Automatic coffee machine with visual brewing process and brewing method thereof

Abstract

The invention discloses an automatic coffee machine with a visual brewing process and a brewing method thereof, and belongs to the technical field of coffee equipment.The automatic coffee machine comprises a machine base, and a powder grinding mechanism, a powder pressing mechanism and a milk foaming mechanism are arranged on the machine base. The machine base comprises a mounting plate, and a grinding station and a brewing station are arranged on the mounting plate side by side. The mounting plate is slidably connected with a moving seat, and the moving seat is detachably connected with a filter cup; the station driving device is used for driving the moving seat to drive the filter cup to reciprocate between the two stations. The powder pressing mechanism is provided with a powder pressing module, the powder pressing module comprises a sliding seat and a brewing head, and an elastic component is arranged between the sliding seat and the brewing head and allows the sliding seat and the brewing head to axially and relatively move. The filter cup is detachably connected with the movable seat, and after extraction is completed, a user is required to firstly dismantle the filter cup to clean coffee grounds, the movable seat can be reset, and the user is reminded to clean the grounds in time; in combination with the visual design of the brewing process, the sanitary condition of the coffee machine is remarkably improved, and the operation convenience and the user experience are both considered.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coffee equipment, and particularly relates to an automatic coffee machine with visualized brewing process and a brewing method thereof. BACKGROUND

[0002] Espresso machines have been deeply loved by global consumers in recent years due to their ability to produce coffee with unique aroma and rich taste, especially in scenarios where life quality and efficient office are pursued. Currently, espresso machines on the market are mainly divided into two types: full-automatic and semi-automatic. Although full-automatic coffee machines are easy to operate, they generally lack the traditional espresso brewing experience. Due to the use of automatic powder pressing structure with fixed parameters, it is difficult to adapt to the change of powder pressing force required by different powder amounts, resulting in poor extraction stability and affecting the consistency of coffee taste. In addition, the internal structure of full-automatic coffee machines is complex, and cleaning and maintenance are troublesome, especially in office scenarios, which is easy to be ignored, affecting the health condition; the brewing process is usually invisible, and it is also difficult for users to experience the handmade ritual of espresso coffee. On the other hand, although semi-automatic coffee machines retain the visibility and operation participation of the brewing process to some extent, the powder grinding, powder loading, powder pressing and station switching still need manual operation, and the use process is interrupted, and the experience is not smooth and convenient.

[0003] In view of the above problems, some improvement attempts have been made in the prior art. For example, the Chinese patent document with publication number CN 118787234A discloses a semi-automatic coffee machine, which includes a machine body, a bean grinding assembly, a weighing module and an extraction and powder pressing module. The scheme detects the weight of coffee powder in real time through the weighing module, thereby controlling the operation of the bean grinding assembly to improve the powder amount accuracy and coffee flavor. At the same time, it adopts an integrated extraction and powder pressing module, which can complete the powder pressing and extraction steps in the same module, reducing manual intervention. Although this design has made some progress in powder amount control and operation integration, it still has the following shortcomings: (1) the switching between different functional stations (such as the powder grinding station and the brewing station) of the coffee machine still relies on manual operation, the degree of automation is limited, and the user experience is not coherent enough; (2) the powder pressing module still uses fixed pressure or structure, which cannot adaptively adjust the powder pressing force according to the actual powder amount, making it difficult to ensure the uniformity of compaction under different powder amounts; (3) the overall functional integration degree is not high, lacking of extended functions such as automatic milk frothing, flushing reminder, etc., and there are still blind spots in cleaning and maintenance, which fails to systematically improve the making experience and health management level of espresso coffee.

[0004] Therefore, it is necessary to provide a new type of coffee machine with visualized brewing process, high degree of automation and self-adaptive powder pressing force adjustment to solve the problems of insufficient automation, poor powder pressing adaptability, inconvenience in cleaning and experience deficiency in the prior art, so as to improve the convenience of operation, the consistency of coffee quality and the overall user experience. SUMMARY

[0005] In view of the problems in the prior art, the present application provides an automatic coffee machine with visualized brewing process and a brewing method thereof, so as to solve the technical problems of insufficient automation, poor powder compression adaptability, inconvenient cleaning and experience loss of the existing espresso coffee machine.

[0006] The technical scheme of the present application is as follows: an automatic coffee machine with visualized brewing process, comprising a base, wherein a grinding mechanism, a powder compression mechanism and a milk frothing mechanism are arranged on the base; the grinding mechanism is used for grinding coffee beans into powder and outputting the powder; the powder compression mechanism is used for powder compression and water injection extraction of the powder; the milk frothing mechanism is used for frothing milk and outputting the frothed milk; the base comprises a mounting plate, wherein a grinding station and a brewing station are arranged side by side on the mounting plate; the grinding mechanism outputs the powder to the grinding station; the powder compression mechanism is arranged on the brewing station;

[0007] A moving seat is slidingly connected to the mounting plate, and a filter cup for accommodating the powder is detachably connected to the moving seat; a station driving device is further included, which is used for driving the moving seat to move the filter cup reciprocally between the grinding station and the brewing station; the mounting plate is provided with an inductive switch at each station, which is used for sensing whether the filter cup is moved to the position;

[0008] The powder compression mechanism comprises a support frame, a powder compression module arranged on the support frame, and a powder compression driving device for driving the powder compression module to ascend or descend; the powder compression module comprises a sliding seat and a brewing head, and an elastic member is further arranged between the sliding seat and the brewing head, which provides a pre-tightening force for the brewing head to move away from the sliding seat, so that the brewing head and the sliding seat are kept connected and axial relative displacement therebetween is allowed;

[0009] The moving seat is initially arranged at the grinding station, and when the filter cup is arranged on the moving seat, the powder enters the cup cavity of the filter cup; the filter cup is moved to the brewing station by the station driving device, and the powder compression mechanism performs powder compression and water injection extraction on the powder; a container for containing the extracted liquid is arranged below the filter cup; after the filter cup is detached from the moving seat, the moving seat is driven by the station driving device to reset to the grinding station.

