JPS5899245A - Manufacture of resin formed commutator - Google Patents

Abstract

PURPOSE:To manufacture a rigid resin formed commutator avoiding the phenomenon such as high bar and the like by a method wherein a guide bar and a cylinder are integrated and the guide bare directly fixed to forming plate by nut etc. is held by both ends of commutator cylinder surface. CONSTITUTION:A guide bar 18 is fixed to one end of a cylinder 20 for injecting resin to locate a commutator spider 5 and fit it to the guide bar 18 and then the spider 5 is inserted into a commutator cylinder 1 to fit the spider 5 to the center of a forming plate 16 using the guide bar 18 to be directly fixed to the plate 16 so that resin may not leak out of the commutator cylinder 1. Resin is injected into the space 21 in the cylinder 20 and compressed by means of a piston 22 in the A marked direction while being heated to fill the space between said ctlinder 1 and said spider 5 as well as the circular slots 4, 4' with the resin through the intermediary of the notches 19. Through these procedures, a rigid resin formed commutator may be manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a resin acid amount commutator using a simple molding tool.

1m is the upper half lIIWRIIIm showing the general structure of a resin acid ll11tIL child. #4' is a υ-shaped cross section formed at both ends of this rectifier w1, and the vessel is concentric with this commutator cylinder l, with a space between it and the inner periphery of the commutator cylinder l. commutator spider arranged, s,
e' is partially covered with binders 7 and γ' made of cylindrical materials at multiple locations on the circle, and the annular $ of τmk Takiko cylinder l is formed through these binders 7 and 7'.
4 A plurality of reinforcing rings made of iron are fitted into 4' respectively, and 8 is a groove that covers both end faces of the commutator cylinder 1 (the space between the commutator cylinder l and the commutator spime black and the IIR child cylinder). These commutator cylinders 1 are filled in lI-shaped cylinders 4 and 4'.
It is a thermosetting resin that connects the flow spider ink and the commutator cylinder l.Reinforcement y is fitted into the thick holes 4 and 4' of the commutator cylinder l.
yg6.6' is 11 flow cylinder as gl@electric machine rotates! This is to support the centrifugal force generated in the commutator, and is generally used for medium and large moths with a commutator outer diameter of approximately 50 wm or more.

The outer diameter of 101 children is io! In the case of a small size of 1111 or less, the resin alone can sufficiently support the centrifugal force generated in the commutator cylinder 1, so even from the last manufacturing stage, such reinforcement Not used.

Resin molded commutators generally have this structure,
A rise part 9 into which a trochanter wire is normally inserted *S* is formed at the rear end part. Conventionally, in the manufacture of resin acid part commutators such as ζ, a thorough The method shown below was adopted. That is, a resin welding jig is attached to the outer part of the amperoid cylinder l, which is constructed by alternately arranging a predetermined number of commutator pieces 1i10 with unfinished sliding contact with the brush and mica 3 between the pieces. Insert the tightening cylinder 11 that also serves as this tightening cylinder! By suitable means (not shown) attached to l, this commutator cylinder l is set to lR1! The commutator cylinder 1 is tightened by the tightening cylinder 11 in this way, and then the commutator cylinder 1 is tightened by the tightening cylinder 11, and after applying a predetermined seasoning to the mica 1, the commutator cylinder 1 is machined to form a U-shape on both m sides. llftIm's 11
At the same time, a plurality of reinforcing rings . . . s' are respectively fitted into these tag-shaped containers 4 and 4' through pine fittings (not shown), and then tightened into cylinders. Hand II (not shown) appropriately configured in relation to 11
The commutator spider (not shown) is
1 from the outer station side of this commutator spy
Fill the gap between the commutator spider and the 11-stream cylinder 1 and the dense diameter 4.4'#call (II not shown) of the commutator cylinder 1 so as to cover both end faces of the 1-stream circle I11. By thermosetting the resin, these commutator spiders and the commutator cylinder 1 are joined together, and then the I11 waterfall, in which the commutator A and the 11tIL element are assembled together, is tightened. It was taken out from the attached cylinder 11 and machined to form a line S- by machining an 11 m scale 10 with a sashiko on the commutator cylinder l. In general, the manufacture of commutators<! In order to make the 11i and 11 particles strong enough to prevent phenomena such as hyper-reactions from occurring, a so-called seasoning process is performed by tightening and heating the cylindrical scraps and drying the resin component that is mixed with the mica for each piece. By repeating several times.

Sufficient direct pressure is applied between the commutator pieces and the mica between the pieces, but in the conventional method of forging resin acid m** pieces, as mentioned above, the commutator spider and After the commutator cylinder l is integrally connected, the live s9 is formed by machining the brush 111i10 on the commutator cylinder 1, so after forming the rise part 9, .

