Grinding mechanism, grinding machine and grinding method

Abstract

The present invention discloses a grinding mechanism that can be used to grind coffee beans, etc., which includes an upper grinding disc assembly and a lower grinding disc assembly, which are independently arranged; the upper grinding disc assembly is provided with a connection portion that can be detachably connected to the outside, and the lower grinding disc assembly is driven by the outside to rotate and can be detached independently; the upper grinding disc assembly and the lower grinding disc assembly cooperate with each other to form a grinding gap; the upper grinding disc assembly can move along its axial direction to adjust the size of the grinding gap; when the lower grinding disc assembly is installed in place and the upper grinding disc assembly moves upward along its axial direction to an extreme tight fit with the outside, the grinding gap is at a maximum value. Correspondingly, the present invention also discloses a grinder using the above-mentioned grinding mechanism, and a grinding method using the grinder. The present invention can not only stably adjust the coarseness of coffee powder, but also achieve thorough and all-round cleaning, and the structure is relatively simple. In addition, the corresponding grinding method is easy and simple to operate, and the user experience is good.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding, and in particular relates to a grinding mechanism, a grinding machine and a grinding method. Background Art

[0002] With the gradual development of the national economy, people's demands for quality of life are getting higher and higher. Coffee has become an everyday drink that has entered many ordinary households. The key to the quality of coffee lies in the quality of the coffee beans, but in fact, the taste of coffee also depends on the freshness of the coffee powder. Because even the best quality coffee beans will show a certain decline in quality after being ground into coffee powder and left for a certain period of time. Based on this, more and more loyal coffee lovers prefer to bring their own coffee bean grinders to grind the coffee beans themselves to obtain fresher coffee powder. However, traditional grinders have the following problems:

[0003] (1) For traditional grinders, since the lower grinding disc assembly in dynamic rotation is fixedly connected to the motor, it is in a completely fixed state and cannot be disassembled. That is, the user can only remove the upper grinding disc assembly which is static. Therefore, the cleaning of traditional grinders is quite troublesome, or even impossible to clean thoroughly. In the long run, it not only affects the taste of the coffee liquid, but also brings greater health risks.

[0004] (2) Traditional grinders can usually only grind coffee powder of one coarseness and fineness specification, which is completely unable to meet the different coarseness and fineness requirements of users with different tastes. In addition, since its grinding mechanism has many assembly parts, the assembly error will also affect the coarseness and fineness, which is not conducive to ensuring product quality.

[0005] (3) The structure of traditional grinding machines is relatively complex and the manufacturing process is cumbersome, which is not conducive to reducing manufacturing costs. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, the present invention provides a coffee bean grinding mechanism with a novel structure, which is not only conducive to stably adjusting the coarseness of coffee powder, but also can achieve thorough and all-round cleaning. In addition, its structure is relatively simple, which is conducive to reducing manufacturing costs.

[0007] In order to achieve its purpose, the present invention adopts the following technical solutions:

[0008] A grinding mechanism, characterized in that:

[0009] It includes an upper grinding disc assembly and a lower grinding disc assembly, which are independently arranged;

[0010] The upper grinding disc assembly is provided with a connection portion that can be detachably connected to the outside, and the lower grinding disc assembly is driven by the outside to rotate and can be detached independently;

[0011] The upper grinding disc assembly cooperates with the lower grinding disc assembly to form a grinding gap; the upper grinding disc assembly can move along its axial direction to adjust the size of the grinding gap;

[0012] When the lower grinding disc assembly is installed in place and the upper grinding disc assembly moves upward along its axial direction to a state of extreme tight fit with the outside, the grinding gap is at its maximum value.

[0013] Furthermore, the connecting portion of the upper grinding disc assembly is a first thread.

[0014] Furthermore, the first thread is an external thread.

[0015] Correspondingly, the present invention also provides a grinder having the advantages of being able to stably adjust the coarseness of coffee powder, being able to be thoroughly cleaned, and having a simple structure. The grinder includes a main unit, characterized in that:

[0016] It also includes a driving mechanism and the aforementioned grinding mechanism;

[0017] The upper grinding disc assembly is detachably connected to the main machine via the connecting portion thereon, and the upper grinding disc assembly can be moved upward along its axial direction to a state of extreme tight fit with the main machine;

[0018] When the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirement, the upper grinding disc assembly is limited and fixed to prevent rotation;

[0019] The lower grinding disc assembly can be detachably connected to the driving mechanism and rotate along with the driving mechanism;

[0020] When the lower grinding disc assembly is connected in place and the upper grinding disc assembly and the main machine are in an extremely tight fit state, the grinding gap is at a maximum value.

[0021] Furthermore, the driving mechanism is located above the upper grinding disc assembly; the output shaft of the driving mechanism axially penetrates the upper grinding disc assembly and is connected to the lower grinding disc assembly.

[0022] Furthermore, the end surface of the upper grinding disc assembly is provided with a feed port, and the output shaft of the driving mechanism axially passes through the feed port and is connected to the lower grinding disc assembly.

[0023] Furthermore, the upper grinding disc assembly is detachably connected to the main unit via the connecting portion, and its structural form includes:

[0024] The connecting portion is a first thread, and the main unit is provided with a second thread; the first thread and the second thread are threadedly connected so that the upper grinding disc assembly can move along its axial direction.

[0025] Furthermore, the first thread is set as an external thread located on the outer wall of the upper grinding disc assembly, and the second thread is set as an internal thread located on the inner side of the main machine.

[0026] Furthermore, when the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirement, the upper grinding disc assembly is limited and fixed to avoid rotation, and one structural form thereof includes:

[0027] The upper grinding disc assembly is provided with a plurality of retractable first push rods, and the main unit is provided with a plurality of first recessed portions; when the upper grinding disc assembly is connected to the main unit so that the grinding gap reaches the set requirements, each of the first push rods and each of the first recessed portions respectively cooperate to limit and fix the upper grinding disc assembly to prevent the upper grinding disc assembly from rotating.

[0028] Furthermore, each of the first push rods is provided with a spring assembly.

[0029] Furthermore, when the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirement, the upper grinding disc assembly is limited and fixed to avoid rotation. Another structural form thereof includes:

[0030] The main machine is provided with a plurality of retractable second push rods, and the upper grinding disc assembly is provided with a plurality of second recessed portions; when the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirements, each of the second push rods and each of the second recessed portions respectively cooperate to limit and fix the upper grinding disc assembly to prevent the upper grinding disc assembly from rotating.

[0031] Furthermore, each of the second push rods is provided with a spring assembly.

[0032] Furthermore, the lower grinding disc assembly can rotate synchronously with the driving mechanism.

[0033] Furthermore, a flattening portion is provided on the output shaft of the driving mechanism, and a first through hole is provided on the end surface of the lower grinding disc assembly; the flattening portion cooperates with the first through hole to enable the lower grinding disc assembly to rotate synchronously with the driving mechanism.

[0034] Furthermore, the grinding machine also includes a lower grinding disc fixing nut;

[0035] A third thread is provided on the output shaft of the driving mechanism, which is located between the flat portion and the head of the output shaft of the driving mechanism; when the flat portion is engaged with the flat portion of the first through hole, the lower grinding disc fixing nut is threadedly engaged with the third thread to fix the lower grinding disc assembly to the driving mechanism.

[0036] Furthermore, the lower grinding disc assembly is provided with a column for easy operation and installation.

[0037] Furthermore, a guide block is provided in the feed port to guide the raw material to be ground into the grinding gap.

[0038] Furthermore, the outer wall of the upper grinding disc assembly is evenly distributed with limit scale lines, and the main unit is provided with marking lines corresponding to the limit scale lines.