[0010] As a further improvement of the above scheme, when powdering, the powdering driving device drives the sliding seat and the brewing head as a whole to move downward to complete the first stage of powdering stroke; after the brewing head contacts the powder, the powdering driving device continues to drive the sliding seat to move downward to compress the elastic member, so that the axial relative displacement between the sliding seat and the brewing head is generated, and the second stage of powdering stroke is entered; the elastic force generated by the compression of the elastic member is continuously applied to the powder through the brewing head. Through the two-stage powdering action, after the first stage of powdering stroke is completed, the second stage of self-adaptive powdering phase is automatically entered by using the compression characteristics of the elastic member. The elastic force generated by the elastic member is adjusted according to the resistance of the powder, which overcomes the problem that the traditional fixed pressure powdering mechanism is difficult to adapt to different powder amounts, and ensures that the powder layer obtains uniform and stable compaction effect, and effectively improves the extraction stability.

[0011] As a further improvement of the above scheme, the upper end of the sliding seat is drivingly connected with the powdering driving device; the lower end of the sliding seat is provided with the brewing head; the brewing head is provided with a water injection channel for injecting water into the cup cavity;

[0012] The lower end of the sliding seat is provided with a first butt joint pipe body, and the upper end of the brewing head is correspondingly provided with a second butt joint pipe body, and the two butt joint pipe bodies are mutually sleeved and matched; a stop ring part is arranged on the circumferential side wall of one butt joint pipe body, and the end part of the other butt joint pipe body abuts against or is away from the stop ring part. Through the butt joint pipe body structure which is mutually sleeved and limited by the stop ring part, the required axial relative displacement between the brewing head and the sliding seat can be reliably guided during the powdering process, and the deviation or jamming is effectively avoided, and the reliability of the self-adaptive powdering action is improved.

[0013] As a further improvement of the above scheme, at least one column extending in the axial direction is arranged on the inner bottom surface of the brewing head; an abutting table is correspondingly arranged on the sleeved end of the sliding seat, the column passes through the abutting table from bottom to top, and a head cap is arranged at the passing-out end, so that the sliding seat is not separated from the column; the elastic member is sleeved on each column, one end of the elastic member abuts against the lower end surface of the abutting table, and the other end abuts against the inner bottom surface of the brewing head; the two-stage powdering process is completed through the column and the elastic member, the uniform powdering of different powder amounts is realized, and the powdering uniformity and the extraction stability are significantly improved; meanwhile, the whole adopts a pure mechanical structure, the action is reliable and easy to maintain.

[0014] A seat cavity is formed in the middle part of the sliding seat in the axial direction, at least one side wall of the seat cavity extends along the cross section to form the abutting table; a pin hole is arranged on the abutting table for sliding cooperation with the column. The abutting table is integrally extended from the middle part of the sliding seat, and the assembly of an additional connecting piece is avoided, so that the overall layout is more compact and reasonable.

[0015] As a further improvement of the above scheme, the top of the support frame is fixed with the powder pressing driving device; the powder pressing driving device comprises a powder pressing motor, and a first screw rod is drivingly connected to the output shaft of the powder pressing motor; a transmission block is drivingly connected to the first screw rod, and the transmission block is fixed to the upper portion of the sliding seat. The powder pressing motor and the first screw rod are directly arranged at the top of the support frame, and the transmission block is rigidly connected with the sliding seat, thereby providing a stable linear driving structure, eliminating complex intermediate transmission components, reducing the number of parts and potential failure points, and ensuring the durability of long-term use.

[0016] As a further improvement of the above scheme, the support frame comprises a main support plate, and support arms are formed by extending the two sides of the main support plate upward, and the powder pressing driving device is fixed to the upper ends of the two support arms.

[0017] The middle portion of the main support plate has a through mounting hole, so as to arrange the powder pressing module; at least two guide columns are arranged on the circumferential side of the mounting hole of the main support plate, and the circumferential edge of the sliding seat is outwardly protruded to form sliding ears, and each sliding ear is provided with a guide hole corresponding thereto, and the guide hole and the guide column are slidingly matched with each other. A plurality of guide columns are arranged on the circumferential side of the main support plate, and are slidingly matched with the sliding ears and the guide holes thereof on the sliding seat, thereby providing stable constraint for the lifting movement of the powder pressing module, effectively preventing the possible deflection or jamming during the powder pressing process, and ensuring the smooth movement of the powder pressing module along the axial direction.

[0018] As a further improvement of the above scheme, the front end of the mounting plate is provided with a through slot penetrating the upper and lower end faces, and the work station driving device is arranged on the through slot; the rear end of the mounting plate is provided with the grinding station and the brewing station side by side, and the work station driving device and the two stations have an isolation distance in the front-rear direction of the mounting plate.

[0019] The work station driving device comprises a bracket, one end of the bracket is provided with a work station motor, and a second screw rod is drivingly connected to the rotating shaft of the work station motor; the second screw rod is drivingly connected with a sliding block, and the sliding block is fixedly connected with the moving seat through the through slot; the work station motor provides power for the rotation of the second screw rod, and drives the sliding block to move along the axial direction of the second screw rod. Through the linear transmission of the second screw rod and the sliding block, the gear and rack meshing structure is replaced, and high-precision meshing gap control is not required, thereby significantly reducing the manufacturing cost and maintenance difficulty. At the same time, the screw rod transmission pair and the grinding station and the brewing station have an isolation distance, thereby prolonging the path of the coffee powder invading the work station driving device, avoiding the jamming risk of the work station driving device, and overcoming the difficulty of frequent disassembly and cleaning of the existing gear and rack mechanism.

[0020] As a further improvement of the above scheme, the bracket is further provided with a translation guide matched with the sliding block, the translation guide comprises at least two first guide rods arranged parallel to the second screw axis, and the sliding block is provided with a sliding hole matched with the first guide rods in sliding manner; based on screw transmission, the translation guide effectively limits the rotation of the sliding block and ensures pure axial movement by arranging the sliding cooperation between the at least two first guide rods and the sliding hole of the sliding block, thereby reducing the requirement for machining precision. The guide rod can be machined by conventional turning process, and the fitting tolerance of the sliding hole is also greatly relaxed, which not only simplifies the structure, but also significantly reduces the overall manufacturing cost of the whole station switching mechanism.

[0021] The lower end surface of the mounting plate is provided with at least two second guide rods, each of which is parallel to the second screw axis and not directly below the two stations; the moving seat is provided with a rotating drum matched with the second guide rods in sliding manner. Through the sliding cooperation between the parallel arranged second guide rods and the rotating drum of the moving seat, the smoothness of the filter cup movement is optimized: the at least two second guide rods evenly share the load of the moving seat, avoiding single-point stress and eccentric wear; at the same time, the second guide rods avoid the layout directly below the station, effectively avoiding the contamination of coffee powder to the sliding pair and ensuring the smooth operation of station switching.

