Bean discharging, weighing and grinding system of coffee machine and coarse and fine grinding mechanism of fully-automatic coffee machine

Abstract

The present invention provides a system, comprising: coffee bean mounts, which are configured to be embedded into a coffee machine body and to support coffee bean bins, each coffee bean mount comprising a protrusion extending from the bottom of the coffee bean mount, and the protrusion comprising an opening extending therethrough; bean sweeping cavity upper covers and bean sweeping cavity lower covers, which are arranged in the openings and define cavities therebetween; bean sweeping gears, arranged in the cavities; and bean discharging holes, each formed in one side of the corresponding bean sweeping cavity lower cover and extending out of the bottom edge of the corresponding opening.

Description

Coffee machine under the bean weighing and grinding system and full-automatic coffee machine coarse and fine grinding mechanism TECHNICAL FIELD

[0001] The present application relates to a coffee bean box mechanism and a coffee bean grinding mechanism, and is a coffee machine under the bean weighing and grinding system and a full-automatic coffee machine coarse and fine grinding mechanism. BACKGROUND

[0002] A coffee machine is a full-automatic or semi-automatic electric appliance that collects powder grinding, powder pressing, powder loading, brewing, and residue removal for the whole process of brewing coffee. When grinding coffee powder, a certain amount of coffee beans is usually put into a bean box and ground through a grinder. However, it is difficult to control the amount of coffee beans in most cases, and users are usually non-professionals who cannot grind a certain amount of coffee powder. Moreover, after taking out the bean box, there are residual coffee beans above the grinding disc, which affects the mixing of coffee beans of different flavors in the next grinding process and affects the quality of coffee taste. The coffee bean grinding device of such a coffee machine is provided with a weighing sensor, such as the Chinese patent document with the application number 201980072105.9, the application publication date 2021.06.29, and the invention name "coffee grinder with weight control device for grinding coffee dose". The weighing sensor of the coffee grinder is mechanically connected to the fork, and the microprocessor controls the operation of the motor to determine the desired final dose of ground coffee in the filter holder. The weighing sensor continuously controls the detected weight of the ground coffee through the delivery channel to the filter holder resting on the fork. However, the structure design and position setting of the weighing module of the above-mentioned similar products are not good, which makes it difficult to integrate with the coffee bean grinding assembly. Moreover, there are problems such as easy scattering of coffee beans when the coffee bean bin of the coffee bean grinding assembly is taken out, difficult automatic locking of the coffee bean bin when it is taken out, and easy jamming of coffee beans during the coffee bean feeding process.

[0003] A coffee machine is a full-automatic or semi-automatic electric appliance that collects powder grinding, powder pressing, powder loading, brewing, and residue removal for the whole process of brewing coffee. When grinding coffee powder, the coarseness and fineness of the grinding need to be adjusted according to personal preferences, especially for drip coffee machines, which have high requirements for the fineness of coffee bean grinding. The coarseness and fineness adjustment of such coffee machines is usually achieved through a knob on the machine body, such as the Chinese patent document with the application number 202320048768.0, the authorization announcement date 2023.06.23, and the utility model name "coffee machine grinder device". The grinding mechanism of such a coffee machine, such as the Chinese patent document with the application number 202110647506.1, the application publication date 2021.08.06, and the invention name "coffee grinder". However, the above-mentioned products and similar products are difficult to automatically reset and detect the coarseness and fineness adjustment mechanism before the machine is turned on again after grinding, and the coarseness and fineness adjustment mechanism is difficult to automatically adjust the gear selection through the button, and is prone to powder blocking, powder accumulation, and powder retention. SUMMARY

[0004] To overcome the above deficiencies, the present application provides a system comprising:

[0005] a coffee bean bin support configured to be embedded into a coffee machine body and to support a coffee bean bin, the coffee bean bin support comprising a protrusion extending from a bottom of the coffee bean bin support, the protrusion comprising an opening extending therethrough;

[0006] a coffee bean bin upper cover and a coffee bean bin lower cover disposed in the opening and defining a cavity therebetween;

[0007] a coffee bean bin gear disposed within the cavity; and

[0008] a lower bean hole formed in a side of the coffee bean bin lower cover and extending beyond a bottom edge of the opening.

[0009] In an alternative aspect, the coffee bean bin comprises a first coffee bean bin and a second coffee bean bin, wherein:

[0010] the first coffee bean bin support comprises a first protrusion extending from a bottom of the first coffee bean bin support, the first protrusion comprising a first opening extending therethrough; and

[0011] the second coffee bean bin support comprises a second protrusion extending from a bottom of the second coffee bean bin support, the second protrusion comprising a second opening extending therethrough.

[0012] In another alternative aspect, the coffee bean bin upper cover is a first coffee bean bin upper cover, the coffee bean bin lower cover is a first coffee bean bin lower cover, and the cavity is a first cavity; and

[0013] wherein the first coffee bean bin upper cover and the first coffee bean bin lower cover are disposed in the first opening of the first coffee bean bin support.

[0014] In another alternative aspect, the system further comprises a second coffee bean bin upper cover and a second coffee bean bin lower cover disposed in the second opening of the second coffee bean bin support and defining a second cavity therebetween.

[0015] In another alternative aspect, the coffee bean bin gear is a first coffee bean bin gear disposed in the first cavity, wherein the system further comprises a second coffee bean bin gear disposed in the second cavity.

[0016] In another alternative aspect, the lower bean hole is a first lower bean hole formed in a side of the first coffee bean bin lower cover and extending beyond a bottom edge of the first opening, wherein the system further comprises a second lower bean hole formed in a side of the second coffee bean bin lower cover and extending beyond a bottom edge of the second opening.

[0017] In another alternative, the first lower bean hole and the second lower bean hole are disposed facing the middle side of the first lower bean cavity cover and the second lower bean cavity cover.

[0018] In another alternative, the lower bean hole is disposed as a 90 degree opening.

[0019] In another alternative, the bean sweeping gear comprises helical gear leaves.

[0020] The present disclosure also provides a system comprising:

[0021] a coffee bean bin support configured to be embedded into a coffee machine body and to support a coffee bean bin, the coffee bean bin support comprising a protrusion extending from a bottom of the coffee bean bin support, the protrusion comprising an opening extending therethrough;

[0022] a support plate disposed on the bottom of the coffee bean bin support adjacent to the protrusion;

[0023] a load cell support secured to the support plate; and

[0024] a load cell connected to the load cell support.

[0025] In an alternative, the coffee bean bin support comprises a first coffee bean bin support and a second coffee bean bin support, wherein:

[0026] the first coffee bean bin support comprises a first protrusion extending from a bottom of the first coffee bean bin support, the first protrusion comprising a first opening extending therethrough; and

[0027] the second coffee bean bin support comprises a second protrusion extending from a bottom of the second coffee bean bin support, the second protrusion comprising a second opening extending therethrough.

[0028] In another alternative, the support plate is a first support plate disposed on the bottom of the first coffee bean bin support adjacent to the first protrusion, and wherein the system further comprises a second support plate disposed on the bottom of the second coffee bean bin support adjacent to the second protrusion.

