Material injection device of die casting machine
A die-casting machine and barrel technology, which is applied in the field of die-casting machine injection devices, can solve the problems of difficulty in controlling the height of molten metal, long die-casting cycle, and low production efficiency.
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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 plunger head 21 are relatively stable relative to the plunger rod. The structure of the central point in the length direction of 20 is symmetrical, that is, the structure of the second plunger head 21 ′ is consistent with the structure of the plunger head 21. This arrangement is beneficial to ensure that the plunger operates in the barrel 10. At the same time, the friction 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 accur...
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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