Rotary lifting integrated power device for food processor and food processor

Abstract

The invention relates to a rotating and lifting integrated power device for a food processer and the food processer, the integrated power device comprises a brushless driving mechanism, a main shaft, a speed reducing mechanism, a hollow lead screw and a lead screw sleeve, the brushless driving mechanism comprises a stator winding assembly and a rotor assembly, and the main shaft is installed in the center of the rotor assembly; the main shaft can axially move relative to the rotor assembly; the speed reducing mechanism is arranged above the brushless driving mechanism, the speed reducing mechanism and the brushless driving mechanism are coaxially installed, a hollow input shaft and a hollow output shaft are arranged in the axial direction of the speed reducing mechanism, and the input shaft is connected with a rotor assembly of the brushless driving mechanism and driven by the rotor assembly. The main shaft penetrates through an input shaft and an output shaft of the reducing mechanism; high-speed rotation and low-speed lifting are achieved on the same axis at the same time through a brushless driving mechanism, under the condition that the length of the main shaft is as short as possible, sufficient lifting stroke is achieved through cooperation of the lead screw and the lead screw sleeve, the structure is more compact, and the size and cost of the power device are greatly reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of mechanical equipment, and particularly relates to the field of food processors, specifically a rotary lifting integrated power device for a food processor and a food processor. Background Technology

[0002] Food processing machines such as ice cream makers and fruit puree makers typically use a high-speed rotating spindle to drive mixing rods or cutting blades to disperse and mix food at high speed. During high-speed mixing, the mixing components often need to rise and fall relative to the container to achieve thorough and even mixing. In existing technologies, the lifting action is usually achieved using a separate power device and transmission mechanism in addition to the rotational power. For example, another motor and transmission mechanism are installed on the side of the main unit to control the lifting and falling of the entire main unit, or to control the lifting and falling of the food processing container. While the structural principle of these food processors is relatively simple, they require two power mechanisms, resulting in a large overall size and high production costs, making them difficult to meet the needs of the home market.

[0003] Of course, some food processors use a single power unit to achieve rotation and lifting, but structurally the power output and the main shaft rotation are on different axes, making the structure more complex and requiring more installation space.

[0004] On the other hand, cycloidal pinwheel reduction mechanisms have always been used in heavy-duty reduction and high-end high-precision products, and are therefore expensive and have high technical barriers. They have not yet been used in the home appliance industry, especially in food processors. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a rotary lifting integrated power device for a food processor and a food processor, which can solve the technical problems of complex power structure, high cost, and large space occupation in the prior art.

[0006] This invention is achieved through the following technical solution: an integrated rotary lifting power device for a food processor, comprising: a brushless drive mechanism, a main shaft, a reduction mechanism, a hollow lead screw, and a lead screw sleeve, wherein: The brushless drive mechanism includes a stator winding assembly and a rotor assembly. The main shaft is mounted at the center of the rotor assembly, driven by the rotor assembly, and passes through the stator winding assembly. The main shaft is axially movable relative to the rotor assembly. The reduction mechanism is positioned above the brushless drive mechanism and the two are installed coaxially. The reduction mechanism has a hollow input shaft and an output shaft along its axis. The input shaft is connected to and driven by the rotor assembly of the brushless drive mechanism. The main shaft passes through the input shaft and the output shaft of the reduction mechanism. The hollow lead screw is installed on the outer periphery of the upper end of the spindle. The top end of the spindle and the top end of the hollow lead screw are rotatably connected, and an axial limiting mechanism is connected between the top end of the spindle and the top end of the lead screw. The lead screw sleeve is connected to the hollow lead screw through an internal thread and an external thread. A transmission mechanism is provided between the lead screw sleeve and the output shaft of the reduction mechanism. The hollow lead screw is also connected to an anti-rotation guide mechanism that allows it to move axially.

[0007] Furthermore, the reduction mechanism is a cycloidal pinwheel reduction mechanism, which includes a cycloidal pinwheel tooth housing, a hollow eccentric input shaft, an upper eccentric bearing and a lower eccentric bearing mounted on the periphery of the hollow eccentric input shaft, an upper cycloidal gear mounted on the periphery of the upper eccentric bearing and a lower cycloidal gear mounted on the periphery of the lower eccentric bearing, a hollow output shaft, and a cycloidal pinwheel cover. The inner wall of the cycloidal pinwheel tooth housing has an internal gear that mates with the upper and lower cycloidal gears. The upper and lower cycloidal gears each have through holes. The inner end of the hollow output shaft has pins corresponding to the number of through holes in the upper and lower cycloidal gears, and each pin passes through the through holes of both the upper and lower cycloidal gears simultaneously. The outer end of the hollow eccentric output shaft protrudes from the center of the cycloidal pinwheel cover, and the outer wall of the outer end has an external gear.

