Ice cream machine and ice cream preparation method thereof

Abstract

The present invention discloses an ice cream machine and an ice cream preparation method thereof. The ice cream machine comprises: a base, a chassis, a stirring device and an extruding device; the stirring device comprises: a first driving mechanism, an outer cylinder, a cutter and an inner cylinder; the first driving mechanism is configured to connect the cutter and drive the cutter to rise and fall and rotate; an outlet structure is provided at the bottom of the inner cylinder, and the outlet structure is provided with a first piston structure; the extruding device comprises: a second driving mechanism; a second piston structure, which is provided on the second driving mechanism; the corresponding position of the second piston structure on the chassis is configured to connect the inner cylinder, and the second driving mechanism is configured to push the second piston structure so that the first piston structure is opened and the ice cream is extruded. In the present application, the connection between the first piston structure and the outlet structure is more flexible, and the first piston structure can be pushed open by the second piston structure. Even if the first piston structure is forgotten to be opened manually, it does not affect the opening of the first piston structure and the extrusion of ice cream.

Description

Technical Field

[0001] The invention relates to the technical field of ice cream preparation, in particular to an ice cream machine and an ice cream preparation method thereof. Background Art

[0002] When preparing ice cream, commercial ice cream machines usually prepare large quantities of ice cream in batches. It is necessary to first add ice cream ingredients according to the proportion of the entire batch of ice cream ingredients, then crush and stir the ice cream ingredients, and finally squeeze out the ice cream portion by portion and sell it according to each portion. The integrated ice cream machine integrates the crushing and stirring mechanism and the extrusion mechanism. The crushing and stirring mechanism crushes and stirs the ice cream ingredients to obtain ice cream; then the container containing the ice cream is loaded on the extrusion mechanism, the outlet of the container is opened, and the ice cream is squeezed out from the outlet through the extrusion mechanism.

[0003] In the prior art, when preparing ice cream, the ice cream machine needs to manually open the outlet of the container, which is cumbersome and inconvenient to operate.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, an ice cream machine and an ice cream preparation method thereof are provided, aiming to solve the problem in the prior art that the outlet of the container needs to be opened manually when preparing ice cream, which is cumbersome and inconvenient to operate.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] An ice cream machine, comprising: a base, a chassis, a stirring device and an extruding device; the chassis is arranged on the base;

[0008] The stirring device comprises:

[0009] A first driving mechanism, disposed on the chassis;

[0010] The outer cylinder is placed on the base;

[0011] A cutter, arranged on the outer cylinder;

[0012] An inner cylinder, located inside the outer cylinder;

[0013] Wherein, the first driving mechanism is configured to connect the tool and drive the tool to rise, fall and rotate;

[0014] The bottom of the inner cylinder is provided with an outlet structure, and the outlet structure is provided with a first piston structure;

[0015] The extrusion device comprises:

[0016] A second driving mechanism is disposed on the chassis;

[0017] a second piston structure, disposed on the second driving mechanism;

[0018] Wherein, the corresponding position of the second piston structure on the chassis is configured to be connected to the inner cylinder, and the second driving mechanism is configured to push the second piston structure to open the first piston structure.

[0019] The ice cream machine, wherein a through hole is formed at the bottom of the inner cylinder; the outlet structure comprises:

[0020] A first cylinder, arranged around the through hole;

[0021] A second cylinder surrounding the first cylinder;

[0022] a passage, disposed in the first cylinder and passing through the second cylinder;

[0023] Wherein, the second cylinder is provided with an inclined groove;

[0024] The first piston structure comprises:

[0025] A cover body, sleeved outside the second cylinder;

[0026] A limit block is arranged on the inner side wall of the cover body and is inserted into the inclined groove and slides in the inclined groove;

[0027] A first plug body is disposed at the inner bottom of the cover body and is inserted into the first cylinder to seal the through hole;

[0028] Wherein, when the second driving mechanism pushes the second piston structure, the limit block slides in the inclined groove and drives the first plug body to open the through hole;

[0029] The second driving mechanism comprises:

[0030] A driving driver is arranged in the chassis;

[0031] A second transmission assembly connected to the output shaft of the push driver;

[0032] A lead screw connected to the second transmission assembly;

[0033] A push rod is connected with the lead screw.

[0034] The ice cream machine, wherein the second cylinder is further provided with a first flat groove, the first flat groove is connected to one end of the inclined groove close to the through hole, and the limit block slides in the first flat groove;

[0035] The second cylinder is also provided with a second flat groove, which is connected to an end of the inclined groove away from the through hole; the limiting block slides in the second flat groove.

[0036] The ice cream machine, wherein the first driving mechanism comprises:

[0037] A rotation driver is arranged in the chassis;

[0038] A first transmission assembly connected to the output shaft of the rotary driver;

[0039] A movable shaft connected to the first transmission assembly and to the tool;

[0040] A lifting assembly connected to the movable shaft;

[0041] A lifting driver connected to the lifting assembly;

[0042] The rotation speed sensor of the movable shaft and the lifting speed sensor of the movable shaft are both arranged on the chassis.

[0043] The ice cream machine, wherein the end surface of the push rod forms a groove;

[0044] The second piston structure comprises:

[0045] A second plug body is clamped to the push rod, and a vent hole is formed in the second plug body corresponding to the groove position;

[0046] A support ring, arranged on the second plug body and surrounding the vent hole;

[0047] A sealing member, disposed on the vent hole;

[0048] The support ring comprises:

[0049] Ring Department;

[0050] A plurality of connecting parts and a plurality of embedding parts are all arranged on a side of the annular part facing the push rod;

[0051] The second plug body comprises:

[0052] A main body portion connected to the connecting portion;

[0053] A barrel portion, disposed on the main body portion;

[0054] Wherein, the embedding portion is embedded in the barrel portion;

[0055] The inner wall of the cylinder is circular, and the outer wall of the cylinder is non-circular;

[0056] The chassis is provided with a support ring, the support ring is sleeved outside the push rod and the cylinder, and the support ring is provided with a guide protrusion;

[0057] The push rod is provided with a slot;

[0058] The inner side wall of the barrel is provided with a locking protrusion, and the locking protrusion is locked into the locking groove;

[0059] The outer side wall of the barrel is provided with an extrusion protrusion, the position of the extrusion protrusion corresponds to the position of the clamping protrusion, and both are located between two adjacent embedded parts;

[0060] The guide protrusion guides the pressing protrusion so that the pressing protrusion presses the clamping protrusion.

[0061] An ice cream preparation method for an ice cream machine, wherein the ice cream preparation method comprises:

[0062] After opening the outer cylinder, placing the ice cream raw materials in the inner cylinder, closing the outer cylinder, and connecting the first driving mechanism and the cutter;

[0063] Starting the first driving mechanism to drive the cutter to rise and fall and rotate, so that the ice cream raw material forms ice cream;

[0064] After opening the outer cylinder, the inner cylinder containing the ice cream is taken out and connected to the corresponding position of the second piston structure on the chassis;

[0065] The second driving mechanism is started to push the second piston structure to open the first piston structure and squeeze out the ice cream.

