Multi-material low-temperature constant-pressure anti-blocking food 3D printer

Abstract

A multi-material low-temperature constant-pressure anti-blocking food 3D printer comprises a frame, a three-way adjusting mechanism, a workbench, a printing head, a material storage mechanism, a cooling mechanism, a blocked material disposal mechanism, a waste recovery mechanism and a cleaning mechanism. The three-way adjusting mechanism is arranged on the frame; the printing head is arranged on the three-way adjusting mechanism; the workbench is arranged at the bottom of the frame. The storage mechanism is arranged at the top of the frame and is connected with the printing head through a feeding pipe; the cooling mechanism is connected with the printing head; the material blocking treatment mechanism is connected with the printing head; the waste recovery mechanism is connected with the workbench; and the cleaning mechanism is connected with the storage mechanism. According to the multi-material low-temperature constant-pressure anti-blocking food 3D printer, liquid nitrogen cooling is adopted in the cooling mechanism, the cooling rate can be increased, the food material forming precision can be improved, the food material printing quality can be improved, when a material blocking fault occurs, ultrasonic vibration automatic dredging and waste recycling can be achieved, the food material pollution risk is reduced, and the production efficiency is improved. And industrial application of the food 3D printer is promoted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to 3D printer technical field, especially, relate to a kind of low temperature constant pressure anti-blocking food 3D printer of multiple materials. BACKGROUND

[0002] With the continuous development of 3D printing technology, printing materials are also more and more rich, and have gradually extended to food field, which can be used in the production of ice cream, chocolate and other cold forming foods.

[0003] However, the traditional food 3D printer usually realizes material solidification and shaping with low-temperature workbench or air cooling mode, but both the low-temperature workbench and the air cooling mode have the disadvantage of slow cooling rate, which leads to generally low precision of food material forming, and the slow cooling rate also easily causes cracks and other defects on the surface of food material due to temperature difference effect, thereby further reducing the printing quality of food material.

[0004] In addition, some food materials have high sensitivity to solidification temperature, which can easily solidify before flowing out of the print head, thereby causing blockage failure, and the current way to handle blockage failure is usually manual dredging, which not only needs a long time to pause the printing program, but also has low work efficiency of manual dredging, and also easily causes the risk of food material pollution, thereby restricting the industrial application of food 3D printer. UTILITY MODEL CONTENTS

[0005] In view of the problems existing in the prior art, the utility model provides a kind of low temperature constant pressure anti-blocking food 3D printer of multiple materials, introduces liquid nitrogen cooling, can improve cooling rate, improve food material forming precision, improve food material printing quality, when blockage failure occurs, automatic dredging and waste recovery can be realized, reduce the risk of food material pollution, promote the industrial application of food 3D printer.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of low temperature constant pressure anti-blocking food 3D printer of multiple materials, including frame, three-way adjusting mechanism, workbench, print head, storage material mechanism, cooling mechanism, blockage disposal mechanism, waste recovery mechanism and cleaning mechanism;The three-way adjusting mechanism is arranged on the frame;The print head is arranged on the three-way adjusting mechanism;The workbench is arranged at the bottom of the frame;The storage material mechanism is arranged at the top of the frame, and the storage material mechanism is connected with the print head by feeding pipe;The cooling mechanism is connected with the print head;The blockage disposal mechanism is connected with the print head;The waste recovery mechanism is connected with the workbench;The cleaning mechanism is connected with the storage material mechanism.

[0007] The storage mechanism comprises a storage tank, a stirring motor and a stirring paddle; the storage tank adopts an inverted conical table type structure, and the storage tank is vertically fixed on the top of the frame; the stirring motor is vertically fixed at the center of the top plate of the storage tank, a plurality of feeding ports are uniformly distributed in the circumferential direction on the top plate of the storage tank on the outer circumferential side of the stirring motor, and a stainless steel filter screen is arranged in each feeding port; the stirring paddle is located in the interior of the storage tank, and the stirring paddle is connected with the motor shaft of the stirring motor; a discharging port is arranged at the center of the bottom plate of the storage tank, and a pneumatic valve is arranged in the discharging port.

[0008] A material collecting adapter funnel is vertically arranged below the discharging port at the center of the bottom plate of the storage tank, and the large-diameter end of the material collecting adapter funnel faces upwards and is in communication with the discharging port at the center of the bottom plate of the storage tank.