[0029] In another alternative, the load cell support comprises a first load cell support portion and a second load cell support portion.

[0030] In another alternative, the load cell is a first load cell connected to the first load cell support portion, and wherein the system further comprises a second load cell connected to the second load cell support portion.

[0031] In another alternative, the first load cell and the second load cell are disposed longitudinally symmetrically.

[0032] In another alternative, the load cell is pressed laterally from both sides against the load cell support.

[0033] The present application also provides a system comprising:

[0034] a coffee bean bin;

[0035] a coffee bean bin support configured to fit into a coffee machine body and support the coffee bean bin, the coffee bean bin support comprising a protrusion extending from a bottom of the coffee bean bin support, the protrusion comprising an opening extending therethrough;

[0036] a sweep gear disposed inside the opening; and

[0037] a motor comprising an output shaft configured to mechanically connect to and drive the sweep gear, wherein the motor is disposed in a housing, the housing disposed below the protrusion, wherein a first end of the output shaft extends through a top surface of an eccentric portion of the housing.

[0038] In an alternative, the coffee bean bin support comprises a first coffee bean bin support and a second coffee bean bin support, wherein:

[0039] the first coffee bean bin support comprises a first protrusion extending from a bottom of the first coffee bean bin support, the first protrusion comprising a first opening extending therethrough; and

[0040] the second coffee bean bin support comprises a second protrusion extending from a bottom of the second coffee bean bin support, the second protrusion comprising a second opening extending therethrough.

[0041] In another alternative, the sweep gear is a first sweep gear disposed inside the first opening, and wherein the system further comprises a second sweep gear disposed inside the second opening.

[0042] In another alternative, the motor is a first motor comprising a first output shaft configured to mechanically connect to and drive the first sweep gear, and wherein the system further comprises a second motor comprising a second output shaft mechanically connected to and driving the second sweep gear.

[0043] In another alternative, further comprising:

[0044] a first motor gear mechanically connected to a second end of the output shaft opposite the first end;

[0045] a second motor gear mechanically connected to the first motor gear;

[0046] a third motor gear mechanically connected to the second motor gear;

[0047] a motor shaft comprising a first end mechanically connected to the third motor gear.

[0048] In another alternative, the motor is a synchronous motor.

[0049] The present application also provides a system comprising:

[0050] a grinder body comprising an exit channel extending therethrough;

[0051] a lower cone knife disposed in the exit channel;

[0052] a cone knife adjustment disc surrounding the lower cone knife, an inner wall of the cone knife adjustment disc comprising a plurality of lead-in slots;

[0053] an upper cone knife disposed in the exit channel, surrounding the lower cone knife and surrounded by the cone knife adjustment disc, an outer wall of the upper cone knife comprising a plurality of cylindrical protrusions disposed equidistantly on the inner wall, wherein each cylindrical protrusion of the plurality of protrusions is configured to engage and move along one of the plurality of slots to rotate the upper cone knife as the cone knife adjustment disc rotates relative to the upper cone knife, thereby increasing or decreasing a spacing between the lower cone knife and the upper cone knife,

[0054] wherein the cone knife adjustment disc is rotatable through at least 20 positions.

[0055] In one alternative, the plurality of slots comprises three slots and the plurality of protrusions comprises three protrusions.

[0056] In another alternative, further comprising a stepper motor operatively connected to the cone knife adjustment disc.

[0057] In another alternative, further comprising a control panel operatively connected to the stepper motor via a wire, the control panel comprising a coarse-fine adjustment button.

[0058] In another alternative, further comprising at least one gear configured to mechanically connect the stepper motor to the cone knife adjustment disc.

[0059] In another alternative, each rotation of the stepper motor rotates the at least one gear by 3.4°.

[0060] In another alternative, the cone knife adjustment disc is rotatable through 25 positions.

[0061] In another alternative, the adjustment angle range of the conical knife adjustment disc is 85°.

[0062] The present application also provides a system comprising:

[0063] a grinder body comprising an ejection channel extending therethrough;

[0064] a lower conical knife disposed in the ejection channel;

[0065] a conical knife adjustment disc surrounding the lower conical knife, an inner wall of the conical knife adjustment disc comprising a plurality of lead-in grooves;

[0066] an upper conical knife disposed in the ejection channel, surrounding the lower conical knife and surrounded by the conical knife adjustment disc, and configured to be mechanically connected to the conical knife adjustment disc;

[0067] an arc-shaped protrusion disposed on the bottom outer side of the conical knife adjustment disc; and

[0068] a switch disposed on the grinder body,

[0069] wherein the conical knife adjustment disc is configured to rotate the upper conical knife to increase or decrease the spacing between the upper conical knife and the lower conical knife among a plurality of spaced configurations, wherein when the upper conical knife and the lower conical knife are in a zero-spaced configuration, the arc-shaped protrusion is configured to trigger the switch.

[0070] In an alternative, a bean grinding motor is further included, which is operatively connected to the lower conical knife.

[0071] In another alternative, the bean grinding motor is a horizontal motor.

[0072] In another alternative, further comprising:

[0073] a shaft mechanically connected to the bottom of the lower conical knife;

[0074] a first gear mechanically connected to the shaft;

[0075] a worm gear assembly mechanically connected to the first gear and a motor shaft of the bean grinding motor.

[0076] In another alternative, the worm gear assembly comprises a double-layer integrated worm gear and a cylindrical gear.

[0077] In another alternative, further comprising a sweeping gear disposed below the lower conical knife in the ejection channel.

[0078] In another alternative, the sweeping gear is mechanically connected to the lower conical knife.

[0079] In another alternative, the inner bottom of the discharge channel extending below the sweeping gear is ramped.

[0080] In another alternative, a coffee bean bin is further included, which is configured to contain coffee beans and arranged to distribute the coffee beans into the top of the discharge channel above the upper conical knife.

[0081] In another alternative, at least two C-shaped support frames are further included, which are configured to fix the coffee bean bin to the top of the grinder main body.

[0082] To overcome the above shortcomings, the purpose of the present application is to provide a coffee machine lower bean weighing grinding system to the art, which solves the technical problems of the poor structure design and position setting of the weighing module of the existing similar products, which leads to the difficulty of integrated assembly with the bean grinding assembly, the easy scattering of beans when the bean bin of the bean grinding assembly is taken out, the difficulty of automatic locking of the bean bin when it is taken out, and the easy blocking of beans during the lower bean process. The purpose is achieved by the following technical scheme.

