WO2018078759A1 - Needle advancing/retracting means and winding machine - Google Patents

Abstract

[Problem] To provide a needle advancing/retracting means and a series winding-type winding machine comprising said needle advancing/retracting means, wherein the alignment accuracy of a wound coil wire can be maintained at a high level even when a needle is made to circle around magnetic pole teeth at a high speed. [Solution] This needle advancing/retracting means that constitutes a series winding-type winding machine is positioned such that a servo motor for needle advancing/retracting motion is not affected by a mechanism for circling motion. The needle advancing/retracting means is structured such that rotational motion of the servo motor is transmitted by a shaft body and converted to a motion that oscillates an outer cylinder, an intermediate cylinder is positioned between the outer cylinder and an inner cylinder, and a phase difference is produced between the inner cylinder and the outer cylinder due to the oscillating motion that was transmitted only to the outer cylinder.

Description

Needle advance / retreat means and winding machine

The present invention provides a thin cylindrical body (hereinafter referred to as a coiled tube) for sending a coil wire so as to simultaneously wind the coil wire around a plurality of magnetic pole teeth from the inner diameter side of a stator core having an annular cross section provided on the inner surface with a plurality of magnetic teeth. The present invention relates to a needle advancement / retraction means and a series winding machine for advancing and retreating a needle. Specifically, even if the needle is rotated around the magnetic teeth at high speed, the needle advancement / retraction means capable of maintaining high alignment accuracy of the wound coil wire, and the direct winding type provided with the needle advancement / retraction means It relates to a winding machine.

According to the direct winding type winding machine, the needle is wound by combining the reciprocating linear motion along the axial direction and the reciprocating rocking motion along the circumferential direction, and winds the coil wire around the magnetic teeth. I am letting. Further, each time the coil wire is rotated around the magnetic pole teeth, the needle is advanced and retracted in the radial direction with the size of one coil wire, and the coil wire is wound in an orderly manner on the magnetic pole teeth.

As a technique for advancing and retracting the needle, a plurality of needles are formed by stacking a disk having a cam plate formed by engraving a spiral cam groove and a disk in which a needle provided with a cam follower is slidably arranged in the radial direction. A technology for advancing and retreating a beam radially is known. The two discs are individually supported rotatably by the outer cylinder and the inner cylinder for guiding the coil wire, and the needle is not advanced or retracted when there is no phase difference between the rotation of the outer cylinder and the inner cylinder. In a state in which the needle is generated, the needle is advanced and retracted.

As one of the techniques for generating a phase difference in the reciprocating motion of the outer cylinder and the inner cylinder, Patent Document 1 discloses a technique for rotating the inner cylinder and the outer cylinder via two timing belts. Yes. One of the two timing belts is circulated through a movable pulley. By changing the position of the movable pulley, the path followed by the timing belt hooked on the movable pulley is changed, and a phase difference is generated between the inner cylinder and the outer cylinder.

However, although the timing belt has an occlusal groove on its inner surface, the timing belt has a long timing belt and is easy to loosen. There has been a problem that the phenomenon that the shift is likely to occur and the timing at which the phase difference is generated is likely to be incorrect. According to this technique, in order to prevent the occurrence of the occlusal groove of the timing belt, it is not possible to rotate the timing belt at a high speed and it is difficult to increase the alignment accuracy of the coiled coil wire. There was a problem.

Patent Document 2 discloses a technique of a winding machine in which a cam plate and a motor for generating a phase difference are built in a head portion of one disk. According to this technique, it is possible to rotate a phase difference generating motor built in the head unit to generate a phase difference between two disks, and to advance and retract the needle with a relatively simple configuration. It is supposed to be possible.

However, since the head for moving the needle is provided with a motor for generating a phase difference, there is a problem that it is difficult to apply to a stator core for a small motor with a large head and a small winding space. . Further, since the motor itself reciprocates, the durability of the device is likely to be lowered due to a failure of precision parts such as an encoder or a motor line, and it is difficult to rotate the head portion at high speed. Furthermore, since the weight of the head portion on which the motor is mounted becomes heavy, there is a problem that vibration is easily transmitted to the needle. Even with this technique, there is a problem that it is difficult to increase the alignment accuracy of the wound coil wires.

Patent Document 3 discloses a technique in which an outer cylinder and an inner cylinder are reciprocally rotated by separate motors to cause the needle to revolve and move forward and backward. According to this technique, when one of the motors is stopped, the rotation of the two disks is shifted, a phase difference is generated, and the needle is advanced and retracted. According to this technique, in order to wind the magnetic pole teeth quickly, it is necessary to reciprocate and rotate the motor for the circular motion.

However, when a motor rotating at a high speed is stopped in a short time, an overshoot phenomenon occurs in which the stop position exceeds the target value along with slight vibration. When the motor for circular motion is rotated at a high speed, an overshoot occurs when reversing the rotation, so that the position of the tip of the needle is likely to deviate from the set trajectory, and the winding tends to be uneven in the radial direction. There was a problem. Even with this technique, there is a problem that it is difficult to increase the alignment accuracy of the wound coil wire when it is wound at a high speed.

