JPH0457981A - Bobbin cradle revolution-regulatory stranded wire making machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire twisting machine for twisting wires having a rectangular or vertically elongated trapezoidal cross-sectional shape for use in wire bodies, particularly superconducting coils.

[Prior Art] An example of a conventional cage-type wire twisting machine will be described with reference to the drawings. In the partially sectional side view of FIG. 2, a fixed stand 1. The main shaft 3 is rotatably supported horizontally by bearings 2, 2 of the motor 12. It is rotationally driven via a speed reducer 19 and a drive chain 18. This main shaft 3 has a first. Second disks 4a and 4b are fixed at intervals, and the first disk 4a and the second disk
Between the disks 4b is a concave shape in which a hobbin 11 in which a filament wire 10 is wound is rotatably supported via a bearing at a position radially outward from the main shaft 3 so as to be rotatable in the direction in which the filament is fed out to the right. A plurality of bobbin cradles 9 are installed (only the lowest one is shown in the figure), and the details of both ends of the bobbin cradle 9 are rotatable by bearings on the outer periphery of the first and second disks 4a and 4b. Supported. A chain gear 21 is fixed to the left shaft of the first disk 4a, and a chain 8 is passed between it and a sun gear 17 which is coaxially fixed around the main shaft 30 and detachably fixed to the bearing 2. It rotates planetarily as the main shaft 3 and the disk 4a rotate. On the other hand, although not shown in this figure, other cradles have a cradle chain gear 22 attached to the right shaft of the first disk 4a, and a chain between the cradle chain gear 22 and the cradle chain gear provided on the shaft of the other cradle. The hook 23 is provided so that it can similarly rotate planetarily, and is configured to be connected to the bobbin cradle 9 and driven to rotate at the same time.

The filamentary wires 10 coming out of the bobbins 11 of the plurality of bobbin cradles 9 are passed through the shaft hole of the second disk 4b, and the guide wheels 24 are provided radially on the right side of the second disk 4b.
The filament bodies are sent through the batten 15 of the fixed stand 1 so as to converge at the twisting port 20, and are taken into a stranded shape by a pulling device on the right side (not shown) to produce a stranded wire. It has become. Note that in order to configure the stranded wire to have a rectangular or kilstone shape rather than a round cross section, a Turk's head device consisting of a Turk's head roller is provided at the twisting port 20 to form the stranded wire in a compressed manner. There is.

[Problems to be Solved by the Invention] In the twisting method using such a device, the strands of a plurality of filaments are rotated by setting the rotation ratio between the bobbin cradle 9 and the sun gear 17 to a certain constant condition. When the bobbin cradle 9 is twisted relative to the ground, there is a method for twisting the twisted filament strands, and a method in which the sun gear 17 is separated from the bearing 2 and the first. second disk 4a,
By fixing the bobbin cradle 9 to the bobbin cradle 4b, it is possible to twist the bobbin cradle 9 as one body without twisting. Therefore, it is possible to sufficiently cope with twisting wires into a shape such as a round cross section as shown in FIG. 5(B). In addition, Figure 5 (
A) is a side view of a stranded wire with a round cross section.

However, for example, FIGS. 3(A) and (B).

(C) shows a side view, its a-a sectional view, and bb-sectional view, in which the stranded wire is configured in a rectangular shape with a flat cross section, or when the cross section is a keystone shape in a cookes head with a compression roll, etc. For example, in the case of stranded wires for superconducting coils that need to be formed into vertically elongated trapezoids or rectangles, the sections lined up in the longitudinal direction of the rectangular cross section may be slightly unbalanced in wire tension as shown in Figure 4 (A). Figure 3 (E)
, It was extremely difficult to create conditions that would result in the desired rectangular shape shown in (C). For this reason, it has been impossible to increase the working speed, and it has been extremely difficult to manage working conditions.

The present invention has been made in view of these points, and provides a novel method that eliminates the drawbacks of the prior art described above and allows production of stranded wires with a desired shape even if the working conditions for forming stranded wires change slightly. The purpose is to provide a stranding machine.

[Means and effects for solving the problem] In the present invention, the rotation of the bobbin cradle on which the bobbin around which the filament of the filament is wound is mounted, that is, the rotation, is controlled by the continuously variable transmission and the differential, regardless of the rotation of the main shaft and the disk. By making it possible to freely select speed increase or deceleration using a dynamic gear device, and giving an appropriate twist to the strands of the filament, the shape of the filament after being twisted is adjusted. be. Furthermore, the continuously variable transmission can be adjusted so that the stranded wire is in the optimum state without having to check the working conditions during operation.

