JP2531603B2 - Method for combining die and bolster in heating aluminum die extrusion die and aluminum die extrusion apparatus - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technique for extruding an aluminum mold, and more specifically, prior to extruding the aluminum mold, a die is heated and the heated die is bolstered. In a method of incorporating a die and a bolster combined with each other into an extruder and then extruding an ordinary aluminum profile, when the die is heated by low-frequency heating and soaking, the die and It relates to a method of combining bolsters and a device for implementing this method.

Prior art In order to make the temperature distribution of an aluminum die (hereinafter referred to as die material) extrusion die uniform and to suppress the temperature drop during extrusion, the die should be extruded before extrusion, for example 400-50
Heating to 0 ° C. and incorporating the heated die into the extruder is common practice in the art. As a method of heating the die, one-step heating by electric resistance heating, combustion heating or low frequency induction heating was generally performed, but in JP-A-55-11417, the die is heated by a low frequency current. Two-stage heating, in which heating is followed by contact with a heat medium (for example, combustion gas or air that has been electrically resistance-heated) to soak
It has been proposed that this is a preferable method from the viewpoint of shortening the heating time and making the temperature distribution uniform. In addition, the above
55-11417 discloses a two-stage heating device, one at a time.
There has been proposed a device including a low-frequency heating means such as a low-frequency induction coil that heats one die, and a heat medium generation means such as a gas combustion furnace that uniformly heats two or more dies at a time. Furthermore, regarding the specific configuration for conveying the dies in the desired order and heating them in two steps, dies in a broad sense in which the die body, the die ring, and the backer are integrally combined are arranged on the organizing table in the order in which they are subjected to extrusion molding. Then, the auto hand automatically and selectively takes out a die (hereinafter, the die is a broad sense) from the die arrangement table, puts it on the slider, and slides the die on the low frequency heating coil area. After heating at a low frequency, the die is returned to the original position by the slider again, and subsequently, loading and unloading into and from the soaking furnace are performed by an auto hand. Note that it is also possible to adopt a configuration in which conveyance is performed by an automatic hand or a hoist without using a slider.

The present inventor has found the following problems as a result of analyzing various works involved in the above-described known two-step heating.

(1) Generally, the die is frequently changed depending on the type and size of the mold material, but the bolster is commonly used by several dies or more. In the known two-stage heating method, the dies are automatically selected because they are arranged on the table in a predetermined order according to the extrusion schedule, but the bolster is installed in the die before the die is assembled into the extruder. Must be selected accordingly. The work for this purpose reduces the extrusion efficiency of the mold material.

(2) Since the operator for operating the auto hand or the hoist must be assigned to the extruder and the heating device, the labor cost causes the cost increase of the die material, and the die heating time, the extrusion schedule, the low frequency heating furnace.・ It was difficult for the operator to operate the auto hand etc. with high efficiency, considering comprehensively whether there is an empty space in the soaking pit. In particular, there is a problem that it is difficult to cope with small-lot production of a wide variety of products and changes in extrusion schedule.

OBJECT OF THE INVENTION The first object of the present invention is to provide a method for heating a die prior to subjecting it to extrusion of a mold material in two steps, that is, low-frequency heating and soaking with a heating medium. The purpose is to provide a method of doing so.

A second object of the present invention is to provide a device that can effectively use means such as heating and carrying by automating the above-mentioned two-step heating and operation of carrying means such as an auto hand and a hoist. It is in.

Composition of the Invention The method according to the present invention comprises uniformly heating an aluminum die extruding die (hereinafter referred to as “die”) composed of a die body, a backer and a die ring with a low frequency current and then contacting it with a heating medium. In the method of combining heated and soaked dies with a bolster, a plurality of dies are arranged in a predetermined arrangement order on a die arrangement table having an arrangement address, and a plurality of bolsters is arranged on the bolster arrangement table. And storing in the storage device the die number of the plurality of dies and the die number of the bolster used for extrusion together with the die selected for extrusion,
Insert one die into the low-frequency heating furnace from the die arrangement table to perform low-frequency heating, and then insert the low-frequency heated die into the non-arranged position of the soaking furnace of the soaking furnace where the die arrangement address is determined. And, the die number of the loaded die is stored in a storage device together with the array address of the soaking pit, and any one of the dies placed in the soaking pit is extracted to extract the stockyard or die slide. The bolster corresponding to the die extracted from the soaking furnace is conveyed from the bolster rearrangement table to the stock yard or die slide, and these are combined and incorporated into an aluminum profile extrusion machine, to the bolster rearrangement table. When there is no corresponding bolster, it is characterized in that only the die is conveyed to the aluminum profile extrusion machine, and the used bolster is returned to the bolster sorting table at the original array address. Upon heating of the extrusion die of an aluminum type material to a method of combining a die and bolster.