Patent Document 1: Japanese Patent Laid-Open No. 2000-245121 Patent Document 2: Japanese Patent Laid-Open No. 2000-175415 Patent Document 3: Japanese Patent Laid-Open No. 2002-208530

The problem to be solved by the present invention is to provide a needle advancing / retreating means capable of maintaining a high alignment accuracy of the coiled coil wire even when the needle is rotated around the magnetic teeth at high speed, and the needle advancing / retreating means. A direct winding type winding machine is provided.

The needle advancing / retreating means according to the first aspect of the present invention includes a plurality of needles for sending coil wires, an inner cylinder for guiding the coil wires, an outer cylinder, and an intermediate cylinder connected to the inner cylinder and the outer cylinder. And two stacked disks, one of the disks has a helical cam groove, and the other disk has a linear needle sliding groove extending in the radial direction, The disk is rotatably supported by either the intermediate cylinder or the inner cylinder, and the inner cylinder is connected to the intermediate cylinder by a first connecting means that allows only a swinging movement in the circumferential direction, The outer cylinder is connected to the intermediate cylinder by a second connecting means that allows only linear movement only in the axial direction, and the intermediate cylinder rotated integrally with the outer cylinder and the inner cylinder are rotated. Due to the generated phase difference, the cam follower provided on the needle moves along the cam groove. The needle advancing / retreating means in which the tips of the plurality of needles are advanced / retracted in the radial direction, the needle advancing / retreating means including rotational motion generating means and swing motion generating means, and the rotational motion generating means A servo motor is fixed to the base in a state of being separated from the outer cylinder, the swinging motion generating means includes a motion transmitting means and a motion direction converting means, and the motion transmitting means forms a shaft. The rotational movement generated by the servo motor is transmitted to the side surface of the outer cylinder in a direction intersecting the axial direction of the outer cylinder, and the movement direction converting means transmits the rotational movement transmitted to the side surface, The phase difference is generated by converting into a swing motion that swings the outer cylinder.

Even if vibration is generated by the forward / reverse rotational motion of the servo motor that forms the rotational motion generating means, the servo motor is fixed to the base in a state of being separated from the outer cylinder. Alternatively, vibration is not easily transmitted to the disk on which the needle is provided. In addition, since it is separated from the servo motor that rotates at high speed to constitute the circular motion, the servo motor that forms the needle advancement / retraction means even if the over-shoot occurs in the servo motor for circular motion and fine vibration occurs. Not affected.

Rotational motion generated by the servo motor that forms the needle advance / retreat means is transmitted to the side surface of the outer cylinder by the motion transmission means that forms the swing motion generation means. Further, the rotational motion transmitted in the direction intersecting the axial direction of the outer cylinder by the motion direction converting means is converted into a rotational motion that swings the outer cylinder in the axial direction. For example, the motion direction of the rotational motion may be changed by a worm gear, a bevel gear, a crown gear or the like in which the input shaft and the output shaft intersect. The motion transmission means consists of a shaft, and the rotational motion is transmitted after being converted in the intersecting direction. Therefore, the slack does not occur unlike the timing belt, and the outer cylinder is shaken with high motion responsiveness and accuracy. Can be moved dynamically.

The intermediate cylinder is connected to the inner cylinder by the first connecting means that allows only the swinging movement in the circumferential direction, and is connected to the outer cylinder by the second connecting means that allows only the linear movement only in the axial direction. Yes. The rotational movement transmitted to the outer cylinder causes the intermediate cylinder to rotate. However, the inner cylinder is allowed to swing with the intermediate cylinder, so the rotational movement transmitted to the outer cylinder is not transmitted to the inner cylinder. A phase difference is generated between the intermediate cylinder and the inner cylinder that are rotated integrally with the outer cylinder.

According to the first aspect of the present invention, the rotational motion of the servo motor forming the rotational motion generating means is transmitted as a swinging motion for swinging the outer cylinder with high operation responsiveness and accuracy, and is transmitted to the outer cylinder and the inner cylinder. A phase difference is generated. As a result, in order to obtain high production efficiency, it is easy to move the needle back and forth at a speed corresponding to it even if the needle tip rotates faster, and the alignment accuracy of the coiled coil wire is kept high. It is possible.

A second invention of the present invention is the needle advancement / retraction means of the first invention, wherein the shaft body can be expanded and contracted, and the servo motor and the motion direction conversion means are connected via a universal joint. It is characterized by letting it.

The motion transmission means is a shaft body that can be expanded and contracted through a universal joint, and the servo motor and the motion direction conversion means are connected to each other. Since the shaft body can be expanded and contracted in the axial direction and is connected to the servo motor and the motion direction conversion means by a universal joint, the servo motor generates rotational motion while it is fixed to the base. Even if the distance between the portion and the side surface of the outer cylinder that transmits the rotational motion varies, the rotational motion is accurately transmitted.

In addition, when the inner cylinder, the intermediate cylinder, and the outer cylinder are axially moved in synchronization, the shaft body can be expanded and contracted, so that a force that impedes rotational motion is applied from the shaft body to the outer cylinder. Instead, only the rotational motion generated by the servo motor can be accurately transmitted to the outer cylinder. The rotational motion of the servo motor is accurately transmitted to the outer cylinder with high operation responsiveness, so that the alignment accuracy of the wound coil wire can be increased.

