Bean grinding assembly and method of testing thereof, bean grinder and method of assembling thereof

Abstract

The application relates to a bean grinding assembly and a testing method thereof, a bean grinder and an assembling method thereof, and belongs to the technical field of bean grinders.The bean grinding assembly comprises a modular support, a driving motor fixedly installed on the modular support, a grinding mechanism installed on the modular support and in transmission connection with an output end of the driving motor, the grinding mechanism comprising a stator grinding disc and a rotor grinding disc, the grinding mechanism being provided with an inlet and a powder outlet, and an adjusting mechanism for adjusting a grinding gap between the stator grinding disc and the rotor grinding disc; the modular support is provided with a testing interface and an installation positioning part, so that the bean grinding assembly can be assembled on a testing tool independently of a complete machine, and power supply and control signals can be connected through the testing interface, so that the grinding state of the grinding mechanism can be independently adjusted and tested.The application discloses a bean grinding assembly and a testing method thereof, a bean grinder and an assembling method thereof, and can solve the problems of low production and testing efficiency, high maintenance cost and poor user experience of current bean grinders.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bean grinder, in particular to a bean grinding assembly, a testing method thereof, a bean grinder and an assembling method thereof. BACKGROUND

[0002] As a device for grinding coffee beans, spices and the like, the core of the bean grinder lies in the precision and performance of the grinding assembly. The improvements of the prior art on the bean grinder are mostly focused on improving the user experience of the end user or the performance of a single component, but there are still significant defects in the production and after-sales maintenance links.

[0003] Firstly, in the production and manufacturing end, the traditional production method of the bean grinder is to assemble hundreds of parts such as motors, bean grinding cavities, cutter plates and the like into the main machine shell one by one online, and finally assemble a complete machine. After assembly, the machine can be powered on for cutter adjustment test and grinding performance test. This kind of machine test mode has great disadvantages: if abnormal phenomena such as uneven grinding, abnormal noise or motor failure are found during the test, the maintenance personnel must completely disassemble the machine, troubleshoot the fault source from the dense parts, replace the abnormal parts, and then reassemble the machine for test. This process is time-consuming and labor-intensive, with low production efficiency, high cost of repairing defective products, which seriously restricts the improvement of production yield and capacity, and ultimately increases the manufacturing cost of the product. SUMMARY

[0004] In order to overcome the defects of the prior art, the present application provides a bean grinding assembly, a testing method thereof, a bean grinder and an assembling method thereof, which can solve the problems of low production and test efficiency, high maintenance cost and poor user experience of the current bean grinder.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] The bean grinding assembly provided by the present application comprises a modular support, a driving motor fixedly installed on the modular support, a grinding mechanism installed on the modular support and in transmission connection with the output end of the driving motor, which comprises a stator grinding disc and a rotor grinding disc, the grinding mechanism is provided with an inlet and a powder outlet, an adjusting mechanism for adjusting the grinding gap between the stator grinding disc and the rotor grinding disc, and a test interface and an installation positioning part are arranged on the modular support, so that the bean grinding assembly can be assembled on the test tool independently of the machine, and the power supply and control signals can be connected through the test interface to independently adjust the cutter and test the grinding state of the grinding mechanism.

[0007] The preferred technical solution of the present application is that the adjusting mechanism comprises an adjusting disc rotatably installed on the grinding mechanism, and rotating the adjusting disc drives the stator grinding disc or the rotor grinding disc to move axially to change the grinding gap.

[0008] The preferred technical scheme of the present application is characterized in that the modular support is internally provided with a lower cutter disc assembly and an upper cutter disc assembly matched with the lower cutter disc assembly, the adjusting disc and the upper cutter disc assembly are threadedly connected, and rotation of the adjusting disc can drive the upper cutter disc assembly to axially move, so as to adjust the distance between the stator grinding disc mounted on the upper cutter disc assembly and the rotor grinding disc mounted on the lower cutter disc assembly; the upper cutter disc assembly and the lower cutter disc assembly are sequentially mounted in the modular support in a top-to-bottom manner; the modular support is centrally and symmetrically provided with a plurality of mounting protruding columns; a plurality of breaking structures are arranged on the threaded structure of the upper cutter disc assembly at the threadedly connected position; the threaded structure of the adjusting disc is provided with grooves corresponding to the positions of the mounting protruding columns; and the mounting protruding columns are provided with threaded holes for connecting with the main machine shell.

[0009] The preferred technical scheme of the present application is characterized in that the modular support is centrally and symmetrically provided with a plurality of mounting protruding columns; a plurality of breaking structures are arranged on the threaded structure of the upper cutter disc assembly at the threadedly connected position; the threaded structure of the adjusting disc is provided with grooves corresponding to the positions of the mounting protruding columns; and the mounting protruding columns are provided with threaded holes for connecting with the main machine shell.

[0010] The present application provides a kind of grinder, including the grinding assembly in the above technical scheme, main machine shell, its inside is provided with the bearing structure matched with the installation positioning part of grinding assembly.

