JP7162996B1 - Heat treatment equipment - Google Patents

Abstract

A charging device for charging an object to be processed, a plurality of processing devices for heat-treating the object to be processed, an extraction device for extracting the object to be processed which has been heat-treated in the processing device, and an apparatus for charging the object to be processed. To efficiently heat-treat an object to be processed having different processing times in a heat-treating facility equipped with a conveying device for moving between a processing device and an extraction device.
SOLUTION: In the case of heat-treating an object to be processed W before heat treatment that has been charged from a charging device 10 to a conveying device 40 in a processing device 20, a control device 50 controls the time for heat-treating the object to be processed in each processing device. is adjusted to a time obtained by subtracting the replacement time from a multiple of the transport cycle time TS in which the material to be processed is moved between the charging device, the processing device, and the extraction device 30 by the transport device, and the material to be processed in each processing device is controlled for each transport cycle time so that the times at which the heat treatment of the object to be processed in each processing apparatus is completed do not overlap based on the time during which the heat treatment is performed.
[Selection drawing] Fig. 2

Description

The present invention provides a charging device for charging an object to be heat-treated, a plurality of processing devices for heat-treating the object, an extracting device for extracting the object heat-treated in the processing device, and the above-mentioned charging device. a conveying device that moves between the apparatus, the processing device, and the extraction device, loads the material to be processed in the charging device into the processing device, and loads the material to be processed that has been heat-treated in the processing device into the extraction device; It relates to the heat treatment equipment provided. In particular, the object to be processed before heat treatment is loaded from the charging device into the conveying device, the object to be processed is loaded into each processing device by the transport device, heat treated, and the object to be processed is transported from each processing device. When the objects to be treated are successively heat-treated by being loaded into the apparatus and having the objects to be heat-treated extracted from the conveying device to the extraction device, various objects to be treated having different treatment times are subjected to the above-described heat treatment. Even in the case of heat treatment as described above, the workpieces before heat treatment are transported into the processing equipment by the transport equipment at an appropriate timing, and the workpieces with different processing times are efficiently transported in the heat treatment equipment in each processing equipment. It is characterized in that a chart is automatically created and controlled so that the times when the heat treatment of the object to be processed is completed do not overlap.

Conventionally, as a heat treatment facility for heat-treating an object to be treated, the object to be treated is sequentially charged into a long continuous treatment furnace, and the object to be treated is sequentially moved in the continuous treatment furnace. A continuous heat treatment facility that continuously performs heat treatment such as heating, soaking, cooling, etc., and an independent batch type processing equipment are charged with the material to be treated, and in this processing equipment , and batch-type heat treatment facilities are known in which heat treatments such as heating, soaking and cooling are individually performed on the above-mentioned objects to be treated.

In recent years, as shown in Patent Document 1, a charging device for charging an object to be heat-treated, a plurality of processing devices for heat-treating the object, and an object to be heat-treated in the treatment device and the charging device, the processing device, and the extraction device, the material to be processed in the charging device is charged into the processing device, and the material to be processed is heat-treated in the processing device A heat treatment facility is shown with a conveying device for loading the extractor.

Further, as shown in Patent Document 2, a heat-retaining chamber and a waiting room are provided in a conveying device, and an operation of extracting an object to be processed that has been heat-treated in a processing device to the conveying device, and transferring the object to be processed from the conveying device to each of the conveying devices. A heat treatment facility is shown that can be replaced by continuously performing the operation of charging to.

Here, in the heat treatment equipment, when the processing time of the material to be processed is the same in each processing apparatus, the material to be processed is sequentially charged into each processing apparatus from the conveying apparatus at regular time intervals. The objects to be treated which have been heat-treated in this way are sequentially charged from each processing device to a conveying device at intervals of a predetermined time, and the objects to be treated charged to the conveying device are sequentially sent to the extraction device. By extracting them one by one, the objects to be processed can be processed one after another at a constant time.

