WO2023210113A1 - Dispositif à chaîne - Google Patents

Dispositif à chaîne Download PDF

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Publication number
WO2023210113A1
WO2023210113A1 PCT/JP2023/005099 JP2023005099W WO2023210113A1 WO 2023210113 A1 WO2023210113 A1 WO 2023210113A1 JP 2023005099 W JP2023005099 W JP 2023005099W WO 2023210113 A1 WO2023210113 A1 WO 2023210113A1
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WO
WIPO (PCT)
Prior art keywords
chain
sprocket
resin
volume
chain element
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Application number
PCT/JP2023/005099
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English (en)
Japanese (ja)
Inventor
峻介 船木
友唯 町田
Original Assignee
株式会社椿本チエイン
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Filing date
Publication date
Application filed by 株式会社椿本チエイン filed Critical 株式会社椿本チエイン
Publication of WO2023210113A1 publication Critical patent/WO2023210113A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/18—Chains having special overall characteristics
    • F16G13/20—Chains having special overall characteristics stiff; Push-pull chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion

Definitions

  • the present invention relates to a chain device that includes a chain and a sprocket.
  • Patent Document 1 discloses an invention of a resin pulley in which a reinforcing material and a thermally conductive material are added in a range of 10% to 40% to a resin material of a pulley portion formed on the outer circumference of an outer ring of a radial ball bearing. ing. According to this resin pulley, the temperature rise due to heat generated in the radial ball bearing made of steel can be reduced by heat radiation from the pulley portion, and the occurrence of poor lubrication due to deterioration of the seal and grease is reduced.
  • a chain device that includes a sprocket and a chain formed by connecting a plurality of chain elements each having a flexible base portion and connecting portions located at both ends of the base portion. If this chain device is made of metal, it will be heavy and the use of lubricating oil will be essential because the metals will slide against each other. There is also the problem of noise caused by contact between metal parts.
  • this chain device is used as a food processing device, for example, if lubricating oil is used, there is a risk that the lubricating oil will adhere to the food. Therefore, chain devices in which both the sprocket and chain elements are made of resin have been developed. In the case of resin, the resin has self-lubricating properties, so there is an advantage that no lubricating oil is required and the noise is low during use.
  • An object of one aspect of the present invention is to provide a chain device that can suppress sliding heat generation of a chain and sprocket and reduce friction loss due to heat generation.
  • a chain device includes a sprocket containing resin, and a chain formed by connecting a plurality of chain elements containing resin, and the chain element is flexible. It has a flexible base part and connecting parts located at both ends of the base part, the sprocket resin and the chain element resin are different in type, and the sprocket resin has a glass transition temperature of 45°C. That's all.
  • the chain device of one aspect of the present invention it is possible to suppress heat generation due to sliding of the chain and sprocket, and reduce friction loss due to heat generation.
  • FIG. 1 is a partially cutaway perspective view showing a chain device according to Embodiment 1 of the present invention.
  • FIG. 2 is a perspective view of the chain element viewed from one direction.
  • FIG. 3 is a perspective view of the chain element seen from the other direction.
  • FIG. 4 is a partially cutaway front view showing a chain device according to Embodiment 2 of the present invention.
  • FIG. 5 is a perspective view of the chain element viewed from one direction.
  • the inventors decided to use different resins for the sprocket and chain elements. This reduces adhesion on the sliding surfaces, lowers the coefficient of friction, and reduces the amount of heat generated. Sprockets require better thermal conductivity because they have fewer teeth and a greater number of sliding movements compared to the number of chain elements.
  • the inventors also used a resin on the sprocket side that has a glass transition temperature of 45°C or higher, thereby reducing the friction caused by the heat generated by sliding. was found to be suppressed.
  • the inventors have found that the thermal conductivity of sprockets and/or chain elements can be further improved by adding fillers and/or thermally conductive fibers.
  • the sprocket and chain elements have good sliding properties in the resin chain device that does not use lubricating oil and is lightweight and low noise.
