TWI404874B - V-ribbed power transmission belt and method for manufacturing the same - Google Patents

Abstract

This invention discloses a V-ribbed power transmission belt and a method for manufacturing the same. The V-ribbed power transmission belt comprises a base and a polarity of V-ribs. The base is an annular belt body and at least one core yarn which made from twisting at least one first fiber is disposed into the base. The V-ribs are disposed on the inner side of the base. The base and the V-ribs are formed by Ethylene-Propylene rubber (EPR) wherein a predetermined parts of the second fiber per hundred parts of rubber are disposed.When the V-ribbed power transmission belt surrounds at least one pulley, the V-ribs lean against the grooves of the pulley. When at least one pulley is rotating, the V-ribbed power transmission belt makes the pulleys rotate.

Description

Multi-slot drive belt and manufacturing method thereof

The present invention relates to a transmission belt, and more particularly to a multi-slot transmission belt for oil-electric hybrid engine transmission.

With the awareness of energy conservation and environmental protection, the hybrid electric vehicle has become the mainstream trend in the automotive market. Hybrid vehicles produce high energy efficiency by providing different powers of internal combustion engine and battery energy. Compared with pure internal combustion engine systems, hybrid vehicles only need one-half energy supply to achieve their power efficiency. Environmental pollution is also reduced by half, and it is definitely a very economical energy technology.

In the development of the hybrid electric fuel engine system, the new generation system is an electric electric drive system. The most important principle of energy saving is to automatically stop the oil supply when the car is at rest (such as waiting for traffic lights, roadside parking), let the engine Turn off the fire, and quickly start the fuel supply and ignition system at start-up, and drive the crankshaft to complete the near-quiet start-up action.

The key principle of the electronic electric drive system is to directly drive the engine ignition operation by applying a high-performance engine to drive the belt, thereby achieving a near-silent quick start effect.

In order to achieve the above effects, the engine drive belt must have excellent performance, including low deformation, high load, smooth running at high speed, high torque output, low noise, high heat resistance, high wear resistance, high fatigue resistance, etc. Complete power/fuel power switching.

Most of the multi-slot drive belts currently available on the market for automobile engines make With neoprene (CR glue), the transmission belt characteristics required for the new oil-electric hybrid engine must be able to withstand heat for 120 ° C for a long time, and can withstand heat of 170 ° C for a moment, maintaining the transmission power at 15 hp or more. These work requirements are not traditional manufacturing transmission belts. The neoprene can be achieved, so it is bound to improve the material and process.

In terms of material, neoprene has low heat resistance, only about 100 ° C, and it contains chlorine, which is quite environmentally friendly in the process, and another rubber raw material hydrogenated nitrile rubber (HNBR) is also suitable for use in the automotive industry. However, it is expensive and not suitable for belt production. In order to meet the working requirements of the hybrid electric engine, and to meet the various considerations of industrial utilization, it is necessary to use rubber materials with lower cost but good physical properties.

In the choice of rubber raw materials, it is impossible to find rubber that meets the requirements. The example is Ethylene-Propylene rubber (EPR), which has lower cost and better heat resistance (above 150 °C). Part of the demand, but its wear resistance and tear resistance is lower than that of neoprene. In order to meet the working needs of the automobile engine, it is bound to break through the past changes in the process, in order to achieve the industrial needs and practical use. The transmission belt of the hybrid electric engine.

In view of the above-mentioned problems, an object of the present invention is to provide a multi-slot transmission belt and a manufacturing method thereof, so as to solve the problem that the physical properties of the rubber raw materials are insufficient to meet the conditions of the current engine, the environmental protection is insufficient, and the cost is not in line with the production requirements of the industry. .

