Automatic powder pressing device of bean grinder

Abstract

The utility model relates to the technical field of bean grinders, in particular to an automatic powder pressing device of a bean grinder, which comprises a bean grinding mechanism provided with a coffee powder outlet. A coffee powder inlet is formed in the automatic powder pressing mechanism; the two ends of the powder channel are fixedly connected with the coffee powder outlet and the coffee powder inlet respectively; and a blowing air channel is arranged between the powder channel and the automatic powder pressing mechanism. By means of the arrangement, the bean grinding mechanism and the automatic powder pressing mechanism are connected into a whole through the powder channel, the bean grinding mechanism can be in seamless butt joint with the automatic powder pressing mechanism after beans are ground, automation of bean grinding and powder pressing is achieved, use is convenient, labor is saved, and working efficiency is improved; moreover, the blowing air channel is arranged between the powder channel and the automatic powder pressing mechanism and can be used for blowing residual coffee powder in the powder channel into the automatic powder pressing mechanism, so that the coffee powder is discharged more sufficiently, and the taste of coffee is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of coffee grinder technology, and specifically to an automatic coffee grinder tamping device. Background Technology

[0002] Currently, most coffee grinders and tamping devices on the market are separate structures, or have a manual tamping mechanism. When making coffee after grinding, a separate tamping machine or manual tamping is required, which is cumbersome, labor-intensive, and inefficient.

[0003] Utility model patent CN215502592U discloses an automatic tamping coffee grinder, including a grinding mechanism comprising a grinding motor assembly and a downwardly inclined powder outlet channel; a powder receiving mechanism located below the discharge end of the powder outlet channel, comprising a limiting bracket, a powder receiving funnel, and a powder receiving switch, wherein the powder receiving funnel is detachably mounted on the limiting bracket and is activated by triggering the powder receiving switch; a tamping mechanism located above the powder receiving mechanism, comprising a plunger cylinder, a tamping plunger, a lifting motor, and a rotating motor, wherein the lifting motor controls the plunger cylinder to move up and down to open and close the discharge end of the powder outlet channel, the tamping plunger is mounted at the bottom of the plunger cylinder and can extend into the powder receiving funnel as the plunger cylinder descends, and the rotating motor drives the tamping plunger to rotate horizontally; and an electrical control component electrically connected to the powder receiving switch, the grinding mechanism, the lifting motor, and the rotating motor. The existing technology utilizes a grinding mechanism, a receiving mechanism, a tamping mechanism, and electronic control components to achieve seamless automatic processing of coffee beans in the grinding and tamping process. It is very convenient to use, saves labor, and improves work efficiency. However, the existing technology still has structural shortcomings. Its powder dispensing channel has poor dispensing effect and coffee powder is easily left on the inner wall, resulting in insufficient dispensing of coffee powder and ultimately affecting the taste of the coffee.

[0004] Therefore, there is still room for improvement and development in existing technologies. Utility Model Content

[0005] To address the problem that existing technologies suffer from poor feed distribution through the feed channel, resulting in bean powder residue on the inner wall and insufficient feed, ultimately affecting the taste of the coffee, this invention provides an automatic tamping device for coffee grinders.

[0006] To achieve the above objectives, the technical solution applied in this utility model is as follows:

[0007] An automatic tamping device for a coffee grinder includes a grinding mechanism with a coffee powder outlet; an automatic tamping mechanism with a coffee powder inlet; a powder channel with its two ends fixedly connected to the coffee powder outlet and coffee powder inlet, respectively; and a blowing duct between the powder channel and the automatic tamping mechanism. This design integrates the grinding mechanism and the automatic tamping mechanism, allowing for seamless connection after grinding, automating both grinding and tamping. This automates the process, is convenient, saves labor, and improves efficiency. Furthermore, the blowing duct between the powder channel and the automatic tamping mechanism allows residual coffee powder in the powder channel to be blown into the automatic tamping mechanism, ensuring more thorough coffee powder distribution without affecting the coffee's flavor.

