JP5752291B1 - Heat treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat treatment facility for conveying an object to be processed heated in a heating chamber to a cooling chamber by a transfer unit, in addition to a delivery chamber for transferring the object to be processed between the heating chamber and the cooling chamber to the transfer unit. Even in the case where a warming room for keeping the heated object to be treated at a predetermined temperature is provided, the space for moving the transport unit can be reduced. In a heat treatment facility in which an object to be processed W heated in a heating chamber is transported to a cooling chamber by a transport unit, the object to be processed is transferred to the transport unit between the heating chamber and the cooling chamber. In providing a delivery chamber 31 for delivery and a warming chamber 32 for keeping the workpiece heated in the heating chamber at a predetermined temperature, the warming chamber is at least one side of the transfer unit in the moving direction with respect to the delivery chamber. Connected. [Selection] Figure 1

Description

  The present invention separately provides a heating chamber for heating the object to be processed and a cooling chamber for cooling the heated object to be processed, and the object to be processed heated in the heating chamber is transferred by the transport unit to the above-mentioned object. The present invention relates to a heat treatment facility that is transported to a cooling chamber. In particular, a delivery chamber that delivers the object to be processed between the heating chamber and the cooling chamber to the transport unit, and a heat retention that keeps the object to be processed heated in the heating chamber at a predetermined temperature. The heat treatment equipment provided with the chamber is characterized in that the space for moving the transfer unit can be reduced when the transfer unit is moved between the heating chamber and the cooling chamber. .

  Conventionally, as a heat treatment facility for carburizing and quenching, the workpieces are sequentially introduced into a long continuous furnace, and the workpieces are sequentially moved in the continuous furnace to heat the workpieces. , A continuous furnace type heat treatment facility that continuously performs heat treatment such as soaking, and a batch furnace that performs heat treatment such as heating and soaking without moving the object to be processed in an independent batch furnace Heat treatment equipment of the type is known.

  Here, in the case of a continuous furnace type heat treatment facility, the workpiece is continuously heat treated with a constant heat treatment pattern, so the productivity is good, but the heat treatment pattern such as temperature rise and temperature fall has become constant, As described above, there is a problem that it is not possible to flexibly respond to a request for producing various kinds of products in small quantities.

  On the other hand, in the batch furnace type heat treatment equipment, heat treatment is performed by changing the heat treatment conditions such as heating and soaking in one furnace, so that it takes a lot of time to process one workpiece. There was a problem of poor productivity.

  For this reason, in recent years, as shown in Patent Document 1, a heating chamber for heating an object to be processed and a cooling chamber for cooling the object to be processed are provided separately, and the heating chamber and the cooling chamber are cooled. An apparatus has been proposed in which an object to be processed heated in a heating chamber is transferred to the cooling chamber by a transfer unit that moves between the chambers.

  However, after connecting the transfer unit to the heating chamber and introducing the workpiece heated in the heating chamber into the transfer unit, the transfer unit is moved to the position of the cooling chamber and connected to the cooling chamber, When the heated object to be processed is introduced from the transfer unit into the cooling chamber, the heated object to be processed is introduced into the transfer unit, and then the heated object to be processed is introduced from the transfer unit into the cooling chamber. It takes time until the temperature of the workpiece heated during that time decreases, and when the workpiece is quenched in the cooling chamber, the temperature of the workpiece falls below a predetermined temperature, resulting in poor quenching. There was a problem that the quality of the product deteriorated.

  Further, in Patent Document 2, the transfer unit is provided with a transfer chamber for transferring an object to be processed between the heating chamber and the cooling chamber and facing the transfer chamber facing the heating chamber and the cooling chamber. A warming chamber that keeps the heated object to be treated in a position opposite to the side is provided continuously with the delivery chamber, and the object to be treated heated in the heating chamber is introduced into the warming room through the delivery chamber in the transport unit. In a state in which the object to be treated heated in this warming room is kept warm, the transfer unit is moved to the position of the cooling chamber, and the object to be treated in the warming room is moved from the warming room through the delivery chamber to the cooling chamber. Something that has been introduced in the past has been proposed.

