JPH0159064B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a horizontal clamped vertical casting type die casting machine, and particularly to the structure of its molten metal casting portion.

[Prior art] In the past, many die-casting machines had the mold clamping direction and the injection direction in the same direction, but in recent years, molten metal has been injected from below into a mold that is clamped horizontally. Horizontal clamping and vertical casting die casting machines have been developed.

Vertical casting type die casting machines are characterized by the fact that the length of the molten metal in the casting sleeve before injection is short and the temperature drop of the molten metal is small. There are many advantages, such as less mixing and fewer cavities caused by gas in the casting sleeve, and effective pressure transmission due to the injection plunger facing the cavity when filling is completed. Although this method has excellent features, there is a problem in that the molten metal solidified on the side wall surface of the casting sleeve enters the cavity due to the temperature drop during injection, deteriorating the quality of the product.

Therefore, the present applicant proposed a die-casting method and apparatus disclosed in Japanese Patent Publication No. 58-55859 to prevent the intrusion of this coagulated material.

In this device, a halved cylindrical fixed sleeve is fitted vertically to the bottom of a fixed mold and a movable mold that are arranged horizontally. The cast-in sleeve is joined. A plunger that moves forward and backward in the vertical direction is fitted into the casting sleeve by a vertical casting injection cylinder. A small diameter constriction is formed between the mold cavity and the inner hole of the fixed sleeve. Further, an injection device such as a vertical casting mold injection cylinder is hung from a horizontal lower column on the mold clamping device side.

With this structure, when the plunger is moved forward after pouring metal into the casting sleeve in the lowered position and raising it to join with the fixed sleeve in the mold clamping state, the casting sleeve is moved forward. The molten metal inside is cast into the cavity through the inner hole and constriction of the fixed sleeve. Then, the shell, which is a thin cylindrical solidified material formed along the inner peripheral surface of the inner hole of the fixed sleeve during casting, is compressed in an accordion shape between the plunger and the flat surface of the step in front of the constriction. By performing the casting, the shell remains in the inner hole of the fixed sleeve, and intrusion into the cavity can generally be prevented. After the casting is completed, the product solidified and taken out from the cavity is accompanied by a so-called biscuit, which is a solid substance left above the plunger, through the solid substance in the constriction, but a thin solid substance corresponding to the constriction is attached to the product. This can be easily removed by folding the object.

[Problems to be Solved by the Invention] In the conventional device described above, the injection device was suspended from a column on the side of the horizontal mold clamping device. When it was necessary to change the thickness of the fixed mold and the position of casting into the mold, it was necessary to move the injection device each time in the mold opening direction, and this movement was extremely troublesome. .

In addition, in the conventional device described above, in order to prevent the solidified layer formed on the inner circumferential surface of the casting sleeve from entering the mold cavity as much as possible, a constriction is formed in the portion leading from the upper end of the fixed sleeve to the mold cavity. is provided, but this alone is not sufficient.
Preventing the solidified layer from entering the mold cavity was not sufficient. If the solidified layer gets into the path to the mold cavity or inside the mold cavity, the hot water circulation will not be sufficient, and it will remain on the surface or inside of the cast product, resulting in a defective product. Ta.

[Means for Solving the Problems] In the present invention, in order to solve the above-mentioned problems, the runner for pouring molten metal is installed diagonally from the top of the injection sleeve vertically attached to the lower part of the mold. A vertical gate, which was provided facing upward and communicated from the upper end of the obliquely provided runner to the lower part of the mold cavity, was provided at a position offset from the vertical central axis of the injection sleeve.

In addition, the injection sleeve may be structured to have a recess on the inner peripheral surface near the top, or the runner provided diagonally may have a recess at the end of the upper part and on the side where the runner faces diagonally. The structure was designed to

[Operation] When the mold is clamped and molten metal is poured from the injection sleeve of the vertical casting mold, the molten metal passes through a runner that faces diagonally upward from the top of the injection sleeve and is poured into the mold cavity from below. At this time, the solidified layer formed on the inner circumferential surface of the injection sleeve is caught in the recess provided at the top of the injection sleeve and runner, and is also broken into pieces due to the flow of the molten metal at the point where it moves from the top of the injection sleeve to the runner. Therefore, a large lump of solidified layer does not enter the mold cavity, making it easier to obtain a high-quality cast product.

