KR20040101825A - A core setting device of low pressure casting mould - Google Patents

Abstract

PURPOSE: To provide a core setting device of low pressure casting mold for stably installing the cores and improving operation safety by automatically installing various cores at certain positions on a lower mold of casting mold used in the lower pressure casting process. CONSTITUTION: The core setting device of low pressure casting mold(101) comprises rails(105) laterally arranged on an upper part of a lower mold(103) on a lower pressure casting machine; a base frame(111) movably installed on the rails through rollers(109) driven by a driving motor(107); a stopper means(117) mounted on one side of a lower part on the base frame to fix the base frame in the stopped state at certain positions of the rails; a lifting and lowering unit mounted downward on the base frame to operate lifting and lowering of a guide block(129) by hydraulic pressure; and a clamping unit mounted on one side of a lower part of the lifting and lowering unit to load the core into the lower mold by clamping a core(100).

Description

Core setting device of low pressure casting mold {A CORE SETTING DEVICE OF LOW PRESSURE CASTING MOULD}

The present invention relates to a core setting device of a low pressure casting die, and more particularly, a core setting device of a low pressure casting die for automatically installing various cores installed on a lower mold of a casting die used in a low pressure casting method or the like. It is about.

In general, the low pressure casting method is a casting method in which a molten metal is pressed into a mold installed at an upper portion by applying pressure using compressed air or an inert gas to a molten metal surface in a closed furnace, as shown in FIG. 4. The production process of the used aluminum cylinder head, first melt the aluminum ingot (Al ingot) in the melting furnace to make a molten metal 1, this molten metal (1) as shown in Figure 2, the casting machine (7) equipped with a heater (3) To feed.

Then, in the core insertion process, the water jacket or oil passage core 9 of the cylinder head is set on the lower mold 11, which is a lower mold, and the intake air is exhausted into the intake and exhaust combustion chambers. The pot and the exhaust port are set in the lower mold 11.

Next, the upper mold 15 is combined with the lower mold 11 to inject the molten metal 1 through the spout 5 and cooled.

In this manner, after molding, the upper mold 15 and the lower mold 11 are separated, and after the product is taken out, the cylinder head 10 product is cooled and transferred to the machining process.

Here, in the core inserting step, the lower mold 11 is provided with a water jacket of the cylinder head or a core 9 for forming an oil passage. In the related art, as shown in FIG. 3, the operator directly inserts one core 9 into the lower mold 11 and sets it. The core 9 is a molten aluminum alloy as a hot formed body of sand and resin. In order to withstand the pressure of, it is necessary to pay attention to its handling since it must have high decay decayability in the process of casting after casting.

In particular, the core 9 is to be directly set by the operator on the lower mold 11, the temperature of the lower mold 11 is about 450 ℃ or more at a high temperature of the operator during the work, there are a lot of difficulties such as burns often It implies

Therefore, the present invention was created to solve the above problems, the object of the present invention is to automatically install a variety of cores in a predetermined position on the lower mold of the casting die used in the low pressure casting method, such as a stable installation and It is to provide a core setting device of a die for low pressure casting which improves work safety.

1 is a configuration diagram of a core setting apparatus of a low pressure casting mold according to an embodiment of the present invention.

2 is a perspective view of a core installed on a lower mold by a core setting device of a die for low pressure casting according to an embodiment of the present invention.

3 is a view showing a core setting operation in a conventional low-pressure casting mold.

4 is a schematic flowchart illustrating a production process of a material through a general low pressure casting method.

The core setting apparatus of the low pressure casting die for achieving the above object is a rail disposed in the transverse direction on top of the lower mold on the low pressure casting machine; A base frame movably installed through a roller driven by a driving motor on the rail; A stopper means mounted on one side of the lower portion of the base frame to fix the base frame to a stationary state at a predetermined position of the rail; A lifting unit mounted downwardly on the base frame to move the guide block up and down by hydraulic pressure; A clamping unit mounted on one lower side of the elevating unit and clamping a core to load the lower mold;

The stopper means comprises a stopper cylinder for mounting a bracket having a pinhole at a predetermined position of the rail, the operation pin is inserted or removed with respect to the pinhole of the bracket to fix the base frame on the rail,

The elevating unit may include an elevating cylinder mounted downwardly at a central side of the base frame; A guide beam mounted downward on the base frame toward one side of the elevating cylinder; One side is connected to the guide beam is guided in the vertical direction, the other side is characterized in that it is made of a guide block which is connected to the end of the operation rod of the lifting cylinder to receive the vertical operating force,

The clamping unit may include a clamping cylinder fixedly mounted downwardly under the guide block; It is characterized by consisting of a clamper for clamping the core to both sides by moving back and forth by the operation of the clamping cylinder.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a core setting device of a low pressure casting mold according to an embodiment of the present invention, Figure 2 is a perspective view of a core installed on the lower mold by the core setting device of a low pressure casting mold according to an embodiment of the present invention. As a configuration of the core setting device of the low-pressure casting die according to the present invention, first, the rail 105 is disposed in the transverse direction on the lower die 103 on the low-pressure casting machine 101, and the drive is performed on the rail 105. The base frame 111 is provided to be movable through the roller 109 driven by the motor 107.

