JPS5854732B2 - Stator coil insertion machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stator coil insertion machine, and more particularly to a stator coil insertion machine that forms a wedge and inserts it into each groove of a stator at the same time as a coil.

In conventional stator coil insertion machines, the upper jig and lower jig are integrated, and the wedge maker is set in the drive device, so it is necessary to disassemble, assemble and adjust each time it is replaced, and the wedge maker and drive When the device is assembled, the radius of the upper jig must be adjusted so that the distance between the lower jig and the wedge maker becomes a predetermined distance.

Also, since the index angle differs depending on the jig slot, change the lever pin position to change the hook stroke.
By changing the position of the drive device, it is necessary to adjust the length of the hook to find the position in relation to the index plate, and it is also necessary to adjust the cam and cam plate for skipping, and the length of the wedge must be changed. In this case, the center crank radius (or swing radius) was changed and adjustments were made while looking at the length of the wedge that actually appeared.

In the present invention, the wedge forming mechanism attached to the jig is not assembled to the drive part, the drive part is fixed to the insertion machine body, and the wedge forming part is integrated with the insertion jig,
When replacing the insertion jig that integrates the wedge forming part,
The wedge forming section on the jig is automatically connected to the drive section simply by placing the insertion jig at the starting position on the insertion machine main body.

Next, the wedge feeding stroke length and the index number of the wedge storage cylinder can be determined by simply adjusting the respective scales.

Note that the lower end of the insertion jig and the hydraulic cylinder are connected by an automatic coupling device, and removal can be achieved in one operation.

Embodiments of a stator coil insertion machine according to the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 indicates a stand box, on which a storage box 3 for the wound wedge material 2 is erected by a supporting member 4, and the storage box 3 is
A wedge forming drive body 5 is installed obliquely in parallel with the platform 1, and a cradle 7 for an insertion jig 8 supported by a fulcrum shaft 6 is installed inside the platform 1, and a part of it is inserted into the notch 1 of the platform 1. ′ to protrude to the outside.

The pedestal 1 has an operating hydraulic cylinder 9, and the pedestal 7 has a hydraulic cylinder 11 for movable the pedestal connected to the inner surface of the pedestal casing 1 by a pin 10. A rotational movement is performed in the direction of arrow a in the figure.

On the upper surface of the front plate 5' of the wedge forming drive body 5,
A support rod 1 having a stator clamp 12 for clamping the stator inserted into the tip of the upper jig 8a of the insertion jig 8
3 is provided protrudingly, the drive lever 17 and hook 18 of the indexing ratchet 16 of the wedge storage cylinder 14 in the insertion jig 8 are provided, and the adjustment fulcrum 50 of the drive lever 17 is made to protrude from the upper part of the front plate 5'. Tighten with screw 15.

The wedge material 2 is guided through guide rollers 19 and 20 between a feed roller 21 and a pinch roller 22 mounted on an insertion jig 8, and cut into a predetermined length by cutters 23 and 24 shown in FIG. .

Reference numeral 25 denotes a receiving roller of a cutter 26 that projects from a lower jig casing 27 provided on the insertion jig 8.

The lower jig casing 27 has a punch 28, which is attached to a punch support 34, and a movable punch joint 29 thereon is connected to a fixed joint 30 of the wedge forming drive body 5. .

Here, in the insertion jig 8, the height of the punch support material 34 changes depending on the inner diameter of the stator, but the height of the punch joint 29 is adjusted to maintain a constant distance from the center of the insertion jig 8. do.

Therefore, even if the insertion jig 8 is replaced, there is no need to move or adjust the wedge forming drive body 5 and the fixed joint 30, and the punch 28 is located directly above the cut wedge material 2a, and the wedge material 2a is attached to the die plate. 31 and is guided by a punch guide plate 32.

Reference numeral 33 denotes a punch guide rod, which enters a guide hole 35 formed in the punch support member 34 and has a stopper piece 36 in contact with its upper end.

This stopper piece 36 is attached to the punch support material 3 when removing the jig.
This is to prevent the inserter 4 from falling out of the insertion jig 8.

A transmission gear 38 is fixed to the shaft 3T of the wedge feed roller 21, and a pusher 8 is provided at the rear of the lower jig case 27.
A pusher rod 40 connected to the hydraulic cylinder 9 for operating the insertion jig by a joint 30 is installed inside b.
The pusher rod 40 passes through the lower jig case 27 and has a rod 41' having a stripper 41 inserted therethrough.

The lower jig casing 27 has a wedge storage cylinder 14 attached to the shaft tube 42 loosely inserted around the pusher rod 40 via bearings 43, 43', and an indexing ratchet wheel 16 fixed to the outside thereof to store wedges. Recesses 14 are formed on the periphery of the cylinder 14 to store wedges formed at regular intervals.

45 indicates a return spring for the movable cutter 24. Next, the drive mechanism of the wedge forming drive body 5 will be explained with reference to FIGS. 1 to 4.

The wedge forming drive body 5 includes a wedge feed roller drive mechanism 46 (see FIGS. 1 and 3) and a storage tube drive unit 4 that operates the hook 18 to rotate the indexing ratchet wheel 16.
γ (see Figures 3 and 4).

