JPS59133866A - V-pulley of resins - Google Patents

Abstract

PURPOSE:To enhance radiating performance of a pulley as well as suppress the cost for manufacture of pulley with accurate groove dimensions, by forming the outside surface course of pulley from a resin mixed with short metal fibers in 10-50wt%. CONSTITUTION:A sheet-shaped composite resin 7a formed from polyphenerene sulphand resin or polyethylene thereftalete resin mixed evenly with glass fibers in 10-40wt% is heated to a temperature over approx. 200 deg.C by a heatig device 9 to obtain molten state of the surface course of this resin material, and thereto are applied short metal fibers 4e of 3mm. long or below and in a diameter within a tank 11 having heater 11a as 30-60mu. The fibers shall be mixed in the surface course of the pulley in a proportion of 10-50wt% and in the surface of sheet-shaped portion approx. in 0.1-1.0g/cm<2>, and it is rounded with the fibers surface part of the sheet 7c facing outward into a cylinder 7d. Then this half-molten resin 7e is processed by a press using dies 12, 13. Thus a poly V- pulley 1 with embedded metal fibers is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a poly V-boo made of resin. More specifically, the present invention relates to a polyurethane pulley (hereinafter referred to simply as a pulley) made of resin for weight reduction and used to drive various auxiliary machines of an automobile engine.

Conventional resin pulleys have the problem of poor thermal conductivity, so in order to increase heat dissipation, thin iron & ? Is it covered or not, like this tr
A pulley with a thin iron plate fixed to a resin part (hereinafter referred to as a steel plate fixed boolean) has a complicated fixing process between the thin iron plate (outer layer) η- and the resin part, and the dimensional accuracy of the groove part is not good, and Due to the difference in thermal expansion coefficient between the steel plate and the thin iron plate, it had the disadvantage that it was prone to breakage after long-term use.

In other words, referring to FIG. 4, the steel plate fixing boot is explained. The 1" is made of resin.
'' is a thin iron plate covered on the outer periphery, which is integrally molded by a step of resin molding. When the engine is running, the temperature rises to about 120 degrees Celsius, and the temperature rises to about 120 degrees Celsius, and there is also heat from friction with the poly V belt (the temperature of the iron plate sticking to it also rises by m2), and the difference in the coefficient of expansion between the resin and the thin steel plate increases. This has disadvantages in that the shafted portion 4' of the resin and thin iron plate tends to loosen and is easily damaged after long-term use.

] Published by, Akira, (Previously, in order to improve the above-mentioned drawbacks, short metal fibers (hereinafter simply referred to as metal edges) were mixed in the outer periphery of the pulley made of resin in an amount of 1.0 to 50%. The purpose of the present invention is to provide a low-cost boob with improved heat dissipation and accurate dimensional accuracy of the groove portion.

t4IJ Chi'f&ilH'IQ:, High B polyphenylene sulfan"'lJ finger (PPS) or composite resin uniformly mixed with glass fiber kelo~1.0%vtL in polyethylene terephthalate resin (PET) After melting the PPS with PET using heating (hot air or dark infrared rays),
A suitable amount of gold wire with a wire diameter of 3d to 60μ and a length of 8 or less, consisting of 3D to 60μ, is uniformly mixed on the surface of the sheet so that 10 to 50% wt is mixed on the surface of the boob.Then, the sheet is coated with gold wire or the outside. After rolling it into a circular shape and inserting it into the Narita mold of the boob, the bracelet is molded. In addition, as another method, finely divided sheets may be inserted into the female die of the mold to form the shape of the groove and flange of the pulley, and press with increased gusset radius. By molding, the outer peripheral surface is formed into a shape with a gold edge of Al mixed into it.

A metal rim made of AI is integrally mixed with resin on the outer circumferential surface and flange side surface of the boot 1 lotus molded by the above method, and has the following characteristics.