In addition, since the runner is provided facing diagonally upward, there is no need to move the vertical casting device in the clamping mold opening direction depending on the thickness of the fixed mold.
It can be kept fixed at all times.

[Example] Next, the present invention will be explained in more detail with reference to an example shown in the drawings.

In Figures 1 and 2, the die casting machine 21
The machine includes a horizontal mold clamping unit 22 and a vertical casting unit 23, and the entire horizontal mold clamping unit 22 is fixed on a machine base 24 fixed on a floor surface. The machine base 24 is integrally formed with a pair of left and right support members 24a extending in the length direction of the machine base, and a connecting member 24b (general one not shown) connecting both ends of the support members 24a. A pair of left and right slide plates 24c, which are elongated slide members each having a flat rectangular cross section, are integrally formed in parallel with each other at the upper ends of the left and right support members 24a. The fixed platen 25 of the horizontal mold clamping unit 22 is a substantially square vertical member 25a having sufficient rigidity.
and a horizontal member 2 extending in the horizontal direction from its lower end excluding the portions on the left and right slide plates 24c.
5b, and is fixed to the machine base 24 by fixing the lower end of the vertical member 25a to the slide plate 24c with a plurality of bolts. The horizontal member 25b of the fixed platen 25 has a width indicated by the symbol w in FIG. 2 that is slightly smaller than the interval between the slide plates 24c indicated by the symbol w1, and is not fixed to the machine base 24.
It is configured to bend downward, albeit slightly, when an external force is applied in the vertical direction. A cylinder platen (not shown) is fixed to the other end of the machine base 24 so as to be movable and adjustable, facing a fixed platen 25. The fixed platen 25 and the cylinder platen are connected to each other by a column 27 fixed with a nut 26. The four sections are connected together. A movable plate 28 faces the fixed platen 25 and has a column 27 fitted therein, and is formed to be movable on the slide plate 24c in the direction of distance from and near the fixed platen 25, and between it and a cylinder platen (not shown). are connected by a toggle mechanism 29. 30 is restricted from moving up and down by a key 31 provided horizontally on the fixed plate 25, and is positioned in a direction perpendicular to the plane of the paper by a key 31a provided vertically in the center of the fixed plate 25. It is a fixed mold, and 32
is a movable mold mounted on a movable platen 28 whose movement in the vertical direction is regulated by a key 33, and both molds 30 and 32 are joined to be horizontally openable and closable with a dividing surface 34 as a boundary. ing. Here, the reason why the vertical key 31a is provided between the fixed platen 25 and the fixed mold 30 on the center line of the machine is that the key 31a is provided on the mating surface of the fixed mold 30 and the movable mold 32 on the center line of the machine. This is to easily align the horizontal center of the fixed mold 30 with a casting sleeve 58 (described later) of the vertical casting unit 23 provided below.

39 is a product extrusion device that extrudes the cast product from inside the cavity 35.

The dividing surface 34 between the fixed mold 30 and the movable mold 32 is
As shown in FIG. 1, the positions of the cavity 35 and the mounting portion of the fixed sleeve 38, which is the lower end of the mold, are different. That is, in the example shown in FIG. 1, the dividing surface 34 at the lower end of the mold is close to the fixed platen 25, and the dividing surface 34 in other parts including the cavity 35 is located far from the fixed platen 25. The dividing surface 34 is shaped like a hook. And mold 3
A vertical hole 37 opening downward from the bottom and a half-cylindrical fixing sleeve 38 fitted into the vertical hole 37 are provided at the lower end of the dividing surface 34 of 0 and 32. A runner 36 for pouring molten metal, which is also a constriction part, is provided diagonally from the top of the hole 37 along the diagonal dividing surface 34, and from the upper end of the diagonally provided runner 36, the cavity 35 is inserted. A vertical gate 36a leading to the lower part is provided. Therefore, the horizontal position of the gate 36a is offset from the vertical central axis of the fixed sleeve 38.