In recent years, however, the number of products to be treated has increased, and it has become necessary to continuously produce products with different heat treatment times without regularity. The objects to be processed having different processing times are transported from the conveying device to the respective processing devices one by one and heat-treated, and the heat-treated objects are transported from the respective processing devices. When the material is loaded into the device and the material to be processed loaded into the transport device is extracted by the extraction device, since there is only one transport device, the material loaded into the transport device from the charging device In some cases, the operation time for transporting the material to be processed and loading it into the processing apparatus and the operation time for transporting the material heat-treated in another processing apparatus to the extraction apparatus by the transportation apparatus and extracting it by the extraction apparatus may overlap. be.

In addition, since the transfer cycle time described later requires a certain amount of time from the start of the operation to the completion of the operation, if the material to be processed with different heat treatment times is charged into the processing apparatus regardless of the transfer cycle time, When the time of execution and the time of extraction from each processing device are close, these operation times overlap.

In such a case, if priority is given to the operation of transporting the workpiece loaded in the transport device and loading it into the processing equipment, it becomes necessary to delay the timing of extracting the workpiece that has been heat-treated in the processing equipment. While there is a problem that the heat treatment time of the material to be processed becomes longer than planned and product defects occur, if priority is given to the operation of conveying the material to be processed that has been heat-treated in the processing apparatus and extracting it to the extraction apparatus, It becomes necessary to delay the timing of charging the workpiece from the equipment into the processing equipment, and the time when the processing equipment is idle increases, resulting in a problem of reduced productivity. The timing of transporting the workpieces loaded into the conveyor from the equipment and loading them into each processing equipment and the timing of extracting the workpieces that have been heat-treated in each processing equipment become very complicated. It has become very difficult to create an efficient transfer time chart for heat treatment equipment in each treatment equipment.

Japanese Patent No. 5669981 Japanese Patent No. 5686918

The present invention provides a charging device for charging an object to be heat-treated, a plurality of processing devices for heat-treating the object, an extracting device for extracting the object heat-treated in the processing device, and the above-mentioned charging device. a conveying device that moves between the apparatus, the processing device, and the extraction device, loads the material to be processed in the charging device into the processing device, and loads the material to be processed that has been heat-treated in the processing device into the extraction device; An object of the present invention is to solve the above problems in the heat treatment equipment provided.

That is, in the heat treatment facility as described above, the object to be treated before heat treatment is charged from the charging device into the conveying device, and the object to be treated is charged into each processing device by the conveying device. After heat treatment, the objects to be treated are loaded from each processing apparatus into a conveying device, and the heat-treated objects are extracted from the conveying device to the extraction device, so that the objects to be treated are sequentially heat-treated, Even in the case of heat-treating various workpieces with different processing times as described above, the workpieces before heat treatment are transported into the processing apparatus by the conveying device at an appropriate timing, and the workpieces with different processing times are processed. An object of the present invention is to automatically create a transfer time chart for efficient heat treatment equipment in each treatment apparatus and to control the time at which the heat treatment of an object to be treated is completed so as not to overlap.

In the heat treatment equipment of the present invention, in order to solve the above-described problems, a charging device for charging an object to be heat treated, a plurality of processing devices for heat-treating the object, and It moves between the extraction device for extracting the material to be processed, the charging device, the processing device and the extraction device, and the material to be processed in the charging device is charged into the processing device and heat-treated in the processing device. A heat treatment facility comprising a conveying device for charging an object to be processed into an extraction device, wherein the conveying device transports the object to be treated between the processing device, the charging device, and the extraction device. a heat-retaining chamber for keeping at a high temperature the material to be processed that has been heat-treated in the processing apparatus and charged into the transfer chamber; a waiting room for waiting before charging to the processing apparatus, a time for charging the workpiece before heat treatment from the charging apparatus to the waiting room through the transfer chamber in the transfer apparatus; and the transfer. The time for moving the apparatus to a processing device for extracting the heat-treated object, the time for loading the heat-treated object heat-treated in the processing device into the heat retaining chamber through the transfer chamber of the transfer device, and the transfer device The exchange time during which the material to be processed that has been charged into the waiting room before being heat-treated is loaded into the processing apparatus through the transfer chamber, and the transportation in which the material to be heat-treated has been charged to the heat-retaining chamber The time for moving the apparatus to the position of the extracting device, the time for charging the heat-treated material charged into the heat retaining chamber of the conveying device into the extracting device through the conveying chamber, and the heat-treated The transfer cycle time is defined as the total time of the time for moving the conveying device that loaded the object to be processed into the extracting device to the position of the charging device, and the time for heat-treating the object to be processed in each of the above-mentioned processing devices. , each of which is adjusted by the control device to a time obtained by subtracting the replacement time from the multiple of the transfer cycle time, and the workpiece before heat treatment is charged from the charging device to the processing device via the transfer device. In the heat treatment, the control device automatically creates a transfer time chart for the heat treatment equipment based on the time for heat treatment of the object to be treated in each treatment equipment. Control is performed for each transfer cycle time so that the heat treatment completion times do not overlap.