  However, in this way, in the transport unit, when a warming chamber is provided at a position opposite to the facing side of the delivery chamber facing the heating chamber or the cooling chamber, the transport unit in a direction intersecting the moving direction of the transport unit. When the transfer unit is moved between the heating chamber and the cooling chamber, it is necessary to increase the space for movement, and there is a problem that the area of the heat treatment facility is increased. . Further, in this heat treatment facility, when a plurality of heating chambers are provided, a heating chamber is provided at a position opposite to the facing side of the delivery chamber facing the heating chamber or the cooling chamber, so that the heating chamber is defined as the moving direction of the transport unit. There is also a problem that it is impossible to arrange on both sides intersecting each other, and it is necessary to arrange a plurality of heating chambers along the moving direction of the transfer unit on one side of the transfer unit, and the length of the heat treatment equipment is increased. .

JP 2013-64184 A JP 2006-63363 A

  The present invention separately provides a heating chamber for heating the object to be processed and a cooling chamber for cooling the heated object to be processed, and the object to be processed heated in the heating chamber is transferred by the transport unit to the above-mentioned object. An object of the present invention is to solve the above-mentioned various problems in the heat treatment equipment that is transferred to the cooling chamber.

  In the present invention, a transfer chamber that transfers the object to be processed between the heating chamber and the cooling chamber to the transport unit, and a target object that is heated in the heating chamber In the case of providing a temperature-retaining room that is kept at a temperature, when moving the transfer unit between the heating chamber and the cooling chamber, it is an object to reduce the space for moving the transfer unit. is there.

In the present invention, in order to solve the problems as described above, a heating chamber for heating the workpiece and a cooling chamber for cooling the heated workpiece are provided separately, and the heating chamber In a heat treatment facility provided with a transport unit that moves between the cooling chambers and transports the workpiece heated in the heating chamber to the cooling chamber, the transport unit includes the heating chamber and the heating chamber. A delivery chamber for delivering the object to be processed to and from the cooling chamber, and a heat retaining room for keeping the object to be treated heated in the heating chamber at a predetermined temperature are provided. The transfer unit is connected to at least one side in the moving direction , the workpiece is connected to the transfer unit between the heating chamber and the cooling chamber, and the transfer chamber, and the workpiece is connected to the transfer chamber. With a warmhouse As a processing object transfer device to be transferred in the above, a transfer carriage and a rotation means for rotating the transfer carriage in the horizontal direction in the delivery chamber are provided, and the transfer carriage is moved in the horizontal direction in the delivery chamber by the rotation means. The transfer cart is moved between the delivery chamber and the heating chamber or the cooling chamber, and the object to be processed is transferred between the delivery chamber and the heating chamber or the cooling chamber. At the same time, the transfer carriage is moved between the delivery chamber and the greenhouse, and the object to be processed is transferred between the delivery chamber and the greenhouse .

  As in the heat treatment facility of the present invention, the transfer unit that moves between the heating chamber and the cooling chamber, the transfer chamber that transfers the object to be processed between the heating chamber and the cooling chamber, and the object heated in the heating chamber When providing a warming chamber that keeps the processed material at a predetermined temperature, if this warming chamber is connected to at least one side of the transfer unit with respect to the delivery chamber, the facing of the delivery chamber facing the heating chamber or the cooling chamber Compared to the case where a warming chamber is provided at the opposite side, the length of the transport unit in the direction intersecting the direction of movement of the transport unit is shortened, and the transport unit is moved between the heating chamber and the cooling chamber. It is possible to reduce the space for movement.

  Moreover, in the heat treatment equipment of the present invention, the above-mentioned thermal insulation can be connected to both sides of the transfer unit in the moving direction with respect to the above-mentioned delivery chamber.

  In addition, as in the heat treatment facility of the present invention, when the warming chamber is connected to the transfer chamber in the moving direction of the transfer unit, the transfer chamber can be connected to either side of the transfer unit that intersects the transfer direction of the transfer unit. The heating chamber and the cooling chamber can be provided. For this reason, in providing a plurality of heating chambers, the heating chamber can be divided and arranged on both sides with respect to the moving direction of the transport unit moving as described above, and even when a large number of heating chambers are arranged, The distance for moving the object to be processed by moving the transfer unit can be shortened, and the length of the heat treatment equipment in the moving direction of the transfer unit can be reduced.

