3D food printing pretreatment system and printing device

Abstract

The present invention discloses a 3D food printing pretreatment system and a printing device, which includes a body, a crushing device, an extrusion device, a heating device and a collecting device. The crushing device is used to crush the thawed meat and mix it evenly, the extrusion device is used to extrude the material discharged by the crushing device, the heating device is used to heat the material extruded by the extrusion device, and the collecting device is used to collect the material heated by the heating device. The present invention fully crushes the meat fibers and evenly mixes them with powder and water to form a homogeneous slurry, thereby improving the fluidity and extrusion stability of the material and avoiding blockage or faults caused by uneven particles during the 3D printing process. The present invention heats the extruded material to promote the partial gelation of meat protein and added powder in advance, thereby enhancing the self-supporting property of the material. The printed structure is not easy to collapse, and after heating the material, the microbial load can be effectively reduced, thereby extending the shelf life of the subsequent printed material.

Description

Technical Field

[0001] The present invention belongs to the technical field of food processing, and in particular relates to a 3D food printing pretreatment system and a printing device. Background Art

[0002] In the food processing sector, meat 3D printing technology is a food processing method based on additive manufacturing principles. By stacking edible meat materials layer by layer, it can produce meat products with complex geometries, customized nutritional profiles, or special textures. This technology has broad application prospects in areas such as artificial meat, personalized food, aerospace catering, and medical nutrition.

[0003] In meat 3D printing, raw material pretreatment significantly impacts print quality, extrusion stability, and the final product's texture. Traditional meat 3D printing typically uses ground meat or pureed meat as the printing material. However, due to the uneven fiber structure of meat and the risk of microbial contamination, defects such as blockage, extrusion fracture, and finished product collapse can easily occur during the printing process, impacting print accuracy and product quality. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems existing in the prior art and to provide a 3D food printing pretreatment system and printing device, which can fully crush meat fibers and evenly mix them with powder and water to form a homogeneous slurry, thereby improving the fluidity and extrusion stability of the material and avoiding blockage or faults caused by uneven particles during the 3D printing process. The present invention heats the extruded material with steam to promote the partial gelation of meat protein and added powder in advance, enhance the self-supporting properties of the material, and make the printed structure less likely to collapse. Moreover, after heating the material, the microbial load can be effectively reduced, thereby extending the shelf life of the subsequently printed material. The present invention can ensure food printing accuracy and product quality.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The 3D food printing preprocessing system is characterized in that it includes a body, a crushing device, an extrusion device, a heating device and a collecting device. The crushing device is used to crush the thawed meat and mix it evenly. The extrusion device is used to extrude the material discharged by the crushing device. The heating device is used to heat the material extruded by the extrusion device. The collecting device is used to collect the material heated by the heating device.

[0007] Furthermore, the crushing device includes a driving mechanism, a crushing bin and a crushing piece. The crushing bin is provided with an inner cavity. The crushing bin is provided with a feed port and a discharge port. The feed port and the discharge port are connected to the inner cavity. The crushing piece is provided in the inner cavity. The driving mechanism is connected to the crushing piece. The driving mechanism drives the crushing piece so that the crushing piece crushes and stirs the thawed meat in the inner cavity. The evenly mixed material is discharged from the discharge port into the extrusion device.

[0008] Furthermore, the crushing member includes a crushing shaft and a crushing blade installed on the crushing shaft. The driving mechanism adopts a motor. The motor is provided with a motor shaft, and the motor shaft is connected to the crushing shaft.

[0009] Furthermore, the machine body is provided with an opening, a feed piece is installed at the opening, the feed piece is provided with an input port and a discharge port, the discharge port is connected to the first feed port, and the input port is fixed at the opening.

[0010] Furthermore, the machine body is equipped with a mounting seat, the mounting seat is provided with a fixing plate, the fixing plate is provided with a mounting surface, the mounting surface is fixed to the mounting seat, the motor is provided at one place on the mounting surface, the fixing plate is provided with a through hole, the motor shaft passes through the through hole, the fixing plate is provided with a mounting surface, the mounting surface is arranged parallel to the mounting surface, and the crushing bin is installed at the mounting surface.

[0011] Furthermore, the crushing bin is provided with a mounting opening, the mounting opening is detachably connected to a crushing bin cover, and the crushing bin cover is fixed at two locations on the mounting surface.

[0012] Furthermore, the second mounting surface is provided with a silo pressing piece, which limits the crushing silo and the crushing silo cover.

[0013] Furthermore, the fixing plate 1 is detachably connected to a locking piece 1, and the locking piece 1 fixes the silo pressing plate on the mounting surface 2.

[0014] Furthermore, the mounting seat 1 includes profile 1 and profile 2, profile 1 and profile 2 are fixed to the machine body, the length of profile 2 is greater than the length of profile 1, and the fixing plate 1 is fixed to profile 1 and profile 2, so that the crushing device is set at an angle, and the installation height of the feed port 1 is greater than the installation height of the discharge port 1.

[0015] Furthermore, the mounting seat 1 is provided with a driving mechanism 2, which is connected to a slider, and the slider is fixed with a discharge bin door. The driving mechanism 2 controls the slider to move back and forth linearly, so that the discharge bin door is opened or closed at the discharge port.