[0008] According to the above scheme, a powder guiding cavity is formed inside the powder channel, and an air inlet communicating with the powder guiding cavity is provided on the powder channel; a powder receiving cavity is formed inside the automatic powder tamping mechanism, and an exhaust port communicating with the powder receiving cavity is provided on the automatic powder tamping mechanism. The air inlet, powder guiding cavity, powder receiving cavity, and exhaust port are sequentially connected to form a blowing air channel. With this configuration, after the coffee bean grinding mechanism grinds the beans, the coffee powder falls into the powder receiving cavity through the powder guiding cavity, and under the action of the blowing air channel, the coffee powder can be fully blown into the automatic powder tamping mechanism.

[0009] According to the above scheme, the powder channel is inclined between the grinding mechanism and the automatic tamping mechanism. The higher end of the powder channel has a powder inlet connected to the coffee powder outlet of the grinding mechanism, and the lower end has a powder outlet connected to the coffee powder inlet of the automatic tamping mechanism. The air inlet is located to one side of the powder inlet, and the exhaust outlet is located to one side of the coffee powder inlet. This arrangement, with the powder channel inclined between the grinding mechanism and the automatic tamping mechanism, improves the coffee powder dispensing effect after grinding.

[0010] According to the above scheme, the powder inlet and outlet are vertically located at both ends of the powder channel. The powder channel includes an arc-shaped upper shell and an arc-shaped bottom cover, which are fixedly connected. The air inlet is located on the arc-shaped upper shell, and the air outlet is correspondingly positioned on the arc-shaped bottom cover. This configuration improves the guiding effect when dispensing coffee powder; the dispensing effect can be controlled by the angle formed between the powder outlet and the arc-shaped bottom cover.

[0011] According to the above scheme, the automatic tamping mechanism includes a gearbox tamping assembly, a funnel, and a funnel support. The funnel support has a powder receiving cavity formed inside, with the coffee powder inlet and vent located at intervals on the funnel support. The funnel includes a powder bowl and a handle. The powder bowl is detachably mounted on the funnel support, and the gearbox tamping assembly is mounted on the funnel support, corresponding to the powder bowl. With this configuration, coffee powder enters the powder bowl through the powder channel and is then tamped into a cake by the gearbox tamping assembly. The thickness of the cake can be controlled by the distance between the powder outlet and the bottom of the powder bowl.

[0012] According to the above scheme, the gearbox tamping assembly includes a motor, a gearbox, a drive shaft, a slide cylinder, and a tamping plate. The motor output is fixedly connected to the gearbox, and the gearbox output is fixedly connected to the drive shaft. The motor drives the drive shaft to rotate through the gearbox. The slide cylinder is movably mounted on the drive shaft, and a travel limit component is provided between the slide cylinder and the funnel support. The tamping plate is detachably mounted on the slide cylinder, and the tamping plate is correspondingly arranged with the coffee bowl. With this configuration, when tamping coffee, the motor drives the drive shaft to rotate through the gearbox, and the drive shaft then drives the slide cylinder to move up and down, thereby tamping the coffee powder in the coffee bowl into a tamping plate.

[0013] According to the above scheme, the outer wall of the drive shaft is formed with an external thread, and the inner wall of the slide cylinder is provided with an internal thread that is threadedly connected to the external thread; a magnetic plate is fixed to the bottom of the slide cylinder through a magnetic plate mounting position, and a magnet is provided on the tamping plate that is magnetically connected to the magnetic plate. With this configuration, when the drive shaft rotates, it makes a threaded movement with the slide cylinder, causing the slide cylinder to move up and down, and driving the tamping plate to tamp the coffee powder in the coffee bowl.

[0014] According to the above scheme, the travel limiting component includes a contact plate on the slide cylinder and an upper travel micro switch and a lower travel micro switch on the funnel support. The upper travel micro switch and the lower travel micro switch are installed on the funnel support at an interval. This configuration allows the upper travel micro switch and the lower travel micro switch to control the travel of the slide cylinder up and down, resulting in better powder pressing effect.

[0015] According to the above scheme, a microswitch is fixed on the funnel support via a microswitch bracket, and a contact rod corresponding to the microswitch is movably mounted on the funnel support. With this configuration, when the powder bowl is assembled into position on the funnel support, pushing the contact rod triggers the microswitch, and the grinding mechanism begins operation.

[0016] According to the above scheme, reinforcing plates one and two are fixed to the outer wall of the funnel support by fixing bracket one and fixing bracket two, respectively. Reinforcing plate one is fixedly connected to the grinding mechanism through the grinding bracket. This arrangement makes the overall assembly more robust.