In accordance with the purpose of the present invention, a multi-slot drive belt is provided that is sleeved over a plurality of drive wheels and includes a base and a plurality of wedge teeth. Base The annular strip body is formed of an Ethylene-Propylene rubber (EPR), at least one core wire is disposed in the base portion, and the core wire is formed by at least one first fiber strand. A plurality of wedge teeth are disposed on the inner surface of the annular belt of the base, formed of ethylene propylene rubber, and a second fiber of parts per hundred parts of rubber (phr) is disposed on the plurality of wedge teeth Inside. A plurality of wedge teeth are engaged on the grooves of each of the transmission wheels. When at least one of the transmission wheels rotates, the multi-slot transmission belt drives the transmission wheels to rotate.

Wherein, the second fiber corresponds to a plurality of wedge-shaped teeth of the ethylene propylene rubber, and the predetermined number of parts is 10 to 40 phr. And the base is further provided with a predetermined number of second fibers, and the second fiber has a predetermined fraction of the ethylene propylene rubber corresponding to the base of 10 to 40 phr.

In the multi-slot transmission belt of the present invention, the core wire and each of the second fibers are coated with at least one surfactant, and the outer layer of the core coated with the surfactant is further coated with at least one subsequent treatment liquid, so that the interface between the core wire and the ethylene propylene rubber is followed. Interfacial adhesion strength is 9 to 20 kgf. This subsequent treatment system includes resorcinol, formaldehyde, and latex (RFL).

Wherein, the first fiber and the second fiber comprise glass fiber, carbon fiber, poly-aramide, polyester fiber (PET) or nylon fiber (Nylon).

According to the object of the present invention, a multi-slot transmission belt manufacturing method is further provided, which comprises the steps of: twisting at least one first fiber into at least one core wire, and performing a first surface treatment on the core wire and a second fiber, The surface of the outer layer of the core wire and the second fiber is coated with at least one surfactant. Thereafter, the second surface processed core wire is subjected to a second surface processing to further coat the outer surface of the core wire with the subsequent treatment liquid. The ethylene propylene rubber and a predetermined number of parts (phr) of the second fibers are further kneaded to provide good dispersibility of the second fibers in the ethylene propylene rubber. Thereafter, the ethylene propylene rubber which has been kneaded and has the second fibers is calendered, and the second fibers are aligned in the ethylene propylene rubber and then discharged. Thereafter, the ethylene propylene rubber which has been calendered is molded, and the core wire is spirally wound around one of the ethylene propylene rubbers, and the formed ethylene propylene rubber is further vulcanized into an endless belt by a high pressure vulcanization method, thereby being vulcanized. The process tightly bonds the core wire and the second fiber to the ethylene propylene rubber. Finally, an annular strip of appropriate width and vulcanized is cut into an endless belt, and then the endless belt is ground by a high speed wedge type grinding machine, and the endless belt has a base and a plurality of wedge teeth. The plurality of wedge teeth are located on the inner surface of the annular band, and the core wire is sandwiched between the base and the wedge teeth, and the second fibers are mixed in the base and each wedge tooth.

In the multi-slot drive belt manufacturing method of the present invention, the interface strength of the core wire and the ethylene propylene rubber is 9 to 20 kgf by the second surface treatment processing step, and the subsequent treatment liquid system includes resorcin, Formaldehyde and latex (RFL).

Wherein, the first fiber is a high modulus low shrink fiber, which comprises a polyester fiber or an aromatic polyamide fiber; and the second fiber comprises a glass fiber, a carbon fiber, an aromatic polyamide fiber, a polyester fiber or a nylon fiber. And the second fiber is used in an amount of 10 to 40 phr corresponding to the ethylene propylene rubber, and the second fiber is uniformly dispersed in the ethylene propylene rubber by a kneader.

In the multi-groove driving belt manufacturing method of the present invention, the vulcanization time of the high pressure vulcanization method may be 25 to 60 minutes, the vulcanization pressure is 10 to 30 kgf/cm ² and the vulcanization temperature is 120 to 180 °C. The ethylene propylene rubber treated by the high pressure vulcanization method has a degree of crosslinking higher than or equal to 90%.

In view of the above, the multi-slot drive belt and method of manufacture of the present invention may have one or more of the following advantages:

(1) This multi-slot transmission belt is made of ethylene propylene rubber, which has good heat resistance and can withstand temperatures up to 120 °C for a long time, which is in line with the demand of hybrid electric engine.

