WO2020110405A1 - Powder container inverting device for heating furnace - Google Patents

Powder container inverting device for heating furnace Download PDF

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Publication number
WO2020110405A1
WO2020110405A1 PCT/JP2019/034866 JP2019034866W WO2020110405A1 WO 2020110405 A1 WO2020110405 A1 WO 2020110405A1 JP 2019034866 W JP2019034866 W JP 2019034866W WO 2020110405 A1 WO2020110405 A1 WO 2020110405A1
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WO
WIPO (PCT)
Prior art keywords
heating furnace
powder container
powder
reversing
reversing device
Prior art date
Application number
PCT/JP2019/034866
Other languages
French (fr)
Japanese (ja)
Inventor
英明 大竹
上士 岡島
Original Assignee
株式会社ノリタケカンパニーリミテド
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ノリタケカンパニーリミテド filed Critical 株式会社ノリタケカンパニーリミテド
Priority to CN201980077859.3A priority Critical patent/CN113167533B/en
Priority to DE112019005895.9T priority patent/DE112019005895T5/en
Priority to KR1020217013741A priority patent/KR20210093878A/en
Publication of WO2020110405A1 publication Critical patent/WO2020110405A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/39—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic

Definitions

  • the present invention relates to a powder container reversing device for reversing a powder container containing a treated powder for taking out a treated powder after a heat treatment from a treating container containing a powder to be heat treated in a heating furnace,
  • the present invention relates to a technology for downsizing heating equipment such as a heating furnace.
  • the powder container reversing device for reversing the powder container containing the hydrogen pulverized powder of the raw material alloy for rare earth magnets described in Patent Document 1 is an in-line reversing device, and is provided near the outlet in the continuous heating furnace. On the transfer path in the recovery chamber provided, a part of the transfer conveyor and the powder container placed on it are reversed together in vacuum, and then, with the inert gas introduced, recovery is performed. The powder (hydrogen crushed powder) in the room is taken out.
  • the powder can be collected near the outlet of the continuous heating furnace up to the heat-resistant temperature of the member or part constituting the mechanism for reversing the powder container at a recoverable temperature, for example, about 100°C. Since the cooling chamber for cooling the entire container is provided, the furnace body and the conveyer conveyor become long, and the productivity cannot be obtained. On the other hand, when trying to improve productivity, there is a disadvantage that the thermal equipment such as a heating furnace becomes large.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a powder container reversing device for a heating furnace capable of recovering treated powder from a powder container having a relatively high temperature. Especially.
  • the gist of the first invention is that (a) the powder for removing heat-treated powder from a powder container that is continuously transported in a heating furnace in a state of containing the powder.
  • a powder container reversing device for a heating furnace for reversing a container comprising: (b) a reversing chamber which is surrounded by a partition wall which is fixed in position and temporarily accommodates the powder container sent out from the heating furnace; ) A pair of reversing shafts penetrating the partition wall and reversibly provided around a horizontal axis of rotation between a non-reversing position and a reversing position by a reversing actuator provided outside the reversing chamber, (d) A fixed gripping claw that is provided in the inversion chamber and is fixed to the indoor side end of the inversion shaft, and a tip end portion of the fixed gripping claw that is openable and closable with respect to the fixed gripping claw according to the biasing force of a spring.
  • a plurality of clamping devices for holding the outer peripheral wall of the powder container, and (e) an unclamp provided outside the reversing chamber in a state of penetrating the partition wall.
  • An unclamp shaft rotatably provided between the unclamp position and the clamp position by an actuator is provided, and an engaging piece that rotates together with the unclamp shaft when in the unclamp position is an unclamp shaft of the movable grip claw.
  • An unclamping device for pressing the base end portion and opening the clamping device against the biasing force of the spring.
  • the gist of the second invention is that in the first invention, the powder container is taken out from the heating furnace in an uncooled temperature state lower than the heat treatment temperature of the heating furnace.
  • the gist of a third invention is, in the first invention or the second invention, a partition wall surrounding the inversion chamber has a plurality of side walls including the opening/closing wall that can be opened and closed, and a ceiling that closes upper openings of the plurality of side walls. It is configured to be airtight by a wall and a powder storage device that closes lower openings of the plurality of side walls and that temporarily receives and stores powder that is dropped by reversing the powder container. ..
  • the gist of a fourth invention is that, in the third invention, the roller conveyor that conveys the powder container sent from the heating furnace, and the powder container that is conveyed to a predetermined position by the roller conveyor are: And a feeding device that feeds from a predetermined position onto the fixed gripping claw in the inversion chamber in which the opening/closing wall is opened.
  • the gist of the fifth invention is that in the invention according to any one of the first invention to the fourth invention, when the powder container is inverted in the inversion chamber, the inversion chamber is the same as the inside of the heating furnace. It is to be maintained in an inert gas atmosphere.
  • the gist of the sixth invention resides in that, in any one of the first to fifth inventions, at least the surface of the tip of the fixed gripping claw and the movable gripping claw is made of ceramics. ..
  • the gist of the seventh invention is that in any one of the first to sixth inventions, the spring is made of a heat-resistant alloy covered with a bellows made of a heat-resistant resin.
  • the gist of the eighth invention is that, in the invention of any one of the first to seventh inventions, the heating furnaces are arranged in parallel in a state in which the powder containers from the inlet to the outlet are conveyed in the opposite direction.
  • the powder container reversing device includes a pair of a first heating furnace and a second heating furnace, and a first conveying path from the outlet of the first heating furnace to the inlet of the second heating furnace and the second heating furnace.
  • the first powder container reversing device and the second powder container reversing device are respectively arranged in the second transport path from the outlet of the heating furnace to the inlet of the first heating furnace.
  • the gist of the ninth invention is that in the eighth invention, the first transport path is downstream of the first powder container reversing device and the second transport path is downstream of the second powder container reversing device.
  • a first powder filling device and a second powder filling device for filling the powder in the powder container are respectively arranged.
  • the reversing chamber which is surrounded by the partition wall which is fixed in position and which temporarily accommodates the powder container delivered from the heating furnace, and the partition wall is penetrated.
  • a pair of reversing shafts that are reversible about a horizontal rotation axis between a non-reversing position and a reversing position by a reversing actuator provided outside the reversing chamber;
  • a fixed gripping claw fixed to the indoor end of the shaft and a movable gripping claw that is provided to be openable and closable with respect to the fixed gripping claw and closes the tip of the fixed gripping claw according to the urging force of a spring.
  • a plurality of clamping devices for holding the outer peripheral wall of the powder container, and an unclamping actuator provided outside the reversing chamber between the unclamping position and the clamping position while penetrating the partition wall.
  • An engaging piece that has a unclamp shaft rotatably provided and that rotates together with the unclamp shaft when in the unclamp position presses the base end portion of the movable gripping pawl to urge the spring.
  • an unclamping device that opens the clamping device against.
  • the powder container reversing device for a heating furnace of the second invention the powder container is taken out from the heating furnace in an uncooled temperature state lower than the heat treatment temperature of the heating furnace.
  • the powder container in the powder container can be taken out by inverting the powder container having a relatively high temperature.
  • the heating furnace can be shortened, so that even if it is attempted to improve productivity, it is possible to suppress the increase in the size of thermal equipment such as the heating furnace.
  • the partition wall that surrounds the reversing chamber includes a plurality of side walls including the openable and closable opening and closing wall, and a ceiling wall that closes upper openings of the plurality of side walls. It is airtightly configured by closing a lower opening of the plurality of side walls and receiving a powder dropped by reversing the powder container and temporarily storing the powder. Thereby, the powder can be taken out from the powder container having a relatively high temperature in the reversing chamber.
  • a roller conveyor that conveys the powder container sent from the heating furnace, and the powder container that is conveyed to a predetermined position by the roller conveyor, And a feeding device that feeds from the predetermined position on the roller conveyor onto the fixed gripping claw in the reversal chamber in which the opening/closing wall is opened.
  • the powder container is fed onto the fixed gripping claws in the reversing chamber, so that by closing the movable gripping claws, the powder container is reversibly gripped by the clamp device provided at the indoor end of the reversing shaft.
  • the powder container reversing device for a heating furnace of the fifth invention when the powder container is reversed in the reversing chamber, the reversing chamber is maintained in the same inert gas atmosphere as in the heating furnace. .. Thereby, since the powder in the powder container is taken out in the inert gas atmosphere, the reaction of the powder having a relatively high temperature with the air is suppressed.
  • At least the surface of the tip of each of the fixed gripping claw and the movable gripping claw is made of ceramics. From this, it is possible to prevent the impurities generated due to the contact between the fixed gripping claw and the movable gripping claw from contacting the powder container from being mixed into the powder taken out when the powder container is inverted.
  • the spring is made of a heat-resistant alloy covered with a bellows made of a heat-resistant resin, the metal particles generated by the breakage of the spring are powdered. Mixing in the powder taken out by reversing the body container is eliminated.
  • the heating furnace includes a pair of first heating furnaces arranged in parallel in a state in which the powder containers from the inlet to the outlet are conveyed in opposite directions.
  • the powder container reversing device comprises a second heating furnace, wherein the powder container reversing device includes a first conveying path from an outlet of the first heating furnace to an inlet of the second heating furnace and an outlet of the second heating furnace to the first heating furnace.
  • the first powder container reversing device and the second powder container reversing device respectively arranged in the second transport path to the inlet of the.
  • the powder container taken out from the outlet of the first heating furnace can be put into the inlet of the second heating furnace in a high temperature state without being cooled, so that a highly efficient heat treatment can be obtained by a small heat facility.
  • the downstream side of the first powder container reversing device in the first transfer path and the downstream side of the second powder container reversing device in the second transfer path are arranged, respectively.
  • a first powder filling device and a second powder filling device for filling the powder into the powder container are arranged, respectively.
  • FIG. 5 is a view showing a cross section of the reversing chamber of the first powder container reversing device of FIG. 1, that is, a cross section taken along line VV of FIG. 3. It is a figure which expands and demonstrates the clamp apparatus of FIG.
  • FIG. 1 is a plan layout view showing a first heating furnace 14 and a second heating furnace 16 which are continuous-conveying heating furnaces for heat-treating powder.
  • the first heating furnace 14 and the second heating furnace 16 are configured in the same manner as each other, but the conveying directions of the powder container 18 are opposite to each other, that is, the outlet 14b of the first heating furnace 14 and the second heating furnace
  • the inlets 16a of the furnace 16 are adjacent to each other, and the outlets 16b of the second heating furnace 16 and the inlets 14a of the first heating furnace 14 are adjacent to each other, and are arranged in parallel at a predetermined interval of about several meters.
  • the first heating furnace 14 and the second heating furnace 16 are arranged in parallel at a predetermined interval of, for example, a fraction of the length of the powder container 18, for example, 100 mm, with the furnace bodies penetrating in the horizontal direction.
  • a plurality of heating furnace transfer rollers (not shown) that are driven to rotate by a drive device (not shown) are provided, and the powder container 18 on the transfer rollers is continuously and linearly fed from the inlets 14a and 16a to the outlets 14b and 16b.
  • It is a tunnel type heating furnace (roller hearth kiln) that heats the powder in the powder container 18 at a predetermined temperature in a predetermined furnace atmosphere, for example, an inert gas atmosphere while transporting each.
  • the powder containers 18 may be continuously transported one by one at a predetermined interval, but in the present embodiment, six powder containers 18 are transported side by side in a row.
  • the powder container 18 is a kind of kiln tool called a bowl or a sheath, and has, for example, a rectangular container shape for containing powder to be heat treated such as an electrode material of a lithium ion battery, It is composed of a heat-resistant inorganic material such as alumina, SiC, mullite cordierite, mullite, spinel cordierite, magnesia and zirconia.
  • the powder containers 18 are conveyed in a line at a predetermined interval, a first outlet side curved roller conveyor 20, a first linear roller conveyor. 22 and the first entrance side curved roller conveyor 24 are arranged.
  • the six parallel powder containers 18 carried out on the first heating furnace conveying roller 14c on the outlet 14b side of the first heating furnace 14 are individually transferred by the first outlet handling device 26 to the first outlet side curved roller conveyor.
  • it is transferred to the start end of the roller 20, it is conveyed to the end of the first inlet curved roller conveyor 24 via the first outlet curved roller conveyor 20 and the first linear roller conveyor 22.
  • the first exit-side curved roller conveyor 20, the first linear roller conveyor 22, and the first entrance-side curved roller conveyor 24 form a first transport path.
  • Six of the powder containers 18 reaching the end of the first inlet side curved roller conveyor 24 are arranged in parallel on the second heating furnace conveying roller 16c on the inlet 16a side of the second heating furnace 16 by the first inlet handling device 28. And is passed through the second heating furnace 16.
  • the second outlet side curved roller conveyor 30 is arranged between the outlet 16b of the second heating furnace 16 and the inlet 14a of the first heating furnace 14.
  • the second outlet side curved roller conveyor 30 is arranged between the outlet 16b of the second heating furnace 16 and the inlet 14a of the first heating furnace 14.
  • the six parallel powder containers 18 carried out onto the second heating furnace conveying roller 16c on the outlet 16b side of the second heating furnace 16 are transferred to the second outlet side curved roller conveyor one by one by the second outlet handling device 36.
  • it is transferred to the start end of the sheet 30, it is conveyed to the end of the second entrance side curved roller conveyor 34 via the second exit side curved roller conveyor 30 and the second linear roller conveyor 32.
  • the second exit-side curved roller conveyor 30, the second linear roller conveyor 32, and the second entrance-side curved roller conveyor 34 form a second transport path.
  • the powder containers 18 reaching the end of the second inlet side curved roller conveyor 34 are arranged in parallel by the second inlet handling device 38 onto the first heating furnace conveying rollers 14c on the inlet 14a side of the first heating furnace 14. And is passed through the first heating furnace 14.
