The present invention discloses a 3D food printer, which comprises a large hopper in a print head with a cooling system, so as to store and supply a large amount of a food material and print reliably at a high ambient temperature, and an automatic conveying system for printed products, so as to auto
The present invention discloses a 3D food printer, which comprises a large hopper in a print head with a cooling system, so as to store and supply a large amount of a food material and print reliably at a high ambient temperature, and an automatic conveying system for printed products, so as to automatically output the food product after printing it, and then proceed with the next one. These features make the printer more effective, easier to operate, and in line with the requirements of food hygiene. The technical solution includes: the 3D food printer comprising a print head for extruding a food material; a cooling system for keeping the food material at a low temperature at which the food material does not melt or agglomerate; a conveying system for automatically outputting a printed food product; a frame for supporting the entire 3D food printer; a drive system for driving the 3D food printer to move in the X-, Y- and Z-directions; and a control system for controlling the operation of the entire 3D food printer.
대표청구항▼
1. A 3D food printer, characterized by comprising: a print head for extruding a food material;a cooling system for keeping the food material at a low temperature at which the food material does not melt or agglomerate;a conveying system for automatically outputting a printed food product;a frame for
1. A 3D food printer, characterized by comprising: a print head for extruding a food material;a cooling system for keeping the food material at a low temperature at which the food material does not melt or agglomerate;a conveying system for automatically outputting a printed food product;a frame for supporting the entire 3D food printer;a drive system for driving the 3D food printer to move in the X-, Y- and Z-directions; anda control system for controlling the operation of the entire 3D food printer. 2. The 3D food printer according to claim 1, characterized in that said print head comprises a first stepper motor, a bevel gear pair, a transmission shaft, a screw, a hopper, a material barrel, a material cover, an electric heating jacket, a cross-shaped plate, a blade, a water jacket and a nozzle, wherein: for said first stepper motor is horizontally installed on a side of the hopper, an output shaft of the first stepper motor is connected to a small bevel gear in the bevel gear pair, and the base of the first stepper motor is connected to a side of the hopper, for driving the screw;for said bevel gear pair comprises a small bevel gear and a large bevel gear, the small bevel gear being engaged with the large bevel gear, and the large bevel gear being fixed to an upper end of the transmission shaft, for transferring the motion of the first stepper motor;for said screw, an upper end of the screw is connected to the transmission shaft, a lower end of the screw is connected to the nozzle, and the outer diameter of the screw is fitted with an inner hole of the material barrel, for conveying and extruding the food material;for said hopper, an upper end of the hopper is fitted with the material cover, a lower end of the hopper is connected to the material barrel, and a side of the hopper is connected to a base of the first stepper motor, for storing the food material;for said material barrel, an upper end of the material barrel is connected to the hopper, a lower end of the material barrel is connected to the electric heating jacket, and a middle part of the material barrel is connected to a Z-direction driving mechanism of the drive system, for guiding the screw and transferring the Z-directional motion;for said material cover, a lower surface of the material cover is fitted with the upper end of the hopper, for closing an upper charging opening of the hopper;for said electric heating jacket comprises an electrical heating rod and a thermocouple, an upper end of the electric heating jacket is connected to the material barrel, and an inner hole of the electric heating jacket is fitted with the nozzle, for heating the food material in the nozzle;for said cross-shaped plate, an outer edge of the cross-shaped plate is connected to an inner wall of the hopper, and an inner hole of the cross-shaped plate is fitted with the transmission shaft by means of a bearing therein, for locating the transmission shaft;for said blade, an inner hole of the blade is connected to the transmission shaft, for stirring the food material in the hopper;for said water jacket, an inner wall of the water jacket is fitted with the outer wall of the hopper, cooling water from the cooling system is circulating in an internal groove in the water jacket, for lowering the temperature of the food material in the hopper; andfor said nozzle, an upper end of the nozzle is connected to the screw, an outer edge of the nozzle is fitted with the inner hole of the electric heating jacket, for transforming the food material into a molten filament and extruding the material onto a cling film of a conveying system therebelow. 