JPH077022U - Pre-twisting device for twisting machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pretwisting device for a twisting machine having a structure in which a load acting on a bearing of a guide roller is minimized. [Structure] A pretwisting device 3 disposed on an inlet side of a double twisting and twisting machine 1, which is a first rotating body 28 having a hollow hole 27.
A first guide roller 40, 41 and a second guide roller 42, 43 provided in contact with an extension line of the central axis 35 of the hollow hole 27 and attached to the first rotating body 28; 40 and 41 and the second guide rollers 42 and 43, and a take-up cabstan 38 attached to the first rotating body 28 having a rotating shaft 37 orthogonal to the central shaft 35, and the first A second rotating body 46 rotatably supported around the rotating body 28, a large bevel gear 47 attached to the second rotating body 46, and an attachment to the rotating shaft 37 so as to mesh with the large bevel gear 47. The guide rollers 40 to 43 of the twisted wire for the take-up cabstan 38 are provided so as to be in contact with the central shaft 27 of the first rotating body 28 to reduce the centrifugal force acting. It became the composition.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pretwisting device arranged on the inlet side of a twisting machine for twisting a plurality of strands, and more particularly to a pretwisting device in which the influence of centrifugal force is minimized.

[0002]

[Prior art]

 First, the structure of the twisting machine to which the pretwisting device is applied will be described with reference to FIG. A twisting die 2 and a pretwisting device 3 are disposed on the inlet side of the twisting machine body 1. A flyer 7 having hollow shafts 5 and 6 at both ends is rotatably supported on a base (not shown) of the stranding machine main body 1, and a floating frame 8 is provided in an internal space of the flyer 7 via a bearing mechanism (not shown). The flyer 7 is rotatably supported, and remains stationary regardless of the rotation of the flyer 7. The flyer 7 is provided with guide rollers 9 and 10 in contact with the rotation center axis of the flyer 7. The flyer 7 runs along the flyer 7 from the guide roller 9 to the floating frame 10 via the guide roller 10. Is twisted twice to form a stranded wire. The floating frame 8 is provided with a take-up cabstan 11, a traverse device 12, a take-up device 13, etc., and the stranded wire is taken up by a take-up bobbin 14. The flyer 7 is rotated by the timing pulleys 15 and 16 fitted in the hollow shafts 5 and 6 at both ends, and the drive shaft 18 is driven by a common drive motor 17 through a timing pulley or a timing belt. The rotational driving force is transmitted to 15 and 16. Rotational driving force is transmitted from the gear 19 fitted to the inner end of the hollow shaft 6 to the take-up cabstan 11 and the like in the floating frame 8 via the gear mechanism 20.

By the way, since the distance from the twisting die 2 to the take-up cabstan 11 is long, the tension of the plurality of wires W may not be uniform, which may cause twisting unevenness or protrusion of the wires. Therefore, a pretwisting device 3 for performing preliminary twisting is provided on the inlet side of the twisting machine main body 1 and after the twisting dice 2 to prevent uneven twisting and protrusion of the strands.

Further, in the take-off cabstan 11 arranged on the floating frame 8 inside the flyer 7, the pitch adjustment of the twisted wire is impossible during the operation of the apparatus, and is adjusted during the stop of the operation. However, since it is troublesome, it has been proposed to adjust the number of twists by the take-up cabstan 11 in the pretwisting device 3 and omit the take-up cabstan 11 in the floating frame 8.

Known as such a pretwisting device are those disclosed in Japanese Patent Publication No. 59-48494, Japanese Utility Model Publication No. 61-394, Japanese Patent Publication No. 3-9568 or Japanese Patent Publication No. 4-26165. Has been. In all of the prior twisting devices, the first guide roller in contact with the rotation center line, the second guide roller radially displaced from the rotation center line, and the second guide roller in the opposite direction from the rotation center line A rotation body having a third guide roller deviated in the radial direction and a fourth guide roller in contact with the rotation center line, and a rotation center axis that is the same as the rotation center axis of the rotation body. It has a structure including a take-up cabstan located between two and three guide rollers.

[0006]

[Problems to be solved by the device]

 In the pretwisting device having the above-described structure, the second and third inner rollers are located radially outward of the take-up cabstan and rotate at a higher speed than the take-up cabstan. That is, when the diameter of the take-up cabstan is increased, the second and third guide rollers are located outwardly by that amount, and the bearings of the second and third guide rollers are not only loaded by the tension of the wire, but also the spinning rotor. Since it rotates at high speed around, the load caused by centrifugal force is also used. The load due to this centrifugal force is considerably large, and the bearings of the second and third guide rollers located outside are easily damaged.