  • the formability and strength of the sprocket and chain elements are also good. By suppressing the amount of heat generated, friction loss is reduced and the amount of wear is also reduced. Squeaks are also less likely to occur.
  • Embodiment 1 ⁇ Chain device> EMBODIMENT OF THE INVENTION
  • the chain apparatus 100 of Embodiment 1 which is an example of this invention is demonstrated in detail using drawing.
  • each figure referred to below shows only the main members necessary for explaining the embodiment in a simplified manner. Therefore, the chain device 100 may include any constituent members not shown in the referenced figures. Further, the dimensions of the members in each figure do not faithfully represent the dimensions of the actual constituent members and the dimensional ratios of each member.
  • FIG. 1 is a perspective view showing a chain device 100.
  • the X-axis direction is the left-right direction
  • the Y-axis direction is the front-back direction
  • the Z-axis direction is the up-down direction.
  • the positive direction of the X-axis is the right direction
  • the positive direction of the Y-axis is the front direction
  • the positive direction of the Z-axis is the upward direction.
  • the chain device 100 includes an engaging chain 2, which is an example of a chain that can move forward and backward in the longitudinal direction, and a storage section 3 that accommodates the engaging chain 2 that moves forward and backward in a removable manner.
  • the meshing chain 2 has a first chain 4 and a second chain 5 that can mesh with each other.
  • the first chain 4 and the second chain 5 each have a plurality of chain elements 1 arranged in series, and adjacent chain elements 1 in the series direction are connected to each other.
  • the upper ends of the first chain 4 and the second chain 5 in FIG. 1 support functional members such as a top plate that moves up and down and a door that opens and closes, and move back and forth together with the engaging chain 2.
  • a movable body 6 is attached.
  • the meshing chain 2 meshes with each other and becomes linearly integrated.
  • the meshing chain 2 is released from the meshing state when the first chain 4 and the second chain 5 move from the meshing state in which they are mutually meshing to the backward direction opposite to the advancing direction.
  • a portion of the meshing chain 2 having a predetermined length is accommodated in the accommodating portion 3.
  • a portion of the meshing chain 2 having a predetermined length protrudes from the upper surface of the accommodating portion 3 when the first chain 4 and the second chain 5 move in the traveling direction.
  • the accommodating portion 3 has a rectangular front plate portion 31 that is long in the left-right direction, and a rear plate portion 32 that is arranged at a predetermined distance from the front plate portion 31.
  • a pair of curved guide grooves 33 are provided on the inner surfaces of the front plate part 31 and the rear plate part 32 so as to be divided into left and right sides for guiding the first chain 4 and the second chain 5 that have branched out from the meshed state.
  • a sprocket 7 is provided which is rotationally driven in both opposite directions. The sprocket 7 is arranged so that the tips of the teeth mesh with the portion where the first chain 4 and the second chain 5 mesh with each other to form a straight line from the side where the second chain 5 is located.
  • the movable body 6 is configured to move up and down as the engagement chain 2 moves up and down as the sprocket 7 rotates.
  • FIG. 2 is a perspective view of the chain element 1 viewed from one direction.
  • FIG. 3 is a perspective view of the chain element 1 viewed from the other direction.
  • the side where the first connecting portion 12 is located is referred to as the upper side.
  • the chain element 1 includes a flexible base portion 11 that is plate-shaped and has a predetermined length, and a first connecting portion located at the upper end side of the base portion 11 in the longitudinal direction. 12, and a second connecting portion 13 located on the lower end side of the base portion 11 in the longitudinal direction.
  • the thickness of the base portion 11 is slightly thinner than the width of the guide groove 33 (the height of the guide groove 33 in the Z-axis direction in FIG. 1).
  • the base portion 11 has an outer side surface that slides in the guide groove 33 when the chain element 1 moves within the housing portion 3 . When the base portion 11 slides on the curved portion of the guide groove 33, it bends along the curve of the guide groove 33.
  • the base portion 11 includes a first base portion 11a and a second base portion 11b that are arranged in parallel with a predetermined interval apart.
  • the first connecting portion 12 has a first side plate portion 12a, a second side plate portion 12b, a first lower plate portion 12e, a second lower plate portion 12f, a notch portion 12g, and a groove portion 12i.