[0022] As a further improvement of the above scheme, the moving seat comprises a seat plate, the front end of the seat plate extends below the through slot, and the extended end of the seat plate is provided with a connecting part; the connecting part is fixedly connected with the sliding block through a fastener; the rear end of the seat plate is provided with a butt joint interface penetrating through the upper and lower end surfaces, used for mutually butt joint with the grinding station or the brewing station;

[0023] The rear circumferential side of the seat plate extends downward to form a surrounding wall, the surrounding wall protrudes inward in a semi-annular shape at the butt joint interface to form a clamping part; the lower edge of the filter cup mouth end is recessed inward to form a insertion slot; the filter cup is detachably matched with the clamping part of the moving seat through the insertion slot; the matching structure of the semi-annular clamping part and the filter cup insertion slot significantly optimizes the operation experience of disassembly. During installation, the user only needs to align the insertion slot of the filter cup with the clamping part and insert it, without the need for a screwing tool. The surrounding wall limits the filter cup in the circumferential direction, avoiding accidental loosening caused by extraction vibration, and is convenient and fast.

[0024] The cup mouth end surface of the filter cup is further provided with a magnetic key, and the inductive switches on the two stations are used to sense whether the magnetic key on the filter cup moves to the corresponding station; the seat plate of the moving seat is arranged between the magnetic key and the inductive switch, and the thickness of the seat plate is less than the sensing distance of the inductive switch. The non-contact detection structure of the magnetic key and the inductive switch avoids the failure of mechanical touch control caused by contamination of coffee powder, effectively ensuring the reliability of the filter cup in-place detection.

[0025] A brewing method of an automatic coffee machine, applied to an automatic coffee machine with a brewing process visualization as described above, comprising the following steps:

[0026] S1. Initial state setting: Place the mobile seat in the grinding station, and install the filter cup on the mobile seat; start the grinding mechanism, grind the coffee beans into powder, and output to the cup cavity of the filter cup located in the grinding station;

[0027] S2. Station automatic switching: drive the mobile seat to move the filter cup containing the powder from the grinding station to the brewing station through the station driving device; when the inductive switch arranged in the brewing station detects that the filter cup has moved into position, the station driving device stops working;

[0028] S3. Two-stage self-adaptive powder pressing:

[0029] S31. First-stage powder pressing: the sliding seat and the brewing head of the powder pressing module are driven by the powder pressing driving device to move downward as a whole until the brewing head contacts the surface of the powder in the filter cup;

[0030] S32. Second-stage powder pressing: the powder pressing driving device continues to drive the sliding seat to move downward, the sliding seat overcomes the pre-tightening force of the elastic member and compresses the elastic member, so that the axial relative displacement between the sliding seat and the brewing head is generated; the elastic force generated by the compression of the elastic member is continuously applied to the powder through the brewing head, realizing uniform powder pressing adapted to the powder amount;

[0031] S4. Water injection extraction: high-pressure hot water is supplied to the brewing head of the powder pressing mechanism, and the water flow penetrates the compacted powder layer for extraction, and the extracted liquid flows into the container arranged below the filter cup;

[0032] S5. Reset and cleaning: after the extraction is completed, the powder pressing driving device drives the powder pressing module to rise and reset; the filter cup is removed from the mobile seat for cleaning coffee residue; the station driving device drives the mobile seat to reset to the grinding station, waiting for the next brewing operation;

[0033] S6. Milk foam production and output: according to the user's selection, the milk is foamed through the milk foam mechanism, and the milk foam is output to the container to mix with the extracted liquid.

[0034] Beneficial effects:

[0035] (1) The mobile seat drives the filter cup to reciprocate between the grinding station and the brewing station automatically through the station driving device, and the inductive switches arranged in the two stations realize precise positioning, completely replacing the manual station switching operation required by the traditional semi-automatic coffee machine, significantly improving the automation degree and operation continuity of coffee production, while retaining the core experience of Italian coffee production such as filter cup disassembly and visual brewing.

[0036] (2) The powder pressing module with sliding seat, brewing head and elastic member is combined with the powder pressing driving device control to realize two-stage powder pressing process of overall pressing and elastic compression. The elastic force generated by the compressed elastic member is self-adaptively adjusted with the powder amount, ensuring that uniform and stable powder pressing strength can be obtained under different powder amounts, effectively solving the unstable extraction problem caused by fixed pressure of traditional automatic powder pressing structure, and improving coffee taste and flavor consistency.

[0037] (3) Through the detachable connection design of the filter cup and the moving seat, and the requirement that the user must first remove the filter cup to clean the coffee residue before the moving seat can be driven by the station driving device to reset to the grinding station, the interlocking mechanism effectively reminds and forces the user to clean the residue in time, avoiding cleaning omission; combined with the visual design of the brewing process, the hygiene of the coffee machine is significantly improved, especially suitable for public environments such as office places, while considering the operation simplicity and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a perspective view of the automatic coffee machine of the present application;

[0039] Figure 2 is a combined perspective view of the grinding station, brewing station and station driving device of the present application;

[0040] Figure 3 is another angle combined perspective view of the grinding station, brewing station and station driving device of the present application;

[0041] Figure 4 is a combined side view of the grinding station, brewing station and station driving device of the present application;

[0042] Figure 5 is an A-A sectional view of Figure 4 ;

[0043] Figure 6 is a combined top view of the grinding station, brewing station and station driving device of the present application;

[0044] Figure 7 is a B-B sectional view of Figure 6 ;

[0045] Figure 8 is a combined perspective view of the powder pressing mechanism, moving seat and filter cup of the present application;

[0046] Figure 9 is a perspective view of the powder pressing mechanism of the present application;

[0047] Figure 10 is an exploded view of the powder pressing mechanism of the present application;

[0048] Figure 11Structure diagram of the powder pressing mechanism of the present application;

[0049] Figure 12 Three-dimensional view of the support frame of the powder pressing mechanism of the present application;

[0050] Figure 13 Three-dimensional view of the sliding seat of the powder pressing mechanism of the present application;

[0051] Figure 14 Working diagram of two-stage powder pressing of the powder pressing mechanism of the present application;

[0052] Figure 15 Three-dimensional view of the station driving device of the present application;

[0053] Figure 16 Three-dimensional view of the moving seat of the present application;

[0054] Figure 17 Three-dimensional view of the moving seat of the present application from another perspective;

