Charging barrel structure and multifunctional food 3D printer

Abstract

The invention discloses a charging barrel structure and a multifunctional food 3D printer, and relates to the technical field of food processing.The charging barrel structure comprises a shell, a plurality of charging cores, an extrusion rod and a driving device, a discharging opening is formed in the lower end of the shell, a discharging position is arranged in the shell, and the discharging position and the center line of the shell are arranged in a staggered mode; the plurality of charging cores are uniformly arranged in the circumferential direction of the shell, and are rotationally mounted in the shell by taking the center line of the shell as a rotating shaft, so that the charging cores can sequentially move to the discharging position on the moving stroke, and when the charging cores are positioned at the discharging position, the lower ends of the charging cores are communicated with the discharging opening; the extrusion rod extends in the vertical direction and is movably arranged in the shell in the vertical direction, and the extrusion rod is arranged corresponding to the discharging position. The driving device is used for driving the charging core to rotate and driving the extrusion rod to move in the vertical direction; according to the technical scheme, the problems that in existing equipment, a charging barrel structure with an automatic material changing function is high in cost and large in equipment size are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processing, in particular to a material cylinder structure and a multifunctional food 3D printer. BACKGROUND

[0002] Food 3D printing technology, as an important means of personalized nutrition customization, has gradually increased in application in household and commercial scenarios in recent years.

[0003] A food 3D printer mainly extrudes food materials to a printing plate through a material cylinder. A plurality of food materials are arranged in the material cylinder. In a commercial food 3D printer, a plurality of nozzles are usually connected in parallel or manual intervention is used to replace the materials, which results in a large volume of the material cylinder and a long time-consuming replacement process and a high residual rate. This not only affects the printing efficiency, but also may cause cross contamination or waste of food materials. Although some devices attempt to realize automatic replacement of the material cylinder through a visual positioning system, such a solution is costly, has a large device volume, and has a very high requirement for the accuracy of the control algorithm, and is difficult to popularize in household scenarios. SUMMARY

[0004] The main purpose of the present application is to provide a material cylinder structure and a multifunctional food 3D printer, which aims to improve the problem of high cost and large device volume of the material cylinder structure with an automatic material replacement function in the existing device.

[0005] To achieve the above-mentioned purpose, the material cylinder structure provided by the present application comprises: a shell arranged in a cylindrical shape extending in the up-down direction, a discharge port is arranged at the lower end of the shell, and a discharge position is arranged inside the shell, wherein the discharge position is arranged offset from the center line of the shell; a plurality of charging cores are uniformly arranged along the circumference of the shell and are rotatably installed in the shell with the center line of the shell as the rotation axis, so that they can be sequentially moved to the discharge position in their active stroke, and the lower end of the charging core is in communication with the discharge port when the charging core is located at the discharge position; an extrusion rod extending in the up-down direction and movably arranged in the shell in the up-down direction, which is arranged corresponding to the discharge position to extrude the material in the charging core located at the discharge position from the discharge port; and a driving device for driving the rotation of the charging core and driving the movement of the extrusion rod in the up-down direction.

[0006] In an embodiment, the driving device comprises: a driving shaft rotatably installed in the shell and movably arranged on the center line of the shell in the up-down direction, wherein a first matching part and a second matching part are arranged on the driving shaft and are spaced apart in the up-down direction; and A rotating disc is rotatably installed in the shell, an axis of the rotating disc is coaxially arranged with a center line of the shell, a plurality of through holes are arranged on the rotating disc in a circumferential direction, each of the through holes is used to install one of the charging cores, and a first transmission part is arranged at a middle part of the rotating disc; A second transmission part is arranged on the extrusion rod; The driving shaft is capable of making the first transmission part cooperate with the first transmission part to drive the rotating disc to rotate or making the second transmission part cooperate with the second transmission part to drive the extrusion rod to ascend or descend in the activity stroke in the up-down direction.

[0007] In an embodiment, the second transmission part includes a driving gear fixed on the driving shaft, the second transmission part includes a fixed gear fixedly sleeved on the extrusion rod, and the fixed gear is limited in activity in the up-down direction.

[0008] In an embodiment, the driving device further includes a transmission shaft arranged in the shell in the up-down direction, two transmission gears are sleeved on the transmission shaft, one of the transmission gears is used to mesh with the driving gear in the activity process of the driving shaft in the up-down direction, and the other transmission gear is always meshed with the fixed gear.

[0009] In an embodiment, the driving device further includes: An outer cylinder is fixedly connected with the rotating disc, and a first clamping part is arranged on the outer cylinder. An inner cylinder is located at an inner side of the outer cylinder, an upper end of the inner cylinder protrudes from the outer cylinder, and the first transmission part is arranged on the upper end of the inner cylinder. A transmission assembly is drivingly connected with the outer cylinder and the inner cylinder, and is used to drive the outer cylinder to rotate when the inner cylinder rotates by a certain angle. An abutting block is arranged in the shell in a radial direction of the inner cylinder and located at an outer side of the outer cylinder, a second clamping part is arranged on the abutting block, the second clamping part is used to cooperate with the first clamping part to stop the rotation of the outer cylinder in a first position, and the second clamping part is used to separate from the outer cylinder to enable the rotation of the outer cylinder in a second position. When the abutting block is located at the first position, one of the charging cores is in the discharging position.

