WO2016173456A1 - 导丝辊 - Google Patents

导丝辊 Download PDF

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Publication number
WO2016173456A1
WO2016173456A1 PCT/CN2016/079942 CN2016079942W WO2016173456A1 WO 2016173456 A1 WO2016173456 A1 WO 2016173456A1 CN 2016079942 W CN2016079942 W CN 2016079942W WO 2016173456 A1 WO2016173456 A1 WO 2016173456A1
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WO
WIPO (PCT)
Prior art keywords
bearing
sleeve
bushing
shaft
bolt
Prior art date
Application number
PCT/CN2016/079942
Other languages
English (en)
French (fr)
Inventor
段耀凯
Original Assignee
舍弗勒技术股份两合公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 舍弗勒技术股份两合公司 filed Critical 舍弗勒技术股份两合公司
Priority to EP16785887.7A priority Critical patent/EP3290552B1/de
Publication of WO2016173456A1 publication Critical patent/WO2016173456A1/zh

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/02—Roller arrangements not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/14—Pulleys, rollers, or rotary bars
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • 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 invention relates to the technical field of textile equipment, in particular to a godet roller.
  • two bearings 103 are mounted between the shaft 106 and the bushing 102, and the bearing 103 is, for example, a ball bearing. .
  • the bearing 103 is, for example, a ball bearing.
  • Cover 101 and seal ring 104 are mounted in the slots of bushing 102, respectively.
  • the connecting sleeve 105 is mounted on the shaft 106 by an interference fit.
  • the cover 101 can be made of plastic and the seal ring 104 can be made of steel.
  • a yarn is wound around the outer peripheral surface of the bushing 102.
  • the bushing 102 rotates circumferentially by itself under the drive of the yarn. Since the bushing 102 and the outer ring of the bearing 103 have an interference fit, the outer ring of the bearing 103 is rotated by the bushing 102.
  • the shaft 106 and the connecting sleeve 105 are stationary, and the inner ring of the bearing 103 does not rotate with the bushing 102 due to the interference fit between the shaft 106 and the inner ring of the bearing 103.
  • Disadvantages of the prior art described above include: a) the outer ring of the bearing is rotated, so that when reliability is considered, the design of the bearing shield will become complicated and/or the life of the guard will be shortened. Two complex and expensive sealing components need to be designed. b) Bearings are not easily replaced after damage. In order to improve the life of the bearing, it is usually necessary to refill the base oil of the grease after one year. This means the end The extra cost of the end user. c) If the bearing is damaged, usually the entire part will be useless and the bushing cannot be reused. This means waste and disadvantage to the environment.
  • the present invention overcomes at least one of the above technical problems and/or other prior art, and provides a godet roller capable of achieving at least one of the following objects and/or other purposes: a) a simple structure; b) easy to install and / or disassemble (for example, easy to push the components including the bearing in and out); c) the inner ring of the bearing rotates; d) easy to repair and / or replace; e) parts are not easily damaged and / or can be reused.
  • a godet roller comprising: a tubular bushing rotatable by an external yarn; a shaft fixed with respect to rotation of the bushing; and a bearing disposed inside the bushing,
  • the godet roller further includes a coupling sleeve and a connecting member coupled to the inner surface of the bushing in a manner rotatable with the bushing, the connecting sleeve, the bearing and the shaft along the
  • the axial arrangement of the bushing is such that the connecting sleeve and the shaft are respectively located on opposite sides of the bearing in the axial direction, and the connecting member passes through the inner ring of the bearing and is detachable from the connecting sleeve
  • the outer ring of the bearing is coupled to the shaft so that the connecting member can be connected via the shaft in a state where the connecting member and the connecting sleeve are not yet connected or disconnected At least a portion and the bearing are axially inserted or removed from the bushing.
  • the connecting member includes a bolt and a nut screwed to the bolt, the nut being located on a side of the bolt away from the shaft in an axial direction of the bearing, the connecting sleeve and the connecting sleeve There is a clearance fit between the bolts.
  • the godet further comprises a sleeve, the sleeve being mounted on the bushing and the bearing Between the outer rings, the outer ring of the bearing is coupled to the shaft via the sleeve.
  • the inner surface of the sleeve is provided with a groove to which the snap ring is mounted and which is located on the side of the bearing remote from the shaft in the axial direction of the bearing.
  • the sleeve is in a clearance fit with the outer ring of the bearing.
  • the sleeve is in an interference fit with the outer ring of the bearing.
