Bean feeding, weighing and grinding mechanism of coffee machine

Abstract

The utility model relates to a bean feeding, weighing and grinding mechanism of a coffee machine, and aims to solve the technical problems that the structural design and the position of a weighing module of an existing similar product are not good enough, a bean bin of a bean grinding assembly is difficult to automatically lock when being taken out, and beans are easy to scatter and get stuck. The mechanism is characterized in that a main body support embedded into a coffee machine body is arranged at the edge of the bottom of a bean bin at a bean box assembly of the mechanism, a bean sweeping cavity upper cover and a bean sweeping cavity lower cover are arranged in a circular protruding cavity at the bottom of the main body support, and a bean sweeping gear is arranged in a cavity formed by the bean sweeping cavity upper cover and the bean sweeping cavity lower cover; a bean box assembly supporting plate is arranged below an edge opening in one side of the bottom of the bean bin, and the weighing module and the weighing module support are arranged at the bottom of the bean box assembly supporting plate. The bottom of the protruding tongue of the movable door is buckled to the edge ring rib of the movable door, the protruding tongue is arranged in the protruding tongue groove in the bottom of the bean bin, and one end of the protruding tongue is sequentially inserted into the upper cover of the bean sweeping cavity and the protruding tongue through hole of the main body support through the protruding tongue notch of the upper cover of the bean sweeping cavity.

Description

Technical Field

[0001] The utility model relates to a coffee bean box mechanism, which is a coffee bean weighing and grinding mechanism for a coffee machine. Background Art

[0002] A coffee machine is a fully automatic or semi-automatic appliance that integrates the entire process of brewing coffee, including grinding, pressing, filling, brewing, and removing grounds. Usually, when grinding coffee powder, a certain amount of coffee beans needs to be put into a bean box and ground by a grinder. However, in most cases, it is difficult to control the amount of coffee beans, and most users are non-professionals who cannot quantitatively grind the amount of coffee powder they need. Moreover, after taking out the bean box, there will be residual coffee beans on the grinding disc, which will affect the next time that coffee beans of different flavors are mixed together and affect the taste quality of the coffee. The bean grinding device of this type of coffee machine is provided with a weighing sensor, such as the application number 201980072105.9 disclosed in the Chinese patent literature, the application publication date 2021.06.29, and the invention name "Coffee grinder with a weight control device for ground coffee dosage"; 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 that passes through the conveying channel to the filter holder leaning on the fork. However, the structural design and position setting of the weighing module of the above-mentioned similar products are poor, which makes it difficult to assemble and use them as a whole with the bean grinding assembly; and there are problems such as beans being easily spilled when the bean bin of the bean grinding assembly is taken out, the bean bin is difficult to automatically lock when taken out, and beans are easily stuck during the bean feeding process. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a coffee machine bean weighing and grinding mechanism to the art, so as to solve the technical problems that the weighing module structure design and position setting of the existing similar products are poor, which makes it difficult to assemble and use it as a whole with the bean grinding assembly, and the bean bin of the bean grinding assembly is easy to spill beans when it is taken out, it is difficult to achieve automatic locking of the bean bin when it is taken out, and the bean jamming process is easy to occur. The purpose is achieved through the following technical solutions.

