A food processing machine capable of reciprocating motion

Abstract

The utility model discloses a food processing machine capable of reciprocating motion, which relates to the field of household electrical appliances, and comprises a reciprocating motion mechanism and an output shaft, wherein the reciprocating motion mechanism comprises a first gear and a second gear, an annular guide rail extending in a circumferential direction and connected end to end is arranged on the outer surface of a transmission part, the annular guide rail is arranged obliquely, a sliding part matched with the annular guide rail is arranged on the side wall of an accommodating cavity, the first gear and the second gear have a speed difference, and while the first gear drives the output shaft to rotate, the second gear rotates and drives the sliding part to move along the annular guide rail, so that the output shaft reciprocates along its axial direction, and the structural components of the entire reciprocating motion mechanism are reduced, which helps to improve the compactness of the overall structure and reduce the occupied space of the driving mechanism, and at the same time, with the reduction of transmission components, the transmission chain of the second gear transmitting torque to the output shaft is greatly reduced, thereby helping to improve transmission efficiency and reduce kinetic energy loss between multiple components.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a food processing machine capable of reciprocating motion. Background Art

[0002] With the development of society and the improvement of living standards, people's pursuit of dietary diversity and healthy diet is constantly increasing. Therefore, various industrial food processing machines are gradually miniaturized and enter thousands of households. For example, soybean milk machines not only meet people's needs for healthy diet and nutrition, but also greatly improve people's quality of life, and are therefore loved by people.

[0003] The existing food processing machine includes a cup body with a crushing chamber, a crushing device arranged in the crushing chamber, and a motor located below the cup body and driving the crushing device to rotate. When using the food processing machine, the user places the food into the crushing chamber, and the crushing device rotates at high speed driven by the motor to process the food. However, the existing food processing machines, especially meat grinders, generally have poor crushing performance when cutting food. In particular, when crushing vegetable leaves, due to the lightness of the vegetable leaves, some of the vegetable leaves will adhere to the side or bottom of the cup body during the crushing process, and the crushing device is fixed in a horizontal position for rotation and cutting, and the vegetable leaves attached to the wall cannot be crushed, resulting in insufficient processing of the food. In order to solve the above problems, some manufacturers will set a reversing device at the upper end of the knife bar of the crushing device. Through the motion conversion of the reversing device, the crushing device can reciprocate up and down. Although this solution allows the crushing device to move up and down to achieve a larger range of cutting in the axial direction, setting the reversing device in the knife bar will cause the knife bar as a whole to occupy a larger space in the crushing chamber, thereby greatly reducing the food capacity in the crushing chamber, affecting the consumer experience.

[0004] In order to solve the above problems, some manufacturers will set the reversing device in the host. Specifically, Figure 1As shown, the crushing device g is installed on the upper end of the output shaft a, and a rotatable center rod e is installed at the bottom of the output shaft a. The output shaft a and the center rod e are radially fixed and axially movable; a convex pin is radially arranged at the bottom of the output shaft a, and the outer side of the center rod e is movably sleeved with a rotatable sleeve b, and an inclined spiral slide groove f is arranged on the inner surface of the sleeve b, and the convex pin is movably embedded in the spiral slide groove f. A first gear c is sleeved on the outer side of the center rod e, and a second gear d is sleeved on the outer side of the sleeve. The first gear c drives the center rod e to rotate at a first speed, and then the center rod e drives the output shaft a to rotate at a first speed, and the second gear d drives the sleeve b to rotate at a second speed. When there is a speed difference between the first speed and the second speed, the output shaft a can rotate relative to the sleeve b, and the convex pin will move along the trajectory of the spiral slide groove f, so that the output shaft a can move in the axial direction, thereby driving the crushing device g to rotate while realizing up and down cyclic lifting. Although the above scheme can realize the up and down movement of the crushing device while avoiding the crushing device occupying a large space in the crushing chamber, it needs to use the center rod and the sliding sleeve to realize the axial movement of the output shaft. The overall structure is relatively complicated. In addition, due to the large number of transmission components, it will cause jamming during the transmission process, resulting in the output shaft reciprocating motion is not smooth or even unable to rotate. In addition, there will be a large friction between the components, resulting in kinetic energy loss, resulting in low transmission efficiency, and there will be a large friction, vibration and noise during the transmission process, which seriously affects the consumer experience. Utility Model Content

[0005] The utility model aims to provide a food processing machine capable of reciprocating motion, so as to solve the problems that the reversing device for realizing the reciprocating motion of the pulverizing device in the existing food processing machine has a complex overall structure, and that the large number of transmission parts may cause jamming during the transmission process, resulting in the output shaft reciprocating motion not being smooth or even unable to rotate.

[0006] To achieve the above-mentioned purpose, the utility model provides a food processing machine capable of reciprocating motion, comprising a main machine, a driving mechanism arranged in the main machine, a reciprocating motion mechanism connected to the driving mechanism in transmission, and an output shaft, the reciprocating motion mechanism comprising a first gear and a second gear sleeved on the outside of the output shaft, the first gear and the second gear respectively cooperate with the output shaft in transmission, the second gear also has an accommodating cavity for the output shaft to pass through, the part of the output shaft located in the accommodating cavity comprises a transmission part, an annular guide rail extending in a circumferential direction and connected end to end is arranged on the outer surface of the transmission part, the annular guide rail is arranged obliquely relative to the cross-section of the output shaft, a sliding part cooperating with the annular guide rail is arranged on the cavity side wall of the accommodating cavity, the first gear and the second gear have a speed difference, when the first gear drives the output shaft to rotate, the second gear rotates and drives the sliding part to move along the annular guide rail, so that the output shaft reciprocates along its axial direction.