Compared to the state after the completion of V-Z1, the contact on both sides between Il Takiko Katatomi and Katama Mica 3 has become significantly smaller, and even though V-Z is sufficiently applied, ThTh figure,
There is a lack of positive polarity between the commutator plate thickness and the mica plate 3, and as a result, a hyper phenomenon occurs partially in the commutator plate 2 that constitutes the commutator cylinder l during the rotation of the converter. However, this has inevitably resulted in drawbacks such as am defects and brush breakage accidents. This tendency is due to the live i19 formed at the rear end of the resin acid ms stream.
The higher the height, the more noticeable this becomes. In addition, in the conventional manufacturing method of a resin acid part commutator, as shown in the manual, the tightening cylinder 11 is fitted onto the outer periphery of the commutator cylinder 1 whose sliding surface 1G with the brush remains unprocessed, and the tightening cylinder 11 is By cylinder 11!
With the 11111 child circle 1 tightened, resin is filled from the outer side of the 11111 child circle 1.
Since 11I11 will also serve as the envelope of the resin acid part jig, not only will the tree formation jig be large, but the resin lamination f#IA will be complicated in order to properly fill the resin. As a result, there was a drawback that the manufacturing last of resin acid m* flowers was a little different. We have developed a new method for counterfeiting a resin molded commutator that uses a small, simple, and easy-to-work resin jig to obtain a strong resin molded commutator that does not cause phenomena such as hyperlinks. Hereinafter, the present invention will be described in detail based on Sections 31!iii and 411.

Chapter sI! ll is a vertical cross-sectional view of the device used in the present invention. The main HFIK has commutator pieces 2 and mica 3 between the pieces.
11 commutator cylindrical five is constructed by processing the commutator in advance with a cutter or the like to a point close to 1i10 in sliding contact with the brush, and alternately arranging a predetermined number of commutator pieces on which live m bleeds are formed and commutator pieces between the commutators. A cylindrical ring II having a slope device between the two and the same slope position type as described above on the outside, and after considering the sector 14 divided into a plurality of pieces, one cylindrical ring 11 and sector 14 are added. Tighten the rectified 1,000 cylinder l by pressing and apply the specified seams to Katama II3, and in this - open state, set the predetermined position after the 4.4' and summer eve 11110. Processed to machine number y and reinforced.
Insert the binder holes 4 and 4' into the binder grooves 4 and 4', and
' is affirmed by the ink 1, which has a positioning center @lB of the cylinder 1 that fits with the shape of this type of part.
6 and 11 Takiko cylinder l anti-raizu Confucian Confucian 11117 is closely attached.

11 1982-99245 (3) On the other hand, a β-id rod l- is fixed to one end of the resin injection cylinder 20 in this part, and an IIR child spime S is attached to the guide rod 18.
Insert this commutator spider S into the IE @ child cylinder i, and tighten the commutator slot with the guide rod 18. , No. 41!1.19 is a notch provided at an appropriate interval on the upper part of the guide rod 18 in order to inject resin into the rectifying cylinder 1.
It shows lill.

Inject the resin into the space 21 in Syria/1G, pressurize the resin in the direction of the arrow while heating it, and press the resin to inject it from the notch 11111 into the hole 1 and 1.
It flows and fills the space between the child spime S and the S portion of the annular groove 4.4'. In this pressurized state, curing of the resin II is completed.

This ilk@ is the guide rod 18 and cylinder g as described above.
A simple resin acid IIM that can be attached to both end surfaces of the τmg rod 1 by directly molding the ID rod 18 [16 with a nut L etc.]
Depending on the ingredients, it is possible to obtain a resin-made gourd pot.

As described above, since the present invention has a simple structure, it is possible to assemble and disassemble the crystal in a short time.

[Brief explanation of the drawing]

The first cabinet is the resin acid department 11#I! Child drawing ■, Fukaku is conventionally l
By the resin formation method of ゛, the schematic vertical cross-section of the tree is shown in Fig. 1g1
Shows s-it Yasokaku. l... Rectification 1,000 yen @ o To... Alignment piece, To... Mica between pieces, '4-, 4'...
・ll-shaped groove, t...11 children/(ida, @, '6'
...Reinforcement Y-glue, 7.7'...Binder, 8.11...Resin, 9...Made part, 10... ...Printing with a brush I'11.11・
...Tightening cylinder, 1t...Cylindrical cylinder, 14
・・・・・・Sector, 1t...111[,11・
...Guide rod, IUI injection notch, 1G
... pgy〆, Yukitomi ... pist y, 2
3...Melt! 4...Natsuto. Cold I) Moon Z diagram

Claims (2)

[Claims] (1) Tighten the child cylinder, which is made by alternately assembling the required number of Il waterfall pieces and piece mica into a cylindrical shape, from its outer periphery using the tightening tool S^, and remove the tightening jig. *S* Closely attach the molded plate for positioning to one side of the child circle 11!
In a resin acid imm flower where resin is press-fitted from the other side, a guide rod for positioning the commutator spy is attached to one end of the V-shape for press-fitting the resin, and a resin injection rod is attached to the scissor guide rod. By setting up multiple cutting competitions as an entrance, Zeng W.B.
After fitting the inner diameter of the commutator spider to the made rod, the end of the cylinder is brought into close contact with the other end of the Ill #1 element, and the guide rod is screwed directly to the molded plate. A method for manufacturing a resin-molded commutator in which a commutator cylinder is held and a tree layer is press-fitted by a piston y in a V9/. (2) A method for manufacturing a resin laminated commutator according to claim (1), which uses a commutator cylinder in which a sliding part is processed to form a live part before the resin is molded.