[0004] A coffee machine bean feeding weighing and grinding mechanism, the mechanism 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 bean sweeping gear in the bean bin is driven to rotate by the output shaft of a bottom synchronous motor to feed beans, the coffee beans in the bean feeding process enter the grinding knife of the bean grinding assembly through a bean feeding channel of the bean grinding assembly to be ground, and the ground coffee beans are discharged through a powder outlet channel of the bean grinding assembly, a movable door is arranged on the top of the bean sweeping gear in the bean bin coaxially sleeved with the bean sweeping gear, a bean feeding through hole is arranged on the circular surface of the movable door, the bean feeding through hole of the movable door corresponds to the bean upper through hole in the bean bin, and the upper end of the movable door is in contact with the bottom of the bean bin and is correspondingly circular. The key points of the structural design are that the bean bin bottom edge of the bean bin assembly is provided with a main body bracket embedded in the coffee machine body, the circular raised cavity at the bottom of the main body bracket is provided with a bean sweeping cavity upper cover and a bean sweeping cavity lower cover, the bean sweeping gear is arranged in the cavity formed by the bean sweeping cavity upper cover and the bean sweeping cavity lower cover, the bean discharge hole on one side of the bean sweeping cavity lower cover extends out of the opening on one side of the raised bottom of the main body bracket, and is aligned with the bean discharge channel of the bean grinding assembly; a bean bin assembly support plate is provided below the bottom edge of one side of the bean bin, the bean bin assembly support plate is provided at the bottom of the bean bin assembly support plate, and weighing sensors are respectively provided in the weighing modules, which are fixed to the bean bin assembly support plate at one side of the bottom edge of the bean bin through a weighing module bracket. The above structure facilitates the production and assembly of the weighing module, and the weighing module senses the weight change in real time during the bean discharge process.

[0005] The bean box assembly is symmetrically arranged above the bean grinding assembly, and the lower bean hole of the lower cover of the bean sweeping cavity of the bean box assembly is arranged on one side relative to the middle; the bean bin top cover of the bean grinding assembly is rectangular, and the transition slope in the bean bin top cover faces the lower bean hole, the bean box assembly support plate is arranged below the edge of the transition slope on one side of the bean bin top cover, and the weighing modules are longitudinally symmetrically arranged in the middle below the edge of the transition slope on one side of the bean bin top cover, and the weighing modules on both sides are transversely pressed and fixed to the weighing module bracket; arc-shaped notches are respectively arranged on one side of the square bean box assembly support plate, and the bean box assembly support plate is respectively fitted to the outer diameter of the circular protrusion at the bottom of the main bracket through the arc-shaped notch on one side. The above is a structural embodiment of symmetrically arranged two bean box assemblies.

[0006] A positioning cylinder protruding upward is provided in the middle of the upper bean through hole in the bean bin, and tongue grooves are symmetrically provided in the middle of both sides of the bottom of the upper bean through hole in the bean bin, a positioning cylinder of the bean bin is extended out of the top axis of the movable door in the bean bin and a movable door knob is provided, and tongue notches are symmetrically provided on both sides of the upper cover of the bean sweeping cavity where the top cover opening of the upper cover of the bean sweeping cavity and the bottom bin opening of the bean bin are fitted, and tongue through holes are provided on the upper cover of the bean sweeping cavity and the main body bracket corresponding to the tongue notches; tongues are symmetrically provided on the edge circle ribs of the movable door, and the bottom of the tongue is buckled in the edge circle ribs of the movable door, and the tongue is arranged in the tongue groove at the bottom of the bean bin, and one end of the tongue passes through the tongue notch of the upper cover of the bean sweeping cavity and is inserted into the tongue through holes of the upper cover of the bean sweeping cavity and the main body bracket in sequence; a Z-shaped stepped track that is reduced inward and connected as one is symmetrically provided on both sides of the edge circle ribs of the movable door, and the Z-shaped stepped tracks of the edge circle ribs on both sides of the movable door are arranged in parallel. As a result, the track at the edge of the movable door changes the gap to squeeze the tongue to move left and right, the tongue is squeezed out at the narrow part of the track, and the tongue is retracted at the wide part; when the two tongues are retracted inward to the Z-shaped step by rotating the movable door knob, the movable door is opened and the bean bin is locked and cannot move freely.

[0007] The edge ring rib of the track of the movable door is provided with a raised positioning column, or the inner circular surface of the edge ring rib of the track of the movable door is provided with a raised limiting column, and the protruding tongue is limited by the limiting column and / or positioning column of the movable door to slide on the track of the edge ring rib of the movable door.

