JP2003033856A - Equipment for casting mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for casting a mold, equipped with a small simple device for transferring a mold, which does not require the cease of operation of the equipment when the mold is repaired or replaced. SOLUTION: The equipment comprises: an injection device for injecting and filling molten metal into a pair of molds 17 constituting a movable mold and fixed mold; an injection station 1 equipped with a fixed board for mold clamping and a movable board 7 for mold clamping; an ejection station 2 equipped with a movable board 13 for opening and closing the molds which can move up and down; a mold replacement station which has a space for mold replacement operation; a mold transfer table 11 which can travel between the stations; the rails 5 for mold clamping member constituting a guide member when the table 11 travels; a table for mold replacement, of which the position is fixed on the fixed board for opening and closing the molds during the period of producing a cast product and which is made movable between the mold replacement stations during the period of mold replacement operation; rails 10 for a mold opening and closing member constituting a guide member used for moving the table 11 in and out of the injection station 1; a transfer means of the table 11;, and a transfer means of the table for mold replacement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shuttle type rigid die casting machine.

[0002]

2. Description of the Related Art In a vertical injection mold casting apparatus, two sets of mold opening and closing units each consisting of a mold and its temporary mold clamping mechanism are mounted on a trolley to reduce the casting cycle. The following two examples have been proposed as a so-called shuttle type vertical die casting machine that is a continuous casting device that performs mold clamping and casting while alternately taking in and out.

Japanese Utility Model Application Laid-Open No. 58-9725 proposes that two sets of mold opening / closing units are mounted on a long carriage extending from a mold clamping position to one external mold opening / closing position. But 1
Since two sets of mold opening / closing units are mounted on one dolly, if one of the mold opening / closing units fails, repair,
There was a problem that the entire casting apparatus could not be used during the replacement. Further, since the moving mechanism is a trolley in which two sets of mold opening / closing units are mounted, there is a problem that the structure becomes large and complicated. Further, when a pair of molds are directly carried into and out of the trolley by a crane in order to be introduced into the work area of the casting machine, the work setup becomes large, and the number of man-hours required for mold replacement increases. .

[0004]

[Problems to be Solved by the Invention] Actual Kaihei 5-30841
In the No. issue, the trolleys equipped with mold opening / closing units from the right and left sides of the mold are alternately put in and taken out so that even if one of the mold opening / closing units fails, casting can be continued by the other mold opening / closing unit. Has been done.

However, even in this apparatus, the temporary mold clamping mechanism is mounted on the carriage, which causes some problems. First, it is necessary to make the structure of the truck robust and to increase the size of the truck itself in order to support the weight of the temporary mold clamping device and the mold. Secondly, there are 3 types of dolly, temporary mold clamping device, and mold which are upsized.
Since the points move, there is a problem that the moving device and the supporting portion are largely consumed and the life of the device is short. Thirdly, it is necessary to move the hydraulic hose for controlling the temporary mold clamping device according to the movement of the temporary mold clamping device. Therefore, there are problems such as difficulty in arranging the moving hose and interference between the moving hose and other parts.

Therefore, an object of the present invention is to provide a die casting apparatus having a die moving apparatus having a simple structure and a small size, which does not stop the apparatus even when the die is repaired or replaced. .

[0007]

In order to solve the above-mentioned problems, a mold casting apparatus according to the present invention includes a pair of molds including an upper mold and a lower mold which constitute a movable mold and a stationary mold. An injection station equipped with an injection device for injecting and filling molten metal from below, a fixed plate for mold clamping for the pair of molds, and a movable plate for mold clamping that can be raised and lowered by a mold clamping mechanism, and adjacent to the injection station. A take-out station equipped with a fixed plate for mold opening / closing and a movable plate for mold opening / closing that is capable of moving up and down by an opening / closing mechanism, and is arranged adjacent to the take-out station. Mold exchange station having a space for exchanging molds for exchanging with other molds, and a pair of molds including the upper mold and the lower mold are mounted and fixed, and movable between the stations. A table, a mold clamping rail that is attached to a mold clamping fixed plate of the injection station and forms a guide when the mold moving table is taken in and out of the take-out station, and mold opening and closing of the take-out station It is detachable from the fixed plate for mold opening and closing, and its position is fixed on the fixed plate for opening and closing the mold during production of the cast product, and the fixing with the fixed plate for opening and closing the mold is released during the die replacement work. A mold replacement table configured to be mounted and fixed on the mold transfer table so as to be movable between the mold replacement station and the mold replacement table, and the mold transfer table is ejected from the mold replacement table. Die opening / closing section rails that form a guide when moving in and out of the station, moving means of the die moving table for moving the die moving table on each of the rails, the unloading station, and the die exchanging station Mold exchange with Consisting of a mold exchange table moving means for loading and unloading the use stage.

