Heat processing system

Abstract

To disclose a technology capable of shortening a time necessary to transport a saggar.SOLUTION: A heat processing system includes: a heat processing furnace including a carry-in port and a carry-out port, and an inside space in which plural saggars are transported from the carry-in port toward the carry-out port; and a return line arranged outside the heat processing furnace and delivering the plural saggars from the carry-out port to the carry-in port. The return line includes a first transport device disposed in a first section and transporting the plural saggars and a second transport device disposed in a second section different from the first section and transporting the plural saggars by a beam or a bar.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The technology disclosed herein relates to a thermal processing system. [Background technology]

[0002] Patent Document 1 discloses a heat treatment system. The heat treatment system includes a heat treatment furnace having an internal space in which a plurality of saggers are transported from an inlet to an outlet, and a return line disposed outside the heat treatment furnace and transporting the plurality of saggers from the outlet to the inlet. The return line transports the plurality of saggers using a roller conveyor and a chain conveyor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7041300 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above heat treatment system, the multiple sacks are placed on a roller conveyor or a chain conveyor in a state of being closely packed in the conveying direction, and are conveyed in the conveying direction. In this configuration, the posture of the sacks may change during conveying. Also, on the return line, various operations such as supplying the materials to be treated before heat treatment to the emptied sacks must be performed. At this time, it is necessary to move the multiple sacks apart in the conveying direction and adjust the posture of the sacks to a predetermined direction. If at least one of the operations of moving the multiple sacks apart in the conveying direction and adjusting the posture of the sacks is performed at a position where the sacks are to be worked on or immediately before the sacks are to be worked on, it takes time to transport the sacks on the return line.

[0005] This specification discloses a technique that can shorten the time required for transporting saggers. [Means for solving the problem]

[0006] In a first aspect of the technology disclosed in this specification, a heat treatment system includes a heat treatment furnace having an inlet and an outlet, and an internal space through which a plurality of saggers are transported from the inlet to the outlet, and a return line arranged outside the heat treatment furnace and transporting the plurality of saggers from the outlet to the inlet. The return line includes a first transport device arranged in a first section and transporting the plurality of saggers, and a second transport device arranged in a second section different from the first section and transporting the plurality of saggers by a beam or bar.

[0007] According to the above configuration, since the second conveying device conveys a plurality of sacks by a beam or bar, the change in the posture of the sacks is suppressed while the plurality of sacks are being conveyed. This makes it possible to eliminate the need to adjust the posture of the sacks at a predetermined position (e.g., the second section) in the return line. Also, since the second conveying device conveys a plurality of sacks by a beam or bar, the distance between the sacks can be maintained. This makes it possible to shorten the time required to convey the sacks. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of a heat treatment system according to a first embodiment. [Diagram 2] FIG. 1 is a schematic diagram of a crushing device according to a first embodiment. [Diagram 3] FIG. 2 is a schematic diagram of the recovery device of the first embodiment. [Figure 4] FIG. 1 is a schematic diagram of a cleaning device according to a first embodiment. [Diagram 5] FIG. 1 is a schematic diagram of a filling device according to a first embodiment. [Figure 6] FIG. 1 is a schematic diagram of a surface leveling device according to a first embodiment. [Figure 7] FIG. 2 is a top view of the heat treatment system of the first embodiment when the sagger is placed on the mounting table and the sagger is placed on the second upstream roller conveyor. [Figure 8]FIG. 2 is a side view of the heat treatment system of the first embodiment when the sagger is placed on the mounting table and the sagger is placed on the first upstream roller conveyor. [Figure 9] 4 is a side view of the heat treatment system of the first embodiment when the stopper is located at a second position. FIG. [Figure 10] FIG. 2 is a top view of the heat treatment system of the first embodiment when the sagger is placed on the mounting table and the sagger is placed on the first upstream roller conveyor. [Figure 11] FIG. 2 is a side view of the heat treatment system of the first embodiment when a sagger is placed on the moving device before the moving device moves in the transport direction. [Figure 12] FIG. 2 is a side view of the heat treatment system of the first embodiment, showing a state in which a sagger is placed on the moving device after the moving device has moved in the transport direction. [Figure 13] FIG. 2 is a side view of the heat treatment system of the first embodiment, in which the saggers are placed on the first downstream roller conveyor and the saggers are placed on the mounting table. [Figure 14] FIG. 11 is a schematic diagram of a heat treatment system according to a second embodiment.