[0008] The outer side of the protruding tongue extends outward from one end of the edge ring rib and is convex in a rectangular shape, and a convex rib is provided in the middle of the top. The rectangular protrusion of the protruding tongue corresponds to the protruding tongue through hole of the main frame and is a rectangular hole, and the convex rib of the protruding tongue corresponds to the protruding tongue through hole of the bean bin and is a T-shaped hole.

[0009] The outer diameter of the bottom bin opening of the bean bin is provided with mounting columns arranged symmetrically in pairs, and the mounting columns of the bean bin are positioned and inserted into the column grooves arranged symmetrically in pairs and opened in the main frame, and the outer diameter of the upper cover of the bean sweeping cavity is provided with upper screw mounting ears arranged symmetrically in pairs, and the corresponding outer diameter of the lower cover of the bean sweeping cavity is provided with lower screw mounting ears arranged symmetrically in pairs, 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 frame by screws. The above is a specific embodiment of the corresponding parts in the bean box assembly that are convenient to be connected as one, and it is also convenient to take out the corresponding parts of the bean bin and the movable door together from the main frame.

[0010] A quarter-circular sector surface is provided on one side of the inner diameter of the top cover of the bean sweeping cavity, and a bean lowering inclined surface is provided on one side of the sector surface. The bean lowering inclined surface design of the bean sweeping cavity upper cover has a buffering effect on the coffee beans during the bean lowering process to prevent the coffee beans from piling up and getting stuck.

[0011] One end of the output shaft extending from the synchronous motor is eccentrically arranged at one side, and the gear at the other end of the output shaft in the synchronous motor is connected to the gear at the motor shaft through a reduction gear, and the housing of the synchronous motor is fixedly arranged at the protrusion at the bottom of the main bracket.

[0012] The bean placing hole of the lower cover of the bean sweeping cavity is set to be opened at 90 degrees, so as to prevent beans from being stuck during the bean placing process.

[0013] The blades of the bean sweeping gear are arranged in the form of helical gear blades, thereby further preventing beans from getting stuck during the bean dropping process.

[0014] The utility model has reasonable structural design and is easy to produce and use, especially the overall assembly is convenient, the bean bin is easy to take out and put in, and beans are not easily stuck. The utility model is suitable for use as a bean weighing and grinding mechanism for a coffee machine, and is a further improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of one side of the weighing module of the utility model. The dotted line in the figure is the support plate of the bean box assembly below the main frame, and the movable door knob and the bean bin cover are omitted.

[0016] Figure 2 yes Figure 1 A schematic diagram of the top view of the structure, in which AA and BB sections are shown, and the dotted line represents part of the internal structure.

[0017] Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the bean box assembly.

[0018] Figure 4 yes Figure 2 AA cross-sectional structure schematic diagram.

[0019] Figure 5 yes Figure 2 Schematic diagram of the BB cross-sectional structure.

[0020] Figure 6 yes Figure 1 Schematic diagram of the bottom three-dimensional structure.

[0021] Figure 7 yes Figure 3 The movable door and bean sweeping gear are assembled, and the enlarged structural diagram of the tongue of the movable door.

[0022] Figure 8 yes Figure 7 Schematic diagram of the top view structure.

[0023] Fig. 9 yes Figure 3 Schematic diagram of the enlarged structure of the upper cover of the bean-sweeping cavity.