[0016] Furthermore, the crushing bin is provided with a guide rail, and a guide groove is formed between the guide rail and the crushing bin. The discharge bin door extends into the guide groove and moves back and forth linearly along the axis direction of the crushing bin.

[0017] Furthermore, the extrusion device includes an extrusion shell, a second motor, an extrusion screw and a mold. The extrusion shell is fixed to the machine body. The extrusion shell is provided with an inner cavity two. The extrusion shell is provided with a second feed port and a second discharge port. The second feed port and the second discharge port are connected to the inner cavity two. The material discharged by the crushing device enters the inner cavity two through the second feed port. The extrusion screw is arranged in the inner cavity two. The extrusion screw is provided with spiral blades. The second motor is provided with a second motor shaft. The second motor shaft is connected to the extrusion screw and controls the rotation of the extrusion screw. The spiral blades transport the material entering the second feed port to the second discharge port. The mold is arranged in the second discharge port. The mold is provided with an extrusion hole. The extrusion screw extrude the material from the extrusion hole.

[0018] Furthermore, the machine body is equipped with a second mounting seat, the second mounting seat is provided with a second fixing plate, and the extrusion device is fixed on the second fixing plate.

[0019] Furthermore, the second fixing plate is provided with a locking block, which limits the extrusion of the shell.

[0020] Furthermore, the second fixing plate is detachably connected to a second locking member, which fixes the locking block to the second fixing plate.

[0021] Furthermore, an auxiliary strip is fixed to the second fixing plate, and the auxiliary strip positions the extrusion device at a set position of the second fixing plate.

[0022] Furthermore, the heating device is connected to a heating pipe, which is installed on the extrusion device. The heating device is a steam generator, which is connected to the heating pipe through a pipeline. The steam generator transports steam and water to the heating pipe through the pipeline. The steam and water in the heating pipe heat the material extruded by the extrusion device.

[0023] Furthermore, the collecting device adopts a wash basin, the wash basin is provided with a third inner cavity, and the top of the wash basin is provided with a collecting port connected with the third inner cavity.

[0024] Furthermore, the machine body is provided with an outlet and a water tank, the water tank is provided with an inner cavity four, the wash basin is supported on the water tank after passing through the outlet, and is arranged above the inner cavity four.

[0025] Furthermore, a wash basin pad is provided in the inner cavity four, and the wash basin is supported on the wash basin pad.

[0026] Furthermore, the wash basin includes an outer frame and an inner frame, the outer frame is provided with a groove, the inner frame is arranged in the groove, the inner cavity is located in the inner frame, the inner frame is provided with a water hole, and the water hole and the inner cavity are connected.

[0027] The printing device is characterized in that the printing device 3D prints the material preprocessed by the 3D food printing preprocessing system.

[0028] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0029] The present invention puts the thawed meat into a crushing device, which crushes the meat at high speed. After a certain period of time, the meat can be crushed evenly. Then the remaining powder and water are added, and the crushed meat is stirred in the crushing device. After stirring for a certain period of time, the materials are mixed evenly. The material falls into the extrusion device due to gravity and centrifugal force, and the extrusion device transports the material and extrude it. The heating device heats the extruded material, and a continuous supply of steam and a small amount of high-temperature water can be used to heat the material. The material and high-temperature water then fall into the collecting device for collection. After the collecting device is full, the empty collecting device is replaced with the full collecting device, and the new collecting device is continuously replaced until no material falls. The present invention combines the extrusion device and the heating device with existing 3D printing technology to produce meat products with complex geometric shapes, customized nutrition or special textures.

[0030] The present invention pre-treats thawed meat before food 3D printing, and the technical effects are as follows.

[0031] 1. Material homogenization and fluidity improvement

[0032] Crushing and mixing uniformity: Through high-speed crushing and uniform stirring steps, the meat fibers are fully crushed and evenly mixed with powder and water to form a homogeneous slurry, which improves the fluidity and extrusion stability of the material and avoids blockage or faults caused by uneven particles during the 3D printing process;

[0033] Eliminate agglomeration: The crushing and stirring process destroys the original fiber structure of the meat, reducing the problem of uneven extrusion caused by fiber agglomeration during printing.

[0034] 2. Optimize material printability

[0035] Viscosity control: By adjusting the ratio of powder to water, the viscosity of the mixed material is more suitable for extrusion 3D printing, which can maintain the shape stability after extrusion without clogging the printer nozzle due to excessive viscosity;

[0036] Thermal gelation pretreatment: Heating can promote the partial gelation of meat protein and added powder in advance, enhance the self-supporting properties of the material, and make the printed structure less likely to collapse.

[0037] 3. Sterilization and shelf life extension

[0038] Heating the material can effectively reduce the microbial load and extend the shelf life of subsequent printed materials.

[0039] 4. Adaptability to continuous production

[0040] The present invention completes the crushing and stirring, extrusion, heating, and material collection operations in a single system, adapting to the needs of industrial continuous production. Furthermore, the present invention allows for collection by replacing the collection device, ensuring a seamless transition between pre-processing and subsequent printing steps, avoiding production interruptions.