A third invention of the present invention is the needle advance / retreat means of the first or second invention, wherein the movement direction changing means has a worm gear comprising a worm and a worm wheel, and the worm is formed of the shaft body. The worm wheel is fixed to the outer cylinder side end, the worm wheel is fixed to the periphery of the outer cylinder, and the worm rotates the worm wheel to swing the outer cylinder.

The worm gear is suitable because if the worm is not rotated, the meshing position between the worm and the worm wheel is not shifted, and a phase difference can be generated only by the rotation of the worm. Specifically, while the outer cylinder and the inner cylinder are synchronized and reciprocated, the occlusal position between the worm and the worm wheel does not shift, and the synchronization state does not change. The rotational motion of the servo motor is accurately transmitted to the outer cylinder with high operation responsiveness, so that the alignment accuracy of the wound coil wire can be increased.

According to a fourth aspect of the present invention, there is provided a series winding machine for winding a coil wire around a magnetic teeth, comprising the needle advancement / retraction means of the first to third aspects. As a result, it is possible to provide a series winding machine capable of manufacturing an armature having high operation responsiveness and high radial alignment accuracy.

-According to the first invention of the present invention, in order to obtain high production efficiency, even if the revolving motion of the tip of the needle is made fast, it is easy to make the needle advance and retreat at a speed corresponding thereto, and the wire is wound. Further, there is an advantageous effect that the alignment accuracy of the coil wire can be kept high.
According to the second to third aspects of the present invention, the rotational motion of the servo motor is accurately transmitted to the outer cylinder with high operation responsiveness, thereby increasing the alignment accuracy of the wound coil wires. It is possible.
According to the fourth aspect of the present invention, it is possible to provide a series winding machine capable of manufacturing an armature that has high operation response and high radial alignment accuracy.

Explanatory drawing explaining a winding machine (Example 1). Explanatory drawing explaining winding state and advance / retreat of needle (Example 1) Explanatory drawing explaining the structure of a needle advance / retreat means (Example 1). Explanatory drawing explaining the structure of a movement transmission means and a movement direction conversion means (Example 1). Explanatory drawing explaining the effect | action of a needle advance / retreat means by a cross section (Example 1). Explanatory drawing explaining a winding machine by a cross section (Example 1). Explanatory drawing explaining the rocking | fluctuation motion generating means (Example 1). Explanatory drawing explaining the rocking | fluctuation motion generating means (Example 1).

The needle advancing / retreating means constituting the series winding machine was arranged so that the servomotor for the needle advancing / retreating movement was not affected by the mechanism for the circular movement. By transmitting the servo motor's rotational movement through a shaft that does not loosen, converting it to a movement that swings the outer cylinder, and by placing an intermediate cylinder between the outer cylinder and the inner cylinder, the movement transmitted only to the outer cylinder The phase difference is generated between the inner cylinder and the outer cylinder.

In Example 1, a needle advancing / retreating means 1 in which the movement direction changing means is a worm gear will be described with reference to FIGS. In FIG. 1, the main components of the present invention are indicated by solid lines, and the other components are indicated by broken lines. Moreover, in FIG. 1, the imaginary line of the inner cylinder 10 is shown with the dashed-dotted line. In FIG. 1, the direction in which the coil wires are sent out radially is indicated by thick arrows.

FIG. 1 is a perspective view for explaining a series winding machine 100. FIG. 2 is an explanatory diagram for explaining the winding state and the advancement and retraction of the needle. 2A shows a part of the stator core and the needle head portion 11, and FIG. 2B shows the top plate portion of the intermediate cylinder that forms the needle 12 and the cam plate 21. This shows a state in which the leading end 17 has advanced to the outer end of the slot. FIG. 3 is an explanatory view for explaining the configuration of the needle advance / retreat means 1. FIG. 4 is an explanatory diagram for explaining the configuration of the motion transmission means and the motion direction conversion means. FIG. 5 shows an explanatory view for explaining the operation of the needle advancing / retreating means by a cross section. FIG. 6 is an explanatory diagram for explaining the mechanism of the series winding machine 100 in section. 7 and 8 are explanatory diagrams for explaining the swinging motion generating means.

First, the configuration of the series winding machine 100 and the needle advance / retreat means 1 will be described with reference to FIGS. The series winding machine 100 includes a needle advancing / retreating means 1 that moves the tip of the needle 12 forward and backward in the radial direction of the stator core, an inner cylinder 10 to which the needle is attached, and an outer cylinder 30 disposed around the inner cylinder. And an intermediate cylinder 20 (see FIG. 3) disposed between the inner cylinder and the outer cylinder. In addition to this, linear motion means 80 (see FIG. 6, illustrated by broken lines) for reciprocating linear movement of the needle tip in the axial direction of the stator core, and reciprocating rocking motion for reciprocating rocking motion of the needle tip in the circumferential direction of the stator core. Means 70 (see FIG. 1, shown in broken lines).

The tip 17 of the needle is circulated around the magnetic pole teeth 111 by combining two motions of reciprocating linear motion in the axial direction of the stator core 110 and reciprocating rocking motion in the circumferential direction of the stator core. The coil wire 130 is wound further in a state of being aligned in the radial direction by moving forward and backward in the radial direction of the stator core by the size of one coil wire for each round motion (see FIG. 2 (A)). ).