[0055] Figure 18 Working diagram of the assembly of the filter cup and the moving seat of the present application;

[0056] Figure 19 Working diagram of the station switching of the present application;

[0057] Reference signs:

[0058] C1, coffee machine; C2, machine base; F1, powder;

[0059] G1, powder grinding station; G2, brewing station;

[0060] 1, mounting plate; 11, through slot; 12, isolation distance; 13, partition; 14, second guide rod; 15, support lug; 16, shaft hole; 161, rotation stopping hole; 17, induction switch;

[0061] 2, moving seat; 21, rotating drum; 22, seat plate; 23, connecting part; 24, butt joint; 25, enclosing wall; 26, clamping part; 27, second magnetic attraction part;

[0062] 3, filter cup; 3a, cup cavity; 31, insertion slot; 32, first magnetic attraction part; 33, magnetic key;

[0063] 4, station driving device; 41, support frame; 42, station motor; 43, second screw rod; 44, sliding block; 441, sliding hole; 45, translation guide part; 451, first guide rod;

[0064] 5, powder pressing mechanism;

[0065] 51, support frame;

[0066] 511 main support plate; 511a mounting port; 512 support arm; 513 guide column; 514 backing plate; 515 in-place switch;

[0067] 52 powder compression module;

[0068] 521 sliding seat; 521a seat cavity; 521b pin hole; 5211 first docking pipe body; 5212 abutment table; 5213 sliding ear; 5214 guide hole; 5215 trigger lever;

[0069] 522 brewing head; 5221 second docking pipe body; Z1 stop ring; 5222 column; 5223 head cap; 5224 brewing body; 5225 groove; 5226 sealing ring; 5227 powder compression net; 5228 cavity;

[0070] 523 water injection channel; 524 elastic member;

[0071] 53 powder compression driving device; 531 powder compression motor; 532 first screw rod; 533 transmission block;

[0072] 6 powder grinding mechanism;

[0073] 7 milk frothing mechanism. DETAILED DESCRIPTION

[0074] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0075] In the description of the present application, it should be understood that the term "several" means "at least one", and the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0076] Embodiment:

[0077] As Figures 1-19As shown, the embodiment provides an automatic coffee machine with brewing process visualization, comprising a base C2, wherein a grinding mechanism 6, a powder pressing mechanism 5 and a milk frothing mechanism 7 are arranged on the base C2; the grinding mechanism 6 is used for grinding coffee beans into powder F1 and outputting; specifically, the grinding mechanism 6 adopts a quantitative grinding mechanism 6, which can realize quantitative powder output by controlling grinding time or real-time weighing. The powder pressing mechanism 5 is used for powder pressing and water injection extraction of the powder F1; the milk frothing mechanism 7 is used for frothing and outputting milk; specifically, the milk frothing mechanism 7 is arranged on the side wall of the base C2 and located on the side close to the powder pressing mechanism 5. The milk frothing mechanism 7 mainly introduces steam through a steam pipe, at the same time, milk is sucked from a milk pipe and air is sucked from an air hole. The steam, milk and air are fully mixed, sheared and impacted in a frothing device or mixing chamber, so that the milk protein and fat wrap the air to form delicate milk foam, and the steam can also heat the milk.

[0078] The base C2 comprises a mounting plate 1, wherein a grinding station G1 and a brewing station G2 are arranged side by side on the mounting plate 1; the powder F1 output by the grinding mechanism 6 is output to the grinding station G1; and the powder pressing mechanism 5 is arranged on the brewing station G2. The mounting plate 1 is slidingly connected with a moving seat 2, and a filter cup 3 for accommodating the powder F1 is detachably connected to the moving seat 2; further comprising a station driving device 4, which is used for driving the moving seat 2 to move the filter cup 3 reciprocally between the grinding station G1 and the brewing station G2; the mounting plate 1 is respectively provided with an inductive switch 17 at the two stations, which is used for sensing whether the filter cup 3 is moved to the position;

[0079] The powder pressing mechanism 5 comprises a support frame 51, a powder pressing module 52 arranged on the support frame 51, and a powder pressing driving device 53 for driving the powder pressing module 52 to ascend or descend; the powder pressing module 52 comprises a sliding seat 521 and a brewing head 522, and an elastic member 524 is further arranged between the sliding seat 521 and the brewing head 522, which provides the brewing head 522 with a pre-tightening force away from the sliding seat 521, so that the brewing head 522 and the sliding seat 521 are kept connected and axial relative displacement therebetween is allowed;

[0080] The mobile seat 2 is initially placed in the grinding station G1, and after the filter cup 3 is installed on the mobile seat 2, the powder F1 enters the cup cavity 3a of the filter cup 3; the filter cup 3 is moved to the brewing station G2 by the mobile seat 2 and the station driving device 4, and the powder F1 is pressed and water-extracted by the powder pressing mechanism 5; when the powder is pressed, the powder pressing driving device 53 drives the sliding seat 521 and the brewing head 522 to move downward as a whole to complete the first-stage powder pressing stroke; after the brewing head 522 contacts the powder F1, the powder pressing driving device 53 continues to drive the sliding seat 521 to move downward against the pre-tightening force of the elastic member 524, compresses the elastic member 524, and causes the sliding seat 521 and the brewing head 522 to axially relatively displace, entering the second-stage powder pressing stroke; the elastic force generated by the compression of the elastic member 524 is continuously applied to the powder F1 through the brewing head 522. Through the two-stage powder pressing action, after the first-stage powder pressing stroke is completed, the second-stage self-adaptive powder pressing stage is automatically entered by using the compression characteristics of the elastic member 524. The elastic force generated by the elastic member 524 is adjusted according to the resistance of the powder F1, which overcomes the problem that the traditional fixed-pressure powder pressing mechanism 5 is difficult to adapt to different powder amounts, ensures that the powder layer obtains uniform and stable compaction effect, and effectively improves the extraction stability.

[0081] A container for containing the extracted liquid is placed below the filter cup 3; after the filter cup 3 is removed from the mobile seat 2, the mobile seat 2 is driven by the station driving device 4 to reset to the grinding station G1.

