JPS6268637A - Straightening method for wire-shaped body and its device - Google Patents

Abstract

PURPOSE:To improve the straightening effect and to simplify the device by providing a taking-over device respectively at the upstream side and down stream side and by elongating a wire-shaped body via the difference in the taking-over speeds thereof. CONSTITUTION:The small pulley 1 with smaller diameter and the large pulley 2 with larger diameter by the prescribed rate alpha therefrom are formed integrally coaxially and driven via a driving source with its rotation. The wire-shaped body (w) is diverted by a direction changing pulley 3 after being wound on the small pulley 1, then after being wound on the large pulley 2 led to the down stream. In this case, the wire bar body (w) is elongated between the small pulley 1 and large pulley 2 which are integrally fixed and the total length becomes (1+alpha) times. In this way, the twist and bend of the wire-shaped body (w) are prevented from the difference in the taking-over speeds. Consequently, the straightening effect is improved and the device can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method and apparatus for straightening a striatum.

(Prior art) There are two types of feeding methods in electric wire manufacturing equipment: a rolling method in which the feeding bobbin is rotated around its axis, and a flying method in which the feeding bobbin is fixed. When the filament is sent out, a twist of 360° remains per turn, and even in the case of a rolling type, it is common for winding curls to remain on the bobbin body.

FIG. 6 shows an extrusion insulation coating line, in which insulation and coating are formed on the filament W sent out from the delivery bobbin 101 via the guide ring 101A by the extrusion device 03, and then the cooling device J, 04, and is taken up by the take-up device 105 and taken up by the take-up device 1.
06 shows a series of winding steps. In this case, since twists remain in the filament <tw that is sent out from the bobbin 101 by the flying method, it has conventionally been widely practiced to smooth out the twists by squeezing them with a braking device 102 consisting of one or a pair of pressure rollers or the like. ing.

(Problems to be Solved by the Invention) In the case of the conventional squeezing-type straightening method, a considerable amount of running resistance is generated in the striated body W.

For example, the 6th L! In the case of the insulation coating forming line 1, in addition to the resistance for straightening the wire, resistance in the extrusion device 103, cooling device 104, etc. is added, and these combine to create a considerably large tension on the wire immediately before the drawing device 105. As a result, the tension may become excessive and impair the quality of the insulated wire! ``happens often.''

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has a step of picking up the filamentous body at one pulling speed, and a step of picking up the same filamentous body at an arbitrary speed downstream of the pulling device. A method for straightening a striatum, the method comprising: pulling the striatum at a predetermined rate higher than the pulling speed at a position, and stretching the striatum by a predetermined rate through both steps. , and a device used therefor.

(Function) This filament is stretched by the difference in the take-up speed between the downstream take-up position and the downstream take-up position in unit time, and at this time, the tensile force applied to the filament is It removes the habit of the striatum.

(Example) First, a device according to an embodiment of the present invention will be explained with reference to Figs. It is formed coaxially and integrally with a large pulley 2 whose diameter is larger by a predetermined ratio α, which will be described later, and is rotated at an appropriate speed by an appropriate drive source. As shown in the figure, the hook is first turned on the small pulley 1, and then the direction is changed on the direction changing pulley 3, and then the hook is turned on the large pulley 2 and then guided downstream. Assuming that there is no slippage between them, the filamentous body W is stretched between the small pulley 1 and the large pulley 2 by rotating the small pulley 1 and the large pulley 2, which are fixed to each other woodenly. , the striatum W approaching the small pulley 1 from a delivery source (not shown) will be intersected in the same way as P[1]. A similar stretching effect is applied to the entire length of the body W, and as a result, the length of the striatum W, which is the entire length of the body W, becomes (1+α)L.

Regarding the value of α, it varies depending on the material and the line shape, but in the case of ordinary copper wire], /'100 to 5/'1
Approximately 00 is appropriate.

