CN2483407Y - Stepless let-off mechanism - Google Patents

Abstract

Disclosed is an infinitive let-off mechanism relating to the textile machine, mainly including a variable speed transmission device, an on-off device and a tension control device, characterized in that one end of the driving roll axis in the variable speed transmission device is connected with the on-off device and the other end is connected with the tension control device. The advantage is the constant of the let-off quantity to reach the same quantity with the usage, and can adjust continuously, infinitively and convenient base on the elastic of the fabric requirements, the quality of the fabric is higher.

Description

Stepless let-off mechanism

The utility model belongs to textile machine, particularly warp-feeding mechanism in the warp knitting machine.

At present, the warp-feeding mechanism of warp knitting machine can be divided into the positive warp let-off and the passive warp let-off two big classes according to warp let-off mode, actively the warp let-off can reach required even warp run-in by the mutual different apolegamy of travelling gear, this apolegamy mode biggest advantage is not need warping process, owing to reduce operation, the corresponding production cost that reduced.But maximum shortcoming is an apolegamy gear difficulty, because the apolegamy of gear each time can not be stepless, so it is consistent with using through measuring of fabric to be difficult to reach warp run-in, and, can not adjust easily according to the desired elasticity of Fabric Design.Because warp let-off adjustment is difficulty, needs operating personnel that rich practice experience is arranged during adjustment, adjustment will just can be finished by test repeatedly.This positive warp let-off mode that level is arranged can only the constant speed warp let-off, can't satisfy the required technological requirement of modern fabrics.Another kind of passive warp let-off mode, it is to regulate warp run-in by the tension force of yarn, its advantage is easy to adjust, can carry out stepless fine setting, its shortcoming is to change with the variation through the straight warp of reel head through line tension in process of production, must frequently adjust, and influence fabric quality,, strengthen production cost so must increase warping process, because, can only finely tune, so, through reel head size certain limitation is arranged to being subjected to, being subjected to can not be too big through the reel head, makes the limited length of fabric, influences output; Coiled hair is changed the loading and unloading difficulty, repeats to pass, and workload is big, influences output, wastes raw material.

The purpose of this utility model provides a kind of warp-feeding mechanism, is that to have warp run-in constant, reliable, and it is consistent that warp run-in and fabric are used through measuring, and requires and can carry out stepless adjustment to warp run-in easily according to the degree of tightness of fabric.

The technical scheme that realizes the utility model purpose is, it is mainly by variable speed drive, arrangement of clutch, tenslator constitutes, it is characterized in that: on the active roller in variable speed drive coaxial, one end attaching arrangement of clutch, other end attaching tenslator.

Variable speed drive in the utility model is the let-off motion that belongs to positive warp let-off mode, in order to reach Stepless let-off, so tenslator in the attaching on the active roller shaft in variable speed drive, and tenslator is the main member in the passive let-off motion, and the coupling by clutch make initiatively roller evenly running to reach warp run-in constant, and by the tension adjustment spring in the controller that rises, the adjustment of tonicity size reaches the required degree of tightness requirement of fabric easily.Therefore, great advantage of the present utility model is that warp run-in is constant, it is consistent that warp run-in and fabric are used through measuring, and fabric quality is reliable, need not carry out warping process, reduced cost, simultaneously, adopt stepless, tension adjustment control easily, satisfy the different degree of tightness requirements of fabric, make fabric have more personalization, also satisfy the different designs requirement of modern fabrics.

Below in conjunction with drawings and Examples the utility model is further described.

Accompanying drawing 1 is the front elevational schematic of Stepless let-off mechanism.

Accompanying drawing 2 is that schematic diagram is looked on a Stepless let-off mechanism left side.

