Batch-type firing furnace

Abstract

To reduce the workload on workers when placing objects to be treated in a batch-type firing furnace. [Solution] A batch-type firing furnace (1) according to one embodiment of the technology disclosed herein comprises a furnace body (10), multiple rollers, a rotation drive mechanism (300), and an operation mechanism (400). The furnace body (10) has a front sidewall with a door (20), a rear sidewall facing the front sidewall in the depth direction, and sidewalls facing each other in the depth direction. Multiple rollers are inserted through the pair of sidewalls, aligned lengthwise, and arranged in the depth direction. The rotation drive mechanism (30) rotates the multiple rollers on the outside of at least one of the sidewalls on both sides of the furnace body (10). The operation mechanism (400) applies power to the rotation drive mechanism (300).

Description

[Technical Field]

[0001] The present disclosure relates to a batch-type kiln. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2009-229013 discloses an invention relating to a roller hearth kiln in which debinding and firing are carried out while the fired product is transported at a predetermined speed by a number of rollers.

[0003] Non-Patent Document 1 discloses a batch-type simulator as a batch-type firing furnace simulating a roller hearth kiln. In this batch-type simulator, one end of the furnace is open in the depth direction and a door is attached. Inside the furnace of this batch-type simulator, rod-shaped support members equivalent to the rollers of a roller hearth kiln are hung on both sides of the furnace wall at a predetermined interval in the depth direction. In this batch-type simulator, the material to be treated is fired while placed on these rod-shaped support members. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-229013 [Non-patent literature]

[0005] [Non-Patent Document 1] [Retrieved October 11, 2024], Internet<https: / / www.noritake.co.jp / products / eeg / parts / detail / 115 / > Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, in applications such as sintering metal powder, containers containing the materials to be processed may be stacked to improve productivity. Furthermore, the materials to be processed may be transported close together within the roller hearth kiln. For this reason, the inventors of this application also wish to increase the depth of the furnace in a batch-type simulator simulating a roller hearth kiln. On the other hand, materials to be processed, such as metal powder, have a large specific gravity. When containers containing the materials to be processed are stacked, they become considerably heavy. Therefore, if the depth of the furnace is increased, it becomes difficult to place the materials to be processed at the back of the furnace. [Means for solving the problem]

[0007] The batch-type firing furnace disclosed herein includes a furnace body, multiple rollers, a rotation drive mechanism, and an operation mechanism. The furnace body has a front sidewall with a door, a rear sidewall facing the front sidewall in the depth direction, and both sidewalls facing each other in the width direction between the front sidewall and the rear sidewall. The multiple rollers are inserted in the width direction through both sidewalls of the furnace body and are arranged in the depth direction. The rotation drive mechanism rotates the multiple rollers on the outside of at least one of the both sidewalls of the furnace body. The operation mechanism applies power to the rotation drive mechanism. This configuration reduces the workload on an operator when placing an object to be processed into the batch-type firing furnace. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a batch-type firing furnace 1. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the inside of the batch-type firing furnace 1. [Figure 3] FIG. 3 is a cross-sectional view showing the inside of the furnace body 10. [Figure 4] FIG. 4 is a cross-sectional view showing a support structure for the end of the roller 210a on the side wall 13a side. [Figure 5] FIG. 5 is a cross-sectional view showing a support structure for the end of the roller 210a on the side wall 13b side. [Figure 6]FIG. 6 is a schematic diagram of the rotation drive mechanism 300 and the operation mechanism 400. As shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that in the following drawings, components and parts that perform the same function are described using the same reference numerals. Dimensional relationships (length, width, thickness, etc.) in the drawings do not reflect actual dimensional relationships. The directions of up, down, left, right, front, and rear are represented by arrows U, D, L, R, F, and Rr, respectively, in the drawings. Here, the directions of up, down, left, right, front, and rear are defined merely for convenience of description and do not limit the present invention unless otherwise specified.

[0010] FIG. 1 is a perspective view of a batch-type firing furnace 1. FIG. 1 shows a schematic diagram of the overall structure of the batch-type firing furnace 1. FIG. 2 shows a longitudinal cross-sectional view of the interior of the batch-type firing furnace 1. The batch-type firing furnace 1 has a substantially rectangular internal space. FIG. 3 shows a transverse cross-sectional view of the interior of the furnace body 10. FIG. 3 shows a schematic diagram of the internal structure of the furnace body 10 as viewed from above in FIG. 1. The batch-type firing furnace 1 is equipped with a door 20 at one end in the depth direction for carrying in and out materials to be treated. Here, the side where the door 20 is attached is referred to as the "front," thereby defining the front and back. FIG. 2 shows a schematic diagram of the cross-sectional structure of the batch-type firing furnace 1 as viewed from the front.

[0011] As shown in FIGS. 1 to 3, the batch-type firing furnace 1 includes a furnace body 10, a plurality of rollers 210a to 210f, a rotation drive mechanism 300, and an operation mechanism 400.