  • the first linear roller conveyor 22 between the outlet 14b of the first heating furnace 14 and the inlet 16a of the second heating furnace 16 has a first crushing device for crushing the powder P after the heat treatment in the powder container 18.
  • a first powder container reversing device 42 for taking out the heat-treated powder P crushed by the first crushing device 40 from the powder container 18, and after being reversed by the first powder container reversing device 42
  • a first cleaning device 44 for cleaning the inside of the powder container 18 and a first powder filling device 46 for filling the powder container 18 cleaned by the first cleaning device 44 with new powder P are sequentially provided. Has been.
  • the first crushing device 40, the first powder container reversing device 42, The second crushing device 50, the second powder container reversing device 52, the second cleaning device 54, and the second powder filling device 56, which are similar to the first cleaning device 44 and the first powder filling device 46, are sequentially provided. ing.
  • the powder container 18 is carried out from the outlet 14b of the first heating furnace 14 while being kept at a relatively high temperature such as an uncooled temperature, for example, about 400° C., which is lower than the heat treatment temperature of the first heating furnace 14, the powder container 18 is relatively discharged. It is arranged near the outlet 14b of the first heating furnace 14 through the first crushing device 40, the first powder container reversing device 42, the first cleaning device 44, and the first powder filling device 46 in the high temperature state. It is conveyed in a short time to the inlet 16a of the second heating furnace 16 thus prepared.
  • a relatively high temperature such as an uncooled temperature, for example, about 400° C.
  • the powder container 18 was carried out from the outlet 16b of the second heating furnace 16 at a relatively high temperature such as an uncooled temperature, for example, about 400° C., which is sufficiently lower than the heat treatment temperature of the second heating furnace 16. After that, it is conveyed in a short time to the inlet 14a of the first heating furnace 14 arranged near the outlet 16b of the second heating furnace 16 in a relatively high temperature state. In this way, since the powder P is taken out and the powder P is filled in the powder container 18 at a relatively high temperature, the thermal efficiency is improved, and in the first heating furnace 14 and the second heating furnace 16, The preheating section and the cooling section provided before and after the heat treatment section are reduced, and the furnace length is shortened.
  • a relatively high temperature such as an uncooled temperature, for example, about 400° C.
  • first powder container reversing device 42 Since the first powder container reversing device 42 and the second powder container reversing device 52 have the same configuration, the first powder container reversing device 42 will be described below and the second powder container reversing device 52 will be described. The description is omitted.
  • FIG. 2 is a plan view showing the first powder container reversing device 42.
  • FIG. 3 is a front view showing the first powder container reversing device 42 as seen from the direction opposite to the transport direction A of the first linear roller conveyor 22.
  • FIG. 4 is a side view showing the first powder container reversing device 42 as seen from a direction orthogonal to the transport direction A of the first linear roller conveyor 22.
  • the first linear roller conveyor 22 has a plurality of conveying rollers 22a, and in the present embodiment, as shown in FIG. 4, a roller driving motor 57 provided for every five conveying rollers 22a rotates through a chain 58. It is designed to be driven.
  • the first powder container reversing device 42 includes two pairs of fixed grips in the reversing chamber 62, one powder container 18 at a time in a direction orthogonal to the transport direction A of the first linear roller conveyor 22. It is provided with a front-rear transfer device 64 for carrying over the claws 120a and 120b, and a container reversing mechanism 80 for reversing the powder container 18 in the reversing chamber 62.
  • the container reversing mechanism 80 is an outline type reversing device that reverses the powder container 18 at a position deviated from the conveyance path of the first linear roller conveyor 22 rather than on the conveyance path of the first linear roller conveyor 22.
  • the front-rear transfer device 64 includes a front-rear cylinder 70, a pair of front-rear slide rods 74 parallel to each other, and a pair of container receiving members 76.
  • the front and rear cylinders 70 are provided on an elevating frame 68 which is vertically guided by four vertical direction guiding devices 65 and is vertically moved with respect to the frame 60 by a pair of elevating cylinders 66.
  • the pair of front and rear slide rods 74 which are parallel to each other, are positioned by the pair of slide bushes 72 fixed to the elevating frame 68 in the horizontal direction perpendicular to the transport direction A of the first linear roller conveyor 22 and between the transport rollers 22a. And is driven by the front and rear cylinders 70.
  • Each pair of container receiving members 76 is provided so as to project upward from the tip of the pair of front and rear slide rods 74, and supports the bottom surface of the powder container 18 from below.
  • the front-rear transfer device 64 sends the powder containers 18 one by one onto the two pairs of fixed gripping claws 120a and 120b in the reversing chamber 62, and the powder containers 18 after the reversal are paired with the two fixed gripping claws 120a.
  • 120b which functions as a transfer device for returning the first linear roller conveyor 22 from above, and is covered by a cover 78.
  • a container positioning device 79 that positions the powder container 18 before being lifted upward by the container receiving member 76 is provided.
  • the container positioning device 79 includes a rotation shaft 79a that is rotatably supported around a horizontal axis, a cylinder 79b that rotates the rotation shaft 79a, and a contact member 79c that is fixed to the rotation shaft 79a.
  • the contact member 79c is rotated to a position where it does not interfere with the powder container 18, but before the next powder container 18 that has passed through is fed into the reversing chamber 62. 4 is moved down to the position shown by the broken line in FIG. 4 and abutted on the powder container 18 for positioning.
  • An opening/closing wall (shutter) 86 that is opened/closed by an opening/closing cylinder 84 is provided in the reversing chamber 62 surrounded by the side wall 82 fixed in position.
  • the front-rear transfer device 64 transfers the powder container 18 carried by the first linear roller conveyor 22 (see FIG. 1) into the reversing chamber 62 when the opening/closing wall 86 is opened.
  • the inside of the inversion chamber 62 is maintained in the same atmosphere as the atmosphere in the first heating furnace 14.
  • the container reversing mechanism 80 penetrates the side wall 82 and is horizontally parallel to the transport direction A between the non-reversing position and the reversing position by the reversing actuator 88 provided outside the reversing chamber 62.
  • a pair of reversing shafts 90 and 92 provided so as to be reversible around the rotation axis C, and provided inside the reversing chamber 62, and fixed to indoor end portions of the pair of reversing shafts 90 and 92, respectively.
  • a pair of clamp devices 94 and 96 for gripping the outer peripheral wall 18a of the powder container 18 from the height direction when inverting 18 and a pair of clamp devices 94 and 96 are opened to release the gripped state of the powder container 18.
  • Unclamping devices 98 and 100 are provided.
  • the pair of reversing shafts 90 and 92 are provided on the outer wall surface of the partition wall 82 of the reversing chamber 62 via a pair of underframes 101 made of a frame material so as to have a heat insulating function, respectively.
  • the reversing actuator 88 is fixed to the outer surface of the reversing chamber 62, and an underframe 105 formed of a frame material so as to have a heat insulating function, and a pair of each provided on the outer wall surface of the partition wall 82 through the underframe 105.
  • FIG. 5 is a sectional view taken along line VV of FIG. 3 and is an enlarged sectional view showing the inside of the reversing chamber 62 in an enlarged manner.
  • FIG. 6 is an enlarged view for explaining the clamp device 96. 5 and 6, the clamp device 96 has a pair of fixed gripping claws 120a and 120b fixed to the reversing plate 119 fixed to the inner end of the reversing shaft 90 and a pair of fixed gripping claws 120a and 120b. And a pair of movable gripping claws 122a and 122b rotatably supported around a gripping claw rotation shaft 121 fixed to the reversing plate 119 so that the fixed gripping claws 120a and 120b can be opened and closed.
  • clamp device 94 is also configured similarly to the clamp device 96, the same reference numerals are given to the components and the description thereof will be omitted.
  • the clamp devices 94 and 96 are reversed together with the reversing shafts 90 and 92 while holding the outer peripheral wall 18a of the powder container 18 from the height direction thereof.
  • the fixed gripping claws 120a and 120b are formed with receiving surfaces 126a and 126b that are recessed from the upper surface to receive the bottom surface of the powder container 18, and prevent the powder container 18 from slipping or falling during inversion. It is supposed to be done.
  • the unclamping device 98 is fixed to the outer wall surface of the side wall 82 through a pair of underframes 127 (see FIG. 2) formed of a frame material so as to have a heat insulating function while penetrating the reversing chamber 62.
  • a pair of unclamp shafts 129 rotatably supported by bearings 128 (see FIG. 2) and a pair of unclamp shafts 129 provided outside the reversing chamber 62 are provided between the clamp position and the unclamp position.
  • the clamp device 94 is opened against the biasing force of 124a and 124b. Since the unclamping device 100 is also configured similarly to the unclamping device 98, the same reference numerals are given to the components and the description thereof will be omitted.
  • the metal parts in the reversing chamber 62 for example, the components of the pair of reversing shafts 90 and 92 and the clamp devices 94 and 96 are made of a heat-resistant alloy.
  • the tip end portions of the pair of movable gripping claws 122a and 122b and the tip end portions of the fixed gripping claws 120a and 120b are made of ceramics or are covered with ceramic spraying, and at least the surface of the tip end is made of ceramics. Therefore, the generation of impurities is prevented by the contact with the powder container 18.
  • the springs 124a and 124b are also made of a heat resistant alloy.
  • the reversal chamber 62 closes the side wall 82, the ceiling wall 134 that closes the upper opening of the side wall 82, the upper opening of the side wall 82, and receives the powder P falling from the powder container 18 by reversing the powder container 18. It is hermetically enclosed by a partition wall composed of a hopper 136 with a shutter 136a that functions as a powder storage device for temporarily storing. Atmosphere gas is introduced into the inversion chamber 62 in order to maintain the same inert atmosphere as in the first heating furnace 14.
  • the first heating furnace is surrounded by the partition walls (the side wall 82, the ceiling wall 134, and the hopper 136) whose positions are fixed.
  • the reversing chamber 62 that temporarily accommodates the powder container 18 that has been sent out from the reversing chamber 14 and the side wall (partition wall) 82 of the reversing chamber 62, and the reversing actuator 88 provided outside the reversing chamber 62 moves the non-reversing position.
  • a pair of reversing shafts 90 and 92 provided so as to be reversible about a horizontal rotation axis between the reversing position and a fixing provided inside the reversing chamber 62 and fixed to indoor end portions of the reversing shafts 90 and 92.
  • Movable gripping claws 122a and 122b that are provided to be openable and closable with respect to the gripping claws 120a and 120b and the fixed gripping claws 120a and 120b and close between the gripping claws 120a and 120b and the tips of the fixed gripping claws 120a and 120b.
  • the movable gripping claw 122a has an unclamp shaft 129 rotatably provided by a clamp actuator 130 between an open position and a closed position, and an engaging piece 132 that rotates together with the unclamp shaft 129 when in the open position. , 122b and unclamping devices 98, 100 that open the clamping devices 94, 96 against the biasing forces of the springs 124a, 124b by pressing the proximal ends.
  • the powder container 18 having a relatively high temperature is reversed to dispose the powder in the powder container 18. P can be taken out. Further, since it is not necessary to lower the temperature of the latter half of the heating furnace 14 to near room temperature, the heating furnace 14 can be shortened, so that the thermal equipment such as the heating furnace 14 becomes large in size even if the productivity is increased. Is suppressed.
  • the powder container 18 is taken out from the heating furnace 14 in an uncooled temperature state lower than the heat treatment temperature of the heating furnace 14.
  • the powder P in the powder container 18 can be taken out by inverting the powder container 18 having a relatively high temperature.
  • the heating furnace 14 can be shortened, so that the thermal equipment such as the heating furnace 14 becomes large in size even if the productivity is increased. Is suppressed.
  • the partition wall surrounding the reversing chamber 62 is a plurality of side walls 82 including openable and closable walls, and a ceiling wall that closes upper openings of the plurality of side walls 82.
  • 134 and an hopper 136 that closes the lower openings of the plurality of side walls 82 and receives the powder P dropped by reversing the powder container 18 and temporarily stores the powder P.
  • the powder P can be taken out from the powder container 18 having a relatively high temperature in the reversing chamber 62.
  • the roller conveyor (24, 26, 28) for carrying the powder container 18 sent out from the heating furnace 14 and the predetermined position by the roller conveyor.
  • the powder container 18 is further provided with a front-rear transfer device (sending device) 64 for sending the powder container 18 from the predetermined position on the roller conveyor onto a fixed gripping claw in the reversing chamber 62 in which the opening/closing wall 86 is opened.
  • sending device sending device
  • the powder container 18 is provided at the indoor side end portions of the reversing shafts 90 and 92.
  • the clamp devices 94 and 96 are clamped in a reversible manner.
  • the inside of the reversing chamber 62 is inactive like the inside of the first heating furnace 14. Maintained in a gas atmosphere. As a result, the powder P in the powder container 18 is taken out in the inert gas atmosphere, so that the reaction of the powder having a relatively high temperature with the air is suppressed.
  • the surfaces of the tips of the fixed grip claws 120a and 120b and the movable grip claws 122a and 122b are made of ceramics. Therefore, impurities generated due to the contact between the fixed grasping claws 120a and 120b and the movable grasping claws 122a and 122b and the powder container 18 are mixed in the powder P taken out by reversing the powder container 18. Is eliminated.
  • the springs 124a and 124b are made of the heat-resistant alloy covered with the bellows 125 made of heat-resistant resin, the springs 124a and 124b are damaged. It is possible to prevent the metal particles generated by mixing in the powder P taken out by reversing the powder container 18.
  • the powder container 18 from the inlet to the outlet is constituted by a pair of the first heating furnace 14 and the second heating furnace 16 which are arranged in parallel so that the powder container 18 is conveyed in the opposite direction.