[0010] In an embodiment, one of the first clamping part and the second clamping part is a clamping groove, and the other is a clamping block.

[0011] In an embodiment, a plurality of abutting blocks corresponding to the number of the charging cores are arranged, and the abutting blocks are elastically installed at an inner side of the shell by elastic members. The transmission assembly comprises an inclined sliding block and a transmission spring, one end of the transmission spring is arranged on the inclined sliding block, and the other end is arranged on the outer cylinder, so that the outer cylinder is driven to rotate after the inclined sliding block rotates by a certain angle, one end of the inclined sliding block is fixed on the inner cylinder, and the other end extends along the radial direction of the inner cylinder, the inclined sliding block has an inclined surface, which can cooperate with the inclined surface of the abutting block during rotation of the inclined sliding block to drive the abutting block from the first position to the second position.

[0012] In an embodiment, the first clamping part comprises a clamping groove, the second clamping part comprises a clamping block, the clamping groove comprises an adjacent matching surface and a rotation stopping surface, the matching surface comprises a smooth arc surface or an inclined surface, and the rotation stopping surface is arranged along the radial direction of the outer cylinder, so that the matching surface and the rotation stopping surface are matched with the second clamping part in sequence during matching of the clamping groove and the clamping block. When the rotation stopping surface is matched with the clamping block, the outer cylinder is stopped from rotating.

[0013] In an embodiment, the abutting block is provided with an elongated hole extending along the radial direction of the inner cylinder, and the extrusion rod is arranged in the elongated hole.

[0014] The application further provides a multifunctional food 3D printer, which comprises a barrel structure. The barrel structure comprises: An outer shell is arranged in a cylindrical shape extending along the up-down direction, the lower end of the outer shell is provided with a discharge port, and the inside of the outer shell is provided with a discharge position, which is arranged offset from the center line of the outer shell. A plurality of charging cores are uniformly arranged along the circumferential direction of the outer shell and are rotatably installed in the outer shell with the center line of the outer shell as the rotation axis, so that they can be sequentially moved to the discharge position in their active stroke, and when the charging core is located at the discharge position, the lower end of the charging core is in communication with the discharge port. An extrusion rod is arranged in the outer shell and is movable along the up-down direction, and the extrusion rod is arranged corresponding to the discharge position to extrude the material in the charging core located at the discharge position from the discharge port. A driving device is arranged to drive the rotation of the charging core and the up-down movement of the extrusion rod.

[0015] In the technical solution of this invention, only one of the multiple feeding cores can be located at the discharge position. When it is necessary to switch the feeding core, the driving device drives the multiple feeding cores to rotate around the center line of the outer shell as the rotation axis, thereby placing the feeding core to be used at the discharge position. Then, the driving device drives the extrusion rod to move up and down, extruding the material in the feeding core. The technical solution of this invention improves the problem of high cost and large size of the material cylinder structure with automatic material changing function in existing equipment by using a single driving device to drive the rotation of the feeding core and drive the extrusion rod to move in the up and down direction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an embodiment of the barrel structure provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure of one embodiment of the central feed cylinder structure; Figure 3 for Figure 2 A cross-sectional schematic diagram of an embodiment of the central feed cylinder structure; Figure 4 for Figure 2 A magnified view of a section at point A in the middle; Figure 5 for Figure 2 A schematic diagram of the snap-fit ​​groove on the inner and outer cylinders; Figure 6 A schematic diagram of a structure of an embodiment of the multifunctional food 3D printer provided by the present invention; Figure 7 for Figure 5 A schematic diagram of the structure of a multifunctional food 3D printer from another angle; Figure 8 for Figure 5 A schematic diagram of the cooperation structure between the first driving device and the rotating structure in the process; Figure 9 for Figure 5 A schematic diagram of the structure of the first drive unit in the process; Figure 10 for Figure 7 A schematic diagram of the mating structure between the guide block and the mounting base; Figure 11 for Figure 5A schematic diagram of the mounting base.

[0018] Explanation of icon numbers: 100. Barrel structure; 1. Outer shell; 2. Loading core; 3. Extrusion rod; 31. Second transmission part; 311. Fixed gear; 4. Drive device; 41. Drive shaft; 411. First mating part; 412. Second mating part; 4121. Drive gear; 42. Rotary disk; 421. First transmission part; 43. Transmission shaft; 431. Transmission gear; 44. Outer cylinder; 441. First snap-fit ​​part; 4411. Snap-fit ​​groove; 44111. Mating surface; 44112. Anti-rotation surface; 45. Inner cylinder; 46. Transmission assembly; 461. Inclined slider; 462. Transmission spring; 47. Abutment block; 471. Second snap-fit ​​part; 4711. Snap-fit ​​block; 472. Elongated hole; 48. Elastic element; 49. First drive motor; 4010. Second drive motor; 4011. Drive screw; 200. Multifunctional food 3D printer; 201. Mounting base; 2011. Guide groove; 20111. First guide section; 20112. Second guide section; 20113. Bending section; 202. Printing platform; 203. Support frame; 204. Rotating structure; 2041. Rotating block; 2042. Guide block; 20421. Rotating shaft; 20422. Sliding end; 20423. Rotating end; 205. First driving device; 2051. First motor; 2052. First threaded rod; 2053. First slider; 206. Second driving device; 20 61. Second motor; 2062. Transmission rod; 2063. Connecting rod; 207. Third drive unit; 2071. Third motor; 2072. First pulley; 2073. First belt; 2074. Second slider; 208. Fourth drive unit; 2081. Slide rail; 2082. First drive unit; 20821. Second threaded rod; 20822. Third slider; 20823. Fourth motor; 2083. Second drive unit; 20831. Fifth motor; 20832. Second pulley; 20833. Second belt; 20834. Fourth slider.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] Food 3D printing technology, as an important means of personalized nutrition customization, has been increasingly used in home and commercial settings in recent years.