[0039] Furthermore, the host is provided with a power interface connected to an external power source, a control circuit board, and a start button; the power interface and the start button are both electrically connected to the control circuit board.

[0040] Furthermore, the driving mechanism is a grinding motor, and a first shock-absorbing part is provided between the grinding motor and the host; the host is also provided with a grinding amount adjustment knob, and the grinding amount adjustment knob and the grinding motor are electrically connected to the control circuit board.

[0041] Furthermore, the main machine is provided with a storage bin for containing raw materials to be ground; the grinding gap is communicated with the storage bin.

[0042] Furthermore, a baffle is provided on the main machine; the baffle can be rotated at a certain angle along the circumferential direction of the main machine to open or close the passage between the storage bin and the grinding gap;

[0043] A sealing strip is provided at the connection between the passage between the storage bin and the grinding gap and the main machine.

[0044] Furthermore, the storage bin is arranged outside the grinding motor.

[0045] Furthermore, the storage bin is provided with a first cover, with a second shock-absorbing portion provided therebetween; and a silicone area is provided on the end surface of the first cover.

[0046] Furthermore, the grinding machine also includes a safety shield, and the safety shield is provided with a discharge port;

[0047] When the safety shield is buckled onto the main machine, the safety shield integrally encloses the upper grinding disc assembly and the lower grinding disc assembly, and the grinding gap is communicated with the discharge port.

[0048] Furthermore, a safety step surface is provided on the inner side of the safety shield to prevent the upper grinding disc assembly and the lower grinding disc assembly from fitting together.

[0049] Furthermore, the host is provided with a safety switch, which is electrically connected to the control circuit board; the port of the safety shield is provided with a first protrusion;

[0050] When the safety shield is correctly fastened to the main machine, the first protrusion triggers the safety switch to start the grinding machine.

[0051] Furthermore, the safety shield is buckled onto the host, and its structure includes:

[0052] The outer wall of the main unit is provided with a second protrusion, and the inner wall of the safety shield is provided with a third recessed portion, and the flow direction of the third recessed portion is toward the port of the safety shield;

[0053] The second protrusion can be snap-fitted with the third recessed portion so that the safety shield is snapped onto the host.

[0054] Furthermore, the grinding machine also includes a cup body, which is connected to the discharge port.

[0055] Furthermore, the discharge port is located at the bottom of the safety shield, and the cup body is located directly below the safety shield.

[0056] Furthermore, the cup body is provided with a retractable second cover; the second cover is provided with a second through hole communicating with the interior of the cup body, and a sealing ring is provided at the second through hole;

[0057] When the discharge port is communicated with the second through hole, the second cover body presses against the discharge port, so that the interior of the cup body and the interior of the safety shield are both sealed.

[0058] Furthermore, a spring assembly is provided on the second cover body; a fourth recess is provided on the inner side of the second cover body, and a third protrusion is provided on the outer wall of the cup body. The third protrusion is snap-fitted with the fourth recess, so that the second cover body is arranged on the cup body.

[0059] Furthermore, the second cover body is provided with a plug for blocking the second through hole.

[0060] Furthermore, the host is provided with a bracket, and the bracket is provided with a wiring groove for limiting the swing of the connection line between the power interface and the external power supply.

[0061] Furthermore, the bracket is provided with a base for placing the cup body, and the bottom of the base is provided with a foot suction cup.

[0062] Correspondingly, the present invention also provides a grinding method, which is relatively simple and convenient to operate and provides a strong user experience, and is characterized in that it comprises the following steps:

[0063] Prepare the raw materials to be ground;

[0064] Install the aforementioned grinding machine: connect the upper grinding disc assembly to the main machine, and connect the lower grinding disc assembly to the drive mechanism;

[0065] Moving the upper grinding disc assembly along its axial direction to adjust the grinding gap and ensure the grinding coarseness;

[0066] Starting the driving mechanism to drive the lower grinding disc assembly to rotate;

[0067] The raw material to be ground is placed in the grinding gap to complete the grinding.

[0068] Furthermore, after adjusting the grinding gap, a safety shield is fastened to the main machine to integrally enclose the upper grinding disc assembly and the lower grinding disc assembly, and the discharge port of the safety shield is connected to the grinding gap.

[0069] Furthermore, after the safety shield is buckled onto the main unit, a cup body is sealed and connected to the discharge port of the safety shield.

[0070] Compared with the prior art, the present invention has the following beneficial effects:

[0071] (1) The present invention provides a grinding mechanism for grinding coffee beans, comprising an upper grinding disc assembly and a lower grinding disc assembly which are independently arranged and can be removed separately. Experiments have shown that the removed upper grinding disc assembly and the lower grinding disc assembly can even be placed in a dishwasher for cleaning, thereby achieving thorough and comprehensive cleaning, which is conducive to not only ensuring the taste of the coffee liquid but also ensuring the hygiene of the coffee liquid; in the grinding mechanism described in the present invention, the upper grinding disc assembly can be moved along its axial direction to adjust the size of the grinding gap, and the structure is completely different from that of the traditional grinding mechanism in that, in the grinding mechanism described in the present invention, when the lower grinding disc assembly is installed in place and the upper grinding disc assembly moves upward along its axial direction to an extreme tight fit state with the outside, the grinding gap is at a maximum value, thereby not only achieving the adjustment of the coarseness of the coffee powder, but also the coarseness adjustment is extremely stable, which is conducive to ensuring product quality; in addition, the grinding mechanism described in the present invention has a relatively simple structure, which is conducive to reducing manufacturing costs.

[0072] (2) The present invention also provides a grinder, which includes a main unit, a driving mechanism and the aforementioned grinding mechanism. When the upper grinding disc assembly is connected to the main unit so that the grinding gap reaches the set requirement, the upper grinding disc assembly can be limited and fixed to avoid rotation, which is more conducive to ensuring the stability of coarseness adjustment; moreover, when the upper grinding disc assembly and the lower grinding disc assembly are removed for cleaning, other areas inside the grinder of the present invention can be more exposed, which is more conducive to ensuring all-round and thorough cleaning; in addition, the overall structure of the grinder of the present invention is simple and lightweight.

[0073] (3) The present invention also provides a method for grinding coffee beans. Based on the advantages of the simple structure of the grinder described in the present invention, the operation steps of the grinding method are extremely simple and convenient, and the user experience is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The technology of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0075] Figure 1 1 is a schematic structural diagram of an upper grinding disc assembly and a lower grinding disc assembly according to embodiment 1 of the present invention;

[0076] Figure 2 This is an exploded view of the assembly of the main unit of Example 2 of the present invention and the grinding mechanism of Example 1;

[0077] Figure 3 1 is a schematic structural diagram of an upper grinding disc assembly, a lower grinding disc assembly, and a lower grinding disc fixing nut according to embodiment 2 of the present invention;

[0078] Figure 4 is an overall cross-sectional view of a grinding machine according to embodiment 2 of the present invention;

[0079] Figure 5 This is a schematic structural diagram of a first cover body according to a second embodiment of the present invention;

[0080] Figure 6 This is a schematic structural diagram of a safety shield according to a second embodiment of the present invention;

[0081] Figure 7 This is a schematic diagram of the assembly structure of the cup body and the second cover body of Example 2 of the present invention;

[0082] Figure 8 is another overall cross-sectional view of the grinding machine according to Example 2 of the present invention;

[0083] Figure 9 is an overall exploded view of a grinding machine according to embodiment 2 of the present invention;

[0084] Figure 10 is an isometric view of a grinding machine according to Example 2 of the present invention;

[0085] Figure 11 Schematic diagram of the minimum gap standard template detection assembly according to embodiment 2 of the present invention;

[0086] Figure 12 1 is a schematic diagram of an electrical control principle of a grinding machine according to embodiment 2 of the present invention;

[0087] Figure 13 is an overall cross-sectional view of a grinding machine according to embodiment 3 of the present invention;

[0088] Figure 14 This is a partial cross-sectional view of a grinding machine according to Example 3 of the present invention.