[0041] 5. The homogenized material of the present invention can reduce extrusion fluctuations, ensure the bonding strength between 3D printing layers, and improve printing accuracy. At the same time, the automated process reduces the risk of material contamination, and heating achieves sterilization and material modification, improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings:

[0043] Figure 1 This is a schematic structural diagram of the 3D food printing pretreatment system of the present invention;

[0044] Figure 2 Schematic diagram of the structure of the right cover in the present invention;

[0045] Figure 3 This is a schematic diagram of the structure of the present invention when the right cover is removed;

[0046] Figure 4 Schematic diagram of the structure of the front door in the present invention;

[0047] Figure 5 This is a schematic diagram of the structure of the connection between the crushing bin, the crushing bin cover and the discharge bin door in the present invention;

[0048] Figure 6 Schematic diagram of the structure of the crushing bin in the present invention;

[0049] Figure 7 This is a schematic structural diagram of the crushing bin cover in the present invention;

[0050] Figure 8 This is a schematic diagram of the structure of the connection between the slider and the unloading hopper door in the present invention;

[0051] Figure 9 This is a schematic structural diagram of the connection between the feed member and the crushing bin in the present invention;

[0052] Figure 10 Schematic diagram of the structure of the feed member in the present invention;

[0053] Figure 11 This is a schematic structural diagram of the connection between the driving mechanism 1 and the crushing element in the present invention;

[0054] Figure 12 This is a schematic diagram of the structure of the connection between the locking member 1 and the silo pressing piece in the present invention;

[0055] Figure 13This is a schematic diagram of the structure of the connection between the second driving mechanism, the slider and the discharge bin door in the present invention;

[0056] Figure 14 Schematic diagram of the structure of the driving mechanism 2 in the present invention;

[0057] Figure 15 This is a schematic structural diagram of the connection between the extrusion device and the heating tube in the present invention;

[0058] Figure 16 Schematic diagram of the structure of the heating tube in the present invention;

[0059] Figure 17 This is a schematic structural diagram of the connection between the heating device and the heating tube in the present invention;

[0060] Figure 18 Schematic diagram of the structure of the extruded shell in the present invention;

[0061] Figure 19 Schematic diagram of the structure of the mold in the present invention;

[0062] Figure 20 This is a schematic diagram of the structure of the motor 2 connected to the extrusion screw in the present invention;

[0063] Figure 21 This is a schematic structural diagram of the connection between the second locking member and the locking block in the present invention;

[0064] Figure 22 Schematic diagram of the structure of the auxiliary strip in the present invention;

[0065] Figure 23 It is a structural schematic diagram of the water tank in the present invention;

[0066] Figure 24 This is a schematic diagram of the structure of the connection between the sink and the basin pad in the present invention;

[0067] Figure 25 Schematic diagram of the structure of the wash basin in the present invention;

[0068] Figure 26 for Figure 25 A top view of

[0069] Figure 27 for Figure 26 Cross-sectional view along the AA axis;

[0070] Figure 28 This is a schematic diagram of the internal structure of the 3D food printing pretreatment system of the present invention;

[0071] Figure 29 Schematic diagram of the structure of the fixing plate 1 in the present invention;

[0072] Figure 30Schematic diagram of the structure of the printing device of the present invention.

[0073] In the figure, 1-body; 11-front door; 12-right cover; 13-left cover; 14-rear cover; 15-bottom plate; 16-upper cover; 17-extraction port; 18-rear plate; 19-through hole 3; 110-opening; 111-discharge port; 112-body profile;

[0074] 2- Crushing device; 21- Crushing bin; 22- Feeding port 1; 23- Crushing bin cover; 24- Discharging port 1; 25- Discharging bin door; 26- Guide rail; 27- Mounting port; 28- Edge 1; 29- Edge 2; 210- Driving mechanism 2; 2101- Screw motor; 2102- Screw; 211- Mounting plate; 212- Slider; 213- Door push block; 214- Motor 1; 215- Motor shaft 1; 216- Crushing shaft; 217- Crushing blade; 218- Coupling 1; 219- Bin pressing piece; 220- Notch 1; 221- Pressing part; 222- Locking piece 1; 223- Feeding piece; 224- Inlet; 225- Discharge port;

[0075] 3-Extrusion device; 31-Extrusion housing; 32-Motor 2; 33-Extrusion screw; 34-Feed port 2; 35-Mold; 36-Extrusion hole; 37-Discharge port 2; 38-Card slot; 39-Bottom edge; 310-Spiral blade; 311-Motor shaft 2; 312-Extrusion head; 313-Coupling 2; 314-Motor bracket; 315-Extrusion sheet; 316-Locking block; 317-Notch 2; 318-Locking portion; 319-Locking piece 2; 320-Auxiliary strip;

[0076] 4-heating device; 41-heating tube; 42-cavity; 43-connecting port; 44-discharge port 3; 45-pipeline;

[0077] 5-collecting device; 51-inner frame; 52-inner cavity three; 53-water permeable hole; 54-handle; 55-outer frame; 56-connecting plate;

[0078] 6-sink; 61-inner cavity 4; 62-support part; 63-suction port; 64-basin pad;

[0079] 71-profile 1; 72-profile 2; 73-profile 3; 74-fixing plate 1; 74a-mounting surface 1; 74b-mounting surface 2;

[0080] 81-profile 4; 82-profile 5; 83-fixing plate 2;

[0081] 9-Exhaust fan;

[0082] a-Printing device. DETAILED DESCRIPTION

[0083] like Figures 1 to 29 As shown, the 3D food printing preprocessing system of the present invention is used to preprocess thawed meat.