  • the powder container reversing device 42 is arranged in the first transfer path (20, 22, 24) from the outlet 14b of the first heating furnace 14 to the inlet 16a of the second heating furnace 16, and the second powder container reversing device 52 is provided.
  • the powder container 18 discharged from the outlet 14b of the first heating furnace 14 is not cooled so much and is put into the inlet 16a of the second heating furnace 16 in a high temperature state, so that a small heat is generated.
  • heat treatment with high efficiency can be obtained by the equipment and heat loss is suppressed.
  • a first powder filling device 46 and a second powder filling device 56 for filling the powder P into the powder container 18 are arranged downstream of the reversing device 52, respectively.
  • the powder container 18 discharged from the outlet 14b of the first heating furnace 14 is not cooled but is inverted in the high temperature state, and the heat-treated powder P is taken out. Since the body P is filled and put into the inlet 16a of the second heating furnace 16, there is an advantage that a high-efficiency heat treatment can be obtained by a small-sized heat facility and heat loss is suppressed.
  • the two first heating furnaces 14 and the second heating furnaces 16 arranged in parallel are used, but the first heating furnace 14 or the second heating furnace 16 is arranged alone. May be.
  • the outlet 14b of the first heating furnace 14 is maintained so that the same atmosphere as the furnace atmosphere of the first heating furnace 14 is maintained.
  • a partition wall is provided to cover the first heating furnace transport roller 14c, the first outlet side curved roller conveyor 20, and the first linear roller conveyor 22.
  • a crushing device such as a roll crusher or a cooling device and a main hopper may be provided below the hopper 136.
  • the hopper 136 does not include the shutter 136a, but the main hopper has a shutter.
  • the main hopper corresponds to the powder storage device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Tunnel Furnaces (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Furnace Details (AREA)

Abstract

Provided is a powder container inverting device for a heating furnace, with which it is possible to recover processed powder from a high temperature powder container. When a pair of inversion shafts (90), (92) are inverted by means of an inverting actuator provided outside an inversion chamber (62), a powder container being held by clamp devices (94), (96) fixed to chamber inside end portions of the inversion shafts (90), (92) is inverted, and powder in the powder container is removed. Since the inverting actuator and an unclamping actuator (130), which have a relatively low resistance to heat, are provided outside the inversion chamber (62), the relatively high temperature powder container can be inverted to remove the powder from inside the powder container. Further, since it is not necessary to reduce the temperature to near ambient temperature in a rear half part of the heating furnace, allowing the heating furnace to be shortened, an increase in the size of thermal equipment such as a heating furnace can be suppressed, even while improving productivity.

Description

加熱炉用粉体容器反転装置Powder container reversing device for heating furnace
　本発明は、加熱炉において加熱処理する粉体を収容する処理容器から加熱処理後の処理粉体を取り出すための処理粉体を収容する粉体容器を反転させる粉体容器反転装置に関し、とりわけ、加熱炉などの加熱設備を小型化する技術に関する。 The present invention relates to a powder container reversing device for reversing a powder container containing a treated powder for taking out a treated powder after a heat treatment from a treating container containing a powder to be heat treated in a heating furnace, The present invention relates to a technology for downsizing heating equipment such as a heating furnace.
　従来、たとえば粉体を収容した状態で加熱炉内を搬送ローラによって順次搬送された搬送容器内から加熱処理後の粉体を取り出すに際しては、加熱炉の出口付近にたとえば１００℃程度の温度まで冷却する冷却室を設け、その冷却室内では比較的耐熱性の低い反転装置が用いられ、その処理容器を反転させて処理容器内から粉体を取り出すことが行なわれていた。たとえば、特許文献１に記載された希土類系磁石用原料合金の水素粉砕粉を収容する粉体容器を反転させる粉体容器反転装置がそれである。 Conventionally, for example, when taking out powder after heat treatment from the inside of a transfer container which is sequentially transferred by a transfer roller in a heating furnace in a state of containing the powder, it is cooled to a temperature of about 100° C. near the outlet of the heating furnace. The cooling chamber is provided, and a reversing device having a relatively low heat resistance is used in the cooling chamber to invert the processing container and take out the powder from the processing container. For example, there is a powder container reversing device for reversing a powder container containing hydrogen pulverized powder of a raw material alloy for rare earth magnets described in Patent Document 1.
　特許文献１に記載の希土類系磁石用原料合金の水素粉砕粉を収容する粉体容器を反転させる粉体容器反転装置は、インライン式の反転装置であって、連続式加熱炉内の出口付近に設けられた回収室内の搬送路上において、真空中において搬送コンベアの一部と、その上に載置された粉体容器とが共に反転させられ、次いで、不活性ガスが導入された状態で、回収室内の粉体（水素粉砕粉）が取り出されるようになっている。 The powder container reversing device for reversing the powder container containing the hydrogen pulverized powder of the raw material alloy for rare earth magnets described in Patent Document 1 is an in-line reversing device, and is provided near the outlet in the continuous heating furnace. On the transfer path in the recovery chamber provided, a part of the transfer conveyor and the powder container placed on it are reversed together in vacuum, and then, with the inert gas introduced, recovery is performed. The powder (hydrogen crushed powder) in the room is taken out.
国際公開第２０１１／０１３４８９号International Publication No. 2011/013489
　しかしながら、上記粉体容器反転装置によれば、連続式加熱炉の出口付近に、回収可能な温度たとえば１００℃程度の、粉体容器を反転させる機構を構成する部材や部品の耐熱温度まで粉体容器ごと冷却する冷却室が設けられるので、炉体や搬送コンベアが長くなり、生産性が得られなかった。これに対して、生産性を高めようとすると、加熱炉などの熱設備が大型化するという不都合があった。 However, according to the powder container reversing device, the powder can be collected near the outlet of the continuous heating furnace up to the heat-resistant temperature of the member or part constituting the mechanism for reversing the powder container at a recoverable temperature, for example, about 100°C. Since the cooling chamber for cooling the entire container is provided, the furnace body and the conveyer conveyor become long, and the productivity cannot be obtained. On the other hand, when trying to improve productivity, there is a disadvantage that the thermal equipment such as a heating furnace becomes large.
　本発明は、以上の事情を背景として為されたものであり、その目的とするところは、比較的高温の粉体容器から処理粉体を回収可能な加熱炉用粉体容器反転装置を提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a powder container reversing device for a heating furnace capable of recovering treated powder from a powder container having a relatively high temperature. Especially.
　すなわち、第１発明の要旨とするところは、（ａ）粉体を収容した状態で加熱炉内を連続的に搬送された粉体容器内から加熱処理後の粉体を取り出すために前記粉体容器を反転させる加熱炉用粉体容器反転装置であって、（ｂ）位置固定の隔壁により囲まれ、前記加熱炉から送り出された前記粉体容器を一時的に収容する反転室と、（ｃ）前記隔壁を貫通し、前記反転室の外側に設けられた反転アクチュエータにより非反転位置と反転位置との間で水平な回転軸線まわりに反転可能に設けられた一対の反転軸と、（ｄ）前記反転室内に設けられ、前記反転軸の室内側端部に固定された固定把持爪と前記固定把持爪に対して開閉可能に設けられてスプリングの付勢力にしたがって前記固定把持爪の先端部との間を閉じる可動把持爪とを有し、前記粉体容器の外周壁を把持する複数のクランプ装置と、（ｅ）前記隔壁を貫通した状態で、前記反転室の外側に設けられたアンクランプアクチュエータによりアンクランプ位置とクランプ位置との間で回動可能に設けられたアンクランプ軸を有し、前記アンクランプ位置にあるときに前記アンクランプ軸とともに回転する係合片が前記可動把持爪の基端部を押圧して前記スプリングの付勢力に抗して前記クランプ装置を開くアンクランプ装置とを、含むことにある。 That is, the gist of the first invention is that (a) the powder for removing heat-treated powder from a powder container that is continuously transported in a heating furnace in a state of containing the powder. A powder container reversing device for a heating furnace for reversing a container, comprising: (b) a reversing chamber which is surrounded by a partition wall which is fixed in position and temporarily accommodates the powder container sent out from the heating furnace; ) A pair of reversing shafts penetrating the partition wall and reversibly provided around a horizontal axis of rotation between a non-reversing position and a reversing position by a reversing actuator provided outside the reversing chamber, (d) A fixed gripping claw that is provided in the inversion chamber and is fixed to the indoor side end of the inversion shaft, and a tip end portion of the fixed gripping claw that is openable and closable with respect to the fixed gripping claw according to the biasing force of a spring. A plurality of clamping devices for holding the outer peripheral wall of the powder container, and (e) an unclamp provided outside the reversing chamber in a state of penetrating the partition wall. An unclamp shaft rotatably provided between the unclamp position and the clamp position by an actuator is provided, and an engaging piece that rotates together with the unclamp shaft when in the unclamp position is an unclamp shaft of the movable grip claw. An unclamping device for pressing the base end portion and opening the clamping device against the biasing force of the spring.
　第２発明の要旨とするところは、第１発明において、前記粉体容器は、前記加熱炉の熱処理温度よりは低い未冷却温度状態で前記加熱炉から取り出されたものであることにある。 The gist of the second invention is that in the first invention, the powder container is taken out from the heating furnace in an uncooled temperature state lower than the heat treatment temperature of the heating furnace.
　第３発明の要旨とするところは、第１発明または第２発明において、前記反転室を囲む隔壁は、前記開閉可能な開閉壁を含む複数の側壁と、前記複数の側壁の上側開口を閉じる天井壁と、前記複数の側壁の下側開口を閉じ、且つ前記粉体容器の反転により落下させられる粉体を受けて一時的に貯留する粉体貯留装置とから気密に構成されていることにある。 The gist of a third invention is, in the first invention or the second invention, a partition wall surrounding the inversion chamber has a plurality of side walls including the opening/closing wall that can be opened and closed, and a ceiling that closes upper openings of the plurality of side walls. It is configured to be airtight by a wall and a powder storage device that closes lower openings of the plurality of side walls and that temporarily receives and stores powder that is dropped by reversing the powder container. ..
　第４発明の要旨とするところは、第３発明において、前記加熱炉から送り出された前記粉体容器を搬送するローラコンベアと、前記ローラコンベアにより所定位置まで搬送された前記粉体容器を、前記所定位置から前記開閉壁が開かれた前記反転室内の前記固定把持爪の上へ送り込む送込装置とを、さらに備えることにある。 The gist of a fourth invention is that, in the third invention, the roller conveyor that conveys the powder container sent from the heating furnace, and the powder container that is conveyed to a predetermined position by the roller conveyor are: And a feeding device that feeds from a predetermined position onto the fixed gripping claw in the inversion chamber in which the opening/closing wall is opened.
　第５発明の要旨とするところは、第１発明から第４発明のいずれか１の発明において、前記反転室内において前記粉体容器が反転させられるに際しては、前記反転室内が前記加熱炉内と同様の不活性ガス雰囲気に維持されることにある。 The gist of the fifth invention is that in the invention according to any one of the first invention to the fourth invention, when the powder container is inverted in the inversion chamber, the inversion chamber is the same as the inside of the heating furnace. It is to be maintained in an inert gas atmosphere.
　第６発明の要旨とするところは、第１発明から第５発明のいずれか１の発明において、前記固定把持爪および可動把持爪は、少なくともその先端の表面がセラミックスにより構成されていることにある。 The gist of the sixth invention resides in that, in any one of the first to fifth inventions, at least the surface of the tip of the fixed gripping claw and the movable gripping claw is made of ceramics. ..
　第７発明の要旨とするところは、第１発明から第６発明のいずれか１の発明において、前記スプリングは、耐熱樹脂製の蛇腹により被覆された耐熱合金から構成されていることにある。 The gist of the seventh invention is that in any one of the first to sixth inventions, the spring is made of a heat-resistant alloy covered with a bellows made of a heat-resistant resin.
　第８発明の要旨とするところは、第１発明から第７発明のいずれか１の発明において、前記加熱炉は、入口から出口に向かう前記粉体容器の搬送方向が逆向きの状態で並列配置された一対の第１加熱炉および第２加熱炉から構成され、前記粉体容器反転装置は、前記第１加熱炉の出口から前記第２加熱炉の入口への第１搬送路および前記第２加熱炉の出口から前記第１加熱炉の入口への第２搬送路にそれぞれ配置された第１粉体容器反転装置および第２粉体容器反転装置であることにある。 The gist of the eighth invention is that, in the invention of any one of the first to seventh inventions, the heating furnaces are arranged in parallel in a state in which the powder containers from the inlet to the outlet are conveyed in the opposite direction. The powder container reversing device includes a pair of a first heating furnace and a second heating furnace, and a first conveying path from the outlet of the first heating furnace to the inlet of the second heating furnace and the second heating furnace. The first powder container reversing device and the second powder container reversing device are respectively arranged in the second transport path from the outlet of the heating furnace to the inlet of the first heating furnace.
　第９発明の要旨とするところは、第８発明において、前記第１搬送路の前記第１粉体容器反転装置の下流側および前記第２搬送路の前記第２粉体容器反転装置の下流側には、前記粉体容器内に粉体を充填する第１粉体充填装置および第２粉体充填装置が、それぞれ配置されていることにある。 The gist of the ninth invention is that in the eighth invention, the first transport path is downstream of the first powder container reversing device and the second transport path is downstream of the second powder container reversing device. In the above, a first powder filling device and a second powder filling device for filling the powder in the powder container are respectively arranged.