[0083] A coffee machine lower bean weighing grinding system, which comprises a bean box assembly and a bean grinding assembly, a weighing module is arranged below the bean bin of the bean box assembly, a sweeping gear in the bean bin is driven to rotate by the output shaft of a bottom synchronous motor to lower the beans, the coffee beans during the lower bean process enter the grinding knife of the bean grinding assembly through the lower bean channel of the bean grinding assembly, and the coffee beans after grinding are discharged through the powder discharge channel of the bean grinding assembly. The top of the sweeping gear in the bean bin is provided with a movable door which is coaxially and integrally sleeved with the sweeping gear, the round surface of the movable door is provided with a lower bean through hole, the lower bean through hole of the movable door corresponds to the upper bean through hole in the bean bin, and the upper end of the movable door is circularly attached to the bottom of the bean bin. The structure design points are that the bottom of the bean bin of the bean box assembly is provided with a main support which is embedded into the body of the coffee machine, the bottom of the main support is provided with a cavity which is circularly protruded, a sweeping cavity upper cover and a sweeping cavity lower cover are arranged in the cavity, the sweeping gear is arranged in the cavity formed by the sweeping cavity upper cover and the sweeping cavity lower cover, the lower bean hole on one side of the sweeping cavity lower cover extends out of the opening on one side of the protrusion of the bottom of the main support, and simultaneously aligns with the lower bean channel of the bean grinding assembly; the bottom of the bean bin is provided with a bean box assembly support plate along one side, and the bottom of the bean box assembly support plate is provided with the weighing module, the weighing module is respectively provided with a weighing sensor, and the weighing module is fixed to the bean box assembly support plate along one side of the bottom of the bean bin through a weighing module support. The above structure facilitates the production and assembly of the weighing module, and the weighing module can sense the weight change in real time during the lower bean process.

[0084] The grinding assembly is topped with symmetrically arranged bean hopper assemblies, with the bean-feeding holes of the bean-sweeping chamber's lower cover positioned opposite each other. The top cover of the bean hopper of the grinding assembly is rectangular, with the inner transition slope facing the bean-feeding hole. A bean hopper support plate is positioned below the edge of the inner transition slope of the top cover. Weighing modules are symmetrically positioned longitudinally in the middle below the edge of the inner transition slope of the top cover. The two weighing modules are laterally pressed and fixed to the weighing module bracket. Each square bean hopper support plate has an arc-shaped notch on one side, which fits against the outer diameter of the circular protrusion at the bottom of the main support. The above is a structural embodiment of two symmetrically arranged bean hopper assemblies.

[0085] The upper bean passage in the bean hopper has an upward-protruding positioning cylinder in the middle. The bottom of the upper bean passage in the bean hopper has symmetrical tongue grooves on both sides. The positioning cylinder of the bean hopper extends out of the top shaft of the movable door in the bean hopper and has a movable door knob. The top cover of the bean sweeping chamber has symmetrical tongue notches on both sides where it fits with the bottom opening of the bean hopper. The bean sweeping chamber cover and the main support have tongue passages corresponding to the tongue notches. The edge ribs of the movable door have symmetrical tongues. The bottom of the tongues is snapped into the edge ribs of the movable door. At the same time, the tongues are set in the tongue grooves at the bottom of the bean hopper. One end of the tongues is inserted into the tongue passages of the bean sweeping chamber cover and the main support through the tongue notches. The edge ribs of the movable door have symmetrical Z-shaped stepped tracks that taper inward and are integrally connected on both sides of the edge ribs of the movable door. The Z-shaped stepped tracks on both sides of the edge ribs of the movable door are parallel to each other. As a result, the gap at the edge of the movable door changes, squeezing the protruding tongue to move left and right. In the narrow part of the track, the protruding tongue is squeezed out, and in the wide part, the protruding tongue is retracted. When the two protruding tongues are retracted inward to the Z-shaped step by rotating the movable door knob, the movable door opens at the same time, and the bean hopper is locked and cannot move freely.

[0086] The movable door has a raised positioning post on the edge ring rib of the track, or a raised limiting post on the inner circular surface of the edge ring rib of the track. The tongue is limited to slide along the track of the movable door by the limiting post and / or positioning post of the movable door.

[0087] The outer edge of the tongue protrudes into a rectangular shape, and a rib is provided in the middle of the top. The rectangular protrusion of the tongue corresponds to the rectangular hole of the tongue of the main support, and the rib of the tongue corresponds to the T-shaped hole of the tongue of the bean hopper.

[0088] The bottom of the bean bin is provided with two symmetrically arranged mounting columns, the mounting columns of the bean bin are positioned and inserted into the two symmetrically arranged and open column grooves in the main body support, the outer diameter of the upper cover of the bean sweeping cavity is provided with two symmetrically arranged upper screw mounting ears, the outer diameter of the corresponding lower cover of the bean sweeping cavity is provided with two symmetrically arranged lower screw mounting ears, and the upper screw mounting ears of the upper cover of the bean sweeping cavity and the lower screw mounting ears of the lower cover of the bean sweeping cavity are fixed to the bottom of the main body support by screws.

[0089] The top cover of the bean sweeping cavity is provided with a quarter-circular sector surface on one side of the inner diameter of the cover opening, and the sector surface is provided with a lower bean inclined surface on one side.

[0090] One end of the output shaft extending out of the synchronous motor is eccentrically arranged on one side, the gear at the other end of the output shaft in the synchronous motor is connected with the gear at the motor shaft through a reduction gear, and the shell of the synchronous motor is fixedly arranged on the protrusion at the bottom of the main body support.

[0091] The lower bean hole of the lower cover of the bean sweeping cavity is arranged at an opening of 90 degrees.

[0092] The blade of the bean sweeping gear is arranged in the form of a helical gear blade.

[0093] The structure of the present application is reasonable, convenient to produce and use, especially convenient to assemble and install as a whole, and the operation of taking out and putting in the bean bin is simple and not easy to cause bean jamming; the present application is suitable for use as a coffee bean weighing and grinding system and further improvement of similar products.

[0094] To overcome the above-mentioned deficiencies, the present application aims to provide a full-automatic coffee machine coarse and fine grinding mechanism to solve the technical problems that it is difficult for the existing similar products to automatically reset the coarse and fine adjustment mechanism before starting again after grinding, to realize detection, and to automatically adjust the gear selection through the key, and to easily cause powder blocking, powder accumulation and powder retention.

