JPS6335739A - In-furnace conveyor - Google Patents

Abstract

PURPOSE:To simplify the construction of a device by intersecting the ends of the forward path and backward path of a furnace body and the ends of conveyors as direction changing paths disposed to said ends orthogonally with each other so that the transfer of materials to be heat-treated can be made at the intersected parts. CONSTITUTION:The ends of the forward path 200 and backward path 300 of the furnace body 100 and both ends of the conveyors 471-473 are intersected orthogonally with each other. The conveyors 471-473 act as the direction changing paths by which the direction of the materials 110 to be heat-treated are changed orthogonally. The materials 110 to be heat-treated are transferred from the end of the forward path 200 to the ends of the conveyors 471-473 by the vertical movement of the intersected parts. Then the materials are transferred to the end of the backward path 300 when said materials arrive at the opposite end. The materials 110 fed to the forward path of the furnace body are delivered from the backward path 300.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to an in-furnace conveyance device for heat treating metal, and in particular, an in-furnace conveyance device that continuously performs heat treatment steps in parallel reciprocating paths. It is related to. This type of in-furnace conveyance device is a technology that can be used in general logistics, without being limited to in-furnace applications.

[Prior art] As a conventional in-furnace conveying device of this type, the
The technique described in Japanese Patent No. 610 can be mentioned.

Fig. 3 is a horizontal cross-sectional view of the entire furnace of a conventional in-furnace transfer device, Fig. 4 is a vertical cross-sectional view of the main parts of the direction conversion chamber of the furnace as seen from the front, and Fig. 5 is also a side view of the furnace. FIG.

In the figure, a furnace body 1 has an outer shell made up of a refractory brick lining 2 and a surrounding heat-retaining layer 3. The partition wall 4 is located at the center of the furnace body 1, and there are an outgoing path 5,
A direction change path 6 and a return path 7 are formed. The track of the outbound route 5 and return route 7 consists of two rails 9 and 1 supported by support legs 8.
1 and a large number of trochanters 12 and 14, and the track of the direction change path 6 consists of a combination of a board 10 placed on the floor and a large number of spheres 13, as shown in FIG. ing. As a whole, it forms a substantially U-shaped trajectory.

The upper ends of the trochanters 12 and 14 and the upper ends of the sphere 13 are set on the same plane. Each of the trays 50 supported by the trochanters 12, 14 consists of a main body 51 and a vertical wall 53, each of which has two grooves 52 on its lower surface with a width equal to the width of the two rails 9, 11. The groove 52 is connected to the rails 9,1.
Since the tray 50 supported by the trochanter 12.14 is thicker than the difference between the upper end of the trochanter 12.14 and the upper end of the trochanter 12.14, the tray 50 is
It can be transferred without touching 1. The tray 50 supported by the spheres 13 in the direction changing path 6 can also be transferred without touching the board 10.

There are two sets of pushers 15.1 at the rear of the furnace body 1.
8 are arranged. This pusher 15.18 has piston rods 16, 19 passing through the furnace wall and a cylinder 17.2.
The pusher 1 consists of a combination of 0 and is located on the return path 7 side.
After the pusher 8 is activated, the pusher 15 located on the outward path 5 side is activated.

Electric heating devices 21 are installed on the floor between the support legs 8 on the outbound path 5 and the return path 7, each extending in a direction across the path, and three electric heating devices 2 extending parallel to the path are installed on the ceiling.
2.23 is placed, and a fan 24 is placed on the ceiling in that area.
．． 29 are provided. Said fan 24.29 is mounted on a vertical shaft 25.30 supported by a bearing jacket 26.31 of a water-cooled structure and is driven by a belt 28.33 from a roof-mounted electric motor 8127.32, It is designed to stir.

The conventional in-furnace conveyance device thus developed operates as follows.