[0012] As shown in Figures 2 and 3, the furnace body 10 has a front side wall 11, a rear side wall 12, side walls 13a and 13b on both sides, a bottom wall 14, and a ceiling wall 15. In this embodiment, the furnace body 10 is substantially rectangular. A door 20 is provided on the front side wall 11. The rear side wall 12 is a side wall facing the front side wall 11 in the depth direction. The side walls 13a and 13b on both sides are side walls facing each other in the width direction between the front side wall 11 and the rear side wall 12. A bottom wall 14 and a ceiling wall 15 are provided on the front side wall 11, the rear side wall 12, and the side walls 13a and 13b so as to face each other vertically. A substantially rectangular processing space 10S is defined by the front side wall 11, the rear side wall 12, the side walls 13a and 13b, the bottom wall 14, and the ceiling wall 15. The furnace body 10 is preferably disposed on a stand 900, as shown in FIGS.

[0013] Here, the treatment space 10S is a space where a treatment object housed in a container S is treated. The container S is a firing container called a sheath, setter, sagger, or the like. The container S houses, for example, a treatment object. The treatment object may be, for example, a metal material, a ceramic material used in electronic components, an active material used in an electricity storage device, or the like.

[0014] The door 20 is configured to be opened when the container S is loaded into the processing space 10S or when the container S is unloaded from the processing space 10S. In the embodiment shown in Fig. 1, the door 20 provided on the front side wall 11 is configured to be openable and closable around one of the side walls 13a, 13b (here, the side of side wall 13b) that face each other in the width direction of the furnace body 10. Here, the "opening / closing side of the door 20" refers to the side opposite the fulcrum when the door 20 is opened or closed.

[0015] Here, an opening / closing mechanism 30 is provided on the side of the side wall 13b that serves as a fulcrum of the door 20. The opening / closing mechanism 30 includes a frame 31, a shaft 32, and an arm 33.

[0016] The frame 31 is a substantially L-shaped member in a plan view from above. The frame 31 includes a base 31a and an offset portion 31b. As shown in FIG. 3, the base 31a and the offset portion 31b form a substantially L-shape in a plan view from above. The base 31a is a plate-like portion attached to the front side wall 11 of the furnace body 10 along the front side wall 11 so as to surround the opening 10a of the furnace body 10. The base 31a has an opening 31a1 aligned with the opening 10a provided in the front side wall 11 of the furnace body 10. The side wall 13b side of the base 31a is the pivot point side of the door 20. The offset portion 31b is a portion of the base 31a that protrudes forward from the upper end of the side wall 13b side of the base 31a, which is the pivot point side of the door 20. A pivot point 32a for the door 20 is provided at the tip of the offset portion 31b. A shaft 32 is attached to the pivot point 32a (see FIGS. 2 and 3).

[0017] The shaft 32 is attached in the up-down direction between the tip of the offset portion 31b and the stand 900. The shaft 32 is, for example, a member that serves as an axis when the door 20 opens and closes. One end of an arm 33 is rotatably attached to the shaft 32. The arm 33 extends in the width direction of the door 20 (the left-right direction in the drawing), and the other end of the arm 33 is attached to the center of the back surface of the door 20 via a bearing.

[0018] 1, a locking mechanism 40 is provided on the periphery of the door 20, which fixes the door 20 in a state where it is pressed against the base 31a of the frame 31. The locking mechanism 40 is configured so that it can be locked or unlocked by operating a handle while the door 20 is pressed against the base 31a of the frame 31. By fixing the door 20 in a state where it is pressed against the base 31a of the frame 31, the front side wall 11 of the door 20 presses firmly against the furnace body 10, ensuring the airtightness of the furnace body 10.

[0019] In the embodiment shown in FIGS. 1 and 2, an exhaust duct 50 is provided on the ceiling wall 15. The exhaust duct 50 is a duct for exhausting, for example, atmospheric gas from the processing space 10S to the outside. An exhaust device including, for example, an exhaust pump may be connected to the exhaust duct 50. A pressure sensor may be attached to the exhaust duct 50. The pressure sensor may be, for example, a manometer gauge that measures the exhaust pressure in the exhaust duct 50 and detects clogging of the exhaust duct 50.

[0020] In this embodiment, the furnace body 10 is made of a heat insulating material or a refractory material. The furnace body 10 may be made of a heat insulating material in which ceramic fiber boards formed into a predetermined shape are stacked in the thickness direction. The ceramic fiber board is, for example, a plate material formed by adding an inorganic filler and an inorganic / organic binder to so-called bulk fiber. Alternatively, the furnace body 10 may be made of a refractory material such as heat-resistant bricks. Although not particularly limited, the thickness of the furnace body 10 is preferably set to a required thickness that sufficiently insulates the heat of the processing space 10S. From the viewpoint of insulating the heat of the processing space 10S, the furnace body 10 may be provided with, for example, a cover 110. The side walls 13a and 13b on both sides of the furnace body 10 and the ceiling wall 15 may be covered with, for example, the cover 110. In this case, the cover 110 may be disposed at a distance from the outer surfaces of the side walls 13a and 13b on both sides. The cover 110 may be placed on the ceiling wall 15. The cover 110 is preferably made of a metallic material (such as stainless steel) that has excellent rigidity and heat resistance.