　第１発明の加熱炉用粉体容器反転装置によれば、位置固定の隔壁により囲まれ、前記加熱炉から送り出された前記粉体容器を一時的に収容する反転室と、前記隔壁を貫通し、前記反転室の外側に設けられた反転アクチュエータにより非反転位置と反転位置との間で水平な回転軸線まわりに反転可能に設けられた一対の反転軸と、前記反転室内に設けられ、前記反転軸の室内側端部に固定された固定把持爪と前記固定把持爪に対して開閉可能に設けられてスプリングの付勢力にしたがって前記固定把持爪の先端部との間を閉じる可動把持爪とを有し、前記粉体容器の外周壁を把持する複数のクランプ装置と、前記隔壁を貫通した状態で、前記反転室の外側に設けられたアンクランプアクチュエータによりアンクランプ位置とクランプ位置との間で回動可能に設けられたアンクランプ軸を有し、前記アンクランプ位置にあるときに前記アンクランプ軸とともに回転する係合片が前記可動把持爪の基端部を押圧して前記スプリングの付勢力に抗して前記クランプ装置を開くアンクランプ装置とを、含む。このように、比較的熱に弱い反転アクチュエータおよびアンクランプアクチュエータは反転室の外側に設けられているので、反転室内で比較的高温の粉体容器を反転させて粉体容器内の粉体を取り出すことができる。また、加熱炉の後半部分において常温付近まで温度下降させる必要がなくなって加熱炉を短縮することができるので、生産性を高める場合にも、加熱炉などの熱設備が大型化することが抑制される。 According to the powder container reversing device for a heating furnace of the first invention, the reversing chamber which is surrounded by the partition wall which is fixed in position and which temporarily accommodates the powder container delivered from the heating furnace, and the partition wall is penetrated. A pair of reversing shafts that are reversible about a horizontal rotation axis between a non-reversing position and a reversing position by a reversing actuator provided outside the reversing chamber; A fixed gripping claw fixed to the indoor end of the shaft and a movable gripping claw that is provided to be openable and closable with respect to the fixed gripping claw and closes the tip of the fixed gripping claw according to the urging force of a spring. A plurality of clamping devices for holding the outer peripheral wall of the powder container, and an unclamping actuator provided outside the reversing chamber between the unclamping position and the clamping position while penetrating the partition wall. An engaging piece that has a unclamp shaft rotatably provided and that rotates together with the unclamp shaft when in the unclamp position presses the base end portion of the movable gripping pawl to urge the spring. And an unclamping device that opens the clamping device against. Thus, since the reversing actuator and the unclamp actuator, which are relatively weak against heat, are provided outside the reversing chamber, the powder container at a relatively high temperature is reversed inside the reversing chamber to take out the powder from the powder container. be able to. Further, in the latter half of the heating furnace, there is no need to lower the temperature to around room temperature, and the heating furnace can be shortened, so that even when productivity is increased, it is possible to prevent the thermal equipment such as the heating furnace from increasing in size. It
　第２発明の加熱炉用粉体容器反転装置によれば、前記粉体容器は、前記加熱炉の熱処理温度よりは低い未冷却温度状態で前記加熱炉から取り出されたものである。このようにすれば、比較的高温の粉体容器を反転させて粉体容器内の粉体を取り出すことができる。また、加熱炉の後半部分において常温付近まで温度下降させる必要がなくなって加熱炉を短縮することができるので、生産性を高めようとしても、加熱炉などの熱設備が大型化することが抑制される。 According to the powder container reversing device for a heating furnace of the second invention, the powder container is taken out from the heating furnace in an uncooled temperature state lower than the heat treatment temperature of the heating furnace. By doing so, the powder container in the powder container can be taken out by inverting the powder container having a relatively high temperature. Further, in the latter half of the heating furnace, there is no need to lower the temperature to around room temperature, and the heating furnace can be shortened, so that even if it is attempted to improve productivity, it is possible to suppress the increase in the size of thermal equipment such as the heating furnace. It
　第３発明の加熱炉用粉体容器反転装置によれば、前記反転室を囲む隔壁は、前記開閉可能な開閉壁を含む複数の側壁と、前記複数の側壁の上側開口を閉じる天井壁と、前記複数の側壁の下側開口を閉じ、且つ前記粉体容器の反転により落下させられる粉体を受けて一時的に貯留する粉体貯留装置とから気密に構成されている。これにより、反転室内において、比較的高温の粉体容器から粉体を取り出すことができる。 According to the powder container reversing device for a heating furnace of the third invention, the partition wall that surrounds the reversing chamber includes a plurality of side walls including the openable and closable opening and closing wall, and a ceiling wall that closes upper openings of the plurality of side walls. It is airtightly configured by closing a lower opening of the plurality of side walls and receiving a powder dropped by reversing the powder container and temporarily storing the powder. Thereby, the powder can be taken out from the powder container having a relatively high temperature in the reversing chamber.
　第４発明の加熱炉用粉体容器反転装置によれば、前記加熱炉から送り出された前記粉体容器を搬送するローラコンベアと、前記ローラコンベアにより所定位置まで搬送された前記粉体容器を、前記ローラコンベア上の前記所定位置から前記開閉壁が開かれた前記反転室内の前記固定把持爪の上へ送り込む送込装置とを、さらに備える。これにより、粉体容器は、反転室内の固定把持爪の上へ送り込まれるので、可動把持爪を閉じることによって、反転軸の室内側端部に設けられたクランプ装置によって反転可能に把持される。 According to the powder container reversing device for a heating furnace of the fourth invention, a roller conveyor that conveys the powder container sent from the heating furnace, and the powder container that is conveyed to a predetermined position by the roller conveyor, And a feeding device that feeds from the predetermined position on the roller conveyor onto the fixed gripping claw in the reversal chamber in which the opening/closing wall is opened. As a result, the powder container is fed onto the fixed gripping claws in the reversing chamber, so that by closing the movable gripping claws, the powder container is reversibly gripped by the clamp device provided at the indoor end of the reversing shaft.
　第５発明の加熱炉用粉体容器反転装置によれば、前記反転室内において前記粉体容器が反転させられるに際しては、前記反転室内が前記加熱炉内と同様の不活性ガス雰囲気に維持される。これにより、粉体容器内の粉体は、不活性ガス雰囲気内で取り出されるので、比較的高温の粉体が空気と反応することが抑制される。 According to the powder container reversing device for a heating furnace of the fifth invention, when the powder container is reversed in the reversing chamber, the reversing chamber is maintained in the same inert gas atmosphere as in the heating furnace. .. Thereby, since the powder in the powder container is taken out in the inert gas atmosphere, the reaction of the powder having a relatively high temperature with the air is suppressed.
　第６発明の加熱炉用粉体容器反転装置によれば、前記固定把持爪および可動把持爪は、少なくともその先端の表面がセラミックスにより構成されている。このことから、固定把持爪および可動把持爪と粉体容器との接触に起因して発生する不純物が、粉体容器の反転により取り出される粉体に混入することが解消される。 According to the powder container reversing device for a heating furnace of the sixth invention, at least the surface of the tip of each of the fixed gripping claw and the movable gripping claw is made of ceramics. From this, it is possible to prevent the impurities generated due to the contact between the fixed gripping claw and the movable gripping claw from contacting the powder container from being mixed into the powder taken out when the powder container is inverted.
　第７発明の加熱炉用粉体容器反転装置によれば、前記スプリングは、耐熱樹脂製の蛇腹により被覆された耐熱合金から構成されていることから、スプリングの破損によって発生する金属粒子が、粉体容器の反転により取り出される粉体に混入することが解消される。 According to the powder container reversing device for a heating furnace of the seventh invention, since the spring is made of a heat-resistant alloy covered with a bellows made of a heat-resistant resin, the metal particles generated by the breakage of the spring are powdered. Mixing in the powder taken out by reversing the body container is eliminated.
　第８発明の加熱炉用粉体容器反転装置によれば、前記加熱炉は、入口から出口に向かう前記粉体容器の搬送方向が逆向きの状態で並列配置された一対の第１加熱炉および第２加熱炉を備え、前記粉体容器反転装置は、前記第１加熱炉の出口から前記第２加熱炉の入口への第１搬送路および前記第２加熱炉の出口から前記第１加熱炉の入口への第２搬送路にそれぞれ配置された第１粉体容器反転装置および第２粉体容器反転装置である。このことから、第１加熱炉の出口から出された粉体容器は、冷却されることなく、高温状態で第２加熱炉の入口へ入れられるので、小型の熱設備により高能率の熱処理が得られるとともに、熱損失が抑制される利点がある。 According to the powder container reversing device for a heating furnace of the eighth aspect of the present invention, the heating furnace includes a pair of first heating furnaces arranged in parallel in a state in which the powder containers from the inlet to the outlet are conveyed in opposite directions. The powder container reversing device comprises a second heating furnace, wherein the powder container reversing device includes a first conveying path from an outlet of the first heating furnace to an inlet of the second heating furnace and an outlet of the second heating furnace to the first heating furnace. The first powder container reversing device and the second powder container reversing device respectively arranged in the second transport path to the inlet of the. From this, the powder container taken out from the outlet of the first heating furnace can be put into the inlet of the second heating furnace in a high temperature state without being cooled, so that a highly efficient heat treatment can be obtained by a small heat facility. In addition, there is an advantage that heat loss is suppressed.
　第９発明の加熱炉用粉体容器反転装置によれば、前記第１搬送路の前記第１粉体容器反転装置の下流側および前記第２搬送路の前記第２粉体容器反転装置の下流側には、前記粉体容器内に粉体を充填する第１粉体充填装置および第２粉体充填装置が、それぞれ配置されている。これにより、第１加熱炉の出口から出された粉体容器は、冷却されることなく、高温状態で反転させられて熱処理された粉体が取り出され、次いで新たな粉体が充填されて第２加熱炉の入口へ入れられるので、小型の熱設備により高能率の熱処理が得られるとともに、熱損失が抑制される利点がある。 According to the powder container reversing device for a heating furnace of the ninth invention, the downstream side of the first powder container reversing device in the first transfer path and the downstream side of the second powder container reversing device in the second transfer path. On the side, a first powder filling device and a second powder filling device for filling the powder into the powder container are arranged, respectively. As a result, the powder container discharged from the outlet of the first heating furnace is not cooled, and the powder that has been inverted and heat-treated in a high temperature state is taken out and then filled with new powder. Since it is put into the inlet of the two heating furnace, there is an advantage that the heat treatment with high efficiency can be obtained by the small heat equipment and the heat loss is suppressed.
本発明の一実施例の連続搬送式の加熱炉の配置図である。It is a layout diagram of a continuous transfer type heating furnace according to an embodiment of the present invention. 図１の連続搬送式の加熱炉の第１粉体容器反転装置を説明する平面図である。It is a top view explaining the 1st powder container reversing device of the heating furnace of the continuous conveyance type of FIG. 図１の連続搬送式の加熱炉の第１粉体容器反転装置を示す正面図であって、図１の第１直線ローラコンベアの搬送方向Ａの逆方向から見た図である。It is a front view which shows the 1st powder container reversing device of the heating furnace of a continuous conveyance type of FIG. 1, and is the figure seen from the reverse direction of the conveyance direction A of the 1st linear roller conveyor of FIG. 図１の第１直線ローラコンベアの搬送方向Ａに直交する方向から見た第１粉体容器反転装置を示す側面図である。It is a side view which shows the 1st powder container reversing device seen from the direction orthogonal to the conveyance direction A of the 1st linear roller conveyor of FIG. 図１の第１粉体容器反転装置の反転室の断面すなわち図３のＶ－Ｖ視断面を示す図である。FIG. 5 is a view showing a cross section of the reversing chamber of the first powder container reversing device of FIG. 1, that is, a cross section taken along line VV of FIG. 3. 図５のクランプ装置を拡大して説明する図である。It is a figure which expands and demonstrates the clamp apparatus of FIG.
　以下、本発明の加熱炉用粉体容器反転装置の一実施例について図面を参照して詳細に説明する。 Hereinafter, an embodiment of the powder container reversing device for a heating furnace of the present invention will be described in detail with reference to the drawings.
　図１は、粉体を加熱処理するための連続搬送式の加熱炉である第１加熱炉１４および第２加熱炉１６を示す平面配置図である。第１加熱炉１４および第２加熱炉１６は、互いに同様に構成されているが、粉体容器１８の搬送方向が逆向きとなるように、すなわち第１加熱炉１４の出口１４ｂと第２加熱炉１６の入口１６ａとが隣接し且つ第２加熱炉１６の出口１６ｂと第１加熱炉１４の入口１４ａとが隣接するように、数メートル程度の所定間隔を隔てて並列に配置されている。第１加熱炉１４および第２加熱炉１６は、それらの炉体を水平方向に貫通した状態でたとえば粉体容器１８の長さの数分の１程度の所定間隔たとえば１００ｍｍ間隔で平行に配置され且つ図示しない駆動装置によって回転駆動される図示しない複数本の加熱炉用搬送ローラをそれぞれ備え、搬送ローラ上の粉体容器１８を入口１４ａおよび１６ａから出口１４ｂおよび１６ｂへ連続的に且つ直線的にそれぞれ搬送しつつ、所定の炉内雰囲気たとえば不活性ガス雰囲気下で所定温度で粉体容器１８内の粉体を加熱処理するトンネル式加熱炉（ローラハースキルン）である。 FIG. 1 is a plan layout view showing a first heating furnace 14 and a second heating furnace 16 which are continuous-conveying heating furnaces for heat-treating powder. The first heating furnace 14 and the second heating furnace 16 are configured in the same manner as each other, but the conveying directions of the powder container 18 are opposite to each other, that is, the outlet 14b of the first heating furnace 14 and the second heating furnace The inlets 16a of the furnace 16 are adjacent to each other, and the outlets 16b of the second heating furnace 16 and the inlets 14a of the first heating furnace 14 are adjacent to each other, and are arranged in parallel at a predetermined interval of about several meters. The first heating furnace 14 and the second heating furnace 16 are arranged in parallel at a predetermined interval of, for example, a fraction of the length of the powder container 18, for example, 100 mm, with the furnace bodies penetrating in the horizontal direction. A plurality of heating furnace transfer rollers (not shown) that are driven to rotate by a drive device (not shown) are provided, and the powder container 18 on the transfer rollers is continuously and linearly fed from the inlets 14a and 16a to the outlets 14b and 16b. It is a tunnel type heating furnace (roller hearth kiln) that heats the powder in the powder container 18 at a predetermined temperature in a predetermined furnace atmosphere, for example, an inert gas atmosphere while transporting each.