  Here, in the heat treatment equipment of the present invention, when performing a carburizing process or the like by heat-treating an object to be processed in a non-oxidizing atmosphere, the transfer chamber in the transfer unit is sealed in the heating chamber and the cooling chamber. A connecting portion that is connected to the heating chamber, and the workpiece heated in the non-oxidizing atmosphere in the heating chamber is transferred from the connecting portion to the delivery chamber in the non-oxidizing atmosphere. While connecting the connecting portion to the cooling chamber, and in a non-oxidizing atmosphere, an object to be processed that is kept at a predetermined temperature in a non-oxidizing atmosphere is connected to the cooling chamber. Below, it can be made to guide to the cooling room from the connecting part via the delivery room. Note that the non-oxidizing atmosphere means an atmosphere in which a heated object to be processed is not oxidized, for example, a reduced pressure atmosphere such as a vacuum or an inert atmosphere using an inert gas or the like.

  Further, in the heat treatment equipment of the present invention, when carburizing treatment is performed by heat-treating an object to be treated in a non-oxidizing atmosphere as described above, sealed opening / closing doors are respectively provided in the heating chamber and the cooling chamber. And opening and closing the opening and closing doors when delivering the workpiece to and from the delivery chamber of the transport unit, and sealing between the delivery chamber and the storage room in the transport unit. When the workpiece is moved between the delivery chamber and the greenhouse, this door can be opened and closed.

  In the heat treatment facility according to the present invention, in the transfer unit that transfers the object to be processed heated in the heating chamber to the cooling chamber, with respect to the delivery chamber that transfers the object to be processed between the heating chamber and the cooling chamber, Since the warming chamber that keeps the workpiece heated in the heating chamber at a predetermined temperature is connected in the moving direction of the transport unit, it is located at a position opposite to the facing side of the delivery chamber facing the heating chamber or the cooling chamber. Compared to the case where a warming room is provided, the length of the transport unit in the direction crossing the direction of movement of the transport unit is shortened, and a moving space for moving the transport unit between the heating chamber and the cooling chamber. And the area of the heat treatment equipment can be reduced.

In the heat treatment equipment concerning one embodiment of the present invention, it is a schematic plan view showing the state where a plurality of heating rooms and cooling room were arranged in a straight line on one side which moves a conveyance unit. In the heat treatment equipment according to the above-described embodiment, an opening and closing door of a delivery chamber in a transfer unit is opened, and a schematic cross-sectional explanatory view showing a state in which an object to be processed is carried into the delivery chamber. In the heat treatment equipment according to the above embodiment, the opening and closing door of the delivery chamber into which the object to be processed is carried is closed, and a schematic cross-sectional explanatory view showing a state where the transfer unit is led to the position of the appropriate heating chamber. In the heat treatment equipment according to the above-described embodiment, the transfer unit is slid toward the heating chamber, and the delivery chamber is connected to the heating chamber by the connecting portion. In the heat treatment facility according to the above-described embodiment, a schematic cross-sectional view showing a state in which the opening / closing door of the delivery chamber and the opening / closing door of the heating chamber are opened and the object to be processed in the delivery chamber is carried into the heating chamber through the connecting portion. FIG. In the heat treatment facility according to the above embodiment, with the workpiece to be carried into the heating chamber, the door of the delivery chamber and the door of the heating chamber are closed, and the transfer unit is slid in the direction away from the heating chamber. It is a schematic cross-section explanatory drawing which showed the state. In the heat treatment facility according to the above embodiment, the transfer unit is guided to the position of the heating chamber where the workpiece is heat-treated, the transfer unit is slid toward the heating chamber, and the delivery chamber is connected to the heating chamber by the connecting portion. It is a schematic sectional explanatory drawing which showed the state made to do. In the heat treatment facility according to the above embodiment, the opening and closing door of the delivery chamber and the opening and closing door of the heating chamber are opened, and the object to be processed that has been heat-treated in the heating chamber is brought into the delivery chamber through the connecting portion. FIG. In the heat treatment facility according to the above-described embodiment, a state in which an opening / closing door between the delivery chamber and the warming chamber is opened, and the object to be processed which is heated and carried into the delivery chamber is carried into the warming chamber from the delivery chamber. It is a schematic sectional explanatory drawing shown. In the heat treatment facility according to the above-described embodiment, in a state where the heat-treated object is carried into the thermal storage room, each open / close door is closed, and the transfer unit is slid in the direction away from the heating chamber. It is a schematic cross-sectional explanatory drawing. In the heat treatment facility according to the above-described embodiment, the transported unit is moved to the position of the cooling chamber in a state where the heat-treated object is kept at a predetermined temperature in the temperature-retaining room, and the transport unit is directed to the cooling chamber. FIG. 6 is a schematic cross-sectional explanatory view showing a state in which the delivery chamber is connected to the cooling chamber by a connecting portion by sliding the transfer chamber. In the heat treatment facility according to the above-described embodiment, a schematic cross-section showing a state in which an opening / closing door between the delivery chamber and the warming chamber is opened, and a workpiece to be kept warm at a predetermined temperature is carried into the delivery chamber from the warming chamber. It is explanatory drawing. In the heat treatment facility according to the above-described embodiment, the opening / closing door of the delivery chamber and the opening / closing door of the cooling chamber are opened, and the object to be processed having a predetermined temperature carried into the delivery chamber is carried into the cooling chamber through the connecting portion. It is a schematic cross-sectional explanatory drawing which showed the state. In the heat treatment facility according to the above-described embodiment, a schematic cross-sectional description showing a state in which each open / close door is closed and the transfer unit is slid in a direction away from the cooling chamber in a state where the workpiece is carried into the cooling chamber. FIG. In the heat treatment equipment according to the above embodiment, it is a schematic plan view showing a modified example in which heating chambers are arranged on both sides of the transport unit to be moved. In the heat treatment facility according to the above-described embodiment, it is a schematic plan view showing a modified example in which the thermal insulation in the transfer unit is connected to both sides of the transfer unit in the moving direction with respect to the delivery chamber.