[0089] Reference numerals:

[0090] 1- Grinding mechanism;

[0091] 11-upper grinding disc assembly; 111-external thread; 112-feeding port; 1121-guide block; 113-first ejector rod; 114-second recess; 115-limiting scale line; 116-cylinder; 1101-upper grinding disc; 1102-upper disc bracket;

[0092] 12-lower grinding disc assembly; 121-first through hole; 122-column; 1201-lower grinding disc; 1202-lower disc bracket;

[0093] 2-Grinding machine;

[0094] 21 - main unit; 211 - internal thread; 212 - first recess; 213 - second ejector pin; 214 - marking line; 215 - control circuit board; 216 - start button; 217 - grinding amount adjustment knob; 218 - safety switch; 219 - second protrusion;

[0095] 22-driving mechanism; 221-flat portion; 222-third thread; 223-first shock absorbing portion;

[0096] 23-Lower grinding disc fixing nut;

[0097] 24-storage compartment; 241-first cover; 2411-silicon area; 2412-self-sealing area; 242-second shock-absorbing portion; 243-decorative cover; 244-pressing ring;

[0098] 25-blocking piece;

[0099] 26-safety shield; 261-discharging port; 262-safety step surface; 263-first protrusion; 264-third recess;

[0100] 27 - cup body; 271 - second cover; 2711 - second through hole; 2712 - fourth recess; 272 - third protrusion; 273 - plug; 274 - flexible connector; 27101 - upper cover; 27102 - middle cover; 27103 - lower cover;

[0101] 28-bracket; 281-cable trough;

[0102] 29-base; 291-foot suction cup;

[0103] 3-Minimum clearance standard template. DETAILED DESCRIPTION

[0104] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0105] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, terms such as "upper," "lower," "left," and "right" used in this disclosure are intended solely to describe the relative positions of the components of the disclosure as shown in the accompanying drawings.

[0106] Example 1:

[0107] A grinding mechanism 1, such as Figure 1 As shown, it includes an upper grinding disc assembly 11 and a lower grinding disc assembly 12, which are independently arranged.

[0108] The upper grinding disc assembly 11 is provided with a connection portion that can be detachably connected to the outside, and the outside can be a specific bracket 28 or a shell, or other components that can fix the upper grinding disc assembly 11.

[0109] The lower grinding disc assembly 12 is driven externally to rotate and can be independently disassembled. The external drive can be manual or electric, for example, it can be turned by hand or driven by a motor connection.

[0110] As can be seen from the above structure, the upper grinding disc assembly 11 and the lower grinding disc assembly 12 can be disassembled separately for thorough cleaning, which can prevent coffee powder from accumulating on the upper grinding disc assembly 11 and / or the lower grinding disc assembly 12 for a long time and becoming moldy, thereby affecting the taste of the subsequent coffee liquid and the user's health.

[0111] The upper grinding disc assembly 11 and the lower grinding disc assembly 12 cooperate to form a grinding gap; the upper grinding disc assembly 11 can be moved along its axial direction to adjust the size of the grinding gap. By adjusting the axial movement of the upper grinding disc assembly 11, the size of the grinding gap can be adjusted to grind coffee powder of different coarsenesses to meet the different coarseness requirements of different users.

[0112] The grinding gap reaches its maximum value when the lower grinding disc assembly 12 is in place and the upper grinding disc assembly 11 is moved upward along its axial direction to a tight fit with the outside. In other words, the gap is maximum when the upper grinding disc assembly 11 is at its highest position. As the upper grinding disc assembly 11 moves downward, the grinding gap decreases, becoming increasingly smaller the further down the grinding disc assembly 11 is moved. This structural design completely overturns the design concept of traditional grinding mechanisms and is extremely novel and unique. Compared to traditional grinding mechanisms, it provides more stable adjustment of coffee powder coarseness, which helps ensure product quality. Furthermore, the grinding mechanism's simple structure helps reduce manufacturing costs.

[0113] In this embodiment, the connecting portion of the upper grinding disc assembly 11 is a first thread, which can be fixedly connected to the outside through the first thread. At the same time, the upper grinding disc assembly 11 can be translated along its axial direction through the adjustment of the first thread, thereby achieving the effect of adjusting the size of the grinding gap, and the structure is extremely simple.

[0114] In this embodiment, the first thread is configured as an external thread 111, and the corresponding external portion connected thereto has an internal thread 211 that cooperates with the external thread 111. Of course, the first thread is not limited to being an external thread, but rather can also be configured as an internal thread, in which case the external portion connected thereto is configured with an external thread that cooperates with the internal thread.

[0115] Among them, Figure 1 The upper grinding disc assembly 11 includes an upper grinding disc 1101 and an upper cutting disc support 1102. A circular feed port 112 is provided between the upper cutting disc support 1102 and the upper grinding disc 1101. The upper grinding disc 1101 is fixed to the upper cutting disc support 1102 via screws and is coaxial with the upper cutting disc support 1102. The outer periphery of the upper cutting disc support 1102 is formed with external threads 111 that mate with the internal threads 211 of the main unit 21. Of course, the upper grinding disc assembly 11 can also be formed in one piece.

[0116] Among them, Figure 1 The lower grinding disc assembly 12 includes a lower grinding disc 1201 and a lower cutting disc bracket 1202. The lower grinding disc 1201 is fixed to the lower cutting disc bracket 1202 by screws, and the flat portion 221 is provided on the lower cutting disc bracket 1202. Of course, the lower grinding disc assembly 12 can also be integrally formed.

[0117] Example 2:

[0118] This embodiment discloses a grinder 2, which has the advantages of being able to stably adjust the coarseness of coffee powder, being able to be thoroughly cleaned, and having a simple structure. Figures 1 to 12 As shown, it includes a main body 21, a driving mechanism 22, and the grinding mechanism 1 of Example 1.

[0119] like Figure 2The upper grinding disc assembly 11 is detachably connected to the main machine 21 via a connection portion thereon, and the upper grinding disc assembly 11 can be moved upward along its axial direction until it is in a state of extreme tight fit with the main machine 21. The lower grinding disc assembly 12 is detachably connected to the drive mechanism 22 and rotates with the drive mechanism 22. When the lower grinding disc assembly 12 is connected in place and the upper grinding disc assembly 11 is in a state of extreme tight fit with the main machine 21, the grinding gap is at its maximum value.

[0120] If you want to make the ground coffee powder finer, you only need to adjust the upper grinding disc assembly 11 from top to bottom; if you want to make the ground coffee powder coarser, you need to adjust the upper grinding disc assembly 11 from bottom to top. The coarseness of the coffee powder can be adjusted by adjusting the upper grinding disc assembly 11 up and down.

[0121] Furthermore, since the upper grinding disc assembly 11 is detachably connected to the main unit 21 and the lower grinding disc assembly 12 is detachably connected to the drive mechanism 22, the upper grinding disc assembly 11 and the lower grinding disc assembly 12 can be detached separately for cleaning when cleaning is required. At the same time, other areas inside the grinder 2 are also more exposed, thereby achieving all-round and thorough cleaning of the grinder, thereby preventing coffee powder from accumulating on the upper grinding disc assembly 11 and / or the lower grinding disc assembly 12 for a long time and causing mildew inside the grinder 2, thereby affecting the taste of the subsequent coffee liquid and the health of the user.