Here, based on the time for heat-treating the object to be processed in each processing device, the control device controls the time for each transfer cycle time so that the times at which the heat treatment of the object to be processed in each processing device is completed do not overlap. In the control, the heat treatment completion time of the workpiece to be heat-treated after being charged from the charging device to the processing equipment via the above-mentioned conveying device is the heat treatment of each workpiece that is heat-treated in another processing equipment. If it overlaps with the completion time, the operation of loading the workpiece from the charging device to the processing device via the transfer device is not performed, and the judgment is made again after one transfer cycle time. (1) performs an operation of loading the material to be processed from the loading device into the processing device via the conveying device.

Further, the heat treatment completion time of the workpiece to be heat-treated after being charged from the charging apparatus to the processing apparatus via the conveying apparatus overlaps with the heat treatment completion time of each workpiece being heat-treated in another processing apparatus. In the above-mentioned case, the object to be treated that has undergone heat treatment is loaded from the treatment apparatus in which the object to be treated that has undergone heat treatment exists in the above-mentioned treatment apparatus through the transfer chamber of the transfer device into the temperature-retaining chamber, and is subjected to heat treatment by the transfer device. is loaded into the extraction device.

In addition, as a method of not performing the operation of charging the workpiece from the charging device to the conveyor via the conveyor as described above, there is a method of loading the workpiece from the charging device to the conveyor. In addition to preventing the material from entering, it is also possible to prevent the material from being loaded from the waiting room into the processing apparatus in a state in which the material to be processed has been loaded from the charging apparatus into the waiting room of the conveying apparatus.

With this arrangement, even when the objects to be processed are heat-treated for different processing times in the respective processing apparatuses, the heat-treated objects to be processed can be appropriately taken out from the processing equipment in which the heat treatment of the objects to be processed has been completed. , the object to be processed before heat treatment can be loaded into the processing apparatus from the charging device via the transfer device at an appropriate timing corresponding to the transfer cycle time and heat treated, and the processing time is different. Also, it becomes possible to create a transport time chart for heat treatment equipment for efficient heat treatment in each processing equipment, and the control device of the heat treatment equipment of the present invention automatically creates such an efficient transport time chart for heat treatment equipment. be able to create.

Further, in the heat treatment equipment of the present invention, after the material to be processed that has been heat-treated in the processing apparatus as described above is loaded from the conveying apparatus into the extraction apparatus, the material to be heat-treated is cooled (for example, quenching treatment), and the time required for cooling the workpiece heat-treated in this extraction device and completing the carry-out from the extraction device is shorter than the transfer cycle time, and in the processing device The objects to be heat-treated can be sequentially loaded into the extracting device from the conveying device.

In the heat treatment equipment of the present invention, as described above, the time for heat-treating the object to be treated in each treatment apparatus is adjusted by the control device to the time obtained by subtracting the replacement time from the multiple of the transfer cycle time. When the object to be treated before heat treatment is loaded from the apparatus into the treatment equipment via the conveying device and subjected to heat treatment, the control device controls the heat treatment time of the object to be treated in each treatment equipment. Since the times at which the heat treatment of the object to be processed is completed in each of the processing apparatuses do not overlap and the control is performed for each transfer cycle time, even when the object to be processed is heat-treated for a different processing time in each of the processing apparatuses, Also, the heat-treated object can be appropriately taken out from the processing apparatus in which the heat treatment of the object has been completed at a timing corresponding to the transfer cycle time, and the object to be processed before heat treatment can be transferred during the transfer cycle time. Efficient transportation of heat treatment equipment in each processing equipment, even for workpieces with different processing times, which can be charged into the processing equipment from the charging equipment via the conveying equipment at appropriate timing. It is now possible to automatically create a time chart and control so that the heat treatment completion times of the workpieces do not overlap.