[0011] The present application provides a kind of grinder, installation positioning part is symmetrically distributed half round clamping groove, bearing structure is and half round clamping groove matching screw column, grinding assembly is connected with main machine shell by half round clamping groove.

[0012] The preferred technical scheme of the present application is characterized in that the modular support is centrally and symmetrically provided with a plurality of mounting protruding columns; a plurality of breaking structures are arranged on the threaded structure of the upper cutter disc assembly at the threadedly connected position; the threaded structure of the adjusting disc is provided with grooves corresponding to the positions of the mounting protruding columns; and the mounting protruding columns are provided with threaded holes for connecting with the main machine shell.

[0013] The preferred technical scheme of the present application is characterized in that the modular support is centrally and symmetrically provided with a plurality of mounting protruding columns; a plurality of breaking structures are arranged on the threaded structure of the upper cutter disc assembly at the threadedly connected position; the threaded structure of the adjusting disc is provided with grooves corresponding to the positions of the mounting protruding columns; and the mounting protruding columns are provided with threaded holes for connecting with the main machine shell.

[0014] The present application provides an assembly method of a grinder, including the following steps:

[0015] S1: connect the circuit structure of grinding assembly and main machine shell;

[0016] S2: grinding assembly is regarded as a complete module, and is integrally assembled into the bearing structure of main machine shell through installation positioning part.

[0017] The application provides a testing method of a bean grinding assembly, comprising the following steps:

[0018] P1: fixing the bean grinding assembly through the mounting positioning part thereof on a testing tool;

[0019] P2: supplying power to the driving motor and receiving signals of the driving motor through the testing interface;

[0020] P3: running the bean grinding assembly and detecting the fineness uniformity of the ground coffee powder in real time on the testing tool;

[0021] P4: according to the detection result, adjusting the adjusting disc to calibrate the grinding gap;

[0022] P5: after the test is passed, taking the bean grinding assembly off the testing tool and using it as a qualified module for assembly of the whole machine.

[0023] The application has the following beneficial effects:

[0024] The application provides a bean grinding assembly, a testing method thereof, a bean grinder and an assembly method thereof. Through the integrated modular design, the current application problems in the field of the bean grinder are systematically solved. The modular support is used as a core carrier, the driving motor, the grinding mechanism and the adjusting mechanism are integrated into a complete structural unit in advance, the whole bean grinding assembly can be integrally assembled and debugged as an independent module before final assembly, the module can be quickly fixed on a special testing tool for testing, so that the grinding gap calibration, motor performance and powder uniformity detection can be independently completed on the production line, the production and testing efficiency is greatly improved. In addition, the modular design can use the pre-adjusted and tested bean grinding assembly as a "black box" module, which is produced in parallel with the main shell, and finally assembled on the final assembly line, which greatly simplifies the complexity of the final product assembly. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0026] Figure 1 It is a perspective view of a bean grinding assembly of the first embodiment of the application;

[0027] Figure 2 It is an exploded view of a bean grinding assembly of the first embodiment of the application;

[0028] Figure 3 It is a front view of a bean grinder of the second embodiment of the application;

[0029] Figure 4 A partial assembly view of a bean grinder according to an embodiment of the present application;

[0030] Figure 5 A perspective view of a bean bin feeding structure according to an embodiment of the present application;

[0031] Figure 6 An exploded view of a bean bin feeding structure according to an embodiment of the present application;

[0032] Figure 7 A top view of a bean bin feeding structure according to an embodiment of the present application in an open feeding port state;

[0033] Figure 8 A top view of a bean bin feeding structure according to an embodiment of the present application in a closed feeding port state;

[0034] Figure 9 A combined perspective view of a shutter assembly and a shutter fixing frame according to an embodiment of the present application;

[0035] Figure 10 A perspective view of a bean bin body according to an embodiment of the present application;

[0036] Figure 11 A perspective view of a shutter assembly according to an embodiment of the present application;

[0037] Figure 12 A perspective view of a bean bin fixing portion according to an embodiment of the present application;

[0038] Figure 13 A perspective view of a shutter fixing frame according to an embodiment of the present application;

[0039] Figure 14 A perspective view of a fastener according to an embodiment of the present application;

[0040] Figure 15 An exploded view of a partial structure of a bean grinder according to an embodiment of the present application;

[0041] Figure 16 A perspective view of a powder outlet tube fixing frame according to an embodiment of the present application.