[0024] Multifunctional food 3D printers primarily use a material barrel to extrude food onto a printing plate. The barrel contains various ingredients. Commercial multifunctional food 3D printers typically employ parallel multi-nozzle connections or manual material changing, resulting in lengthy material changing processes and high residue rates. This not only impacts printing efficiency but can also lead to cross-contamination or waste of ingredients. While some devices attempt to automate material changing using visual positioning systems, these solutions are costly, require bulky equipment, and demand extremely high precision in control algorithms, making them difficult to implement in home environments.

[0025] This invention proposes a material cylinder structure 100, which can improve the problems of high cost and large size of existing material cylinder structures 100 with automatic material changing function.

[0026] Please see Figures 1 to 3In an embodiment of the present invention, the material cylinder structure 100 includes a shell 1, a plurality of material cores 2, an extrusion rod 3, and a driving device 4. The shell 1 is cylindrical in shape extending in the vertical direction, and has a discharge port at its lower end. A discharge position is located inside the shell 1, offset from the center line of the shell 1. The plurality of material cores 2 are evenly arranged circumferentially around the shell 1 and are rotatably mounted inside the shell 1 about the center line of the shell 1, so that they can sequentially move to the discharge position during their travel. When a material core 2 is located at the discharge position, its lower end communicates with the discharge port. The extrusion rod 3 extends vertically and is movably disposed within the shell 1 in the vertical direction. The extrusion rod 3 is positioned corresponding to the discharge position and is used to expel the material in the material core 2 located at the discharge position from the discharge port. The driving device 4 is used to drive the rotation of the material cores 2 and to drive the extrusion rod 3 to move in the vertical direction.

[0027] In the technical solution of this invention, only one of the multiple loading cores 2 can be located at the discharge position. When it is necessary to switch the loading core 2, the driving device 4 drives the multiple loading cores 2 to rotate around the center line of the outer shell 1 as the rotation axis, thereby placing the loading core 2 to be used at the discharge position. Then, the driving device 4 drives the extrusion rod 3 to move up and down, extruding the material in the loading core 2. The technical solution of this invention improves the problem of high cost and large size of the existing material cylinder structure 100 with automatic material changing function by using a single driving device 4 to drive the rotation of the loading core 2 and drive the extrusion rod 3 to move in the up and down direction.

[0028] When the extruded material needs to be changed, multiple feeding cores 2 are switching. At this time, driving the extrusion rod 3 will cause interference between the extrusion rod 3 and the feeding core 2. Conversely, when the extrusion rod 3 moves up and down to extrude the material of the feeding core 2, if multiple feeding cores 2 are driven to rotate around the center line of the outer shell 1, interference between the extrusion rod 3 and the feeding core 2 will also occur, causing serious damage to the equipment. Therefore, to avoid this situation, in the embodiment of the present invention, the driving device 4 includes a drive shaft 41 and a rotating disk 42. The drive shaft 41 is rotatably installed inside the outer shell 1 and is movably disposed on the center line of the outer shell 1 in the vertical direction. The drive shaft 41 is provided with first mating parts 4 spaced apart in the vertical direction. 11. A second mating part 412; the rotating disk 42 is rotatably mounted inside the outer casing 1, the axis of the rotating disk 42 is coaxial with the center line of the outer casing 1, the rotating disk 42 is provided with a plurality of through holes arranged at intervals along its circumference, each through hole is used to install one of the loading cores 2, a first transmission part 421 is provided in the middle of the rotating disk 42; a second transmission part 31 is provided on the extrusion rod 3; wherein, during the vertical stroke of the drive shaft 41, the first mating part 411 can cooperate with the first transmission part 421 to drive the rotating disk 42 to rotate, or the second mating part 412 can cooperate with the second transmission part 31 to drive the extrusion rod 3 to rise and fall. In other words, by ensuring that the drive shaft 41 can only cooperate with one of the rotating disk 42 or the extrusion rod 3 at the same time during its up-and-down movement, the drive device 4 can only drive the rotating disk 42 or the extrusion rod 3 at the same time, thereby preventing the extrusion rod 3 and the loading core 2 from interfering with each other when the rotating disk 42 or the extrusion rod 3 is driven at the same time.

[0029] It should be noted that the present invention does not limit the specific method of driving the drive shaft 41 to move up and down. In the embodiments of the present invention, a lead screw structure is used to drive the drive shaft 41 to move up and down. Specifically, the drive device 4 further includes a first drive motor 49, a second drive motor 4010 and a drive lead screw 4011. The drive lead screw 4011 extends in the vertical direction. The first drive motor 49 is used to drive the drive shaft 41 to rotate, and the first drive motor 49 is sleeved on the drive lead screw 4011. The second drive motor 4010 is used to drive the drive lead screw 4011 to rotate, thereby controlling the up and down movement of the first drive motor 49.