[0122] It should be noted that the driving mechanism 22 can be a manual rocker, which can be manually driven by the user to rotate the grinding disc assembly 12 for grinding; the driving mechanism 22 can also be a motor, which drives the lower grinding disc assembly 12 for grinding. Compared with the method of grinding by a manual rocker, the method of using a motor to drive is more convenient. Therefore, in this embodiment, the driving mechanism 22 is a grinding motor. The connection between the grinding motor and the lower grinding disc assembly 12 can be either a direct connection or connected through other transmission mechanisms, as long as it can drive the lower grinding disc assembly 12 for grinding.

[0123] Furthermore, to ensure stable adjustment of the coarseness of the coffee powder and ensure grinding efficiency, the upper grinding disc assembly 11 is connected to the main unit 21 so that when the grinding gap reaches the set requirement, the upper grinding disc assembly 11 is fixed in a position to prevent rotation. If the upper grinding disc assembly 11 is not fixed when the grinding gap is adjusted to the required level, the upper grinding disc assembly 11 may rotate in the same direction as the lower grinding disc assembly 12. Although there will be a certain speed difference between the two, the grinding action can still be achieved. However, the coarseness of the ground coffee powder will be unstable, affecting the taste of the coffee liquid, and the grinding efficiency is low, thereby prolonging the grinding time. The present invention, by fixing the upper grinding disc assembly 11 in a position, can prevent the upper grinding disc assembly 11 from rotating during grinding, thereby effectively ensuring stable adjustment of the coarseness of the coffee powder and ensuring grinding efficiency. The specific structure for implementing this position fixing to prevent the upper grinding disc assembly 11 from rotating will be explained in detail below.

[0124] In this embodiment, if Figures 2 to 4As shown, the drive mechanism 22 is located above the upper grinding disc assembly 11; the output shaft of the drive mechanism 22 axially penetrates the upper grinding disc assembly 11 and is connected to the lower grinding disc assembly 12, that is, the output shaft of the drive mechanism 22 passes through the upper grinding disc assembly 11 from top to bottom, and the lower grinding disc assembly 12 is detachably arranged on the output shaft. During disassembly, the lower grinding disc assembly 12 can be removed from the output shaft first, and then the upper grinding disc assembly 11 can be disassembled and separated from the main machine 21. In traditional grinders, the drive mechanism is located below the grinding disc assembly (including the upper and lower grinding disc assemblies). Based on the limitation of this structure, on the one hand, assuming that the traditional grinder can adjust the grinding coarseness, the finest grinding gap must be set first (the industry usually requires the grinding gap to be 0.34mm). However, due to manufacturing errors and installation errors, in mass production, the finest grinding gap of each grinder actually has errors. Therefore, in order to achieve consistency, the finest grinding gap must be adjusted for each grinder during the manufacturing process, which makes the manufacturing process cumbersome and increases the manufacturing cost. In addition, , the requirements for the detachable connection structure between the lower grinding disc assembly 12 and the output shaft of the drive mechanism 22 are very high, that is, the thickness of the connection structure must be less than the finest grinding gap (for example, if a nut is used for fixing, the thickness of the nut must be less than 0.34mm, which in turn places extremely high requirements on the strength of the nut). On the other hand, traditional grinders must have a dedicated channel to allow the ground coffee powder to avoid the position of the lower drive mechanism 22 before entering the container. This not only makes the entire grinder structure relatively large, but also hinders the overall cleaning of the equipment. The grinder described in this embodiment has a breakthrough in placing the drive mechanism 22 upward, effectively solving these aforementioned problems of traditional grinders. That is, it not only effectively ensures the stable adjustment of the coarseness of the coffee powder, but also makes the overall structure of the equipment simpler and lighter, expands the range of choices for equipment manufacturing materials, and also facilitates thorough cleaning of the equipment.

[0125] Among them, Figure 2 As shown, the end surface of the upper grinding disc assembly 11 is provided with an inlet 112. The output shaft of the drive mechanism 22 axially extends through the inlet 112 and then connects to the lower grinding disc assembly 12. This inlet 112 serves as the entrance for the coffee beans. During the grinding process, the coffee beans fall through this inlet 112 into the grinding gap between the upper and lower grinding disc assemblies 11, where they are ground. The output shaft passes through this inlet 112 and connects to the lower grinding disc assembly 12, ensuring that the lower grinding disc assembly 12 rotates without interfering with the upper grinding disc assembly 11, the drive mechanism 22, and other components, thus ensuring normal grinding.

[0126] In this embodiment, similar to the embodiment 1, the upper grinding disc assembly 11 is detachably connected to the main machine 21 via the connecting portion, and its structural form includes:

[0127] The connecting portion is a first thread, and the main unit 21 is provided with a second thread; the first thread and the second thread are threadedly connected so that the upper grinding disc assembly 11 can move along its axial direction, that is, the two are threadedly connected to achieve adjustment of the grinding gap.

[0128] In this embodiment, if Figure 1 and Figure 2 The first thread is set as an external thread 111 located on the outer wall of the upper grinding disc assembly 11, and the second thread is set as an internal thread 211 located on the inner side of the main machine 21. Of course, the reverse can also be achieved through structural adjustment, that is, the first thread is set as an internal thread located on the inner wall of the upper grinding disc assembly 11, and the second thread is set as an external thread located on the outer side of the main machine 21, which can also achieve adjustment of the grinding gap.

[0129] In this embodiment, the upper grinding disc assembly 11 is connected to the main machine 21 so that when the grinding gap reaches the set requirement, the upper grinding disc assembly 11 is limited and fixed to prevent rotation. Its structural form includes:

[0130] like Figure 4 , the host 21 is provided with a plurality of retractable second push rods 213; Figure 1 and Figure 4 , a plurality of second recessed portions 114 are provided on the upper grinding disc assembly 11; when the upper grinding disc assembly 11 is connected to the main machine 21 so that the grinding gap reaches the set requirement, each second push rod 213 cooperates with each second recessed portion 114 to limit and fix the upper grinding disc assembly 11 to prevent the upper grinding disc assembly 11 from rotating.

[0131] Based on this structural design, after the upper grinding disc assembly 11 is adjusted into place, the second push rod 213 extends into the second recessed portion 114, so that the upper grinding disc assembly 11 can be fixed at the upper limit position on the main unit 21, preventing the upper grinding disc assembly 11 from rotating during grinding, thereby avoiding instability in the coarseness of the coffee powder and helping to ensure grinding efficiency.

[0132] Wherein, the end of the second push rod 213 is set to a smooth end, and the second recessed portion 114 is a smooth groove that can accommodate and only accommodate the smooth end. When it is necessary to adjust the position of the upper grinding disc assembly 11, a torsional force is applied to the upper grinding disc assembly 11, and the smooth end slips off the second recessed portion 114 and the second push rod 213 is shortened at the same time, so that the second push rod 213 can be separated from the second recessed portion 114, thereby allowing the upper grinding disc assembly 11 to rotate relative to the host 21, and then the axial position of the upper grinding disc assembly 11 can be adjusted to adjust the size of the grinding gap. In the process of adjusting the upper grinding disc assembly 11, when the second push rod 213 is just turned to correspond to the second recessed portion 114, the second push rod 213 is extended again and cooperates with the second recessed portion 114. When a torsional force is applied again, the second push rod 213 can be separated from the second recessed portion 114. In this cycle, the axial adjustment of the position of the upper grinding disc assembly 11 can be achieved.

[0133] Specifically, each of the second push rods 213 is provided with a spring assembly. Figure 4 As shown, the second push rod 213 is provided with a flange that cooperates with the spring assembly. One end of the spring assembly abuts against the flange, and the other end abuts against the hole in the main body 21. When the second push rod 213 retracts, the spring assembly is compressed. When the second push rod 213 extends, the spring assembly pushes the second push rod 213 out. More specifically, the spring assembly is a compression spring.

