim 2, wherein the convex spherical surface (22) of the annular bearing support member (4) is in sliding engagement with the first and second concave spherical surfaces (18, 20). 4. Lagersamenstel volgens een van de conclusies 1-3, waarbij het keramisch lager (6) een kogellager, een rollager of een glijlager omvat.Bearing assembly according to any of claims 1-3, wherein the ceramic bearing (6) comprises a ball bearing, a roller bearing or a sliding bearing. 5. Lagersamenstel volgens een van de conclusies 1-4, verder omvattende een borgonderdeel (24) aangebracht binnen het ringvormig lagerondersteuningsonderdeel (4) voor het daarin vastzetten van het keramisch lager (6).The bearing assembly of any of claims 1-4, further comprising a locking member (24) disposed within the annular bearing support member (4) for securing the ceramic bearing (6) therein. 6. Lagersamenstel volgens conclusie 5, waarbij het borgonderdeel (24) een eerste borgring (26) en een tweede borgring (28) omvat die elk losneembaar zijn aangebracht in een inwendige groef (5) van het ringvormig lagerondersteuningsonderdeel (4), waarbij het keramische lager (6) tussen de eerste en de tweede borgring (26, 28) is opgesteld.The bearing assembly of claim 5, wherein the locking member (24) comprises a first locking ring (26) and a second locking ring (28), each of which is releasably mounted in an internal groove (5) of the annular bearing support member (4), the ceramic bearing (6) is arranged between the first and second locking rings (26, 28). 7. Lagersamenstel volgens een van de conclusies 1-6, waarbij het hoofdondersteuningsonderdeel (2) en het ringvormig lagerondersteuningsonderdeel (4) van roestvrij staal of carbon zijn.The bearing assembly according to any of claims 1-6, wherein the main support member (2) and the annular bearing support member (4) are made of stainless steel or carbon. 8. Textielbehandelingsapparaat voor droge of natte behandeling van textiel, omvattende een weefselingang (31) en een weefseluitgang (32); een veelvoud van roteerbare rollerelementen (34) die tussen de weefselingang (31) en de weefseluitgang (32) zijn aangebracht, waarbij een continue laag van weefsel (36) langs het veelvoud van rollerelementen (34) tussen de weefselingang (31) en de weefseluitgang (32) wordt geleid tijdens bedrijf van het textielbehandelingsapparaat (30), waarbij ten minste één van het veelvoud van rollerelementen (34) roteerbaar is gelagerd in een lagersamenstel (1) met lage wrijving van het textielbehandelingsapparaat (30), waarbij het lagersamenstel (1) een keramisch lager (6) omvat.A textile treatment apparatus for dry or wet treatment of textile, comprising a fabric entrance (31) and a fabric exit (32); a plurality of rotatable roller elements (34) disposed between the tissue entrance (31) and the tissue exit (32), a continuous layer of tissue (36) along the plurality of roller elements (34) between the tissue entrance (31) and the tissue exit (32) is guided during operation of the textile treatment apparatus (30), wherein at least one of the plurality of roller elements (34) is rotatably mounted in a low-friction bearing assembly (1) of the textile treatment apparatus (30), the bearing assembly (1) ) comprises a ceramic bearing (6). 9. Textielbehandelingsapparaat volgens conclusie 8, verder omvattende een behuizing (38) die ten minste één van het veelvoud van rollerelementen (34) omsluit, waarbij de ten minste één van het veelvoud van rollerelementen (34) roteerbaar is gelagerd in het lagersamenstel (1), waarbij het lagersamenstel (1) binnen de behuizing (38) is opgesteld.The textile treatment apparatus of claim 8, further comprising a housing (38) enclosing at least one of the plurality of roller elements (34), the at least one of the plurality of roller elements (34) being rotatably mounted in the bearing assembly (1) wherein the bearing assembly (1) is disposed within the housing (38). 