The objects to be heat-treated are sequentially placed on the tray 50 in front 40, and the objects are placed on the furnace body 1 by a distance equal to the length of the tray 50.
are transferred sequentially within the The object to be heat-treated placed on the tray 50 is heated and heated gradually in the heat exchange chamber 41.
It is sent into the soaking chamber 42 and heated to a desired temperature in the heating/soaking chamber 42. When the object to be heat-treated placed on the tray 50 reaches the direction changing path 6, the bushing 15
The tray 50 is transferred to the return path 7 side by the piston rod 16 . At this time, the tray 50 that was on the return path 7 side of the direction change path 6 is transferred to the return path 7 by the piston rod 19 of the busher 18 and becomes empty. Therefore, the tray 50 that has passed to the return path 7 side of the direction change path 6 is pushed to the side of the return path 7. -18 to the piston rod 19 can be sent to the return path 7.

Tray 50 sent to return path 7 by piston rod 19
The object to be heat-treated placed thereon reaches the heat exchange chamber 44 while being heated in the heating/soaking chamber 43, and there, reaches the cooling chamber 45 while being gradually cooled. In this way, the heat treatment of the object to be heat treated is performed.

[Problems to be Solved by the Invention] However, in the above conventional furnace conveyance device, the direction of the tray 50 on which the object to be heat treated is placed is changed by the piston rod 16 of the pusher 15 and the piston rod 19 of the pusher 18. Therefore, the tray 50 needed to be strong enough to withstand it.

Therefore, as the tray 50, its strength is high, and
Something with a lot of heat was used. Therefore, the consumption of thermal energy of the tray 50 has a large effect on the running cost of the furnace, resulting in a problem in thermal efficiency.

Further, as mentioned above, since the tray 50 is manufactured using a material that is strong and generates a large amount of heat, there is a problem that the tray 50 itself is expensive.

In the conventional furnace conveyance device, the direction of the tray 50 on which the heat-treated material is placed is changed by the piston rod 16 of the pusher 15 and the piston rod 19 of the pusher 18. It is necessary to ensure a distance for the reciprocating movement of the piston rod 16 of the pusher 17-15 and the piston rod 19 of the pusher 18 (usually 2 (near M or more)), which poses a problem in terms of installation space.

Therefore, the present invention has been made to solve the above-mentioned problems, and aims to provide an in-furnace conveying device that makes the tray itself inexpensive, has good furnace thermal efficiency, and minimizes the installation space. It is.

[Means for Solving the Problems] The in-furnace conveyance device according to the present invention has a furnace main body having an outward path and a return path arranged in parallel for transferring materials to be heat treated. The disposed direction changing path is a conveyor that transports in a direction perpendicular to the direction of the outgoing path and the return path, and the ends of the 11th path and the return path of the furnace body and both ends of the conveyor that transfers in the perpendicular direction are The transport directions intersect each other at right angles, and the intersecting portions are configured to move up and down relative to each other.

[Operation] In the present invention, the ends of the forward and return paths of the furnace main body and both ends of the conveyor conveying in the perpendicular direction intersect with each other so that their transport directions are perpendicular to each other, and the intersecting portions are relative to each other. Since the conveyor is configured to move vertically, the material to be heat treated is transferred from the end of the outgoing path to the end of the conveyor that is transported in the direction perpendicular to the conveyor by vertical movement of one or both of them.
When it was transferred to the end of the return path, the material to be heat treated was again transferred from the end of the conveyor to the end of the return path, where it was transferred in a direction perpendicular to the end of the conveyor, by vertical movement of one or both of the conveyors, and then fed into the outward path of the furnace main body. The material to be heat treated is sent out from the return route.

[Example] Fig. 1 is a vertical sectional view of the main part of an embodiment of the present invention when cut parallel to the direction change path for direction change detection in the furnace main body, and Fig. It is a horizontal cross-sectional view of the main part when cut parallel to the direction changing path of the direction changing path in the furnace main body of the embodiment.

In the figure, the configuration of the furnace body 100 is basically the same as the conventional configuration, and includes an outgoing path 200 for transporting the material to be heat treated 110 through the front air, heat exchange collection, heating and soaking, and heating.・Equipped with return route 300 for transporting soaking/cooling room, heat exchanger, cooling air, etc. A direction changing path 400 is provided at the end of the forward path 200 where the heating/soaking is fully opened and at the end of the return path 300 on the side of the heating, soaking, and slow cooling chamber. On the outward path 200 and the return path 300, there is a roll drive transmission means 2 for transferring the heat-treated material 110 in the length direction of the outward path 200 and the return path 300.
10 or a roll shaft 1208 having a large diameter portion 120a rotated by the roll drive transmission means 310.

The roll drive transmission means 210 or the roll drive transmission means 310 is driven by a roll drive motor (not shown). Similarly, the direction change path 400 includes a roll drive transmission means 411 or a roll drive transmission means 4 for transporting the heat-treated material 110 in the length direction of the outbound path 200 and the return path 300.
It is connected to a roll shaft 420 having a large diameter portion 420a that can be rotated by 12 degrees. The roll drive transmission means 411
Alternatively, the roll drive transmission means 412 is driven by a roll drive motor 431 or a roll drive motor 432. The roll drive motor 431 and the roll drive transmission means 411 or the roll drive motor 432 and the roll drive transmission means 412 are mounted on a motor mounting base 441 or a seven-taper mount 442, respectively, to change the direction of the furnace body 100. The tube 400 is arranged on the outside of the furnace wall 130 . The motor mount 441 or the motor mount 442 is rotated by a jack drive motor 450, and a plurality of jacks 451, 452 move up and down in the vertical direction.
453.454. The drive input shaft side of the plurality of jacks 45] and 452 are connected to each other,
The shafts 453 and 454 of the plurality of jacks 451 and 452 are connected to each other by a T/foot 455 so that the vertical positions of the shafts 453 and 454 are uniform. The jack 451 is mounted on a jack mount 457 firmly attached to the base of the furnace body 100.
Similarly, the jack drive motor 45
0 and jack 452 are jack drive motor mounting base 45
It is attached to 8.

Therefore, the jack drive motor 450
1,452 shafts 453, 454 are moved up and down, the motor mounting bases 441, 442 are moved up and down, and the plurality of direction changing paths 400 whose both ends are connected to the roll drive transmission means 411 and the roll drive transmission means 412 are moved up and down. The roll shaft 420 is moved up and down.

Therefore, the tray 111 and the heat-treated material 110 placed on the plurality of roll shafts 420 of the direction changing path 400 move up and down on the plurality of roll shafts 420.

Between the plurality of roll shafts 420 of the direction changing path 400, a plurality of endless chain conveyors 471, 472° 473 are operated by a transfer main gear 461 and a transfer main gear 462.
It is arranged parallel to the roll axis 420. Furthermore,
Endless chain conveyors 471, 472, 473 are connected to guide gears 463, 464 and auxiliary gears 465, 466, 467
．． 468 and tension gear 469,
Tension gear 469 is biasing means 460 such as a spring.
Accordingly, each endless chain conveyor 471, 472, 473
Tension is applied to.

The plurality of endless chain conveyors 471, 472° 473
When the motor mounts 441 and 442 are raised, the top of the roll shafts 420a is located below the horizontal line of the large diameter portion 420a of the plurality of roll shafts 420 of the direction changing path 400. Moreover, when the motor mounting bases 441 and 442 are lowered, the direction change path 400
The horizontal line 420a of the large diameter portion of the plurality of roll shafts 420 is located below the top of the plurality of endless chain conveyors 471, 472, 473.

The shaft of the transfer main gear 461 is connected to a conveyor drive motor 480 attached to a motor mount 481, and the rotation of the conveyor drive motor 480 moves the endless chain conveyor 471, 472, 473 to the partition wall 11.
The vehicle is moved from the outbound route 200 to the inbound route 300, which is divided by 2.

The in-furnace transport device of this embodiment configured as described above can operate as follows.

First, the shafts 453, 454 of the jacks 451, 452 are raised by the rotation of the jack drive motor 450, the motor mounting bases 441, 442 are raised, and the direction changing path 400 is moved by the roll drive transmission means 411 and roll drive transmission means 412. The plurality of roll shafts 420 are raised.

At this time, a plurality of endless chain conveyors 471, 472,
The top portion 473 is located below the horizontal line of the large diameter portion 420a of the plurality of roll shafts 420 of the direction conversion path 400, and is not in contact with the tray 111 on which the material to be heat treated 110 is placed.

