JPS6268045A - Inserter for stator coil - Google Patents

Abstract

PURPOSE:To improve the mounting workability of a stator coil to blades while reducing the number of working processes by disposing a plurality of pins for engaging the coil along the axial direction upright in blade guides in each blade. CONSTITUTION:A stator core 1 is fixed to a cradle 2, a blade holder 6 is inserted into the stator core 1, and each blade 3 is set under the state in which each tooth head section 4 in the stator core 1 is covered with the blades 3. On the other hand, previously wound stator coils 12 are engaged with predetermined pins 11 for a blade guide 10, the blade guide 10 is moved forward to the blade 3 side, and respective guide groove 10a for the blade guide 10 is fitted to the nose sides of each blade 3. Consequently, the stator coils 12 retained to the pins 11 are inserted among the blades 3. When the blades 3 are shifted to the left in the axial direction together with the blade guide 10, the stator coils 12 are housed into slots 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a stator coil insertion device in which a plurality of blades are arranged so as to be movable in the axial direction along tooth heads of a stator core.

[Technical background of the invention and its problems] Conventionally, in this type of stator coil insertion device, a pre-wound stator coil is first inserted into a predetermined position around a plurality of blades arranged in a stator core. The stator coil is inserted between the blades and then moved in the axial direction of the stator core to insert the stator coil into the slot of the stator core.

However, with the above configuration, the work of installing the coils on the blades is done manually, and the coil ends of the coils that have already been inserted into the slots protrude from the axial end surface of the stator core.

Therefore, the protruding coil end or stator core gets in the way when attaching the coil to the blade, resulting in poor workability.

Therefore, in order to solve the above-mentioned drawbacks, there is a method of using a dedicated coil transfer jig to transfer the stator coil to the blade. In this method, a coil is first set on a coil transfer jig, and then the coil transfer jig is advanced toward the blade to transfer the set coil toward the blade. After this, the coil transfer jig is moved back, and next time, instead of the coil transfer jig, a blade guide having a guide groove is advanced so that the guide groove fits into the tip side of the blade, and the blade is rotated to the axis. direction and insert the coil into the stator core. However, such a configuration requires a dedicated coil transfer jig and a device with a relatively complicated mechanism for setting the blade to which the coil has been transferred onto the stator core, resulting in an overall increase in cost. Also,
Since it is necessary to load the coil onto the coil transfer jig and then transfer the coil from the coil transfer jig to the blade, there is a problem that the number of tasks increases.

[Object of the Invention] The present invention has been made in view of the above points, and an object thereof is to provide a stator that can improve the workability of attaching stator coils to blades and reduce the number of operations. To provide a coil insertion device.

[Summary of the Invention] The present invention is characterized in that a plurality of coil engagement pins extending along the axial direction of each blade are erected on the inner circumferential side of each blade in the blade guide. As the blade guide advances, the stator coil engaged with the pin is transferred between the blades, so that the blade guide can also be used as a coil transfer jig.

Embodiment J of the F Invention A first embodiment of the invention will be described below with reference to FIGS. 1 to 4.

In FIGS. 1 and 2, reference numeral 1 denotes a stator core, which is fixed to a pedestal 2. 3 is the tooth head 4 of the stator core 1
A plurality of blades are arranged in a substantially cylindrical shape along
is fixed. This blade holder 6 is removably connected to a rod 9 of a hydraulic cylinder device 8 via a connecting mechanism 7, so that the blade 3 is moved inside the stator core 1 in the axial direction by the hydraulic cylinder device 8. It is now possible to move back and forth. Reference numeral 10 denotes a blade guide, which has a plurality of guide grooves 10a on its outer periphery that can be fitted to the distal end side of each blade 3, and is movable in the direction along the blade 3. Here, 11 is a plurality of pins for engaging pre-wound stator coils 12, and these pins are arranged along the axial direction of each blade 3 and positioned on the inner peripheral side of each blade 3 in the blade guide. 10 approximately tapered slopes 1
It is erected at 0b.

Next, the operation of the above structure will be described with reference to FIGS. 3 and 4. First, the stator core 1 is fixed on the pedestal 2. Next, the blade holder 6 separated in the coupling mechanism 7 is inserted into the stator core 1 as shown in FIG. 1, and set so that each blade 3 covers each tooth head 4 of the stator core 1. . Thereafter, the blade boulder 6 is connected to the rod 9 of the hydraulic cylinder system w8 by the connection mechanism 7. On the other hand, the pre-wound stator coil 12 is engaged with a predetermined pin 11 of the blade guide 10. Thereafter, the blade guide 10 is advanced toward the blade 3, and each guide groove 10a of the blade guide 10 is fitted into the tip end side of each blade 3, as shown in FIG.