  • the bolt and the nut abut the coupling sleeve and the inner ring of the bearing in the axial direction of the bearing.
  • an interference fit is provided between the bushing and the connecting sleeve, and an interference fit is formed between the inner ring of the bearing and the bolt.
  • the coupling sleeve includes a circular plate portion and an annular portion that protrudes in the axial direction at a radially inner portion of the circular plate portion, the annular portion abutting against the inner ring of the bearing.
  • the connecting sleeve further comprises a plurality of radially extending ribs disposed on the circular plate portion.
  • the present invention has at least one of the following advantages over the prior art and products.
  • the godet roller according to the invention is easy to disassemble and maintain, especially after the bearing is damaged, the connecting member and the bearing are easily taken out and replaced together, thereby avoiding the scrapping of the entire godet roller due to inconvenient replacement of the bearing, thereby saving production. cost.
  • the inner ring of the bearing of the godet roller rotates while the outer ring of the bearing does not rotate, thereby facilitating the use of a bearing of a single guard.
  • FIG. 1 is a schematic cross-sectional view of a godet according to an embodiment of the present invention.
  • FIG. 2 is a side of the connecting sleeve in the godet roller near the shaft according to an embodiment of the present invention. Schematic diagram.
  • FIG 3 is a schematic illustration of a side of the coupling sleeve in the godet roller away from the shaft, in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic illustration of a snap ring in a godet in accordance with an embodiment of the present invention.
  • Figure 5 is a schematic cross-sectional view of a prior art godet.
  • an embodiment of the present invention relates to a godet roller comprising: a cylindrical bushing 1 that can be rotated by an external yarn; and a shaft 5 fixed with respect to the rotation of the bushing 1 And a bearing 3 disposed inside the bushing 1, the godet roller further includes a connecting sleeve 2 and a connecting member, and the connecting sleeve 2 is connected to the inner surface of the bushing 1 in a manner capable of following the rotation of the bushing 1, the connecting sleeve 2, the bearing 3 and the shaft 5 is arranged along the axial direction of the bushing 1 such that the connecting sleeve 2 and the shaft 5 are respectively located on opposite sides of the bearing 3 in the axial direction, the connecting member passes through the inner ring of the bearing 3 and is detachably coupled to the connecting sleeve 2 Connected together, the outer ring of the bearing 3 is coupled to the shaft 5 so that at least a portion of the connecting member and the bearing 3 can be axially inserted via the shaft
  • the inner ring of the bush 1, the connecting sleeve 2, the connecting member and the bearing 3 can be rotated together, and the outer ring of the bearing 3 is fixed to the shaft 5. Therefore, when it is necessary to replace the damaged bearing 3, for example, the connecting member can be detached from the connecting sleeve 2 or the fixing between the connecting member and the connecting sleeve 2 can be released, and then the connecting member and the bearing 3 can be pulled out from the bushing 1 together. .
  • the connecting part comprises a bolt 7 and a nut 8 screwed to the bolt 7,
  • the nut 8 is located on the side of the bolt 7 remote from the shaft 5 in the axial direction of the bearing 3, and a gap fit is provided between the coupling sleeve 2 and the bolt 7.
  • the connecting member takes the form of the bolt 7 and the nut 8 so that the structure of the present invention is simple and easy to implement. In use, when the external yarn acts to drive the bushing 1 to rotate, the connecting sleeve 2 is rotated by the bushing 1, and then the bolt 7, the nut 8 and the inner ring of the bearing 3 are rotated by the connecting sleeve 2.
  • the bushing 1, the connecting sleeve 2, the bolt 7, the nut 8, and the inner ring of the bearing 3 rotate together. Since the outer ring of the bearing 3 is connected to the externally fixed shaft 5, the outer ring of the bearing 3 does not rotate with the inner ring of the bush 1, the connecting sleeve 2, the bolt 7, the nut 8, and the bearing 3. Then, for example, the end cap (not shown) of the bushing 1 located on the left side of Fig. 1 can be opened, for example, by loosening the nut 8, so that the bolt 7 and the bearing 3 can be separated from the bushing 1 and the connecting sleeve 2.
  • the clearance fit between the connecting sleeve 2 and the bolt 7 facilitates easier removal of the bolt 7 from the connecting sleeve 2 during maintenance and replacement.
  • the godet further comprises a sleeve 4 mounted between the bushing 1 and the outer ring of the bearing 3, the outer ring of the bearing 3 being connected to the shaft 5 via the sleeve 4.