[0009] The printing head comprises a discharging needle tube and a buffer cylinder; the buffer cylinder is vertically fixed on the adjusting sliding block of the three-way adjusting mechanism, a constant-pressure screw feeding mechanism is arranged in the interior of the buffer cylinder; the upper end cylinder port of the buffer cylinder is in communication with the small-diameter end of the material collecting adapter funnel through a feeding pipe; and the discharging needle tube is vertically communicated with the lower end cylinder port of the buffer cylinder.

[0010] The cooling mechanism comprises a liquid nitrogen storage tank, a liquid nitrogen conveying pipe and a liquid nitrogen atomizing nozzle; an assembly hole is formed at the center of the liquid nitrogen atomizing nozzle, the liquid nitrogen atomizing nozzle is coaxially fixedly sleeved outside the discharging needle tube through the assembly hole; one end of the liquid nitrogen conveying pipe is in communication with the liquid nitrogen storage tank, and the other end of the liquid nitrogen conveying pipe is in communication with the liquid nitrogen atomizing nozzle.

[0011] The material blocking treatment mechanism comprises an ultrasonic generator, two ultrasonic vibration rings and ultrasonic signal transmission wires; the first ultrasonic vibration ring is fixedly sleeved on the discharging needle tube, the second ultrasonic vibration ring is fixedly sleeved at the joint of the feeding pipe and the material collecting adapter funnel; the two ultrasonic vibration rings are connected with the ultrasonic generator through the ultrasonic signal transmission wires.

[0012] The waste material recycling mechanism comprises a waste material recycling storage tank and a waste material recycling pipe; a waste material recycling hole is arranged at the edge of the workbench; a negative pressure pump is arranged in the interior of the waste material recycling storage tank, one end of the waste material recycling pipe is in communication with the waste material recycling hole at the edge of the workbench, and the other end of the waste material recycling pipe is in communication with the waste material recycling storage tank through the negative pressure pump.

[0013] The cleaning mechanism comprises a clean water storage tank and a clean water conveying pipe; a water spraying hole is arranged on the top plate of the storage tank; a booster pump is arranged in the interior of the clean water storage tank, one end of the clean water conveying pipe is in communication with the clean water storage tank through the booster pump, and the other end of the clean water conveying pipe is in communication with the water spraying hole on the top plate of the storage tank.

[0014] The utility model discloses the following beneficial effects:

[0015] The multi-material low-temperature constant-pressure anti-blocking food 3D printer of the utility model introduces liquid nitrogen cooling, can improve the cooling rate, improve the food material forming precision, improve the food material printing quality, can realize automatic dredging and waste recovery when the material blocking fault occurs, reduce the food material pollution risk, and promote the industrial application of the food 3D printer. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structure schematic view of the multi-material low-temperature constant-pressure anti-blocking food 3D printer of the utility model;

[0017] Fig. 2 It is the structure schematic view of the multi-material low-temperature constant-pressure anti-blocking food 3D printer of the utility model;

[0018] Fig. 3 It is the structure schematic view of the multi-material low-temperature constant-pressure anti-blocking food 3D printer of the utility model;

[0019] Fig. 4 It is the structure schematic view of the multi-material low-temperature constant-pressure anti-blocking food 3D printer of the utility model;

[0020] Fig. 5 It is the structure schematic view of the multi-material low-temperature constant-pressure anti-blocking food 3D printer of the utility model;

[0021] In the drawing, 1 is frame, 2 is three-way adjusting mechanism, 3 is workbench, 4 is feeding pipe, 5 is storage tank, 6 is stirring motor, 7 is stirring paddle, 8 is feeding port, 9 is stainless steel filter screen, 10 is discharging needle tube, 11 is buffer cylinder, 12 is liquid nitrogen storage tank, 13 is liquid nitrogen conveying pipe, 14 is liquid nitrogen atomizing nozzle, 15 is assembly hole, 16 is ultrasonic generator, 17 is ultrasonic signal transmission wire, 18 is waste recovery storage tank, 19 is waste recovery pipe, 20 is waste recovery hole, 21 is clean water storage tank, 22 is clean water conveying pipe, 23 is water spraying hole, 24 is material collecting adapter funnel. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0023] For example, Figs. 1-5As shown, a multi-material low-temperature constant-pressure anti-blocking food 3D printer, comprising a frame 1, a three-way adjusting mechanism 2, a workbench 3, a printing head, a material storage mechanism, a cooling mechanism, a material blocking disposal mechanism, a waste material recycling mechanism and a cleaning mechanism; the three-way adjusting mechanism 2 is arranged on the frame 1; the printing head is arranged on the three-way adjusting mechanism 2; the workbench 3 is arranged at the bottom of the frame 1; the material storage mechanism is arranged at the top of the frame 1, and the material storage mechanism is connected with the printing head through a feeding pipe 4; the cooling mechanism is connected with the printing head; the material blocking disposal mechanism is connected with the printing head; the waste material recycling mechanism is connected with the workbench 3; and the cleaning mechanism is connected with the material storage mechanism.

