How sz-twisting lived cable products

 

(57) Abstract:

Use: production of cable products. The inventive veins located between aldatzeko and receiver, to reduce the beam is moved at a constant speed, clamp in two twisting points located at some distance from each other, in the other two points located between the torsion points exert torques, and carry out the rotation lived relative to their common axis with the same angular velocity, fill stranded conductors, the distance between the first point of the curl and the second point of application of the second torque, then the angular velocity of the rotation speed is increased to reseed this distance twisted conductors then at the time of its liberation from twisted lived the angular velocity of the rotation speed is reduced to the initial value, and the torque is removed from the first point at the next filling twisted veins of the above distances and simultaneously form an additional point of twisting at the end of this part, directed to the second point of application of torque. The invention allows to reduce the transition is e and can be used for the manufacture of twisted cable products.

There are several known methods for the production of rolled products by way of SZ with long unidirectional twisted segments[1]

The known method SZ-twisting short lived, when pivoted into the beam veins are of considerable length unidirectional twisted segment, which is achieved by a step change in the angular velocity of twisting lived and series connection of several parcels modules twisting [2]

Module twisting represents veins, are summarized in the beam, which is clamped between aldatzeko and receiver in two stationary points curl, which are located at some distance from each other, and the other two points located between the twisting point, to the cores put a torque which rotates the veins around their common axis with the same angular velocity. The distance between the first point of the curl and the point of application of the second torque is the drive. The modules are arranged in parallel in the same plane. The first module is connected with the second, second to third and third to fourth. The total length of the drive is determined by the distance from the first point of twisting to the location of the last point of twisting. The main negotatable close of the present invention in essence is the way SZ-twisting, including periodic simultaneous withdrawal of the application to the beam torques, or the periodic change of the sign of the torque [3]

When the above method, the area between aldatzeko and thrust or receiver wires clamped at two points curl, located at a certain distance between them; in the other two points located between the points of twisting is applied to the beam torque and implement rotation lived around their common axis with the same angular velocity. The process of moving lived and twisted beam is carried out at a constant linear velocity. In the area between the first twisting point and the point of application of the first moment of rotation, while rotating clockwise lived relative to the direction of movement lived, is twisting lived in the left direction of type S. In the same period in the section between the point of application of the second moment of rotation and the second point twisting occurs right twisting lived type z-Twisted sheaf on the site between the first point of the curl and the point of application of the first torque when his promotion fills the distance to the point of application of the second torque. At that moment, when the head part skracenog the second workpiece frees the above distance; at the same time, non-twisted veins fill this distance. Then the operation is repeated either change the sign of the torque.

The main disadvantage of this method is that the length is twisted in one direction of the line segment equal to the length between the first point of the curl and the second point of application of torque, in addition there is a large transition area between the direction of twisting of S and z

The challenge is to develop technologies SZ-stranding, which allows to obtain long unidirectional twisting several times greater than the length of the distance between the first point of the curl and the point of application of the second torque, and also to get a short transitional pieces, changing the direction of twisting of S at z

The task in the proposed method, SZ-twisting lived solved when the points of application of the torque speed change speed nilived around their common axis and clamp the wires in an additional point of twisting before the second point of application of torque, as well as simultaneous change of the sign of the torques.

The manufacture of a curved beam is carried out at a uniform movement lived with velocity V1is set out bestower of nodes 1 wound cores 2, bring them into the beam. Between aldatzeko and thrust 9 wires clamped at two points curl a and e, located at a certain distance from each other, in the other two points b and d located between the torsion points a and e, to the cores exert torques M1and M2rotating veins with the same angular velocity nibefore point d of the application of the second torque M2veins clamp in an additional point C. the Sleeve 8 center veins.

Rotation lived, summarized in the beam, is around their common axis 10. While removing the first torque additional point C becomes a twisting, while the unidirectional application of torque to the cores extra point becomes the guide. The distance between the first point of the curl and the point of application of the second torque M2is the drive, i.e. the distance a-d is equal to L1.

The following is a variant of implementation of the proposed method for SZ-stranding, which allows to obtain large segments of unidirectional twisted lived, several times greater than the length of the drive L1, i.e. the distance between the first point of twisting a and point d, the application corogne s calibre 6, the point of twisting with additional caliber 7.

Application to the cores torques M1, M2is carried out, for example, torsional heads of 4.5 to twist the wires around their common axis with angular velocity ni1and ni2.

The manufacture of a curved beam is carried out at the movement lived, kept in a bun, with a constant velocity Viand includes the following operations.

I o p e R a t I. During the first period of time T1L1/V is synchronous rotation of the twisting heads with rotation speed n1. The rotation is clockwise. During this period on the section a-b is twisting lived in direction S with the number of twists TOABn11/V, section d-e twisting lived in the Z-direction, with a number of twists TOde-n12/V. Twisted sheaf on section a-b is received in the drive and fills it. At that moment, when the head part of the twisted beam appears at point d, there is a simultaneous stepwise increase in the frequency of rotation of the heads to n21and n22.

