CN2656706Y - Rotating cup bearing capable of reducing axial running in air flow spinning machine - Google Patents

Abstract

This utility model is a rotary cup bearing in a rotor spinner which can relieve axial float. Any small deviation of a mandrel in rotation can be regulated to the center by an axial positioning magnet in the mandrel, which avoids damages resulting from intense friction and pressure between a rolling body and a container and prolongs service life of the bearing. The utility model includes an outer ring and a mandrel. The two ends of the outer ring are respectively provided with a seal cover, the center of which is provided with a hole perforated by the mandrel. In the outer ring, the mandrel is coated with the container, which is provided with the rolling body. The periphery of the mandrel is provided with a positioning apparatus of the mandrel. The utility model is characterized in that: the positioning apparatus is at an end of the bearing; the inner wall of the outer ring is provided with an annular surface which extends to an end part of the bearing; the mandrel is successively coated with an inner seal cover and at least three axial positioning magnets with a same polarity between the adjacent two surfaces.

Description

Can alleviate the rotor bearing of axial float in the Rotor spinning frames

(1) technical field

The utility model relates to the accessory of spinning machinery, is specially the rotor bearing that can alleviate axial float in the Rotor spinning frames.

(2) background technique

Have its structure of rotor bearing now as shown in Figure 1: it comprises outer ring 2, mandrel 1, the two ends of outer ring 2 are packaged with sealing cover 5 respectively, the center of sealing cover 5 is porose, mandrel 1 passes the center hole of sealing cover 5 respectively, and 2 the inside in the outer ring is respectively installed with retainer 4 on mandrel 1, retainer 4 is equipped with rolling element 3, after rotor bearing was installed on Spinning Machinery, the left end end of mandrel 1 was set with revolving cup, and spinning is just carried out therein.The belt of driven by motor is pressed in the top of the right-hand member circumferential surface of mandrel 1 by two pinch rollers, during machine works, belt by and mandrel between friction drive mandrel and rotate, the revolving cup of mandrel left end end also and then rotates, thereby realizes the function of spinning.The shortcoming of this bearing is exactly mandrel 1 a no axially locating, frictional force direction during owing to belt transmission between belt and the mandrel can change along with both contact position minor alterations, like this along mandrel axially, just have the friction component of belt to mandrel, mandrel will play, like this rolling element 3 will and bearing outer ring 2 between friction even extruding take place, during the bearing long-term work, it is very fast to wear and tear between rolling element 3 and the bearing outer ring 2, and the working life of bearing is shorter.

(3) summary of the invention

At existing rotor bearing, its mandrel does not have axially locating, be easy to generate axial float, the shortcoming that the working life of bearing is short, the utility model provides another rotor bearing, the amplitude of mandrel axial float is low during its work, and friction and extruding degree between the rolling element of bearing and the outer ring of bearing are lower, and the working life of bearing is longer.

The technical solution of the utility model is: it comprises outer ring, mandrel, oiling annular groove on the circumferential surface of outer ring and compress that correspondence is pressed with oiling ring and hold-down ring in the annular groove, have tank filler sleeve in the oiling annular groove, the two ends of outer ring are packaged with sealing cover and check ring respectively, the center of sealing cover is porose, and described mandrel passes the center hole of described sealing cover respectively; In the outer ring, be set with retainer on the mandrel, rolling element is installed on the retainer, the peripheral equipment of mandrel is equipped with the positioning device of mandrel, it is characterized in that: described positioning device is exactly the end at described bearing, and the inwall of outer ring has a toroidal surface, and this toroidal surface is to the end of an end of described bearing, sealing cover and at least 3 blocks of axially locating magnet in being set with successively on the mandrel, the polarity of adjacent two faces is identical between the magnet.

It is further characterized in that: described axially locating magnet has three, is ring, wherein in the middle of magnet and mandrel be connected, the magnet on both sides and the inwall of outer ring are connected, between the magnet on middle magnet and both sides along the mandrel direction apart from equating; Described positioning device is exactly the other end at described bearing, the inwall of outer ring has a toroidal surface, be pressed with interior sealing cover on this toroidal surface, sealing cover is to the end of the other end of described bearing in described, the periphery of mandrel and the inwall of outer ring are separately installed with magnet, the polarity of adjacent two faces guarantees that the suffered magnetic force of magnet of the mandrel periphery described magnet of making a concerted effort to make progress has 3 between the magnet, middle magnet is ring, be set in mandrel, two magnet are circular arc up and down in addition, be connected with the inwall of described outer ring and respectively along the vertical plane symmetry of crossing axle diameter, the polarity of middle its outer surface of magnet is opposite with the polarity of the lower surface of top magnet, and is identical with the polarity of the upper surface of following magnet; Described rolling element is made with stupalith.