[0024] Fig.10 yes Figure 3 Schematic diagram of the enlarged bottom structure of the bean silo

[0025] Serial number and name of the accompanying drawings: 1. Bean box assembly, 2. Bean grinding assembly, 3. Bean bin cover, 4. Movable door knob, 5. Bean bin, 501. Positioning cylinder, 502. Tongue groove, 503. Mounting column, 6. Tongue, 7. Movable door, 701. Track, 702. Positioning column, 703. Limit column, 8. Main body bracket, 9. Bean sweeping cavity upper cover, 901. Tongue notch, 902. Lower bean slope, 10. Bean box assembly support plate, 11. Bean sweeping gear, 12. Bean sweeping cavity lower cover, 1201, lower bean hole, 13. Synchronous motor, 14. Weighing module, 15. Weighing module bracket. DETAILED DESCRIPTION

[0026] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 10As shown, the mechanism includes a bean box assembly 1 and a bean grinding assembly 2, a weighing module 14 is provided below the bean bin 5 of the bean box assembly, a bean sweeping gear 11 in the bean bin is driven to rotate by the output shaft of the synchronous motor 13 at the bottom to discharge the beans, the coffee beans in the bean discharge process enter the grinding knife of the bean grinding assembly through the bean discharge channel of the bean grinding assembly to be ground, and the ground coffee beans are discharged through the powder discharge channel of the bean grinding assembly, a movable door 7 coaxially sleeved with the bean sweeping gear is provided on the top of the bean sweeping gear in the bean bin, a bean discharge through hole is provided on the circular surface of the movable door, the bean discharge through hole of the movable door corresponds to the upper bean through hole in the bean bin, the upper end of the movable door is in contact with the bottom of the bean bin and is correspondingly circular, and a bean bin cover 3 is provided at the top of the bean bin. The bean bin bottom edge of the bean box assembly is provided with a main body bracket 8 embedded in the coffee machine body, the circular raised cavity at the bottom of the main body bracket is provided with a bean sweeping cavity upper cover 9 and a bean sweeping cavity lower cover 12, the bean sweeping gear 11 is arranged in the cavity formed by the bean sweeping cavity upper cover and the bean sweeping cavity lower cover, the bean lowering hole 1201 on one side of the bean sweeping cavity lower cover extends out of the opening on one side of the bottom raised portion of the main body bracket and is aligned with the bean lowering channel of the bean grinding assembly; a bean box assembly support plate 10 is provided below the bottom edge of one side of the bean bin, the weighing module 14 is provided at the bottom of the bean box assembly support plate, weighing sensors are provided in the weighing modules, and the weighing modules are fixed to the bean box assembly support plate at the bottom edge of one side of the bean bin through a weighing module bracket 15. A symmetrically arranged bean box assembly is provided above the bean grinding assembly, and a lower bean hole of a lower cover of a bean sweeping cavity of the bean box assembly is arranged on one side relatively to the middle; the top cover of the bean bin of the bean grinding assembly is rectangular, and a transition slope in the top cover of the bean bin faces one side of the lower bean hole, a support plate of the bean box assembly is arranged below an edge of one side of the transition slope in the top cover of the bean bin, and the weighing modules are longitudinally symmetrically arranged in the middle below an edge of one side of the transition slope in the top cover of the bean bin, and the weighing modules on both sides are laterally pressed and fixed to the weighing module bracket; an arc-shaped notch is provided on one side of the square bean box assembly support plate, and the bean box assembly support plate is fitted to the outer diameter of the circular protrusion at the bottom of the main bracket 8 through the arc-shaped notch on one side.