[0021] In the embodiment shown in FIG. 2, the furnace body 10 further includes heaters 61 and 62, gas supply pipes 71 to 74, temperature sensors 81 and 82, etc. The heaters 61 and 62 are heating equipment for the furnace body 10. Although not particularly limited, the heaters 61 and 62 may be, for example, ceramic heaters. The heater 61 is disposed in the upper part of FIG. 2 and is bridged between the side walls 13a and 13b on both sides. Ends of the heater 61 are disposed in the heater holders 120a and 120b, respectively. The heater 62 is disposed in the lower part of FIG. 2 and is bridged between the side walls 13a and 13b on both sides. Ends of the heater 62 are disposed in the heater holders 130a and 130b, respectively. The gas supply pipes 71 to 74 are supply paths for supplying atmospheric gas or air to the processing space 10S. Caps 70a to 70d are attached to the gas supply pipes 71 to 74, and are connected to gas supply sources via piping (not shown). The temperature sensors 81 and 82 are sensors that detect the temperature within the processing space 10S. Although not particularly limited, the temperature sensors 81 and 82 may be, for example, thermocouples. In this embodiment, the temperature sensor 81 is housed in the heater holder 120b and detects the temperature above the processing space 10S. The temperature sensor 82 is housed in the heater holder 130b and detects the temperature below the processing space 10S. The numbers of heaters, gas supply pipes, and temperature sensors provided in the furnace body 10 are not particularly limited and can be set as appropriate. The furnace body 10 may further include components used in this type of firing furnace.

[0022] As shown in FIG. 3, the rollers 210a-210f are inserted into the side walls 13a and 13b on both sides of the furnace body 10 in the width direction and are arranged at predetermined intervals in the depth direction of the furnace body 10. Here, the rollers 210a-210f are all hollow shaft members. The rollers 210a-210f may be hollow shafts made of ceramic. In this embodiment, insertion holes 13a1 and 13b1 for inserting the rollers 210a-210f are formed in the side walls 13a and 13b on both sides of the furnace body 10 in the width direction, respectively. The inner diameters of the insertion holes 13a1 and 13b1 are preferably slightly larger than the outer diameters of the rollers 210a-210f so that the rollers 210a-210f can be inserted therethrough. The insertion holes 13a1, 13b1 are formed at the same height in the side walls 13a, 13b on both sides in the width direction of the furnace body 10, at predetermined intervals in the depth direction of the furnace body 10. The rollers 210a to 210f are inserted into the insertion holes 13a1, 13b1.

[0023] As shown in Fig. 2, the rollers 210a to 210f (see Fig. 3) are supported by a first support mechanism 500 and a second support mechanism 600 on the outside of the side walls 13a and 13b on both sides of the furnace body 10. In this embodiment, the first support mechanism 500 supports the rollers 210a to 210f on the outside of the side wall 13a on the opening / closing side opposite the fulcrum of the door 20. The second support mechanism 600 supports the rollers 210a to 210f on the outside of the side wall 13b on the fulcrum side of the door 20. The first support mechanism 500 and the second support mechanism 600 are not shown in Fig. 3.

[0024] Here, Fig. 4 is a cross-sectional view showing the support structure for the end of roller 210a on the side wall 13a side. Fig. 5 is a cross-sectional view showing the support structure for the end of roller 210a on the side wall 13b side. Here, as shown in Figs. 4 and 5, the first support mechanism 500 on the side wall 13a side and the second support mechanism 600 on the side wall 13b side each have a support structure that supports the end of rollers 210a to 210f (see Fig. 3). The first support mechanism 500 on the side wall 13a side, that is, on the opening / closing side opposite the fulcrum of door 20, further includes a rotation drive mechanism 300 and an operation mechanism 400.

[0025] As shown in FIG. 4, the first support mechanism 500 includes shafts 511-515 (see FIG. 6, which will be described later; the same applies below), a housing 520, a fixing plate 530, a bearing plate 560, and packings 540, 550, and 570. In this embodiment, the shafts 511-515 are inserted into the ends of the rollers 210b-210f on the side wall 13a side, and support the rollers 210b-210f on the side wall 13a side (see FIG. 3). The shafts 511-515 do not have a connecting portion, which will be described later. The ends of the shafts 511-515 opposite the rollers 210b-210f are formed by base ends, which will be described later, to which sprockets 312-316 are attached. Other than this, the configuration of the shafts 511-515 may be similar to that of the handle shaft 420, which will be described later. Therefore, a description of the configuration of the shafts 511-515 will be omitted.

[0026] As shown in FIG. 5, the second support mechanism 600 includes a shaft 610, a housing 520, a fixing plate 530, a bearing plate 560, and packings 540, 550, and 570. In the embodiment shown in FIG. 5, the shaft 610 supports the roller 210a on the side wall 13b side. The configuration of the shaft 610 may be the same as the configurations of the shafts 511 to 515. Therefore, a description of the configuration of the shaft 610 will be omitted. Below, the housing 520, the fixing plate 530, the bearing plate 560, and the packings 540, 550, and 570 will be described. The housing 520, the fixing plate 530, the bearing plate 560, and the packings 540, 550, and 570 shown in FIG. 5 may be the same as the respective components shown in FIG. 4, except that they are provided on the side wall 13b side and that neither the rotation drive mechanism 300 nor the operation mechanism 400 is provided.