The mold clamping fixing plate has a cross section formed in a convex shape with a middle high portion and lower portions on both sides thereof, and is arranged such that the convex end surfaces face each other in the entering direction of the mold moving table. The mold clamping part rails are arranged in parallel on both sides of the upper surface of the lower part of the mold clamping fixing plate with a space equal to or larger than the width of the middle height part, and when the mold moving table is mounted, the mold moving table bottom surface. Is provided at a position higher than the upper surface of the middle height portion, and the lower surface of the mold moving table is brought into contact with the upper surface of the middle height portion to operate the mold clamping force when the movable plate for mold clamping is operated. It can also be received by a fixed plate for clamping.

The load holding mechanism has a supporting means for elastically supporting the lower surface of the rail body forming the mold clamping rail, and the height of the upper surface of the rail main body when the mold moving table is mounted is such that the mold opening / closing is performed. The adjusting means is provided so as to be the same as the upper surface of the partial rail.

The upper die holding mechanism may be configured such that the upper die can be attached to and detached from the movable platen for opening and closing the die.

An ejector mechanism for separating the cast product from the upper mold may be provided. A hydraulic cylinder may be used as the load holding mechanism.

As the upper die holding mechanism, a clamp mechanism operated by a pneumatic cylinder or a hydraulic cylinder can be used.

[0013]

According to the present invention, the mold opening / closing mechanism, the movable plate for mold opening / closing and the upper mold holding mechanism are provided on the fixed plate for mold opening / closing of the ejection station adjacent to the injection station, and the fixed plate for mold opening / closing is further provided. In the configuration in which the mold is mounted via the mold opening / closing section rail and the mold moving table, the upper mold holding mechanism is operated to attach the upper mold to the mold opening / closing movable plate, and then the mold opening / closing movable plate is moved. Lift and open the mold. A mold release agent is applied to the inner surface of the mold by a spray device (not shown).

After applying the release agent, the movable plate for opening and closing the mold with the upper mold is lowered to temporarily clamp the mold, and then the upper mold holding mechanism is released to move the movable plate for opening and closing the mold and the upper mold. Unlink the type.
This completes the preparation for the die delivery at the take-out station.

After preparation for the die delivery, the die moving table on the die opening / closing section rail on which the die is mounted is slid onto the die clamping section rail in the injection station by the moving device to enter on the die clamping stationary platen. Let

In the injection station, the movable plate for mold clamping is lowered to perform the main mold clamping, and the molten metal is supplied into the injection sleeve and injected into the cavity. Here, it is also possible to simultaneously operate a squeeze mechanism for locally pressing the inside of the cavity in the movable plate for mold clamping.

During the main mold clamping / casting, inside the other take-out station outside the injection station, preparation for delivery of the other die is performed.

When the cooling and solidification after the main mold clamping is completed, the movable plate for mold clamping is raised, and the mold moving table slides on the mold clamping part rail by the operation of the moving device with the mold mounted. It moves backwards and is moved onto the mold opening / closing rail of the original take-out station.

In the original take-out station, the upper mold holding mechanism is operated to clamp the upper mold on the movable plate for opening and closing the mold, and then the movable plate for opening and closing the mold is raised to open the mold.

Next, the cast product is extruded by the ejector mechanism built in the movable plate for mold opening and closing, and the cast product is taken out from the take-out station by a product take-out device (not shown).

When one mold is working at the take-out station, the other mold is cooled and solidified after the main mold clamping / casting on the injection station.