(1) Since the metal edge is mixed into the outer peripheral surface of the boob where frictional heat is generated, it has excellent heat dissipation, and is about 20 times more heat dissipating than a boob made of simple resin. (2) Outer circumference The gold (1) or resin of the KAI in the front and i parts is mixed together, and the loosening and damage of the thin iron plate facing the outer periphery, such as the iron plate with the same name, is caused by the metal edge of the AI (t(8)). Since it is mixed into the surface part of the boob and molded at one time by press molding, the dimensional accuracy of the groove part can be accurately achieved, and the manufacturing process can be simplified, making it possible to manufacture a boob at a low cost. Examples will be specifically explained below with reference to FIGS. 1 to 3.

■ is an A1 gold fiber-containing ripley that is an embodiment of the present invention, and is a 2G
; In addition to the PPS and PET, polyetheretherkene (PEEK) was added to the back of the tree, and +j polyether sulfon (PES) was added to the back of the tree; 〜4+0%〜 was uniformly mixed with the composite resin, and there was a groove 8a on the outer periphery of the 4.a, 4b aluminum gold plate. ~60μ, 1 for lengths of 3 or less
- 5 holes mixed in the outer peripheral surface of f3a, 6b, . . .
Boo'JI7) 9J method with gold niX is described.
PET, PET (or PES or nylon) mixed with 10-10% of crow fiber (7
The composite front layer 8 is conveyed 4 and placed, and 9 is heated with a heating lamp ♂ to about 200° C. or higher as shown in the sheet-shaped resin i10 to melt the surface part of the resin material 7a. Metal rims 4, 6f in the tank 11 with the heater 11aTh are mixed into the surface of the metal rims 4, 6f, as shown in 4f.
J is mixed with about 0.1 ~],, Og/Cm2-, and rounded into a cylindrical shape 7 with the gold fiber surface blood part of C) 70 on the outside.
d is formed, and then the cylindrical gold fiber-containing resin 7e is inserted into the lower plastic 13 using the press molds 12 and 18 made by splitting. This corresponds to the groove of the lower Luri 12-piece poly V-boo. Accurate uneven grooves 13b are provided, and the semi-molten f1 and shape of the tree fJ'Q 7 e 'tl are guided by the bottom guide bin -3c. We can manufacture press-molded gold fiber-filled pulleys. Note 12a
And 1.3 a. Everyone is outraged by the heat of G Sukin J Lily.

For those of you who are R"JK? I made the 1-rike (it has about 20 times more heat dissipation than the one made of M11, and the accuracy of the groove of the poly V-boo is also the same as that of the iron plate. The thin iron plate used for the width boob is approximately 0.8 shoulder/II or more, and the cylinder does not rotate. , K Jt In contrast, the actual example of the present invention can easily and accurately achieve dimensional accuracy by press-molding at one time using a resin mold.As for the resin used in this example, By using thermosetting resins such as unsaturated polyester resin and epoxy resin, the thermosetting resin containing fine glass and the same thermosetting resin containing short metal fibers are made into two layers and press-molded to create Boo IJ. It is also possible to manufacture f.

[Brief explanation of drawings]

Figure 1 is an example of the actual amount I, with one part omitted.
The figure is a plan view with one part omitted, and Figure 3 is for explaining the manufacturing process of this example. (D) is a process diagram of pressing the mixed resin sheet into a cylindrical shape, (E) is the waist showing the completion of the bobbin, and the fourth and fourth figures are the decoys on the conventional side [Fig. It is. 1. ・ ・Value 1 finger-made poly V)-li with gold short fiber. 4, n, 4. b...Metal short fiber, 7a, 7b
...Composite resin sheet, 9...Heating device l[+1
2, 13...Press pasting special γj° Applicant Reio Nakai, Representative of Aisin Seiki Co., Ltd.

Claims (1)

[Claims] Polyphenylene sulfide resin, polyethylene terephthalate resin, polyether ether tent resin, polyether sulfate resin, polyether sulfide resin, polyether ether tent resin, polyether sulfide resin, polyether ether tent resin,
Or nylon wood or glass fiber
40%+vt was inserted into the left shell synthetic resin sheet form, and the surface tf++ part of the sheet form was made into a molten state. Saga 3
Press the surface of the sheet so that it is on the outside.
After one person press-molding the poly V-build IJi, the poly V-bubbles have 10 to 50% of split gold short fibers mixed into the concave part of the outer peripheral surface. ■Pulley.