[0008] The brushless drive mechanism is a brushless external rotor motor, and its stator winding assembly is installed at the bottom of the reduction mechanism. That is, the brushless drive mechanism and the reduction mechanism can be assembled into an integrated coaxial structure.

[0009] The rotor assembly includes a rotor support and several permanent magnet plates mounted on the rotor support and located around the stator winding assembly. The rotor support has a non-circular shaft hole in the middle that drives the main shaft and allows the main shaft to move axially. The outer wall of the shaft hole in the middle of the rotor support extends upward to form a docking part that connects to the hollow eccentric input shaft and drives the hollow eccentric input shaft to rotate.

[0010] The docking part in the middle of the rotor support extends completely upward through the hollow eccentric input shaft, and the two sides of the docking part have vertical cut surfaces that contact the vertical plane of the inner wall of the hollow eccentric input shaft to drive the hollow eccentric input shaft; and a first bearing is installed between the docking part and the inner wall of the bottom hole of the cycloidal pinwheel tooth housing, and the outer wall of the part of the docking part that extends through the hollow eccentric input shaft has a retaining ring groove and a retaining ring is installed.

[0011] The axial limiting mechanism between the main shaft and the top of the hollow lead screw includes a connecting seat installed on the top end face of the hollow lead screw. The connecting seat has a shaft hole in the middle for the top end of the main shaft to pass through. The outer wall of the top end of the main shaft has a limiting ring groove. An elastic limiting block arranged radially is installed inside the connecting seat. The inner end of the elastic limiting block is arc-shaped and extends into the limiting ring groove to limit the axial movement of the main shaft relative to the hollow lead screw and the connecting seat, while not affecting the rotation of the main shaft. The lower end of the lead screw sleeve has external teeth on its outer wall and is connected to the external teeth at the outer end of the output shaft of the reduction mechanism through a gear transmission mechanism. The anti-rotation guiding mechanism includes a first guide block and a second guide block. The first guide block and the second guide block have guide holes in their centers for the hollow lead screw to pass through. The first guide block is located above the cycloidal pinwheel cover and below the lead screw sleeve, and the second guide block is located above the lead screw sleeve. The inner diameter of the first guide block and the second guide block is slightly larger than the outer diameter of the hollow lead screw. The inner walls of the guide holes of the first guide block and the second guide block are respectively provided with guide protrusions that correspond to the axial flat blades. Correspondingly, the outer wall of the hollow lead screw has guide grooves that correspond to the guide protrusions. A lead screw sleeve pressure ring is also fitted outside the lead screw sleeve, and a second bearing is provided between the lead screw sleeve pressure ring and the lead screw sleeve. The side of the first guide block is also provided with a gear hole for the external gear of the hollow output shaft to be exposed, and a transmission gear is installed at the gear hole to mesh with both the external gear of the hollow output shaft and the external gear at the lower end of the lead screw sleeve; that is, the transmission gear constitutes a gear transmission mechanism between the hollow output shaft and the lead screw sleeve; the two ends of the gear shaft of the transmission gear are set on the lead screw sleeve pressure ring and the cycloidal pinwheel cover.

[0012] The first guide block, the lead screw sleeve pressure ring, and the second guide block are fixedly connected to the upper end face of the cycloidal pinwheel cover by several longitudinal bolts, forming a whole.

[0013] The outer wall of the cycloidal pinwheel toothed housing is provided with mounting holes for mounting the food processor housing; the food processing components are mounted at the bottom of the main shaft.

[0014] The present invention also provides a food processor, which includes the above-mentioned integrated rotary lifting power device for food processors.

