RU114045U1 - MOTAL MECHANISM - Google Patents

Abstract

A winding mechanism containing a spindle for the package drive, a yarn layer, a yarn feeder installed with the possibility of reciprocating movement parallel to the spindle by means of a mechanical transmission kinematically connected to an electric motor, characterized in that the mechanical transmission is made of a chain, and the yarn layer consists of a slot cam connected by means of a rail with multiplier and threading chain.

Description

The utility model relates to textile engineering, in particular to devices for folding in the production of textile packages on winding machines.

A known drive mechanism for moving the strip of a folding device, comprising a hydraulic motor kinematically connected to a drive shaft and having a crane with a control unit connected to a reversible spool, the hydraulic motor is made in the form of a hydraulic cylinder and has a housing mounted with the possibility of linear reciprocating motion relative to a motionless mounted piston with a rod at the same time, on one side of the body a detachable gear rack is rigidly fixed, having the ability to interact with a gear mounted on top of the drive shaft, and on the other hand the housing is rigidly connected along mating surfaces with a base having guides in contact with the support rolling rollers located underneath and connected in pairs, the geometric axis of each of which is eccentric relative to the common rotary axis, and the stationary rod of the hydraulic cylinder is made up of two hollow parts coaxially located relative to the other, each of which is hydraulically at one end connected to the reversing valve by means of pressure or drain lines, and the other end is detachably connected to the stationary piston and simultaneously hydraulically connected to the corresponding cavity of the hydraulic cylinder through radial holes. [one]

The disadvantage of the above analogue is the complexity of the design and the fact that the layout of the thread occurs on a short length of the package.

The closest analogue in technical essence and the achieved effect is a device containing a winding shaft, a rod with thread guides, a controlled electric motor to drive the rod, a microcomputer for controlling the electric motor, a rotation angle sensor of the winding shaft. The rod is pivotally connected to a connecting rod of a crank mechanism kinematically connected to a controlled electric motor. The crank has a length equal to half the length of the package, and rotates in one direction. The crank is made in the form of a disk or gear with holes for changing its length.

The disadvantage of the prototype is that the layout of the thread occurs on a short length of the package. The length of the crank of the device corresponds to half the length of the package and does not exceed 0.2 of the length of the connecting rod; to increase the layout of the thread by a large length of the package, it is necessary to increase the geometric dimensions of the details of the crank to disproportionately large sizes of the winding mechanism.

The technical result of the proposed technical solution is to increase the size of the package in length, the ability to wind a larger volume of thread on the package, the ability to select the kinematic parameters of the winding mechanism.

The indicated result is achieved by the fact that in the winding mechanism device containing a spindle for driving the package, the thread spreader, the thread guide installed with the possibility of reciprocating parallel to the spindle by means of a mechanical transmission kinematically connected with an electric motor, the mechanical transmission is made of a chain, and the thread spreader consists of a groove cam, connected by means of a rail with a multiplier and a thread stacker chain.

The mechanical transmission of the chain allows you to quickly select the kinematic parameters of the winding mechanism by changing the gear ratio, which allows you to reel the thread with different pitch, pattern and volume of winding onto the package, the use of a groove cam in the design of the yarn spreader, connected by a rail with a multiplier and a yarn spreader chain allows the overall dimensions of the device of the winding mechanism can be quickly adjusted by changing the gear ratio of the multiplier length to us otki packing.

The winding mechanism is illustrated by drawings, where in FIG. The kinematic diagram of the winding mechanism is presented.

The winding mechanism comprises a spindle 1 (FIG.), For driving the package 2, a yarn spreader (not shown in the figure), a yarn guide 3 mounted with the possibility of reciprocating movement parallel to the spindle 1 by means of a mechanical transmission 4 kinematically connected to an electric motor 5, mechanical transmission 4 made of chain, and the yarn spreader 3 consists of a groove cam 6 connected by means of a rail 7 with a multiplier 8 and a chain of the yarn spreader 9. The package 2 has a skeleton 10. In the kinematic transmission 11, connecting the electric motor 5 and mechanical transmission 4, pulleys F ₁ , F ₂ , F ₃ , F ₄ are included, mechanical transmission 4 includes gears Z1, Z2, Z3, Z4, gear 8 includes gears Z5, Z6, Z7, the thread stacker includes gears Z8, Z9 and the yarn guide 3 mounted on the yarn spreader chain 9, the groove cam 6 is installed in the groove formed in the wheel mounted on the axis at an angle of about 45 degrees (not shown in the figure).