[0042] In the drawings:

[0043] 1-Modular support; 11-Test interface; 12-Installation positioning part; 13-Installation convex column; 2-Drive motor; 3-Grinding mechanism; 31-Stator grinding disc; 32-Rotor grinding disc; 33-Blanking port; 34-Powder outlet; 35-Lower cutter disc assembly; 36-Upper cutter disc assembly; 361-Groove; 4-Adjusting mechanism; 41-Adjusting disc; 5-Needle bearing; 6-Host shell; 61-Bearing structure; 71-Bean bin body; 711-Feeding port; 712-Shelter part; 713-Connecting hole; 72-Flap assembly; 721-Connecting column; 722-Flap; 731-Bean bin fixing part; 741-Flap fixing frame; 7411-Bean bin buckle position; 742-Host buckle position; 7421-First host buckle position; 7422-Second host buckle position; 7423-Screw-in area; 7424-Error-proof structure; 75-Fastener; 81-Powder outlet pipe fixing frame; 811-Positioning protrusion; 812-Elastic strip; 82-Powder outlet pipe; 821-Positioning hole. DETAILED DESCRIPTION

[0044] The technical solutions of the present application will be further illustrated below in combination with the drawings and through specific embodiments.

[0045] Example One

[0046] A bean grinding assembly provided in this embodiment, such as Figures 2-3As shown, the bean grinding assembly includes a modular support 1, a drive motor 2 (located inside the modular support 1) and a grinding mechanism 3, the drive motor 2 is fixedly installed on the modular support 1, the grinding mechanism 3 is installed on the modular support 1 and in transmission connection with the output end of the drive motor 2, the grinding mechanism 3 includes a stator grinding disc 31 and a rotor grinding disc 32, and is provided with a feeding port 33 for coffee beans to enter and a powder outlet 34 for ground powder to flow out, and further includes an adjusting mechanism 4 for adjusting the grinding gap between the stator grinding disc 31 and the rotor grinding disc 32, the modular support 1 is provided with a test interface 11 and a mounting positioning part 12, so that the bean grinding assembly can be assembled on a test tool independently of the whole machine, and the power supply and control signals are connected through the test interface 11, so as to independently adjust and test the grinding state of the grinding mechanism 3. The technical scheme of the embodiment systematically solves the three major pain points in the field of bean grinders through integrated modular design: first, the modular support 1 as the core carrier pre-integrates the drive motor 2, the grinding mechanism 3 and the adjusting mechanism 4 into a complete structural unit, so that the whole bean grinding assembly can be assembled and debugged as an independent module before final assembly, completely changing the inefficient process that the traditional production line must be tested after the whole machine is assembled - through the standardized mounting positioning part 12 provided on the support, the module can be quickly fixed on the special test tool, and its integrated test interface 11 can directly connect the power supply and control signals, so that the drive motor 2 drives the rotor grinding disc 32 and the stator grinding disc 31 to form the grinding mechanism 3 to work, thereby independently completing the grinding gap calibration, motor performance and powder uniformity detection on the production line, greatly improving the production test efficiency and reducing the risk of defective products flowing into the subsequent links; secondly, the modular design itself reduces the maintenance cost, because any component failure can be quickly solved by replacing the whole pre-checking module, avoiding the manpower and time consumption of disassembling the whole machine, and the independent setting of the adjusting mechanism 4 (such as a threaded adjusting disc) enables the calibration accuracy of the grinding gap to reach the micron level, ensuring the stability of the performance in long-term use; finally, in terms of user experience, the quick release feature of the module also facilitates user cleaning and maintenance, improving the reliability and ease of use of the product.

[0047] Specifically, the adjusting mechanism 4 comprises an adjusting disc 41 rotatably mounted on the grinding mechanism 3, and rotating the adjusting disc 41 drives the stator grinding disc 31 or the rotor grinding disc 32 to move axially to change the grinding gap. The modular support 1 is provided with the lower cutter disc assembly 35 and the upper cutter disc assembly 36 matched with the lower cutter disc assembly 35, the adjusting disc 41 is threadedly connected with the upper cutter disc assembly 36, and rotating the adjusting disc 41 can drive the upper cutter disc assembly 36 to move axially, so as to adjust the distance between the stator grinding disc 31 mounted on the upper cutter disc assembly 36 and the rotor grinding disc 32 mounted on the lower cutter disc assembly 35. The upper cutter disc assembly 36 and the lower cutter disc assembly 35 are sequentially mounted in the modular support 1 in a top-to-bottom manner, the modular support 1 is centrally and symmetrically provided with a plurality of mounting protrusions 13, the thread structure of the upper cutter disc assembly 36 is provided with a plurality of broken structures at the threadedly connected position, the positions and sizes of the broken structures and the mounting protrusions 13 are matched, and the mounting protrusions 13 are provided with threaded holes for connecting with the main machine shell 6. Specifically, the broken structure in the embodiment is a groove 361, and the positions and sizes of the groove 361 and the mounting protrusions 13 are matched. This scheme has obvious advantages in modular assembly because it is based on the organic cooperation of the adjusting disc 41, the upper cutter disc assembly 36 / the lower cutter disc assembly 35 and the modular support 1, and is significantly superior to the conventional fixed structure in terms of convenience in installation and disassembly. Here, the "adjusting disc 41" refers to a rotatable annular driving member that, when rotated, drives the upper cutter disc assembly 36 to move axially to change the "grinding gap" (i.e., the working distance between the stator grinding disc 31 and the rotor grinding disc 32); the "upper cutter disc assembly 36 / the lower cutter disc assembly 35" are respectively used as bearing and positioning units of the grinding disc, and are sequentially mounted in the modular support 1 in an axial order, and the "mounting protrusions 13" centrally and symmetrically distributed in the support are used as reference pieces for accurate positioning and quick assembly and disassembly. The core of the above scheme is also to make the adjusting and positioning mechanism into a mechanical structure that can be repeatedly self-positioned, so as to achieve the goal of "easy assembly and disassembly without changing the range stop". When the user or production line disassembles the upper cutter disc assembly 36, the angle scale of the adjusting disc 41 and the clamping position remain in a relative relationship, and the scale lock position is still retained after the upper cutter disc assembly 36 is taken out; after cleaning, the upper cutter disc assembly 36 can be automatically returned to the original stop position by positioning and resetting the groove 361, without the need to "adjust the cutter" again. In order to facilitate production and user operation, the adjusting disc 41 can be made into a hand wheel or a one-key type toggle arm, the thread can adopt a trapezoidal or differential screw to balance coarse adjustment and fine adjustment, and the cooperating scale and encoder feedback can realize a repeatable set value. For production testing, the mounting protrusions 13 and the threaded holes thereof on the modular support 1 can be directly connected with the test tooling, the entire grinding disc assembly is detected as a whole instead of the whole machine, the whole machine disassembly process is reduced, and the maintenance and replacement time is significantly shortened.Furthermore, the structure can significantly shorten the disassembly and debugging time at the production end, facilitate quick replacement of the module on the test tool, reduce rework, realize tool-free quick disassembly and cleaning at the user end, maintain the existing grinding setting, avoid waste of coffee beans due to secondary debugging, finally reduce the maintenance cost and greatly improve the user experience.