[0015] This invention's integrated power unit achieves both high-speed rotation and slow lifting simultaneously on the same axis through a brushless drive mechanism. It allows for sufficient lifting stroke with a minimal main shaft length, achieved through the cooperation of a lead screw and lead screw sleeve, resulting in a more compact structure. This significantly reduces the size and cost of the power unit, thereby substantially reducing the size and cost of the corresponding food processor, while improving portability and ease of use. Furthermore, the invention employs a cycloidal pinwheel reduction mechanism, which provides high transmission torque, higher transmission stability and precision. When applied to a food processor, this results in better mixing and dispersing effects, and also helps extend the lifespan of the food processor. Attached Figure Description

[0016] Figure 1 This is an overall perspective view of the present invention; Figure 2 This is an overall sectional view of the present invention; Figure 3 This is a partially exploded view of the components above the deceleration mechanism in this invention; Figure 4 This is a partially exploded schematic diagram of the connection between the main shaft and the hollow lead screw in this invention; Figure 5 This is a partially exploded view of the components below the deceleration mechanism in this invention; Figure 6 This is an exploded view of the stop-rotation guide mechanism of the present invention. Detailed Implementation

[0017] The invention will be further illustrated below with reference to specific examples and accompanying drawings.

[0018] like Figures 1-6 As shown, the present invention relates to an integrated rotary lifting power device for a food processor. This integrated power device includes: a brushless drive mechanism 1, a main shaft 2, a reduction mechanism 3, a hollow lead screw 4, and a lead screw sleeve 5, wherein: The brushless drive mechanism 1 includes a stator winding assembly 11 and a rotor assembly 12. The main shaft 2 is mounted at the center of the rotor assembly 12, driven by the rotor assembly 12, and passes through the stator winding assembly 11. The main shaft 2 is axially movable relative to the rotor assembly 12. The reduction mechanism 3 is mounted above the brushless drive mechanism 1 and the two are installed coaxially. The reduction mechanism 3 has a hollow input shaft 31 and an output shaft 32 along its axis. The input shaft 31 is connected to and driven by the rotor assembly 12 of the brushless drive mechanism 1. The output shaft 32 rotates at a certain reduction ratio relative to the input shaft 31. The main shaft 2 passes through the input shaft 31 and the output shaft 32 of the reduction mechanism 3. The hollow lead screw 4 is installed on the outer periphery of the upper end of the spindle 2. The top end of the spindle 2 and the top end of the hollow lead screw 4 are rotatably connected, and the top end of the spindle 2 and the top end of the hollow lead screw 4 are connected to an axial limiting mechanism 6. The axial limiting mechanism 6 enables the spindle 2 and the hollow lead screw 4 to be axially linked, and does not affect the high-speed rotation of the spindle 2 relative to the hollow lead screw 4. The lead screw sleeve 5 is connected to the hollow lead screw 4 via an internal thread. A transmission mechanism 7 is provided between the lead screw sleeve 5 and the output shaft 32 of the reduction mechanism 3. In this embodiment, the lower end of the lead screw sleeve 5 has external teeth on its outer wall and is connected to the external teeth at the outer end of the output shaft 32 of the reduction mechanism 3 via a gear transmission mechanism. Of course, other transmission mechanisms can also be used to achieve the linkage between the output shaft of the reduction mechanism 3 and the lead screw sleeve 5, such as a coupling type transmission mechanism, a magnetic coupling type transmission mechanism, or a belt pulley transmission mechanism. The hollow lead screw 4 is also connected to an anti-rotation guide mechanism 8 that allows it to move axially. With the above structure, on the one hand, the brushless drive mechanism 1 directly drives the main shaft 2 to rotate at high speed through its rotor assembly 12 to perform food preparation work such as stirring. On the other hand, the rotor assembly 12 of the brushless drive mechanism 1 simultaneously drives the hollow input shaft 31 of the reduction mechanism 3. After being reduced by the reduction mechanism 3, the output shaft 32 outputs a low speed, which drives the lead screw sleeve 5 to rotate through the gear transmission mechanism 7. The lead screw sleeve 5 drives the hollow lead screw 4 through the threaded connection and slowly moves up and down along the axial direction under the guidance of the anti-rotation guide mechanism 8, thereby driving the main shaft 2 to slowly move up and down. This achieves the main shaft 2 to move up and down slowly while rotating at high speed, so as to fully stir and break up the food. The forward and reverse rotation of the brushless drive mechanism 1 controls the forward and reverse rotation and the lifting and lowering of the main shaft 2.