[0066] The ice cream making method of the ice cream machine, wherein the second driving mechanism is started to push the second piston structure to open the first piston structure and squeeze out the ice cream, comprises:

[0067] Start the pushing drive to drive the screw of the lead screw to rotate and the speed of the screw is a first preset screw speed, and after a preset time, control the pushing drive to adjust the speed of the screw to a second preset screw speed; wherein the first preset screw speed is greater than the second preset screw speed.

[0068] The ice cream making method of the ice cream machine, wherein the ice cream making method further comprises:

[0069] When the required number of ice creams are squeezed out, the cover body is rotated to close the first piston structure and unlock it; wherein, when the first piston structure is closed and unlocked, the limit block is located at one end of the inclined groove close to the first flat groove;

[0070] When the extrusion of ice cream is paused, the cover body is rotated to close and lock the first piston structure; wherein, when the first piston structure is closed and locked, the limit block slides in the inclined groove to the first flat groove;

[0071] When the cover is rotated to open and lock the first piston structure, the second driving mechanism is started to push the second piston structure to squeeze out the ice cream; wherein, when the first piston structure is opened and locked, the limit block slides in the inclined groove to the second flat groove.

[0072] The ice cream making method of the ice cream machine, wherein the starting of the first driving mechanism to drive the cutter to rise and fall and rotate so that the ice cream raw material forms ice cream, comprises:

[0073] The rotary drive and the lifting drive are simultaneously activated so that the tool is rotated and the lifting assembly is lowered.

[0074] The ice cream making method of the ice cream machine, wherein the first driving mechanism is started to drive the cutter to rise and fall and rotate to form the ice cream, further comprising:

[0075] Acquiring a real-time rotation speed of the movable shaft based on a rotation speed sensor, and acquiring a real-time lifting speed of the movable shaft based on a lifting speed sensor;

[0076] When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, controlling the rotation driver to reduce the real-time rotation speed to the first preset rotation speed, and controlling the lifting driver to reduce the real-time lifting speed to the first preset lifting speed;

[0077] When the real-time rotation speed is less than the second preset rotation speed and the real-time lifting speed is less than the second preset lifting speed, the rotation driver is controlled to increase the real-time rotation speed to the second preset rotation speed, and the lifting driver is controlled to increase the real-time lifting speed to the second preset lifting speed; wherein the first preset rotation speed is greater than the second preset rotation speed, and the first preset lifting speed is greater than the second preset lifting speed;

[0078] When the real-time rotation speed is less than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, controlling the rotation driver to adjust the real-time rotation speed to the second preset rotation speed, and controlling the lifting driver to reduce the real-time lifting speed to the first preset lifting speed;

[0079] When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is less than the first preset lifting speed, the rotation driver is controlled to reduce the real-time rotation speed to the first preset rotation speed, and the lifting driver is controlled to adjust the real-time lifting speed to the second preset lifting speed.

[0080] Beneficial effect: In the present application, the connection between the first piston structure and the outlet structure is more flexible, and the first piston structure can be pushed open by the second piston structure. Even if the first piston structure is forgotten to be opened manually, it does not affect the opening of the first piston structure and the squeezing of ice cream, and the operation is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 It is a front view of an ice cream machine in an embodiment of the present invention.

[0082] Figure 2 It is a three-dimensional diagram of an ice cream machine in an embodiment of the present invention.

[0083] Figure 3 1 is a first cross-sectional view of an ice cream machine in an embodiment of the present invention.

[0084] Figure 4 Schematic diagram of the internal structure of an ice cream machine in an embodiment of the present invention.

[0085] Figure 5 1 is an exploded view of the outer cylinder in the embodiment of the present invention.

[0086] Figure 6 It is a cross-sectional view of the outer cylinder and the inner cylinder in the embodiment of the present invention.

[0087] Figure 7 It is a schematic structural diagram of the inner cylinder in an embodiment of the present invention.

[0088] Figure 8 It is a structural schematic diagram of the inner cylinder and the first piston structure in an embodiment of the present invention.

[0089] Fig. 9 It is a first structural schematic diagram of the inner cylinder and the outlet structure in an embodiment of the present invention.

[0090] Fig.10 1 is a second structural schematic diagram of the inner cylinder and the outlet structure in an embodiment of the present invention.

[0091] Fig.11 Schematic diagram of the structure of the first piston in an embodiment of the present invention.

[0092] Fig.12 It is a cross-sectional view of the first piston structure in an embodiment of the present invention.

[0093] Fig.13 2 is a second cross-sectional view of the ice cream machine in the embodiment of the present invention.

[0094] Fig.14 Schematic diagram of the structure of the extrusion device in the embodiment of the present invention.

[0095] Fig.15 2 is a cross-sectional view of an extrusion device in an embodiment of the present invention.

[0096] Fig.16 It is a cross-sectional view of the second plug body and the support ring in an embodiment of the present invention.

[0097] Fig.17 It is a schematic structural diagram of a support ring and a push rod in an embodiment of the present invention.

[0098] Fig.18 2 is a schematic diagram of the structure of the push rod in an embodiment of the present invention.

[0099] Fig.19 It is a schematic structural diagram of the second plug body in an embodiment of the present invention.

[0100] Fig. 20 It is a first cross-sectional view of the second plug body in the embodiment of the present invention.

[0101] Fig.21 4 is a second cross-sectional view of the second plug body in the embodiment of the present invention.

[0102] Description of reference numerals:

[0103] 10. base; 20. chassis; 21. opening; 22. protective cover; 23. support ring; 231. guide protrusion; 30. stirring device; 31. first driving mechanism; 311. rotating driver; 312. first transmission assembly; 313. movable shaft; 314. lifting assembly; 315. lifting driver; 32. outer cylinder; 33. tool; 34. inner cylinder; 341. through hole; 342. first identification part; 35. outlet structure; 351. first cylinder; 352. second cylinder; 3521. inclined groove; 3522. first flat groove; 3523. second flat groove; 353. channel; 36. first piston structure; 361. cover body; 3611. notch; 3612. second identification part; 362. stopper; 363. first plug body; 3631. decorative part; 36 32. snap-on plug; 3a. snap-on portion; 3a1. first main body; 3a2. flange; 3a3. first snap buckle; 3a4. support cylinder; 3b. plug portion; 3b1. center portion; 3b2. wrapping portion; 3b3. extension portion; 364. third cylinder; 365. support frame; 40. extrusion device; 41. second drive mechanism; 411. push driver; 412. second transmission assembly; 413. lead screw; 414. push rod; 4141. groove; 4142. slot; 42. second piston structure; 421. second plug body; 4211. vent hole; 4212. main body; 4213. cylinder; 4214. snap convex; 4215. extrusion convex; 422. support member; 4221. annular portion; 4222. connecting portion; 4223. embedding portion; 423. closure member. DETAILED DESCRIPTION

[0104] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0105] Please also see Figure 1-Figure 21 , the present invention provides some embodiments of an ice cream machine.

