Grinding device of bean grinder

Abstract

The utility model discloses a grinding device of a bean grinder. The grinding device comprises a grinding assembly and a power assembly, the grinding assembly comprises a shell, a movable cutter head assembly and a fixed cutter head assembly. The movable cutter head is provided with a first blade face and a first side face A. The first side face A is provided with a first blind hole. A first screw hole is formed in the movable cutter head bracket, and a first screw is locked in the first screw hole and the first blind hole; the fixed cutter head is provided with a second blade surface and a first side surface B; a second blind hole is formed in the first side surface B; a second screw hole is formed in a bottom plate of the fixed cutter head bracket; a second screw is locked in the second screw hole and the second blind hole; the first screw is installed on the side of the movable cutter support, no screw hole exists on the first blade face of the movable cutter, the second screw is installed on the side of the fixed cutter support, no screw hole exists on the second blade face of the fixed cutter, the integrity of the first blade face of the movable cutter and the integrity of the second blade face of the fixed cutter are kept, and the grinding performance is improved. The problem that coffee powder is easy to remain in a screw hole of a traditional structure is solved, and user experience is better.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee bean grinders, and more particularly to a grinding device of a coffee bean grinder. Background Art

[0002] A coffee bean grinder is a device that grinds coffee beans into powder for convenient coffee extraction. The coffee bean grinder has a grinding system, which includes a moving blade assembly and a fixed blade assembly, and a grinding gap is formed between the moving blade assembly and the fixed blade assembly; both the moving blade assembly and the fixed blade assembly have blades and brackets, and the moving blade assembly is driven to rotate by a driving device, and the coffee beans are ground into powder by the relative movement of the blades between the moving blade assembly and the fixed blade assembly, such as a grinding blade assembly of Chinese Patent No. 202120965645.4, wherein the male and female blades are respectively provided with fixing holes, which are installed on their respective fixing seats through the fixing holes, and the fixing holes pass through the blade surfaces and back surfaces of the male and female blades. After assembly, the screw heads of the screws remain on the blade surfaces of the male and female blades, destroying the integrity of the blade edge of the blade, reducing the grinding performance of the blade, and affecting the overall performance of the coffee bean grinder to a certain extent. In addition, coffee powder is easily left at the screw hole position, which will cause residual powder and powder storage problems, causing inconvenience to subsequent cleaning work and affecting the user experience. Utility Model Content

[0003] In view of this, the utility model provides a grinding device for a coffee bean grinder.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the grinding device of the coffee bean grinder comprises: a grinding assembly and a power assembly; the grinding assembly comprises:

[0005] case;

[0006] A movable cutter disc assembly comprises a movable cutter disc and a movable cutter disc bracket;

[0007] A fixed cutter disc assembly comprises a fixed cutter disc and a fixed cutter disc bracket;

[0008] A grinding gap is formed between the movable cutter disc and the fixed cutter disc;

[0009] The movable cutter disc has a first blade surface and a first side surface A, the first blade surface and the first side surface A are opposite to each other, and the first side surface A is provided with a first blind hole; the movable cutter disc bracket is provided with a first screw hole, and the first screw is locked in the first screw hole and the first blind hole to fix the movable cutter disc and the movable cutter disc bracket;

[0010] The fixed cutter disc has a second blade surface and a first side surface B, the second blade surface and the first side surface B are opposite to each other, and a second blind hole is provided on the first side surface B; a second screw hole is provided on the bottom plate of the fixed cutter disc bracket, and a second screw is locked in the second screw hole and the second blind hole to fix the fixed cutter disc and the fixed cutter disc bracket;

[0011] The present technology improves the connection structure between the moving cutter disc and the moving cutter disc bracket, and the fixed cutter disc and the fixed cutter disc bracket, and changes the traditional through holes on the fixed cutter disc and the moving cutter disc into blind holes. During assembly, the first screw is installed from the side of the moving cutter disc bracket, and there is no screw hole on the first cutting edge of the moving cutter disc; the second screw is installed from the side of the fixed cutter disc bracket, and there is no screw hole on the second cutting edge of the fixed cutter disc. The integrity of the first cutting edge of the moving cutter disc and the second cutting edge of the fixed cutter disc is maintained, which improves the grinding performance to a certain extent, and improves the problem of residual coffee powder in the screw holes of the traditional structure, providing a better user experience.