[Example] Hereinafter, the present invention will be described in detail based on the drawings. FIG. 1 is a side view showing the configuration of this variable bobbin cradle rotation type wire twisting machine. The difference from the conventional example shown in FIG. 2 is that the rotation of the bobbink and dollar can be freely adjusted with respect to the rotational speed of the main shaft, and the basic configuration other than the drive system is Since it is almost the same as that shown in FIG. 2, the same reference numerals will be given to the same members in the following description.

That is, a main shaft 3 is rotatably supported horizontally by bearings 2, 2 on fixed stands 1, 1, and the rotational driving force is controlled in two series by a motor 12.

That is, one is the chain gear 3 fixed to the output shaft.
1 and a chain gear 3a fixed to the left end of the main shaft 3, the bobbin cradle 9. disc 4
The rotational drive for twisting the wire by rotating the main shaft 3.a and 4b is used. Chain gear 38. The differential gear device 14 is rotationally driven via the chain 183 and chain gear 37. Note that this rotational drive is provided with a clutch device (not shown) and configured to be detachable. On the other hand, a chain gear 32 is fixed to the output shaft of the motor 12, and is connected to a chain gear 33 provided on the input shaft of a continuously variable transmission 13, such as a chain gear continuously variable transmission, mounted on the machine frame 30. A drive chain 182 is attached to the drive chain 182. This continuously variable transmission 13 is capable of freely and reliably adjusting the rotation of the output shaft to an arbitrary rotation speed within a fixed ratio range with respect to the rotation speed of the input shaft. A chain gear 35 fixed to the output shaft of this continuously variable transmission 13
is engaged via a chain 185 with a chain gear 36 fixed to an input shaft of a differential gear device 14 rotatably provided on the machine frame 30'. The differential gear device 14, which is rotationally driven by these two series, includes two sun gears 42 and 43 that are fixed and rotatably supported on the output shaft 41, as schematically shown in FIG. Coaxial planetary gears 44 and 45 meshing with the gears are provided in a rotatable casing 47, and a chain gear 36 is integrated with the sun gear 43, and a chain gear 37 is integrated with the casing 47. , and an output shaft 41 with a chain gear 39.

Casing 4 with chain gear 36 and chain gear 37
It has three rotating elements of 7. The relationship between the rotational speeds of the three rotating elements is the output rotational speed of the chain gear 39, ω2. The rotational speed of the chain gear 36 is ω2. The rotational speed of the chain gear 37 is set to ω3. Let the reduction ratio be i.

Note that the reduction ratio 1 is defined as the number of teeth of the gears 43.45 and 44.42 in the differential gear device 14, respectively, W+X+
This is when y+Z.

By utilizing this relationship of the differential gear device 14, the rotation speed of the output shaft 41 can be arbitrarily changed from normal rotation to reverse rotation.

A chain gear 39 is fixed to the right output shaft 41 of the differential gear device 14, and is interposed between the sun gear 7 rotatably attached to the main shaft 3 via a large bearing 6 and the integral chain gear 40. The chain 184 is passed,
Since the sun gear 7 is connected so that it can be rotated at various tuning ratios, the bobbin cradle 9 is also connected to the main shaft 3 by the chain 8 that connects the sun gear 7 to the chain gear 21 fixed to the bobbin cradle 9. It is possible to perform arbitrary relative rotations.

The first one is fixed to the main shaft 3. Second disk 4a, 4
Between b, a concave-shaped bobbin cradle 9 holds the bobbin 11 on which the filament wire is wound vertically so as to be rotatable in the feed direction of the wire on the right side, and can rotate planetarily in the horizontal direction. A plurality of them are provided via bearings. (Only the lowest one is shown in the figure.) Element wire 10 wound around pobbin 11 on pobbin cradle 9
is sent through the shaft hole of the right disk 4b and the guide wheel 24 to converge on the Turk's head 16, which is made up of four Turk's head rollers forming a rectangular shape, for example, and is sent to the right drawing machine (not shown) by the Turk's rad roller. It is not compressed and shaped before it is sent as a flaming wire.

Therefore, in the case of a stranded wire having a round cross section as shown in FIG.
By disengaging the clutch provided on the output shaft 41 of the chain 18.4, the rotational driving force of the motor 12 is transferred to the chain 18. This can be done by rotating the main shaft 3 via the . If the cross section is rectangular or keystone shaped, the rotation of the main shaft 3 is driven by the chain gear 39 of the differential gear mechanism 4 via the chain 188, and the aforementioned clutch device is connected to control the rotation from the motor 12. The driving force is applied to the continuously variable transmission 13 via the chain 18□, and the rotation ratio is controlled to drive the chain gear 36, which is the other input shaft of the differential gear device 14, via the chain 185. Since the rotation of the output shaft 41 and the chain gear 39 can be controlled arbitrarily, it is possible to twist the wire while adjusting the relative rotation ratio between the main shaft 3 and the bobbin cradle 9 and maintaining the optimum wire tension of the strands 10. becomes possible.

