Coffee grinding machine and method

Abstract

The invention provides a coffee grinding machine and method, and mainly relates to the field of coffee grinding equipment. The invention discloses a coffee grinding machine and method. The coffee grinding machine comprises a grinding device, a conveying mechanism, a storage mechanism and the like. The coffee grinding device has the beneficial effects that coffee grinding raw materials can be stored in the conveying pipe mechanism by arranging the material conveying mechanism, and the structure enables the coffee grinding raw materials to be stored around the device, so that the raw materials do not need to be added during grinding every time; furthermore, the device can store more coffee grinding raw materials through the designed shape of a material storage shell, and the device is convenient to carry, the rotatable grinding barrel is arranged, and preliminary grinding grooves are formed in the outer side of the grinding barrel and the inner side of the grinding shell; coffee grinding raw materials are pushed to the position between the outer side of the grinding barrel and the inner side of the grinding shell through the spring plate device, rotary grinding is further conducted through the grinding barrel, then the grinding raw materials are finely ground, the material blocking situation is reduced, the coffee grinding stroke is increased, the grinding fineness degree is increased, and the device material blocking situation is reduced.

Description

Technical Field

[0001] The present invention generally relates to the field of coffee grinding equipment, and more particularly to a coffee grinder and method. Background Art

[0002] Coffee is a beverage made from roasted and ground coffee beans. As one of the three major beverages in the world, it is popular in the world along with cocoa and tea. The coffee tree is a perennial evergreen shrub or small tree belonging to the Rubiaceae family. The coffee we drink daily is made from coffee beans with various cooking utensils. Coffee beans refer to the kernels inside the fruit of the coffee tree, which are then roasted using appropriate methods. As more and more people drink coffee, portable coffee machines have gradually come into people's view, allowing people to grind and brew coffee anytime and anywhere.

[0003] However, when adding materials to the existing portable coffee grinders, the hand crank handle and the end cover need to be removed together, and then an appropriate amount of coffee beans are poured in at once, which makes it inconvenient for people to add materials. The separate design of the hand crank handle and the grinding barrel can easily cause a part to be lost. At the same time, this structure leads to a limited number of coffee beans that can be put into the device at one time, and it is very inconvenient to add them each time grinding is performed. In addition, the grinding stroke of a general coffee grinding mechanism is limited and the coffee cannot be finely ground well. A portable coffee grinder and a coffee grinding method are now proposed. Summary of the invention

[0004] The object of the present invention is to provide a coffee grinder and method to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A coffee grinder comprises a grinding device, a feeding mechanism and a storage mechanism, wherein the bottom of the grinding device is fixedly connected and communicated with the upper part of the feeding mechanism, the upper part of the storage mechanism is sleeved on the bottom of the feeding mechanism and communicated with it, wherein the feeding mechanism comprises: A conveying pipe mechanism, the conveying pipe mechanism is installed between the grinding device and the material storage mechanism to connect the two; The spring plate mechanism is installed inside the feeding mechanism and is slidably connected with the conveying pipe mechanism.

[0006] As a preferred embodiment of the present invention, the delivery pipe mechanism comprises: A grinding material conveying pipe, wherein a plurality of shell connecting plates are fixedly arranged around the grinding material conveying pipe, and a spring plate sliding groove is provided on the side of the shell connecting plate; A material storage shell, which is sleeved on the outer periphery of the grinding and feeding pipe and fixedly connected to each of the shell connecting plates; a plurality of spring support rods are fixedly provided on the inner side of the upper portion of the material storage shell and are fixedly connected to the upper side of the grinding and feeding pipe; a feed pipe is fixedly provided on the bottom of the material storage shell, a pull rope fixing rod is fixedly provided inside the feed pipe and is fixedly connected to the outer side of the grinding and feeding pipe; a plurality of bolt holes are fixedly opened on the outer periphery of the upper portion of the material storage shell.

