JPH0628943Y2 - Needle swing mechanism in winding machine - Google Patents

Description

Detailed Description of the Invention a. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle oscillating mechanism in a winding machine, and particularly when a wire is wound around a magnetic pole through a needle by a combination of vertical movement and horizontal rotation of a spindle, the needle in the longitudinal direction of the magnetic pole. The present invention relates to a new improvement for varying the feed amount of a wire and performing winding with an arbitrary density.

b. 2. Description of the Related Art Conventionally, various needle swing mechanisms in this type of winding machine that have been used have been proposed, and a typical configuration thereof is described in Japanese Utility Model Laid-Open No. 61-41378 and The structure disclosed in JP-A-60-237837 can be mentioned.

That is, first, in the case of the structure disclosed in Japanese Utility Model Laid-Open No. 61-41378, although not shown here, a driven gear and a heart cam are attached to a spindle capable of vertical movement and forward / reverse rotation through a one-way clutch. Further, the drive gear having a longitudinal shape having a one-way clutch is meshed with the driven gear, and by vertical movement and forward / reverse rotation of the spindle,
The needle provided on the upper part of the spindle is caused to make an elliptical motion to wind the wire around the magnetic pole of the stator to form a winding wire, and by each winding operation of this winding operation, the cam body is fixed by the free rotation of the spindle only. By moving the needle in the axial direction of the magnetic pole by a predetermined distance and repeating this operation, the winding is performed over the entire longitudinal direction of the magnetic pole.

Further, in the case of the configuration disclosed in Japanese Patent Laid-Open No. 60-237837, although not shown here, a drive gear and a heart cam with a spring member are vertically coupled by a frictionally coupling to a vertically movable and forward / reverse rotatable spindle. Further, a longitudinal drive gear having a one-way clutch is meshed with the drive gear, and the magnetic pole is wound by the same operation as described above.

c. Problems to be Solved by the Invention Since the needle swing mechanism in the conventional winding machine is configured as described above, the following problems exist.

That is, in any of the conventional configurations described above, one winding
When rotating and winding, the needle arm follows the cam surface of the cam body stopped when the spindle rotates in the reverse direction due to the action of the clutch, and the needle tilts. Therefore, the amount of movement of the needle per rotation is the free rotation of this spindle. Since the amount of needle feed per rotation of the winding in the axial direction of the magnetic pole is constant, it is impossible to perform winding in a more precise state.

The present invention has been made in order to solve the above problems, and in particular, enables to variably set the feed amount of the needle in one-turn winding operation of the winding with respect to the magnetic pole,
An object of the present invention is to provide a needle swinging mechanism in a winding machine that enables more precise parallel winding of magnetic poles.

d. Means for Solving the Problems A needle swing mechanism in a winding machine according to the present invention comprises a mounting portion provided on an upper part of a spindle capable of forward and reverse rotation within a range of vertical movement and rotation angle (θ), and the aforementioned mounting portion. A needle arm having a needle for repeatedly tiltingly supporting a wire for feeding a wire, a shaft supporting portion and a spring member provided in the mounting portion for holding the needle arm so as to be tiltable, and an outside of the spindle. A cam body that is coaxially provided via a first one-way clutch and is composed of a heart cam that contacts the protrusion of the needle arm, and a holder that is coaxially provided outside the cam body via a second one-way clutch. And an adjusting protrusion provided on the pair of projecting pieces of the holder, and a stopper having a long shape that is provided between the adjusting protrusions and abuts against the adjusting protrusions and is fixedly arranged. With the door, by varying the spacing between the adjusting protrusions and the stopper, a configuration in which the feeding amount of the needle be variably adjusted.

e. In the needle swing mechanism of the winding machine according to the present invention, the needle makes an elliptical motion by the combination of the vertical movement of the spindle and the forward / reverse rotation of a predetermined angle, so that the wire rotates around the magnetic pole to wind the wire. It can be carried out.

At the same time, the cam body rotates a predetermined angle at the time of the normal rotation of the spindle, and then stops at the time of reverse rotation, and when the cam body stops, the lower end of the needle arm follows a predetermined angle on the cam surface of the cam body. The needle of the needle arm is fed a predetermined distance in the longitudinal direction of the magnetic pole according to the cam surface thereof, and by repeating this operation, parallel winding can be successively performed on the magnetic pole.

In addition, in the above-described state, by adjusting the protrusion amount of the adjusting protrusion, the distance (α) between the adjusting protrusion and the stopper can be set to an arbitrary distance, and the action of the clutch when the spindle rotates in the reverse direction. When the needle arm follows the cam surface while the cam body is stopped by, the holder and cam body also rotate by this interval (α), and in this case, the needle arm and cam body rotate simultaneously. Therefore, the cam lead of the cam body is reduced accordingly, and the tilting amount of the needle arm is reduced, and the tilting corresponds to an angle smaller than the rotation angle (θ) of the spindle during forward and reverse rotations. Therefore, by changing the distance (α) by the adjusting projection, the feed amount of the needle per one turn of the winding can be changed, and more precise parallel winding of wires can be performed. That is, the protrusion of the needle arm slides on the cam body by the rotation angle of the spindle that rotates after the adjustment protrusion of the holder contacts the stopper, and the needle arm tilts.

f. Embodiment Hereinafter, a preferred embodiment of the needle swing mechanism in the winding machine according to the present invention will be described in detail with reference to the drawings.

