JP2847174B2 - Wire measuring machine and its measuring method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire length measuring machine for extracting a specified amount of electric wire by a drum or a reel and cutting the same, and a method of measuring the same.

[0002]

2. Description of the Related Art Conventionally, a measuring method of an electric wire length measuring machine for extracting a desired length of a wire from a drum or a reel and measuring the length of the wire and cutting the wire, as shown in FIG. A counter or pulse generator 105 connected to a roller counts the amount of rotation and measures the length. As shown in FIG. 4, an arm 104 having a gripper 103 that reciprocates between predetermined distances has a specified length of electric wire. A method of intermittently pulling out is generally performed.

[0003]

The former method of measuring the length of an electric wire measuring machine described in the prior art has a simple structure, but the error in measuring the length depends on the difference in the method of pressing the rollers and the type of electric wire. The latter is liable to occur, and the latter has a problem in that the wire is pulled out only when the gripper reciprocates and moves in one direction, so that the wire is intermittently drawn, resulting in poor efficiency. The present invention has been made in view of these problems of the prior art, and has as its object to provide a wire measuring machine and a method for measuring the length of a wire with high efficiency and continuous drawing efficiency. It is something to offer.

[0004]

SUMMARY OF THE INVENTION An electric wire length measuring machine according to the present invention comprises two carriers for extracting electric wires which can be moved along guides provided in parallel on both sides of an electric wire extraction path freely wound. A gripper is provided on each of the two carriers so as to alternately grip the wire, and NC controlling drive means for reciprocating the two carriers at a set withdrawal amount to opposite sides is provided. A means for applying is provided, and a cutter is provided at the origin position of the movement of the carrier, and the electric wire is continuously and alternately actively pulled out by the two grippers, and the cutter is cut after the brake is applied upon completion of the length measurement. It was done. Claim 1
With wire length measuring machine according to the number of times N to draw gripping the wire alternately by the gripper when the one-way movement of the two carriers reciprocally moves in parallel to the opposite sides, wherein the desired withdrawn amount x determined from the predetermined stroke amount L of the wire length measuring machine using the following equation N = x / L, obtained N is an integer N ₁ rounded up decimals less when having a fractional ungated, the following equation each time withdrawn amount a a = X / N ₁ , and the carrier is alternately withdrawn a times N ₁ times a each time to extract the desired amount of wire x and simultaneously measure the length.

[0005]

In the NC device, the number of reciprocations and the stroke distance of the two carriers are obtained by calculation from the desired length of the wire in the NC device, and the wire is gripped by the gripper of one of the carriers and pulled out from the origin to the moving end. When the other carrier returns to the origin from the moving end, the electric wire is gripped by the gripper of the other carrier, and at the same time, the gripper of one carrier is opened. In this way, when the two carriers successively draw out the electric wire according to the determined conditions and reach the desired length, the movement of the carriers is stopped, and the length measurement ends at the same time.

[0006]

An embodiment will be described with reference to FIGS. Two carriers 2A and 2B are provided movably along two linear guides 1A and 1B provided in parallel. Vertical shafts 3A, 4A and 3B, 4B are rotatably supported near both ends outside the guides 1A, 1B, respectively, and sprocket wheels 5A, 6A and 5B, 6B are fitted to the upper ends of the respective vertical shafts. Have been. A chain 7A is stretched between the sprocket wheels 5A and 6A, and a chain 7B is stretched between the sprocket wheels 5B and 6B. Both ends of the chain 7A are in the carrier 2A, and both ends of the chain 7B are in the carrier 2A.
B. Further, servomotors 8A and 8B are concentrically connected to the vertical shafts 4A and 4B, respectively, and the rotation of the servomotors 8A and 8B is independently controlled by the NC device 9, respectively.

On the other hand, to the right of the center of the guides 1A and 1B, a drum 12 around which an electric wire 11 is wound is supported by a rotating shaft 13 of a stand (not shown).
It is provided rotatable in a vertical plane parallel to 1B. Further, a pair of electric wire guide rollers 14 are rotatably supported at the right end positions in the centers of the guides 1A and 1B. An electric wire holder 15 is provided on the left side of the guide roller 14 so as to be openable and closable, and is adjacent to the left side thereof. A wire cutting cutter 16 is attached. The cutting position of the cutter 16 is set at the movement origin A of the carriers 2A and 2B. An electric wire gripper 17 is provided on the carriers 2A and 2B.
A and 17B are mounted so as to face each other, and the grippers 17A and 17B pass between one of the opened claws so that the other claws (the ones holding the electric wire) pass each other. At the right end of the carrier, the gripper is adjusted so as to coincide with the origin A, and at the left end of the carrier, the gripper coincides with the position B on the left by a predetermined stroke amount L from the origin A. Has been adjusted.

Next, a first operation example of this embodiment will be described. The desired wire drawing amount x stored in the NC device 9 is called, and first, the number N of wire drawing of the carriers 2A and 2B at which the desired drawing amount x is obtained is obtained by the following equation N = x / L. Here, L is a predetermined stroke amount of the electric wire length measuring machine. When the obtained N has a decimal number, the fractional part is rounded up to an integer N1, and the withdrawal amount a for each time is obtained by the following equation a = x / N1. The withdrawal amount a thus obtained for each time a
Only the carriers 2A and 2B are reciprocated in opposite directions, and the gripper grips the wires alternately at the origin A, and continuously draws the wires N times. The length measurement is completed at the same time when the wire 11 is pulled out, and then the wire holder 15 is closed and the brake is applied. Then, the cutter 16 is closed and the wire is cut.

[0009]

[0010]

Since the present invention is configured as described above, the following effects can be obtained. The two carriers, each with a gripper, are alternately reciprocated to the opposite side by NC driving to continuously draw the wire and measure the length at the same time. The ability is doubled. In addition, since the wire is directly grasped by the gripper and pulled out, errors due to the shape and type of the wire are small, and the length measurement accuracy is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric wire length measuring machine according to the present embodiment.

FIG. 2 is a configuration diagram of an electric wire length measuring machine of the present embodiment.

FIG. 3 is an explanatory diagram showing a length measuring method using a conventional rolling roller.

FIG. 4 is an explanatory diagram showing a conventional method of intermittently measuring a length by a reciprocating motion of a gripper.

[Explanation of symbols]

1A, 1B Guide 2A,
2B carrier 7A, 7B chain 8A,
8B Servo motor 9 NC unit 17
A, 17B Gripper

Claims (2)

(57) [Claims] An electric wire movably along guides provided in parallel on both sides of a wire extraction path of a freely wound electric wire.
Two carriers for drawing out are provided, grippers are respectively provided on the two carriers so as to grip the electric wires alternately, and the two carriers are set on opposite sides to each other.
The driving means of NC control to reciprocate in discharge amount provided, blanking the wire
A means for applying rake is provided, and the carrier origin position
It is provided cutter location continuously exchange in two gripper
Braked at the completion of actively pull-out and measuring the each other wire
An electric wire measuring machine characterized by being configured to be cut by a cutter after cutting . 2. An electric wire measuring machine according to claim 1,
The number N of times that the gripper grips and pulls the wire alternately during the unidirectional movement of the two carriers that reciprocate in parallel to and reciprocate to the opposite side is determined by the desired pulling amount x and the predetermined stroke amount L of the wire measuring machine. When the obtained N has a decimal number, the decimal portion is rounded up to the next integer N.
₁ ungated, each time determined by the withdrawn amount a following equation a = x / N ₁ and a wherein the carrier is at the same time measuring the draw desired withdrawn amount x wires by drawing N ₁ times alternately each time by a Length measuring method of electric wire length measuring machine.