JPH06126414A - Vertical type die casting machine having vertical die clamping and horizontal injection - Google Patents

Abstract

PURPOSE:To improve the filling ratio of a sleeve and the heat retaining property of molten metal by arranging the other upper and lower parting surfaces at the lower position in one step from a parting line of the upper and lower dies, fitting a two-slit type injection sleeve side ward to each of the upper and lower dies and supplying molten metal after clamping the die. CONSTITUTION:First, a movable die plate 17 fitting the movable die 19 is descended toward a fixed plate 12 fitting the fixed die 18 by working vertical die clamping mechanism and pushed to form a cavity 21 in both upper and lower dies and after die-clamping, the molten metal is supplied into the injection sleeve 25 formed into two splits to the other parting surfaces 26 arranged at the lower position in one step from the parting surfaces 22 of both upper and lower dies to separate both dies to upper and lower sides and fitted to the upper and lower dies, respectively, through a molten metal supplying device 33. After completing the supply of molten metal, immediately, the injection movement is executed, and by working an injection cylinder 28, an injection plunger 29 is advanced to inject and fill up the molten metal in the injection sleeve into the cavity 21 through a runner 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical die-clamping / horizontal injection vertical die casting machine having improved operability and maintainability, and more particularly to a hot water supply after die clamping.

[0002]

2. Description of the Related Art A conventional vertical die casting machine generally has a vertical mold clamping and vertical injection method, which will be described with reference to FIG. A fixed die plate 41 installed on the floor and a link housing 42 which is separated from the fixed die plate 41 by a predetermined distance are connected to each other by a plurality (usually four) of tie bars 43.
A movable die plate 47 is connected to the link housing 42 via a toggle link 46, and is slidably fitted to the tie bar 43. The movable die 49 is attached to the movable die plate 47 so as to face the fixed die 48 attached to the fixed die plate 41.
The toggle link 46 is coupled to the tip end of the cylinder rod 45 protruding downward from the mold clamping cylinder 44 fixed to the mold clamping cylinder 44, and the movable die plate 47 is moved up and down toward the fixed die plate 41 by the mold clamping cylinder 44 to vertically move the mold. It is opened and closed. A pit 50 is formed on the floor surface where the fixed die plate 41 is installed, and an injection unit including an injection cylinder 51 is hung in the fixed die plate 41 and is vertically clamped. And transfer mold 4
It is a vertical injection in which molten metal is injected into the cavities 8 and 49 (not shown) from below. The vertical die casting machine configured in this way has a smaller machine space than the horizontal die casting machine, the space around the machine can be used on four sides, and the vertical direction matches the gravity direction. It is about to be popularized by taking advantage of various advantages such as advantages.

[0003]

However, as shown in FIG. 6 and described above, in the conventional vertical die clamping vertical injection vertical die casting machine, the injection portion including the injection cylinder 51 is hung on the fixed die plate 41. Since it is arranged vertically in this state, the pit 50 is required on the floor surface on which the fixed die plate 41 is installed, and the installation cost is high. Moreover, since the injection part is in the pit 50, the operation of the injection part However, it is difficult for the operator to see, so the operability is poor, and the workability for maintenance is also poor.

Therefore, the present applicant has pointed out that all of the above problems are caused by the vertical injection, and that the vertical die clamping machine has many advantages due to the vertical die clamping. It has come to adopt a vertical die-casting machine with vertical clamping and horizontal injection. As the prior art of this system, FIG.
A brass die-casting machine called a tea slack type shown in FIG. In this machine, the chamber 52 is formed in the fixed lower mold 53 as a horizontal semi-cylindrical shape, and a semi-cylindrical piston 54 is slidably fitted therein, and
The chamber 52 leads from its runner to the cavity 55. Therefore, the molten metal is injected into the chamber 52 with the movable upper die 56 opened, and the upper die 56 is closed.
After closing the mold and clamping the mold, the piston 54 advances to perform casting. As a result, cooling and oxidation of the molten metal are unavoidable, and in addition, it is difficult to accurately fit the semi-cylindrical piston.

The present invention has been made in view of the above, and does not employ the conventional vertical mold clamping and vertical injection method, in which a pit is indispensable, and it is possible to perform mold clamping even in a conventional machine of vertical mold clamping and horizontal injection. It is an object of the present invention to provide a vertical die-clamping horizontal injection vertical die-casting machine capable of supplying hot water after mold clamping, which had previously been required to supply hot water.