[0009] The main features of the embodiments described below are listed below. Note that the technical elements described below are independent technical elements that exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

[0010] In a second aspect of the technology disclosed in this specification, in the first aspect described above, the heat treatment system further includes a treatment device disposed in the second section and treating the saggers transported by the second transport device. The second transport device is capable of carrying the plurality of saggers arranged in the transport direction, and includes a moving device capable of moving in the transport direction, a retreating direction opposite to the transport direction, an upward direction perpendicular to the transport direction, and a downward direction opposite to the upward direction. With the above configuration, it is possible to eliminate the need to adjust the position of the saggers when the saggers are treated by the treatment device. This makes it possible to shorten the time required to transport the saggers.

[0011] In a third aspect of the technology disclosed in this specification, in the second aspect described above, the heat treatment system further includes a mounting table on which the sagger to be treated by the treatment device is placed. The moving device moves the sagger onto the mounting table when moving in the transport direction, the upward direction, and the downward direction. With the above configuration, it is possible to eliminate the need to adjust the position of the sagger on the mounting table before treating it. This makes it possible to shorten the time required to transport the sagger.

[0012] In a fourth aspect of the technology disclosed in this specification, in the third aspect described above, the first conveying device further includes an upstream conveyor arranged upstream of the return line from the second conveying device, and a downstream conveyor arranged downstream of the return line from the second conveying device. When the moving device moves in the conveying direction, the upward direction, and the downward direction, it moves the saggers conveyed by the upstream conveyor onto the placement table, and moves the saggers on the placement table onto the downstream conveyor. According to the above configuration, the saggers on the first conveyor move from the first conveyor to the placement table, and at the same time, the saggers on the placement table move from the placement table to the second conveyor. This makes it possible to shorten the time required to transport the saggers.

[0013] In a fifth aspect of the technique disclosed in the present specification, the heat treatment system in the fourth aspect further includes a posture adjustment device that adjusts the posture of the sagger on the upstream conveyor. According to the above configuration, the sagger whose posture has been adjusted can be moved from the first conveyor to the placement table.

[0014] In a sixth aspect of the technology disclosed in the present specification, in any one of the second to fifth aspects, the processing device is selected from a group including a cleaning device for cleaning the sagger, a filling device for filling the sagger with the object to be processed, and a surface smoothing device for smoothing the surface of the object to be processed in the sagger. Normally, when processing saggers using a cleaning device, a filling device, and a surface smoothing device, it is necessary to adjust the position of the saggers in order to suppress the variation in processing for each sagger. According to the above configuration, even when a cleaning device, a filling device, and a surface smoothing device are selected as the processing device, it is not necessary to adjust the position of the saggers, and the distance between the saggers can be maintained. This makes it possible to shorten the time required to transport the saggers.

[0015] (First embodiment) As shown in FIG. 1, the heat treatment system 2 includes a heat treatment furnace 10 and a return line 12.

[0016] The heat treatment furnace 10 bakes, that is, heat treats, the workpiece 6 (see FIG. 4) packed in the sagger 4. The workpiece 6 is, for example, a raw material for a ceramic capacitor, or a positive electrode material and a negative electrode material for a lithium ion battery.

[0017] The heat treatment furnace 10 is a thermally insulated structure having a substantially rectangular parallelepiped shape. The heat treatment furnace 10 has an internal space 14 therein. The heat treatment furnace 10 also has an inlet 16 disposed at one end of the heat treatment furnace 10 and an outlet 18 disposed at the other end of the heat treatment furnace 10. The internal space 14 communicates with the outside of the heat treatment furnace 10 via the inlet 16 and the outlet 18. The multiple sacks 4 are transported in the transport direction D1 in the stacked state by the rollers 20 through the internal space 14. As a result, the multiple sacks 4 are transported from the inlet 16 toward the outlet 18.

[0018] The return line 12 is disposed outside the heat treatment furnace 10. The return line 12 transports the plurality of saggers 4 in a transport direction D1, thereby sending them from the discharge outlet 18 to the discharge inlet 16.

[0019] The return line 12 includes a plurality of (four in this embodiment) first sections 22 and a plurality of (three in this embodiment) second sections 24. The first sections 22 and the second sections 24 are arranged alternately. The inlet 16 and the outlet 18 of the heat treatment furnace 10 are each connected to the first section 22.