Here, the configuration of the inner cylinder 10, the intermediate cylinder 20, and the outer cylinder 30 that transmit each motion to the tip 17 of the needle will be described with reference to FIG. In FIG. 3A, the stator core 110 is indicated by a broken line. FIG. 3A is a cross-sectional view showing a state in which the inner cylinder 10 and the intermediate cylinder 20 are moved upward so that the tip 17 of the needle protrudes upward from the end face of the stator core, and FIG. The figure shows a cross-sectional view at the position AA in FIG.

The inner cylinder 10 is a hollow space whose center portion guides the coil wire 130, and the tip portion forms a disk that forms the needle head portion 11. The upper disk 13 and the lower disk 14 are divided into two disks, and needle sliding grooves 15 in which the needle 12 slides in the radial direction are radially engraved in the upper disk 13. The lower disk 14 is a disk having a smaller diameter than the upper disk 13.

The intermediate cylinder 20 includes a disk that forms a cam plate 21 and a body portion 23 that is inserted into a gap formed by the inner cylinder 10 and the outer cylinder 30 (FIGS. 3A and 3B). reference). The cam plate 21 has the same outer diameter as the upper disk 13 and has three spiral cam grooves 22 (see FIG. 2B). The body portion 23 is an enlarged diameter portion 24 whose upper diameter is enlarged, and a peripheral edge portion 25 thereof is erected, and the lower disk 14 is stored in the enlarged diameter portion 24. Further, on the lower outer surface of the intermediate cylinder 20, a streak-like convex portion 26 forming a second connecting means is formed in the axial direction along the axial direction (see FIG. 3B).

The cam plate 21 is put in a state in which the lower disk 14 of the inner cylinder is stored in the enlarged diameter portion 24, and the lower disk 14 is surrounded by the intermediate cylinder 20. The upper cylinder 13 of the inner cylinder is put on the end surface of the inner cylinder 10 so that the inner cylinder is integrated. In addition, the intermediate part 20 and the inner cylinder 10 should just be made into the said shape by couple | bonding several components with a volt | bolt etc. to the said shape.

As described above, the first connecting means is configured such that the lower cylinder 14 of the inner cylinder provided in the needle head 11 is surrounded by the cam plate 21, the enlarged diameter part 24, and the peripheral part 25 of the intermediate cylinder. Since the lower disk 14 is surrounded by the cam plate 21, the enlarged diameter portion 24, and the peripheral edge portion 25 of the intermediate cylinder, the inner cylinder 10 and the intermediate cylinder 20 are linearly moved integrally in the axial direction and in the circumferential direction. Each can be freely rotated.

The needle 12 for feeding the coil wire is slidably mounted in a linear needle sliding groove 15 formed in the upper disk 13 of the inner cylinder (see FIG. 2B), and is placed under the needle 12. The cam follower 16 composed of the formed protruding portion is slid along the cam groove 22 formed in the cam plate 21 of the intermediate cylinder. When a swinging motion is transmitted to the outer cylinder 30 and a phase difference is generated between the inner cylinder 10 and the outer cylinder 30, the cam follower 16 is slid along the cam groove 22, and the needles 12 are simultaneously moved in the radial direction. It is moved forward and backward (see FIG. 2B).

The outer cylinder 30 is a cylinder whose center is hollow, and the intermediate cylinder 20 and the inner cylinder 10 are inserted into the cylinder. On the inner surface of the outer cylinder 30, a streak-like recess 31 that forms the second connecting means is formed in the axial direction (see FIG. 3B). The outer cylinder 30 and the intermediate cylinder 20 are connected to each other with the line-shaped convex portion 26 formed on the lower outer surface of the intermediate cylinder and the line-shaped concave portion 31 as the second connecting means. Then, when the needle head portion 11 is reciprocated linearly in the axial direction of the stator core, the inner cylinder 10 and the intermediate cylinder 20 are not axially moved in the circumferential direction, and the inner cylinder and the intermediate cylinder are axially moved. Are linearly moved together. Note that the height of the top 32 of the outer cylinder is constant.

On the other hand, since the convex portion 26 and the concave portion 31 are fitted into the outer cylinder 30 and the intermediate cylinder 20 and the circumferential rotational movement is integrated, the needle head portion is reciprocally oscillated in the circumferential direction of the stator core. At this time, the outer cylinder 30 and the intermediate cylinder 20 are rotated in conjunction with each other. The rotational motion generated by the servo motor 60 that forms the needle advance / retreat means 1 is transmitted by a shaft body 40 (to be described later) and a worm gear 50 stored in the housing portion 61, and causes the outer cylinder 30 to swing. The swing motion transmitted to the outer cylinder 30 is transmitted to the intermediate cylinder 20 by the second connecting means, and a phase difference is generated with respect to the inner cylinder 10.