[0048] Preferably, a needle bearing 5 is further included and arranged between the adjusting disc 41 and the modular support 1 to prevent the adjusting disc 41 from being stuck or loose due to excessive friction when adjusting the grinding fineness, resulting in inconsistent or uneven hand feeling. The "needle bearing 5" refers to a rolling bearing with small cross-section and high load capacity, which is suitable for working in space-limited axial / radial mixed stress field. Specifically, a full-load needle bearing 5 with a sealing retainer or a needle bearing 5 with a retainer can be used. The outer ring directly fits the bearing seat of the modular support 1, the inner ring or rotating fitting surface is arranged at the shaft sleeve of the adjusting disc 41, and the inner ring is positioned by a circlip and a washer. If necessary, a small thrust washer or wave spring is used for pre-tightening at the axial end to eliminate play. The needle bearing 5 converts the torque originally transmitted by sliding friction into rolling friction, greatly reducing the friction coefficient, thereby ensuring smooth hand feeling and constant torque of the adjusting disc 41 during fine adjustment, avoiding the "stick-sudden jump" phenomenon that causes the adjusting disc 41 to be stuck or the hand feeling to suddenly change. At the same time, the rolling element has strong load capacity and small friction heat, reducing wear and extending maintenance interval. In combination with the sealing structure, the needle bearing 5 can effectively prevent coffee dust from entering the bearing cavity and improve durability. For modular assembly, low and stable rotational resistance facilitates quick screwing in / out of the upper cutter disc assembly 36 without changing the original scale position due to changes in friction, ensuring that the disassembled and cleaned module returns to the existing fineness position after repositioning, reducing waste of coffee beans caused by repeated adjustment of the cutter.

[0049] The test method for the bean grinding assembly provided in the embodiment includes the following steps:

[0050] P1: The bean grinding assembly is fixed to the test tool through the mounting and positioning part 12 thereof;

[0051] P2: The driving motor 2 is powered and its signals are received through the test interface 11;

[0052] P3: The bean grinding assembly is operated, and the uniformity of the fineness of the ground coffee powder is detected in real time on the test tool;

[0053] P4: According to the detection result, the grinding gap is calibrated by adjusting the adjusting disc 41;

[0054] P5: After the test is passed, the bean grinding assembly is removed from the test tool and used as a qualified module for assembly of the whole machine.

[0055] The test method creatively moves the quality control and performance calibration link from the traditional whole machine terminal detection to the module assembly level, through a set of standardized and repeatable offline test process, completely solves the industry pain points of low test efficiency, difficult calibration and high repair cost in the production process of the bean grinder. The core of this scheme depends on two self-defined key interfaces: "installation positioning part 12" and "test interface 11". The "installation positioning part 12" is a standardized mechanical interface (such as a precision positioning pin hole or a clamping groove) designed on the modular support 1, which ensures that the bean grinding assembly can be quickly, accurately and repeatedly fixed to the special "test tooling" (an external test platform customized for receiving the module), thereby providing a stable reference for subsequent testing. The "test interface 11" is a composite electrical interface that integrates power lines and data lines. Its implementation means is: after the module is fixed on the test tooling, the operator can instantly complete the power supply to the "drive motor 2" and establish a bidirectional signal transmission channel by connecting the interface with the corresponding port on the test tooling.