[0106] like Figure 1-Figure 3As shown, the ice cream machine of the present invention comprises: a base 10, a case 20, a stirring device 30 and an extruding device 40; the case 20 is arranged on the base 10; the stirring device 30 is arranged on the base 10 and the case 20, and the extruding device 40 is arranged on the case 20, and the extruding device 40 can be located at a higher position of the case 20 so that the extruded ice cream can be received by a container. The stirring device 30 is used to stir the ice cream raw materials and form ice cream, and the extruding device 40 is used to extrude the ice cream. If there are many ice cream raw materials, more ice cream can be formed at one time by the stirring device 30, and multiple portions of ice cream can be extruded by the extruding device 40. The ice cream raw materials can include ice cubes, milk, milk powder, cream, edible sugar, salt, additives, etc.

[0107] The stirring device 30 comprises:

[0108] A first driving mechanism 31 is disposed in the chassis 20;

[0109] The outer cylinder 32 is placed on the base 10;

[0110] A cutter 33 is disposed on the outer cylinder 32;

[0111] An inner cylinder 34, located inside the outer cylinder 32;

[0112] The first driving mechanism 31 is configured to connect the tool 33 and drive the tool 33 to rise, fall and rotate. The bottom of the inner cylinder 34 is provided with an outlet structure 35 , and the outlet structure 35 is provided with a first piston structure 36 .

[0113] Specifically, the inner cylinder 34 is used to load the ice cream raw materials and the ice cream formed by the ice cream raw materials. The inner cylinder 34 is assembled in the outer cylinder 32. The outer cylinder 32 includes a cylinder cover and a cylinder body. The cylinder cover and the cylinder body are detachably connected. After opening the cylinder cover, the inner cylinder 34 is placed in the cylinder body, or the inner cylinder 34 in the cylinder body is taken out. Figure 3 and Figure 5 As shown, the first drive mechanism 31 is detachably connected to the cutter 33 and is used to drive the cutter 33 to rise and fall and rotate. The rise and fall and rotation of the cutter 33 can be performed simultaneously. The cutter 33 is detachably mounted on the outer cylinder 32 and rotates relative to the outer cylinder 32. Specifically, it is mounted on the cylinder cover of the outer cylinder 32. After the first drive mechanism 31 is connected to the cutter 33, the cutter 33 and the outer cylinder 32 can be separated. The cutter 33 has the functions of stirring and cutting the ice cream raw materials. The ice cream raw materials are crushed by cutting and mixed by stirring.

[0114] The extrusion device 40 comprises:

[0115] A second driving mechanism 41 is disposed on the chassis 20;

[0116] A second piston structure 42, disposed on the second driving mechanism 41;

[0117] The corresponding position of the second piston structure 42 on the chassis 20 is configured to be connected to the inner cylinder 34 , and the second driving mechanism 41 is configured to push the second piston structure 42 to open the first piston structure 36 .

[0118] Specifically, Figure 1 and Figure 2 As shown, an opening 21 is formed at a corresponding position of the second piston structure 42 on the case 20, and the opening 21 allows the second piston structure 42 to pass through, and the opening 21 is detachably connected to the inner cylinder 34. A protective cover 22 can be configured at the opening 21 to protect the second piston structure 42. When the inner cylinder 34 is assembled at the opening 21, the protective cover 22 at the opening 21 can be removed first, and then the inner cylinder 34 is assembled. After the ice cream raw materials form ice cream, the inner cylinder 34 is taken out and connected to the corresponding position of the second piston structure 42 on the case 20. The second driving mechanism 41 is used to push the second piston structure 42 into the inner cylinder 34. After the air pressure in the inner cylinder 34 increases, the first piston structure 36 is pushed open, and the ice cream in the inner cylinder 34 is squeezed out from the outlet structure 35. The first piston structure 36 is movably connected to the outlet structure 35, and the first piston structure 36 can be indirectly pushed open under the push of the second piston structure 42. When the inner cylinder 34 is assembled in the outer cylinder 32 , under the action of the gravity of the inner cylinder 34 , the first piston structure 36 and the outlet structure 35 are closed, and the ice cream will not leak out of the outlet structure 35 .

[0119] In the present application, the connection between the first piston structure 36 and the outlet structure 35 is relatively flexible, and the first piston structure 36 can be pushed open by the second piston structure 42. Even if the first piston structure 36 is forgotten to be opened manually, it does not affect the opening of the first piston structure 36 and the extrusion of the ice cream. When the air pressure in the inner cylinder 34 is increased, it is also beneficial to expel the large-pore foam in the ice cream, making the foam of the ice cream more delicate.

[0120] In a preferred implementation of the embodiment of the present invention, Figure 6 , Figure 8-Figure 10 As shown, a through hole 341 is formed at the bottom of the inner cylinder 34 .

[0121] Specifically, a through hole 341 is formed at the bottom of the inner cylinder 34 for the ice cream to pass through. The through hole 341 may be circular. The inner cylinder 34 may be a circular cylinder, and the second piston structure 42 may slide in the inner cylinder 34, and the second piston structure 42 is sealed with the side wall of the inner cylinder 34, so that the ice cream in the inner cylinder 34 can only be discharged from the through hole 341. The second piston structure 42 may move to the bottom of the inner cylinder 34, and the surface of the second piston structure 42 cooperates with the bottom of the inner cylinder 34, and the gap between the two is small, so that as much ice cream as possible can be discharged.

[0122] In a preferred implementation of the embodiment of the present invention, Figure 6-Figure 10 As shown, the outlet structure 35 includes:

[0123] A first cylinder 351 is arranged around the through hole 341;

[0124] A second cylinder 352, surrounding the first cylinder 351;

[0125] The channel 353 is provided in the first cylinder 351 and passes through the second cylinder 352 .

[0126] Specifically, the first cylinder 351 and the second cylinder 352 are both located outside the inner cylinder 34, the first cylinder 351 surrounds the outside of the through hole 341, and the second cylinder 352 surrounds the outside of the first cylinder 351. The channel 353 penetrates the first cylinder 351 and the second cylinder 352, and the ice cream discharged from the through hole 341 enters the first cylinder 351 and then is discharged through the channel 353. The first piston structure 36 is movably connected to the second cylinder 352 and seals the through hole 341.

[0127] In a preferred implementation of the embodiment of the present invention, Fig. 9 As shown, the second cylinder 352 is provided with an inclined groove 3521; the first piston structure 36 includes:

[0128] A cover 361 is sleeved outside the second cylinder 352;

[0129] The limiting block 362 is disposed on the inner wall of the cover body 361 and is inserted into the inclined groove 3521 and slides in the inclined groove 3521;

[0130] The first plug 363 is disposed at the inner bottom of the cover 361 and is inserted into the first cylinder 351 to seal the through hole 341 .