[0006]

In order to achieve the above object, a vertical die-clamping horizontal injection vertical die casting machine according to the present invention comprises a fixed die plate to which a fixed die is attached, and a fixed die plate. A movable die plate slidably fitted to a plurality of tie bars standing above the movable die and having a movable die attached thereto, and a vertical die for moving the movable die plate up and down with respect to the fixed die plate to open and close the die. Tightening mechanism, injection mechanism,
In a vertical die casting machine equipped with a water heater,
Fixed and movable dies that form a cavity inside Separate dies provided at a position one step below the mold halves of the two dies, and separate halves for dividing the dies into upper and lower halves; A horizontal injection mechanism including an injection sleeve that is horizontally attached to the mold in half and communicates with the cavity through a runner, and an injection plunger that is slidably inserted in the injection sleeve and is moved forward and backward by an injection cylinder. And a hot water supply device for supplying molten metal to the injection sleeve.

In this case, the hot water supply device is connected to the hot water supply port provided at the lower part of the portion of the injection sleeve protruding from the upper and lower molds, the hot water supply port block pressed against the hot water supply port, and the hot water supply port block. It is preferable that the hot water distribution pipe and the electromagnetic pump-type molten metal furnace connected to the hot water distribution pipe are used.

[0008]

In the casting process by the vertical die clamping horizontal injection vertical die casting machine according to the present invention, first, the movable die plate attached with the movable die is fixed by the operation of the vertical die clamping mechanism with the fixed die attached. After descending toward the die plate and being pressed to form cavities in the upper and lower dies, the mold is clamped,
An injection sleeve which is provided at a position one step below the mold dividing surface of the upper and lower molds and is divided into two parts for dividing the mold into upper and lower parts and which is attached to the upper and lower molds in half and half. Within
The molten metal is supplied by the water heater. Immediately after the hot water supply is completed, the injection operation is started, the injection cylinder operates, the injection plunger is advanced, and the molten metal in the injection sleeve is injected and filled into the cavity through the runner. Next, the injection plunger is retracted, the movable die plate is raised, the mold is opened, the cast product is taken out, and one cycle is completed.

[0009]

Embodiments of the present invention will be described below with reference to FIGS. In FIG. 1, 12 is a fixed die plate, which is installed on the floor and has a fixed mold 18 attached to its upper surface. A movable die plate 17 is slidably fitted to a plurality (usually four) of tie bars 13 standing above the fixed die plate 12 and has a fixed die 18 on its lower surface.
The movable mold 19 is attached so as to oppose to, and the mold is opened and closed in the vertical direction by a mold clamping mechanism (not shown) to form a so-called vertical mold clamping. As for the mold clamping mechanism, a toggle link type mold clamping mechanism is used similarly to the structure described with reference to FIG. 4 in the prior art, and is fixed to a link housing (not shown) which is separated from the fixed die plate 12 by a certain distance. A toggle link is coupled to the tip of the cylinder rod protruding downward from the mold clamping cylinder, and the movable die plate 17 is moved up and down toward the fixed die plate 12 by the mold clamping cylinder. It should be understood that other mold clamping mechanisms such as a direct pressure type may be used as long as they constitute vertical mold clamping.

Reference numeral 21 denotes a cavity, which is formed on a mold dividing surface (parting line) 22 having the fixed mold 18 and the movable mold 19 as a lower mold and an upper mold. A product extruding rod 24 is inserted into the movable mold 19 toward the cavity 21, and can be moved forward and backward by the product extruding device 23. Reference numeral 25 denotes an injection sleeve, which is formed in two and is provided with another dividing surface 26 which is vertically divided by one step below the die dividing surface 22 in the mating surface between the fixed die 18 and the moving die 19 (FIG. (See 2) The split injection sleeve 25 is horizontally attached to the fixed mold 18 and the movable mold 19 in half. The runner (gate) 2 is provided between the cavity 21 and the injection sleeve 25.
7 are provided for communication. Further, the injection sleeve 2 is moved forward and backward by the injection cylinder 28.
9 is slidably inserted, and lateral injection is constituted by these.

Further, a hot water supply port 30 is provided below the portion of the injection sleeve 25 protruding from the fixed and movable molds 18 and 19.
Is provided to press the hot water supply port block (mouthpiece) 31 and is connected to the electromagnetic pump type hot water supply device 33 via the hot water distribution pipe 32. Although the immersion type electromagnetic pump is illustrated in FIG. 1, a separate type electromagnetic pump can also be applied. In this case, the hot water supply device is not limited to the electromagnetic pump type, and may be another molten metal pumping device. Further, as another example of the hot water supply device, a hot water supply port provided at the upper part of the projecting portion of the injection sleeve 25 to provide hot water supply by a ladle does not depart from the gist of the present invention. That is clear.

