Infinitely-variable-speed ultrasonic microdroplet jetting additive manufacturing device and method for multiple materials

Abstract

The invention relates to an infinitely-variable-speed ultrasonic microdroplet jetting additive manufacturing device and method for multiple materials, and belongs to the field of additive manufacturing. A delta sport substrate device is fixed inside a rack and located below a top plate of the rack. A focused ultrasound system is fixed inside the rack and located above a bottom plate of the rack. A material pool device is located above the focused ultrasound system and fixed to the rack. Feeding devices are fixed to supporting posts of the rack. According to the infinitely-variable-speed ultrasonic microdroplet jetting additive manufacturing device and method for the multiple materials, the focused ultrasound technique and the additive manufacturing technique are combined, the size of jetted liquid drops is not limited by sprayers which are not needed, sprayer blocking is avoided, and the manufacturing cost is lowered; microdroplets are jetted from bottom to top, satellite droplets are prevented, and the printing precision is improved; mixed additive manufacturing for the multiple materials and additive manufacturing for functionally gradient materials can be achieved; and in the printing process, the microdroplet jetting frequency is adjustable, the microdroplet diameter is adjustable, and infinitely-variable-speed microdroplet jetting additive manufacturing can be achieved.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and particularly relates to a continuously variable speed multi-material ultrasonic droplet jet additive manufacturing device and method, which is used for steplessly variable multi-material ultrasonic droplet jet additive manufacturing. During the jetting process, the jetting speed and The spray droplet diameter can be adjusted, which can realize the additive manufacturing of functionally graded materials. Background technique [0002] The micro-droplet injection additive manufacturing technology is under the control of the computer, according to the designed three-dimensional graphics, the material is sprayed to the bottom plate in the form of fine droplets to form a three-dimensional solid device with real product functions. Compared with traditional additive manufacturing technology, it has the advantages of high forming precision and wide range of applicable raw materials. It has been u...

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Problems solved by technology

[0008] The invention provides a continuously variable speed multi-material ultrasonic droplet injection additive manufacturing device and method, which combines focused ultrasonic technology and additive manufacturing technology to realize stepless variable speed multi-material ultrasonic droplet jet additive manufacturing and solve the current problems The droplet size of the droplet injection additive manufacturing system is limited by the nozzle, and it is easy to block the nozzle. During the injection process, satellite droplets are produced, which cannot realize the additive manufacturing of multi-material functional gradient materials. The injection speed and the injection droplet during the injection process The problem of immutable size

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