[0007] As a preferred embodiment of the present invention, the spring plate mechanism comprises: A tension spring, wherein the tension spring is fixedly arranged at the bottom of each of the spring support rods; Spring plates, a plurality of the spring plates are arranged between the grinding material conveying pipe and the material storage shell and are slidably connected to the two, and each of the spring plates is fixedly connected with a spring plate sliding block installed in the spring plate sliding groove and slidably connected thereto, and the upper portion of the spring plate is fixedly connected to the lower end portion of the tension spring; A curling pull rope is fixedly connected to the lower part of each spring plate and passes through the pull rope fixing rod to be slidably connected thereto. A limiting column is fixedly connected to the lower end of the curling pull rope.

[0008] As a preferred embodiment of the present invention, the grinding device comprises: A grinding shell, the grinding shell is sleeved on the outer periphery of the material storage shell, a plurality of bolts are fixedly arranged around the outer periphery of the grinding shell, penetrate the grinding shell and are threadedly connected with the bolt holes, a preliminary grinding barrel is fixedly arranged inside the grinding shell, and a preliminary grinding groove 1 is densely arranged around the inside of the preliminary grinding barrel; A grinding connecting pipe, which is arranged inside the grinding shell and inserted into the upper end of the grinding feed pipe, and a plurality of grinding connecting pipe support plates are fixedly arranged around the grinding connecting pipe and fixedly connected to the grinding shell; A fine grinding column, which is conical and fixedly arranged on the upper side of the grinding connection tube, and a fine grinding groove is densely arranged on the outer circumference of the fine grinding column, and a plurality of fine grinding column support rods are fixedly arranged around the fine grinding column and fixedly connected to the inner side of the grinding connection tube; A servo motor support plate, the servo motor support plate is fixedly arranged on the upper part of the grinding shell, a servo motor is fixedly arranged at the center of the upper part of the servo motor support plate, an output end of the servo motor passes through the servo motor support plate and is rotatably connected thereto, and a servo motor protection shell is fixedly arranged on the upper part of the support plate; A rotating grinding barrel is arranged inside the grinding shell, the rotating grinding barrel is inner-conical and the upper inner side is inclined, a plurality of motor connecting rods are fixedly arranged on the inner side of the upper part of the rotating grinding barrel and are fixedly connected to the output end of the servo motor, two preliminary grinding grooves are densely arranged around the outer periphery of the rotating grinding barrel, and two fine grinding grooves are fixedly arranged around the inner periphery of the rotating grinding barrel.

[0009] As a preferred embodiment of the present invention, the material storage mechanism comprises: A material storage barrel, which is sleeved on the outer circumference of the feed pipe and slidably connected thereto, a grinding feed pipe support plate is fixedly provided inside the material storage barrel, a grinding feed pipe is fixedly provided on the upper portion of the grinding feed pipe support plate and is connected to the material storage barrel, and the grinding feed pipe is inserted inside the grinding delivery pipe and is connected thereto.