Then, due to the rotation of the roll shaft 120, the heat-treated material 110 placed on the tray 111, which has been transferred to the front chamber, the heat exchange chamber, the heating/soaking chamber, etc., moves on the outward path 200 in the direction of the direction change path 400. . When it moves onto the roll shaft 420 of the direction change path 400, it is detected by a detection means (not shown), and the roll drive motor 431 stops rotating the roll shaft 420. At this time, the material to be heat treated 110 is on the roll shaft 420 of the direction changing path 400.

In this state, the jack drive motor 450 is rotated to simultaneously drive the plurality of jacks 451 and 452. and,
Lower the shaft 453,454 and motor mount 4
41,442 is lowered.

Therefore, the plurality of roll axes 420 of the direction changing path 400
is lowered, and at this time, the lowering position of the roll shaft 420 is set so that the horizontal line 4208 of its large diameter portion is located below the top of the plurality of endless chain conveyors 471, 472° 473. Therefore, the heat-treated material 110 on the roll shaft 420 of the direction change path 400 is transferred onto the plurality of endless chain conveyors 471, 472, and 473 of the direction change path 400.

A plurality of endless chain conveyors 471 of the direction change path 400.
By the rotation of the conveyor drive motor 480, the tray 111 on which the ready-to-heat-treated material 110@ placed on the transferred ready-to-heat-treated material 110@ is transferred to the endless chain conveyor 471, 472, 473. Return trip 30
0 and is necessary at the end of the direction change path 400
Transferred to the 00 side. When the tray 111 carrying the heat-treated material 110 is transferred to the end of the direction change path 400 on the return path 300 side, the rotation of the conveyor drive motor 480 is stopped.

Then, the jack drive motor 450 is rotated in the opposite direction to the former, and a plurality of jacks 451 and 452 are simultaneously driven. Then, the shafts 453 and 454 are raised, and the motor mounting bases 441 and 442 are raised. Therefore, the plurality of roll shafts 420 of the direction changing path 400 rise, and at this time, the raised position of the roll shafts 420 is changed to 420 of the large diameter portion.
8 horizontal line indicates multiple endless chain conveyors 471, 47
2.473, the plurality of endless chain conveyors 4 of the direction change path 400
The heat-treated material 110 on the parts 71, 472, and 473 is transferred onto the large diameter part 420a of the roll shaft 420 of the direction changing path 400. Therefore, by the rotation of the roll shaft 420 and the roll shaft 120, the heat-treated material 110 placed on the tray 111 moves along the return path 300 in a direction away from the direction change path 400, and is heated, soaked, and slowly cooled. , heat exchangers, cooling chambers, etc. are transferred.

In addition, at this time, the installation interval and diameter of the large diameter part 120a and the small diameter part 120b of the roll shaft 120, and the roll shaft 42
Depending on the installation interval and diameter of the large diameter portion 4208 and the small diameter portion 420b, the material to be heat treated 110 can be directly transferred without being placed on the tray 111.

As described above, the in-furnace transfer device of this embodiment includes a furnace body 100 having an outward path 200 and a return path 300 arranged in parallel, and a direction changer provided at the ends of the outward path 200 and return path 300 of the furnace body 100. In the in-furnace conveyance device comprising a path 400, the direction changing path 400 is connected to an outgoing path 200 and a returning path 30.
The conveyor is a conveyor that transports the furnace body 100 in a direction perpendicular to the direction 0, and the transport directions of the ends of the forward path 200 and the return path 300 of the furnace main body 100 and both ends of the conveyor that transports the furnace body 100 in the perpendicular direction intersect with each other at right angles. , the material to be heat treated 11 on the outgoing path 200 due to the relative vertical movement of the intersection portion.
0 to the return route 300.

The in-furnace conveyance device of the above embodiment has a direction changing path 40.
The conveyor that transports 0 in the direction perpendicular to the direction of the outward path 200 and the backward path 300 is an endless chain conveyor 471, 4.
72,473, but when the present invention is put into practice, the endless chain conveyor 471, 472, 47
The conveyor belt is not limited to three, and may be a chain conveyor with an end. Alternatively, the type of conveyor may be a belt conveyor or a roller conveyor. Naturally, the number of conveyors does not necessarily need to be plural, depending on the type, as long as a single conveyor can stably transport the material to be heat treated 110.

