JPS58104A - Insulating band body for winding - Google Patents

Abstract

PURPOSE:To wind the insulating band for winding excellently an efficiently by impregnating thermocuring resin into a fiber reinforcing material and stacking and arranging fiber sheet materials on the both surfaces under a semi-rigid condition. CONSTITUTION:The cloth-shaped fiber sheet materials 3A, 3B, which consist of a fibriform material, such as a glass tape, polyester nonwoven cloth, etc., in which resin is not impregnated and which have excellent permeability, are stacked and disposed onto both surfaces of a resin impregnated fiber reinforced material 2 manufactured by impregnating a thermocuring resin liquid such as epoxy resin to the fiber reinforcing material, such as the glass tape, the polyester nonwoven cloth, etc. and brought to a B stage condition. The viscosity of the resin under the semi-rigid condition impregnated into the reinforcing material 2 is lowered through heating, and the resin is fluidized, permeates uniformly to the sheet materials 3A, 3B arranged to the both surfaces and reaches up to the surfaces of the sheet materials. Accordingly, the insulating band body for winding is wound on a material to be wound, the resin impregnated is heated and cured and the material to be wound and the insulating band body can be bonded integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides molded static induction electrical equipment windings and FR
This invention relates to an insulating band for winding that is used in the production of P bobbins or for various purposes such as binding bands.

For example, there is a glass fiber reinforced plastic (FRPJ) method for manufacturing a molded wire using an insulating band for winding, and there are two types of molding methods: a wet method and a dry method.Wet glass fiber reinforced plastic method In the winding process, the insulating band for winding, which is made by impregnating a fiber reinforcing material such as glass roving or glass tape with thermosetting LLI liquid, is coated with EGO inner and outer circumferences and in the axial direction while the LLI liquid is uncured. The wire is coated by winding the wire continuously around both sides of the cape, and then impregnated and cured by heating with a resin liquid to obtain a resin-coated molded wire.

In the Kuken type glass fiber reinforced plastic method, thermosetting resin*1 is used as the fiber reinforcement material in the winding process and the separate process.
After impregnating with [, this resin liquid is heated to a semi-cured state (
The insulating band for winding in a sticky or non-sticky state (B-stage) is written on the winding drum in advance. In the winding step, the winding wire is covered with the winding insulating band that is continuously wound around the inner and outer circumferences of the winding wire and on both end faces in the axial direction, and then the green hardened ll0111111 is heated and hardened. However, in the wet glass fiber reinforced plastic system, a resin-coated tow-curved winding is obtained.
Immediately before wrapping the insulating band around the wrapping material, the cough band is passed through a thermosetting *fat liquid to impregnate it with *9, so the person who is wrapping the band is careful not to worry about the resin adhering to it. The leather-wound insulating band had to be handled, and the worker's hands were covered with K11llllll liquid, resulting in very poor workability. Also, a winding IV impregnated with resin liquid! ! In the process of feeding the enteitai to the winding position, the resin liquid drips onto the floor, resulting in a large amount of resin being wasted and creating a poor working environment.

In addition, in the dry glass fiber reinforced plastic method, the resin liquid impregnated into the winding insulating band is semi-hardened and then wound onto a winding drum, so the winding insulating band has adhesive properties. *When winding up on a coloring drum, it was necessary to wind up a thin non-adhesive sheet material at the same time to prevent the wound insulating strips from adhering to each other. Therefore, when winding this sticky insulating band around an object to be wound, the non-adhesive sheet material should not interfere with the winding work of the insulating band for winding. Therefore, it is necessary to wind the wound insulating band while winding up the sheet material, which has the drawback of extremely poor workability.

The sheet material that was rolled up was a useless book, so there was a drawback that there was a lot of wasted material. In addition, when winding a crisp, non-adhesive insulating band for winding onto a winding drum, the above-mentioned non-adhesive sheet material is rolled so that the wound insulating band for winding does not adhere to each other. Although it is not necessary to use it, this crisp insulating band for winding is a little too hard (not flexible) to be used for winding, so it is difficult to wrap it tightly around the object to be wound. For example, it is difficult to fit into recesses between adjacent winding conductors. Furthermore, the surface of this insulating band for winding is smooth and rounded, and when the insulating band for winding is wound around an object, it slips and is difficult to wind, making the workability very poor and round.

