A food processing machine that processes food evenly.

Abstract

This utility model discloses a food processing machine for uniform processing, including a main unit and a cup body. The cup body is equipped with a pulverizing blade, which includes a blade shaft, a lower blade, and a bushing. The outer wall of the bushing is equipped with an upper blade. One of the side wall of the blade shaft and the inner side wall of the bushing is equipped with a radially protruding guide surface, and the deflection direction of the guide surface from top to bottom is the same as the first rotation direction used for pulverizing the food. The other side is equipped with a limiting rib that cooperates with the guide surface, and the upper end of the guide surface is equipped with a vertically extending driving surface. The driving surface circumferentially limits the limiting rib, so that the limiting rib moves against the guide surface to cooperate with the circumferentially limited driving surface. The driving surface drives the bushing to rotate synchronously, ensuring the consistency of the rotation speed of the upper and lower blades, improving the uniformity of food pulverization. At the same time, when the motor drives the pulverizing blade to rotate in the initial stage of startup, only the lower blade rotates, and the cutting force on the food is small, which greatly reduces the load of the entire pulverizing blade in the initial stage of rotation.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a food processing machine that processes food evenly. Background Technology

[0002] Existing food processors typically consist of a main unit and a cup that works with the main unit. The cup contains pulverizing blades, and the main unit houses a motor that drives the blades. When using the food processor, the user places the food into the cup, and the pulverizing blades rotate at high speed driven by the motor to pulverize and cut the food. To achieve a wider axial cutting range, existing pulverizing blades usually have upper and lower blades, spaced apart along the blade shaft, thus expanding the cutting area. While this design provides good pulverization and relatively uniform food pulverization, the motor noise is relatively high, especially noticeable during initial motor startup.

[0003] Another type of rotary blade assembly and food processor features a first and second bushing mounted on a blade shaft. The blade shaft has a circumferentially undulating first limiting rail, and the lower part of the first bushing has an undulating first sliding rail that engages with the first limiting rail. The second bushing has a circumferentially undulating second limiting rail, and the upper part of the first bushing has an undulating second sliding rail that engages with the first limiting rail. When the blade shaft rotates, the first bushing rotates around the shaft and moves up and down along it, causing the agitator fixed to the first bushing to rotate around the shaft and move up and down along it, thus cutting the food between the upper and lower blades. This type of machine has relatively improved noise levels during food processing. However, users have found that because part of the circumferential force is converted into the circumferential rotation of the upper blade and the other part into the axial reciprocating motion of the upper blade, the rotational speed of the upper blade is less than that of the lower blade. This results in inconsistent fineness between the food pulverized by the upper and lower blades, leading to uneven food processing and severely impacting the user experience. Utility Model Content

[0004] The purpose of this invention is to provide a food processing machine that can process food evenly. It aims to solve the technical contradiction in the prior art that improving the crushing effect requires both upper and lower blades to participate in crushing, but reducing noise requires reducing the number of blades involved in crushing. This invention aims to significantly improve the noise at the beginning of motor startup while maintaining consistent crushing uniformity.

[0005] To achieve the above objectives, this utility model provides a food processing machine for uniform processing, including a main unit and a cup body that cooperates with the main unit. A pulverizing blade is provided inside the cup body, and a motor that drives the pulverizing blade to rotate is provided inside the main unit. The pulverizing blade includes a blade shaft, a lower blade located below the blade shaft, and a bushing sleeve fitted outside the blade shaft and above the lower blade. An upper blade is provided on the outer wall of the bushing sleeve. One of the side wall of the blade shaft and the inner side wall of the bushing has a radially protruding guide surface, and the deflection direction of the guide surface from top to bottom is the same as the first rotation direction used for pulverizing food ingredients. The other side has a limiting rib that cooperates with the guide surface, and a vertically extending driving surface is provided at the upper end of the guide surface. The driving surface circumferentially limits the limiting rib, so that the limiting rib moves against the guide surface to cooperate with the circumferentially limited driving surface.

[0006] This application features a radially protruding guide surface on either the side wall of the cutter shaft or the inner wall of the bushing. The guide surface deflects downwards in the same direction as the first rotational direction used for crushing food. The other guide surface has a limiting rib that mates with the guide surface. When the motor drives the cutter shaft to rotate, if the guide surface is located on the side wall of the cutter shaft, the limiting rib abuts against the guide surface as the guide surface rotates with the cutter shaft. During the rotation of the guide surface, the limiting rib slides relative to the guide surface. The entire bushing moves upwards with the cooperation of the limiting rib and the guide surface, and rotates during the upward movement. This achieves the crushing and mixing of food between the upper and lower blades. During food processing, the user can press a button to repeatedly start and stop the motor, allowing the upper blade to repeatedly fall back and move upwards, achieving the crushing of food between the upper and lower blades. This effectively avoids the problems of stratification and uneven crushing caused by the upper and lower blades being fixed in a fixed position. When the limiting rib moves upward along the guide surface to contact the driving surface, the driving surface circumferentially limits the limiting rib and drives the bushing to rotate synchronously. This ensures the consistency of the rotation speed of the upper and lower blades, avoiding the problem of inconsistent pulverization and uneven food processing caused by the upper blade rotating slower than the lower blade. This helps to further improve the fineness and uniformity of food processing. In addition, the vertical extension of the driving surface changes the force on the limiting rib compared to the force on the guide surface. It changes from "the force pushing the limiting rib circumferentially is less than the force pushing it vertically" to "the force pushing the limiting rib circumferentially is greater than the force pushing it vertically upward". As a result, when the limiting rib contacts the driving surface, it can slowly decelerate under its own weight until it reaches a certain height on the driving surface and stops rising. It will not cross the driving surface, meaning the upper blade can be maintained at a certain height on the driving surface and rotate with the blade shaft, stably maintaining the same rotation speed between the upper and lower blades. Furthermore, when the motor drives the pulverizer blades to rotate during the initial startup, only the lower blade rotates, while the upper blades, under the influence of the guide surface, experience a partial upward force. Therefore, the upper blades experience less force in the circumferential direction, resulting in less cutting force on the food. This significantly reduces the load on the pulverizer blades during the initial rotation, effectively reducing the energy consumption of the motor at startup. Consequently, it reduces the noise of the pulverizer blades when pulverizing food, especially the motor noise during the initial startup. It also prevents the motor from overheating or being damaged due to excessive load during startup, extending the motor's lifespan and improving overall work efficiency.

[0007] In a preferred embodiment of a food processing machine that produces uniformly processed food, the drive surface extends vertically along the axial direction of the cutter shaft.

[0008] By setting the driving surface to extend vertically along the circumference of the cutter shaft, during the movement of the limiting rib from the guide surface to the driving surface, the driving surface only applies a circumferential force to the limiting rib, without any upward vertical force. Under the gravity of the limiting rib, the upward climbing speed of the limiting rib can be quickly reduced, thus significantly shortening the distance the limiting rib rises on the driving surface. This also shortens the vertical height of the driving surface, resulting in a larger smooth area on the outer circumference of the cutter shaft and making it easier to clean. Furthermore, the end connecting the guide surface and the driving surface is higher than the starting end of the guide surface, and the driving surface is vertically extended, creating an obtuse angle between them. This larger angle eliminates cleaning dead zones.

[0009] In a preferred embodiment of a food processing machine that produces uniformly processed food, the pulverizing blade is further provided with a rotating surface that extends in the opposite direction to the guide surface, and the rotating surface is connected to the end of the guide surface away from the drive surface.

[0010] By incorporating a rotating surface extending in the opposite direction to the guide surface of the pulverizing blade, with the rotating surface connected to the end of the guide surface furthest from the drive surface, the upper blade moves upward along the guide surface when the food processor is started, pulverizing and mixing the ingredients between the upper and lower blades. Simultaneously, when processing is paused, the upper blade moves downward along the guide surface under gravity. During this downward movement, it scrapes off ingredients adhering to the inner wall of the cup, bringing these scraped ingredients back to the pulverizing area for secondary pulverization, ensuring more thorough chopping and improving the uniformity of the pulverization. Furthermore, after the upper blade falls to the lowest point of the guide surface, it moves upward along the rotating surface a short distance due to inertia. This upward movement further mixes the ingredients in the middle area and scrapes off ingredients from the inner wall of the cup, ensuring even mixing and improving the uniformity of the food processing.

[0011] In a preferred embodiment of a food processing machine that produces uniformly processed food, the other end of the rotating surface is connected to the end of the driving surface away from the guide surface, and the motor is also used to drive the pulverizing blade to move in a second rotation direction opposite to the first rotation direction.

[0012] By connecting the other end of the rotating surface to the end of the driving surface away from the guide surface, the motor is also used to drive the pulverizing blade to move in a second rotation direction opposite to the first rotation direction. This allows the user to rotate the motor in both directions, so that the pulverizing blade can rotate in both directions. When the pulverizing blade rotates in the first rotation direction, it can move upward with the help of the guide surface and achieve synchronous circumferential rotation with the lower blade when it contacts the driving surface. At the same time, when the pulverizing blade rotates in the second rotation direction, it can move upward with the rotating surface and also achieve contact with the driving surface and synchronous circumferential rotation with the lower blade, thus achieving more thorough pulverization of the ingredients.

[0013] In a preferred embodiment of a food processing machine that produces uniform processing, the side wall of the cutter shaft is provided with a radially outward protrusion, a guide surface is provided on the protrusion, and a limiting rib is provided to protrude radially inward along the inner side wall of the bushing.

[0014] By providing a radially outward protrusion on the side wall of the cutter shaft, with the guide surface located on the protrusion, and the limiting ribs protruding radially inward along the inner side wall of the bushing, the bushing's strength is enhanced through the setting of the limiting ribs. This ensures that when the drive surface abuts against the limiting ribs, the bushing can withstand a large torque, preventing deformation or even breakage. This improves the overall structural stability and durability, ensuring that the food processing machine can maintain efficient and stable operation even under long-term high-intensity use.

[0015] In a preferred embodiment of a food processing machine that produces uniformly processed food, the top of the bushing is provided with a clearance opening for the cutter shaft to pass through, the cutter shaft is provided with an anti-rotation surface extending axially, and the clearance opening is provided with a mating surface adapted to the anti-rotation surface.

[0016] By providing a clearance opening at the top of the bushing for the blade shaft to pass through, the bushing can smoothly pass through the blade shaft when it is fitted onto it from top to bottom, ensuring proper installation. Furthermore, the shaft has an axially extending anti-rotation surface, and the clearance opening has a mating surface that matches the anti-rotation surface. This allows the bushing to achieve precise alignment with the blade shaft during installation, ensuring that the limiting rib is located at the lowest point of the guide surface after installation. This allows the upper blade to move upwards from the lowest point and reciprocate during pressing, ensuring thorough mixing and pulverization of the food in the central area, further improving the uniformity of pulverization and reducing stratification.

[0017] In a preferred embodiment of a food processing machine that produces uniformly processed food, a guide surface is provided on the cutter shaft, an anti-rotation surface is axially aligned with the mating surface, and a limiting rib is axially offset from the mating surface.

[0018] By axially aligning the anti-rotation surface with the mating surface and axially misaligning the limiting rib with the mating surface, the bushing ensures that the limiting rib is axially aligned with the guide surface when installed on the cutter shaft, and can move downwards along the guide surface, ensuring the cutter shaft is properly installed. Simultaneously, after the drive surface and the limiting rib stop, the mating surface and the anti-rotation surface are axially misaligned, thus axially limiting the bushing. This prevents the bushing from continuing to move upwards during high-speed rotation, which could cause the upper blade and cup cover to mate improperly, resulting in severe wear on both. This effectively protects the upper blade and cup cover, extending their service life. Furthermore, when the user disassembles the upper blade from the cutter shaft, the anti-rotation surface and the mating surface are axially aligned, allowing the user to directly lift the upper blade upwards without rotating it to align the anti-rotation surface and the mating surface, improving disassembly and assembly efficiency and enhancing the user experience.

[0019] In a preferred embodiment of a food processing machine that produces uniformly processed food, the cutter shaft includes a guide section with an anti-rotation surface and a reduced-diameter section located between the guide section and the lower blade, wherein the axial width of the reduced-diameter section is not less than the axial height of the guide surface.

[0020] By including a guide section with an anti-rotation surface and a reduced-diameter section between the guide section and the lower blade, the bushing, during its downward movement, allows the clearance hole to enter the reduced-diameter section after the mating surface disengages from the anti-rotation surface. This allows the bushing to rotate circumferentially within the reduced-diameter section, preventing the bushing from being unable to rotate relative to the blade due to the uniform outer diameter of the blade, thus ensuring the upper blade cannot move upward. Simultaneously, the axial width of the reduced-diameter section is not less than the axial height of the guide surface, allowing the top of the bushing to move upward within the reduced-diameter section when it moves upward along the guide surface. This prevents the top of the bushing from getting stuck at the upper end of the reduced-diameter section due to insufficient axial width, ensuring the upper blade can move smoothly upward.

[0021] In a preferred embodiment of a food processing machine that produces uniformly processed food, the reduced-diameter section and the guide section are connected by an inclined transition surface.

[0022] By connecting the reduced diameter section and the guide section with an inclined transition surface, the user can smoothly move the upper blade from the reduced diameter section to the guide section with the help of the transition surface when disassembling the self-guided upper blade, thus improving the ease of disassembly of the upper blade and reducing the difficulty of operation.

[0023] In a preferred embodiment of a food processing machine that produces uniformly processed food, the guide surface and the drive surface have a smooth transition; or,

[0024] The guide surface is set in an arc shape; or,

[0025] The guide surface includes a first guide surface and a second guide surface that are evenly arranged along the circumference of the cutter shaft. The limiting rib includes a first limiting rib and a second limiting rib that are evenly arranged along the circumference of the cutter shaft. The first limiting rib and the first guide surface move relative to each other, and the second limiting rib and the second guide surface move relative to each other.

[0026] By smoothly transitioning the guide surface and the drive surface, the limiting rib can move smoothly and unimpeded to the drive surface when it moves along the guide surface, ensuring the smooth upward movement of the bushing.

[0027] By setting the guide surface to include a first guide surface and a second guide surface evenly arranged circumferentially along the blade shaft, and the limiting ribs including a first limiting rib and a second limiting rib evenly arranged circumferentially along the blade shaft, the blade shaft rotates and drives the bushing upward and circumferentially. During this process, the bushing can achieve more stable dual guidance and drive through the cooperation of the first guide surface and the first limiting rib, as well as the cooperation of the second guide surface and the second limiting rib. This allows the bushing to be simultaneously subjected to force in two directions, resulting in more uniform force distribution. This makes the upward movement and circumferential rotation of the bushing smoother and more stable, which helps to improve the stability of the bushing's movement and effectively avoids deviation or jamming caused by unilateral force, thereby ensuring smoother food processing during crushing and mixing. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the shredder in one embodiment of the present invention;

[0030] Figure 2 This is an exploded view of the shredder in one embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the cutter shaft and the lower cutter blade in one embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the bushing and upper blade in one embodiment of the present invention;

[0033] Figure 5 This is a cross-sectional view of the shredder in one embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the cutter shaft and lower cutter blade in another embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the bushing and upper blade in another embodiment of the present invention;

[0036] Figure 8 This is a cross-sectional view of the bushing and the upper blade in another embodiment of the present invention;

[0037] Figure 9 This is a cross-sectional view of the shredder in another embodiment of the present invention.

[0038] List of components and reference numerals:

[0039] 1-Cutter shaft, 11-Lower cutter blade, 12-Anti-rotation surface, 13-Guide surface, 14-Drive surface, 15-Rotating surface, 16-Reduced diameter section, 17-Guide section, 18-Transition surface, 2-Sleeve, 21-Upper cutter blade, 22-Allowance opening, 221-Mating surface, 23-Limiting rib. Detailed Implementation

[0040] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0041] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] like Figures 1 to 9 As shown, this utility model provides a food processing machine for uniform processing, including a main unit and a cup body that cooperates with the main unit. A pulverizing blade is provided inside the cup body, and a motor that drives the pulverizing blade to rotate is provided inside the main unit. The pulverizing blade includes a blade shaft 1, a lower blade 11 located below the blade shaft 1, and a bushing 2 sleeved outside the blade shaft 1 and located above the lower blade 11. An upper blade 21 is provided on the outer wall of the bushing 2. One of the side wall of the blade shaft 1 and the inner side wall of the bushing 2 has a radially protruding guide surface 13, and the deflection direction of the guide surface 13 from top to bottom is the same as the first rotation direction used for pulverizing the food (e.g., ...). Figure 3 The two are in the same direction as indicated by the middle arrow. The other one of them is provided with a limiting rib 23 that cooperates with the guide surface 13. The upper end of the guide surface 13 is provided with a vertically extending driving surface 14. The driving surface 14 circumferentially limits the limiting rib 23 so that the limiting rib 23 can move relative to the guide surface 13 to cooperate with the driving surface 14 in a circumferential limiting manner.

[0043] This application features a radially protruding guide surface 13 on either the side wall of the cutter shaft 1 or the inner side wall of the bushing 2. The deflection direction of the guide surface 13 from top to bottom is the same as the first rotation direction used for crushing food. The other side of the two surfaces has a limiting rib 23 that cooperates with the guide surface 13. When the motor drives the cutter shaft 1 to rotate, if the guide surface 13 is located on the side wall of the cutter shaft 1, the limiting rib 23 abuts against the guide surface 13 as the guide surface 13 rotates with the cutter shaft 1. During the rotation of the guide surface 13, the limiting rib 23 will slide relative to the guide surface 13. The bushing 2 moves upward with the cooperation of the limiting rib 23 and the guide surface 13, and rotates during the upward movement, thereby crushing and mixing the food between the upper blade 21 and the lower blade 11. During food processing, the user can press a button to repeatedly start and stop the motor, allowing the upper blade 21 to repeatedly fall back and move upward, thus crushing the food between the upper blade 21 and the lower blade 11. This effectively avoids the problem of stratification and uneven crushing caused by the upper blade 21 and the lower blade 11 being fixed in a fixed position. When the limiting rib 23 moves upward along the guide surface 13 and contacts the driving surface 14, the driving surface 14 provides a circumferential stop to the limiting rib 23 and drives the bushing 2 to rotate synchronously, ensuring the consistency of the rotation speed of the upper blade 21 and the lower blade 11. This avoids the problem of inconsistent crushing degree and uneven food processing caused by the upper blade 21 rotating slower than the lower blade 11, which helps to further improve the fineness and uniformity of food processing. In addition, the vertical extension of the driving surface 14 causes the force on the limiting rib 23 to change compared to that on the guide surface 13. That is, the force pushing the limiting rib in the circumferential direction is less than the force pushing it in the vertical direction changes to the force pushing the limiting rib in the circumferential direction is greater than the force pushing it in the vertical direction. As a result, when the limiting rib 23 contacts the driving surface 14, it can slowly decelerate by its own weight until it reaches a certain height on the driving surface and stops rising. It will not cross the driving surface 14. That is, the upper blade can be maintained at a certain height on the driving surface and rotate with the blade shaft, so as to stably maintain the same speed of the upper and lower blades.

[0044] Furthermore, when the motor drives the pulverizer blade to rotate during the initial startup, only the lower blade 11 rotates, while the upper blade has a portion of its force pointing upwards under the action of the guide surface 13. Therefore, the upper blade experiences less force in the circumferential direction, resulting in less cutting force on the food. This significantly reduces the load on the entire pulverizer blade during the initial rotation, effectively reducing the energy consumption of the motor at startup. Consequently, it reduces the noise of the pulverizer blade when pulverizing food, especially the noise of the motor during the initial startup. It also avoids overheating or damage to the motor due to excessive load during startup, extending the motor's service life and improving overall work efficiency.

[0045] It should be noted that the vertical extension mentioned in this application refers to the angle between the driving surface and the guide surface being no less than 90 degrees and no more than 135 degrees. If the angle between the two is too small, it will result in a sharp cleaning dead angle between the driving surface and the guide surface. If the angle is too large, it will result in insufficient circumferential force on the limiting rib, and the limiting rib may climb over the driving surface, making it impossible for the upper and lower blades to rotate together.

[0046] Preferred, Reference Figure 2 and Figure 3 The driving surface 14 extends vertically along the axial direction of the cutter shaft.

[0047] By setting the driving surface 14 to extend vertically along the circumference of the cutter shaft, during the movement of the limiting rib 23 from the guide surface to the driving surface 14, the driving surface 14 only applies a circumferential force to the limiting rib and no upward force. Under the gravity of the limiting rib 23, the upward climbing speed of the limiting rib 23 can be quickly reduced, thus significantly shortening the distance the limiting rib 23 rises on the driving surface. The vertical height of the driving surface 14 can be shortened, resulting in a larger smooth area on the outer circumference of the cutter shaft and making the cutter shaft easier to clean. In other words, in a preferred embodiment, since the driving surface extends vertically along the axial direction of the cutter shaft, the highest point of the limiting rib is circumferentially limited by the driving surface, meaning the limiting rib will not rise beyond the driving surface. Therefore, the top of the driving surface can be set as a free end, eliminating the need for a transverse stop surface at the top of the driving surface. Of course, for some working conditions with significant vibration, such as when crushing harder ingredients, a stop surface can be provided at the top of the driving surface. In addition, the end of the guide surface 13 connected to the drive surface 14 is higher than the starting end of the guide surface 13, and the drive surface 14 is vertically extended, so that the guide surface 13 and the drive surface 14 are obtuse angles. The angle between the two is large, and there are no dead corners in the cleaning.

[0048] It should be noted that this application does not specifically limit the extension direction of the driving surface 14 and the limiting rib 23. As a preferred embodiment of this application, such as... Figure 3 , Figure 4 As shown, both the driving surface 14 and the limiting rib 23 extend in the vertical direction.

[0049] By extending the driving surface 14 and the limiting rib 23 in the vertical direction, the contact area between the driving surface 14 and the limiting rib 23 when they are engaged with the stop is maximized, thereby enabling them to transmit greater torque and avoiding damage to the limiting rib 23 or the driving surface 14 caused by excessive local pressure due to insufficient contact area.

[0050] It should be noted that this application does not specifically limit the structure of the guide surface 13. As a preferred embodiment of this application, the guide surface 13 includes a first guide surface and a second guide surface that are uniformly arranged along the circumference of the cutter shaft 1. The limiting rib 23 includes a first limiting rib 23 and a second limiting rib 23 that are uniformly arranged along the circumference of the cutter shaft 1. The first limiting rib 23 and the first guide surface move relative to each other, and the second limiting rib 23 and the second guide surface move relative to each other.

[0051] By setting the guide surface 13 to include a first guide surface and a second guide surface evenly arranged along the circumference of the cutter shaft 1, and the limiting rib 23 including a first limiting rib 23 and a second limiting rib 23 evenly arranged along the circumference of the cutter shaft 1, the cutter shaft 1 rotates and drives the bushing 2 upward and circumferentially. During this process, the bushing 2 can achieve more stable dual guidance and drive through the cooperation of the first guide surface and the first limiting rib 23, as well as the cooperation of the second guide surface and the second limiting rib 23. This allows the bushing 2 to be simultaneously subjected to force in two directions, resulting in more uniform force distribution. This makes the upward movement and circumferential rotation of the bushing 2 smoother and more stable, which helps to improve the movement stability of the bushing 2 and effectively avoids deviation or jamming caused by unilateral force, thereby ensuring smoother food processing during crushing and mixing.

[0052] As a preferred embodiment of this application, such as Figure 2 , Figure 3 As shown, the shredder also has a rotating surface 15 that extends in the opposite direction to the guide surface 13, and the rotating surface 15 is connected to the end of the guide surface 13 away from the drive surface 14.

[0053] By providing a rotating surface 15 extending in the opposite direction to the guide surface 13, and connecting the rotating surface 15 to the end of the guide surface 13 away from the drive surface 14, when the user starts the food processor to process ingredients, the upper blade 21 can move upward along the guide surface 13 to crush and mix the ingredients between the upper blade 21 and the lower blade 11. In particular, when processing vegetable ingredients, the user can start and stop the motor by pressing a button. When the motor stops working, the upper blade 21 can move downward along the guide surface 13 under the action of gravity. During the downward movement of the upper blade 21, the ingredients adhering to the inner wall of the cup can be scraped off and brought back to the blade crushing area for secondary crushing, thereby ensuring that the ingredients are more thoroughly chopped during the crushing process and further improving the uniformity of crushing. Furthermore, after the upper blade 21 falls back to the lowest end of the guide surface 13, it will move upward along the rotating surface 15 for a certain distance under the action of inertia. During the upward movement, it can further achieve the mixing of ingredients in the middle area and the scraping of ingredients on the inner wall of the cup, further ensuring the uniform mixing of ingredients in the cup and improving the uniformity of food processing.

[0054] Furthermore, such as Figure 2 , Figure 3 As shown, the other end of the rotating surface 15 is connected to the end of the driving surface 14 away from the guide surface 13, and the motor is also used to drive the crushing blade to move in a second rotation direction opposite to the first rotation direction.

[0055] By connecting the other end of the rotating surface 15 to the end of the driving surface 14 away from the guide surface 13, the motor is also used to drive the pulverizing blade to move in a second rotation direction opposite to the first rotation direction. This allows the user to rotate the motor in both directions, so that the pulverizing blade can rotate in both directions. When the pulverizing blade rotates in the first rotation direction, it can move upward with the help of the guide surface 13 and achieve synchronous circumferential rotation with the lower blade 11 when it contacts the driving surface 14. At the same time, when the pulverizing blade rotates in the second rotation direction, it can move upward with the help of the rotating surface 15 and also achieve contact with the driving surface 14 and synchronous circumferential rotation with the lower blade 11, thereby achieving more thorough pulverization of the ingredients. Furthermore, when the upper blade 21 has a blade on one side and no blade on the other, when the upper blade 21 rotates in the first rotation direction, the blade can pulverize the food. When the upper blade 21 rotates in the second rotation direction, the back of the blade can scrape off the food adhering to the inner wall of the cup, bringing the scraped food back to the blade pulverizing area for secondary pulverization, thereby ensuring that the food is more thoroughly chopped during the pulverization process and further improving the uniformity of pulverization. When the upper blade has blades on both sides, the upper blade 21 can pulverize the food in both rotation directions, which helps to improve pulverization efficiency.

[0056] As a preferred embodiment, such as Figure 2 , Figure 3 As shown, there are two guide surfaces 13 and two rotary surfaces 15, which are evenly arranged along the circumference of the cutter shaft 1. The rotary surface 15 is connected to the end of the guide surface 13 away from the drive surface 14, and there are two drive surfaces 14.

[0057] It should be noted that this application does not specifically limit the location of the guide surface 13 and the limiting rib 23, such as Figures 6 to 9 As shown, it can be that the inner sidewall of the bushing 2 is recessed to form the guide surface 13 and the driving surface 14, and the limiting rib 23 is provided on the sidewall of the tool shaft 1; it can also be, as Figures 1 to 5 As shown, as a preferred embodiment of this application, the side wall of the cutter shaft 1 is provided with a radially outward protrusion, the guide surface 13 is provided on the protrusion, and the limiting rib 23 is provided to protrude radially inward along the inner side wall of the bushing 2.

[0058] By providing a radially outward protrusion on the side wall of the cutter shaft 1, with the guide surface 13 positioned on the protrusion, and the limiting rib 23 radially protruding inward along the inner side wall of the bushing 2, the bushing 2 can be strengthened through the setting of the limiting rib 23. This ensures that when the drive surface 14 abuts against the limiting rib 23, the bushing 2 can withstand a large torque, preventing deformation or even breakage. This improves the stability and durability of the overall structure, ensuring that the food processing machine maintains efficient and stable operation even under prolonged high-intensity use. Of course, the guide surface 13 is not limited to the above configuration; it can also be that the cutter shaft 1 has a radially concave groove, with the bottom wall of the groove forming the guide surface 13 and the drive surface 14.

[0059] As a preferred embodiment of this application, such as Figure 2 As shown, the top of the bushing 2 is provided with a relief opening 22 for the cutter shaft 1 to pass through, the cutter shaft 1 is provided with an anti-rotation surface 12 extending along the axial direction, and the relief opening 22 is provided with a mating surface 221 adapted to the anti-rotation surface 12.

[0060] By providing a clearance opening 22 at the top of the bushing 2 for the blade shaft 1 to pass through, the bushing 2 can smoothly pass through the blade shaft 1 when it is fitted onto the blade shaft 1 from top to bottom, ensuring that the bushing 2 can be installed smoothly. Furthermore, the shaft has an axially extending anti-rotation surface 12, and the clearance opening 22 has a mating surface 221 that matches the anti-rotation surface 12. This allows the bushing 2 to achieve precise alignment with the blade shaft 1 when it is installed, ensuring that the limiting rib 23 is located at the lowest end of the guide surface 13 after the bushing 2 is installed. This allows the upper blade 21 to move upwards from the lowest end and reciprocate during pressing, ensuring that the food in the middle area is fully mixed and pulverized, further improving the uniformity of pulverization and reducing stratification.

[0061] Furthermore, such as Figure 2 , Figure 3 , Figure 4 As shown, the guide surface 13 is located on the cutter shaft 1, the anti-rotation surface 12 is axially aligned with the driving surface 14, and the limiting rib 23 is axially misaligned with the mating surface 221.

[0062] By axially aligning the driving surface 14 with the anti-rotation surface 12 and axially misaligning the limiting rib 23 with the mating surface 221, the bushing 2, when installed on the cutter shaft 1, ensures that the limiting rib 23 is axially aligned with the guide surface 13 and can move downward along the guide surface 13, ensuring that the cutter shaft 1 is installed in place. At the same time, after the driving surface 14 and the limiting rib 23 stop and engage, the mating surface 221 and the anti-rotation surface 12 are axially misaligned, thereby achieving axial limitation of the bushing 2. This prevents the bushing 2 from continuing to move upward during high-speed rotation, which could cause the upper blade 21 to misalign with the cup cover, resulting in severe wear of the cup cover and the upper blade 21. This effectively protects the upper blade 21 and the cup cover, extending their service life. In addition, when the user separates the upper blade 21 from the cutter shaft 1, the anti-rotation surface 12 and the mating surface 221 are axially aligned. The user can directly lift the upper blade 21 upward without having to rotate the upper blade 21 at a certain angle to align the anti-rotation surface 12 and the mating surface 221 and lift it upward. This helps to improve the efficiency of disassembly and assembly and enhance the user experience.

[0063] As a preferred embodiment, such as Figure 3 As shown, the cutter shaft 1 includes a guide section 17 with an anti-rotation surface 12 and a reduced diameter section 16 located between the guide section 17 and the lower cutter blade 11. The axial width of the reduced diameter section 16 is not less than the axial height of the guide surface 13.

[0064] By including a guide section 17 with an anti-rotation surface 12 and a reduced-diameter section 16 between the guide section 17 and the lower blade 11, the bushing 2, during its downward movement, after the mating surface 221 disengages from the anti-rotation surface 12, allows the clearance hole to enter the reduced-diameter section 16 and rotate circumferentially within it. This prevents the bushing 2 from being unable to rotate relative to the blade shaft 1 due to the uniform outer diameter of the blade shaft 1, thus preventing the upper blade 21 from moving upward. Simultaneously, the axial width of the reduced-diameter section 16 is not less than the axial height of the guide surface 13, ensuring that when the bushing 2 moves upward along the guide surface 13, the top end of the bushing 2 can move upward within the reduced-diameter section 16. This prevents the top end of the bushing 2 from getting stuck at the upper end of the reduced-diameter section 16 due to its small axial width, thus ensuring the upper blade 21 can move upward smoothly and reach its designated position.

[0065] Furthermore, such as Figure 3 As shown, the reduced diameter section 16 and the guide section 17 are connected by an inclined transition surface 18.

[0066] By connecting the reduced diameter section 16 and the guide section 17 through an inclined transition surface 18, the user can smoothly move the upper blade 21 from the reduced diameter section 16 to the guide section 17 with the help of the transition surface 18 when disassembling the upper blade 21, thereby improving the ease of disassembling the upper blade 21 and reducing the difficulty of operation.

[0067] As a preferred embodiment of this application, such as Figure 3 As shown, the guide surface 13 and the drive surface 14 have a smooth transition.

[0068] By smoothly transitioning the guide surface 13 to the drive surface 14, the limiting rib 23 can move smoothly and unobstructed to the drive surface 14 when it moves along the guide surface 13, ensuring the smooth upward movement of the bushing 2.

[0069] It should be noted that this application does not specifically limit the shape of the guide surface 13; it can extend along a straight line, or, as a preferred embodiment of this application, it can be... Figure 3 As shown, the guide surface 13 is arranged in an arc shape.

[0070] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A food processing machine for uniformly processing food, comprising a main unit and a cup body cooperating with the main unit, wherein a pulverizing blade is provided inside the cup body, and a motor for driving the pulverizing blade to rotate is provided inside the main unit, characterized in that, The pulverizer includes a blade shaft, a lower blade located at the lower part of the blade shaft, and a bushing sleeve sleeved on the outside of the blade shaft and located above the lower blade. The outer wall of the bushing sleeve is provided with an upper blade. One of the side wall of the blade shaft and the inner side wall of the bushing sleeve is provided with a radially protruding guide surface, and the deflection direction of the guide surface from top to bottom is the same as the first rotation direction for pulverizing food. The other of the two is provided with a limiting rib that cooperates with the guide surface, and the upper end of the guide surface is provided with a vertically extending driving surface. The driving surface circumferentially limits the limiting rib so that the limiting rib moves against the guide surface to cooperate with the circumferentially limited driving surface.

2. The food processing machine for uniform processing according to claim 1, characterized in that, The driving surface extends vertically along the axial direction of the cutter shaft.

3. The food processing machine for uniform processing according to claim 1, characterized in that, The shredder also has a rotating surface that extends in the opposite direction to the guide surface, and the rotating surface is connected to the end of the guide surface away from the drive surface.

4. The food processing machine for uniform processing according to claim 3, characterized in that, The other end of the rotating surface is connected to the end of the driving surface away from the guide surface, and the motor is also used to drive the crushing blade to move in a second rotation direction opposite to the first rotation direction.

5. The food processing machine for uniform processing according to claim 1, characterized in that, The cutter shaft sidewall is provided with a radially outward protrusion, the guide surface and the driving surface are provided on the top surface of the protrusion, and the limiting rib is provided to protrude radially inward along the inner sidewall of the bushing.

6. The food processing machine for uniform processing according to claim 1, characterized in that, The top of the bushing is provided with a clearance opening for the cutter shaft to pass through, the cutter shaft is provided with an anti-rotation surface extending along the axial direction, and the clearance opening is provided with a mating surface adapted to the anti-rotation surface.

7. The food processing machine for uniform processing according to claim 6, characterized in that, The guide surface is located on the cutter shaft, the anti-rotation surface is axially aligned with the driving surface, and the limiting rib is axially offset from the mating surface.

8. A food processing machine for uniform processing according to claim 6, characterized in that, The cutter shaft includes a guide section with the anti-rotation surface and a reduced-diameter section located between the guide section and the lower cutter blade. The axial width of the reduced-diameter section is not less than the axial height of the guide surface.

9. A food processing machine for uniform processing according to claim 8, characterized in that, The reduced diameter section and the guide section are connected by an inclined transition surface.

10. A food processing machine for uniform processing according to claim 1, characterized in that, The guide surface and the driving surface have a smooth transition; or... The guide surface is arc-shaped; or... The guide surface includes a first guide surface and a second guide surface that are uniformly arranged circumferentially along the cutter shaft. The limiting rib includes a first limiting rib and a second limiting rib that are uniformly arranged circumferentially along the cutter shaft. The first limiting rib and the first guide surface move relative to each other, and the second limiting rib and the second guide surface move relative to each other.

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