US 11,052,588 B2
Electrically-driven rotor iron core magnetic steel chamber dispensing device
Hung-Neng Lai, New Taipei (TW); Mu-Ching Chang, New Taipei (TW); and Chih-Hung Hsu, New Taipei (TW)
Assigned to GALLANT MICRO. MACHINING CO., LTD., New Taipei (TW)
Filed by GALLANT MICRO. MACHINING CO., LTD., New Taipei (TW)
Filed on Jul. 31, 2019, as Appl. No. 16/527,141.
Claims priority of application No. 201910274491.1 (CN), filed on Apr. 8, 2019.
Prior Publication US 2020/0316834 A1, Oct. 8, 2020
Int. Cl. B29C 45/14 (2006.01); B29C 45/26 (2006.01); B29L 31/00 (2006.01)
CPC B29C 45/26 (2013.01) [B29C 45/14639 (2013.01); B29L 2031/7498 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electrically-driven rotor iron core magnetic steel chamber dispensing device, comprising an upper mold and a lower mold, characterized in that: the lower mold comprises dispensing units each corresponding in position to one or two magnetic steel chambers and arranged in a circumferential direction of the electrically-driven rotor relative to the magnetic steel chambers, with dispensing directions being upward;
the dispensing units each comprise a dispensing channel, a dispensing head, a plunger barrel, a plunger and a stop-injection opening pin, wherein the dispensing channel is disposed above the dispensing head and in communication with the dispensing head, the dispensing head is disposed at the top of the plunger barrel and in communication with the plunger barrel, the plunger is disposed in the plunger barrel to slide upward and downward relative to the plunger barrel, the stop-injection opening pin comprises a pin body, the pin body is disposed vertically, arranged beside the plunger barrel, and fixed to the lower mold from inside, a pin head portion is disposed at a top of the pin body, a barb is disposed between the pin head portion and the pin body, the pin head portion protrudes into the dispensing channel of the dispensing head such that molten plastic in the dispensing channel can enter the barb, wherein, when cured, the plastic forms a reliable anchorage between the waste plastic and the stop-injection opening pin;
the dispensing units in operation inject plastic into the magnetic steel chamber, wherein, after a residue of the waste plastic in the dispensing channel has cured, the pin head portion protruding into the dispensing channel and the waste plastic in the dispensing channel are engaged with each other by the barb and thus fixed together, wherein, upon separation of the upper mold and the lower mold, the lower mold causes the stop-injection opening pin to move away from the upper mold such that the stop-injection opening pin causes the waste plastic to move away from the upper mold, allowing the waste plastic to separate from the plastic injected into the magnetic steel chamber;
wherein the lower mold further comprises a waste plastic plate, a stop-injection opening pressing plate, a waste plastic driving plate and a release post, the waste plastic plate is stacked on the stop-injection opening pressing plate, the waste plastic driving plate is disposed at an end of the waste plastic plate and corresponds in position to the waste plastic plate, a top acting end of the release post acts on the waste plastic driving plate to prevent the waste plastic plate from moving downward together with the lower mold, thereby allowing the waste plastic plate to move away from the stop-injection opening pressing plate.