In the heat treatment equipment according to the embodiment of the present invention, the material to be treated before heat treatment is charged from the charging device into the standby chamber through the transfer chamber of the transfer device, and the heat-treated object is extracted from the transfer device. The object to be treated, which has been heat-treated in the processing apparatus, is transferred to the heat-retaining chamber through the transfer chamber of the transfer device, and the object to be treated before heat treatment is inserted into the standby chamber of the transfer device. The material is loaded into the processing apparatus through the transportation chamber, the transportation apparatus with the heat-treated material loaded in the heat-retaining chamber is moved to the position of the extraction apparatus, and the heat-treated material is placed in the heat-retaining chamber of the transportation apparatus. FIG. 4 is a schematic explanatory diagram showing a process of moving the conveying device to the position of the charging device after the material to be processed is charged into the extracting device through the conveying chamber. In the heat treatment equipment according to the above-described embodiment, in one processing apparatus in which the heat treatment of the object to be processed is completed, a new object to be processed is charged from the charging device to the processing apparatus via the conveying device and subjected to heat treatment. In (A), the heat treatment completion time of a new object to be heat-treated by loading it into the processing apparatus that has completed the heat treatment of the object is the same as the heat treatment completion time of each object that is being heat-treated in another processing apparatus. FIG. 11 is a transfer time chart showing the timing of heat treatment and transfer of the workpiece in a state where the transfer is not successful due to overlap, and FIG. In order to shift the transfer cycle time, the workpiece that has undergone heat treatment by the transfer device is taken out from the processing device and loaded into the extraction device. 4 is a transfer time chart showing timings of heat treatment and transfer of the object to be treated in the state of the present invention in which the object to be treated is taken out from the charging device and charged into the processing device. In the heat treatment equipment according to the above-described embodiment, in one processing apparatus in which the heat treatment of the object to be processed is completed, a new object to be processed is charged from the charging device to the processing apparatus via the conveying device and subjected to heat treatment. When the heat treatment completion time of an object to be heat-treated after being newly loaded into the processing apparatus coincides with the heat treatment completion time of each object being heat-treated in another processing apparatus, the new object to be treated is The material to be processed that has been heat-treated in the processing apparatus is loaded into the conveying apparatus without being loaded into the processing apparatus, and after the material to be processed that has been heat-treated from the transport apparatus is loaded into the extraction apparatus, the transport apparatus is moved. It is the schematic explanatory drawing which showed the process to move to the position of a charging device. In the heat treatment equipment according to the above-described embodiment, after performing the step shown in FIG. When the heat treatment completion time of the object to be processed does not overlap, a new object to be processed is loaded into the conveying device from the charging device, and the conveying device is moved to the processing device from which the object to be processed has been taken out, A schematic description showing the steps of loading a new workpiece from the transporting device into the processing device, moving the transporting device to the position of the extraction device, and moving the transporting device to the position of the charging device. It is a diagram. Fig. 10 is a transfer time chart showing the timing of heat treatment and transfer of an object to be treated in a state of recovery in the shortest possible time when the object to be treated cannot be prepared in the charging device by the start of the replacement time of the treatment device 20d.

Hereinafter, a heat treatment facility according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. Note that the heat treatment equipment according to the present invention is not limited to those shown in the following embodiments, and can be modified as appropriate without changing the gist of the invention.

In the heat treatment facility according to this embodiment, as shown in FIG. 1, a charging device 10 for charging a workpiece W to be heat-treated, and a plurality (five in the example shown in the figure) for heat-treating the workpiece W , an extraction device 30 for extracting the material heat-treated in the processing device 20, and the charging device 10, the processing device 20, and the extraction device 30. , and a conveying device 40 for loading the workpiece W in the charging device 10 into the processing device 20 and loading the processing device W heat-treated in the processing device 20 into the extracting device 30 .