[0084] The 3D food printing preprocessing system comprises a body 1, a crushing device 2, an extrusion device 3, a heating device 4, and a collection device 5. The specific preprocessing operation is as follows: thawed meat is placed in the crushing device 2, which crushes the meat at high speed. After a certain period of time, the meat is evenly crushed. The remaining powder and water are then added, and the crushed meat is stirred in the crushing device 2 for a certain period of time until the materials are evenly mixed. Gravity and the centrifugal force generated by the crushing device 2 cause the material to fall into the extrusion device 3, which conveys and extrudes the material. The heating device 4 heats the extruded material, which can be heated using a continuous supply of steam and a small amount of high-temperature water. The material and high-temperature water then fall into the collection device 5, where they are collected. Once the collection device 5 is full, an empty collection device 5 is replaced with a full one, and new collection devices are continuously replaced until no more material is left. The present invention combines the extrusion device and heating device with existing 3D printing technology to produce meat products with complex geometries, customized nutritional profiles, or specialized textures.

[0085] The body 1 is installed on the frame in a split manner, wherein the frame is fixed with horizontally and vertically distributed body profiles 112, the front door 11 is fixed to the front side of the entire frame, the rear cover 14 is fixed to the rear side of the entire frame, the right cover 12 is fixed to the right side of the entire frame, the left cover 13 is fixed to the left side of the entire frame, the upper cover 16 is fixed to the top of the entire frame, and the bottom plate 15 is fixed to the bottom of the entire frame, forming an internally hollow body 1.

[0086] The present invention secures two parallel profiles 1 (71) and 2 (72) to the upper body profile 112. Profile 2 (72) is longer than profile 1 (71), and together they form mounting base 1. To enhance the structural stability of mounting base 1, profile 3 (73) is secured between profile 1 (71) and profile 2 (72), between adjacent profiles 1 (71), and between adjacent profiles 2 (72). Fixing plate 1 (74) is bolted to profiles 1 (71) and 2 (72). Fixing plate 1 (74) is tilted and serves to mount the entire crushing device 2.

[0087] The crushing device 2 includes a motor 214, a crushing shaft 216, and a crushing chamber 21. The crushing chamber 21 is cylindrical and has an inner cavity 1. The crushing chamber 21 is provided with a feed port 22 and a discharge port 24, which are connected to the inner cavity 1. After adding the thawed meat, the present invention needs to add the remaining powder and water. In order to prevent the powder and water from leaking out, the feed port 22 is extended to the front door 11, and then an opening 110 is set at the front door 11. At the same time, a feed piece 223 with a cavity inside is installed at the opening 110. The input port 224 of the feed piece 223 can be fixed at the opening 110 by screws, and the discharge port 225 of the feed piece 223 extends into the feed port 22 and is connected with the feed port 22. The thawed meat, powder and water enter the cavity of the feed piece 223 through the input port 224, and then enter the inner cavity through the discharge port 225 and the feed port 22.

[0088] Motor 1 214 of the present invention uses a 2kW servo motor, model QW110BL008302000. It is bolted to mounting surface 1 74a of fixing plate 1 74. Motor 1 214 is located within mounting base 1, which protects motor 1 214. The crushing chamber 21 has a mounting opening 27 that communicates with the inner cavity 1. The crushing chamber cover 23 is fixed to the mounting opening 27 with carbon steel screws, allowing the crushing chamber cover 23 to be removably connected to the crushing chamber 21. When the crushing chamber cover 23 is removed, the inner cavity 1 of the crushing chamber 21 can be cleaned, ensuring the cleanliness of the crushing chamber 21 and preventing impurities from affecting the printed product. The present invention provides a mounting slot on mounting surface 2 (74b) of fixed plate 1 (74), into which a magnet is embedded. Mounting surface 2 (74b) is arranged parallel to mounting surface 1 (74a). After the crushing chamber cover 23 and crushing chamber 21 are secured, the cover 23 is screwed to fixed plate 1 (74). Simultaneously, the carbon steel screws attract the magnets in the mounting slot, tilting the crushing chamber 21 to the set position on fixed plate 1 (74), thereby improving the installation accuracy of the crushing device 2. The installation height of feed port 1 (22) is greater than that of discharge port 1 (24), allowing materials to slide from feed port 1 (22) toward discharge port 1 (24) under the action of gravity. Fixed plate 1 (74) separates the crushing chamber 21 from motor 1 (214). This independent separation allows the motor to be disassembled without opening the crushing chamber 21, saving maintenance time and enabling rapid inspection. It also prevents water in the crushing chamber 21 from affecting the motor, improving safety.

