Automatic powder feeding mechanism of coffee machine

Abstract

The utility model discloses an automatic powder feeding mechanism of a coffee machine, which belongs to the technical field of coffee machines and comprises a shell with a communication hole formed in the bottom surface, a positioning component used for fixing a coffee handle is arranged below the communication hole, a mounting frame is movably arranged in the shell, a powder adding component and a powder pressing component are fixedly mounted on the mounting frame, and the powder adding component and the powder pressing component are arranged in the shell. And a first driving assembly for driving the mounting frame to move is arranged in the shell. According to the automatic powder feeding mechanism of the coffee machine, the mounting frame is driven to move through the first driving assembly, so that switching between the powder adding assembly and the powder pressing assembly over the communicating hole is achieved, rotation of the pressing block is achieved through the rotating assembly, and downward movement of the moving plate and the pressing block is achieved in cooperation with the second driving assembly; a stroke is provided for rotary powder distribution of the pressing block through cooperation of the sliding hole and the extending block, so that powder adding, powder distribution and powder pressing are automatically completed, compared with an existing device, the problems that manual operation is needed, and the operation is troublesome are solved, the coffee powder feeding efficiency is improved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] This utility model belongs to the field of coffee machine technology, and in particular relates to an automatic coffee powder feeding mechanism for coffee machines. Background Technology

[0002] Before brewing coffee, three steps are required: adding coffee grounds, distributing the grounds, and tamping. Distributing the grounds ensures even distribution within the portafilter, facilitating subsequent tamping. A relatively consistent distributing process involves rotating the tamper to smooth the grounds and then lightly compacting them with its own weight. Tamping, on the other hand, involves applying pressure with the tamper to further compact the grounds. During tamping, the tamper should not be rotated, as this can create channeling in the coffee grounds and negatively impact the brewing results. In coffee machines, these three steps are typically performed manually before brewing, which is cumbersome. Some fully automatic coffee machines lack the distributing step, simply adding the grounds and tamping them directly, resulting in suboptimal brewing quality.

[0003] To address this issue, we propose an automatic coffee powder feeding mechanism for coffee machines. Utility Model Content

[0004] The purpose of this invention is to solve the problem of cumbersome operation in the existing technology, and to propose an automatic coffee powder feeding mechanism for coffee machines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic coffee powder feeding mechanism includes a housing with a connecting hole on the bottom surface, a positioning component for fixing a coffee handle is provided below the connecting hole, a mounting bracket is movably provided inside the housing, a powder feeding component and a powder tamping component are fixedly installed on the mounting bracket, and a first driving component for driving the mounting bracket to move is provided inside the housing.

[0007] The powder pressing assembly includes a fixed cylinder fixedly mounted on a mounting frame. A movable plate is slidably disposed inside the fixed cylinder. A second driving assembly is disposed inside the fixed cylinder to drive the movable plate to move up and down. A pressing block is movably disposed below the movable plate. A sliding hole is opened on the top surface of the pressing block. A fixed rod extending into the sliding hole is fixedly connected to the bottom surface of the movable plate. An extension block extends outward from the bottom end of the fixed rod, and the side of the extension block is attached to the side wall of the sliding hole. An annular limiting plate that matches the extension block is fixedly disposed at the top of the sliding hole.

[0008] The movable plate is provided with a rotating assembly that drives the pressure block to rotate around the extension block, and a pressure sensor that matches the extension block is fixedly installed on the bottom wall of the sliding hole.

[0009] Preferably, the top surface of the pressure block is provided with an annular groove, the rotating assembly includes a transmission gear fixedly installed on the side wall of the annular groove, a drive motor is fixedly installed on one side of the top surface of the moving plate, the output shaft of the drive motor extends through into the annular groove and is fixedly fitted with the drive gear, and the drive gear meshes with the transmission gear.

[0010] Preferably, the thickness of the transmission gear is greater than the sum of the thickness of the drive gear and the maximum stroke of the extension block.

[0011] Preferably, a counterweight is fixedly connected to the side of the top surface of the movable plate away from the drive motor.

[0012] Preferably, the bottom surface of the pressure block is provided with a plurality of concentric circular protrusions.

[0013] Preferably, the housing has a coffee bean storage chamber located above the mounting frame, and the powder feeding assembly includes a grinding cylinder assembly fixedly installed on the side of the mounting frame away from the fixed cylinder, and the grinding cylinder assembly is connected to the coffee bean storage chamber by a flexible tube.

[0014] In summary, the technical effects and advantages of this utility model are as follows: The automatic powder feeding mechanism of this coffee machine drives the mounting bracket to move through the first drive component, thereby realizing the switching between the powder feeding component and the powder tamping component directly above the connecting hole. The rotating component realizes the rotation of the tamping block, and the second drive component realizes the downward movement of the moving plate and the tamping block. The sliding hole and the extension block provide the stroke for the rotation and powder distribution of the tamping block, thereby realizing the automatic completion of powder feeding, powder distribution and powder tamping. Compared with the existing device, it avoids the problem of manual operation, which is more troublesome, improves the efficiency of coffee powder feeding and reduces the workload of personnel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a cross-sectional front view of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 for Figure 3 A magnified view of point A during the pressing process;

[0020] Figure 6 This is a schematic cross-sectional view of the transmission gear in this utility model;

[0021] Figure 7This is a cross-sectional front view of the present invention during powder addition.