The device according to the present invention is a device for combining a die heated by a low-frequency heating furnace that heats one die and then soaked by a soaking furnace that heats by a heat medium with a bolster. A die arranging table with an arrayed address for arranging and arranging multiple dies in the order set by the extrusion schedule, (b) a stockyard or die slide that combines dies and bolsters, (c) an array address Specified bolster control table, (d) Die / bolster-compatible model number storage means for storing the bolster model number corresponding to the model number of the die, (e) The model number of the die heated in the low-frequency heating furnace. First storage means for storing, (f) Second storage means for storing the die number of the die soaked in the soaking furnace together with die array addresses, (g) the die arrangement Third storage means for storing the die number of the die arranged in (a) together with the arrangement address, and (h) a fourth memory for storing the die number of the bolster arranged in the bolster sorting table (c) together with the arrangement address. Means, (i) fifth storage means for storing the die number of the die used for extrusion, (u) the low-frequency heating furnace, soaking furnace, die sorting table (a), stockyard or die slide (b) ),
Dies and / or between the bolster arranging table (c) and the extruder
Or, one transfer means for transferring and arranging the bolster, (l) Extrusion schedule setting and changing means, (e) Comparison of the standard heating time or temperature of the die in the low frequency heating furnace with the actual heating time or temperature. 1 control means, (w) second control means for comparing the standard heating time or temperature of the dies in the soaking furnace with the actual heating time or temperature, (f) arranged from the third storage means (g) to the die sorting table Is a conveyance command means for receiving a signal of a model number, a conveyance and arrangement signal from the extrusion schedule setting and changing means (l), and transmitting this signal to the conveyance means (d), and the conveyance operation state is One of the following (i) to (Viii) is identified, a signal is received from the first control means (e) and the second control means (wa), and further, the first storage means (e) to the fourth storage means (e) Storage means ( ), The extrusion schedule setting and changing means (l) receives an extrusion continuation signal in the extruder and a die number signal for the next extrusion, and the fifth storage means ( Re)
By receiving the die number of the die currently being used for extrusion, (i) the dies are arranged in the die arrangement table (a) in the order of the extrusion schedule, and (ii) the die in the earliest order of the extrusion schedule is Call from the die sorting table (a), and transfer the dies called in (iii) and (ii) from the die sorting table (a) to the low-frequency heating furnace, (iv)
After a signal that the low frequency heating at a predetermined temperature and time is completed is generated from the first control means (e), the die is conveyed from the low frequency heating furnace to the soaking furnace, and (v) at the end of the extrusion, When a signal is generated from the second control means (wa) that the next extrusion die among the dies of the model number stored in the second storage means (f) has been soaked for a predetermined temperature and time, The next extrusion die is conveyed from the soaking furnace to the extruder through the stockyard or the die slide (b) or not, and (vi) the bolster corresponding to the die conveyed by (V) is the bolster. If the bolster is on the rearranging table (C), it is transported from the bolster rearranging table (C) to the stock yard or die slide (B), and (vi)
i) From the extruder according to the profile extrusion schedule,
A signal is generated to return the die to the die sorting table (a) or to carry it out of the moving route of the discharging means, and to return the bolster to the original position of the bolster sorting table (c).
(Viii) When any of the transportations or arrangements of (i)-(vii) is performed, the other transportations or arrangements are made to wait, and (ix) When there is no vacant address in the destination destination, the transportation is made to wait. The present invention relates to a device for combining a die and a bolster at the time of heating an aluminum die extrusion die, which is characterized by including a conveyance instruction means for generating a signal.

Example (A) Method of combining die and bolster FIG. 1, FIG. 2 and FIG. 3 show an example of a die extrusion factory configured to carry out the method of combining a die and a bolster according to the present invention. FIG. 4 is a drawing showing a front view, a plan view, and a side view, respectively. In these figures, 1
Is a die arranging table, 2 is a low-frequency heating furnace, 3 is a soaking furnace, 4 is a stockyard, and 5 is a bolster arranging table.

The low-frequency heating furnace 2 is equipped with a lid 13 that is opened and closed via a piston rod 12 that is biased by a hydraulic cylinder 11, and has a die 10 (however, the die is not yet inserted in the furnace) 1 inside. This is a furnace in which one furnace is put at a time and heating is performed, and the heating conditions may be the same as those described in the above-mentioned JP-A-55-11417.

The soaking furnace 3 is a furnace capable of simultaneously heating four dies 10 in this embodiment, and four lids 16 are respectively provided with piston rods 15 so that the dies 10 can be individually charged or extracted. Connected to the hydraulic cylinder 14 and opened and closed. A burner 18 is attached to one end of the soaking furnace 3. Instead of the burner 18, it is possible to use an electric resistor or the like soaking means for generating heat medium described in JP-A-55-11417. The soaking conditions may be the same as those described in this publication.

The die sorting table 1 has a die array address 1 (1) to 1
(6) defined, any shape that can hold the die,
For example, a box-shaped member. These array addresses 1
(1) to 1 (6) can be set by any means such as providing a partition on the die sorting table 1. The dies 10a to 10f are arranged by the auto hand 20 according to the order of the extrusion schedule. When the extrusion schedule is changed, the dies 10 are rearranged on the die arrangement table 1.