[0089] The crushing shaft 216 of the present invention is arranged in the inner cavity 1. The motor shaft 1215 of the motor 1214 passes through the through hole 1 of the fixed plate 174 and also passes through the crushing chamber cover 23. The motor shaft 1215 is connected to the crushing shaft 216 via the coupling 1218, efficiently transmitting the rotational power and torque of the motor 1214 to the crushing shaft 216. The motor shaft 1215 drives the crushing shaft 216 to rotate. A plurality of crushing blades 217 are provided on the outside of the crushing shaft 216. The present invention has four crushing blades 217, and the angle between the projections of two adjacent crushing blades 217 is 90°. The crushing blades 217 crush the thawed meat, and the crushing time is 2 minutes. The crushing speed is controlled at 2000 rpm / min. The powder and water added later are then stirred to ensure that the materials are evenly mixed. The weight of the powder and water added varies depending on the type of meat.

[0090] (1) After the beef is crushed, the weight proportions of the beef, water and powder are as follows: the weight of the beef is 30% of the total weight, the weight of the water is 30% of the total weight, and the weight of the powder is 40% of the total weight.

[0091] (2) After the chicken breast is crushed, the weight proportions of the chicken breast, water and powder are as follows: the weight of the chicken breast is 50% of the total weight, the weight of the water is 20% of the total weight, and the weight of the powder is 30% of the total weight.

[0092] (3) After the shrimp meat was crushed, the weight proportions of the shrimp meat, water, and powder were as follows: the weight of the shrimp meat was 48% of the total weight, the weight of the water was 21% of the total weight, and the weight of the powder was 31% of the total weight.

[0093] Through the crushing and stirring steps, the meat fibers are fully broken down and evenly mixed with the powder and water to form a homogenous slurry. This improves the material's fluidity and extrusion stability, avoiding blockages or faults caused by uneven particle size during 3D printing. Furthermore, by adjusting the ratio of powder to water, the viscosity of the mixed material is more suitable for 3D printing, maintaining shape stability after extrusion without clogging the printer nozzle due to excessive viscosity.

[0094] The present invention takes into account the weight of the crushing device 2 and the weight of the added material to prevent the crushing device 2 from detaching from the fixed plate 74. The present invention fixes the silo clamping plate 219 at the mounting surface 74b. The silo clamping plate 219 is provided with a notch 220, so that the silo clamping plate 219 forms a clamping portion 221. The edge 28 of the crushing bin 21 and the edge 29 of the crushing bin cover 23 are embedded in the notch 220. The clamping portion 221 clamps the edge 28 and the edge 29, so that the silo clamping plate 219 limits the crushing bin 21 and the crushing bin cover 23, thereby improving the force-bearing capacity of the crushing device 2 and meeting the requirements of the amount of meat, powder and water added. The present invention uses a locking member 222 to secure the silo compression plate 219 to the second mounting surface 74b. To facilitate movement of the silo compression plate 219, the locking member 222 of the present invention is a handwheel comprising a threaded post, a pressure block, and a handle. The pressure block is fixedly connected to the threaded post and the handle. The silo compression plate 219 is provided with an oblong hole. The threaded post passes through the oblong hole and is threadedly connected to the threaded hole of the second mounting surface 74b. The pressure block is pressed against the silo compression plate 219. When the handwheel is rotated, the pressure block no longer compresses the silo compression plate 219, but can move the silo compression plate 219, thereby freeing the silo compression plate 219 from restricting the crushing bin 21 and the crushing bin cover 23.

[0095] In order to ensure that the materials in the crushing device 2 are evenly mixed before falling into the extrusion device 3, the present invention provides a discharge hopper door 25 in the discharge port 1 24, and the discharge hopper door 25 matches the discharge port 1 24. The movement of the discharge hopper door 25 is controlled by the drive mechanism 210. The drive mechanism 210 uses a hopper motor module composed of a screw motor 2101 and a screw 2102. The hopper motor module model is FSK30Tr8*12*100mm. The profile 3 73 is fixed to the mounting plate 211 by bolts, and the screw motor 2101 is fixed to the mounting plate 211. The screw 2102 is connected to the slider 212, and the slider 212 is fixed to the hopper push block 213 by screws. An ear plate is provided at the bottom of the discharge hopper door 25, and the ear plate is fixed to the hopper push block 213. The screw motor 2101 drives the screw 2102 to rotate in the forward or reverse direction, causing the slider 212 to move back and forth linearly on the screw 2102. When the slider 212 moves forward, the discharge bin door 25 closes at the discharge port 24, allowing the materials in the crushing device 2 to be evenly mixed. When the slider 212 moves backward, the discharge bin door 25 opens at the discharge port 24. After the materials are evenly mixed, they fall into the extrusion device 3 due to the rotating centrifugal force of the crushing blades 217 and the material's own gravity. The rotating centrifugal force of the crushing blades 217, combined with the material's gravity, promotes the orderly discharge of the materials, reduces the energy consumption of active conveying, and optimizes energy utilization while ensuring mixing quality. The discharge bin door 25 is then adjusted by the screw motor 2101 to achieve progressive discharge and improve production continuity. To improve the stability of the directional movement of the discharge bin door 25, two symmetrically arranged guide rails 26 are fixed to the outside of the crushing bin 21. The guide rails 26 and the crushing bin 21 form a guide groove. The discharge bin door 25 extends into the guide groove and moves back and forth linearly along the axis of the crushing bin 21.