II o p e R a t I. During the second period of time T2L1/V section a-b happens is de d-e is twisting in the Z-direction with a speed of rotation n22. The final number of twists that go from point e, is determined by the algebraic sum of the number of twists coming a twisted beam with the drive period T1and the number of twists formed on the section d-e in the second period, T2. Thus, the final number of twists TOand(n11n22)/V. since n22> n11saves the direction of twisting Z. when the head part of the twisted beam with a number of twists TOABn21/V reaches the point d, i.e., to fill the drive length L1occurs stepwise lowering of the frequency of rotation of the heads to n1.

III o p e R a t I. During the third period of time T3L2/V section a-b is the twisting of the beam in the direction S with the number of twists TOABn11/V While L2is part of the drive. On the section d-e is the twist beam with a frequency of n12in the direction Z. the Total number of twists after point e is determined by the sum of the number of twists coming a twisted beam from the drive in period T2and the number of twists formed on the section d-e in the third period. Thus, the final number of twists will be TOand(n21 which is Z on S.

When the head part of the twisted beam with a number of twists To n11/V will fill part of the drive on a length L2is stopping the rotation of the first twisting head and additional caliber 7 becomes twisting.

IV o p e R a t I. During the fourth time period of T4L2/V twisted beam releases the drive length L2and non-twisted veins fill it. During the rotation of the second twisting head with a rotational speed of n12on the C-d there is an additional twist coming from the drive twisted beam and thus the final number of twists after point d is equal TO4(n11+n12)/V, with its further promotion of the twisted beam arrives at the section d-e, unwound with rotation speed n12and the final number of twists after the output of a caliber equal TO4(n11+n12-n12)/V= n21/V. While retaining the direction of twisting S. At the moment when the head of the non-twisted lived reaches point C, i.e., completely fill the drive length L2that is, the reverse rotation of the head.

V o p e R a t I. During the fifth angular velocity-n11at the same time , caliber 7 becomes the directing. On the section a-b is twisting in the Z-direction, with a number of twists TOAB-n11/V. When moving the twisted beam fills the drive length L1. At the beginning of period T5on the section d-e twisted beam coming from the C-d with the number of twists TO4when the reverse rotation again gets an extra twist in the same direction, with speed +n12.The final number of twists after the output of the gauge is equal TOandTO4+ +n12/V (n11+ n12+ n12/V 3n11/V. When moving non-twisted wires on the section d-e are twisted in the same direction S with the number of twists per unit length TOandn12/V

In a further process for one cycle is carried out in accordance with Fig. 2-4, but with the opposite sign. The nature of the process depicted in Fig. 6-8.

Operations 1-8 are repeated periodically after each cycle.

The length of the forming quasinilpotent can be determined from the following relationship: LtoirL1where Ltothe length of quasinilpotent;

i number stupine 1 twisting is carried out without reverse twisting heads; r 2 simultaneous reverse rotation of the heads.

The following are specific examples of implementation of the proposed method for SZ-stranding.

Making curved blanks is carried out in a joint promotion delivered lived with constant speed V.

P R I m e R 1. The process SZ-twisting is carried out under the following conditions:

V 150 m/min

r 1

i 2 (two degrees of angular velocity of rotation of the heads)

n11=n121500 1/min

n21n223000 1/min

L110m

L2part of the drive L << L, then L2L1.

I o p e R a t I. Filling line by pulling lived through the inlet caliber 3, two twisting heads, additional 7 and the output torque gauge 6 and further traction on the site. Then is synchronous unidirectional rotation of the first and second twisting head with a rotational speed of n11= n12during the continuous feeding at a constant speed twisted lived. The operation lasts until the head part of the twisted beam at the location "a-b" will completely fill the drive L1.

The final number of twists after the output of the gauge is:

To< the and C and I. At the beginning of period T2perform manual lifting of the angular velocity of rotation of both heads to n21n22. The process lasts as long as the head part of the beam with the number of twists To n21/V will completely fill the drive L1.

The final number of twists after the output of the gauge is:

TOand(n11n22/V) -1/100 mm

The pitch h -100 mm, the direction of twisting Z.

3 o p e R a t I. At the beginning of period T3step reduce the angular velocity of rotation of the head to the original n11=n12. The process lasts as long as the head part of the beam with the number of twists To n11/V will fill part of the drive L2.

The final number of twists after the output of the gauge is:

TOand(n21n12/V) 1/100 mm

The pitch h of 100 mm, the direction of twisting S.

4 o p e R a t I. At the beginning of period T4perform the stop of rotation of the first twisting head, include additional caliber 7, to release the drive L2from twisted beam with simultaneous filling of the drive L2non-twisted parallel moving B>12n12)/V 1/100 mm

The pitch h of 100 mm, the direction of twisting S.

Then technological operations 1-4 repeat.

