Powder distribution device and powder distribution method

Abstract

The present invention discloses a powder distribution device and a powder distribution method, which relates to the field of powder distribution technology, and includes a powder bin barrel, the bottom of which is provided with a discharge port; a distribution mechanism, a rotation drive mechanism and a controller, the distribution mechanism includes a quantitative disk and a powder falling sheet, the quantitative disk is rotatably arranged in the inner cavity of the powder bin barrel, the powder falling sheet is fixed to the powder bin barrel, the powder falling sheet is attached to the upper side of the quantitative disk and covers the discharge port; the output shaft of the rotation drive mechanism is connected to the quantitative disk; the quantitative disk is provided with a powder groove, and the quantitative disk can be rotated until the powder groove is connected with the discharge port; the powder bin barrel has a starting position and an end position on both sides of the powder falling sheet, and the controller controls the output shaft of the rotation drive mechanism to drive the quantitative disk to reciprocate, so as to drive the powder groove to rotate between the starting position and the end position. The present invention can realize accurate quantitative removal through a single silo, is simple to process, and has good powder distribution accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of powder distribution, and in particular to a powder distribution device and a powder distribution method. Background Art

[0002] In beverage brewing equipment such as milk machines and coffee machines, powdered materials such as milk powder and coffee powder need to be taken out from the silo and quantitatively distributed through a powder dispensing device to ensure the quality of beverage brewing.

[0003] The structure for distributing powder in the existing beverage brewing equipment usually includes a powder barrel, a rotating disk and a fixed disk. The rotating disk is provided with multiple silos, and the fixed disk is provided with a discharge port. When distributing powder, the powder in the powder barrel enters the silo. When the silo rotates to align with the discharge port, the powder in the silo flows out of the discharge port into the container. The mass of powder contained in each silo is fixed. By rotating the rotating disk, different numbers of silos are aligned with the discharge port in turn, thereby realizing quantitative distribution of powder.

[0004] In the above powder distribution structure, multiple silos need to be set on the turntable. Multiple silos must be processed consistently to ensure the accuracy of quantitative powder removal. At the same time, multiple silos also increase the dead corners on the turntable, making it easy for powder to accumulate and inconvenient to clean. Summary of the invention

[0005] The object of the present invention is to provide a powder distribution device and a powder distribution method, wherein the powder distribution device can realize accurate quantitative removal through a single silo, has simple processing, and has good powder distribution accuracy.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] According to a first aspect of the present invention, there is provided a powder material dispensing device, the powder material dispensing device comprising:

[0008] A powder silo barrel, wherein the powder silo barrel has an inner cavity for storing powder, and a discharge port is provided at the bottom of the powder silo barrel;

[0009] A distribution mechanism, the distribution mechanism is arranged in the powder bin barrel and is used to quantitatively take out the powder from the discharge port;

[0010] A rotation drive mechanism, the rotation drive mechanism is transmission-connected to the distribution mechanism;

[0011] a controller, the controller being electrically connected to the rotation drive mechanism;

[0012] The distribution mechanism includes a quantitative disk and a powder dropping sheet, wherein the quantitative disk is rotatably arranged in the inner cavity of the powder bin barrel, and the powder dropping sheet is fixed to the powder bin barrel, and the powder dropping sheet is attached to the upper side of the quantitative disk and covers the upper part of the discharge port; the output shaft of the rotation drive mechanism is connected to the quantitative disk; a powder groove is provided on the quantitative disk, and the quantitative disk can be rotated until the powder groove is connected with the discharge port;

[0013] The powder bin barrel has a starting position and an ending position on both sides of the powder dropping sheet, and the controller controls the output shaft of the rotation drive mechanism to drive the quantitative disk to reciprocate, so as to drive the powder trough to rotate between the starting position and the ending position.

[0014] In this solution, the powder bin barrel stores the powder to be taken out, and the distribution mechanism takes the powder from the barrel through the powder slot on the quantitative disk. The controller controls the rotation drive mechanism to operate, thereby driving the quantitative disk to rotate. When the powder slot rotates to the bottom of the powder drop sheet, it is connected with the discharge port, so that the powder in the powder slot can flow out through the discharge port. When the powder slot rotates to the point where it is misaligned with the discharge port, the powder drop sheet and the quantitative disk block the discharge port, making it difficult for the powder in the powder bin barrel to flow out directly from the discharge port. Therefore, every time the powder slot passes through the discharge port, the discharge port flows out powder of the same weight as the powder load of the powder slot.

[0015] Among them, only one powder trough needs to be set, and the controller controls the rotating drive mechanism to drive the quantitative disk to reciprocate (that is, switch back and forth between forward and reverse rotation), so that the powder trough reciprocates between the starting position and the ending position. The powder trough takes powder from the powder bin barrel at the starting position and the ending position, and discharges the powder from the discharge port when the powder trough is aligned with the discharge port, which reduces the travel of the powder trough to take powder each time, improves the powder taking efficiency, and reduces the energy consumption of the rotating drive mechanism. The controller controls the number of reciprocating rotations of the rotating drive mechanism, thereby controlling the number of times the powder trough is aligned with the discharge port, and realizing the quantitative distribution of the powder. Since only one powder trough is set, the processing difficulty of the quantitative disk is reduced, and at the same time, the weight of the powder taken out each time is guaranteed to be consistent, so that the powder distribution accuracy is good.

[0016] Furthermore, the distribution mechanism further comprises a stirring impeller, the stirring impeller is fixed to the output shaft of the rotary drive mechanism, and the stirring impeller is located on a side of the powder falling sheet away from the quantitative disk.

