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WO2014103927A1 - Mécanisme de transport et four de traitement thermique le comportant - Google Patents

Mécanisme de transport et four de traitement thermique le comportant Download PDF

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Publication number
WO2014103927A1
WO2014103927A1 PCT/JP2013/084240 JP2013084240W WO2014103927A1 WO 2014103927 A1 WO2014103927 A1 WO 2014103927A1 JP 2013084240 W JP2013084240 W JP 2013084240W WO 2014103927 A1 WO2014103927 A1 WO 2014103927A1
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WO
WIPO (PCT)
Prior art keywords
tube
transport direction
pipe
rail
heat
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2013/084240
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English (en)
Japanese (ja)
Inventor
南大介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2014554410A priority Critical patent/JPWO2014103927A1/ja
Publication of WO2014103927A1 publication Critical patent/WO2014103927A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F27B9/14—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
    • F27B9/22—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 on rails, e.g. under the action of scrapers or pushers

Definitions

  • the present invention relates to a transport mechanism and a heat treatment furnace for transporting a material to be heat treated. Specifically, for example, a heat treatment furnace for performing heat treatment by passing a material to be heat treated such as an unfired ceramic laminate through the furnace.
  • the present invention relates to a transport mechanism used and a heat treatment furnace equipped with the transport mechanism.
  • an unfired ceramic electronic component (an object to be heat treated) (not shown) is placed on the base plate 102. Then, heat treatment is performed while the base plate 102 is pushed by a pusher device (not shown) and moved on the floor plate (rail) 103 from the entrance to the exit of the furnace body 101. There is a tunnel furnace.
  • the end of the pipe on the downstream side in the transport direction is lower than the end of the pipe in the transport direction, and the heat-treated material that has moved on the pipe on the upstream side in the transport direction is located on the downstream side in the transport direction.
  • the plurality of opposed end portions formed by continuously arranging the plurality of tubes at least a portion between the opposed end portions is related to the temperature inside the furnace body. Even when the tube has the largest thermal expansion, the opposing end portions come into contact with each other and are pressed against each other, so that the rail is provided with a gap that can prevent deformation that hinders the transfer of the heat-treated object. It is characterized by
  • “at least a part of the opposed end portions are in contact with each other even when the tube is subjected to the largest thermal expansion in relation to the temperature inside the furnace body.
  • a gap is provided in the rail to prevent deformation that hinders the conveyance of the heat-treated object by pressing together '', as seen from the direction perpendicular to the axial direction of the tube.
  • one of the end of the pipe on the upstream side in the transport direction and the end of the pipe on the downstream side in the transport direction has entered the inside of the end of the other pipe, This is a broad concept including a case where there is a space (gap) between the two so that one can further enter the other.
  • one of the pipes on the upstream side in the transport direction and the pipes on the downstream side in the transport direction is opened. It is preferable that the end portion of the other tube enters inside the end portion.
  • the tube is a cylindrical tube having a circular cross-sectional shape in a direction orthogonal to the longitudinal direction, and when viewed from the opposite ends of the pair of tubes, the upstream side in the transport direction
  • the end of the tube is open, the end of the tube on the downstream side in the transport direction is provided with a substantially hemispherical bottom, and when the tube is thermally expanded, the substantially hemispherical shape of the tube on the downstream side in the transport direction
  • an end portion having a bottom portion is configured to enter inside an open end portion of the pipe on the upstream side in the transport direction.
  • the rail deformation due to the thermal expansion of the tube can be suppressed and prevented.
  • a rail since it becomes possible to comprise a rail using the tube made from a ceramic provided with the substantially hemispherical bottomed structure used for the protection tube etc. of a thermometer, for example by the said structure, a rail The cost can be reduced as compared with the case where a tube for forming the tube is separately manufactured.
  • the tube is a cylindrical tube having a circular cross-sectional shape in a direction orthogonal to the longitudinal direction, and the opposite ends of the pair of tubes are viewed.
  • the end of the pipe on the upstream side in the transport direction is provided with a tapered shape on the inner peripheral surface side so that the inner diameter decreases toward the upstream side in the transport direction, and the end of the pipe on the downstream side in the transport direction
  • the end portion is provided with a tapered shape on the outer peripheral surface side so that the outer diameter becomes smaller toward the upstream side in the transport direction, and when the tube is thermally expanded, the open end of the tube on the upstream side in the transport direction It is preferable that the end portion of the pipe on the downstream side in the transport direction is inserted inside.
  • tube is a square tube shaped pipe
  • the heat treatment furnace of the present invention is A heat treatment furnace for continuously heat-treating an object to be heat-treated by conveying a heat treatment region inside the furnace body in a predetermined conveyance direction,
  • the transport mechanism of the present invention is provided,
  • the heat treatment object is configured to be transported in a predetermined direction by the transport mechanism.