  • the first side plate part 12a is provided on the upper part of the first base part 11a
  • the second side plate part 12b is provided on the upper part of the second base part 11b.
  • the first lower plate part 12e is continuous at right angles at the lower part of the first side plate part 12a
  • the second lower plate part 12f is continuous at right angle at the lower part of the second side plate part 12b
  • the first lower plate part 12e and the second lower plate part The side surfaces facing 12f are joined to each other.
  • the first side plate portion 12a has a first step portion 12c in which three steps are formed from top to bottom.
  • the second side plate portion 12b has a second step portion 12d in which three steps are formed from top to bottom.
  • a cutout portion 12g having a cutout end is formed at the lower part of the first lower plate portion 12e and the second lower plate portion 12f, as well as the first side plate portion 12a and the second side plate portion 12b.
  • a groove portion 12i is formed by the first side plate portion 12a, the second side plate portion 12b, the first lower plate portion 12e, and the second lower plate portion 12f.
  • the second connecting portion 13 includes a first side plate portion 13a, a second side plate portion 13b, a first upper plate portion 13e, a second upper plate portion 13f, a first lower plate portion 13g, a second lower plate portion 13h, and a locking portion. 13i, and a hole 13j.
  • the first side plate part 13a is provided at the lower part of the first base part 11a
  • the second side plate part 13b is provided at the lower part of the second base part 11b.
  • the first upper plate part 13e is continuous at right angles on the upper part of the first side plate part 13a
  • the first lower plate part 13g is continuous at right angle on the lower part of the first side plate part 13a.
  • the second upper plate part 13f is continuous at a right angle on the upper part of the second side plate part 13b
  • the second lower plate part 13h is continuous at a right angle on the lower part of the second side plate part 13b.
  • the opposing sides of the first lower plate part 13g and the second lower plate part 13h are joined to each other, and the opposing sides of the first upper plate part 13e and the second upper plate part 13f are joined to each other.
  • the first base part 11a and the second base part 11b are connected at the lower part.
  • the first side plate portion 13a has a first step portion 13c in which three steps are formed from top to bottom.
  • the second side plate portion 13b has a second step portion 13d in which three steps are formed from top to bottom.
  • a hole 13j is formed by the first side plate part 13a, the second side plate part 13b, the first upper plate part 13e, the second upper plate part 13f, the first lower plate part 13g, and the second lower plate part 13h.
  • a locking portion 13i that is locked to the notch 12g is formed at the upper end of the first lower plate portion 13g and the second lower plate portion 13h.
  • the chain element 1 contains resin as a base material (hereinafter, the resin contained as a base material will be referred to as base resin). That is, the base resin refers to a resin component that is contained in an amount of 50% by volume or more in a resin composition obtained by adding a filler and/or a thermally conductive fiber to a base resin. It is preferable that the base resin is contained in the resin composition in an amount of 55% by volume or more.
  • the base portion 11, the first connecting portion 12, and the second connecting portion 13 are integrally molded using a base resin.
  • the base resin has such flexibility that, when bending stress is generated in the thickness direction of the base portion 11, it can bend and deform in the direction in which the bending stress is applied.
  • engineering plastics having excellent wear resistance and self-lubricating properties are preferred.
  • engineering plastics have physical properties such as heat resistance of 100 degrees Celsius or more, strength of 50 MPa or more, and flexural modulus of 2.4 GPa or more.
  • the glass transition temperature of the base resin of the chain element 1 is preferably -60°C or higher, more preferably -50°C or higher.
  • the upper limit of the glass transition temperature of the base resin of the chain element 1 is not particularly limited, but may be 120°C or lower, or 100°C or lower.
  • Examples of the base resin of the chain element 1 include resins having crystallinity such as polyacetal (POM), polybutylene terephthalate (PBT), and polyamide 66 (PA66). One or more of these may be used. Only one of these may be used. Among these resins, POM and PA66 are preferred.
  • POM polyacetal
  • PBT polybutylene terephthalate
  • PA66 polyamide 66
  • the sprocket 7 includes a base resin.