The winding mechanism works as follows. The rotational movement from the electric motor 5 through a kinematic transmission through the pulleys F ₁ , F ₂ , F ₃ , F ₄ is transmitted to the spindle 1, on which the skeleton 10 of the wound package 2, which is a hole tube in the case of tubular textile filters, is installed. Through the gears Z1, Z2 and Z3, Z4, the rotational movement is transmitted to the wheel of the groove cam 6, which, in turn, moves along the groove of the wheel, transmitting the rotational movement of the wheel to the reciprocating movement of the rack 7. From the rack 7 through the gear Z5 and the wheels Z6 and Z7 of the multiplier 8, the rotation is transmitted to the sprockets Z8 and Z9 of the thread stacker chain 9.

As an example, we give the calculation of the necessary kinematic parameters of the winding mechanism to obtain a package with a thread layout height H = 200 mm (FIG.).

Thread guide movement

where: f _sv - the angle of rotation of the gears of the chain in radians;

R _stars = 30.54 mm - the radii of the gears Z ₈ and Z ₉ ;

16S _n - must correspond to a given winding height

(S _n = H).

Gear rotation angle Z ₅

Moving rails

Hence

Thread guide movement

Taking in the multiplier 7, Z ₆ = 112 and Z ₇ = 18, and S _pmax = H _p = 205 mm, we obtain:

The speed of the yarn guide is equal to the speed of the chain.

Chain angular rotation speed

Where: - angular speed of rotation of the gear Z ₅

Then

Where:

H _p - 205 mm - the range of movement of the staff (one way);

k is the total number of revolutions of the groove cam informing the movement of the rail during the cycle of movement (one double stroke) of the rail;

n _to - the frequency of rotation of the groove cam, which informs the movement of the rail.

Then the speed of the thread guide chain (thread guide speed)

Winding Circumferential Speed

where: D is the diameter of the winding thread on the core;

n _in - spindle speed.

where: d ₁ , d ₂ , d ₃ , d ₄ - pulley diameters F ₁ , F ₂ , F ₃ , F ₄ in the kinematic transmission, respectively, on an electric motor, a drive shaft

n _m - frequency of rotation of the electric motor.

The frequency of rotation of the groove cam, reporting reciprocating motion to the rail:

Turn tangent:

The angle of crossing turns:

The shear angle between the turns of various pairs of winding layers, at which a closed structure is obtained, can be determined by the formula:

where: Z = 0 or Z = 1 - the multiplicity of winding closure;

p is 1; 2; 3 - degree of winding closure;

m is 1; 2; 3 - number of a pair of winding layers, at which the turns

(m + p) ^th pairs of layers will wrap m ^th pair of layers.

where: d is the diameter of the wound thread;

D is the diameter of the winding of the porous septum;

β is the angle of intersection of the turns.

For small values can take

Then

But

Where: - the total gear ratio from the spindle to the groove cam, reporting a reciprocating movement of the rail.

With closed winding

Here n ₁ is the integer part of the number [ki _o ].

In our case (Figure 1) k = 1, and

i≈1 - gear ratio;

Then ki _o = 53.33 and n ₁ = 53.

Put Z = 1; p is 3; d = 0.5; D = 110 mm, a

The design of the winding mechanism is used to form porous septa of tubular textile filters of increased dimensions. Two closed windings (leading and lagging) can be formed.

Calculations confirm the possibility of laying the yarn on the package up to two meters in length on this winding mechanism, which is impossible in other known winding mechanisms.

Information sources:

1. RF patent for the invention No. 2113562 (Kazakovtsev Yu.I., Matyushev II, Rabkin RL), November 21, 1995, “Drive of the mechanism for moving the strip of a folding device”.

2. RF patent for the invention No. 2060922 (Ivanov G.M., Bocharov V.M., Grebenshchikova N.A., Pozdeev D.A., Shabalina I.V.), July 15, 1993, “Device for cross winding the thread onto the package. "

Claims (1)

A winding mechanism comprising a spindle for driving the package, a thread spreader, a yarn guide installed with the possibility of reciprocating parallel to the spindle by means of a mechanical transmission kinematically connected to an electric motor, characterized in that the mechanical transmission is made of a chain, and the thread spreader consists of a groove cam connected by a rail with animator and thread stacker chain.