[0007] The present application provides a reciprocating mechanism including a first gear and a second gear mounted on the outside of an output shaft, and an annular guide rail extending circumferentially and connected end to end is provided on the outer surface of a transmission portion of the output shaft, and the annular guide rail is inclined relative to the cross section of the output shaft, that is, the annular guide rail extends circumferentially along the outer surface of the transmission portion, and is connected end to end after circumnavigating the outer surface of the transmission portion. At the same time, a sliding part cooperating with the annular guide rail is provided on the side wall of the accommodating cavity. When the first gear drives the output shaft to rotate, the second gear synchronously drives the sliding part to rotate. With the help of the speed difference between the first gear and the second gear, the transmission part and the sliding part produce relative rotation, so that the sliding part can move along the annular guide rail. Since the sliding part is in a relatively static state with the second gear in the axial direction, when the sliding part moves along the annular guide rail, an axial component force is generated on the transmission part under the mutual left and right of the sliding part and the annular guide rail, so that the transmission part produces axial reciprocating motion along the trajectory of the annular guide rail, so that the output shaft can reciprocate axially while rotating, so that the mixing knife driven by the output shaft can achieve a larger range of mixing in the axial direction, effectively avoiding the situation where the mixing knife cannot cut the food due to the long distance between the food and the mixing knife in the axial direction, which helps to improve the processing effect and efficiency of the food and enhance the user experience.

[0008] At the same time, compared with the traditional method of realizing the axial movement of the output shaft with the help of a center rod and a sliding sleeve, it is only necessary to set a transmission part at the lower part of the output shaft to realize the axial reciprocating movement of the output shaft. On the one hand, the structural components of the entire reciprocating mechanism are reduced, which helps to improve the compactness of the whole machine structure and reduce the space occupied by the drive mechanism; on the other hand, with the reduction of transmission components, the transmission chain of the second gear to transmit torque to the output shaft is greatly reduced, which helps to improve the transmission efficiency, reduce the kinetic energy loss between multiple components, and improve the stability of the transmission, avoid the situation where the output shaft reciprocates unsmoothly or even cannot rotate due to the large number of transmission components, ensure the stability of the transmission of each component, and then improve the stability of the whole machine. At the same time, it can also reduce the vibration and friction noise generated during the transmission of each component, which helps to reduce the generation of noise.

[0009] In a preferred implementation of a reciprocating food processor, the output shaft is configured to have a reciprocating frequency F between 10 times / min and 60 times / min, a reciprocating speed V between 10 mm / s and 30 mm / s, and a reciprocating stroke H between 15 mm and 30 mm.

[0010] By limiting the reciprocating frequency, reciprocating speed and reciprocating shape of the output shaft, it is possible to avoid a situation where the axial movement distance of the output shaft per unit time is too large, resulting in the inability to effectively cut the food in the axial direction; at the same time, it is possible to avoid a situation where the axial movement distance of the output shaft per unit time is too small, resulting in slow food cutting efficiency; and it is possible to avoid a situation where the output shaft rotates too slowly per unit time, resulting in slow food cutting efficiency. While ensuring that the axial reciprocating motion of the output shaft achieves a larger range of axial cutting, the crushing effect of the crushing knife can also be guaranteed, further improving the crushing efficiency.

[0011] In a preferred implementation of a reciprocating food processor, the output shaft includes a shaft body and a shaft sleeve sleeved on the outside of the shaft body, and an annular guide rail is formed on the outer side wall of the shaft sleeve.

[0012] By configuring the output shaft to include a shaft body and a sleeve sleeved on the outside of the shaft body, and forming an annular guide rail on the outer wall of the sleeve, when the sliding part drives the output shaft to reciprocate axially, it first drives the sleeve to move axially, and then the sleeve drives the output shaft to move axially, thereby ensuring smooth transmission.

[0013] In a preferred implementation of a reciprocating food processor, the shaft sleeve is integrally formed with the shaft body; or,

[0014] A rotation-stopping structure is provided between the shaft body and the shaft sleeve so that the shaft body can drive the shaft sleeve to rotate.

[0015] By forming the shaft sleeve and the shaft body as an integral unit, on the one hand, the step of transmitting the shaft sleeve to the output shaft is eliminated, thereby reducing the kinetic energy loss between the shaft sleeve and the output shaft, improving the transmission efficiency, and at the same time reducing the friction noise between the shaft sleeve and the output shaft, thereby improving the working stability; on the other hand, the step of connecting the shaft sleeve to the output shaft is eliminated, which helps to improve the assembly efficiency and shorten the assembly time.

[0016] By providing a rotation-stopping structure between the shaft body and the sleeve, the shaft body can drive the sleeve to rotate, so that while the shaft body is driven to rotate by the first gear, the shaft body can also drive the sleeve to rotate through the rotation-stopping structure, thereby realizing transmission, avoiding the situation where the sleeve cannot rotate due to relative sliding between the shaft body and the sleeve. At the same time, if the output shaft or sleeve is severely worn, it can be replaced and repaired by replacing the output shaft or sleeve alone, avoiding the situation where the sleeve and the output shaft are replaced together, reducing the maintenance cost. At the same time, when replacing the output shaft or sleeve, the two can be disassembled separately, which is convenient for disassembly and helps to improve the disassembly efficiency.

[0017] In a preferred implementation of a reciprocating food processor, the annular guide rail includes a first annular guide rail and a second annular guide rail, and the axial heights of the first annular guide rail and the second annular guide rail are consistent, and the sliding portion includes a first protrusion that cooperates with the first annular guide rail and a second protrusion that cooperates with the second annular guide rail.

[0018] By making the annular guide rail include the first annular guide rail and the second annular guide rail, and the sliding part includes the first protrusion matched with the first annular guide rail and the second protrusion matched with the second annular guide rail, the transmission part is subjected to the torque of the sliding part in both directions, so that the transmission part can achieve uniform force balance, avoid the transmission part being subjected to force on only one side, causing the transmission part to deflect, and then causing the output shaft to get stuck, and the rotation is unstable, thereby improving the stability of the rotation and reciprocating motion of the transmission part and the output shaft. At the same time, the axial height of the first annular guide rail and the second annular guide rail are consistent, so that the axial reciprocating motion of the first protrusion and the second protrusion when moving in the first annular guide rail and the second annular guide rail is consistent, avoiding the situation that the axial height of the first annular guide rail and the second annular guide rail is inconsistent, causing one of the first protrusion and the second protrusion to get stuck and unable to move when moving, thereby ensuring the stable and smooth movement of the sliding part in the annular guide rail.