[0022] In the diagram: 1. Outer shell; 2. Connecting hole; 3. Coffee handle; 4. Positioning assembly; 5. Mounting bracket; 6. First drive assembly; 7. Fixed cylinder; 8. Moving plate; 9. Second drive assembly; 10. Pressing block; 11. Sliding hole; 12. Fixed rod; 13. Extension block; 14. Limiting plate; 15. Pressure sensor; 16. Annular groove; 17. Transmission gear; 18. Drive motor; 19. Drive gear; 20. Counterweight; 21. Protrusion; 22. Coffee bean storage chamber; 23. Grinding cylinder assembly; 24. Hose. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-3 An automatic coffee maker powder feeding mechanism includes a housing 1 with a connecting hole 2 on its bottom surface. Below the connecting hole 2 is a positioning component 4 for fixing a coffee handle 3. The positioning component 4 is existing technology; a common solution is to use a threaded locking block that engages with the coffee handle 3. Since this is common in the coffee maker industry, it will not be elaborated further. Inside the housing 1, a mounting bracket 5 is movably mounted. A powder feeding component and a powder tamping component are fixedly mounted on the mounting bracket 5. Inside the housing 1, a first driving component 6 is provided to move the mounting bracket 5.

[0025] Reference Figure 4-6 The powder pressing assembly includes a fixed cylinder 7 fixedly mounted on the mounting frame 5. A movable plate 8 is slidably provided inside the fixed cylinder 7. A second drive assembly 9 is provided inside the fixed cylinder 7 to drive the movable plate 8 to move up and down. A pressing block 10 is movably provided below the movable plate 8. A sliding hole 11 is provided on the top surface of the pressing block 10. A fixed rod 12 extending into the sliding hole 11 is fixedly connected to the bottom surface of the movable plate 8. An extension block 13 extends outward from the bottom end of the fixed rod 12, and the side of the extension block 13 is attached to the side wall of the sliding hole 11. An annular limiting plate 14 that cooperates with the extension block 13 is fixedly provided at the top of the sliding hole 11.

[0026] Both the first drive assembly 6 and the second drive assembly 9 can use electric actuators. Since electric actuators are existing technology and are quite common, their principles and internal structures will not be described in detail.

[0027] The movable plate 8 is equipped with a rotating assembly that drives the pressure block 10 to rotate around the extension block 13, and a pressure sensor 15 that cooperates with the extension block 13 is fixedly installed on the bottom wall of the sliding hole 11. The pressure sensor 15 is existing technology and is quite common, so its principle and internal structure will not be described in detail.

[0028] The automatic coffee maker's powder feeding mechanism, when in use, first fixes the coffee portafilter 3 and the powder container directly below the connecting hole 2 using the positioning component 4. At this time, the powder feeding component is positioned directly above the connecting hole 2, and then powder can be added to the powder container in the coffee portafilter 3. Figure 7 .

[0029] After the coffee powder is added, the first drive assembly 6 pushes the mounting bracket 5 horizontally until the tamping assembly is directly above the connecting hole 2. At this time, the rotating assembly drives the tamping block 10 to rotate, while the second drive assembly 9 drives the moving plate 8 to move downwards. During this process, the extension block 13 adheres to the limiting plate 14. This continues until the bottom surface of the tamping block 10 adheres to the coffee powder. The tamping block 10 then continues to rotate and move downwards, spreading the coffee powder evenly. The tamping block 10 continues to move downwards until the coffee powder lifts it up. At this time, the moving plate 8 continues to move downwards while the tamping block 10 remains stationary. The extension block 13 moves downwards within the sliding hole 11 until the bottom surface of the extension block 13 adheres to the pressure sensor 15, thus completing the powder distribution step. Figure 5 .

[0030] After the powder is dispensed, the rotating component stops, and the moving plate 8 continues to move downward through the second drive component 9 until the pressure sensor 15 reaches the specified pressure value, thus completing the powder dispensing step. At this time, the moving plate 8 is driven upward to reset through the second drive component 9, and the coffee portafilter 3 is removed from the positioning component 4, thus completing all the powder dispensing steps of the mechanism.

[0031] Reference Figure 4-6 The top surface of the pressure block 10 is provided with an annular groove 16. The rotating assembly includes a transmission gear 17 fixedly installed on the side wall of the annular groove 16. A drive motor 18 is fixedly installed on one side of the top surface of the moving plate 8. The output shaft of the drive motor 18 extends through into the annular groove 16 and is fixedly fitted with a drive gear 19. The drive gear 19 meshes with the transmission gear 17. The drive motor 18 drives the drive gear 19 to rotate, which, in conjunction with the meshing transmission gear 17, enables the pressure block 10 to rotate.