The drive cam 48 of the punch 28 is housed in a cover case 49 and is attached to a through shaft 52 of the cover case 49 together with a cylindrical cam 51 for swinging the drive lever 17 about an adjustment fulcrum 50, and is a gear fixed to the coaxial shaft 52. 58 is attached to a shaft 56, and another gear 55 of the shaft 56 meshes with a gear 58 of a motor 57, transmitting the rotation of the motor 57 to the through shaft 52, rotating the cylindrical cam 51, and rotating the indexing ratchet wheel 16. It also rotates the drive cam 48 to actuate the support rod 61 of the fixed joint 30, which has the rotor 60 inserted into the cam groove 59.

62 is a lever that automatically releases the connection with the movable punch joint.

Further, a crank 63 for adjusting the wedge feed amount of the wedge feed roller drive mechanism 46 is provided at one end of the through shaft 52, and a rod 64 is attached to the crank 63 via a thumbscrew 66.
The adjustment crank 63 has a scale 80, and when the center position of the thumbscrew 66 is aligned with the scale 80, the reading will be the wedge 2a.
The scale 80 is cut so that the feed length is .

The rod 64 is connected by a pin 67 to a lever 65, which projects from a one-way clutch 70 fixed to a shaft 69 with a friction brake 68.

The friction brake 68 prevents the wedge from reversing or forwarding.

The shaft 69 is further provided with a gear 72, which meshes with the gear 7.
8 is fixed to a shaft 75 which is attached to a lever 74 provided on a shaft 69, and a gear 76 is provided on the same shaft 75, and this gear 76 meshes with the transmission gear 38 of the insertion jig 8 and functions to send out the wedge material 2. .

Here, the transmission gear 38 that meshes with the gear 76 has a different distance from the jig center depending on the diameter of the stator.

Therefore, a spring 79 is installed on the extension of the lever 74, and the gear 7
6 toward the center of the jig, and the insertion jig 8
When the insertion jig 8 moves, it is meshed with the transmission gear 38 and pushed back, so that even if the insertion jig 8 has a different diameter, the normal fully engaged state is always maintained.

Note that the movement of the lever 74 is limited so that the gear 76 does not jump out unnecessarily when the insertion jig 8 is removed.

Reference numeral 77 indicates a support frame for the shaft 69, and reference numeral 78 indicates an insertion rod for inserting into the cylindrical cam 51 attached to the drive lever 17.Next, the operating state of the present invention will be described.

First, a predetermined insertion jig 8 is fixed to the pedestal 7. This is attached to the joint 39 at the lower end of the pusher rod 40 of the insertion jig 8.
is pressed into the tip of the hydraulic cylinder 9 to couple it.

Next, the pedestal 7 is rotated about the fulcrum shaft by the hydraulic cylinder 11 and moved to the position indicated by the chain line in FIG.

In this state, the lower jig casing 27 fixed to the insertion jig side and the wedge forming drive body 5 are connected. At this time, the fixed joint 30 and punch joint 29 are automatically connected, and the feed roller 21 Transmission gear 38 and gear 7
6 will automatically engage.

Next, the wedge materials 2a are sequentially inserted into the recesses 44 of the wedge storage tube 14 of the insertion jig 8 using the punch 28 to form the wedges 2b.

The wedge 2b is elastic and becomes stationary.

When the wedge 2b is fully inserted into the recess 44, a coil (not shown) is attached to the upper jig 8a, and the stator (
When the stator (omitted in the figure) is fitted and an insertion command is issued, the stator clamp 12 first presses the stator, then the hydraulic cylinder 9 for the insertion jig is activated, and the insertion jig 8
The pusher 8b pushes all the wedges 2b inserted and stored in the wedge storage cylinder 14 toward the upper jig 8a, and when the tips of the wedges 2b overlap the lower side of the stripper 41, the pusher rod 40 reaches the stripper 41. When the push-up is started and the coil is inserted into the groove of the stake, the wedge 2b closes the entire length of the opening of the groove of the stake.

The insertion is now complete, and the stripper 41, pusher rod 40, and pusher 8b return to their initial positions to complete the next wedge forming and storage operation, completing the cycle.

According to the present invention, by simply adjusting the length of the wedge using the scale and changing the indexing of the wedge storage tube using the scale, there is no need to disassemble and assemble the wedge forming part as in the conventional method, and the work can be done simply and easily in a short time. This is an advanced invention that can significantly improve work efficiency.

[Brief explanation of drawings]

The drawings show an embodiment of the stator coil insertion machine according to the present invention, in which Fig. 1 is a longitudinal sectional front view, Fig. 2 is a plan view of the insertion jig, and Fig. 3 is a plan view of the wedge forming 1 drive mechanism. Figure 4 is a side view of the same as above, Figure 5 is a vertical front view showing a part of the insertion jig in cross section, Figure 6 is a sectional view taken along line A-□A in Figure 5, and Figure 7 is FIG. 5 is a sectional view taken along the line B-B in FIG. 2...Wedge material, 2b...Wedge, 5...Wedge forming drive body, 1...
...Case, 8...Insertion jig, 8b...
Pusher 9...Hydraulic cylinder for operating the insertion jig, 11...Hydraulic cylinder for moving the pedestal, 1
4... Wedge storage tube, 23, 24...
・Cutter 27...Lower jig casing, 28...
. . . Punch, 46 . . . Wedge feed roller drive mechanism, 47 . . . Storage tube drive unit.

Claims (1)

[Claims] 1. A mechanism for wedge forming is divided into a driving part and a forming part, the driving part is provided on the main body side, the forming part is attached integrally with the insertion jig, and the insertion jig is moved to the drive part by a moving means. This is a stator coil insertion machine that connects the drive part and molding part.