JPS5857063B2 - Transport jig for electrical work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transport jig for electrical work that mechanizes the insertion of a coil into the stator core of a mold, the connection of coil terminals, and the like.

Conventionally, the process of inserting coils into the molded stator used an automatic winding insertion machine that combines a winding machine and a coil inserter. The coil terminals were processed manually.

In addition, the connection and shaping work was partially automated by hand, or automated to the extent of adding a band link device.

Such conventional methods have disadvantages in that they require a large number of handling operations and are likely to damage the coil, and also require a large number of positioning mechanisms, making the device expensive.

Furthermore, it also has the disadvantage that it is difficult to attach an attachment for fixing the coil terminal.

In order to eliminate these drawbacks, jigs as shown in FIGS. 1 to 5 have also been developed.

In this method, the stake core transport means itself is used as a jig, and the stator core 1 is set on the transport pallet body 3, and the connector 2 for connecting the coil terminal is set on the connector positioning pin 4. .

The extended portion of the coil terminal set in the groove of the conductor portion 2' of the connector 2 is set in the coil clamper 5.

In this case, positioning of the stator core 1 in the X-X direction is performed by a stopper 6, and positioning of the stator core 1 in the radial direction is performed by pressing a core holder 7 provided on the work unit side with a stopper 6.
This was done by pressing the stator core 1 diagonally downward by holding it down with the arm 9 through the stator core 1.

At this time, the stator core 1 is pressed against the zero surface.

Here, the center of the set state of stator core 1 is B
The center of the device for inserting and shaping the coil into the stator core 1 is point C, and point C was set slightly diagonally to the upper right of point B.

In this case, for example, the 0 dimension is 0.2 to 0.25 mx,
The H dimension was set to 0.2 to 0.25 mm.

In this way, even if there is some variation in the dimensions of the stator core 1, the stator core 1 can be moved from point B to point C, and the stator core 1 can be moved by the exposed portion of the tip of the coil insertion device or shaping device. So the centers were easily aligned.

At this time, the gap E between the stake core 1 and the pallet body 3
was set at about 0.5 degrees.

Note that F is a hole into which a locating pin 11 is inserted to position the pallet body 3.

FIG. 2 shows the state in which the stator core 1 is positioned on the conveyor 10 by the locating pin 11. When conveying a conveying jig, the locating pin 11 is lowered, the jig is lowered onto the chain 12, and the chain 12 is moved. Transport by.

On the other hand, the coil terminal 13 is clamped by the plate spring part 5' of the coil clamp 5, and is inserted into the groove of the conductor part 2 of the connector 2, and swaged or soldered in the direction of U-U'J in FIG. The connections were made using methods such as spot welding or spot welding.

Therefore, in the electric work jig mentioned above, the stator core 1
When the stacking thickness W changes, it is necessary to change the width W on the pad 1/cut side.

Further, unless W<W' is satisfied and w'-w is not kept within a certain value, there is a risk that the stake core 1 may wobble within the pallet body 3.

Furthermore, the coil clamper 5 may become sagging in the coil terminal clamp portion, and if the diameter of the wire changes, the clamping state of the wire may change easily, causing thin wires to come loose. Another problem was that it was difficult to clamp two wires with different diameters.

The purpose of the present invention is to solve the above-mentioned drawbacks of the prior art, and even when the stacking thickness of the stator core changes, it can be held well within the pallet body without changing the setup.
When holding the coil terminal, it can fully accommodate changes in wire diameter, and it is also possible to hold two wires with different diameters, and the coil can be automatically inserted into the stator core while minimizing coil scratches. It is an object of the present invention to provide a transport jig for electric work for a molded stator that can be inserted into a molded stator.

A production line using the conveyance jig of the present invention conveys the pallet body conveyance jig with the stator core set on a conveyor, places electrical work equipment on both sides of the conveyor,
Inserting the coil and connecting the coil terminals are performed while the stator core is placed on the transport jig.
The number of handling operations is considerably reduced.

In addition, in the conveyance jig of the present invention, positioning of the stake cores in the stacking thickness direction is performed by a stopper on one side and a core clapper biased with an elastic body on the other side, thereby ensuring reliable positioning even if there are variations in stacking thickness. The structure allows the stake core to be held, and also eliminates the need to change the setup when changing the stacking thickness. This allows the stator core to follow the insertion jig, absorbing variations in the stator core.

Further, in the coil terminal clamping device, a plate spring having a hole that fits into a protrusion formed in a part of the fixing bolt is biased toward the fixing bolt, and a plate spring is attached between the base of the protrusion and the plate spring. A mechanism for holding the end of the coil is used so that it can be held well even when the coil wire diameters are different.

The present invention will be explained in detail below.

6 to 9 show an embodiment of the present invention,
The entire conveyance jig is the same as that shown in FIG.

That is, also in this embodiment, the radial positioning of the stator core 1 is performed by the pallet body 3 and the core presser 7 urged by an elastic body, that is, a spring 8.

