JPS58107048A - Coil inserting device - Google Patents

Abstract

PURPOSE:To reduce the insertion resistance of coil by a method wherein the transferring position of a transferring plate is enabled to select arbitrarily using a stopping means. CONSTITUTION:When the upper edge part of a coil pusher 4 comes to the position a little lower than the lower edge part 6a of a core 6, a collar 15 provided on a push rod 12 makes the first stopping means 8 to transfer to the outside of the diametrical direction, and a transferring plate holder 7 is pushed up at the same time. The coil insertion stroke is advanced in the condition as it is, the transferring plate holder 7 touches the second stopping means 10 when the coil pusher 4 comes to the position a little before the end edge of the coil insertion stroke, and ascending of the transferring plate holder 7 is stopped. When the push rod 12 is made to ascend more over, the coil pusher 4 ascends bending the compression spring 13, and the coil 5 on the coil pusher 4 is inserted to complete the coil insertion process.

Description

[Detailed Description of the Invention] The present invention relates to a device for inserting a coil into a stator core for a rotating electrical machine, which has the function of reducing coil insertion resistance and the versatility of not being restricted by stator winding specifications. An object of the present invention is to provide a coil insertion device.

The conventional coil insertion device is generally called a fixed blade type coil insertion device in which all the blades 1 are fixed to a blade holder 2 as shown in FIG. 1, or the coil insertion device shown in FIG.
As shown in No. 3-, there is a coil insertion device generally called a moving blade system in which all or part of the blades 3 are fixed to a coil pusher 4. The fixed blade type coil insertion device shown in Fig. 1 has a large frictional resistance acting between the blade 1 and the coil, so the coil is easily damaged when inserting the coil, and there are also large restrictions on the applicable wire diameter. It has the following drawbacks.

The moving blade type coil insertion device shown in Figs. 2 and 3 has the advantage of reducing coil insertion resistance, but on the other hand, for example, when inserting the main and auxiliary coils of a single-phase motor into the stator core at the same time. In order to downsize the electric motor, abnormal forces are applied to the moving blade 3 and the coils depending on the stator winding specifications, such as shortening the circumference of the coil as much as possible and lowering both coil ends of the stator. Therefore, there was a restriction that it could not be used effectively.

That is, in FIGS. 4 to 6, the suppression of the coil insertion device that originally acts on the coil is due to the pushing force in the axial direction of the stator core until about 10 ff below the end of the insertion stroke (the state shown in FIG. 4). and the remaining strokes are
As shown in FIG. 6, the coil 5 on the coil pusher 4
Ideally, the third
In the coil insertion device having the configuration shown in the figure, even though the coil pusher 4 has moved close to the end of the insertion stroke and the coil insertion in the axial direction into the stator core 6 has been completed, the coil pusher 4 Since there is a movable blade 3 fixed to the coil pusher 4, the moving stroke of the coil pusher 4 acts as a pushing force in the axial direction, as shown in the diagram of the coil set on the central axis side of the coil pusher 4. The coil is pulled in the axial direction, and the coil insertion resistance increases rapidly, causing damage to the coil, damage to the insertion jig, and
This caused coil insertion height imbalance.

The present invention eliminates the drawbacks of the conventional device described above, and embodiments thereof will be described below with reference to FIGS. 7 to 9.

In FIG. 7, reference numeral 3 denotes a movable blade, which is attached to a movable blade holder 7 provided at the bottom of the coil pusher 4. The upper surface of the movable blade holder 7 has a first
A stop means 8 is mounted in a radially slidable manner and normally engages the support column 9. A second stop means 10 is attached to the upper end surface of the support column 9. A movable blade push-down rod 11 is attached to the lower surface of the coil pusher 4. The push rod 12 is provided with a stepped portion 121L, and a movement start timing adjustment collar 14 of the movable blade holder 7 is provided via a compression spring 13. Furthermore, the push rod 12 is provided with a collar 1 for pushing up the movable blade holder 7.
6 is provided at the upper end. The push collar 16 is formed with a tapered portion 161L for moving the first stop means 8 provided on the movable blade holder 7 in the radial direction to release the engagement with the support column 9.

Further, a spacer 16 is provided at the tip of the push rod 12 to further push up the coil pusher 4. Reference numeral 17 denotes a pulling rod fixed to the coil pusher 4, which passes through the center of the spacer 16 and is slidably provided with respect to the spacer 16 and the push rod 12.