[0096] The present invention secures two parallel profiles 4 81 and 5 82 to the lower body profile 112. Profiles 5 82 are longer than profile 4 81, and together they form mounting base 2. A second fixing plate 83 is bolted to profiles 4 81 and 5 82. This plate 83 is tilted and serves to mount the entire extrusion device 3. The mounting position of the extrusion device 3 is designed to correspond to the mounting position of the crushing device 2.

[0097] The extrusion device 3 includes an extrusion housing 31, a second motor 32, an extrusion screw 33, and a mold 35. The extrusion housing 31 has a housing bottom fixed to the second fixing plate 83. The extrusion housing 31 defines a second inner cavity, a second feed port 34, and a second discharge port 37. The second feed port 34 and the second discharge port 37 communicate with the second inner cavity. The second feed port 34 extends toward the first discharge port 24, and the diameter of the second feed port 34 gradually increases from bottom to top, making the opening of the second feed port 34 larger than the opening of the first discharge port 24. The uniformly mixed material can fall from the first discharge port 24 into the second feed port 34 and then into the second inner cavity.

[0098] The present invention fixes the motor bracket 314 on the fixing plate 2 83 by bolts, and the motor 2 32 is fixed to the motor bracket 314 by bolts. The model of the motor 2 32 is 57HD7214-21B [2.3Nm]. The motor shaft 2 311 of the motor 2 32 passes through the through hole 2 of the motor bracket 314 and is connected to the extrusion screw 33 through the coupling 2 313, transmitting the power of the motor 2 32 to the extrusion screw 33, ensuring that the rotation speed of the extrusion screw 33 is synchronized with the motor, which directly affects the extrusion molding accuracy. The extrusion screw 33 is provided with a spiral blade 310, and the extrusion screw 33 is arranged in the inner cavity 2. The motor 2 32 drives the extrusion screw 33 to rotate. The spiral-shaped spiral blade 310 transports the material entering the feed port 2 34 to the discharge port 2 37, which can continuously transport the material. The extrusion housing 31 is provided with a slot 38, which is connected to the second discharge port 37. The mold 35 is inserted into the slot 38 and placed in the second discharge port 37. The mold 35 is provided with multiple extrusion holes 36, and the aperture of the extrusion holes 36 is designed to be 2 to 4 mm. The mold 35 is detachable from the extrusion housing 31, which facilitates cleaning of the mold 35 and prevents material from clogging the extrusion holes 36. The extrusion screw 33 is provided with an extrusion head 312, which is provided with an extrusion plate 315. When the extrusion screw 33 rotates, the extrusion plate 315 squeezes the material, causing the material to be extruded from the extrusion holes 36.

[0099] To heat the material extruded from the extrusion orifice 36, the present invention incorporates a heating device 4, a steam generator, within the machine body 1. A heating tube 41 is disposed at the end of the extrusion housing 31. This heating tube 41 has a cavity 42 and a third discharge port 44, which are in communication with each other. The end of the extrusion housing 31 extends into the cavity 42 of the heating tube 41, positioning the extrusion orifice 36 within this cavity 42. The heating tube 41 has a connection port 43, which connects to the cavity 42. A steam generator is connected to this connection port 43 via a pipe 45. The steam generator heats for 15 to 20 seconds, delivering steam and high-temperature water into the cavity 42 via pipe 45 and connection port 43. The steam and high-temperature water heat the material extruded from the extrusion orifice 36. The heated material and high-temperature water then pass through the third discharge port 44 and fall into the collection device 5. The steam heating promotes the premature gelation of the meat protein and the added powder, enhancing the material's self-supporting properties and making the printed structure less prone to collapse. Moreover, heating the materials with steam and high-temperature water (the heating temperature is usually 75℃~90℃) can effectively reduce the microbial load and extend the shelf life of subsequent printed materials.

[0100] The present invention needs to improve the stability of the extrusion device 3 to adapt to the operation of material extrusion and heating. Two auxiliary strips 320 are fixed to the fixed plate 2 83 by screws, and the bottom of the shell is provided with a bottom edge 39. The two auxiliary strips 320 limit the bottom edge 39, so that the extrusion device 3 is positioned at the set position of the fixed plate 2 83, and then the bottom of the shell and the fixed plate 2 83 are fixed. The fixed plate 2 83 is provided with a locking block 316, and the locking block 316 is provided with a notch 2 317, so that the locking block 316 forms a locking portion 318, and the extrusion shell 31 is provided with a bottom edge 39. The bottom edge 39 is embedded in the notch 2 317, so that the locking portion 318 presses the bottom edge 39, so that the locking block 316 limits the extrusion shell 31, increases the stability of the entire extrusion device 3, and meets the operational requirements of material extrusion and heating. The present invention uses a locking piece 2 319 to fix the locking block 316 at the fixed plate 2 83, and the locking piece 2 319 also uses a hand wheel.