[0082] In the embodiment, the upper end of the sliding seat 521 is drivingly connected with the powder pressing driving device 53; the lower end of the sliding seat 521 is provided with the brewing head 522; the brewing head 522 is provided with a water injection channel 523 for injecting water into the cup cavity 3a; in the embodiment, the brewing head 522 comprises a brewing main body 5224, the brewing main body 5224 is provided with a groove 5225 on the side, and the groove 5225 is provided with a sealing ring 5226 abutting against the inner wall of the cup cavity 3a; the lower part of the brewing main body 5224 is provided with a powder pressing net 5227, and the powder pressing net 5227 and the brewing main body 5224 form a cavity 5228 therebetween; after the water flow in the water injection channel 523 enters the cavity 5228, it enters the cup cavity 3a through the powder pressing net 5227.

[0083] In the embodiment, the support frame 51 comprises a main support plate 511, the two sides of the main support plate 511 extend upward to form support arms 512, and the powder pressing driving device 53 is fixedly arranged at the upper ends of the two support arms 512;

[0084] The middle part of the main support plate 511 has a through upper and lower mounting port 511a to set the powder pressing module 52; the main support plate 511 is provided with at least two guide columns 513 on the circumferential side of the mounting port 511a, and the circumferential edge of the sliding seat 521 is respectively outwardly protruded to form a sliding ear 5213, and each sliding ear 5213 is correspondingly provided with a guide hole 5214, and the guide hole 5214 and the guide column 513 are slidably matched. Specifically, the guide column 513 can be provided as 2, arranged on the same side or diagonally arranged; of course, the guide column 513 can also be provided as 4, arranged in a quadrilateral. A plurality of guide columns 513 are arranged on the circumferential side of the main support plate 511, and are slidably matched with the sliding ear 5213 and the guide hole 5214 on the sliding seat 521, thereby providing stable constraint for the lifting movement of the powder pressing module 52, effectively preventing the possible deflection or jamming in the powder pressing process, and ensuring smooth movement of the powder pressing module 52 along the axial direction.

[0085] In the embodiment, the main support plate 511 is also provided with a backing plate 514 around the mounting port 511a; the powder pressing driving device 53 drives the powder pressing module 52 to slide downward, so that the sliding ear 5213 of the sliding seat 521 is pressed against the backing plate 514. Specifically, the backing plate 514 can be made of rubber material. By arranging the backing plate 514 on the circumferential side of the mounting port 511a of the main support plate 511, when the sliding seat 521 is lowered to the limit position, the sliding ear 5213 can be stably pressed on the backing plate 514, and the buffering characteristics of the backing plate 514 are utilized to avoid rigid collision and impact, thereby effectively prolonging the service life.

[0086] In the embodiment, the top of the support frame 51 is fixedly provided with the powder pressing driving device 53; the powder pressing driving device 53 includes a powder pressing motor 531, and the output shaft of the powder pressing motor 531 is drivingly connected with a first screw rod 532; a transmission block 533 is drivingly connected on the first screw rod 532, and the transmission block 533 is fixedly arranged on the upper part of the sliding seat 521. Specifically, the transmission block 533 is provided with a threaded structure matched with the first screw rod 532, so as to drive the transmission block 533 to drive the sliding seat 521 to ascend or descend. The powder pressing motor 531 and the first screw rod 532 are directly arranged on the top of the support frame 51, and the rigid connection of the transmission block 533 and the sliding seat 521 provides a stable linear driving structure, which saves the complex intermediate transmission components, reduces the number of parts and potential failure points, and ensures the durability in long-term use.

[0087] The lower end of the sliding seat 521 is provided with a first docking pipe body 5211, and the upper end of the brewing head 522 is correspondingly provided with a second docking pipe body 5221, and the two docking pipe bodies are matched with each other in a sleeved manner; a stop ring part Z1 is arranged on the circumferential side wall of one of the docking pipe bodies, and the end part of the other docking pipe body is in abutment or away from the stop ring part Z1. Through the sleeved docking pipe body structure and the limiting of the stop ring part Z1, the required axial relative displacement between the brewing head 522 and the sliding seat 521 can be reliably guided during the powder pressing process, the deviation or jamming is effectively avoided, and the reliability of the self-adaptive powder pressing action is improved.

[0088] In the embodiment, at least one column 5222 extending in the axial direction is arranged on the inner bottom surface of the brewing head 522; the sliding seat 521 is correspondingly provided with an abutment table 5212 at the sleeved end, the column 5222 passes through the abutment table 5212 from bottom to top, and a head cap 5223 is arranged at the passing-out end, so that the sliding seat 521 does not deviate from the column 5222; specifically, the head cap 5223 can be arranged separately from the column 5222 and is fixed to each other by a fastener such as a screw. In the embodiment, the column 5222 is preferably two and is arranged vertically. The elastic member 524 is sleeved on each column 5222, one end of the elastic member 524 abuts on the lower end surface of the abutment table 5212, and the other end abuts on the inner bottom surface of the brewing head 522. Specifically, the elastic member 524 is preferably a compression spring, and the two-stage powder pressing process is completed by the column 5222 and the elastic member 524, the uniform powder pressing of different powder amounts is realized, and the powder pressing uniformity and the extraction stability are significantly improved; at the same time, the whole adopts a pure mechanical structure, the action is reliable and easy to maintain.

[0089] The middle part of the sliding seat 521 is formed with a seat cavity 521a in the axial direction, and at least one side wall of the middle part of the seat cavity 521a extends in the transverse direction to form the abutment table 5212; the abutment table 5212 is provided with a pin hole 521b for sliding cooperation with the column 5222. Specifically, the abutment table 5212 is formed in a half-ring-shaped platform by extending along the horizontal direction, and the middle ring opening can accommodate the water injection channel 523; the abutment table 5212 is integrally extended from the middle part of the sliding seat 521, which avoids assembling an additional connecting piece, so that the overall layout is more compact and reasonable.

[0090] In the embodiment, the upper part of the sliding seat 521 is protruded to one side to form a trigger lever 5215; the support frame 51 is provided with a position reaching switch 515 on the same side of the trigger lever 5215 for sensing the position reaching signal of the trigger lever 5215. Specifically, the position reaching switch 515 can be a contact type micro switch or a non-contact type proximity switch. By providing the trigger lever 5215 on the upper part of the sliding seat 521 and installing the position reaching switch 515 on the corresponding position of the support frame 51, when the sliding seat 521 drives the brewing head 522 to move to the preset powder pressing position, the trigger lever 5215 can accurately trigger the position reaching switch 515, avoiding mechanical jamming or overpressure.