[0019] Specifically, such as Figure 2 , Figure 3 As shown, the reduction mechanism 3 is a cycloidal pinwheel reduction mechanism, which includes a cycloidal pinwheel gear housing 30, a hollow eccentric input shaft 31, an upper eccentric bearing 33 and a lower eccentric bearing 34 mounted around the hollow eccentric input shaft 31, an upper cycloidal gear 35 mounted around the upper eccentric bearing 33 and a lower cycloidal gear 36 mounted around the lower eccentric bearing 34, a hollow output shaft 32, and a cycloidal pinwheel cover 37. The inner wall of the cycloidal pinwheel gear housing 30 has a mechanism that mates with the upper cycloidal gear 35 and the lower cycloidal gear 36. The internal gear 301 has several through holes 351 and 361 on the upper cycloidal gear 35 and lower cycloidal gear 36 respectively. The inner end of the hollow output shaft 32 has a pin 321 corresponding to the number of through holes of the upper cycloidal gear 35 and lower cycloidal gear 36, and each pin 321 passes through the through holes 351 and 361 of the upper cycloidal gear 35 and lower cycloidal gear 36 at the same time. The outer end of the hollow eccentric output shaft 32 passes through the middle of the cycloidal pinwheel cover 37 and has an external gear 322 on the outer wall of the outer end. In this embodiment, the axial direction of the inner hole of the hollow eccentric input shaft 31 is the same as the axial direction of the main shaft 2 and the axial direction of the rotor assembly 12. The outer circle of the hollow eccentric input shaft 31 has two outer circles, an upper outer circle and a lower outer circle, which are eccentric relative to the axial direction of the main shaft. The two outer circles are eccentrically offset to the left and right and connected to the inner circles of the upper eccentric bearing 33 and the lower eccentric bearing 34, respectively. The rotation of the hollow eccentric input shaft 31 and the upper eccentric bearing 33 and the lower eccentric bearing 34 drive the upper cycloidal gear 35 and the lower cycloidal gear 36 to oscillate and rotate, and the internal teeth on the inner wall of the cycloidal pinwheel tooth housing 30 are rotated. With the cooperation of the gear 301, the upper cycloidal gear 35 and the lower cycloidal gear 36 drive the pin 321 of the hollow output shaft 32 through their through holes 351 and 361 respectively, and make the entire hollow output shaft 32 rotate at a low speed around the same axis as the main shaft 2, so as to achieve a certain reduction ratio of deceleration rotation; the reduction ratio can be set by parameters such as the number of internal gears 301 of the cycloidal gear and the cycloidal pinwheel tooth housing 30; in this invention, the inner diameter of the hollow output shaft 32 and the hollow eccentric input shaft 31 are both larger than the outer diameter of the hollow lead screw 4, so that the hollow lead screw 4 has sufficient lifting space; In this embodiment, the brushless drive mechanism 1 is a brushless external rotor motor, and its stator winding assembly 11 is installed at the bottom of the reduction mechanism 3. In this embodiment, the stator winding assembly 11 is fixedly installed on the outer bottom of the cycloidal pinwheel tooth housing 30, that is, the brushless drive mechanism 1 and the reduction mechanism 3 can be assembled into an integrated coaxial structure, eliminating part of the outer shell of the brushless drive mechanism 1, further reducing cost and space occupied.

[0020] Combination Figure 2 , Figure 5 As shown, the rotor assembly 12 includes a rotor support 121 and several permanent magnet plates 122 mounted on the rotor support 121 and located around the stator winding assembly 11. The rotor support 121 has a non-circular shaft hole 123 in its center, which drives the main shaft 2 and allows it to move axially. The outer wall of the shaft hole in the center of the rotor support 121 extends upward to form a mating portion 124 that connects to and drives the hollow eccentric input shaft 31 to rotate. The non-circular shaft hole 123 can be formed directly in the center of the rotor support 121, or a shaft hole component 125 with a non-circular hole can be connected to the center of the rotor support 121. For example, as shown in this embodiment, by adding a shaft hole component 125 below the rotor support 121, with a "D"-shaped shaft hole in the center of the shaft hole component 125, and the corresponding main shaft body cross-section also designed as a "D" shape, the rotation of the main shaft 2 driven by the rotor support 121 does not affect the axial movement of the main shaft 2. The docking portion 124 in the middle of the rotor support 121 extends upward completely through the hollow eccentric input shaft 31, and the docking portion 124 has vertical cut surfaces 1241 on both sides that contact the vertical plane 311 on the inner wall of the hollow eccentric input shaft 31 to drive the hollow eccentric input shaft 31; and a first bearing 126 is installed between the docking portion 124 and the inner wall of the bottom hole of the cycloidal pinwheel tooth housing 30. The outer wall of the part of the docking portion 124 that extends through the hollow eccentric input shaft 31 has a retaining ring groove and a retaining ring 127 is installed, thereby axially limiting the rotor assembly 12; The outer wall of the rotor bracket 121 is provided with several spaced portions for isolating and installing permanent magnet plates 122 and is connected to the bracket housing 128, so as to facilitate the positioning, installation and shielding of the permanent magnet plates, making the rotor assembly 12 more aesthetically pleasing as a whole.