[0134] In this embodiment, the lower grinding disc assembly 12 can rotate synchronously with the driving mechanism 22. In order to prevent the lower grinding disc assembly 12 and the output shaft of the driving mechanism 22 from rotating relative to each other during the grinding process, this embodiment has the following design: a flat portion 221 is provided on the output shaft of the driving mechanism 22, and a first through hole 121 is provided on the end face of the lower grinding disc assembly 12; the flat portion 221 is flatly matched with the first through hole 121, so that the lower grinding disc assembly 12 and the driving mechanism 22 rotate synchronously. After the flat portion 221 and the first through hole 121 are flatly matched, they cannot rotate relative to each other, but can slide relative to each other in the axial direction. Therefore, under the premise of ensuring the synchronous rotation effect, the lower grinding disc assembly 12 can also be slid toward the head of the output shaft of the driving mechanism 22 for removal.

[0135] Based on the above structure, in order to prevent the lower grinding disc assembly 12 from sliding up and down on the output shaft of the driving mechanism 22 during the grinding process, thereby affecting the grinding gap and the grinding effect, the following designs are made in this embodiment:

[0136] like Figures 2-4As shown, the grinding machine 2 further includes a lower grinding disc fixing nut 23; a third thread 222 is provided on the output shaft of the driving mechanism 22, which is located between the flat portion 221 and the head of the output shaft of the driving mechanism 22; when the flat portion 221 is flattened and engaged with the first through hole 121, the lower grinding disc fixing nut 23 and the third thread 222 are threadedly engaged to securely connect the lower grinding disc assembly 12 to the driving mechanism 22. The threaded engagement of the lower grinding disc fixing nut 23 with the third thread 222 on the output shaft of the driving mechanism 22 can axially secure the lower grinding disc assembly 12 to the output shaft of the driving mechanism 22, thereby preventing the lower grinding disc assembly 12 from axially sliding in the fixed state, thereby ensuring a grinding gap and a good grinding effect.

[0137] From then on, the circumferential movement of the lower grinding wheel assembly 12 on the output shaft of the driving mechanism 22 is restricted by the flattened portion 221 and the flattened position cooperation of the first through hole 121, and the axial movement of the lower grinding wheel assembly 12 on the output shaft of the driving mechanism 22 is restricted by the threaded cooperation of the lower grinding wheel fixing nut 23 and the third thread 222, thereby realizing the detachable fixation of the lower grinding wheel assembly 12 and the output shaft of the driving mechanism 22. When disassembly is required, it is only necessary to unscrew the lower grinding wheel fixing nut 23 to separate the lower grinding wheel assembly 12 from the output shaft of the driving mechanism 22.

[0138] In order to facilitate the rotation and disassembly of the lower grinding disc fixing nut 23, in this embodiment, Figure 1 As shown, the lower grinding disc assembly 12 is provided with a column 122 for easy operation and installation. When the power is off, the output shaft of the driving mechanism 22 can rotate, and the user can pinch or block the column 122 to loosen or tighten the lower grinding disc fixing nut 23, so as to facilitate the disassembly of the lower grinding disc fixing nut 23 and the disassembly of the lower grinding disc assembly 12.

[0139] In this embodiment, if Figure 1 As shown, a guide block 1121 is provided in the feed port 112. The function of the guide block 1121 is to guide the raw materials to be ground (such as coffee beans, etc.) entering from the feed port 112 to flow into the grinding gap for grinding in an orderly manner, so as to prevent all the raw materials to be ground from falling into the grinding gap at one time, which affects the grinding effect.

[0140] In this embodiment, in order to facilitate the user to quickly and accurately adjust the grinding gap, Figure 1 、 2 As shown, the outer wall of the upper grinding disc assembly 11 is evenly distributed with limit scale lines 115, and the main unit 21 is provided with marking lines 214 corresponding to the limit scale lines 115. The user can adjust to the required grinding gap according to the limit scale lines 115 and the marking lines 214 to grind out the desired coarseness of coffee powder.

[0141] The marking line 214 and the limit scale line 115 are marked before leaving the factory. The specific marking method is as follows:

[0142] 1. First, assemble the upper grinding disc assembly 11 and the main machine 21 and adjust the upper grinding disc assembly 11 to the highest position;

[0143] 2. Put the minimum gap standard template 3 for production on the output shaft of the drive mechanism 22, as shown in the following figure: Figure 11 As shown;

[0144] 3. Assemble and secure the lower grinding disc assembly 12 to the output shaft of the drive mechanism 22. The gap between the upper grinding disc assembly 11 and the lower grinding disc assembly 12 is now at its maximum. Mark the position.

[0145] 4. Lower the upper grinding disc assembly 11 until the minimum gap standard template 3 is completely pressed. At this time, the gap between the upper grinding disc assembly 11 and the lower grinding disc assembly 12 is the minimum gap. Mark the position;

[0146] 5. Silk-screen the limit scale lines 115 and marking lines 214 according to the marked positions.

[0147] This method allows for rapid and effective correction of grinding gap errors that occur during the manufacturing process of each grinder. Conventional grinders, however, have their drive mechanism positioned below the grinding assembly. When the upper and lower grinding disc assemblies are tightened, the gap between them is at its minimum. Correcting grinding gap errors that occur during the manufacturing process is time-consuming. In other words, in this embodiment, the upper placement of the drive mechanism 22 allows for rapid adjustment, calibration, and marking of the grinding gap between the upper and lower grinding disc assemblies, significantly reducing the workload associated with grinder production and lowering production costs.

[0148] In this embodiment, if Figure 9 As shown, the host 21 is provided with a power interface for connecting to an external power supply, a control circuit board 215, and a start button 216; the power interface and the start button 216 are electrically connected to the control circuit board 215, and the electrical control schematic diagram is shown in FIG. Figure 12 After connecting to an external power source through the power interface, the user presses the start button 216, and the control circuit board 215 starts the driving mechanism 22 to grind according to the preset program, thereby reducing the user's operation through electronic control.

[0149] like Figure 4 As shown, the driving mechanism 22 is a grinding motor, and a first shock-absorbing part 223 is provided between the driving mechanism 22 and the main body 21. The first shock-absorbing part 223 is an elastic pad, which can be a rubber block or a silicone block, and is used to reduce the vibration caused by the grinding motor when it is working and reduce the working noise; Figure 12As shown, the main body 21 is also provided with a grinding amount adjustment knob 217. The grinding amount adjustment knob 217 and the grinding motor are electrically connected to the control circuit board 215. The grinding amount adjustment knob 217 can be used to adjust the operating time of the grinding motor electrically connected to the control circuit board 215, thereby adjusting the grinding amount.

[0150] like Figures 9-11 As shown, the main unit 21 is provided with a storage bin 24 for holding the raw materials to be ground; the grinding gap and the storage bin 24 are connected to each other, specifically, the grinding gap is connected to the storage bin 24 through the feed port 112. In this way, for example, after the user puts the coffee beans to be ground into the storage bin 24, the coffee beans can enter the grinding gap through the feed port 112 for grinding, reducing the user's action of putting in the coffee beans.

[0151] like Figure 9 As shown, to control the amount of raw material being ground, a baffle 25 is provided on the main unit 21. Baffle 25 can rotate a certain angle along the circumference of the main unit 21 to open or close the passage between the storage bin 24 and the grinding gap. Specifically, baffle 25 is hinged to the main unit and located on one side of the passage. When baffle 25 is open, raw material from the storage bin 24 continuously falls into the grinding gap for grinding. As baffle 25 slowly closes, the amount of raw material from the storage bin 24 entering the grinding gap gradually decreases. In other words, by controlling the opening and closing of the passage, baffle 25 controls the flow of raw material into the grinding gap.