(2) The multi-slot transmission belt is made of ethylene propylene rubber and blended with high-rigidity reinforcing short fibers (ie, second fibers) such as aromatic polyamide fibers in the rubber, and by reinforcing the short fibers. The first surface treatment process is provided with a surface treatment agent on the staple fiber to further improve the dispersibility of the reinforcing short fiber and the rubber during the mixing, and to make it have high directionality in the subsequent process, and improve the reinforcement. The interface strength between the short fibers and the rubber. When the rubber is vulcanized and shaped, the rigidity and load of the belt are increased by the high rigidity of the reinforcing short fibers, and the belt has a high interface strength due to the reinforcing short fibers and the rubber, so that the belt is not easy to be used. Reinforce the gap between the short fibers and the rubber and the point at which the peeling point causes damage and cracking.

(3) The multi-slot transmission belt is made of ethylene propylene rubber, and is made of high-mode low-shrinkage fiber material such as polyester fiber, aromatic polyamide fiber (ie, first fiber) as a core wire. The interface between the core wire and the rubber is high in strength and affinity, except that the belt has high strength and low strength. In addition to the extended features, the belt further has no hairiness when trimming and high-speed grinding.

Please refer to FIG. 1 , which is a schematic diagram of a multi-slot transmission belt of the present invention. In the figure, the multi-slot transmission belt 1 is sleeved on the transmission wheel 2. The multi-slot transmission belt 1 comprises a base portion 11 and a plurality of wedge-shaped teeth 12, and the transmission wheel 2 has a plurality of grooves 21 opposite to the wedge-shaped teeth 12, each wedge The teeth 12 are respectively engaged with the respective grooves 21. In the present embodiment, the transmission wheel 2 is represented by two transmission wheels 2 of different sizes, but not limited thereto.

Please refer to FIG. 2 to FIG. 4 , which are respectively a manufacturing flow chart, a partial sectional view 1 and a partial sectional view 2 of the multi-slot transmission belt of the present invention. The multi-slot drive belt 1 can be completed by the steps as shown in FIG. 2, wherein: step S10: first twisting at least one first fiber into at least one core wire; and step S20: performing a first wire on the core wire and a second fiber a surface treatment process, the core wire and the second fiber outer layer surface are coated with at least one surfactant; step S30: performing a second surface processing on the first surface processed core wire, so that the outer surface of the core wire is further coated with the subsequent treatment liquid Step S40: kneading the ethylene propylene rubber and the second fiber of parts per hundred parts of rubber (phr) to uniformly disperse the second fiber in the ethylene propylene rubber; step S50: calendering the mixed ethylene propylene The rubber is arranged such that the second fibers are arranged in a parallel direction in the direction of the sheet in the ethylene propylene rubber; and in step S60, the ethylene propylene rubber and the core wire which have been rolled out are formed into an endless belt, and the core is spirally wound around the core. In the endless belt; Step S70: vulcanizing the formed ethylene propylene rubber endless belt by a high pressure vulcanization method to tightly bond the core wire and the second fiber with the ethylene propylene rubber; and step S80: finally, cutting the vulcanized shaped annular belt into a suitable one An annular belt body of a width, and then the high-speed wedge-type grinding machine is used to grind the annular belt body of appropriate width, so that the annular belt body has a base portion and a plurality of wedge-shaped teeth, and the plurality of wedge-shaped teeth are located in the annular belt The inner edge surface is further sandwiched between the base and the plurality of wedge teeth, and the second fibers are mixed in the base and the wedge teeth.

In this embodiment, the first fiber is a high modulus low shrink fiber comprising polyester fiber or an aromatic polyamide fiber; and the second fiber comprises glass fiber, carbon fiber, aromatic polyamide fiber, polyester fiber or The nylon fiber is a high-rigidity fiber, and the length of the second fiber is preferably from 1 to 6 mm, wherein the second fiber corresponds to the ethylene propylene rubber in a predetermined fraction of 10 to 40 phr, but is not limited thereto.