Referring to Fig. 1, Fig. 2, wherein variable speed drive 1 is the variable speed drive in the positive warp let-off mode commonly used, its structure is that main shaft 1-1 gives sprocket wheel 1-3 through axle upper sprocket wheel 1-2 transmission, and through in-line gears 1-4 and gear 1-5 engagement, the in-line gears 1-6 engagement carrier gear 1-7 coaxial with gear 1-5, carrier gear 1-7 engagement change gear 1-8, with the coaxial sprocket wheel 1-9 of change gear by chain drive sprocket wheel 1-10, initiatively roller 1-12 is housed on the axle of sprocket wheel 1-10, end at active roller 1-12 is equipped with arrangement of clutch 2, the other end is equipped with the sprocket wheel 3-18 in the tenslator 3, gear 1-11 and gear 1-13, gear 1-14 engagement, coaxial roller 1-15 is housed on gear 1-13, coaxial roller 1-16 is housed on gear 1-14.Arrangement of clutch 2, it has driving disc spacing pressing 2-2, driven friction disk 2-1, between driving disc spacing pressing 2-2 and driven friction disk 2-1, friction plate 2-5 is arranged, friction plate 2-5 is fixed on the driving disc spacing pressing 2-2, driving disc spacing pressing 2-2 is fixedlyed connected with the sprocket wheel 1-10 in the variable speed drive 1, spring 1-3 and handwheel 1-4 are housed on one side of sprocket wheel 1-10, and the pressure of the rotation regulating spring 1-3 by handwheel 1-4 is regulated the frictional force size between frictional disk and the driving disc spacing pressing 2-2.At the other end of active roller 1-12 axle sprocket wheel 3-18 in the tenslator 3 is housed, it has tension rail support 3-1 tenslator 3, on tension rail support 3-1, tension rail 3-2 is housed, jacking block 3-8 is housed on tension rail 3-2, tension force sprocket wheel 3-5, and be connected with tension spring 3-6 one end with chain, the other end of tension spring 3-6 is connected with screw suspension hook 3-7, tension piece 3-3 is fixed on the tension rail 3-2,3-4 is connected with the guide cap, jacking block 3-2 connects top screw 3-9, top screw 3-9 goes up and connects slide bar 3-10, and slide bar 3-10 inserts conduit 3-12, and conduit 3-12 is fixed on the catheter block 3-11, on the other end of slide bar 3-10, fixedly get joint chair 3-14, be connected spring 3-13 at catheter block 3-11 between the joint chair 3-14 with getting, holddown belt 3-15 is fixed on and gets on the joint chair 3-14, and cover is pressed on the holddown belt wheel 3-16, sprocket wheel 3-17 is housed compressing on belt wheel 3-16 coaxial, the coaxial sprocket wheel 3-18 of roller 1-12 is connected with being contained in initiatively with chain.

Operation principle of the present utility model is: warp thread is by the roller 1-15 in the variable speed drive, active roller 1-12, guide cap 3-2 in roller 1-14 and the tenslator 3 is to warp knitting machine, when warp knitting machine is worked, variable speed drive and main shaft rotate synchronously, the warp thread tension, tension force increases and is pressed on the guide cap 3-4, when warp tension reaches setting value (size of setting value is determined by the tension force of screw suspension hook 3-7 adjustment of tonicity spring 3-6), it is the center of circle that guide cap 3-4 does with tension rail 3-2, tension piece 3-3 is clockwise rotating of half warp, the jacking block 3-8 that clockwise rotates and drive that drives tension rail 3-2 simultaneously rotates, top screw 3-9 is moved up, move on the slide bar 3-10, holddown belt 3-15 is unclamped, braking belt wheel 3-16 can freely be rotated, sprocket wheel 3-17, sprocket wheel 3-18 can freely rotate, at this moment, because variable speed drive is in running, driving sprocket wheel 1-10 rotates, and the driving disc spacing pressing 2-2 that drives in the arrangement of clutch 2 rotates, and driven friction disk 2-1 is rotated by friction plate 2-5 friction coupling, and initiatively roller 1-12 rotation of drive, also drive roller 1-13, roller 1-14 rotates and reaches warp let-off line purpose, when through line tension less than when setting value, the opposite direction running is done in above-mentioned action, holddown belt 3-15 is tightened up, push down braking belt wheel 3-16, braking belt wheel 3-16 can not be rotated, thereby sprocket wheel 3-17,3-18 can not rotate, active roller 1-12 can not be rotated, the not warp let-off, at this moment the driving disc spacing pressing 2-2 in the arrangement of clutch rotates, driven friction disk 2-1 does not rotate, skidding occurs, circulation reaches and stablizes warp let-off purpose so repeatedly.Because the tension force of control warp makes warp run-in reach consistent fully with using through amount, warp run-in is constant reliably, and the quality of fabric is higher.In addition, according to the requirement of fabric degree of tightness, can conveniently carry out tension adjustment by screw suspension hook 3-7, practical operation is very convenient, and such adjusting is again step-less adjustment, reaches the designing requirement of fabric easily.If, when fabric need adopt positive warp let-off mode, as long as the screw 2-6 on the driving disc spacing pressing 2-2 on the arrangement of clutch 2 is screwed among the clutch plate 2-1, the while is unclamped the spring 3-13 in the tenslator 3, makes that arrangement of clutch 2 and tenslator 3 are ineffective just to become positive warp let-off mode.

Claims (1)

1, a kind of Stepless let-off mechanism, it mainly contains variable speed drive (1), arrangement of clutch (2), tenslator (3) constitutes, it is characterized in that: on the active roller (1-12) in variable speed drive (1) coaxial, one end attaching arrangement of clutch (2), other end attaching tenslator (3).

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