[0030] To smoothly drive the extrusion rod 3 to move up and down, in another embodiment of the present invention, the second mating part 412 includes a drive gear 4121 fixedly mounted on the drive shaft 41, and the second transmission part 31 includes a fixed gear 311 fixedly sleeved on the extrusion rod 3, and the movement of the fixed gear 311 in the vertical direction is limited. That is, in this embodiment, the drive gear 4121 on the drive shaft 41 and the fixed gear 311 on the extrusion rod 3 directly mesh, thereby directly driving the up and down movement of the extrusion rod 3, and further completing the extrusion of material.

[0031] Furthermore, in an embodiment of the present invention, the driving device 4 further includes a transmission shaft 43 extending vertically within the housing 1. Two transmission gears 431 are mounted on the transmission shaft 43. One of the transmission gears 431 meshes with the driving gear 4121 during the vertical movement of the driving shaft 41, while the other transmission gear 431 is always meshed with the fixed gear 311. In other words, compared to the previous embodiment, this embodiment adds a transmission shaft 43 and two transmission gears 431 between the driving gear 4121 and the fixed gear 311 for transmission. This facilitates adjusting the positional relationship between the gears during maintenance. Furthermore, the transmission gears 431 allow for control of the rotational speed of the fixed gear 311 by controlling the parameters of the transmission gears 431, thereby further controlling the vertical movement rate of the pressing rod 3.

[0032] Please refer to further information. Figure 4When the rotating disk 42 rotates, the material core 2 may not be in the discharge position. In this case, even if the extrusion rod 3 moves up and down normally, the material in the material core 2 will not be squeezed out. Therefore, to prevent this from happening, in the embodiment of the present invention, the driving device 4 further includes an outer cylinder 44, an inner cylinder 45, a transmission assembly 46, and an abutment block 47; wherein, the outer cylinder 44 is fixedly connected to the rotating disk 42, and the outer cylinder 44 is provided with a first snap-fit ​​part 441; the inner cylinder 45 is located inside the outer cylinder 44, the upper end of the inner cylinder 45 protrudes from the outer cylinder 44, and the upper end of the inner cylinder 45 is provided with the first transmission part 421; the transmission assembly Component 46 is a transmission connection between the outer cylinder 44 and the inner cylinder 45, used to drive the outer cylinder 44 to rotate when the inner cylinder 45 rotates at a certain angle; the abutment block 47 is provided with a second locking part 471, the abutment block 47 is movably disposed in the outer shell 1 along the radial direction of the inner cylinder 45 and located on the outside of the outer cylinder 44, so that it has a first position in which the second locking part 471 cooperates with the first locking part 441 to stop the rotation of the outer cylinder 44, and a second position in which the second locking part 471 is separated from the outer cylinder 44 to allow the outer cylinder 44 to rotate; wherein, when the abutment block 47 is in the first position, one of the filling cores 2 is in the discharge position. In other words, when the outer cylinder 44 stops rotating, the first locking part 441 and the second locking part 471 cooperate to stop the outer cylinder 44 from rotating, that is, the rotating disk 42 stops rotating, the abutment block 47 is in the first position, and one of the filling cores 2 is in the discharge position, thereby ensuring that when the outer cylinder 44 stops rotating, the rotating disk 42 stops rotating synchronously, and one of the filling cores 2 will definitely be in the discharge position.

[0033] In an embodiment of the present invention, one of the first latching portion 441 and the second latching portion 471 is a latching groove 4411, and the other is a latching block 4711. That is, the present invention provides latching structures on the outer cylinder 44 and the abutment block 47 so that when the first latching portion 441 on the outer cylinder 44 and the second latching portion 471 on the abutment block 47 engage with each other, the outer cylinder 44 stops rotating.

[0034] It should be noted that the present invention does not limit the driving method of the abutment block 47. For example, in another embodiment of the present invention, the abutment block 47 is manually driven. By manually driving the abutment block 47, when the appropriate loading core 2 moves to the discharge position, the second locking part 471 on the abutment block 47 is manually driven to cooperate with the first locking part 441 on the outer cylinder 44, so that the appropriate loading core 2 stops at the discharge position.

[0035] As a preferred embodiment of the manually driven abutment block 47 described above, in this embodiment of the invention, multiple abutment blocks 47 are provided corresponding to the number of the filling cores 2. The abutment blocks 47 are elastically installed on the inner side of the outer shell 1 by elastic members 48. The transmission assembly 46 includes a slider 461 and a transmission spring 462. One end of the transmission spring 462 is provided on the slider 461, and the other end is provided on the outer cylinder 44, so that when the slider 461 rotates at a certain angle, it drives the outer cylinder 44 to rotate. One end of the slider 461 is fixed on the inner cylinder 45, and the other end extends radially along the inner cylinder 45. The slider 461 has an inclined surface, which can cooperate with the inclined surface of the abutment block 47 during the rotation of the slider 461 to drive the abutment block 47 from the first position to the second position.