In the present embodiment, the ethylene propylene rubber which is rolled out by the step S50 has a 10% elongational strength ratio of 4 or more in the warp and weft direction, but is not limited thereto. And the high pressure vulcanization method in the present embodiment has a vulcanization time of 25 to 60 minutes, a vulcanization pressure of 10 to 30 kgf/cm ² and a vulcanization temperature of 120 to 180 ° C, and the ethylene propylene rubber treated by the high pressure vulcanization method. Its degree of crosslinking is higher than or equal to 90%, but not limited to this.

In this embodiment, the step S60 is a molding step, and the ethylene propylene rubber used for molding is an ethylene propylene rubber which has been kneaded with the second fiber and has been over-extruded, but not limited thereto. Mixed with the second The fiber-knitted ethylene propylene rubber sheet is molded together, and the step S70 vulcanization and the step S80 grinding are continued, so that the second fiber is disposed only in the plurality of wedge teeth, and the base portion does not include the second fiber.

Through the steps S10 to S80, the multi-groove transmission belt 1 having the cross-section as shown in Figs. 3 and 4 can be formed. A plurality of core wires 13 are disposed in the base portion 11 of the multi-slot transmission belt 1, and the base portion 11 and the wedge-shaped teeth 12 are uniformly doped with the directional second fibers 14. In the present embodiment, the number of the wedge teeth 12 is six, and the number of the core wires 13 is sixteen, but not limited thereto.

Please refer to FIG. 5 and FIG. 6 , which are schematic diagrams of the core wire and the surface processing of the core wire of the multi-slot transmission belt of the present invention. In Fig. 5, the unmachined core wire 130 is first twisted into a first fiber yarn 1302 by the first fiber 1301, and twisted by the first fiber yarn 1302 to form a non-surface-finished core wire 130. In the present embodiment, the first fiber 1301 is represented by a high-mode low-shrinkage fiber, such as a polyester fiber, an aromatic polyamide fiber, or the like, but is not limited thereto; and the surface-free core 130 is composed of three The first fiber yarn 1302 is twisted, but is not limited thereto. The number of the first fibers 1301 and the first fiber yarns 1302 may depend on the physical properties of the desired core wires 13.

In Fig. 6, the unfinished core wire 130 is subjected to a first surface treatment 41 and a second surface treatment 42. In the present embodiment, the first surface treatment 41 and the second surface treatment 42 are both shown in an infiltrated manner. But it is not limited to this. When the surface-finished core wire 130 is not subjected to the first surface treatment process 41, the surfactant 31 is coated and infiltrated into the untreated surface-treated core wire 130 by the reservoir of the surfactant 31 to form the surfactant core wire 131. The surfactant core wire 131 enters the second surface treatment processing 42 and further applies the subsequent treatment liquid on the surfactant core wire 131. The core wire 13 is formed by 32. In the present embodiment, the treatment liquid 32 is followed by resorcinol-formaldehyde latex (RFL), but is not limited thereto.

Please refer to FIG. 7 , which is a schematic diagram of the kneading of the multi-slot transmission belt of the present invention. In the figure, the kneading machine 50 is provided with a feed port 51, a kneading chamber 521 surrounded by a cavity wall 52, and two rotors 53 rotating at different speeds and directions, and the ethylene propylene rubber 110 and the second fiber 14 are fed from the feed port. 51 is put into the kneading machine 50, and the ethylene propylene rubber 110 and the second fiber 14 are introduced into the kneading chamber 521, and the second fiber 14 and the ethylene propylene rubber 110 are uniformly mixed by the shearing action of the rotor 53. In the present embodiment, the kneading machine 50 is represented by a closed kneader.

Please refer to FIG. 8 , which is a schematic diagram of a rolled sheet of the multi-slot drive belt manufacturing method of the present invention. The ethylene propylene rubber 110 having the second fibers 14 after kneading is calendered and flattened by a plurality of sets of rollers 61 of a calender (not shown), and the second fibers 14 in the discharged ethylene propylene rubber 110 are discharged. The ethylene propylene rubber 110 is arranged in parallel to the sheet discharge direction. In the present embodiment, the 10% tensile strength ratio of the 11 mm film of the ethylene propylene rubber 110 after calendering should be greater than or equal to 4, but not limited thereto.