1 to 4 show a needle swinging mechanism according to the present invention. FIG. 1 is a sectional view showing the entire structure, FIG. 2 is a sectional view taken along line XX of FIG. FIG. 3 is a configuration diagram showing a cam body, and FIG. 4 is a plan view of a main portion showing a winding state.

First, in FIG. 1, the fixed base indicated by reference numeral 1
A hollow spindle 2 is provided so as to be vertically movable and rotatable left and right via a driving means (not shown), and a needle arm 5 is attached to an attachment portion 3 provided on the upper portion of the spindle 2 via a shaft support portion 4. It is repeatedly tilted at the positions indicated by the solid and dotted lines.

At the upper end of the needle arm 5, there is a needle 6 located inside the stator S to be wound, and the wire for winding is guided through the through hole 2a in the spindle 2.
(W) is guided to the magnetic pole C side of the stator S through the needle 6, and a protrusion P is formed at the lower end of the needle arm 5.

A ring-shaped spring member 7 is provided in the engagement groove 3a formed on the outer periphery of the mounting portion 3, and the protrusion P at the lower end of the needle arm 5 is constantly provided on the spindle 2 side by the spring member 7. Is urged by.

A cam body 9 made of a heart cam having a cam surface 9a is coaxially provided on the outer periphery of the spindle 2 via a first one-way clutch 8 serving as a first rotation transmitting body.
A second direction opposite to the first one-way clutch 8 is provided on the outer periphery of the second direction.
A holder 11 is coaxially provided via a one-way clutch 10, and the protrusion P is in contact with the cam surface 9a of the cam body 9.

A holding portion 12 fixed to the spindle 2 is provided at the lower end of the cam body 9, and the cam body 9 and a second one-way clutch 10 forming a second rotation transmitting body are held on the spindle 2. A pair of projecting pieces 13 is formed at one end of the holder 11, and each projecting piece 13 is provided with an adjusting projection 14 so as to be able to move in and out.

At an intermediate position between the adjustment protrusions 14, a longitudinal stopper 15 fixedly disposed on the fixed base 1 is disposed, and by setting the protrusion amount with the adjustment protrusions 14 to be arbitrary, The interval (α) between each adjustment projection 14 and the stopper 15 can be set arbitrarily.

The needle swing mechanism according to the present invention is configured as described above, and its operation will be described below.

When the wire W is wound around the stator S, the rotation angle θ of the spindle 2 is determined by the number of slots of the stator S, 90 ° for a 4-slot stator, 45 ° for an 8-slot,
The 16 slots are set at 22.5 °.

First, when the spindle 2 is raised in the direction of arrow E by the driving means (not shown), it is raised together with the cam body 9 and the holder 11, and the needle 6 is also raised at the same time.

Next, when the spindle 2 normally rotates in the C direction, the cam body 9 normally rotates together with the spindle 2 and the needle 6 leaving the holder 11 by the action of the first one-way clutch 8 and the second one-way clutch 10. The needle 6 rotates by the angle (θ) shown in FIG. 4, and the needle arm 5 does not tilt at all. That is, here, the wire W is passed only on the upper surface of the magnetic pole C.

Next, when the spindle 2 descends in the F direction, the needle 6, the cam body 9 and the holder 9 all descend in the F direction, and when the spindle 2 reverses in the D direction, the cam body 9 tries to reverse together. , Second one-way clutch of holder 11
Since the non-rotation is caused by the action of 10 and the first one-way clutch 8, only the spindle 2, the needle 6 and the holder 11 are reversed, and the wire (W) is wound around the lower surface of the magnetic pole C.

Therefore, at this time, the needle 6 slightly moves (tilts) in the H direction (longitudinal direction) of the magnetic pole C by the cooperation of the protrusion P and the cam body 9 while reversing in the D direction (that is, the arrow D direction). Corresponds to the feed amount of the cam surface 9a of the cam body 9 according to the reverse rotation angle of.

The movement amount of the needle 6 in one rotation operation (upward, forward rotation, downward movement, reverse rotation) in the arrow H direction or the I direction is usually set to be equal to the diameter of the wire (W). The cam body 9 repeats ascending, forward rotation, descending and stopping (during reverse rotation) to complete winding in the direction of arrow H,
When the cam surface 9a of the cam body 9 makes a half rotation, the moving direction of the needle 6 during the reverse rotation of the spindle 2 is reversed in the direction of arrow I. The rotation angle θ of the spindle 2 is the same during forward rotation and reverse rotation.