[0012] As a preferred solution of the utility model, the fixed blade disc bracket is cylindrical, and a receiving cavity is formed inside; the outer wall surface radially protrudes to form a first supporting edge, and a third screw hole is provided on the first supporting edge;

[0013] The housing is provided with a second supporting edge, and the second supporting edge is provided with a fourth screw hole;

[0014] The fixed blade bracket is installed on the front side of the shell, the first supporting edge and the second supporting edge are in conflict with each other, and the third screw is locked in the third screw hole and the fourth screw hole to fix the fixed blade bracket and the shell;

[0015] In this technology, after the fixed blade disc bracket and the shell are assembled, the first supporting edge and the second supporting edge are locked by the third screw, the fixed blade disc bracket and the shell are assembled stably, and the first supporting edge and the second supporting edge are both located outside the chamber and will not hide powder.

[0016] As a preferred solution of the utility model, a chamber for accommodating the fixed blade disc bracket is provided on the front side of the shell, and the second supporting edge is formed by radially protruding around the opening of the chamber.

[0017] As a preferred solution of the utility model, the movable cutter disc is arranged in an annular shape, and the movable cutter disc bracket comprises: a main body bracket and a screw rod arranged at the center of the main body bracket, and an axial hole is arranged at the center of the screw rod;

[0018] The fixed cutter disc is arranged in an annular shape, and the bottom plate of the fixed cutter disc bracket is provided with a through hole;

[0019] The screw of the movable cutter disc bracket passes through the through holes of the movable cutter disc, the fixed cutter disc and the fixed cutter disc bracket and is connected to the power assembly;

[0020] After the movable cutter disc bracket is connected to the power assembly, the movable cutter disc assembly is located in the receiving cavity of the fixed cutter disc bracket, and the first cutting edge of the movable cutter disc is opposite to the second cutting edge of the fixed cutter disc; the specific structure of the movable cutter disc assembly is defined in the present technology, and during assembly, the screw of the movable cutter disc bracket is plugged into the motor shaft, and the assembly method is simple. After assembly, the motor shaft drives the movable cutter disc assembly to rotate, and cooperates with the fixed cutter disc assembly to grind coffee beans.

[0021] As a preferred solution of the utility model, the power assembly includes a motor;

[0022] A groove body is arranged at the rear side of the housing, and a bearing is arranged in the groove body;

[0023] The motor is installed on the rear side of the housing, and the motor shaft of the motor passes through the bearing and is inserted into the screw of the movable cutter disc bracket; in this technology, the bearing assists the rotation of the motor shaft and reduces the friction between the motor shaft and the housing.

[0024] As a preferred solution of the utility model, a screw spring is arranged in the axial hole of the screw rod, and the screw spring is sleeved outside the motor shaft. The screw spring provides a rebound force for the movable cutter disc assembly, so that the movable cutter disc can maintain rebound and maintain an active gap with the fixed cutter disc.

[0025] As a preferred solution of the utility model, the motor shaft is provided with a key slot, and the shaft hole of the screw is provided with a limit slot; the motor shaft is inserted into the shaft hole, and the limit key is clamped in the key slot and the limit slot, so that the motor shaft drives the screw to rotate; in this technology, the movable cutter disc assembly and the motor shaft are detachable, and the movable cutter disc bracket is connected to the motor shaft when the bean grinding action needs to be performed. After the bean grinding is completed, the movable cutter disc bracket and the motor shaft are separated for easy cleaning.

[0026] As a preferred solution of the utility model, the axial hole passes through the main body bracket, and an axial hole opening is formed on the main body bracket, and the limit groove is connected to the axial hole opening; the limit key enters from the axial hole opening and is clamped in the key groove and the limit groove; when the movable cutter disc bracket and the motor shaft are assembled in the present technology, the screw rod is first plugged into the motor shaft, and then the limit key is installed, and when the knob assembly is subsequently installed, the limit key is confined in the key groove and the limit groove.

[0027] As a preferred solution of the utility model, the shell is provided with a feed inlet and a discharge port, and the feed inlet and the discharge port are both connected to the chamber;

[0028] The fixed blade disc support is provided with a powder outlet, and the fixed blade disc support is installed in the chamber, and the powder outlet corresponds to the material outlet; the ground coffee powder finally falls into the powder cup through the material outlet.