Further, the extruded ethylene propylene rubber 110 film and the core wire 13 are formed into an endless belt (as shown in FIG. 9) in a molding machine (not shown), wherein the core 13 is spirally wrapped around the entire core. Annular belt. Thereafter, the formed endless belt is subjected to high pressure vulcanization (not shown), and the ethylene propylene rubber raw material 110 and the core 13 are combined into a composite material during the vulcanization process.

After further cutting the annular belt into an annular belt body, the annular belt body is wedged by a high-speed wedge-type grinding machine (not shown). To form a multi-groove drive belt 1 having a cross-section as shown in FIG. In the present embodiment, the core wire 13 is processed through the first surface treatment 41 to first contain the surfactant 31, and then subjected to the second surface treatment 42 to allow the subsequent treatment liquid 32 to be coated on the core wire by the surfactant 31. The surface of 13 can be further penetrated into the core wire 13. In the present embodiment, the core wire 13 has an interface strength with the ethylene propylene rubber 110 of 9 to 20 kgf by the action of resorcinol-formaldehyde latex, but is not limited thereto.

Since the processing liquid 32 is not only coated on the surface of the core wire 13 but also penetrates into the inside of the core wire 13, the affinity and the degree of bonding of the first fiber 1301 or the first fiber yarn 1302 in the core wire 13 are improved, so that the cutting and grinding are performed. During the wedge process, the core wire is prevented from being opened and fluffed due to cutting and grinding.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧Multi-slot drive belt

11‧‧‧ base

110‧‧‧ethylene propylene rubber

12‧‧‧ wedge teeth

13‧‧‧core

130‧‧‧Unprocessed core wire

1301‧‧‧First fiber

1302‧‧‧First fiber yarn

131‧‧‧with surfactant core

14‧‧‧second fiber

2‧‧‧Drive wheel

21‧‧‧ tooth groove

31‧‧‧Interactive surfactant

32‧‧‧Next treatment liquid

41‧‧‧First surface treatment

42‧‧‧Second surface treatment

50‧‧‧Machine

51‧‧‧ Feed inlet

52‧‧‧ cavity wall

521‧‧‧Mixed room

53‧‧‧Rotor

61‧‧‧Roller

S10, S20, S30, S40, S50, S60, S70, S80‧‧ steps

1 is a schematic view of a multi-slot transmission belt of the present invention; FIG. 2 is a manufacturing flow chart of the multi-slot transmission belt of the present invention; and FIG. 3 is a partial cross-sectional view 1 of the multi-slot transmission belt of the present invention; Figure 4 is a partial cross-sectional view of the multi-slot drive belt of the present invention; Figure 5 is a schematic view of the core of the multi-slot drive belt manufacturing method of the present invention; Schematic diagram of core wire surface processing of the groove drive belt manufacturing method; FIG. 7 is a schematic view of the kneading of the multi-slot drive belt manufacturing method of the present invention; Figure 8 is a schematic view of a rolled strip of a multi-slot drive belt manufacturing method of the present invention; and Figure 9 is a schematic view of an endless belt of the multi-slot drive belt manufacturing method of the present invention.