[0095] The application discloses a full-automatic coffee machine coarse-fine grinding mechanism, which comprises a bean box assembly and a bean grinding assembly. A bean sweeping gear in a bean bin of the bean box assembly is driven to rotate by an output shaft of a bottom synchronous motor to feed beans, coffee beans in the feeding process are fed into a grinding knife of the bean grinding assembly through a bean feeding channel of the bean grinding assembly, and the coffee beans are discharged after being ground through a powder discharging channel of the bean grinding assembly. The powder discharging channel of the bean grinding assembly is arranged on one side of a shell below a powder sweeping cavity of a grinder main body assembly, a lower cone knife is arranged above a powder sweeping gear in the powder sweeping cavity and extends out, the lower cone knife is installed in a circular groove directly above the grinder main body, an outer grinder main body assembly on the outer side of the lower cone knife is provided with a cone knife adjusting disc, the cone knife adjusting disc is driven to rotate by a stepping motor, and the lower cone knife is driven to rotate by a bean grinding motor. The structural design points are that the cone knife adjusting disc of the bean grinding assembly is internally provided with an upper cone knife assembly, three equidistant columnar protrusions on the outer diameter of the upper cone knife assembly are put into a track in an import groove of the cone knife adjusting disc through gaps of three import grooves on the inner wall of the cone knife adjusting disc, an arc protrusion is arranged on one side of the bottom of the cone knife adjusting disc, a micro switch is arranged on the grinder main body assembly corresponding to the arc protrusion, the cone knife adjusting disc is limitingly sleeved on a top aperture of the grinder main body assembly through two symmetric adjusting disc fixing pieces arranged on the inner diameter of the bottom disc opening, meanwhile, the cone knife adjusting disc is clamped into an outer circular ring of the outer grinder main body assembly outside the lower cone knife groove, and a positioning column is inserted into a positioning groove in a circular groove on the inner side of the outer circular ring of the outer grinder main body assembly along an outer side circle of a protrusion on the bottom of the adjusting disc fixing piece. The cone knife adjusting disc of the bean grinding assembly automatically monitors and finds zero position when being started by the stepping motor, and the arc protrusion of the cone knife adjusting disc triggers the micro switch. Therefore, the stepping motor is reversely rotated to adjust the rotation of the cone knife adjusting disc, the automatic adjustment of the key of the degree of coarseness and fineness during grinding is realized, and the automatic zero return of the cone knife adjusting disc is realized. The columnar protrusions on the outer diameter of the upper cone knife assembly are convenient for separating the upper cone knife assembly from the cone knife adjusting disc, taking out the upper cone knife assembly, fixing the upper cone knife assembly and the cone knife adjusting disc into an integral whole, adjusting the grinding gap between the upper cone knife assembly and the lower cone knife by adjusting the rotation of the cone knife adjusting disc, and realizing the grinding coarseness and fineness adjustment of coffee beans.

[0096] The adjustment angle range between the teeth openings on the outer diameter of the cone knife adjusting disc is 85°, the gear position of the cone knife adjusting disc is changed by 3.4° each time, and the total number of gears is 25. The stepping motor is connected with a circuit board of a control panel through a circuit, and the control panel is provided with a coarseness and fineness adjustment gear button. Therefore, the degree of coarseness and fineness is set through the coarseness and fineness adjustment gear button of the control panel, the stepping motor automatically drives the cone knife adjusting disc to rotate to the set degree of coarseness and fineness, and existing similar products generally adopt a knob mode to set and adjust the degree of coarseness and fineness.

[0097] The bottom annular ring surface of the cone cutter adjusting disc is provided with two pairs of symmetrically arranged arc-shaped tooth openings, the grinder main body assembly at the bottom of one side arc-shaped tooth opening is provided with an extended thimble, the thimble is abutted with the arc-shaped tooth opening at one side of the bottom of the cone cutter adjusting disc, and the arc-shaped tooth opening is a thickness adjusting stroke of the cone cutter adjusting disc.

[0098] The bean grinding motor is a horizontal motor, the outer diameter tooth opening of the cone cutter adjusting disc is engaged with the transmission gear one, the transmission gear one is engaged with the transmission gear two, the transmission gear two is connected with the motor shaft of the extended grinder main body assembly stepper motor, the stepper motor is fixedly arranged at one side of the grinder main body assembly, the symmetrically arranged other side of the grinder main body assembly is provided with a horizontal motor, the transmission shaft of the horizontal motor is engaged with the gear at the shaft rod of the bottom of the lower cone cutter through a worm and a worm gear assembly, the worm gear assembly is a combination of an upper and lower double-layer integrated worm gear and a cylindrical gear, and is arranged in the grinder main body assembly through the bottom cover at the bottom of the grinder main body assembly; the transmission gear two of the grinder main body assembly is arranged at 90 degrees from the center shaft between the transmission gear one and the cone cutter adjusting disc and the horizontal motor respectively. The transmission gear one and the worm gear assembly are arranged as required, and the horizontal motor and the worm structure can also be replaced by an existing reduction gear and a vertical motor combination. The 90-degree arrangement between the three and the arrangement of the horizontal motor are arranged to reduce the space occupation of the corresponding parts.

[0099] The shaft portion bottom of the transmission gear one is provided with symmetrically arranged clamping hooks, and the shaft portion bottom of the transmission gear one is fixed with the grinder main body assembly through the clamping hooks.

[0100] The two pairs of symmetrically arranged pin columns at the top of the powder sweeping gear in the grinder main body assembly are inserted into the bottom of the lower cone cutter, the shaft rod of the gear at the bottom of the lower cone cutter is connected with the lower cone cutter through the powder sweeping gear, and the powder sweeping gear, the lower cone cutter and the gear at the bottom of the lower cone cutter are integrated. The above is a specific structural embodiment of the powder sweeping gear, the lower cone cutter and the gear at the bottom of the lower cone cutter.

[0101] The powder sweeping gear and the powder outlet channel are arranged in tangential arrangement, and the inner bottom of the powder sweeping cavity below the powder sweeping gear is arranged in a slope shape. This design effectively prevents the accumulation of residual powder during the powder outlet process and effectively prevents powder accumulation.

[0102] The top hole portion of the lower bean channel extends from one side of the bottom of the bean box assembly.

[0103] The inner diameter ring surface of the top hole of the upper cone cutter assembly is provided with a hinge fixed to the steel wire handle of the upper cone cutter assembly. Thus, the upper cone cutter assembly can be conveniently taken out by rotating the steel wire handle.

[0104] The bean box assembly is fixed to the top of the grinder main body assembly of the bean grinding assembly through the bottom of at least two lower bean channel support frames, and the lower bean channel support frame is in a C shape.

[0105] The present application has reasonable structure design, compact structure, small volume, and is not easy to produce powder blocking, powder accumulation and powder retention, and in particular, the coffee bean grinding coarseness setting and zeroing are convenient; it is suitable for use as a full-automatic coffee machine coarseness grinding mechanism, and further improvement of similar products. BRIEF DESCRIPTION OF DRAWINGS

[0106] Figure 1 is a side view of the weighing module of the present application, and the dashed line in the figure is the bean box assembly support plate below the main support, and the movable door knob and the bean bin cover are omitted.

[0107] Figure 2 is a top view of Figure 1, and A-A and B-B cross sections are made, and the dashed line is part of the internal structure.

[0108] Figure 3 is an exploded view of the bean box assembly of Figure 1.

[0109] Figure 4 is a cross-sectional view of A-A of Figure 2.

[0110] Figure 5 is a cross-sectional view of B-B of Figure 2.

[0111] Figure 6 is a bottom view of Figure 1.

[0112] Figure 7 is an enlarged view of the movable door and the bean sweeping gear assembly state of Figure 3, and the tongue of the movable door.

[0113] Figure 8 is a top view of Figure 7.

[0114] Figure 9 is an enlarged view of the upper cover of the bean sweeping cavity of Figure 3.

[0115] Figure 10 is an enlarged bottom view of the bean bin of Figure 3.

[0116] Figure 11 is a perspective view of the present application, and the slot cover plate at the powder channel is omitted.

[0117] Figure 12 is a side view of the horizontal motor of Figure 11.

[0118] Figure 13 is a bottom view of Figure 11, and the dashed line is part of the internal structure, and A-A cross section is made, and the powder sweeping gear is tangent to the powder outlet channel.