[0010] The coffee grinder grinding method comprises the following steps: S1: moving the spring plate included in the spring plate mechanism out of the conveying tube mechanism and flipping the device to further add coffee ground material into the material storage shell; S2: applying a certain thrust to the coffee grinding material through the spring plate to make it move upward to the grinding device for grinding; S3: controlling the servo motor to drive the rotating grinding barrel so that the coffee ground materials entering the grinding device are initially ground with the primary grinding groove 1 and the primary grinding groove 2, and then the spring plate pushes the materials to move further into the rotating grinding barrel so that the materials are rotated in coordination with the fine grinding groove 1 and the fine grinding groove 2 to be finely ground into coffee powder; S4: After the grinding, the coffee powder is passed from the feeding mechanism to the storage mechanism for storage; S5: The coffee powder is removed from the storage mechanism and mixed with water or other drinkable liquid to form a coffee beverage for drinking.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. The feeding mechanism is provided so that the ground coffee materials can be stored in the conveying pipe mechanism, and the spring plate mechanism is provided to push the ground coffee materials to the top of the device for grinding. With this structure, the ground coffee materials can be stored around the device without adding materials every time grinding. Furthermore, the shape of the storage shell is designed so that the device can store more ground coffee materials for easy carrying, and the sealing setting prevents the ground coffee materials from being damp and affecting the flavor. 2. A grinding device is arranged on the upper part of the device to grind the coffee grinding material, a rotatable grinding barrel is arranged, and preliminary grinding grooves are arranged on the outer side of the grinding barrel and the inner side of the grinding shell, and the coffee ground materials are pushed to the outer side of the grinding barrel and the inner side of the grinding shell by a spring plate device, and further the grinding barrel is rotated and ground to perform preliminary grinding on the ground materials to reduce the occurrence of material jamming, and further the spring plate is used to push the preliminary ground materials into the grinding barrel, and further a fine grinding column is arranged inside the grinding barrel to cooperate with the preliminary ground materials to further finely grind the preliminary ground materials and finally discharge them from the grinding device and enter the storage mechanism for collection through the feeding mechanism, thereby improving the coffee grinding stroke and thus improving the grinding fineness, and reducing the occurrence of material jamming of the device by sequential fine grinding, thereby improving the overall grinding efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the structure of the conveying pipe mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the conveying pipe mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the grinding device of the present invention; Figure 6 It is a schematic diagram of the structure of the grinding device of the present invention; Figure 7 It is a schematic diagram of the structure of the rotary grinding barrel of the present invention; Figure 8 It is a schematic diagram of the structure of the material storage mechanism of the present invention; Fig. 9 It is a schematic diagram of the structure of the servo motor support plate of the present invention; Fig.10 Schematic diagram of the coffee grinding method of the present invention.

[0013] Numbers shown in the accompanying drawings: 10. Grinding device; 101. Grinding shell; 102. Bolt; 103. Preliminary grinding barrel; 104. Preliminary grinding groove 1; 105. Grinding connecting pipe; 106. Grinding connecting pipe support plate; 107. Fine grinding column; 108. Fine grinding groove 1; 109. Fine grinding column support rod; 1010. Servo motor support plate; 1011. Servo motor; 1012. Rotating grinding barrel; 1013. Motor connecting rod; 1014. Preliminary grinding groove 2; 1015. Fine grinding groove 2; 20. Feeding mechanism; 30. Material storage mechanism; 301. Material storage barrel; 302. Grinding feed pipe support plate; 303. Grinding feed pipe; 40, conveying pipe mechanism; 401, grinding conveying pipe; 402, shell connecting plate; 403, spring plate sliding groove; 404, storage shell; 405, spring support rod; 406, feeding pipe; 407, pull rope fixing rod; 408, bolt hole; 50. Spring plate mechanism; 501. Extension spring; 502. Spring plate; 503. Spring plate sliding block; 504. Curled pull rope; 505. Limiting column. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0015] See also Figure 1-Figure 10 A coffee grinder comprises a grinding device 10, a feeding mechanism 20 and a storage mechanism 30. The bottom of the grinding device 10 is fixedly connected and communicated with the upper part of the feeding mechanism 20. The upper part of the storage mechanism 30 is sleeved on the bottom of the feeding mechanism 20 and communicated with it. The feeding mechanism 20 comprises a conveying pipe mechanism 40. The conveying pipe mechanism is installed between the grinding device 10 and the storage mechanism 30 to connect the two. A spring plate mechanism 50 is installed inside the feeding mechanism 20 and is slidably connected with the conveying pipe mechanism 40.