  • the transport mechanism of the present invention is configured as described above, and when the end portions facing each other of a pair of tubes adjacent to each other in the transport direction among a plurality of tubes constituting the rail are subjected to heat treatment of the rail.
  • the end of the tube on the downstream side in the transport direction is lower than the end of the tube on the upstream side in the transport direction, and is formed by continuously arranging a plurality of tubes.
  • the plurality of opposed end portions at least some of the opposed end portions are in contact with each other even when the tube has the largest thermal expansion due to the temperature inside the furnace body.
  • the rail is configured by a plurality of tubes, even when the rail is deformed by thermal creep, for example, the position in the height direction of the member supporting the rail is adjusted to a specific position.
  • the rail level can be adjusted by adjusting the height of the tube. As a result, the object to be heat-treated can be transported stably, reliably and smoothly.
  • FIG. 1 is a side cross-sectional view showing a configuration of a heat treatment furnace 10 provided with a transfer mechanism according to an embodiment (first embodiment) of the present invention
  • FIG. 2 is a configuration of rails of the transfer mechanism used in the heat treatment furnace 10.
  • the heat treatment furnace 10 is pushed into a furnace body 1 (furnace body) 2 made of a heat insulating material 1a by a heating means (heater) 3 and a pusher (not shown).
  • 5 and a plurality of support members 6 made of refractory bricks that support the rail 5.
  • the above-described pusher (not shown), the rail 5 including a plurality of pipes 15 (15a, 15b), and the like constitute the transport mechanism in the present invention.
  • some of the support members 6a are supported by a support column 7 configured to be vertically movable by a driving unit (not shown) so as to be movable up and down.
  • the level of the rail 5 can be adjusted by moving the support column 7 in the vertical direction as necessary (see FIG. 1).
  • the tube 15 constituting the rail 5 is a cylindrical tube having a circular cross-sectional shape in a direction orthogonal to the longitudinal direction, the one end portion 16 being open, and the other end portion 17 being a hemisphere. It has a structure with a shaped bottom (see FIG. 2).
  • the configuration of the rail 5 will be described in more detail.
  • ends of a pair of tubes 15 (tubes 15a and 15b in FIGS. 1 and 2) adjacent to each other in the transport direction A are opposed to each other.
  • the pipe 15 (15a) on the upstream side in the transport direction (opening downstream end of the pipe 15a in the transport direction) 16 and the substantially hemispherical bottom of the pipe 15 (15b) on the downstream side in the transport direction are arranged so as to oppose each other (end portion on the upstream side in the transport direction in the pipe 15b) 17.
  • tube 15 provided with the substantially hemispherical bottom part as mentioned above, the pipe
  • tube 15 is arrange
  • the gap G absorbs the deformation even when the pipe 15 is deformed to the greatest extent due to thermal expansion, the pipes 15 come into contact with each other and press each other, and the rail 5 hinders the conveyance of the heat-treated object 4. This is provided to prevent such deformation.
  • the pipe 15 (15a) on the upstream side in the transport direction has an open end (the downstream end on the transport direction in the pipe 15a) 16 inside the hemispherical shape of the pipe 15 (15b) on the downstream side in the transport direction. Since the end portion (the upstream end portion in the conveying direction in the pipe 15b) 17 having a bottom portion is configured to enter, the furnace temperature increases in the heat treatment process, and the pipe 15 constituting the rail 5 is thermally expanded. In addition, it is possible to suppress and prevent the pipe 15 (15a, 15b) constituting the rail 5 from being subjected to stress (pressing force) that greatly deforms the rail 5, and to stabilize the object to be heat treated. Can be transported.
  • stress pressing force
  • tube 15 (15a, 15) is provided with the hemispherical bottom part, it is provided with the shape curved below.
  • the end portion 17 of the pipe 15 (15b) on the downstream side in the transport direction is higher than the upper part of the open end portion 16 of the pipe 15 (15a) on the upstream side in the transport direction. Since the upper part is located at a lower position, the object to be heat-treated 4 that has moved on the pipe 15 (15a) on the upstream side in the transport direction is transferred to the end 17 of the pipe 15 (15b) on the downstream side in the transport direction. Since it can be transferred onto the pipe 15 (15b) on the downstream side in the conveying direction without causing a collision, the heat-treated object 4 can be smoothly conveyed on the rail 5 to perform a stable and good heat treatment. it can.
  • the support column is also provided. It is possible to adjust the level of the rail 5 by adjusting the height of the support member 6 that supports a predetermined pipe 15 among the plurality of pipes 15 constituting the rail 5 by operating 7 in the vertical direction. Thus, the object to be heat treated 4 can be stably conveyed.
  • a heat treatment furnace capable of reliably and smoothly transporting the object to be heat treated 4 without requiring a complicated configuration and capable of performing stable heat treatment can be realized. can do.
  • FIG. 3 is a cross-sectional view showing a configuration of a main part configuration (rail of the transfer mechanism) of a heat treatment furnace 10A provided with a transfer mechanism according to another embodiment (Embodiment 2) of the present invention.
  • the end of the tube 15 (15a) on the upstream side in the transport direction (the end in the transport direction downstream side of the tube 15a) 16 is upstream in the transport direction (that is, on the opposite side to the transport direction (transport direction) A of the object to be heat treated).