[0017] The beneficial effects of this utility model are:

[0018] This invention is designed to connect the grinding mechanism and the automatic tamping mechanism into one unit via a powder channel, allowing the grinding mechanism to seamlessly connect with the automatic tamping mechanism after grinding, thus automating both grinding and tamping. This design is convenient, saves labor, and improves work efficiency. Furthermore, by setting up a blowing duct between the powder channel and the automatic tamping mechanism, residual coffee powder in the powder channel can be blown into the automatic tamping mechanism, ensuring more thorough coffee powder distribution without affecting the coffee's taste. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the powder channel of this utility model;

[0022] Figure 4 This is a cross-sectional view of the powder channel of this utility model;

[0023] Figure 5 This is a schematic diagram of the funnel support of this utility model;

[0024] Figure 6 This is a cross-sectional view of the gearbox powder pressing assembly of this utility model;

[0025] Figure 7 This is a cross-sectional view of the slide tube of this utility model;

[0026] Figure 8 This is a schematic diagram of the powder pressing plate of this utility model;

[0027] Figure 9 This is a schematic diagram of the funnel of this utility model;

[0028] Figure 10 This is a schematic diagram of the material feeding process in working mode one;

[0029] Figure 11 This is a schematic diagram of the material blowing process in working mode one;

[0030] Figure 12 This is a schematic diagram of the material pressing process in working mode one;

[0031] Figure 13 This is a schematic diagram of material feeding and blowing in working mode two;

[0032] Figure 14 This is a schematic diagram of the material pressing process in working mode two.

[0033] In the picture:

[0034] 1. Grinding mechanism; 101. Coffee powder outlet; 2. Powder channel; 21. Powder inlet; 22. Air inlet; 23. Powder outlet; 24. Arc-shaped upper shell; 25. Arc-shaped bottom cover; 26. Powder guiding cavity; 3. Grinding support; 4. Reinforcing plate one; 5. Gearbox tamping assembly; 51. Motor; 52. Drive shaft; 53. External thread; 54. Gearbox; 6. Slide cylinder; 61. Internal thread; 62. Magnetic plate mounting position; 63. Contact plate; 7. Magnetic plate; 8. Fixed bracket one; 9. Fixed bracket two; 10. Micro switch; 11. Micro switch bracket; 12. Contact rod; 13. Funnel; 131. Coffee bowl; 132. Handle; 14. Reinforcing plate two; 15. Upper travel micro switch; 16. Lower travel micro switch; 17. Funnel bracket; 171. Exhaust port; 172. Coffee powder inlet; 173. Powder receiving chamber; 18. Tamper plate; 181. Magnet; 19. Coffee powder; 20. Gas. Detailed Implementation

[0035] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0036] like Figures 1 to 9 As shown, the automatic tamping device for a coffee grinder of this utility model includes a grinding mechanism 1 with a coffee powder outlet 101; an automatic tamping mechanism with a coffee powder inlet 172; and a powder channel 2, with its two ends fixedly connected to the coffee powder outlet 101 and the coffee powder inlet 172, respectively. A blowing duct is provided between the powder channel 2 and the automatic tamping mechanism. This configuration connects the grinding mechanism 1 and the automatic tamping mechanism into one unit via the powder channel 2, allowing the grinding mechanism 1 to seamlessly connect with the automatic tamping mechanism after grinding, thus automating grinding and tamping. This design is convenient, saves labor, and improves work efficiency. Furthermore, the blowing duct between the powder channel 2 and the automatic tamping mechanism can be used to blow residual coffee powder from the powder channel 2 into the automatic tamping mechanism, ensuring more thorough coffee powder distribution without affecting the coffee's taste.

[0037] Furthermore, the powder channel 2 has a powder guiding cavity 26 formed within it, and an air inlet 22 communicating with the powder guiding cavity 26 is provided on the powder channel 2; the automatic tamping mechanism has a powder receiving cavity 173 formed within it, and an exhaust port 171 communicating with the powder receiving cavity 173 is provided on the automatic tamping mechanism. The air inlet 22, the powder guiding cavity 26, the powder receiving cavity 173, and the exhaust port 171 are sequentially connected to form a blowing air channel. With this configuration, after the coffee grinding mechanism 1 grinds the coffee beans, the coffee powder falls into the powder receiving cavity 173 through the powder guiding cavity 26, and under the action of the blowing air channel, the coffee powder can be fully blown into the automatic tamping mechanism.