  Hereinafter, a heat treatment facility according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. The heat treatment equipment according to the present invention is not limited to the one shown in the following embodiment, and can be implemented with appropriate modifications within a range not changing the gist of the invention.

  In the heat treatment facility according to this embodiment, as shown in FIG. 1, a plurality of (three in the example shown in the figure) heating chambers 10 for heating the workpiece W in a non-oxidizing atmosphere are linearly arranged. A cooling chamber 20 for cooling the heated workpiece W is provided on one side of the heating chambers 10 arranged in this manner.

  And the traveling unit L which provided the conveyance unit 30 which conveys the to-be-processed object W heated in the said heating chamber 10 to the said cooling chamber 20 along the arrangement direction of the said heating chamber 10 and the cooling chamber 20 was provided. I am trying to run on the top.

  Here, in the transfer unit 30, a transfer chamber 31 is provided for transferring the workpiece W between the heating chamber 10 and the cooling chamber 20, and the transfer unit 30 moves in the transfer chamber 31. One side of the direction is connected to a warming chamber 32 for keeping the heated workpiece W at a predetermined temperature. In order to keep the heated object W to be heated at a predetermined temperature in the warming chamber 32, a heating device (not shown) is provided in the warming chamber 32.

  Further, in the heating chamber 10, a sealed opening / closing door 11 is provided at an opening for transferring the workpiece W to / from the delivery chamber 31 in the transfer unit 30, and the opening / closing door 11 is closed. Then, in the state where the inside of the heating chamber 10 is depressurized by a decompression device (not shown) and the inside of the heating chamber 10 is in a non-oxidizing atmosphere, the workpiece W is transferred from the delivery chamber 31 in the transport unit 30 to the heating chamber 10. The workpiece W carried in is heated by a heating device (not shown) provided in the heating chamber 10.

  Further, in the cooling chamber 20, a sealed opening / closing door 21 is provided at an opening for transferring the workpiece W between the transfer unit 30 and the delivery chamber 31, and the opening / closing door 21 is closed. Thus, the processing object W heated from the delivery chamber 31 in the transport unit 30 in the state in which the inside of the cooling chamber 20 is depressurized by a decompression device (not shown) and the inside of the cooling chamber 20 is in a non-oxidizing atmosphere. It is carried into the cooling chamber 20 and cooled in this cooling chamber 20. In order to cool the workpiece W in the cooling chamber 20, for example, an oil cooling bath (not shown) is provided in the cooling chamber 20, and the heated workpiece W is oil-cooled, so that the workpiece W is cooled. Can be hardened. The method for cooling the workpiece W is not limited to oil cooling, and any method such as water cooling or gas cooling may be used.