[0152] A sealing strip is provided at the connection between the channel between the storage bin 24 and the grinding gap and the main unit 21 to prevent the coffee powder generated during the grinding process from floating out of the channel and entering other components of the main unit 21, thereby posing a risk of contaminating subsequent coffee powder.

[0153] The storage bin 24 can be arranged inside the host 21 or outside the host 21. In this embodiment, the storage bin 24 is arranged inside the housing of the host 21. Figure 4 、 8 As shown, the storage bin 24 is specifically arranged around the outside of the grinding motor.

[0154] In this embodiment, Figure 4 、 5As shown, the storage bin 24 is provided with a first cover 241 for sealing the storage bin 24. A second shock-absorbing portion 242 is provided between the storage bin 24 and the first cover 241 to reduce vibration and noise. The second shock-absorbing portion 242 is an elastic pad, which can be a rubber pad or a silicone pad. A silicone area 2411 is provided on the end surface of the first cover 241. The silicone area 2411 has a self-sealing area 2412 for finger insertion. Due to the elasticity of the silicone area 2411, when a finger is inserted into the self-sealing area 2412, the self-sealing area 2412 is deformed, allowing the finger to grip the self-sealing area 2412, thereby pulling the entire first cover 241 out of the storage bin 24 and allowing coffee beans to be added. When the finger leaves the self-sealing area 2412, the self-sealing area 2412 rebounds to its original shape, i.e., the self-sealing area 2412 becomes flat, thereby preventing dust and other foreign matter from accumulating on the self-sealing area 2412.

[0155] The silicone area 2411 is fixed to the first cover 241 via a pressing ring 244 , and the pressing ring 244 is fixed to the first cover 241 via a plurality of screws. A decorative cover 243 is also provided on the first cover 241 to shield the screws.

[0156] like Figure 4 and Figure 6 As shown, the grinder 2 also includes a safety shield 26, which is provided with a discharge port 261. When the safety shield 26 is fastened to the main unit 21, the safety shield 26 will envelop the upper grinding disc assembly 11 and the lower grinding disc assembly 12 as a whole to prevent damage caused by touching the high-speed rotating lower grinding disc assembly 12 during the grinding process, and the grinding gap is connected to the discharge port 261, so that the ground coffee powder can be discharged from the discharge port 261 to prevent the ground coffee powder from flying everywhere under the rotation inertia.

[0157] When the upper grinding disc assembly 11 is installed too low, the upper grinding disc assembly 11 will contact the lower grinding disc assembly 12. In this case, grinding will cause the two grinding disc assemblies to collide with each other, resulting in damage. In order to solve this problem, in this embodiment, a safety step surface 262 is provided on the inner side of the safety shield 26 to prevent the upper grinding disc assembly 11 and the lower grinding disc assembly 12 from contacting each other. Figure 4 and Figure 6As shown, the upper grinding disc assembly 11 extends a cylinder 116 downward. When the installation height of the upper grinding disc assembly 11 is the lowest value of the safety height, the lower end of the cylinder 116 just contacts the safety step surface 262, and the safety shield 26 can be normally installed on the main unit 21. However, if the installation position of the upper grinding disc assembly 11 is lower, the lower end of the cylinder 116 will abut against the safety step surface 262, making it impossible for the safety shield 26 to be normally installed on the main unit 21. In this way, when the user finds that the safety shield 26 cannot be installed, it can be found that the installation height of the upper grinding disc assembly 11 is too low, so that the upper grinding disc assembly 11 can be adjusted to the normal height in time, thereby effectively avoiding the upper grinding disc assembly 11 and the lower grinding disc assembly 12 from colliding with each other, and then the safety shield 26 is installed and the grinding is started.

[0158] In order to ensure that the safety guard 26 is installed in place every time the grinding operation is carried out, the user is prevented from being injured by starting the grinding operation without installing the safety guard 26. Figure 8 As shown, the main unit 21 is provided with a safety switch 218, which is electrically connected to the control circuit board 215. A first protrusion 263 is provided at the end of the safety shield 26. When the safety shield 26 is properly fastened to the main unit 21, the first protrusion 263 activates the safety switch 218, activating the grinder 2. If the user does not install the safety shield 26, the safety switch 218 will not be activated by the first protrusion 263, and the grinder 2 will not start. This avoids the safety hazard caused by starting the grinder without the safety shield 26 installed.

[0159] In this embodiment, if Figure 4 and Figure 6 As shown, the safety shield 26 is buckled onto the host 21, and its structure includes:

[0160] The outer wall of the main unit 21 is provided with a second protrusion 219, and the inner wall of the safety shield 26 is provided with a third recess 264. The third recess 264 is oriented toward the end of the safety shield 26. The second protrusion 219 can be snap-fitted with the third recess 264 to secure the safety shield 26 to the main unit 21. The fit between the second protrusion 219 and the third recess 264 facilitates installation and removal of the safety shield 26.

[0161] In this embodiment, Figure 4 and Figure 7 As shown, the grinder 2 further includes a cup body 27 , which is in communication with the discharge port 261 . The cup body 27 is used to receive the coffee powder discharged from the discharge port 261 .

[0162] More specifically, the discharge port 261 is located at the bottom of the safety shield 26, so that the coffee powder coming out of the grinding gap falls into the safety shield 26 and can be discharged from the discharge port 261 under the action of gravity; the cup body 27 is located directly below the safety shield 26, so that the coffee powder discharged from the discharge port 261 continues to fall into the cup body 27 under the action of gravity.

[0163] Due to the rotational inertia of the lower grinding disc assembly 12, the ground coffee powder has a certain speed. If it is discharged directly from the discharge port 261 into the cup body 27, it may fly from the discharge port 261 and cannot fall completely into the cup body 27. That is, a part of it will be scattered into the surrounding air, causing waste and air pollution.

[0164] In order to solve the above problems, in this embodiment, Figure 4 and Figure 7 As shown, the cup body 27 is provided with a retractable second cover body 271; the second cover body 271 is provided with a second through hole 2711 connected to the interior of the cup body 27, and a sealing ring is provided at the second through hole 2711 to ensure its sealed connection with the discharge port 261; when the discharge port 261 is connected to the second through hole 2711, the second cover body 271 presses against the discharge port 261 so that the interior of the cup body 27 and the interior of the safety shield 26 are both sealed.

[0165] Based on the above structure, the second cover 271 on the cup body 27 is directly and sealedly connected to the discharge port 261, so that the discharged coffee powder is completely introduced into the cup body 27, avoiding the occurrence of flying powder; and the retractable second cover 271 can be connected to a variety of discharge ports 261 at different heights, that is, the cup body 27 can adapt to the discharge ports 261 of grinders 2 at different heights.

[0166] Specifically, a spring assembly is provided on the second cover 271, such as Figure 7As shown, the second cover 271 is divided into an upper cover 27101, a middle cover 27102, and a lower cover 27103. The spring assembly is a compression spring. The middle cover 27102 has a hole for installing the compression spring. The upper cover 27101 passes through the middle cover 27102 and is fixed to the lower cover 27103. The compression spring is located between the upper cover 27101 and the middle cover 27102. The middle cover 27102 is connected and fixed to the cup body 27. The compression spring allows the distance between the upper cover 27101 and the middle cover 27102 to be adjusted to accommodate the different heights of the discharge port 261. The inner side of the second cover 271 is provided with a fourth recessed portion 2712, specifically the inner side of the middle cover 27102. The outer wall of the cup body 27 is provided with a third protrusion 272. The third protrusion 272 snaps into place with the fourth recessed portion 2712 to ensure that the second cover 271 is disposed on the cup body 27. The third protrusion 272 and the fourth recess 2712 realize a detachable connection between the second cover 271 and the cup 27, so that the second cover 271 can be removed after the coffee powder is collected, and the coffee powder in the cup 27 can be poured out.