[0019] In a preferred implementation of a reciprocating food processor, the annular guide rail is an annular groove formed by a concave outer surface of the transmission part, and the first annular guide rail and the second annular guide rail have different depths or widths; or,

[0020] The first annular guide rail and the second annular guide rail are arranged vertically along the axial direction of the transmission part; or,

[0021] The lowest point of the first annular guide rail and the lowest point of the second annular guide rail are located on the same cross section of the output shaft.

[0022] By setting the annular guide rail as an annular groove formed by the inward concave outer surface of the transmission part, the depth or width of the first annular guide rail is different from that of the second annular guide rail, so that after the first protrusion and the second protrusion are adapted to them, the first protrusion and the second protrusion can only move in the guide rail that cooperates with them during the movement process, effectively avoiding the situation where the first protrusion and the second protrusion move to the other guide rail when passing the intersection of the two guide rails when the first annular guide rail and the second annular guide rail are completely consistent and staggered, thereby ensuring the stability of the movement of the first protrusion and the second protrusion, and further ensuring the movement stability of the transmission part.

[0023] By arranging the first annular guide rail and the second annular guide rail up and down along the axial direction of the transmission part, the first annular guide rail and the second annular guide rail are separated in the axial direction, which effectively avoids the situation where the first protrusion and the second protrusion get stuck at the intersection when moving due to the intersection of the two guide rails, thereby ensuring the smoothness of the movement of the first protrusion and the second protrusion.

[0024] In a preferred implementation of a reciprocating food processor, the annular guide rail is an annular groove formed by the outer surface of the transmission part being concave, and the sliding part includes a ball clamped between the side wall of the accommodating cavity and the annular groove; or,

[0025] The annular guide rail is an annular groove formed by the outer surface of the transmission part being concave, and the sliding part includes a latch clamped between the side wall of the accommodating cavity and the annular groove; or,

[0026] The annular guide rail is an annular convex rib formed by the outer surface of the transmission part protruding outward, and the sliding part includes a sliding groove formed on the side wall of the accommodating cavity.

[0027] By configuring the sliding part to include a pin clamped between the side wall of the accommodating cavity and the annular groove, the sliding part can be more firmly fixed between the side wall of the accommodating cavity and the annular guide rail, thereby improving the position reliability of the sliding part and effectively avoiding the situation where the sliding part is unstable and thus detaches from the annular guide rail, causing the output shaft to be unable to achieve axial reciprocating motion.

[0028] The annular convex rib is formed by the annular guide rail as the outer surface of the transmission part, and the sliding part includes a slide groove formed on the side wall of the accommodating cavity, so that when the output shaft rotates, the annular convex rib can slide in the slide groove, thereby providing an axial component force to the transmission part to make it produce axial movement. This transmission structure is simpler and reliable, further reducing the structural components of the entire reciprocating motion mechanism, helping to improve the compactness of the overall structure and reduce the space occupied by the drive mechanism. At the same time, the reduction of transmission components can greatly reduce the kinetic energy loss and jamming generated during the transmission process, further improving the stability of the transmission.

[0029] In a preferred implementation of a reciprocating food processor, the reciprocating mechanism also includes a housing covering the first gear and the second gear, the first gear and the second gear are axially positioned in the housing, and the housing is provided with an escape portion for the reciprocating motion of the transmission portion.

[0030] By configuring the reciprocating mechanism to include a housing that covers the first gear and the second gear, the first gear and the second gear are protected, and the first gear and the second gear are axially positioned in the housing, so as to limit the axial position of the first gear and the second gear and prevent them from moving axially. At the same time, the housing is provided with an escape portion for the transmission part to reciprocate, so as to ensure that the transmission part can achieve axial reciprocating motion with the help of the escape portion, and to avoid interference between the housing and the transmission part, so as to prevent the transmission part from being unable to move axially, thereby ensuring the stability of the movement of the transmission part and the output shaft.

[0031] In a preferred implementation of a reciprocating food processor, the housing and the transmission part are positioned away from the transmission part along the axial direction of the transmission part to form an escape cavity in the housing for the reciprocating motion of the transmission part, and the escape cavity includes the escape cavity.

[0032] The housing and the transmission part are arranged axially away from the transmission part to form an escape cavity in the housing for the reciprocating motion of the transmission part. The escape cavity includes the escape cavity, so that the transmission part can realize axial reciprocating motion with the help of the escape cavity, and the escape cavity can store excess grease for lubricating the first gear and the second gear, effectively avoiding the situation where the grease precipitates outwards and causes the lubrication effect of the first gear and the second gear to deteriorate, thereby ensuring the lubrication effect of the first gear and the second gear.

[0033] In a preferred implementation of a reciprocating food processing machine, the avoidance portion includes an avoidance opening formed with the shell, and a sealing member is provided between the avoidance opening and the transmission portion.

[0034] By forming the avoidance portion including the avoidance opening of the molded shell, the transmission portion can realize axial reciprocating motion by passing through the avoidance opening, so that the molding structure of the avoidance portion is relatively simple, which is convenient for the production of the shell, helps to reduce production costs and improve production efficiency. At the same time, a sealing member is provided between the avoidance opening and the transmission portion to prevent the grease lubricating the first gear and the second gear from overflowing through the gap between the transmission portion and the avoidance opening, causing the lubrication effect of the first gear and the second gear to deteriorate, thereby ensuring the lubrication effect of the first gear and the second gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0036] Figure 1 It is a partial cross-sectional view of the comparative document;

[0037] Figure 2 A cross-sectional view of a food processor in one embodiment of the utility model;

[0038] Figure 3 This is a cross-sectional view of a reciprocating mechanism and an intermediate gear in one embodiment of the utility model;

[0039] Figure 4 This is a schematic diagram of the structure of the output shaft in one embodiment of the utility model;

[0040] Figure 5 A cross-sectional view of a reciprocating mechanism and an intermediate gear in another embodiment of the utility model;

[0041] Figure 6 This is a schematic diagram of the structure of the intermediate gear in one embodiment of the utility model;

[0042] Figure 7 This is a schematic diagram of the structure of the intermediate gear in another embodiment of the utility model;

[0043] Figure 8 This is a structural schematic diagram of a transmission part in another embodiment of the utility model;

[0044] Fig. 9 It is a cross-sectional view of a food processing machine in one embodiment of the utility model.