After the utility model adopts above-mentioned positioning device, mandrel has skew slightly in rotating process, along mandrel axially, both sides magnet changes immediately to the active force of middle magnet, the can regulate mandrel is placed in the middle automatically, thereby the damage of having avoided high-intensity friction between rolling element and the retainer and extruding and having caused, the working life of having improved bearing.Along mandrel radially, magnet produces power upwards to mandrel, can the balance belt drive and give the mandrel applied pressure when mandrel rotates, thereby the extruding that the rolling element that is positioned at the mandrel bottom that can alleviate the sinking of mandrel pressurized and cause is subjected to, the wearing and tearing of this place's rolling element and this outer ring, place have been alleviated, the working life of further having improved bearing

(4) description of drawings

Fig. 1 is the structural representation of existing rotor bearing;

Fig. 2 is a sectional view of the present utility model;

Fig. 3 be among Fig. 2 C-C to amplification view.

(5) embodiment

See Fig. 2, the utility model comprises outer ring 2, mandrel 1, the oiling annular groove of the outer surface of outer ring 2 and compress that correspondence is equipped with oiling ring 3 and hold-down ring 5 in the annular groove, have tank filler sleeve 4 in the oiling annular groove, the two ends of outer ring are packaged with sealing cover 11,12 and check ring 9 respectively, the center of sealing cover 11,12 is porose respectively, and mandrel 1 passes the center hole of sealing cover 11,12 respectively; In outer ring 2, be set with retainer 6 on the mandrel 1, retainer 6 has two among Fig. 2, and totally 7 of rolling elements 14 (not drawing 7 among Fig. 2) are installed on the retainer 6, and rolling element 14 can be made with steel, stupalith.At an end of bearing, among Fig. 2 the left end of bearing, the inwall of outer ring 2 has a toroidal surface, and this toroidal surface is set with interior sealing cover 15 and axially locating magnet 16,17,18 successively to the left part of bearing on the mandrel 1; Three blocks of magnet all are ring; Magnet 17 is connected with mandrel 1, the inwall of magnet 16,18 and outer ring 2 is connected, magnet 17 all equates with magnet 16,18 distances along the mandrel direction, and the polarity of magnet 17 two faces about it polarity with the face that is adjacent of magnet 16,18 respectively is identical.At the other end of bearing, the inwall of outer ring 2 has a toroidal surface, sealing cover 10 in being pressed with on this toroidal surface, interior sealing cover 10 is to the right-hand member end of bearing, 3 blocks of magnet 8,7,13 are installed between mandrel 1 and the outer ring 2, see Fig. 3, magnet 8 is ring, is set in mandrel 1; Magnet 7,13 is circular arc and is connected with the inwall of outer ring 2, and respectively along the vertical plane symmetry of crossing axle diameter, the polarity of the outer surface of magnet 8 is opposite with the polarity of the lower surface of magnet 7, and is identical with the polarity of the upper surface of magnet 13.Certainly the inwall of outer ring 2 also can be installed one or more magnet, if guarantee magnet 8 suffered magnetic force make a concerted effort upwards can the utility model to be installed on Spinning Machinery the time, the end that has radial magnet that belt is installed on mandrel is the right-hand member among Fig. 2.During running in bearings on frock with overcoat 2, mandrel 1, retainer 6 and rolling element 14 install, mounting process belongs to prior art, Spielpassung between rolling element 14 and outer ring 2 and the mandrel 1, the gap is 0.015mm, also be Spielpassung between retainer 6 and the mandrel 1, the gap is 0.15mm, guarantee that mandrel 1 rotates flexibly, interior sealing cover 15 is set in mandrel 1 from the left end of mandrel, and be pushed on the ring wall of outer ring 2, then with magnet 16 sealing cover 15 in the inwall of outer ring 2 is pushed into, in the outer ring 2 with magnet 16 jointing places, inject high-intensity Bond, this Bond belongs to the market existing procucts, and for example the trade mark of Tianshan New Material Tech. Co., Beijing production is for can match new 1609 cylindrical part fixing agent.Then magnet 17,18 is enclosed within on the mandrel 1 successively, promotes magnet 18 and arrive prepositions until magnet 17, fine setting magnet 18 makes magnet 17 equate respectively with distance between the magnet 16,18.The polarity of about 17 two faces of the magnet polarity with the face adjacent with magnet 17 of magnet 16,18 respectively is identical, to bond between magnet 17 and mandrel 1, magnet 18 and the outer ring 2 with high-intensity Bond equally, the spacing that 0.75mm is arranged between magnet 16,18 and the mandrel 1, the spacing that 0.5mm is arranged between magnet 17 and the outer ring 2, certainly, three blocks of magnet also can have other substep mode, for example magnet 16,18 and mandrel 1 bonding, magnet 17 and outer ring 2 bondings can play the axially locating effect equally.Right-hand member at bearing, interior sealing cover 10 is set in mandrel 1, and be pushed on the ring wall in the outer ring 2, be set in mandrel 1 on and along mandrel be pushed in sealing cover 10 from the right-hand member of mandrel copper sheathing, with magnet 7,13 along the outer ring sealing cover 10 in 2 inwall is pushed into, in the outer ring 2 with magnet 7,13 jointing place, inject high-intensity Bond, take copper sheathing away, magnet 8 is set in mandrel 1, make magnet 8 and magnet 7 along mandrel 1 propelling, align respectively in 13 right side, magnet 8 and magnet 7, radial spacing between 13 is respectively 0.4～0.5mm, in the jointing place of mandrel 1 with magnet 8, inject high-intensity Bond, at last sealing cover 12 is installed respectively at the two ends of bearing, 11, at the outside of sealing cover 11 mounting spring back-up ring 9, bearing has just assembled like this.