Next, the configuration of the needle advance / retreat means 1 will be described in detail with reference to FIGS. 1 and 4 to 8. The needle advance / retreat means includes a servo motor 60 that forms a rotational motion generation means, a motion transmission means that forms a swing motion generation means, and a motion direction conversion means. The motion transmitting means is composed of a telescopic shaft body 40 having universal joints mounted at both ends. The motion direction conversion means is composed of a worm gear 50 and converts the rotational motion transmitted about the horizontal axis to the side surface of the outer cylinder 30 into the rotational motion about the vertical axis. Note that the worm gear 50 is stored in a casing portion 61 provided continuously from the outer peripheral edge of the inner cylinder 10 (see FIG. 4A).

First, with reference to FIG. 1, a servo motor 60 that constitutes a rotational motion generating means will be described. The servo motor 60 is fixed to the base 120 spaced apart from the outer cylinder 30, and the tip of the needle is made less susceptible to the vibration generated by driving the servo motor (see FIG. 1). In this embodiment, in order to adjust the position of the servo motor 60 in the height direction, the servo motor 60 is fixed to the base 120 via a height adjustment base 121. The servo motor 60 is also independent of a servo motor 71 that reciprocates the needle and a servo motor 81 that linearly reciprocates the needle (see FIGS. 1 and 6). Therefore, it is not affected by the servo motors 71 and 81 for causing the needle 12 to revolve around the magnetic pole teeth.

Next, the shaft body 40 that transmits the rotational motion of the servo motor 60 to the worm gear will be described with reference to FIGS. 4A shows a state in which a part of the shaft body 40 is cut away. 4A is an explanatory diagram for explaining the configuration of the shaft body 40 and the worm gear 50 by a cross-section at the position AA in FIG. 5, and FIG. 4B is a diagram of FIG. 4A. A cross-sectional view of the shaft body 40 at the AA position is shown. In FIG. 5, arrow B indicates the rotation direction of the worm, arrow C indicates the rotation direction of the inner cylinder, arrow D indicates the direction in which the needle retracts, arrow E indicates the rotation direction of the timing belt, and arrow F indicates the cam. The rotation direction of the output shaft of the mechanism is shown.

In the shaft body 40, a main shaft portion 41 is formed by combining a housing 42 and a cylindrical body 43, and an uneven groove 44 extending along the axial direction of the main shaft portion 41 is engaged with the opposing surface of the housing 42 and the cylindrical body 43. It is provided as a groove. Therefore, the main shaft portion 41 is allowed to expand and contract in the axial direction, and the housing 42 and the cylindrical body 43 are rotated together by the occlusion of the concave and convex grooves 44, so that only the rotational motion in the circumferential direction is transmitted (FIG. 4 ( B) See figure).

Also, the shaft body 40 has universal joints 45 and 46 at both ends, and the rotational motion from the shaft body 40 is transmitted even if the connection angle with the connection object changes. The main shaft portion 41 of the shaft body extends in a direction crossing the axial direction of the outer cylinder 30, the universal joint 45 at the base end portion is connected to the rotating shaft of the servo motor 60, and the universal joint 46 at the distal end portion is attached to the worm gear 50. (See FIGS. 1 and 4). Therefore, the rotational motion of the servo motor 60 can be transmitted to the side surface of the outer cylinder with the direction intersecting the axial direction of the outer cylinder 30 as the central axis (see FIG. 4A).

In a state where the shaft body 40 is not rotated, when the tip 17 of the needle is reciprocally oscillated in the circumferential direction, the inner cylinder 10 and the outer cylinder 30 are reciprocally oscillated. Then, the distance / relative angle between the servo motor 60 fixed to the base and the worm 51 rotated around the central axis of the inner cylinder also changes according to the state of the reciprocating swing motion (see FIG. 7). . At this time, in the shaft body 40, the main shaft portion 41 is expanded and contracted following the change in the distance and relative angle, and the connection angle between the universal joints 45 and 46 at both ends is changed (see FIG. 7). Thereby, the rotational motion of the servomotor 60 can be transmitted to the worm gear 50 by the shaft body in which no slack occurs, and high operation responsiveness can be obtained.

Next, the configuration of the worm gear 50 will be described with reference to FIG. The worm gear 50 constituting the movement direction conversion means includes a worm 51 connected to the tip of the shaft body 40 and a worm wheel 52 engaged with the worm (see FIG. 4A). The worm 51 is stored in a casing 61 that is provided continuously from a bearing 63 that is mounted on the inner cylinder 10, and is reciprocally swung around the central axis of the inner cylinder together with the casing.

The worm wheel 52 is housed in the casing 61 and is integrally fixed around the outer cylinder 30, and the servo motor transmitted to the side surface of the outer cylinder by the shaft body 40 by rotating the worm 51. The rotational motion of 60 is converted into a swing motion that swings the outer cylinder 30 (see FIG. 8). Due to the swing motion, a phase difference is generated between the outer cylinder 30 and the inner cylinder 10.

Here, with reference to FIG. 1, FIG. 5, and FIG. 6, the structure of an example of the orbiting motion means for circling the needle 12 around the magnetic teeth will be briefly described. The orbiting motion means includes a reciprocating rocking motion means 70 and a linear motion means 80. The reciprocating rocking motion means 70 and the linear motion means 80 are indicated by broken lines in each figure. The servo motor 71 for reciprocating rocking motion and the servo motor 81 for linear motion are independently provided on the base 120 (see FIGS. 1 and 6). The reciprocating oscillating motion generated by the reciprocating oscillating servo motor 71 and the linear motion generated by the linear oscillating servo motor 81 are combined into a circular motion.