[0045] List of parts and reference numerals:

[0046] 1-output shaft; 2-first gear; 3-second gear, 31-annular rib, 311-fixing hole, 32-accommodating cavity; 4-transmission part, 41-annular guide rail, 411-first annular guide rail, 412-second annular guide rail, 42-axial hole; 5-sliding part, 51-first protrusion, 52-second protrusion; 6-motor; 7-driving gear; 8-intermediate gear; 9-housing, 91-first step, 92-second step, 93-third step, 94-fourth step, 95-fifth step, 96-avoiding cavity; 101-first bearing, 102-second bearing, 103-third bearing. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0048] It should be noted that many specific details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific implementation methods disclosed below.

[0049] like Figures 2 to 8As shown, the utility model provides a food processing machine capable of reciprocating motion, comprising a main machine, a driving mechanism arranged in the main machine, a reciprocating motion mechanism connected to the driving mechanism in transmission, and an output shaft 1, the reciprocating motion mechanism comprising a first gear 2 and a second gear 3 sleeved on the outside of the output shaft 1, the first gear 2 and the second gear 3 respectively cooperate with the output shaft 1 in transmission, the second gear 3 also has an accommodating cavity 32 for the output shaft 1 to pass through, the part of the output shaft 1 located in the accommodating cavity 32 comprises a transmission part 4, an annular guide rail 41 extending in the circumferential direction and connected end to end is arranged on the outer surface of the transmission part 4, the annular guide rail 41 is arranged obliquely relative to the cross section of the output shaft 1, a sliding part 5 cooperating with the annular guide rail 41 is arranged on the side wall of the accommodating cavity 32, the first gear 2 and the second gear 3 have a speed difference, when the first gear 2 drives the output shaft 1 to rotate, the second gear 3 rotates and drives the sliding part 5 to move along the annular guide rail 41, so that the output shaft 1 reciprocates along its axial direction.

[0050] The present application is provided with a reciprocating mechanism including a first gear 2 and a second gear 3 sleeved on the outside of the output shaft 1, and an annular guide rail 41 extending in the circumferential direction and connected end to end is provided on the outer surface of the transmission part 4 of the output shaft 1, and the annular guide rail 41 is arranged obliquely relative to the cross section of the output shaft 1, that is, the annular guide rail 41 extends obliquely along the circumferential direction of the outer surface of the transmission part 4, and is connected end to end after circumferentially around the outer surface of the transmission part 4, and a sliding part 5 cooperating with the annular guide rail 41 is provided on the side wall of the accommodating cavity 32, when the first gear 2 drives the output shaft 1 to rotate, the second gear 3 synchronously drives the sliding part 5 to rotate, and by virtue of the speed difference between the first gear 2 and the second gear 3, the transmission part 4 and the sliding part 5 generate relative rotation, thereby causing the sliding part 5 to rotate relative to the transmission part 4. The moving part 5 can move along the annular guide rail 41. Since the sliding part 5 is in a relatively static state with the second gear 3 in the axial direction, when the sliding part 5 moves along the annular guide rail 41, an axial component force is generated on the transmission part 4 under the mutual left and right of the sliding part 5 and the annular guide rail 41, so that the transmission part 4 produces axial reciprocating motion along the trajectory of the annular guide rail 41, so that the output shaft 1 can reciprocate axially while rotating, so that the mixing knife driven by the output shaft 1 can achieve a larger range of mixing in the axial direction, effectively avoiding the situation where the mixing knife cannot cut the food due to the fact that the food is far away from the mixing knife in the axial direction, which helps to improve the processing effect and processing efficiency of the food and enhance the user experience.

[0051] It should be noted that in the present invention, when the output shaft is vertically arranged, the reciprocating motion of the stirring knife driven by the output shaft refers to the movement in the up and down direction; when the output shaft is horizontally arranged, the reciprocating motion of the stirring knife driven by the output shaft refers to the horizontal movement. Of course, the stirring knife can be replaced with a blade for shredding and slicing to achieve shredding and slicing through reciprocating motion.

[0052] At the same time, compared with the traditional method of realizing the axial movement of the output shaft 1 with the help of a center rod and a sliding sleeve, it is only necessary to set a transmission part 4 at the lower part of the output shaft 1 to realize the axial reciprocating movement of the output shaft 1. On the one hand, the structural components of the entire reciprocating mechanism are reduced, which helps to improve the compactness of the entire structure and reduce the occupied space of the reciprocating mechanism; on the other hand, with the reduction of the transmission part 4, the transmission chain of the second gear 3 transmitting torque to the output shaft 1 is greatly reduced, which helps to improve the transmission efficiency, reduce the kinetic energy loss between multiple components, and improve the stability of the transmission, avoid the situation where the transmission part 4 is too many and causes the output shaft 1 to reciprocate unsmoothly or even unable to rotate, ensure the stability of the transmission of each component, and then improve the stability of the whole machine. At the same time, it can also reduce the vibration and friction noise generated during the transmission of each component, which helps to reduce the generation of noise.

[0053] Preferably, the first gear 2 is arranged closer to the output end of the output shaft 1 than the first gear 2 , and the rotation speed of the second gear 3 is greater than the rotation speed of the first gear 2 .

[0054] As a preferred embodiment of the present application, the speed difference between the first gear 2 and the second gear 3 is n1, the load speed of the output shaft 1 is n2, P = n1 / n2, and P satisfies: 1 / 250≤P≤3 / 65;

[0055] The reciprocating frequency F, reciprocating speed V and reciprocating stroke H of the output shaft 1 satisfy: 1≤F=30V / H≤6.

[0056] By limiting the speed difference and the reciprocating frequency, reciprocating speed and reciprocating shape of the output shaft 1, it is possible to avoid a situation where the axial movement distance of the output shaft 1 per unit time is too large, resulting in the inability to effectively cut the food in the axial direction; at the same time, it is possible to avoid a situation where the axial movement distance of the output shaft 1 per unit time is too small, resulting in a slow food cutting efficiency; and it is possible to avoid a situation where the speed of the output shaft 1 per unit time is too small, resulting in a slow food cutting efficiency. While ensuring that the axial reciprocating motion of the output shaft 1 achieves a larger range of axial cutting, the crushing effect of the crushing knife can also be guaranteed, further improving the crushing efficiency.