[0027] Here, the housing 520 is box-shaped. The length of the housing 520 along the depth direction of the furnace body 10 is longer than the other lengths. As shown in FIGS. 4 and 5, the housing 520 is disposed on a fixing plate 530 provided on the cover 110. In this embodiment, the housing 520 is fixed to the fixing plate 530 by bolts 58a1-58a6 and 58b1-58b6 (see FIG. 6). As shown in FIGS. 4 and 5, a packing 540 is disposed between the housing 520 and the fixing plate 530. As shown in FIGS. 4 and 5, the housing 520 is fixed to a bearing plate 560 on the side opposite the fixing plate 530 by bolts 58e and 58f. As shown in FIGS. 4 and 5, a packing 570 is disposed between the housing 520 and the bearing plate 560. In this embodiment, housing 520 accommodates, on the side wall 13a side, a portion of rollers 210a-210f and a portion of handle shaft 420 or shafts 511-515 attached to rollers 210a-210f. In the embodiment shown in Fig. 5, housing 520 accommodates, on the side wall 13b side, a portion of roller 210a and a portion of shaft 610 attached to roller 210a.

[0028] In this embodiment, the housing 520 is made up of multiple plates. As shown in FIGS. 4 and 5 , the housing 520 has a first plate 521, a second plate 522, a third plate 523, a fourth plate 524, and a lid 525. The first plate 521 and the second plate 522 face each other. The third plate 523, the fourth plate 524, and the lid 525 face each other and are disposed between the first plate 521 and the second plate 522. The housing 520 has a space surrounded by the first plate 521, the second plate 522, the third plate 523, the fourth plate 524, and the lid 525.

[0029] Here, the first plate 521 has a rectangular shape and has a through hole 521h. As shown in FIGS. 4 and 5, the first plate 521 is fixed to the fixing plate 530. The through hole 521h of the first plate 521 is aligned with the through hole 530h of the fixing plate 530. The roller 210a is inserted through the through hole 521h and the through hole 530h. The diameter of the through hole 521h may be large enough to allow the roller 210a to rotate. The first plate 521 has a plurality of through holes 521h. The number of the through holes 521h may be the same as the number of the rollers, for example.

[0030] Here, the second plate 522 is rectangular and has a through hole 522h. As shown in FIGS. 4 and 5, the second plate 522 is fixed to the bearing plate 560. The through hole 522h of the second plate 522 is overlapped with the bearing 590. The handle shaft 420 or the shaft 610 is inserted through the through hole 522h and the bearing 590. In the embodiment shown in FIGS. 4 and 5, a bearing ring 590a1 is disposed inside the through hole 522h. Therefore, the diameter of the through hole 522h should be large enough to allow the bearing ring 590a1 to rotate. The second plate 522 has a plurality of through holes 522h. The number of through holes 522h may be the same as the number of rollers, for example.

[0031] The third plate 523 here has a rectangular shape. In the embodiment shown in Figures 4 and 5, the third plate 523 connects the first plate 521 and the second plate 522 below the roller 210a.

[0032] Here, fourth plate 524 is rectangular and has opening 524h. Opening 524h is, for example, rectangular and is provided such that the long side direction thereof is aligned with the long side direction of fourth plate 524. As shown in FIGS. 4 and 5, opening 524h is closed by packing 550 and lid 525.

[0033] Here, the lid 525 has a rectangular shape. As shown in FIGS. 4 and 5, the lid 525 is placed on the fourth plate 524 and closes the opening 524h. The lid 525 is fixed to the fourth plate 524 by bolts 58c and 58d. The number of bolts for fixing the lid 525 to the fourth plate 524 is not particularly limited, and may be set appropriately depending on the size of the lid 525, etc.

[0034] Here, the fixing plate 530 has a rectangular shape and is larger than or equal to the first plate 521. As shown in FIGS. 4 and 5, the fixing plate 530 has a through hole 530h. The through hole 530h is larger than the through hole 521h of the first plate 521. A packing 540 is disposed inside the through hole 530h. The fixing plate 530 may be attached to the cover 110 by, for example, welding.

[0035] Here, the bearing plate 560 has a rectangular shape and has a through hole 560h. As shown in FIGS. 4 and 5, a bearing 590 is attached to the through hole 560h. The bearing 590 is fixed around the through hole 560h by a fixing portion 590b. The bearing plate 560 has a plurality of through holes 560h. The number of through holes 560h may be the same as the number of rollers, for example.

[0036] Gasket 540 is disposed between first plate 521 and fixing plate 530 and inside through-hole 530h of fixing plate 530. Gasket 550 is disposed between lid 525 and fourth plate 524 and inside opening 524h of fourth plate 524. Gasket 570 is disposed between second plate 522 and bearing plate 560. Gaskets 540, 550, 570 are all made of a resin material such as silicone resin, fluororesin, or the like.

[0037] FIG. 6 is a schematic diagram of the rotation drive mechanism 300 and the operation mechanism 400. FIG. 6 shows a partial plan view of the rotation drive mechanism 300. The rotation drive mechanism 300 rotates the rollers 210a-210f on the outside of the side wall 13a of the furnace body 10. The operation mechanism 400 applies power to the rotation drive mechanism 300. In FIG. 6, a handle 410 of the operation mechanism 400 is shown to make it easier to understand the positional relationship between the mechanisms. In the embodiment shown in FIGS. 1 and 6, the rotation drive mechanism 300 is provided on a housing 520 on the outside of the side wall 13a on the opening / closing side of the door 20. As shown in FIGS. 4 and 6, the rotation drive mechanism 300 includes sprockets 311 to 316, a chain 320, tension sprockets 331 to 333, plates 341 and 342, a tension plate 350, a holder plate 360, and a chain guide 370.