  • the base resin of the sprocket 7 and the base resin of the chain element 1 are different in type. Different types mean that the molecular structures of the repeating units of the base resin are different. For example, POM having oxymethylene as a repeating unit and polyamide having an amide bond as a repeating unit are different types.
  • the glass transition temperature of the base resin of the sprocket 7 is 45° C. or higher.
  • the glass transition temperature of the base resin of the sprocket 7 is preferably 50° C. or higher.
  • the upper limit of the glass transition temperature of the base resin of the sprocket 7 is not particularly limited, but may be 150°C or lower, or 130°C or lower.
  • the glass transition temperature of the base resin of the sprocket 7 is preferably 50°C or more higher than the glass transition temperature of the base resin of the chain element 1, and more preferably 70°C or more higher.
  • Examples of the base resin of the sprocket 7 include polyamides such as polyamide 6 (PA6), polyamide 66 (PA66), and polynonamethylene terephthalamide (PA9T), polyphenylene sulfide (PPS), polyether ether ketone resin (PEEK), Examples include polyetherimide resin (PEI), crystalline or amorphous super engineering plastics, and the like. One or more of these may be used. Only one of these may be used. Among these resins, PA6, PA66, PPS, and PA9T are preferred.
  • the main component refers to a resin component that is contained in the base resin in an amount of 30% by volume or more.
  • Combinations of base resins for (a) chain element 1 and (b) sprocket 7 include (a) POM and (b) PA6, (a) POM and (b) PA66, and (a) POM and (b) PPS. , (a) POM and (b) PA9T, (a) PA66 and (b) PA9T, (a) POM and (b) PEEK, etc. are preferable.
  • the base resin of the sprocket 7 in the examples described below is one with a glass transition temperature of 50°C or higher, but based on the examples and comparative examples, the lower limit of the glass transition temperature of the sprocket 7 is 45°C. I have to.
  • the sprocket 7 and/or the chain element 1 contain filler and/or thermally conductive fibers in a range of 0% by volume to 45% by volume. That is, the sprocket 7 and/or the chain element 1 may contain at least one of a filler and a thermally conductive fiber, and may not contain either a filler or a thermally conductive fiber (in the case of 0% by volume). . "0 volume % or more and 45 volume % or less" refers to the total volume of the filler, heat conductive fiber added to the base resin for each of the sprocket 7 and the chain element 1.
  • the ratio of the resin composition consisting of the fibers and the base resin to the total volume is "0 volume % or more and 45 volume % or less".
  • a filler to the base resin among fillers and thermally conductive fibers.
  • filler and/or thermally conductive fiber to the base resin of the sprocket 7 in the sprocket 7 and the chain element 1. That is, it is more preferable that the sprocket 7 and/or the chain element 1 contain filler and/or thermally conductive fibers in an amount exceeding 0% by volume and not more than 45% by volume.
  • the base resin of the sprocket 7 and the chain element 1 is filled with graphite, silica, glass, boron nitride, layered silicate, carbon black, carbon nanotubes, graphene, alumina, aluminum nitride, mica, titanium oxide, and montmolinite.
  • silica and graphite are preferable.
  • graphite, carbon black, boron nitride, talc, and glass are preferable.
  • the base resin of the sprocket 7 and/or the chain element 1 can contain one or more types selected from the group consisting of carbon fiber, glass fiber, aluminum fiber, and ceramic fiber as the thermally conductive fiber.
  • carbon fiber and glass fiber are preferable.
  • thermally conductive fibers of the chain element carbon fibers and glass fibers are preferable.
  • the sprocket 7 and the chain element 1 will have poor formability and low strength, that is, they will lose their tenacity and become brittle. It has been confirmed that this will happen.
  • the total amount of filler and/or thermally conductive fiber added is 0% by volume or more and 45% by volume or less, the sprocket 7 and the chain element 1 have a good balance of thermal conductivity, formability, and strength.
  • the total amount added is less than 30% by volume, moldability becomes better.
  • the total amount added is 5% by volume or less, it is difficult to form a heat conduction path and the strength does not improve much.
  • the total amount added is 10% by volume or more, the strength becomes better. From the above, the total amount added to each of the sprocket 7 and the chain element 1 is more preferably 10 volume % or more and 45 volume % or less, and even more preferably 10 volume % or more and 25 volume % or less.
  • the total amount of chain elements 1 added is preferably 10% by volume or more from the viewpoint of further improving thermal conductivity and strength, and more preferably 20% by volume or more from the viewpoint of further improving thermal conductivity. preferable.