The lower one side of the base frame 111 is a stopper means for fixing the base frame 111 to a fixed position with respect to a predetermined position of the rail 105, the pinhole corresponding to the predetermined position of the rail 105 A bracket 115 having a 113 is mounted, and an operation pin 119 of the stopper cylinder 117 is inserted into or detached from the pinhole 113 of the bracket 115 to fix or move the base frame 111. It will work as possible.

In addition, a lifting unit for mounting and lowering the guide block 129 by hydraulic pressure is mounted on the base frame 111, and the lifting unit is lowered to the center one side of the base frame 111 to raise and lower the cylinder 121. ) Is mounted, and the guide beam 127 is mounted downward through the upper and lower auxiliary frames 123 and 125 in a direction perpendicular to the base frame 111 to one side of the elevating cylinder 121. The guide block 129 is connected to the guide beam 127 through one side thereof and guided in an up and down direction. On the other side of the guide block 129, an end of the operation rod 131 of the elevating cylinder 121 and Connected and configured to receive up and down actuation forces

In addition, a lower side of the guide block 129 of the elevating unit is mounted to the clamping unit for clamping the core 100 to the lower die 103, the clamping unit is lowered below the guide block 129 Thus, the clamping cylinder 133 is fixedly mounted, and the clamper 135 is provided to clamp back and forth by the operation of the clamping cylinder 133 to clamp the core 100 to both sides.

Therefore, the operation of setting the core 100 on the upper portion of the lower die 103 through the core setting device of the low-pressure casting die having the above-described configuration, first, the core to be installed on the clamper 135 of the clamping cylinder 133 ( In the state of clamping 100, the roller 109 is rotated by the driving motor 107 so that the base frame 111 is moved along the rail 105 to correspond to the upper portion of the lower mold 103. do.

Next, by inserting the operation pin 119 of the stopper cylinder 117 forward with respect to the pinhole 113 formed on one side bracket 115 of the rail 105, the base frame 111 on the rail 105 ) Is fixed at that position once.

Thereafter, when the driving block 131 of the elevating cylinder 121 is driven forward to lower the guide block 129 through the guide beam 127, the lower portion 121 of the guide block 129 is mounted. After the core 100 on the clamper 135 is inserted into the upper portion of the lower mold 103 and positioned, the clamping force of the clamping cylinder 133 is released to the lower mold 103 as shown in FIG. 2. The core 100 will be installed.

As such, when the core 100 is installed in the lower mold 103, the elevating cylinder 121 is driven backward to remove the clamper 135 from the lower mold 103, thereby removing the clamper 135 from the lower mold 103. After the automatic installation of the core 100 is completed, the upper die 140 is molded into the lower die 103 so that the molten metal 150 is injected through the pouring hole 141 to achieve a low pressure casting operation.

As described above, according to the core setting apparatus of the low pressure casting die according to the present invention, the core is automatically placed at a predetermined position through a core jig mounted at the tip of the cylinder rod on the lower die of the casting die used in the low pressure casting method or the like. By providing it, there exists an effect which prevents deformation of a core and improves safety of core installation work at high temperature.

Claims (4)

A rail disposed transversely to the upper portion of the lower mold on the low pressure casting machine; A base frame movably installed through a roller driven by a driving motor on the rail; A stopper means mounted on one side of the lower portion of the base frame to fix the base frame to a stationary state at a predetermined position of the rail; A lifting unit mounted downwardly on the base frame to move the guide block up and down by hydraulic pressure; A clamping unit mounted on one lower side of the elevating unit to clamp the core and to load the lower die; Core setting device of the low-pressure casting mold comprising a. The method according to claim 1, wherein the stopper means A core of a low pressure casting mold, comprising: a bracket having a pin hole at a predetermined position of the rail; and a stopper cylinder configured to fix the base frame on the rail by inserting or detaching an operation pin with respect to the pin hole of the bracket. Setting device. The method of claim 1, wherein the elevating unit A lifting cylinder mounted downwardly at a central side of the base frame; A guide beam mounted downward on the base frame toward one side of the elevating cylinder; A guide block connected to one side of the guide beam and guided in a vertical direction, and on the other side of the guide beam, connected to a tip of an operating rod of the lifting cylinder to receive a vertical operating force; Core setting device of a low-pressure casting die, characterized in that consisting of. The method of claim 1, wherein the clamping unit A clamping cylinder fixedly mounted downward in the lower portion of the guide block; A clamper which clamps the core to both sides by moving back and forth by the operation of the clamping cylinder; Core setting device of a low-pressure casting mold, characterized in that consisting of.