　粉体容器１８は１個ずつ所定の間隔で連続的に搬送されてもよいが、本実施例では、粉体容器１８が横並びした状態で６個ずつ搬送されるようになっている。粉体容器１８は、匣鉢或いは鞘などと称される窯道具の一種であって、リチウムイオン電池の電極材料等の熱処理をする粉体を収容するためにたとえば角型容器形状を有し、アルミナ、ＳｉＣ、ムライト・コーディライト、ムライト、スピネルコーディライト、マグネシア、ジルコニアなどの耐熱性無機材料から構成されている。 The powder containers 18 may be continuously transported one by one at a predetermined interval, but in the present embodiment, six powder containers 18 are transported side by side in a row. The powder container 18 is a kind of kiln tool called a bowl or a sheath, and has, for example, a rectangular container shape for containing powder to be heat treated such as an electrode material of a lithium ion battery, It is composed of a heat-resistant inorganic material such as alumina, SiC, mullite cordierite, mullite, spinel cordierite, magnesia and zirconia.
　第１加熱炉１４の出口１４ｂと第２加熱炉１６の入口１６ａとの間には、粉体容器１８を所定間隔で一列に搬送する、第１出口側湾曲ローラコンベア２０、第１直線ローラコンベア２２、および第１入口側湾曲ローラコンベア２４が配置されている。第１加熱炉１４の出口１４ｂ側の第１加熱炉搬送ローラ１４ｃ上に搬出された６個の並列した粉体容器１８は、第１出口ハンドリング装置２６によって１個ずつ第１出口側湾曲ローラコンベア２０の始端上に移送されると、第１出口側湾曲ローラコンベア２０、第１直線ローラコンベア２２を経て、第１入口側湾曲ローラコンベア２４の終端へ搬送される。第１出口側湾曲ローラコンベア２０、第１直線ローラコンベア２２、および、第１入口側湾曲ローラコンベア２４は、第１搬送路を構成する。第１入口側湾曲ローラコンベア２４の終端へ到達した粉体容器１８は、第１入口ハンドリング装置２８によって、第２加熱炉１６の入口１６ａ側の第２加熱炉搬送ローラ１６ｃ上に６個が並列するように移送され、第２加熱炉１６内を通過させられる。 Between the outlet 14b of the first heating furnace 14 and the inlet 16a of the second heating furnace 16, the powder containers 18 are conveyed in a line at a predetermined interval, a first outlet side curved roller conveyor 20, a first linear roller conveyor. 22 and the first entrance side curved roller conveyor 24 are arranged. The six parallel powder containers 18 carried out on the first heating furnace conveying roller 14c on the outlet 14b side of the first heating furnace 14 are individually transferred by the first outlet handling device 26 to the first outlet side curved roller conveyor. When it is transferred to the start end of the roller 20, it is conveyed to the end of the first inlet curved roller conveyor 24 via the first outlet curved roller conveyor 20 and the first linear roller conveyor 22. The first exit-side curved roller conveyor 20, the first linear roller conveyor 22, and the first entrance-side curved roller conveyor 24 form a first transport path. Six of the powder containers 18 reaching the end of the first inlet side curved roller conveyor 24 are arranged in parallel on the second heating furnace conveying roller 16c on the inlet 16a side of the second heating furnace 16 by the first inlet handling device 28. And is passed through the second heating furnace 16.
　同様に、第２加熱炉１６の出口１６ｂと第１加熱炉１４の入口１４ａとの間には、第２出口側湾曲ローラコンベア３０、第２直線ローラコンベア３２、および第２入口側湾曲ローラコンベア３４が配置されている。第２加熱炉１６の出口１６ｂ側の第２加熱炉搬送ローラ１６ｃ上に搬出された６個の並列した粉体容器１８は、第２出口ハンドリング装置３６によって１個ずつ第２出口側湾曲ローラコンベア３０の始端上に移送されると、第２出口側湾曲ローラコンベア３０、第２直線ローラコンベア３２を経て、第２入口側湾曲ローラコンベア３４の終端へ搬送される。第２出口側湾曲ローラコンベア３０、第２直線ローラコンベア３２、および、第２入口側湾曲ローラコンベア３４は、第２搬送路を構成する。第２入口側湾曲ローラコンベア３４の終端へ到達した粉体容器１８は、第２入口ハンドリング装置３８によって、第１加熱炉１４の入口１４ａ側の第１加熱炉搬送ローラ１４ｃ上へ６個が並列するように移送され、第１加熱炉１４内を通過させられる。 Similarly, between the outlet 16b of the second heating furnace 16 and the inlet 14a of the first heating furnace 14, the second outlet side curved roller conveyor 30, the second linear roller conveyor 32, and the second inlet side curved roller conveyor. 34 are arranged. The six parallel powder containers 18 carried out onto the second heating furnace conveying roller 16c on the outlet 16b side of the second heating furnace 16 are transferred to the second outlet side curved roller conveyor one by one by the second outlet handling device 36. When it is transferred to the start end of the sheet 30, it is conveyed to the end of the second entrance side curved roller conveyor 34 via the second exit side curved roller conveyor 30 and the second linear roller conveyor 32. The second exit-side curved roller conveyor 30, the second linear roller conveyor 32, and the second entrance-side curved roller conveyor 34 form a second transport path. The powder containers 18 reaching the end of the second inlet side curved roller conveyor 34 are arranged in parallel by the second inlet handling device 38 onto the first heating furnace conveying rollers 14c on the inlet 14a side of the first heating furnace 14. And is passed through the first heating furnace 14.
　第１加熱炉１４の出口１４ｂと第２加熱炉１６の入口１６ａとの間の第１直線ローラコンベア２２には、粉体容器１８内の加熱処理後の粉体Ｐを砕く第１解砕装置４０、第１解砕装置４０により破砕された加熱処理後の粉体Ｐを粉体容器１８内から取り出す第１粉体容器反転装置４２、第１粉体容器反転装置４２により反転させられた後の粉体容器１８内を清掃する第１清掃装置４４および、第１清掃装置４４により清掃された粉体容器１８内へ新たな粉体Ｐを充填する第１粉体充填装置４６が、順次設けられている。同様に、第２加熱炉１６の出口１６ｂと第１加熱炉１４の入口１４ａとの間の第２直線ローラコンベア３２には、第１解砕装置４０、第１粉体容器反転装置４２、第１清掃装置４４および第１粉体充填装置４６と同様の、第２解砕装置５０、第２粉体容器反転装置５２、第２清掃装置５４および第２粉体充填装置５６が、順次設けられている。 The first linear roller conveyor 22 between the outlet 14b of the first heating furnace 14 and the inlet 16a of the second heating furnace 16 has a first crushing device for crushing the powder P after the heat treatment in the powder container 18. 40, a first powder container reversing device 42 for taking out the heat-treated powder P crushed by the first crushing device 40 from the powder container 18, and after being reversed by the first powder container reversing device 42 Firstly, a first cleaning device 44 for cleaning the inside of the powder container 18 and a first powder filling device 46 for filling the powder container 18 cleaned by the first cleaning device 44 with new powder P are sequentially provided. Has been. Similarly, in the second linear roller conveyor 32 between the outlet 16b of the second heating furnace 16 and the inlet 14a of the first heating furnace 14, the first crushing device 40, the first powder container reversing device 42, The second crushing device 50, the second powder container reversing device 52, the second cleaning device 54, and the second powder filling device 56, which are similar to the first cleaning device 44 and the first powder filling device 46, are sequentially provided. ing.
　粉体容器１８は、第１加熱炉１４の熱処理温度よりは低いが未冷却温度たとえば４００℃程度の比較的高温の状態のままで第１加熱炉１４の出口１４ｂから搬出された後、比較的高温の状態のまま、第１解砕装置４０、第１粉体容器反転装置４２、第１清掃装置４４および第１粉体充填装置４６を経て、第１加熱炉１４の出口１４ｂの近くに配置された第２加熱炉１６の入口１６ａへ短時間で搬送される。同様にして、粉体容器１８は、第２加熱炉１６の熱処理温度よりは充分に低いが未冷却温度たとえば４００℃程度の比較的高温の状態で第２加熱炉１６の出口１６ｂから搬出された後、比較的高温の状態のままで、第２加熱炉１６の出口１６ｂの近くに配置された第１加熱炉１４の入口１４ａへ短時間で搬送される。このようにして、粉体容器１８は比較的高温状態で粉体Ｐの取り出しおよび粉体Ｐの充填が行なわれるため、熱効率が高められるとともに、第１加熱炉１４および第２加熱炉１６において、加熱処理区間の前および後に設けられる予熱区間および冷却区間が縮小され、炉長が短縮されている。 After the powder container 18 is carried out from the outlet 14b of the first heating furnace 14 while being kept at a relatively high temperature such as an uncooled temperature, for example, about 400° C., which is lower than the heat treatment temperature of the first heating furnace 14, the powder container 18 is relatively discharged. It is arranged near the outlet 14b of the first heating furnace 14 through the first crushing device 40, the first powder container reversing device 42, the first cleaning device 44, and the first powder filling device 46 in the high temperature state. It is conveyed in a short time to the inlet 16a of the second heating furnace 16 thus prepared. Similarly, the powder container 18 was carried out from the outlet 16b of the second heating furnace 16 at a relatively high temperature such as an uncooled temperature, for example, about 400° C., which is sufficiently lower than the heat treatment temperature of the second heating furnace 16. After that, it is conveyed in a short time to the inlet 14a of the first heating furnace 14 arranged near the outlet 16b of the second heating furnace 16 in a relatively high temperature state. In this way, since the powder P is taken out and the powder P is filled in the powder container 18 at a relatively high temperature, the thermal efficiency is improved, and in the first heating furnace 14 and the second heating furnace 16, The preheating section and the cooling section provided before and after the heat treatment section are reduced, and the furnace length is shortened.
　第１粉体容器反転装置４２および第２粉体容器反転装置５２は同様に構成されているので、第１粉体容器反転装置４２について、以下に説明し、第２粉体容器反転装置５２の説明を省略する。 Since the first powder container reversing device 42 and the second powder container reversing device 52 have the same configuration, the first powder container reversing device 42 will be described below and the second powder container reversing device 52 will be described. The description is omitted.
　図２は、第１粉体容器反転装置４２を示す平面図である。図３は、第１直線ローラコンベア２２の搬送方向Ａの逆方向から見た第１粉体容器反転装置４２を示す正面図である。図４は、第１直線ローラコンベア２２の搬送方向Ａに直交する方向から見た第１粉体容器反転装置４２を示す側面図である。 FIG. 2 is a plan view showing the first powder container reversing device 42. FIG. 3 is a front view showing the first powder container reversing device 42 as seen from the direction opposite to the transport direction A of the first linear roller conveyor 22. FIG. 4 is a side view showing the first powder container reversing device 42 as seen from a direction orthogonal to the transport direction A of the first linear roller conveyor 22.
　第１直線ローラコンベア２２の搬送ローラ２２ａのうち、第１粉体容器反転装置４２が設けられる場所の複数本、本実施例では５本の搬送ローラ２２ａは、他の部分の搬送ローラ２２ａと略等間隔であるが、第１粉体容器反転装置４２のフレーム６０によって片持ち状に支持されている。なお、第１直線ローラコンベア２２の搬送ローラ２２ａは、複数本、本実施例では図４に示すように、５本の搬送ローラ２２ａ毎に設けられたローラ駆動モータ５７によりチェーン５８を介して回転駆動されるようになっている。 Of the transport rollers 22a of the first linear roller conveyor 22, a plurality of transport rollers 22a at the place where the first powder container reversing device 42 is provided, five transport rollers 22a in this embodiment, are substantially the same as the transport rollers 22a of other portions. Although equidistant, they are cantilevered by the frame 60 of the first powder container reversing device 42. The first linear roller conveyor 22 has a plurality of conveying rollers 22a, and in the present embodiment, as shown in FIG. 4, a roller driving motor 57 provided for every five conveying rollers 22a rotates through a chain 58. It is designed to be driven.
　図２に示すように、第１粉体容器反転装置４２は、第１直線ローラコンベア２２の搬送方向Ａと直交する方向に粉体容器１８を１個ずつ反転室６２内の２対の固定把持爪１２０ａおよび１２０ｂの上へ運び入れる前後移送装置６４と、反転室６２内の粉体容器１８を反転させる容器反転機構８０を備えている。容器反転機構８０は、第１直線ローラコンベア２２の搬送路上ではなく、第１直線ローラコンベア２２の搬送路から外れた位置で粉体容器１８を反転させる、アウトライン式の反転装置である。 As shown in FIG. 2, the first powder container reversing device 42 includes two pairs of fixed grips in the reversing chamber 62, one powder container 18 at a time in a direction orthogonal to the transport direction A of the first linear roller conveyor 22. It is provided with a front-rear transfer device 64 for carrying over the claws 120a and 120b, and a container reversing mechanism 80 for reversing the powder container 18 in the reversing chamber 62. The container reversing mechanism 80 is an outline type reversing device that reverses the powder container 18 at a position deviated from the conveyance path of the first linear roller conveyor 22 rather than on the conveyance path of the first linear roller conveyor 22.