Next, the operation of the vertical die-clamping horizontal injection vertical die-casting machine having such a structure, that is, the casting process, will be described with reference to FIGS. FIG. 3 shows a mold clamping and hot water supply process, in which the movable die plate 17 descends toward the fixed die plate 12 and the upper movable mold 19 is moved to the lower fixed mold 18 by the vertical mold clamping mechanism. After pressing and clamping the mold,
The electromagnetic pump is operated by the hot water supply device 33 to supply the molten metal into the injection sleeve 25 through the hot water pipe 32, the hot water supply port block 31, and the hot water supply port 30. FIG. 4 shows an injection process. Immediately after the hot water supply is completed, the injection operation starts, and the injection cylinder 28 operates to advance the injection plunger 29 so that the molten metal in the injection sleeve 25 passes through the runner 27 and the cavity 21.
Injection filled inside. FIG. 5 shows the mold opening process, in which the injection plunger 29 is retracted and the upper moving mold 1 is moved.
After raising 9 to make the mold open, the product extruding device 23 is operated to lower the product extruding rod 24, the cast product 34 is taken out, and one cycle of the casting process is completed.

[0013]

In the vertical die clamping horizontal injection vertical die casting machine according to the present invention as described above, the vertical die clamping mechanism maintains the advantages of the vertical casting machine, and the horizontal injection mechanism is employed. Since the pit construction, which was indispensable for installation in the conventional vertical injection mechanism, is unnecessary, the installation cost can be reduced, and at the same time, the operability of the injection part and the workability of maintenance can be eliminated. . In addition, in the horizontal injection mechanism of the present invention, another upper and lower split surface is provided at a position one step below the parting line of the upper and lower molds, and a split injection sleeve is laid horizontally in half of the upper and lower molds. Since it has a structure that allows hot water to be supplied after the mold has been clamped, it solves the drawbacks of conventional vertical mold clamping / horizontal injection that was used to supply hot water before mold clamping. A sleeve filling rate of 50% or more is possible, and by injecting immediately after hot water is supplied, the heat retention of the molten metal is improved, and the temperature drop of the molten metal is reduced, making it possible to maintain a lower speed than before. It is possible to fill molten metal and improve casting quality.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of a vertical die clamping horizontal injection vertical die casting machine according to the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a cross-sectional view showing a mold clamping and hot water supply process in the casting process of the embodiment of FIG.

FIG. 4 is a cross-sectional view showing an injection step in the casting step of the embodiment of FIG.

5 is a cross-sectional view showing a mold opening process in the casting process of the embodiment of FIG.

FIG. 6 is a schematic view showing a conventional vertical die clamping vertical injection vertical die casting machine.

FIG. 7 is a schematic view showing a conventional die clamping machine for teeth clamping type brass with vertical clamping and horizontal injection.

[Explanation of symbols]

 12 Fixed Die Plate 13 Tie Bar 17 Moving Die Plate 18 Fixed Die 19 Moving Die 21 Cavity 22 Mold Dividing Surface (Parting Line) 23 Product Extruding Device 25 Injection Sleeve 26 Separate Dividing Surface 27 Runway (Gate) 28 Injection Cylinder 29 Injection Plunger 30 Hot Water Supply Port 33 Electromagnetic Pump Type Hot Water Supply Device

Claims (1)

[Claims] 1. A fixed die plate having a fixed die attached thereto, and a movable die plate having a movable die attached thereto slidably fitted to a plurality of tie bars erected above the fixed die plate. In a vertical die casting machine equipped with a vertical mold clamping mechanism that raises and lowers the movable die plate relative to the fixed die plate to open and close the die, an injection mechanism, and a water heater, fixing and moving to form a cavity inside. A separate dividing surface provided at a position one step lower than the mold dividing surfaces of the two molds to divide the two molds into upper and lower parts, and two molds formed in two and attached to the upper and lower mold parts in a lateral direction in half. A horizontal injection mechanism including an injection sleeve that is communicated with the cavity through a runner, and an injection plunger that is slidably inserted in the injection sleeve and is moved forward and backward by an injection cylinder; A vertical die-clamping horizontal injection vertical die casting machine characterized by comprising a hot water supply device for supplying molten metal. 1. A hot water supply device is provided with a hot water supply port provided at a lower portion of a portion of an injection sleeve protruding from both upper and lower molds, a hot water supply port block pressed against the hot water supply port, and connected to the hot water supply port block. 3. A hot water distribution pipe and an electromagnetic pump type hot water supply furnace connected to the hot water distribution pipe.
Vertical die-clamping horizontal injection vertical die casting machine.