In this embodiment, the bolster sorting table 5 is a bolster 30 holding member having an arbitrary shape in which eight array addresses 5 (1) to 5 (8) are defined, and four bolsters 30a to 30d are arrayed. keeping. These bolsters 30a to 30d are arranged by the auto hand 20 regardless of the order of the extrusion schedule.
Selected to correspond to 10. An example of this correspondence is as follows.

Die Bolster Remarks (Die state) 10a 30a (Low frequency heating standby) 10b 30a (Same as above) 10c 30b (Same as above) 10d 30c (Same as above) 10e 30a (Same as above) 10f 30d (Same as above) 10g 30b (2) 10h 30b (during soaking) 10i 30c (same as above) The above correspondence is stored in the microcomputer, barcode, and other storage devices. Further, the die numbers of the dies 10 arranged on the die arranging table 1, that is, the above-mentioned a to f are also stored together with the arrangement addresses 1 (1) to 1 (6) and updated as necessary.

The soaking furnace 3 has array addresses 3 (1) to 3 (4), of which the die 10 is used in 3 (3) and 3 (4).
h and 10i are soaked respectively, and die 3g in 3 (2)
Is scheduled to be charged, and 3 (1) is an empty address in which no die is charged, or the die (not shown) is in uniform heat. The correspondence between the array addresses 3 (1) to 3 (4) of the soaking furnace 3 and the die model numbers g, h, i is also stored in the storage device.

Reference numeral 20 denotes an auto hand, which is a wheel 32 rolling along a longitudinal guide girder 31 attached to a steel frame 30 of a building of an extrusion plant.
Causes the auto hand 20 to move to the left and right in FIG.
In addition, the wheels 35 rolling along the sub beam 34 fixed to the main beam 33 allow the automatic hand 20 to move in the left-right direction in FIG.
Is configured to move. The auto hand 20 includes a pair of openable and closable arm members 20a and 20b. These arm members 20a and 20b are held and released by a driving device (not shown) and moved up and down. In the illustrated embodiment, 10 g of low frequency heated die is used for auto hand 20.
Thus, the die 10g is loaded in the left-right direction in FIG. 1, and is loaded into the empty address (3 (2)) of the soaking furnace. This auto hand 20 is a die 10h or 1
Any one of 0i is selected according to the extrusion schedule and is conveyed, and any one of the operation of conveying the die 10a having the next extrusion schedule from the die arrangement table 1 to the low-frequency heating furnace 2 is performed subsequently. If the former operation is performed, die 10
h or 10i is conveyed to the stock yard 4, then the corresponding bolster 30b or 30c is conveyed from the bolster arrangement table 5 to the stock yard 4, and a die and a bolster are combined and the extruder (not shown) is conveyed from the stock yard 4. ) To.
An example of detailed shapes of the die and the bolster is shown in FIG. In FIG. 4, 10 'is a die body, 10 "is a die ring, 10 is a backer, 30' is a bolster body, and 30" is a sub-bolster. The sub bolster is a member of the bolster, but it may be omitted. 39 is each member 30 ', 10
Pins for fixing the rotation of 10 '. The die and the bolster are combined by aligning and pressing the illustrated members.

In the above description, if the die 10h and the bolster 30b are incorporated in the extruder, and the die used for the next extrusion is the die 10g, the bolster corresponding to the die 10g is not on the bolster control table 5. . In this case the dice
The auto hand 20 that extracted 10 g from the soaking furnace 3 moves to an extruder (not shown) without passing through the stockyard 4. On the other hand, if the used die 10h is returned to the die sorting table 1 by the auto hand 20 that has conveyed the die 10g,
Alternatively, when there is no plan to use it due to the extrusion schedule, it is carried out of the transportation means moving path 20.

On the other hand, in the above description, the die 10i and the bolster 30c
Is incorporated into the extruder, and the die used for the next extrusion is the die 10g, the bolster 30b is called from the bolster sorting table 5, combined with the die 10g, and these are conveyed to the extruder for use. The completed die 10i and the bolster 30c are separated in the stockyard 4, the bolster 30c is returned to the original position of the bolster arranging table 5, and the dies 10i are arranged on the die arranging table 1 in the order of the extrusion schedule.

Reference numeral 40 is a hoist for facility maintenance or for carrying which is not suitable for being shared by the automatic hand 20. If an appropriate jig is used, the hoist 40 can replace the die 10 and / or bolster instead of the auto hand 20.
30 transfers can be performed. In any case,
It is desirable to clearly divide the functional divisions of the hoist 40 and the auto hand 20 so that they do not interfere with each other during conveyance.

In another embodiment of the present invention, the die rearrangement table 1 is a trolley type, the dies are pre-arranged in a die storage factory, and then transferred to the die material extrusion factory, and if necessary, the die is extruded in the die material extrusion factory. It is also possible to rearrange.