　図３に示すように、前後移送装置６４は、前後シリンダ７０と互いに平行な一対の前後スライドロッド７４と各１対の容器受け部材７６とを備えている。前後シリンダ７０は、４つの上下方向案内装置６５によって上下方向に案内され且つ一対の昇降シリンダ６６によってフレーム６０に対して昇降させられる昇降フレーム６８上に設けられている。互いに平行な一対の前後スライドロッド７４は、昇降フレーム６８に固定された一対のスライドブッシュ７２によって第１直線ローラコンベア２２の搬送方向Ａに対して直角な水平方向に且つ搬送ローラ２２ａの間に位置するように案内され、前後シリンダ７０によって駆動される。各１対の容器受け部材７６は、一対の前後スライドロッド７４の先端部に上方に向かってそれぞれ突設され、粉体容器１８の底面を下から支持する。なお、前後移送装置６４は、粉体容器１８を１個ずつ反転室６２内の２対の固定把持爪１２０ａおよび１２０ｂの上へ送り込み、反転後の粉体容器１８を２対の固定把持爪１２０ａおよび１２０ｂの上から第１直線ローラコンベア２２上へ戻す移送装置として機能しており、カバー７８によって覆われている。 As shown in FIG. 3, the front-rear transfer device 64 includes a front-rear cylinder 70, a pair of front-rear slide rods 74 parallel to each other, and a pair of container receiving members 76. The front and rear cylinders 70 are provided on an elevating frame 68 which is vertically guided by four vertical direction guiding devices 65 and is vertically moved with respect to the frame 60 by a pair of elevating cylinders 66. The pair of front and rear slide rods 74, which are parallel to each other, are positioned by the pair of slide bushes 72 fixed to the elevating frame 68 in the horizontal direction perpendicular to the transport direction A of the first linear roller conveyor 22 and between the transport rollers 22a. And is driven by the front and rear cylinders 70. Each pair of container receiving members 76 is provided so as to project upward from the tip of the pair of front and rear slide rods 74, and supports the bottom surface of the powder container 18 from below. The front-rear transfer device 64 sends the powder containers 18 one by one onto the two pairs of fixed gripping claws 120a and 120b in the reversing chamber 62, and the powder containers 18 after the reversal are paired with the two fixed gripping claws 120a. And 120b, which functions as a transfer device for returning the first linear roller conveyor 22 from above, and is covered by a cover 78.
　図４に示すように、容器受け部材７６によって上方に持ち上げられる前に粉体容器１８を位置決めする容器位置決め装置７９が設けられている。容器位置決め装置７９は、水平な軸心まわりに回動可能に支持された回動軸７９ａと、回動軸７９ａを回動させるシリンダ７９ｂと、回動軸７９ａに固定された当接部材７９ｃとを備え、粉体容器１８の搬送方向Ａの移動時には当接部材７９ｃが粉体容器１８と干渉しない位置に回動させられるが、通過した次の粉体容器１８が反転室６２へ送り込まれる前には図４の破線に示す位置に下降して、粉体容器１８と当接して位置決めするようになっている。 As shown in FIG. 4, a container positioning device 79 that positions the powder container 18 before being lifted upward by the container receiving member 76 is provided. The container positioning device 79 includes a rotation shaft 79a that is rotatably supported around a horizontal axis, a cylinder 79b that rotates the rotation shaft 79a, and a contact member 79c that is fixed to the rotation shaft 79a. When the powder container 18 moves in the transport direction A, the contact member 79c is rotated to a position where it does not interfere with the powder container 18, but before the next powder container 18 that has passed through is fed into the reversing chamber 62. 4 is moved down to the position shown by the broken line in FIG. 4 and abutted on the powder container 18 for positioning.
　位置固定の側壁８２で囲まれている反転室６２には、開閉シリンダ８４によって開閉される開閉壁（シャッター）８６が設けられている。前後移送装置６４は、第１直線ローラコンベア２２（図１参照）により運ばれた粉体容器１８を、開閉壁８６が開かれているときに反転室６２内へ移送する。反転室６２内は、第１加熱炉１４内の雰囲気と同様の雰囲気に保持されている。 An opening/closing wall (shutter) 86 that is opened/closed by an opening/closing cylinder 84 is provided in the reversing chamber 62 surrounded by the side wall 82 fixed in position. The front-rear transfer device 64 transfers the powder container 18 carried by the first linear roller conveyor 22 (see FIG. 1) into the reversing chamber 62 when the opening/closing wall 86 is opened. The inside of the inversion chamber 62 is maintained in the same atmosphere as the atmosphere in the first heating furnace 14.
　図２に示すように、容器反転機構８０は、側壁８２を貫通し、反転室６２の外側に設けられた反転アクチュエータ８８により非反転位置と反転位置との間で、搬送方向Ａに平行な水平な回転軸線Ｃまわりに反転可能に設けられた一対の反転軸９０および９２と、反転室６２内に設けられ、各一対の反転軸９０および９２の室内側端部にそれぞれ固定され、粉体容器１８の反転に際して粉体容器１８の外周壁１８ａをその高さ方向から把持する一対のクランプ装置９４および９６と、一対のクランプ装置９４および９６を開操作して粉体容器１８の把持状態を解放するアンクランプ装置９８および１００とを備えている。 As shown in FIG. 2, the container reversing mechanism 80 penetrates the side wall 82 and is horizontally parallel to the transport direction A between the non-reversing position and the reversing position by the reversing actuator 88 provided outside the reversing chamber 62. A pair of reversing shafts 90 and 92 provided so as to be reversible around the rotation axis C, and provided inside the reversing chamber 62, and fixed to indoor end portions of the pair of reversing shafts 90 and 92, respectively. A pair of clamp devices 94 and 96 for gripping the outer peripheral wall 18a of the powder container 18 from the height direction when inverting 18 and a pair of clamp devices 94 and 96 are opened to release the gripped state of the powder container 18. Unclamping devices 98 and 100 are provided.
　一対の反転軸９０および９２は、反転室６２の隔壁８２の外壁面に断熱機能を有するように枠材により構成された一対の台枠１０１を介してそれぞれ設けられた反転軸支持装置１０２、１０４によって共通の回転軸線Ｃ上で所定の間隔を隔て且つその共通の回転軸線Ｃまわりに回転可能に支持されている。反転アクチュエータ８８は、反転室６２の外側面に固定され、断熱機能を有するように枠材により構成された台枠１０５と、隔壁８２の外壁面に台枠１０５を介してそれぞれ設けられた各一対の反転駆動軸支持装置１０６、１０８によって反転軸９０および９２と平行に回転可能にそれぞれ支持され、伝動ベルト１１０、１１２を介して反転軸９０および９２の室外側端部と動力伝達可能に連結された一対の反転駆動軸１１４、１１６と、反転駆動軸１１４、１１６の互いに近接する端部に連結されてそれら反転駆動軸１１４、１１６をそれぞれ回転駆動する空圧式のロータリアクチュエータ１１８とを、備えている。 The pair of reversing shafts 90 and 92 are provided on the outer wall surface of the partition wall 82 of the reversing chamber 62 via a pair of underframes 101 made of a frame material so as to have a heat insulating function, respectively. Are rotatably supported on the common rotation axis C at a predetermined interval and about the common rotation axis C. The reversing actuator 88 is fixed to the outer surface of the reversing chamber 62, and an underframe 105 formed of a frame material so as to have a heat insulating function, and a pair of each provided on the outer wall surface of the partition wall 82 through the underframe 105. Are rotatably supported in parallel with the reversing shafts 90 and 92 by the reversing drive shaft supporting devices 106 and 108, and are connected to the outdoor side ends of the reversing shafts 90 and 92 via power transmission belts 110 and 112 so as to be capable of transmitting power. A pair of reversing drive shafts 114 and 116, and a pneumatic rotary actuator 118 that is connected to the ends of the reversing drive shafts 114 and 116 that are close to each other and rotationally drives the reversing drive shafts 114 and 116, respectively. There is.
　図５は、図３のＶ－Ｖ視断面図であって、反転室６２内を拡大して示す拡大断面図である。図６は、クランプ装置９６を拡大して説明する図である。図５および図６において、クランプ装置９６は、反転軸９０室内側端部に固定された反転プレート１１９に固定された一対の固定把持爪１２０ａおよび１２０ｂと、一対の固定把持爪１２０ａおよび１２０ｂに対して開閉可能となるように反転プレート１１９に固設された把持爪回動軸１２１まわりに回動可能に支持された一対の可動把持爪１２２ａおよび１２２ｂと、固定把持爪１２０ａおよび１２０ｂの基端部と可動把持爪１２２ａおよび１２２ｂの基端部との間に与圧状態で設けられ、固定把持爪１２０ａおよび１２０ｂの先端部と可動把持爪１２２ａおよび１２２ｂの先端部との間を閉じる方向に付勢する一対のスプリング１２４ａおよび１２４ｂと、一対のスプリング１２４ａおよび１２４ｂを覆う耐熱樹脂製の蛇腹１２５とを、備えている。 FIG. 5 is a sectional view taken along line VV of FIG. 3 and is an enlarged sectional view showing the inside of the reversing chamber 62 in an enlarged manner. FIG. 6 is an enlarged view for explaining the clamp device 96. 5 and 6, the clamp device 96 has a pair of fixed gripping claws 120a and 120b fixed to the reversing plate 119 fixed to the inner end of the reversing shaft 90 and a pair of fixed gripping claws 120a and 120b. And a pair of movable gripping claws 122a and 122b rotatably supported around a gripping claw rotation shaft 121 fixed to the reversing plate 119 so that the fixed gripping claws 120a and 120b can be opened and closed. Is provided between the movable gripping claws 122a and 122b and the base ends of the movable gripping claws 122a and 122b in a pressurized state, and urges the tip ends of the fixed gripping claws 120a and 120b and the tip ends of the movable gripping claws 122a and 122b in a closing direction. A pair of springs 124a and 124b, and a bellows 125 made of heat-resistant resin that covers the pair of springs 124a and 124b.
　クランプ装置９４も、クランプ装置９６と同様に構成されているので、構成部品には同じ符号を付して説明を省略する。クランプ装置９４および９６は、粉体容器１８の外周壁１８ａをその高さ方向から把持した状態で、反転軸９０および９２と共に反転させられる。なお、固定把持爪１２０ａおよび１２０ｂには、粉体容器１８の底面を受けるために上面よりも凹んだ受け面１２６ａおよび１２６ｂが形成されており、反転中の粉体容器１８のずれ或いは脱落が防止されるようになっている。 Since the clamp device 94 is also configured similarly to the clamp device 96, the same reference numerals are given to the components and the description thereof will be omitted. The clamp devices 94 and 96 are reversed together with the reversing shafts 90 and 92 while holding the outer peripheral wall 18a of the powder container 18 from the height direction thereof. The fixed gripping claws 120a and 120b are formed with receiving surfaces 126a and 126b that are recessed from the upper surface to receive the bottom surface of the powder container 18, and prevent the powder container 18 from slipping or falling during inversion. It is supposed to be done.
　アンクランプ装置９８は、反転室６２を貫通した状態で、断熱機能を有するように枠材により構成された一対の台枠１２７（図２を参照）を介して側壁８２の外壁面に固定された軸受１２８（図２を参照）により回転可能に支持された一対のアンクランプ軸１２９と、反転室６２の室外側に設けられ、一対のアンクランプ軸１２９をクランプ位置とアンクランプ位置との間で回転させるアンクランプアクチュエータ１３０とを備え、アンクランプ位置にあるときにアンクランプ軸１２９とともに回転する係合片１３２が可動把持爪１２２ａおよび１２２ｂの基端部を連結する連結バー１３１を押圧し、スプリング１２４ａおよび１２４ｂの付勢力に抗してクランプ装置９４を開く。アンクランプ装置１００も、アンクランプ装置９８と同様に構成されているので、構成部品には同じ符号を付して説明を省略する。 The unclamping device 98 is fixed to the outer wall surface of the side wall 82 through a pair of underframes 127 (see FIG. 2) formed of a frame material so as to have a heat insulating function while penetrating the reversing chamber 62. A pair of unclamp shafts 129 rotatably supported by bearings 128 (see FIG. 2) and a pair of unclamp shafts 129 provided outside the reversing chamber 62 are provided between the clamp position and the unclamp position. An unclamp actuator 130 for rotating the unclamp actuator 130, and an engaging piece 132 that rotates together with the unclamp shaft 129 when in the unclamp position presses the connecting bar 131 connecting the proximal ends of the movable gripping claws 122a and 122b, and the spring. The clamp device 94 is opened against the biasing force of 124a and 124b. Since the unclamping device 100 is also configured similarly to the unclamping device 98, the same reference numerals are given to the components and the description thereof will be omitted.
　なお、反転室６２内の金属部品、たとえば一対の反転軸９０および９２、クランプ装置９４および９６の構成部品は、耐熱合金によって構成されている。また、一対の可動把持爪１２２ａおよび１２２ｂの先端部と、固定把持爪１２０ａおよび１２０ｂの先端部とは、それぞれセラミックス製であるか或いはセラミック溶射で覆われて、少なくともその先端の表面がセラミックスにより構成されており、粉体容器１８との接触によって不純物の発生が防止されている。また、スプリング１２４ａおよび１２４ｂも、耐熱合金から構成されている。 The metal parts in the reversing chamber 62, for example, the components of the pair of reversing shafts 90 and 92 and the clamp devices 94 and 96 are made of a heat-resistant alloy. Further, the tip end portions of the pair of movable gripping claws 122a and 122b and the tip end portions of the fixed gripping claws 120a and 120b are made of ceramics or are covered with ceramic spraying, and at least the surface of the tip end is made of ceramics. Therefore, the generation of impurities is prevented by the contact with the powder container 18. The springs 124a and 124b are also made of a heat resistant alloy.