[0167] When no coffee powder is contained, dust or other foreign matter may enter the cup body 27 through the second through hole 2711, thereby affecting subsequent use. Figure 7 As shown, the second cover 271 is provided with a plug 273 for blocking the second through hole 2711. When the cup 27 is not in use, the plug 273 can be used to block the second through hole 2711 to prevent external dust or other foreign matter from entering the cup 27. The plug 273 can be provided independently or connected to the second cover 271 or the cup 27 via a flexible connector 274. The flexible connector 274 can be a plastic belt, a belt, or a rope.

[0168] In this embodiment, if Figure 10 As shown, the main unit 21 is further provided with a bracket 28, and the bracket 28 is provided with a wiring groove 281 for limiting the swing of the connecting line between the power interface and the external power supply, thereby making the appearance of the grinder 2 more neat and also avoiding the wear of the connecting line by foreign objects during daily use.

[0169] In this embodiment, if Figure 11 As shown, the bracket 28 is provided with a base 29 for placing the cup body 27, and the bottom of the base 29 is provided with a foot suction cup 291. The setting of the foot suction cup 291 can adsorb and fix the base 29 on the table or other carrier where the grinder 2 is placed to prevent excessive vibration during grinding from causing shaking and generating noise.

[0170] Example 3:

[0171] This embodiment discloses another grinding machine 2, which differs from the grinding machine 2 of embodiment 2 in that:

[0172] In this embodiment, the upper grinding disc assembly 11 is provided with a plurality of retractable first push rods 113, and the main unit 21 is provided with a plurality of first recessed portions 212; when the upper grinding disc assembly 11 is connected to the main unit 21 so that the grinding gap reaches the set requirement, each first push rod 113 cooperates with each first recessed portion 212 to limit and fix the upper grinding disc assembly 11, thereby preventing the upper grinding disc assembly 11 from rotating. Figure 13 and Figure 14 As shown, the upper grinding disc assembly 11 is provided with a blind hole for the installation and extension of the first push rod 113. After adjusting the position of the upper grinding disc assembly 11, the first push rod 113 extends into the first recessed portion 212, so that the upper grinding disc assembly 11 is fixed to the main machine 21 in a limited position, preventing the upper grinding disc assembly 11 from rotating during grinding, thereby preventing instability in the grinding coarseness and reducing grinding efficiency.

[0173] Similar to the structure of Example 2, the end of the first push rod 113 is set to a smooth end, and the first recessed portion 212 is a smooth groove that can accommodate and only accommodate the smooth end. When the position of the upper grinding disc assembly 11 is adjusted, a torsional force is applied to the upper grinding disc assembly 11, and the smooth end slips off the first recessed portion 212 and the first push rod 113 is shortened at the same time, so that the first push rod 113 is separated from the first recessed portion 212, so that the upper grinding disc assembly 11 can rotate relative to the main machine 21, and then the position of the upper grinding disc assembly 11 can be adjusted in the axial direction to adjust the size of the grinding gap. In the process of adjusting the upper grinding disc assembly 11, when the first push rod 113 is exactly rotated to correspond to the first recessed portion 212, the first push rod 113 is extended again to cooperate with the first recessed portion 212. If a torsional force is applied again, the first push rod 113 can be separated from the first recessed portion 212 again. In this cycle, the axial position adjustment of the upper grinding disc assembly 11 can be achieved.

[0174] Specifically, each first push rod 113 is provided with a spring assembly, which is a specific structure for realizing the telescopic function of the first push rod 113. Figure 14 As shown, the first push rod 113 is provided with a flange that cooperates with the spring assembly. One end of the spring assembly rests on the flange, and the other end rests in the blind hole of the upper grinding disc assembly 11. When the first push rod 113 retracts, the spring assembly is compressed. When the first push rod 113 extends, the spring assembly pushes the first push rod 113 out. The spring assembly is a compression spring.

[0175] Example 4:

[0176] This embodiment provides a grinding method, which is relatively simple and convenient to operate and provides a strong user experience, and includes the following steps:

[0177] 1. Prepare the raw materials to be ground; insert your finger into the self-sealing area 2412 of the silicone area 2411 of the first cover 241 to separate the first cover 241 from the storage bin 24, add the raw materials to be ground into the storage bin 24, and then close the first cover 241;

[0178] 2. Install the grinding machine 2 of Example 2 or 3: Connect the upper grinding disc assembly 11 to the main machine 21, ensuring that the upper grinding disc assembly 11 is installed at the highest point, and connect the lower grinding disc assembly 12 to the drive mechanism 22;

[0179] 3. Move the upper grinding disc assembly 11 along the axial direction of the upper grinding disc assembly 11 with reference to the limit scale line 115 and the mark line 214 to adjust the grinding gap and ensure the grinding coarseness;

[0180] 4. After adjusting the grinding gap, a safety shield 26 is fastened to the main machine 21 to entirely enclose the upper grinding disc assembly 11 and the lower grinding disc assembly 12, with the discharge port 261 of the safety shield 26 communicating with the grinding gap;

[0181] 5. After the safety shield 26 is fastened to the main unit 21, ensure that it is in place, i.e., the safety switch 218 is in the triggered state, and then the cup body 27 is sealed and connected to the discharge port 261 of the safety shield 26, ready to receive the ground coffee powder;

[0182] 6. Activate the grinding amount adjustment button to select the desired grinding amount, then press the start button 216 to start the drive mechanism 22 (which can be a grinding motor) to drive the lower grinding disc assembly 12 to rotate;

[0183] 7. Open the baffle 25, place the raw material to be ground into the grinding gap and start grinding. The ground coffee powder falls into the cup body 27. After the raw material to be ground in the grinding gap is ground, press the start button 216 again to close the drive mechanism 22 to complete the grinding. Remove the cup body 27 and pour out the coffee powder inside. Then you can brew the coffee.

[0184] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A grinding machine, comprising a main machine, characterized in that: It also includes a driving mechanism and a grinding mechanism; The grinding mechanism includes an upper grinding disc assembly and a lower grinding disc assembly, which are independently arranged; the upper grinding disc assembly is provided with a connection portion that can be detachably connected to the outside, and the lower grinding disc assembly is driven by the outside to rotate and can be detached independently; the upper grinding disc assembly and the lower grinding disc assembly cooperate with each other to form a grinding gap; the upper grinding disc assembly can move along its axial direction to adjust the size of the grinding gap; when the lower grinding disc assembly is installed in place and the upper grinding disc assembly moves upward along its axial direction to an extreme tight fit state with the outside, the grinding gap is at its maximum value; The upper grinding disc assembly is detachably connected to the main machine via the connecting portion thereon, and the upper grinding disc assembly can be moved upward along its axial direction to a state of extreme tight fit with the main machine; When the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirement, the upper grinding disc assembly is limited and fixed to prevent rotation; The lower grinding disc assembly can be detachably connected to the driving mechanism and rotate along with the driving mechanism; When the lower grinding disc assembly is connected in place and the upper grinding disc assembly and the main machine are in an extremely tight fit state, the grinding gap is at its maximum value; The main unit is provided with a power interface for connecting an external power supply, a control circuit board, and a start button; the power interface and the start button are electrically connected to the control circuit board; the grinder also includes a safety shield, and the safety shield is provided with a discharge port; when the safety shield is buckled to the main unit, the safety shield envelops the upper grinding disc assembly and the lower grinding disc assembly as a whole, and the grinding gap and the discharge port are communicated with each other; the grinder also includes a cup body, which is communicated with the discharge port; the discharge port is located at the bottom of the safety shield, and the cup body is located directly below the safety shield; the cup body is provided with a retractable second cover body; the second cover body is provided with a second through hole communicated with the interior of the cup body, and a sealing ring is provided at the second through hole; when the discharge port is communicated with the second through hole, the second cover body presses against the discharge port so that the interior of the cup body and the interior of the safety shield are both sealed; The inner side of the safety shield is provided with a safety step surface to prevent the upper grinding disc assembly and the lower grinding disc assembly from fitting together; the main unit is provided with a safety switch, which is electrically connected to the control circuit board; the port of the safety shield is provided with a first protrusion; when the safety shield is correctly fastened to the main unit, the first protrusion triggers the safety switch to start the grinder.