[0020] The return line 12 includes a first conveying device 28 and a second conveying device 30. The first conveying device 28 is disposed in the first section 22. The first conveying device 28 includes a plurality of rollers 31 rotatably supported at both ends. As the rollers 31 rotate, the sacks 4 are roller-conveyed on the rollers 31 in the conveying direction D1. The second conveying device 30 includes a moving device 32. For example, the sacks 4 are walking beam-conveyed in the conveying direction D1 by the moving device 32. The configuration of the moving device 32 and the method of conveying the sacks 4 will be described in detail later.

[0021] The heat treatment system 2 includes a disassembly device 34, a cooling device 36, a crushing device 38, a recovery device 40, and a stacking device 42. The disassembly device 34, the cooling device 36, the crushing device 38, the recovery device 40, and the stacking device 42 are arranged in the first section 22. The disassembly device 34, the cooling device 36, the crushing device 38, the recovery device 40, and the stacking device 42 are arranged in order from the upstream to the downstream of the return line 12. The disassembly device 34, the cooling device 36, the crushing device 38, and the recovery device 40 are arranged upstream of the second section 24 located at the most upstream side. The stacking device 42 is arranged downstream of the second section 24 located at the most downstream side.

[0022] After the sacks 4 are discharged from the discharge opening 18, the disassembly device 34 disassembles the vertically stacked sacks 4 into a non-stacked state. As a result, the sacks 4 are transported in a line in the transport direction D1. The vertical direction is substantially perpendicular to the transport direction D1.

[0023] The cooling device 36 is configured so that the sagger 4 can pass through it. The cooling device 36 cools the sagger 4 and the object 6 to be treated packed in the sagger 4 by a refrigerant (e.g., air or water) flowing through a cooling pipe (not shown).

[0024] 2, the crushing device 38 is provided with pins 38a. The pins 38a are pierced into the material 6 to be treated packed in the sagger 4. As a result, the material 6 to be treated is crushed.

[0025] As shown in Fig. 3, the recovery device 40 includes an inverting unit 44 and a recovery container unit 46. The inverting unit 44 grips the sack 4. The inverting unit 44 turns the sack 4 upside down by rotating around a rotation axis AX0. When the opening 4a of the sack 4 faces downward, the material 6 to be treated is discharged from the sack 4 and recovered in the recovery container unit 46.

[0026] 1, the stacking device 42 stacks a plurality of sacks 4 vertically. The stacked sacks 4 are then transported to the inlet 16.

[0027] The heat treatment system 2 further includes a cleaning device 50, a filling device 52, and a surface leveling device 54. The cleaning device 50, the filling device 52, and the surface leveling device 54 are arranged in the second section 24. The cleaning device 50, the filling device 52, and the surface leveling device 54 are arranged in order from the upstream to the downstream of the return line 12. The cleaning device 50, the filling device 52, and the surface leveling device 54 are arranged between the recovery device 40 and the stacking device 42. The filling device 52 is arranged in the second section 24 located at the most upstream side of the three second sections 24. The filling device 52 is arranged in the second section 24 located at the center of the three second sections 24. The surface leveling device 54 is arranged in the second section 24 located at the most downstream side of the three second sections 24. The first section 22 is arranged between the cleaning device 50 and the filling device 52 and between the filling device 52 and the surface leveling device 54. Hereinafter, the cleaning device 50, the filling device 52 and the surface leveling device 54 may be collectively referred to as a processing device 56.

[0028] 4, the cleaning device 50 includes an inverting unit 60 and a cleaning unit 62. The inverting unit 60 grips the sagger 4. The inverting unit 60 turns the sagger 4 upside down by rotating around a rotation axis AX1.

[0029] The cleaning unit 62 is disposed at a position vertically facing the sagger 4 inverted by the inverting unit 60. The cleaning unit 62 ejects gas upward toward the opening 4a of the sagger 4. This causes the object 6 to be treated remaining inside the sagger 4 to be removed from the sagger 4.

[0030] 5, the filling device 52 includes a storage section 66 and a supply section 68. The storage section 66 stores the objects 6 to be treated before being fired, which are to be filled into the sagger 4.

[0031] The supply unit 68 is connected to the discharge port 66a of the storage unit 66. The supply unit 68 supplies a predetermined amount of the workpiece 6 from the opening 4a of the sagger 4 to the inside of the sagger 4. As a result, the workpiece 6 before firing is filled into the sagger 4.

[0032] 6, the surface leveling device 54 includes a rotating shaft 72 and a blade portion 74. The rotating shaft 72 rotates around an axis AX2.

[0033] The blade portion 74 is connected to the rotating shaft 72. The blade portion 74 rotates around the axis AX2 together with the rotating shaft 72. As a result, the surface of the material 6 to be treated filled in the sagger 4 is smoothed by the blade portion 74.