Further, in another embodiment of the present invention, the stock slide 4 may be replaced by the die slide shown in FIG. In FIG. 5, 50 is the entire die slide, 51a and b are movable bases, 52 is a platen that constitutes one member of the extruder main body, 53 is a die slide cylinder fixed to the platen 52, and 54 is the platen 52. A bracket that is welded and supports the movable base, 55 is a container that can move in the direction of the arrow, and 56a and 56a are a combination of a die and a bolster that are fixed in place on the base. The piston rod 53a of the die slide cylinder 53 retracts,
When the container 55 presses the die / bolster combination 56a against the platen 52, the extruder is ready for extrusion. After the completion of extrusion, in order to replace 56a with 56b, the state as shown in FIG. 5 is set again, the piston rod 53a is further advanced, and the piston rod 53a is retracted with 56a and 56b substantially engaged, Subsequently, the replacement cylinder 58 operatively connected to the movable base 57 via the piston rod 59 is operated to advance 56b on the extension line of the movement of the movable base 51a,
Then, the die slide cylinder 53 moves 56 to the extrusion position. In the embodiment shown in FIG. 5, the movable base 51b of the die slide 50 replaces the stockyard 4, and the function of conveying the die and / or the bolster by the automatic hand or hoist from the stockyard 4 to the extruder is provided. Die slide cylinder 53 and replacement cylinder 58
It is realized by.

(B) Combination Device In the embodiment of the die and bolster combination device of the present invention, the low frequency heating furnace 2 and the die arrangement addresses 3 (1) to 3 (4) shown in FIGS. 1 to 3 are shown. ) Is set in the soaking furnace 3, die array addresses 1 (1) to 1 (6) are set in the die sorting table 1, the stockyard 4 (or the die slide 50 in FIG. 5), and the array address 5 (1). ) To 5 (8), a bolster sorting table 5 and an automatic hand 20 (or a hoist 40 provided with a jig) as one conveying means are included, and further, the elements shown in FIG. Or means are included. The configuration of the present invention will be described in more detail with reference to FIG.

The dies are arranged on the die arranging table 1 by the conveying means 20 according to the order of, for example, the extrusion schedule of one day determined by the extrusion schedule setting and changing means 60 (hereinafter, abbreviated as the schedule setting means 60), and the die molds. Numbers 10a to 10d (Fig. 2) are array addresses 1 (1) to 1
Corresponding to (6), the die type number array third storage means 61
(Hereinafter, abbreviated as third storage means 61). Since the die arrangement described above is performed, for example, only once a day, the efficiency of the entire extrusion operation does not decrease even if it is not electrically performed by the transfer instruction means 80 described later.

In addition, before or after the above-mentioned die arrangement, bolsters are arranged on the bolster arranging table 5 regardless of the extrusion schedule, and the bolsters 30a to 30d (Fig. 2) have their model numbers and arrangement addresses 5 (1) to 5 (5). The correspondence of (4) (FIG. 2) is stored in the bolster type number / array fourth storage means 62 (hereinafter abbreviated as the fourth storage means 62).

Dice 10a arranged in the first position on the die sorting table 1
Is usually the earliest extrusion schedule, the extrusion schedule setting means 60 sends the extrusion hand to the auto hand 20 via the transfer instruction means 80, ie, the die with the earliest extrusion schedule, that is, the die 10a of the array address 1 (1). Is given (first state).

The low-frequency heating furnace 2 is provided with a die die number first storage means 63 (hereinafter abbreviated as first storage means 63), and the die die number carried by the auto hand 20 and the die not loaded or extracted. In case of empty space, the vacant address is low frequency heating furnace 2
Is stored in the first storage means 63. In the above-mentioned first state, an empty address signal is sent from the first storage means 63 to the conveyance instruction means 80, and the conveyance instruction means 80 conveys the die 10a to the auto hand 20 from the die arrangement table 1 to the low frequency heating furnace 2. Signal to be applied (second state). When the second state is realized, the signal indicating that the automatic hand 20 is operating and the vacant address 1 (1) of the die sorting table 1 are stored in the transfer command means 80.

The low-frequency heating furnace 2 has a thermometer or a lid 16 (first
(Fig. 2, Fig. 2), the temperature control means connected to the comparison circuit, that is, the first control means 70, is connected to the timer excited by the moving limit switch, and the die reaches the standard heating temperature or time. At this time, a die extraction signal is given to the transfer instruction means 80 (3A state).

The soaking furnace 3 is connected with a die type number array second storage means 64 (hereinafter abbreviated as second storage means 64), and this storage is stored in the first, second and third A states as described above. The contents are that there is an empty space at array addresses 3 (1) to 3 (4). When the 3A state is realized, the conveyance command means 80 changes the 3A state.
The state and the vacant addresses of 3 (1) to 3 (4) are detected, and a signal for conveying the die 10a (Figs. 1 and 2) from the low frequency heating furnace 2 to any vacant address of the soaking furnace 3 is given. (Fourth state). This fourth state is also stored in the conveyance command means 80 like the second state. A second control means 71 similar to the first control means 70 is attached to the soaking pit 3, and the achievement of the standard heating time or temperature is given to the transfer command means 80 as a die extraction signal (3B).
Status).