[0101] The collection device 5 is a wash basin with an inner cavity 52. A collection port is provided at the top of the basin, communicating with the inner cavity 52. The material and high-temperature water discharged from the discharge port 44 are collected in the inner cavity 52 through the collection port. The wash basin of the present invention is designed as an outer frame 55 and an inner frame 51. The inner frame 51 is inserted from top to bottom into a groove in the outer frame 55. The inner cavity 52 is formed by stamping the inner frame 51. Multiple water-permeable holes 53 with a diameter of 30 mm can be provided on the bottom and sides of the inner frame 51. The water-permeable holes 53 communicate with the inner cavity 52. The outer frame 55 does not have water-permeable holes 53. A handle 54 is provided on the outside of the inner frame 51. The outer frame 55 is provided with a connecting plate 56. The connecting plate 56 has an embedded groove, into which the handle 54 is embedded. Once the basin is filled with material and high-temperature water, remove the entire basin and apply force to the handle 54 to lift the inner frame 51 upward from the outer frame 55. Water in the material is discharged through the water holes 53. The bottom holes 53 are for direct drainage, while the side holes 53 are clogging-resistant. This basin design, with its split structure (outer frame + inner frame) and drainage mechanism, efficiently combines material dehydration with 3D printing raw material pretreatment.

[0102] During the collection of materials and high-temperature water, water inevitably drips from the basin. To this end, a water trough 6 is screwed to the housing profile 112. This trough 6 is formed by stamping to form a fourth inner cavity 61. The basin is positioned above this inner cavity 61, allowing dripping water to fall into and be collected. To facilitate removal of the basin, a removal port 17 is provided on the front door 11. The front door 11 also features an inclined rear panel 18 to increase space. This rear panel 18 is provided with a third through-hole 19, through which the mold 35 passes.

[0103] The materials and high-temperature water falling into the basin have a certain impact, and the present invention replaces the collection device 5 to collect materials. In actual operation, at least three basins need to be set up. In view of the above situation, a basin pad 64 is set in the inner cavity 61. The basin pad 64 is U-shaped. Multiple basins can be placed on the basin pad 64 at the same time. When a basin is full, the empty basin can be quickly replaced without interrupting the process, thereby ensuring the efficiency of material collection. The water tank 6 is bent to form a support portion 62, and the connecting plate 56 is supported on the support portion 62. The handle 54 and the connecting plate 56 extend from the removal port 17 to facilitate the removal of the basin. The operator can pull out the basin without putting his hand into the interior of the device, avoiding the operator from coming into contact with high-temperature water and being scalded.

[0104] In actual operation, high-temperature water falling into the wash basin will generate steam, which will affect the normal operation of the crushing device 2 and the extrusion device 3. To address this problem, the present invention fixes an exhaust fan 9 at the water tank 6. The water tank 6 is also provided with a suction port 63, and the right cover 12 is provided with a discharge port 111. The exhaust fan 9 is correspondingly arranged between the suction port 63 and the discharge port 111. The rotation of the fan blades in the exhaust fan 9 generates negative pressure, so that the steam generated in the wash basin is sucked in through the suction port 63, passes through the exhaust fan 9, and is then discharged to the outside of the body 1 through the discharge port 111, thereby reducing the impact of the steam on the operation of the crushing device 2 and the extrusion device 3.

[0105] like Figure 30 The figure shows the printing device of the present invention. The printing device a utilizes a conventional 3D printer, and the present invention does not specifically describe its structure. The 3D food printing pretreatment system pre-treats the thawed meat, and the printing device 3D prints the pre-treated material to produce the desired printed food.

[0106] This method improves material fluidity and extrusion stability, preventing blockage caused by uneven particle size during 3D printing. Furthermore, heating can promote the partial gelation of meat protein and added powders, enhancing the material's self-supporting properties. The technical results are shown in Table 1.

[0107] Table 1

[0108] index Traditional methods The present invention Blockage rate 20～30% ＜5% Self-supporting property (height retention after standing for 10 minutes) ＜50% ＞90%

Claims

1. 3D food printing pretreatment system, characterized by: include: an organism; a crushing device, which is used to crush the thawed meat and mix it evenly; an extrusion device, the extrusion device being used to extrude the material discharged from the crushing device; a heating device, the heating device being used to heat the material extruded by the extrusion device; a collecting device, the collecting device being used to collect the material heated by the heating device; The crushing device includes a driving mechanism 1, a crushing chamber, and a crushing element. The crushing chamber is provided with an inner cavity 1, the crushing chamber is provided with a feed port 1 and a discharge port 1, the feed port 1 and the discharge port 1 are connected to the inner cavity 1, the crushing element is provided in the inner cavity 1, the driving mechanism 1 is connected to the crushing element, the driving mechanism 1 drives the crushing element, so that the crushing element crushes and stirs the thawed meat in the inner cavity 1, and the evenly mixed material is discharged from the discharge port 1 into the extrusion device; The extrusion device includes an extrusion shell, a second motor, an extrusion screw and a mold. The extrusion shell is fixed to the machine body. The extrusion shell is provided with an inner cavity II. The extrusion shell is provided with a second feed port and a second discharge port. The second feed port and the second discharge port are connected to the second inner cavity. The material discharged by the crushing device enters the second inner cavity through the second feed port. The extrusion screw is arranged in the second inner cavity. The extrusion screw is provided with spiral blades. The second motor is provided with a second motor shaft. The second motor shaft is connected to the extrusion screw and controls the rotation of the extrusion screw. The spiral blades transport the material entering from the second feed port to the second discharge port. The mold is arranged in the second discharge port. The mold is provided with an extrusion hole. The extrusion screw extrude the material from the extrusion hole.