Further, in the transfer device 40, there is provided a transfer chamber 41, a heat insulation chamber 42 for holding the workpiece W heat-treated in the processing device 20 and loaded into the transfer chamber 41 at a high temperature, and A standby chamber 43 is provided on the opposite side of the chamber 42 with the transfer chamber 41 interposed therebetween, in which the workpiece W charged from the charging device 10 to the transfer chamber 41 is kept waiting before being charged to the next processing device 20. there is In the transfer chamber 41 , the material to be processed W is transferred between the processing device 20 , the charging device 10 , the extracting device 30 , the heat retaining chamber 42 and the standby chamber 43 .

In the heat treatment facility according to this embodiment, first, the material W to be treated before heat treatment is prepared in the charging device 10 . A time Ts1 for charging the workpiece W to be processed thus prepared before heat treatment from the charging device 10 to the standby chamber 43 through the transfer chamber 41 of the transport device 40, and the loading of the workpiece W to the standby chamber 43 are performed. Time Ts2 for moving the conveying device 40 loaded to the processing device 20 from which the heat-treated object W is extracted, and the heat-retaining chamber 42 for the heat-treated object W heat-treated in the processing device 20 through the transfer chamber 41 in the conveying device 40. a time Ts3 for charging into the waiting chamber 43 of the transporting device 40, a time Ts4 for loading the workpiece W before heat treatment, which is loaded into the waiting chamber 43 of the transporting device 40, into the processing device 20 through the transporting chamber 41; Time Ts5 for moving the conveying device 40 with the material to be treated W loaded into the heat retaining chamber 42 to the position of the extraction device 30, and the heat-treated material W loaded into the heat retaining chamber 42 of the conveying device 40, A time Ts6 during which the material to be processed is loaded into the extractor 30 through the transport chamber 41, and a time Ts7 during which the transporter 40, having loaded the heat-treated material W into the extractor 30, is moved to the position of the aforementioned charging apparatus 10. and the total time (Ts1+Ts2+Ts3+Ts4+Ts5+Ts6+Ts7) is defined as a transfer cycle time TS.

In the processing apparatus 20, the heat treatment ends at the same time as the start of Ts3, and the next heat treatment starts at the same time as the end of Ts4. time.

Then, the time (Ta, Tb, Tc, Td, Te) for heat-treating the workpiece W in each processing device 20 (20a to 20e) is set by the control device 50 to a multiple (n times) of the transfer cycle time TS. is adjusted to be the time obtained by subtracting the replacement time from

Therefore, the heat treatment time (T) can be expressed by the formula: (Ts5+Ts6+Ts7+Ts1+Ts2+Ts3+Ts4).times.n-(Ts3+Ts4). (Since the heat treatment starts from Ts5, the order is rearranged with Ts5 at the top for convenience.)

In this way, the heat treatment time, which has conventionally been varied, is given regularity by using the transfer cycle time TS.

In FIG. 2, the state of operation of the transport device 40 and the state of heat treatment in each of the processing devices 20 (20a to 20e) are shown with the horizontal axis (rows) indicating the flow of time. "Conveyance" in the drawing indicates one conveying device 40, and all rows indicate the same one.

Here, in the heat treatment equipment according to this embodiment, when heat-treating the object W to be processed in each processing device 20 (20a to 20e), for example, when the heat treatment of the object W to be processed is completed in one processing device 20c, control By the device 50, the heat treatment completion time (Tc′) of the workpiece W to be newly loaded into the processing device 20c and heat-treated is set to the same value as that of each of the workpieces heat-treated in the other processing devices 20a, 20b, 20d, and 20e. It is determined whether or not it overlaps with the heat treatment completion time (Ta', Tb', Td', Te') of the object W.

Then, the heat treatment completion time (Tc′) of the workpiece W to be newly loaded into the processing apparatus 20c and heat-treated is different from that of each workpiece W heat-treated in the other processing apparatuses 20a, 20b, 20d, and 20e. When it does not overlap with the heat treatment completion time (Ta', Tb', Td', Te'), as shown in FIG. The material W is loaded into the standby chamber 43 (Ts1), the transfer device 40 is moved (Ts2) to the position of the processing device 20c where the heat-treated work W is extracted, and the work W heat-treated in the processing device 20c is moved (Ts2). into the heat retaining chamber 42 through the transfer chamber 41 of the transfer device 40 (Ts3). (Ts4). Next, the conveying device 40 with the heat-treated material W charged in the heat retaining chamber 42 as described above is moved to the position of the extracting device 30 (Ts5), and the heat retaining chamber 42 of the conveying device 40 is charged. After the object W to be processed is charged into the extraction device 30 through the transfer chamber 41 of the transfer device 40 (Ts6), the transfer device 40 is moved to the position of the charging device 10 (Ts7). In FIG. 2, Ts1+Ts2 is shown as transport A, Ts3+Ts4 as transport B (replacement time), and Ts5+Ts6+Ts7 as transport C.