An object of the present invention is to provide an insulating band for winding which can be made in advance and stored prior to the second round of winding by eliminating the above-mentioned drawbacks and performing the winding work very well. .

FIG. 1 is a sectional view showing a winding insulating band 1 of the present invention, and in the same figure, 2 indicates glass tape, glass roving (glass fibers arranged in parallel to form a band), polyester nonwoven fabric, This is a resin-impregnated fiber reinforcing material made by impregnating a Nomex nonwoven fabric (trade name) # fiber reinforcing material with a thermosetting resin liquid (e.g., epoxy resin) to bring it into a semi-cured state (B-Stage). The semi-cured resin in this resin-impregnated fiber reinforcement material is slightly sticky, and both sides of the resin-impregnated fiber reinforcement material 2 are covered with fibers such as glass tape, glass nonwoven fabric, polyester paper, polyester nonwoven fabric, etc. The cross-shaped fiber bundle materials 3A and 3B, which are not impregnated with resin and have good permeability, are arranged in a polymerized manner. These fiber sheet materials 3A and 5B are polymerized in a partially bonded state because the resin liquid impregnated into the fiber reinforcing material 2 and brought into a semi-cured state has a slight tackiness. When heated, the semi-cured resin impregnated into the fat-impregnated fiber reinforcement material (No. 11) decreases in viscosity and becomes fluid, allowing it to penetrate uniformly into the fiber sheet materials placed on both sides of the fiber reinforcement material. reach the surface. Therefore, if the insulating band for winding configured as described above is wound around the object to be wound, and then the impregnated resin is heated and cured, the object to be wound and the insulating band for winding are integrally formed. be combined.

Moreover, the resin liquid impregnated into the fiber reinforcing material is thermosetting and remains flexible until it is heated and hardened as a final treatment, so the above-mentioned insulating strip for winding has good flexibility. retains gender.

As described above, in the winding insulating band of the present invention, the fiber sheet material is such that the MSI liquid impregnated into the fiber reinforcement material is in a semi-hardened state, and both sides of the fiber reinforcement material are not impregnated with Si fat. 9th, the resin liquid is not exposed on the outer surface of the winding insulating band. Therefore, the resin liquid does not adhere to the hands of the winding operator, resulting in extremely good workability. In addition, since the resin impregnated into the winding insulating band is in a semi-hardened state, the resin liquid will not run off during the process of feeding the winding insulating band to the winding position, and the 11 fat will be removed. Not only does it not go to waste, it also prevents the work environment from deteriorating. i9 The insulating band for winding of the present invention is 1I
It is constructed by polymerizing a resin-impregnated fiber reinforcing material impregnated with ill liquid and fiber sheet materials not impregnated with resin, which are respectively disposed on both sides of this resin-impregnated fiber reinforcing material. When taking the insulating band onto a drum, it is sufficient to simply wind it up, eliminating the need for a non-adhesive sheet material. Therefore, the work of winding up the sheet material that was performed when winding the insulating band for winding around the object to be wound is no longer necessary, and the work of winding the insulating band for winding is eliminated, and there is no need to waste sheet material. It can be done extremely efficiently. Furthermore, since the insulating band for winding of the present invention has good flexibility, it can be tightly wound around the object to be wound, and it is possible to avoid the concave portions (for example, the windings that are in contact with each other). This allows it to fit well into the recesses between the conductors. Furthermore, the delicate sheet material constituting the winding insulating band of the present invention is cross-shaped and has an uneven surface. The insulating band for winding does not slip when it is wound around the insulating band with the same edge, and the winding work of the insulating band for winding becomes extremely easy.

FIG. 2 shows a schematic configuration of an apparatus used for manufacturing the winding insulating strip of the present invention.

In this device I, a fiber reinforcing material 7 is mounted on a drum Dt which is rotatably supported by a rotating shaft supported by a frame F1.
The fiber reinforcing material is supported by the guide opening and rotated at a constant speed by a drive source such as a motor (not shown). Behind this winding drum, a nine-fiber sheet material 3A is arranged around a drum DI rotatably supported by a rotating shaft supported by a frame FsK, and above the drum DI a frame (not shown) is arranged. A fiber sheet material 6B that is rotatably supported and wound around nine drums D4 is arranged, and these fiber sheet materials 6A and fiber sheet material 3
It is guided to the position of B guide roller R and take-up drum DI. Behind the drum DI, the guide roller & is attached to the lower part of a heating device H tank such as a heater, with a fiber reinforcing material placed between the resin-impregnated guide roller Rs and the guide roller R4. This resin impregnating tank is provided to receive the dripping resin liquid, in order to prevent some of the resin liquid from dripping down during the process of guiding the resin to #1 and #1, which will be described later.