The above cycle is the casting process. When repairing a mold or exchanging it with another mold, a mold moving table with a pair of molds fixed to the discharge buffer of the mold exchanging station located adjacent to the mold ejecting station. Is fixed to the mold replacement table, and the mold replacement table is released from the mold opening / closing fixing plate and then moved.
Then, on the discharge buffer station, the fixing of the die moving table on the die exchanging table is released, and the die moving table is fixed to the new die moving table that has been loaded into the first standby buffer station in advance. Replace it with a pair of molds. In this replacement operation, the used mold on the mold replacement table is first moved to an empty second standby buffer station, and then a new pair of molds on the first standby buffer station is replaced with the new mold. The mold moving table is moved and clamped or fixed to the mold changing table. afterwards,
The die replacement table is moved to the unloading station. Therefore, this mold exchanging table is fixed to the mold opening / closing stationary plate on the take-out station, and the clamps of the mold moving table on which a new pair of molds are mounted are released.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a die casting apparatus according to the present invention will be described in detail below with reference to the accompanying drawings. Note that the same numbers are assigned to the same components in the left and right take-out stations.

FIG. 1 shows a front view of an embodiment of a mold casting apparatus according to the present invention, in which an injection station 1 is arranged in the center and take-out stations 2 and 2'are arranged on both sides thereof. Has become.

The injection station 1 is shown in FIG.
As shown in the line sectional view, it is a vertical mold clamping device similar to the conventional shuttle mold casting device. In the injection station 1, a fixed plate 4 for mold clamping and a movable platen 7 for mold clamping are provided so as to face each other, and a mold clamping mechanism 6 allows movable mold clamping in the axial direction (the vertical direction in the drawing is hereinafter referred to as the axial direction). The plate 7 is moved downward to clamp a pair of molds 17 composed of an upper mold 16 and a lower mold 14 on the mold moving base 11 in the axial direction, and the mold clamping axis is formed. Are arranged in the vertical direction so that they are vertical. An injection device 3 is provided below the injection station 1 to inject the molten metal in the mold clamped state.

As shown in FIG. 3, the upper part of the mold clamping platen 4 is formed in a convex shape having a middle high part and lower parts on both sides thereof, and the mold clamping platen 4 is perpendicular to the paper surface of FIG. Part rail 5
Are located in each lower part. The mold clamping fixed plate 4 is mounted with the mold clamping portion rail 5 and is paired with the mold clamping movable plate 7 so that the mold clamping mechanism 6 performs the mold clamping in the axial direction. The mold clamping part rail 5 contracts, and as a result, the convex middle height part of the mold clamping stationary platen 4 and the mold moving base 11 are joined to each other for mold clamping.

The mold clamping movable platen 7 is integrally mounted with the mold clamping mechanism 6 so as to be movable up and down so as to face the mold clamping fixed plate 4 and clamp the mold 17 in the axial direction.

The mold 17 is mounted and fixed on the mold moving base 11 as a pair of an upper mold 16 and a lower mold 14 which constitute a movable mold and a fixed mold, and the lower part of the lower mold 14 is ejected at the time of injection. Is injected through.

As shown in FIGS. 2, 4 and 5, the mold moving table 11 has a mold 17 mounted and fixed thereon to inject the injection station 1.
And the unloading station 2 are slidably moved on the mold opening / closing rail 10 and the mold clamping rail 5. A drive source of the die moving table 11 is a hydraulic cylinder 24 provided in the take-out station 2, and a tip of a piston rod 32 of the hydraulic cylinder 24 is connected to a member 32a protruding to both ends of the die moving table 11. The die moving base 11 is moved integrally with the movement of the piston rod 32.

Further, during the movement, the lower surface of the die moving table 11 is separated from the upper surface of the middle height portion of the die clamping fixing plate 4 to facilitate sliding. Further, at the time of mold clamping, since the mold clamping force is large, the spring 19 contracts, so that the lower surface of the mold moving table 11 is in close contact with the upper surface of the middle-high part of the stationary platen 4 for mold clamping, and the entire contact surface is closed. It is configured to withstand the tightening force. In addition, the fixed plate for mold opening and closing in the take-out station 2
There is no middle height, and there is no need to consider the above separation.

The mold clamping portion rail 5 is provided at a lower portion of the mold clamping stationary platen 4, and the rail body 5b contacting the lower surface of the mold moving base 11 is elastically supported by the spring 19 as shown in FIG. It Further, the rail main body 5b is fixed to the mold clamping fixing plate 4 by bolts 5a provided at a plurality of locations on the center thereof. At this time, the height of the upper surface of the rail body 5b which is crimped to the fixing member 34 is fixed to the fixing member 34 when the die moving table 11 having the die 17 mounted and fixed on the rail body 5b is mounted. The height of the upper surface of the mold opening / closing section rail 10 can be made equal by moving the bolt 5a up and down for adjustment. Therefore, the mold clamping unit rail 5 and the mold opening / closing unit rail 10 are smoothly joined, and the mold moving table 11 can slide.