[0131] Specifically, the cover 361 covers the second cylinder 352, and a notch 3611 is provided on the cover 361, and the notch 3611 avoids the passage 353. The first plug 363 is inserted into the first cylinder 351 and seals the through hole 341. When the limit block 362 slides in the inclined groove 3521, the cover 361 moves relative to the second cylinder 352 and the first plug 363 moves relative to the first cylinder 351, and the movement trajectory of the cover 361 and the movement trajectory of the first plug 363 are both extension trajectories of the inclined groove 3521. With the inclined groove 3521, the movement of the first plug 363 is a composite movement of moving away from the inner cylinder 34 and rotating relative to the first cylinder 351, which is conducive to reducing the sliding friction between the first plug 363 and the first cylinder 351, and facilitating the opening of the first plug 363.

[0132] The inclined groove 3521 is inclined relative to the axial direction of the first cylinder 351 . The inclined groove 3521 is substantially in the shape of a spiral curve. The inclined groove 3521 may also be an inclined hole.

[0133] In a preferred implementation of the embodiment of the present invention, Fig. 9 and Fig.11 As shown, a first flat groove 3522 is further provided on the second cylinder 352 . The first flat groove 3522 is connected to one end of the inclined groove 3521 close to the through hole 341 . The limiting block 362 slides in the first flat groove 3522 .

[0134] Specifically, the limit block 362 is in the shape of an elongated strip, and the limit block in the shape of an elongated strip extends in the horizontal direction. The limit block 362 can move to the first flat groove 3522. The first flat groove 3522 extends in the horizontal direction. For example, the first flat groove 3522 is located at one end of the inclined groove 3521 close to the inner cylinder 34. When the limit block 362 moves into the first flat groove 3522, the first plug body 363 seals the through hole 341, and the second driving mechanism 41 pushes the second piston structure 42 but cannot push the first piston structure 36 to rotate horizontally to open the outlet structure 35, so the first piston structure 36 is in a closed and locked state. When the limit block 362 is located at a position where the inclined groove 3521 is close to the first flat groove 3522, when the second piston structure 42 moves, the first piston structure 36 can be pushed open, and the first piston structure 36 is not locked, and the first piston structure 36 is in a closed and unlocked state.

[0135] In a preferred implementation of the embodiment of the present invention, Fig. 9 and Fig.11 As shown, a second flat groove 3523 is further provided on the second cylinder 352 , and the second flat groove 3523 is connected to one end of the inclined groove 3521 away from the through hole 341 ; the limiting block 362 slides in the second flat groove 3523 .

[0136] Specifically, the stopper 362 can move to the second flat groove 3523. The second flat groove 3523 extends in the horizontal direction. The second flat groove 3523 is located at the end of the inclined groove 3521 away from the inner cylinder 34. When the stopper 362 moves into the second flat groove 3523, the second plug body 421 is away from the through hole 341, the outlet structure 35 is fully opened, and the first piston structure 36 is in an open and locked state. When the stopper 362 is located at a position where the inclined groove 3521 is close to the second flat groove 3523, the first piston structure 36 is in an open and unlocked state.

[0137] A first identification portion 342 is provided on the outer side of the inner cylinder 34, and a second identification portion 3612 is provided on the cover body 361. The first identification portion 342 and the second identification portion 3612 are used to identify the open state, closed state and locked state of the first piston structure 36. When the first identification portion 342 and the second identification portion 3612 are close to each other, the first piston structure 36 is in a closed and locked state; when the first identification portion 342 and the second identification portion 3612 are staggered in the horizontal direction, the first piston structure 36 is in a closed and unlocked state; when the first identification portion 342 and the second identification portion 3612 are staggered in the horizontal direction and separated in the vertical direction, the first piston structure 36 is in an open state.

[0138] In a preferred implementation of the embodiment of the present invention, Figure 8 , Fig. 9 , Fig.11 as well as Fig.12 As shown, a third cylinder 364 is disposed at the bottom of the cover body 361 and is inserted into the first cylinder 351 . A support frame 365 is disposed in the third cylinder 364 .

[0139] Specifically, the third cylinder 364 slides and rotates in the first cylinder 351 , and the support frame 365 is used to support the first plug body 363 .

[0140] In a preferred implementation of the embodiment of the present invention, Figure 7 , Figure 8 as well as Fig.12 As shown, the first plug body 363 includes:

[0141] The decorative member 3631 is clamped to the third cylinder 364 and the support frame 365 and is located outside the support frame 365;

[0142] The card plug 3632 is adsorbed on the third cylinder 364 and the support frame 365 and is located on the inner side of the support frame 365 .

[0143] Specifically, the snap-on plug 3632 includes: a snap-on portion 3a and a plug portion 3b, wherein the plug portion 3b is wrapped outside the snap-on portion 3a, and the plug portion 3b is made of a flexible material and can be deformed, thereby having better sealing performance. The decorative member 3631 is snap-on to the outer side of the support frame 365, and the snap-on plug 3632 is snap-on to the inner side of the support frame 365.

[0144] The clamping portion 3a includes:

[0145] First body 3a1;

[0146] A flange 3a2, provided on the first body 3a1;

[0147] A first buckle 3a3, disposed on the first body 3a1 and snapped onto an edge of the support frame 365;

[0148] The support tube 3a4 is disposed on the first main body 3a1 and supported by the support frame 365.

[0149] The plug portion 3b comprises:

[0150] The central portion 3b1 abuts against the first main body 3a1 and is located in the through hole 341;

[0151] A wrapping portion 3b2, surrounding the central portion 3b1 and wrapping the flange 3a2;

[0152] The extension portion 3b3 surrounds the wrapping portion 3b2 and is located between the first buckle 3a3 and the third cylinder 364 .

[0153] Specifically, the first body 3a1 and the flange 3a2 form a step, and the central portion 3b1 forms a circular protrusion, which is inserted into the through hole 341 to seal the through hole 341. The upper and lower parts of the wrapping portion 3b2 respectively abut against the edge of the through hole 341 and the third cylinder 364, and annular protrusions can be provided on the upper and lower parts of the wrapping portion 3b2 to further improve the sealing effect.

[0154] In a preferred implementation of the embodiment of the present invention, Figure 15-18 As shown, a groove 4141 is formed on the end surface of the push rod 414 of the second driving mechanism 41 .

[0155] Specifically, the second driving mechanism 41 has a push rod 414 for pushing the second piston structure 42. The end surface of the push rod 414 forms a groove 4141, which connects the second piston structure 42 with the push rod 414.

[0156] In a preferred implementation of the embodiment of the present invention, Figure 14-16 as well as Fig.21 As shown, the second piston structure 42 includes:

[0157] A second plug body 421 is sleeved on the end of the push rod 414 , and a vent hole 4211 is formed at the position of the second plug body 421 corresponding to the groove 4141 ;

[0158] A support member 422 is provided on the second plug body 421 and is arranged around the vent hole 4211;

[0159] The sealing member 423 is disposed on the vent hole 4211 .