When manufacturing the insulating band for winding of the present invention using the above-mentioned manufacturing apparatus, the fiber reinforcement material 2 is first positioned on the outer peripheral surface of the guide roller R, and then the fiber sheet is placed on the lower surface of the fiber reinforcement material 2. The fiber sheet material 6B is polymerized and placed on the upper surface of six people, and then the ends of the fiber reinforcement material 2, the fiber material 3A, and the fiber sheet material 6B are wound up on a drum Ih.
Position it on the outer circumferential surface of the board and attach it with adhesive tape, etc. In this case, a guide tape material for guiding the fiber reinforcement material up to the winding drum is attached to the end of the fiber reinforcement material with adhesive tape, etc. After positioning it on the outer peripheral surface of the guide roller R6, the fiber sheet material 6A is placed on the bottom surface of this guide tape material on the top surface ffl! 1.7-) The materials 6B are arranged in a polymerized manner, and the ends of the guide tape material, the fiber sheet material 6A, and the fiber sheet material 3B are positioned on the outer circumferential surface of the teraki-dori drum and stretched with adhesive tape or the like. It's easy to put it on. Thereafter, a liquid thermosetting resin mixed with a solvent such as hexetone, toluene, methyl ethyl ketone, etc. is injected into the Sitgir impregnation tank. In this state, when the unwinding drum DI is rotated in a certain direction (in the direction of the arrow in Figure 2), the drum D1+ Ds l
D4 and the guide rows jRt to R6 are rotated and pulled out from the drum mount to the guide port -? Fiber reinforcement material 2 passed through R1
v is immersed in the resin impregnation tank by the guide roller R3, thereby impregnating the fiber reinforcing material with the resin liquid. The nine-fiber reinforcing material impregnated with the resin liquid is then guided into the heating store by the guide roller R1 and heated, and after reaching the guide roller R4, it is turned around and guided again into the heating store and heated again. As a result, the solvent mixed in the resin liquid evaporates, the curing reaction of the resin liquid progresses, and the resin liquid impregnated into the fiber reinforcing material becomes a semi-cured state 111 (B-stage) and becomes a resin-impregnated fiber reinforcement material. 2 is obtained. Thereafter, this resin-impregnated fiber reinforcing material is guided above the blower by the guide roller R1 and cooled, thereby increasing the resin viscosity. The cooled resin-impregnated fiber reinforcement material 2 reaches the guide roller R, and the six fiber sheet materials pulled out from the drum Ds are placed on the bottom side of the resin-impregnated fiber reinforcement material, and the six fiber sheets pulled out from the drum D4 are placed on the top side of the resin-impregnated fiber reinforcement material. The drawn fiber sheet materials 6B are stacked on top of each other to complete the winding insulating band 1. This winding insulating strip is then wound one after another onto a winding drum. In addition, by the above-mentioned superposition, the fiber sheet material is partially adhered to the resin-impregnated fiber reinforcement material by the adhesive portion.

As described above, according to the winding insulating band of the present invention, the resin liquid impregnated into the fiber reinforcing material is in a semi-hardened state that maintains adhesiveness and flexibility, and the fiber reinforcing material Highly permeable fiber sheet material that is not impregnated with resin is arranged on both sides of the insulating band for winding, and the resin is not exposed on the outer surface of the insulating band for winding. During the work of winding the object, the resin liquid does not adhere to the hands of the winding worker. It can be mass-produced in advance by winding up the nine-rolling Zetren Teitai on a winding drum.

Even when the winding insulating strip is wound in this way, the winding insulating strips do not adhere to each other, so there is no need for a non-adhesive sheet material, and the winding insulating strip can be attached to the object to be wound. The work of winding up the sheet material, which was performed during the winding process, is no longer necessary, and the work of winding the insulating band for winding can be carried out extremely efficiently.