  • the total amount of chain elements 1 added is preferably 45% by volume or less, and more preferably 28% by volume or less from the viewpoint of further improving moldability.
  • the total amount of chain element 1 added is preferably 10 volume% or more and 45 volume% or less, more preferably 20 volume% or more and 45 volume% or less, and further preferably 20 volume% or more and 28 volume% or less. preferable.
  • the total amount added to the sprocket 7 is preferably 10% by volume or more from the viewpoint of further improving the strength, and more preferably 15% by volume or more from the viewpoint of further improving the thermal conductivity. From the viewpoint of further improvement, the content is more preferably 20% by volume or more.
  • the total amount of sprocket 7 added is preferably 45% by volume or less, and more preferably 27% by volume or less from the viewpoint of further improving formability.
  • the amount of sprocket 7 added is preferably 10 volume% or more and 45 volume% or less, more preferably 15 volume% or more and 45 volume% or less, and even more preferably 15 volume% or more and 27 volume% or less. , it is particularly preferable that the content is 20% by volume or more and 27% by volume or less.
  • the sprocket 7 and the chain element 1 have good thermal conductivity in a resin chain device that does not use lubricating oil and is lightweight and low noise. Heat is well radiated at the sliding portion between the sprocket 7 and the chain element 1. That is, the sprocket 7 and the chain element 1 have good sliding properties. The formability and strength of the sprocket 7 and chain element 1 are also good. Since sliding heat generation is suppressed in the sliding portion between the sprocket 7 and the chain element 1, friction loss due to a decrease in elastic modulus is reduced, and the amount of wear is also reduced. Squeaks are also less likely to occur. Heat generation is also reduced in the sliding portion between the base portion 11 of the chain element 1 and the guide groove 33 of the housing portion 3.
  • FIG. 4 is a partially cutaway front view showing the chain device 101 of the second embodiment.
  • a chain device 101 according to the second embodiment includes a chain 9, a sprocket 7, a housing section 3, and a movable body 6.
  • the same parts as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.
  • the X-axis direction is the left-right direction
  • the Y-axis direction is the front-back direction
  • the Z-axis direction is the up-down direction.
  • the positive direction of the X-axis is the right direction
  • the positive direction of the Y-axis is the front direction
  • the positive direction of the Z-axis is the upward direction.
  • the chain 9 has a plurality of chain elements 8 arranged in series, and adjacent chain elements 8 in the series direction are connected to each other.
  • the chain device 101 of the second embodiment is configured with one chain 9, unlike the first embodiment.
  • FIG. 5 is a perspective view of the chain element 8 viewed from one direction.
  • the side where the first connecting portion 82 is located is referred to as the upper side.
  • the chain element 8 of the second embodiment includes a plate-shaped base portion 81 having a predetermined length, and a first connecting portion 82 located at the upper end side of the base portion 81 in the longitudinal direction (vertical direction). , and a second connecting portion 83 located on the lower end side.
  • the first connecting portion 82 has a box shape.
  • the second connecting portion 83 extends along the width direction of the base portion 81, and has an L-shaped end surface.
  • the first connecting portion 82 has an upper plate portion 82a, a lower plate portion 82b, a first side plate portion 82c, a second side plate portion 82d, a protruding portion 82f, a recessed portion 82g, and a hole 82e.
  • the upper plate part 82a and the lower plate part 82b are located above and below the first connecting part 82.
  • the second side plate portion 82d is located on the base portion 81 side, and the first side plate portion 82c is located on the opposite side to the second side plate portion 82d.
  • a protrusion 82f extending in the width direction of the second side plate 82d is provided approximately in the vertical center of the second side plate 82d.
  • the lower surface of the protruding portion 82f contacts the upper surface of the base portion 81.
  • a recess 82g having the same shape as the second connecting portion 83 and into which the second connecting portion 83 is fitted is provided above the protruding portion 82f of the second side plate portion 82d.
  • the hole 82e extends in a direction intersecting the base portion 81, with the opening of the hole 82e located in the first side plate portion 82c.