[0034] As shown in FIG. 7 and FIG. 8, the moving device 32 is disposed in each of the plurality of second sections 24. The moving device 32 is disposed between two adjacent first sections 22. The moving device 32 includes two beams 32a (or bars 32a). The beams 32a have an elongated shape in the conveying direction D1. The length of the beams 32a in the conveying direction D1 is 2.5 times or more the length of the sagger 4 in the conveying direction D1. This allows a plurality of saggers 4 to be placed on the moving device 32 (i.e., the beams 32a). The length of the beams 32a in the conveying direction D1 may be three times or more the length of the sagger 4 in the conveying direction D1. The length of the beams 32a in the conveying direction D1 may be four times or less the length of the sagger 4 in the conveying direction D1. The beam 32a can move in a conveying direction D1, a backward direction D2 opposite to the conveying direction D1, an upward direction D3 substantially perpendicular to the conveying direction D1, and a downward direction D4 opposite to the upward direction D3 by the operation of a drive device not shown.

[0035] The first transport device 28 includes an upstream roller conveyor 80 and a downstream roller conveyor 82. Each of the upstream roller conveyor 80 and the downstream roller conveyor 82 is made up of a plurality of rollers 31. The upstream roller conveyor 80 is disposed upstream of the moving device 32 on the return line 12. The downstream roller conveyor 82 is disposed downstream of the moving device 32 on the return line 12.

[0036] The upstream roller conveyor 80 includes a first upstream roller conveyor 84 and a second upstream roller conveyor 86. The first upstream roller conveyor 84 is disposed downstream of the return line 12 from the second upstream roller conveyor 86. The first upstream roller conveyor 84 is disposed between the moving device 32 and the second upstream roller conveyor 86. The width of the first upstream roller conveyor 84 is smaller than the distance between the two beams 32a (the distance between the two bars 32a).

[0037] The downstream roller conveyor 82 includes a first downstream roller conveyor 88 and a second downstream roller conveyor 90. The first downstream roller conveyor 88 is disposed upstream of the second downstream roller conveyor 90 on the return line 12. The first downstream roller conveyor 88 is disposed between the moving device 32 and the second downstream roller conveyor 90. The first downstream roller conveyor 88 is smaller than the distance between the two beams 32a (the distance between the two bars 32a).

[0038] The heat treatment system 2 further includes a stopper 94, a posture adjustment device 96, and a placement table 98. The stopper 94 is disposed downstream of the return line 12 from the first upstream roller conveyor 84. The stopper 94 is switched between a first position (see FIG. 8) and a second position (see FIG. 9). As shown in FIG. 8, when the stopper 94 is in the first position, it abuts against the sagger 4 on the first upstream roller conveyor 84. This causes the sagger 4 to stop on the first upstream roller conveyor 84. This prevents the sagger 4 from falling off the first upstream roller conveyor 84. As shown in FIG. 9, the second position is disposed below the first position (see FIG. 6). When the stopper 94 is in the second position, it does not abut against the sagger 4 on the first upstream roller conveyor 84.

[0039] As shown in FIG. 10, the posture adjustment device 96 is disposed in the first section 22. The posture adjustment device 96 includes a first pusher 96a and a second pusher 96b. The first upstream roller conveyor 84 is sandwiched between the first pusher 96a and the second pusher 96b. As the first pusher 96a and the second pusher 96b move in directions approaching each other, the sack 4 on the first upstream roller conveyor 84 is sandwiched between the first pusher 96a and the second pusher 96b. This adjusts the posture of the sack 4 on the first upstream roller conveyor 84.

[0040] The placement table 98 is disposed in the second section 24. The placement table 98 is disposed near the processing device 56. The stopper 94 is disposed between the placement table 98 and the first upstream roller conveyor 84. One sagger 4 can be placed on the placement table 98. The sagger 4 is processed on the placement table 98 by the processing device 56. Specifically, as shown in Figs. 4 to 6, the sagger 4 on the placement table 98 (see Fig. 10) is cleaned by the cleaning device 50, the object 6 to be processed is filled into the sagger 4 on the placement table 98 by the filling device 52, or the surface of the object 6 to be processed in the sagger 4 is leveled on the placement table 98 by the surface leveling device 54.

[0041] 7 to 13, a flow of moving a plurality of sacks 4 from the upstream roller conveyor 80 to the downstream roller conveyor 82 by the moving device 32 will be described. The description will start from the point where one sack 4 is placed on the placement table 98 and the other sacks 4 are moving on the upstream roller conveyor 80. At this point, the stopper 94 is located in the first position. Hereinafter, one sack 4 will be referred to as sack 4A, and the other sack 4 will be referred to as sack 4B.