[0056] The test tooling is in soft contact with the motor, and a soft rubber is added in the middle, so that whether there is vibration or excessive bad motor during operation of the motor can be detected in the bean grinding test. Therefore, the bad motor product is detected in advance, and the good product rate of the whole machine is improved.

[0057] The technical effect of this scheme on production efficiency is significant. First, in terms of production efficiency, it realizes parallel testing and calibration. A single test tooling can test multiple modules in circulation without waiting for the assembly of the whole machine, greatly shortening the production cycle. In step P3, the laser particle size analyzer or high-speed camera system carried by the test tooling can detect the "coarseness uniformity" of the powder in real time and immediately visualize the data; in step P4, the engineer can adjust the "adjusting disc 41" to accurately calibrate the "grinding gap" according to the data, ensuring the performance consistency of each module leaving the factory, and changing the quality control from subjective judgment to objective data-driven. Secondly, in terms of cost control, this method isolates faults at the module level. Any abnormality (such as motor abnormal noise, grinding out-of-tolerance) can be discovered and solved in steps P2-P4 in time, avoiding the disassembly and repeated testing of the whole machine after the abnormal module flows into the assembly line, greatly saving the rework time and material loss.

[0058] Embodiment Two

[0059] A bean grinder provided in this embodiment, such as Figures 1-2As shown, the grinding assembly in Example One is also included in the main housing 6, which is internally provided with a bearing structure 61 matched with the mounting and positioning part 12 of the grinding assembly. The grinder in this embodiment combines the aforementioned modular grinding assembly with a specially designed main housing 6 to form a complete grinder product. This scheme realizes the assembly of the "modular" design product through the cooperation of the "bearing structure 61" inside the main housing 6 and the "mounting and positioning part 12" on the grinding assembly. First, in terms of production efficiency, it significantly improves the overall assembly process. The factory can produce the pre-adjusted and tested grinding assembly as a "black box" module in parallel with the main housing 6, and finally realize assembly on the assembly line, greatly simplifying the complexity of the final assembly, shortening the production line rhythm, and reducing the overall production cost. Second, when the machine needs to be repaired or deeply cleaned, maintenance personnel can quickly remove the entire functional module from the main machine or directly replace the spare module, so that the user's machine quickly recovers work, and the faulty module is returned to the factory for repair. This completely avoids the complex, time-consuming and error-prone disassembly of the entire machine in traditional maintenance, and changes the maintenance from a professional technical work to a simple module replacement operation, greatly reducing the threshold, time cost and labor cost of after-sales service. Finally, in terms of user experience, this seamless integration ensures the appearance neatness and use reliability of the product. The user is no longer faced with a messy wire and complex structure, but a whole device that is easy to understand and simple to operate. At the same time, the high reliability and easy maintenance brought by modularization also indirectly improves the user's trust and satisfaction for the product quality. Therefore, the scheme of realizing rapid integration through "bearing structure 61" and "mounting and positioning part 12" is the core optimization of making the modular grinding assembly play its great commercial value.

[0060] Preferably, the mounting and positioning part 12 is a symmetrically distributed semicircular clamping groove, and the bearing structure 61 is a screw column matched with the semicircular clamping groove, and the grinding assembly is connected with the main housing 6 through the semicircular clamping groove. This structure balances the positioning, disassembly convenience and repeated positioning accuracy. In this embodiment, the mounting and positioning part 12 refers to the semicircular slot in the main housing 6 for receiving the end of the modular support 1; the semicircular clamping groove is a guide hole with a semicircular opening shape, which is used to realize rapid insertion and self-centering; the bearing structure 61 is a screw column matched with the clamping groove, and the top end can have a step or a circular arc guide surface to guide insertion and be fixed by threads or quick lock. In terms of implementation, the user or assembly line only needs to insert the grinding assembly along the radial direction into the semicircular clamping groove, so that the guide step of the bearing structure 61 enters the clamping groove and completes the preliminary self-alignment, and then the screw column is tightened or the one-handed quick lock piece is used to complete the fastening; the clamping groove and the column surface cooperation adopt interference fit or elastic washer to ensure that there is no shaking after assembly and the positioning angle is highly repeated.