In addition, since the resin liquid impregnated into the fiber reinforcing material is in a semi-hardened state, the resin will not drip onto the floor during the process of feeding the insulating band for winding to the winding position, reducing wasted resin. This has the advantage of not only eliminating the problem, but also improving the working environment. Furthermore, since the insulating band for winding of the present invention maintains sufficient flexibility, it can be wound closely around an object to be wound, and it can be wound tightly around a wound object (for example, between adjacent winding conductors). It can be made to fit well in the recesses of Furthermore, since the fiber sheet material constituting the insulating band for winding of the present invention has a rough surface, when the insulating band for winding is wound around an object, the winding is difficult. There is also the advantage that the insulating strip does not slip and the workability of the winding work is extremely good.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the winding insulating strip of the present invention, and FIG. 2 is a schematic diagram showing an example of the apparatus used for manufacturing the 41F# insulating strip of the present invention. DESCRIPTION OF SYMBOLS 1... Insulating band for winding, 2... Resin-impregnated fiber reinforcing material, 3A, 3B... Fiber sheet material. Procedural amendment (voluntary) 1981 8L14 Nippon Toku J! F Agency Chief Island 1) Haruki-dono 1, Incident Indication Patent Application No. 1986-98605 2, Title of Invention 1026) Insulating band for winding 1026) Osaka Transformer Co., Ltd. 4th Director Director Address: 105 Higashi S, C Miyako Ward Shinbashi 41'1
No. 131, No. 6, - Bunzan Building, 6th floor, 5th floor, Detailed description of the invention column of the specification subject to amendment and Figure 2 of the drawing. 6. @Correct Content ■ The statement of account will be corrected as follows. (1) On page 5, lines 9 to 10, the text is corrected to ``in a semi-cured state impregnated with fiber reinforcing material 2''. (2) Correct "fiber reinforcement material" in line 6 of page 6 to "resin-impregnated fiber reinforcement material." (3) From page 9, line 7 to page 10, line 3, "First of all, the fiber reinforcement material... is good." is corrected as follows. [First, the fiber reinforcing material 7 wound around the drum D1 is pulled out and the guide roller R+, the guide roller Rm which is not yet immersed in the resin liquid, and the guide rollers Rs + R4 and R1 are removed.
The fiber sheet material 6A and the fiber sheet material 6B wound around the drum D3 and the drum D4 are respectively pulled out and the fiber sheet is placed on the lower surface of the fiber reinforcing material 2'. The fiber sheet material 6B is polymerized and placed on the upper surface of the material 6A, and then these fiber reinforcing materials 2', the fiber sheet material 6A, and the fiber sheet material 6
The ends of B are aligned and positioned on the outer circumferential surface of the wound citrus D1, and fixed with adhesive tape or the like. In this case, before pulling out the fiber reinforcing material 2' wound around the drum D+ and guiding it to the guide roller R+, each of the fiber reinforcing materials 7 is guided to the end of the fiber reinforcing material 27 that has been taken out at 51. A guide tape material for guiding the roller to the position of the winding drum Ds is pasted with adhesive tape or the like, and the guide tape material is passed through the guide rollers R+, R1lRs, R4, and R1 to the outer periphery of the guide roller Ra. The fiber sheet material 6A is positioned on the surface and wound around the drum D3 and the drum D4.
and fiber sheet material "3Bt" are respectively drawn out, six fiber sheet materials are superimposed on the lower surface of the guide tape material located on the outer peripheral surface of the guide roller R6, and fiber sheet material 3B is superimposed on the upper surface, and these guide tapes are The ends of the fiber sheet material 3A and the fiber sheet material 3B may be aligned, positioned on the outer peripheral surface of the winding drum DI, and fixed by pasting with adhesive tape or the like.'' (4) Page 12 Lines 11-12 “Working environment...
・There is. ” should be corrected to ``It has the advantage of preventing deterioration of the working environment.'' ■Correct Figure 2 as shown in the attached sheet. that's all

Claims (1)

[Claims] A thermosetting resin is impregnated into a fiber reinforcing material to make the resin semi-cured! An insulating band for winding comprising an lr-impregnated fiber reinforcing material and fiber sheet materials superimposed on both sides of the resin-impregnated 111M reinforcing material.