JPH03161362A - Wire winding machine for multi-needle recording head manufacture - Google Patents

Abstract

PURPOSE:To make it possible to position and fix electrode wire material accurately by providing a detector for determining the position of a detected part in a movable manner in the axial direction of a wire winding drum. CONSTITUTION:For example, one edge of a detected part 12 is set in relation to a corresponding one wire winding groove 11 so that the former is located in the center of the latter. Then a control part 38 interprets whether a wire winding drum 1 is driven to rotate by an amount corresponding to the detected part 12 based on a signal from an encoder 30, if the detected part 12 is detected by a detector 3. If the relationship between said one edge and the center of the wire winding groove 11 is offset, the offset amount is corrected by driving a servo motor 31. Contrarily, if the position of the detected part 12 is found to be offset by the detector 3 when a signal for a specified number of rotations is connected to the wire winding drum 1 by an encoder 30, the servo motor 35 is controlled to drive ball screw 6 to rotate to a specified position where the detected part 12 is detected by the detector 3.

Description

Detailed Description of the Invention (Industrial Application ffF) The present invention uses a drum having winding grooves formed on its circumference at a predetermined pitch, and electrode wires are arranged in the winding groove at a predetermined pitch. The present invention relates to a winding machine for manufacturing a multi-needle recording head.

(Prior Art) Multi-needle recording heads require a very large number of electrode wires to be arranged at very small pitches, so various improvements have been made to the manufacturing method. A method has been adopted in which the electrode wire is wound around a drum using a drum. 8th
The figure shows an example of a conventional method for manufacturing a multi-needle recording head, in which winding grooves are formed on the circumferential surface at a predetermined minute pitch, and
A tram 41 having an axial groove 42 formed on its circumferential surface is used.

While rotating the drum 41 around its axis, the electrode wire 43 is sequentially wound a predetermined number of times in the winding groove on its circumferential surface. Next, a resin block is applied from above the groove 42, and in this state, adhesive is poured into the groove 42 and cured together with the resin block, and then the electrode wire is cut along one side of the resin block, and the tram 41 remove from By doing this, one of the cut surfaces of a large number of electrode wires is arranged at a predetermined minute pitch and is cursed. As is well known, the other end of each cut electrode wire is wired in a matrix to terminals in a predetermined order on a printed circuit board.

(Problems to be Solved by the Invention) According to the above-mentioned conventional method for manufacturing a multi-needle Me recording head, when the winding drum 41 and the winding machine are made of iron, the influence of temperature changes is large and the electrode wire material is In some cases, it was impossible to wind the wire in a predetermined order in a predetermined winding groove. That is, if the length of the winding drum 4l is 1000 mm, the coefficient of thermal expansion of iron is 11.7X 10-', so the temperature is L°C.
If it rises, the total garden will be extended by 12μ. However, the pitch of the winding groove is 0.127±0.01 mm,
When winding an electrode wire with a diameter of about 0.0635 mm in this winding groove, as described above, f. If the winding drum stretches due to changes in NA, it is impossible to correctly wind the electrode wire in a predetermined order in a predetermined winding groove.

In addition, when winding is completed on one winding drum, another winding drum is set in the winding machine and new winding is performed, but at that time, the winding grooves are cut between each winding drum. It is necessary to keep the variation within ±0.03+am, and the positional deviation when setting each drum on the winding machine must also be kept within ±0.
．． Since it is necessary to suppress the winding to 0.01 mm or less, the winding drum and the winding machine must be made with high precision, which poses the problem of requiring extremely expensive winding drums and winding machines.

The present invention has been made in order to solve the problems of the conventional technology, such as dimensional errors and variations in the winding drum and winding machine, and misalignment between the winding drum and the winding machine. Even if there are such things, do you have to be influenced by these things? The object of the present invention is to provide a winding machine for manufacturing a multi-needle head that can accurately position and fix a la pole wire material.

(Means for Solving the Problems) The present invention rearranges a plurality of detected parts in the axial direction of the winding drum, and moves a detector for detecting the position of the detected parts in the axial direction of the winding drum. The feature is that it is possible. (Function) Since the correspondence between the plurality of winding grooves formed on the circumferential surface of the winding drum and the plurality of detected parts arranged in the axial direction of the winding drum is known in advance, the detected word can be easily detected. The relative positions of the winding drum and the winding machine are adjusted so that the electrode wire is wound in the winding groove corresponding to the detected position.

(Example) Hereinafter, an example of a winding machine for manufacturing a multi-needle recording head according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 4, a winding drum designated by reference numeral 1 has winding grooves 11 on its circumferential surface at a predetermined pitch in the axial direction. As shown in FIGS. 3 and 4, the winding grooves 1l are formed in two rows on the circumferential surface of the winding drum 1, sandwiching a flat surface 19 formed in the axial direction. A plurality of detected portions l2 are arranged on the circumferential surface of the winding drum 1 in the axial direction of the winding drum l adjacent to one of the winding groove rows. The detected portion l2 may be any means as long as it can be detected by any means; for example, it may be a hole or a magnet.