Thus, when i is 2, i.e. two degrees of rotational speed of the heads, and the inclusion of additional caliber obtained unidirectional twist S or Z equal to two lengths of the drive. The length of quasinilpotent Lto= irL1. In this case, Lto2L120 m

P R I m m e R 2. The process of twisting is carried out under the following conditions:

V 120 m/min

r 1

i 3 (three degrees of angular velocity)

n11=n121200 1/min

n21n222400 1/min

n31n323600 1/min

The length of quasinilpotent LtoirL13 1 10 30 m

The length of the unidirectional twisted segment of S or Z is equal to 30 m, the pitch h100 mm

P R I m e R 3. The process of twisting is carried out under the following conditions:

V 150 m/min

r 2 is the reverse rotation of the heads

i 2

n11n121500 1/min

n21n223000 1/min

L110 m

L2L1L.

Operations 1-4 perform similarly op the second head to the angular speed of rotation n11the reverse rotation of the second twisting head to the angular velocity-n12. Additional caliber becomes the directing. The operation lasts until the head part of the twisted beam will fill the drive L1.

At the initial period T5after the output of calibre on the section d-e is an additional twisting of the beam length L1L2. This piece has a number of twists per unit of length equal to

For (n11+ n12+ n12)/V 1/33 mm

Thus, at the time of the reverse transition area receives an additional twist. The final number of twists after the output of a caliber equal to: Kandn12/V +1/100 mm

The pitch h of 100 mm, the direction of twisting S.

6 o p e R a t I. At the beginning of period T6by steps rise to the angular velocity of rotation of both heads up-n21-n22. The process lasts as long as the head part of the beam with the number of twists To n21/V, obtained in section a-b, will not fill the drive L1. In this period the total number of twists after the output of the gauge is:

TOand(n11+ n22)/V 1/100 mm

Step with the corner speed of rotation of the head to the initial-n11and-n12. The process lasts as long as the head part with a number of twists To n11/V will fill part of the drive on a length L2. The final number of twists after the output of a caliber equal to: Kand(n21+ n12)/V -1/100 mm

The pitch h -100 mm, the direction of twisting Z.

8 o p e R a t I. At the beginning of period T8perform the stop of rotation of the first twisting head, include additional caliber 7, before release of L2from twisted billet with simultaneous filling of the drive L2non-twisted parallel to the moving conductors.

The final number of twists after the output of the gauge is:

TOand(n11n12+ n12)/V -1/100 mm

The pitch h -100 mm, the direction of twisting Z.

Then the operation 1-8 repeat.

When carrying out steps 1 and 2 the beam is twisted in the z direction.

Thus, during one cycle of operation 3, 4, 5, 6, 7, 8, 1, 2) harvesting after the output of calibre four times twisted in the direction S and four times in the z direction.

The length of quasinilpotent LtoirL14L1.

Odonates.

P R I m e R 4. The process of twisting is carried out under the following conditions:

V 120 m/min

r 2

i 3

n11n121200 1/min

n21n222400 1/min

n31n323600 1/min

L110 m

The pitch h of 100 mm

The length of quasinilpotent LtoirL2310= 60 m

The length of the unidirectional rolled beam in the direction S or Z equal to 60 m In the reverse length unidirectional twisted beam will be doubled.

In Fig. 9 shows the results of the analysis of the operation of example 3 in several periods twisting. On the plots shown:

and the frequency of rotation of the first head n1;

b rotation speed of the second head n2;

the number of twists per unit length of the drive TOandand the direction of twist S or Z;

r the number of twists per unit length after the point "e" (the output of calibre)andand the direction of twist S or z

It is evident from Fig. 9 shows that the length of the unidirectional rolled beam in the direction S or Z is equal to four lengths of the drive, i.e., when L1L2the length of quasinilpotent Lto2 2 L14L1.

When the reverse rotation of the twisting heads, due to the presence of dopolnitelnogo in reverse, when there is promotion twisted lived, can be avoided.

The proposed method SZ-twisting of the beam increases the length of the unidirectional rolled beam S or Z equal to several lengths of constructive memory. The length of the unidirectional twisted segment of the beam depends on the number of stages of frequency of rotation of the heads, and having one reverse in each cycle of production of rolled billets. In addition, when performing the reverse rotation of the heads, there is no promotion of the twisted beam, i.e., preserves the direction of twisting.

1. HOW SZ-TWISTING LIVED CABLE PRODUCTS, which are summarized in the beam veins have between aldatzeko and receiver and when moving with a constant speed clamp in spaced some distance from one another of the two twisting points, apply torque in two points located between the twisting point, providing a twist lived relative to their common axis with the same angular velocity, fill stranded conductors, the distance between the first course of movement lived point twisting and the second point of application of torque, remove the torque from the first point on remotivation direction of torques characterized in that after filling twisted conductors specified distances the angular velocity of rotation lived in both points of application of torque speed increase to reseed this distance twisted veins, then at the time of its liberation from twisted lived the angular velocity of the rotation speed is reduced before reaching the initial value, and the torque from the first point removed during the next filling twisted veins of the above distances and simultaneously form an additional point of twisting at the end of this part, directed to the second point of application of torque.

2. The method according to p. 1, characterized in that it further in the second point of application change the sign of the torque with simultaneous application of the first point torque of the same sign and implement the rotation lived with the same angular velocity.

 

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