On the other hand, the heat treatment completion time (Tc′) of the workpiece W to be newly loaded into the processing apparatus 20c and heat-treated is different from that of each workpiece W heat-treated in the other processing apparatuses 20a, 20b, 20d, and 20e. When overlapping with the heat treatment completion time (Ta', Tb', Td', Te'), for example, as shown in FIG. 3, the material W to be heat-treated is not loaded into the conveying apparatus 40 from the charging apparatus 10, and the heat-treated material W is transferred to the conveying apparatus 40 as shown in FIG. It is moved (Ts2) to the position of the processing device 20c to be extracted, and after the workpiece W heat-treated in the processing device 20c is charged (Ts3) into the heat retaining chamber 42 through the transfer chamber 41 of the transfer device 40, this transfer device 40 is moved to the position of the extracting device 30 (Ts5), and the workpiece W loaded in the heat retaining chamber 42 of the transporting device 40 is loaded into the extracting device 30 through the transporting chamber 41 of the transporting device 40 (Ts6 ), and then the conveying device 40 is moved to the position of the charging device 10 (Ts7).

That is, the conveying device 40 performs only the operation of extracting the workpiece W heat-treated in the processing device 20c at the beginning of the time indicated by "waiting time" in FIG. Stand by at position 10. Since Ts1 is omitted here, the transfer device 40 is moved so that the start of Ts3 coincides with the end of the heat treatment in the processing device 20c. In FIG. 2B, Ts2 is shown as transport D, and Ts3+Ts5+Ts6+Ts7 as transport E. As shown in FIG.

In addition, the step of loading the workpiece W heat-treated in the processing device 20c into the extracting device 30 via the transporting device 40 and moving the transporting device 40 to the position of the charging device 10 is performed. After that, while waiting for the conveying device, the control device 50 controls the heat treatment completion time (Tc′) of the workpiece W to be newly loaded into the processing device 20c and heat-treated, as described above. It is determined for each transfer cycle time whether or not it overlaps with the heat treatment completion time (Ta', Tb', Td', Te') of each workpiece W heat-treated in 20a, 20b, 20d, and 20e.

Then, as shown in FIG. 2B, the heat treatment completion time (Tc′) of the workpiece W to be newly loaded into the processing apparatus 20c and heat-treated is different from that of the other processing apparatuses 20a, 20b, 20d, and 20e. When the heat treatment completion time (Ta', Tb', Td', Te') of each workpiece W being heat-treated does not overlap, as shown in FIG. The workpiece W is loaded into the standby chamber 43 through the transfer chamber 41 of the transfer device 40 (Ts1), and the transfer device 40 is moved to the position of the processing device 20c from which the heat treated workpiece W was taken out (Ts2). and after the workpieces W loaded in the standby chamber 43 of the transport device 40 are loaded into the processing device 20c through the transport chamber 41 (Ts4), the transport device 40 is placed in an empty state in the extraction device. 30 (Ts5), and further, the conveying device 40 is moved to the position of the charging device 10 (Ts7).

That is, at the end of the time indicated by "waiting time" in FIG. only perform operations that

Since Ts3 is omitted here, the transfer device 40 is moved so that the end of Ts4 coincides with the start of heat treatment in the processing device 20c. In FIG. 2B, Ts1+Ts2+Ts4 is shown as transport F, and Ts5+Ts7 as transport G. As shown in FIG.

In the transport F, the workpiece W is loaded (Ts1) into the standby chamber 43 through the transport chamber 41 of the transport device 40, and the workpiece W loaded in the standby chamber 43 is transported through the transport chamber 41 to the processing device. 20c (Ts4), but the workpiece W may be transferred in the transfer chamber 41 instead of being transferred to the waiting chamber 43. FIG. (This is shown in Figure 4.)