During the 4th state to the 3B state, the die of the next extrusion schedule is loaded into the low-frequency heating furnace 2 from the die arrangement table 1 (the 5th state). This is basically the first state and the second
The same is done as in the case of state.

The extruder 82 corresponds to a die die number fifth storage means 65 (hereinafter abbreviated as fifth storage means 65) for storing die die numbers used for extrusion. This memory is
In each of the above-mentioned states, the die number is stored when the die is assembled by the auto hand 20, and becomes zero again when the die is removed.

When the first control means 70 generates the die extraction signal after the fifth state is realized, the same transfer operation as in the third state is performed.

After realizing the fifth state, the second control unit 71 detects which die has reached the standard soaking time or temperature (sixth state). In the sixth state, when the memory of the fifth storage means 65 is zero, the die at the earliest extrusion schedule is extracted from the soaking furnace 3, and when the memory of the fifth storage means 65 is not zero, the extrusion is continued. When the disappearance of the signal is detected, the transfer instruction means 80 generates a signal for extracting the dice (seventh state).

In the seventh state, the model number of the bolster corresponding to the die for which extraction is instructed is called from the fourth storage means 62, and whether the bolster is on the bolster control table 5 and which array address 5 (1) -5. Whether there is (4) is given to the conveyance instruction means 80 as a signal. The signal may be used as reference information at any time (state). After transferring a predetermined bolster from the bolster arranging table 5 to the stock yard 4 by the auto hand 20, or before this, the die is transferred from the soaking furnace 3 to the stock yard 4 by the auto hand 20 (eighth state). Next, combine the die and bolster, and attach these to the extruder 82 using the automatic hand 20
It is conveyed by (9th state). The fact that the automatic hand 20 is moving in the eighth state and the ninth state is stored in the conveyance command means 80. This memory is released by detecting the state where the automatic hand 20 has returned to a predetermined standby position, or by the arm members 20a, 20
This is performed by detecting the release of b (Fig. 3). When a call from another part is given to the transfer command means 80 before this memory is released, the call is held in the transfer command means 80,
Then, after waiting for the release of the above-mentioned storage, the transport instruction means 80 generates a predetermined transport signal.

When the extrusion schedule is changed in any of the states described above or later, the arrangement instruction signal for changing the die arrangement on the die arrangement table 1 is given from the transfer instruction means 80 to the auto hand 20. For dies that are low-frequency heated and soaked, there is no schedule change, or even if there is a change, ignore this,
There is almost no problem even if soaking is continued.

In addition to the above-mentioned transfer or arrangement change signal, the transfer instruction means 80 transfers the die from the soaking furnace 3 to the extruder 82 (when the corresponding bolster is used-the ninth state), from the extruder 82 to the die and / or. Bolsters in stockyard 4 and bolsters 5
Alternatively, a signal to be conveyed to the die sorting table 1 is generated.

Next, an example of the electronic control circuit of the apparatus shown in FIG. 6 will be described with reference to FIG.

Information of the first to fifth storage means (63, 64, 61, 62, 65) is written, changed, and erased in the RAM 101 of the transfer instruction means 80, and a schedule input from the extrusion schedule input board 100 is stored. Written. Also RAM101
In addition, the correspondence relation of the number of bolsters corresponding to the number of dies usually used is also stored. An external storage device (not shown) may be used to store this correspondence. First and second control means (70 and 7 respectively)
The die extraction signal from 1) is transferred by the transfer command means 80.
It is given to the auto hand 20 as a movement command by a program process described later in detail.

Since the extrusion work of the mold material is expected to be considerably delayed due to a trouble of the extruder or the stagnation of the work after the extrusion, the extrusion continuation signal 105 is always given to the conveyance instruction means 80, and the manual operation is performed immediately before the extrusion of the mold material is completed. By continuing the extrusion continuation signal 105 by, to notify the conveyance instruction means 80 that the time to replace the die is approaching, and perform a predetermined work, the regeneration of the extrusion continuation signal 105 is manually Or by auto hand 20
If this is automatically performed by a movement signal to the extruder 82, the electronic control circuit is prevented from malfunctioning due to a trouble of the extruder or the like.

In the ROM 104 of the transfer instruction means 80, the program described below and
The travel route inside the extrusion factory building (the route indicated by the arrow in the frame of 20) is written. Further, although not shown, this moving route also includes the moving height and the ascending / descending distance in the extrusion factory building. CPU106 is 70, 71, 100, 1
The signal from 05 and the information on the movement of the auto hand 20 are processed, the auto hand 20 is moved to standby, and the work such as moving along a predetermined route (route within the frame of 20) is performed, and CRT etc. are displayed. Signal device 110.

In the frame of the display device 110, () is a desired display content, but it is not necessarily displayed.

About the program contents written in ROM104 No. 8
This will be described with reference to FIGS.