[0027] A positioning cylinder 501 protruding upward is provided in the middle of the upper bean through hole in the above-mentioned bean bin, and tongue grooves 502 are symmetrically provided in the middle of both sides of the bottom of the upper bean through hole of the bean bin, and a positioning cylinder of the bean bin is extended out of the top axis of the movable door in the bean bin and a movable door knob 4 is provided, and tongue notches 901 are symmetrically provided on both sides of the upper cover of the bean sweeping cavity where the top cover opening of the upper cover of the bean sweeping cavity and the bottom bin opening of the bean bin are fitted, and tongue through holes are provided on the upper cover of the bean sweeping cavity and the main body bracket corresponding to the tongue notches; tongues 6 are symmetrically provided on the edge circle ribs of the movable door, and the bottom of the tongue is buckled in the edge circle ribs of the movable door. At the same time, the tongue is set in the tongue groove at the bottom of the bean bin, and one end of the tongue passes through the tongue notch of the upper cover of the bean sweeping cavity and is inserted into the tongue through holes of the upper cover of the bean sweeping cavity and the main body bracket in sequence; a Z-shaped stepped track 701 that shrinks inward and is connected as one body is symmetrically provided on both sides of the edge circle ribs of the movable door, and the Z-shaped stepped tracks of the edge circle ribs on both sides of the movable door are arranged in parallel. A raised positioning column 702 is provided on the edge rib of the track of the movable door, or a raised limiting column 703 is provided on the inner circular surface of the edge rib of the track of the movable door, and the tongue is limited to slide on the track of the edge rib of the movable door through the limiting column and / or the positioning column of the movable door. The outer side of the tongue protrudes from one end of the edge rib and is convex in a rectangular shape, and a convex rib is provided in the middle of the top. The rectangular protrusion of the tongue corresponds to the tongue through hole of the main frame and is a rectangular hole, and the convex rib of the tongue corresponds to the tongue through hole of the bean bin and is a T-shaped hole.

[0028] The outer diameter of the bottom bin opening of the bean bin is provided with mounting columns 503 arranged symmetrically in pairs, and the mounting columns of the bean bin are positioned and inserted into the column grooves arranged symmetrically in pairs and opened in the main frame. The outer diameter of the upper cover of the bean sweeping cavity is provided with upper screw mounting ears arranged symmetrically in pairs, and the corresponding outer diameter of the lower cover of the bean sweeping cavity is provided with lower screw mounting ears arranged symmetrically in pairs. 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 frame by screws. A fan-shaped surface with a quarter of a circle is provided on one side of the inner diameter of the top cover of the bean sweeping cavity, and a lower bean inclined surface is provided on one side of the fan-shaped surface. One end of the output shaft extending from the synchronous motor is eccentrically arranged on one side, and the gear at the other end of the output shaft in the synchronous motor is connected to the gear at the motor shaft through a reduction gear, and the housing of the synchronous motor is fixedly arranged at the protrusion at the bottom of the main frame. The lower bean hole of the lower cover of the bean sweeping cavity is set to open at 90 degrees; the blades of the bean sweeping gear are set to be helical gear blades.

[0029] In summary, the mechanism is mainly composed of two parts: a bean box assembly and a bean grinding assembly. The bean bin of the bean box assembly is provided with a bean box cover and a positioning cylinder protruding upwards. 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. At the same time, the bean box knob is inserted above the shaft of the movable door extending from the positioning cylinder in the bean bin. Two tongue grooves are provided at the bottom of the bean bin, and the two tongues are installed therein. Two convex (T-shaped) openings are provided on the bottom outer wall of the bean bin. A rectangular opening is provided on the outer wall of the main support, and the tongues move in and out of this front and back. Two arc tracks are provided on the movable door. The tracks are arc-shaped from thick to thin, and a closed end face is provided at the end of the thick end. The upper end of the movable door fits with the bottom of the bean bin. A bean sweeping gear is provided below the movable door. The cylindrical tube at the upper end of the bean sweeping gear is inserted into the bottom of the movable door. Four screw columns are provided on the bean bin, which are inserted into the four positioning holes of the upper cover of the bean sweeping cavity below and fixed with screws. The bottom of the bean sweeping cavity is provided with a bean sweeping cavity bottom cover, and the bean sweeping cavity bottom cover is provided with four Positioning hole, the bottom of the bean-sweeping cavity upper cover is provided with a screw column corresponding to the bean-sweeping cavity bottom cover to cooperate with it, the bottom of the bean-sweeping cavity bottom cover is provided with two screw holes to cooperate with the synchronous motor at the bottom, the rotating column on the synchronous motor at the bottom is inserted into the cylindrical tube at the bottom of the bean-sweeping gear, and four screw columns are provided in the slot below the main body bracket, and are distributed in an arc shape, and a square bean box assembly support plate with an arc-shaped notch is provided below, and the screw holes on the left and right sides correspond to each other, and two circular screw holes are provided in the middle of the bean box assembly support plate to correspond to the screw holes on the heavy module below, and the two screw holes behind the weighing module correspond to the screw holes on the weighing module bracket below.