  • This configuration is particularly suitable for connecting the outer ring of the bearing 3 such that the shaft 5 forms a connection with the outer ring of the bearing 3. It is also possible to facilitate the disengagement of the sleeve 4 from the outer ring of the bearing 3 after the shaft 5, the sleeve 4, the bearing 3 and the bolt 7 have been pulled out together from the bushing 1 in order to replace, for example, a damaged bearing.
  • the inner surface of the sleeve 4 is provided with a groove 9 which is mounted to the groove 9 and which is situated on the side of the bearing 3 remote from the shaft 5 in the axial direction of the bearing 3.
  • the function of the snap ring 6 is to further block and prevent the bearing 3 from pulsing in the axial direction when the godet roller is normally operated, and further can be further abutted against the bearing 3 through the snap ring 6 when the sleeve 4 is pulled out. Make sure that the bearing 3 is removed with the sleeve 4.
  • the snap ring 6 may have a structure as shown in FIG. 4, that is, the snap ring 6 has a substantially C-shaped disk shape.
  • the snap ring 6 can be easily fitted into the recess 9 of the sleeve 4 by compressing the snap ring 6 in the radial direction (the diameter of the snap ring is made smaller), and then releasing the radial compression applied to the snap ring 6 The force causes the snap ring 6 to snap into the groove 9.
  • the radially inner portion of the snap ring 6 abuts axially with the outer ring of the bearing 3, for example, the inner diameter of the snap ring 6 is smaller than the outer diameter of the outer ring of the bearing 3, thereby preventing the outer portion of the bearing 3
  • the circle moves relative to the sleeve 4 to the left end of the figure and can be pulled in the right end of the figure When the shaft 5 is pulled out, the bearing 3 and the bolt 7 are pulled out together.
  • the radially inner end of the snap ring 6 is not in contact with the annular portion 11 of the connecting sleeve 2, which eliminates friction between the two.
  • the sleeve 4 is in a clearance fit with the outer ring of the bearing 3.
  • This embodiment facilitates the connection of the shaft 5 to the outer ring of the bearing 3 via the sleeve 4 and the sleeve 4 and the bearing after the shaft 5, the sleeve 4, the bearing 3 and the bolt 7 are pulled together from the bushing 1
  • the outer ring of 3 is easily detached in order to replace, for example, a damaged bearing.
  • the sleeve 4 is in an interference fit with the outer ring of the bearing 3.
  • this embodiment may require the use of a tool to disengage the outer ring of the bearing 3 from the sleeve 4 after the shaft 5, the sleeve 4, the bearing 3 and the bolt 7 are pulled out together from the bushing 1, it is possible to ensure the sleeve.
  • the cartridge 4 is pulled out integrally with the bearing 3 without the need to provide the snap ring 6, so that at least one object of the invention can be achieved as well.
  • the sleeve 4 is screwed to the shaft 5.
  • the advantage is that the connection between the sleeve 4 and the shaft 5 is firm, the structure is simple, and it is easy to implement.
  • the bolt 7 and the nut 8 abut the connecting sleeve 2 and the inner ring of the bearing 3 in the axial direction of the bearing 3.
  • axially pressing the connecting sleeve 2 with the inner ring of the bearing 3 axial displacement of the bearing 3 and the connecting sleeve 2 is advantageously avoided.
  • the coupling sleeve 2 includes a circular plate portion 10 and an annular portion 11 projecting axially in a radially inner portion of the circular plate portion 10, the annular portion 11 and the inside of the bearing 3.
  • the circle is abutted.
  • the annular portion 11 can better guide the bolt 7 to extend to the bearing 3, and the annular portion 11 abuts against the inner ring of the bearing 3 to further prevent the bearing 3 from being tilted in the axial direction.
  • the annular portion 11 can be brought into contact only with the inner ring of the bearing 3, and not with other parts of the bearing (for example, Protective parts, outer ring) contact. In this way, it is possible to achieve the rotation of the connecting sleeve 2 together with the inner ring of the bearing 3 without hindering the rest of the outer ring or the like.
  • the connecting sleeve 2 further comprises a plurality of radially extending ribs 12 arranged on the circular plate portion 10.
  • the rib 12 can further strengthen the strength of the connecting sleeve 2 and generate an air flow upon rotation to facilitate heat dissipation.
  • the side of the connecting sleeve 2 away from the shaft 5 does not form the annular portion 11 (the annular portion 11 is formed only on one side of the circular plate portion 10). ), and a rib 12 is also provided on the side of the connecting sleeve 2 remote from the shaft 5 (the left side in the drawing).