[0042] As shown in Fig. 7, the sack 4A on the mounting table 98 is being treated by the treatment device 56. While the sack 4A is being treated, the rollers 31 rotate to move the sack 4B on the upstream roller conveyor 80 to the second upstream roller conveyor 86 and then to the first upstream roller conveyor 84. Thereafter, as shown in Fig. 8, the sack 4B comes into contact with the stopper 94 located at the first position.

[0043] 10, after the rollers 31 stop rotating, the first pusher 96a and the second pusher 96b move in a direction approaching each other. This adjusts the position of the sack 4B on the first upstream roller conveyor 84. Since the position of the sack 4B on the first upstream roller conveyor 84 is adjusted while the sack 4A on the mounting table 98 is being processed by the processing device 56, the time required to transport the sack 4 is shortened.

[0044] Next, as shown in FIG. 9, after the processing of the sagger 4A by the processing device 56 is completed, the stopper 94 moves from the first position to the second position.

[0045] 11, the moving device 32 (i.e., the beam 32a) moves from the initial position in the upward direction D3. As the beam 32a moves above the upper end of the mounting table 98 and the upper end of the first upstream roller conveyor 84, the sack 4A is removed from the mounting table 98 and placed on the beam 32a, and the sack 4B is removed from the first upstream roller conveyor 84 and placed on the beam 32a.

[0046] Next, as shown in Fig. 12, the beam 32a moves in the conveying direction D1. At this time, the front part of the beam 32a is located directly above the first downstream roller conveyor 88, and the rear part of the beam 32a is located directly above the mounting table 98. Due to the movement of the beam 32a in the conveying direction D1, the sacks 4A and 4B move simultaneously in the conveying direction D1 while the distance between the sacks 4A and 4B in the conveying direction D1 is maintained at a predetermined value (i.e., the sacks 4A and 4B are separated). In addition, the sack 4B moves away from the sack 4 behind the sack 4B (i.e., the sack 4 on the upstream roller conveyor 80). Since the sack 4A can be moved from the mounting table 98 and the sack 4B can be separated from the rear sack 4 at the same time, the time required to transport the sacks 4A and 4B is shorter than in a configuration in which the sacks 4A and 4B are transported separately. In addition, the attitudes of the sacks 4A and 4B are prevented from changing during transport. In addition, the distance between the sacks 4A and 4B is prevented from changing during transport. In addition, the transport speed of the beam 32a for the sacks 4A and 4B is faster than the transport speed of the rollers 31 for the sacks 4A and 4B.

[0047] Next, as shown in Fig. 11, the beam 32a moves in the downward direction D4. As the beam 32a moves below the upper end of the first downstream roller conveyor 88 and the upper end of the placement table 98, the sack 4A leaves the beam 32a and is placed on the first downstream roller conveyor 88, and the sack 4B leaves the beam 32a and is placed on the placement table 98. Thereafter, the sack 4A on the first downstream roller conveyor 88 moves to the first downstream roller conveyor 88 and the second downstream roller conveyor 90 by the rotation of the rollers 31. Also, since the position of the sack 4B does not change while being transported by the beam 32a, the sack 4B is processed by the processing device 56 (see Fig. 5) without having its position adjusted on the placement table 98.

[0048] Next, as shown in Fig. 5, the beam 32a moves in the backward direction D2. This causes the beam 32a to return to its initial position. The beam 32a moves in the upward direction D3, the conveying direction D1, the downward direction D4, and the backward direction D2 in sequence, so that the saggers 4 are continuously conveyed.

[0049] (effect) In the above embodiment, the sacks 4A and 4B are transported in the transport direction D1 by two beams 32a (two bars 32a) of the moving device 32. In this configuration, the postures of the sacks 4A and 4B do not change during transport. Therefore, it is not necessary to adjust the postures of the sacks 4A and 4B after transporting the sacks 4A and 4B. In addition, since the sacks 4A and 4B are transported by two beams 32a (two bars 32a), the distance between the sacks 4A and 4B is maintained. Furthermore, the transport speed of the sacks 4A and 4B by the beams 32a is faster than the transport speed of the sacks 4A and 4B by the rollers 31. This makes it possible to shorten the time required to transport the sacks 4A and 4B.