[0061] Preferably, a bean bin, a shutter 722 between the bean bin and the discharge port 33, and a linkage mechanism are further included. When the bean bin is rotated in a first direction and mounted on the modular support 1 / main machine housing 6, the linkage mechanism is triggered to open the shutter 722. When the bean bin is rotated in a second direction opposite to the first direction, the linkage mechanism is triggered to close the shutter 722, and then the bean bin can be removed from the modular support 1 / main machine housing 6. It ingeniously takes advantage of the inevitable action of the user installing and removing the bean bin to automatically open and close the shutter 722 through a purely mechanical structure, fundamentally solving the pain point of coffee beans spilling due to the user forgetting to manually close the shutter 722, and integrating intelligent experience into intuitive operation. The "linkage mechanism" in this scheme refers to a mechanical transmission structure that converts the rotational motion of the bean bin into the linear opening and closing motion of the shutter 722. When the user rotates the installed bean bin in a first direction (e.g., clockwise), the bean bin pulls the shutter 722 to slide open. When the user rotates the bean bin in a second direction (counterclockwise) to remove it, the shutter 722 is pushed back, and then the bean bin can be lifted and separated. The technical effects brought by this scheme are extremely significant: First, single-action installation can be achieved on the assembly line - the operator or robot inserts and rotates the bean bin to the detent to complete self-alignment with the modular support 1, greatly shortening the replacement and test preparation time. Second, on-site maintenance and user cleaning are extremely convenient. The user only needs to rotate and lift the bean bin according to the instructions to take away the entire hopper for water washing or wiping. The shutter 722 remains closed during the cleaning process to avoid bean dust scattering, reducing cleaning difficulty. Finally, it achieves complete "foolproof design" and automation, and the user does not need to remember or perform additional shutter 722 opening and closing actions, completely avoiding the problem of coffee beans spilling due to negligence, saving cleaning costs, and improving the smoothness of the use experience. This linkage mechanism can be achieved purely mechanically without the need for sensors, motors, or circuit control. The structure is reliable and durable, low in cost, and free of the risk of electronic component failure, with a long life cycle. Finally, this "rotation-opening and closing" linkage mechanism gives the product a sense of precision and intuition, greatly improving the user experience and market competitiveness of the product.

[0062] Specifically, the bean bin feeding structure in the embodiment is composed of: a bean bin body 71 having a feeding port 711; a shutter assembly 72 movably arranged on the bean bin body 71 and used for opening or closing the feeding port 711; a main machine shell 6, on which a bean bin fixing portion 731 is arranged; and a linkage mechanism, which includes a shutter fixing frame 741 arranged on the shutter assembly 72 and a main machine buckle 742 arranged on the bean bin fixing portion 731. The shutter fixing frame 741 is fixedly connected to the bottom of the bean bin body 71, and the bean bin body 71 is detachably installed on the bean bin fixing portion 731 through a rotating movement. When the bean bin body 71 is screwed into the bean bin fixing portion 731 to a working position, the main machine buckle 742 blocks the shutter assembly 72 from rotating with the shutter fixing frame 741 to fix the position of the shutter assembly 72 relative to the main machine shell 6, and at the same time, the bean bin body 71 rotates relative to the shutter assembly 72 to open the feeding port 711. When the bean bin body 71 is reversely rotated to a removal position, the main machine buckle 742 continues to constrain the shutter fixing frame 741 from reversely rotating relative to the shutter assembly 72 to close the feeding port 711, and at this time, the bean bin body 71 can be removed. The technical solution of the embodiment rigidly couples the “opening / closing” action of the bean bin with the mounting and dismounting action of the bean bin through mechanical linkage, thereby completely avoiding the problem that coffee beans are spilled from the feeding port 711 due to the user forgetting to close the shutter 722 when the bean bin is removed. Specifically, the bean bin body 71 is provided with the feeding port 711 and the movable shutter assembly 72, the shutter assembly 72 is connected to the linkage mechanism through the shutter fixing frame 741, the main machine is provided with the bean bin fixing portion 731, the fixing portion is provided with the main machine buckle 742 as a linkage hinge, and the bean bin body 71 is installed on the bean bin fixing portion 731 in a detachable screw-in-screw-out manner. When the bean bin is screwed into the working position (i.e., locked), the main machine buckle 742 constrains the shutter fixing frame 741 to fix the position of the shutter assembly 72 relative to the main machine, and the bean bin body 71 continues to rotate relatively, which opens the shutter 722 or rotates to a position where the feeding port 711 is opened, and the feeding of the bean bin is completed. When the user reversely rotates the bean bin to a removal position, the main machine buckle 742 continues to constrain the shutter fixing frame 741 to cause the shutter assembly 72 to reversely rotate relatively, so that the feeding port 711 automatically returns to the closed position (the position blocked by the shutter 722 of the shutter assembly 72) before the bean bin is separated from the main machine, and then the bean bin body 71 can be safely removed.

[0063] Specifically, the feeding port 711 is provided with a shielding portion 712, the shutter fixing frame 741 and the bottom of the bean bin body 71 are fixedly connected, and the shutter assembly 72 is rotationally connected to the shutter fixing frame 741. The “shielding portion 712” herein refers to a protrusion or plate member located around the feeding port 711 and used for guiding and blocking the flow of particles, which together with the shutter assembly 72 forms a double-closed interface to ensure that the support point maintains a relative position unchanged with the movement of the bean bin as a whole.