  • the side of the connecting sleeve 2 remote from the shaft 5 may have any suitable structure that is the same as or different from the side of the connecting sleeve 2 near the shaft 5 (right side in the drawing).
  • the side of the connecting sleeve 2 remote from the shaft 5 may have no ribs 12 and may be formed with a circular portion.
  • the bolt 7, the bearing 3, the sleeve 4, and the shaft 5 can be assembled in advance, and then the entire component is installed in the bore of the bushing 1.
  • the end of the bolt 7 passes through the hole of the connecting sleeve 2, and then the bolt 7 is tightened with a nut 8.
  • the nut 8 can be loosened first, and then the set of bolts 7, the bearing 3, the sleeve 4 and the shaft 5 which are faulty are integrated. And pull out, and put a spare pre-assembled set of bolts 7, bearing 3, sleeve 4 and shaft 5 together, and tighten the nut 8, the replacement work can be completed, so the maintenance operation is convenient and quick. Furthermore, for the bolt 7, the nut 8, the bearing 3, the sleeve 4 and the shaft 5 that have been replaced, the sleeve 4 can be further disengaged from the outer ring of the bearing 3, and then only the damaged bearing 3 can be replaced.
  • the godet roller of the present invention can be rotated by the inner ring of the bearing and the outer ring of the bearing does not rotate, it is advantageous to use a bearing, in particular having a single shield, which can be used in comparison with the prior art.
  • the structure of the bearing guard is simple.
  • the bearing of the godet of the present invention Easy to open and remove, eliminating the need for complex guard design and fueling maintenance.
  • other components can be reused, further saving parts replacement costs.
  • each member is not limited to the above, as long as the functions of the present invention can be realized.
  • the bushing 1 need not be strictly cylindrical, and may have protrusions or grooves between at least one end and/or both ends.
  • the two bearings 3 shown do not have to abut each other and can be spaced apart by a distance (for example by means of a spacer).