The fixed sleeve 38 has an inner peripheral surface near the top.
A ring-shaped groove 38a is provided. Furthermore, at the upper end of the diagonally provided runner 36, a recessed portion 36b is provided on the side where the runner 36 faces diagonally, in a portion continuing from the vertical gate 36a. These grooves 3
8a and the recess 36b both capture shells, which are solidified molten metal, formed on the inner circumferential surface of the fixed sleeve and the casting sleeve 58, which will be described later.
This is provided to prevent the shell from entering inside the hole. A groove 3 is formed on the inner peripheral surface of the fixed sleeve 38.
8a, the distance from the top of the fixed sleeve 38 to the upper surface of the groove 38a is
8 and within 0.15 times the diameter of the inner peripheral surface of the concave groove 38a.
It is preferable to set the ratio between the depth and the width in the vertical direction to be about 5:1 to 0.5:1 in terms of capturing the coagulated layer.

On the other hand, the vertical casting unit 23 is equipped with four tie rods 40 whose upper ends are screwed into screw holes provided in the horizontal member 25b of the fixed platen 25 and hang down. It passes between the members 24a and is inserted into a bit 41 provided below the floor surface. 42 is a pair of support members 42
A frame integrally formed in a rectangular frame shape with connecting members 42b and 42c at both ends thereof,
Two tie rods 40 are inserted into each support member 42a by threaded portions at their lower ends, and by screwing and tightening a pair of upper and lower nuts 43 and 44 to each tie rod 40, the frame 42 is held in a horizontal state. is strongly supported.

The injection device 45 is supported by the frame 42 so as to be freely tiltable. That is, the injection device 45 includes a clevis-shaped injection cylinder 55 that is swingably supported by the frame 42 . That is, tilting shafts are provided on both sides of the rod-side block 46 of the injection cylinder 55.
The entire injection device 45 is supported by the frame 42 so as to be freely tiltable by supporting this tilting shaft with the shaft hole of the frame 42. Reference numeral 52 denotes a pair of docking grams that stand upright on both sides of the rod-side block 46, and have a main part shaped like a round bar.
The cylinder hole is slidably fitted. The sleeve frame 53 is integrally formed with a coupling receiving part 53b at the lower end, cylinder parts 53c extending upward from both sides thereof, and a sleeve support part 53d connecting the cylinder parts 53c on both sides at the upper end. It is configured to rise from the illustrated position by introducing pressure oil into the cylinder hole. In FIG. 2, 54a is a stopper fixed to the fixed platen 25 to restrict the upper limit of the sleeve frame 53, and 54b is a stopper fixed to the frame 42 to restrict the lower limit of the sleeve frame 53.

The injection cylinder 55 has a cylinder tube 50
A piston rod is provided which is moved up and down by the introduction of pressure oil into the frame 46, and this piston rod passes through a rod hole in the frame 46. Reference numeral 58 denotes a cast sleeve formed into a cylindrical shape and fixedly supported by the sleeve support portion 53d at the upper end of the sleeve frame 53, and the plunger 5 is disposed inside the cast sleeve 58.
A plunger tip, which is the tip of the plunger 59, is pivotally supported so as to be able to rise and fall freely, and the lower end of the plunger 59 is connected to the injection cylinder 5 by a coupling 60.
It is concentrically connected to the piston rod 56 of No. 5. The outer peripheral surface of the lower end of the coupling ring 60 is
It is adapted to be able to come into contact with and separate from the inside of the upper surface of the coupling receiving portion of the sleeve frame 53. The cast sleeve 58 is attached to the sleeve frame 53
As the plunger 59 rises, the plunger 59 fits into the vertical hole 37 shown in FIG. It is configured to rise along the A centering ring 62 is fixed to the horizontal member 25b of the fixed platen 25 and guides the casting sleeve 58.