When the program starts, first, the extrusion schedule (A) is input by the extrusion schedule input boat 100 (FIG. 7) (step 1). next,
The bolster type number and the die type number input command are displayed on the display device 110 (FIG. 7), and the die type number 10a is input from the keyboard 109 (FIG. 7) according to the arrangement performed in advance.
~ 10f (Fig. 1) and array addresses 1 (1) to 1 (6), and
Bolster type numbers 30a to 30d and sequence addresses 5 (1) to 5 (4)
Is input (steps 2 and 3). The order of steps 1, 2 and 3 is arbitrary.

Then, the die number of the die having the smallest array address is called (step 4). Next, step 1 and step 4
A comparison is made as to whether the extrusion schedule is the same as (step 5). In order to perform this comparison, when the extrusion schedule is changed between step 1 and step 4, the old schedule is copied to a predetermined definition area of RAM, and a process for confirming the presence or absence of information in this definition area is performed. Is practical. In step 5, very little change in extrusion schedule is actually confirmed. Because, in response to the change of extrusion schedule,
This is because the dies on the die arrangement table are rearranged during the heating of the dies. However, if the schedule was changed between steps 1 and 4 and the dies have not been rearranged, then the die of the earliest extrusion schedule is selected by step 6 and the die number of step 4 is cancelled.

Then, the empty of the automatic hand and the low-frequency furnace is confirmed, and a signal for calling the transportation means or waiting for transportation is generated (steps 8 and 9). The die called by the extrusion schedule is conveyed from the die arrangement table 1 to the low-frequency heating furnace 2 by the auto hand 20 (Figs. 1 to 3) (step 10). When step 10 is being executed, the low frequency furnace is being charged with dies.
A program can automatically write that there is no vacant address in the low-frequency furnace at a predetermined address in RAM 101 (Fig. 7).

Then, the reference heating time or temperature (T ₁ ) is set according to the die number called up (step 11), and the actual heating time or temperature (T ₂ ) is measured (step 1).
2) Then, a comparison operation of T ₂ ≧ T ₁ is performed at a predetermined time interval (step 13).

When T ₂ ≧ T ₁ , a dice extraction signal is generated.

If T ₁ and T ₂ may be constant for all dice, step 11 may be performed before or immediately after the step.

After the dice extraction signal is generated, it is judged whether there is an empty address in the soaking pit (step 14), and if it is (YES), there is a vacancy in the auto hand 20 (Figs. 1 to 3) (during transportation or transportation). Standby) is determined (step 15), and if there is space (YES), a signal for carrying out from the low-frequency furnace to the soaking furnace is generated (step 16). The order of steps 14 and 15 is arbitrary. If the determination in step 14 or step 15 is NO, the die is placed in the low-frequency furnace for standby. Steps 14 and 15
If the result of the determination is YES, it can be written in the RAM 101 (FIG. 7) that the low-frequency reactor has an empty address by a program. Further, after step 16, the charging array address in the soaking furnace is written in the RAM 101 by a program together with the die type number.

Steps 17, 18, and 19 for soaking are steps 11,1
Same as 2 and 13. If T ₄ ≧ T ₃ , the interruption of the extrusion continuation signal 105 (FIG. 7) (step 20-NO) is detected and the process proceeds to the next step. If extrusion is not continued (step 20-NO), only the die and bolster or die are removed from the extruder. There is no plan to reuse the removed die due to the extrusion plan (step 20a-NO)
In this case, the die is carried out of the transportation means moving route (step 20d). If you plan to reuse (step 20a
-YES) is transferred to the die sorting table (step 20b).
Also, the used bolster is returned to the bolster organizer (step 20c). As described above, normally, the die of the next extrusion schedule is heated in the soaking furnace, so step 21 is YES and the step NO (described later) is not performed. However, there may be two or more dies satisfying the condition of T ₄ ≧ T ₃ depending on the change of the extrusion schedule or the temperature distribution in the furnace. Therefore, after step 21, the array address 3 (1) of the dies of the next extrusion schedule is set. ) To 3 (4), the die number of the extrusion front schedule at the present time after step 21 is set to the array addresses 3 (1) to 3 (4) corresponding to the die type numbers of T ₄ ≧ T ₃ Need to correspond. Then, in order to carry the called die, the judgment in step 22 is made, and if YES, it is judged whether or not the called bolster is on the bolster control table (step
23) If YES, first transfer the bolster 30 from the bolster rearrangement table 5 to the stockyard 4 (step 24), then transfer the die 10 from the soaking furnace 3 to the stockyard 4 (step 25), and , Combined dice 10 and bolster
Transport 30 from stockyard 4 to extruder (step
26). If the determination result in step 23 is NO, only the die is conveyed from the soaking furnace to the extruder without going through the stockyard (step 26). At any stage between steps 22 and 26 described above, the vacant address generated in the soaking pit can be programmed into the RAM 101 (FIG. 7). Step
At 26, the extrusion continuation signal is restored, and the contents of the RAM 101 are updated so that the die of the next extrusion schedule advances to the earliest schedule.

In step 27, the auto hand 20 is returned from the extruder to a predetermined waiting place, usually above the die sorting table 1.