  • the end of the pipe 15 (15b) on the downstream side in the transport direction (the upstream end in the transport direction in the pipe 15b) 17 is provided on the upstream side in the transport direction (that is, heat-treated).
  • a pipe 15 (15a, 15b) having a structure with a tapered shape such that the outer diameter becomes smaller in the conveyance direction (moving direction) A of the object) and the pipe constituting the rail 5 is used. 15 was thermally expanded
  • the pipe 15 (15b) on the downstream side in the transport direction is disposed on the inner side of the end portion (the downstream end portion in the transport direction in the pipe 15a) 16 of the pipe 15 (15a) on the upstream side in the transport direction. ),
  • An end portion (upstream end portion in the conveying direction in the pipe 15b) 17 having a tapered shape on the outer peripheral side can be inserted.
  • each pipe 15 is arranged in such a manner that a gap G exists between the pair of pipes 15 (15a, 15b).
  • the gap G absorbs the deformation even when the pipe 15 is deformed to the greatest extent due to thermal expansion, the pipes 15 come into contact with each other and press each other, and the rail 5 hinders the conveyance of the heat-treated object 4. It is provided to prevent such deformation.
  • the pipe 15 (15a) on the upstream side in the transport direction has a tapered shape on the inner peripheral side.
  • Part 17 enters. Therefore, it becomes possible to suppress and prevent the pressing force that greatly deforms the rail 5 between the pipes 15 (15a, 15b) constituting the rail 5, and to prevent the deformation of the rail 5,
  • the to-be-processed object 4 can be conveyed reliably.
  • the end 17 of the pipe 15 (15b) on the downstream side in the transport direction of the pair of pipes 15a and 15 has an outer diameter that decreases in the direction opposite to the transport direction (movement direction) A of the object to be heat treated. Since the taper shape as described above is provided, the pipe 15 (on the downstream side in the transport direction with respect to the upper side portion of the end portion 16 of the pipe 15 (15a) on the upstream side in the transport direction on the side of the rail 5 on which the object to be heat-treated comes in contact Since the upper part of the end portion 17 of 15b) is at a lower position, the heat-treated object 4 that has moved on the pipe 15 (15a) on the upstream side in the transport direction is transferred to the pipe 15 (15b) on the downstream side in the transport direction. It is possible to shift to the pipe 15 (15b) on the downstream side in the conveying direction without causing the end 17 to collide, and it is possible to smoothly convey on the rail 5 and perform stable good heat treatment.
  • the rail 5 is constituted by the plurality of tubes 15 as described above, the rail 5 formed by the plurality of tubes 15 is deformed by thermal creep. Even if it occurs, the height of the support member (not shown in FIG. 3) for holding the arbitrary pipe 15 is adjusted by moving the support (not shown in FIG. 3) in the vertical direction. The level of the rail 5 can be adjusted.
  • FIG. 4 is a cross-sectional view illustrating a configuration of a main part configuration (rail of the transfer mechanism) of a heat treatment furnace 10B provided with a transfer mechanism according to still another embodiment (Embodiment 3) of the present invention.
  • the heat treatment furnace 10B of the third embodiment is the same as that of the first embodiment except that the configuration of the rail 5 (specifically, the configuration of the pipe 15 configuring the rail 5) is different from that of the first embodiment.
  • a configuration similar to that of the heat treatment furnace 10 is provided.
  • the parts denoted by the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding parts.
  • the end 15 of the pipe 15 (15a) on the upstream side in the transport direction (the end in the downstream side of the pipe 15a in the transport direction) 16 has a shape obtained by cutting the pipe 15 in a direction perpendicular to the axial direction and has the same outer diameter up to the end surface.
  • the upper portion of the end portion (upstream end portion in the transport direction in the tube 15b) 17 of the pipe 15 (15b) on the downstream side in the transport direction has an upstream side in the transport direction (i.e. A tube provided with an inclined portion 18 that is inclined downward in the transport direction (moving direction A) is used.
  • the pipe 15 (15a, 15b) has the largest thermal expansion between the end 16 of the pipe 15 (15a) upstream in the transport direction and the end 17 of the pipe 15 (15b) downstream in the transport direction.
  • a gap G is provided so that the rail 5 does not deform so as to hinder the conveyance of the object to be heat-treated 4.
  • the upper part of the end portion 17 of the pipe 15 (15b) on the downstream side in the transport direction has an upstream side in the transport direction (that is, the transport direction A of the material to be heat treated).
  • An inclined portion 18 that is downwardly inclined toward the opposite side) is provided, and on the side of the rail 5 on which the object to be heat-treated comes into contact, the upper portion of the end portion 16 of the pipe 15 (15a) on the upstream side in the transport direction. Since the upper portion of the end portion 17 of the pipe 15 (15b) on the downstream side in the transport direction is at a lower position, the workpiece 4 that has moved on the pipe 15 (15a) on the upstream side in the transport direction is moved in the transport direction. Since it can be shifted onto the pipe 15 (15b) on the downstream side in the transport direction without colliding with the end portion 17 of the downstream pipe 15 (15b), the rail 5 is smoothly transported, stably, Good heat treatment can be performed.
  • the rail 5 is constituted by the plurality of tubes 15 as described above, the rail 5 formed by the plurality of tubes 15 is deformed by thermal creep. Even if it occurs, the height of the support member (not shown in FIG. 3) for holding the arbitrary pipe 15 is adjusted by moving the support (not shown in FIG. 3) in the vertical direction. The level of the rail 5 can be adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