Therefore, the stator core 1 is always pressed in the 0-plane direction, but if there is some variation in the dimensions of the stator core 1, the stator core 1 will follow the direction from its center B to the center C of the insertion device, so the variation will occur. can be absorbed.

On the other hand, as shown in FIGS. 6 and 7, the stator core 1 is positioned in the stacking thickness direction by a stopper 6 fixed to the pallet body 3 on one side, and the other side is biased by an elastic body, that is, a spring 18. This is done using the core clamper 14.

That is, the clamper/TM15U of the core clamper 14,
Rotatably held in a holder 16 using a pin 17,
A spring 18 is inserted between the other end of the core clamper 14 and the pallet body 3, and the repulsive force of the spring 18 constantly presses the clamp claw 15 against the stator core 1 side.

Note that the holder 16 is fixed to the pallet body 3 with bolts 19.

Therefore, the stake core 1 is reliably held by the stopper 6 and the clamp claw 15 of the core clamper 14.

In this way, the wobbling of the stator core 1 will be completely eliminated, and even if the lamination thickness dimension W of the stator core 1 changes slightly, the change can be absorbed by the flaps 18, so there is no need to change the setup due to the change in the lamination thickness. .

The stator core 1 is set by pushing the spring 18 side portion 15' of the clamp claw 15 into an open state.

On the other hand, in the coil terminal clamp device, a fixed claw 22 fixed on a base 21 is partially provided with a protrusion 22', and a plate spring 23 is formed with a hole 23a that fits into the protrusion 22'. With the portion 23a fitted to the protrusion 22', the plate spring 23 is urged toward the fixing claw 22 side, and the protrusion 23b of the plate spring 23 is pressed.
The other end of the coil spring 24 housed in the spring holder 25 is fitted, and the coil spring 24 further urges the plate spring 23 toward the fixing claw 22 side.

Therefore, the coil terminal 13 is pushed in from above, and the coil terminal 13 is held at the base of the fixed protrusion 22'.

At this time, the coil terminal 13 is pressed against the fixing bolt 22 side by both the leaf spring 23 and the coil spring 24, and is firmly held at this portion.

By doing this, it is possible to prevent the plate spring 23 from becoming sagging, and even when the wire diameter changes, the coil terminal 13 is latched to the protrusion 22 of the fixing bolt 22, so that it hardly comes off upward.

Further, even when there are two coil terminals 13, it is possible to hold them completely, and even when the wire diameters are different, there is no influence at all.

As described above, the present invention has very excellent effects as exemplified below.

(1) Since the coils are inserted using a conveyance jig using a pallet, the number of times the stator core is handled is reduced, and the chances of damage to the coils can be reduced.

(2) The radial positioning of the stator core is done floatingly via an elastic body, so the stake core can be moved by looking into a device such as a coil inserter, so that no force is applied to the stator core. is possible,
Deformation of the stake core can be prevented.

Further, since the precision of the conveying jig does not need to be relatively rough, machining is easy.

(3) Positioning of the stator core in the stacking thickness direction is performed by a stopper on one side and a core clamper biased by an elastic body on the other side, so the stator core is securely fixed and there is no need to change the setup when changing the stacking thickness. can do.

(4) Since it has a function to attach a connector and a function to clamp a coil terminal, the connection of the coil terminal can be easily automated.

(5) The coil end clamping device has a structure that can securely hold even when wire diameter changes and two wires are held, so there is no fear that even thin wires will come off.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional conveyor jig for electrical work, Figure 2 is a sectional view of Figure 1 A-person line in a state where it is positioned on a conveyor,
Fig. 3 is an enlarged explanatory view of the connector and coil clamper portion in Fig. 1, Fig. 4 is a view taken in the direction of arrow S in Fig. 3, and Fig.
The T arrow view in the figure, FIG. 6 is the first embodiment of the present invention.
7 is an enlarged explanatory view of the core clamper portion of FIG. 6; FIG. 8 is a longitudinal sectional view of a coil end clamping device according to an embodiment of the present invention; FIG. 9 is a partially enlarged explanatory diagram of FIG. 8. 1...Stake core, 3...Pallet body, 6...Stopper, 7...Core holder, 8...Splash, 13 ...... Coil terminal, 14... Core clamper 18... Spring, 22... Fixed part, 23... Leaf spring,
24... Spring.

Claims (1)

[Claims] 1. A jig for inserting a coil into the stator core of a modle and connecting the coil terminal, wherein the positioning of the stator core set on the conveying pallet main body in the stacking thickness direction is performed by a stopper on one side of the jig. The radial positioning of the stator core is performed by a pallet body and a core holder biased by an elastic body, and the coil end is held by a coil end clamp device. Transport jig for electrical work. 2. The coil end clamping device urges a leaf spring having a hole that fits into a projection formed in a part of the fixed bolt toward the fixed claw side, and clamps the coil end between the base of the projection and the leaf spring. A conveyance jig for electrical work according to claim 1, which is adapted to be held. 3. The conveyance jig for electrical work according to claim 2, wherein the leaf spring is further urged toward the fixed claw by another elastic body.