  Further, in the transfer unit 30, a connecting portion 33 that connects the delivery chamber 31 to the heating chamber 10 or the cooling chamber 20 in a sealed state to a portion of the delivery chamber 31 that faces the heating chamber 10 or the cooling chamber 20. In addition, a sealing door 34 is provided at the opening of the delivery chamber 31 provided with the connecting portion 33, and the opening between the delivery chamber 31 connected to the delivery chamber 31 is also sealed. An open / close door 35 is provided.

  And in connecting this connection part 33 to the heating chamber 10 or the cooling chamber 20, in this embodiment, in the position where the said delivery chamber 31 faces the said heating chamber 10 or the cooling chamber 20, said conveyance The entire unit 30 is slid toward the heating chamber 10 and the cooling chamber 20 to connect the connecting portion 33 to the heating chamber 10 and the cooling chamber 20.

  Moreover, in this embodiment, the workpiece transfer device 40 is provided in the transport unit 30, and the workpiece W is transferred to the delivery chamber 31, the heating chamber 10, and the cooling chamber 20 by the workpiece transfer device 40. In addition, the workpiece W is transferred between the delivery chamber 31 and the temperature-retaining room 32.

  Here, in this embodiment, as the workpiece transfer device 40, a transfer carriage 41 is provided in the delivery chamber 31, and a rotation plate 42 for rotating the transfer carriage 41 in the horizontal direction is provided. The rotating plate 42 is rotated by a rotating device 43 provided outside the delivery chamber 31 so that the transfer carriage 41 is switched between the direction toward the connecting portion 33 and the direction toward the warming chamber 32. Yes. The rotating device 43 may be any device that can rotate the rotating plate 42.

  Then, the transfer cart 41 is rotated by the rotating device 43 via the rotating plate 42, and the transfer cart 41 is connected to the delivery chamber 31 and the heating chamber 10 or the cooling chamber 20 through the connecting portion 33. The workpiece W is transferred between the delivery chamber 31 and the heating chamber 10 or the cooling chamber 20, and the transfer carriage 41 is moved between the delivery chamber 31 and the storage chamber 32. The workpiece W is transferred between the delivery chamber 31 and the greenhouse 32. The transfer carriage 41 may be any as long as it can move the workpiece W. For example, although not shown, a telescopic and other fork that can be moved up and down is provided in the delivery chamber 31, and this fork is extended and moved up and down to move the workpiece W to the delivery chamber 31 and will be described later. It can also be made to transfer between the position P which supplies the to-be-processed object W, the heating chamber 10, the cooling chamber 20, and the thermal storage 32.

  Here, in the heat treatment facility according to this embodiment, when the workpiece W is heat-treated in a non-oxidizing atmosphere to perform a carburizing treatment or the like, as shown in FIG. It moves to the position P to which the article W is supplied, opens the opening / closing door 34 on the connecting portion 33 side in the delivery chamber 31, and moves the delivery carriage 41 and the delivery chamber 31 and the object to be processed as indicated by arrows. The workpiece W is moved to the position P to which W is supplied, and the workpiece W is carried into the delivery chamber 31 by the transfer carriage 41. In the drawing, when the doors 11, 21, 34, 35 are closed, the doors 11, 21, 34, 35 are hatched.

  Then, after the workpiece W is carried into the delivery chamber 31 in this way, the open / close door 34 on the side of the connecting portion 33 is closed, and in this state, as shown in FIG. The inside of the delivery chamber 31 is depressurized by a decompression device (not shown), and the inside of the delivery chamber 31 is the same non-oxidizing atmosphere as the inside of the heating chamber 10. To.

  Next, as shown in FIG. 4, the entire transport unit 30 is slid toward the heating chamber 10 as indicated by an arrow to connect the connecting portion 33 to the heating chamber 10. In this state, the delivery chamber 30 The connecting portion between 31 and the heating chamber 10 is depressurized by a decompression device (not shown), and the space S of this connecting portion is made into a non-oxidizing atmosphere similar to the inside of the heating chamber 10 and the delivery chamber 31. The connecting portion 33 is connected to the heating chamber 10 in a sealed state as described above, and the non-oxidizing atmosphere is maintained in the space S of the connecting portion.

  In this state, as shown in FIG. 5, the opening / closing door 11 in the heating chamber 10 connected by the connecting portion 33 and the opening / closing door 34 on the connecting portion 33 side in the delivery chamber 31 are opened, and the transfer carriage described above is opened. 41 is moved between the delivery chamber 31 and the heating chamber 10, and the workpiece W is carried into the heating chamber 10.