[0029] Other beneficial technical effects of the utility model are embodied in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of a coffee grinder;

[0032] Figure 2 is a cross-sectional schematic diagram of a coffee grinder;

[0033] Figure 3 It is a cross-sectional schematic diagram of a grinding device of a coffee bean grinder;

[0034] Figure 4 This is an exploded view of the grinder;

[0035] Figure 5 The exploded view of the moving cutter head assembly;

[0036] Figure 6 This is a schematic diagram of the moving cutter head assembly being assembled;

[0037] Figure 7 This is an exploded view of the fixed cutter head assembly;

[0038] Figure 8 This is a schematic diagram of the fixed cutter disc assembly being assembled;

[0039] Fig. 9 It is a schematic diagram of the assembly of the fixed cutter disc assembly and the housing.

[0040] Description of Reference Numerals

[0041] Body 01; powder cup 02; shell 100; chamber 101; feed port 102; discharge port 103; second support edge 110; fourth screw hole 111; third screw 120; bearing 130; movable cutter assembly 200; movable cutter 210; first blade surface 211; first side surface A212; first blind hole 2121; movable cutter bracket 220; first screw hole 221; screw 222; shaft hole 2221; screw spring 2222; limit groove 2223; main bracket 223; shaft hole opening 2231 ; first screw 230; fixed blade assembly 300; fixed blade 310; second blade surface 311; first side surface B312; second blind hole 3121; fixed blade bracket 320; bottom plate 321; through hole 3211; second screw hole 322; side circumference 323; threaded section 3231; first supporting edge 3232; third screw hole 3233; powder outlet 324; second screw 330; power assembly 400; motor shaft 410; key slot 411; limit key 420; knob assembly 500; knob 510. DETAILED DESCRIPTION

[0042] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0043] The grinding device of the bean grinder is used in the bean grinder, such as Figure 1 As shown, it has a body 01 and a powder cup 02, and the grinding device is located inside the body 01. Figure 2-4 As shown, the grinding device includes: a grinding assembly and a power assembly 400;

[0044] The grinding assembly includes: a housing 100, a movable cutter disc assembly 200 and a fixed cutter disc assembly 300;

[0045] like Figure 5-6 As shown, the movable cutter disc assembly 200 comprises a movable cutter disc 210 and a movable cutter disc bracket 220, the movable cutter disc 210 comprises a first blade surface 211 and a first side surface A212, the first blade surface 211 and the first side surface A212 are opposite to each other, and the first side surface A212 defines a first blind hole 2121; the movable cutter disc bracket 220 defines a first screw hole 221, and the first screw 230 is locked in the first screw hole 221 and the first blind hole 2121, so that the movable cutter disc 210 and the movable cutter disc bracket 220 are fixed;

[0046] Continue as Figure 5 As shown, the movable cutter disc 210 is arranged in an annular shape and can be made of a high-hardness metal material. A screw rod 222 is arranged at the center of the movable cutter disc bracket 220, and the screw rod 222 is connected to the power assembly 400. When the movable cutter disc 210 and the movable cutter disc bracket 220 are assembled, the screw rod 222 passes through the center of the movable cutter disc 210, and the first side surface A212 of the movable cutter disc 210 is closely attached to the side surface of the movable cutter disc bracket 220. At the same time, the first screw hole 221 corresponds to the first blind hole 2121, and the first screw 230 is inserted from one side of the movable cutter disc bracket 220 through the first screw hole 221 and then enters the first blind hole 2121, and the movable cutter disc 210 and the movable cutter disc bracket 220 are fixed by the first screw 230.

[0047] Optionally, three first blind holes 2121 are evenly arranged on the movable cutter disc 210, and the first blind holes 2121 are arranged and distributed in a circle around the axis of the movable cutter disc 210; the movable cutter disc bracket 220 is correspondingly provided with three first screw holes 221, so that the assembly is more stable;

[0048] Optionally, the number of the first blind holes 2121 and the first screw holes 221 may be changed;

[0049] After the moving cutter disc 210 and the moving cutter disc bracket 220 are assembled, Figure 6 As shown, there are no screw holes and exposed screws on the first blade surface 211 of the movable cutter disc 210, so the integrity of the first blade surface 211 is maintained, and the grinding effect is better. At the same time, it overcomes the problem of the traditional cutter disc structure in which the blade surface is provided with screw holes and screw nuts, which makes it easy to hide powder and difficult to clean.