[0091] In the embodiment, the front end of the mounting plate 1 is provided with a through slot 11 penetrating the upper and lower end faces, and the through slot 11 is provided with the station driving device 4; the rear end of the mounting plate 1 is provided with the grinding station G1 and the brewing station G2 side by side, and the station driving device 4 and the two stations have an isolation distance 12 in the front-rear direction of the mounting plate 1; in the embodiment, a partition plate 13 is arranged between the station driving device 4 and the two stations, and the partition plate 13 extends along the width direction of the mounting plate 1. The laterally extending partition plate 13 sets up a physical barrier between the station driving device 4 and the stations, effectively blocking the splashed coffee powder in the grinding / brewing process from invading the transmission components, reducing the risk of jamming caused by the contamination of the screw and the sliding block 44 by the powder residue, and ensuring the stability of the station switching.

[0092] The station driving device 4 comprises a bracket 41, one end of the bracket 41 is provided with a station motor 42, and the rotating shaft of the station motor 42 is drivingly connected with a second screw 43; the second screw 43 is drivingly connected with a sliding block 44, and the sliding block 44 is fixedly connected with the moving seat 2 through the through slot 11; the station motor 42 provides power for the rotation of the second screw 43 and drives the sliding block 44 to move along the axis direction of the second screw 43. Through the linear transmission cooperation of the second screw 43 and the sliding block 44, the gear and rack meshing structure is replaced, without the need for high-precision meshing gap control, significantly reducing the manufacturing cost and maintenance difficulty. At the same time, the screw transmission pair and the grinding station G1 and the brewing station G2 have an isolation distance 12, which prolongs the path of the coffee powder invading the station driving device 4, avoids the risk of jamming of the station driving device 4, and overcomes the difficulty of frequent disassembly and cleaning of the existing gear and rack mechanism.

[0093] In the embodiment, the support 41 is further provided with a translation guide 45 cooperating with the sliding block 44. The translation guide includes at least two first guide rods 451 arranged parallel to the axis of the second screw rod 43. The sliding block 44 is provided with sliding holes 441 slidingly cooperating with the first guide rods 451. In the embodiment, the number of the first guide rods 451 is preferably two. Based on screw rod transmission, the translation guide 45 is provided with the sliding cooperation of the at least two first guide rods 451 and the sliding holes 441 of the sliding block 44, effectively limiting the rotation of the sliding block 44 and ensuring the pure axial movement, reducing the requirement for machining precision. The guide rods can be machined by conventional turning process, and the fitting tolerance of the sliding holes 441 is also greatly relaxed, which not only simplifies the structure, but also significantly reduces the overall manufacturing cost of the whole station switching mechanism.

[0094] The lower end surface of the mounting plate 1 is provided with at least two second guide rods 14, each of which is parallel to the axis of the second screw rod 43 and not directly below the two stations. The moving seat 2 is provided with a rotating drum 21 slidingly cooperating with the second guide rods 14. In the embodiment, the number of the second guide rods 14 is preferably two. Through the sliding cooperation of the parallel second guide rods 14 and the rotating drum 21 of the moving seat 2, the smoothness of the movement of the filter cup 3 is optimized: the at least two second guide rods 14 evenly share the load of the moving seat 2, avoiding single-point stress and eccentric wear; at the same time, the second guide rods 14 avoid the layout directly below the station, effectively avoiding the contamination of the sliding pair by coffee powder and ensuring the smooth operation of the station switching.

[0095] In the embodiment, the two sides of the mounting plate 1 are respectively downwardly protruded to form support ears 15, each of which is provided with an axle hole 16 cooperating with the second guide rod 14; wherein the axle hole 16 of at least one side of the support ear 15 is a rotation-stopping hole 161 to constrain the rotation of the second guide rod 14 around its axis. In the embodiment, the axle hole 16 of one side of the support ear 15 is a rotation-stopping hole 161, and the axle hole 16 of the other side of the support ear 15 is a round hole; specifically, the rotation-stopping hole 161 can be a D-shaped hole; one end of the second guide rod 14 is provided with a D-shaped shaft matching the rotation-stopping hole 161; the other end is a round shaft matching the round hole. The rotation-stopping hole 161 on the support ear 15 effectively constrains the axial rotation of the second guide rod 14, eliminates the deflection friction of the rotating drum 21 caused by the rotation of the guide rod, avoids the local abnormal wear caused by the accidental rotation of the second guide rod 14, and significantly improves the stability and reliability of the movement of the moving seat 2.

[0096] In the embodiment, the mobile seat 2 comprises a seat plate 22, the front end of the seat plate 22 extends below the through slot 11, the extended end of the seat plate 22 is provided with a connecting part 23; the connecting part 23 is fixedly connected with the sliding block 44 through a fastener; the connecting part 23 comprises a boss protruding upward from the seat plate 22, the boss is provided with a through hole penetrating the upper and lower ends, and the rod part of the fastener such as a screw or a bolt is fixedly connected with the sliding block 44 through the through hole. The rear end of the seat plate 22 is provided with a butt joint 24 penetrating the upper and lower end faces, which is used for butt joint with the grinding station G1 or the brewing station G2; and is used for butt joint with the grinding station G1 or the brewing station G2. Specifically, the butt joint 24 can be circular, and the size of the cup opening of the filter cup 3 is adapted to each other.

[0097] The rear circumferential side of the seat plate 22 extends downward to form a surrounding wall 25, the surrounding wall 25 is inwardly protruded in a semi-ring shape at the butt joint 24 to form a clamping part 26; the lower edge of the cup opening end of the filter cup 3 is inwardly recessed to form a slot 31; the filter cup 3 is detachably matched with the clamping part 26 of the mobile seat 2 through the slot 31; the matching structure of the semi-ring clamping part 26 and the slot 31 of the filter cup 3 significantly optimizes the operation experience of disassembly. When installing, the user only needs to align the slot 31 of the filter cup 3 with the clamping part 26 and clamp it in, without the need for a screwing tool. The surrounding wall 25 circumferentially limits the filter cup 3, avoids accidental loosening caused by extraction vibration, and is convenient and fast.

[0098] In the embodiment, the filter cup 3 is further provided with a first magnetic attraction part 32 on the rear side wall close to the cup opening end, and the back of the mobile seat 2 is correspondingly provided with a second magnetic attraction part 27; when the filter cup 3 is installed on the mobile seat 2, the first magnetic attraction part 32 and the second magnetic attraction part 27 abut and magnetically attract each other. The first magnetic attraction part 32 and the second magnetic attraction part 27 are automatically attracted when the filter cup 3 is in place, which effectively prevents the filter cup 3 from being accidentally separated by external force. Specifically, the first magnetic attraction part 32 and the second magnetic attraction part 27 can be permanent magnets.