In the illustrated embodiment, this is a hole. Although the arrangement pitch of the detected parts 12 may be set arbitrarily, for example, if the pitch of the winding grooves 11 is about 0.127+sa, the arrangement pitch of the detected parts 12 may be about 90 to 120ve. A plurality of rows of wiring terminal pins 15 are provided at appropriate positions on the circumferential surface of the winding drum 1 for hooking and positioning the electrode wire wound around the drum 1. When assembling the wiring terminal bin 15 as a head, the electrode wire 5 wound around the winding drum 1 can be easily connected to terminals on the other end side of the head exposed side or on the printed circuit board (not shown) in a predetermined order. The electrode wires 5 connected to the same terminal are grouped together using one electrode terminal pin 15.

Further, a winding guide pin 25 is provided on the winding drum l. The winding guide pin 25 guides the electrode wire 5 to be wound around the winding drum 1 to a position near a predetermined winding groove l↓.

Furthermore, a flexible material 16 such as rubber is fixed to the circumferential surface of the winding drum 1 to prevent the wound electrode wire from shifting (see FIG. 4).

A support shaft 10 is protruded from one end of the winding drum 1, and a shaft hole is formed at the other end of the winding drum 1.

The support shaft 10 is supported by a bearing portion 18, and the conical shaft of the center push portion 17 is fitted into the shaft 6. The winding drum ↓ is rotated by a servo motor 31 via a reduction gear 32, a gear train 33, and a bearing 18. The servo motor 31 has an encoder 30. The servo motor 31 and the reducer 32 are supported by struts 34. The encoder 30 detects the rotation position of the servo motor 31, outputs this as a rotational position signal of the winding drum 1, and inputs it to the control section 38.

A ball screw 6 and a spline shaft 7 are supported adjacent to and parallel to the winding tram 1. The ball screw 6 is rotated by a servo motor 35. Servo motor 35
has an encoder 36. The encoder 36 indicates the rotational position of the servo motor 35 {! ．． p), that is, a rotational position El signal of the ball screw 6 is output and input to the control section 38. The ball screw 6 is screwed into the movable member 8 and passes through the movable member 8. The movable member 8 is also held by a base 27 via a stage 25 for movement in the X direction shown by the arrow in FIG. t, that is, in the axial direction of the winding drum 1.

As shown in FIGS. 1 and 2, a cam 9 is arranged so as to be held by the movable member 8. As shown in FIGS.

The spline shaft 7 passes through the cam 9. force ls
9 can move along the spline axis 7 and can rotate 191 with the spline axis 7.

A boob 23 is integrally attached to the spline shaft 7. Also on the winding drum ↓ is a pulley 1 with the same diameter as the above boley 23.
3 is firmly fixed, and a belt 24 is hung between these pulleys 13 and 23. Therefore, the cam 9 rotates in synchronization with the rotation of the winding tram 1. In the cam direction of cam 9,
A driven member 22 at one end of a holding member 20 rotatably supported around a shaft 21 is in pressure contact with the movable member 8 . A winding nozzle 2 is housed at the other end of the holding member 20 so as to face the circumferential surface of the winding truck ts1, and
A detector 3 is attached to detect the position of the detection section 12. When the detected part 12 is a hole, the detector 3 can be composed of an optical device, for example, a light emitting part and a light receiving part, and when the detected part 12 is a magnet, it can be composed of an appropriate magnetic sensor. Can be done. A detection signal of the detected portion 12 by the detector 3 is input to the control unit 38 as a relative position signal of the nozzle 2 with respect to the winding drum 1. Nozzle 2
The electrode wire 5 drawn out from the electrode wire bobbin 4 is supplied to the winding drum 1 through the nozzle 2.
is wound in order around the circumferential surface of the wire and in a predetermined winding groove l1.

Next, the operation of the Kamikita embodiment will be explained.

It is assumed that the control unit 38 stores in advance that the nozzle 2 corresponds to the m-th winding groove 11 when the detector 3 detects the M-th detected portion 12. Therefore, first, the ball screw 6 is rotated back and forth by the operation of the servo motor 36 to move the movable member 8, and the nozzle 2 is moved to one end side of the winding drum 1. Next, the heel movement of the servo motor 31 moves the nozzle 2 to the one end side of the winding drum 1. While actively rotating the drum 1, the electrode wire 5 is wound at a predetermined pitch starting from the winding groove 11 at one end of the winding drum 1. To start winding, the winding is started from the winding groove 11 corresponding to the position where the detector 3 detects the detected portion 12 at one end of the winding drum l. The rotational position {No. IIi of the winding drum 1 and the position signal of the nozzle 2 accompanying the rotation of the ball screw 6 are stored in the control unit 38 to which the detection signals of the encoder 30 and the encoder 36 are input. Therefore, the control unit 38 controls the servo motor 35 in accordance with the number of rotations of the winding drum l from the reference position.
is rotated, and the ball screw 6 is rotated to move the nozzle 2 in the axial direction of the winding drum 1. In this way, each winding groove 11
As shown in FIG. 5, the electrode wires 5 are sequentially wound at a predetermined pitch.