[0160] Specifically, the second plug body 421 is sleeved outside the end of the push rod 414 and is engaged with the end of the push rod 414. When the second plug body 421 is sleeved on the end of the push rod 414, the closing piece 423 is opened, and the vent hole 4211 can remove the air between the second plug body 421 and the end of the push rod 414, which is conducive to the sleeve of the second plug body 421 on the end of the push rod 414. After the second plug body 421 is sleeved on the end of the push rod 414, the closing piece 423 closes the vent hole 4211, and a closed space is formed between the second plug body 421, the push rod 414 and the closing piece 423. Even if the second plug body 421 is disengaged from the push rod 414, the second plug body 421 is not easy to be removed from the end of the push rod 414. The closing piece 423 needs to open the vent hole 4211 so that the second plug body 421 can be easily removed from the end of the push rod 414.

[0161] In a preferred implementation of the embodiment of the present invention, Fig.16 , Fig.19 , Fig. 20 as well as Fig.21 As shown, the support member 422 includes:

[0162] The annular portion 4221 is arranged around the vent hole 4211;

[0163] The plurality of connection portions 4222 and the plurality of embedding portions 4223 are all disposed on a side of the annular portion 4221 facing the push rod 414 .

[0164] Specifically, the support member 422 supports the second plug body 421, so that the second plug body 421 maintains its shape, and the edge of the second plug body 421 outside the support member 422 on the second plug body 421 can still be deformed, so that the edge of the second plug body 421 has good sealing performance. The annular portion 4221 surrounds the vent hole 4211, the diameter of the annular portion 4221 is smaller than the diameter of the second plug body 421, the connecting portion 4222 connects the annular portion 4221 and the second plug body 421, and the embedded portion 4223 is embedded in the second plug body 421, and the embedded portion 4223 surrounds the end of the push rod 414.

[0165] In a preferred implementation of the embodiment of the present invention, Fig.16 , Fig.19 , Fig. 20 as well as Fig.21 As shown, the second plug body 421 includes:

[0166] The main body 4212 is connected to the connecting portion 4222;

[0167] The barrel portion 4213 is disposed on the main body portion 4212;

[0168] The embedding portion 4223 is embedded in the barrel portion 4213 .

[0169] Specifically, the main body 4212 is connected to the connecting portion 4222, and the diameter of the main body 4212 is larger than the diameter of the annular portion 4221. The vent hole 4211 is provided at the center of the main body 4212. The barrel 4213 surrounds the end of the push rod 414, and the embedded portion 4223 is embedded in the barrel 4213. The barrel 4213 is sleeved outside the end of the push rod 414 and is engaged with the end of the push rod 414.

[0170] In a preferred implementation of the embodiment of the present invention, Fig.19 As shown, the inner wall of the barrel portion 4213 is circular, and the outer wall of the barrel portion 4213 is non-circular.

[0171] Specifically, the inner side wall of the barrel 4213 is circular, and the end of the push rod 414 is cylindrical. The end of the push rod 414 can be inserted into the barrel 4213, and the two are clamped. The outer side wall of the barrel 4213 is non-circular. Since the shape of the outer side wall of the barrel 4213 is different from the shape of the inner side wall of the barrel 4213, the thickness of the barrel 4213 is not uniform at all places, but has several places with thicker thickness (i.e., the thick wall of the barrel 4213) and several places with thinner thickness (i.e., the thin wall of the barrel 4213), and the embedded part 4223 is embedded in the thick wall of the barrel 4213. The shape of the outer side wall of the barrel 4213 can be related to the number of embedded parts 4223. If the outer side wall of the barrel 4213 is similar to a quadrilateral, a pentagon or a hexagon, the number of embedded parts 4223 is four, five or six.

[0172] In a preferred implementation of the embodiment of the present invention, Fig.15 , Fig.16 as well as Fig.17 As shown, a support ring 23 is provided on the chassis 20 , and the shape of the inner wall of the support ring 23 is the same as the shape of the outer wall of the cylinder 4213 . The support ring 23 is sleeved outside the push rod 414 and the cylinder 4213 .

[0173] Specifically, the support ring 23 is arranged at the opening 21, the shape of the inner wall of the support ring 23 is the same as the shape of the outer wall of the cylinder 4213, and the support ring 23 is sleeved outside the cylinder 4213. The cylinder 4213 is limited by the support ring 23 and cannot rotate. The push rod 414 can only rotate and disassemble the cylinder 4213 after pushing the cylinder 4213 out of the support ring 23, that is, disassemble and install the second piston structure 42.

[0174] In a preferred implementation of the embodiment of the present invention, Fig.17 and Fig.18 As shown, a slot 4142 is provided on the push rod 414 ; a latching protrusion 4214 is provided on the inner side wall of the cylinder portion 4213 , and the latching protrusion 4214 is latched into the slot 4142 .

[0175] Specifically, the outer wall of the push rod 414 forms a slot 4142, which is L-shaped, and the inner wall of the cylinder 4213 forms a protrusion 4214. After the protrusion 4214 is inserted into the slot 4142 and rotated to complete the locking connection, the protrusion 4214 is limited by the slot 4142.

[0176] In a preferred implementation of the embodiment of the present invention, Fig.17 , Fig.19 , Fig. 20 as well as Fig.21 As shown, a guide protrusion 231 is provided on the support ring 23, and an extrusion protrusion 4215 is provided on the outer wall of the cylinder 4213. The position of the extrusion protrusion 4215 corresponds to the position of the clamping protrusion 4214, and both are located between two adjacent embedded portions 4223; the guide protrusion 231 guides the extrusion protrusion 4215 so that the extrusion protrusion 4215 squeezes the clamping protrusion 4214.

[0177] Specifically, the clamping protrusion 4214 is located at the thin wall of the barrel 4213, that is, between the two embedded parts 4223. The outer wall of the barrel 4213 is provided with an extrusion protrusion 4215, which is also located at the thin wall of the barrel 4213, that is, between the two embedded parts 4223. The extrusion protrusion 4215 is used to squeeze the clamping protrusion 4214, so that the clamping protrusion 4214 is closer to the push rod 414, and the clamping fit between the clamping protrusion 4214 and the clamping groove 4142 is more secure. The support ring 23 is provided with a guide protrusion 231, which guides and squeezes the extrusion protrusion 4215, so that the extrusion protrusion 4215 moves toward the push rod 414 and squeezes the clamping protrusion 4214.

[0178] In a preferred implementation of the embodiment of the present invention, Figure 3 and Figure 4 As shown, the first driving mechanism 31 includes:

[0179] A rotation driver 311 is disposed in the chassis 20;

[0180] A first transmission assembly 312 connected to the output shaft of the rotary driver 311;

[0181] A movable shaft 313 connected to the first transmission assembly 312 and connected to the tool 33;

[0182] A lifting assembly 314 connected to the movable shaft 313;

[0183] The lifting driver 315 is connected to the lifting component 314 .

[0184] Specifically, the first driving mechanism 31 is used to drive the tool 33 to rise and fall and rotate, and specifically drives the tool 33 to rotate through the rotation driver 311, and drives the tool 33 to rise and fall through the lifting driver 315. The rotation driver 311 is located on the side of the outer cylinder 32, and the rotation driver 311 transmits the driving force to the tool 33 through the first transmission component 312 and the movable shaft 313. The lifting driver 315 transmits the driving force to the tool 33 through the lifting component 314 and the movable shaft 313. The movable shaft 313 can rise and fall and rotate.

