WO2020110405A1 - 加熱炉用粉体容器反転装置 - Google Patents

加熱炉用粉体容器反転装置 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
English (en)
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/zh
Priority to DE112019005895.9T priority patent/DE112019005895T5/de
Priority to KR1020217013741A priority patent/KR20210093878A/ko
Publication of WO2020110405A1 publication Critical patent/WO2020110405A1/ja

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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.

Landscapes

  • 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)
PCT/JP2019/034866 2018-11-27 2019-09-04 加熱炉用粉体容器反転装置 WO2020110405A1 (ja)

Priority Applications (3)

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CN201980077859.3A CN113167533B (zh) 2018-11-27 2019-09-04 加热炉用粉体容器翻转装置
DE112019005895.9T DE112019005895T5 (de) 2018-11-27 2019-09-04 Pulverbehälterumkehrvorrichtung für Erwärmungsofen
KR1020217013741A KR20210093878A (ko) 2018-11-27 2019-09-04 가열로용 분체 용기 반전 장치

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JP2018221728A JP6532588B1 (ja) 2018-11-27 2018-11-27 加熱炉用粉体容器反転装置

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JP6978623B1 (ja) * 2021-03-26 2021-12-08 株式会社ノリタケカンパニーリミテド 加熱炉の搬送装置
JP6978622B1 (ja) * 2021-03-26 2021-12-08 株式会社ノリタケカンパニーリミテド 加熱炉の被加熱物搬送装置
JP7058366B1 (ja) * 2021-09-17 2022-04-21 株式会社ノリタケカンパニーリミテド 被焼成物取り出し装置

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JP7041302B1 (ja) 2021-03-26 2022-03-23 株式会社ノリタケカンパニーリミテド 連続焼成システム
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WO2023233961A1 (ja) * 2022-05-31 2023-12-07 日本碍子株式会社 熱処理システム及び熱処理炉が備える雰囲気置換構造

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JP7058366B1 (ja) * 2021-09-17 2022-04-21 株式会社ノリタケカンパニーリミテド 被焼成物取り出し装置

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CN113167533B (zh) 2023-03-14
CN113167533A (zh) 2021-07-23
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DE112019005895T5 (de) 2021-08-05
JP2020085367A (ja) 2020-06-04

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