[0064] Specifically, the bottom of the bean bin body 71 is provided with a connecting hole 713, and the baffle assembly 72 is provided with a matching connecting column 721 which passes through the connecting hole 713 and is connected by a fastener 75, so that the baffle assembly 72 is rotationally connected to the bean bin body 71. This shaft type connection provides a clear pair of motion interfaces, so that the center of rotation of the baffle 722 is accurate, the rotation resistance is controllable, and the lateral play is not easy to occur, thereby ensuring that the baffle 722 can still maintain good sealing and positioning under long-term use; at the same time, the structure is easy to disassemble and maintain, the cost of replacing worn parts is low, and the wear resistance is improved by selecting appropriate materials and surface treatment (such as nickel plating, hardening layer), thereby reducing the risk of scattering beans caused by shaft wear or fastener loosening.

[0065] Preferably, the shielding part 712 is in a symmetrical fan-shaped structure, and the baffle 722 of the baffle assembly 72 is in a symmetrical fan-shaped structure. The design of the symmetrical fan-shaped structure is an optimal structure in terms of geometric cooperation, force balance and particle flow control. The symmetrical fan shape allows the force of the baffle 722 to be evenly distributed on the left and right sides during opening / closing, avoiding jamming or edge leakage caused by uneven load; the gradual opening of the fan shape allows the beans to flow smoothly without instantaneous impact, which is beneficial to stabilize the discharging speed and reduce particle rebound and retention; when closed, the overlapping arcs form a sealed circle, which can form a good sealing interface, improve the overall sealing performance and user experience, and at the same time, the appearance is more coordinated and beautiful.

[0066] Preferably, the main machine buckle 742 includes a first main machine buckle 7421 and a second main machine buckle 7422 which are symmetrically arranged on the outer edge of the discharging port of the main machine shell 6, and a rotation-in area 7423 is arranged below the first main machine buckle 7421 and the second main machine buckle 7422, for the bean bin buckle 7411 of the bean bin body 71 to be rotated into for fixation. Specifically, the first main machine buckle 7421 and the second main machine buckle 7422 are arc-shaped protrusions which are left-right symmetrical on the outer edge of the discharging port of the main machine, and a gap is left between the two arc-shaped protrusions for the bean bin buckle 7411 to pass when being installed downward, so that the bean bin buckle 7411 can be clamped after the user rotates a certain angle and the bean bin buckle 7411 enters the rotation-in area 7423. Since the bean bin buckle 7411 is located relatively above the baffle fixing frame 741, the baffle fixing frame 741 is constrained by the first main machine buckle 7421 and the second main machine buckle 7422, so that the position of the baffle assembly 72 is fixed relative to the main machine during rotation of the bean bin body 71.

[0067] Preferably, the second host buckle 7422 is also provided with an error-proof structure 7424 below, which is used to prevent the installation of the bean bin body 71 from being screwed in the wrong direction. Here, the "error-proof structure 7424" refers to any geometric structure that can prevent or prompt installation in the incorrect direction, such as key positions, stepped holes, one-way bosses, etc. In this embodiment, a protruding structure is added below the second host buckle 7422 to block the bean bin buckle 7411 from entering the screw-in area 7423 in the wrong direction. Only in the correct direction can it smoothly enter the screw-in area 7423.

[0068] Preferably, the shielding part 712 is in an arch structure. The "arch structure" can refer to the shielding part 712 forming an arched curved surface with a certain height along the longitudinal direction, with the center higher than the two ends. Thin-walled reinforcing ribs can be added to the arch top to improve local rigidity; the surface is smooth to reduce particle retention. This structure can guide the beans in the bean bin to flow as much as possible to the feed inlet 711, reducing retention around the feed inlet 711.

[0069] Preferably, the main machine shell 6 is provided with a powder outlet pipe fixing bracket 81, and the inside of the powder outlet pipe fixing bracket 81 is symmetrically provided with a positioning protrusion 811. The powder outlet pipe 82 is provided with a positioning hole 821 at a corresponding position, and the size of the positioning protrusion 811 and the positioning hole 821 is matched, so that the powder outlet pipe 82 and the powder outlet pipe fixing bracket 81 are hingedly connected. Specifically, the powder outlet pipe fixing bracket 81 is provided with an elastic strip 812, which can be deformed outward by appropriate force, and returns to its original position after the force is removed. The positioning protrusion 811 is arranged on the inner side of the elastic strip 812, and the hinged connection is achieved by the cooperation of the positioning protrusion 811 and the positioning hole 821, which is preferred because it provides a reliable pivot connection and facilitates positioning. By arranging the positioning protrusion 811 on the elastic strip 812, it is more convenient to install and remove the powder outlet pipe 82 by simply inserting and pulling. Preferably, the positioning protrusion 811 is in the form of a smooth protruding structure, which makes it easier to insert and install the powder outlet pipe 82 into the powder outlet pipe fixing bracket 81 through a sleeve connection. The positioning hole 821 is a corresponding hole on the powder outlet pipe 82 or its bushing, and the smooth protruding structure and the hole form a rotating connection, allowing the powder outlet pipe 82 to have a controllable rotating axis during adjustment, facilitating the cooperation of the supporting lip and the adjusting bracket, simplifying the production line assembly and maintenance, and facilitating the replacement of standardized parts.