[0036] In the above embodiment, since the abutment block 47 is elastically installed on the inner side of the outer shell 1 by the elastic member 48, under the action of the elastic member 48, the abutment block 47 will spontaneously cooperate with the first locking part 441 when each first locking part 441 rotates to the position of the corresponding abutment block 47. That is, whenever a filling core 2 is in the discharge position, the abutment block 47 can spontaneously be in the first position, thereby locking the position of the filling core 2 in the discharge position until the next switching of the filling core 2. Furthermore, in this embodiment, since a transmission spring 462 and a slanted slider 461 are used as transmission components 46, the time for switching the loading core 2 can be shortened. Specifically, when the abutment block 47 is in the first position, the position of the outer cylinder 44 is fixed, that is, one end of the transmission spring 462 is fixed, but the inner cylinder 45 will continue to rotate with the slanted slider 461 and the other end of the transmission spring 462 located on the slanted slider 461. During this process, the transmission spring 462 is stretched. Then, when the slanted slider 461 drives the abutment block 47 from the first position... When the outer cylinder 44 moves from the first position to the second position, the outer cylinder 44 is released from its fixed position, and the elastic potential energy of the transmission spring 462 is released, causing the outer cylinder 44 to rotate at a relatively high speed until the next first locking part 441 engages with the second locking part 471, and the outer cylinder 44 is locked again. Then the above process is repeated. In this process, since the rotation of the outer cylinder 44 is driven by the transmission spring 462, when the outer cylinder 44 is released from its restriction and begins to rotate, the rotation speed of the outer cylinder 44 must be greater than the rotation speed of the inner cylinder 45. Therefore, the speed of switching the loading core 2 is fast.

[0037] It should be noted that in the above embodiment, multiple abutment blocks 47 and a first engaging portion 441 on the outer cylinder 44 are used to achieve the above technical solution. In another embodiment of the present invention, a single abutment block 47 and multiple first engaging portions 441 corresponding to the number of material cores 2 and multiple transmission components 46 on the outer cylinder 44 can also achieve the above technical solution, and the present invention does not limit this. In addition, it should be noted that the purpose of setting multiple material cores 2 is to ensure that when the first engaging portion 441 and the second engaging portion 471 cooperate to stop the outer cylinder 44 from rotating, the rotation angle of the outer cylinder 44 is just enough to make the next material core 2 rotate to the discharge position.

[0038] Please see Figure 5 Since the abutment block 47 is installed on the inner side of the outer casing 1 using an elastic member 48, and the engagement of the first locking part 441 and the second locking part 471 depends on the elastic member 48 driving the abutment block 47 towards the outer cylinder 44, it is difficult to avoid wear between the first locking part 441 and the second locking part 471 due to frequent collisions during this process. Therefore, in order to reduce this wear, in the embodiment of the present invention, the first locking part 441 includes a locking groove 4411, and the second locking part 471 includes a locking block 47. 11. The snap-fit ​​groove 4411 includes an adjacent mating surface 44111 and an anti-rotation surface 44112. The mating surface 44111 includes a smooth arc surface or an inclined surface. The anti-rotation surface 44112 extends radially along the outer cylinder 44 so that during the engagement of the snap-fit ​​groove 44111 and the snap-fit ​​block 4711, the mating surface 44111 and the anti-rotation surface 44112 successively engage with the second snap-fit ​​portion 471. When the anti-rotation surface 44112 engages with the snap-fit ​​block 4711, the outer cylinder 44 stops rotating. In other words, when the outer cylinder 44 rotates to engage with the first locking part 441 and the second locking part 471, the locking block 4711 will first engage with the smooth mating surface 44111, reducing the radial impact force of the locking block 4711 on the locking groove 4411. Then, the locking block 4711 engages with the anti-rotation surface 44112, and the outer cylinder 44 stops rotating. Since the anti-rotation surface 44112 extends radially, it increases the circumferential contact area of ​​the outer cylinder 44, thereby reducing the wear when the locking block 4711 and the locking groove 4411 engage with each other.

[0039] In an embodiment of the present invention, the abutment block 47 is provided with an elongated hole 472 extending radially along the inner cylinder 45, and the extrusion rod 3 passes through the elongated hole 472. That is, by passing the extrusion rod 3 through the interior of the abutment block 47, the volume of the barrel structure 100 is further reduced, and the elongated hole 472 on the abutment block 47 avoids interference between the abutment block 47 and the extrusion rod 3 when the abutment block 47 moves radially along the inner cylinder 45.

[0040] Please see Figures 6 to 7 The present invention also proposes a multifunctional food 3D printer 200, which includes a mounting base 201, a printing platform 202, support ribs and a material cylinder structure 100. The specific structure of the material cylinder structure 100 is as described in the above embodiments. Since the multifunctional food 3D printer 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0041] The printing platform 202 is movably mounted on the mounting base 201 in a horizontal direction; the lower end of the support frame 203 is rotatably mounted on the mounting base 201, so that during its rotation stroke, it has a working position above the printing platform 202 and a storage position that fits against the mounting base 201; the material cylinder structure 100 is movably and detachably disposed on the support frame 203, the material cylinder structure 100 has a material cavity, and the lower end of the material cylinder structure 100 is provided with a discharge port communicating with the material cavity. When the support frame 203 is in the working position, the discharge port is disposed corresponding to the printing platform 202, so as to extrude the material in the material cavity through the discharge port onto the printing platform 202.