In addition, as in this embodiment, an endless chain conveyor 471.4
72.473, the conveyor drive motor 480 can be used with only one rotation.

Further, in the in-furnace conveying device of the above embodiment, the ends of the forward path 200 and the backward path 300 and both ends of the conveyor conveying in the perpendicular direction intersect with each other at right angles, and the intersecting portions are relatively As a structure that moves up and down, the direction changing path 400
The roll shaft 420 is moved up and down. However, when implementing the present invention, endless chain conveyors 471, 472
．． 473 and the roll shaft 420 may be relatively vertically reversed, when carrying out the present invention, the endless chain conveyors 471, 472, and 473 can also be moved vertically. Also in this case, the endless chain conveyors 471, 472, 473 can be modified as described above.

[Effects of the Invention] As described above, the in-furnace conveyance device of the present invention includes a furnace body having an outward path and a return path arranged in parallel, and a direction changing path arranged at the ends of the outward path and the return path of the furnace main body. In the in-furnace conveying device, the direction changing path is a conveyor that transports in a direction perpendicular to the direction of the outgoing path and the incoming path, and the conveyor conveys in the direction perpendicular to the end of the outgoing path and the incoming path of the furnace body. Both ends of the conveyor are configured such that the transport directions intersect with each other at right angles, and the crossing parts move up and down relative to each other, thereby transporting the material to be heat-treated on the outward journey to the return journey. .

Therefore, there is no need to move the material to be treated using a pusher or the like as in the past, and the structure of the tray on which the material to be heat treated is placed does not require strength. A small device can be used, and thermal energy consumption can be reduced. Furthermore, considering the requirements for the tray, it can be made inexpensive.

Further, unlike the conventional in-furnace conveyance device, a bushing is not required, so the installation space can be reduced.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the main part when cut parallel to the direction changing path of the direction changing chamber in the furnace main body according to the embodiment of the present invention, and FIG.
The figure is a horizontal cross-sectional view of the main part of the direction-changing path in the furnace body according to the embodiment of the present invention when cut parallel to the direction-changing path, and FIG. 3 is a horizontal cross-sectional view of the entire furnace of a conventional furnace conveyance device. Figure, 4th
The figure is a vertical cross-sectional view of the main part of the furnace as seen from the front, and FIG. 5 is a vertical cross-sectional view of the furnace as seen from the side. In the figure, 100: Furnace body, 110: Material to be heat treated, 200
: outward route, 300: return route, 400: direction change route, 471, 472, 473: endless chain conveyor. In addition, in the figures, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (3)

[Claims] (1) In an in-furnace conveyance device comprising a furnace body having an outgoing path and a return path arranged in parallel, and a direction changing path provided at the ends of the outgoing path and the returning path of the furnace body, the direction changing path is connected to the outgoing path. and a conveyor that transfers the furnace body in a direction perpendicular to the direction of the return path, and furthermore, the ends of the outgoing path and the return path of the furnace body and both ends of the conveyor that transfers the furnace body in the perpendicular direction intersect each other at right angles, and An in-furnace conveyance device characterized in that a material to be heat treated on an outbound path is transferred to a return path by relatively moving up and down at an intersection. (2) The intersection of the ends of the outgoing and inbound paths of the furnace body and both ends of the conveyor that is conveyed in a direction perpendicular to the ends of the outgoing and inbound paths of the furnace body is configured by vertically moving the ends of the outgoing and inbound paths of the furnace body. An in-furnace conveyance device according to claim 1. (3) The intersections of the ends of the outgoing and incoming passes of the furnace body and both ends of the conveyor that is transferred in a direction perpendicular to the directions of the outgoing and incoming passes are constructed by vertically moving the conveyor that is transferred in a direction that is perpendicular to the directions of the outgoing and incoming passes. Claim 1 characterized in that
The in-furnace conveyance device described in .