When the extrusion schedule is changed, the new schedule and the old schedule are temporarily stored in a predetermined area of RAM, and a rearrangement command is given to the auto hand in step 28. That is, after step 27, the necessity of rearrangement of dice is always determined, and step 28 is performed if necessary.

After the second extrusion schedule, the above-mentioned program may be executed in the order of steps, but the above-mentioned steps may be divided into some blocks and each block may be executed in a predetermined order. As an example of the block division, the first block (steps 4 to 10) and the second block (steps 11 to 1)
6), third block (steps 17 to 14), fourth block (steps 15 to 20), fifth block (steps 21 to 2)
2), the sixth block (steps 23 to 27), and the seventh block (step 28). If these blocks are executed in an arbitrary order, and if two or more transfer commands occur, which transfer is prioritized is programmed,
The utilization efficiency of the entire mold material extrusion device is further enhanced. An example of a preferred transport priority order is one in which heating completed dies have the highest priority, and die rearrangement has the lowest priority. According to this specific example, (i) the dies are arranged on the die arranging table in the order of the extrusion schedule, and (ii) the die at the earliest extrusion schedule is called from the die arranging table.
i) The die called in (ii) is transferred from the die arrangement table to the low-frequency heating furnace. (iv) At the end of extrusion, the next extrusion die is passed from the soaking furnace through the stock yard or die slide, or without it. If the bolster corresponding to the die conveyed by (v) and (iv) is on the bolster rearrangement table, the bolster is conveyed from the bolster rearrangement table to the stock yard or die slide, and (vi) Extrusion. In order to transfer the dice and bolsters from the machine to the die sorting table or the transportation means outside the moving route and to the bolster sorting table, the priority order is (vi), (v),
The order is (iv), (iii), (ii) and (i).

Next, an example of the processing program in the case where the determination result of step 21 is NO will be described.

In step 29, it is judged whether or not the die X of the next extrusion schedule is heated at a low frequency, and if NO, the step is performed in order to heat the die X at a low frequency.
Perform 30 or less processes. In step 30, it is judged whether or not there is an empty address in the soaking pit, and if NO, the processes after step 33 described later are performed in order to extract one die of the soaking pit during heating. If step 30 is YES, check the number of empty addresses in step 31, and if NO (if one), stop low frequency heating halfway and return the die from the low frequency heating furnace to the empty address of the die sorting table. (Steps 32, 34). Then step 4
Process. There are two or more empty addresses in the soaking pit (Step 31
-If yes, go to step 4. Die X is low frequency heated in step 29 (step 29-YES)
If so, determine whether there is an empty address in the soaking pit (step
35), if YES, move to step 12; if NO, select the die with the latest extrusion schedule among the soaking dies (step 33), and transfer the selected die from the soaking oven to the die sorting table. Yes (step 37).

After that, the processing from step 4 onward is performed. According to these steps 29 to 37, although the heat energy is lost by stopping the heating midway, it is possible to completely cope with the change of the extrusion schedule.

In the above description, the case where the transport means is an automatic hand and there is a stockyard has been described, but the present invention can be carried out in a similar manner with some modifications when using a hoist and / or a die slide. You can For example, when a pair of dies are arranged, and one of the dies is located in the die mounting portion of the extruder, and the other die is located outside the mounting portion, the die slide configured to be reciprocally movable is used. When the next extrusion die transport signal is generated, the die can be transported to the die slide by the transport means and then moved to the extruder by the die slide.

Furthermore, in the case of an unexpected accident, a manual alarm signal is generated, and when this alarm signal is detected, the low-frequency furnace and soaking heat are waited for until the execution of any step is completed. It is also possible to write an emergency program in ROM that sequentially takes out the dies from the furnace and then returns them to the dies sorting table.

Effect (1) Since the die and the bolster can be automatically combined, the waiting time consumed before the start of extrusion after soaking the die is shortened.

(2) The equipment cost is low because all the work from low frequency heating of the die to the work of assembling the die into the extruder is performed by one auto hand or the like.

(3) Changing the extrusion schedule can be effectively dealt with by allowing the auto hand to perform die rearrangement on the die arrangement table.

(4) By automating the work from low-frequency heating of the die to the end of extrusion and replacement / change of the die (bolster), it is possible to effectively use the extrusion equipment and save labor.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a die extrusion factory, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIG. 4 is a sectional view of a combined die and bolster. FIG. 5 is a partial plan view of an extruder equipped with a die slide. FIG. 6 is a block circuit diagram of a die / bolster combination device according to the present invention. FIG. 7 is an electronic circuit diagram of FIG. (A)-(e) is a figure which shows the flowchart of the program written in ROM of FIG. 1 ... Die organizer, 2 ... Low frequency heating furnace, 3 ... Soaking furnace, 4 ... Stockyard, 5 ... Bolster organizer, 10
…… Dice, 18 …… Burner, 20 …… Auto hand, 30
…… Bolster, 40 …… Hoist, 50 …… Die slide,
51 …… Mobile base, 56 …… Combined die and bolster, 60 …… Extrusion schedule setting / changing means, 80 ……
Transport instruction means, 82 ... Extruder, 100 ... Extrusion schedule input boat, 110 ... Display device.

