Rotary type metal melting direct-writing nozzle device with adjustable bore diameter
A metal melting and nozzle device technology, applied in the field of additive manufacturing, can solve the problems of low nozzle replacement efficiency, easy nozzle blockage, easy leakage of metal liquid, etc.
Pending Publication Date: 2020-07-07
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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Problems solved by technology
The invention effectively solves the problems of easy blockage of nozzles, easy leakage of molten metal, and low replacement efficiency of nozzles with different apertures in the metal melting direct writing forming process, and realizes stable process, low production cost, and short cycle forming
Method used
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[0023] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings. The present invention provides a rotary metal melting direct writing nozzle device with adjustable aperture, comprising the following steps:
[0024] 1. Start the cavity lifting control motor 1-12 to make it in the reverse state, the cavity lifting control reducer 1-13 rotates, drive the cavity lifting connection shaft 1-15 to work, and raise the heating and melting cavity 1-2 to At the highest point, the cavity lifting control motor 1-12 stops working. If the heating and melting cavity 1-2 is at the highest point, it is not necessary to carry out the above operations.
[0025] 2. Start the lifting motor 3-7 of the cleaning mechanism to make it in the forward rotation state, the lifting reducer 3-6 of the cleaning mechanism rotates, and drive the lifting connection shaft 3-4 of the cleaning mechanism to work, and lower the lifting mechanism 3-3 o...
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The invention relates to a rotary type metal melting direct-writing nozzle device with an adjustable bore diameter. The rotary type metal melting direct-writing nozzle device comprises a heating melting lifting system, a nozzle rotary system and a nozzle cleaning system. An on-off plug is adopted to perform on-off control on molten metal liquid, meanwhile, an air pressure on-off mechanism is supplemented by pressurized protective gas in the forming process, and it is ensured that the molten metal liquid stably and continuously flows out in the forming process; the lower end of a heating melting cavity, the upper end of a nozzle, the lower end of the on-off plug are in conical fitting with a contact surface of the heating melting cavity, and the probability of the molten metal liquid beingblocked and leaking in the nozzle is effectively reduced; the device can clean the interior and periphery of the nozzle after forming, and the service life of the nozzle is prolonged; and the device can automatically switch the nozzle of the required bore diameter according to the need, and fastness and efficiency are achieved. The problems that the nozzle is prone to being blocked, the metal liquid is prone to leaking, the replacement efficiency of the nozzles with different bore diameters is low and the like in the metal melting direct-writing forming process are effectively solved, and stable technology, low production cost and short cycle forming are achieved.
Description
technical field [0001] The invention relates to a rotary metal melting direct writing nozzle device with adjustable aperture, which belongs to the technical field of additive manufacturing. Background technique [0002] Metal melting 3D direct writing technology is a technical branch of the metal additive manufacturing system oriented to industrial production. It uses induction heating or resistance heating to heat and melt metal materials. The layers are sprayed, deposited, solidified, combined, and accumulated from bottom to top to form three-dimensional metal parts. Compared with additive manufacturing technologies such as lasers and electron beams, this technology does not require high-energy heat sources, and has advantages in industrial production; compared with droplet injection technology, it uses metal melt to form directly, further reducing costs and improving forming efficiency. [0003] The metal melting direct writing nozzle and the heating and melting cavity a...
Claims
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Login to View More IPC IPC(8): B22F3/115B33Y40/00
CPCB22F3/115B33Y40/00
Inventor 单忠德王永威戎文娟王佳琳
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH