Bean grinding device and adjusting method thereof

Abstract

The invention discloses a bean grinding device and an adjusting method thereof, and belongs to the technical field of bean grinding, the bean grinding device is provided with an initial gear and a target gear, and the bean grinding device is provided with a movable fixed grinding wheel; the adjusting method comprises the following steps that when an initial gear is smaller than a target gear, a preset gear and a third moving position corresponding to the preset gear are determined according to the target gear, and a fixed grinding wheel is moved to a second moving position corresponding to the target gear from a first moving position corresponding to the initial gear; moving the fixed grinding wheel from a second moving position corresponding to the target gear to a third moving position corresponding to the preset gear; and the fixed grinding wheel is moved to the second moving position corresponding to the target gear from the third moving position corresponding to the preset gear. The purpose of setting the preset gear is to eliminate the clearance of the fixed grinding wheel, so that the bean grinding device can grind powder with consistent thickness in the gear adjusting process.

Description

Technical Field

[0001] The present invention relates to the technical field of bean grinding, and in particular to a bean grinding device and an adjustment method thereof. Background Art

[0002] At present, with the development of society and the improvement of people's living standards and life tastes, coffee as a beverage is becoming more and more popular. Moreover, people prefer coffee made from freshly ground coffee beans, so bean grinders or coffee machines with bean grinding devices are becoming more and more popular among consumers.

[0003] The bean grinding device has the function of adjusting the coarseness of coffee powder, and coffee powder has different coarseness standards in different brewing processes and brewing utensils. The bean grinding device generally includes a movable grinding wheel, a fixed grinding wheel and an adjustment mechanism. The fixed grinding wheel is arranged outside the movable grinding wheel, and a grinding chamber is formed between the fixed grinding wheel and the movable grinding wheel. The adjustment mechanism is used to adjust the gap between the fixed grinding wheel and the movable grinding wheel, thereby adjusting the size of the grinding chamber, so that the bean grinding device can adjust the coarseness of the powder during the grinding operation.

[0004] However, in the existing bean grinding device, the adjustment mechanism has the function of adjusting the powder from coarse to fine or from fine to coarse. For example, the initial gear is five, and it needs to be adjusted to six, and the powder is adjusted from fine to coarse. However, the coarseness of the powder ground by the bean grinding device is inconsistent, resulting in poor stability of the bean grinding device when adjusting the coarseness. Summary of the invention

[0005] The purpose of the present invention is to improve the problem of inconsistent powder coarseness when adjusting the coarseness of the existing bean grinding device, and to provide a bean grinding device and an adjustment method thereof.

[0006] After research, it was found that the reason why the powder produced by the grinding device is inconsistent after the gear adjustment is that the two adjustment parts are threaded, and there is a certain gap between the external thread and the internal thread. The gap is due to the matching tolerance generated when the workpiece is processed. This matching tolerance exists in reality. Although the gap value is small, the adjustment distance of a single gear is also small when grinding powder. Generally, the adjustment distance of a single gear is smaller than the value of the gap; therefore, when the gear is adjusted, the gap causes a virtual position phenomenon when the gear is adjusted. Since the upper and lower positions of the moving grinding wheel are fixed, the virtual position causes the upper and lower positions of the fixed grinding wheel to be uncertain. If the fixed grinding wheel is at the top, the size of the grinding chamber is consistent, and the coarseness of the ground powder is consistent; if the fixed grinding wheel is close to the moving grinding wheel, when the moving grinding wheel rotates, the powder or coffee beans squeeze the fixed grinding wheel to move to the top and eliminate the virtual position.

[0007] In actual use of the bean grinding device, due to the existence of this virtual position, after the adjustment mechanism adjusts the gear position, the fixed grinding wheel does not move to the topmost position. The size of the bean grinding chamber needs to be rotated by the moving grinding wheel. After the moving grinding wheel rotates for a certain period of time, the moving grinding wheel squeezes the fixed grinding wheel through the coffee beans, causing the fixed grinding wheel to move to the topmost position and eliminate the virtual position. However, the bean grinding device has a short grinding time and the moving grinding wheel rotates at a fast speed. As a result, in the process of eliminating the virtual position, when the fixed grinding wheel has a virtual position, the powder ground by the bean grinding device is finer. After the virtual position of the fixed grinding wheel is eliminated, the powder ground by the bean grinding device is coarser. Therefore, this virtual position is the main reason for the inconsistency of the powder coarseness when the bean grinding device adjusts the coarseness.

[0008] The technical solutions to achieve the above objectives include the following:

[0009] A method for adjusting a bean grinding device, wherein the bean grinding device has an initial gear position and a target gear position, and the bean grinding device has a movable fixed grinding wheel;

[0010] The adjustment method comprises the following steps: when the initial gear position is smaller than the target gear position, determining the preset gear position and the third moving position corresponding to the preset gear position according to the target gear position, and moving the fixed grinding wheel from the first moving position corresponding to the initial gear position to the second moving position corresponding to the target gear position;

[0011] Moving the fixed grinding wheel from a second moving position corresponding to the target gear position to a third moving position corresponding to the preset gear position;

[0012] The fixed grinding wheel is moved from a third moving position corresponding to a preset gear position to a second moving position corresponding to a target gear position.

[0013] In one embodiment, when the initial gear position is greater than the target gear position, the fixed grinding wheel is moved from a first moving position corresponding to the initial gear position to a second moving position corresponding to the target gear position.

[0014] In one embodiment, the gap between two adjacent thread surfaces is greater than the distance that the fixed grinding wheel moves in a single gear, and the preset gear and the third moving position corresponding to the preset gear are determined according to the target gear, including:

[0015] The target gear is increased by a preset gear difference to obtain a preset gear, wherein the preset gear difference is at least 4 gears;

[0016] The preset gear difference is multiplied by the distance the fixed grinding wheel moves in a single gear to obtain the moving distance;

[0017] The moving distance is increased at the second moving position corresponding to the target gear position to obtain a third moving position corresponding to the preset gear position.

[0018] In one embodiment, the bean grinding device includes a plurality of light holes, and the plurality of light holes are evenly distributed around the fixed grinding wheel. The calculation formula for the moving distance of the fixed grinding wheel corresponding to a single gear position is: L = P / S;

[0019] Among them, P is the pitch; S is the number of light holes.

[0020] In one embodiment, the bean grinding device has a minimum fine adjustment gear and a maximum coarse adjustment gear, there are multiple gears between the minimum fine adjustment gear and the maximum coarse adjustment gear, the initial gear and the target gear are each one of the multiple gears, and the preset gear is a multiple of a single gear.

[0021] The present invention further provides a bean grinding device, comprising a support frame, a driving mechanism, a movable grinding wheel, a fixed grinding wheel, and an adjusting mechanism, wherein the driving mechanism is mounted on the support frame, the movable grinding wheel is mounted on the output end of the driving mechanism, the movable grinding wheel is movably arranged in the support frame, the fixed grinding wheel is sleeved outside the movable grinding wheel, and a bean grinding chamber is formed between the outer wall of the movable grinding wheel and the fixed grinding wheel;

[0022] The adjusting mechanism is installed on the supporting frame, and the fixed grinding wheel is installed at the output end of the adjusting mechanism. The fixed grinding wheel has a first moving position and a second moving position. The first moving position corresponds to an initial gear position, and the second moving position corresponds to a target gear position. When the initial gear position is smaller than the target gear position, the fixed grinding wheel has a third moving position, and the third moving position corresponds to a preset gear position determined according to the target gear position.

[0023] In one embodiment, the adjustment mechanism includes a second driving member, a second transmission assembly, a first adjustment member, a second adjustment member, and a photoelectric switch. The second driving member is mounted on a support frame. The first end of the second transmission assembly is mounted on an output end of the second driving member. The first adjustment member is fixed to the second end of the second transmission assembly. The first adjustment member is in transmission cooperation with the second adjustment member. The second adjustment member is sleeved on the outside of the fixed grinding wheel.

[0024] The second transmission component is provided with a plurality of light-through holes, which are equidistantly distributed along the circumference of the first adjusting member; the photoelectric switch is electrically connected to the second driving member, and the photoelectric switch includes a bracket, a transmitter, and a receiver. The bracket is installed on a support frame, the bracket is U-shaped, and the bracket has a notch. The transmitter and the receiver are respectively installed at both ends of the bracket, the second transmission component is at least partially located at the notch, and the light-through hole of the second transmission component is arranged between the transmitter and the receiver.

[0025] In one embodiment, the first adjusting member is sleeved on the outside of the second adjusting member, and the inner wall of the first adjusting member is threadedly connected to the outer wall of the second adjusting member;

[0026] The second adjusting member is sleeved on the outside of the supporting frame, the supporting frame is provided with a guide block, the second adjusting member has a guide groove, the guide block is at least partially arranged in the guide groove and abuts against the inner wall of the second adjusting member.

[0027] In one embodiment, the second transmission assembly includes a second drive shaft, a second drive gear shaft, a third transmission wheel, and a fourth transmission wheel. The second drive shaft is installed on the output end of the second drive member, the second drive gear shaft is rotatably disposed on the support frame, the second drive gear shaft is in transmission cooperation with the second drive shaft, the third transmission wheel is sleeved on the outside of the second drive gear shaft, the fourth transmission wheel is sleeved on the outside of the first adjustment member, and the third transmission wheel is meshed with the fourth transmission wheel.

[0028] In one embodiment, the driving mechanism includes a first driving shaft, a first driving member, and a first transmission assembly, and the first transmission assembly includes a first driving gear shaft, a first transmission wheel, a second transmission wheel, and a transmission shaft;

[0029] The first driving member is mounted on a supporting frame, the first driving shaft is mounted on an output end of the first driving member, the first driving gear shaft is rotatably disposed on the supporting frame, and the first driving gear shaft is in transmission cooperation with the first driving shaft, the first transmission wheel is sleeved on the outside of the first driving gear shaft, the second transmission wheel is mounted on a first end of the transmission shaft, the transmission shaft is rotatably disposed on the supporting frame, the movable grinding wheel is mounted on a second end of the transmission shaft, and the first transmission wheel is meshed with the second transmission wheel.

[0030] The technical solution provided by the present invention has the following advantages and effects:

[0031] In each adjustment of the bean grinding device, if the target gear is set to adjust from fine to coarse, then the initial gear is smaller than the target gear, and the initial gear needs to be adjusted to coarse first. This process is the adjustment of the preset gear, and at this time the fixed grinding wheel has a third moving position. Therefore, first, the fixed grinding wheel needs to be moved from the first moving position corresponding to the initial gear to the second moving position corresponding to the target gear; secondly, the fixed grinding wheel needs to be moved from the second moving position corresponding to the target gear to the third moving position corresponding to the preset gear; and again, the fixed grinding wheel needs to be moved from the third moving position corresponding to the preset gear to the second moving position corresponding to the target gear. The purpose of setting the preset gear is to eliminate the virtual position of the fixed grinding wheel, so that the bean grinding device can grind powder of uniform coarseness and fineness when adjusting the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings herein show specific examples of the technical solutions described in the present invention, and together with the specific implementation methods, constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present invention.

[0033] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0034] Figure 1 Schematic diagram of a bean grinding device according to an embodiment of the present invention Figure 1 ;

[0035] Figure 2 Schematic diagram of a bean grinding device according to an embodiment of the present invention Figure 2 ;

[0036] Figure 3 is a schematic diagram of a first transmission assembly and a second transmission assembly in one embodiment of the present invention;

[0037] Figure 4 is a schematic diagram of a driving mechanism in one embodiment of the present invention;

[0038] Figure 5 is a cross-sectional view of a bean grinding device in one embodiment of the present invention;

[0039] Figure 6 is a partial front view of a bean grinding device in one embodiment of the present invention;

[0040] Figure 7 In one embodiment of the present invention Figure 6 AA section view;

[0041] Figure 8 In one embodiment of the present invention Figure 5 A magnified image of point A;

[0042] Fig. 9 In one embodiment of the present invention Figure 5 The enlarged view of point B;

[0043] Fig.10 In one embodiment of the present invention Figure 7 Enlarged view of point C;

[0044] Fig.11 is a cross-sectional view of a photoelectric switch in one embodiment of the present invention Figure 1 ;

[0045] Fig.12 is a cross-sectional view of a photoelectric switch in one embodiment of the present invention Figure 2 ;

[0046] Fig.13 is a schematic diagram of a second adjusting member in one embodiment of the present invention;

[0047] Fig.14 is a logical schematic diagram of different gears in an adjustment method in one embodiment of the present invention;

[0048] Description of reference numerals:

[0049] 100. Bean grinding device;

[0050] 1. Support frame; 11. Powder guide housing; 111. Powder outlet; 12. Guide block;

[0051] 2. Driving mechanism; 21. First driving member; 211. First driving shaft; 22. First transmission assembly; 221. First driving gear shaft; 222. First transmission wheel; 223. Second transmission wheel; 224. Transmission shaft; 23. Moving grinding wheel; 24. Fixed grinding wheel; 25. Grinding chamber;

[0052] 3. Adjustment mechanism; 31. Second driving member; 311. Second driving shaft; 32. Second transmission assembly; 321. Second driving gear shaft; 322. Third transmission wheel; 323. Fourth transmission wheel; 3231. Light hole; 3232. Light shielding part; 324. First adjustment member; 3241. Internal thread; 325. Second adjustment member; 3251. Material trough; 3252. External thread; 3253. Guide groove; 326. Support shaft; 327. Fifth transmission wheel;

[0053] 33. Photoelectric switch; 331. Bracket; 332. Transmitter; 333. Receiver. DETAILED DESCRIPTION

[0054] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0055] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0056] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0057] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0058] The research found that: Fig.10As shown, the reason why the powder ground by the bean grinding device 100 is inconsistent in coarseness and fineness after the gear adjustment is that the two adjustment parts are threaded, and there is a certain gap Y between the external thread 3252 and the internal thread 3241. The gap Y is due to the matching tolerance generated when the workpiece is processed, and this matching tolerance exists in reality. Although the value of the gap Y is small, the adjustment distance of a single gear is also small during grinding. Generally, the adjustment distance of a single gear is smaller than the value of the gap Y; therefore, during the gear adjustment, the gap Y causes a virtual position phenomenon during the gear adjustment. Since the upper and lower positions of the moving grinding wheel 23 are fixed, the virtual position causes the upper and lower positions of the fixed grinding wheel 24 to be uncertain. If the fixed grinding wheel 24 is at the top, the size of the bean grinding chamber 25 is consistent, and the coarseness and fineness of the ground powder is consistent; if the fixed grinding wheel 24 is close to the moving grinding wheel 23, when the moving grinding wheel 23 rotates, the fixed grinding wheel 24 is pressed to the top by the powder or coffee beans, and the virtual position is eliminated after it is away from the moving grinding wheel 23.

[0059] In actual use of the bean grinding device 100, due to the existence of the virtual position, after the adjustment mechanism 3 adjusts the gear position, the fixed grinding wheel 24 does not move to the topmost position, and the size of the bean grinding chamber 25 needs to be adjusted by the rotation of the movable grinding wheel 23. After the movable grinding wheel 23 rotates for a certain period of time, the movable grinding wheel 23 squeezes the fixed grinding wheel 24 through the coffee beans, so that the fixed grinding wheel 24 moves to the topmost position and eliminates the virtual position. However, the bean grinding device 100 has a short grinding time and the rotating speed of the movable grinding wheel 23 is fast. As a result, in the process of eliminating the virtual position, when the fixed grinding wheel 24 has a virtual position, the powder ground by the bean grinding device 100 is finer. After the virtual position of the fixed grinding wheel 24 is eliminated, the powder ground by the bean grinding device 100 is coarser. Therefore, the virtual position is the main reason for the inconsistency of the powder coarseness when the bean grinding device 100 adjusts the coarseness.

[0060] To this end, the present invention proposes a method for adjusting a bean grinding device 100, comprising the following steps: the bean grinding device 100 has an initial gear position and a target gear position, and the bean grinding device 100 has a movable fixed grinding wheel 24;

[0061] The adjustment method includes the following steps:

[0062] Step 1: when the initial gear position is smaller than the target gear position, the preset gear position and the third moving position corresponding to the preset gear position are determined according to the target gear position, and the fixed grinding wheel 24 is moved from the first moving position corresponding to the initial gear position to the second moving position corresponding to the target gear position;

[0063] Step 2: moving the fixed grinding wheel 24 from the second moving position corresponding to the target gear position to the third moving position corresponding to the preset gear position;

[0064] Step 3: Move the fixed grinding wheel 24 from the third moving position corresponding to the preset gear position to the second moving position corresponding to the target gear position.

[0065] Specifically, in each adjustment of the bean grinding device 100, if the target gear is set to adjust from fine to coarse, then the initial gear is smaller than the target gear, and the initial gear needs to be adjusted to coarse first. This process is the adjustment of the preset gear, and at this time, the fixed grinding wheel 24 has a third moving position. Therefore, first, the fixed grinding wheel 24 needs to be moved from the first moving position corresponding to the initial gear to the second moving position corresponding to the target gear; secondly, the fixed grinding wheel 24 needs to be moved from the second moving position corresponding to the target gear to the third moving position corresponding to the preset gear; and again, the fixed grinding wheel 24 needs to be moved from the third moving position corresponding to the preset gear to the second moving position corresponding to the target gear. The purpose of setting the preset gear is to eliminate the virtual position of the fixed grinding wheel 24, so that the bean grinding device 100 can grind powder of uniform coarseness and fineness in the adjustment gear.

[0066] In addition, assuming that the initial gear is the third gear and the target gear is the fourth gear, it is equivalent to adjusting the bean grinding device 100 to a coarser powder based on the original grinding. If the third gear is directly adjusted to the fourth gear, because the fixed grinding wheel 24 has a virtual position, and the distance of the virtual position is greater than the moving distance of a single gear, therefore, when adjusting from the third gear to the fourth gear, the fixed grinding wheel 24 does not move, and the virtual position of the fixed grinding wheel 24 is not eliminated, resulting in inconsistent coarseness of the powder ground by the bean grinding device 100. When the initial gear is less than the target gear, the preset gear adjustment method is adopted to move the fixed grinding wheel 24 from the first moving position to the second moving position, and then from the second moving position to the third moving position, and finally the fixed grinding wheel 24 moves from the third moving position to the second moving position. After the fixed grinding wheel 24 moves to the third moving position, the virtual position of the fixed grinding wheel 24 is eliminated. When the fixed grinding wheel 24 moves to the second moving position, the fixed grinding wheel 24 cannot move upward. The size of the bean grinding chamber 25 between the fixed grinding wheel 24 and the movable grinding wheel 23 is in a stable state. When the movable grinding wheel 23 rotates, it cannot press the fixed grinding wheel 24 upward through the coffee beans. The adjustment of the preset gear eliminates the virtual position of the fixed grinding wheel 24, so that the powder ground by the bean grinding device 100 is of uniform coarseness.

[0067] Preferably, when the initial gear is greater than the target gear, the fixed grinding wheel 24 is moved from the first moving position corresponding to the initial gear to the second moving position corresponding to the target gear. Specifically, if a coarse-to-fine method is adopted, the initial gear is greater than the target gear. Assuming that the initial gear is the sixth gear and the target gear is the fifth gear, the sixth gear can be directly adjusted to the fifth gear without using the preset gear adjustment method. This is because in the bean grinding device 100, in the previous grinding operation of the bean grinding device 100, the movable grinding wheel 23 rotates to squeeze the coffee beans, and the coffee beans squeeze the fixed grinding wheel 24 to move upward, and the fixed grinding wheel 24 moves to the top. The virtual position of the fixed grinding wheel 24 has been eliminated at the initial gear, and the adjustment mechanism 3 can directly drive the fixed grinding wheel 24 to move downward to reduce the grinding space.

[0068] Preferably, the gap Y between two adjacent thread surfaces is greater than the distance that the fixed grinding wheel 24 moves in a single gear, and the preset gear and the third moving position corresponding to the preset gear are determined according to the target gear, including:

[0069] The target gear is increased by a preset gear difference to obtain a preset gear, wherein the preset gear difference is at least 4 gears;

[0070] The preset gear difference is multiplied by the distance the fixed grinding wheel 24 moves in a single gear to obtain the moving distance;

[0071] The moving distance is increased on the second moving position corresponding to the target gear position to obtain a third moving position corresponding to the preset gear position.

[0072] Specifically, in the adjustment of a single gear, the distance moved by the fixed grinding wheel 24 is relatively small, which is about one-fourth of the gap Y. Therefore, the target gear increases the preset gear difference, and the preset gear difference needs to be greater than or equal to 4 gears. Only when the moving distance corresponding to the preset gear is greater than the gap Y, can the virtual position of the fixed grinding wheel 24 be eliminated. The moving distance of a single gear is related to the setting of the induction switch; in some embodiments, the bean grinding device 100 includes a plurality of light holes 3231, and the plurality of light holes 3231 are equidistantly distributed around the fixed grinding wheel 24. The calculation formula for the moving distance of the fixed grinding wheel 24 corresponding to a single gear is: L=P / S; wherein P is the pitch, and in this embodiment, the pitch is the distance between two adjacent threads in the first adjustment member 324 or the second adjustment member 325; S is the number of light holes 3231.

[0073] Specifically, when the first adjusting member 324 rotates clockwise or counterclockwise for one revolution, the first adjusting member 324 drives the fixed grinding wheel 24 to move upward or downward by a pitch through the second adjusting member 325. However, in the bean grinding device 100, the coarseness of the ground powder is generally measured in microns, and generally there is no need to move more than a pitch. Therefore, the number of light holes 3231 is also the number of gears. In this embodiment, the number of light holes 2231 is 72, and the 72 light holes 3231 are arranged equidistantly or with equal arcs around the circumference of the first adjusting member 324.

[0074] In addition, the first adjusting member 324 and the second adjusting member 325 are both made by injection molding, and the tolerance gap of the meshing of the two screw threads is generally related to the material and the thermal deformation amount.

[0075] Preferably, the bean grinding device 100 has a minimum fine adjustment gear and a maximum coarse adjustment gear, and there are multiple gears between the minimum fine adjustment gear and the maximum coarse adjustment gear. The initial gear and the target gear are both one of the multiple gears, and the preset gear is a multiple of a single gear. Specifically, the photoelectric switch 33 can be driven by a knob, and the adjustment mechanism 3 can be controlled to adjust the gear of the fixed grinding wheel 24. When the knob rotates clockwise, the fixed grinding wheel 24 is adjusted toward the minimum fine adjustment gear, and when the knob rotates counterclockwise, the fixed grinding wheel 24 is adjusted toward the maximum fine adjustment gear. However, when the knob is adjusted counterclockwise, the bean grinding chamber 25 is adjusted from fine to coarse, and the fixed grinding wheel 24 automatically moves to the third moving position according to the adjustment of the preset gear, and then moves to the second moving position determined by the target gear.

[0076] In this embodiment, a bean grinding device 100 is also provided. Figures 1 to 8 As shown, it includes: a support frame 1, a driving mechanism 2, a movable grinding wheel 23, a fixed grinding wheel 24, an adjusting mechanism 3, and a control circuit board. The driving mechanism 2 is installed on the support frame 1, the movable grinding wheel 23 is installed at the output end of the driving mechanism 2, the movable grinding wheel 23 is movably arranged in the support frame 1, the fixed grinding wheel 24 is sleeved outside the movable grinding wheel 23, and a grinding chamber 25 is formed between the outer wall of the movable grinding wheel 23 and the fixed grinding wheel 24; the control circuit board is used to control the adjusting mechanism 3 so that the adjusting mechanism 3 has an initial gear position and a target gear position, the initial gear position corresponds to the first moving position, and the target gear position corresponds to the second moving position; when the initial gear position is smaller than the target gear position, the control circuit board is used to control the adjusting mechanism 3 so that the adjusting mechanism 3 has a preset gear position, and the preset gear position is used to determine that the fixed grinding wheel 24 has a third moving position. At the first moving position, the grinding chamber 25 becomes smaller; at the second moving position, the grinding chamber 25 becomes larger.

[0077] Specifically, the support frame 1 is used to support the driving mechanism 2 and the adjusting mechanism 3. The driving mechanism 2 is used to drive the movable grinding wheel 23 to rotate. When there are coffee beans in the grinding bean chamber 25, the movable grinding wheel 23 rotates to squeeze the coffee beans, and the coffee beans squeeze the fixed grinding wheel 24. The fixed grinding wheel 24 is fixed in the circumferential direction. The adjusting mechanism 3 is used to adjust the vertical position of the fixed grinding wheel 24, so as to adjust the size of the grinding bean chamber 25. The adjusting mechanism 3 drives the fixed grinding wheel 24 to move up and down, so that the fixed grinding wheel 24 has a first moving position and a second moving position. When the initial gear position is less than the target gear position, the fixed grinding wheel 24 has a third moving position, and the third moving position corresponds to a preset gear position determined according to the target gear position. The fixed grinding wheel 24 determines the corresponding third moving position according to the preset gear position, which can eliminate the virtual position of the fixed grinding wheel 24 and grind coffee powder with uniform coarseness and fineness. In addition, the support frame 1 has a powder guiding shell 11 , a first end of the powder guiding shell 11 is connected to the bean grinding chamber 25 , and a second end of the powder guiding shell 11 has a powder outlet 111 , through which the ground powder from the bean grinding chamber 25 is discharged.

[0078] In some embodiments, Figure 2 , Figure 3 , Figure 5 As shown, the adjustment mechanism 3 includes a second driving member 31, a second transmission assembly 32, a first adjustment member 324, a second adjustment member 325, and a photoelectric switch 33. The second driving member 31 is installed on the support frame 1, and the first end of the second transmission assembly 32 is installed on the output end of the second driving member 31. The first adjustment member 324 is fixed to the second end of the second transmission assembly 32. The first adjustment member 324 and the second adjustment member 325 are transmission-matched, and the second adjustment member 325 is sleeved on the outside of the fixed grinding wheel 24. The second transmission assembly 32 is provided with a plurality of light-through holes 3231, and the plurality of light-through holes 3232 are provided. The light holes 3231 are evenly distributed along the circumference of the first adjusting member 324; the photoelectric switch 33 is electrically connected to the second driving member 31, and the photoelectric switch 33 includes a bracket 331, a transmitter 332, and a receiver 333. The bracket 331 is installed on the support frame 1, and the bracket 331 is U-shaped. The bracket 331 has a notch, and the transmitter 332 and the receiver 333 are respectively installed at both ends of the bracket 331. The second transmission component 32 is at least partially located at the notch, and the light hole 3231 of the second transmission component 32 is arranged between the transmitter 332 and the receiver 333.

[0079] Specifically, the second driving member 31 is used to drive the second transmission assembly 32 to rotate, and the second transmission assembly 32 is used to change the torque output direction of the second driving member 31, and change the torque and transmission ratio of the second driving member 31, and transmit the power to the first adjusting member 324, and the first adjusting member 324 is used to drive the second adjusting member 325 to move up and down. In addition, a plurality of light holes 3231 are provided on the circumference of the fourth transmission wheel 323 of the second transmission assembly 32, so when the second transmission assembly 32 rotates, the plurality of light holes 3231 also rotates.

[0080] In addition, if Figure 11 to Figure 12As shown, the transmitter 332 is used to transmit light, and the receiver 333 is used to receive light. When the light hole 3231 moves between the transmitter 332 and the receiver 333, the receiver 333 generates a photoelectric signal. Each photoelectric signal represents a gear. Assuming that there are 72 light holes 3231 evenly distributed on the circumference of the fourth transmission wheel 323, the receiver 333 can receive 72 electrical signals when the fourth transmission wheel 323 rotates one circle. There is a light shielding part 3232 between two adjacent light holes 3231. The light shielding part 3232 is used to shield the light of the transmitter 332. When the fourth transmission wheel 323 rotates, the light hole 3231 moves between the transmitter 332 and the receiver 333. Therefore, when multiple light holes 3231 rotate, the receiver 333 senses and calculates the rotation angle of the first adjustment member 324, so as to determine that the adjustment mechanism 3 has adjusted multiple gears. Conversely, the second driving member 31 can also be driven by the control circuit, so that the second driving member 31 drives the second transmission assembly 32 to adjust multiple gears according to the control instruction, thereby adjusting the grinding coarseness of the bean grinding device 100.

[0081] Preferably, Figure 5 and Figure 7 As shown, the first adjusting member 324 is sleeved on the outside of the second adjusting member 325, and the inner wall of the first adjusting member 324 is threadedly connected to the outer wall of the second adjusting member 325; the second adjusting member 325 is sleeved on the outside of the support frame 1, and the support frame 1 has a guide block 12, and the second adjusting member 325 has a guide groove 3253, and the guide block 12 is at least partially arranged in the guide groove 3253 and abuts against the inner wall of the second adjusting member 325. Specifically, the second adjusting member 325 has a material trough 3251, which is connected to the grinding chamber 25. Coffee beans are poured into the material trough 3251, and the coffee beans enter the grinding chamber 25 one after another. The guide block 12 is at least partially arranged in the guide groove 3253 of the second adjusting member 325. The guide block 12 is used to abut against the inner wall of the second adjusting member 325 to limit the circumferential rotation of the second adjusting member 325. When the second transmission assembly 32 drives the first adjusting member 324 to rotate, friction is generated between the inner wall of the first adjusting member 324 and the outer wall of the second adjusting member 325, and the second adjusting member 325 is limited by the guide block 12. The friction force will drive the second adjusting member 325 to move upward or downward. This driving principle is similar to that of the screw driving the moving block to move in the axial direction of the screw, which will not be described in detail here.

[0082] Preferably, Figure 3 and Figure 5As shown, the second transmission assembly 32 includes a second drive shaft 311, a second drive gear shaft 321, a third transmission wheel 322, and a fourth transmission wheel 323. The second drive shaft 311 is installed on the output end of the second drive member 31, the second drive gear shaft 321 is rotatably arranged on the support frame 1, the second drive gear shaft 321 is in transmission cooperation with the second drive shaft 311, the third transmission wheel 322 is sleeved on the outside of the second drive gear shaft 321, the fourth transmission wheel 323 is sleeved on the outside of the first adjustment member 324, and the third transmission wheel 322 is meshed with the fourth transmission wheel 323. Specifically, the second drive member 31 is used to drive the second drive shaft 311 to rotate, the second drive shaft 311 drives the transmission wheel shaft 321 to rotate, the second drive gear shaft 321 drives the fourth transmission wheel 323 to rotate through the third transmission wheel 322, and drives the first adjustment member 324 to rotate; the third transmission wheel 322 and the fourth transmission wheel 323 are used to change the transmission ratio of the second transmission assembly 32.

[0083] Preferably, the second transmission assembly 32 further includes a fifth transmission wheel 327 and a support shaft 326, wherein the first end of the support shaft 326 is mounted on the support frame 1, the fifth transmission wheel 327 is rotatably disposed at the second end of the support shaft 326, and the fifth transmission wheel 327 is meshed with the fourth transmission wheel 323. Specifically, the fifth transmission wheel 327 is meshed with the fourth transmission wheel 323, and the fourth transmission wheel 323 is meshed with the fifth transmission wheel 327 and the third transmission wheel 322, respectively. In the circumferential direction of the fourth transmission wheel 323, the fourth transmission wheel 323 has two rotation contact points, which can further improve the stability of the fourth transmission wheel 323 when rotating.

[0084] In some embodiments, Figure 4 As shown, the driving mechanism 2 includes a first driving shaft 211, a first driving member 21, and a first transmission assembly 22. The first transmission assembly 22 includes a first driving gear shaft 221, a first transmission wheel 222, a second transmission wheel 223, and a transmission shaft 224. The first driving member 21 is installed on the support frame 1, the first driving shaft 211 is installed on the output end of the first driving member 21, the first driving gear shaft 221 is rotatably disposed on the support frame 1, and the first driving gear shaft 221 is transmission-matched with the first driving shaft 211, the first transmission wheel 222 is sleeved on the outside of the first driving gear shaft 221, the second transmission wheel 223 is installed on the first end of the transmission shaft 224, the transmission shaft 224 is rotatably disposed on the support frame 1, the movable grinding wheel 23 is installed on the second end of the transmission shaft 224, and the first transmission wheel 222 is meshed with the second transmission wheel 223.

[0085] Specifically, the first driving member 21 is used to drive the first driving shaft 211 to rotate, the first driving shaft 211 is used to drive the first driving gear shaft 221 to rotate, the first driving gear shaft 221 drives the second driving wheel 223 to rotate through the first transmission wheel 222, and the second transmission wheel 223 drives the movable grinding wheel 23 to rotate through the transmission shaft 224. The first driving gear shaft 221, the first transmission wheel 222, and the second transmission wheel 223 are used to change the torque output direction of the first driving shaft 211, and also change the transmission ratio of the first transmission assembly 22, thereby increasing the torque of the movable grinding wheel 23, so that the movable grinding wheel 23 squeezes the coffee beans when rotating and grinds the coffee beans into coffee powder.

[0086] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0087] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the present invention, and to fully describe the technical solution, purpose and effect of the present invention. Its purpose is to make the public understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the scope of protection of the present invention.

[0088] The above embodiments are not exhaustive enumerations of the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for adjusting a bean grinding device, characterized in that: The bean grinding device has an initial gear position and a target gear position, and the bean grinding device has a movable fixed grinding wheel; The adjustment method comprises the following steps: when the initial gear position is smaller than the target gear position, determining the preset gear position and the third moving position corresponding to the preset gear position according to the target gear position, and moving the fixed grinding wheel from the first moving position corresponding to the initial gear position to the second moving position corresponding to the target gear position; Moving the fixed grinding wheel from a second moving position corresponding to the target gear position to a third moving position corresponding to the preset gear position; The fixed grinding wheel is moved from a third moving position corresponding to a preset gear position to a second moving position corresponding to a target gear position.

2. The method for adjusting the bean grinding device according to claim 1, characterized in that: When the initial gear position is greater than the target gear position, the fixed grinding wheel is moved from a first moving position corresponding to the initial gear position to a second moving position corresponding to the target gear position.

3. The method for adjusting the grinding device according to claim 2, characterized in that: The gap between two adjacent thread surfaces is greater than the distance that the fixed grinding wheel moves in a single gear, and the preset gear and the third moving position corresponding to the preset gear are determined according to the target gear, including: The target gear is increased by a preset gear difference to obtain a preset gear, wherein the preset gear difference is at least 4 gears; The preset gear difference is multiplied by the distance the fixed grinding wheel moves in a single gear to obtain the moving distance; The moving distance is increased at the second moving position corresponding to the target gear position to obtain a third moving position corresponding to the preset gear position.

4. The method for adjusting the grinding device according to claim 3, characterized in that: The bean grinding device includes a plurality of light holes, which are evenly distributed around the fixed grinding wheel. The calculation formula for the moving distance of the fixed grinding wheel corresponding to a single gear position is: L = P / S; Among them, P is the pitch; S is the number of light holes.

5. The method for adjusting the bean grinding device according to claim 1, characterized in that: The bean grinding device has a minimum fine adjustment gear and a maximum coarse adjustment gear, and there are multiple gears between the minimum fine adjustment gear and the maximum coarse adjustment gear. The initial gear and the target gear are both one of the multiple gears, and the preset gear is a multiple of a single gear.

6. A bean grinding device, characterized in that: The bean grinding device comprises a support frame, a driving mechanism, a movable grinding wheel, a fixed grinding wheel, and an adjusting mechanism, wherein the driving mechanism is mounted on the support frame, the movable grinding wheel is mounted on the output end of the driving mechanism, the movable grinding wheel is movably arranged in the support frame, the fixed grinding wheel is sleeved outside the movable grinding wheel, and a bean grinding chamber is formed between the outer wall of the movable grinding wheel and the fixed grinding wheel; The adjusting mechanism is installed on the supporting frame, and the fixed grinding wheel is installed at the output end of the adjusting mechanism. The fixed grinding wheel has a first moving position and a second moving position. The first moving position corresponds to an initial gear position, and the second moving position corresponds to a target gear position. When the initial gear position is smaller than the target gear position, the fixed grinding wheel has a third moving position, and the third moving position corresponds to a preset gear position determined according to the target gear position.

7. The method for adjusting a grinding device according to claim 6, wherein: The adjusting mechanism comprises a second driving member, a second transmission assembly, a first adjusting member, a second adjusting member, and a photoelectric switch, wherein the second driving member is mounted on a support frame, a first end of the second transmission assembly is mounted on an output end of the second driving member, the first adjusting member is fixed to a second end of the second transmission assembly, the first adjusting member is in transmission cooperation with the second adjusting member, and the second adjusting member is sleeved on the outside of the fixed grinding wheel; The second transmission component is provided with a plurality of light-through holes, which are equidistantly distributed along the circumference of the first adjusting member; the photoelectric switch is electrically connected to the second driving member, and the photoelectric switch includes a bracket, a transmitter, and a receiver. The bracket is installed on a support frame, the bracket is U-shaped, and the bracket has a notch. The transmitter and the receiver are respectively installed at both ends of the bracket, the second transmission component is at least partially located at the notch, and the light-through hole of the second transmission component is arranged between the transmitter and the receiver.

8. The method for adjusting the bean grinding device according to claim 7, characterized in that: The first adjusting member is sleeved on the outside of the second adjusting member, and the inner wall of the first adjusting member is threadedly connected with the outer wall of the second adjusting member; The second adjusting member is sleeved on the outside of the supporting frame, the supporting frame is provided with a guide block, the second adjusting member has a guide groove, the guide block is at least partially arranged in the guide groove and abuts against the inner wall of the second adjusting member.

9. The method for adjusting a bean grinding device according to claim 7, wherein: The second transmission assembly includes a second drive shaft, a second drive gear shaft, a third transmission wheel, and a fourth transmission wheel. The second drive shaft is installed on the output end of the second drive member. The second drive gear shaft is rotatably disposed on the support frame. The second drive gear shaft is matched with the second drive shaft for transmission. The third transmission wheel is sleeved on the outside of the second drive gear shaft. The fourth transmission wheel is sleeved on the outside of the first adjustment member, and the third transmission wheel is meshed with the fourth transmission wheel.

10. The method for adjusting a bean grinding device according to claim 6, wherein: The driving mechanism includes a first driving shaft, a first driving member, and a first transmission assembly, wherein the first transmission assembly includes a first driving gear shaft, a first transmission wheel, a second transmission wheel, and a transmission shaft; The first driving member is mounted on a supporting frame, the first driving shaft is mounted on an output end of the first driving member, the first driving gear shaft is rotatably disposed on the supporting frame, and the first driving gear shaft is in transmission cooperation with the first driving shaft, the first transmission wheel is sleeved on the outside of the first driving gear shaft, the second transmission wheel is mounted on a first end of the transmission shaft, the transmission shaft is rotatably disposed on the supporting frame, the movable grinding wheel is mounted on a second end of the transmission shaft, and the first transmission wheel is meshed with the second transmission wheel.

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