[0016] The above working principle: when the coffee raw materials need to be ground, the storage mechanism 30 is first removed from the bottom of the feeding mechanism 20, and the ground coffee raw materials are further placed in the conveying pipe mechanism 40 included in the feeding mechanism 20 for storage. During the storage process, the spring plate 502 included in the spring plate mechanism 50 needs to be moved out of the conveying pipe mechanism 40 and the device is turned over to further add the ground coffee raw materials. Then, the spring plate 502 can be used to give the ground coffee raw materials a certain thrust to move them upward to the grinding device 10 for grinding. After being ground by the preliminary grinding mechanism and the fine grinding mechanism provided in the grinding device 10, coffee powder is formed. The ground coffee powder is further passed from the feeding mechanism 20 into the storage mechanism 30 for storage and use.

[0017] Specific reference Figure 2-4The conveying pipe mechanism 40 includes a grinding and conveying pipe 401 and a material storage shell 404. A plurality of shell connecting plates 402 are fixedly arranged around the grinding and conveying pipe 401. A spring plate sliding groove 403 is opened on the side of the shell connecting plate 402. The material storage shell 404 is sleeved on the outer periphery of the grinding and conveying pipe 401 and fixedly connected to each of the shell connecting plates 402. A plurality of spring support rods 405 are fixedly arranged on the inner side of the upper part of the material storage shell 404 and are fixedly connected to the upper side of the grinding and conveying pipe 401. A feeding pipe 406 is fixedly connected to the bottom of the material storage shell 404. A pull rope fixing rod 407 is fixedly arranged inside the feeding pipe 406 and is fixedly connected to the outer side of the grinding and conveying pipe 401. A plurality of bolt holes 408 are fixedly opened on the outer periphery of the upper part of the material storage shell 404.

[0018] In this embodiment, the grinding and feeding pipe 401 is used to transport the ground coffee powder from the grinding device 10 into the storage mechanism 30, and the storage shell 404 provided on the outside of the grinding and feeding pipe 401 is used to load and store coffee ground materials, and more coffee ground materials can be loaded through the convex shape setting.

[0019] Specific reference Figure 2-4 The spring plate mechanism 50 includes a tension spring 501, a spring plate 502, and a curling rope 504. The tension spring 501 is fixedly arranged at the bottom of each spring support rod 405. Several spring plates 502 are arranged between the grinding feed pipe 401 and the material storage shell 404 and are slidably connected to the two. A spring plate sliding block 503 is fixedly connected between each spring plate 502 and is installed in the spring plate sliding groove 403 and is slidably connected to it. The upper part of the spring plate 502 is fixedly connected to the lower end of the tension spring 501. The curling rope 504 is fixedly connected to the lower part of each spring plate 502 and passes through the rope fixing rod 407 and is slidably connected to it. The lower end of the curling rope 504 is fixedly connected to a limiting column 505.

[0020] In this embodiment, each of the spring plates 502 provided in the material storage shell 404 is connected by the spring plate sliding block 503 and is installed in the spring plate sliding groove 403 so that each of the spring plates 502 can slide in the material storage shell 404, and further, each of the spring plates 502 is pulled by the tension spring 501 to move it to the upper part of the device, thereby giving thrust to the coffee ground material, and the curling pull rope 504 provided at the bottom of the spring plate is used to pull the spring plate 502 downward to the position of the feeding tube 406, so that a gap appears around the inside of the material storage shell 404, so that the coffee ground material can be injected therein, and the curling pull rope 504 can automatically bend and fold when not under tension to reduce the occupied space, and further the curling pull rope 504 is fixed and penetrated through the pull rope fixing rod 407 to prevent it from being pulled into the device by the spring plate 502, and further the limiting column 505 is provided at the end of the curling pull rope 504 to limit it.