Next, a tilting device for tilting the entire injection device 45 for pouring will be described. The rod side block 46 of the injection cylinder 55 and the head cover are vertically connected on one side by a pair of connecting plates 63, and the connecting member 4 of the frame 42
A pair of brackets 64 are fixed to 2b and project diagonally downward. 65 is bracket 64
The piston rod 67 is a tilting cylinder rotatably supported via a bearing 66, and the working end of the piston rod 67 is pivotally connected to the connecting plate 63 by a pin 68, and the piston rod 67 is moved forward and backward by pressure oil. As a result, the entire injection device 45 is configured to stand upright and tilt between the solid line position and the chain line position in FIG. Further, a striker 6 is provided at the shaft end of the tilting shaft that rotates integrally with the injection device 45.
9 is fixed, and a pair of upper and lower limit switches 70, 71 corresponding to the active end of the striker 69 are fixed to the frame 42, so that the rising and tilting operations of the injection device 45 are stopped by contact between these switches. It is configured.

The operation of the die casting machine configured as above will be explained.

When the sleeve frame 53 and the plunger 59 are lowered as shown in the figure and the injection device 45 is upright, when pressure oil is introduced to the rod end side of the tilting cylinder 65 and the piston rod 67 is retreated, the entire injection device 45 is tilted about the tilting shaft 51 to the chain line position, and stopped by the contact between the striker 69 and the limit switch 70.
Therefore, after injecting molten metal into the casting sleeve 58 using the ladle of the hot water supply device, pressurized oil is introduced into the head end side of the tilting cylinder 65 and the injection device 45 is rotated. Due to the contact, the injection device 45 is stopped in an upright position.

Prior to this, on the other hand, the movable platen 28 is being moved forward by the mold clamping cylinder via the toggle mechanism 29, and the mold clamping of both molds 30 and 32 has been completed, so that the cylinder hole in the sleeve frame 53 and By sending oil to the injection cylinder 55 at the same time, the sleeve frame 53 rises leaving the dotting ram 52 while the plunger 59 is lowered in the casting sleeve 58 to hold the molten metal, and the casting sleeve 58 moves into the vertical hole. It is inserted into the portion 37 and pressed against the lower end surface of the fixing sleeve 38. When the oil is further fed to the injection cylinder 55, the plunger 59 rises, and the molten metal is injected into the cavity 35 through the sleeves 58, 38, the runner 36, and the gate 36a.

At the time of this molten metal injection, the molten metal output is
2, and when the fixed platen 25 is completely fixed to the machine base 24, there is no escape for this molten metal pressure and the molds 30, 32 try to open. However, in this device, the vertical part of the fixed platen 25 25a has sufficient rigidity, while the horizontal member 25 of the fixed plate 25
b is located between the slide plates 24c of the machine base 24 and is not fixed, so the reaction force of the molten metal pressure acts downward on the horizontal member 25b, causing the horizontal member 25b to deflect by a minute amount. Therefore, this downward reaction force only causes the entire injection device 45 to swing a small amount together with the tie rod 40 through the deflection of the horizontal member 25b, but the vertical member 25a does not deflect and the molds 30, 32 won't open.

Immediately before the end of injection, a large injection pressure acts within the cavity 35 of the molds 30 and 32, and an injection reaction force acts on the horizontal member 25b of the fixed platen 25, causing it to bend slightly downward, causing the casting sleeve 58 to deform into metal. Type 30,3
2 tries to separate slightly from the lower fixed sleeve 38, but at this time, a thin solidified layer is formed on the surface of the molten metal that is in contact with the inner surfaces of the fixed sleeve 38 and the casting sleeve 58, so the fixed sleeve 38 and The molten metal does not blow out from the mating surface of the casting sleeve 58 and does not interfere with the injection operation.

Of course, the entire horizontal member 25b of the fixed platen 25 is designed so that the tip in the direction of the movable platen 28 is slightly raised upwards before injection, and during injection, due to the action of the injection reaction force, , the horizontal member 25b may be completely horizontal.