[0038] Any sprockets used for this type of application can be used as sprockets 311 to 316, without any particular restrictions. As shown in Fig. 4, sprocket 311 is attached to handle shaft 420 of operating mechanism 400. As shown in Fig. 6, sprockets 312 to 316 are attached to shafts 511 to 515 of first support mechanism 500. A chain 320 is wound around sprockets 311 to 316.

[0039] Any chain used for this type of application can be used as the chain 320, without any particular restrictions. The chain 320 is wound around sprockets 311 to 316 and tension sprockets 331 to 333. Fig. 6 shows a portion of the chain 320. The path of the chain 320 is indicated by a two-dot chain line. A portion of the path of the chain 320 is supported by a chain guide 370.

[0040] Any tension sprockets used for this type of application can be used without any particular restrictions as tension sprockets 331 to 333. As shown in Figure 6, tension sprockets 331 to 333 are attached below sprockets 311 to 316.

[0041] Here, plates 341 and 342 are generally rectangular. As shown in Fig. 6, plate 341 is fixed to bearing plate 560 on housing 520 by bolts 38a1 and 38a2, and supports tension sprocket 331. Plate 342 is fixed to bearing plate 560 on housing 520 by bolts 38a3 and 38a4, and supports tension sprocket 332. In this embodiment, the heights of tension sprockets 331 and 332 are adjusted by plates 341 and 342 and bolts 38a1 to 38a4 so that they are the same height as sprockets 311 to 316, with the upper surface of bearing plate 560 as the reference.

[0042] Here, the tension plate 350 has a substantially hexagonal shape. The shape of the tension plate 350 is not particularly limited as long as it has an elongated hole 350h, which will be described later. As shown in FIG. 6, the tension plate 350 has an elongated hole 350h. The major axis of the elongated hole 350h is aligned with the vertical direction in the drawing. The tension plate 350 is fixed to a bearing plate 560 on the housing 520 by bolts 38b1 and 38b2 and supports the tension sprocket 333. In this embodiment, the height of the tension sprocket 333 is adjusted by the tension plate 350 and bolts 38b1 and 38b2 so that it is the same height as the sprockets 311 to 316, with the upper surface of the bearing plate 560 as the reference. In this embodiment, the shaft of the tension sprocket 333 is inserted through the elongated hole 350h. Therefore, the tension sprocket 333 is movable along the major axis of the elongated hole 350h (the vertical direction in FIG. 6). By such movement of the tension sprocket 333, the tension of the chain 320 can be adjusted.

[0043] Here, the holder plate 360 ​​has a rectangular shape. As shown in Fig. 6, the holder plate 360 ​​is fixed onto the bearing plate 560 with its long side aligned with the long side of the bearing plate 560. A bolt (for example, bolt 38c (see Fig. 4)) may be used for such fixing. In this embodiment, the height of the holder plate 360, the height of the plates 341 and 342, and the height of the tension plate 350 are the same with respect to the top surface of the bearing plate 560 (see Fig. 4).

[0044] Here, the chain guide 370 is a substantially rectangular plate. As shown in Figure 6, the chain guide 370 is fixed onto the holder plate 360 ​​with its long side aligned with the long side of the holder plate 360. This fixing is achieved using bolts 38d1-38d4 and a collar 390 (see Figure 4). The chain guide 370 should be positioned so that the chain 320 can be appropriately wound around the sprockets 311-316 and the tension sprockets 331-333.

[0045] As shown in FIG. 6, the operating mechanism 400 includes a handle 410 , a handle shaft 420 , and a stopper 430 .

[0046] Any handle used for this type of application can be used as the handle 410, without any particular restrictions. In this embodiment, the handle 410 is configured to manually generate power and apply the power to the rotation drive mechanism 300. The handle 410 is provided closer to the front side wall 11 where the door 20 is provided than the center of the furnace body 10 in the depth direction.

[0047] Here, the handle shaft 420 is the drive shaft of the roller 210a. As shown in Fig. 4, the handle 410 is attached to one end of the handle shaft 420, the sprocket 311 is attached to the middle portion, and the other end is inserted into the roller 210a. The handle shaft 420 rotates when the handle 410 is operated, thereby rotating the roller 210a. The handle shaft 420 may be made of metal, for example.

[0048] 4, the roller 210a includes a connecting portion 421, a base end portion 422, an insertion portion 423, a spring seat portion 424, and a support portion 425. A handle 410, a stopper 430, a bearing 450, and a collar 460 are attached to the connecting portion 421 in this order toward the roller 210a. The connecting portion 421 is rotatable relative to the bearing 450 and the collar 460. For this reason, it is preferable that the diameter of the connecting portion 421 be approximately the same as the inner diameter of the bearing 450 and smaller than the inner diameter of the collar 460.

