Metal forming apparatus

Patent metadata

Field	Value
Publication number	US-2016250682-A1
Application number	US-201415029110-A
Country	US
Kind code	A1
Filing date	Sep 30, 2014
Priority date	Oct 23, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

A metal forming apparatus includes a smelting device, a molding device, an injection device and a vacuumizing device. The smelting device defines a smelting chamber, and includes a rotatable crucible and a heating unit both disposed within the smelting chamber. The molding device defines a molding chamber sealedly communicated with the smelting chamber. The injection device includes a charging barrel assembly sealedly disposed at a joint between the molding device and the smelting device and an injection unit sealedly connected with the smelting device. The vacuumizing device is sealedly connected with the smelting device and the molding device respectively so as to vacuumize the smelting chamber and the molding chamber.

First claim

What is claimed is:

1 . A metal forming apparatus comprising:
a smelting device, which defines a smelting chamber having a feeding port, and comprises a rotatable crucible disposed within the smelting chamber and configured to contain a raw material, and a heating unit disposed in the smelting chamber and configured to heat the raw material in the crucible to obtain a molten raw material; a molding device defining a molding chamber sealedly communicated with the smelting chamber; an injection device comprising:
a charging barrel assembly, which is sealedly disposed at a joint between the molding device and the smelting device, and defines a part extended into the smelting chamber and located below the crucible to receive the molten raw material, and
an injection unit, which is sealedly connected with the smelting device, and defines an end extended through the smelting chamber into the charging barrel assembly so as to inject the molten raw material in the charging barrel assembly into the molding chamber; and
a vacuumizing device sealedly connected with the smelting device and the molding device respectively so as to vacuumize the smelting chamber and the molding chamber.

2 . The metal forming apparatus according to claim 1 , wherein a rear end of the smelting chamber is open and a first flange is disposed at the rear end of the smelting chamber, an adapter flange is disposed at a part of the injection unit located externally of the smelting chamber and sealedly connected with the first flange via a vacuum seal bellow.

3 . The metal forming apparatus according to claim 1 , wherein a front end of the smelting chamber is open and a second flange is disposed at the front end of the smelting chamber, a head plate is disposed at a rear end of the molding device and sealedly connected with the second flange, and the charging barrel assembly is extended through the head plate.

4 . The metal forming apparatus according to claim 1 , wherein the smelting device further comprises a water-cooled electrode assembly connected with the heating unit.

5 . The metal forming apparatus according to claim 4 , wherein the heating unit is fitted over the crucible, a first water passage is defined in the heating unit, the water-cooled electrode assembly has two electrodes, a second water passage is defined in each of the two electrodes, wherein two ends of the first water passage are connected with two second water passages of the two electrodes respectively.

6 . The metal forming apparatus according to claim 5 , wherein the two electrodes are disposed on and penetrates through a side wall of the smelting chamber, the smelting device further comprises a sealing element and a rotation arm, the sealing element is fitted over an end of the electrode located externally of the smelting chamber so as to seal a gap between the electrode and the smelting chamber, and the rotation arm is fixed on the sealing element and configured to drive the sealing element, the two electrodes and the crucible to rotate.

7 . The metal forming apparatus according to claim 1 , wherein the smelting device has an inert gas port communicated with the smelting chamber and configured to inject an inert gas into the smelting chamber.

8 . The metal forming apparatus according to claim 1 , wherein the smelting chamber has a substantial ellipsoid shape.

9 . The metal forming apparatus according to claim 1 , wherein the injecting unit comprises:
an injection rod assembly defining an end extended into the charging barrel assembly; and an injection power device connected with the injection rod assembly and configured to drive the injection rod assembly so as to inject the molten raw material in the charging barrel assembly into the molding device.

10 . The metal forming apparatus according to claim 9 , further comprising a displacement speed monitoring device connected with the injection device and configured to detect operation parameters of the injection device.

11 . The metal forming apparatus according to claim 10 , wherein the injection rod assembly comprises an injection rod and a magnet ring disposed on the injection rod, and the injection rod defines a sliding passage therein, and the displacement speed monitoring device comprises a straight-line displacement sensor extended into the sliding passage.

12 . The metal forming apparatus according to claim 1 , further comprising a feeder connected with the feeding port to feed the raw material into the crucible via the feeding port.

13 . The metal forming apparatus according to claim 12 , wherein the feeder comprises:
an oscillating screen; a weighing conveyer belt connected with the oscillating screen via a transition belt; a lifting conveyer belt defining a lower end connected with the weighting conveyer belt and an upper end communicated with the feeding port; a counter configured to count a number of the raw material on the weighting conveyer belt; a blanking controller connected with the counter and configured to prevent the raw material from being conveyed to the weighting conveyer belt when the counter detects that the number of the raw material on the weighting conveyer belt reaches a predetermined number; a quality sensor configured to detect whether the raw material on the weighting conveyer belt is qualified; and a screening device disposed on the weighting conveyer belt and configured to remove unqualified raw material from the weighting conveyer belt.

14 . The metal forming apparatus according to claim 13 , further comprising a guiding device disposed between the lifting conveyer belt and the feeding port.

15 . The metal forming apparatus according to claim 1 , wherein the vacuumizing device comprises:
a vacuumizing unit; a first connector disposed on the vacuumizing unit and connected with the smelting chamber; and a second connector disposed on the vacuumizing unit and connected with the smelting chamber.

16 . The metal forming apparatus according to claim 15 , wherein the vacuumizing device further comprises a three-way connection defining a first port connected with the vacuumizing unit, a second port connected with the first connector, and a third port connected with the second connector, and two filter screens being disposed in the second port and the third port respectively.

Assignees

• Byd Co Ltd

Inventors

• Gong Qing
• Zhao Shuming
• Wang Yanan
• Chen Qiuhui
• Wang Xiaohua
• Tang Liuping

Classifications

• F27D21/0035

  Devices for monitoring the weight of quantities added to the charge · CPC title

• F27B14/06

  heated electrically, e.g. induction crucible furnaces with or without any other source of heat (F27B14/04 takes precedence) · CPC title

• F27D2007/066

  Vacuum · CPC title

• B22D17/2023

  Nozzles or shot sleeves · CPC title

• F27B2014/002

  Smelting process, e.g. sequences to melt a specific material · CPC title