[0050] (Second Example) The second embodiment will be described with reference to FIG. 13. In the second embodiment, only the differences from the first embodiment will be described. As shown in FIG. 13, the crusher 38 and the recovery device 40 are arranged in the second section 24. The first section 22 is arranged between the second section 24 in which the crusher 38 is arranged and the second section 24 in which the recovery device 40 is arranged. The saggers 4 to be treated by the crusher 38 and the saggers 4 to be treated by the recovery device 40 are transported by the moving device 32 (beam 32a or bar 32a). The saggers 4 are transported by the moving device 32 from the upstream roller conveyor 80 (see FIG. 7) to the placement table 98 (see FIG. 7), and after being processed by the crusher 38 and the recovery device 40, are transported from the placement table 98 to the downstream roller conveyor 82. For this reason, it is not necessary to adjust the position of the saggers 4 on the placement table 98. Also, the sack 4B separates from the sack 4 behind it (i.e., the sack 4 on the upstream roller conveyor 80). Since the sack 4B can be separated from the sack 4 behind it at the same time that the sack 4A is moved from the mounting table 98, the time required to transport the sacks 4A and 4B is shortened.

[0051] (Modification) In one embodiment, the first conveying device 28 may convey a number of saggers 4 by means of a chain.

[0052] In one embodiment, the moving device 32 may transport three or more saggers 4 simultaneously.

[0053] Although specific examples of the technology disclosed in this specification have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. Furthermore, the technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology exemplified in this specification or drawings achieves multiple objectives simultaneously, and achieving one of the objectives itself has technical utility. [Explanation of symbols]

[0054] 2: Heat treatment system 4: Box 4A: Box 4B: Sagger 4a:Aperture 6: Workpiece 10: Heat treatment furnace 12: Return Line 14: Interior space 16: Loading entrance 18: Exit 20: Laura 22: First Section 24:Second Section 28: First conveying device 30: Second conveying device 31: Laura 32: Mobile device 32a: Beam, bar 34:Stage unstacking device 36: Cooling device 38: Crusher 40: Recovery device 42: Stacking device 50:Cleaning device 52: Filling device 54: Surface leveling device 56: Processing equipment 60: Reversal section 62:Cleaning department 66: Storage unit 66a: Outlet 68: Supply section 72: Rotating part 74: Wing 80: Upstream roller conveyor 82: Downstream roller conveyor 84: 1st upstream roller conveyor 86: 2nd upstream roller conveyor 88: 1st downstream roller conveyor 90: Second downstream roller conveyor 94: Stopper 96: Posture adjustment device 96a: 1st pusher 96b: 2nd pusher 98: Placement table AX1: Rotating axis AX2: Rotation axis D1: Transport direction D2: Reverse direction D3: Upward D4: Downward

Claims

1. a heat treatment furnace having an interior space with an inlet and an outlet, through which a plurality of saggers are conveyed from the inlet to the outlet; a return line disposed outside the heat treatment furnace and configured to transport the plurality of saggers from the discharge outlet to the discharge inlet; The return line is a first conveying device disposed in a first section and configured to convey the plurality of saggers; a second transport device disposed in a second section different from the first section and transporting the plurality of saggers by a beam or bar.

2. The apparatus further includes a processing device disposed in the second section for processing the saggers transported by the second transport device, The heat treatment system of claim 1, wherein the second transport device is capable of mounting the plurality of saggers arranged in a transport direction, and is provided with a moving device capable of moving in the transport direction, a backward direction opposite to the transport direction, an upward direction perpendicular to the transport direction, and a downward direction opposite to the upward direction.

3. The apparatus further includes a mounting table on which the sagger to be treated by the treatment apparatus is mounted, The heat treatment system according to claim 2 , wherein the moving device moves the sagger onto the mounting table when moving in the transport direction, the upward direction, and the downward direction.

4. The first conveying device is an upstream conveyor disposed upstream of the return line relative to the second conveying device; a downstream conveyor disposed downstream of the return line from the second conveying device, The heat treatment system of claim 3, wherein the moving device moves the sagger transported by the upstream conveyor onto the placement table and moves the sagger on the placement table onto the downstream conveyor when moving in the transport direction, the upward direction, and the downward direction.

5. The heat treatment system of claim 4 , further comprising a posture adjustment device for adjusting a posture of the sagger on the upstream conveyor.

6. 6. The heat treatment system according to claim 2, wherein the treatment device is selected from a group including a cleaning device for cleaning the sagger, a filling device for filling the workpiece into the sagger, and a surface leveling device for leveling the surface of the workpiece in the sagger.

Images