[0099] The cup opening end surface of the filter cup 3 is further provided with a magnetic key 33, and the inductive switch 17 on the two stations is used to sense whether the magnetic key 33 on the filter cup 3 moves to the corresponding station; the seat plate 22 of the mobile seat 2 is arranged between the magnetic key 33 and the inductive switch 17, and the thickness of the seat plate 22 is less than the sensing distance of the inductive switch 17. The non-contact detection structure of the magnetic key 33 and the inductive switch 17 avoids the failure of mechanical touch control caused by coffee powder pollution, and effectively ensures the reliability of the detection of the filter cup 3 in place. Specifically, the shape of the magnetic key 33 can be block-shaped, sheet-shaped or thin film coating, and the block-shaped structure is preferred in the embodiment. The inductive switch 17 can adopt a Hall sensor.

[0100] The embodiment also provides a brewing method of an automatic coffee machine, which is applied to the brewing process visualized automatic coffee machine as described above, and comprises the following steps:

[0101] S1. Initial state setting: Place the mobile seat 2 at the grinding station G1, and install the filter cup 3 on the mobile seat 2; start the grinding mechanism 6 to grind the coffee beans into powder F1 and output them into the cup cavity 3a of the filter cup 3 located at the grinding station G1.

[0102] S2. Station automatic switching: drive the mobile seat 2 with the filter cup 3 containing the powder F1 from the grinding station G1 to the brewing station G2 through the station driving device 4; when the inductive switch 17 arranged at the brewing station G2 detects that the filter cup 3 has moved into position, the station driving device 4 stops working; automatically drive the mobile seat 2 with the filter cup 3 to move back and forth between the grinding station G1 and the brewing station G2 through the station driving device 4, and realize precise positioning by cooperating with the inductive switches 17 arranged at the two stations, completely replacing the manual station switching operation required by traditional semi-automatic coffee machines, significantly improving the automation degree and operation continuity of coffee making, while retaining the core experience of Italian coffee making such as filter cup 3 disassembly and visual brewing.

[0103] S3. Two-stage self-adaptive powder pressing:

[0104] S31. First-stage powder pressing: drive the sliding seat 521 and the brewing head 522 of the powder pressing module 52 to move downward as a whole by the powder pressing driving device 53, until the brewing head 522 contacts the surface of the powder F1 in the filter cup 3;

[0105] S32. Second-stage powder pressing: continue to drive the sliding seat 521 to move downward by the powder pressing driving device 53, the sliding seat 521 overcomes the pre-tightening force of the elastic member 524 and compresses the elastic member 524, so that the axial relative displacement between the sliding seat 521 and the brewing head 522 is generated; the elastic force generated by the compression of the elastic member 524 is continuously applied to the powder F1 through the brewing head 522, realizing uniform powder pressing adapted to the powder amount;

[0106] The powder pressing module 52 with the sliding seat 521, the brewing head 522 and the elastic member 524 is adopted, combined with the control of the powder pressing driving device 53, to realize the two-stage powder pressing process of first overall downward pressing and then elastic compression. The elastic force generated by the compression of the elastic member 524 is self-adaptively adjusted according to the powder amount, ensuring that uniform and stable powder pressing force can be obtained under different powder amounts, effectively solving the problem of unstable extraction caused by fixed pressure in traditional automatic powder pressing structures, and improving the consistency of coffee taste and flavor.

[0107] S4. Water injection extraction: supply high-pressure hot water to the brewing head 522 of the powder pressing mechanism 5, and the water flow penetrates the compacted powder layer for extraction, and the extracted liquid flows into the container located below the filter cup 3;

[0108] S5. Reset and clean up: after the extraction is completed, the powder pressing driving device 53 drives the powder pressing module 52 to rise and reset; the filter cup 3 is detached from the moving seat 2 to clean up the coffee residue; the working position driving device 4 drives the moving seat 2 to reset to the grinding working position G1, and waits for the next brewing operation; through the detachable connection design of the filter cup 3 and the moving seat 2, and the requirement that the user must first remove the filter cup 3 to clean up the coffee residue after the extraction is completed, the moving seat 2 can be driven by the working position driving device 4 to reset to the grinding working position G1, and the interlocking mechanism effectively reminds and forces the user to clean up the residue in time, avoiding cleaning omission; combined with the visual design of the brewing process, the sanitary condition of the coffee machine C1 is significantly improved, which is especially suitable for public environments such as office places, and at the same time, the operation simplicity and user experience are considered.

[0109] S6. Milk foam making and output: according to the user selection, the milk is foamed by the milk foam mechanism 7, and the milk foam is output to the container to be mixed with the extraction liquid.

[0110] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. An automatic coffee machine with a visualized brewing process, comprising a base, wherein a grinding mechanism, a tamping mechanism, and a milk frothing mechanism are disposed on the base; the grinding mechanism is used to grind coffee beans into powder and output it; the tamping mechanism is used to tamp the powder and extract it with water; the milk frothing mechanism is used to foam milk and output it; characterized in that: The base includes a mounting plate, on which a grinding station and a brewing station are arranged side by side; the grinding mechanism outputs powder to the grinding station; the powder pressing mechanism is located on the brewing station; The mounting plate is slidably connected to a movable seat, and a filter cup for holding powder is detachably connected to the movable seat; it also includes a station drive device, which drives the movable seat to move the filter cup back and forth between the grinding station and the brewing station; the mounting plate is provided with induction switches at the two stations to sense whether the filter cup has moved into place. The powder pressing mechanism includes a support frame, on which a powder pressing module is provided, and a powder pressing drive device for driving the powder pressing module to rise or fall; the powder pressing module includes a sliding seat and a cooking head, and an elastic member is provided between the two, the elastic member provides a pre-tightening force to the cooking head away from the sliding seat, so that the cooking head and the sliding seat are connected and allow axial relative displacement between the two. The movable seat is initially placed at the grinding station. After the filter cup is installed on the movable seat, the powder enters the cup cavity of the filter cup. The filter cup is moved to the brewing station by the station drive device along with the movable seat. The powder pressing mechanism presses the powder and extracts it with water. A container for holding the extract is placed below the filter cup. After the filter cup is removed from the movable seat, the movable seat is driven by the station drive device to return to the grinding station.