After the injection is completed and the molten metal is solidified and cooled, the pressure oil is removed from the cylinder hole in the sleeve frame 53, and the oil is sent to the rod end side of the injection cylinder 55 to lower the sleeve frame 53 and plunger 59 together. , the casting sleeve 58 is inserted into the mold 30,
After separating from the fixed sleeve 38 at the bottom of 32, the mold clamping cylinder is operated to open the mold,
The product is put into molds 30 and 32 using a product extrusion device 39.
One cycle is completed by taking out the data.

3 to 6 are longitudinal cross-sectional views showing different embodiments of the essential parts of the present invention, and FIG. 7 is a cross-sectional view taken along the line -- in FIG. 6.

In Figures 3 to 7, 30 is a fixed mold, 32 is a movable mold, 35 is a cavity, 34 is a dividing surface of the mold, and 38 is along a vertical line attached to a vertical hole 37 at the bottom of the mold. The fixed sleeve 38 that constitutes the injection sleeve is formed by a portion 38b fixed to the fixed mold 30 and a portion 38c fixed to the movable mold 32. 34a is a dividing surface of the fixed sleeve 38 formed on the same plane as a part of the dividing surface of the hook-shaped mold, that is, both parts 38b of the fixed sleeve 38 fixed to both molds 30 and 32; 38c is the surface that is in close contact when the mold is clamped. 38a is the fixed sleeve 38
This is an annular concave groove provided near or at the upper end of the inner circumferential surface, and is a groove for capturing the coagulated layer. 37a is the ceiling of the vertical hole 37, that is, the mold 3 with which the upper end surface of the fixed sleeve 38 comes into contact.
It is a flat part of 0.32.

36 is the top of the fixed sleeve 38 constituting the injection sleeve vertically attached to the lower part of the molds 30 and 32, that is, for example, the top installation part of the fixed sleeve 38 in the vertical hole 37 of the movable mold 32; From a certain ceiling 37a, upward in the mold opening direction,
The runner is provided along the diagonal dividing plane, and the lower end of the runner 36 is usually narrower than the cross-sectional area of the inner circumferential surface of the fixed sleeve 38, and is formed as a constricted portion. Reference numeral 36a denotes a vertical gate extending from the upper end of the obliquely provided runner 36 to the lower end of the cavity 35 along the vertical dividing plane. It deviates from the vertical center axis in the mold opening direction. A recess 36b is provided at the upper end of the obliquely provided runner 36 on the side where the runner 36 faces diagonally, that is, on the movable mold 32 side in the illustrated example. Note that the runner 36 faces diagonally in the mold clamping direction, and the cavity 35 is located closer to the fixed platen than the vertical axis position of the fixed sleeve 38, and contrary to the illustrated example, the cavity 35 of the fixed mold 30
When using molds 30, 32 with recessed portions, the recess 36b is provided in the fixed mold 30 at the upper end of the runner 36.

In the embodiment shown in FIG.
It was provided so as to be located between the central part of the position connecting the tops of a and the inner circumferential surface of the fixed sleeve 38 on the movable mold 32 side. The width of the runner 36 in the direction perpendicular to the plane of the drawing is considerably smaller than the radius of the circumferential surface of the fixed sleeve 38.

In the embodiment shown in FIG.
8d, and the runner 3 is inserted from the outer periphery of the notch 38d.
6 was provided facing diagonally upward.

In the embodiment shown in FIG.
8d, and the runner 36
was installed diagonally upward.

In the embodiment shown in FIGS. 6 and 7, the position of the fixed sleeve 38 including the upper surface on the movable mold 32 side, which is closer to the dividing surface 34a than the inner surface of the movable mold 32 side, and the position of the dividing surface 34a The runner 36 was provided diagonally upward from between the positions.