[0021] Combined Figure 4 As shown, the axial limiting mechanism 6 at the top of the main shaft 2 and the hollow lead screw 4 includes a connecting seat 61 installed on the top end face of the hollow lead screw 4. The connecting seat 61 has a shaft hole 611 in the middle for the top end of the main shaft 2 to pass through. The outer wall of the top end of the main shaft 2 has a limiting ring groove 21. An elastic limiting block 62 arranged radially is installed inside the connecting seat 61. The inner end of the elastic limiting block 62 is arc-shaped and extends into the limiting ring groove 21 to limit the axial movement of the main shaft 2 relative to the hollow lead screw 4 and the connecting seat 61, while not affecting the rotation of the main shaft 2; that is, after the top of the main shaft 2 passes through the hollow lead screw 4, it is axially limited. The connecting seat 61 and the elastic limiting block 62 of the mechanism 6 form an axial engagement with the limiting ring groove 21 at the top of the spindle 2, thereby realizing the lifting and lowering movement of the spindle 2 with the hollow lead screw 4 without affecting the rotation of the spindle 2. In this embodiment, there is a pair of elastic limiting blocks 62, which are symmetrically arranged. The elastic limiting block 62 is composed of a spring 621 and a limiting block 622. The connecting seat 61, the limiting block 622 and the spring 621 are also provided with limiting protrusions 612 and upper covers 63 on both sides and the top to facilitate the installation of the spring and the limiting block. The interior can be coated with grease or lubricant to reduce the frictional resistance when the spindle 2 rotates. Combined Figure 6As shown, the anti-rotation guiding mechanism 8 includes a first guide block 81 and a second guide block 82. The first guide block 81 and the second guide block 82 have guide holes 800 at their centers for the hollow lead screw 4 to pass through. The first guide block 81 is located above the cycloidal pinwheel cover 37 and below the lead screw sleeve 5, while the second guide block 82 is located above the lead screw sleeve 5. The inner diameters of the first guide block 81 and the second guide block 82 are slightly larger than the outer diameter of the hollow lead screw 4. The inner walls of the first guide block 81 and the second guide block 82 are respectively provided with… Corresponding to the guide protrusions 811 and 821 of the axial flat blade, the outer wall of the hollow lead screw 4 is provided with a guide groove 41 corresponding to the guide protrusions 811 and 821. The lead screw sleeve 5 is also fitted with a lead screw sleeve pressure ring 51, and a second bearing 52 is provided between the lead screw sleeve pressure ring 51 and the lead screw sleeve 5. That is, when the lead screw sleeve 5 rotates, the hollow lead screw 4 will not rotate with the lead screw sleeve 5 under the restriction of the guide protrusions 811 and 821 and the guide groove 41, and can only move up and down longitudinally along the guide protrusions. The first guide block 81 also has a gear hole 812 on its side for the external gear of the hollow output shaft 32 to be exposed, and a transmission gear 71 is installed at the gear hole 812, which meshes with both the external gear 322 of the hollow output shaft 32 and the external gear at the lower end of the lead screw sleeve 5; that is, the transmission gear 71 constitutes the transmission mechanism 7 between the hollow output shaft 32 and the lead screw sleeve 5; the transmission gear 71 can be designed as a double-row gear structure with synchronous or asynchronous operation according to the parameters of the external gear of the hollow output shaft 32 and the external gear of the lead screw sleeve 5; the two ends of the gear shaft of the transmission gear 71 are set on the lead screw sleeve pressure ring 51 and the cycloidal pinwheel cover 37. Alternatively, in this embodiment, after the outer wall of the hollow lead screw 4 is formed with external threads, two longitudinal sections parallel to the axial direction are made along the outer wall. Then, the inner holes of the first guide block 81 and the second annular guide block 82 are made into non-circular shapes corresponding to the external shape of the hollow lead screw 4. This can also prevent the hollow lead screw from rotating and only allow it to rise and fall. In this embodiment, a guide groove is formed in the longitudinal section, corresponding to the guide protrusion in the guide block.