[0017] In the present solution, the stirring impeller is fixed to the output shaft of the rotary driving mechanism. When the rotary driving mechanism drives the metering disk to rotate to take powder through the powder trough, the stirring impeller also rotates accordingly, and stirs the powder in the powder bin barrel on the side of the powder falling piece away from the metering disk (i.e., above the powder falling piece), thereby leveling the powder surface. The powder in the powder bin barrel is not prone to unevenness with one side higher than the other due to the powder trough only taking powder at the starting position and the ending position, which facilitates the subsequent removal of powder from the powder bin barrel.

[0018] Further, the powder loading amount of the powder tank is defined as a, and the powder taking setting threshold is defined as b, wherein b is an integer multiple of a;

[0019] When the powder trough reciprocates between the starting position and the ending position so that the powder trough passes the discharge port ((b / a)-1) times, the powder trough rotates 360° and then rotates to the starting position in a direction away from the discharge port.

[0020] In this scheme, the powder loading capacity of the powder trough is a, and the distribution device can distribute powder in integer multiples of a. Initially, the powder trough is located at the starting position. When the powder distribution device distributes powder, the rotating drive mechanism works to drive the powder trough to reciprocate between the starting position and the end position. When the powder trough reciprocates ((b / a)-1) times, the distribution device has distributed (ba) weight of powder. At this time, the powder trough rotates 360° forward or reverse again, so that the powder trough passes through the discharge port again and discharges a weight of powder from the discharge port, and the distribution is completed to set the powder collection threshold b; at the same time, the stirring impeller rotates one circle to level the powder in the powder bin. After that, the powder trough rotates to the starting position in the direction away from the discharge port, that is, the powder trough does not pass through the discharge port when it rotates to the starting position, avoiding taking too much powder; thereby realizing the position initialization of the powder trough, which is convenient for the next powder distribution.

[0021] Furthermore, the powder dispensing device also includes a counting mechanism, which is electrically connected to the controller; the counting mechanism is used to measure the number of times the powder trough is aligned with the discharge port.

[0022] In this solution, the counting mechanism measures the number of times the powder trough is aligned with the discharge port, thereby obtaining the weight of the currently distributed powder. The counting mechanism is electrically connected to the controller, so that the controller can determine the weight of the currently distributed powder according to the data obtained by the counting mechanism, and then the controller can control the rotation drive mechanism to rotate forward, reverse or stop according to the information obtained by the counting mechanism, so as to achieve quantitative and accurate distribution of powder.

[0023] Furthermore, the counting mechanism includes a counting gear and a counter, the counting gear is fixed to the output shaft of the rotating drive mechanism, and the counter is arranged on one side of the counting gear and is electrically connected to the controller; the counting gear has a counting foot, and the counter can count when the counting foot passes by.

[0024] In this solution, the counting mechanism includes a counting gear and a counter. The counting gear rotates with the output shaft of the rotating drive mechanism. When the counting foot on the counting gear passes the counter, the counter counts. Thus, the number of reciprocating rotations of the counting gear can be obtained according to the count of the counter, and then the number of alignments of the powder trough and the discharge port can be obtained. This technical method has a simple and reliable structure, precise technology, and a small size of the counting mechanism, which is convenient for installation in the powder distribution device.

[0025] Furthermore, the counting foot includes a starting position reference foot and an ending position reference foot, and the angle between the starting position reference foot and the ending position reference foot is the same as the angle between the starting position and the ending position; when the powder trough is located at the starting position, the starting position reference foot passes through the counter; when the powder trough is located at the ending position, the ending position reference foot passes through the counter.

[0026] In this solution, the counting foot includes a starting position reference foot and an ending position reference foot. When the powder trough is at the starting position, the starting position reference foot passes through the counter; when the powder trough is at the ending position, the ending position reference foot passes through the counter. Thus, the counter counts when the starting position reference foot and the ending position reference foot pass by respectively. The counter is equivalent to an in-position sensor, and can know whether the powder trough rotates to the starting position or the ending position. The controller can control the rotation direction of the rotating shaft of the rotating drive mechanism according to the information; at the same time, by counting the number of times the starting position reference foot and the ending position reference foot pass through the counter, the number of times the powder trough reciprocates can be known, thereby knowing the current distribution weight of the powder.

[0027] Furthermore, the counting foot also includes an auxiliary foot, and the auxiliary foot is arranged between the starting position reference foot and the ending position reference foot; when the powder trough is aligned with the discharge port, the auxiliary foot passes through the counter.

[0028] In this solution, the auxiliary foot passes through the counter when the powder trough is aligned with the discharge port. By counting the number of times the auxiliary foot passes through the counter, the number of times the powder trough is aligned with the discharge port can be accurately known, and then the weight of the distributed powder can be known.

[0029] Furthermore, the counter is a photoelectric counter, and a photoelectric sensing slot is provided on a side of the counter facing the counting gear, and the counting foot can rotate through the photoelectric sensing slot.

[0030] In this solution, the counter adopts a photoelectric counter, and the counting foot blocks the light path when passing through the photoelectric sensing slot, thereby realizing the measurement of the number of counting feet passing through the photoelectric sensing slot.

[0031] According to a second aspect of the present invention, a powder distribution method is provided, which is applied to the above-mentioned powder distribution device, characterized in that the powder distribution method comprises the following steps:

[0032] S1. Prepare powder in the powder bin and set the powder taking threshold b;

[0033] S2, the rotary drive mechanism drives the quantitative disk to rotate, so that the powder trough reciprocates between the starting position and the end position until the powder flowing out of the discharge port reaches the powder removal set threshold b;

[0034] S3, the powder trough returns to the starting position.

[0035] In this solution, after the powder is loaded into the powder bin, the user inputs the powder taking setting threshold b, and the controller controls the rotation drive mechanism to rotate, driving the powder slot on the quantitative disk to rotate. The powder slot is loaded with powder at the starting position, and passes through the discharge port when rotating toward the end position, and the powder flows out from the discharge port; after the powder slot reaches the end position, it loads powder at the end position, then rotates in the opposite direction toward the starting position, passes through the discharge port again, and the powder flows out from the discharge port again. The powder slot rotates back and forth several times until the weight of the distributed powder reaches the powder taking setting threshold b, and the controller controls the powder slot to rotate back to the starting position to facilitate the next distribution of powder. Therefore, the powder distribution device only needs to set one powder slot to achieve quantitative distribution of powder, and its powder distribution efficiency is high and the distribution accuracy is good.

[0036] Furthermore, the distribution mechanism further comprises a stirring impeller, and the stirring impeller is fixed to the output shaft of the rotary drive mechanism; the powder distribution device further comprises a counting mechanism, and the counting mechanism is used to measure the number of times the powder trough is aligned with the discharge port;

[0037] S2 includes the following steps:

[0038] S21, the rotary drive mechanism drives the quantitative disk to rotate forward, and the powder trough rotates from the starting position to the end position through the discharge port;

[0039] S22, the counting mechanism obtains the number of times i that the powder trough is aligned with the discharge port. If (i<((b / a)-1)) is satisfied, S23 is executed; if (i=((b / a)-1)) is satisfied, S25 is executed, where a is the powder load of the powder trough, b is the powder removal setting threshold, and b is an integer multiple of a;

[0040] S23, the rotation drive mechanism drives the quantitative disk to reverse, and the powder trough rotates from the end position to the start position through the discharge port;

[0041] S24, the counting mechanism obtains the number of times the powder trough is aligned with the discharge port i, if (i<((b / a)-1)) is satisfied, then the process returns to S21; if (i=((b / a)-1)) is satisfied, then S25 is executed;

[0042] S25, the powder tank rotates 360° from the current position;

[0043] And / or, S3 comprises the following steps:

[0044] S31. If the powder trough is at the starting position, the driving mechanism is stopped; if the powder trough is at the ending position, the powder trough is rotated to the starting position in a direction away from the discharge port, and the driving mechanism is stopped.

[0045] In this scheme, the powder taking threshold is b, and the single powder loading amount of the powder hopper is a, then the powder hopper needs to be aligned with the discharge port (b / a) times. When taking powder by rotating the powder hopper, the powder hopper first rotates from the starting position through the discharge port and the powder drop sheet to the end position, and then rotates in the opposite direction from the end position through the discharge port and the powder drop sheet to the starting position. The powder hopper rotates back and forth, and the number of times the discharge port and the powder hopper are aligned is obtained by the counting mechanism after each rotation. When (i=((b / a)-1)) is satisfied, the powder hopper only needs to be loaded with powder once more and poured out from the discharge port, so that the distributed powder meets the powder taking threshold b; at this time, the powder hopper rotates forward or reversely 360° from the current position, so that the powder hopper passes the discharge port for the last time, completing the distribution of the powder taking threshold b, and at the same time, the stirring impeller rotates one circle to stir the powder in the powder bin barrel evenly. Afterwards, if the powder hopper is in the starting position, the driving mechanism is stopped; if the powder hopper is in the ending position, the powder hopper is rotated to the starting position in the direction away from the discharge port, so that the powder hopper returns to the starting position to facilitate the next powder distribution. At the same time, the powder hopper will not pass through the discharge port to avoid over-dispensing of powder.

[0046] In summary, the present invention has the following beneficial effects:

[0047] In the present invention, powder is taken from the barrel through the powder trough, and the controller controls the operation of the rotary drive mechanism to drive the quantitative disk to rotate. When the powder trough rotates to the bottom of the powder falling sheet, it is connected with the discharge port, so that the powder in the powder trough can flow out through the discharge port. The powder trough reciprocates between the starting position and the end position, and the powder trough takes powder from the powder bin barrel at the starting position and the end position, and discharges the powder from the discharge port when the powder trough is aligned with the discharge port, which reduces the travel of the powder trough to take powder each time, improves the powder taking efficiency, and reduces the energy consumption of the rotary drive mechanism. The controller controls the number of reciprocating rotations of the rotary drive mechanism, thereby controlling the number of times the powder trough is aligned with the discharge port, and realizing the quantitative distribution of the powder. Therefore, only one powder trough is required to meet the demand for powder distribution, which reduces the processing difficulty of the quantitative disk, and at the same time ensures that the weight of the powder taken out each time is consistent, so that the powder distribution accuracy is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure of a powder distribution device according to an embodiment of the present invention.

[0049] Figure 2 It is a schematic diagram of the exploded structure of a powder distribution device according to an embodiment of the present invention.

[0050] Figure 3 It is a schematic diagram of the vertical cross-sectional structure of a powder distribution device according to an embodiment of the present invention.

[0051] Figure 4 yes Figure 3 Enlarged structural diagram at A in the middle.

[0052] Figure 5 It is a schematic diagram of the bottom structure of the outer side bottom wall of the powder bin bucket according to an embodiment of the present invention.

[0053] Figure 6 It is a schematic diagram of the top view of the powder distribution device according to one embodiment of the present invention.

[0054] Figure 7 It is a schematic diagram of the exploded structure of the distribution mechanism and the ratchet according to an embodiment of the present invention.

[0055] Figure 8 It is a schematic diagram of the top view of the inner bottom wall of the powder bin barrel according to an embodiment of the present invention.

[0056] Fig. 9 It is a schematic diagram of the three-dimensional structure of a powder falling sheet according to an embodiment of the present invention.

[0057] Fig.10 It is a schematic diagram of the three-dimensional structure of a counting mechanism according to an embodiment of the present invention.

[0058] In the figure:

[0059] 1000, powder distribution device; 100, powder bin barrel; 110, discharge port; 120, first avoidance hole; 130, annular structure; 140, second engaging structure; 150, starting position; 160, end position; 170, mark; 200, rotation drive mechanism; 210, motor assembly; 211, output shaft; 220, gear box; 230, ratchet; 231, connecting tooth; 232, rectangular limiting groove; 233, positioning notch; 300, distribution mechanism; 310, quantitative disk; 311, connecting groove; 312, positioning block; 3 13. Circular groove; 314. Arc groove; 315. Shielding cover; 316. Powder groove; 317. Protruding platform; 3171. Step groove; 320. Powder falling piece; 321. First engaging structure; 322. Third avoidance hole; 330. Stirring impeller; 341. Powder scraping piece; 400. Cylindrical shell; 410. Second avoidance hole; 420. Positioning flange; 500. Counting mechanism; 510. Counting gear; 511. Starting position reference foot; 512. End position reference foot; 513. Auxiliary foot; 520. Counter; 521. Photoelectric sensing groove. DETAILED DESCRIPTION

[0060] The present invention will be further described below in conjunction with the accompanying drawings.

[0061] This embodiment discloses a powder material dispensing device 1000, which can be used in beverage brewing devices such as milk making machines and coffee machines. Specifically in this embodiment, the powder material device is used in a milk making machine to quantitatively distribute milk powder.

[0062] Reference Figures 1 to 3The powder dispensing device 1000 includes a powder bin barrel 100, a rotating drive mechanism 200, a dispensing mechanism 300 and a controller. The powder bin has an inner cavity for storing powder, and a discharge port 110 is provided at the bottom of the powder bin barrel 100. The dispensing mechanism 300 is disposed in the powder bin barrel 100 and is used to quantitatively take out powder from the discharge port 110. The rotating drive mechanism 200 is transmission-connected to the dispensing mechanism 300, and the controller is electrically connected to the rotating drive mechanism 200.

[0063] In this embodiment, the powder bin barrel 100 is a cylindrical injection molded component, which facilitates the distribution mechanism 300 in the powder bin barrel 100 to rotate and distribute the powder. The discharge port 110 is eccentrically arranged on the bottom wall of the powder bin barrel 100, and the powder in the powder bin barrel 100 can flow out from the discharge port 110 for users to brew and drink.

[0064] A cylindrical shell 400 is disposed outside the powder bin barrel 100 to support the powder bin barrel 100 and connect the rotation drive mechanism 200. In addition, in other embodiments, the powder bin barrel 100 may also be in other shapes.

[0065] Reference Figures 2 to 5 A first avoidance hole 120 is also provided at the center of the bottom wall of the powder bin barrel 100 , and a second avoidance hole 410 is provided at the center of the bottom wall of the cylindrical shell 400 . The rotation driving mechanism 200 passes through the first avoidance hole 120 and the second avoidance hole 410 and is connected to the distribution mechanism 300 .

[0066] The bottom wall of the cylindrical housing 400 is provided with a circle of positioning flanges 420 protruding upwards, and the positioning flanges 420 are coaxially arranged with the first avoidance hole 120 and the second avoidance hole 410. The first avoidance hole 120 is sleeved outside the positioning flanges 420 to facilitate the positioning connection between the powder silo barrel 100 and the cylindrical housing 400.

[0067] A notch is provided in the cylindrical housing 400 at a portion directly facing the discharge port 110 . The area of ​​the notch is larger than the area of ​​the discharge port 110 so as to expose the discharge port 110 .

[0068] Reference Figure 2 and Figure 3 The rotation driving mechanism 200 includes a motor assembly 210 and a gear box 220. The motor assembly 210 is connected to the gear box 220, and the side of the gear box 220 facing away from the motor assembly 210 is fixed to the bottom of the cylindrical housing 400.

[0069] The motor assembly 210 includes a speed gear set and a motor, the rotating shaft of the motor is connected to the input shaft of the speed gear set, the output shaft 211 of the speed gear set passes through the gear box 220, the first avoidance hole 120 and the second avoidance hole 410, and extends into the powder bin barrel 100 to connect with the dispensing mechanism 300.

[0070] Reference Figures 2 to 6The dispensing mechanism 300 includes a quantitative disk 310 and a powder dropping sheet 320. The quantitative disk 310 is rotatably disposed in the inner cavity of the powder bin barrel 100, and the powder dropping sheet 320 is fixed to the powder bin barrel 100.

[0071] The quantitative disk 310 is a disc-shaped component, which is rotatably disposed on the bottom wall of the powder bin barrel 100. The diameter of the quantitative disk 310 is slightly smaller than the diameter of the powder bin barrel 100, so that the quantitative disk 310 can be rotatably disposed in the powder bin barrel 100. The center of the quantitative disk 310 is coaxially fixedly connected to the output shaft 211, so that the output shaft 211 can drive the quantitative disk 310 to rotate to take materials in the powder bin barrel 100.

[0072] Specifically, refer to Figure 2 , Figure 4 and Figure 7 A ratchet 230 is connected to one end of the output shaft 211 facing the quantitative disk 310, and a plurality of connecting teeth 231 are evenly arranged on one side of the ratchet 230 facing the quantitative disk 310. A plurality of connecting grooves 311 are arranged in the middle of the lower side of the quantitative disk 310, and the connecting teeth 231 are inserted into the connecting grooves 311 one by one. This facilitates the transmission of the torque on the ratchet 230 to the quantitative disk 310, and facilitates the connection between the quantitative disk 310 and the ratchet 230.

[0073] A rectangular limiting groove 232 is provided on one side of the ratchet 230 facing the output shaft 211 . The end surface of the output shaft 211 is rectangular and matches with the rectangular limiting groove 232 , so that the output shaft 211 can transmit torque to the ratchet 230 .

[0074] A positioning notch 233 is formed on the outer periphery of the ratchet 230, and a positioning block 312 is integrally formed on the lower side of the quantitative disc 310. The positioning block 312 is inserted into the positioning notch 233 to perform positioning when the connecting tooth 231 is matched with the connecting groove 311.

[0075] Preferably, one end of the positioning block 312 away from the quantitative disk 310 abuts against the upper end of the positioning flange 420 to support the positioning disk in the middle of the quantitative disk 310, so that the positioning disk is more stable.

[0076] Reference Figure 4 and Figure 7 The middle part of the side of the quantitative disk 310 facing the bottom wall of the powder bin barrel 100 is recessed upward to form a circular groove 313, thereby reducing the weight of the quantitative disk 310 and avoiding interference between the quantitative disk 310 and the bottom wall of the powder bin barrel 100.

[0077] Combination Figure 8A ring structure 130 is protruded upwardly coaxially with the bottom wall of the powder silo barrel 100 and the first avoidance hole 120 to enhance the structural strength of the bottom wall of the powder silo barrel 100. At the same time, the ring structure 130 is located in the circular groove 313, which can play a role in rough positioning when the quantitative disk 310 is installed at the bottom of the powder silo barrel 100.

[0078] Reference Figure 3 and Figure 6 , the quantitative disk 310 is provided with a hollow structure outside the circular groove 313. Specifically, the quantitative disk 310 is provided with an arc groove 314, and the center of the arc groove 314 coincides with the center of the quantitative disk 310. A shielding cover 315 is snapped on the upper side of the arc groove 314 to prevent the powder from falling into the arc groove 314. As a result, the overall structure of the quantitative disk 310 is lighter, the quantitative disk 310 consumes less energy when rotating, has less inertia, and is easier to switch the rotation direction of the quantitative disk 310.

[0079] Reference Figure 6 The quantitative disk 310 is provided with a powder groove 316, which is eccentrically arranged with respect to the quantitative disk 310, and the distance between the powder groove 316 and the center of the quantitative disk 310 is equal to the distance between the discharge port 110 and the center of the bottom wall of the powder bin barrel 100. Therefore, when the rotation drive mechanism 200 drives the quantitative disk 310 to rotate, the powder groove 316 can rotate to the upper side of the discharge port 110 and communicate with the discharge port 110.

[0080] The upper and lower sides of the powder trough 316 are open, so that the powder in the powder bin barrel 100 can enter the powder trough 316, so that when the powder trough 316 rotates to the discharge port 110, the powder can be discharged from the discharge port 110 to achieve the distribution of the powder.

[0081] In this embodiment, the shape of the lower opening of the powder trough 316 is similar to that of the discharge port 110, so that the powder in the powder trough 316 can be smoothly discharged from the discharge port 110. In other embodiments, the discharge port 110 may also have a different shape from that of the powder trough 316.

[0082] Specifically, in this embodiment, the powder groove 316 and the discharge port 110 are both approximately trapezoidal in shape, and along the radial direction of the quantitative disk 310, the width of the powder groove 316 is the same as the width of the discharge port 110, so that when the powder groove 316 rotates through the discharge port 110, the powder in the powder groove 316 can completely fall out of the discharge port 110. In other embodiments, the width of the discharge port 110 may also be greater than the width of the powder groove 316.

[0083] Reference Figures 6 to 9, the powder falling piece 320 blocks the top of the discharge port 110, and the powder falling piece 320 is attached to the upper side of the quantitative disk 310. Therefore, when the powder groove 316 on the quantitative disk 310 passes through the discharge port 110, the powder falling piece 320 scrapes over the top of the powder groove 316, smoothes the surface of the powder in the powder groove 316, and ensures that the powder groove 316 is accurately loaded with powder. The powder falling piece 320 blocks the powder above the quantitative disk 310, thereby ensuring that the weight of the powder flowing out of the discharge port 110 is consistent with the weight of the powder loaded in the powder groove 316, which is convenient for quantitative and accurate control of powder distribution. When the quantitative disk 310 rotates to the point where the powder groove 316 is staggered from the discharge port 110, the powder falling piece 320 is attached to the top of the quantitative disk 310, preventing the powder above from entering the discharge port 110.

[0084] In this embodiment, the powder falling piece 320 is a structure approximately in the shape of a fan, and one end with a larger area is located above the discharge port 110. The two ends of the powder falling piece 320 are provided with a first clamping structure 321, and two opposite locations on the inner wall of the powder bin barrel 100 are respectively provided with a second clamping structure 140 that is clamped and buckled with the first clamping structure 321, so that the powder falling piece 320 is fixed in the powder bin barrel 100, so that the powder falling piece 320 is not easy to rotate with the rotation of the output shaft 211.

[0085] Reference Figure 4 , Figure 8 and Fig. 9 , a protruding platform 317 is protruded upward in the middle of the quantitative disk 310, and the outer peripheral surface of the protruding platform 317 is circular. A circle of annular step grooves 3171 are arranged on the upper part of the protruding platform 317, and a third avoidance hole 322 is arranged in the middle of the powder falling sheet 320. The protruding platform 317 passes through the third avoidance hole 322, and the step groove 3171 cooperates with the quantitative disk 310 at the third avoidance hole 322. In this way, the quantitative disk 310 can support the powder falling sheet 320 in the middle, making the overall structure more stable, and at the same time, when the quantitative disk 310 rotates, it is not easy to drive the powder falling sheet 320 to rotate.

[0086] Reference Figure 8 The powder bin barrel 100 has a starting position 150 and an ending position 160, which are respectively located on both sides of the powder falling sheet 320, so that the starting position 150 and the ending position 160 are not blocked by the powder falling sheet 320. The controller controls the output shaft 211 of the rotation drive mechanism 200 to drive the quantitative disk 310 to reciprocate, so as to drive the powder groove 316 to reciprocate between the starting position 150 and the ending position 160.

[0087] Reference Figure 5 A mark 170 is provided on the outer side of the bottom of the powder bin barrel at the starting position 150 to facilitate finding the starting position 150.

[0088] Among them, the rotation direction of the powder trough 316 from the starting position 150 through the discharge port 110 to the end position 160 is defined as the forward direction, and the rotation direction of the powder trough 316 from the end position 160 through the discharge port 110 to the starting position 150 is defined as the reverse direction. The controller controls the rotation drive mechanism 200 to drive the quantitative disk 310 to switch back and forth between forward rotation and reverse rotation, so that the powder trough 316 passes through the discharge port 110 multiple times.

[0089] The powder trough 316 can receive the powder in the powder bin barrel 100 at both the starting position 150 and the ending position 160. Each time the powder trough 316 passes through the discharge port 110, powder of the same weight as the powder load of the powder trough 316 flows out. Therefore, the total powder distribution amount of the powder distribution device 1000 can be controlled by only controlling the number of times the powder trough 316 rotates through the discharge port 110.

[0090] With this structure, only one powder slot 316 is required to meet the requirements of powder distribution. Since the powder slot 316 reciprocates between the starting position 150 and the end position 160, the travel of the powder slot 316 for taking powder each time is reduced, the powder taking efficiency is improved, and the energy consumption of the rotating drive mechanism 200 is reduced. Compared with the structure of setting multiple powder slots 316, since only one powder slot 316 is set in this embodiment, it is not necessary to ensure that the volumes of multiple powder slots 316 are completely consistent, which reduces the processing difficulty of the quantitative disk 310. At the same time, it can ensure that the weight of the powder distributed each time is the same, so that the powder distribution accuracy is good.

[0091] Reference Figure 4 and Figure 6 The distribution mechanism 300 further includes a stirring impeller 330, which is located on the side of the powder falling piece 320 away from the quantitative disk 310. The stirring impeller 330 is coaxially fixedly connected to the top of the quantitative disk 310, so that the stirring impeller 330 is also fixed to the output shaft 211 of the rotation drive mechanism 200. Therefore, when the output shaft 211 rotates, it can drive the stirring impeller 330 to rotate synchronously, so that the stirring impeller 330 stirs the powder in the powder bin barrel 100 on the side of the powder falling piece 320 away from the quantitative disk 310 (i.e., above the powder falling piece 320), thereby flattening the powder surface, so that the powder in the powder bin barrel 100 is not easy to be uneven with one side high and the other side low due to the powder groove 316 only taking powder at the starting position 150 and the end position 160, which is convenient for continuing to take out powder from the powder bin barrel 100.

[0092] The stirring impeller 330 is connected to the upper end of the protruding platform 317 of the quantitative disk 310 through a clamping structure, so as to facilitate the disassembly and assembly of the stirring impeller 330 and the quantitative disk 310. The middle part of the stirring impeller 330 is in a conical shape that gradually decreases from bottom to top, so that the powder is not easy to accumulate in the middle part of the stirring impeller 330 when the powder is added to the powder bin barrel 100.

[0093] A powder scraper 341 is connected to the outer periphery of the stirring impeller 330 , and the powder scraper 341 is attached to the inner wall of the powder bin barrel 100 , so that when the stirring impeller 330 rotates, the powder scraper 341 can scrape the powder on the inner wall of the powder bin barrel 100 .

[0094] Reference Figure 2 and Fig.10 The powder dispensing device 1000 further includes a counting mechanism 500, which is used to measure the number of times the powder slot 316 is aligned with the discharge port 110. The counting mechanism 500 is electrically connected to the controller, so that the controller can determine the weight of the currently distributed powder according to the data obtained by the counting mechanism 500, and then the controller can control the rotation drive mechanism 200 to rotate forward, reverse or stop according to the information obtained by the counting mechanism 500, so as to achieve quantitative and accurate distribution of powder.

[0095] In this embodiment, the counting mechanism 500 is contained in the gear box 220 to make the powder distribution device 1000 more compact and reasonable in appearance. In addition, in other embodiments, the technical mechanism can also be disposed at other suitable positions outside the gear box 220 .

[0096] Specifically, the powder loading amount of the powder slot 316 is defined as a, and the powder taking setting threshold is defined as b, wherein the powder taking setting threshold b is a setting value which is an integer multiple of a. In the present embodiment, the powder taking setting threshold b is specifically the powder taking amount required by the user.

[0097] Reference Figures 1 to 10 When the user needs to dispense powder of weight b, the powder trough 316 reciprocates between the starting position 150 and the ending position 160, and the counting mechanism 500 measures the number of times the powder trough 316 passes through the discharge port 110. When the counting mechanism 500 detects that the powder trough 316 passes through the discharge port 110 (b / a) times, the powder has been dispensed to the required dispensing amount b, and the control mechanism controls the rotation drive mechanism 200 to stop dispensing the powder.

[0098] Specifically, in this embodiment, when the powder trough 316 passes through the discharge port 110 ((b / a)-1) times, the powder trough 316 continues to rotate 360° and then rotates to the starting position 150 in the direction away from the discharge port 110. The direction away from the discharge port 110 here refers to the direction of the movement path between the starting position 150 and the end position 160 that does not pass through the discharge port 110. For example, in this embodiment, in the top view direction, the positive rotation is clockwise rotation, and the reverse rotation is counterclockwise rotation. The powder trough 316 rotates from the end position 160 to the starting position 150, that is, it rotates to the starting position 150 in the direction away from the discharge port 110, and when the powder trough 316 is at the starting position 150, the distance the powder trough 316 rotates to the starting position 150 in the direction away from the discharge port 110 is zero (the powder trough 316 is located at the starting position 150 if it does not rotate).

[0099] Therefore, the powder loading amount of the powder trough 316 is a, and the distribution device can distribute powder materials of an integer multiple of a. When the powder material distribution starts, the powder trough 316 is located at the starting position 150, and the rotating drive mechanism 200 works, driving the powder trough 316 to reciprocate between the starting position 150 and the ending position 160. When the powder trough 316 reciprocates ((b / a)-1) times (the powder trough 316 rotates from the starting position 150 through the discharge port 110 to the ending position 160 is recorded as one reciprocating rotation, and the powder trough 316 rotates from the ending position 160 through the discharge port 110 to the starting position 150 is also recorded as one reciprocating rotation), the distribution device has distributed (ba) weight of powder materials, and at this time, the powder trough 316 rotates 360° again, so that the powder trough 316 passes through the discharge port 110 again and discharges a weight of powder materials from the discharge port 110, and the distribution is completed and the powder collection setting threshold b is reached. At the same time, the stirring impeller 330 rotates one circle to level the powder in the powder bin barrel 100. Then, the powder trough 316 rotates to the starting position 150 in a direction away from the discharge port 110. When the powder trough 316 rotates to the starting position 150, it does not pass through the discharge port 110 to avoid taking too much powder; thus, the position of the powder trough 316 is initialized, which is convenient for the next powder distribution.

[0100] In this embodiment, when the powder trough 316 reciprocates ((b / a)-1) times and then rotates 360°, it can rotate forward or reverse.

[0101] In this embodiment, the powder loading amount a of the powder trough 316 (i.e., the weight of the powder loaded in the powder trough 316) is 2 g, and the angle between the starting position 150 and the ending position 160 (i.e., the central angle of the arc formed by the starting position 150, the discharge port 110, and the ending position 160) is 140°. In addition, in other embodiments, the powder loading amount a of the powder trough 316 may be other suitable values, and the angle between the starting position 150 and the ending position 160 may be other angles.

[0102] The following embodiments are used as examples:

[0103] Implementation method 1: The user sets the threshold value b for powder taking to be 10g, (b / a)=5, that is, when the number of times the powder trough 316 is required to take powder is an odd number, the rotation drive mechanism 200 drives the powder trough 316 to rotate forward, then reverse, then forward, and then reverse between the starting position 150 and the end position 160. The powder trough 316 rotates ((b / a)-1)=4 times, passes through the discharge port 110 four times and distributes 8g of powder. After the powder trough 316 reciprocates 4 times, it is located at the starting position 150. At this time, the powder trough 316 can rotate forward or reverse 360°, and then pass through the discharge port 110 once to distribute 2g of powder. After rotating 360°, the powder trough 316 is located at the starting position 150, and there is no need to move to the starting position 150 in the direction away from the discharge port 110.

[0104] Implementation method 2: The user sets the threshold value b for powder taking to 8g, (b / a)=4, that is, when the number of times the powder trough 316 is required to take powder is an even number, the rotation drive mechanism 200 drives the powder trough 316 to rotate forward, then reverse, and then forward again between the starting position 150 and the ending position 160. The powder trough 316 rotates ((b / a)-1)=3 times, passes through the discharge port 110 three times, and distributes 6g of powder. After the powder trough 316 rotates back and forth three times, it is located at the end position 160. At this time, the powder trough 316 can rotate forward or reverse 360°, and then pass through the discharge port 110 once to distribute 2g of powder. After rotating 360°, the powder trough 316 is located at the end position 160, and the powder trough 316 rotates 220° in the direction away from the discharge port 110 until it returns to the starting position 150.

[0105] In addition, in other embodiments, the powder collection setting threshold b may also be different from the powder collection amount required by the user. For example, in some embodiments, when the milk preparation machine is in the condition of low milk preparation amount and high concentration, the powder collection amount required at this time is the milk preparation amount multiplied by the concentration. Since the required powder collection amount is small, the powder collection setting threshold b can be set to be greater than the required powder collection amount, thereby reducing the time taken by the powder tank 316 to return to the starting position 150 after rotating 360°, thereby reducing the milk powder leaking into the mixing bin from the gap between the quantitative disk 310 and the discharge port 110 during the rotation of the powder tank 316 after reaching the required powder collection amount, thereby avoiding the mixing bin from being stained with powder and the excessive amount of milk powder causing dry powder, etc.