[0021] Specific reference Figure 2 , 5-7, 9, the grinding device 10 includes: a grinding shell 101, a grinding connecting pipe 105, a fine grinding column 107, a servo motor support plate 1010, and a rotating grinding barrel 1012. The grinding shell 101 is sleeved on the outer periphery of the material storage shell 404. A plurality of bolts 102 are fixed around the outer periphery of the grinding shell 101, and penetrate through the grinding shell 101 and are threadedly connected with the bolt holes 408 so that the grinding shell 101 is fixed to the upper part of the material storage shell 404. The grinding shell 101 A preliminary grinding barrel 103 is fixedly arranged inside, and a preliminary grinding groove 104 is densely arranged around the interior of the preliminary grinding barrel 103. The grinding connecting pipe 105 is arranged inside the grinding shell 101 and inserted into the upper end of the grinding feed pipe 401. A plurality of grinding connecting pipe support plates 106 are fixedly arranged around the grinding connecting pipe 105 and are fixedly connected to the grinding shell 101. The fine grinding column 107 is conical and fixedly arranged on the upper side of the grinding connecting pipe 105. The outer periphery of the fine grinding column 107 is densely arranged. There is a fine grinding groove 108, a plurality of fine grinding column support rods 109 are fixedly arranged around the fine grinding column 107 and are fixedly connected to the inner side of the grinding connecting pipe 105, the servo motor support plate 1010 is fixedly arranged on the upper part of the grinding shell 101, a servo motor 1011 is fixedly arranged at the center of the upper part of the servo motor support plate 1010, the output end of the servo motor 1011 passes through the servo motor support plate 1010 and is rotatably connected thereto, and a servo motor protective shell 1010 is fixedly arranged on the upper part of the support plate 1010 016 is used to protect the servo motor 1011. The rotating grinding barrel 1012 is arranged inside the grinding shell 101. The rotating grinding barrel 1012 is an inner cone and the upper inner side is an inclined surface. A plurality of motor connecting rods 1013 are fixedly arranged on the inner side of the upper part of the rotating grinding barrel 1012 and are fixedly connected to the output end of the servo motor 1011. The outer periphery of the rotating grinding barrel 1012 is densely provided with preliminary grinding grooves 1014, and the inner periphery of the rotating grinding barrel 1012 is fixed with fine grinding grooves 1015.

[0022] In this embodiment, the grinding device 10 is fixedly arranged on the upper part of the conveying pipe mechanism 40 so that the powdered ground materials can enter the grinding device 10 from the bottom thereof, and the servo motor 1011 is controlled to rotate, thereby driving the motor connecting rod 1013 and the rotating grinding barrel 1012 to rotate, so that the preliminary grinding groove 2 1014 provided on the outer periphery of the rotating grinding barrel 1012 cooperates with the preliminary grinding groove 1 104 provided inside the material storage shell 404 to perform preliminary grinding on the coffee ground materials, and further the spiral mechanism provided on the outer periphery of the preliminary grinding groove 2 1014 cooperates with the spring plate 502 to perform preliminary grinding on the coffee ground materials. The coffee ground materials after preliminary grinding are pushed into the rotating grinding barrel 1012, and further finely ground through the fine grinding groove 108 provided on the outer periphery of the fine grinding column 107 and the fine grinding groove 2 1015 provided in the rotating grinding barrel 1012. The coffee ground materials are finally ground into a powder state through the cooperation of the conical structure of the fine grinding column 107 and the conical structure inside the rotating grinding barrel 1012. Then, the coffee powder is passed into the grinding feed pipe 401 through the grinding connecting pipe 105 and input into the storage barrel 301.

[0023] Specific reference Figure 2 , 8 The material storage mechanism 30 includes a material storage barrel 301, which is sleeved on the outer periphery of the feed pipe 406 and slidably connected thereto, a grinding feed pipe support plate 302 is fixedly provided inside the material storage barrel 301, a grinding feed pipe 303 is fixedly provided on the upper part of the grinding feed pipe support plate 302 and is connected to the material storage barrel 301, and the grinding feed pipe 303 is inserted into the grinding delivery pipe 401 and is connected thereto.