  • the left end of the bushing 1 may be provided with a sealing member such as an end cap.
  • the connecting member of the present application is not limited to the combination of the above-described bolt 7 and nut 8.
  • the pin may be inserted into a pre-formed hole in the end (the left end in the drawing) of the bolt 7 (or the pin) extending from the connecting sleeve 2 to fasten the inner sleeve of the connecting sleeve 2 and the bearing 3.
  • the connecting member can also adopt other structures as long as it can fix (e.g., fasten) the inner sleeve of the connecting sleeve 2 and the bearing 3.
  • the ground is moving.
  • Other structures, such as (for the right end of the bolt 7 and/or the left end of the shaft 5) for reducing friction, may be provided between the right end of the bolt 7 and the shaft 5.
  • a coating for reducing friction may be provided between the bushing 1 and the sleeve 4 (on at least one of the surfaces opposite to each other).
  • the number of the bearings 3 is shown in FIG. 1 as two, the number of the bearings 3 is not limited to two, and may be, for example, one, three, four or more according to actual needs.
  • the connecting sleeve 2 can be made of plastic so that the connecting sleeve 2 can be taken out slightly when necessary; the sleeve 4 and the shaft 5 can be made of steel in order to ensure the overall joint strength.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

一种导丝辊，包括：能在外部纱线的带动下转动的筒状的衬套（1）；相对于衬套（1）的转动固定的轴（5）；以及设置于衬套（1）内部的轴承（3），还包括连接套（2）和连接部件，连接套（2）以能够跟随衬套（1）转动的方式连接于衬套（1）的内表面，连接套（2）、轴承（3）和轴（5）沿衬套（1）的轴向布置，使得连接套（2）和轴（5）分别位于轴承（3）的轴向上的两相反侧，连接部件穿过轴承（3）的内圈并与连接套（2）能拆卸地连接在一起，轴承（3）的外圈与轴（5）连接在一起，从而在连接部件与连接套（2）尚末连接或解除连接的状态下，能够经由轴（5）将连接部件的至少一部分和轴承（3）沿轴向***或移出衬套（1）。这种导丝辊在轴承损坏后，能使连接部件和轴承一起被抽出并更换，因此避免了因不方便更换轴承而导致的整个导丝辊报废，节省了成本。

Description

导丝辊
相关申请的引用
本发明要求2015年4月29日在中国提交的，名称为“导丝辊”、申请号为201510212717.7的发明专利申请的优先权，该申请的全部内容通过引用并入本文。
技术领域
本发明涉及纺织设备技术领域，特别涉及一种导丝辊。
背景技术
在现有设计的纺织用的导丝辊(thread guidance roller)中，如图5所示，在轴106与衬套102之间安装有两个轴承103，轴承103例如为滚珠轴承(ball bearing)。轴106与轴承103的内圈之间为过盈配合，衬套102与轴承103的外圈之间也为过盈配合。盖101和密封环104分别安装在衬套102的槽内。连接套105通过过盈配合安装在轴106上。盖101可以由塑料制成，密封环104可由钢制成。