Claims (6)

1, can alleviate the rotor bearing of axial float in the Rotor spinning frames, it comprises outer ring, mandrel, oiling annular groove on the circumferential surface of outer ring and compress that correspondence is pressed with oiling ring and hold-down ring in the annular groove, have tank filler sleeve in the oiling annular groove, the two ends of outer ring are packaged with sealing cover and check ring respectively, the center of sealing cover is porose, and described mandrel passes the center hole of described sealing cover respectively; In the outer ring, be set with retainer on the mandrel, rolling element is installed on the retainer, the peripheral equipment of mandrel is equipped with the positioning device of mandrel, it is characterized in that: described positioning device is exactly the end at described bearing, and the inwall of outer ring has a toroidal surface, and this toroidal surface is to the end of an end of described bearing, sealing cover and at least 3 blocks of axially locating magnet in being set with successively on the mandrel, the polarity of adjacent two faces is identical between the magnet.

2, can alleviate the rotor bearing of axial float in the Rotor spinning frames according to claim 1, it is characterized in that described axially locating magnet has three, described 3 blocks of axially locating magnet are ring.

3, can alleviate the rotor bearing of axial float in the Rotor spinning frames according to claim 2, it is characterized in that described 3 circular ring magnets, magnet and mandrel are connected wherein, the magnet on both sides and the inwall of outer ring are connected, and equate along mandrel direction distance between the magnet on middle magnet and both sides.

4, can alleviate the rotor bearing of axial float in the Rotor spinning frames according to claim 1, it is characterized in that: described positioning device is exactly the other end at described bearing, the inwall of outer ring has a toroidal surface, be pressed with interior sealing cover on this toroidal surface, sealing cover is to the end of the other end of described bearing in described, the periphery of mandrel and the inwall of outer ring are separately installed with magnet, and the polarity of adjacent two faces guarantees making a concerted effort upwards of magnetic force that the magnet of mandrel periphery is suffered between the magnet

5, can alleviate the rotor bearing of axial float in the Rotor spinning frames according to claim 4, it is characterized in that: described magnet has 3, and middle magnet is ring, is set in mandrel; Up and down two magnet are circular arc, are connected with the inwall of described outer ring and the vertical plane symmetry of edge mistake axle diameter respectively in addition, and the polarity of middle its outer surface of magnet is opposite with the polarity of the lower surface of top magnet, and are identical with the polarity of the upper surface of following magnet.

6, can alleviate the rotor bearing of axial float in the Rotor spinning frames according to claim 1, it is characterized in that described rolling element makes with stupalith.

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