[0024] In this embodiment, the material storage barrel 301 is sleeved on the outer periphery of the feed pipe 406 so that the material storage mechanism 30 can be separated from the delivery pipe mechanism 40 to facilitate the removal of ground coffee powder. The grinding feed pipe support plate 302 is further provided to separate the material storage barrel 301 from the feed pipe 406, so that the curled pull rope 504 can be placed into the upper part of the material storage barrel 301 for storage without affecting the coffee powder inside the material storage barrel 301.

[0025] The present solution also includes a controller, the position of which is set by the staff according to actual conditions during operation. The controller is used to control the electrical devices used in the present solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, display screens, computer input devices, switch buttons, communication equipment, lights, speakers and microphones; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a single-chip microcomputer, and the supporting motherboard, memory stick, storage medium and power supply are also included therewith, and the power supply is AC or a lithium battery; when a display screen is provided, a display card is also provided; for the operating principle of the controller, please refer to "Principles of Automatic Control", "Principles of Microcontrollers and Application Simulation Cases" and "Principles and Applications of Sensors" published by Tsinghua University Press, and other books in the field can be used for reference; other automatic controls and electrical devices not mentioned are all knowledge well known to those skilled in the art and will not be repeated here.

[0026] In the explanation of the present invention, it should be noted that the terminology indicating the orientation is only for the convenience of description and understanding, and is not the only limitation on the installation position of the specific technical features, and does not exclude other possible installation methods.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coffee grinder, comprising a grinding device (10), a feeding mechanism (20), and a storage mechanism (30), characterized in that: The bottom of the grinding device (10) is fixedly connected to and communicated with the upper part of the feeding mechanism (20), and the upper part of the material storage mechanism (30) is sleeved on the bottom of the feeding mechanism (20) and communicated with it, wherein the feeding mechanism (20) comprises: a conveying pipe mechanism (40), the conveying pipe mechanism being installed between the grinding device (10) and the material storage mechanism (30) so as to connect the two; A spring plate mechanism (50) is installed inside the material conveying mechanism (20) and is slidably connected to the conveying pipe mechanism (40).

2. A coffee grinder according to claim 1, characterized in that: The delivery pipe mechanism (40) comprises: A grinding material conveying pipe (401), wherein a plurality of shell connecting plates (402) are fixedly provided around the grinding material conveying pipe (401), and a spring plate sliding groove (403) is provided on the side of the shell connecting plate (402); A material storage shell (404) is sleeved on the outer circumference of the grinding material delivery pipe (401) and fixedly connected to each of the shell connecting plates (402); a plurality of spring support rods (405) are fixedly provided on the inner side of the upper portion of the material storage shell (404) and are fixedly connected to the upper side of the grinding material delivery pipe (401); a feed pipe (406) is fixedly provided at the bottom of the material storage shell (404); a pull rope fixing rod (407) is fixedly provided inside the feed pipe (406) and is fixedly connected to the outer side of the grinding material delivery pipe (401); and a plurality of bolt holes (408) are fixedly opened on the outer circumference of the upper portion of the material storage shell (404).

3. A coffee grinder according to claim 2, characterized in that: The spring plate mechanism (50) comprises: A tension spring (501), wherein the tension spring (501) is fixedly arranged at the bottom of each of the spring support rods (405); A spring plate (502), wherein a plurality of the spring plates (502) are arranged between the grinding material conveying pipe (401) and the material storage housing (404) and are slidably connected to the two, and each of the spring plates (502) is fixedly connected to each other and is provided with a spring plate sliding block (503) installed in the spring plate sliding groove (403) and is slidably connected thereto, and the upper portion of the spring plate (502) is fixedly connected to the lower end portion of the tension spring (501); A curling pull rope (504) is fixedly connected to the lower part of each spring plate (502) and passes through the pull rope fixing rod (407) to be slidably connected thereto, and a limiting column (505) is fixedly connected to the lower end of the curling pull rope (504).