衬套102的外周面缠绕有纱线。当使用时，衬套102在纱线的带动下自身周向转动。由于衬套102与轴承103的外圈之间为过盈配合，因此轴承103的外圈在衬套102的带动下转动。轴106和连接套105不动，由于轴106与轴承103的内圈之间为过盈配合，因此轴承103的内圈不随衬套102转动。
上述现有技术的缺点包括：a)轴承的外圈转动，因此当考虑到可靠性时，轴承的防护件(shield)的设计将变复杂和/或防护件的寿命将缩短。需要设计两个复杂且昂贵的密封部件。b)轴承在损坏后不易于更换。为了改善轴承的寿命，通常一年后需要重新填充脂的基油(base oil)。这意味着终 端使用者的额外成本。c)如果轴承损坏，通常整个部件将没有用了，衬套不能被再使用。这意味着浪费和对环境不利。
发明内容
(一)发明要解决的问题
本发明克服了以上技术问题和/或其它现有技术中的至少一个问题，提供了一种导丝辊，其能够实现下述目的和/或其它目的中的至少一者：a)结构简单；b)易于安装和/或拆卸(例如，易于将包括轴承在内的部件整体推入/拉出)；c)轴承的内圈转动；d)便于维修和/或更换；e)部件不易损坏和/或可以重复使用。
(二)用于解决问题的方案
本发明的上述目的可以通过、但不限于以下技术方案实现。
一种导丝辊，其包括：能在外部纱线的带动下转动的筒状的衬套；相对于所述衬套的转动固定的轴；以及设置于所述衬套内部的轴承，所述导丝辊还包括连接套和连接部件，所述连接套以能够跟随所述衬套转动的方式连接于所述衬套的内表面，所述连接套、所述轴承和所述轴沿所述衬套的轴向布置，使得所述连接套和所述轴分别位于所述轴承的轴向上的两相反侧，所述连接部件穿过所述轴承的内圈并与所述连接套能拆卸地连接在一起，所述轴承的外圈与所述轴连接在一起，从而在所述连接部件与所述连接套尚未连接或解除连接的状态下，能够经由所述轴将所述连接部件的至少一部分和所述轴承沿轴向***或移出所述衬套。
优选地，所述连接部件包括螺栓和与所述螺栓螺接的螺母，所述螺母在所述轴承的轴向上位于所述螺栓的远离所述轴的一侧，所述连接套与所述螺栓之间为间隙配合。
优选地，所述导丝辊还包括套筒，所述套筒安装在所述衬套与所述轴承 的外圈之间，所述轴承的外圈经由所述套筒与所述轴连接到一起。
优选地，所述套筒的内表面设置有凹槽，卡接环安装于所述凹槽并且在所述轴承的轴向上位于所述轴承的远离所述轴的一侧。
优选地，所述套筒与所述轴承的外圈之间为间隙配合。
优选地，所述套筒与所述轴承的外圈之间为过盈配合。
优选地，所述螺栓和所述螺母沿所述轴承的轴向使所述连接套和所述轴承的内圈紧靠在一起。
优选地，所述衬套与所述连接套之间为过盈配合，所述轴承的内圈与所述螺栓之间为过盈配合。
优选地，所述连接套包括圆板部和在所述圆板部的径向内侧部分沿轴向突出的圆环部，所述圆环部与所述轴承的内圈抵接。
优选地，所述连接套还包括设置于所述圆板部的多个辐射状延伸的肋。
(三)发明的效果
与现有技术和产品相比，本发明至少具有如下优点之一。
根据本发明的导丝辊易于拆卸维护，尤其是在轴承损坏后，易于将连接部件和轴承一起抽出并更换，因此避免了因不方便更换轴承而导致的整个导丝辊报废，从而节省了生产成本。
根据本发明的导丝辊，导丝辊的轴承的内圈转动而轴承的外圈不转动，因此有利于使用单个防护件的轴承。
无需复杂的防护件设计和加油维护作业。
大部分组成部件可以再利用。
附图说明
图1是根据本发明的一个实施方式的导丝辊的截面示意图。
图2是根据本发明的一个实施方式的导丝辊中的连接套的靠近轴的一侧 的示意图。
图3是根据本发明的一个实施方式的导丝辊中的连接套的远离轴的一侧的示意图。
图4是根据本发明的一个实施方式的导丝辊中的卡接环的示意图。
图5是现有技术的导丝辊的截面示意图。
附图标记说明
1、衬套，2、连接套，3、轴承，4、套筒，5、轴，6、卡接环，7、螺栓，8、螺母，9、凹槽，10、圆板部，11、圆环部，12、肋。
101、盖，102、衬套，103、轴承，104、密封环，105、连接套，106、轴。
具体实施方式
如图1所示，本发明的一个实施方式涉及一种导丝辊，其包括：能在外部纱线的带动下转动的筒状的衬套1；相对于衬套1的转动固定的轴5；以及设置于衬套1内部的轴承3，导丝辊还包括连接套2和连接部件，连接套2以能够跟随衬套1转动的方式连接于衬套1的内表面，连接套2、轴承3和轴5沿衬套1的轴向布置，使得连接套2和轴5分别位于轴承3的轴向上的两相反侧，连接部件穿过轴承3的内圈并与连接套2能拆卸地连接在一起，轴承3的外圈与轴5连接在一起，从而在连接部件与连接套2尚未连接或解除连接的状态下，能够经由轴5将连接部件的至少一部分和轴承3沿轴向***或移出衬套1。
