JPH0818442B2 - Winding machine for manufacturing multi-needle recording head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention uses a drum having winding grooves formed on a peripheral surface at a predetermined pitch, and an electrode wire is wound around the winding groove at a predetermined pitch. A winding machine for manufacturing a multi-needle recording head.

(Prior Art) Since a multi-needle recording head requires arranging an extremely large number of electrode wire rods at an extremely fine pitch, various contrivances have been made in its manufacturing method. Generally, a winding machine is used. The method of winding the electrode wire on the drum is adopted.
FIG. 8 shows an example of a conventional method for manufacturing a multi-needle recording head. A drum having winding grooves formed on the peripheral surface at a predetermined fine pitch and axial grooves 42 formed on the peripheral surface. Use 41. While rotating the drum 41 about its axis, the electrode wire 43 is sequentially wound a predetermined number of times around the winding groove on the circumferential surface of the drum 41. Next, a resin block is applied from above the groove 42, and in that state the groove 42
After the adhesive is poured into and cured with the resin block, the electrode wire is cut along one side surface of the resin block and removed from the drum 41. By doing so, one of the cut surfaces of the many electrode wire rods is arranged and appears at a predetermined minute pitch. As is well known, the other end side of each of the cut electrode wire members is wired in a matrix in a predetermined order of terminals of the printed circuit board.

(Problems to be Solved by the Invention) According to the above-described conventional method for manufacturing a multi-needle recording head, when the winding drum 41 and the winding machine are made of iron, the influence of temperature change is large, and the electrode wire material is predetermined. In some cases, it was impossible to wind the wire in the winding groove in a predetermined order. That is, when the length of the winding drum 41 is 1000 mm, the thermal expansion coefficient of iron is 11.7.
Since it is × 10 ^-6 , when the temperature rises 1 ° C, the total is 12 μm
It will be extended. However, the pitch of the winding groove is 0.127.
± 0.01 mm, and when attempting to wind an electrode wire with a diameter of about 0.0635 mm around this winding groove, if there is extension of the winding drum due to temperature changes as described above, It is impossible to correctly wind the electrode wire in a predetermined order.

In addition, when winding is completed on one winding drum, another winding drum is set on the winding machine and new winding is performed. It is necessary to keep the variation of ± 0.03mm or less, and the positional deviation when setting each drum in the winding machine to ± 0.01mm or less. Therefore, there is a problem that an extremely expensive winding drum and winding machine are required.

The present invention has been made in order to solve the problems of the prior art, and there are dimensional errors and dimensional variations in the winding drum and the winding machine, misalignment between the winding drum and the winding machine, and the like. Even if there is, it is an object of the present invention to provide a winding machine for manufacturing a multi-needle recording head in which the above influences are less likely to occur and, therefore, the electrode wire rod can be accurately positioned and fixed.

(Means for Solving the Problems) In order to achieve the above object, the present invention arranges a plurality of detected parts in a winding drum in an axial direction of the winding drum, and a holding member of a nozzle is wound. A detector that is movable in the axial direction of the wire drum and that detects the position of the detected part is provided, and the deviation between the nozzle and the winding drum is detected from the position output from the detector and the amount of rotation of the winding drum. Accordingly, a control unit for correcting the relative positional relationship between the nozzle and the winding drum is provided.

(Operation) Since the correspondence relationship between the plurality of winding grooves formed on the peripheral surface of the winding drum and the plurality of detected portions arranged in the axial direction of the winding drum is known in advance, the detector is the detected portion. The control unit corrects the relative position of the winding nozzle and the winding drum so that the electrode wire is wound around the winding groove corresponding to the position where the winding nozzle is detected.

(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, the winding drum indicated by reference numeral 1 has winding grooves 11 on the circumferential surface at a predetermined pitch in the axial direction. As shown in FIGS. 3 and 4, the winding grooves 11 are formed in two rows across a flat surface 19 formed in the axial direction on the circumferential surface of the winding drum 1. On the circumferential surface of the winding drum 1, a plurality of detected parts 12 are arranged in the axial direction of the winding drum 1 adjacent to one winding groove row. The detected part 12 may be any as long as it can detect these by some means, and can be formed of, for example, a hole or a magnet. In the case of the illustrated embodiment, it is constituted by a hole. The arrangement pitch of the detected portions 12 may be set arbitrarily, but for example, the pitch of the winding grooves 11 may be set.
If it is around 0.127 mm, the array pitch of the detected parts 12 is 90 to 1
It may be about 20 mm. On the peripheral surface of the winding drum 1, a plurality of rows of wiring terminal pins 15 for hooking and positioning the electrode wire material wound on the drum 1 are provided at appropriate positions. When the wiring terminal pin 15 is assembled as a head, the electrode wire 5 wound around the winding drum 1 can be easily connected to a terminal in a predetermined order on a printed circuit board, the other end of which is not shown with respect to the head exposed side. This is to enable wiring in a matrix, and the electrode wire rods 5 connected to the same terminal are put together using one electrode terminal pin 15.