[0049] In this embodiment, the base end 422 is cylindrical. The base end 422 extends from the connecting portion 421 toward the roller 210a. As shown in FIG. 4, the connecting portion 421 and the base end 422 are connected inside the collar 460. The sprocket 311, the shaft holder 470, the bearing 590, and the bearing ring 590a1 are attached to the base end 422, in this order, toward the roller 210a. The base end 422 is rotatable relative to the shaft holder 470, the bearing 590, and the bearing ring 590a1. Therefore, the diameter of the base end 422 is approximately the same as the inner diameter of the bearing 590 and the inner diameter of the bearing ring 590a1, and is preferably smaller than the inner diameter of the shaft holder 470.

[0050] Here, the insertion portion 423 is cylindrical. In the embodiment shown in FIG. 4, the insertion portion 423 extends from the base end portion 422 toward the roller 210a. The insertion portion 423 has a first portion 423a and a second portion 423b. The first portion 423a is cylindrical and adjacent to the base end portion 422. The second portion 423b is cylindrical and extends from the first portion 423a toward the roller 210a. The diameter of the second portion 423b is smaller than the diameter of the first portion 423a. In this embodiment, the insertion portion 423 is inserted into a coil spring 21A attached to the end of the roller 210a.

[0051] 4, the spring seat 424 is ring-shaped. As shown in FIG. 4, the spring seat 424 is provided around the first portion 423a of the insertion portion 423. In this embodiment, one end of the coil spring 21A abuts against the spring seat 424. Here, the spring seat 424 sandwiches and supports the end of the roller 210a and the coil spring 21A.

[0052] Here, the support portion 425 has a rectangular column shape. As shown in Fig. 4, the support portion 425 extends from the second portion 423b of the insertion portion 423 toward the roller 210a. The support portion 425 is inserted into the roller 210a and supports the roller 210a. For this reason, it is preferable that the support portion 425 does not rotate within the roller 210a and has a diameter that can support the roller 210a.

[0053] 4, the handle shaft 420 is supported on the housing 520 via a bearing 590. The bearing 590 is fixed to a bearing plate 560 on the housing 520 by a fixing portion 590b.

[0054] The stopper 430 is ring-shaped in this embodiment. The stopper 430 may be a part of the handle 410. By tightening the stopper 430 onto the handle shaft 420, the handle 410 and the handle shaft 420 can be integrated. By loosening the stopper 430 onto the handle shaft 420, the handle 410 and the handle shaft 420 can be separated.

[0055] Hereinafter, the procedure for firing an object to be treated using the batch-type firing furnace 1 will be described with reference to the drawings as appropriate. Note that this firing procedure is merely an example and does not limit the manner in which the batch-type firing furnace 1 can be used.

[0056] For example, first, the operator prepares a container S containing an object to be treated. Next, the operator opens the door 20 of the batch-type firing furnace 1 and places the container S on the rollers 210a-210f. Next, the operator manually operates the handle 410 of the operation mechanism 400 to rotate the rollers 210a-210f via the operation of the rotation drive mechanism 300, thereby moving the container S from the door 20 side toward the rear side wall 12. At this time, the operator may operate the handle 410 while visually checking the container S on the rollers 210a-210f. Here, when the container S reaches a predetermined position, the operator stops operating the handle 410. Next, the operator closes the door 20 and tightens the handle 410 to seal the processing space 10S. Then, the operator turns on the heaters 61 and 62 and starts heat treatment of the object to be treated under predetermined conditions while supplying atmospheric gas or air into the processing space 10S through the gas supply pipes 71-74 (see FIG. 2). Setting the interior of the processing space 10S to predetermined conditions and controlling the interior of the processing space 10S to be under the predetermined conditions can be performed, for example, by using a control device (not shown).

[0057] When the heat treatment of the object to be treated is completed, for example, the heaters 61 and 62 are turned off to lower the temperature in the treatment space 10S, and the supply of atmospheric gas or air from the gas supply pipes 71-74 is stopped (see FIG. 2). Thereafter, for example, the operator loosens the handle 410 to open the door 20. Next, the operator manually operates the handle 410 of the operation mechanism 400 to rotate the rollers 210a-210f via the operation of the rotation drive mechanism 300, thereby moving the container S from the rear side wall 12 side toward the door 20. At this time, it is preferable to operate the handle 410 while visually checking the container S on the rollers 210a-210f. Then, the operator may remove the container S from the treatment space 10S, close the door 20, and complete a series of operations using the batch-type firing furnace 1.

[0058] As described above, the batch-type firing furnace 1 includes a furnace body 10, rollers 210a-210f, a rotation drive mechanism 300, and an operation mechanism 400. The furnace body 10 has a front side wall 11 provided with a door 20, and side walls 13a and 13b on both sides facing the front side wall 11 in the depth direction. The rollers 210a-210f are inserted in the width direction through the side walls 13a and 13b on both sides of the furnace body 10 and are aligned in the depth direction. The rotation drive mechanism 300 rotates the rollers 210a-210f on the outside of at least one of the side walls 13a and 13b on both sides of the furnace body 10. The operation mechanism 400 applies power to the rotation drive mechanism 300.