As the 1t electrode wire 5 is wound around the winding drum 1, the nozzle 2 is moved as described above, and when the electrode wire 5 has been wound a certain number of times, for example 150 to 500 times, it is attached near the nozzle 2. The detectors 3 detect other detected parts 12 arranged in advance at a predetermined arrangement pitch. In this embodiment, a hole as shown in FIG. 7 is used as the detected part ↓2,
Assuming that an optical detector consisting of a light emitting part and a light receiving part is used as the detector 3, for example, the detected part 12
The correspondence relationship is set such that one edge of is located at the center of one corresponding winding groove l1. Therefore, when the detector 3 detects the detected part 12, the control unit 38 uses {+:T'S> from the encoder 30 to indicate whether or not the winding drum 1 has been rotated by the corresponding amount. If there is a deviation in the correspondence relationship, the servo motor 31 is actuated to correct the deviation. Or, conversely, if the detection position of the detected part 12 by the detector 3 is shifted based on the predetermined rotational speed signal of the winding drum 1 from the encoder 30, the servo motor 35 is controlled to detect the detected part 12. Vessel 3
The ball screw 6
It rotates. In this way, each time the detector 3 detects the detected part 12, the winding is advanced while correcting the relative positional relationship between the winding drum 1 and the nozzle 2. Even if there is a deviation in the relative positional relationship with the winding machine, or even if there is a dimensional error due to processing on both sides, or there is a deviation in the mounting position of the winding drum 1, the winding drum 1 will always be wound correctly.
The electrode wire 5 is wound around the A groove 11.

In the illustrated embodiment, the cam 9 rotates in synchronization with the rotation of the winding drum 1, and accordingly, the nozzle 2 and the detection ft3
The holding member 2o to which is attached swings. This is because the circumference of the winding drum 1 is not a circle but an irregular polygon, so even if the winding drum 1 turns, the nozzle 2
This is also to keep the distance between the detector 3 and the circumferential surface of the winding drum 1 constant.

In addition, in order to correctly and efficiently wire a large number of electrode wires 5 wound around the winding drum 1 in a matrix, as shown in FIG. The position is determined by hooking it onto the terminal pin 15.

When the winding is completed in this manner, the electrode wire 5 is hardened with adhesive or resin at the y holder 19 located between the pairs of winding grooves 1 on the winding drum 1. Figure 6 shows this situation, in which the electrode wires 5 arranged at a predetermined pitch are hardened with resin 4o. In the illustrated embodiment, the cross-sectional shape of the winding drum 1 is polygonal, but it may also be circular.

(Effects of the Invention) According to the present invention, a plurality of detected parts are arranged in the axial direction of the winding drum, and a detector for detecting the position of the detected parts is arranged in the axial direction of the winding drum. Because it was designed to be movable,
Winding can proceed while correcting the relative positional relationship between the winding drum and the winding machine each time the detector detects the detected part, and the relative positional relationship between the winding drum and the winding machine can be adjusted due to temperature changes. Even if there is a misalignment in the positional relationship, a dimensional error due to processing on both sides, or a misalignment in the mounting position of the winding drum, the electrode wire can always be wound correctly in the designated winding groove. be able to. Furthermore, since there is no need to increase the viscosity of the winding drum and the winding machine, it is possible to provide an inexpensive winding machine for manufacturing multi-needle recording heads.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a winding machine for manufacturing a multi-needle recording head according to the present invention, FIG. 2 is a top side view of the same, and FIG. 3 is a perspective view of a winding drum in the above embodiment. FIG. 4 is a side view of the same winding drum as described above, FIG. 5 is an enlarged sectional front view showing how the wire is wound according to the above embodiment, and FIG. 6 is a sectional front view showing how the electrode wire is processed after winding. FIG. 7 is a cross-sectional front view showing the relationship between the winding groove, the detected part, and the detector in the above embodiment;
FIG. 8 is a perspective view showing an example of a conventional winding machine for manufacturing a multi-needle recording head. 1... Winding drum, 3..., Detector, 5...
...electrode wire, 11...winding groove, 12...
Detected part. Figure 7 Figure 2 Figure 4 Figure 3 Figure 8

Claims (1)

[Claims] A winding machine for manufacturing a multi-needle recording head, which has a winding drum in which winding grooves are formed at a predetermined pitch on the circumferential surface, and winds electrode wires at a predetermined pitch in the winding groove. In the winding drum, a plurality of detected parts are arranged in the axial direction of the winding drum, and a detector for detecting the position of the detected parts is provided movably in the axial direction of the winding drum. A winding machine for manufacturing multi-needle recording heads.