[0024] The material storage mechanism comprises a material storage tank 5, a stirring motor 6 and a stirring paddle 7; the material storage tank 5 adopts an inverted conical table structure, and is vertically fixed at the top of the frame 1; the stirring motor 6 is vertically fixed at the center of the top plate of the material storage tank 5, and a plurality of feeding ports 8 are uniformly distributed in the circumferential direction on the top plate of the material storage tank 5 outside the periphery of the stirring motor 6, and a stainless steel filter screen 9 is arranged in each feeding port 8; the stirring paddle 7 is located inside the material storage tank 5, and is connected with the motor shaft of the stirring motor 6; a discharging port is arranged at the center of the bottom plate of the material storage tank 5, and a pneumatic valve is arranged in the discharging port.

[0025] A material collecting adapter funnel 24 is vertically arranged below the discharging port at the center of the bottom plate of the material storage tank 5, and the large-diameter end of the material collecting adapter funnel 24 faces upward and is in communication with the discharging port at the center of the bottom plate of the material storage tank 5.

[0026] The printing head comprises a discharging needle tube 10 and a buffer cylinder 11; the buffer cylinder 11 is vertically fixed on the adjusting sliding block of the three-way adjusting mechanism 2, and a constant-pressure spiral feeding mechanism is installed inside the buffer cylinder 11; the upper end cylinder port of the buffer cylinder 11 is in communication with the small-diameter end of the material collecting adapter funnel 24 through the feeding pipe 4; and the discharging needle tube 10 is vertically communicated at the lower end cylinder port of the buffer cylinder 11.

[0027] The cooling mechanism comprises a liquid nitrogen storage tank 12, a liquid nitrogen delivery pipe 13 and a liquid nitrogen atomizing nozzle 14; a mounting hole 15 is formed at the center of the liquid nitrogen atomizing nozzle 14, and the liquid nitrogen atomizing nozzle 14 is coaxially fixed and sleeved outside the discharging needle tube 10 through the mounting hole 15; one end of the liquid nitrogen delivery pipe 13 is in communication with the liquid nitrogen storage tank 12, and the other end of the liquid nitrogen delivery pipe 13 is in communication with the liquid nitrogen atomizing nozzle 14.

[0028] The blocking treatment mechanism comprises an ultrasonic generator 16, ultrasonic vibration rings and an ultrasonic signal transmission wire 17; the number of the ultrasonic vibration rings is two, a first ultrasonic vibration ring is fixedly sleeved on the discharging needle tube 10, and a second ultrasonic vibration ring is fixedly sleeved at the joint of the feeding pipe 4 and the material collecting adapter funnel 24; both the ultrasonic vibration rings are connected with the ultrasonic generator 16 through the ultrasonic signal transmission wire 17.

[0029] The waste recovery mechanism comprises a waste recovery tank 18 and a waste recovery pipe 19; a waste recovery hole 20 is arranged at the edge of the workbench 3; a negative pressure pump is arranged in the waste recovery tank 18, one end of the waste recovery pipe 19 is communicated with the waste recovery hole 20 at the edge of the workbench 3, and the other end of the waste recovery pipe 19 is communicated with the waste recovery tank 18 through the negative pressure pump.

[0030] The cleaning mechanism comprises a clean water tank 21 and a clean water conveying pipe 22; a water spraying hole 23 is arranged on the top plate of the storage tank 5; a booster pump is arranged in the clean water tank 21, one end of the clean water conveying pipe 22 is communicated with the clean water tank 21 through the booster pump, and the other end of the clean water conveying pipe 22 is communicated with the water spraying hole 23 on the top plate of the storage tank 5.