[0057] Specifically, the load speed n2 of the output shaft 1 satisfies: 1300r / min≤2500r / min, preferably n2 can be 1300r / min, 1500r / min, 1700r / min, 1900r / min, etc.; to ensure sufficient crushing, the height difference L between the upper blade and the lower blade of the crushing knife can also ensure that the crushing can be in place during the crushing process, and the reciprocating stroke H of the output shaft 1 needs to be set to be consistent with or greater than the height difference of the blades, so the reciprocating stroke H of the output shaft 1 can be set to between 15-30mm. At the same time, according to experimental investigations, the reciprocating speed V of the output shaft 1 is most important for crushing and stability, and the best effect is between V=10-30mm / s. When V is less than 10mm / s, the tumbling effect on the food is not good; when V is greater than 30mm / s, the axial load is large, and the stability of the output shaft 1 is poor. According to the above parameters, the time for the output shaft 1 to reciprocate once is t=2H / V=1~6s, and the frequency of the reciprocating motion of the output shaft 1 is obtained. F=10~60 times / min; further, in order to ensure the frequency of the reciprocating motion of the output shaft 1 F=10~60 times / min, the speed difference between the first gear 2 and the second gear 3 should be set to 10-60r / min. Preferably, the speed difference can be 20r / min, 30r / min, 40r / min, 50r / min, etc.

[0058] It should be noted that the present application does not specifically limit the structure of the transmission part 4. As a preferred embodiment of the present application, Figure 2 , Figure 3 As shown, the output shaft 4 includes a shaft body and a shaft sleeve sleeved on the outside of the shaft body, and an annular guide rail 41 is formed on the outer wall of the shaft sleeve.

[0059] The output shaft 4 includes a shaft body and a sleeve sleeved on the outside of the shaft body, and the outer wall of the sleeve is formed with an annular guide rail 41, so that when the sliding part 5 drives the output shaft 1 to reciprocate axially, it first drives the sleeve to move axially, and then the sleeve drives the output shaft 1 to move axially, thereby ensuring smooth transmission.

[0060] It should be further explained that the present application does not specifically limit the relative relationship between the output shaft 1 and the sleeve, which can be any one of the following embodiments:

[0061] Embodiment 1: In this embodiment, the shaft sleeve and the shaft body are integrally formed.

[0062] By forming the sleeve and the output shaft 1 as an integral unit, on the one hand, the step of transmitting the sleeve to the output shaft 1 is eliminated, thereby reducing the kinetic energy loss between the sleeve and the output shaft 1 and improving the transmission efficiency. At the same time, the friction noise between the sleeve and the output shaft 1 can also be reduced, thereby improving the working stability. On the other hand, the step of transmitting and connecting the sleeve and the output shaft 1 is eliminated, which helps to improve the assembly efficiency and shorten the assembly time.

[0063] Example 2: Figure 3 , Figure 8 As shown, in this embodiment, a rotation-stopping structure is provided between the shaft body and the shaft sleeve so that the shaft body can drive the shaft sleeve to rotate.

[0064] By providing a rotation-stopping structure between the shaft body and the sleeve, the shaft body can drive the sleeve to rotate, so that while the shaft body is driven to rotate by the first gear, the shaft body can also drive the sleeve to rotate through the rotation-stopping structure, thereby realizing transmission, avoiding the situation where the sleeve cannot rotate due to relative sliding between the shaft body and the sleeve. At the same time, if the output shaft 1 or the sleeve is severely worn, it can be replaced and repaired by replacing the output shaft 1 or the sleeve alone, avoiding the situation where the sleeve and the output shaft 1 are replaced together, reducing the maintenance cost. At the same time, when replacing the output shaft 1 or the sleeve, the two can be disassembled separately, which is convenient for disassembly and helps to improve the disassembly efficiency.

[0065] Specifically, Figure 8 As shown, the anti-rotation structure includes a flat shaft hole 42 provided on the shaft sleeve and a flat position provided on the shaft body and adapted to the shaft hole 42, thereby realizing the transmission of the two. Of course, the shaft hole 42 is not limited to the above-mentioned setting, and it can also be a spline connection or the like, which will not be repeated here.

[0066] It should be noted that the present application does not specifically limit the structure of the annular guide rail 41. As a preferred embodiment of the present application, Figure 4 As shown, the annular guide rail 41 includes a first annular guide rail 411 and a second annular guide rail 412 , and the axial heights of the first annular guide rail 411 and the second annular guide rail 412 are consistent, and the sliding portion 5 includes a first protrusion 51 that cooperates with the first annular guide rail 411 and a second protrusion 52 that cooperates with the second annular guide rail 412 .

[0067] By making the annular guide rail 41 include a first annular guide rail 411 and a second annular guide rail 412, and the sliding part 5 include a first protrusion 51 that cooperates with the first annular guide rail 411 and a second protrusion 52 that cooperates with the second annular guide rail 412, the transmission part 4 is subjected to torque of the sliding part 5 in two directions, so that the transmission part 4 can achieve uniform force balance, avoiding the transmission part 4 being subjected to force on only one side, causing the transmission part 4 to sway, and then causing the output shaft 1 to become stuck and the rotation to be unstable, thereby improving the stability of the rotation and reciprocating motion of the transmission part 4 and the output shaft 1. At the same time, the axial heights of the first annular guide rail 411 and the second annular guide rail 412 are consistent, so that the axial reciprocating motions of the first protrusion 51 and the second protrusion 52 when moving in the first annular guide rail 411 and the second annular guide rail 412 are consistent, avoiding the situation where the axial heights of the first annular guide rail 411 and the second annular guide rail 412 are inconsistent, resulting in one of the first protrusion 51 and the second protrusion 52 being stuck and unable to move when moving, thereby ensuring the stable and smooth movement of the sliding part 5 in the annular guide rail 41.

[0068] Furthermore, the annular guide rail 41 is an annular groove formed by the outer surface of the transmission part 4 being concave, and the first annular guide rail 411 and the second annular guide rail 412 have different depths or widths.