Further, in the state where the cam body 9, which is stopped by the action of the second one-way clutch 10 when the spindle 2 is rotated in the reverse direction, is stopped as it is and the holder 11 is also stopped, the free rotation angle when the spindle 2 is rotated in the reverse direction is The rotation angle (θ) at the time of forward rotation is the same as the conventional state, and the needle arm 5 has the same tilting amount, but the gap (α between the adjustment protrusion 14 and the stopper 15 of the holder 11 is ) Is arbitrarily set, the holder 11 and the cam body 9 rotate together with the reverse rotation of the spindle 2 only within the set interval (α), and the adjustment projection 14 comes into contact with the stopper 15 and then the spindle 2 Since only the needle arm 5 continues to rotate, the follow-up amount of the needle arm 5 that follows the cam surface 9a becomes smaller than before, and as a result, the needle 6
The amount of tilting of the needle 6 is reduced, and the amount of movement H or I of the needle 6 corresponding to the feed amount θ ₁ is smaller than the feed amount of the cam body 9 rotated at the time of forward rotation. since the amount of feed theta _1, in which it is dense winding than conventional wire (W).

Therefore, by making the feed amount θ ₁ or the moving amount H or I smaller than before, the interval between reverse rotation and normal rotation becomes smaller (that is, the feed by the cam body 9 becomes smaller than before). The wire can be wound more finely. In addition, the rotation angle (2α) of the holder 11 can be arbitrarily selected at an angle smaller than the maximum rotation angle θ,
For example, it is actually impossible to change the rotation angle of the spindle 2 with only one motor as described above.

By the way, the above-mentioned interval (α) is set to zero and the holder is
11 and the cam body 9 are fixed from the outside and the rotation is set to zero, and the cam body 9 is stopped.
_{As a} matter of course, ₁ (movement angle) is the same amount of movement of the needle 6 as the rotation angle (θ) of the spindle 2 and only the same feed amount as the diameter of the wire (W) can be obtained. That is, in this case, the feed amount θ ₁ of the cam body 9 is constant, and it is impossible to change the winding pitch of the wire.

The above-mentioned adjusting projection 14 can be made to project freely by screws or fitting, but it is also possible to replace it with one having a different length.

g. Effect of the Invention Since the needle swinging mechanism in the winding machine according to the present invention is configured as described above, the following effects can be obtained.

That is, in the conventional configuration, the rotation angle of the cam body is fixed to match the rotation angle of the spindle, but the rotation angle (α) of the holder when the spindle rotates in the reverse direction is adjusted to the adjustment protrusion and the stopper. By setting freely within the free rotation angle range of the spindle by and,
The amount of movement of the needle per winding can be set arbitrarily, and by making the pitch of the parallel winding of the wires during winding smaller than the diameter of the conventional wire, it is possible to perform more finely than before. It is a thing.

[Brief description of drawings]

1 to 4 are for showing a needle rocking mechanism in a winding machine according to the present invention. FIG. 1 is a cross-sectional view showing the entire structure, and FIG. 2 is a sectional view taken along line XX of FIG. FIG. 3 is a sectional view taken along a line, FIG. 3 is a configuration diagram showing a cam body, and FIG. 4 is a plan view of a main portion showing a winding state. 2 is a spindle, 3 is a mounting portion, W is a wire, 5 is a needle arm, 6 is a needle, 8 is a first rotation transmitting body (first one-way clutch), 9 is a cam body, and 10 is a second rotation transmitting body. (Second one-way clutch), 11 is a holder, 14 is an adjusting protrusion, and 15 is a stopper.

Claims (1)

[Scope of utility model registration request] 1. A wire (W) is rotatably supported by a mounting portion (3) provided on an upper portion of a spindle (2) capable of reciprocating within a range of vertical movement and rotation angle (θ) so as to be repeatedly tilted. Needle arm (5) with a needle (6) for
A shaft supporting portion (4) and a spring member (7) provided in the mounting portion (3) for holding the needle arm (5) in a tiltable manner, and a first shaft coaxially outside the spindle (2). 1. A cam body (9), which is provided via a one-way clutch (8) and is composed of a heart cam that comes into contact with the protrusion (P) of the needle arm (5), and is coaxial with the outside of the cam body (9). 2 Holder (1) provided via one-way clutch (10)
1), the adjusting projections (14) provided on the pair of projecting pieces (13) of the holder (11), and the adjusting projections (14) provided between the adjusting projections (14). The needle (6) is provided with a longitudinal stopper (15) that abuts against and is fixedly arranged, and the interval (α) between the adjusting protrusion (14) and the stopper (15) is variable. A needle swinging mechanism in a winding machine, which is configured to variably adjust the feed amount (H, I) of the wire.