  • the second connecting portion 83 of the upper chain element 8 and the first connecting portion 82 of the lower chain element 8, which are arranged in the vertical direction, are connected. That is, by fitting the convex second connecting portion 83 into the recess 82g of the first connecting portion 82, the first connecting portion 83 of the lower chain element 8 is connected to the second connecting portion 83 of the upper chain element 8. portion 82 is connected.
  • the base portion 81 of the chain element 8 is guided by the curved guide groove 33 within the housing portion 3 and moves back and forth.
  • the first connecting portion 82 and the second connecting portion 83 of the connected chain elements 8 of the chain 9 form a straight line.
  • the tips of the teeth of the sprocket 7 mesh with the holes 82e of the first connecting portion 82.
  • the chain element 8 includes a base resin.
  • the base resin of the chain element 8 include resins having crystallinity such as POM, PBT, and PA66.
  • Sprocket 7 includes base resin.
  • the base resin of the sprocket 7 and the base resin of the chain element 8 are different in type.
  • Examples of the base resin of the sprocket 7 include polyamides such as PA6, PA66, and PA9T, PPS, and PEEK.
  • the sprocket 7 and the chain element 8 each contain a filler and/or a thermally conductive fiber at 0 volume % or more and 45 volume % or less.
  • the total addition amount of each of the sprocket 7 and the chain element 8 is more preferably 10 volume % or more and 45 volume % or less, and even more preferably 10 volume % or more and 25 volume % or less.
  • Examples of the filler include one or more selected from the group consisting of graphite, silica, glass, boron nitride, layered silicate, carbon black, carbon nanotubes, graphene, alumina, aluminum nitride, mica, titanium oxide, and montmolinite.
  • Examples of the fibers include one or more selected from the group consisting of carbon fibers, glass fibers, aluminum fibers, and ceramic fibers.
  • the chain device 101 of the second embodiment does not use lubricating oil and is lightweight, has good thermal conductivity, and has good thermal conductivity at the sliding part between the sprocket 7 and the chain element 8.
  • Heat is dissipated. That is, the sprocket 7 and the chain element 8 have good sliding properties. The formability and strength of the sprocket 7 and chain element 8 are also good.
  • the amount of heat generated is reduced, thereby reducing friction loss and reducing the amount of wear. Squeaks are also less likely to occur. Heat generation is also reduced in the sliding portion between the base portion 81 of the chain element 8 and the guide groove 33 of the housing portion 3.
  • chain element 1 was produced using POM having a glass transition temperature of -50° C. as the matrix resin without adding any filler or thermally conductive fiber to the matrix resin.
  • the matrix resin refers to a resin component contained in a resin composition in an amount of 50% by volume or more. It has the same meaning as the above-mentioned base resin.
  • a resin composition was prepared by using PA6 having a glass transition temperature of 50° C. as a matrix resin, adding 10% by volume of graphite as a filler to the matrix resin, and adding 10% by volume of carbon fiber as a thermally conductive fiber, Sprocket 7 was manufactured.
  • a chain device 100 of Example 1 was manufactured using the chain element 1 and the sprocket 7. Table 1 also lists the volume % of the total amount of filler and/or thermally conductive fiber added to the matrix resin of each of chain element 1 and sprocket 7.
  • Example 1 except that the chain element 1 having the matrix resin, filler, and thermally conductive fiber shown in Table 1 above, and the sprocket 7 having the matrix resin, filler, and thermally conductive fiber shown in Table 1 were manufactured. In the same manner as above, chain devices 100 of Examples 2 to 10 were manufactured.
  • Example 1 Example 1 except that the chain elements were made using POM with a glass transition temperature of -50°C as the matrix resin, and the sprocket was made using POM with a glass transition temperature of -50°C as the matrix resin.
  • a chain device of Comparative Example 1 was produced in the same manner.
  • the number of unfilled shots is 4 to 5 or less, more preferably that the number of unfilled is 2 to 3 or less, and the number of unfilled is 1 or less. It is even more preferable.
  • Thermal conductivity The chain devices of Examples 1 to 10 and Comparative Examples 1 to 3 were operated for 30 minutes under the following conditions and then stopped. One minute after the stop, the temperature of the sliding surface between the sprocket and the chain element was measured by thermography. . The temperature measurement position is indicated by arrow A in FIG.
  • the operating conditions and thermal conductivity evaluation criteria for the chain device are as follows.
  • Thermal conductivity evaluation criteria (C or higher passes) A 25°C or less B 30°C or less C 45°C or less D 46°C or more
  • the thermal conductivity is preferably 45°C or lower, more preferably 30°C or lower, and even more preferably 25°C or lower.