Claims (2)

(57) [Claims] 1. An aluminum die extruding die (hereinafter referred to as "die") composed of a die body, a backer and a die ring is heated at a low frequency current and then is brought into contact with a heat medium to be soaked and soaked. In the method of combining dies with a bolster, a plurality of dies are arranged in a predetermined arrangement order on a die arrangement table having an arrangement address, and a plurality of bolsters are arranged on a bolster arrangement table having an arrangement address. The die number of a plurality of dies and the die number of the bolster used for extrusion together with the die selected for extrusion are stored in a storage device, and one die is loaded into the low frequency heating furnace from the die arrangement table. Low-frequency heating, low-frequency heated dies are loaded into the unequipped positions of the dies of the soaking furnace where the die array addresses are determined, and the die number of the loaded dies is the soaking furnace. It is stored in the storage device together with the array address of, and any one of the dies placed in the soaking pit is extracted and transported to the stockyard or die slide, and it corresponds to the dies extracted from the soaking pit. Transport the bolster from the bolster organizer to the stock yard or die slide, combine them into an aluminum profile extruder, and if the bolster organizer does not have the corresponding bolster, only the die to the aluminum profile extruder. A method of combining a die and a bolster when heating an aluminum die extrusion die, which comprises transporting and returning the used bolster to the original bolster arrangement table. 2. A device for combining a die heated by a low frequency heating furnace for heating one die and then soaked by a soaking furnace for heating with a heat medium with a bolster, and The die arranging table has an array address for arranging and arranging a plurality of dice in the order set by, (b) A stockyard or die slide that combines dies and bolsters, and (c) an array address. Bolster organizer, (d) Die / bolster-compatible model number storage means for storing the bolster model number corresponding to the die model number, (e) Storing the model number of the die heated in the low-frequency heating furnace First storage means, (f) Second storage means for storing the die number of the die soaked in the soaking furnace together with the die array address, (g) the die sorting table (a) Third storage means for storing the die number of the arrayed dice together with the array address, (h) Fourth storage means for storing the die number of the bolster arrayed on the bolster sorting table (c) together with the array address, ) Fifth storage means for storing the die number of the die used for extrusion, (e) the low-frequency heating furnace, soaking furnace, die sorting table (a), stockyard or die slide (b),
Dies and / or between the bolster arranging table (c) and the extruder
Or, one transfer means for transferring and arranging the bolster, (l) Extrusion schedule setting and changing means, (e) Comparison of the standard heating time or temperature of the die in the low frequency heating furnace with the actual heating time or temperature. 1 control means, (w) second control means for comparing the standard heating time or temperature of the dies in the soaking furnace with the actual heating time or temperature, (f) arrangement from the third storage means (g) to the die arrangement table Is a conveyance command means for receiving a signal of the designated model number, a conveyance and arrangement signal from the extrusion schedule setting and changing means (l), and transmitting this signal to the conveyance means (e), and a conveyance operation state. Is identified as one of the following (i) to (Viii), and the first control means (e) and the second control means
Receiving a signal from the control means (W), further receiving a signal from the first storage means (E) to the fourth storage means (H), and continuing extrusion in the extruder from the extrusion schedule setting and changing means (L). By receiving the signal and the signal of the die number of the die to be used for the next extrusion, and further receiving the die number of the die currently used for the extrusion from the fifth storage means (i), (i) The dies are arranged on the die arrangement table (a) in the order of the extrusion schedule, (ii) the die at the earliest extrusion schedule is called from the die arrangement table (a), and the dies called in (iii) and (ii) are mentioned above. The die is transferred from the die sorting table (a) to the low-frequency heating furnace, and (iv) the die is lowered after a signal is generated from the first control means (e) that the low-frequency heating at a predetermined temperature and time is completed. Transfer from high frequency heating furnace to soaking furnace Then, (v) at the end of extrusion, a signal that the next extrusion die among the dies of the model number stored in the second storage means (f) has been soaked for a predetermined temperature and time is given by the second control means. When generated from (wa), the next extrusion die is conveyed from the soaking furnace to the extruder through the stock yard or the die slide (b) or not, and is conveyed by (vi) and (v). When the bolster corresponding to the die to be processed is on the bolster control table (c), the bolster is transferred from the bolster control table (c) to the stock yard or die slide (b), and (vii) die material extrusion schedule. In accordance with the above, a signal for returning the die from the extruder to the die rearrangement table (a) or to the outside of the movement route of the discharging means and returning the used bolster to the original position of the bolster rearrangement table (c). When (viii) (i)-(vii) is being transported or arrayed, another unloading or array is made to wait, and (ix) When there is no vacant address at the transportation destination. Is a device for combining a die and a bolster at the time of heating the die for extruding an aluminum mold, which comprises a conveyance instruction means for generating a signal for waiting the conveyance.