  Thereafter, as shown in FIG. 6, the door 11 in the heating chamber 10 connected by the connecting portion 33 is closed, and the workpiece W carried into the heating chamber 10 is subjected to a heat treatment (for example, a vacuum carburizing treatment). In addition, after closing the open / close door 34 on the connecting portion 33 side in the delivery chamber 31 and returning the space S of the connecting portion to atmospheric pressure, the entire transport unit 30 is removed from the heating chamber 10. Try to slide away.

  And if needed, the said conveyance unit 30 is made to drive between the position P to which the to-be-processed object W is supplied, and each heating chamber 10, and it repeats the above operation and performs several heating chambers. The workpiece W is carried into the chamber 10, and the workpiece W is heat-treated in a non-oxidizing atmosphere in each heating chamber 10.

  In addition, after the workpiece W is heat-treated in the heating chamber 10 as described above, when the workpiece W is cooled in the cooling chamber 20, as shown in FIG. In the same manner as when the workpiece W is introduced into the heating chamber 10 where the workpiece W is heat-treated and the workpiece W is carried into the heating chamber 10, the inside of the delivery chamber 31 is the same non-oxidizing atmosphere as that of the heating chamber 10. In this state, the entire transport unit 30 is slid toward the heating chamber 10 to connect the connecting portion 33 to the heating chamber 10, and the space S of the connecting portion between the delivery chamber 31 and the heating chamber 10 is depressurized. Thus, the connecting portion is made into a non-oxidizing atmosphere similar to that in the heating chamber 10 and the delivery chamber 31. Note that in this case, the inside of the temperature-retaining room 32 is also decompressed by a decompression device (not shown) so that a non-oxidizing atmosphere similar to that in the heating chamber 10 and the delivery chamber 31 is obtained.

  Then, as shown in FIG. 8, the opening / closing door 11 in the heating chamber 10 connected by the connecting portion 33 and the opening / closing door 34 on the connecting portion 33 side in the delivery chamber 31 are opened, and the transfer carriage 41 is opened. Is moved between the delivery chamber 31 and the heating chamber 10, and the workpiece W heated in the heating chamber 10 is carried into the delivery chamber 31. Further, as shown in FIG. 9, while opening the opening / closing door 35 between the delivery chamber 31 and the warming room 32, the opening / closing door 34 on the connecting portion 33 side in the delivery chamber 31 is closed, The transfer carriage 41 in which the workpiece W is carried into the delivery chamber 31 as described above is rotated in the direction from the delivery chamber 31 toward the storage chamber 32 by the rotating device 43 through the rotation plate 42, and this transfer is performed. The carriage 41 is moved between the delivery chamber 31 and the storage chamber 32, and the heat-treated workpiece W is carried into the storage chamber 32 from the delivery chamber 31.

  Next, after the workpiece W thus heat-treated is carried into the thermal storage chamber 32, the space S of the connecting portion is returned to atmospheric pressure, and then the delivery is performed as shown in FIG. The open / close door 35 between the chamber 31 and the thermal storage chamber 32 is closed, and the entire transfer unit 30 is slid in a direction away from the heating chamber 10.

  And in the state which kept the to-be-processed object W at the predetermined temperature in the said thermal storage 32, the said conveyance unit 30 is moved to the position of the said cooling chamber 20 along the driving rail L, FIG. As shown, the entire transport unit 30 is slid toward the cooling chamber 20 to connect the connecting portion 33 to the cooling chamber 20 and depressurize the space S of the connecting portion between the delivery chamber 31 and the cooling chamber 20. Thus, the connecting portion is made into a non-oxidizing atmosphere similar to that in the delivery chamber 31 or the cooling chamber 20. In addition, while moving the conveyance unit 30 to the position of the cooling chamber 20 and connecting the connecting portion 33 to the cooling chamber 20 in this way, the workpiece W is kept at a predetermined temperature in the temperature-retaining room 32. Thus, the temperature is prevented from decreasing.