Rotational motion generated by the linear motion servomotor 81 causes the inner cylinder 10 to linearly move up and down by the crank mechanism 84. The inner cylinder 10 to which the linear motion is transmitted is linearly moved in the vertical direction integrally with the intermediate cylinder 20. The reciprocating oscillating motion generated by the servo motor 71 for reciprocating oscillating motion causes the housing 61 to reciprocate around the axis by the cam mechanism 74 and the link mechanism 76. Then, the reciprocating rocking motion is transmitted from the housing part 61 to the outer cylinder 30 and the inner cylinder 10.

Specifically, the reciprocating rocking motion transmitted to the housing 61 is transmitted to the inner cylinder by a bearing 63 that linearly moves the housing 61 and the inner cylinder 10 only in the axial direction. ing. A plurality of linear grooves 64 extending in the axial direction are provided at positions where the bearing portion 63 and the inner cylinder 10 face each other, and a plurality of bearings 65 are fitted along the linear grooves (see FIG. 5). . Therefore, when the inner cylinder is reciprocally swung, the housing portion 61 and the inner cylinder 10 are engaged with the bearing 65 and reciprocally swung. When the inner cylinder is linearly moved, the bearing 65 is slid, and only the inner cylinder is reciprocated linearly with respect to the casing.

On the other hand, a reciprocating rocking motion is transmitted to the outer cylinder 30 through the worm gear 50 from the housing portion 61. Therefore, the outer cylinder 30 and the inner cylinder 10 receive the reciprocating rocking motion from the same casing 61, but the reciprocating rocking motion of the outer cylinder does not affect the reciprocating rocking motion of the inner cylinder. Therefore, if the shaft body 40 rotates the worm gear 50, only the outer cylinder 30 can be swung, and a phase difference can be generated between the outer cylinder 30 and the inner cylinder 10 (FIG. 5, see FIG. In the state where the shaft body is not rotated, the outer cylinder and the inner cylinder are reciprocally swung in synchronization (see FIG. 7).

Next, with reference to FIG. 5, an example of reciprocating rocking movement means for moving the needle 12 in the circumferential direction of the stator core will be briefly described. The reciprocating oscillating motion means 70 is a servo motor 71 for reciprocating oscillating motion, a pulley 72 and a timing belt 73 for transmitting the rotational motion of the servo motor to the cam mechanism, and converts the rotational motion of the servo motor into a reciprocating oscillating motion. And a link mechanism 76 for transmitting a reciprocating swinging motion output from the cam mechanism. The cam mechanism 74 is a reciprocating oscillating motion that repeats a forward oscillating motion, a stopped state, a backward oscillating motion, and a stopped state in order in a rotational motion input from the servo motor 71 for reciprocating oscillating motion. It has been converted to.

The link mechanism 76 includes a swing main driving portion 77 attached to the output shaft 75 of the cam mechanism, a pair of connecting rods 79 extending from the swing main driving portion, and a swing driven portion 78 connected to the connecting rod. (See FIG. 5). Each of the link mechanisms 76 is composed of a rigid housing or the like, and is less likely to loosen or play, and has high operation response (see FIG. 5). Further, the reciprocating swing motion is transmitted to the housing portion 61 by the connecting shaft 62 suspended from the swing follower portion 78.

Next, an example of the linear motion means 80 for moving the needle 12 in the axial direction of the stator core will be briefly described with reference to FIG. The linear motion means 80 includes a servo motor 81 for linear motion, a disk 85 rotated by the servo motor, a flange 87 disposed at a position eccentric from the central axis 86 of the disk, and an axial direction of the stator core. And a plate body 88 that reciprocates linearly.

The linear motion means converts the rotational motion in one direction of the servo motor 81 for linear motion into a reciprocating linear motion that repeats forward linear motion and backward linear motion in order. A pulley 82 is attached to the output shaft of the servo motor 81, and the pulley attached to the central shaft 86 of the disk is rotated in one direction by a timing belt 83. When the central shaft 86 is rotated, the collar portion 87 provided on the disk 85 is swung around the central shaft 86 so as to draw a circular orbit.

A long hole 89 extending in the horizontal direction is drilled in the central portion of the plate body 88, and the distal end portion of the flange 87 is inserted through the long hole 89 (see FIG. 6). The vertical component of the turning motion is transmitted to the plate body 88 when the flange 87 presses the long hole 89 in the vertical direction. On the other hand, the horizontal component of the turning motion is not transmitted to the plate body 88 because the flange 87 is moved in the horizontal direction along the long hole 89, and the reciprocating straight line is obtained from the rotational motion in one direction of the servo motor 81. Only motion is extracted.