Here, the spring 19, the bolt 5a, the fixing agent 34, and the rail main body 5b constitute the mold clamping portion rail in the present invention, and the bolt 5a, the spring 19, and the fixing agent 34 are the same. It constitutes a load holding mechanism for the rail body 5b in the invention.

As the load holding mechanism, the spring 19,
A hydraulic cylinder may be used instead of the bolt 5a and the fixing member 34, and the tip of the piston rod may support the rail main body 5b and the die moving base 11 on the rail main body 5 from below.

The injection device 3 is, as shown in FIG.
The molten metal supplied from the molten metal holding furnace 30 to the injection sleeve 33 via the electromagnetic pump 31 is injected into the mold 17 from below.

On the other hand, in the take-out station 2, as shown in the sectional view taken along the line BB in FIG. 4, after cleaning the inside of the mold and applying the mold release agent, the mold is temporarily clamped and the injection station 1 is reached. On the other hand, the mold is sent out, while the cast product after injection and cooling and solidification is taken out.

In the take-out station 2, a fixed plate 8 for opening and closing the mold and a movable plate 13 for opening and closing the mold are provided so as to face each other, and the movable plate 13 for opening and closing the mold is moved axially by the mold opening and closing mechanism 12 to move upward. A pair of molds 1 including a mold 16 and a lower mold 14.
7 is clamped in the axial direction or moved in the upward direction to move the upper mold 1
6 is moved in the vertical direction so that the mold clamping axis is vertical.

A fixed plate 8 for opening and closing the mold is provided under the table 11 for moving the mold.
A die exchange table 40 is attached between the above and the above. A mold opening / closing rail 10 is installed on the upper surface of the mold opening / closing movable plate 1
Opposite 3 In that state, the mold opening / closing section rail 10
The upper surface and the lower surface of the mold moving table 11 are configured to be joined to each other.

Locating pins 40A and 40B for fixing the horizontal position between the die exchanging table 40 and the die opening / closing stationary plate 8 are inserted by a cylinder device (not shown). As will be described later, when the die exchange table 40 moves to the discharge buffer station 50A of the die exchange station 50 shown in FIG. 2, the locating pins 8A and 8B move downward, so that the fixing plate 8 is not coupled. It is supposed to be released.

The mold opening / closing movable plate 13 is provided with an ejector mechanism 27 on its upper part and upper mold holding mechanisms 25 at both ends, and is opposed to the mold opening / closing fixed plate 8 to be integrated with the mold opening / closing mechanism 12. It is equipped so that it can be raised and lowered. Then, by moving downward, the die 17 is temporarily clamped in the axial direction, the upper die 16 clamped by the upper die holding mechanism 25 is moved upward, and the ejector mechanism 27 attaches the upper die 16 to the casting. Take out the goods.

The ejector mechanism 27 is used to separate the cast product from the upper mold 16 moved upward.

The upper die holding mechanism 25 presses the upper die 16 against the mold opening / closing movable platen 13 by using a clamp mechanism so that the upper die 16 can move together with the mold opening / closing movable platen 13. Although not shown, as the clamp mechanism, for example, a clamp piece utilizing the action of a lever is rotatably provided on a fixed shaft, and by pressing one end of the piece with the cylinder rod tip,
The other end of the bridge may be configured to press the lower surface of the upper end of the upper die about the rotation axis. At this time, the piece may be moved outward from the lower surface after the clamp is released so that the piece does not collide with the lower surface of the upper mold when the movable plate moves up and down. Further, four clamp mechanisms are installed on the movable platen 13 for opening and closing the mold, two on each side and four on both sides. Fix it.
The clamp mechanism does not need to be installed in the injection station 1 because the mold opening and closing is performed only in the ejection stations 2 and 2 '.