When molten metal is poured using an injection device having a fixed sleeve 38 or an oblique runner 36 structured as shown in FIGS. 3 to 7, the molten metal is fixed during the casting operation. It is pushed up from below the sleeve 38 and is cast into the cavity 35 through the runner 36 and gate 36a, but at this time, the molten metal that has formed on the inner peripheral surface of the casting sleeve 58 solidifies before injection. At the same time, the thin shell layer also rises on the inner circumferential surface of the fixing sleeve 38. At this time, since an annular groove 38a is provided on the inner peripheral surface of the upper part of the fixed sleeve 38, most of the coagulated layer enters the groove 38a and is almost captured there. In addition, a part of the solidified layer is in the molds 30, 3
The fixing sleeve 38 is crushed between it and the ceiling part 38a of the mounting part of the fixing sleeve 38 of No. 2. Alternatively, it will become small pieces in these parts. Furthermore, since the air layer in the groove 38a acts as a heat insulator, the coagulated layer becomes a little softer and flows more easily when passing through the inner peripheral surface of the groove 38a. In this way, most of the coagulated layer is captured or broken into small pieces in the groove 38a and the ceiling 37a. Therefore, it is almost impossible for the solidified layer to enter the runner 36.

Incidentally, for example, as shown in FIG. 6, the plunger attached to the tip of the plunger 59 is We investigated how the relationship between the position of the chip and the load, which is the output of the injection cylinder, changes during the injection operation. Figure 8 shows the relationship. However, in FIG. 8, the plunger tip position S is defined as 0, which is the position of the plunger tip where the tip of the molten metal contacts the lower end position of the mold runner 36, that is, the surface in contact with the upper end surface of the fixed sleeve 38, and the upper is expressed as a plus, and the downward direction is expressed as a minus. Moreover, the load T was expressed by the output of the injection cylinder.

As can be seen from FIG. 8, when the fixing sleeve 38 has the concave groove 38a as in one embodiment of the present invention, the plunger tip is almost completely filled until just before the cavity 35 is sufficiently filled with molten metal. This shows an ideal load curve and filling condition in which no load is applied, the load increases rapidly just before filling is completed, and the molten metal is completely filled and casting is completed.

On the other hand, as in the conventional case, the fixed sleeve 3
If there is no concave groove 38a in 8, when the molten metal starts to enter the cavity 35 of the mold, the load will gradually start to be applied and the load will increase quickly. Then, the load reaches its maximum value before the plunger tip has risen to the filling completion position. This indicates that the cavity 35 is not sufficiently filled with molten metal. In other words, this indicates that a defective cast product with chipped parts has been produced. In such a state, the solidified layer is not sufficiently captured before the constriction, which is the entrance of the runner 36, and enters the cavity 35 as a relatively large lump, preventing smooth flow and force transmission. It is thought that this is because of this.

By providing the groove 38a in the fixed sleeve 38 in this manner, the hot water flow is good, a large solidified layer does not form, and a cast product of high quality and high strength can be reliably and easily obtained.

The molten metal from which a large solidified layer has been removed by the grooves 38a, etc., enters the runner 36 and continues to be injected. At this time, as described above and as shown in FIGS. 6 and 7, if the entire entrance of the runner 36 is a constriction, the solidified layer will be crushed and captured there as well, but the third ~ As shown in Figure 4, if the entire entrance of the runner 36 does not have a constricted part and a part of it continues directly with the inner circumferential surface of the fixed sleeve 38, there may be some residual parts in the directly continuous part. A part of the coagulated layer is directly attached to the runner 3.
Trying to get inside 6. However, even in that case, since the runner 36 is provided in an oblique direction, when the solidified layer is about to move directly upward at the portion shown as A in FIGS. When the molten metal passes through the runner 36 or when it attempts to go in the direction of the runner 36, the molten metal crosses the section A. Therefore, the solidified layer in part A is broken into small pieces by this horizontal scraping of the molten metal. As a result, cavity 3
A large solidified layer does not enter the inside of the tube.

Further, at the upper end of the runner 36, the gate 3
Since a recess 36b is provided at the lower end inlet of 6a and on the side where the runner 36 faces diagonally, even if small pieces of the solidified layer are carried inside the runner 36 together with the molten metal, the solidified layer At the point where it turns over before entering the gate 36a, it enters the recess 36b, where it is further captured.