In the transport G, the transport device 40 is moved in an empty state to the position of the extraction device 30 (Ts5), and further, this transport device 40 is moved to the position of the charging device 10 (Ts7) (Fig. 4.) However, when the loading of the workpiece W into the processing device 20c (Ts4) is completed, the conveying device 40 is moved to the position of the loading device 10 in an empty state. good too.

Also, although not shown, in the processing apparatuses 20a, 20b, 20d, and 20e other than the processing apparatus 20c, when the heat treatment of the object to be processed W is completed, the processing apparatus 20c and the processing apparatus 20c perform the same operation. Similarly, by the control device 50, the heat treatment completion time of the workpieces W to be newly loaded into the processing apparatuses 20a, 20b, 20d, and 20e that have completed the heat treatment of the workpieces W to be subjected to heat treatment is changed to that of another treatment. It is determined whether or not the time overlaps with the heat treatment completion time of each workpiece W being heat-treated in the apparatuses 20a, 20b, 20c, 20d, and 20e. The workpiece W is heat-treated at 20b, 20d and 20e.

Then, as shown in this embodiment, the time (Ta, Tb, Tc, Td, Te) for heat-treating the workpiece W in each of the processing apparatuses 20 (20a to 20e) is controlled by the control unit 50 in the above-described transport cycle. The time is adjusted to be the time obtained by subtracting the replacement time from the multiple of the time TS. When the heat treatment is performed, the control device 50 controls the amount of the workpiece W in each processing device 20 (20a to 20e) based on the heat treatment time of the workpiece W in each processing device 20 (20a to 20e). By controlling each transfer cycle time TS so that the heat treatment completion times do not overlap, even when heat-treating objects W having different processing times in the respective processing apparatuses 20 (20a to 20e), the heat treatment can be performed. The heat-treated object W can be appropriately taken out at a timing corresponding to the transfer cycle time TS from the processing apparatus 20 (20a to 20e) in which the heat treatment of the object W has been completed, and the object W before the heat treatment can be taken out. can be loaded from the charging device 10 into the processing device 20 (20a to 20e) via the transport device 40 at an appropriate timing corresponding to the transport cycle time TS and heat treated, and the workpieces with different processing times As for W, it becomes possible to create a transport time chart for efficient heat treatment equipment in each processing equipment 20 (20a to 20e), and the heat treatment equipment control device 50 of the present invention enables such efficient heat treatment equipment to be transferred. A transfer time chart can be automatically created, and control can be performed so that the times at which the heat treatment of the workpiece W is completed do not overlap.

Depending on the time and timing of the heat treatment of the workpiece W, the transport device 40 may stop at the position of the charging device 10 for the entire transport cycle time TS.

Further, even if the timing of preparing the material W to be processed in the charging device 10 is suddenly delayed, recovery can be easily considered by adopting the transport cycle time TS.

For example, in the processing device 20d of FIG. 2(B), if the material to be processed W cannot be prepared in the charging device 10 at the time indicated by a triangle (▴), then the processing device 20d Only the material W to be processed that has been heat-treated is extracted, and the material W to be processed that has been prepared in the charging device 10 is replaced with Te at the time indicated by Te' and is heat-treated in the processing device 20e. Then, in the processing apparatus 20d, by using the first transfer cycle time TS in which the other processing apparatuses 20a, 20b, 20c, and 20e do not replace the workpieces W, the workpieces W are marked with an asterisk (*). Only charging is performed at the time indicated by .

In other words, even if the preparation of the workpiece W is delayed, the waiting time 2 (see FIG. 5) is intentionally set for the processing apparatus 20 that was scheduled to be loaded, and the processing apparatus 20 to which the workpiece W is loaded is not placed. By shifting to the second processing unit 20, it is possible to recover the operation while minimizing the idle time of all the processing units 20 (20a to 20e).

Further, in the above-described embodiment, after the object W heat-treated in the treatment device 20 (20a to 20e) as described above is loaded into the extraction device 30, the object W heat-treated in the extraction device 30 When the object W is cooled like a quenching treatment, the time from the cooling of the object W heat-treated in the extraction device 30 to the end of carrying out from the extraction device 30 is the transfer cycle time TS. , so that the workpieces W heat-treated in each processing device 20 (20a to 20e) can be sequentially loaded into the extraction device 30 from the conveying device 40 without clogging.