2. The grinding machine according to claim 1, characterized in that: The connecting portion of the upper grinding disc assembly is a first thread.

3. The grinding machine according to claim 2, characterized in that: The first thread is an external thread.

4. The grinding machine according to claim 1, characterized in that: The driving mechanism is located above the upper grinding disc assembly; the output shaft of the driving mechanism axially penetrates the upper grinding disc assembly and is connected to the lower grinding disc assembly.

5. The grinding machine according to claim 4, characterized in that: An inlet is provided on the end surface of the upper grinding disc assembly, and the output shaft of the driving mechanism axially passes through the inlet and is connected to the lower grinding disc assembly.

6. The grinding machine according to any one of claims 1 to 5, characterized in that The upper grinding disc assembly is detachably connected to the main machine via the connecting portion, and its structural form includes: The connecting portion is a first thread, and the main unit is provided with a second thread; the first thread and the second thread are threadedly connected so that the upper grinding disc assembly can move along its axial direction.

7. The grinding machine according to claim 6, characterized in that: The first thread is set as an external thread located on the outer wall of the upper grinding disc assembly, and the second thread is set as an internal thread located on the inner side of the main machine.

8. The grinding machine according to any one of claims 1 to 5, characterized in that When the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirement, the upper grinding disc assembly is limited and fixed to prevent rotation, and one structural form thereof includes: The upper grinding disc assembly is provided with a plurality of retractable first push rods, and the main unit is provided with a plurality of first recessed portions; when the upper grinding disc assembly is connected to the main unit so that the grinding gap reaches the set requirements, each of the first push rods and each of the first recessed portions respectively cooperate to limit and fix the upper grinding disc assembly to prevent the upper grinding disc assembly from rotating.

9. The grinding machine according to claim 8, characterized in that: Each of the first push rods is provided with a spring assembly.

10. The grinding machine according to any one of claims 1 to 5, characterized in that When the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirement, the upper grinding disc assembly is limited and fixed to prevent rotation. Another structural form thereof includes: The main machine is provided with a plurality of retractable second push rods, and the upper grinding disc assembly is provided with a plurality of second recessed portions; when the upper grinding disc assembly is connected to the main machine so that the grinding gap reaches the set requirements, each of the second push rods and each of the second recessed portions respectively cooperate to limit and fix the upper grinding disc assembly to prevent the upper grinding disc assembly from rotating.

11. The grinding machine according to claim 10, characterized in that: Each of the second push rods is provided with a spring assembly.

12. The grinding machine according to any one of claims 1 to 5, characterized in that: The lower grinding disc assembly can rotate synchronously with the driving mechanism.

13. The grinding machine according to claim 12, characterized in that: A flattening portion is provided on the output shaft of the driving mechanism, and a first through hole is provided on the end surface of the lower grinding disc assembly; the flattening portion cooperates with the first through hole to enable the lower grinding disc assembly to rotate synchronously with the driving mechanism.

14. The grinding machine according to claim 13, characterized in that: The grinding machine also includes a lower grinding disc fixing nut; A third thread is provided on the output shaft of the driving mechanism, which is located between the flat portion and the head of the output shaft of the driving mechanism; when the flat portion is engaged with the flat portion of the first through hole, the lower grinding disc fixing nut is threadedly engaged with the third thread to fix the lower grinding disc assembly to the driving mechanism.

15. The grinding machine according to claim 14, characterized in that: The lower grinding disc assembly is provided with a column which is convenient for operation and installation.

16. The grinding machine according to claim 5, characterized in that: A guide block is provided in the feed port for guiding the raw material to be ground into the grinding gap.

17. The grinding machine according to any one of claims 1 to 5, characterized in that: The outer wall of the upper grinding disc assembly is evenly distributed with limit scale lines, and the main machine is provided with marking lines corresponding to the limit scale lines.

18. The grinding machine according to any one of claims 1 to 5, characterized in that: The driving mechanism is a grinding motor, and a first shock-absorbing part is provided between the grinding motor and the host. The host is also provided with a grinding amount adjustment knob, and the grinding amount adjustment knob and the grinding motor are both electrically connected to the control circuit board.

19. The grinding machine according to claim 18, characterized in that: The main machine is provided with a storage bin for containing raw materials to be ground; the grinding gap is communicated with the storage bin.

20. The grinding machine according to claim 19, characterized in that: The main machine is provided with a baffle; the baffle can be rotated by a certain angle along the circumferential direction of the main machine to open or close the passage between the storage bin and the grinding gap; A sealing strip is provided at the connection between the passage between the storage bin and the grinding gap and the main machine.

21. The grinding machine according to claim 19, characterized in that: The storage bin is arranged on the outside of the grinding motor.

22. The grinding machine according to claim 19, characterized in that: The storage bin is provided with a first cover, and a second shock-absorbing portion is provided between the first cover and the storage bin; and a silicone rubber area is provided on the end surface of the first cover.

23. The grinding machine according to claim 1, wherein The safety shield is buckled onto the host, and its structure includes: The outer wall of the main unit is provided with a second protrusion, and the inner wall of the safety shield is provided with a third recessed portion, and the flow direction of the third recessed portion is toward the port of the safety shield; The second protrusion can be snap-fitted with the third recessed portion so that the safety shield is snapped onto the host.

24. The grinding machine according to claim 1, wherein: The second cover body is provided with a spring assembly; the inner side of the second cover body is provided with a fourth recessed portion, the outer wall of the cup body is provided with a third protrusion, and the third protrusion is snap-fitted with the fourth recessed portion so that the second cover body is arranged on the cup body.

25. The grinding machine according to claim 1, characterized in that: The second cover body is provided with a plug for blocking the second through hole.

26. The grinding machine according to claim 1, characterized in that: The host is further provided with a bracket, and the bracket is provided with a wiring groove for limiting the swing of the connection line between the power interface and the external power supply.

27. The grinding machine according to claim 26, characterized in that: The bracket is provided with a base for placing the cup body, and the bottom of the base is provided with a foot suction cup.

28. A grinding method, characterized in that: The steps include: Prepare the raw materials to be ground; Install the grinding machine according to any one of claims 1 to 27: connect the upper grinding disc assembly to the main machine, and connect the lower grinding disc assembly to the drive mechanism; Moving the upper grinding disc assembly along its axial direction to adjust the grinding gap and ensure the grinding coarseness; Starting the driving mechanism to drive the lower grinding disc assembly to rotate; The raw material to be ground is placed in the grinding gap to complete the grinding.

29. The grinding method according to claim 28, wherein: After the grinding gap is adjusted, a safety shield is fastened to the main machine to integrally enclose the upper grinding disc assembly and the lower grinding disc assembly, and the discharge port of the safety shield is in communication with the grinding gap.

30. The grinding method according to claim 29, wherein: After the safety shield is buckled onto the main machine, a cup body is sealed and connected to the discharge port of the safety shield.

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