[0022] In this invention, the hollow lead screw 4 is driven to rise and fall by the lead screw sleeve 5. The stroke of the hollow lead screw 4 can reach nearly twice the length of the hollow lead screw 4. If the main shaft 2 is directly driven to achieve the same stroke, the direct drive requires more space and a longer main shaft length.

[0023] The first guide block 81, the lead screw sleeve pressure ring 51, and the second guide block 82 are fixedly connected to the upper end face of the cycloidal pinwheel cover 37 by several longitudinal bolts to form a whole. In this embodiment, the lead screw sleeve pressure ring 51 is divided into an upper pressure ring 511 and a lower pressure ring 512. The lower pressure ring 512 is provided with a bearing groove for installing the second bearing 52, which facilitates the assembly of the second bearing 52 and the lead screw sleeve 5, as well as the assembly of the lead screw sleeve pressure ring. The outer wall of the cycloidal pinwheel housing 30 is provided with mounting holes 302 for mounting the food processor housing; the food processing component 22 is mounted on the bottom of the main shaft 2. The food processing component 22 can be a stirring, crushing, or cutting component, etc., selected as needed.

[0024] The present invention also provides a food processor, which includes the above-mentioned integrated rotary lifting power device for food processors.

[0025] In summary, the integrated power unit of this invention achieves both high-speed rotation and slow lifting simultaneously on the same axis through a brushless drive mechanism. Furthermore, it achieves sufficient lifting stroke through the cooperation of a lead screw and lead screw sleeve while keeping the main shaft length as short as possible, resulting in a more compact structure. This significantly reduces the size and cost of the power unit, thereby substantially reducing the size and cost of the corresponding food processor, while improving portability and ease of use. Moreover, the cycloidal pinwheel reduction mechanism of this invention provides high transmission torque, higher transmission stability and precision. When applied to a food processor, it achieves better mixing and dispersing effects and helps extend the lifespan of the food processor.

[0026] The above embodiments are merely preferred embodiments of the present invention and are used only to explain the present invention, not to limit the present invention. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A rotary lifting integrated power device for a food processor, characterized in that: This integrated power unit includes: a brushless drive mechanism, a main shaft, a reduction mechanism, a hollow lead screw, and a lead screw sleeve, wherein: The brushless drive mechanism includes a stator winding assembly and a rotor assembly. The main shaft is mounted at the center of the rotor assembly, driven by the rotor assembly, and passes through the stator winding assembly. The main shaft is axially movable relative to the rotor assembly. The reduction mechanism is positioned above the brushless drive mechanism and the two are installed coaxially. The reduction mechanism has a hollow input shaft and an output shaft along its axis. The input shaft is connected to and driven by the rotor assembly of the brushless drive mechanism. The main shaft passes through the input shaft and the output shaft of the reduction mechanism. The hollow lead screw is installed on the outer periphery of the upper end of the spindle. The top end of the spindle and the top end of the hollow lead screw are rotatably connected, and an axial limiting mechanism is connected between the top end of the spindle and the top end of the lead screw. The lead screw sleeve is connected to the hollow lead screw through an internal thread. A transmission mechanism is provided between the lead screw sleeve and the output shaft of the reduction mechanism, and the hollow lead screw is also connected to an anti-rotation guide mechanism that allows it to move axially.

2. The integrated rotary lifting power device for a food processor according to claim 1, characterized in that: The reduction mechanism is a cycloidal pinwheel reduction mechanism, which includes a cycloidal pinwheel tooth housing, a hollow eccentric input shaft, an upper eccentric bearing and a lower eccentric bearing mounted on the periphery of the hollow eccentric input shaft, an upper cycloidal gear mounted on the periphery of the upper eccentric bearing and a lower cycloidal gear mounted on the periphery of the lower eccentric bearing, a hollow output shaft, and a cycloidal pinwheel cover. The inner wall of the cycloidal pinwheel tooth housing has an internal gear that mates with the upper and lower cycloidal gears. The upper and lower cycloidal gears each have through holes. The inner end of the hollow output shaft has pins corresponding to the number of through holes in the upper and lower cycloidal gears, and each pin passes through the through holes of both the upper and lower cycloidal gears simultaneously. The outer end of the hollow eccentric output shaft protrudes from the center of the cycloidal pinwheel cover, and the outer wall of the outer end has an external gear.