The present invention has been made in view of the above problems, and an object thereof is to provide a pretwisting device for a twisting machine having a structure in which a load acting on a bearing of a guide roller is reduced as much as possible. It is provided.

[0008]

Means for Solving the Problems A pretwisting device for a twisting machine that achieves the above object is a pretwisting device that is disposed on the inlet side of a double twisting and twisting machine and has a hollow hole. Provided between the rotating body, the first guide roller and the second guide roller which are provided in contact with the central axis extension line of the hollow hole and are attached to the rotating body, and between the first guide roller and the second guide roller. A take-up cabstan attached to the first rotating body and having a rotation axis orthogonal to the central axis; a second rotating body rotatably supported around the first rotating body; The large bevel gear attached to the rotating body, and the small bevel gear attached to the rotating shaft so as to mesh with the large bevel gear.

Further, the twisting machine is rotatably provided on an opposing base and has a flyer provided with a required guide roller, a floating frame rotatably supported inside the flyer, and a floating frame provided on the floating frame. It is equipped with a take-up cabstan and a take-up device, and the first and second rotating shafts of the pretwisting device are driven from a common drive source, and the drive system leading to the second rotating shaft has a variable torque clutch. Is preferred.

[0010]

[Action]

 The take-up cabstan has a rotation axis orthogonal to the central axis of the first rotating body, and the twisted wire guide roller for the take-up cabstan can be provided so as to be in contact with the central axis of the first rotating body. In order to rotationally drive this take-up cabstan separately from the first rotator, a second rotator is rotatably supported around the first rotator, and the take-up cabstan is rotated between the rotary shaft and the second rotator. The small bevel gear and the large bevel gear are used to convert the rotation axis by 90 degrees.

When the take-up cabstan of the pretwisting device is rotationally driven through a clutch with a variable torque, the take-up tension becomes variable, and the tension of the twisted wire drawn from the pretwisting device to the twisting machine is appropriate. The value is adjusted. Then, the twist pitch is adjusted as usual by the take-up cabstan in the main body of the twisting machine.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a cross section of a main part and a drive system of a pretwisting device of the present invention, and FIG. 2 is a cross sectional view taken along line XX of FIG.

In FIG. 1, a housing 26 is fixed to a base 25, and a first rotating body 28 having a hollow hole 27 is rotatably supported in the housing 26 via a bearing 29. The inlet side of the first rotating body 28 is a cylindrical enlarged portion 30, and a holder 33 having a pair of holding plates 31 and 32 is attached to the tip of the cylindrical enlarged portion 30. The center line 34 of the holding plates 31 and 32 and the center axis 35 of the hollow hole 27 are straight lines, and a rotary shaft 37 is rotatably supported by a bearing 36 built in the holding plates 31 and 32. There is. The take-up cabstan 38 is fitted into the rotary shaft 37, and the rotary shaft 37 and the center line 34, that is, the center shaft 35 are arranged to be orthogonal to each other.

As clearly shown in FIG. 2, the 1a and 1b guide rollers 40 and 41 are disposed on the sides of the holding plates 31 and 32 on which the take-up cabstan 38 is inserted so as to contact the center line 34, that is, the central axis 35. 2a and 2b guide rollers 42 and 43 are rotatably supported so as to be in contact with the center line 34, that is, the central shaft 35, on the output side of the take-up cab 38 of the holding plates 31 and 32. ing. In addition, the guide rollers 40 to 43 are of a bearing-containing type.

Returning to FIG. 1, a second rotating body 46 is rotatably supported on the outer periphery of the cylindrical enlarged portion 30 of the first rotating body 28 via a bearing 45. A large bevel gear 47 is attached to the tip of the second rotating body 46. Then, a small bevel gear 48 that meshes with the large bevel gear 47 is fitted into the tip of the rotating shaft 37 described above. A balancing weight 49 is fitted on the side opposite to the small bevel gear 48.

Further, the drive system will be described. A first timing pulley 50 is fitted in the rear end of the first rotary body 28, and a second timing pulley 51 is fitted in the rear end of the second rotary body 46. A second drive shaft 53 is connected to the drive shaft 18 of the stranding machine main body 1 via a joint 52, and third and fourth timing pulleys 54 and 55 are fitted into the second drive shaft 53. Then, the first timing pulley 50 is driven by the third timing pulley 54 and the timing belt 56, and the fourth timing pulley 55, the fifth timing pulley 57, the powder clutch 58, the sixth timing pulley 59, and the timing belt 60. Thus, the second timing pulley 51 is driven. Here, the powder clutch 58 has a structure in which magnetic powder is interposed between a pair of joint members, and the magnetic powder is solidified when electricity is applied to connect both joint members. The torque can be adjusted by the magnitude of the energizing current.

