JPS6056384B2 - coil inserter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil inserter used in the manufacture of rotating electric machines, and in particular, to the tooling of the coil inserter when the inner diameter dimension of the stator core, the slot groove shape, the number of slot grooves, etc. change. The present invention relates to a coil inserter that allows easy tool replacement related to replacement and wedge shape change.

Generally, in a coil inserter, if the inner diameter of the stator core, the shape of the slot grooves, or the number of slot grooves changes, the tooling for inserting the coils and wedges and the cutting and forming parts of the wedges must be replaced.

By the way, conventionally, coil inserters as shown in FIGS. 1 to 3 have been used.

To explain the general structure of this coil inserter, the main body 3 is provided with a tooling 1 that can be freely turned by a turning actuator 8. As shown in FIG.

This tooling 1 has a stator 10 attached to its tip, and an insulating wedge and a coil are inserted into the slots of the stator.The tooling 1 is a rotating tool with a plurality of grooves formed on the outer periphery to hold the wedges inserted into the stator slots. possible manganese 70
, an insertion table 5 for inserting the wedge of the magazine into the slot, and an actuator 7 for driving the insertion table. The wedge maker 4 cuts a strip of wedge material into a predetermined size corresponding to the slot length, bends it into a channel shape, etc., and then sequentially inserts the wedges into the grooves on the outer periphery of the magazine 70. The rotation of the magazine when inserting and holding the wedge into the groove of the magazine 70 is as follows:
This is done by a ratchet wheel 71 (FIG. 2b) that is provided in the magazine and rotates as a unit, and an indexing claw 16 (FIG. 2b) that moves in response to the wedge forming operation of the wedge maker 4. . The presser foot 11 is for fixing the stator 10 to the tip of the tooling 1. In such a device, in order to replace the insertion tooling 1, remove the tool presser foot (not shown) provided on the front plate 2 of the main body to prevent the tooling 1 from falling downward, and remove the indexing claw 16. Remove it and lower it through the notch of the main body 3 using the tooling turning actuator 8 to the position indicated by the dashed line (Fig. 1 1a).
position).

Next, a joint 6 connecting between the insertion base 5 at the end of the tooling 1 and the rod 7a of the insertion actuator 7,
Then, remove the bolts 15 that fasten the mounting plate 14 (Fig. 3) and the insertion actuator 7. This removal work of the tooling 1a1 is done by two or three workers, but is carried out by a crane or the like and replaced with a tooling for the next model.
Next, the wedge maker 4 (FIG. 2) is replaced with a male wedge cutter 18 that is attached to a cutter slide 17 that reciprocates in the vertical direction and cuts the wedge material 89, and a stand 1.
9, a wedge forming metal 20 for bending and forming the wedge, a punch guide 21 for the forming punch, a wedge cutter female 25, and a screw 2 attached to the punch shaft 22.
The punches 24 attached in step 3 must be removed one by one, replaced with each of the following models, and fixed in order to reveal the related positions. For example, there are many areas that require fine adjustment, such as the cutting quality of the wedge cutter and the shaping of the wedge. Also, if the thickness of the stator core changes with the tooling to be replaced next, even if tooling 1 has been changed in advance by external setup, wedge maker 4 will change the feed length of the wedge. It has to change.

In the conventional device, an output shaft 26 of a rotary actuator (not shown) rotates a drive gear 27, and also rotates a wedge material feed gear 28 and a cutting/forming gear 29, of which the gear 28 has a feed gear. disc 30 and feed screw 31
There is a T-shaped slide 32 whose eccentricity changes depending on the amount of eccentricity, and the feed amount must be changed by adjusting the eccentricity. Replacing tools for these parts requires a highly skilled technique called fine adjustment, and has the disadvantage of requiring a large amount of work time (setup change time). This was also the biggest reason why mechanization of winding work was delayed.

This invention aims to improve the above-mentioned drawbacks, and has a structure that allows tooling replacement, wedge cutting, and molding part replacement without the need for fine adjustment work and in a short time. The present invention provides a coil inserter.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 9.

In the figure, the same reference numerals as in FIGS. 1 to 3 indicate the same or corresponding parts, and 41 is a tool stocker located on the rear upper surface of the main body 3a, and has a wheel 44 at the bottom and moves along a presser guide 43. Replacement tooling 45a, 45b, 45c
(Fig. 5) can be freely selected. Reference numeral 41a denotes a notch in the tool stocker 41, which has a width such that the tooling 45 can be guided to the upper plate 42 when the tooling 45 is vertically erected by the tooling turning actuator 8a.