  Next, as shown in FIG. 12, the opening / closing door 35 between the delivery chamber 31 and the storage chamber 32 is opened, and the transfer carriage 41 is moved between the delivery chamber 31 and the storage chamber 32, The object to be processed W kept at a predetermined temperature in the warming room 32 is carried into the delivery chamber 31. Then, as shown in FIG. 13, the open / close door 35 between the delivery chamber 31 and the storage chamber 32 is closed, while the open / close door 34 on the connection portion 33 side in the delivery chamber 31 is connected to the connection portion 33. The opening and closing door 21 in the cooling chamber 20 is opened, and the transfer carriage 41 in which the workpiece W is carried into the delivery chamber 31 as described above via the rotating plate 42 by the rotating device 43 is transferred to the delivery chamber. The transfer carriage 41 is moved between the delivery chamber 31 and the cooling chamber 20 to rotate the workpiece W kept at a predetermined temperature from the delivery chamber 31. It is made to move in the chamber 20.

  The open / close door 35 between the delivery chamber 31 and the thermal storage chamber 32 is opened and closed as described above, and the object to be processed W kept at a predetermined temperature in the thermal storage chamber 32 by the transfer carriage 41. The operation of rotating the transfer carriage 41 in which the workpiece W is transferred into the delivery chamber 31 in the direction from the delivery chamber 31 toward the cooling chamber 20 by the rotation device 43 and carried in the delivery chamber 31 is performed as described above. It is also possible to connect the connecting portion 33 to the cooling chamber 20 so that the space S in the connecting portion between the delivery chamber 31 and the cooling chamber 20 is decompressed to a non-oxidizing atmosphere. If it does in this way, time until it guides to the cooling chamber 20 the to-be-processed object W heat-retained in predetermined temperature in the heat retention chamber 32 can be shortened, and productivity improves.

  After that, as shown in FIG. 14, the open / close door 21 in the cooling chamber 20 connected by the connecting portion 33 is closed, and the workpiece W carried into the cooling chamber 20 is rapidly cooled in an oil cooler (not shown) or the like. The workpiece W is quenched, while the open / close door 34 on the connection portion 33 side in the delivery chamber 31 is closed to return the space S of the connection portion to atmospheric pressure, The entire transport unit 30 is slid in a direction away from the cooling chamber 20.

  And even when the workpiece W is heat-treated in the other heating chamber 10, the transport unit 30 is caused to travel between the heating chamber 10 and the cooling chamber 20 in which the workpiece W is heat-treated, The operation as described above is performed, and the workpiece W heated in each heating chamber 10 is sequentially carried into the cooling chamber 20 by the transport unit 30 as described above and cooled.

  Here, in this embodiment, as described above, the storage unit 32 of the transfer unit 30 is transferred to the delivery chamber 31 that transfers the workpiece W between the heating chamber 10 and the cooling chamber 20. Since it is connected and provided in the moving direction (direction along the traveling rail L), the warming chamber 32 does not protrude to the opposite side of the heating chamber 10 or the cooling chamber 20, and the transport unit 30 is connected to the heating chamber 10 And the space for movement for moving between the cooling chamber 20 can be reduced.

  In this embodiment, the plurality of heating chambers 10 are linearly arranged on one side of the transport unit 30 that is moved along the traveling rail L. However, as shown in FIG. It is also possible to arrange the heating chambers 10 on both sides of the transport unit 30 that is moved along. When the heating chambers 10 are arranged on both sides of the transport unit 30 moved in this way, the delivery chamber W is delivered between the delivery chamber 31 of the transport unit 30 and the heating chambers 10 on both sides. A delivery portion 33 that connects the heating chamber 10 to the heating chamber 10 in a sealed state, and a sealing door 34 that opens and closes the opening of the delivery chamber 31 provided with the connection portion 33 faces the heating chambers 10 on both sides. Provided on both sides of the chamber 31.

  And, when the heating chamber 10 is arranged on both sides of the transport unit 30 to be moved in this way, the distance in the moving direction of the transport unit 30 can be shortened, and a large number of heating chambers 10 can be arranged, Even in the case where a large number of heating chambers 10 are arranged, the length of the heat treatment equipment can be shortened. Although not shown, the cooling chambers 20 can be arranged on both sides of the transport unit 30 that is moved along the traveling rail L.

  Further, in this embodiment, the warming chamber 32 in the transport unit 30 is merely connected to the delivery chamber 31 on one side in the moving direction of the transport unit 30, but as shown in FIG. The warming chamber 32 in the transport unit 30 is connected to the delivery chamber 31 on both sides in the moving direction of the transport unit 30, and the heat-treated object W is kept warm at a predetermined temperature in the warm chambers 32 on both sides. It can also be done.