[0069] By making the depth or width of the first annular guide rail 411 and the second annular guide rail 412 different, the first protrusion 51 and the second protrusion 52 are adapted to each other. Then, the first protrusion 51 and the second protrusion 52 can only move within the guide rail that cooperates with them during the movement process, thereby effectively avoiding the situation where the first protrusion 51 and the second protrusion 52 move to the other guide rail when passing the intersection of the two guide rails when the first annular guide rail 411 and the second annular guide rail 412 are completely consistent and staggered, thereby ensuring the stability of the movement of the first protrusion 51 and the second protrusion 52, and further ensuring the movement stability of the transmission part 4.

[0070] It should be noted that the present application does not specifically limit the relative relationship between the first annular guide rail 411 and the second annular guide rail 412 in this embodiment, which may be any one of the following embodiments:

[0071] Embodiment 1: In this embodiment, the first annular guide rail 411 and the second annular guide rail 412 are arranged up and down along the axial direction of the transmission part 4 .

[0072] By arranging the first annular guide rail 411 and the second annular guide rail 412 up and down along the axial direction of the transmission part 4, the first annular guide rail 411 and the second annular guide rail 412 are separated axially, which effectively avoids the situation where the first protrusion 51 and the second protrusion 52 are stuck at the intersection when moving due to the intersection of the two guide rails, thereby ensuring the smoothness of the movement of the first protrusion 51 and the second protrusion 52.

[0073] Example 2: Figure 4 As shown, in this embodiment, the lowest point of the first annular guide rail 411 and the lowest point of the second annular guide rail 412 are located on the same cross section of the output shaft 1, so that the first annular guide rail 411 can be cross-set with the second annular guide rail 412, so that the circumferential height of the annular guide rail 41 can be set larger, thereby making the reciprocating stroke of the output shaft 1 larger, so that the axial stirring range of the stirring blade is wider, which helps to further improve the stirring effect.

[0074] Of course, the annular guide rail 41 in the present application is not limited to the above-mentioned configuration. Figure 8 As shown, the annular guide rail 41 can also be provided in one piece, and the sliding part 5 can also be provided in one piece.

[0075] It should be noted that the present application does not specifically limit the structure of the sliding portion 5, which may be any one of the following embodiments:

[0076] Example 1: Figure 3 As shown, in this embodiment, the annular guide rail 41 is an annular groove formed by the outer surface of the transmission part 4, and the sliding part 5 includes a ball clamped between the side wall of the accommodating cavity 32 and the annular groove.

[0077] By configuring the sliding portion 5 to include a ball clamped between the side wall of the accommodating cavity 32 and the annular groove, the sliding friction between the annular guide rail 41 and the sliding portion 5 is converted into rolling friction due to the characteristics of the ball, thereby effectively reducing the friction resistance between the two, making the reciprocating motion of the output shaft 1 smoother, while reducing the kinetic energy loss during the transmission process, and further improving the transmission efficiency.

[0078] Specifically, Figure 3 As shown, the second gear 3 is provided with an annular rib 31 extending to the outside of the transmission part 4, and a fixing hole 311 is provided on the annular rib 31. The ball is clamped between the fixing hole 411 and the annular groove. The annular rib 31 can further improve the radial limitation of the transmission part 4 and the entire output shaft 1, effectively avoiding the swing of the output shaft 1 and causing unstable transmission, thereby improving the stability of the whole machine operation.

[0079] Example 2: Figure 5 As shown, in this embodiment, the annular guide rail 41 is an annular groove formed by the outer surface of the transmission part 4, and the sliding part 5 includes a pin clamped between the side wall of the accommodating cavity 32 and the annular groove.

[0080] By configuring the sliding portion 5 to include a pin clamped between the side wall of the accommodating cavity 32 and the annular groove, the sliding portion 5 can be more firmly fixed between the side wall of the accommodating cavity 32 and the annular guide rail 41, thereby improving the position reliability of the sliding portion 5 and effectively avoiding the situation where the sliding portion 5 is unstable and thus detaches from the annular guide rail 41, causing the output shaft 1 to be unable to achieve axial reciprocating motion.

[0081] Embodiment 3: In this embodiment, the annular guide rail 41 is an annular convex rib formed by the outer surface of the transmission part 4, and the sliding part 5 includes a sliding groove formed on the side wall of the accommodating cavity 32.

[0082] The annular guide rail 41 is formed into an annular convex rib on the outer surface of the transmission part 4, and the sliding part 5 includes a slide groove formed on the side wall of the cavity 32. Specifically, the annular convex rib has a connecting section extending into the slide groove and a stop section connected to the connecting section and with an enlarged outer diameter. The notch of the slide groove is provided with a baffle extending toward the connecting section, so that the baffle limits the stop section, so that the stop section can be limited in the slide groove to avoid being separated from the slide groove when sliding. And when the output shaft 1 rotates, the annular convex rib can slide in the slide groove, thereby providing an axial component force to the transmission part 4 to make it produce axial movement. This transmission structure is simpler and reliable, further reducing the structural components of the entire reciprocating motion mechanism, helping to improve the compactness of the overall structure and reduce the space occupied by the drive mechanism. At the same time, the reduction of the transmission part 4 can greatly reduce the kinetic energy loss and jamming generated during the transmission process, further improving the stability of the transmission.

[0083] As a preferred implementation of the present application, Figure 3 As shown, the reciprocating mechanism further includes a housing 9 covering the first gear 2 and the second gear 3. The first gear 2 and the second gear 3 are axially positioned in the housing 9, and the housing 9 is provided with an escape portion for the transmission portion 4 to reciprocate.

[0084] By setting the reciprocating mechanism to also include a housing 9 covering the first gear 2 and the second gear 3, the first gear 2 and the second gear 3 are protected, and the first gear 2 and the second gear 3 are axially positioned in the housing 9, so as to limit the axial position of the first gear 2 and the second gear 3 and prevent them from moving axially. At the same time, the housing 9 is provided with an escape portion for the reciprocating motion of the transmission part 4, so as to ensure that the transmission part 4 can achieve axial reciprocating motion with the escape of the escape portion, avoid interference between the housing 9 and the transmission part 4, and prevent the transmission part 4 from being unable to move axially, thereby ensuring the stability of the movement of the transmission part 4 and the output shaft 1.