Next, the operation of the pretwisting device 3 having the above structure will be described with reference to FIG. The plurality of wires W are gathered by the twisting die 2, guided by the 1a, 1b guide rollers 40, 41 so as to coincide with the center axis 35, wound around the take-up cabstan 38 several times, and further It is guided by 2a, 2b guide rollers 42, 43 so as to coincide with the central axis 35, and reaches the stranding machine main body 1 through the hollow hole 27. By the way, the first rotating body 28 is rotationally driven in the direction of the arrow a by the common second drive shaft 53, and the assembly of the strands is a stranded wire. Further, the second rotating body 46 is rotationally driven from the common second drive shaft 53 through the powder clutch 58 in the direction of arrow b in the same direction earlier or later. Due to the difference in rotation between the first rotating body 28 and the second rotating body 46, the large bevel gear 47 and the small bevel gear 48 mesh with each other, the rotating shaft 37 rotates, and the stranded wire wound around the take-up cabstan 38 is pulled. The number of teeth is selected so that the peripheral speed of the take-up cabstan 38 substantially matches the pulling speed of the twisting machine body 1. Further, the number of rotations of the first rotary shaft 28 is set so that the number of twists is preliminary in relation to the pulling speed.

As shown in FIG. 2, the guide rollers 40 to 43 are located in contact with the center line 34 and rotate in the a direction in comparison with the conventional example located radially outward of the take-up cabstan 38. The centrifugal force caused by is extremely reduced, and there is no fear that an unreasonable load acts on the bearings incorporated in the guide rollers 40 to 43.

When the magnitude of the energizing current supplied to the powder clutch 58 in FIG. 1 is changed, the take-up torque is changed, and the tension T2 at the outlet side with respect to the tension T1 at the inlet side of the stranded wire is adjusted to change the twisting machine. The tension T2 at the entrance of the main body 1 can be made appropriate and constant.

If the continuously variable transmission is interposed in place of the powder clutch 58 of FIG. 2 and the take-up cabstan 11 of the twisting machine body 1 of FIG. 3 is omitted, the twisting length can be adjusted by the pretwisting device. , The twist length can be easily adjusted.

[0021]

[Effect of device]

 Therefore, in the pretwisting device of the twisting machine of the present invention, the take-up cabstan has a rotation axis that is orthogonal to the central axis of the first rotating body. The guide roller can be provided so as to be in contact with the central axis of the first rotating body, and the centrifugal force of the guide roller pivotally supported near the central axis of the first rotating body becomes small. The load acting on the bearing is reduced and a long life can be achieved.

When this take-up cab is rotationally driven through a clutch with a variable torque, the take-up tension becomes variable, and the tension of the twisted wire drawn from the pretwisting device to the twisting machine is adjusted to an appropriate value. It is possible to further reduce uneven twisting and floating of the wires.

[Brief description of drawings]

FIG. 1 is a diagram showing a cross section of a main part and a drive system of a pretwisting device of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a schematic view of a twisting machine to which the pretwisting device of the present invention is applied.

[Explanation of symbols]

 1 Twisting wire main body 3 Pre-twisting device 7 Flyer 8 Floating frame 9,10 Guide roller 11 Take-off cabstan 27 Hollow hole 28 1st rotating body 35 Center shaft 37 Rotating shaft 38 Take-up cabstan 40 1a guide roller 41 1b guide Roller 42 2a guide roller 43 2b guide roller 46 2nd rotary body 47 Large bevel gear 48 Small bevel gear 13 Winding device 53 2nd drive shaft (common drive source) 58 Powder clutch

Claims (2)

[Scope of utility model registration request] 1. A pretwisting device arranged on the inlet side of a double twisting and twisting machine, which is provided so as to contact a first rotating body having a hollow hole and a center axis extension line of the hollow hole. The first guide roller and the second guide roller attached to the first rotating body, and the first guide roller having a rotation shaft provided between the first guide roller and the second guide roller and orthogonal to the central axis. A take-up cabstan attached to the rotating body, a second rotating body rotatably supported around the first rotating body, a large bevel gear attached to the second rotating body, and the large bevel gear. A pretwisting device for a twisting machine, comprising a small bevel gear attached to the rotary shaft so as to mesh with each other. 2. The pretwisting device for a twisting machine according to claim 1, wherein the twisting machine is rotatably provided on an opposing base and provided with a required guide roller, and an inside thereof. A floating frame rotatably supported on the floating frame, a take-up cabstan and a winding device provided on the floating frame, and the first rotating shaft and the second rotating shaft of the pretwisting device are driven from a common drive source, A clutch in which the degree of torque is variable is interposed in the drive system that reaches the second rotating shaft.