[0119] Figure 14 is a bottom view of Figure 13, and the dashed line is the internal gear structure.

[0120] Figure 15 is a cross-sectional view of A-A of Figure 13.

[0121] Figure 16 is a schematic diagram of the exploded structure of the coffee grinder assembly in Figure 11.

[0122] Figure 17 is a second exploded structural diagram of the coffee grinder assembly shown in Figure 11.

[0123] Attached Figures and Their Names: 91. Bean Box Assembly; 92. Bean Grinding Assembly; 93. Bean Compartment Cover; 94. Movable Door Knob; 95. Bean Compartment; 9501. Positioning Cylinder; 9502. Tongue Groove; 9503. Mounting Post; 96. Tongue; 97. Movable Door; 9701. Track; 9702. Positioning Post; 9703. Limiting Post; 98. Main Body Support; 99. Bean Sweeping Chamber Upper Cover; 9901. Tongue Notch; 9902. Bean Drop Sloping Surface; 910. Bean Box Assembly Support Plate; 911. Bean Sweeping Gear; 912. Bean Sweeping Chamber Lower Cover; 91201. Bean Drop Hole; 913. Synchronous Motor; 914. Weighing Module; 915. Weighing Module Support; 1. Bean Box Assembly; 2. Bean Grinding Assembly; 201. Bean Drop Channel; 202. Upper Conical Blade Assembly; 2021. 2022. Columnar protrusion, 2023. Positioning post, 2024. Wire handle, 205. Adjustment plate fixing piece, 206. Conical knife adjustment plate, 207. Inlet groove, 208. Arc-shaped toothed mouth, 209. Transmission gear one, 2051. Hook, 206. Transmission gear two, 207. Grinding machine main body assembly, 2071. Positioning groove, 208. Stepper motor, 209. Powder outlet channel, 210. Horizontal motor, 211. Powder sweeping gear, 212. Lower conical knife, 213. Ejector pin, 3. Bean outlet channel support frame, 4. Micro switch. Detailed Implementation

[0124] The structure and use of the present application are further described in combination with the drawings. As shown in Figures 1-10, the system comprises a bean box assembly 91 and a grinding assembly 92, the bean box assembly is provided with a weighing module 914 below the bean bin 95, the sweep bean gear 911 in the bean bin is driven to rotate by the output shaft of the bottom synchronous motor 913 to drop beans, the coffee beans in the dropping process enter the grinding knife of the grinding assembly through the bean dropping channel of the grinding assembly, and the ground coffee beans are discharged through the powder outlet channel of the grinding assembly. The top of the sweep bean gear in the bean bin is provided with a movable door 97 which is coaxially sleeved with the sweep bean gear, the circular surface of the movable door is provided with a bean dropping hole, the bean dropping hole of the movable door corresponds to the bean dropping hole of the bean bin, the upper end of the movable door is circularly attached to the bottom of the bean bin, and the top opening of the bean bin is provided with a bean bin cover 93. The bottom of the bean bin of the above-mentioned bean box assembly is provided with a main body support 98 embedded in the body of the coffee machine, the bottom of the main body support is provided with a sweep bean cavity upper cover 99 and a sweep bean cavity lower cover 912, the sweep bean gear 911 is arranged in the cavity formed by the sweep bean cavity upper cover and the sweep bean cavity lower cover, the bean dropping hole 91201 on one side of the sweep bean cavity lower cover extends out of the opening on one side of the protrusion at the bottom of the main body support and is aligned with the bean dropping channel of the grinding assembly; the bottom of the bean bin is provided with a bean box assembly support plate 910 along the side, the bottom of the bean box assembly support plate is provided with the weighing module 914, the weighing module is provided with a weighing sensor, and the weighing module is fixed to the bean box assembly support plate along the side of the bottom of the bean bin through the weighing module support 915. The bean box assembly is symmetrically arranged above the grinding assembly, the bean dropping hole of the sweep bean cavity lower cover of the bean box assembly is arranged on one side of the middle, the top cover of the bean bin is rectangular, the transition slope in the top cover of the bean bin is directed to one side of the bean dropping hole, the bean box assembly support plate is arranged below the transition slope on one side of the top cover of the bean bin, the weighing module is longitudinally and symmetrically arranged in the middle below the transition slope on one side of the top cover of the bean bin, and the weighing modules on both sides are transversely and tightly fixed with the weighing module support. One side of the square bean box assembly support plate is respectively provided with an arc-shaped notch, and the bean box assembly support plate is attached to the outer diameter of the circular protrusion at the bottom of the main body support 8 through the arc-shaped notch on one side.

[0125] The positioning cylinder 9501 is protruded upward in the middle of the upper bean through hole in the bean bin. The tongue groove 9502 is symmetrically arranged in the middle of the bottom of the upper bean through hole of the bean bin. The positioning cylinder of the movable door is protruded out of the bean bin and is provided with a movable door knob 94. The top cover of the bean sweeping cavity is symmetrically provided with a tongue notch 9901 on both sides of the cover opening of the bean sweeping cavity. The top cover of the bean sweeping cavity and the main body support are provided with a tongue through hole corresponding to the tongue notch. The edge of the movable door is symmetrically provided with a tongue 96. The bottom of the tongue is buckled to the edge of the movable door. At the same time, the tongue is arranged in the tongue groove at the bottom of the bean bin. One end of the tongue is inserted into the tongue through hole of the bean sweeping cavity and the main body support through the tongue notch of the bean sweeping cavity. The edge of the movable door is symmetrically provided with a Z-shaped stepped track 9701 which is integrally connected and is reduced inward. The Z-shaped stepped tracks of the edges of the movable door are arranged in parallel. The edge of the movable door is provided with a protruding positioning column 9702. The inner side of the edge of the movable door is provided with a protruding limiting column 9703. The tongue is limited to slide in the track of the edge of the movable door through the limiting column and / or the positioning column of the movable door. The outer side of the tongue is protruded from one end of the edge of the movable door and is rectangular. The top of the tongue is provided with a protruding rib. The rectangular protrusion of the tongue is rectangular hole corresponding to the tongue through hole of the main body support. The protruding rib of the tongue is T-shaped hole corresponding to the tongue through hole of the bean bin.

[0126] The outer diameter of the bottom opening of the bean bin is provided with two symmetrically arranged mounting columns 9503. The mounting column of the bean bin is inserted into the column groove which is symmetrically arranged and opened in the main body support. The outer diameter of the upper cover of the bean sweeping cavity is provided with two symmetrically arranged upper screw mounting ears. The outer diameter of the lower cover of the bean sweeping cavity is provided with two symmetrically arranged lower screw mounting ears. The upper screw mounting ears of the upper cover of the bean sweeping cavity and the lower screw mounting ears of the lower cover of the bean sweeping cavity are fixed to the bottom of the main body support by screws. The inner diameter of the top cover of the bean sweeping cavity is provided with a quarter circular fan-shaped surface on one side. The fan-shaped surface is provided with a lower bean inclined surface on one side. One end of the output shaft of the synchronous motor is eccentrically arranged on one side. The gear at the other end of the output shaft of the synchronous motor is connected with the gear at the motor shaft through a reduction gear. The shell of the synchronous motor is fixedly arranged on the protrusion at the bottom of the main body support. The lower bean hole of the lower cover of the bean sweeping cavity is arranged at an angle of 90 degrees. The blade of the bean sweeping gear is arranged as a helical gear blade.