2. The 3D food printing pretreatment system according to claim 1, characterized in that: The crushing member includes a crushing shaft and a crushing blade installed on the crushing shaft. The driving mechanism adopts a motor. The motor is provided with a motor shaft, and the motor shaft is connected to the crushing shaft.

3. The 3D food printing pretreatment system according to claim 1, characterized in that: The machine body is provided with an opening, a feeding piece is installed on the opening, the feeding piece is provided with an input port and a discharge port, the discharge port is connected to the first feeding port, and the input port is fixed at the opening.

4. The 3D food printing pretreatment system according to claim 2, characterized in that: The machine body is equipped with a mounting seat 1, the mounting seat 1 is provided with a fixing plate 1, the fixing plate 1 is provided with a mounting surface 1, the mounting surface 1 is fixed to the mounting seat 1, the motor 1 is provided at a place on the mounting surface, the fixing plate 1 is provided with a through hole 1, the motor shaft 1 passes through the through hole 1, the fixing plate 1 is provided with a mounting surface 2, the mounting surface 2 is arranged parallel to the mounting surface 1, and the crushing bin is installed at the mounting surface 2.

5. The 3D food printing pretreatment system according to claim 4, characterized in that: The crushing bin is provided with a mounting opening, the mounting opening is detachably connected to a crushing bin cover, and the crushing bin cover is fixed at two locations on the mounting surface.

6. The 3D food printing pretreatment system according to claim 5, characterized in that: The second mounting surface is provided with a silo pressing piece, and the silo pressing piece limits the crushing silo and the crushing silo cover.

7. The 3D food printing pretreatment system according to claim 6, characterized in that: The fixing plate 1 is detachably connected to a locking piece 1, and the locking piece 1 fixes the silo pressing piece on the mounting surface 2.

8. The 3D food printing pretreatment system according to claim 4, characterized in that: The mounting seat 1 includes profile 1 and profile 2, and the profile 1 and profile 2 are fixed to the machine body. The length of profile 2 is greater than the length of profile 1. The fixing plate 1 is fixed to profile 1 and profile 2, so that the crushing device is set at an angle, and the installation height of the feed port 1 is greater than the installation height of the discharge port 1.

9. The 3D food printing pretreatment system according to claim 4, characterized in that: The mounting seat 1 is provided with a driving mechanism 2, the driving mechanism 2 is connected to a slider, the slider is fixed with a discharge bin door, and the driving mechanism 2 controls the slider to move back and forth linearly, so that the discharge bin door is opened or closed at the discharge port.

10. The 3D food printing pretreatment system according to claim 9, characterized in that: The crushing bin is provided with a guide rail, and the guide rail and the crushing bin form a guide groove. The discharge bin door extends into the guide groove and moves back and forth linearly along the axis direction of the crushing bin.

11. The 3D food printing pretreatment system according to claim 1, characterized in that: The machine body is installed with a second mounting seat, the second mounting seat is provided with a second fixing plate, and the extrusion device is fixed on the second fixing plate.

12. The 3D food printing pretreatment system according to claim 11, characterized in that: The second fixing plate is provided with a locking block, and the locking block limits the extrusion shell.

13. The 3D food printing pretreatment system according to claim 12, characterized in that: The second fixing plate is detachably connected to a second locking piece, and the second locking piece fixes the locking block at the second fixing plate.

14. The 3D food printing pretreatment system according to claim 12, characterized in that: An auxiliary strip is fixed to the second fixing plate, and the auxiliary strip positions the extrusion device at a set position of the second fixing plate.

15. The 3D food printing preprocessing system according to claim 1, characterized in that: The heating device is connected to a heating pipe, which is installed on the extrusion device. The heating device is a steam generator, which is connected to the heating pipe via a pipeline. The steam generator transports steam and water to the heating pipe through the pipeline. The steam and water in the heating pipe heat the material extruded by the extrusion device.

16. The 3D food printing pretreatment system according to claim 1, characterized in that: The collecting device adopts a wash basin, the wash basin is provided with a third inner cavity, and the top of the wash basin is provided with a collecting port connected with the third inner cavity.

17. The 3D food printing pretreatment system according to claim 16, characterized in that: The machine body is provided with a removal outlet and a water tank, the water tank is provided with an inner cavity four, the wash basin is supported on the water tank after passing through the removal outlet, and is arranged above the inner cavity four.

18. The 3D food printing pretreatment system according to claim 17, characterized in that: A wash basin pad is provided in the inner cavity four, and the wash basin is supported on the wash basin pad.

19. The 3D food printing pretreatment system according to claim 16, characterized in that: The wash basin includes an outer frame and an inner frame, the outer frame is provided with a groove, the inner frame is arranged in the groove, the inner cavity three is located in the inner frame, the inner frame is provided with a water hole, and the water hole is connected to the inner cavity three.

20. A printing device, characterized in that: The printing device 3D prints the material preprocessed by the 3D food printing preprocessing system according to any one of claims 1 to 19.

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