4. A coffee grinder according to claim 3, characterized in that: The grinding device (10) comprises: A grinding shell (101), the grinding shell (101) being sleeved on the outer periphery of the material storage shell (404), a plurality of bolts (102) being fixedly provided around the outer periphery of the grinding shell (101) and penetrating through the grinding shell (101) and being threadedly connected to the bolt holes (408), a preliminary grinding barrel (103) being fixedly provided inside the grinding shell, and a preliminary grinding groove (104) being densely provided around the inside of the preliminary grinding barrel (103); A grinding connection pipe (105), the grinding connection pipe (105) being arranged inside the grinding shell (101) and inserted into the upper end of the grinding feed pipe (401), and a plurality of grinding connection pipe support plates (106) being fixedly arranged around the grinding connection pipe (105) and fixedly connected to the grinding shell (101); A fine grinding column (107), the fine grinding column (107) being conical and fixedly arranged on the upper side of the inner part of the grinding connection tube (105), the outer circumference of the fine grinding column (107) being densely provided with a fine grinding groove (108), and a plurality of fine grinding column support rods (109) being fixedly arranged around the fine grinding column (107) and fixedly connected to the inner side of the grinding connection tube (105); A servo motor support plate (1010), the servo motor support plate (1010) being fixedly arranged on the upper part of the grinding shell (101), a servo motor (1011) being fixedly arranged at the center of the upper part of the servo motor support plate (1010), an output end of the servo motor (1011) passing through the servo motor support plate (1010) and being rotatably connected thereto, and a servo motor protection shell (1016) being fixedly arranged on the upper part of the support plate (1010); A rotating grinding barrel (1012), the rotating grinding barrel (1012) being arranged inside the grinding shell (101), the rotating grinding barrel (1012) being in the shape of an inner cone and the inner upper side being in the shape of an inclined surface, a plurality of motor connecting rods (1013) being fixedly arranged on the inner side of the upper part of the rotating grinding barrel (1012) and being fixedly connected to the output end of the servo motor (1011), the outer periphery of the rotating grinding barrel (1012) being densely provided with two preliminary grinding grooves (1014), and the inner periphery of the rotating grinding barrel (1012) being fixedly provided with two fine grinding grooves (1015).

5. A coffee grinder according to claim 4, characterized in that: The material storage mechanism (30) comprises: A material storage barrel (301) is sleeved on the outer circumference of the feed pipe (406) and is slidably connected thereto; a grinding feed pipe support plate (302) is fixedly provided inside the material storage barrel (301); a grinding feed pipe (303) is fixedly provided on the upper part of the grinding feed pipe support plate (302) and is connected to the material storage barrel (301); and the grinding feed pipe (303) is inserted into the grinding delivery pipe (401) and is connected thereto.

6. A coffee grinder grinding method, characterized in that: Using the coffee grinder according to any one of claims 1 to 5 comprises the following steps: S1: moving the spring plate (502) included in the spring plate mechanism (50) out of the conveying tube mechanism (40) and flipping the device to further add coffee ground material into the material storage shell (404); S2: applying a certain thrust to the ground coffee material through the spring plate (502) so that the ground coffee material moves upward to the grinding device (10) for grinding; S3: controlling the servo motor (1011) to drive the rotating grinding barrel (1012) so that the coffee ground material entering the grinding device (10) is initially ground with the primary grinding groove 1 (104) and the primary grinding groove 2 (1014), and then the spring plate (502) pushes the material to move further into the rotating grinding barrel (1012) and is rotated in coordination with the fine grinding groove 1 (108) and the fine grinding groove 2 (1015) to be finely ground into coffee powder; S4: After the grinding is completed, the coffee powder is passed from the feeding mechanism (20) to the storage mechanism (30) for storage; S5: The coffee powder is removed from the storage mechanism (30) and mixed with water or other drinkable liquid to form a coffee beverage for drinking.

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