JPS61209722A - Wire coiler for extruding press - Google Patents

Abstract

PURPOSE:To better aligned winding of wires by controlling a number of revolution of a coiler body in response to a diameter of a wire winding part. CONSTITUTION:An extrusion speed V2' of a wire extruded by a stem 1 is detected by a speed detector 6 and is sent to an arithmetic and control unit 8. A rotating angle theta of the shaft of a driving motor 10 of the coiler body 9 is detected by a pulse generator 11 and is sent to the unit 8. A maximum and a minimum winding radii R0 and R1 for the body 9 and a wire diameter (d) are set in the unit 8 previously. The unit 8 operates a command number of revolution NREF based on input signals of the speed V2' and the angle thetaand sends a signal of the speed NREF to a D/A converter 14, 15, and driver 16 of the motor 10 so that a number of revolution of the motor 10 is controlled to be a specified value. A command signal from the comparator 15 is stopped when the signal from the controller 8 to the comparator 15 equals to the signal from a tachogenerator 12. Such a constitution betters aligned winding of wires.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for spirally winding a wire rod continuously extruded from an extrusion press onto a coiler body. [Prior Art] When winding a wire rod continuously extruded from an extrusion press into a coiler body in a spiral manner, the circumferential speed of the coiler body is adjusted in accordance with the extrusion speed of the wire rod extruded from the extrusion dance and the diameter of the wire winding portion of the coiler body. need to change. For this reason, a coiler device as shown in, for example, Japanese Patent Publication No. 48-42344 has been proposed.

The conventional device is shown in FIG. 2, and detects the extrusion speed v1 of the stem (1) by an appropriate means, and determines the theoretical extrusion speed V! of the wire (2). is determined, and the theoretical extrusion speed V! is used as the input value for controlling the wire winding section. here,
DI is the inner diameter of the extrusion press cylinder, and crow is the mold hole (3)
is the inner diameter.

[Problem that the invention seeks to solve]

However, in the above-mentioned apparatus, the internal diameter of the entire mold hole (3) changes due to thermal changes and wear, so the actual extrusion ratio changes, and as a result, the theoretical extrusion speed V! There was a problem that the speed of the wire rod (2) and the actual speed of the wire rod (2) did not match, and that the aligned winding of the wire rod could not be made in a good condition.

The present invention has been made in view of the above-mentioned circumstances, with the object of making it possible to wind wire rods continuously extruded from an extrusion press into a good shape.

[Means for solving problems]

The present invention provides an extrusion press that extrudes a wire material through a stem to form a wire rod, which includes a coiler body for spirally winding the extruded wire rod, a driving means for driving the coiler body, and a coiler body for spirally winding the extruded wire rod, a driving means for driving the coiler body, and a coiler body for winding the extruded wire rod in a spiral shape. a speed detector that detects the speed; a rotation angle detector that detects the rotation angle of the rotating body at a required position in the drive system from the drive means to the coiler body; and a signal from the rotation angle detector and the speed detector. An arithmetic control device is provided which calculates the rotational speed of the driving means at a predetermined rotation angle based on the rotational speed of the driving means and controls the rotational speed of the driving means.

[Function] Therefore, in the present invention, the rotation speed of the coiler body is controlled according to the wire winding section set, and as a result, the wire is wound in an aligned manner.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows an embodiment of the present invention, which shows the mold hole of an extrusion press (
3) A speed detector (6) consisting of, for example, an optical fiber probe (4) and a detection processing section (5) is disposed in front, and the extrusion speed v of the wire rod (2) detected by the speed detector (6) is : so that it can be sent to the arithmetic and control unit (8).

A pulse generator (lI) and a tachogenerator α are installed on the shaft of the electric motor QlO for driving the coiler body (9).
The rotation angle of the motor shaft detected by the pulse generator αυ, that is, the rotation angle θ of the coiler body (9)
The signal is sent to the arithmetic control unit (8) via the numerical conversion circuit αJ.
The arithmetic and control unit (8) can output a numerical conversion circuit α hot water heliset command.

A D/D converter that converts the command rotation speed NREF signal calculated by the arithmetic and control unit (8) from a digital signal to an analog signal.
A converter I is provided, and a comparator α9 is provided to compare the signal from the D/A converter α with the feedback signal of the rotation speed of the electric motor α detected by the tacho generator α. The output signal from the motor can be outputted as a command signal to the motor al through a motor driver such as a thyristor.

When starting to wind the wire rod (2), the maximum winding radius R6 and the minimum winding radius of the wire rod (2) with respect to the coiler body (9) =
The diameter d of the R1,1 wire (2) is set.

The wire rod (2) extruded and formed by the stem (1) is rotated by the coiler body (9) by the electric motor Ql.
At this time, the following control is performed. That is, the wire rod (2) extruded from the extrusion press
The extrusion speed v: is detected by the speed detector (6) and sent to the arithmetic and control unit (8), and the rotation angle θ of the shaft of the electric motor aO is detected by the pulse generator αυ and calculated via the numerical conversion circuit α. It is sent to the control device (8). The arithmetic and control unit (8) calculates the take-home radius R at the rotation angle θ.
(θ) is calculated by θ R(=R5+-0TX d ...-(1) or one of the following formulas, and from the result,
The commanded rotational speed NRIP is calculated based on the commanded rotational speed NRIP, and the commanded rotational speed NREF obtained by equation (iii) is sent from the D/A converter 11 comparator (I!9 to the motor driver!11! is controlled to a predetermined value.The signal sent from the arithmetic and control unit (8) to the comparator (1!9) and the cocienator a
When the signals sent from z to the comparator α become equal,
Since the electric motor is at a predetermined rotation speed, the comparator (l
! From 9 onwards, the command signal is no longer output. In the above formula (1
) formula is used when the wire (2) is wound from the inside to the outside of the coiler body (9), and formula (ii) is used when the wire (2) is wound from the outside to the inside of the coiler body (9). Used when being rolled up.

When the wire rod (2) finishes winding one layer, the numerical conversion circuit (I:
1 is reset by a command from the arithmetic and control unit (8), and the rotation angle θ is counted from zero.

In the embodiment of the present invention, the rotation angle is detected at the motor shaft, but the rotation angle of the rotating body detected at any position in the drive system from the electric motor to the coiler body can be multiplied by the reduction ratio. Of course, it is possible to convert the rotation angle of the coiler body into the rotation angle of the coiler body, and that various other changes can be made without departing from the gist of the present invention.

〔Effect of the invention〕

According to the wire rod coiler device in an extrusion press of the present invention, it is possible to wind the wire rod in a predetermined shape and size in an orderly manner, and it is possible to achieve the excellent effect of being able to perform well-aligned winding.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a conventional example. In the figure, +11 is the stem, (2) is the wire, (3) is the mold hole,
(6) is the speed detector, (8) is the arithmetic and control unit, (9) is the coiler body, the figure is the electric motor, (I indicates the pulse generator)

Claims (1)

[Claims] 1) In an extrusion press that extrudes material to form a wire rod using a stem, a coiler body that spirally winds the extruded wire rod, a drive means that drives the coiler body, and a speed of the extruded wire rod are detected. a rotation angle detector that detects the rotation angle of the rotating body at a desired position in the drive system from the drive means to the coiler body; 1. A wire coiler device comprising: a calculation control device that calculates the number of rotations of the drive means at a rotation angle of , and controls the number of rotations of the drive means.