2. The automatic coffee machine with visualized brewing process according to claim 1, characterized in that, During the pressing process, the pressing drive device drives the sliding seat and the cooking head to move downward as a whole, completing the first pressing stroke. After the cooking head contacts the powder, the pressing drive device continues to drive the sliding seat to move downward against the preload of the elastic member, compressing the elastic member and causing an axial relative displacement between the sliding seat and the cooking head, entering the second pressing stroke. The elastic force generated by the compression of the elastic member is continuously applied to the powder through the cooking head.

3. The automatic coffee machine with visualized brewing process according to claim 2, characterized in that, The upper end of the sliding seat is driven and connected to the powder pressing drive device; the lower end of the sliding seat is provided with the brewing head; the brewing head is provided with a water injection channel for injecting water into the cup cavity; The lower end of the sliding seat is provided with a first pair of connecting pipes, and the upper end of the brewing head is provided with a second pair of connecting pipes. The two connecting pipes are fitted together. One of the connecting pipes has a stop ring on its circumferential side wall, and the end of the other pair of connecting pipes abuts or separates from the stop ring.

4. The automatic coffee machine with visualized brewing process according to claim 3, characterized in that, At least one axially extending column is provided on the inner bottom surface of the brewing head; the sliding seat is provided with an abutment platform at the sleeve end, the column passes through the abutment platform from bottom to top, and a cap is provided at the protruding end to prevent the sliding seat from detaching from the column; the elastic member is sleeved on each column, one end of the elastic member abuts against the lower end surface of the abutment platform, and the other end abuts against the inner bottom surface of the brewing head; the middle part of the sliding seat forms a seat cavity through the axial direction, and at least one side wall of the middle part of the seat cavity extends along the cross section to form the abutment platform; the abutment platform is provided with a pin hole for sliding engagement with the column.

5. An automatic coffee machine with a visualized brewing process according to claim 1, characterized in that, The powder pressing drive device is fixedly mounted on the top of the support frame; the powder pressing drive device includes a powder pressing motor, and the output shaft of the powder pressing motor is driven and connected to a first screw; a transmission block is driven and connected to the first screw, and the transmission block is fixedly mounted on the upper part of the sliding seat.

6. An automatic coffee machine with a visualized brewing process according to claim 5, characterized in that, The support frame includes a main support plate, and the two sides of the main support plate extend upward to form support arms. The powder pressing drive device is fixed at the upper end of the two support arms. The main support plate has an upper and lower through mounting port in the middle for mounting the powder pressing module; the main support plate has at least two guide posts on the periphery of the mounting port, and the circumferential edges of the sliding seat protrude outward to form sliding ears, each sliding ear having a corresponding guide hole, the guide hole and the guide post slidingly engaging with each other.

7. An automatic coffee machine with a visualized brewing process according to claim 1, characterized in that, The front end of the mounting plate is provided with a through groove that runs through the upper and lower end faces, and the station driving device is provided on the through groove; the rear end of the mounting plate is provided with the grinding station and the brewing station side by side, and the station driving device and the two stations are separated by an isolation distance along the front-back direction of the mounting plate. The workstation drive device includes a bracket, one end of which is equipped with a workstation motor. The shaft of the workstation motor is driven and connected to a second screw. The second screw is connected to a slider, and the slider is fixedly connected to a movable seat through the through slot. The workstation motor provides power for the rotation of the second screw, driving the slider to move along the axial direction of the second screw.

8. An automatic coffee machine with a visualized brewing process according to claim 7, characterized in that, The bracket is also provided with a translation guide part that cooperates with the slider. The translation guide part includes at least two first guide rods arranged parallel to the axis of the second screw. The slider is provided with a sliding hole that slides with the first guide rods. The lower end face of the mounting plate is provided with at least two second guide rods, each of which is parallel to the axis of the second screw and is not directly below the two working positions; the movable seat is provided with a rotating cylinder that slides with the second guide rods.

9. An automatic coffee machine with a visualized brewing process according to claim 1, characterized in that, The movable seat includes a seat plate, the front end of which extends below the through groove, and the extended end of the seat plate is provided with a connecting part; the connecting part is fixedly connected to the slider by fasteners; the rear end of the seat plate is provided with a mating interface that passes through the upper and lower end faces, for docking with the grinding station or the brewing station. The rear periphery of the seat plate extends downward to form a surrounding wall, which protrudes inward in a semi-circular shape at the interface to form a snap-fit ​​part; the lower edge of the cup mouth of the filter cup is recessed inward to form a slot; the filter cup is disassembled and engaged with the snap-fit ​​part of the movable seat through the slot. The filter cup is also provided with a magnetic key on the cup mouth end face. The induction switches on the two workstations are used to sense whether the magnetic key on the filter cup has moved to the corresponding workstation. The seat plate of the moving seat is placed between the magnetic key and the induction switch, and the thickness of the seat plate is less than the sensing distance of the induction switch.

10. A brewing method for an automatic coffee machine, applied to an automatic coffee machine with a visualized brewing process as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Initial setup: Place the moving base in the grinding station and install the filter cup on the moving base; start the grinding mechanism to grind the coffee beans into powder and output it into the cup cavity of the filter cup located in the grinding station; S2. Automatic station switching: The station drive device drives the moving seat to move the filter cup containing powder from the grinding station to the brewing station; when the induction switch set at the brewing station detects that the filter cup has moved into place, the station drive device stops working. S3. Two-stage adaptive powder pressing: S31. First stage of powder pressing: The powder pressing drive device drives the sliding seat of the powder pressing module and the cooking head to move downward as a whole until the cooking head contacts the powder surface inside the filter cup; S32. Second stage of powder pressing: The powder pressing drive device continues to drive the sliding seat to move downward. The sliding seat overcomes the preload of the elastic member and compresses the elastic member, causing axial relative displacement between the sliding seat and the cooking head. The elastic force generated by the compression of the elastic member is continuously applied to the powder through the cooking head to achieve uniform powder pressing that adapts to the amount of powder. S4. Water extraction: High-pressure hot water is supplied to the boiling head of the powder pressing mechanism. The water flows through the compacted powder layer to extract the powder. The extract flows into a container placed below the filter cup. S5. Reset and Cleaning: After extraction, the tamping drive unit drives the tamping module to rise and reset; the filter cup is removed from the moving base to clean the coffee grounds; the station drive unit drives the moving base to reset to the grinding station, waiting for the next brewing operation; S6. Milk foam making and output: According to the user's selection, the milk is foamed through the milk foaming mechanism and the milk foam is output to the container to be mixed with the extract.

Images