In the above configuration, a drive source such as a hydraulic cylinder (Figure T5
The push rod 12 and the spacer 16 rise using the tin), the spacer 16 hits the lower end of the coil pusher 4, the coil pusher 4 rises, and the coil pusher 4 moves up.
4 begins the coil insertion stroke. A push collar 1 is provided on the outer diameter of the push rod 12 at a position where the upper end 1 of the coil button shear 4 is approximately 1ON lower than the lower end surface 6a of the iron core 6.
The tapered portion 161L of 6 moves the first stop means 8, which is attached to the movable blade holder 7 so as to be slidable in the radial direction, radially outward (and simultaneously pushes up the movable blade holder 7. In this state, the coil As the insertion stroke progresses (that is, the coil pusher 4 and the movable blade 3 move synchronously), the movable blade holder 7 hits the second stopping means 10 at a position where the coil pusher 4 is about 10jFl before the end of the coil insertion stroke. The movement of the movable blade holder 7 is stopped. When the push rod 12 is further raised to advance the coil insertion stroke, the compression spring 13 is bent and the coil pusher 4 is raised, causing the coil pusher 4 to move upward. The coil insertion process is completed by pushing up the coil 6.

FIG. 8 shows an intermediate state of the above-mentioned insertion process.

In this device, at the end of the insertion process, the movable blade 3 is stopped by the second stopping means 10 at a position slightly protruding from the upper end surface of the stator core 6, so that the coil 5 is inserted into the slot of the stator core 6. There is nothing you can do to prevent yourself from being pushed in any direction.

Further, as described above, since the push collar 15 that pushes up the movable blade holder 7 is provided with a compression spring 13 at the bottom thereof, this deflection absorbs the final upward stroke of the coil pusher 4.

When the above coil insertion process is completed, the coil pusher 4
The movable blade 3 is returned to the position shown in FIG. 7 using a drive source (not shown) such as a hydraulic cylinder, but the movable blade 3 is returned to the position shown in FIG. Return to original position.

In general, it has been confirmed through experiments that the insertion stroke of the coil pusher 4 and the insertion resistance of the coil are at their maximum when the busy coil pusher 4 comes to the lower end surface 61L of the iron core 6, as shown in FIG. According to the coil insertion device of this embodiment, since the movement position of the movable blade 3 can be arbitrarily selected by the second stopping means 10, the movable blade can be operated within the range of the section 3 where the coil insertion resistance is particularly large in FIG. It can fully meet the specifications.

As described above, according to the present invention, it is possible to overcome the disadvantage of conventionally used fixed blade type coil insertion devices in that stator winding specifications with large coil insertion resistance cannot be inserted, and the disadvantage of moving blade type coil insertion devices. The two drawbacks of abnormal force being generated at a certain coil insertion end can be completely eliminated, and a highly versatile coil insertion device can be obtained.

Further, according to the configuration of the present invention, it is possible to use the main body of a conventional coil insertion device that is generally used without losing compatibility.

[Brief explanation of the drawing]

Fig. 1 ν Fig. 2 and Fig. 3 are sectional views of conventional coil insertion devices, and Fig. 4, Fig. 6, and Fig. 6 show the relationship between the coil pusher and the coil when compressing and inserting the coil. 7 is a sectional view of a coil insertion device according to an embodiment of the present invention, FIG. 8 is an enlarged sectional view of the same essential part, and FIG. 9 is a coil insertion stroke of a coil butcher. FIG. 3 is an explanatory diagram showing the relationship between the coil insertion resistance and the coil insertion resistance. 1... fixed blade, 3... old moving blade, 4... coil pusher, 7... old moving blade boulder-18... first stopping means, 1o
・Old...Second stopping means, 12...Push rod, 1
4...Movement start timing adjustment collar, 16.
...Pressed color. Name of agent: Patent attorney Toshio Nakao and one other person II
Figure 4 Figure 6 Figure 5 Figure 8

Claims (1)

[Claims] (1) A blade that guides a coil into a slot of a stator core for a rotating electric machine and a coil pusher that presses and inserts the coil are provided, and a plurality of blades are supported by a movable blade holder so as to be movable with respect to the coil pusher;
A connecting rod for driving the coil pusher is provided with a transition means for moving the movable blade holder via an elastic body, and a first stop means for regulating the start of movement of the movable blade holder, and the movement is independently controlled. A coil insertion device according to claim 1, comprising a fixed blade and a movable blade supported by a movable blade holder.