[0031] The following describes the process of one-time use of the utility model in combination with the drawings:

[0032] In the embodiment, the three-way adjusting mechanism 2 adopts a motor-driven three-free-screw-nut-block mechanism, four feeding ports 8 are uniformly distributed on the top plate of the storage tank 5, the target food to be printed is milk chocolate, the food material to be prepared includes chocolate original paste, milk, syrup and drinking water, and then the chocolate original paste, milk, syrup and drinking water are poured into the storage tank 5 from the four feeding ports 8 according to the set proportion.

[0033] When the addition of the food material in the storage tank 5 is completed, the stirring motor 6 is started, and the four kinds of food materials are stirred and mixed uniformly by the stirring paddle 7.

[0034] When the food materials are mixed uniformly, the pneumatic valve at the center discharging port of the bottom plate of the storage tank 5 is opened, and the food materials flow through the material collecting adapter funnel 24 and the feeding pipe 4 in sequence through the discharging port, and then flow into the buffer cylinder 11.

[0035] When the food materials flow into the buffer cylinder 11, the constant-pressure spiral feeding mechanism in the buffer cylinder 11 is started, and the food materials enter the discharging needle tube 10 under the driving action of the constant-pressure spiral feeding mechanism.

[0036] When the food materials enter the discharging needle tube 10, the printing program can be started, the discharging needle tube 10 is driven to move in space by the three-way adjusting mechanism 2, and then the milk chocolate is printed and made on the upper surface of the workbench 3.

[0037] In the process of printing milk chocolate, the liquid nitrogen storage tank 12 is started synchronously, liquid nitrogen enters the liquid nitrogen atomizing nozzle 14 from the liquid nitrogen delivery pipe 13, and finally is sprayed downward from the liquid nitrogen atomizing nozzle 14. After the food material flowing out of the discharge needle pipe 10 reaches the upper surface of the workbench 3, the food material is rapidly cooled and solidified under the low-temperature cooling effect of liquid nitrogen, effectively ensuring the forming precision of milk chocolate, and at the same time, the printing quality of milk chocolate is higher.

[0038] In the process of printing milk chocolate, if a material blocking fault occurs, first, the printing program is paused and the liquid nitrogen storage tank 12 is closed, the pneumatic valve at the center of the bottom plate of the storage tank 5 is closed synchronously, the output of the food material in the storage tank 5 is stopped, and then the discharge needle pipe 10 is moved to be directly above the waste recovery hole 20 at the edge of the workbench 3.

[0039] When the discharge needle pipe 10 is moved to be directly above the waste recovery hole 20 at the edge of the workbench 3, the ultrasonic generator 16 is started, and the discharge needle pipe 10, the feeding pipe 4 and the material collecting adapter funnel 24 are comprehensively subjected to ultrasonic vibration by the ultrasonic vibration ring, so that the solidified food material at the blocking position is crushed, and at the same time, under the driving action of the constant-pressure spiral feeding mechanism in the buffer cylinder 11, the crushed food material is finally discharged from the discharge needle pipe 10 and falls into the waste recovery hole 20.

[0040] In the process of discharging waste from the discharge needle pipe 10 to the waste recovery hole 20, the negative pressure pump in the waste recovery storage tank 18 is started synchronously, and under the action of negative pressure suction, the waste falling into the waste recovery hole 20 is stored in the waste recovery storage tank 18 through the waste recovery pipe 19.

[0041] When there is no more food material discharged from the discharge needle pipe 10, first, the discharge needle pipe 10 is reset to the position where the printing is interrupted, then the pneumatic valve at the center of the bottom plate of the storage tank 5 is opened again, and the output of the food material in the storage tank 5 is restored. When the food material is discharged from the discharge needle pipe 10 again, the liquid nitrogen storage tank 12 is restarted, and the interrupted printing program is resumed, and the printing of milk chocolate is continued until the printing program is completed and the printing of milk chocolate is finished, and the liquid nitrogen storage tank 12 is closed again.