[0059] The batch-type firing furnace 1 includes a furnace body 10 having a front sidewall 11 with a door 20, a rear sidewall 12 facing the front sidewall 11 in the depth direction, and a pair of opposite sidewalls 13a, 13b facing each other in the depth direction. The batch-type firing furnace 1 includes rollers 210a-210f that are inserted through the pair of opposite sidewalls 13a, 13b of the furnace body 10, are aligned in the length direction, and are arranged in the depth direction. This allows an operator to place a container S containing material to be treated on the rollers 210a-210f in the batch-type firing furnace 1. The batch-type firing furnace 1 includes a rotation drive mechanism 300 that rotates the rollers 210a-210f on the outside of at least one of the pair of opposite sidewalls 13a, 13b of the furnace body 10. Since the rollers 210a to 210f are rotated by the rotation drive mechanism 300, the container S placed on the rollers 210a to 210f can be moved from the front side (here, the door 20 side) toward the depth direction. Furthermore, the container S placed on the rollers 210a to 210f can be moved from the rear sidewall 12 side toward the front side (here, the door 20 side). This reduces the burden on the worker when placing the container S containing the material to be treated into the batch-type firing furnace 1. The above-mentioned effect can be particularly preferably achieved when the batch-type firing furnace 1 is a deep batch-type firing furnace.

[0060] The operating mechanism 400 may have a handle 410 provided closer to the front side wall 11 where the door is provided than the center in the depth direction. This allows, for example, an operator to easily move the container S while visually checking the inside of the furnace body 10 with the door 20 open, thereby improving workability and safety.

[0061] The operating mechanism 400 may be configured to manually apply power to the rotation drive mechanism 300. This allows the container S to be moved on the rollers 210a to 210f while better observing the state inside the furnace body 10. This further improves the safety of the work.

[0062] The door 20 may be able to be opened and closed using one of the side walls 13a, 13b as a fulcrum. The operating mechanism 400 may be provided on the outside of the side wall (here, the side wall 13a) on the opening / closing side opposite the fulcrum of the door 20. This allows the worker to more easily view the inside of the furnace body 10 when moving the container S, thereby further improving workability and safety.

[0063] The operation mechanism 400 may include a handle 410 that can be attached to and detached from the rotation drive mechanism 300. This allows the handle 410 to be attached to the rotation drive mechanism 300 only when the container S is being moved within the furnace body 10. In other words, the handle 410 can be detached from the rotation drive mechanism 300 during heat treatment in the batch-type firing furnace 1. This allows for safer operation of the batch-type firing furnace 1.

[0064] The rotation drive mechanism 300 may include sprockets 311-316 attached to the ends of the rollers 210a-210f, and a chain 320 wound around the sprockets 311-316. This allows the rollers 210a-210f to rotate in unison. Furthermore, power can be applied more uniformly to each roller. This further enhances the effects of the technology disclosed herein.

[0065] The operating mechanism 400 may be configured so that a driving force is applied to a shaft (here, the handle shaft 420) to which the sprocket 311 closest to the front side wall 11 is attached, among the sprockets 311 to 316 attached to the ends of the rollers 210a to 210f. This allows the operator to more easily view the inside of the furnace body 10 when moving the container S, thereby further improving workability and safety.

[0066] The batch-type firing furnace 1 may include support mechanisms (here, a first support mechanism 500 and a second support mechanism 600) that support the rollers 210a to 210f on the outsides of both side walls 13a, 13b of the furnace body 10. Of the both side walls 13a, 13b, the rotation drive mechanism 300 may be provided on the side wall 13a, on which the rotation drive mechanism 300 is provided, and the rotation drive mechanism 300 may rotate the rollers 210a to 210f via the first support mechanism 500. This makes it possible to apply a rotational drive force to the rollers 210a to 210f more stably and achieve space savings.

[0067] The batch-type firing furnace 1 may further include a sensor and an alarm device (not shown). The sensor may detect the object to be treated (here, the container S containing the object to be treated) placed on the rollers 210a to 210f at a predetermined position in the depth direction. The alarm device may notify the sensor that the object to be treated has been detected. This makes it easier to place the object to be treated in an appropriate position on the rollers 210a to 210f. This further improves workability, safety, and the like. Furthermore, the object to be treated can be subjected to more appropriate heat treatment. Note that the detection by the sensor and the alarm by the alarm device may be controlled, for example, by a control device. The sensor and the alarm device may be conventional sensors and alarm devices used for this type of application, respectively.

[0068] In the above embodiment, the rotation drive mechanism 300 is operated by operating the manual handle 410 of the operation mechanism 400. However, the technology disclosed herein is not limited to this. Instead of or in addition to the operation mechanism 400, the batch-type firing furnace 1 may be provided with another operation mechanism (hereinafter also referred to as "another operation mechanism") different from the operation mechanism 400 that is configured to automatically apply power to the rotation drive mechanism 300. The other operation mechanism may be provided with, for example, a motor that applies power to the rotation drive mechanism 300.

[0069] The above-described embodiments are merely examples and do not limit the scope of the claims. Thus, the technology described in the claims includes various modifications and alterations of the above-described embodiments.