L'invention concerne : un mécanisme de transport qui permet à des articles devant subir un traitement thermique d'être transportés en douceur à l'intérieur d'un four ; et un four de traitement thermique. Un rail (5) est formé en disposant de façon continue une pluralité de tubes. Sur le côté du rail avec lequel les articles devant subir un traitement thermique sont en contact, une partie supérieure d'une extrémité (17) d'un tube (15b) sur le côté en aval dans la direction de transport est positionnée à une position plus basse que la partie supérieure d'une extrémité (16) d'un tube (15a) sur le côté en amont dans la direction de transport, lorsqu'on observe par rapport aux extrémités d'une paire de tubes, qui sont adjacents dans la direction de transport, de la pluralité de tubes constituant le rail, lesdites extrémités se faisant face l'une l'autre. Ainsi, un article devant subir un traitement thermique (4), qui a été transporté sur le tube (15a) sur le côté en amont dans la direction de transport, est capable de se déplacer sur le tube (15b) sur le côté en aval dans la direction de transport sans collision avec l'extrémité du tube (15b) sur le côté en aval dans la direction de transport. De plus, un jeu (G), qui est susceptible d'empêcher le rail (5) de se déformer par contrainte lorsque les tubes ont subi une dilatation thermique maximale, est disposé entre au moins certaines des extrémités faisant face parmi la pluralité d'extrémités faisant face formées en disposant de façon continue la pluralité de tubes.
PCT/JP2013/084240 2012-12-28 2013-12-20 Mécanisme de transport et four de traitement thermique le comportant Ceased WO2014103927A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014554410A JPWO2014103927A1 (ja) 2012-12-28 2013-12-20 搬送機構およびそれを備えた熱処理炉