[0030] When using, first, put enough coffee beans in the bean bin, and the weighing module will display the weight of the coffee beans in the bean bin. Then, twist the movable door knob 90° clockwise. The movable door knob is connected to the movable door, so the movable door also rotates 90° clockwise. Open the movable door and the coffee beans enter the cavity. During this process, the two tongues shrink inward due to the influence of the track, locking the bean bin and preventing it from moving freely. Next, select the required grams of coffee beans according to your needs, such as 39g of coffee beans. Then, the synchronous motor rotates clockwise under the control of the program, and drives the bean sweeping gear (the blades of the bean sweeping gear are designed with a bean sweeping surface to prevent beans from getting stuck) to rotate clockwise, sweeping the coffee beans in the cavity out of the gap, and the swept coffee beans enter the powder sweeping cavity of the bean grinding assembly while the beans are put in and ground. Finally, when taking away the bean bin, the coffee beans are stuck in the limit position of the bean sweeping gear in the cavity during the bean dropping process to prevent the beans from being scattered when taking the bean bin.

Claims

1. A coffee machine bean feeding weighing and grinding mechanism, the mechanism comprising a bean box assembly (1) and a bean grinding assembly (2), a weighing module (14) being arranged below a bean bin (5) of the bean box assembly, a bean sweeping gear (11) in the bean bin being driven to rotate by an output shaft of a synchronous motor (13) at the bottom to feed beans, the coffee beans in the bean feeding process entering the grinding knife of the bean grinding assembly through a bean feeding channel of the bean grinding assembly to be ground, and the ground coffee beans are discharged through a powder outlet channel of the bean grinding assembly, a movable door (7) being coaxially sleeved with the bean sweeping gear being arranged at the top of the bean sweeping gear in the bean bin, a bean feeding through hole being arranged on a circular surface of the movable door, the bean feeding through hole of the movable door corresponding to the bean feeding through hole in the bean bin, and the upper end of the movable door being in contact with the bottom of the bean bin and correspondingly forming a circle; characterized in that The bean bin (5) of the bean box assembly (1) is provided with a main body bracket (8) embedded in the coffee machine body at the bottom edge thereof, and a bean sweeping cavity upper cover (9) and a bean sweeping cavity lower cover (12) are provided in the circular raised cavity at the bottom of the main body bracket. The bean sweeping gear (11) is arranged in the cavity formed by the bean sweeping cavity upper cover and the bean sweeping cavity lower cover. The bean discharge hole (1201) at one side of the bean sweeping cavity lower cover extends out of the opening at one side of the raised bottom of the main body bracket and is aligned with the bean discharge channel of the bean grinding assembly (2). A bean box assembly support plate (10) is provided below the bottom edge of one side of the bean bin, and the bean box assembly support plate is provided at the bottom of the bean box assembly support plate. The weighing modules (14) are provided in the weighing modules, and weighing sensors are respectively provided in the weighing modules. The weighing modules are fixed to the bean box assembly support plate at the bottom edge of one side of the bean bin via a weighing module bracket (15).

2. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1, characterized in that The bean box assembly (1) is symmetrically arranged above the bean grinding assembly (2); the lower bean hole (1201) of the lower cover (12) of the bean sweeping cavity of the bean box assembly is arranged on one side relative to the middle; the top cover of the bean bin (5) of the bean grinding assembly is rectangular, the transition slope in the top cover of the bean bin faces the lower bean hole; the bean box assembly support plate (10) is arranged below the edge of the transition slope on one side of the top cover of the bean bin; the weighing modules (14) are longitudinally symmetrically arranged in the middle below the edge of the transition slope on one side of the top cover of the bean bin; the weighing modules on both sides are laterally pressed and fixed to the weighing module bracket (15); and arc-shaped notches are respectively arranged on one side of the square bean box assembly support plate, and the bean box assembly support plate is respectively fitted to the outer diameter of the circular protrusion at the bottom of the main bracket (8) through the arc-shaped notch on one side.

3. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1 or 2, characterized in that A positioning cylinder (501) protruding upward is provided in the middle of the upper bean through hole in the bean bin (5), tongue grooves (502) are symmetrically provided in the middle of both sides of the bottom of the upper bean through hole in the bean bin, a positioning cylinder of the bean bin protrudes from the top axis of the movable door (7) in the bean bin and a movable door knob (4) is provided, and tongue notches (901) are symmetrically provided on both sides of the upper bean bin cover where the top cover opening of the bean bin cover (9) and the bottom bin opening of the bean bin fit together, and the upper bean bin cover and the main body bracket (8) corresponding to the tongue notches are provided. A tongue through hole is provided; the edge ring ribs of the movable door are symmetrically provided with tongues (6); the bottom of the tongue is buckled with the edge ring ribs of the movable door, and the tongue is arranged in a tongue groove at the bottom of the bean bin; one end of the tongue passes through the tongue notch of the upper cover of the bean sweeping cavity and is inserted into the tongue through holes of the upper cover of the bean sweeping cavity and the main frame in sequence; a Z-shaped stepped track (701) that is reduced inward and connected as one body is symmetrically provided on both sides of the edge ring ribs of the movable door, and the Z-shaped stepped tracks of the edge ring ribs on both sides of the movable door are arranged in parallel.

4. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 3, characterized in that The edge rib of the track (701) of the movable door (7) is provided with a protruding positioning column (702), or the inner circular surface of the edge rib of the track of the movable door is provided with a protruding limiting column (703), and the tongue (6) is limited by the limiting column and / or positioning column of the movable door to slide on the track of the edge rib of the movable door.

5. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 3, characterized in that The outer side of the protruding tongue (6) extends outward along the edge of the ring rib and is convex at one end in a rectangular shape, and a convex rib is provided in the middle of the top. The rectangular protrusion of the protruding tongue corresponds to the protruding tongue through hole of the main frame (8) in the form of a rectangular hole, and the convex rib of the protruding tongue corresponds to the protruding tongue through hole of the bean bin in the form of a T-shaped hole.

6. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1, characterized in that The outer diameter of the bottom bin opening of the bean bin (5) is provided with mounting columns (503) arranged symmetrically in pairs, and the mounting columns of the bean bin are positioned and inserted into column grooves arranged symmetrically in pairs and opened in the main frame (8). The outer diameter of the upper cover (9) of the bean sweeping cavity is provided with upper screw mounting ears arranged symmetrically in pairs, and the corresponding outer diameter of the lower cover (12) of the bean sweeping cavity is provided with lower screw mounting ears arranged symmetrically in pairs. 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 frame by screws.

7. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1, characterized in that A quarter-circular sector-shaped surface is provided on one side of the inner diameter of the top cover opening of the bean-sweeping cavity upper cover (9), and a bean lowering inclined surface (902) is provided on one side of the sector-shaped surface.

8. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1, characterized in that One end of the output shaft extending from the synchronous motor (13) is eccentrically arranged at one side, a gear at the other end of the output shaft in the synchronous motor is connected to a gear at the motor shaft via a reduction gear, and a housing of the synchronous motor is fixedly arranged at a protrusion at the bottom of the main support (8).

9. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1, characterized in that The lower bean hole (1201) of the lower cover (12) of the bean-sweeping cavity is arranged to be opened at 90 degrees.

10. The coffee bean weighing and grinding mechanism of the coffee machine according to claim 1, characterized in that The blades of the bean sweeping gear (11) are arranged in the form of helical gear blades.

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