Next, the reason why the differential gear device 14 described above can achieve an arbitrary rotation speed will be explained in the first embodiment of the present invention.
The change in rotational speed will be specifically explained with reference to the diagram while calculating it assuming that the reduction ratio is the gear ratio.

In the speed relational expression (1) of the differential gear device 14, the input rotation speed ω from the main shaft is the input rotation speed ω from the main shaft 3 to the chain gear 38.
This is the input rotation to the chain gear 37 via the chain 183, and the input rotation speed ω2 from the continuously variable transmission 13 is the input rotation to the chain gear 36. The output rotational speed ω is a composite of the rotational speeds from the two series, that is, the one calculated using the speed relational expression (1) above, and this is the rotational drive source of the bobbin cradle 9. . Here, we will explain how this equation (1) changes depending on the reduction ratio i.

(1) When i=1 Margin below C) (2) When i=lo =0 9ω, +〇, 1ω.

(3) When i=□ Knee 9ω2 + 10ω.

Therefore, it is possible to derive various reduction ratios by selecting the reduction ratio i.

The input rotation ω2 from the continuously variable transmission 13 is shifted to ω,
Let us consider the case where it changes from =2 to 2 ORPM.

=-9ω2 + 10ω3 (when i=-), so (J, =-9X2+10X10:82RPM(ω,
= 2 RPM, ωs = 1 ORPM) ωl = -9
X20 + l10 By changing the other input rotations ω2 by the transmission in a constant rotation state, the output rotations, that is, the chain gear 39, the chain 184, the chain gear 40 . sun gear 7
, chain 8. Through the chain gear 21, the rotation speed of the bobbin cradle 90 can be changed arbitrarily relative to the main shaft 3.

[Effects of the Invention] As explained above, the bobbin cradle rotation adjustable type wire twisting machine of the present invention can twist the strands of the bobbin cradle regardless of the rotating direction of the main shaft and the disk, that is, the direction in which the strands of the strand are twisted. It is now possible to freely adjust the amount of twist, and when multiple strands are twisted together to form a deformed strand, the strands can be twisted in the direction that tightens them, or conversely twisted in the direction that they are loosened. By rotating the wire, it is possible to greatly improve the formability of superconducting stranded wires, etc., which are difficult to form into a rectangular cross-section, especially into a vertically elongated trapezoidal shape.

Also, by connecting the drive system with a chain, the ease of assembly has been affected by the rubber powder generated by belt wear, but using an oil-less chain eliminates these problems. Not at all.

[Brief explanation of drawings]

FIG. 1 is a side view showing the configuration of a bobbin cradle rotation variable type wire twisting machine showing an embodiment of the present invention, FIG. 2 is a side view of a conventional wire twisting machine, and FIG. Side views of the twisted wires formed by the wire machine, FIGS. ), (B) are cross-sectional views of undesirable states; FIGS. 5(A) and (B) are side views and cross-sectional views showing twisted wires having a round cross-sectional shape; FIG. 2 is a schematic diagram showing the configuration of a dynamic gear device. 1...Fixed stand 3...Main shaft 6...Large bearing 8...Chain O...Element wire 2...Motor 4...Differential gear device 81.18□, 18°37. ...Flange 42.43...Sun gear 2...Bearings 4a, 4b...Disk 7...Sun gear 9...Bobbin cradle 11...Bobbin 13...Continuously variable transmission, 18 ．． , 18°...Chain 41...Output shaft 44.45...Planetary gear Fig. 3 Fig. 2 Fig. 4 Fig.

Claims (1)

[Claims] In a cage-type wire twisting machine, a plurality of disks 4a and 4b are fixed to a main shaft 3, which is rotatably supported by a bearing 2 on a fixed stand 1, and the disks are rotatably supported by a bearing between them, and by another large bearing 6. A bobbin cradle 9 is connected and driven by a sun gear 7 and a chain 8 incorporated in the main shaft, and this bobbin cradle 9 is driven by a motor 12 that rotates the main shaft 3, a continuously variable transmission 13, a differential gear device 14, and the above-mentioned The rotation of the main shaft 3 is also configured to be driven via the sun gear device 7 by a two-line transmission system via a differential gear device 14.
By selecting the speed ratio of the continuously variable transmission 13 and the transmission ratio from the motor 12 to the bobbin cradle 9 so as to offset the planetary rotation of the bobbin cradle 9 due to the rotation of the A bobbin cradle rotation adjustable type wire stranding machine characterized by the ability to select the number of rotations.