JPS5853167Y2 - Casting machine product extrusion equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a product extrusion device for a casting machine, and in particular, the product extrusion device is designed to be compact by integrating the support column □ that guides the product extrusion means and the cylinder device that causes the extrusion operation of the means. It is related to the device.

2. Description of the Related Art Casting machines such as die casting machines are equipped with an extrusion device, ie, an ejector device, for ejecting the cast product from the mold after casting.

The ejector device includes an ejector pin whose tip faces the product cavity of the mold, an ejector plate that supports the pin, and moves the ejector plate forward and backward.

It consists of an ejector rod and an ejector cylinder unit that drives the rod.

In conventional ejector devices, the ejector device is installed on the opposite side of the injection cylinder due to installation space, etc. However, there are seal plunger devices that seal the molten metal on the opposite side of the injection cylinder, and pressurized plungers that pressurize the molten metal. If a device is provided, it may be difficult to provide an ejector device on this side.

Therefore, when the ejector device is arranged on the injection cylinder unit side, a cylinder unit for driving the Nijidori plate is arranged between the rods that guide the ejector plate, and the injection cylinder unit, Since the rod is provided, it is difficult to provide a space for the ejector plate driving cylinder, and to avoid this problem, the casting machine has to be increased in size.

Furthermore, since the rod and the cylinder unit are provided separately, the structure becomes complicated, and furthermore, the number of members such as means for supporting the cylinder unit increases.

The inventors of the present invention have devised the present invention in order to improve the conventional inconveniences as described above. A product extrusion device for a casting machine that allows the cylinder unit for the ejector plate to be installed without having to consider the situation, increases the degree of freedom in arranging the injection cylinder unit, and allows for a simpler and more compact structure. is to provide.

Next, a preferred embodiment of the present invention will be described according to the accompanying drawings.

Explain in detail.

Figure 1 is a half-cut front view of the casting machine, Figure 2 is a cross-sectional view taken along the line 2-2 in Figure 1, Figure 3 is an enlarged front view of the main part, and Figure 4 is a cross-sectional view taken along the line 4-4 in Figure 3. It is a diagram.

A lower platen 2 of a casting machine 1 is supported on a base 3 via a support frame 4, and a lower mechanism is accommodated through a pit 5 provided on the base 3.

Diapers 6 are installed vertically at the four corners of the lower platen 2.
An upper platen 7 is supported at the upper end of the diver 6.

A mold clamping plate 8 is attached to the downwardly extending end of the lower platen 2 of the dieper 6 .

An upper mold 9 is attached to the lower surface of the upper platen 7, and a lower mold 10 is attached to the upper surface of the lower platen 2, and the mold is clamped and opened by moving the upper platen 7 up and down.

Four pillars 11 are hung down from the inner lower surface of the dieper 6 of the lower platen 2, and an injection cylinder plate 12 is connected to the lower end of the pillars 11, to which the injection cylinder is connected. The cylinder 14 of the unit 13 is fixedly installed vertically, and the rod 15 is vertically extended above the cylinder 14.
A plunger 16 is provided at the upper end.

An ejector plate 17 is horizontally installed in the middle part of the pillars 11 so as to be movable up and down, and the ejector plate 17 is attached to a pair diagonally of the four pillars 11, that is, to two pillars. The plate 17 is fitted through the bearing 18, and the plate 17 is ensured to move up and down smoothly.

The other diagonal column 11-1 of the ejector plate 17
．． A cylinder 19 is provided hanging down and protruding from the part 11-1, so that the cylinders 19, 19 surround the support 11-1゜11-1, while the part surrounded by the cylinder 19 of the support 11-1゜11-1 A piston 20 is fixed to the cylinder 19, and the piston 20 is slidably fitted into the cylinder 19, thereby forming an ejector cylinder unit 21.

The rod 15 of the injection cylinder unit 13 passes vertically through a through hole 17a provided vertically in the center of the ejector plate 17, and the rod 15 including the plunger 16 fits into the through hole 2a formed in the center of the lower platen 2.

Four ejector rods 22 are vertically installed on the ejector plate 17 so as to surround the rod 15, and the rods 22 are connected to through holes 2b vertically provided in the lower platen 2.
The extrusion plate 2 is disposed on the lower platen 2 by passing through the extrusion plate 2 vertically.
Connect to the four corners of the bottom of 3.

Extrusion pins 24 are provided on the extrusion plate 23, and the pins 24 extend vertically and face the bottom of the recess 10a constituting the cavity when the lower mold 10 is in a clamped state.

In the above, the dieper 6 is moved up and down with respect to the lower platen 2 by the mold clamping cylinder unit 25 interposed between the lower platen 2 and the grinding plate 8, and the upper platen 7 supports the upper die 9 attached to the upper end of the dieper 6. The upper and lower molds 9, 1
0 mold clamping and mold opening.

As shown in FIGS. 1 and 3, the upper platen 7 is raised, the upper and lower molds 9 and 10 are opened, the ejector pin 24 is raised, and the cast product on the lower mold 10 is pushed up and discharged.

Its operation is as follows, as shown in Fig. 3, the extrusion plate 23
At the lower limit position, the piston 20 attached to the support column 11-1 is at the upper limit position within the cylinder 19.

When high-pressure working fluid such as pressurized oil is supplied onto the piston 20 in the cylinder 19, the cylinder 19 slides upward around the support column 11-1 since the piston 20 is fixed, and the ejector plate 17 integrated with the cylinder 19 moves upward. The other column 11 then guides the upward movement of the plate 17 via the bearing 18.

The upward motion of the plate 17 is transmitted to the extrusion plate 23 via the rods 22, and the plate 23 rises, and the pins 24 set up on it also rise, pushing the cast product on the lower mold 10. Push up with pin 24 and dispense.

The casting is thus extruded.

In the example shown above, two ejector cylinder units are provided diagonally, but the number may be one, or may be provided on all four pillars and their fitting portions.

As is clear from the above, according to the present invention, the ejector cylinder unit is provided around the column of the ejector plate, so it does not get in the way of the injection cylinder unit and is advantageous in terms of space, giving consideration to the injection cylinder unit. It can be installed without needing to be attached to the support, making it more compact, and since it is installed around the support, no separate mounting means is required, resulting in a simple structure.Furthermore, since it is installed around the support, it also functions as a guide. It has many advantages such as smooth operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Figure 1 is a half-cut front view of the entire casting machine, Figure 2 is a sectional view taken along the line 2-2 in Figure 1, and Figure 3 is an enlarged front view of the main part. Figure 4 is Figure 3 4-4
FIG. In the drawing, 2 is a platen, 11 is a column, 17 is an ejector plate, 19 is a cylinder, 20 is a piston, and 21 is a cylinder unit.

Claims (1)

[Scope of utility model registration request] In a product extrusion device for a casting machine, the product extrusion device for a casting machine is provided with an ejector plate fitted so as to slide with a cylinder device on a support provided on a platen, etc., and an injection cylinder unit for driving an injection plunger on the side of the ejector plate. A product extrusion device for a casting machine, characterized in that the ejector plate is provided with a piston portion, the ejector plate is provided with a cylinder that fits with the piston portion, and the ejector plate is driven by a cylinder unit consisting of the cylinder and the piston portion. .