[0070] The assembly method of the grinder provided in this embodiment includes the following steps:

[0071] S1: Connect the circuit structure of the grinder assembly and the main machine shell 6;

[0072] S2: As a complete module, the grinder assembly is integrally assembled into the bearing structure 61 of the main machine shell 6 through its installation positioning part 12.

[0073] The application is described by preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the application. The application is not limited by the specific embodiments disclosed herein, and other embodiments falling within the claims of the application are within the scope of the application.

Claims

1. A bean grinding assembly, characterized by, The grinder assembly comprises: a modular support; a driving motor fixedly installed on the modular support; a grinding mechanism installed on the modular support and in transmission connection with the output end of the driving motor, the grinding mechanism comprising a stator grinding disc and a rotor grinding disc, the grinding mechanism being provided with an inlet and a powder outlet; an adjusting mechanism for adjusting the grinding gap between the stator grinding disc and the rotor grinding disc; the modular support being provided with a test interface and an installation positioning part, so that the grinder assembly can be assembled on a test tool independently of the whole machine, and the grinding state of the grinding mechanism can be independently adjusted and tested by connecting power supply and control signals through the test interface.

2. The grinder assembly according to claim 1, wherein: the adjusting mechanism comprises an adjusting disc rotatably installed on the grinding mechanism, and rotating the adjusting disc drives the stator grinding disc or the rotor grinding disc to move axially to change the grinding gap.

3. The grinder assembly according to claim 2, wherein: a lower disc assembly and an upper disc assembly adapted to the lower disc assembly are installed in the modular support; the adjusting disc and the upper disc assembly are in threaded connection, and rotating the adjusting disc can drive the upper disc assembly to move axially, so as to adjust the distance between the stator grinding disc installed on the upper disc assembly and the rotor grinding disc installed on the lower disc assembly; the upper disc assembly and the lower disc assembly are installed in the modular support in sequence from top to bottom; the modular support is centrally symmetrically provided with a plurality of installation protruding columns, the threaded structure of the threaded connection part of the upper disc assembly is provided with a plurality of breaking structures, the positions and sizes of the breaking structures and the installation protruding columns are matched, and the installation protruding columns are provided with threaded holes for connection with the main machine shell.

4. The grinder assembly according to claim 2, further comprising a needle bearing arranged between the adjusting disc and the modular support, for preventing the adjusting disc from being inconsistent in hand feeling or being stuck or loose due to excessive friction when adjusting the grinding fineness. The grinder assembly according to any one of claims 1-4; 5. A bean grinder, characterized by a main machine shell provided with a bearing structure matched with the installation positioning part of the grinder assembly.

6. The grinder according to claim 5, wherein: the installation positioning part is a symmetrically distributed semicircular clamping groove, the bearing structure is a screw column matched with the semicircular clamping groove, and the grinder assembly is connected with the main machine shell through the semicircular clamping groove.

7. The grinder according to claim 5, further comprising a bean bin, a baffle and a linkage mechanism, the baffle being located between the bean bin and the inlet; when the bean bin is installed on the modular support / main machine shell and rotates in a first direction, the linkage mechanism is triggered to open the baffle; when the bean bin rotates in a second direction opposite to the first direction, the linkage mechanism is triggered to close the baffle, and then the bean bin can be removed from the modular support / main machine shell.

8. The grinder according to claim 5, wherein: ​ ​ ​ The host shell is provided with a powder outlet pipe fixing frame, the inside of the powder outlet pipe fixing frame is symmetrically provided with positioning protrusions, the corresponding positions of the powder outlet pipe are provided with positioning holes, and the sizes of the positioning protrusions and the positioning holes are matched, so that the powder outlet pipe and the powder outlet pipe fixing frame are hingedly connected.

9. A method of assembling a bean grinder as claimed in any one of claims 5 to 8, characterised in that, The method comprises the following steps: S1: connecting the circuit structure of the bean grinding assembly and the host shell; S2: taking the bean grinding assembly as a complete module, and integrally assembling the bean grinding assembly into the bearing structure of the host shell through the mounting positioning part of the bean grinding assembly.

10. A method of testing a bean grinder assembly as claimed in any one of claims 1 to 4, characterised in that, The method comprises the following steps: P1: fixing the bean grinding assembly to a test tool through the mounting positioning part of the bean grinding assembly; P2: supplying power to the driving motor through the test interface and receiving signals of the driving motor; P3: running the bean grinding assembly, and detecting the fineness uniformity of the ground coffee powder in real time on the test tool; P4: according to the detection result, adjusting the adjusting disc to calibrate the grinding gap; P5: after the test is qualified, taking the bean grinding assembly off the test tool, and taking the bean grinding assembly as a qualified module for use in the assembly of the whole machine.

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