10. Textielbehandelingsapparaat volgens een van de conclusies 8-9, waarbij het lagersamenstel (1) met lage wrijving verder een hoofdondersteuningsonderdeel (2) omvat dat gemonteerd is op het textielbehandelingsapparaat (30), en verder een ringvormig lagerondersteuningsonderdeel (4) omvat dat roteerbaar is aangebracht binnen het hoofdondersteuningsonderdeel (2); en waarbij het keramisch lager (6) is vastgezet in het ringvormig lagerondersteuningsonderdeel (4), en waarbij het keramisch lager (6) een boring (8) omvat voor het opnemen van een asuiteinde (10) van een rollerelement (12) van het textielbehandelingsapparaat (3 0).The textile treatment apparatus according to any of claims 8-9, wherein the low friction bearing assembly (1) further comprises a main support member (2) mounted on the textile treatment apparatus (30), and further comprises an annular bearing support member (4) rotatable mounted within the main support member (2); and wherein the ceramic bearing (6) is secured in the annular bearing support member (4), and wherein the ceramic bearing (6) comprises a bore (8) for receiving an axis end (10) of a roller element (12) of the textile treatment apparatus (30). 11. Textielbehandelingsapparaat volgens conclusie 10, waarbij het hoofdondersteuningsonderdeel (2) een eerste klemonderdeel (14) en een tweede klemonderdeel (16) omvat, waarbij het eerste en het tweede klemonderdeel (14, 16) elk een eerste concaaf sferisch oppervlak (18), respectievelijk, een tweede concaaf sferisch oppervlak (20) omvat, waarbij het ringvormig lagerondersteuningsonderdeel (4) roteerbaar is aangebracht tussen het eerste en het tweede klemonderdeel (14, 16), en waarbij het ringvormig lagerondersteuningsonderdeel (4) een convex sferisch oppervlak (22) omvat dat congruent is met het eerste en het tweede concaaf sferisch oppervlak (18, 20).The textile treatment apparatus of claim 10, wherein the main support member (2) comprises a first clamping member (14) and a second clamping member (16), the first and the second clamping members (14, 16) each having a first concave spherical surface (18), respectively, a second concave spherical surface (20), wherein the annular bearing support member (4) is rotatably mounted between the first and second clamping member (14, 16), and wherein the annular bearing support member (4) has a convex spherical surface (22) which is congruent with the first and second concave spherical surfaces (18, 20). 12. Textielbehandelingsapparaat volgens conclusie 11, waarbij het convex sferisch oppervlak (22) van het ringvormig lagerondersteuningsonderdeel (4) in glijdende aangrijping is met het eerste en het tweede concaaf sferisch oppervlak (18,20).The textile treatment apparatus of claim 11, wherein the convex spherical surface (22) of the annular bearing support member (4) is in sliding engagement with the first and second concave spherical surfaces (18, 20). 13. Textielbehandelingsapparaat volgens een van de conclusies 10-12, waarbij het hoofdondersteuningsonderdeel (2) en het ringvormig lagerondersteuningsonderdeel (4) van roestvrij staal of carbon zijn.The textile treatment apparatus according to any of claims 10-12, wherein the main support member (2) and the annular bearing support member (4) are made of stainless steel or carbon. 14. Textielbehandelingsapparaat volgens een van de conclusies 8-13, waarbij het keramisch lager (6) een kogellager, een rollager of een glijlager omvat.A textile treatment apparatus according to any of claims 8-13, wherein the ceramic bearing (6) comprises a ball bearing, a roller bearing or a sliding bearing.
NL2015750A 2015-11-09 2015-11-09 Low friction bearing assembly for a textile treatment apparatus. NL2015750B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796471A (en) * 1971-12-03 1974-03-12 Riggs & Lombard Inc Corrosion resistant roll & bearing assembly
JPS5319086U (en) * 1976-07-24 1978-02-18
US5954880A (en) * 1993-11-05 1999-09-21 Nsk Ltd. Roller support device in molten metal plating bath
EP1353003A2 (en) * 2002-04-10 2003-10-15 Eduard Küsters Maschinenfabrik GmbH & Co. KG Apparatus for the treatment of textile fabric web

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796471A (en) * 1971-12-03 1974-03-12 Riggs & Lombard Inc Corrosion resistant roll & bearing assembly
JPS5319086U (en) * 1976-07-24 1978-02-18
US5954880A (en) * 1993-11-05 1999-09-21 Nsk Ltd. Roller support device in molten metal plating bath
EP1353003A2 (en) * 2002-04-10 2003-10-15 Eduard Küsters Maschinenfabrik GmbH & Co. KG Apparatus for the treatment of textile fabric web

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