In this embodiment, as the workpiece transfer device 40, the transfer carriage 41 that transfers the workpiece W as described above is provided, and the rotating plate 42 that rotates the transfer cart 41 in the horizontal direction is provided. Although the rotating plate 42 is rotated by the rotating device 43, the workpiece transfer device 40 is not limited to this .

  Further, in this embodiment, in the transport unit 30, the sealed opening / closing door 34 is provided at the opening of the delivery chamber 31 provided with the connecting portion 33, but the opening / closing door 34 is not provided. It can also be. However, when the opening / closing door 34 is eliminated, when the workpiece W is transferred by connecting the delivery chamber 31 to the heating chamber 10 or the cooling chamber 20 by the connecting portion 33, the delivery chamber 31 is depressurized in advance. Since the oxidizing atmosphere cannot be formed, the wide delivery chamber 31 is decompressed together with the space S of the connection portion in a state in which the delivery chamber 31 is connected to the heating chamber 10 and the cooling chamber 20 by the connecting portion 33, and non-oxidized. It becomes necessary to create an atmosphere, and it takes time to create a non-oxidizing atmosphere.

DESCRIPTION OF SYMBOLS 10 Heating chamber 11 Opening / closing door 20 Cooling chamber 21 Opening / closing door 30 Transfer unit 31 Delivery chamber 32 Greenhouse 33 Connecting part 34, 35 Opening / closing door 40 Material transfer device 41 Transfer carriage 42 Rotating plate 43 Rotating device L Running rail P Covered Position to supply processed material S Space of connecting part W Material to be processed

Claims (5)

A heating chamber for heating the object to be processed and a cooling chamber for cooling the object to be processed are provided separately and moved between the heating chamber and the cooling chamber to be heated in the heating chamber. In a heat treatment facility provided with a transfer unit for transferring the processed object to the cooling chamber, a delivery chamber for transferring the processed object between the heating chamber and the cooling chamber to the transfer unit; and a thermal insulation chamber for thermal insulation of the workpiece which has been heated in the heating chamber at a predetermined temperature is provided, and ligated to the heat insulating chamber on at least one side of the movement direction of the transport unit relative to said delivery chamber Rutotomoni, As a workpiece transfer device for transferring the workpieces between the heating chamber and the cooling chamber and the delivery chamber and transferring the workpieces between the delivery chamber and the storage chamber to the transport unit. , Transport cart and Rotating means for rotating the transfer carriage in the delivery chamber in the horizontal direction, and rotating the transfer carriage in the horizontal direction in the delivery chamber by the rotation means so that the transfer carriage is moved in the delivery chamber. And between the heating chamber or the cooling chamber, the workpiece is transferred between the delivery chamber and the heating chamber or the cooling chamber, and the transfer carriage is transferred between the delivery chamber and the storage room. The heat treatment equipment is characterized in that the object to be treated is transferred between the delivery room and the thermal storage room . The heat treatment equipment according to claim 1 , wherein the thermal insulation in the transfer unit is connected to both sides of the transfer unit in the moving direction with respect to the delivery chamber. In the heat treatment equipment according to claim 1 or 2 , when a plurality of the heating chambers are provided, the heating chambers are arranged on both sides with respect to the moving direction of the transfer unit moving as described above. Heat treatment equipment. The heat treatment equipment according to any one of claims 1 to 3 , wherein a connecting portion for connecting the delivery chamber in the transfer unit to the heating chamber and the cooling chamber in a sealed state is provided, and the connecting portion is While being connected to the heating chamber, the object to be processed heated in a non-oxidizing atmosphere in the heating chamber is led from the connecting portion to the holding room via the delivery chamber in the non-oxidizing atmosphere, The connecting portion is connected to the cooling chamber, and the object to be processed which is kept at a predetermined temperature in a non-oxidizing atmosphere in the heat-retaining room is passed through the delivery chamber in the non-oxidizing atmosphere. A heat treatment facility characterized in that it is led from the connecting portion to the cooling chamber. 5. The heat treatment facility according to claim 1 , wherein each of the heating chamber and the cooling chamber is provided with a hermetic opening / closing door, and the object is processed between the transfer unit and the delivery chamber. When delivering an object, each of the opening and closing doors is opened and closed, and a hermetic opening and closing door is provided between the delivery chamber and the storage room in the transfer unit. Heat treatment equipment characterized by opening and closing the door when moving the object to be treated.

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