[0050] like Figure 7-8As shown, the fixed cutter disc assembly 300 comprises a fixed cutter disc 310 and a fixed cutter disc bracket 320; the fixed cutter disc 310 comprises a second blade surface 311 and a first side surface B312, the second blade surface 311 and the first side surface B312 are opposite to each other, and a second blind hole 3121 is provided on the first side surface B312; a second screw hole 322 is provided on the bottom plate 321 of the fixed cutter disc bracket 320, and a second screw 330 is locked in the second screw hole 322 and the second blind hole 3121, so that the fixed cutter disc 310 and the fixed cutter disc bracket 320 are fixed;

[0051] Specifically, continue as Figure 7 As shown, the fixed blade disc 310 is arranged in an annular shape and can be made of a high-hardness metal material. The sizes of the fixed blade disc 310 and the movable blade disc 210 match each other; the fixed blade disc bracket 320 is cylindrical, and has a bottom plate 321 and a side enclosure 323. The fixed blade disc bracket 320 is surrounded by the bottom plate 321 and the side enclosure 323 to form a receiving cavity, and the bottom plate 321 is provided with a second screw hole 322; when installing, the first side surface B312 of the fixed blade disc 310 first enters the receiving cavity, the first side surface B312 is tightly attached to the bottom plate 321, and the second screw 330 is screwed in from the outside of the fixed blade disc bracket 320, that is, Figure 7 During installation on the middle right side, the second screw 330 is first inserted into the second screw hole 322 and then into the second blind hole 3121, and the fixed cutter disc 310 and the fixed cutter disc bracket 320 are fixed by the second screw 330;

[0052] Optionally, three second blind holes 3121 are evenly arranged on the fixed cutter disc 310, and the second blind holes 3121 are arranged circumferentially around the axis of the fixed cutter disc 310. The fixed cutter disc bracket 320 is correspondingly provided with three second screw holes 322, so that the assembly is more stable.

[0053] Optionally, the number of the second blind holes 3121 and the second screw holes 322 may be changed;

[0054] After the fixed blade disc 310 and the fixed blade disc bracket 320 are assembled, Figure 8 As shown, there are no screw holes and exposed screws on the second blade surface 311 of the fixed blade disc 310, which maintains the integrity of the second blade surface 311 and achieves a better grinding effect. At the same time, it overcomes the problem of screw holes and screw nuts on the blade surface in the traditional blade disc structure, which makes it easy to hide powder and difficult to clean.

[0055] like Figure 2 and Figure 3 As shown, after the movable cutter disc assembly 200 and the fixed cutter disc assembly 300 are assembled, a grinding gap is formed between the first cutting edge 211 of the movable cutter disc 210 and the second cutting edge 311 of the fixed cutter disc 310, and the coffee beans enter the grinding gap. The power assembly 400 drives the movable cutter disc 210 to rotate, and the fixed cutter disc 310 is stationary, so the movable cutter disc 210 and the fixed cutter disc 310 rotate relative to each other to grind the coffee beans into coffee powder.

[0056] In one embodiment, the fixed blade assembly 300 is mounted on the housing 100. Fig. 9 As shown, a chamber 101 is formed on the front side of the housing 100, and the diameter of the chamber 101 matches the outer diameter of the side circumference 323 of the fixed blade disc support 320. After the fixed blade disc support 320 is installed on the housing 100, the fixed blade disc support 320 is partially accommodated in the chamber 101, and the bottom plate 321 of the fixed blade disc support 320 contacts the inner bottom wall of the chamber 101;

[0057] Continue as Fig. 9 As shown, the side periphery 323 of the fixed blade disc support 320 is provided with a threaded section 3231 corresponding to the cavity opening position of the receiving cavity, and the threaded section 3231 is subsequently connected to the knob assembly 500, so that the fixed blade disc support 320 and the knob assembly 500 are connected;

[0058] The outer wall surface of the fixed blade disc bracket 320, i.e., the side circumference 323, radially protrudes to form a first supporting edge 3232, and the first supporting edge 3232 defines a third screw hole 3233; the housing 100 radially protrudes around the opening of the chamber 101 to form a second supporting edge 110, and the second supporting edge 110 defines a fourth screw hole 111;

[0059] During assembly, the fixed blade bracket 320 is installed on the front side of the housing 100, the first supporting edge 3232 and the second supporting edge 110 are in conflict with each other, and the third screw 120 is locked in the third screw hole 3233 and the fourth screw hole 111 to fix the fixed blade bracket 320 and the housing 110;

[0060] Four third screw holes 3233 are formed on the first supporting edge 3232, and similarly, four fourth screw holes 111 are formed on the second supporting edge 110; optionally, the number of the third screw holes 3233 and the fourth screw holes 111 can be changed;

[0061] After assembly, the third screw hole 3233, the fourth screw hole 111, and the third screw 120 are all located outside the chamber 101 and the receiving cavity. The third screw hole 3233 and the fourth screw hole 111 will not hide powder, and disassembly and assembly are more convenient.