S10, S20, S30, S40, S50, S60, S70, S80‧‧ steps

Claims (10)

The utility model relates to a multi-slot transmission belt, which is suitable for being sleeved on a plurality of transmission wheels, comprising: a base portion which is an annular belt body formed by an ethylene propylene rubber; and a plurality of wedge teeth arranged at the base portion The inner surface of the endless belt is formed of the ethylene propylene rubber, and at least one core wire is interposed between the base portion and the wedge-shaped tooth, and the core wire is formed by at least one first fiber strand, a predetermined portion One of the second fibers is disposed in the plurality of wedge teeth, the core wire and each of the second fibers are coated with at least one surfactant, and the outer layer of the core coated with the surfactant is further coated with at least one subsequent treatment The plurality of wedge teeth are engaged with the grooves of each of the transmission wheels. When the at least one of the transmission wheels rotates, the multi-slot transmission belt drives the transmission wheels to rotate. The multi-slot transmission belt of claim 1, wherein the second fiber corresponds to the plurality of wedge-shaped teeth of the ethylene propylene rubber. The predetermined number of parts is 10 to 40 phr. The multi-slot transmission belt of claim 1, wherein the base is further provided with the predetermined number of the second fibers, and the second fiber corresponds to the ethylene propylene rubber of the base The default number of copies is 10 to 40 phr. The multi-slot transmission belt of claim 3, wherein the interface between the core wire and the ethylene propylene rubber has a strength of 9 to 20 kgf. The multi-slot transmission belt of claim 3, wherein the first fiber is a high modulus low shrink fiber comprising polyester fiber or an aromatic polyamide fiber, the second fiber comprising glass fiber and carbon fiber. , aromatic polyamide fiber, polyester fiber or nylon fiber. The multi-slot drive belt of claim 4, wherein the subsequent treatment liquid system comprises resorcinol, formaldehyde, and latex. A multi-slot drive belt manufacturing method comprising the steps of: twisting at least one first fiber into at least one core wire; performing a first surface treatment on the core wire and a second fiber to make the core wire and the second fiber The outer surface is coated with at least one surfactant; the second surface processed by the first surface is subjected to a second surface processing to coat the surface of the outer layer of the core with a subsequent treatment liquid; mixing an ethylene propylene rubber and a predetermined number of parts The second fiber is uniformly dispersed in the ethylene propylene rubber; the ethylene propylene rubber having the second fiber which has been kneaded and calendered is rolled, and the second fiber is in the ethylene propylene rubber Arranging in a forward direction, wherein the second fiber is uniformly dispersed with the ethylene propylene rubber by a kneading machine, and the ethylene propylene rubber after kneading is calendered by a calender to make each of the second fibers in ethylene propylene. Aligning the rubber in a forward direction; forming the ethylene propylene rubber which has been calendered into an endless belt, and spirally surrounding the endless belt of the ethylene propylene rubber The annular belt is vulcanized and shaped by a high pressure vulcanization method, and the core wire and the second fiber are tightly combined with the ethylene propylene rubber, wherein the vulcanization time of the high pressure vulcanization method is 25 to 60 minutes, and the vulcanization pressure is The ratio is 10 to 30 kgf/cm 2 and the vulcanization temperature is 120 ° C to 180 ° C, and the bridging degree of the ethylene propylene rubber after the high pressure vulcanization treatment is higher than or equal to 90%; and a vulcanized stereotype having an appropriate width is obtained. The endless belt is formed into an endless belt body, and the endless belt body is ground by a high speed wedge type grinding machine, the endless belt body having a base portion and a plurality of wedge teeth, the plurality of wedge teeth Is located on the inner surface of the endless belt, and the at least one core is interposed between the base and the plurality Between the wedge teeth, the predetermined number of the second fibers are incorporated in the base and the plurality of wedge teeth. The method for manufacturing a multi-slot drive belt according to claim 7, wherein the second fiber corresponds to the base portion and the plurality of wedge-shaped teeth. The predetermined number of parts of the ethylene propylene rubber is 10 to 40 phr. The method for manufacturing a multi-slot drive belt according to claim 7, wherein the subsequent treatment liquid system comprises resorcinol, formaldehyde, latex, and the core wire and the step are processed by the second surface treatment. The ethylene propylene rubber has an interface strength of 9 to 20 kgf. The method of manufacturing a multi-slot drive belt according to claim 7, wherein the first fiber is a high modulus low shrink fiber comprising polyester fiber or an aromatic polyamide fiber, and the second fiber comprises a glass fiber. , carbon fiber, aromatic polyamide fiber, polyester fiber or nylon fiber.