[0127] The system is mainly composed of two parts, the bean box assembly and the grinding assembly. The bean bin of the bean box assembly is provided with a bean bin cover and a positioning cylinder protruding upward. The movable door is provided with a cylindrical shaft. The shaft of the movable door is inserted into the positioning cylinder of the bean bin. Meanwhile, the bean bin knob is inserted into the shaft above the movable door extending from the positioning cylinder in the bean bin. The bottom of the bean bin is provided with two tongue grooves into which two tongues are fitted. The outer wall of the bottom of the bean bin is provided with two T-shaped openings. The outer wall of the main support is provided with a rectangular opening. The tongues are in and out of the openings. The movable door is provided with two arc-shaped tracks. The tracks are arc-shaped from thick to thin. The thick end is provided with a closed end face. The upper end of the movable door is attached to the bottom of the bean bin. The movable door is provided with a bean sweeping gear below. The upper end of the bean sweeping gear is inserted into the cylindrical cylinder at the bottom of the movable door. The bean bin is provided with four screw columns on the top. The screw columns are inserted into the four positioning holes of the upper cover of the bean sweeping cavity and are fixed by screws. The bottom of the bean sweeping cavity is provided with a bean sweeping cavity bottom cover. The bean sweeping cavity bottom cover is provided with four positioning holes. The bottom of the upper cover of the bean sweeping cavity is provided with screw columns corresponding to the bean sweeping cavity bottom cover. The bottom of the bean sweeping cavity bottom cover is provided with two screw holes corresponding to the synchronous motor at the bottom. The rotating column on the synchronous motor at the bottom is inserted into the cylindrical cylinder at the bottom of the bean sweeping gear. The main support is provided with four screw columns in the slotted groove below. The screw columns are arc-shapedly distributed. The square bean box assembly support plate below is provided with an arc-shaped notch. The screw holes on the left and right sides correspond to each other. The bean box assembly support plate is provided with two circular screw holes in the middle corresponding to the screw holes on the heavy module below. The two screw holes at the rear of the heavy module correspond to the screw holes on the heavy module support below.

[0128] In use, first, sufficient coffee beans are loaded into the bean bin. The weight of the coffee beans in the bean bin is displayed on the weighing module. Then, the movable door knob is twisted clockwise by 90°. The movable door knob is connected to the movable door. Therefore, the movable door also rotates clockwise by 90°. The movable door is opened. The coffee beans enter the cavity. In this process, the two tongues shrink inward due to the influence of the track. The bean bin is locked and cannot move freely. Then, the required amount of coffee beans is selected according to the needs, for example, 39g of coffee beans. Then, the synchronous motor is controlled by the program to rotate clockwise. The bean sweeping gear (the blades of the bean sweeping gear are designed to be inclined to prevent the beans from being stuck) rotates clockwise. The coffee beans in the cavity are swept out of the notch. The swept coffee beans enter the powder sweeping cavity of the grinding assembly. The coffee beans are ground while falling. Finally, when the bean bin is removed, the coffee beans are stuck by the bean sweeping gear during the falling process. The falling process is limited to prevent the beans from being scattered when the bean bin is removed.

[0129] The structure and use of the present application will be further described in combination with the drawings. As shown in Figures 11-17, the mechanism includes a bean box assembly 1 and a grinding assembly 2. The bean box assembly has a bean bin with a sweep bean gear rotating to drop beans through the output shaft of a bottom synchronous motor. The dropped beans pass through a bean dropping channel 201 of the grinding assembly to a grinding blade of the grinding assembly for grinding. The ground coffee beans are discharged through a powder outlet channel 209 of the grinding assembly. The powder outlet channel of the grinding assembly is arranged on one side of a shell below a powder sweeping cavity of a grinder main assembly 207. A lower conical knife 212 is arranged above a powder sweeping gear 211 in the powder sweeping cavity of the grinder main assembly. The lower conical knife is installed in a circular groove directly above the grinder main assembly. A conical knife adjusting disc 204 is arranged on the outer side of the lower conical knife. The conical knife adjusting disc is driven to rotate by a stepping motor 208. The lower conical knife is driven to rotate by a grinding motor. The conical knife adjusting disc of the grinding assembly has an upper conical knife assembly 202. Three equidistant cylindrical protrusions 2021 on the outer diameter of the upper conical knife assembly are inserted into the guide grooves of the conical knife adjusting disc through the gaps of three guide grooves 2041 on the inner wall of the conical knife adjusting disc. An arc-shaped protrusion is arranged on the bottom of the outer diameter of the conical knife adjusting disc. A micro switch 4 is arranged on the grinder main assembly corresponding to the arc-shaped protrusion. The conical knife adjusting disc is limitingly fitted into the top aperture of the grinder main assembly through the two symmetrically arranged adjusting disc fixing pieces 203 on the inner diameter of the bottom disc opening. Meanwhile, the conical knife adjusting disc is clamped into the outer circular ring of the lower conical knife groove of the grinder main assembly. The outer side ring along the protrusion of the adjusting disc fixing piece bottom is inserted into the positioning groove 2071 in the inner side annular groove of the outer circular ring of the grinder main assembly through the positioning column 2022.

[0130] The adjustment angle range between the tooth openings on the outer diameter of the conical knife adjusting disc is 85°. The gear position of the conical knife adjusting disc changes by 3.4° each time, and the total number of gears is 25. The stepping motor is connected to the circuit board of the control panel through a circuit. The control panel has coarse and fine adjustment gear buttons. The bottom annular ring surface of the conical knife adjusting disc has two symmetrically arranged arc-shaped tooth openings 2042. The grinder main assembly on one side of the bottom of the arc-shaped tooth opening has an extended thimble 213. The thimble abuts against the arc-shaped tooth opening on one side of the bottom of the conical knife adjusting disc. The arc-shaped tooth opening is the coarse and fine adjustment stroke of the conical knife adjusting disc.

[0131] The above-mentioned bean grinding motor is a horizontal motor 210, the outer diameter tooth opening of the cone knife adjusting disc is engaged with a transmission gear one 205, the transmission gear one is engaged with a transmission gear two 206, the transmission gear two is connected with the motor shaft of the stepping motor extending from the grinder main assembly, the stepping motor is fixedly arranged on one side of the grinder main assembly, the symmetric other side of the grinder main assembly is provided with a horizontal motor, the transmission shaft of the horizontal motor is engaged with the gear at the shaft rod of the bottom of the lower cone knife through a worm and a worm gear assembly, the worm gear assembly is a combination of an upper and lower double-layer integral worm gear and a cylindrical gear, and is arranged in the grinder main assembly through the bottom cover at the bottom of the grinder main assembly; the transmission gear two of the grinder main assembly is arranged at 90 degrees between the central shaft of the transmission gear one and the cone knife adjusting disc and the horizontal motor respectively. The shaft part bottom of the transmission gear one is provided with symmetrically arranged clamping hooks 2051, and the shaft part bottom of the transmission gear one fixes the grinder main assembly through the clamping hooks.