[0070] The technology disclosed herein includes the following: Section 1: a front side wall provided with a door; a rear side wall facing the front side wall in a depth direction; and side walls on both sides opposed to each other in the width direction between the front side wall and the rear side wall. a furnace body having A plurality of rollers inserted in the width direction of the side walls of the furnace body and arranged in the depth direction; a rotation drive mechanism that rotates the rollers on the outside of at least one of the side walls of the furnace body; an operating mechanism that applies power to the rotation drive mechanism; Equipped with Batch firing furnace. Section 2: The operation mechanism has a handle provided closer to the front side wall on which the door is provided than the center in the depth direction. Item 1. The batch-type firing furnace according to item 1. Section 3: the operating mechanism is configured to manually power the rotary drive mechanism; Item 1 or 2, the batch type firing furnace. Section 4: The door can be opened and closed using one of the side walls as a fulcrum, The operating mechanism is provided on the outside of the side wall on the opening / closing side opposite the fulcrum of the door. Item 4. A batch-type firing furnace according to any one of Items 1 to 3. Section 5: The operation mechanism includes a handle that is detachable from the rotation drive mechanism. Item 5. A batch-type firing furnace according to any one of Items 1 to 4. Item 6: The rotation drive mechanism includes: a sprocket attached to the end of each roller; and A chain wound around the sprocket Equipped with Item 6. A batch-type firing furnace according to any one of Items 1 to 5. Section 7: The operating mechanism is configured to apply a driving force to a shaft to which one of the sprockets attached to the end of each roller is closest to the front side wall. Item 6. The batch-type firing furnace according to item 6. Section 8: A support mechanism is provided on the outside of the side walls of the furnace body to support the plurality of rollers, In one of the side walls on both sides, the rotation drive mechanism rotates the rollers via the support mechanism. Item 8. The batch-type firing furnace according to any one of Items 1 to 7. Section 9: a sensor that detects objects placed on the rollers at a predetermined position in the depth direction; an alarm device that notifies that the object to be processed has been detected by the sensor; Furthermore, Item 9. A batch-type firing furnace according to any one of Items 1 to 8. [Explanation of symbols]

[0071] 1 Batch firing furnace 10 Furnace body 11 Front side wall 12 Back side wall 13a, 13b Side walls on both sides 210a~210f Roller 300 Rotational Drive Mechanism 400 Operating mechanism 500 1st support mechanism 600 Second support mechanism

Claims

1. a front side wall provided with a door; a rear side wall facing the front side wall in a depth direction; and side walls on both sides opposed to each other in the width direction between the front side wall and the rear side wall. a furnace body having A plurality of rollers inserted in the width direction of the side walls of the furnace body and arranged in the depth direction; a rotation drive mechanism that rotates the rollers on the outside of at least one of the side walls of the furnace body; an operating mechanism that applies power to the rotation drive mechanism; Equipped with The operation mechanism has a handle provided closer to the front side wall on which the door is provided than the center in the depth direction. Batch firing furnace.

2. A front side wall provided with a door; a rear side wall facing the front side wall in a depth direction; and side walls on both sides opposed to each other in the width direction between the front side wall and the rear side wall. a furnace body having A plurality of rollers inserted in the width direction of the side walls of the furnace body and arranged in the depth direction; a rotation drive mechanism that rotates the rollers on the outside of at least one of the side walls of the furnace body; an operating mechanism that applies power to the rotation drive mechanism; Equipped with the operating mechanism is configured to manually power the rotary drive mechanism; Batch firing furnace.

3. A front side wall provided with a door; a rear side wall facing the front side wall in a depth direction; and side walls on both sides opposed to each other in the width direction between the front side wall and the rear side wall. a furnace body having A plurality of rollers inserted in the width direction of the side walls of the furnace body and arranged in the depth direction; a rotation drive mechanism that rotates the rollers on the outside of at least one of the side walls of the furnace body; an operating mechanism that applies power to the rotation drive mechanism; Equipped with The operation mechanism includes a handle that is detachable from the rotation drive mechanism. Batch firing furnace.

4. A front side wall provided with a door; a rear side wall facing the front side wall in a depth direction; and side walls on both sides opposed to each other in the width direction between the front side wall and the rear side wall. a furnace body having A plurality of rollers inserted in the width direction of the side walls of the furnace body and arranged in the depth direction; a rotation drive mechanism that rotates the rollers on the outside of at least one of the side walls of the furnace body; an operating mechanism that applies power to the rotation drive mechanism; Equipped with a sensor that detects objects placed on the rollers at a predetermined position in the depth direction; an alarm device that notifies that the object to be processed has been detected by the sensor; Furthermore, Batch firing furnace.

5. The door can be opened and closed using one of the side walls as a fulcrum, The operating mechanism is provided on the outside of the side wall on the opening / closing side opposite the fulcrum of the door. The batch-type firing furnace according to any one of claims 1 to 4.

6. The rotation drive mechanism includes: a sprocket attached to the end of each roller; and A chain wound around the sprocket Equipped with The batch-type firing furnace according to any one of claims 1 to 4.

7. The operating mechanism is configured to apply a driving force to a shaft to which one of the sprockets attached to the end of each roller is closest to the front side wall. The batch-type firing furnace according to claim 6.

8. A support mechanism is provided on the outside of the side walls of the furnace body to support the plurality of rollers, In one of the side walls on both sides, the rotation drive mechanism rotates the rollers via the support mechanism. The batch-type firing furnace according to any one of claims 1 to 4.

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