[0185] The first transmission assembly 312 can adopt a gear transmission assembly, and the movable shaft 313 includes: a sleeve and a shaft core. The sleeve is connected to the first transmission assembly 312, and the sleeve rotates relative to the chassis 20. The shaft core is located in the sleeve, and is respectively connected to the lifting assembly 314 and the tool 33, and the shaft core slides in the sleeve, and the sleeve and the shaft core cannot rotate relative to each other. The first transmission assembly 312 transmits the driving force of the rotation driver 311 to the sleeve, so that the sleeve and the shaft core rotate together, and the tool 33 rotates. The lifting assembly 314 transmits the driving force of the lifting driver 315 to the shaft core, so that the shaft core slides relative to the sleeve, and the tool 33 is lifted and lowered. The lifting assembly 314 can adopt a screw structure, and the screw structure includes a screw structure and a nut structure. The lifting driver 315 drives the screw structure of the screw structure to rotate, and converts it into the movement of the nut structure of the screw structure to promote the lifting and lowering of the shaft core.

[0186] In a preferred implementation of the embodiment of the present invention, the first driving mechanism 31 further includes:

[0187] A rotation speed sensor, disposed in the chassis 20 and configured to detect the real-time rotation speed of the movable shaft 313;

[0188] The lifting speed sensor is disposed in the chassis 20 and is configured to detect the real-time lifting speed of the movable shaft 313 .

[0189] Specifically, the shaft sleeve and the shaft core can rotate together, and the shaft core can be lifted and lowered. The rotation speed sensor can detect the real-time rotation speed of the shaft sleeve or the shaft core. The lifting speed sensor can detect the real-time lifting speed of the shaft core.

[0190] In a preferred implementation of the embodiment of the present invention, Fig.13 , Fig.14 , Fig.15 as well as Fig.16 As shown, the second driving mechanism 41 includes:

[0191] A driving driver 411 is disposed on the chassis 20;

[0192] A second transmission assembly 412 connected to the output shaft of the push driver 411;

[0193] A lead screw 413 connected to the second transmission assembly 412;

[0194] The push rod 414 is connected to the lead screw 413 .

[0195] Specifically, the lead screw 413 includes a lead screw and a nut. The second driving mechanism 41 is used to drive the push rod 414 to move, specifically by driving the driver 411 to drive the lead screw of the lead screw 413 to rotate, and converting it into the movement of the nut of the lead screw 413 to push the push rod 414 to move. The second transmission assembly 412 can adopt a gear set transmission assembly.

[0196] Based on the ice cream machine described in any one of the above embodiments, the present invention also provides a preferred embodiment of an ice cream preparation method of an ice cream machine.

[0197] The ice cream preparation method of the ice cream machine according to the embodiment of the present invention comprises the following steps:

[0198] Step S100, after opening the outer cylinder, placing the ice cream raw materials in the inner cylinder, then covering the outer cylinder, and connecting the first driving mechanism and the cutter;

[0199] Step S200, starting the first driving mechanism to drive the cutter to rise and fall and rotate, so that the ice cream raw material is formed into ice cream;

[0200] Step S300, after opening the outer cylinder, take out the inner cylinder containing the ice cream and connect it to the corresponding position of the second piston structure on the chassis;

[0201] Step S400: start the second driving mechanism to push the second piston structure to open the first piston structure and squeeze out the ice cream.

[0202] Specifically, when preparing ice cream, the ice cream is first stirred to form the ice cream, and then squeezed out. The inner cylinder is located inside the outer cylinder. After the outer cylinder is opened, the ice cream raw materials are loaded into the inner cylinder, and the first piston structure closes the outlet structure, so that the ice cream raw materials will not leak out of the outlet structure. After the outer cylinder is closed, the first drive mechanism and the cutter can be connected, and the cutter is separated from the outer cylinder. Starting the first drive mechanism can drive the cutter to rise and fall and rotate, so that the ice cream raw materials are crushed and mixed to form ice cream.

[0203] After the ice cream is formed, the outer cylinder is opened, and the inner cylinder containing the ice cream is taken out and assembled in the corresponding position of the second piston structure on the chassis. Then the second driving mechanism is started to push the second piston structure to move in the inner cylinder, and the pressure in the inner cylinder is used to open the first piston structure. The ice cream in the inner cylinder is squeezed by the second piston structure and discharged from the outlet structure. By controlling the displacement of the second piston structure, the extrusion amount of the ice cream can be adjusted.

[0204] When squeezing out the ice cream, even if the first piston structure is not manually opened, the second piston structure is pushed by the second driving mechanism and the pressure in the inner cylinder is used to squeeze the first piston structure, so that the first piston structure is opened and the ice cream can be squeezed out, thus avoiding the problem of forgetting to manually open the first piston structure and causing the ice cream to be unable to be squeezed out. When the pressure in the inner cylinder is increased, it is also beneficial to squeeze out the large-pore foam in the ice cream, making the foam of the ice cream more delicate.

[0205] Step S200 specifically includes:

[0206] Step S210: Start the rotating drive and the lifting drive simultaneously to rotate the tool and lower the lifting assembly.

[0207] Specifically, the rotating drive and the lifting drive can be started at the same time, and the cutter can be lifted and lowered while the cutter is rotating, so that crushing and stirring can be achieved at the same time.

[0208] Step S200 specifically includes:

[0209] Step S220, obtaining the real-time rotation speed of the movable shaft based on the rotation speed sensor, and obtaining the real-time lifting speed of the movable shaft based on the lifting speed sensor;

[0210] Step S230, when the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, controlling the rotation driver to reduce the real-time rotation speed to the first preset rotation speed, and controlling the lifting driver to reduce the real-time lifting speed to the first preset lifting speed;

[0211] Step S240: When the real-time rotation speed is less than the second preset rotation speed and the real-time lifting speed is less than the second preset lifting speed, control the rotation driver to increase the real-time rotation speed to the second preset rotation speed, and control the lifting driver to increase the real-time lifting speed to the second preset lifting speed; wherein the first preset rotation speed is greater than the second preset rotation speed, and the first preset lifting speed is greater than the second preset lifting speed.

[0212] Specifically, different ice cream ingredients can form different ice creams. Different ice cream ingredients may have different grinding difficulty and viscosity, so it is necessary to adjust the speed of the tool rotation and the speed of the tool lifting. For example, when the grinding difficulty is greater, the speed of the tool rotation will be reduced, and the speed of the tool lifting will also be reduced. When the viscosity is greater, the speed of the tool rotation will be reduced, and the speed of the tool lifting will also be slightly reduced. Specifically, when more ice cubes are added and the temperature is low, the ice cubes are not easy to crush, and the ice cubes are still ice particles after crushing, rather than water, which causes a higher viscosity.