3. The 3D food printer according to claim 1, characterized in that the first stepper motor in said print head drives the vertically installed screw by means of the engaged bevel gear pair, so as to prevent the first stepper motor from being perpendicular to the hopper and thus blocking the channel for adding the food material and reducing the storage capacity of the hopper. 4. The 3D food printer according to claim 3, characterized in that the hopper of said print head is cooled by a cooling system comprising a water pump, a cold water tank, a cooling-water machine and water pipes, wherein: for said water pump, an inlet of the water pump is connected to the cold water tank via the water pipe, and an outlet of the water pump is connected to the cooling-water machine via the water pipe, so that the water in the cold water tank is cooled by the cooling-water machine and flows into the water jacket of the print head;for said cold water tank, an outlet of the cold water tank is connected to the water pump via the water pipe, an inlet of the cold water tank is connected to the water jacket via the water pipe, and the thermocouple is installed inside the cold water tank, for storing cooling water;for said cooling-water machine, an inlet of the cooling-water machine is connected to the water pump via the water pipe, an outlet of the cooling-water machine is connected to the water jacket via the water pipe, for keeping the food material in the hopper at a low temperature; andsaid water pipes are used for the communication between the water pump, the cold water tank, the cooling-water machine and the water jacket. 5. The 3D food printer according to claim 1, characterized in that said conveying system comprises a second stepper motor, a take-up roll, a cling film roll, supports, a tray, a substrate and a platform, wherein: for said second stepper motor, an output shaft of the second stepper motor is connected to a spindle of the take-up roll, and a bed of the second stepper motor is connected to the platform, for driving the take-up roll;for said take-up roll, the two end faces of the spindle of the take-up roll are supported on the platform by the supports, an end socket of the spindle is connected to an output shaft of the second stepper motor, and an outer edge of the take-up roll is wound by a cling film pulled out of the cling film roll, for outputting printed food products;for said cling film roll, two end faces of the spindle of the cling film roll are supported on the platform by the supports, and the cling film winding on the roll serves as a base for printing the food product;for said supports, an upper end of one of the supports is fitted with the spindle of the cling film roll for supporting the cling film roll, and an upper end of the other support is fitted with the spindle of the take-up roll for supporting the take-up roll, and lower ends of said two supports are connected to the platform for fixing the supports;for said tray is disposed on the platform and on the right side of the take-up roll for receiving the printed food product;for said substrate, an upper end face of the substrate is tightly attached to the cling film, and a lower end face of the substrate is connected to the platform, for supporting the printed food product; andfor said platform, an upper end face of the platform is separately connected to lower ends of the said two supports and a lower end face of the substrate for supporting the conveying system, and said platform is further connected to the drive system for moving in X-direction and Y-direction relative to the frame. 6. The 3D food printer according to claim 5, characterized in that said conveying system actuates the take-up roll by the second stepper motor, drives the cling film roll, and pulls the cling film, so that the printed food product is automatically outputted to the tray, so as to continuously print food product without the need to manually remove the product. 7. The 3D food printer according to claim 1, characterized in that, during the printing, said print head only needs to move in the Z-direction layer by layer intermittently, and the X- and Y-directional motions required for printing are achieved by said conveying system. 8. The 3D food printer according to claim 1, characterized in that said frame comprises a casing and a bed, the casing being constituted by an aluminium profile and an acrylic board, so that said print head and said conveying system of the printer are resident in an isolated dust-free environment, and said bed being used for supporting the entire 3D food printer. 9. The 3D food printer according to claim 1, characterized in that said drive system comprises stepper motors for driving in X-, Y- and Z-directions and corresponding transmission devices, for achieving the X-, Y- and Z-directional motions; and said control system consists of a computer numerical control system, for controlling the operation of the entire 3D food printer. 10. The 3D food printer according to claim 1, characterized in that said food is chocolate.
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