[0042] When all the milk chocolate is finished printing, and the food material in the inside of the storage tank 5 is completely emptied, the discharge needle tube 10 is moved to the waste recovery hole 20 on the side of the workbench 3 again, and the negative pressure pump in the waste recovery tank 18 is started, and then the booster pump in the clean water tank 21 is started, and the cleaning water is sprayed into the storage tank 5 through the clean water delivery pipe 22 from the water spraying hole 23 on the top plate of the storage tank 5, so as to realize the flushing of the inner wall of the storage tank 5 and the stirring paddle 7, and then the cleaning water flows through the material collecting adapter funnel 24, the feeding pipe 4, the buffer cylinder 11 and the discharge needle tube 10 in turn, so as to realize the flow flushing of the above-mentioned components, until the waste water after flushing is discharged into the waste recovery hole 20, and under the action of negative pressure suction, the waste water enters the waste recovery tank 18 through the waste recovery pipe 19 and is stored.

[0043] The scheme in the embodiment is not used to limit the protection scope of the utility model, and equivalent implementation or changes without departing from the utility model are included in the protection scope of the utility model.

Claims

1. A multi-material low-temperature constant-pressure anti-blocking food 3D printer, characterized in that: The application relates to a three-dimensional printing device, which comprises a frame, a three-way adjusting mechanism, a workbench, a printing head, a material storage mechanism, a cooling mechanism, a material blockage disposal mechanism, a waste material recycling mechanism and a cleaning mechanism.

2. The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 1, characterized in that: The material storage mechanism comprises a material storage tank, a stirring motor and stirring blades; the material storage tank adopts an inverted conical table type structure and is vertically fixed on the top of the frame; the stirring motor is vertically fixed at the center of the top plate of the material storage tank; a plurality of feeding ports are uniformly distributed in the circumferential direction on the top plate of the material storage tank outside the stirring motor; a stainless steel filter screen is arranged in each feeding port; the stirring blades are located in the material storage tank and are connected with the motor shaft of the stirring motor; a discharging port is arranged at the center of the bottom plate of the material storage tank and is provided with a pneumatic valve.

3. The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 2, characterized in that: A material collecting adapter funnel is vertically arranged below the discharging port at the center of the bottom plate of the material storage tank, and the large-diameter end of the material collecting adapter funnel faces upwards and is in communication with the discharging port at the center of the bottom plate of the material storage tank.

4. The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 3, characterized in that: The printing head comprises a discharging needle tube and a buffer cylinder; the buffer cylinder is vertically fixed on the adjusting sliding block of the three-way adjusting mechanism, a constant-pressure spiral feeding mechanism is arranged in the buffer cylinder, the upper end cylinder port of the buffer cylinder is in communication with the small-diameter end of the material collecting adapter funnel through a feeding pipe, and the discharging needle tube is vertically connected with the lower end cylinder port of the buffer cylinder.

5. The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 4, characterized in that: The cooling mechanism comprises a liquid nitrogen storage tank, a liquid nitrogen conveying pipe and a liquid nitrogen atomizing nozzle; an assembly hole is arranged at the center of the liquid nitrogen atomizing nozzle, the liquid nitrogen atomizing nozzle is coaxially fixed on the outside of the discharging needle tube through the assembly hole, one end of the liquid nitrogen conveying pipe is in communication with the liquid nitrogen storage tank, and the other end of the liquid nitrogen conveying pipe is in communication with the liquid nitrogen atomizing nozzle.

6. The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 4, characterized in that: The material blockage disposal mechanism comprises an ultrasonic generator, two ultrasonic vibration rings and ultrasonic signal transmission wires; the first ultrasonic vibration ring is fixed on the discharging needle tube, the second ultrasonic vibration ring is fixed on the joint of the feeding pipe and the material collecting adapter funnel, and the two ultrasonic vibration rings are connected with the ultrasonic generator through the ultrasonic signal transmission wires.

7. The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 1, characterized in that: The waste material recycling mechanism comprises a waste material recycling tank and a waste material recycling pipe; a waste material recycling hole is arranged at the edge of the workbench; a negative pressure pump is arranged in the waste material recycling tank, one end of the waste material recycling pipe is in communication with the waste material recycling hole at the edge of the workbench, and the other end of the waste material recycling pipe is in communication with the waste material recycling tank through the negative pressure pump. 8.The multi-material low-temperature constant-pressure anti-blocking food 3D printer according to claim 2, wherein: The cleaning mechanism comprises a clean water storage tank and a clean water conveying pipe; a water spraying hole is arranged on the top plate of the material storage tank; a booster pump is arranged in the clean water storage tank, one end of the clean water conveying pipe is in communication with the clean water storage tank through the booster pump, and the other end of the clean water conveying pipe is in communication with the water spraying hole on the top plate of the material storage tank.

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