The replacement toolings 45a, 45b, and 45c are exchanged inside the tool stocker 41, so they have a structure that makes them easy to replace.The slider 12 of the insertion table 5 as shown in FIGS. It is supported by a supporting stand 46 and connected to the front part of the tooling by a connecting plate 47. A bearing 48 is fixed to the insertion table 5 with a bolt 49, and a hook 51 screwed into the rod 7a of the insertion actuator 7 is inserted into the shaft 50 of the bearing 48, thereby connecting the bearing 48 with the shaft 50 of the bearing 48. At this time, the support base 46 is also attached to the insertion actuator 7 and the transfer slope 52a attached by the bolt 15.
The slopes 46a and 52a for transfer are positioned on a receiving stand 52 having a holder 52 and are in contact with each other. These members are connected by bolts 53 and movable presser foot 54. Next, as shown in FIGS. 7A and 7B, the wedge maker 4a divides the cassette stand 55 and punches 24a having elongated holes inside.
After inserting the pin 56 and fixing it in a movable position within the elongated hole so that it does not come off, the cassette stand 55 is fixed with the bolt 57, and the wedge molding die 20 and punch guide 21 are attached to the upper part. Further, the wedge cutter male 18a has a sliding portion 58.
It is arranged so that it can slide independently within the cassette stand 55 while maintaining the relationship with the male wedge cutter 25.
The stand 19a and the cassette stand 55 are positioned by a pin 59 and fixed by a rotary presser foot 60 and a bolt 61. The punch 24a is fixed to the punch shaft 22 with a screw 23, and the male wedge cutter 18a is fixed to a slide portion 58 and a pin 62.
is connected to the cutter slide 17a. A motor 63 rotates a threaded rod 64 through a gear, and slides a stopper 65 back and forth along a guide groove 66.

Reference numeral 67 denotes a wedge material feeding actuator that moves a slide block 68 having a feeding pawl 90 back and forth along a guide bar 69 to a position where it touches the stopper 65. When changing the amount of feed of this wedge material, it can be done automatically by determining the amount of rotation of the motor 63 and the forward and reverse directions. In addition, the index pawl 16a of the ratchet wheel 71, which is integrated with the wedge magazine 70 which has a number of wedge insertion grooves 70a on the outer periphery, does not become an obstacle when the tooling 45 is raised for replacement, as shown in FIG. The rotation of an eccentric cam 73 fixed to the end of the main shaft 72 is controlled by a cam follower 74.
gives swinging motion to the lever 75 using the pin 81 (FIG. 9) as a fulcrum. The swing gives vertical motion to the bar 76, causing the hook-shaped link 77 to rotate about the pin 78 as a fulcrum. As a result, the index claw 16a moves back and forth in the left-right direction along the guide 80 while being pressed by the leaf spring 79.
The ratchet wheel 71 is indexed and rotated tooth by tooth. Further, when the tooling index changes due to a change in the number of slot grooves, it is only necessary to move the fulcrum position of the swinging lever 75 by the pin 81 as shown in FIG. To explain the tool exchange operation and operating operation of the coil inserter with a tool stocker configured as above, the tooling holder 85 in FIG. Due to hard work, I pulled out the knock 88.

Next, the tool stocker 41 is moved so that the storage portion of the tooling 45 corresponds to the tooling 45. And the fourth
Due to the extension operation of the tooling turning actuator 8a shown in the figure, the tooling 45 is guided to an empty part of the tool stocker 41 and rides on the upper plate 42, for example, a tooling presser such as the tooling presser 85 in FIG. 8 (not shown). It can be stopped. In this state, the bolt 53 shown in FIG. 6 is slightly loosened to remove the movable presser foot 54, the tooling turning actuator 8a is moved back, and the hook 51 is removed from the shaft 50 at the bottom of the tooling 45. Next, move the tool stocker 41 and replace the tooling 45a, 4.
5b, 45c is set in the center with a positioning pin (not shown), the tooling turning actuator 8a is advanced again, the hook 51 is connected to the shaft 50 of the tooling 45c, for example, and the movable presser foot is fixed with the bolt 53. Tighten 54. To change the tool of the wedge maker 4a, as shown in FIG.
In order to replace the cassette base 55c with a cassette base 55c that matches the cassette base 55c, the screw 23, pin 62, rotary presser foot 60, and bolt 61 are removed and operated.