[0042] In the technical solution of the present invention, by detachably mounting the material cylinder structure 100 on the support frame 203, the support frame 203 can fit against the printing platform 202, making the multifunctional food 3D printer 200 easy to store. Specifically, when the multifunctional food 3D printer 200 needs to be stored, the material cylinder structure 100 is first removed from the support frame 203 to prevent the material cylinder structure 100 from interfering with the printing platform 202 or the mounting base 201 during the subsequent storage process. Then, the support frame 203 is rotated to fit against the printing platform 202, thereby reducing the volume of the multifunctional food 3D printer 200 when stored.

[0043] Please refer to further information. Figures 8 to 11To enable the rotation of the support frame 203, in this embodiment of the invention, the multifunctional food 3D printer 200 further includes a rotating structure 204 and a first driving device 205. The rotating structure 204 includes a rotating block 2041, which is rotatably mounted on opposite ends of the mounting base 201 along a second horizontal axis. The upper end of the rotating block 2041 is fixedly connected to the lower end of the support frame 203. The first driving device 205 drives the rotating block 2041 to rotate, thereby driving the support frame 203 to either a working position or a storage position. In other words, by driving the rotating block 2041 to rotate via the first driving device 205, the support frame 203 located on the rotating block 2041 rotates, allowing the support frame 203 to move back and forth between the working position and the storage position.

[0044] To further drive the rotation of the rotating block 2041, in an embodiment of the present invention, the first driving device 205 includes a first motor 2051, which is located at one end of the mounting base 201 in a first horizontal direction; the mounting base 201 is provided with guide grooves 2011 on both opposite sides in a second horizontal direction, each guide groove 2011 including a first guide section 20111, a second guide section 20112, and a bent section 20113 connected together, the first guide section 20111 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the first horizontal direction, the second guide section 20112 extending along the second ... Segment 20112 is located below the first guide segment 20111. The second guide segment 20112 extends vertically and is positioned corresponding to the end of the first guide segment 20111 away from the first motor 2051. The bent segment 20113 smoothly connects the end of the first guide segment 20111 away from the first motor 2051 and the upper end of the second guide segment 20112. The rotating structure 204 also includes a guide block 2042, which extends horizontally. The guide block 2042 is provided with a rotating shaft 20421 extending along a second horizontal direction away from the mounting base 201. The rotating shaft 20421 is fixedly connected to the rotating block 2041. The guide block 2042 has a sliding end 20422 and a rotating end 20423 disposed opposite to each other in a first horizontal direction. The sliding end 20422 is movably mounted in the guide groove 2011. During the movement of the guide block 2042, both the sliding end 20422 and the rotating end 20423 are located in the first guide section 201. The first position of 11 and the sliding end 20422 are located in the second guide section 20112 and the rotating end 20423 is located in the second position of the first guide section 20111; wherein, the rotating shaft 20421 is arranged corresponding to the sliding end 20422, the first motor 2051 is used to drive the guide block 2042 to move, when the guide block 2042 is located in the first position, the support frame 203 is located in the working position, and when the guide block 2042 is located in the second position, the support frame 203 is located in the storage position.

[0045] In the above embodiment, since the rotating block 2041 is fixedly connected to the rotating shaft 20421 on the guide block 2042, the rotating block 2041 can rotate with the rotation of the rotating shaft 20421, that is, rotate with the rotation of the guide block 2042. Specifically, the guide block 2042 is installed in the guide groove 2011. When the guide block 2042 is in the first position, the guide block 2042 extends along the first horizontal direction. At this time, the support frame 203 is in the working position. When the guide block 2042 moves to the second position, the guide block 2042 extends along the vertical direction. That is, compared with the first position, the guide block 2042 has rotated 90°, thus driving the rotating shaft 20421 to rotate synchronously by 90°, further driving the rotating block 2041 to rotate by 90°, and finally causing the support frame 203 to change from the working position to the storage position.

[0046] It should be noted that the second guide segment 20112 is located below the first guide segment 20111 to control the storage position of the support frame 203 at the end of the mounting base 201 relative to the first motor 2051. This ensures that the support frame 203 will not interfere with the first motor 2051 when in the storage position, maximizing space utilization. Furthermore, the present invention does not limit the location of the second guide segment 20112, as long as it allows the support beam to rotate away from the first motor 2051. In other embodiments of the present invention, the second guide segment 20112 is located above the first guide segment 20111, extends vertically, and is positioned corresponding to the end of the first guide segment 20111 closest to the first motor 2051. In this embodiment, the support beam can also rotate away from the first motor 2051.

[0047] In order to drive the guide block 2042 from the first position to the second position, in an embodiment of the present invention, the first motor 2051 is disposed on the side of the guide groove 2011; the first driving device 205 further includes a first threaded rod 2052 and a first slider 2053, the first threaded rod 2052 extends along a first horizontal direction and is drivenly connected to the first motor 2051; the first slider 2053 is sleeved on the first threaded rod 2052 to be able to move along the first horizontal direction, and the first slider 2053 is provided with a through hole extending along a second horizontal direction, the through hole being used to sleeve the rotating shaft 20421 to be able to drive the rotating shaft 20421 to move along the first horizontal direction. In other words, the first slider 2053 pushes the rotating shaft 20421 to move along the first horizontal direction to drive the movement of the guide block 2042. During this process, since the rotating shaft 20421 is set to correspond to the sliding end 20422, it can drive the sliding end 20422 to move along the first guide section 20111. During this process, the rotating end 20423 will pass through the bending section 20113 and enter the second guide section 20112, thereby causing a positional deviation from the sliding end 20422 in the vertical direction, which ultimately causes the guide block 2042 to rotate 90°, that is, the support frame 203 changes from the working position to the storage position.