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012286847 2012-12-28
JP2012-286847 2012-12-28

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Publication Number Publication Date
WO2014103927A1 true WO2014103927A1 (fr) 2014-07-03

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PCT/JP2013/084240 Ceased WO2014103927A1 (fr) 2012-12-28 2013-12-20 Mécanisme de transport et four de traitement thermique le comportant

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WO (1) WO2014103927A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108010A (en) * 1977-03-03 1978-09-20 Aeg Elotherm Gmbh Induction type continuous furnace to heat metal machine substance
JPS6060698U (ja) * 1983-09-30 1985-04-26 第一鍛造株式会社 鍛造用電気炉におけるガイドレ−ル
JPS63169328A (ja) * 1986-12-30 1988-07-13 Riken Corp 金属加熱炉用ガイドレ−ル
JPH0460535U (fr) * 1990-09-28 1992-05-25
JPH0658678A (ja) * 1992-08-06 1994-03-04 Mitsui Mining & Smelting Co Ltd レールレンガ
JPH11302722A (ja) * 1998-04-17 1999-11-02 Nippon Steel Corp ウォーキングハース式加熱炉及び被加熱材の搬送方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7789660B2 (en) * 2005-12-07 2010-09-07 Ajax Tocco Magnethermic Corporation Furnace alignment system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108010A (en) * 1977-03-03 1978-09-20 Aeg Elotherm Gmbh Induction type continuous furnace to heat metal machine substance
JPS6060698U (ja) * 1983-09-30 1985-04-26 第一鍛造株式会社 鍛造用電気炉におけるガイドレ−ル
JPS63169328A (ja) * 1986-12-30 1988-07-13 Riken Corp 金属加熱炉用ガイドレ−ル
JPH0460535U (fr) * 1990-09-28 1992-05-25
JPH0658678A (ja) * 1992-08-06 1994-03-04 Mitsui Mining & Smelting Co Ltd レールレンガ
JPH11302722A (ja) * 1998-04-17 1999-11-02 Nippon Steel Corp ウォーキングハース式加熱炉及び被加熱材の搬送方法

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