Next, the mold exchanging station 50 will be described with reference to FIG. As described above, the position of the mold exchanging table 40 is fixed by the locate pins 40A and 40B on the mold opening / closing fixed plate 8 during the forming and taking out of the cast product on the extracting station 2. When the mold replacement work is performed, the fixation of the mold replacement base 40 and the mold opening / closing fixed plate 8 is released, and in the released state, the mold replacement is performed by driving the cylinder 40C. Table 40
Is moved to the discharge buffer station 50A in the mold exchanging station 50 at the upper part of the figure with the mold moving table 11 and the pair of used molds 17 mounted and fixed thereon. On the other hand, a new die 17A replacing the die 17 and a die moving table 11A equipped with the die 17A are waiting in advance in the first waiting buffer station 50C by a crane or other loading means. The used mold moving table 11 and the pair of molds 17 are moved by the cylinder 60 to the empty second standby buffer station 50B. At that time, the tip of the rod of the cylinder 60 is engaged with the end of the die moving base 11 by a pin or the like.

Therefore, a space for receiving the die moving table 40 is provided on the die exchanging table 40 on the discharge buffer station 50A. Here, the discharge buffer station 50A is rotated by 90 ° as shown by an arrow, and a new pair of the mold 17B and the mold moving base 11B is moved by the cylinder 61 to the discharge buffer station 50A.
Move to.

The discharge buffer station 50A is then moved to 90 ° or the same direction 27 to return it to its original position.
After rotating 0 °, the cylinder 40 is moved to the take-out station 2.
It is moved by C.

In the example of FIG. 2 described above, the discharge buffer station 50A is rotating, but this is on the die exchange table 40.
This is because it is premised that the cylinders as the moving means 24 for moving the die moving table 11 are fixedly mounted on both sides, and such moving means 24 is fixed on the take-out station by another method. As a configuration, when the die moving table 11 does not interfere with the cylinder 24, the rotation driving of the discharge buffer station 50A described above is unnecessary.
For example, it is possible to configure one cylinder 24 and engage it at the center of the rear end of the mold moving table 11.

Although FIG. 2 shows an example in which the mold exchanging station 50 is provided adjacent to the take-out station 2 on the right side, a similar mold exchanging station can be arranged at the take-out station 2 on the left side. Is.

Further, although the first and second standby buffer stations 50B and 50C are arranged in FIG. 2, two standby buffers are necessarily provided if a part of the above-mentioned exchange operation is performed by using a crane or the like. You don't need a station. That is, one may be sufficient. Further, when moving the die exchange table 40 on the take-out station 2 and the die exchange station 50, a roller is appropriately fixed for opening and closing the die in order to reduce the driving force of the cylinder 40C and minimize the abrasion due to sliding. It is preferably arranged on the board 8.

[0048]

The mold casting apparatus according to the present invention is equipped with an injection device, a fixed plate for clamping and a movable plate for clamping that is moved up and down by a clamping mechanism, on both left and right sides of an injection station.
In a mold casting machine equipped with a take-out station equipped with a fixed plate for mold opening and closing and a movable plate for mold opening and closing that is moved up and down by a mold opening and closing mechanism, a pair of molds consisting of a lower mold and an upper mold is mounted and fixed. The mold moving table is placed on the mold opening / closing rail provided on the mold opening / closing fixing plate, and left and right on the mold clamping fixing plate via the mold clamping part rail provided on the mold clamping fixing plate. Since it can be individually taken in and out from both sides, it has a mold moving device with a simple structure and a small structure, and does not stop the device even when repairing or replacing the mold, and one take-out station If it fails, it can be used during repair or replacement. Further, what moves between the stations is a mold moving table on which a mold is mounted and fixed, and there is no mold opening / closing mechanism, so that the structure can be downsized and simplified.

Further, since the die moving table only supports the weight of the die, the die moving table has a minimum necessary structure and the die moving table itself can be downsized.

Further, since the pair of downsized molds and the mold moving table only move integrally, the moving device and the supporting portion are less consumed and the life of the device is extended.

Moreover, since the temporary mold clamping device is not moved, the hydraulic hose may be fixed, which solves problems such as wiring of the movable hose and interference between the movable hose and other parts.

Further, according to the present invention, since the mold exchanging station is arranged adjacent to the take-out station, the pair of used molds is exchanged with the mold moving table and the mold exchanging table mounted on the mold exchanging table. Since the mold is moved to the discharge buffer station in the station and the old and new molds are replaced there, the mold replacement can be performed extremely smoothly.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a die casting apparatus according to the present invention.

FIG. 2 is a view of an embodiment of the mold casting apparatus according to the present invention as seen from the upper surface of the mold moving table.

FIG. 3 is a cross-sectional view of an injection station in an embodiment of the mold casting apparatus according to the present invention.

FIG. 4 is a cross-sectional view of the take-out station in the embodiment of the mold casting apparatus according to the present invention.