[0048] It should be noted that when the support frame 203 is in the storage position, that is, when the guide block 2042 is in the second position, the guide block 2042 is in a state of extending in the vertical direction. It is difficult to drive the guide block 2042 by relying solely on the first driving device 205 to drive the first slider 2053 to move in the first horizontal direction, which may lead to the risk of jamming. In order to prevent this from happening, in the embodiment of the present invention, the multifunctional food 3D printer 200 further includes a second driving device 206. The second driving device 206 further includes a second motor 2061, a transmission rod 2062 and a connecting rod 2063. The second motor 2061 is located on the side of the mounting base 201 relative to the first motor 2051. The transmission rod 2062 is connected to the output shaft of the second motor 2061 so that it can be driven to rotate by the second motor 2061. One end of the connecting rod 2063 is hinged to the connecting rod 2063, and the other end is hinged to the support frame 203. The second driving device 206 and the first driving device 205 jointly drive the support frame 203 to move. In other words, by driving the support frame 203 in the storage position through the second drive device 206, the risk of jamming that may occur if only the first drive device 205 is relied upon is prevented. Correspondingly, for the second drive device 206, during the rotation of the support frame 203, the connecting rod 2063 and the transmission rod 2062 may become collinear. In this case, if only the second drive device 206 continues to drive, it may cause damage to the relevant components. However, at this time, the first drive device 205 can drive the support frame 203 to move, thereby avoiding the problem of possible damage to the second drive device 206.

[0049] It should be noted that the present invention does not limit the driving method of the printing platform 202. In the embodiments of the present invention, the multifunctional food 3D printer 200 further includes a third driving device 207. The third driving device 207 includes a third motor 2071, a first pulley 2072 structure, and a first slider 2053. The first pulley 2072 structure includes two first pulleys 2072 and a first belt 2073 sleeved on the outside of the two first pulleys 2072. The two first pulleys 2072 are located at opposite ends of the mounting base 201 along a first horizontal direction. One of the first pulleys 2072 is driven and connected to the third motor 2071. The first slider 2053 is fixed to the first belt 2073 and connected to the lower end of the printing platform 202. That is, the third motor 2071 drives the first pulley 2072 structure to move, and further drives the second slider 2074 to move, thereby driving the movement of the printing platform 202.

[0050] It should be noted that the present invention does not limit the driving method of the material cylinder structure 100. In the embodiments of the present invention, the material cylinder structure 100 is movably mounted on the support frame 203 along the second horizontal direction; the multifunctional food 3D printer 200 also includes a fourth driving device 208, the fourth driving device 208 including a slide rail 2081, a first driving part 2082 and a second driving part 2083, wherein the slide rail 2081 extends along the second horizontal direction and is movably mounted on the support frame 203, and the material cylinder structure 100 is detachably and movably mounted on the slide rail 2081 along the second horizontal direction; the first driving part 2082 is used to drive the slide rail 2081 to move up and down when the support frame 203 is in the working position; the second driving part 2083 is used to drive the material cylinder structure 100 to move along the slide rail 2081 along the second horizontal direction when the support frame 203 is in the working position. In other words, the first driving unit 2082 and the second driving unit 2083 enable the barrel structure 100 to move in the vertical direction and in the second horizontal direction. Furthermore, since the printing platform 202 can move along the first horizontal direction, it is equivalent to the barrel structure 100 being able to move relative to the printing platform 202 in the first horizontal direction, the second horizontal direction, and the vertical direction, which facilitates the barrel structure 100 extruding material into a specific shape on the printing platform 202.

[0051] In an embodiment of the present invention, the first driving unit 2082 includes a second threaded rod 20821, a third slider 20822, and a fourth motor 20823. The second threaded rod 20821 extends vertically onto the support frame 203. The third slider 20822 is threadedly connected to the second threaded rod 20821, allowing it to be driven by the second threaded rod 20821 to move vertically. The third slider 20822 is used to fixably connect to the slide rail 2081. The fourth motor 20823 is used to drive the second threaded rod 20821 to rotate. That is, by driving the third slider 20822 to move vertically via the fourth motor 20823, the vertical movement of the slide rail 2081 is driven, thereby controlling the vertical movement of the material cylinder structure 100. In another embodiment of the present invention, the second driving unit 2083 includes a fifth motor 20831, a second pulley 20832 structure, and a fourth slider 20834. The second pulley 20832 structure includes two second pulleys 20832 and a second belt 20833 sleeved on the outside of the two second pulleys 20832. The two second pulleys 20832 are located at opposite ends of the slide rail 2081 in the second horizontal direction. One of the second pulleys 20832 is driven and connected to the fifth motor 20831. The fourth slider 20834 is fixed to the second belt 20833 and is detachably connected to the barrel structure 100. That is, the fifth motor 20831 drives the second pulley 20832 structure to move, which in turn drives the fourth slider 20834 to move, thereby driving the barrel structure 100 to move along the second horizontal direction. It should be noted that the above solutions can be used selectively or simultaneously, and the present invention does not limit this.