　反転室６２は、側壁８２と、側壁８２の上側開口を閉じる天井壁１３４と、側壁８２の上側開口を閉じ、且つ粉体容器１８の反転により粉体容器１８から落下する粉体Ｐを受けて一時的に貯留する粉体貯留装置として機能するシャッタ１３６ａ付のホッパ１３６とで構成される隔壁により、気密に囲まれている。この反転室６２内には、第１加熱炉１４内と同様の不活性雰囲気を保持するために雰囲気ガスが導入されるようになっている。 The reversal chamber 62 closes the side wall 82, the ceiling wall 134 that closes the upper opening of the side wall 82, the upper opening of the side wall 82, and receives the powder P falling from the powder container 18 by reversing the powder container 18. It is hermetically enclosed by a partition wall composed of a hopper 136 with a shutter 136a that functions as a powder storage device for temporarily storing. Atmosphere gas is introduced into the inversion chamber 62 in order to maintain the same inert atmosphere as in the first heating furnace 14.
　上述のように、本実施例の第１加熱炉１４の第１粉体容器反転装置４２によれば、位置固定の隔壁（側壁８２、天井壁１３４、ホッパ１３６）により囲まれ、第１加熱炉１４から送り出された粉体容器１８を一時的に収容する反転室６２と、反転室６２の側壁（隔壁）８２を貫通し、反転室６２の外側に設けられた反転アクチュエータ８８により非反転位置と反転位置との間で水平な回転軸線まわりに反転可能に設けられた一対の反転軸９０、９２と、反転室６２内に設けられ、反転軸９０、９２の室内側端部に固定された固定把持爪１２０ａおよび１２０ｂと固定把持爪１２０ａおよび１２０ｂに対して開閉可能に設けられてスプリング１２４ａおよび１２４ｂの付勢力にしたがって固定把持爪１２０ａおよび１２０ｂの先端部との間を閉じる可動把持爪１２２ａおよび１２２ｂとを有し、粉体容器１８の外周壁１８ａを把持する複数のクランプ装置９４、９６と、反転室６２の側壁（隔壁）８２を貫通した状態で、反転室６２の外側に設けられたアンクランプアクチュエータ１３０により開位置と閉位置との間で回動可能に設けられたアンクランプ軸１２９を有し、開位置にあるときにアンクランプ軸１２９とともに回転する係合片１３２が可動把持爪１２２ａ、１２２ｂの基端部を押圧してスプリング１２４ａ、１２４ｂの付勢力に抗してクランプ装置９４、９６を開くアンクランプ装置９８、１００とを、含む。このように、比較的熱に弱い反転アクチュエータ８８およびアンクランプアクチュエータ１３０は反転室６２の外側に設けられているので、比較的高温の粉体容器１８を反転させて粉体容器１８内の粉体Ｐを取り出すことができる。また、加熱炉１４の後半部分において常温付近まで温度下降させる必要がなくなって加熱炉１４を短縮することができるので、生産性を高めようとしても、加熱炉１４などの熱設備が大型化することが抑制される。 As described above, according to the first powder container reversing device 42 of the first heating furnace 14 of this embodiment, the first heating furnace is surrounded by the partition walls (the side wall 82, the ceiling wall 134, and the hopper 136) whose positions are fixed. The reversing chamber 62 that temporarily accommodates the powder container 18 that has been sent out from the reversing chamber 14 and the side wall (partition wall) 82 of the reversing chamber 62, and the reversing actuator 88 provided outside the reversing chamber 62 moves the non-reversing position. A pair of reversing shafts 90 and 92 provided so as to be reversible about a horizontal rotation axis between the reversing position and a fixing provided inside the reversing chamber 62 and fixed to indoor end portions of the reversing shafts 90 and 92. Movable gripping claws 122a and 122b that are provided to be openable and closable with respect to the gripping claws 120a and 120b and the fixed gripping claws 120a and 120b and close between the gripping claws 120a and 120b and the tips of the fixed gripping claws 120a and 120b. And a plurality of clamping devices 94 and 96 for holding the outer peripheral wall 18a of the powder container 18 and a side wall (partition wall) 82 of the reversing chamber 62, which are provided outside the reversing chamber 62. The movable gripping claw 122a has an unclamp shaft 129 rotatably provided by a clamp actuator 130 between an open position and a closed position, and an engaging piece 132 that rotates together with the unclamp shaft 129 when in the open position. , 122b and unclamping devices 98, 100 that open the clamping devices 94, 96 against the biasing forces of the springs 124a, 124b by pressing the proximal ends. As described above, since the reversing actuator 88 and the unclamp actuator 130, which are relatively weak against heat, are provided outside the reversing chamber 62, the powder container 18 having a relatively high temperature is reversed to dispose the powder in the powder container 18. P can be taken out. Further, since it is not necessary to lower the temperature of the latter half of the heating furnace 14 to near room temperature, the heating furnace 14 can be shortened, so that the thermal equipment such as the heating furnace 14 becomes large in size even if the productivity is increased. Is suppressed.
　また、本実施例の第１粉体容器反転装置４２によれば、粉体容器１８は、加熱炉１４の熱処理温度よりは低い未冷却温度状態で加熱炉１４から取り出されたものである。このようにすれば、比較的高温の粉体容器１８を反転させて粉体容器１８内の粉体Ｐを取り出すことができる。また、加熱炉１４の後半部分において常温付近まで温度下降させる必要がなくなって加熱炉１４を短縮することができるので、生産性を高めようとしても、加熱炉１４などの熱設備が大型化することが抑制される。 Further, according to the first powder container reversing device 42 of the present embodiment, the powder container 18 is taken out from the heating furnace 14 in an uncooled temperature state lower than the heat treatment temperature of the heating furnace 14. By doing so, the powder P in the powder container 18 can be taken out by inverting the powder container 18 having a relatively high temperature. Further, since it is not necessary to lower the temperature of the latter half of the heating furnace 14 to near room temperature, the heating furnace 14 can be shortened, so that the thermal equipment such as the heating furnace 14 becomes large in size even if the productivity is increased. Is suppressed.
　また、本実施例の第１粉体容器反転装置４２によれば、反転室６２を囲む隔壁は、開閉可能な開閉壁を含む複数の側壁８２と、複数の側壁８２の上側開口を閉じる天井壁１３４と、複数の側壁８２の下側開口を閉じ、且つ粉体容器１８の反転により落下させられる粉体Ｐを受けて一時的に貯留するホッパ１３６とから気密に構成されている。これにより、反転室６２内において、比較的高温の粉体容器１８から粉体Ｐを取り出すことができる。 Further, according to the first powder container reversing device 42 of the present embodiment, the partition wall surrounding the reversing chamber 62 is a plurality of side walls 82 including openable and closable walls, and a ceiling wall that closes upper openings of the plurality of side walls 82. 134 and an hopper 136 that closes the lower openings of the plurality of side walls 82 and receives the powder P dropped by reversing the powder container 18 and temporarily stores the powder P. As a result, the powder P can be taken out from the powder container 18 having a relatively high temperature in the reversing chamber 62.
　また、本実施例の第１粉体容器反転装置４２によれば、加熱炉１４から送り出された粉体容器１８を搬送するローラコンベア（２４、２６、２８）と、ローラコンベアにより所定位置まで搬送された粉体容器１８を、ローラコンベア上の前記所定位置から開閉壁８６が開かれた反転室６２内の固定把持爪の上へ送り込む前後移送装置（送込装置）６４とを、さらに備える。これにより、粉体容器１８は、反転室６２内の固定把持爪１２０ａ、１２０ｂの上へ送り込まれるので、可動把持爪１２２ａ、１２２ｂを閉じることによって、反転軸９０、９２の室内側端部に設けられたクランプ装置９４、９６によって反転可能に把持される。 Further, according to the first powder container reversing device 42 of the present embodiment, the roller conveyor (24, 26, 28) for carrying the powder container 18 sent out from the heating furnace 14 and the predetermined position by the roller conveyor. The powder container 18 is further provided with a front-rear transfer device (sending device) 64 for sending the powder container 18 from the predetermined position on the roller conveyor onto a fixed gripping claw in the reversing chamber 62 in which the opening/closing wall 86 is opened. As a result, the powder container 18 is fed onto the fixed gripping claws 120a and 120b in the reversing chamber 62. Therefore, by closing the movable gripping claws 122a and 122b, the powder container 18 is provided at the indoor side end portions of the reversing shafts 90 and 92. The clamp devices 94 and 96 are clamped in a reversible manner.
　また、本実施例の第１粉体容器反転装置４２によれば、反転室６２内において粉体容器１８が反転させられるに際しては、反転室６２内が第１加熱炉１４内と同様の不活性ガス雰囲気に維持される。これにより、粉体容器１８内の粉体Ｐは、不活性ガス雰囲気内で取り出されるので、比較的高温の粉体が空気と反応することが抑制される。 In addition, according to the first powder container reversing device 42 of the present embodiment, when the powder container 18 is reversed in the reversing chamber 62, the inside of the reversing chamber 62 is inactive like the inside of the first heating furnace 14. Maintained in a gas atmosphere. As a result, the powder P in the powder container 18 is taken out in the inert gas atmosphere, so that the reaction of the powder having a relatively high temperature with the air is suppressed.
　また、本実施例の第１粉体容器反転装置４２によれば、固定把持爪１２０ａ、１２０ｂおよび可動把持爪１２２ａ、１２２ｂは、少なくともその先端の表面がセラミックスにより構成されている。このことから、固定把持爪１２０ａ、１２０ｂおよび可動把持爪１２２ａ、１２２ｂと粉体容器１８との接触に起因して発生する不純物が、粉体容器１８の反転により取り出される粉体Ｐに混入することが解消される。 Further, according to the first powder container reversing device 42 of the present embodiment, at least the surfaces of the tips of the fixed grip claws 120a and 120b and the movable grip claws 122a and 122b are made of ceramics. Therefore, impurities generated due to the contact between the fixed grasping claws 120a and 120b and the movable grasping claws 122a and 122b and the powder container 18 are mixed in the powder P taken out by reversing the powder container 18. Is eliminated.
　また、本実施例の第１粉体容器反転装置４２によれば、スプリング１２４ａ、１２４ｂは、耐熱樹脂製の蛇腹１２５により被覆された耐熱合金から構成されていることから、スプリング１２４ａ、１２４ｂの破損によって発生する金属粒子が、粉体容器１８の反転により取り出される粉体Ｐに混入することが解消される。 Further, according to the first powder container reversing device 42 of the present embodiment, since the springs 124a and 124b are made of the heat-resistant alloy covered with the bellows 125 made of heat-resistant resin, the springs 124a and 124b are damaged. It is possible to prevent the metal particles generated by mixing in the powder P taken out by reversing the powder container 18.
　また、本実施例によれば、入口から出口に向かう粉体容器１８の搬送方向が逆向きの状態で並列配置された一対の第１加熱炉１４および第２加熱炉１６から構成され、第１粉体容器反転装置４２は、第１加熱炉１４の出口１４ｂから第２加熱炉１６の入口１６ａへの第１搬送路（２０、２２、２４）に配置され、第２粉体容器反転装置５２は、第２加熱炉１６の出口１６ｂから第１加熱炉１４の入口１４ａへの第２搬送路（３０、３２、３４）に配置された第１粉体容器反転装置および第２粉体容器反転装置から構成されている。このことから、第１加熱炉１４の出口１４ｂから出された粉体容器１８は、それほど冷却されることなく、高温状態のままで第２加熱炉１６の入口１６ａへ入れられるので、小型の熱設備により高能率の熱処理が得られるとともに、熱損失が抑制される利点がある。 Further, according to the present embodiment, the powder container 18 from the inlet to the outlet is constituted by a pair of the first heating furnace 14 and the second heating furnace 16 which are arranged in parallel so that the powder container 18 is conveyed in the opposite direction. The powder container reversing device 42 is arranged in the first transfer path (20, 22, 24) from the outlet 14b of the first heating furnace 14 to the inlet 16a of the second heating furnace 16, and the second powder container reversing device 52 is provided. Is a first powder container reversing device and a second powder container reversing device arranged in the second transfer path (30, 32, 34) from the outlet 16b of the second heating furnace 16 to the inlet 14a of the first heating furnace 14. It is composed of devices. From this, the powder container 18 discharged from the outlet 14b of the first heating furnace 14 is not cooled so much and is put into the inlet 16a of the second heating furnace 16 in a high temperature state, so that a small heat is generated. There is an advantage that heat treatment with high efficiency can be obtained by the equipment and heat loss is suppressed.
　また、本実施例によれば、第１搬送路（２０、２２、２４）の第１粉体容器反転装置４２の下流側および第２搬送路（３０、３２、３４）の第２粉体容器反転装置５２の下流側には、粉体容器１８内に粉体Ｐを充填する第１粉体充填装置４６および第２粉体充填装置５６が、それぞれ配置されている。これにより、第１加熱炉１４の出口１４ｂから出された粉体容器１８は、冷却されることなく、高温状態のままで反転させられて熱処理された粉体Ｐが取り出され、次いで新たな粉体Ｐが充填されて第２加熱炉１６の入口１６ａへ入れられるので、小型の熱設備により高能率の熱処理が得られるとともに、熱損失が抑制される利点がある。 Further, according to the present embodiment, the second powder container on the downstream side of the first powder container reversing device 42 on the first transfer path (20, 22, 24) and on the second transfer path (30, 32, 34). A first powder filling device 46 and a second powder filling device 56 for filling the powder P into the powder container 18 are arranged downstream of the reversing device 52, respectively. As a result, the powder container 18 discharged from the outlet 14b of the first heating furnace 14 is not cooled but is inverted in the high temperature state, and the heat-treated powder P is taken out. Since the body P is filled and put into the inlet 16a of the second heating furnace 16, there is an advantage that a high-efficiency heat treatment can be obtained by a small-sized heat facility and heat loss is suppressed.