[0038] In practical applications, the air inlet 22 is connected to an external air blowing device or a blower, such as an air pump or a fan.

[0039] Furthermore, the powder channel 2 is inclinedly positioned between the grinding mechanism 1 and the automatic tamping mechanism. The higher end of the powder channel 2 has a powder inlet 21 connected to the coffee powder outlet 101 of the grinding mechanism 1, and the lower end has a powder outlet 23 connected to the coffee powder inlet 172 of the automatic tamping mechanism. The air inlet 22 is located to one side of the powder inlet 21, and the exhaust outlet 171 is located to one side of the coffee powder inlet 172. This arrangement, with the powder channel 2 inclined between the grinding mechanism 1 and the automatic tamping mechanism, improves the coffee powder dispensing effect after the grinding mechanism 1 grinds the beans.

[0040] Furthermore, the powder inlet 21 and the powder outlet 23 are vertically located at both ends of the powder channel 2. The powder channel 2 includes an arc-shaped upper shell 24 and an arc-shaped bottom cover 25, which are fixedly connected. The air inlet 22 is located on the arc-shaped upper shell 24, and the air outlet of the air inlet 22 is correspondingly arranged with the arc-shaped bottom cover 25. With this arrangement, when coffee powder is dispensed, it slides out along the arc-shaped bottom cover 25, resulting in better powder guiding effect. The powder dispensing effect can be controlled by the angle formed between the powder outlet 23 and the arc-shaped bottom cover 25.

[0041] In practical applications, the included angle between the powder outlet 23 and the arc-shaped bottom cover 25 is preferably 50°±10°; wherein, the arc-shaped upper shell 24 and the arc-shaped bottom cover 25 can be two separate accessories fixed to form the powder channel 2, or the arc-shaped upper shell 24 and the arc-shaped bottom cover 25 can be an integral structure to form the powder channel 2.

[0042] Furthermore, the automatic tamping mechanism includes a gearbox tamping assembly 5, a funnel 13, and a funnel support 17. The funnel support 17 has a powder receiving cavity 173 formed within it, and a coffee powder inlet 172 and an exhaust port 171 are spaced apart on the funnel support 17. The funnel 13 includes a powder bowl 131 and a handle 132. The powder bowl 131 is detachably mounted on the funnel support 17, and the gearbox tamping assembly 5 is mounted on the funnel support 17, corresponding to the powder bowl 131. With this configuration, coffee powder enters the powder bowl 131 through the powder channel 2 and is then tamped into a cake by the gearbox tamping assembly 5. The thickness of the cake can be controlled by the distance between the powder outlet 23 and the bottom of the powder bowl 131.

[0043] In practical applications, the distance between the powder outlet 23 and the bottom of the powder bowl 131 is preferably 60mm ± 10.

[0044] Furthermore, the gearbox tamping assembly 5 includes a motor 51, a gearbox 54, a drive shaft 52, a slide cylinder 6, and a tamping plate 18. The output end of the motor 51 is fixedly connected to the gearbox 54, and the output end of the gearbox 54 is fixedly connected to the drive shaft 52. The motor 51 drives the drive shaft 52 to rotate through the gearbox 54. The slide cylinder 6 is movably mounted on the drive shaft 52, and a travel limit component is provided between the slide cylinder 6 and the funnel support 17. The tamping plate 18 is detachably mounted on the slide cylinder 6, and the tamping plate 18 is correspondingly arranged with the coffee bowl 131. With this configuration, when tamping the coffee powder, the motor 51 drives the drive shaft 52 to rotate through the gearbox 54, and the drive shaft 52 then drives the slide cylinder 6 to move up and down, thereby tamping the coffee powder in the coffee bowl 131.

[0045] Furthermore, the outer wall of the drive shaft 52 is formed with an external thread 53, and the inner wall of the slide cylinder 6 is provided with an internal thread 61 that is threadedly connected to the external thread 53; a magnetic plate 7 is fixed to the bottom of the slide cylinder 6 through a magnetic plate mounting position 62, and a magnet 181 is provided on the tamping plate 18 that is magnetically connected to the magnetic plate 7. With this configuration, when the drive shaft 52 rotates, it makes a threaded movement with the slide cylinder 6, causing the slide cylinder 6 to move up and down, and driving the tamping plate 18 to tamp the coffee powder in the coffee bowl 131.