Further, the plate body 88 is provided with a holding portion 90 that holds the inner cylinder 10, and transmits a reciprocating linear motion to the inner cylinder 10. A circumferential groove 91 having a circumferential shape is engraved on the opposing surfaces of the holding portion 90 and the inner cylinder 10, and a plurality of bearings 92 are fitted in the circumferential groove 91. (See FIG. 6). Therefore, when the inner cylinder 10 is reciprocally swung, the bearing 92 is allowed to slide and the inner cylinder is allowed to rotate. When the plate 88 is reciprocated linearly in the axial direction, the bearing 92 is engaged, and the inner cylinder 10 is reciprocated linearly together with the plate 88.

Here, with reference to FIG. 7, the operation state of the needle advance / retreat means 1 and the reciprocating rocking motion means 70 in a state where the needle 12 is not advanced / retracted will be described in detail. FIG. 7 (A) shows a state in which reciprocal swinging movement is not performed, and FIG. 7 (B) shows that the inner cylinder 10 and the outer cylinder 30 are rotated counterclockwise with respect to the central axis. 7C shows a state in which the casing 61 is inclined counterclockwise. FIG. 7C shows that the inner cylinder 10 and the outer cylinder 30 are rotated clockwise with respect to the central axis. A state of tilting clockwise is shown.

When the reciprocating rocking motion is transmitted to the housing 61, the bearing 63 is rotated together with the housing 61, whereby the reciprocating rocking motion is transmitted to the inner cylinder 10 (FIGS. 5 and 7). reference). As long as the shaft body 40 is not rotated, the occlusal positions of the worm 51 and the worm wheel 52 are not changed even when the casing unit 61 is rotated.

Then, the outer cylinder 30 and the intermediate cylinder 20 are rotated together by the second connecting means, and the intermediate cylinder 20 is reciprocally oscillated while being synchronized with the casing portion 61 (see FIG. 3). Then, since the outer cylinder 30, the intermediate cylinder 20, and the inner cylinder 10 are reciprocally swung, the phase difference is not generated between the intermediate cylinder 20 and the inner cylinder 10, and the needle 12 moves forward and backward. Not (see FIG. 3).

Further, in the figure, in the state where the casing 61 is tilted counterclockwise (see the arrow B in FIG. 7B), the main shaft portion 41 of the shaft body is tilted clockwise with the base end as a reference point. Thus, the connection angle of the universal joints at both ends is changed to correspond to the change in the connection angle between the servo motor 60 and the worm 51. Further, the housing 42 is accommodated in the cylindrical portion, so that the distance between the servo motor 60 and the worm 51 is changed (see FIG. 7B, arrow A). In the figure, in a state in which the casing portion 61 is tilted clockwise (see arrow D in FIG. 7B), the main shaft portion 41 is tilted counterclockwise with the base end portion as a reference point. The housing 42 is pulled out from the cylindrical portion 43, and corresponds to changes in the connection angle and distance (see FIG. 7C, arrow D).

Next, the operation of the needle advance / retreat means when the worm gear 50 is rotated and the tip of the needle is advanced / retracted in the radial direction will be described with reference to FIG. FIG. 8A shows a state in which the tip 17 of the needle is located at the outer end of the slot 112 and the winding process is started. FIG. 8B shows a state in which the tip 17 of the needle is retracted to the vicinity of the inner end of the slot. FIG. 8 (C) shows that the tip 17 of the needle is reversed so as to advance from the inner end, and the upper coil wire 131 is superimposed on the coil wire 130 wound on the lower layer. Indicates the state to be started.

When a phase difference is generated between the outer cylinder 30 and the inner cylinder 10, the phase difference is transmitted to the intermediate cylinder 20 via the second connecting means (see FIG. 5). Then, a phase difference is also generated between the intermediate cylinder 20 and the inner cylinder 10, and the cam follower 16 is slid along the cam groove 22 according to the phase difference, so that the tip 17 of the needle is in the radial direction. It is moved forward and backward (see FIG. 8).

As described above, the reciprocating rocking motion is transmitted to the inner cylinder 10 by the bearing portion 63 directly connected to the housing portion 61. On the other hand, the outer cylinder 30 is transmitted through a worm gear 50. Therefore, when the shaft body 40 is rotated, only the outer cylinder 30 can be swung relative to the inner cylinder by the amount of rotation of the worm 51 without affecting the reciprocating rotation of the inner cylinder 10. (See FIG. 8).

Rotation amount of the worm gear 50 only needs to generate a phase difference necessary for advancing and retreating movement of one coil wire while the needle is rotated around the magnetic pole teeth. Therefore, the speed of the rotational motion required for the needle advance / retreat servomotor may be lower than that of the case where the needle rotates, and the advance / retreat movement can easily follow the rotation. Therefore, even when the tip of the needle is rotated at high speed, generation of vibration due to rotation of the servo motor can be suppressed, and the alignment accuracy in the radial direction of the winding can be increased.

The servo motor 60 is rotated in one direction while the tip 17 of the needle moves from the outer end to the inner end of the stator core slot 112 (FIGS. 8A and 8B). ) See arrow A). Therefore, the shaft body 40, the worm 51, and the worm wheel 52 are rotated in one direction regardless of the rotation direction of the housing portion 61 (see the arrow E in FIG. 8A and the arrow F in FIG. 8B). (See FIG. 8A, FIG. 8B, arrow B to arrow D).