[0213] The rotation speed sensor of the movable shaft and the lifting speed sensor of the movable shaft are assembled to respectively collect the real-time rotation speed of the movable shaft (that is, the real-time rotation speed of the tool) and the real-time lifting speed of the movable shaft (that is, the real-time lifting speed of the tool). In the process of forming ice cream, on the one hand, the preparation time should be shortened; on the other hand, the ice cream should be prevented from melting due to excessive temperature. Therefore, the lifting speed of the tool cannot be too high or too low; the rotation speed of the tool cannot be too high or too low. The appropriate rotation speed range of the tool is between the second preset rotation speed and the first preset rotation speed, and the first preset rotation speed is greater than the second preset rotation speed; the appropriate lifting speed range of the tool is between the second preset lifting speed and the first preset lifting speed, and the first preset lifting speed is greater than the second preset rotation speed.

[0214] When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, it indicates that the real-time rotation speed and the real-time lifting speed are both too high (it may be that there are fewer ice cubes, the temperature of the ice cream raw materials is higher, and the viscosity of the ice cream raw materials is lower). In order to prevent the temperature of the ice cream from rising due to excessive frictional heat generated during rotation and lifting, it is necessary to reduce the real-time rotation speed and the real-time lifting speed. For example, the real-time rotation speed can be reduced to the first preset rotation speed, and the real-time lifting speed can be reduced to the first preset lifting speed.

[0215] When the real-time rotation speed is less than the second preset rotation speed and the real-time lifting speed is less than the second preset lifting speed, it indicates that the real-time rotation speed and the real-time lifting speed are both too low (it may be that there are too many ice cubes, the temperature of the ice cream raw materials is low, and the viscosity of the ice cream raw materials is high). In order to shorten the time, it is necessary to increase the real-time rotation speed and the real-time lifting speed. For example, the real-time rotation speed can be increased to the second preset rotation speed, and the real-time lifting speed can be increased to the second preset lifting speed.

[0216] Step S200 specifically includes:

[0217] Step S250, when the real-time rotation speed is less than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, controlling the rotation driver to adjust the real-time rotation speed to the second preset rotation speed, and controlling the lifting driver to reduce the real-time lifting speed to the first preset lifting speed;

[0218] Step S260: When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is less than the first preset lifting speed, control the rotation driver to reduce the real-time rotation speed to the first preset rotation speed, and control the lifting driver to adjust the real-time lifting speed to the second preset lifting speed.

[0219] Specifically, when the real-time rotation speed is less than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, it indicates that the real-time lifting speed is too high, and the real-time lifting speed needs to be reduced, for example, the real-time lifting speed can be reduced to the first preset lifting speed. The real-time rotation speed may be within a suitable rotation speed range, or may be lower than the second preset rotation speed, and the real-time rotation speed may be adjusted to the second preset rotation speed.

[0220] When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is less than the first preset lifting speed, it indicates that the real-time rotation speed is too high, and the real-time rotation speed needs to be reduced, for example, the real-time rotation speed can be reduced to the first preset rotation speed. The real-time lifting speed may be within the appropriate lifting speed range or may be lower than the second preset lifting speed, and the real-time lifting speed can be adjusted to the second preset lifting speed.

[0221] Step S400 specifically includes:

[0222] Step S410, start the pushing drive to drive the screw of the lead screw to rotate and the speed of the screw is a first preset screw speed, and after a preset time, control the pushing drive to adjust the speed of the screw to a second preset screw speed; wherein the first preset screw speed is greater than the second preset screw speed.

[0223] Specifically, the push drive is started to drive the lead screw to rotate, so that the push rod pushes the second piston structure, and the ice cream in the inner cylinder can be pushed by the second piston structure, and the first piston structure is pushed open, so that the ice cream in the inner cylinder can be squeezed out from the outlet structure.

[0224] Specifically, when the inner cylinder is just assembled onto the support ring, the first piston structure may not be opened, and there is no ice cream in the outlet structure. When the push rod is driven by the push driver to push the second piston structure to move, the screw rod first rotates at a relatively high speed, and the second piston structure moves at a relatively high speed, so that the first piston structure is subjected to a relatively large extrusion force and opens, and the ice cream passes through the through hole and fills the outlet structure. After a preset time, the screw rod rotates at a relatively low speed, and the second piston structure moves at a relatively slow speed, and the ice cream is squeezed out of the outlet structure at a relatively slow speed, so that the ice cream is conveniently loaded without wasting the ice cream.

[0225] The preset time is determined according to the amount of ice cream contained in the outlet structure. When the amount of ice cream contained in the outlet structure is large, a longer preset time can be used; when the amount of ice cream contained in the outlet structure is small, a shorter preset time can be used. Even if the first piston structure is manually opened, the screw rod rotates at a higher speed first, and the ice cream passes through the through hole at a higher speed and quickly fills the outlet structure. When the ice cream fills the outlet structure, the preset time is reached, and the speed of the screw rod can be reduced to the second preset screw rod speed without causing waste of ice cream.

[0226] The ice cream preparation method also includes:

[0227] Step S500, when the required number of servings of ice cream are squeezed out, the cover body is rotated to close the first piston structure and unlock it; wherein, when the first piston structure is closed and unlocked, the limit block is located in the inclined groove near one end of the first flat groove;

[0228] Step S600: when the extrusion of the ice cream is paused, the cover body is rotated to close and lock the first piston structure; wherein, when the first piston structure is closed and locked, the limit block slides in the inclined groove to the first flat groove.

[0229] Specifically, since the ice cream is not squeezed out at one time, after squeezing out a certain number of ice creams, it may take a while to squeeze out the ice cream again. In order to prevent the ice cream from melting, the cover body can be rotated to close the first piston structure and not lock it. If the interval time is relatively long, the cover body can be rotated to close and lock the first piston structure.

[0230] When the cover is rotated, the first identification part and the second identification part can be used to determine whether the first piston structure is closed and unlocked, or whether the first piston structure is closed and locked. Thus, the cover can be rotated to different states according to the first identification part and the second identification part.

[0231] The ice cream preparation method also includes:

[0232] Step S700: after the cover is rotated to open and lock the first piston structure, the second driving mechanism is started to push the second piston structure to squeeze out the ice cream; wherein, when the first piston structure is opened and locked, the limit block slides in the inclined groove to the second flat groove.

[0233] Specifically, when the cover body is rotated until it cannot be rotated further and the first identification part and the second identification part are separated, the first piston structure is in an open and locked state, and ice cream can be squeezed out by pushing the second piston structure. When the limit block is located at a position where the inclined groove is close to the second flat groove, the first piston structure is in an open and unlocked state. When the limit block is located in the second flat groove, the first piston structure is in an open and locked state.