[0052] It should be noted that, in the embodiments of the present invention, the multifunctional food 3D printer 200 has two states: a storage mode and a working mode. In the storage mode, the barrel structure 100 is detached from the support frame 203, and then the support frame 203 is rotated to fit against the mounting base 201, reducing the space occupied by the product and thus facilitating storage. In the working mode, the support frame 203 is first rotated and fixed above the printing platform 202, and then the barrel structure 100 is installed on the support frame 203. The printer can start working by inputting the corresponding commands on the control panel attached to the barrel structure 100. The functions and effects of the control panel attached to the barrel structure 100 can refer to conventional technical means, and the present invention does not limit them.

[0053] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A barrel structure, characterized in that, include: The outer shell is cylindrical in shape, extending vertically. A discharge port is provided at the lower end of the outer shell, and a discharge position is provided inside the outer shell, which is offset from the center line of the outer shell. Multiple feeding cores are evenly arranged along the circumference of the outer shell and are rotatably installed inside the outer shell with the center line of the outer shell as the rotation axis, so that they can move sequentially to the discharge position during their active stroke. When the feeding core is located at the discharge position, the lower end of the feeding core is connected to the discharge port. An extrusion rod extends in the vertical direction and is movably disposed in the housing. The extrusion rod is disposed corresponding to the discharge position and is used to expel the material in the loading core located at the discharge position from the discharge port. as well as, A drive device is used to drive the rotation of the loading core and to drive the extrusion rod to move in the up and down direction.

2. The barrel structure as described in claim 1, characterized in that, The driving device includes: A drive shaft, rotatably mounted inside the housing and movably disposed along the centerline of the housing in the vertical direction, is provided with a first mating portion and a second mating portion spaced apart in the vertical direction; and... A rotating disk is rotatably installed inside the housing. The axis of the rotating disk is coaxial with the center line of the housing. The rotating disk is provided with a plurality of through holes arranged at intervals along its circumference. Each through hole is used to install one of the loading cores. A first transmission part is provided in the middle of the rotating disk. The extrusion rod is provided with a second transmission part; During its vertical travel, the drive shaft can engage with the first transmission part to drive the rotating disk to rotate, or engage with the second transmission part to drive the pressing rod to rise and fall.

3. The barrel structure as described in claim 2, characterized in that, The second mating part includes a drive gear fixedly mounted on the drive shaft, and the second transmission part includes a fixed gear fixedly sleeved on the extrusion rod, wherein the movement of the fixed gear in the vertical direction is limited.

4. The barrel structure as described in claim 3, characterized in that, The drive device further includes a drive shaft extending in the vertical direction within the housing. Two drive gears are mounted on the drive shaft. One of the drive gears is used to mesh with the drive gear during the vertical movement of the drive shaft, while the other drive gear is always meshed with the fixed gear.

5. The barrel structure as described in claim 2, characterized in that, The drive device further includes: The outer cylinder is fixedly connected to the rotating disk, and the outer cylinder is provided with a first snap-fit ​​part; The inner cylinder is located inside the outer cylinder, and the upper end of the inner cylinder protrudes from the outer cylinder. The first transmission part is provided at the upper end of the inner cylinder. A transmission assembly is used to drive the outer cylinder and the inner cylinder to rotate the outer cylinder when the inner cylinder rotates a certain angle. The abutment block has a second locking part thereon. The abutment block is movably disposed inside the outer shell along the radial direction of the inner cylinder and is located outside the outer cylinder, so as to have a first position in which the second locking part cooperates with the first locking part to stop the rotation of the outer cylinder, and a second position in which the second locking part is separated from the outer cylinder to allow the outer cylinder to rotate. When the abutting block is in the first position, one of the filling cores is in the discharge position.

6. The barrel structure as described in claim 5, characterized in that, One of the first latching part and the second latching part is a latching groove, and the other is a latching block.

7. The barrel structure as described in claim 5, characterized in that, The number of abutment blocks corresponding to the number of filling cores is provided, and the abutment blocks are elastically installed on the inner side of the outer shell by elastic elements; The transmission assembly includes a slanted slider and a transmission spring. One end of the transmission spring is disposed on the slanted slider and the other end is disposed on the outer cylinder, so that when the slanted slider rotates at a certain angle, it drives the outer cylinder to rotate. One end of the slanted slider is fixed on the inner cylinder and the other end extends radially along the inner cylinder. The slanted slider has an inclined surface, which can cooperate with the inclined surface of the abutment block during the rotation of the slanted slider to drive the abutment block from the first position to the second position.

8. The barrel structure as described in claim 7, characterized in that, The first snap-fit ​​part includes a snap-fit ​​groove, and the second snap-fit ​​part includes a snap-fit ​​block. The snap-fit ​​groove includes an adjacent mating surface and an anti-rotation surface. The mating surface includes a smooth arc surface or an inclined surface. The anti-rotation surface extends radially along the outer cylinder so that during the engagement of the snap-fit ​​groove and the snap-fit ​​block, the mating surface and the anti-rotation surface engage with the second snap-fit ​​part sequentially. When the anti-rotation surface engages with the snap-fit ​​block, the outer cylinder stops rotating.

9. The barrel structure as described in claim 5, characterized in that, The abutment block has an elongated hole extending radially along the inner cylinder, and the extrusion rod passes through the elongated hole.

10. A multifunctional food 3D printer, characterized in that, Includes the barrel structure as described in any one of claims 1 to 9.

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