[0046] In practical applications, the powder pressing plate 18 is magnetically connected to the magnetic suction plate 7, which facilitates the subsequent disassembly and cleaning of the powder pressing plate 18.

[0047] Furthermore, the travel limiting component includes a contact plate 63 mounted on the slide cylinder 6 and an upper travel micro switch 15 and a lower travel micro switch 16 mounted on the funnel support 17. The upper travel micro switch 15 and the lower travel micro switch 16 are mounted vertically spaced on the funnel support 17. This configuration allows the upper travel micro switch 15 and the lower travel micro switch 16 to control the up-and-down movement of the slide cylinder 6, resulting in better powder pressing.

[0048] Furthermore, a micro switch 10 is fixed to the funnel support 17 via a micro switch bracket 11, and a contact rod 12 corresponding to the micro switch 10 is movably mounted on the funnel support 17. With this configuration, when the powder bowl 131 is assembled into position on the funnel support 17, pushing the contact rod 12 triggers the micro switch 10, and the grinding mechanism 1 begins operation.

[0049] Furthermore, reinforcing plates 114 and 14 are fixed to the outer wall of the funnel support 17 via fixing bracket 1 8 and fixing bracket 2 9. Reinforcing plate 14 is fixedly connected to the grinding mechanism 1 via the grinding support 3. This configuration makes the overall assembly more robust.

[0050] In practical applications, the first fixed bracket 8 and the second fixed bracket 9 are symmetrically located on the outer walls of the front and rear sides of the funnel support 17, and the first reinforcing plate 4 and the second reinforcing plate 14 are symmetrically located on the outer walls of the left and right sides of the funnel support 17.

[0051] Working principle of this utility model:

[0052] Working mode one, such as Figures 10 to 12 As shown, after the funnel 13 is assembled on the funnel support 17, the grinding mechanism 1 starts to work. The coffee powder 19 enters from the inlet 21 of the powder channel 2 and then falls naturally into the portafilter 131 through the outlet 23. The gas 20 enters from the air inlet 22 of the powder channel 2 and then exits from the exhaust port 171. During the flow of the gas 20, the coffee powder 19 remaining in the powder channel 2 can be fully blown out into the portafilter 131. After the grinding is completed, the gearbox tamping assembly 5 works, driving the slide 6 to move downward. The slide 6 drives the tamping plate 18 to tamp the coffee powder 19 in the portafilter 131 into a coffee cake.

[0053] Working mode two, such as Figure 13 and Figure 14 As shown, after the funnel 13 is assembled on the funnel support 17, the grinding mechanism 1 starts to work. The coffee powder 19 enters from the inlet 21 of the powder channel 2 and then falls naturally into the coffee bowl 131 through the outlet 23. At the same time, the gas 20 enters from the air inlet 22 of the powder channel 2 and then exits from the exhaust port 171. With the cooperation of the coffee powder 19 and the gas 20, the gas 20 blows the coffee powder 19 evenly into the coffee bowl 131. After the grinding is completed, the gearbox tamping assembly 5 works, driving the slide 6 to move downward. The slide 6 drives the tamping plate 18 to tamp the coffee powder 19 in the coffee bowl 131 into a coffee cake.

[0054] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims, and all of these forms are within the scope of protection of the present utility model.

Claims

1. An automatic tamping device for a coffee grinder, characterized in that, include: A coffee grinding mechanism (1) is provided with a coffee powder outlet (101); An automatic tamping mechanism is provided with a coffee powder inlet (172); The powder channel (2) is fixedly connected at both ends to the coffee powder outlet (101) and the coffee powder inlet (172) respectively; a blowing air channel is provided between the powder channel (2) and the automatic tamping mechanism.

2. The automatic tamping device for a coffee grinder according to claim 1, characterized in that: The powder channel (2) has a powder guiding cavity (26) formed inside, and the powder channel (2) is provided with an air inlet (22) connected to the powder guiding cavity (26); the automatic powder pressing mechanism has a powder receiving cavity (173) formed inside, and the automatic powder pressing mechanism is provided with an exhaust port (171) connected to the powder receiving cavity (173). The air inlet (22), the powder guiding cavity (26), the powder receiving cavity (173) and the exhaust port (171) are connected in sequence to form a blowing air channel.