[0132] The pin columns symmetrically arranged on the top of the powder sweeping gear in the above-mentioned grinder main assembly are inserted into the bottom of the lower cone knife, the shaft rod of the gear at the bottom of the lower cone knife is connected with the powder sweeping gear and the lower cone knife, and the powder sweeping gear, the lower cone knife and the gear at the bottom of the lower cone knife are integrated. The powder sweeping gear and the powder outlet channel are arranged in tangential shape, and the bottom of the powder sweeping cavity below the powder sweeping gear is arranged in slope shape. The top hole opening part of the lower bean channel extends from one side of the bottom of the bean box assembly; the inner diameter ring surface of the top hole opening of the cone knife assembly is provided with a steel wire handle 2023 hinged and fixed to the upper cone knife assembly. The bean box assembly is fixed to the top of the grinder main assembly of the bean grinding assembly through the bottom of at least two lower bean channel support frames 3, and the lower bean channel support frame is in C shape.

[0133] The horizontal motor of the above-mentioned mechanism is connected with the cylindrical notch on one side of the grinder main assembly, the lower cone knife is installed in the circular groove directly above the grinder main assembly, the powder sweeping gear is arranged below the lower cone knife, the bottom of the powder sweeping cavity below the powder sweeping gear is arranged in slope shape, the powder sweeping gear and the powder outlet channel are arranged in tangential shape, the cone knife adjusting disc is clamped into the outer circular ring of the grinder main assembly outside the groove of the lower cone knife, the adjusting disc fixing piece is put into the cone knife adjusting disc, the smallest two holes on the adjusting disc fixing piece are aligned and installed with the guide columns on the grinder main assembly directly below, the three large holes of the adjusting disc fixing piece are aligned with the screw holes on the grinder main assembly and are fixed with adjusting disc fixing screws, the upper cone knife assembly has three columnar protrusions, the three columnar protrusions are aligned with the three guide grooves on the cone knife adjusting disc and are put into the gaps, then the lower bean channel is put into the upper cone knife assembly, the grinder main assembly has two through circular holes of different sizes, the four screw holes of the stepping motor are aligned with the four screw holes on the edge of the large circular hole, and the screws are fixed, the transmission gear two is fixed on the motor shaft of the stepping motor, and the transmission gear one is buckled into the small circular hole beside the large circular hole through the clamping hook structure to bear the transmission between the transmission gear two and the cone knife adjusting disc.

[0134] The upper conical knife assembly of the mechanism is installed as follows: first, align the three columnar protrusions on the upper conical knife assembly, put the three guide grooves on the conical knife adjusting disc into the tracks in the conical knife adjusting disc with the notch downward, then put the lower bean channel above the upper conical knife assembly, align the screw holes on the lower bean channel with the screw holes on the grinder main body assembly, and fix and support them with the left and right support frames of the lower bean channel, then rotate the conical knife adjusting disc counterclockwise by 85° to adjust it to the finest position as the initial gear, then press the "coarse" and "fine" buttons on the screen according to the needs to adjust the gears. Press the "coarse" button, and the stepping motor starts to drive the transmission gear II to rotate clockwise, the distance between the upper and lower conical knives starts to decrease, and the transmission gear I and the conical knife adjusting disc rotate counterclockwise, each press counterclockwise rotation by 3.4° is one gear, a total of 25 gears, and similarly, press the "fine" button, the distance between the upper and lower conical knives starts to increase in the opposite direction.

[0135] The coarse and fine adjustment gear buttons of the control panel are set to the coarse and fine levels, the coffee beans enter the powder sweeping cavity of the grinder assembly while being ground, the horizontal motor drives the lower conical knife and the powder sweeping gear to rotate, and the ground coffee powder is swept out by the powder sweeping gear through the powder sweeping channel to the powder outlet channel.

[0136] In summary, the mechanism uses a stepping motor to drive a gear transmission structure to automatically change the grinding coarseness and fineness, the columnar protrusions of the upper conical knife assembly cooperate with the guide groove notches of the conical knife adjusting disc to facilitate installation, and the user's desired coffee grinding coarseness and fineness can be automatically adjusted through program control. The existing similar products often do not return to zero gear after starting the machine, which is not conducive to user operation, so the mechanism adds a new function; if the arc protrusions on the conical knife adjusting disc do not touch the micro switch after starting, the system defaults to not being in zero gear, the stepping motor starts to drive the transmission gear and the conical knife adjusting disc to rotate clockwise, until the arc protrusions on the conical knife adjusting disc touch the micro switch, the system stops working, and the conical knife adjusting disc gear returns to zero.

Claims

1. A system comprising: a coffee bean bin holder configured to fit into a coffee machine body and support a coffee bean bin, the coffee bean bin holder including a protrusion extending from a bottom of the coffee bean bin holder, the protrusion including an opening extending therethrough; a bean sweep cavity upper cover and a bean sweep cavity lower cover disposed in the opening and defining a cavity therebetween; a bean sweep gear disposed within the cavity; and a lower bean hole formed in a side of the bean sweep cavity lower cover and extending beyond a bottom edge of the opening.

2. The system of claim 1, wherein the coffee bean bin includes a first coffee bean bin and a second coffee bean bin, wherein: the first coffee bean bin holder includes a first protrusion extending from a bottom of the first coffee bean bin holder, the first protrusion including a first opening extending therethrough; and the second coffee bean bin holder includes a second protrusion extending from a bottom of the second coffee bean bin holder, the second protrusion including a second opening extending therethrough.

3. The system of claim 2, wherein, the bean sweep cavity upper cover is a first bean sweep cavity upper cover, the bean sweep cavity lower cover is a first bean sweep cavity lower cover, and the cavity is a first cavity; and wherein the first bean sweep cavity upper cover and the first bean sweep cavity lower cover are disposed in the first opening of the first coffee bean bin holder.

4. The system of claim 3, further comprising a second bean sweep cavity upper cover and a second bean sweep cavity lower cover disposed in the second opening of the second coffee bean bin holder and defining a second cavity therebetween.

5. The system of claim 4, wherein, the bean sweep gear is a first bean sweep gear disposed in the first cavity, wherein the system further comprises a second bean sweep gear disposed in the second cavity.

6. The system of claim 4 or 5, wherein, the lower bean hole is a first lower bean hole formed in a side of the first bean sweep cavity lower cover and extending beyond a bottom edge of the first opening, wherein the system further comprises a second lower bean hole formed in a side of the second bean sweep cavity lower cover and extending beyond a bottom edge of the second opening.

7. The system of claim 6, wherein, the first lower bean hole and the second lower bean hole are disposed to face a middle side of the first bean sweep cavity lower cover and the second bean sweep cavity lower cover.