基于以上结构，使得衬套1、连接套2、连接部件和轴承3的内圈能够一起转动，而轴承3的外圈与轴5固定。因此当例如需要更换损坏的轴承3时，可以先将连接部件从连接套2拆卸下来或者说解除连接部件与连接套2之间的固定，然后将连接部件和轴承3一起从衬套1拉出。
根据一个优选的实施方式，连接部件包括螺栓7和与螺栓7螺接的螺母8， 螺母8在轴承3的轴向上位于螺栓7的远离轴5的一侧，连接套2与螺栓7之间为间隙配合。这里，连接部件采用螺栓7和螺母8的形式使得本发明的结构简单、易于实现。在使用时，当外部纱线动作带动衬套1转动时，连接套2在衬套1的带动下转动，然后，螺栓7、螺母8和轴承3的内圈在连接套2的带动下转动。换言之，衬套1、连接套2、螺栓7、螺母8和轴承3的内圈一起转动。由于轴承3的外圈与外部固定的轴5连接，因而轴承3的外圈不随衬套1、连接套2、螺栓7、螺母8和轴承3的内圈转动。那么在例如维护时只需打开位于图1左侧的衬套1的端盖(未示出)，松开螺母8，就能使螺栓7和轴承3从衬套1和连接套2分开。连接套2与螺栓7之间为间隙配合有利于在维护更换时更容易地将螺栓7从连接套2中取出。
根据一个优选实施方式，导丝辊还包括套筒4，套筒4安装在衬套1与轴承3的外圈之间，轴承3的外圈经由套筒4与轴5连接到一起。这种结构特别适合连接轴承3的外圈，使得轴5与轴承3的外圈形成连接。此外还能够便于在轴5、套筒4、轴承3和螺栓7被从衬套1一起拉出后使套筒4与轴承3的外圈脱离，以便更换例如损坏的轴承。
根据一个优选实施方式，套筒4的内表面设置有凹槽9，卡接环6安装于凹槽9并且在轴承3的轴向上位于轴承3的远离轴5的一侧。卡接环6的作用是，在导丝辊正常工作时，能够进一步阻挡和防止轴承3沿轴向窜动，在将套筒4拉出时，通过卡接环6抵靠轴承3，能够进一步确保使轴承3随套筒4一并移出。
在一个示例中，卡接环6可以具有如图4所示的结构，即，卡接环6呈大致C字形的圆板状。通过沿径向压缩卡接环6(使卡接环的直径变小)可以容易地将卡接环6安装到套筒4的凹槽9中，然后释放对卡接环6施加的径向压缩力，使卡接环6卡接于凹槽9中。此外，卡接环6的径向内侧部分与轴承3的外圈在轴向上抵接，例如可使卡接环6的内直径小于轴承3的外圈的外直径，从而防止轴承3的外圈相对于套筒4向图中左端移动，而且可以在向图中右端拉 出轴5时，将轴承3和螺栓7一同拉出。优选地，卡接环6的径向内端不与连接套2的圆环部11接触，这样可以消除二者之间的摩擦。
根据一个优选实施方式，套筒4与轴承3的外圈之间为间隙配合。这个实施方式有利于通过套筒4来使轴5与轴承3的外圈连接，并且在轴5、套筒4、轴承3和螺栓7被从衬套1一起拉出后使套筒4与轴承3的外圈较容易地脱离，以便更换例如损坏的轴承。
根据一个优选实施方式，套筒4与轴承3的外圈之间为过盈配合。虽然该实施方式在轴5、套筒4、轴承3和螺栓7被从衬套1一起拉出后可能需要借助于工具才能使轴承3的外圈与套筒4脱离，但却能够确保将套筒4与轴承3一体拉出而无需设置卡接环6，因而同样能够实现本发明的至少一个目的。
根据一个优选实施方式，套筒4与轴5螺纹连接。其优点是，套筒4与轴5之间连接牢固，结构简单，易于实现。
根据一个优选实施方式，螺栓7和螺母8沿轴承3的轴向使连接套2和轴承3的内圈紧靠在一起。通过使连接套2与轴承3的内圈沿轴向压靠，有利于避免轴承3和连接套2的轴向移位。
根据一个优选实施方式，衬套1与连接套2之间为过盈配合，轴承3的内圈与螺栓7之间为过盈配合。由于在维护更换期间基本上不需要打开或取出连接套2，因而这种设置提升了结构稳固性并更有利于衬套1的转动动作被完全传导至连接套2。另外，螺栓7与轴承3的内圈之间为过盈配合有利于使轴承3的内圈更好地跟随螺栓7的转动而转动。
根据一个优选实施方式，如图2所示，连接套2包括圆板部10和在圆板部10的径向内侧部分沿轴向突出的圆环部11，圆环部11与轴承3的内圈抵接。这里，圆环部11能够更好地引导螺栓7向轴承3延伸，圆环部11与轴承3的内圈抵接能够进一步防止轴承3沿轴向窜动。另外，通过连接套2的这种结构，可以使圆环部11仅与轴承3的内圈接触，而不与轴承的其它部位(例如，防 护件、外圈)接触。这样，既可以实现连接套2与轴承3的内圈的一起转动，又不妨碍外圈等的静止。
根据一个优选实施方式，连接套2还包括设置于圆板部10的多个辐射状延伸的肋12。肋12能够进一步加强连接套2的强度并能在转动时产生气流以有助于散热。
此外，如图3所示，在一个示例中，连接套2的远离轴5的一侧(图中左侧)没有形成圆环部11(圆环部11仅形成于圆板部10的一侧)，并且在连接套2的远离轴5的一侧(图中左侧)也设置有肋12。当然，本发明不限于此。连接套2的远离轴5的一侧(图中左侧)可以具有与连接套2的靠近轴5的一侧(图中右侧)相同或不同的任何适当结构。例如，连接套2的远离轴5的一侧(图中左侧)可以没有肋12，并且可以形成有圆环部。
在实际使用中，例如螺栓7、轴承3、套筒4和轴5能够被预先组装在一起，然后将整个部件安装在衬套1的孔内。螺栓7的端部穿过连接套2的孔，然后用螺母8拧紧螺栓7。