A winding guide pin 25 is provided on the winding drum 1. The winding guide pin 25 guides the electrode wire 5 wound around the winding drum 1 to a position near a predetermined winding groove 11.

Further, an elastic body 16 such as rubber is fixed to the peripheral surface of the winding drum 1 so as to prevent the wound electrode wire rod from being displaced (see FIG. 4).

A spindle 10 is projectingly provided at 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 the bearing portion 18, and the center pushing portion is provided in the shaft hole.
17 conical shafts fit. The winding drum 1 is rotationally driven by a servomotor 31 via a speed reducer 32, a gear train 33, and a bearing portion 18. The servo motor 31 has an encoder 30. The servo motor 31, the speed reducer 32, and the like are supported by columns 34. The encoder 30 detects the rotational position of the servo motor 31, outputs it as a rotational position signal of the winding drum 1, and inputs it to the control unit 38.

A ball screw 6 and a spline shaft 7 are supported adjacent to and parallel to the winding drum 1. The ball screw 6 is rotationally driven by the servo motor 35. The servo motor 35 has an encoder 36. The encoder 36 outputs a rotation position signal of the servo motor 35, that is, a rotation position signal of the ball screw 6, and inputs it to the control unit 38. The ball screw 6 is screwed into the movable member 8 and penetrates the movable member 8. The movable member 8 also has a base 27 via a moving stage 29 in the X direction indicated by an arrow in FIG. 1, that is, in the axial direction of the winding drum 1.
Is held by

As shown in FIGS. 1 and 2, a cam 9 is arranged so as to be held by the movable member 8. The spline shaft 7 passes through the cam 9. The cam 9 can move along the spline shaft 7 and can rotate together with the spline shaft 7. A pulley 23 is integrally attached to the spline shaft 7. A pulley 13 having the same diameter as the pulley 23 is fixed to the winding drum 1, and a belt 24 is hung between the pulleys 13 and 23. Therefore, the cam 9 rotates in synchronization with the rotation of the winding drum 1.
A driven member 22 at one end of a holding member 20 rotatably supported by the movable member 8 about a shaft 21 is in pressure contact with the cam surface of the cam 9. A winding nozzle 2 is attached to the other end of the holding member 20 so as to face the peripheral surface of the winding drum 1, and a detector 3 for detecting the position of the detected portion 12 is provided. Is installed. When the detected part 12 is a hole, the detector 3 can be composed of an optical one, 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. it can. The detection signal of the detected portion 12 by the detector 3 is the nozzle 2 for the winding drum 1.
Is input to the control unit 38 as a relative position signal. Nozzle 2
The electrode wire rod 5 drawn from the electrode wire rod bobbin 4 is supplied to the winding wire drum 1 through the nozzle 2.
Is wound in order on the peripheral surface of and in the predetermined winding groove 11.

 Next, the operation of the above embodiment will be described.

It is assumed that when the detector 3 detects the Mth detected portion 12, the nozzle 2 is previously stored in the control unit 38 as the one that should correspond to the mth winding groove 11. Therefore, first, the ball screw 6 is rotationally driven by driving the servo motor 36 to move the movable member 8 to move the nozzle 2 to one end side of the winding drum 1, and then the servo motor 31 is driven to move the winding drum 1. The electrode wire 5 is wound in order from the winding groove 11 on one end side of the winding drum 1 at a predetermined pitch while being rotationally driven. When starting the winding, the detector 3 starts the winding from the winding groove 11 corresponding to this position on the basis of the position where the detected portion 12 at one end of the winding drum 1 is detected. 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 drives the servomotor 35 in accordance with the number of rotations of the winding drum 1 from the reference position to rotationally drive the ball screw 6 and move the nozzle 2 in the axial direction of the winding drum 1. .
Thus, as shown in FIG. 5, the electrode wire 5 is formed in each winding groove 11.
Are sequentially wound at a predetermined pitch.