　以上、本発明を図面を参照して詳細に説明したが、本発明は更に別の態様でも実施でき、その主旨を逸脱しない範囲で種々変更を加え得るものである。 Although the present invention has been described in detail above with reference to the drawings, the present invention can be implemented in other modes, and various changes can be made without departing from the spirit of the invention.
　たとえば、前述の実施例では、並列配置された２本の第１加熱炉１４および第２加熱炉１６が用いられていたが、第１加熱炉１４または第２加熱炉１６が単独で配置されていてもよい。 For example, in the above-described embodiment, the two first heating furnaces 14 and the second heating furnaces 16 arranged in parallel are used, but the first heating furnace 14 or the second heating furnace 16 is arranged alone. May be.
　また、第１加熱炉１４の出口１４ｂから少なくとも第１粉体容器反転装置４２まで、第１加熱炉１４の炉内雰囲気と同じ雰囲気が維持されるように、第１加熱炉１４の出口１４ｂ側の第１加熱炉搬送ローラ１４ｃ、第１出口側湾曲ローラコンベア２０、第１直線ローラコンベア２２を覆う隔壁が設けられている。これにより、粉体容器１８は、第１加熱炉１４の出口１４ｂから少なくとも第１粉体容器反転装置４２までは、第１加熱炉１４の炉内雰囲気と同じ雰囲気下におかれるようになっている。また、第２加熱炉１６の出口１６ｂから少なくとも第２粉体容器反転装置５２までも同様である。 Further, from the outlet 14b of the first heating furnace 14 to at least the first powder container reversing device 42, the outlet 14b side of the first heating furnace 14 is maintained so that the same atmosphere as the furnace atmosphere of the first heating furnace 14 is maintained. A partition wall is provided to cover the first heating furnace transport roller 14c, the first outlet side curved roller conveyor 20, and the first linear roller conveyor 22. As a result, the powder container 18 is placed under the same atmosphere as the furnace atmosphere of the first heating furnace 14 from the outlet 14b of the first heating furnace 14 to at least the first powder container reversing device 42. There is. The same applies to the outlet 16b of the second heating furnace 16 to at least the second powder container inverting device 52.
　また、前述の実施例の反転室において、ホッパ１３６の下側にロールクラッシャなどの粉砕装置や冷却装置とメインホッパとが設けられていてもよい。この場合のホッパ１３６は、シャッタ１３６ａを備えない代わりに、メインホッパにシャッタが設けられる。この場合には、メインホッパが粉体貯留装置に対応する。 Further, in the reversing chamber of the above-described embodiment, a crushing device such as a roll crusher or a cooling device and a main hopper may be provided below the hopper 136. In this case, the hopper 136 does not include the shutter 136a, but the main hopper has a shutter. In this case, the main hopper corresponds to the powder storage device.
　なお、上述したのはあくまでの本発明の一実施例であり、本発明はその趣旨を逸脱しない範囲において種々変更が加えられるものである。 The above description is merely one embodiment of the present invention, and various modifications may be made to the present invention without departing from the spirit thereof.
　１４：第１加熱炉（加熱炉）　１４ａ：入口　１４ｂ：出口　１４ｃ：第１加熱炉搬送ローラ　１６：第２加熱炉（加熱炉）　１６ａ：入口　１６ｂ：出口　１６ｃ：第２加熱炉搬送ローラ　１８：粉体容器　１８ａ：外周壁　２０：第１出口側湾曲ローラコンベア（第１搬送路）　２２：第１直線ローラコンベア（第１搬送路）　２４：第１入口側湾曲ローラコンベア（第１搬送路）　３０：第２出口側湾曲ローラコンベア（第２搬送路）　３２：第２直線ローラコンベア（第２搬送路）　３４：第２入口側湾曲ローラコンベア（第２搬送路）　４２：第１粉体容器反転装置　４６：第１粉体充填装置　５２：第２粉体容器反転装置　５６：第２粉体充填装置　６２：反転室　６４：前後移送装置（送込装置）　８０：容器反転機構　８２：側壁（隔壁）　８６：開閉壁　８８：反転アクチュエータ　９０、９２：反転軸　９４、９６：クランプ装置　９８、１００：アンクランプ装置　１２０ａ、１２０ｂ：固定把持爪　１２１：把持爪回動軸　１２２ａ、１２２ｂ：可動把持爪　１２４ａ、１２４ｂ：スプリング　１２５：蛇腹　１２６ａ、１２６ｂ：受け面　１２９：アンクランプ軸　１３２：係合片　１３４：天井壁（隔壁）　１３６：ホッパ（粉体貯留装置）　Ｐ：粉体 14: 1st heating furnace (heating furnace) 14a: inlet 14b: outlet 14c: 1st heating furnace conveying roller 16: 2nd heating furnace (heating furnace) 16a: inlet 16b: outlet 16c: 2nd heating furnace conveying roller 18: Powder container 18a: Outer peripheral wall 20: First exit side curved roller conveyor (first conveying path) 22: First linear roller conveyor (first conveying path) 24: First inlet side curved roller conveyor (first conveying path) 30: 2nd exit side curved roller conveyor (2nd conveyance path) 32: 2nd linear roller conveyor (2nd conveyance path) 34: 2nd entrance side curved roller conveyor (2nd conveyance path) 42: 1st powder container Inversion device 46: First powder filling device 52: Second powder container inversion device 56: Second powder filling device 62: Inversion chamber 64: Front-rear transfer device (feeding device) 80: Container inversion mechanism 82: Side wall ( Partition wall) 86: open/close wall 88: reversing actuator 90, 92: reversing shaft 94, 96: clamping device 98, 100: unclamping device 120a, 120b: fixed gripping claw 121: gripping claw rotating shaft 122a, 122b: movable gripping claw 124a, 124b: Spring 125: Bellows 126a, 126b: Receiving surface 129: Unclamp shaft 132: Engaging piece 134: Ceiling wall (partition wall) 136: Hopper (powder storage device) P: Powder

Claims (9)

  1. 　粉体を収容した状態で加熱炉内を連続的に搬送された粉体容器内から加熱処理後の粉体を取り出すために前記粉体容器を反転させる加熱炉用粉体容器反転装置であって、
    　位置固定の隔壁により囲まれ、前記加熱炉から送り出された前記粉体容器を一時的に収容する反転室と、
    　前記隔壁を貫通し、前記反転室の外側に設けられた反転アクチュエータにより非反転位置と反転位置との間で水平な回転軸線まわりに反転可能に設けられた一対の反転軸と、
    　前記反転室内に設けられ、前記反転軸の室内側端部に固定された固定把持爪と前記固定把持爪に対して開閉可能に設けられてスプリングの付勢力にしたがって前記固定把持爪の先端部との間を閉じる可動把持爪とを有し、前記粉体容器の外周壁を把持する複数のクランプ装置と、
    　前記隔壁を貫通した状態で、前記反転室の外側に設けられたアンクランプアクチュエータによりアンクランプ位置とクランプ位置との間で回動可能に設けられたアンクランプ軸を有し、前記アンクランプ位置にあるときに前記アンクランプ軸とともに回転する係合片が前記可動把持爪の基端部を押圧して前記スプリングの付勢力に抗して前記クランプ装置を開くアンクランプ装置とを、含む
    　ことを特徴とする加熱炉用粉体容器反転装置。     A powder container reversing device for a heating furnace, which reverses the powder container in order to take out the powder after the heat treatment from the powder container which is continuously conveyed in the heating furnace while containing the powder. ,
    An inversion chamber that is surrounded by a partition wall that is fixed in position and that temporarily stores the powder container that is sent out from the heating furnace,
    A pair of reversing shafts penetrating the partition wall and reversibly provided around a horizontal rotation axis between a non-reversing position and a reversing position by a reversing actuator provided outside the reversing chamber,
    A fixed gripping claw that is provided in the reversing chamber and is fixed to the indoor end of the reversing shaft, and a tip end portion of the fixed gripping claw that is provided so as to be openable and closable with respect to the fixed gripping claw according to the biasing force of a spring. A plurality of clamping devices for holding the outer peripheral wall of the powder container,
    An unclamp shaft rotatably provided between an unclamp position and a clamp position by an unclamp actuator provided outside the reversing chamber in a state of penetrating the partition wall, And an unclamp device that opens the clamp device against the urging force of the spring by the engagement piece that rotates together with the unclamp shaft pressing the proximal end portion of the movable grip claw at a certain time. A powder container reversing device for a heating furnace.
  2. 　前記粉体容器は、前記加熱炉の熱処理温度よりは低い未冷却温度状態で前記加熱炉から取り出されたものである
    　ことを特徴とする請求項１の加熱炉用粉体容器反転装置。     The powder container reversing device for a heating furnace according to claim 1, wherein the powder container is taken out from the heating furnace in an uncooled temperature state lower than a heat treatment temperature of the heating furnace.
  3. 　前記反転室を囲む前記隔壁は、前記開閉可能な開閉壁を含む複数の側壁と、前記複数の側壁の上側開口を閉じる天井壁と、前記複数の側壁の下側開口を閉じ、且つ前記粉体容器の反転により落下させられる粉体を受けて一時的に貯留する粉体貯留装置とから気密に構成されている
    　ことを特徴とする請求項１または２の加熱炉用粉体容器反転装置。     The partition wall that surrounds the inversion chamber has a plurality of side walls including the openable and closable opening and closing wall, a ceiling wall that closes upper openings of the plurality of side walls, a lower opening of the plurality of side walls, and the powder. The powder container reversing device for a heating furnace according to claim 1 or 2, wherein the powder container reversing device is airtight from a powder storage device that temporarily receives and stores powder that is dropped by reversing the container.
  4. 　前記加熱炉から送り出された前記粉体容器を搬送するローラコンベアと、前記ローラコンベアにより所定位置まで搬送された前記粉体容器を、前記ローラコンベア上の前記所定位置から前記開閉壁が開かれた前記反転室内の前記固定把持爪の上へ送り込む送込装置とを、備える
    　ことを特徴とする請求項３の加熱炉用粉体容器反転装置。     A roller conveyor that conveys the powder container sent from the heating furnace, and the powder container that has been conveyed to a predetermined position by the roller conveyor, the opening/closing wall is opened from the predetermined position on the roller conveyor. The powder container reversing device for a heating furnace according to claim 3, further comprising a feeding device that feeds the fixed grasping claw in the reversing chamber.
  5. 　前記反転室内において前記粉体容器が反転させられるに際しては、前記反転室内が前記加熱炉内と同様の不活性ガス雰囲気に維持される
    　ことを特徴とする請求項１から４のいずれか１の加熱炉用粉体容器反転装置。     When the powder container is inverted in the inversion chamber, the inversion chamber is maintained in the same inert gas atmosphere as in the heating furnace. The heating according to any one of claims 1 to 4, wherein Reversing device for powder container for furnace.
  6. 　前記固定把持爪および可動把持爪は、少なくともその先端の表面がセラミックスにより構成されている
    　ことを特徴とする請求項１から５のいずれか１の加熱炉用粉体容器反転装置。     The powder container reversing device for a heating furnace according to any one of claims 1 to 5, wherein at least the surface of the tip of each of the fixed gripping claw and the movable gripping claw is made of ceramics.
  7. 　前記スプリングは、耐熱樹脂製の蛇腹により被覆された耐熱合金から構成されている
    　ことを特徴とする請求項１から６のいずれか１の加熱炉用粉体容器反転装置。     The powder container reversing device for a heating furnace according to any one of claims 1 to 6, wherein the spring is made of a heat-resistant alloy covered with a bellows made of heat-resistant resin.
  8. 　前記加熱炉は、入口から出口に向かう前記粉体容器の搬送方向が逆向きの状態で並列配置された一対の第１加熱炉および第２加熱炉を備え、
    　前記加熱炉用粉体容器反転装置は、前記第１加熱炉の出口から前記第２加熱炉の入口への第１搬送路および前記第２加熱炉の出口から前記第１加熱炉の入口への第２搬送路にそれぞれ配置された第１粉体容器反転装置および第２粉体容器反転装置である
    　ことを特徴とする請求項１から７のいずれか１の加熱炉用粉体容器反転装置。     The heating furnace includes a pair of a first heating furnace and a second heating furnace which are arranged in parallel in a state where the powder containers from the inlet to the outlet are conveyed in opposite directions.
    In the powder container reversing device for the heating furnace, the first conveying path from the outlet of the first heating furnace to the inlet of the second heating furnace and the outlet of the second heating furnace to the inlet of the first heating furnace are provided. The powder container reversing device for a heating furnace according to any one of claims 1 to 7, wherein the powder container reversing device is a first powder container reversing device and a second powder container reversing device which are respectively arranged in the second transport path.
  9. 　前記第１搬送路の前記第１粉体容器反転装置の下流側および前記第２搬送路の前記第２粉体容器反転装置の下流側には、前記粉体容器内に粉体を充填する第１粉体充填装置および第２粉体充填装置が、それぞれ配置されている
    　ことを特徴とする請求項８の加熱炉用粉体容器反転装置。     The powder container is filled with powder on the downstream side of the first powder container reversing device on the first transport path and on the downstream side of the second powder container reversing device in the second transport path. The powder container reversing device for a heating furnace according to claim 8, wherein the first powder filling device and the second powder filling device are respectively arranged.
PCT/JP2019/034866 2018-11-27 2019-09-04 Powder container inverting device for heating furnace WO2020110405A1 (en)

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