FIG. 5 is a detailed view of a load holding mechanism in the embodiment of the die casting apparatus according to the present invention.

[Explanation of symbols]

1 injection station 2 take-out station 3 injection device 4 Fixed plate for mold clamping 5 Mold clamp rail 5a bolt 6 Mold clamping mechanism 7 Movable plate for mold clamping 8 type fixed plate for opening and closing 10 type opening / closing rail 11-type moving table 12-type opening / closing mechanism 13-type movable plate for opening and closing 14 Lower mold 16 Upper mold 17 Mold 19 spring 24 hydraulic cylinder 25 Upper die holding mechanism 27 Ejector mechanism 30 Molten metal holding furnace 31 Electromagnetic pump 32 piston rod 32a member 33 injection sleeve 34 Fixing member 40 Mold replacement table 40A, 40B Locating pin 50 mold change station 50A discharge buffer station 50B, 50C standby buffer station 60, 61 cylinders

Claims (8)

[Claims] 1. An injection device for injecting and filling a molten metal from below into a pair of molds composed of an upper mold and a lower mold constituting movable and stationary molds and a fixed plate for clamping the molds. And an injection station equipped with a movable mold clamping plate that can be moved up and down by a mold clamping mechanism, and a mold that is provided adjacent to each of the injection stations and is equipped with the mold opening / closing fixed plate and the upper mold and that can be moved up and down by the opening / closing mechanism. An unloading station equipped with a movable plate for opening and closing, a mold exchanging station that is arranged adjacent to the unloading station, and has a die exchanging work space for exchanging the pair of dies with another die,
A mold moving table that mounts and fixes a pair of molds including the upper mold and the lower mold and is movable between the stations.
A mold clamping rail that is attached to the mold clamping fixed plate of the injection station and forms a guide part when the mold moving table is moved in and out of the unloading station, and a mold opening / closing fixed plate of the unloading station. It is detachable, and its position is fixed on the mold opening / closing fixed plate during the production of the cast product, and when the mold is changed, the fixing with the mold opening / closing fixed plate is released and the mold is moved. A die exchange table configured to be mounted and fixed on the die exchange station so as to be movable, and the die movement table provided on the die exchange table between the injection station and the die exchange station. A mold opening / closing part rail that forms a guide part for loading and unloading, a moving means of the mold moving table that moves the mold moving table on each of the rails, and a metal mold between the unloading station and the mold exchanging station. Put out the mold replacement table Die casting apparatus comprising a mold exchange table moving means for being. 2. A buffer space in which at least one other pair of molds can be made to stand by in advance at the mold exchanging station, and a mold exchanging table is discharged from the take-out station. The mold casting apparatus according to claim 1, further comprising a discharge space. 3. The mold clamping fixing plate has a cross section formed in a convex shape with a middle high portion and low portions on both sides thereof, and is arranged such that the convex end surfaces face each other in the approach direction of the mold moving table. The mold clamping rails are arranged in parallel on both sides of the upper surface of the lower part of the clamping plate for the mold clamping with a space equal to or larger than the width of the middle height part, and when the mold moving table is mounted, the mold clamping part rail is for moving the same mold. A load holding mechanism for holding the lower surface of the base at a position higher than the upper surface of the middle height portion is provided, and when the movable plate for mold clamping is operated, the lower surface of the mold moving base is brought into contact with the upper surface of the middle height portion to make a mold clamping force. The mold casting apparatus according to claim 1 or 2, wherein the fixed plate for mold clamping is received. 4. The load holding mechanism has a supporting means for elastically supporting a lower surface of a rail body forming the mold clamping section rail, and the height of the upper surface of the rail body when the mold moving table is mounted is the above-mentioned. The mold casting apparatus according to claim 3, further comprising adjusting means for adjusting the mold opening / closing section to be the same as the upper surface of the rail. 5. The upper die can be attached to and detached from a movable plate for opening and closing the die by an upper die holding mechanism.
5. The die casting apparatus according to any one of 4 to 4. 6. The mold casting apparatus according to claim 1, further comprising an ejector mechanism for separating the cast product from the upper mold. 7. The mold casting apparatus according to claim 3, wherein the load holding mechanism uses a hydraulic cylinder. 8. The die casting machine according to claim 1, wherein the upper die holding mechanism uses a clamp mechanism which is operated by a pneumatic or hydraulic cylinder.