  • the strength is preferably 80 MPa or more, more preferably 100 MPa or more, and even more preferably 150 MPa or more.
  • the thermal conductivity is poor.
  • the glass transition temperature of the matrix resin of the sprocket 7 of Examples 1 to 10 is 50° C. or higher. As described above, when the resin of the sprocket 7 and the resin of the chain element 1 are different in type, and the glass transition temperature of the resin of the sprocket 7 is 45° C. or higher, the thermal conductivity is good.
  • the matrix resin for the sprocket 7 in the Examples is one with a glass transition temperature of 50°C or higher, but based on the Examples and Comparative Examples, the lower limit of the glass transition temperature of the sprocket was set to 45°C. There is.
  • Example 1 shows that adding a filler to the matrix resin of the chain element 1 improves thermal conductivity and strength.
  • Example 3 shows that adding a filler to the matrix resin of the chain element 1 provides a good balance of moldability, thermal conductivity, and strength.
  • the formability was C (pass), and the thermal conductivity and strength were good.
  • the formability is better.
  • a comparison of Examples 5, 6, and 9 shows that the strength is better when the total amount added is 10% by volume or more.
  • the total amount added to each of the sprocket and chain elements is preferably 0 volume% or more and 45 volume% or less, more preferably 10 volume% or more and 45 volume% or less, and 10 volume% or more and 25 volume% or less. It is even more preferable that there be.
  • the total amount of chain elements 1 added is preferably 10% by volume or more, more preferably 20% by volume or more.
  • the total amount of chain elements 1 added is preferably 45% by volume or less, more preferably 28% by volume or less.
  • the total amount of sprocket 7 added is preferably 10% by volume or more, more preferably 15% by volume or more, and even more preferably 20% by volume or more.
  • the total amount of sprocket 7 added is preferably 45% by volume or less, more preferably 27% by volume or less.
  • the sprocket 7 and the chain element 1 have good formability and strength, and the sliding parts of the chain device 100 have good thermal conductivity (heat dissipation). It was confirmed that That is, it was confirmed that the chain device 100 according to the example has good sliding properties and reduces friction loss due to heat generation.
  • the chain device according to the present invention is not limited to the chain devices 100 and 101 described above.
  • the configuration of the present invention includes a sprocket containing resin, and a chain formed by connecting a plurality of chain elements containing resin, and the chain element includes a flexible base part and connections located at both ends of the base part. It can be applied to any chain device having a section.
  • the embodiment of the present invention includes the following configuration.
  • Sprocket containing resin A chain formed by connecting a plurality of chain elements containing resin, The chain element has a flexible base portion and connecting portions located at both ends of the base portion, The resin of the sprocket and the resin of the chain element are different in type, A chain device, wherein the sprocket resin has a glass transition temperature of 45° C. or higher.
  • the sprocket and/or the chain element includes a filler
  • the filler material is one or more selected from the group consisting of graphite, silica, glass, boron nitride, layered silicate, carbon black, carbon nanotubes, graphene, alumina, aluminum nitride, mica, titanium oxide, and montmolinite.
  • the sprocket and/or the chain element include the thermally conductive fiber, The chain according to any one of [1] to [3], wherein the thermally conductive fiber contains one or more selected from the group consisting of carbon fiber, glass fiber, aluminum fiber, and ceramic fiber. Device.
  • the chain element contains one or more resins selected from the group consisting of polyacetal, polybutylene terephthalate, and polyamide 66
  • the sprocket has a resin selected from the group consisting of polyamide 6, polyamide 66, polynonamethylene terephthalamide, polyphenylene sulfide, polyetheretherketone resin, polyetherimide resin, and crystalline or amorphous super engineering plastics.
  • the chain device according to any one of [1] to [4], comprising one or more types of.
  • the sprocket and/or the chain element include thermally conductive fibers,
  • the chain element contains one or more resins selected from the group consisting of polyacetal, polybutylene terephthalate, and polyamide 66
  • the sprocket contains polyamide 6, polyamide 66, polynonamethylene terephthalamide, polyphenylene sulfide, polyether ether ketone resin, polyetherimide resin, and crystalline or amorphous super engineering plastic as resin [1 ] or the chain device according to [2].