[0032] The thickness of the transmission gear 17 is greater than the sum of the thickness of the drive gear 19 and the maximum stroke of the extension block 13. This ensures that the transmission gear 17 can always mesh with the drive gear 19 during the up-and-down movement of the extension block 13, avoiding the problem of disengagement and subsequent difficulty in meshing, thus improving operational stability.

[0033] A counterweight 20 is fixedly connected to the top surface of the moving plate 8 away from the drive motor 18. The counterweight 20 avoids uneven force on the moving plate 8 due to the weight of the drive motor 18, thereby improving the coffee powder feeding effect and the service life of the device.

[0034] Reference Figure 3The bottom surface of the tamping block 10 is fixed with multiple concentric circle protrusions 21. The protrusions 21 make the surface of the coffee powder present a concentric circle pattern after the coffee powder is coated, thus improving the quality of subsequent coffee brewing.

[0035] Reference Figure 7 The outer casing 1 contains a coffee bean storage chamber 22 located above the mounting bracket 5. The powder feeding assembly includes a grinding cylinder assembly 23 fixedly mounted on the side of the mounting bracket 5 away from the fixed cylinder 7. The grinding cylinder assembly 23 is connected to the coffee bean storage chamber 22 by a flexible hose 24. The grinding cylinder assembly 23 is existing technology, including a grinding motor, grinding blocks, and a grinding cylinder, and is commonly used in coffee machines and coffee grinding. Its principle will not be described in detail. Coffee beans in the coffee bean storage chamber 22 enter the grinding cylinder assembly 23 through the flexible hose 24, are ground by the grinding cylinder assembly 23, and then fall into the portafilter 3. Bending of the flexible hose 24 caused by the movement of the mounting bracket 5 will not affect the falling of coffee beans.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic coffee powder feeding mechanism for a coffee machine, comprising a housing (1) with a communicating hole (2) on its bottom surface, characterized in that, Below the connecting hole (2) is a positioning component (4) for fixing the coffee handle (3). Inside the outer shell (1) is a mounting bracket (5). A powder feeding component and a powder pressing component are fixedly installed on the mounting bracket (5). Inside the outer shell (1) is a first driving component (6) for driving the mounting bracket (5) to move. The powder pressing assembly includes a fixed cylinder (7) fixedly installed on the mounting frame (5). A movable plate (8) is slidably provided inside the fixed cylinder (7). A second driving assembly (9) is provided inside the fixed cylinder (7) to drive the movable plate (8) to move up and down. A pressing block (10) is movably provided below the movable plate (8). A sliding hole (11) is provided on the top surface of the pressing block (10). A fixed rod (12) extending into the sliding hole (11) is fixedly connected to the bottom surface of the movable plate (8). An extension block (13) extends outward from the bottom end of the fixed rod (12), and the side of the extension block (13) is attached to the side wall of the sliding hole (11). An annular limiting plate (14) that cooperates with the extension block (13) is fixedly provided at the top of the sliding hole (11). The movable plate (8) is provided with a rotating assembly that drives the pressure block (10) to rotate around the extension block (13), and a pressure sensor (15) that cooperates with the extension block (13) is fixedly installed on the bottom wall of the sliding hole (11).

2. The automatic coffee powder feeding mechanism for a coffee machine according to claim 1, characterized in that, The top surface of the pressure block (10) is provided with an annular groove (16). The rotating assembly includes a transmission gear (17) fixedly installed on the side wall of the annular groove (16). A drive motor (18) is fixedly installed on one side of the top surface of the moving plate (8). The output shaft of the drive motor (18) extends through into the annular groove (16) and is fixedly fitted with a drive gear (19). The drive gear (19) meshes with the transmission gear (17).

3. The automatic coffee powder feeding mechanism for a coffee machine according to claim 2, characterized in that, The thickness of the transmission gear (17) is greater than the sum of the thickness of the drive gear (19) and the maximum stroke of the extension block (13).

4. The automatic coffee powder feeding mechanism for a coffee machine according to claim 2, characterized in that, A counterweight (20) is fixedly connected to the top surface of the movable plate (8) away from the drive motor (18).

5. The automatic coffee powder feeding mechanism for a coffee machine according to claim 1, characterized in that, The bottom surface of the pressure block (10) is fixed with a plurality of concentric circular protrusions (21).

6. The automatic coffee powder feeding mechanism for a coffee machine according to claim 1, characterized in that, The outer casing (1) has a coffee bean storage chamber (22) located above the mounting frame (5) inside. The powder feeding assembly includes a grinding cylinder assembly (23) fixedly installed on the side of the mounting frame (5) away from the fixed cylinder (7). The grinding cylinder assembly (23) and the coffee bean storage chamber (22) are connected by a hose (24).

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