[0062] In one embodiment, the movable cutter disc bracket 220 includes: a main bracket 223 and a screw rod 222 disposed at the center of the main bracket 223, and an axial hole 2221 is disposed at the center of the screw rod 222;

[0063] The bottom plate 321 of the fixed blade disc bracket 320 is provided with a through hole 3211;

[0064] During assembly, the screw 222 of the movable cutter disc bracket 220 passes through the movable cutter disc 210, the fixed cutter disc 310 and the through hole 3211 of the fixed cutter disc bracket 320 to be connected with the power assembly 400;

[0065] like Figure 3 As shown, after the movable cutter disc bracket 220 is connected to the power assembly 400, the movable cutter disc assembly 200 is located in the receiving cavity of the fixed cutter disc bracket 320, and the first blade surface 211 of the movable cutter disc 210 and the second blade surface 311 of the fixed cutter disc 310 are opposite to each other, forming a grinding gap; the power assembly 400 runs, driving the movable cutter disc assembly 200 to rotate, and the movable cutter disc 210 and the fixed cutter disc 310 rotate relative to each other to grind the coffee beans into coffee powder.

[0066] In one embodiment, the power assembly 400 includes a motor, a slot is provided at the rear side of the housing 100 , and the motor is installed at the rear side of the housing 100 .

[0067] like Figure 2 As shown, the motor may be fixed to the rear side of the housing 100, or may be fixed inside the fuselage 01 and fixed to the housing of the fuselage 01; a bearing 130 is installed in the slot, and the motor shaft 410 of the motor passes through the bearing 130 and is plugged into the screw 222;

[0068] Furthermore, the screw 222, the motor shaft 410, the fixed cutter disc 310, and the movable cutter disc 210 are coaxially assembled.

[0069] Furthermore, a screw spring 2222 is provided in the shaft hole 2221 of the screw rod 222 . The screw spring 2222 is sleeved outside the motor shaft 410 . The screw spring 2222 provides a rebound force for the movable cutter disc assembly 200 .

[0070] like Figure 2 and Figure 4 As shown, the knob assembly 500 is threadedly connected to the fixed blade disc bracket 320, and the knob assembly 500 is provided with a knob 510. The size of the grinding gap formed between the movable blade disc 210 and the fixed blade disc 310 is adjusted by turning the knob 510; and the screw spring 2222 provides a rebound force for the movable blade disc assembly 200, so that the movable blade disc 210 can maintain rebound and maintain a movable gap with the fixed blade disc 310.

[0071] Furthermore, the motor shaft 410 and the screw rod 222 of the movable cutter disc bracket 220 are detachably mounted. When performing the grinding operation, the movable cutter disc assembly 200 and the motor shaft 410 are connected. After the grinding is completed, the movable cutter disc assembly 200 is removed for easy cleaning.

[0072] Therefore, a key slot 411 is provided on the motor shaft 410, a limit slot 2223 is provided in the shaft hole 2221 of the screw rod 222, the motor shaft 410 is inserted into the shaft hole 2221, and the limit key 420 is clamped in the key slot 411 and the limit slot 2223, so that the motor shaft 410 drives the screw rod 222 to rotate.

[0073] like Figure 5As shown, the shaft hole 2221 passes through the main bracket 223, and a shaft hole opening 2231 is formed on the main bracket 223. The limit groove 2223 is connected to the shaft hole opening 2231. During installation, the motor shaft 410 is first inserted into the shaft hole 2221, and then the limit key 420 is inserted from the shaft hole opening 2231 and is clamped in the key groove 411 and the limit groove 2223. When the motor shaft 410 rotates, it drives the blade disc assembly 200 to rotate; after the knob assembly 500 is installed, the limit key 420 is prevented from detaching from the shaft hole opening 2231.