3. The automatic tamping device for a coffee grinder according to claim 2, characterized in that: The powder channel (2) is inclined between the grinding mechanism (1) and the automatic tamping mechanism. The higher end of the powder channel (2) is provided with a powder inlet (21) that communicates with the coffee powder outlet (101) of the grinding mechanism (1), and the lower end of the powder channel (2) is provided with a powder outlet (23) that communicates with the coffee powder inlet (172) of the automatic tamping mechanism. The air inlet (22) is located on one side of the powder inlet (21), and the exhaust port (171) is located on one side of the coffee powder inlet (172).

4. The automatic tamping device for a coffee grinder according to claim 3, characterized in that: The powder inlet (21) and powder outlet (23) are vertically located at both ends of the powder channel (2). The powder channel (2) includes an arc-shaped upper shell (24) and an arc-shaped bottom cover (25). The arc-shaped upper shell (24) and the arc-shaped bottom cover (25) are fixedly connected. The air inlet (22) is located on the arc-shaped upper shell (24). The air outlet of the air inlet (22) is correspondingly set with the arc-shaped bottom cover (25).

5. The automatic tamping device for a coffee grinder according to claim 3, characterized in that: The automatic tamping mechanism includes a gearbox tamping assembly (5), a funnel (13), and a funnel support (17). The funnel support (17) has a powder receiving cavity (173) formed inside. The coffee powder inlet (172) and the vent (171) are located on the funnel support (17) at intervals. The funnel (13) includes a powder bowl (131) and a handle (132). The powder bowl (131) is detachably installed on the funnel support (17). The gearbox tamping assembly (5) is installed on the funnel support (17). The gearbox tamping assembly (5) is correspondingly arranged with the powder bowl (131).

6. The automatic tamping device for a coffee grinder according to claim 5, characterized in that: The gearbox powder pressing assembly (5) includes a motor (51), a gearbox (54), a drive shaft (52), a slide cylinder (6), and a powder pressing plate (18). The output end of the motor (51) is fixedly connected to the gearbox (54), and the output end of the gearbox (54) is fixedly connected to the drive shaft (52). The motor (51) drives the drive shaft (52) to rotate through the gearbox (54). The slide cylinder (6) is movably mounted on the drive shaft (52), and a travel limit assembly is provided between the slide cylinder (6) and the funnel support (17). The powder pressing plate (18) is detachably mounted on the slide cylinder (6), and the powder pressing plate (18) is correspondingly arranged with the powder bowl (131).

7. The automatic tamping device for a coffee grinder according to claim 6, characterized in that: The outer wall of the drive shaft (52) is formed with an external thread (53), and the inner wall of the slide cylinder (6) is provided with an internal thread (61) that is threadedly connected to the external thread (53); a magnetic plate (7) is fixed on the bottom of the slide cylinder (6) through a magnetic plate mounting position (62), and a magnet (181) is provided on the powder pressing plate (18) that is magnetically connected to the magnetic plate (7).

8. The automatic tamping device for a coffee grinder according to claim 6, characterized in that: The travel limit assembly includes a contact plate (63) on the slide (6) and an upper travel micro switch (15) and a lower travel micro switch (16) on the funnel support (17). The upper travel micro switch (15) and the lower travel micro switch (16) are installed on the funnel support (17) at an interval between the upper and lower parts.

9. The automatic tamping device for a coffee grinder according to claim 5, characterized in that: A micro switch (10) is fixed on the funnel support (17) via a micro switch bracket (11), and a contact rod (12) corresponding to the micro switch (10) is movably provided on the funnel support (17); when the powder bowl (131) is assembled on the funnel support (17) in place, the contact rod (12) is pushed to trigger the micro switch (10).

10. An automatic tamping device for a coffee grinder according to claim 5, characterized in that: The funnel support (17) has a first reinforcing plate (4) and a second reinforcing plate (14) fixed on its outer wall by a first fixed bracket (8) and a second fixed bracket (9). The first reinforcing plate (4) is fixedly connected to the grinding mechanism (1) by a grinding support (3).

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