In order to perform the above control, equipment and heat treatment conditions such as transfer cycle time (TS), replacement time (Ts3+Ts4), heat treatment time (T) of each workpiece W, etc. are input to the control device 50. By doing so, an appropriate transportation time chart can be automatically created, and if it is possible to control so that the times when the heat treatment of the workpiece W is completed do not overlap, the processing in the processing apparatus 20 (20a to 20e) can be easily performed. It becomes possible to efficiently heat-treat workpieces W with different times.

10: Charging device 20 (20a to 20e): Processing device 30: Extraction device 40: Transfer device 41: Transfer chamber 42: Thermal insulation chamber 43: Waiting chamber 50: Controller TS: Transfer cycle time Ta: Inside of processing device 20a Heat treatment time Tb of the object to be processed: Heat treatment time Tc of the object to be processed in the processing device 20b: Heat treatment time Td of the object to be processed in the processing device 20c: Heat treatment time Te of the object to be processed in the processing device 20d: Processing device 20e Heat treatment time Ta' of the object to be processed in: Heat treatment completion time Tb' of the object to be processed in the processing device 20a: Heat treatment completion time Tc' of the object to be processed in the processing device 20b: Object to be processed in the processing device 20c Heat treatment completion time Td': Heat treatment completion time Te' of the object to be processed in the processing device 20d: Heat treatment completion time W of the object to be processed in the processing device 20e: Object to be processed

Claims (3)

A charging device for charging an object to be heat-treated, a plurality of processing devices for heat-treating the object, an extraction device for extracting the heat-treated object in the processing device, and the charging device and the processing device. and an extractor to charge the material to be treated in the charging apparatus into the treatment apparatus and to charge the material heat-treated in the treatment apparatus to the extraction apparatus. wherein the conveying device comprises a conveying chamber for transferring the object to be processed between the processing device, the charging device and the extracting device, and the object being heat-treated in the processing device and charged into the conveying chamber. a heat insulating chamber for keeping the object to be processed at a high temperature; The time for charging the object to be processed from the charging device to the standby chamber through the transfer chamber in the transfer device, and the time for moving the transfer device to the processing device for extracting the heat-treated object. The object to be treated that has been heat-treated in the processing apparatus is loaded into a heat retaining chamber through the transfer chamber of the transfer device, and the object to be processed that has been charged into the standby chamber of the transfer device before heat treatment is: A replacement time during which the material is loaded into the processing apparatus through the transportation chamber, a time during which the transportation apparatus charged with the heat-treated material is moved to the position of the extraction apparatus, and the transportation apparatus. The time for charging the heat-treated material charged in the heat retaining chamber to the extraction device through the transfer chamber, and the time for charging the heat-treated target material to the extraction device. The transfer cycle time is defined as the total time of moving the workpiece to the position of the input device, and the time for heat-treating the workpiece in each of the processing devices is changed from a multiple of the transfer cycle time to the exchange time by the control device. While adjusting to the subtracted time, when the workpiece before heat treatment is charged from the charging device to the processing device via the conveying device and heat treated, the control device controls the processing target in each processing device. A transfer time chart for the heat treatment equipment is automatically created based on the heat treatment time of the object, and control is performed for each transfer cycle time so that the time at which the heat treatment of the object to be processed in each of the above processing equipment is completed does not overlap. A heat treatment facility characterized by: 2. In the heat treatment equipment according to claim 1, when the workpiece before heat treatment is charged from the charging device to the processing device via the conveying device and heat treated, the control device controls the When the heat treatment completion time of an object to be heat-treated after being loaded into a processing apparatus via a conveying device overlaps with the heat treatment completion time of each object being heat-treated in another processing apparatus, The operation of loading the workpiece into the processing equipment via the transport device is not performed, and the judgment is made again after one transport cycle time. A heat treatment facility characterized by performing an operation of loading a treated material into the above-described treatment apparatus. 3. The heat treatment equipment according to claim 1 or claim 2, wherein the object heat-treated by the extraction device is cooled, and the object heat-treated in the extraction device is cooled and removed from the extraction device. A heat treatment facility characterized in that the time until completion of unloading is shorter than the transport cycle time.

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