Therefore, almost no coagulated layer enters the cavity 35, and even if a small amount does enter, it is only a small piece and does not affect the quality of the product.

Note that when the runner 36 is provided diagonally upward, it can be used not only in the mold opening direction and the mold closing direction.
It can also be provided perpendicularly or diagonally to the mold opening/closing direction.

Further, in the above embodiment, the injection sleeve is constituted by the fixed sleeve 38, the fixed sleeve 38 is fixed to the lower end of the molds 30, 32, and the casting sleeve 58 is pressed against the lower end surface of the fixed sleeve 38. However, it is also possible to omit the fixing sleeve 38 and press the top of the casting sleeve 58 directly against the ceiling 37d of the vertical hole 37 of the molds 30, 32. In this case, the casting sleeve 5
8 constitutes an injection sleeve, and a groove 38a or a notch 38d is provided at or near the top of the inner peripheral surface of the casting sleeve 58.

[Effect] In the present invention, a runner for pouring molten metal is provided diagonally upward from the top of the injection sleeve vertically attached to the lower part of the mold, and the metal is poured from the upper end of the diagonally provided runner. The vertical gate leading to the lower part of the mold cavity is located at a position offset from the vertical center axis of the injection sleeve, so even if the position of the mold cavity and the thickness of the fixed mold change depending on the type of cast product. Since it is sufficient to use a mold in which only the runner part of the mold has been redesigned, there is no need to change the position of the injection device such as the injection sleeve at all.
Therefore, every time the mold is changed, there is no need to perform the extra work of adjusting the position by moving the injection device in the mold opening/closing direction, etc., as in the conventional method, which is extremely convenient. This is a great advantage in die casting machines where productivity and ease of mold replacement are important. Of course, since the injection device can be fixed from the beginning,
The injection device is held firmly, ensuring stable and reliable operation at all times, and there is no need for a device to move the injection device.

In addition, we installed a runner that faces diagonally upward from the ceiling where the injection sleeve is attached to the mold, so when the molten metal passes through this runner, even if there is a solidified layer, the solidified layer is pushed away by the molten metal. , the solidified layer becomes small pieces. Therefore, a solidified layer of large lumps does not enter the cavity, and it is possible to obtain a cast product of good quality with clean casting and sufficient strength.

In addition, if a groove is provided on the inner circumferential surface near the top of the injection sleeve, or a recess is provided at the upper end of the diagonally installed runner and on the side where the runner faces diagonally, it is possible to The solidified layer can be sufficiently captured in one part, and a high-quality cast product that is free from the solidified layer can be reliably and easily obtained.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, FIG. 2 is a partially cutaway front view of FIG. Fig. 7 is a cross-sectional view taken along the - line in Fig. 6, and Fig. 8 shows the casting position and load (injection cylinder FIG. 22...Horizontal clamping unit, 23...Vertical casting unit, 30...Fixed mold, 32...Movable mold, 3
5...Mold cavity, 34, 34a...Dividing surface, 36...Runner, 36a...Gate, 36b
... recess, 37 ... vertical hole, 38 ... fixed sleeve, 38a ... groove, 38d ... notch, 45
... Injection device, 53 ... Sleeve frame, 55
... Injection cylinder, 58 ... Casting sleeve, 59
...Plunger, 65...Tilt cylinder.

Claims (1)

[Claims] 1. A runner for pouring molten metal is provided diagonally upward from the top of the injection sleeve vertically attached to the lower part of the mold, and a mold cavity is inserted from the upper end of the diagonally provided runner. A horizontal clamping vertical casting type die-casting machine with a vertical gate leading to the bottom located at a position offset from the vertical center axis of the injection sleeve. 2. The horizontal clamping vertical casting die casting machine according to claim 1, wherein the injection sleeve has a concave groove on the inner circumferential surface near the top. 3. The horizontal clamping vertical casting mold according to claim 1 or 2, wherein the diagonally provided runner has a concave portion at the upper end and on the side where the runner faces diagonally. die casting machine.