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A die-casting machine injection device

A die-casting machine and barrel technology, which is applied in the field of die-casting machine injection devices, can solve problems such as low production efficiency, cracks, and easy embedding of air bubbles

Active Publication Date: 2017-12-22
SDT SMART DIECASTING TECH (SUZHOU) CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is to overcome that the barrel of the existing cold die-casting device can only inject the molten metal of a single casting each time, the die-casting cycle is long, the production efficiency is low, and the height of the molten metal in the barrel It is not easy to control, and it is easy to embed air bubbles inside the casting, and it is easy to make the mold made of H13 steel soften or even crack, which will seriously affect its service life. Therefore, a new type of die-casting machine injection device is provided.

Method used

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  • A die-casting machine injection device
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  • A die-casting machine injection device

Examples

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Embodiment 1

[0046] see figure 1 , a die-casting machine injection device, including a barrel 10 for containing molten metal liquid and a plunger 2 that is slidingly sealed in the inner cavity of the barrel 10, and the plunger 2 is pushed by a driving mechanism The molten metal in the barrel 10 is hydraulically injected into the mold cavity; the barrel 10 includes a straight portion 108, and a gooseneck 109 arranged at the discharge end of the straight portion 108, the gooseneck The inner cavity of 109 is inclined upwards and communicates with the mold cavity. The upper wall of the inner cavity of the straight part 108 and the upper wall of the inner cavity of the gooseneck 109 pass through the inclined part arranged at the end of the straight part 108. 1080 transition connection, the lowest point 1081 of the inclined part 1080 is lower than the lowest point 1051 of the outlet 105 of the gooseneck 109, by making the lowest point 1081 of the inclined part 1080 and the outlet 105 of the goos...

Embodiment 2

[0062] This embodiment provides a die-casting machine injection device, which is a further improvement on the basis of Embodiment 1. In this embodiment, in order to facilitate the installation of the double-sealed plunger of the present invention into the barrel 10, and To ensure that the plunger has a relatively stable operating state in the barrel 10, on the basis of the first embodiment above, the second plunger head 21' and the first plunger head 21 are relatively The structure of the central point in the length direction of the plug rod 20 is symmetrical, that is, the structure of the second plunger head 21' is consistent with the structure of the first plunger head 21. This arrangement is beneficial to ensure that the plunger is in the When the barrel 10 is in operation, the frictional force between the sealing parts at both ends and the inner wall of the barrel is basically equal, and can reciprocate relatively smoothly along the axis direction, thereby ensuring accurate...

Embodiment 3

[0065] This embodiment provides an injection device for a die-casting machine, which is a modification based on Embodiment 1 or 2. In this embodiment, see Figure 5 , Figure 6 A heating device 102 is provided on the outside of the straight portion 108 and the gooseneck 109, and the heating device 102 is a thermal fluid heater, and an insulating sleeve 110 for heat preservation is provided on the outside of the heating device 102. The heating device 102 can properly heat the molten metal in the barrel 10 to keep it at the injection temperature, thereby improving the casting quality and production efficiency. On the one hand, the heat insulating sleeve 110 can prevent the inner wall of the high-temperature barrel and the heating device from heat exchange with the outside air to reduce the temperature, and at the same time, it can effectively prevent the operator from accidentally touching the outer wall of the heating device to cause burns, thereby improving the safety of the e...

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Abstract

The invention discloses a material injection device of a die casting machine. The material injection device comprise a material cylinder and a plunger, wherein the material cylinder is used for containing molten metal liquid, the plunger is arranged in an inner cavity of the material cylinder, the material cylinder comprises a flat part and a gooseneck part which are in transition connection by an inclining part, the lowest point of the inclining part is lower than the lowest point of a material outlet of the gooseneck part, the plunger comprises a plunger head and a second plunger head which are connected by a plunger rod, a non-pressure chamber for containing the molten metal liquid is formed among the plunger head, the second plunger head, the plunger rod and the flat part, a pressure chamber for containing to-be-injected molten metal liquid is formed among the plunger head, the gooseneck part and the flat part, and a one-way flowing device is arranged between the non-pressure chamber and the pressure chamber, is sealed during material injection, and is opened in the plunger resetting process. The material injection device of the die casting machine has the advantages that the die casting cycle is short, the production efficiency is high, the qualified rate of products is higher, the heating temperature of the metal liquid is lowered, and the service life of a die and other parts is prolonged.

Description

technical field [0001] The invention relates to an injection device of a die-casting machine, which belongs to the technical field of die-casting equipment. Background technique [0002] Die casting is to inject a molten alloy into the barrel, and then inject a certain amount of molten alloy into the cavity through the plunger arranged in the barrel, and form a casting after cooling and molding. [0003] The barrel in traditional die-casting equipment can only be filled with a certain amount of molten metal according to the size of the casting. After the injection is completed, the plunger is reset to the initial position, and a certain amount of molten metal is added to the barrel again for the next die-casting. Due to the high temperature of the molten metal, it is very dangerous to the operator. Generally, tools such as a spoon are used to add the molten metal into the pressure chamber of the barrel, so it is difficult to ensure that the molten metal in the barrel The en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/30B22D17/08
CPCB22D17/2015B22D17/2023B22D17/203B22D17/2038
Inventor 捷卡姆.查马特
Owner SDT SMART DIECASTING TECH (SUZHOU) CO
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