As a result, the stator coil 12 that is engaged with the pin 11 is press-fitted between the blades 3, and is installed on the blade 3 side. Thereafter, when the hydraulic cylinder device 8 is driven to move the blade 3 together with the blade guide 10 to the left in the axial direction (in Fig. 3), the stator coil 12 is housed in the slot 13 as shown in Fig. 4. be done.

According to this embodiment having such a configuration, initially the stator core 1
Since the stator coil 12 is engaged with the pin 11 installed upright on the blade guide 10 at a position away from the stator coil 12, the stator coil 12 is not inserted into the stator core unlike the conventional method of attaching the stator coil directly to the blade. The coil ends of the stator coils that are attached to the coils are no longer in the way, and the workability of installing the coils is improved. Furthermore, since the stator coil 12 is transferred to the blade 3 side using the blade guide 10 which is originally necessary for inserting the stator coil 12, the blade guide 10 is also used as a coil transfer jig. Therefore, I
The culm is removed and the number of man-hours can be reduced by two. Furthermore, blade guide 1
Since it has a simple configuration in which the pin 11 is erected at 0, there is no need for a dedicated coil transfer jig and complicated equipment as in the past, and the cost is reduced accordingly. Besides, blade 3
Since the blade guide 10 and the stator coil 12 are integrally moved in the axial direction within the stator core 1, the resistance when the stator coil 12 is inserted into the slot 13 is reduced, and the stator coil 12 is fixed. Damage to the child coil 12 can be prevented.

FIG. 5 shows a second embodiment of the present invention, in which the blade 3 of the first embodiment is formed as an integral part. To, tooth head 4
The blade 16 is constructed from a pair of flexibly deformable plate members 15° 15 having guide portions 14 applied to both sides of the blade. According to this second embodiment, the same effects as in the first embodiment can be obtained, but in particular, the interval between the blades 16 can be increased by bending and deforming the plate-like members 15 and 15. Therefore, when the stator coil 12 is transferred between the blades 16, damage to the stator coil 12 can be more reliably prevented.

[Effects of the Invention] As is clear from the above description, the present invention has a plurality of coil engagement pins erected in the blade guide along the axial direction of each blade, which improves the workability of attaching stator coils to the blades. This has the excellent effect of improving the performance and reducing the number of work steps.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, and FIG. 1, FIG. 3, and FIG. 4 are sectional views of main parts showing different states, and FIG. 2 is a main part. FIG. 5 is a diagram corresponding to FIG. 2 showing a second embodiment of the present invention. In the drawing, 1 is a stator core, 3 is a blade, 4 is a tooth head,
10 is a blade guide, 10a is a guide groove, 11 is a pin, 12 is a stator coil, 13 is a slot, and 16 is a blade. Applicant Toshiba Corporation Procedural Amendment September 1986 250 Japanese Patent Application No. 1988-207122 2 Title of invention Stator Il Insertion Gate 3 Relationship with the person making the amendment Case Patent applicant (307) Tankshu Shikikai Nei Ni Topucho 4, Agent 460 Address 6 Nissan Life Insurance Company, 6-15 Sakae 4-chome, Naka-ku, Nagoya Detailed description of the invention in the specification to be amended. 7. Contents of the amendment (1) "Press fit" written in the opening of the fifth line of page 6 of the specification box is corrected to "insertion." (2) ``The blade 3 is stored...'' written from page 6, line 8, L1 to page 6, line 10, is revised to 1, as in C. Record

Claims (1)

[Claims] 1. A plurality of blades are arranged so as to be movable in the axial direction along the tooth head of the stator core, and a blade guide having a plurality of guide grooves is arranged so that the guide groove fits into the tip side of each of the blades. The stator coil located between the blades is inserted into the slot of the stator core by advancing the blades in the axial direction, the blade guide having an axial direction for each blade. A plurality of pins for engaging the coils along the direction are placed upright on the inner peripheral side of each of the blades, and the stator coils engaged with the pins are transferred between the blades by advancing the plate guide. A stator coil insertion device characterized by: