Knife assembly and ice cream machine

Abstract

The utility model discloses a tool assembly and ice cream machine relates to ice cream machine technical field, wherein, tool assembly includes drive shaft and stirring knife group, drive shaft extends along up and down direction, and with rotation drive assembly drive connection, drive shaft includes main rod and the first magnetic piece of being located at the lower extreme of main rod, and the lower extreme of drive shaft still is equipped with first connecting assembly, stirring knife group includes the knife shaft and the cutter body that are connected, is equipped with a plurality of blade on the cutter body, is equipped with the second magnetic piece in the knife shaft, and is equipped with the combination hole on the end face of the cutter body away from the cutter body, and the hole wall of combination hole is equipped with the second connecting assembly, and the second connecting assembly is connected with first connecting assembly, and the second magnetic piece and first magnetic piece magnetism suction connection are connected with the knife shaft and drive shaft. The utility model provides technical scheme can have higher connection stability.

Description

Technical Field

[0001] This utility model relates to the field of ice cream machine technology, and in particular to a cutter assembly and an ice cream machine. Background Technology

[0002] Micro puree makers and ice cream makers typically include a cup body for holding materials and a mixing blade that extends into the cup body to crush the materials. The mixing blade is connected to a rotary drive assembly via a drive shaft, which enables the mixing blade to rotate within the cup body to crush the materials.

[0003] According to patent document CN202322703637.4, there is currently a type of micro puree maker or ice cream maker on the market that integrates the stirring blade for crushing ice cubes into the cup lid, making the drive shaft and stirring blade detachable. This helps to simplify the assembly process between the stirring blade, drive shaft and cup lid when using the ice cream maker.

[0004] However, since the mixing blade and the drive shaft are only connected by a coupling structure, the vibration generated during the crushing process can easily lead to unstable connection between the mixing blade and the drive shaft. Furthermore, after prolonged use, the coupling structure on the drive shaft is prone to wear and failure, which in turn affects the stability of the connection between the mixing blade and the drive shaft. Replacing the entire drive shaft is a complicated process, and the cost of purchasing a new drive shaft is high. Utility Model Content

[0005] The main objective of this invention is to provide a cutting tool assembly and an ice cream machine, which aims to offer a cutting tool assembly with high connection stability.

[0006] To achieve the above objectives, the present invention proposes a cutting tool assembly applied to an ice cream machine, the ice cream machine including a rotary drive assembly, the cutting tool assembly comprising: A drive shaft extends in the vertical direction and is driven to connect with the rotary drive assembly. The drive shaft includes a main rod and a first magnetic element disposed at the lower end of the main rod, and the lower end of the drive shaft is also provided with a first connecting assembly. A stirring blade assembly includes a blade shaft and a blade body connected together. The blade body is provided with multiple blades. The blade shaft is provided with a second magnetic element. The end face of the blade shaft away from the blade body is provided with a connecting hole. The wall of the connecting hole is provided with a second connecting component. The second connecting component is connected to the first connecting component. The second magnetic element and the first magnetic element are magnetically connected to each other to connect the blade shaft and the drive shaft.

[0007] In one embodiment, the main rod is detachably connected to the first magnetic element.

[0008] In one embodiment, the second magnetic element includes a magnet, and the first magnetic element is configured to be made of a magnetic metal.

[0009] In one embodiment, the first connecting component includes a plurality of first oblique protrusions arranged around the axis of the drive shaft, the first oblique protrusions extending circumferentially around the drive shaft in the height direction; the second connecting component includes a plurality of second oblique protrusions arranged around the axis of the coupling hole, the second oblique protrusions extending circumferentially around the coupling hole in the extension direction of the coupling hole, and one second oblique protrusion is capable of coupling connection with two adjacent first oblique protrusions.

[0010] In one embodiment, the main rod is connected to the first magnetic component via a threaded connection.

[0011] In one embodiment, the second magnetic element is exposed on the bottom wall of the connecting hole.

[0012] In one embodiment, the cutter shaft is further provided with a weight reduction hole, which is located at the end of the magnetic component away from the connecting hole, and the diameter of the weight reduction hole is smaller than the diameter of the second magnetic component.

[0013] In one embodiment, the weight-reducing hole within the cutter shaft extends from the end face of the magnetic element away from the connecting hole to the cutter body.

[0014] In one embodiment, the ice cream machine includes a cup assembly and a lid assembly covering the cup assembly. The lid assembly is engaged with the cutter shaft via a resilient retaining bead. The outer side of the cutter shaft is provided with a retaining groove that engages with the resilient retaining bead. The retaining groove is arranged around the circumference of the cutter shaft and connected end to end.

[0015] This utility model also proposes an ice cream machine, comprising: The housing includes a cup holder disposed within the housing; Tool assembly; A rotary drive assembly is disposed in the housing and drives the drive shaft to rotate about the axis of the drive shaft; A cup assembly, comprising a cup body and a lid assembly disposed on the cup body, wherein the cup assembly is detachably connected to the cup base, and the cutter shaft is detachably connected to the lid assembly; A lifting drive assembly is disposed in the housing and connected to the cup holder to drive the cup holder to move in the vertical direction. The cutter shaft has a working state, a standby state, and a disassembled state. In the working state, the cutter shaft is connected to the drive shaft and separated from the cover assembly. The cutter body is located inside the cup body, and the cup body moves vertically relative to the cutter body. In the standby state, the cutter shaft is connected to the drive shaft and connected to the cover assembly. In the disassembled state, the cutter shaft is separated from the drive shaft.

[0016] The technical solution of this utility model forms a double-fixed connection structure by mechanically connecting the drive shaft and the cutter shaft through a first connecting component and a second connecting component, combined with the magnetic attraction of a first magnetic component and a second magnetic component. The first and second connecting components ensure efficient transmission of the rotational power of the drive shaft to the cutter shaft, preventing slippage. The magnetic attraction, through magnetic pre-fixation, enhances the axial fit between the drive shaft and the cutter shaft, preventing separation of the cutter shaft and drive shaft during high-speed rotation. This is particularly suitable for scenarios where resistance fluctuations may occur during ice cream ingredient mixing, ensuring continuous and stable operation and improving the connection stability between the mixing blade assembly and the drive shaft during the material crushing process. The tight cooperation between the first and second magnetic components, as well as the first and second connecting components, helps reduce power transmission loss, ensuring that the rotational power of the drive shaft is directly and evenly transmitted to the cutter shaft, driving the blades to mix efficiently and avoiding uneven mixing caused by loose connections. The magnetic connection between the cutter shaft and the drive shaft has a certain buffering effect, absorbing slight vibrations during rotation and reducing mechanical collision noise. Simultaneously, the tightness of the double connection reduces abnormal noises caused by loose components, making the ice cream machine operate more quietly and smoothly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the ice cream machine provided by this utility model; Figure 2 for Figure 1 A partial cross-sectional view of the embodiment shown; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4This is a cross-sectional view of the stirring blade assembly in the cutting tool assembly provided by this utility model; Figure 5 This is a partial structural diagram of the cutting tool assembly provided by this utility model.

[0019] Explanation of icon numbers: 11. Cover assembly; 123. Elastic retaining bead; 15. Stirring blade assembly; 151. Blade shaft; 152. Blade body; 153. Blade; 155. Second magnetic component; 156. Connecting hole; 157. Second connecting assembly; 157a. Second inclined rib protrusion; 157b. Second abutting inclined surface; 158. Weight reduction hole; 159. Snap-fit ​​groove; 200. Cup assembly; 201. Cup body; 300. Casing; 400, cup holder; 500. Rotary drive assembly; 600. Lifting drive assembly; 700, drive shaft; 71, main rod; 72, first magnetic component; 721, first connecting assembly; 721a, first inclined protrusion; 721b, first abutting inclined surface.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "second" or "first," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "second" or "first" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] This utility model proposes a cutting tool assembly.

[0025] Please see Figures 1 to 5 In one embodiment of this utility model, the cutter assembly is applied to an ice cream machine, which includes a rotary drive assembly 500, and the cutter assembly includes: The drive shaft 700 extends in the vertical direction and is driven to connect with the rotary drive assembly 500. The drive shaft 700 includes a main rod 71 and a first magnetic element 72 disposed at the lower end of the main rod 71. The lower end of the drive shaft 700 is also provided with a first connecting assembly 721. The stirring blade assembly 15 includes a blade shaft 151 and a blade body 152 connected to each other. The blade body 152 is provided with a plurality of blades 153. The blade shaft 151 is provided with a second magnetic element 155. The end face of the blade shaft 151 away from the blade body 152 is provided with a connecting hole 156. The hole wall of the connecting hole 156 is provided with a second connecting component 157. The second connecting component 157 is connected to a first connecting component 721. The second magnetic element 155 and the first magnetic element 72 are magnetically connected to connect the blade shaft 151 and the drive shaft 700.

[0026] The technical solution of this utility model forms a double-fixed connection structure by mechanically connecting the drive shaft 700 and the cutter shaft 151 through the first connecting component 721 and the second connecting component 157, and magnetically connecting the first magnetic component 72 and the second magnetic component 155. The first connecting component 721 and the second connecting component 157 can ensure that the rotational power of the drive shaft 700 is efficiently transmitted to the cutter shaft 151 to avoid slippage; the magnetic connection enhances the axial fit between the drive shaft 700 and the cutter shaft 151 through magnetic pre-fixation, preventing the cutter shaft 151 from separating from the drive shaft 700 during high-speed rotation. This is especially suitable for scenarios where resistance fluctuations may occur when mixing ice cream ingredients, ensuring continuous and stable operation, and improving the connection stability between the mixing blade assembly 15 and the drive shaft 700 during the crushing of materials by the mixing blade assembly 15. The tight fit between the first magnetic component 72 and the second magnetic component 155, as well as the first connecting assembly 721 and the second connecting assembly 157, helps reduce power transmission loss and ensures that the rotational power of the drive shaft 700 is directly and evenly transmitted to the cutter shaft 151, driving the blades 153 to stir efficiently and avoiding uneven stirring caused by loose connections. The magnetic connection between the cutter shaft 151 and the drive shaft 700 has a certain buffering effect, absorbing slight vibrations during rotation and reducing mechanical collision noise; at the same time, the tightness of the double connection reduces abnormal noise caused by loose parts, making the ice cream machine operate more quietly and smoothly.

[0027] In one embodiment, the main rod 71 of the drive shaft 700 and the first magnetic component 72 are detachable. If the magnetic component weakens due to long-term use, or if the first connecting component 721 wears out due to long-term material crushing, it is not necessary to replace the entire drive shaft 700; only the first magnetic component 72 needs to be replaced, thus reducing the cost of parts and facilitating user operation without requiring specialized repair personnel. Similarly, if the second connecting component 157 or the blade body 152 on the blade shaft 151 is damaged, the stirring blade assembly 15 can be replaced separately without repairing the drive shaft 700, thus reducing the overall maintenance cost of the machine.

[0028] In one embodiment, the first magnetic component 72 includes a magnetic casting, and the first connecting assembly 721 is formed on the magnetic casting. Casting is a method of pouring liquid metal into a casting cavity adapted to the shape of the part, and then allowing it to cool and solidify to obtain a part or blank. That is, the first connecting assembly 721 is formed on the first magnetic component 72 by casting, which can reduce the technical cost required to process the first connecting assembly 721. In other embodiments, the first connecting assembly 721 may also be formed on the first magnetic component 72 by a machining process.

[0029] In one embodiment, the second magnetic element 155 includes a magnet, and the first magnetic element 72 is made of a magnetic metal. This allows for a large magnetic attraction between the first magnetic element 72 and the second magnetic element 155. Further, the first magnetic element 72 may be made of neodymium iron boron magnets, samarium cobalt magnets, alnico magnets, etc.

[0030] In one embodiment, the first connecting assembly 721 includes a plurality of first oblique protrusions 721a arranged around the axis of the drive shaft 700, the first oblique protrusions 721a extending circumferentially around the drive shaft 700 in the height direction; the second connecting assembly 157 includes a plurality of second oblique protrusions 157a arranged around the axis of the coupling hole 156, the second oblique protrusions 157a extending circumferentially around the coupling hole 156 in the extension direction of the coupling hole 156, and one second oblique protrusion 157a can be coupled to two adjacent first oblique protrusions 721a. When the drive shaft 700 rotates, torque is transmitted to the second oblique protrusions 157a through the first oblique protrusions 721a to drive the rotation of the cutter shaft 151. That is, by alternately coupling multiple first oblique protrusions 721a and second oblique protrusions 157a along the circumference of the drive shaft 700, multiple sets of contact tooth surfaces are formed, avoiding deformation or breakage between the first connecting component 721 and the second connecting component 157 due to local stress concentration between the blade shaft 151 and the drive shaft 700 during the material crushing process of the stirring blade assembly 15. In other embodiments, the first connecting component 721 and the second connecting component 157 may include other coupling structures, which are not limited here.

[0031] Furthermore, the first oblique protrusion 721a has a first abutting slope 721b at one end near the second oblique protrusion 157a, and the second oblique protrusion 157a has a second abutting slope 157b at one end near the first oblique protrusion 721a. During the process of assembling the cutter shaft 151 with the drive shaft 700, the drive shaft 700 extends into the mating hole 156 on the cutter shaft 151. The first abutting slope 721b on the first oblique protrusion 721a and the second abutting slope 157b on the second oblique protrusion 157a abut against each other, so that the first oblique protrusion 721a can be guided between two adjacent second oblique protrusions 157a and abut against the second oblique protrusions 157a. Therefore, when installing the cutter shaft 151 and the drive shaft 700, the first magnetic element 72 and the second magnetic element 155 can pre-position the cutter shaft 151 and the drive shaft 700. The first inclined protrusion 721a and the second inclined protrusion 157a can guide the two to automatically rotate and align. During use, the user does not need to precisely align the installation angle between the cutter shaft 151 and the drive shaft 700; simply bringing the cutter shaft 151 and the drive shaft 700 closer together will allow the first inclined protrusion 721a and the second inclined protrusion 157a to couple. In other embodiments, the first abutting inclined surface 721b and the second abutting inclined surface 157b may not be provided.

[0032] In one embodiment, the main rod 71 and the first magnetic component 72 are connected by a thread. Therefore, by screwing on the first magnetic component 72, the first magnetic component 72 can be detached and assembled from the main rod 71, making the operation simple and easy for users to understand and operate. In other embodiments, the main rod 71 and the first magnetic component 72 can also be connected by a snap-fit ​​or fastener.

[0033] In one embodiment, the second magnetic element 155 is exposed on the bottom wall of the connecting hole 156. This enhances the magnetic connection between the second magnetic element 155 and the first magnetic element 72, making it less likely for the cutter shaft 151 and the drive shaft 700 to detach axially. In other embodiments, the second magnetic element 155 may be embedded in the bottom of the connecting hole 156, or it may be exposed on the side wall of the connecting hole 156.

[0034] In one embodiment, the cutter shaft 151 is further provided with a weight-reduction hole 158, which is located at the end of the magnetic component away from the connecting hole 156. The diameter of the weight-reduction hole 158 is smaller than the diameter of the second magnetic component 155. The weight-reduction hole 158 reduces the material required to produce the stirring blade assembly 15, thereby reducing the weight of the stirring blade assembly 15 and achieving a lightweight design while maintaining sufficient structural strength. Due to the reduced weight of the stirring blade assembly 15, the magnetic attraction between the first magnetic component 72 and the second magnetic component 155 can more easily maintain the state of the cutter shaft 151 mounted on the drive shaft 700. In other embodiments, the weight-reduction hole 158 may not be provided.

[0035] In one embodiment, a weight-reducing hole 158 within the cutter shaft 151 extends from the end face of the magnetic component away from the connecting hole 156 to the cutter body 152, thereby more effectively reducing the weight of the stirring blade assembly 15. In other embodiments, the weight-reducing hole 158 may extend from the end face of the magnetic component away from the connecting hole 156 to the middle or bottom of the cutter shaft 151.

[0036] In one embodiment, the ice cream machine includes a cup assembly 200 and a cover assembly 11 covering the cup assembly 200. The cover assembly 11 is engaged with the cutter shaft 151 by a flexible retaining bead 123. The outer side of the cutter shaft 151 is provided with a retaining groove 159 that engages with the flexible retaining bead 123. The retaining groove 159 surrounds the circumference of the cutter shaft 151 and is connected end to end.

[0037] On the ice cream machine, multiple elastic retaining beads 123 in the central receiving hole of the cover assembly 11 are engaged with the blade shaft 151 of the mixing blade assembly 15 to fix the mixing blade assembly 15 on the cover assembly 11. When the elastic retaining beads 123 are engaged with the side wall of the groove 159 on the blade shaft 151, the retaining beads are located at the opening of the connecting tube and extend into the groove 159. At this time, the retaining beads can move in the groove 159, that is, the blade shaft 151 can rotate around the axis of the central receiving hole in the central receiving hole. During the assembly of the cover assembly 11, the drive shaft 700 is inserted into the central receiving hole, allowing it to connect with the cutter shaft 151. When the ice cream machine is started, the cup body 201 moves upward relative to the drive shaft 700. At this time, the drive shaft 700 exerts downward pressure on the cutter shaft 151 within the central receiving hole, enabling coupling between the first oblique protrusion 721a and the second oblique protrusion 157a. During coupling, the first oblique protrusion 721a presses against the second oblique protrusion 157a, causing the cutter shaft 151 to rotate on the cover assembly 11. The first oblique protrusion 721a can slide between two adjacent second oblique protrusions 157a, and after the lower end face of the drive shaft 700 approaches the bottom surface of the connecting hole 156, the magnetic connection between the first magnetic component 72 and the second magnetic component 155 is completed. The cutter shaft 151 and the drive shaft 700 are then assembled. At this time, the drive shaft 700 exerts downward pressure on the cutter shaft 151, causing the cutter shaft 151 to disengage from the elastic retaining ball 123 on the cover assembly 11 and enter the cup body 201 of the ice cream machine to crush the material in the cup body 201; after crushing the material in the cup body 201, the cup body 201 moves downward relative to the cutter shaft 151, causing the cutter shaft 151 to move closer to the cover assembly 11 within the cup body 201, and when the cutter shaft 151 moves to the central receiving hole... When the cutter shaft 151 is engaged by the elastic retaining bead 123, and the cutter shaft 151 is assembled with the cover assembly 11, the drive shaft 700 and the cutter shaft 151 can be detached. At this time, the drive shaft 700 moves upward out of the engagement hole 156, the first oblique protrusion 721a presses upward against the second oblique protrusion 157a, and drives the cutter shaft 151 to rotate on the cover assembly 11, so that the first oblique protrusion 721a can slide out of the two adjacent second oblique protrusions 157a and move out of the central receiving hole. In other embodiments, the elastic retaining bead 123 may not be provided, and the cutter shaft 151 may be detachably assembled on the cover assembly 11 through other connecting components. Other connecting structures are not limited here.

[0038] This utility model also proposes an ice cream machine, which includes a housing 300, a rotary drive assembly 500, a lifting drive assembly 600, and a blade assembly. The specific structure of the blade assembly is as described in the above embodiments. Since this ice cream machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The housing 300 includes a cup holder 400 disposed within the housing 300; the rotary drive assembly 500 is disposed in the housing 300 and drives the drive shaft 700 to rotate around the axis of the drive shaft 700; the cup assembly 200 includes a cup body 201 and a cover assembly 11 covering the cup body 201, the cup assembly 200 and the cup holder 400 are detachably connected, and the blade shaft 151 and the cover assembly 11 are detachably connected; the lifting drive assembly 600 is disposed in the housing 300 and connected to the cup holder 400 to drive... The cup holder 400 moves vertically. The blade shaft 151 has a working state, a standby state, and a disassembled state. In the working state, the blade shaft 151 is connected to the drive shaft 700 and separated from the cover assembly 11. The blade body 152 is located inside the cup body 201, and the cup body 201 moves vertically relative to the blade body 152. In the standby state, the blade shaft 151 is connected to the drive shaft 700 and the cover assembly 11. In the disassembled state, the blade shaft 151 is separated from the drive shaft 700. That is, in the ice cream machine proposed in this utility model, the cup assembly 200 is driven by the lifting drive assembly 600 and moves vertically. The drive shaft 700 is driven by the rotation drive assembly 500, which drives the stirring blade assembly 15 to rotate. Along with the lifting and lowering movement of the cup assembly 200, the stirring blade assembly 15 can be assembled with the drive shaft 700 through the first connecting assembly 721, the second connecting assembly 157, and the first magnetic component 72 and the second magnetic component 155.

[0039] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A blade assembly for use in an ice cream machine, the ice cream machine including a rotary drive assembly, characterized in that, The cutting tool assembly includes: A drive shaft extends in the vertical direction and is driven to connect with the rotary drive assembly. The drive shaft includes a main rod and a first magnetic element disposed at the lower end of the main rod, and the lower end of the drive shaft is also provided with a first connecting assembly. A stirring blade assembly includes a blade shaft and a blade body connected together. The blade body is provided with multiple blades. The blade shaft is provided with a second magnetic element. The end face of the blade shaft away from the blade body is provided with a connecting hole. The wall of the connecting hole is provided with a second connecting component. The second connecting component is connected to the first connecting component. The second magnetic element and the first magnetic element are magnetically connected to each other to connect the blade shaft and the drive shaft.

2. The cutting tool assembly as claimed in claim 1, characterized in that, The main rod is detachably connected to the first magnetic component.

3. The cutting tool assembly as described in claim 2, characterized in that, The second magnetic component includes a magnet, and the first magnetic component is made of a magnetic metal.

4. The cutting tool assembly as claimed in claim 2, characterized in that, The first connecting component includes a plurality of first oblique protrusions arranged around the axis of the drive shaft, the first oblique protrusions extending circumferentially around the drive shaft in the height direction; the second connecting component includes a plurality of second oblique protrusions arranged around the axis of the coupling hole, the second oblique protrusions extending circumferentially around the coupling hole in the extension direction of the coupling hole, and one second oblique protrusion can be coupled to two adjacent first oblique protrusions.

5. The cutting tool assembly as claimed in claim 2, characterized in that, The main rod is connected to the first magnetic component by a thread.

6. The cutting tool assembly as claimed in claim 1, characterized in that, The second magnetic element is exposed on the bottom wall of the connecting hole.

7. The cutting tool assembly as claimed in claim 6, characterized in that, The cutter shaft is also provided with a weight reduction hole, which is located at the end of the magnetic component away from the connecting hole, and the diameter of the weight reduction hole is smaller than the diameter of the second magnetic component.

8. The cutting tool assembly as claimed in claim 7, characterized in that, The weight-reducing hole within the cutter shaft extends from the end face of the magnetic component away from the connecting hole to the cutter body.

9. The cutting tool assembly as claimed in claim 1, characterized in that, The ice cream machine includes a cup assembly and a lid assembly covering the cup assembly. The lid assembly is engaged with the cutter shaft by a flexible retaining bead. The outer side of the cutter shaft is provided with a retaining groove that engages with the flexible retaining bead. The retaining groove is arranged around the circumference of the cutter shaft and connected end to end.

10. An ice cream machine, characterized in that, include: The housing includes a cup holder disposed within the housing; The cutting tool assembly as described in any one of claims 1 to 9; A rotary drive assembly is disposed in the housing and drives the drive shaft to rotate about the axis of the drive shaft; A cup assembly, comprising a cup body and a lid assembly disposed on the cup body, wherein the cup assembly is detachably connected to the cup base, and the cutter shaft is detachably connected to the lid assembly; A lifting drive assembly is disposed in the housing and connected to the cup holder to drive the cup holder to move in the vertical direction. The cutter shaft has a working state, a standby state, and a disassembled state. In the working state, the cutter shaft is connected to the drive shaft and separated from the cover assembly. The cutter body is located inside the cup body, and the cup body moves vertically relative to the cutter body. In the standby state, the cutter shaft is connected to the drive shaft and connected to the cover assembly. In the disassembled state, the cutter shaft is separated from the drive shaft.

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