与现有技术相比，如果根据本发明的导丝辊中的轴承3损坏，则可以先松开螺母8，然后将发生故障的一套螺栓7、轴承3、套筒4和轴5整体一并拉出，并将备用的预组装好的一套螺栓7、轴承3、套筒4和轴5整体一并放入，拧紧螺母8，就可以完成更换工作，因此维修操作方便快捷。此外，对于被换下来的螺栓7、螺母8、轴承3、套筒4和轴5，可以进一步将套筒4与轴承3的外圈脱开，然后只更换损坏了的那一个轴承3，这使得本发明的大部分组件(例如，衬套1、螺栓7、螺母8、套筒4和未损坏的轴承)可重复利用。基于以上结构，避免了因不方便更换轴承3而导致的整个导丝辊的报废。
此外，与现有技术相比，由于本发明的导丝辊可以是轴承的内圈转动而轴承的外圈不转动，因此能够有利于使用特别是具有单个防护件(shield)的轴承，可以使轴承的防护件的结构简单化。另外，本发明的导丝辊的轴承 易于被打开和取出，因而无需复杂的防护件设计和加油维护作业。此外，其它部件也都可以再利用，进一步节省了零件更换成本。
本发明不限于上述具体的/优选的结构，本领域技术人员当然可以在本发明的上述教示下作出各种改变、替换等，这些改变、替换包括、但不限于下述方面。
(1)各部件的形状和位置不限于上述情况，只要能够实现本发明的功能即可。
例如，衬套1不必是严格的圆筒状，其至少一个端部和/或两端部之间可以具有凸起或凹槽。图示的两个轴承3也不必相互抵靠，可以(例如，通过间隔件)间隔开一定距离。
(2)虽然图中示未出，但是，衬套1的左端可以设有诸如端盖等密封部件。
(3)本申请的连接部件不限于上述螺栓7和螺母8的组合。例如，销可以***螺栓7(或者说柱销)的从连接套2伸出的一端(图中的左端)中预先形成的孔中，以紧固连接套2和轴承3的内圈。当然，连接部件还可以采用其它结构，只要其可以将连接套2和轴承3的内圈固定(如紧固)到一起即可。
(4)如图1所示，优选地，螺栓7的右端与轴5之间有一小间隙，这样，有助于螺栓7相对于轴5转动，又不会使轴5等在轴向上大幅地窜动。在螺栓7的右端和轴5之间也可以设有其它结构，例如，(螺栓7的右端和/或轴5的左端的)减小摩擦用的涂层、构件。同样地，在衬套1和套筒4之间(二者的彼此相对的表面中的至少一个表面上)可以设有减小摩擦用的涂层。
(5)虽然图1中示出了轴承3的数量为两个，但轴承3的数量不限于两个，例如，根据实际需求还可以是一个、三个、四个或更多个。
(6)连接套2可以由塑料制成，以便在有必要时稍为方便地取出连接套2；套筒4和轴5可以由钢制成，以便确保整体连接强度。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改变等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种导丝辊，其包括：能在外部纱线的带动下转动的筒状的衬套；相对于所述衬套的转动固定的轴；以及设置于所述衬套内部的轴承，
    其特征在于，
    所述导丝辊还包括连接套和连接部件，所述连接套以能够跟随所述衬套转动的方式连接于所述衬套的内表面，所述连接套、所述轴承和所述轴沿所述衬套的轴向布置，使得所述连接套和所述轴分别位于所述轴承的轴向上的两相反侧，所述连接部件穿过所述轴承的内圈并与所述连接套能拆卸地连接在一起，所述轴承的外圈与所述轴连接在一起，从而在所述连接部件与所述连接套尚未连接或解除连接的状态下，能够经由所述轴将所述连接部件的至少一部分和所述轴承沿轴向***或移出所述衬套。
  2. 根据权利要求1所述的导丝辊，其特征在于，所述连接部件包括螺栓和与所述螺栓螺接的螺母，所述螺母在所述轴承的轴向上位于所述螺栓的远离所述轴的一侧，所述连接套与所述螺栓之间为间隙配合。
  3. 根据权利要求1所述的导丝辊，其特征在于，所述导丝辊还包括套筒，所述套筒安装在所述衬套与所述轴承的外圈之间，所述轴承的外圈经由所述套筒与所述轴连接到一起。
  4. 根据权利要求3所述的导丝辊，其特征在于，所述套筒的内表面设置有凹槽，卡接环安装于所述凹槽并且在所述轴承的轴向上位于所述轴承的远离所述轴的一侧。
  5. 根据权利要求4所述的导丝辊，其特征在于，所述套筒与所述轴承的外圈之间为间隙配合。
  6. 根据权利要求3所述的导丝辊，其特征在于，所述套筒与所述轴承的外圈之间为过盈配合。
  7. 根据权利要求2-6中任一项所述的导丝辊，其特征在于，所述螺栓和所述螺母沿所述轴承的轴向使所述连接套和所述轴承的内圈紧靠在一起。
  8. 根据权利要求7所述的导丝辊，其特征在于，所述衬套与所述连接套之间为过盈配合，所述轴承的内圈与所述螺栓之间为过盈配合。
  9. 根据权利要求1-6中任一项所述的导丝辊，其特征在于，所述连接套包括圆板部和在所述圆板部的径向内侧部分沿轴向突出的圆环部，所述圆环部与所述轴承的内圈抵接。
  10. 根据权利要求9所述的导丝辊，其特征在于，所述连接套还包括设置于所述圆板部的多个辐射状延伸的肋。
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