[0074] In one embodiment, the housing 100 is provided with a feed port 102 and a discharge port 103, and the feed port 102 and the discharge port 103 are both connected to the chamber 101. Fig. 9 As shown, the feed port 102 is disposed at a high position of the housing 100 , and the discharge port 103 is disposed at a low position of the housing 100 ;

[0075] For example Figure 8 As shown, the fixed blade disc bracket 320 is provided with a powder outlet 324, and the fixed blade disc bracket 320 is installed in the chamber 101. The powder outlet 324 corresponds to the material outlet 103. The coffee beans are fed from the material feed port 102, enter the grinding gap, and are ground into powder and then fed out from the material outlet 103 and collected in the powder cup 02.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The grinding device of the coffee grinder includes: Grinding components and power components; The grinding assembly includes: case; A movable cutter disc assembly comprises a movable cutter disc and a movable cutter disc bracket; A fixed cutter disc assembly comprises a fixed cutter disc and a fixed cutter disc bracket; A grinding gap is formed between the movable cutter disc and the fixed cutter disc; Features: The movable cutter disc has a first blade surface and a first side surface A, the first blade surface and the first side surface A are opposite to each other, and the first side surface A is provided with a first blind hole; the movable cutter disc bracket is provided with a first screw hole, and the first screw is locked in the first screw hole and the first blind hole to fix the movable cutter disc and the movable cutter disc bracket; The fixed cutter disc has a second blade surface and a first side surface B, the second blade surface and the first side surface B are opposite to each other, and a second blind hole is provided on the first side surface B; a second screw hole is provided on the bottom plate of the fixed cutter disc bracket, and a second screw is locked in the second screw hole and the second blind hole to fix the fixed cutter disc and the fixed cutter disc bracket.

2. The grinding device of the coffee bean grinder according to claim 1, characterized in that: The fixed blade disc support is cylindrical, and a receiving cavity is formed inside; the outer wall surface radially protrudes to form a first supporting edge, and a third screw hole is provided on the first supporting edge; The housing is provided with a second supporting edge, and the second supporting edge is provided with a fourth screw hole; The fixed blade disc bracket is installed on the front side of the shell, the first supporting edge and the second supporting edge are in conflict with each other, and the third screw is locked in the third screw hole and the fourth screw hole to fix the fixed blade disc bracket and the shell.

3. The grinding device of the coffee bean grinder according to claim 2, characterized in that: The front side of the shell is provided with a chamber for accommodating the fixed blade disc bracket, and the second supporting edge is formed by radially protruding around the opening of the chamber.

4. The grinding device of the coffee bean grinder according to claim 1, characterized in that: The movable cutter disc is arranged in an annular shape, and the movable cutter disc bracket comprises: a main body bracket and a screw rod arranged at the center of the main body bracket, and an axial hole is arranged at the center of the screw rod; The fixed cutter disc is arranged in an annular shape, and the bottom plate of the fixed cutter disc bracket is provided with a through hole; The screw of the movable cutter disc bracket passes through the through holes of the movable cutter disc, the fixed cutter disc and the fixed cutter disc bracket and is connected to the power assembly; After the movable cutter disc bracket is connected to the power assembly, the movable cutter disc assembly is located in the receiving cavity of the fixed cutter disc bracket, and the first cutting edge surface of the movable cutter disc is opposite to the second cutting edge surface of the fixed cutter disc.

5. The grinding device of the coffee bean grinder according to claim 4, characterized in that: The power assembly includes a motor; A groove body is arranged at the rear side of the housing, and a bearing is arranged in the groove body; The motor is installed on the rear side of the housing, and the motor shaft of the motor passes through the bearing and is inserted into the screw of the movable cutter disc bracket.

6. The grinding device of the coffee bean grinder according to claim 5, characterized in that: A screw spring is arranged in the axial hole of the screw rod, the screw spring is sleeved outside the motor shaft, and the screw spring provides a rebound force for the movable cutter disc assembly.

7. The grinding device of the coffee bean grinder according to claim 5, characterized in that: The motor shaft is provided with a key slot, and the shaft hole of the screw rod is provided with a limit slot; the motor shaft is inserted into the shaft hole, and the limit key is clamped in the key slot and the limit slot, so that the motor shaft drives the screw rod to rotate.

8. The grinding device of the coffee bean grinder according to claim 7, characterized in that: The shaft hole passes through the main body bracket, and an shaft hole opening is formed on the main body bracket. The limiting groove is connected to the shaft hole opening; the limiting key enters from the shaft hole opening and is clamped in the key groove and the limiting groove.

9. The grinding device of a coffee bean grinder according to claim 2, characterized in that: The shell is provided with a feed inlet and a discharge port, and the feed inlet and the discharge port are both connected to the chamber; The fixed blade disc support is provided with a powder outlet, and the fixed blade disc support is installed in the chamber, and the powder outlet corresponds to the material outlet.

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