As the electrode wire 5 is wound around the winding drum 1, the nozzle 2 is moved as described above, and when the electrode wire 5 is wound a certain number of times, for example, 150 to 500 times, it is mounted in the vicinity of the nozzle 2. The detector 3 detects another detected portion 12 which is arranged in advance at a predetermined arrangement pitch. In this embodiment, the detected part
If a hole as shown in FIG. 7 is used as 12 and an optical detector including a light emitting portion and a light receiving portion is used as the detector 3, for example, one edge of the detected portion 12 is The correspondence is set so as to be located at the center of the corresponding one winding groove 11. Therefore, when the detector 3 detects the detected part 12, the control part 38 determines based on the signal from the encoder 30 whether or not the winding drum 1 is rotationally driven by the amount corresponding to the detected part 12, and the correspondence relationship is determined. If there is a deviation, the servo motor 31 is driven to correct the deviation.
On the contrary, when the detection position of the detected portion 12 by the detector 3 is deviated from the predetermined rotation speed signal of the winding drum 1 from the encoder 30, the servo motor 35 is controlled to detect the detector. The ball screw 6 is rotationally driven to a position where 3 detects a predetermined detected portion 12.

In this way, each time the detector 3 detects the detected portion 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 if there is a dimensional error in processing on both sides, or if there is a deviation in the mounting position of the winding drum 1, the winding groove will always have the correct winding groove.
The electrode wire 5 is wound around 11.

In the illustrated embodiment, the cam 9 rotates in synchronism with the rotation of the winding drum 1, and accordingly, the nozzle 2 and the detector 3
The holding member 20 to which is attached swings. This is because the peripheral surface of the winding drum 1 is not a circle but is formed in an irregular polygonal shape. Therefore, even if the winding drum 1 rotates, the circumferences of the nozzle 2 and the detector 3 and the winding drum 1 are reduced. This is to keep the distance from the surface constant.

In addition, in order to correctly and efficiently wire a large number of electrode wire rods 5 wound around the winding drum 1 in a matrix,
As shown in the figure, the windings in a predetermined order are hooked on predetermined wiring terminal pins 15 for positioning.

When the winding is completed in this way, the electrode wire 5 is fixed with an adhesive or resin on the flat surface 19 in the middle of the row of the winding grooves 11 forming the pair of the winding drum 1. FIG. 6 shows this state, and the electrode wire rods 5 are arranged at a predetermined pitch.
The area around is hardened with resin 40.

In the illustrated embodiment, the winding drum 1 has a polygonal cross-sectional shape, but may have a circular shape.

(Effects of the Invention) According to the present invention, a plurality of detected parts are arranged in the winding drum in the axial direction of the winding drum, and the holding member of the nozzle is made movable in the axial direction of the winding drum. A detector that detects the position of the detected part is provided for the nozzle holding member, and the deviation between the nozzle and the winding drum is detected from the position output from the detector and the amount of rotation of the winding drum. Since the control unit that corrects the relative positional relationship of the drum is provided, it is possible to advance the winding while correcting the relative positional relationship between the winding drum and the winding machine each time the detector detects the detected part. , Even if the relative positional relationship between the winding drum and the winding machine is deviated due to temperature change, or there is a dimensional error in processing on both, or the mounting position of the winding drum is deviated, The electrode wire can always be wound correctly in the specified winding groove. . Further, since it is not necessary to increase the accuracy of the winding drum and the winding machine, it is possible to provide an inexpensive winding machine for manufacturing a multi-needle recording head.

[Brief description of drawings]

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 side view of the same, and FIG. 3 is a perspective view of a winding drum in the above embodiment. 4 is a side view of the above winding drum, FIG. 5 is an enlarged sectional front view showing the state of the winding according to the above embodiment, and FIG. 6 is a sectional front view showing the state of the treatment of the electrode wire after the winding. FIG. 7 is a sectional front view showing the relationship between the winding groove, the detected portion 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 rod, 11
…… Winding groove, 12 …… Detected part.

Claims (1)

[Claims] 1. A winding drum having a winding groove formed at a predetermined pitch on a peripheral surface thereof, and a winding nozzle for winding an electrode wire material in the winding groove at a predetermined pitch on the winding drum. In the winding machine for manufacturing a multi-needle recording head, a plurality of detected parts are arranged on the winding drum in the axial direction of the winding drum, and the holding member of the nozzle moves in the axial direction of the winding drum. A detector for freely detecting the position of the detected portion is provided, and the deviation between the nozzle and the winding drum is detected based on the position output from the detector and the rotation amount of the winding drum. A winding machine for manufacturing a multi-needle recording head, comprising a control unit that corrects a relative positional relationship between a nozzle and the winding drum.