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

L'invention concerne un dispositif à chaîne qui supprime la génération de chaleur par coulissement dans une chaîne et un pignon et permet de réduire la perte par frottement due à la génération de chaleur.　Ce dispositif à chaîne (100) comprend un pignon contenant une résine (7) et des chaînes (4, 5) qui sont formées par accouplement d'une pluralité d'éléments de chaîne contenant une résine (1), les éléments de chaîne (1) ayant chacun une section de base flexible (11) et des sections d'accouplement (12, 13) qui sont positionnées aux deux extrémités de la section de base (11). La résine du pignon (7) et la résine des éléments de chaîne (1) sont de types différents, et la température de transition vitreuse de la résine du pignon (7) est supérieure ou égale à 45 °C.
PCT/JP2023/005099 2022-04-27 2023-02-15 Dispositif à chaîne WO2023210113A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022073760A JP7385701B2 (ja) 2022-04-27 2022-04-27 チェーン装置
JP2022-073760 2022-04-27

Publications (1)

Publication Number Publication Date
WO2023210113A1 true WO2023210113A1 (fr) 2023-11-02

Family

ID=88518426

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/005099 WO2023210113A1 (fr) 2022-04-27 2023-02-15 Dispositif à chaîne

Country Status (2)

Country Link
JP (1) JP7385701B2 (fr)
WO (1) WO2023210113A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011105505A (ja) * 2009-11-20 2011-06-02 Tsubakimoto Chain Co 噛合チェーン式進退作動装置
JP2015124056A (ja) * 2013-12-26 2015-07-06 ツバキ山久チエイン株式会社 搬送チェーン用の摺動部材

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011105505A (ja) * 2009-11-20 2011-06-02 Tsubakimoto Chain Co 噛合チェーン式進退作動装置
JP2015124056A (ja) * 2013-12-26 2015-07-06 ツバキ山久チエイン株式会社 搬送チェーン用の摺動部材

Also Published As

Publication number Publication date
JP2023162996A (ja) 2023-11-09
JP7385701B2 (ja) 2023-11-22

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