8. The system of any one of claims 1-7, wherein, the lower bean hole is disposed to be a 90 degree opening.

9. The system of any one of claims 1-8, wherein, the bean sweep gear includes a helical gear lobe.

10. A system comprising: a coffee bean bin holder configured to fit into a coffee machine body and support a coffee bean bin, the coffee bean bin holder including a protrusion extending from a bottom of the coffee bean bin holder, the protrusion including an opening extending therethrough; a support plate disposed in the bottom of the coffee bean bin holder adjacent to the protrusion; a load cell holder secured to the support plate; and a load cell connected to the load cell holder.

11. The system of claim 10, wherein, the coffee bean bin holder includes a first coffee bean bin holder and a second coffee bean bin holder, wherein: the first coffee bean bin holder includes a first protrusion extending from a bottom of the first coffee bean bin holder, the first protrusion including a first opening extending therethrough; and the second coffee bean bin holder includes a second protrusion extending from a bottom of the second coffee bean bin holder, the second protrusion including a second opening extending therethrough.

12. The system of claim 11, wherein, The support plate is a first support plate disposed on the bottom of the first coffee bin holder adjacent to the first protrusion, and wherein the system further comprises a second support plate disposed on the bottom of the second coffee bin holder adjacent to the second protrusion.

13. The system of claim 12, wherein, The load cell holder comprises a first load cell support portion and a second load cell support portion.

14. The system of claim 13, wherein, The load cell is a first load cell connected to the first load cell support portion, and wherein the system further comprises a second load cell connected to the second load cell support portion.

15. The system of claim 14, wherein, The first load cell and the second load cell are disposed longitudinally symmetrically.

16. The system of any one of claims 10-15, wherein, The load cell is pressed laterally from both sides against the load cell holder.

17. A system comprising: a coffee bin; a coffee bin holder configured to be embedded in a coffee machine body and to support the coffee bin, the coffee bin holder comprising a protrusion extending from a bottom of the coffee bin holder, the protrusion comprising an opening extending therethrough; a bin sweep gear disposed inside the opening; and a motor comprising an output shaft configured to be mechanically connected to and to drive the bin sweep gear, wherein the motor is disposed in a housing, the housing being disposed below the protrusion, wherein a first end of the output shaft extends through a top eccentric surface of the housing.

18. The system of claim 17, wherein, The coffee bin holder comprises a first coffee bin holder and a second coffee bin holder, wherein: the first coffee bin holder comprises a first protrusion extending from a bottom of the first coffee bin holder, the first protrusion comprising a first opening extending therethrough; and the second coffee bin holder comprises a second protrusion extending from a bottom of the second coffee bin holder, the second protrusion comprising a second opening extending therethrough.

19. The system of claim 18, wherein, The bin sweep gear is a first bin sweep gear disposed inside the first opening, and wherein the system further comprises a second bin sweep gear disposed inside the second opening.

20. The system of claim 19, wherein, The motor is a first motor comprising a first output shaft configured to be mechanically connected to and to drive the first bin sweep gear, and wherein the system further comprises a second motor comprising a second output shaft mechanically connected to and to drive the second bin sweep gear.

21. The system of any one of claims 17-20, further comprising: a first motor gear mechanically connected to a second end of the output shaft opposite the first end; a second motor gear mechanically connected to the first motor gear; a third motor gear mechanically connected to the second motor gear; a motor shaft comprising a first end mechanically connected to the third motor gear.

22. The system of any one of claims 17-21, wherein, The motor is a synchronous motor.

23. A system comprising: a grinder body comprising an exit channel extending therethrough; a lower burr disposed in the exit channel; a burr adjustment disc surrounding the lower burr, an inner wall of the burr adjustment disc comprising a plurality of lead-in slots; a burr adjustment knob disposed on the burr adjustment disc; and a motor comprising a motor shaft mechanically connected to the burr adjustment knob. an upper conical knife disposed in the discharge channel, surrounding the lower conical knife and being surrounded by the conical knife adjustment disc, an outer wall of the upper conical knife comprising a plurality of columnar protrusions equidistantly disposed on the inner wall, wherein each columnar protrusion of the plurality of protrusions is configured to engage into and move along one of the plurality of grooves to rotate the upper conical knife as the conical knife adjustment disc rotates relative to the upper conical knife, thereby increasing or decreasing the spacing between the lower conical knife and the upper conical knife, wherein the conical knife adjustment disc is rotatable by at least 20 degrees.

24. The system of claim 23, wherein, The plurality of grooves comprises three grooves and the plurality of protrusions comprises three protrusions.

25. The system of claim 23 or 24, further comprising a stepper motor operatively connected to the conical knife adjustment disc.

26. The system of claim 25, further comprising a control panel operatively connected to the stepper motor via a wire, the control panel comprising a coarse-fine adjustment button.

27. The system of claim 25 or 26, further comprising at least one gear configured to mechanically connect the stepper motor to the conical knife adjustment disc.

28. The system of claim 27, wherein, Each rotation of the stepper motor brings the at least one gear to rotate by 3.4°.

29. The system of any one of claims 23-28, wherein, The conical knife adjustment disc is rotatable by 25 degrees.

30. The system of any one of claims 23-29, wherein, The conical knife adjustment disc is adjustable by an angle range of 85°.

31. A system, comprising: a grinder body comprising a discharge channel extending therethrough; a lower conical knife disposed in the discharge channel; a conical knife adjustment disc surrounding the lower conical knife, an inner wall of the conical knife adjustment disc comprising a plurality of lead-in grooves; an upper conical knife disposed in the discharge channel, surrounding the lower conical knife and being surrounded by the conical knife adjustment disc, and being configured to be mechanically connected to the conical knife adjustment disc; an arc-shaped protrusion disposed on an outer side of a bottom of the conical knife adjustment disc; and a switch disposed in the grinder body, wherein the conical knife adjustment disc is configured to rotate the upper conical knife to increase or decrease a spacing between the upper conical knife and the lower conical knife among a plurality of spacing configurations, wherein the arc-shaped protrusion is configured to trigger the switch when the upper conical knife and the lower conical knife are in a zero-spacing configuration.

32. The system of claim 31, further comprising a bean grinder motor operatively connected to the lower conical knife.

33. The system of claim 32, wherein, The bean grinder motor is a horizontal motor.

34. The system of claim 32 or 33, further comprising: a shaft mechanically connected to a bottom of the lower conical knife; a first gear mechanically connected to the shaft; a worm gear assembly mechanically connected to the first gear and a motor shaft of the bean grinder motor.

35. The system of claim 34, wherein, The worm gear assembly comprises a double-layered integrated worm gear and a cylindrical gear.

36. The system of any one of claims 31-35, further comprising a sweep gear disposed below the lower conical knife in the discharge channel.

37. The system of claim 36, wherein, The sweep gear is mechanically connected to the lower conical knife.

38. The system of claim 36 or 37, wherein, An inner bottom of the discharge channel extending below the sweep gear is ramped.

39. The system of any one of claims 31-38, further comprising a coffee bean bin configured to hold coffee beans and positioned to dispense the coffee beans into a top portion of the discharge channel above the upper beveler.

40. The system of claim 39, further comprising at least two C-shaped support brackets configured to secure the coffee bean bin to a top portion of the grinder body.

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