3. The integrated rotary lifting power device for a food processor according to claim 1 or 2, characterized in that: The brushless drive mechanism is a brushless external rotor motor, and its stator winding assembly is installed at the bottom of the reduction mechanism. That is, the stator winding assembly of the brushless drive mechanism and the bottom shell of the reduction mechanism are arranged coaxially as an integral part.

4. The integrated rotary lifting power device for a food processor according to claim 2, characterized in that: The rotor assembly includes a rotor support and several permanent magnet plates mounted on the rotor support and located around the stator winding assembly. The rotor support has a non-circular shaft hole in the middle that drives the main shaft and allows the main shaft to move axially. The outer wall of the shaft hole in the middle of the rotor support extends upward to form a docking part that connects to the hollow eccentric input shaft and drives the hollow eccentric input shaft to rotate.

5. The integrated rotary lifting power device for a food processor according to claim 4, characterized in that: The docking part in the middle of the rotor support extends completely upward through the hollow eccentric input shaft, and the two sides of the docking part have vertical cut surfaces that contact the vertical plane of the inner wall of the hollow eccentric input shaft to drive the hollow eccentric input shaft; and a first bearing is installed between the docking part and the inner wall of the bottom hole of the cycloidal pinwheel tooth housing, and the outer wall of the part of the docking part that extends through the hollow eccentric input shaft has a retaining ring groove and a retaining ring is installed.

6. The integrated rotary lifting power device for a food processor according to claim 1, characterized in that: The axial limiting mechanism between the main shaft and the top of the hollow lead screw includes a connecting seat installed on the top end face of the hollow lead screw. The connecting seat has a shaft hole in the middle for the top end of the main shaft to pass through. The outer wall of the top end of the main shaft has a limiting ring groove. An elastic limiting block arranged radially is installed inside the connecting seat. The inner end of the elastic limiting block is arc-shaped and extends into the limiting ring groove.

7. The integrated rotary lifting power device for a food processor according to claim 2, characterized in that: The lower end of the lead screw sleeve has external teeth on its outer wall and is connected to the external teeth at the outer end of the output shaft of the reduction mechanism through a gear transmission mechanism. The anti-rotation guiding mechanism includes a first guide block and a second guide block. The first guide block and the second guide block have guide holes in their centers for the hollow lead screw to pass through. The first guide block is located above the cycloidal pinwheel cover and below the lead screw sleeve, and the second guide block is located above the lead screw sleeve. The inner walls of the guide holes of the first guide block and the second guide block are respectively provided with guide protrusions corresponding to the axial flat blade. Correspondingly, the outer wall of the hollow lead screw has guide grooves corresponding to the guide protrusions. The lead screw sleeve is also fitted with a lead screw sleeve pressure ring, and a second bearing is provided between the lead screw sleeve pressure ring and the lead screw sleeve. The side of the first guide block is also provided with a gear hole for the external gear of the hollow output shaft to be exposed, and a transmission gear is installed at the gear hole to mesh with both the external gear of the hollow output shaft and the external gear at the lower end of the lead screw sleeve. That is, the transmission gear constitutes a gear transmission mechanism between the hollow output shaft and the lead screw sleeve; the two ends of the gear shaft of the transmission gear are set on the lead screw sleeve pressure ring and the cycloidal pinwheel cover.

8. The integrated rotary lifting power device for a food processor according to claim 7, characterized in that: The first guide block, the lead screw sleeve pressure ring, and the second guide block are fixedly connected to the upper end face of the cycloidal pinwheel cover by several longitudinal bolts.

9. The integrated rotary lifting power device for a food processor according to claim 2, characterized in that: The outer wall of the cycloidal pinwheel toothed housing is provided with mounting holes for mounting the food processor housing; the food processing components are mounted at the bottom of the main shaft.

10. A food processor comprising the integrated rotary lifting power device for food processors as described in any one of the preceding claims.

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