[0234] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An ice cream machine, characterized in that: It includes: Base, chassis, stirring device and extrusion device; The chassis is arranged on the base; The stirring device comprises: A first driving mechanism, disposed on the chassis; The outer cylinder is placed on the base; A cutter, arranged on the outer cylinder; An inner cylinder, located inside the outer cylinder; Wherein, the first driving mechanism is configured to connect the tool and drive the tool to rise, fall and rotate; The bottom of the inner cylinder is provided with an outlet structure, and the outlet structure is provided with a first piston structure; The extrusion device comprises: A second driving mechanism is disposed on the chassis; a second piston structure, disposed on the second driving mechanism; Wherein, the corresponding position of the second piston structure on the chassis is configured to be connected to the inner cylinder, and the second driving mechanism is configured to push the second piston structure to open the first piston structure; A through hole is formed at the bottom of the inner cylinder; the outlet structure comprises: A first cylinder, arranged around the through hole; A second cylinder surrounding the first cylinder; a passage, disposed in the first cylinder and passing through the second cylinder; Wherein, the second cylinder is provided with an inclined groove; The first piston structure comprises: A cover body, sleeved outside the second cylinder; A limit block is arranged on the inner side wall of the cover body and is inserted into the inclined groove and slides in the inclined groove; A first plug body is disposed at the inner bottom of the cover body and is inserted into the first cylinder to seal the through hole; Wherein, when the second driving mechanism pushes the second piston structure, the limit block slides in the inclined groove and drives the first plug body to open the through hole; The second driving mechanism comprises: A driving driver is arranged in the chassis; A second transmission assembly connected to the output shaft of the push driver; A lead screw connected to the second transmission assembly; A push rod is connected with the lead screw.

2. The ice cream machine according to claim 1, characterized in that: The second cylinder is also provided with a first flat groove, the first flat groove is connected to one end of the inclined groove close to the through hole, and the limit block slides in the first flat groove; The second cylinder is also provided with a second flat groove, which is connected to an end of the inclined groove away from the through hole; the limiting block slides in the second flat groove.

3. The ice cream machine according to any one of claims 1-2, characterized in that: The first driving mechanism comprises: A rotation driver is arranged in the chassis; A first transmission assembly connected to the output shaft of the rotary driver; A movable shaft connected to the first transmission assembly and to the tool; A lifting assembly connected to the movable shaft; A lifting driver connected to the lifting assembly; A rotation speed sensor, disposed in the chassis and configured to detect a real-time rotation speed of the movable shaft; The lifting speed sensor is arranged on the chassis and is configured to detect the real-time lifting speed of the movable shaft.

4. The ice cream machine according to any one of claims 1-2, characterized in that: The end surface of the push rod is formed with a groove; The second piston structure comprises: A second plug body is clamped to the push rod, and a vent hole is formed in the second plug body corresponding to the groove position; A support ring, arranged on the second plug body and surrounding the vent hole; A sealing member, disposed on the vent hole; The support ring comprises: Ring Department; A plurality of connecting parts and a plurality of embedding parts are all arranged on a side of the annular part facing the push rod; The second plug body comprises: A main body portion connected to the connecting portion; A barrel portion, disposed on the main body portion; Wherein, the embedding portion is embedded in the barrel portion; The inner wall of the cylinder is circular, and the outer wall of the cylinder is non-circular; The chassis is provided with a support ring, the support ring is sleeved outside the push rod and the cylinder, and the support ring is provided with a guide protrusion; The push rod is provided with a slot; The inner side wall of the barrel is provided with a locking protrusion, and the locking protrusion is locked into the locking groove; The outer side wall of the barrel is provided with an extrusion protrusion, the position of the extrusion protrusion corresponds to the position of the clamping protrusion, and both are located between two adjacent embedded parts; The guide protrusion guides the pressing protrusion so that the pressing protrusion presses the clamping protrusion.

5. An ice cream preparation method for an ice cream machine according to any one of claims 1 to 4, characterized in that: The ice cream preparation method comprises: After opening the outer cylinder, placing the ice cream raw materials in the inner cylinder, closing the outer cylinder, and connecting the first driving mechanism and the cutter; Starting the first driving mechanism to drive the cutter to rise and fall and rotate, so that the ice cream raw material forms ice cream; After opening the outer cylinder, the inner cylinder containing the ice cream is taken out and connected to the corresponding position of the second piston structure on the chassis; The second driving mechanism is started to push the second piston structure to open the first piston structure and squeeze out the ice cream.

6. The ice cream preparation method of the ice cream machine according to claim 5, characterized in that: The step of starting the second driving mechanism and pushing the second piston structure to open the first piston structure and squeeze out the ice cream comprises: Start the pushing drive to drive the screw of the lead screw to rotate and the speed of the screw is a first preset screw speed, and after a preset time, control the pushing drive to adjust the speed of the screw to a second preset screw speed; wherein the first preset screw speed is greater than the second preset screw speed.

7. The ice cream preparation method of the ice cream machine according to claim 6, characterized in that: The ice cream preparation method further comprises: When the required number of ice creams are squeezed out, the cover body is rotated to close the first piston structure and unlock it; wherein, when the first piston structure is closed and unlocked, the limit block is located in the inclined groove at one end close to the first flat groove; When the extrusion of ice cream is paused, the cover body is rotated to close and lock the first piston structure; wherein, when the first piston structure is closed and locked, the limit block slides in the inclined groove to the first flat groove; When the cover is rotated to open and lock the first piston structure, the second driving mechanism is started to push the second piston structure to squeeze out the ice cream; wherein, when the first piston structure is opened and locked, the limit block slides in the inclined groove to the second flat groove.

8. The ice cream preparation method of an ice cream machine according to any one of claims 5 to 7, characterized in that: The step of starting the first driving mechanism to drive the cutter to rise and fall and rotate so as to form ice cream from the ice cream raw material comprises: The rotary drive and the lifting drive are simultaneously activated so that the tool is rotated and the lifting assembly is lowered.

9. The ice cream preparation method of the ice cream machine according to claim 8, characterized in that: The method of starting the first driving mechanism to drive the cutter to rise and fall and rotate to form ice cream further includes: Acquiring a real-time rotation speed of the movable shaft based on a rotation speed sensor, and acquiring a real-time lifting speed of the movable shaft based on a lifting speed sensor; When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, controlling the rotation driver to reduce the real-time rotation speed to the first preset rotation speed, and controlling the lifting driver to reduce the real-time lifting speed to the first preset lifting speed; When the real-time rotation speed is less than the second preset rotation speed and the real-time lifting speed is less than the second preset lifting speed, the rotation driver is controlled to increase the real-time rotation speed to the second preset rotation speed, and the lifting driver is controlled to increase the real-time lifting speed to the second preset lifting speed; wherein the first preset rotation speed is greater than the second preset rotation speed, and the first preset lifting speed is greater than the second preset lifting speed; When the real-time rotation speed is less than the first preset rotation speed and the real-time lifting speed is greater than the first preset lifting speed, controlling the rotation driver to adjust the real-time rotation speed to the second preset rotation speed, and controlling the lifting driver to reduce the real-time lifting speed to the first preset lifting speed; When the real-time rotation speed is greater than the first preset rotation speed and the real-time lifting speed is less than the first preset lifting speed, the rotation driver is controlled to reduce the real-time rotation speed to the first preset rotation speed, and the lifting driver is controlled to adjust the real-time lifting speed to the second preset lifting speed.

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