[0085] It should be noted that the present application does not specifically limit the structure of the avoidance portion, which may be any one of the following embodiments:

[0086] Example 1: Figure 3 As shown, in this embodiment, the position where the housing 9 and the transmission part 4 are positioned is arranged away from the transmission part 4 along the axial direction of the transmission part 4 to form an escape cavity 96 in the housing 9 for the reciprocating motion of the transmission part 4, and the escape portion includes the escape cavity 96.

[0087] By arranging the housing 9 and the transmission part 4 axially away from the transmission part 4, a void cavity 96 for reciprocating motion of the transmission part 4 is formed in the housing 9. The void cavity 96 can store excess grease for lubricating the first gear 2 and the second gear 3 while the transmission part 4 can realize axial reciprocating motion with the help of the void cavity 96. This effectively prevents the grease from escaping outwards and causing the lubrication effect of the first gear 2 and the second gear 3 to deteriorate, thereby ensuring the lubrication effect of the first gear 2 and the second gear 3.

[0088] Embodiment 2: In this embodiment, the avoidance portion includes an avoidance opening formed with the housing 9 , and a sealing member is provided between the avoidance opening and the transmission portion 4 .

[0089] By forming the avoidance portion including the avoidance opening formed with the housing 9, the transmission portion 4 can realize axial reciprocating motion by passing through the avoidance opening, so that the molding structure of the avoidance portion is relatively simple, which is convenient for the production of the housing 9, and helps to reduce production costs and improve production efficiency. At the same time, a sealing member is provided between the avoidance opening and the transmission portion 4 to prevent the grease lubricating the first gear 2 and the second gear 3 from overflowing through the gap between the transmission portion 4 and the avoidance opening, thereby preventing the lubrication effect of the first gear 2 and the second gear 3 from being deteriorated, thereby ensuring the lubrication effect of the first gear 2 and the second gear 3.

[0090] As a preferred implementation of the present application, Figure 3As shown, the reciprocating mechanism also includes a first bearing 101 for limiting the output shaft 1, a second bearing 102 for limiting the first gear 2, and a third bearing 103 for limiting the second gear 3, and a first step 91 for limiting the first bearing 101 is formed on the housing 9, which is used to facilitate the installation of the first bearing 101 and can limit the output shaft 1 to prevent the output shaft 1 from swinging too much and causing vibration and noise; the housing 9 is also formed with a second step 92 for limiting the second bearing 102, which is used to facilitate the installation and positioning of the second bearing 102 and can limit the first gear 2; the housing 9 is also provided with a third step 93 for limiting the first gear 2, and the third step 93 is aligned with the first gear 2 The clearance fit can not only limit the first gear 2, but also store the grease of the first gear 2 during operation, which can play a role of long-term lubrication for the first gear 2; the housing 9 is also provided with a fourth step 94 for limiting the third bearing 103, which is used to facilitate the installation of the third bearing 103 and can limit the third bearing 103 so that the reciprocating motion mechanism can run stably and reliably; the housing 9 is also provided with a fifth step 95 for limiting the second gear 3, and the fifth step 95 is clearance-fitted with the second gear 3. This step can also store excess grease of the second gear 3 during operation, which can play a role of long-term lubrication for the second gear 3 and extend the service life of the second gear 3.

[0091] As a preferred embodiment of this application, Figure 2 As shown, the present application also includes a driving mechanism connected to the reciprocating motion mechanism. The present application does not specifically limit the structure of the driving mechanism, which can be any one of the following embodiments:

[0092] Embodiment 1: In this embodiment, the driving mechanism includes a first motor 6 and a second motor 6. The first motor 6 drives the first gear 2 to rotate, and the second motor 6 drives the second gear 3 to rotate.

[0093] By configuring the driving mechanism to include a first motor 6 and a second motor 6, the first motor 6 drives the first gear 2 to rotate, and the second motor 6 drives the second gear 3 to rotate, so that the first gear 2 and the second gear 3 have their own separate driving structures, the rotation of the first gear 2 and the second gear 3 is more stable and reliable, avoiding the situation where the first gear 2 and the second gear 3 share a driving structure, which may cause relative interference between the first gear 2 and the second gear 3, resulting in unstable rotation or even stuck and unable to rotate, thereby ensuring the stability of the whole machine operation.

[0094] Example 2: Figure 2 As shown, in this embodiment, the driving mechanism includes a motor 6 and a driving gear 7 connected to the motor shaft of the motor 6 , and the driving gear 7 is transmission-connected to the first gear 2 and the second gear 3 via an intermediate gear 8 .

[0095] By setting the driving mechanism to include a motor 6 and a driving gear 7 connected to the motor shaft of the motor 6, and the driving gear 7 is connected to the first gear 2 and the second gear 3 through the intermediate gear 8, after the torque output by the motor 6 is transmitted to the driving gear 7, the driving gear 7 can drive the intermediate gear 8 to rotate, and then transmit the torque to the first gear 2 and the second gear 3 after deceleration by the intermediate gear 8, thereby achieving the output of large torque after speed reduction, and the output torque of the output shaft 1 is larger, which helps to further improve the crushing effect, and avoids the situation where the motor 6 directly drives the first gear 2 and the second gear 3, resulting in a small output torque, which makes it impossible to shred when processing hardness The food material cannot be processed, resulting in poor food processing effect.

[0096] Example 3: Figure 2 , Figure 3 , Figure 6 As shown, in this embodiment, the driving mechanism includes an intermediate gear 8 that drives the first gear 2 and the second gear 3. The intermediate gear 8 is a double-toothed gear. The first gear 2 and the second gear 3 have the same radius but different numbers of teeth. The upper teeth of the double-toothed gear are meshed with the first gear 2 and the second gear 3, and the lower teeth of the double-toothed gear are meshed with the driving gear 7.

[0097] By setting the intermediate gear 8 as a double-linked gear, and the first gear 2 and the second gear 3 have the same radius but different numbers of teeth, the upper teeth of the double-linked gear mesh with the first gear 2 and the second gear 3, and the lower teeth of the double-linked gear mesh with the driving gear 7, the first gear 2 and the second gear 3 achieve a difference in rotation speed due to the different numbers of teeth. At the same time, the first gear 2 and the second gear 3 have the same radius, which can ensure that the radial space occupied by the first gear 2 and the second gear 3 is consistent, so that the housing 9 covering the first gear 2 and the second gear 3 can be cylindrical in the axial direction, which is convenient for the production and processing of the housing 9, helps to reduce the production cost of the housing 9 and improve production efficiency.

[0098] Example 4: Figure 7 As shown, in this embodiment, the driving mechanism includes an intermediate gear 8 that drives the first gear 2 and the second gear 3. The intermediate gear 8 is a triple tooth. The first gear 2 and the second gear 3 have different radii but the same number of teeth. The upper teeth of the triple teeth are meshed with the first gear 2, the middle teeth of the triple teeth are meshed with the second gear 3, and the lower teeth of the triple teeth are meshed with the driving gear 7.

[0099] Embodiment 5: In this embodiment, the driving mechanism includes a motor 6 and a driving gear connected to the motor shaft of the motor 6. The driving gear is a double-toothed gear. The upper teeth of the double-toothed gear are meshed with the first gear 2, and the lower teeth of the double-toothed gear are meshed with the second gear 3. The motor directly drives the first gear 2 and the second gear 3 to rotate through the driving gear. At the same time, the speed difference is realized through the double-toothed gear. The structure is further simplified and the transmission efficiency is higher.

[0100] Embodiment 6: In this embodiment, the driving mechanism includes an exposed handle and a transmission gear that is connected to the handle and between the handle and the reciprocating motion mechanism. When in use, the user shakes the handle to drive the transmission gear to rotate, and then the transmission gear drives the reciprocating motion mechanism to rotate, thereby realizing overall transmission. The structure is simple and easy to operate. At the same time, the user can control the rotation speed and the frequency of the reciprocating motion according to the processing conditions of the food, so that the food can be processed more fully.

[0101] As a preferred implementation of the present application, Fig. 9 As shown, the end of the output shaft 1 is connected to a crushing knife, which includes an upper blade and a lower blade arranged in the axial direction. The distance L between the upper blade and the lower blade satisfies: 15≤L≤30mm, so as to avoid the situation where the distance between the upper blade and the lower blade is too small, resulting in a small cutting range of the crushing knife and low cutting efficiency; at the same time, avoid the situation where the distance between the upper blade and the lower blade is too large, resulting in uneven shredding. Of course, the crushing knife in this application can also be a single-layer knife, preferably a flat knife, which can save blades and reduce production costs when realizing axial reciprocating motion.

[0102] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

[0103] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0104] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0105] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

Claims

1. A reciprocating food processing machine, comprising a main machine, a reciprocating mechanism arranged in the main machine and an output shaft, characterized in that: The reciprocating mechanism includes a first gear and a second gear sleeved on the outside of the output shaft, the first gear and the second gear are respectively matched with the output shaft in transmission, the second gear also has an accommodating cavity for the output shaft to pass through, the part of the output shaft located in the accommodating cavity includes a transmission part, an annular guide rail extending in the circumferential direction and connected end to end is provided on the outer surface of the transmission part, the annular guide rail is inclined relative to the cross-section of the output shaft, a sliding part matched with the annular guide rail is provided on the cavity side wall of the accommodating cavity, the first gear and the second gear have a speed difference, while the first gear drives the output shaft to rotate, the second gear rotates and drives the sliding part to move along the annular guide rail, so that the output shaft reciprocates along its axial direction.

2. A reciprocating food processor according to claim 1, characterized in that: The output shaft is configured to have a reciprocating frequency F between 10 times / min and 60 times / min, a reciprocating speed V between 10 mm / s and 30 mm / s, and a reciprocating stroke H between 15 mm and 30 mm.

3. A reciprocating food processor according to claim 1 or 2, characterized in that: The output shaft comprises a shaft body and a shaft sleeve sleeved on the outside of the shaft body, and the outer side wall of the shaft sleeve is formed with the annular guide rail.

4. A reciprocating food processor according to claim 3, characterized in that: The shaft sleeve is integrally formed with the shaft body; or, A rotation-stopping structure is provided between the shaft body and the shaft sleeve so that the shaft body can drive the shaft sleeve to rotate.

5. A reciprocating food processor according to claim 1, characterized in that: The annular guide rail includes a first annular guide rail and a second annular guide rail, and the axial heights of the first annular guide rail and the second annular guide rail are consistent. The sliding portion includes a first protrusion that cooperates with the first annular guide rail and a second protrusion that cooperates with the second annular guide rail.

6. A reciprocating food processor according to claim 5, characterized in that: The annular guide rail is an annular groove formed by the outer surface of the transmission part being concave, and the first annular guide rail and the second annular guide rail have different depths or widths; or, The first annular guide rail and the second annular guide rail are arranged vertically along the axial direction of the transmission part; or, The lowest point of the first annular guide rail and the lowest point of the second annular guide rail are located on the same cross section of the output shaft.

7. A reciprocating food processor according to claim 1, characterized in that: The annular guide rail is an annular groove formed by the outer surface of the transmission part being concave, and the sliding part includes a ball clamped between the side wall of the accommodating cavity and the annular groove; or The annular guide rail is an annular groove formed by the outer surface of the transmission part being concave, and the sliding part comprises a latch clamped between the side wall of the accommodating cavity and the annular groove; or, The annular guide rail is an annular convex rib formed by the outer surface of the transmission part protruding outward, and the sliding part includes a sliding groove formed on the side wall of the cavity of the accommodating cavity.

8. A reciprocating food processor according to claim 1, characterized in that: The reciprocating mechanism further comprises a housing covering the first gear and the second gear, the first gear and the second gear are axially positioned in the housing, and the housing is provided with an escape portion for the transmission portion to reciprocate.

9. A reciprocating food processor according to claim 8, characterized in that: The position where the shell and the transmission part are aligned is arranged away from the transmission part along the axial direction of the transmission part, so as to form an escape cavity in the shell for the reciprocating motion of the transmission part, and the escape portion includes the escape cavity.

10. A reciprocating food processor according to claim 8, characterized in that: The avoidance portion includes a avoidance opening formed with the shell, and a sealing member is provided between the avoidance opening and the transmission portion.

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