FIG. 3 shows another embodiment of the device of this invention. In this embodiment, the small pulley 11 and the large pulley 12 are not integrated but are provided separately. Since the driven pulleys 5 and 4 are rotationally driven via the timing belt 6, the operation is exactly the same as the embodiment shown in FIG. In addition,
Reference numeral 7 designates a drive pulley which rotationally drives these driven pulleys 5.4.

FIG. 4 shows yet another embodiment of the device according to the invention. In this embodiment, the small pulley 21 and the large pulley 22 have the same diameter.3 However, the large pulley 22 Since the driven pulley 8 attached to the small pulley 21 is set to have a smaller diameter by a predetermined ratio α than the driven pulley 9 attached to the small pulley 21, the driven pulley 8 is rotationally driven from the common pulley 7 by the timing belt θ. When the large pulley 22 is
There is a reason why it rotates faster than j21 by the above ratio α. Of course, the F motion in this embodiment is exactly the same as that in the previous embodiment.

In this invention, as seen in the claims, the term "rotational circumference J" is introduced, which means the circumference of the pulley in its actual rotating state as described above, and Please note that the one with a long rotating circumference is called a large pulley. In other words, a 1-Lee pulley with a larger diameter and a larger actual circumference, or a pulley with the same diameter but a faster rotation speed and a longer feed length during the hoisting time is called a large Zuley, and a pulley that does not have the same diameter is called a large Zuley. The embodiment shown in FIG. 5 is the same as that shown in FIG. 3, and is designated as a small pulley.

However, each of the striatum W has a small pulley of 11 and a large pulley of 1.
The only difference is that it is guided downstream after passing around No. 2 once.

In order to carry out the method of this invention, apart from the device of this invention, conventional take-up capstans are arranged at two locations, upstream and downstream, and the take-up speed of the downstream capstan is adjusted at a predetermined ratio to the upstream capstan. Of course, it may be made larger than L.

(Effects of the Invention) According to this invention, the linear object is pulled by the difference in the respective take-up speeds between the upstream take-up position and the downstream take-up position, and in this case, The tensile force applied to the filament has the effect of effectively removing twists and bends in the filament. In addition, the device used is simply two pulleys located upstream and downstream of the running path of the striatum.
(In the first actual HD example, it is simple and low cost to be placed at one location, and this has a great advantage in combination with its effectiveness in removing the shape.)

[Brief explanation of drawings]

FIG. 1 shows a device according to an embodiment of the present invention (!!I sectional view, FIG. 2 is a sectional view of the bar wire shown in FIG. 1, and FIGS. 3 and 4 show another embodiment of the invention. Side sectional view shown, No. 5
The figure is a side sectional view showing an example in which the hanging direction of the wire body is changed in the embodiment shown in Figure 1, and Figure 6 is an extrusion coating process for electric wires shown to explain the reason why the wire body becomes curly. It is a simplified side 1-fold view showing lines. 1.11.12--Small pulley, 2, 12, 22...
- Large pulley, = l 5.8.9... Driven pulley, 7... Drive 1-Lee. Agent Patent Attorney Takeuchi 9 Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. The step of taking the filament (w) at one take-up speed (v), and the step of picking up the same filament at an arbitrary position downstream of the taking-up device at a predetermined rate from the take-up speed. A method for straightening a striatum, comprising a step of pulling the striatum at a pulling speed (1+α)v which is faster by a ratio (α) of . 2. Pulleys (1, 11, 2
1) and a large pulley (2, 12, 22,) that is disposed downstream from the arrangement position of the small pulley and has a rotational circumference that is longer than the rotational circumference of the small pulley by a predetermined percentage. A device for removing the straightness of striations. 3. The device for straightening a striated body according to claim 2, wherein the large pulley and the small pulley are fixed coaxially and integrally. 4. A patent claim characterized in that the large pulley and the small pulley have the same diameter, and the large pulley is driven to rotate faster than the small pulley by a predetermined ratio (α). A striatal body straightening device according to item 2.