JPS61203068A - Specific length feeding method for wire and cable - Google Patents

Abstract

PURPOSE:To determine accurate feed length by calculating the feed length with such factors taken into consideration as not only the rotating amount of a drive roller but also radius of pinch roller and its rotating amount, and thereby canceling possible error due to outside dia. or thickness of the wire. CONSTITUTION:A wire W is wound one and a half turn on a drive roller 2 of radius R and sent toward a receptacle 4 in which the wire is accommodated in specific lengths. At this time the wire w is pressed to the outside cylindrical part of the drive roller 2 using a pinch roller 3 of radius r to ensure that payoff is made without slip. In such paying off of wire, the specific length L as defined by N turns of drive roller 2 and n turns of pinch roller 3 is calculated by the use of the formula L=pi(RN+rn), which should provide accurate determination of the feed length.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is a method for delivering a single striatum to a fixed length, particularly for delivering a striatum in fixed lengths from a striatum delivery device to a destination where the striatum is used downstream. This invention relates to a method for delivering a fixed length of the striatum.

(Prior Art and its Problems) A conventional method for delivering a fixed length of a striatum will be explained with reference to FIGS. 2 to 4G.

One method is to grip the filamentous body W using a gripping cylinder 9, as shown in FIG. 2, and then send the gripping cylinder 9 out through a feeding cylinder 81 downstream. In this case, the fixed length of the six stripes is set by the distance 1 from the stopper IOA located at the starting end of the stroke of the feed cylinder 8 to the stopper IOB at the same end.

In this method, the length to be set is
If the stroke is longer than , the feed cylinder 8 must be repeatedly stroked, and the stopper must be moved and fixed each time to set a fixed length, which is troublesome.

Another conventional method, as shown in FIG. This is a method of sending out a fixed length of the strip W.

However, in the case of this method, slippage is likely to occur between the filament W and the outer circumference of the drive roller 2, and the stiffness causes an error in measuring the width, and the squeezing force of the filament must be increased to avoid stones. There is a risk of damage to the striatum.

As an improvement method of this conventional method, as shown in FIG.
There is also a method of increasing the contact area between the filament body W and the drive roller 2 by wrapping it less than once around the strand W, but in this case, since the traveling locus of the filament body becomes an arc, the outer diameter of the filament body is had the disadvantage that it was difficult to accurately measure the actual length when the thickness changed.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method in which a linear body whose length is to be measured is wound less than once around a drive roller having a radius of approximately r, and a pinch roller having a radius r The running length L of the filament is determined by the rotation speed N of the drive roller and the rotation speed n of the pinch roller. This invention provides a method for delivering a constant length of the striatum, which is characterized by calculating and determining π(l(,N-1-rn).

(Function) It is difficult to calculate the feed length of the filament simply by the amount of rotation of the drive i + cj + the roller, but since the pinch roller 44 and the amount of rotation are also considered, errors due to the outer diameter or thickness of the filament can be calculated. It is possible to calculate and determine accurate delivery (7 lengths) by erasing .

(actual gun example) The method of the invention will be explained with reference to FIG.

The filament W sent out from the filament delivery device 1 is changed direction by passing through the guide roller 5, and after being turned around approximately half of the outer circumference of the drive roller 2, the filament W is fed out from the filament delivery device 1, and then the filament W is moved around the outer peripheral part of the drive roller 2 for approximately half the circumference. A fixed-length strip like this is fed toward the feeding destination part 4. A pinch roller 3 is installed outside the drive roller 2.
The arranging ribs 2 act to press the filament W against the outer periphery of the drive roller 2 to ensure contact therewith.

Actually, the arrangement of each roller described here is the same as the conventional method explained with reference to FIG. A feature of the present invention is that it takes into consideration the rotational speed of the engine.

Now, considering the numbers in Figure 1, the radius of the drive roller 2 and the pinch roller 3 is R and r1, respectively. The outer diameter of the wire body W (thickness if the wire body is like a tape wire) is t.
Assuming that when feeding a fixed length, the drive roller 2 rotates N times and the pinch roller 3 rotates N times, the actual feed amount of the filament W is determined by that of the center line in the thickness direction. Focusing on the drive roller 2, L=2π(R+t/2)N... (1) Since the pinch roller 3 rotates l times during this period, 2yr r
n = 2π (R + t ) N - (2) (1), if t is deleted from equation (2), L = x (RN + r n
) - (3) Therefore, if you know this rotation speed R, you can calculate and determine the feed length 2CL from equation (3).Of course, the values such as this rotation speed R are limited to integers, and values smaller than ■ It may be.

In order to actually measure the rotational speed R and r of the drive roller 2 and pinch roller 3, as shown in FIG. All you need to do is attach a measuring device.

By knowing the above-mentioned value of R for the fixed length of the feed-out in advance and controlling the rotation of the drive roller 2 using a microcomputer, for example, it is possible to accurately and easily feed out the filament of the desired fixed length. , and can be executed repeatedly.

(Effects of the Invention) This invention has the effect that the feeding length can be accurately determined by the rotational speed of the drive roller and pinch roller, which is easy to measure, regardless of the outer diameter or thickness of the filament. By controlling the rotational speed of the inverted rotational drive roller, there is an effect that feeding out a fixed length of the filament can be carried out accurately and simply by using a microcomputer or the like.

[Brief explanation of drawings]

FIG. 1 is a simplified diagram illustrating an embodiment of the present invention, and FIGS. 2 to 4 are similar diagrams illustrating each conventional technique. 1...@Sei body delivery device, 2... Drive roller, 3...
・Pinch roller, W・ Striatum

Claims (1)

[Claims] The linear body (w) whose length is to be measured is moved by a driving roller (with radius R).
2), wrap it less than once around the pinch roller (3
) to prevent slippage between the three members, and the running length (L) of the linear body is determined by the number of rotations (N) of the drive roller and the number of rotations (n) of the pinch roller. ), L=π(RN+rn).