The amount of change in the wedge material feed length is electrically set, the motor 63 is rotated, and the position of the stopper 65 is automatically set. The indexing amount of the magazine 70 is determined by selecting the fulcrum position of the lever 75 shown in FIG. 9 using a pin 81. Next, in order to take out the tooling 45c that has been replaced from the tool stocker 41, the tooling holder on the upper plate 42 is removed, the tool turning actuator 8a is moved backward and lowered onto the main body upper plate 2a, and the knock 88 is inserted into the knock groove 86 of the tooling 45c. , position it, and press the upper part with the tooling presser foot 85. After all the tools have been replaced in the manner described above, the wedge maker 4a then starts operation.The wedge maker 4a rotates the output shaft 26 of the rotary actuator to drive the main shaft 72 from the drive gear 27 to the gear 29.
A command cam (not shown) attached to the end of the main shaft sends forward/backward commands to the wedge feed actuator 67 for each rotation of the main shaft, and therefore the slide block 68 is connected to the guide bar. 69, and at this time, the feed claw 90 moves the wedge material 8 by the force of the spring 91.
9, the wedge material 89 is fed into the wedge molding die 20 by a predetermined amount so that the slide block 68 hits the stopper 65.

At this time, the stop claw 92 slides on the wedge material 89 being fed against the spring 93, and when the slide block 68 retreats after feeding, the stop lever 92 presses down the surface of the wedge material 89 by the force of the spring 93. To do this, the feed pawl 90 slides on the surface of the wedge material 89 against the spring 91 and retreats. The fed wedge material 89 is rotated by the cam 94 and the outer protrusion 94a presses the tip cam follower 96 of the slide 17a with the force of the spring 95.
The cutter slide 17a is lowered to jump against the force, and cutting is performed between the male wedge cutter 18a mounted on the upper part and the female wedge cutter 25 fixed. Next, the cam follower 97 guided by the cam groove 94b is
The integrated punch shaft 22 is moved up and down by the rotation of the cam 94, and when it rises, the wedge material 89 is bent and formed by the punch 24a at the tip and the wedge forming metal 20 and inserted into the groove 70a of the magazine 70. hold it.

By repeating the process described above with continuous rotation of the main shaft 72, the required amount of molded wedges of a predetermined length can be inserted into the magazine 70, and by turning off the command to the feeding actuator 67, the unnecessary portion can be inserted into the magazine 70. performs an indexing operation, but the wedge is not cut or formed, and the operation can be stopped after one cycle.

Then, as shown in FIG. 4, a coil (not shown) is set on the tip tool part of the tooling 45, the stator core 10 is reset thereon, and the insertion actuator 7 is advanced by pressing the upper part with the stator core presser 11. If you let it, insert table 5
moves forward, and the coil and wedge are inserted into the stator core 10. As explained above, according to the present invention, the stator core 1
Tooling and wedge cutting and forming parts and indexing parts can be replaced in a short time without fine adjustment with simple operations when the inner diameter dimension or slot groove shape and number of throat grooves change widely, and the weight is also reduced. It is highly safe because no human power is used to exchange items, and there is no need for crane work.
In this way, the setup time for changing models can be greatly saved, so it is especially effective in improving work efficiency when changing the setup frequently for winding small rods of many models, such as with special rotating electric machines (motors). is remarkable.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional coil inserter, Figure 2 A,
b is a partial cross-sectional side view and a cross-sectional front view taken along line B-B showing the wedge maker part, FIG. 3 is a partial plan view of the arrow A section in FIG. 1, and FIG. 4 is a coil with a tool stocker of the present invention. A side view of the inserter, FIG. 5 is its front view, FIGS. A and b show the wedge maker part of the present invention, and the figure a is a side view partially cut away, the figure b is a cross-sectional front view taken along line bb, and Figure 8 is a section taken along arrow C in Figure 4. The front view, FIG. 9, shows a partial configuration diagram of the arrow D section in FIG. 8. In the figure, 4a is a wedge maker, 5a is an insertion table, 7 is an insertion actuator, 20 is a wedge forming metal, 18 and 25 are wedge cutters, 24 is a punch, 41 is a tool stocker, 45 is a tooling, and 65 is a stopper.

Claims (1)

[Scope of Claims] 1. A plurality of toolings for inserting coils and wedges into slots of the iron core, an actuator that drives each of these toolings and is detachably connected to each of the toolings, and adapted to the shape of the iron core. A coil inserter comprising a tool stocker that stores a plurality of tooling tools and is movable left and right with respect to the actuator. 2. Stores a plurality of toolings for inserting coils and wedges into slots of the iron core, an actuator that drives each of these toolings and is detachably connected to each of the toolings, and a plurality of toolings that match the shape of the iron core. and has a tool stocker movable left and right with respect to the actuator, a wedge cutter for forming a wedge, a wedge forming tool, and a forming punch,
a wedge maker that supplies wedges formed by these to the tooling, and the wedge maker is provided with means for adjusting the cutting length of the wedge material, which is the raw material of the wedge, by the wedge cutter. Coil inserter.