When the sliding direction of the cam follower 16 is reversed, the rotation direction of the servo motor 60 is reversed (see arrow G in FIG. 8C). Accordingly, the rotation direction of the shaft body 40, the worm 51, and the worm wheel 52 is switched to the opposite direction (see FIG. 8C, arrow H to arrow J). Then, the moving direction of the needle tip 17 is switched to the advance direction, and winding of the upper coil wire 131 is started so as to overlap the already wound lower coil wire 130 (FIG. 8C (See the figure).

(Other)
In the first embodiment, the oscillation motor and the linear motion servo motor that are combined as the circular motion have been described as being independent. However, the present invention is not limited to this, and other forms of the circular motion means Needless to say, the needle advancing / retreating means of the present invention may be applied.
In Example 1, the intermediate cylinder is provided with the cam groove, and the inner cylinder is provided with the needle sliding groove. However, the needle is inverted upside down to provide the needle sliding groove on the intermediate cylinder, and the inner cylinder is provided with the cam groove. Of course, it is also good.
・ When the movement direction conversion means uses bevel gears other than the worm gear, if the servo motor torque is made larger than the force received by the movement direction conversion means, the meshing position of the gears will not shift. The same effect as the worm gear can be obtained.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The technical scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

1 ... Needle advance / retreat means, 100 ... Winding machine,
DESCRIPTION OF SYMBOLS 10 ... Inner cylinder, 11 ... Needle head part, 12 ... Needle, 13 ... Upper disk, 14 ... Lower disk, 15 ... Needle sliding groove, 16 ... Cam follower, 17 ... Tip of needle,
20 ... Intermediate cylinder, 21 ... Cam plate, 22 ... Cam groove, 23 ... Body part, 24 ... Expanded part, 25 ... Peripheral part, 26 ... Convex part,
30 ... outer cylinder, 31 ... concave, 32 ... top,
40 ... shaft body, 41 ... main shaft portion, 42 ... housing, 43 ... tube portion, 44 ... concave / convex groove, 45, 46 ... universal joint,
50 ... Worm gear, 51 ... Worm, 52 ... Worm wheel,
60 ... Servo motor, 61 ... Housing, 62 ... Connecting shaft, 63 ... Bearing, 64 ... Linear groove, 65 ... Bearing,
DESCRIPTION OF SYMBOLS 70 ... Reciprocating rocking motion means, 71 ... Servo motor, 72 ... Pulley, 73 ... Timing belt, 74 ... Cam mechanism, 75 ... Output shaft, 76 ... Link mechanism, 77 ... Swing main drive part, 78 ... Swing follower , 79 ... connecting rods,
DESCRIPTION OF SYMBOLS 80 ... Linear motion means, 81 ... Servo motor, 82 ... Pulley, 83 ... Timing belt, 84 ... Crank mechanism, 85 ... Disk, 86 ... Center axis, 87 ... Gutter, 88 ... Plate body, 89 ... Long hole, 90 ... holding part, 91 ... circumferential groove, 92 ... bearing,
110 ... Stator core, 111 ... Magnetic pole teeth, 112 ... Slot, 120 ... Base, 121 ... Base,
130, 131 ... Coil wire

Claims (4)

A plurality of needles for sending coil wires, an inner cylinder for guiding the coil wires, an outer cylinder, an intermediate cylinder connected to the inner cylinder and the outer cylinder, and two stacked disks, The disk has a spiral cam groove, and the other disk has a linear needle sliding groove extending in the radial direction. Each of the disks is either the intermediate cylinder or the inner cylinder. The inner cylinder is connected to the intermediate cylinder by a first connecting means that allows only a swinging movement in the circumferential direction, and the outer cylinder is a straight line only in the axial direction. The needle is provided by the phase difference generated by the rotation of the intermediate cylinder and the inner cylinder, which are connected by the second connecting means that allows only the movement and is rotated integrally with the outer cylinder. A cam follower is slid along the cam groove, and the tips of the plurality of needles have diameters. In the needle moving means are reciprocating movement direction,
The needle advancing / retreating means includes a rotational motion generating means and a swinging motion generating means,
The servo motor that forms the rotational motion generating means is fixed to the base in a state of being separated from the outer cylinder,
The swing motion generating means includes a motion transmitting means and a motion direction converting means,
The movement transmitting means forms a shaft, and the rotational movement generated by the servo motor is transmitted to the side surface of the outer cylinder in a direction intersecting the axial direction of the outer cylinder,
The motion direction conversion means converts the rotational motion transmitted to the side surface into a swing motion that swings the outer cylinder to generate the phase difference;
Needle advance / retreat means. The shaft body can be expanded and contracted, and the servo motor and the motion direction conversion means are connected via a universal joint.
The needle advancing / retreating means according to claim 1. The movement direction changing means has a worm gear composed of a worm and a worm wheel,
The worm is fixed to an end portion of the shaft body on the outer cylinder side,
The worm wheel is fixed around the outer cylinder,
The worm rotates the worm wheel to swing the outer cylinder;
The needle advancement / retraction means according to claim 1 or 2, wherein the needle advancement / retraction means is provided. In a series winding machine that winds a coil wire around magnetic teeth,
The needle advancing / retreating means according to any one of claims 1 to 3 is provided.
A series winding machine characterized by that.

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