CN2771245Y

CN2771245Y - Dial rotating mechanism for reversible knitting circular machine

Info

Publication number: CN2771245Y
Application number: CN 200420098806
Authority: CN
Inventors: 王来成
Original assignee: FUJIAN QUANZHOU AOTU PRECISION MACHINE Co Ltd
Current assignee: FUJIAN QUANZHOU AOTU PRECISION MACHINE Co Ltd
Priority date: 2004-11-11
Filing date: 2004-11-11
Publication date: 2006-04-12
Anticipated expiration: 2014-11-11

Abstract

The utility model relates to a needle disk rotating mechanism for a double-surface knitting disk machine, which comprises a central shaft and a sleeve barrel, wherein the central shaft is supported in the sleeve barrel through a thrust ball bearing and a cylindrical roller bearing; axial force and radial force of a conical roller bearing, which are simultaneously borne, are separated so as to enable the thrust ball bearing to bear the axial force and enable the cylindrical roller bearing to bear the radial force. Simultaneously, the installing locating mode of the central shaft is changed; bearings are locked tightly in the sleeve barrel along an axial direction through fastening pieces from the lower part of the central shaft so as to enable the central shaft to press tightly the bearings through self weight from the upper part of the central shaft, and exerted axial pre-tightening force can be further reduced when the bearings are tightly locked. Because of using the structure, the axial pre-tightening force which the bearings are borne can be reasonably allocated; the utility model prolongs service life of the bearings, not only eliminates the effect of the axial pre-tightening force on the performance of the needle disk rotating mechanism, but also nicely ensures the parallelism and the proper alignment of a needle disk and the synchronous rotation of the needle disk and a needle cylinder, and improves the working accuracy, the stability and the work efficiency of a machine table.

Description

The dials rotating mechanism of double knit multigraph press

Technical field

The utility model relates to a kind of dials rotating mechanism of double knit multigraph press.

Background technology

As shown in Figure 1, in the dials rotating mechanism of traditional double knit multigraph press, dials is installed in central shaft (stem mandrel) 11, and central shaft 11 is taked taper roll bearing 12 to be bearing in the sleeve 13 and be connected with power drive mechanism to carry out transmission.In central shaft 11 work, produce swing, levelness, concentricity and the dials and the syringe that guarantee dials rotate synchronously, must vertically taper roll bearing 12 be locked in the sleeve 13 by securing member 14, make taper roll bearing 12 bear bigger axial pre tightening force like this.When locking, control the influence that drive disk assembly expands with heat and contract with cold in improper or the work, be easy to cause axial pre tightening force excessive, thereby be damaged the normal working clearance of bearing, shorten bearing service life greatly, influence the performance of dials rotating mechanism, reduced operating accuracy, stability and the operating efficiency of board.

Summary of the invention

The purpose of this utility model is the shortcoming at said structure, and a kind of dials rotating mechanism of double knit multigraph press is provided, and avoids axial pre tightening force to dials rotating mechanism Effect on Performance.

For achieving the above object, the dials rotating mechanism of the double knit multigraph press that the utility model provides comprises central shaft and sleeve, and central shaft is bearing in the sleeve by thrust ball bearing and cylinder roller bearing.

As further improvement, by securing member from the central shaft bottom vertically with described bearing locking sleeve.

Compared with prior art, the dials rotating mechanism of the double knit multigraph press that the utility model provides has following characteristics: (1) adopts thrust ball bearing and cylinder roller bearing to replace original taper roll bearing, axial force and radial load that taper roll bearing bears are simultaneously separated, allow thrust ball bearing bear axial force, the cylinder roller bearing bearing radial force.(2) the installation locate mode of change central shaft: bearing was tightly changed into from the locking of central shaft bottom from the central shaft upper lock originally, make central shaft utilize its deadweight to compress bearing from top, the axial pre tightening force that applies when further reducing to lock.

Owing to adopted said structure, the axial pre tightening force reasonable distribution that bearing is born, prolonged the service life of bearing greatly, both eliminated axial pre tightening force to dials rotating mechanism Effect on Performance, the depth of parallelism, axiality and the dials and the syringe that guarantee dials again well rotate synchronously, have improved operating accuracy, stability and the operating efficiency of board.

Description of drawings

Fig. 1 is the structural representation of the dials rotating mechanism of existing double knit multigraph press.

Fig. 2 is the structural representation of the dials rotating mechanism of the double knit multigraph press that provides of the utility model.

The specific embodiment

As shown in Figure 2, the dials rotating mechanism of double knit multigraph press comprises central shaft 21 and sleeve 22.In the utility model, mainly existing structure has been done the improvement of following two aspects:

(1) central shaft 21 is bearing in the sleeve 22 by a pair of thrust ball bearing 23 and a pair of cylinder roller bearing 24.Adopt thrust ball bearing 23 and cylinder roller bearing 24 to replace original taper roll bearing 12, axial force and radial load that taper roll bearing 12 bears are simultaneously separated, allow thrust ball bearing 23 bear axial force, cylinder roller bearing 24 bearing radial forces.

(2) change the installation locate mode of central shaft, bearing was tightly changed into from the central shaft bottom from the central shaft upper lock originally lock.

As shown in Figure 1, in original mounting means, the stage portion 111 of central shaft 11 is positioned at sleeve 13 belows, vertically taper roll bearing 12 is locked at the sleeve 13 from central shaft top by securing member 14, adopt this mounting means, owing to must bear the central shaft own wt, need apply bigger axial pre tightening force during locking.

And the mounting means that adopts the utility model to design, the stage portion 211 of central shaft 21 is positioned at sleeve 22 tops, deadweight by central shaft 21 makes stage portion 211 compress superposed thrust ball bearing 23, cylinder roller bearing 24, be locked at taper roll bearing 12 sleeve 13 vertically from central shaft 21 bottoms by securing member 25 this moment again, only need apply very little axial pre tightening force.

Because the utility model has carried out above-mentioned improvement, the axial pre tightening force reasonable distribution that bearing is born, prolonged the service life of bearing greatly, both eliminated axial pre tightening force to dials rotating mechanism Effect on Performance, the depth of parallelism, axiality and the dials and the syringe that guarantee dials again well rotate synchronously, have improved operating accuracy, stability and the operating efficiency of board.

Claims

1, the dials rotating mechanism of double knit multigraph press comprises central shaft and sleeve, it is characterized in that: central shaft is bearing in the sleeve by thrust ball bearing and cylinder roller bearing.

2, the dials rotating mechanism of double knit multigraph press according to claim 1 is characterized in that: by securing member from the central shaft bottom vertically with described bearing locking sleeve.