[0106] Specifically, in this case, the powder collection threshold b can be set to the amount of powder required when the milk volume is 150ml. For example, when the milk volume is 30ml~60ml and the concentration is 25g / 100ml, the amount of powder required is 7.5g-15g, and the powder collection threshold b is 38g. When the milk volume of 30~60ml accumulates to 150ml, the powder collection threshold b is reached. At this time, the powder tank 316 rotates 360° and then returns to the starting position 150, so as to avoid the mixing process taking too much time, avoid gap leakage causing inaccuracy, and excessive powder causing dry powder.

[0107] Reference Fig.10 In this embodiment, the counting mechanism 500 includes a counting gear 510 and a counter 520. The counting gear 510 is fixed to the peripheral side of the output shaft 211 of the rotation driving mechanism 200, and the counting gear 510 rotates with the output shaft 211 of the rotation driving mechanism 200. The counter 520 is arranged on one side of the counting gear 510 and is electrically connected to the controller.

[0108] The counting gear 510 has a counting foot, which protrudes radially outward. When the counting foot on the counting gear 510 passes the counter 520, the counter 520 counts, so that the number of reciprocating rotations of the counting gear 510 can be known according to the count of the counter 520, and then the number of alignments of the powder groove 316 and the discharge port 110 can be known. This technical method has a simple and reliable structure, precise technology, and the counting mechanism 500 is small in size, which is convenient for installation in the powder distribution device 1000.

[0109] In this embodiment, the counting gear 510 is located in the gear box 220 , and the counter 520 is fixedly connected to the inner wall of the gear box 220 .

[0110] Specifically, the counting foot includes a starting position reference foot 511 and an ending position reference foot 512. The angle between the starting position reference foot 511 and the ending position reference foot 512 is the same as the angle between the starting position 150 and the ending position 160. Specifically, in this embodiment, the angle between the starting position reference foot 511 and the ending position reference foot 512 is 140°. When the powder tank 316 is located at the starting position 150, the starting position reference foot 511 passes through the counter 520; when the powder tank 316 is located at the ending position 160, the ending position reference foot 512 passes through the counter 520.

[0111] Thus, the counter 520 can know that the powder trough 316 rotates to the starting position 150 or the ending position 160, and the controller can control the rotation direction of the rotating shaft of the rotating drive mechanism 200 according to the information. At the same time, by counting the number of times the starting position reference foot 511 and the ending position reference foot 512 pass through the counter 520, the number of times the powder trough 316 reciprocates can be known, thereby knowing the current distribution weight of the powder.

[0112] Preferably, the counting foot further includes an auxiliary foot 513, and the auxiliary foot 513 is arranged between the starting position reference foot 511 and the ending position reference foot 512. When the powder trough 316 is aligned with the discharge port 110, the auxiliary foot 513 passes through the counter 520. Specifically in the present embodiment, the discharge port 110 is located on the bisector of the angle between the starting position 150 and the ending position 160, that is, the angle between the discharge port 110 and the starting position 150 and the angle between the discharge port 110 and the ending position 160 are both 70°; correspondingly, the angle between the auxiliary foot 513 and the starting position reference foot 511 and the angle between the auxiliary foot 513 and the ending position reference foot 512 are both 70°.

[0113] Thus, the auxiliary foot 513 passes through the counter 520 when the powder trough 316 is aligned with the discharge port 110. By counting the number of times the auxiliary foot 513 passes through the counter 520, the number of times the powder trough 316 is aligned with the discharge port 110 can be accurately known, and then the weight of the distributed powder can be known.

[0114] In this embodiment, the counter 520 is a photoelectric counter. A photoelectric sensing slot 521 is provided on the side of the counter 520 facing the counting gear 510. When the counting foot passes through the photoelectric sensing slot 521, the light path is blocked, thereby measuring the number of counting feet passing through the photoelectric sensing slot 521.

[0115] In addition, in other embodiments, the counter 520 may also be a counter of other suitable forms such as a capacitive type, a magnetic induction type, or a trigger type.

[0116] In this embodiment, when each counting foot passes through the photoelectric sensing slot 521, the counter 520 counts once. Therefore, when the powder slot 316 reciprocates to distribute powder, when the starting reference foot 511 passes through the counter 520, the counter 520 counts 1, 5, 9, 13, 17... (4k-3), where k is the number of times the starting reference foot 511 passes through the counter 520; when the ending reference foot 512 passes through the counter 520, the counter 520 counts 3, 7, 11, 15, 19... (4m-1), where m is the number of times the ending reference foot 512 passes through the counter 520; when the auxiliary foot 513 passes through the counter 520, the counter 520 counts 2, 4, 6, 8, 10... (2n), where n is the number of times the auxiliary foot 513 passes through the counter 520. Therefore, by the number of times the counting foot passes through the counter 520 obtained by the counter 520, the controller can determine whether the current powder trough 316 is located at the starting position 150 or the ending position 160, and determine the weight of the distributed powder according to the number of times the auxiliary foot 513 passes through the counter 520, thereby controlling the next rotation of the powder trough 316.

[0117] In this embodiment, according to the number of times n that the auxiliary foot 513 passes through the counter 520, the specific control logic of the controller is as follows:

[0118] When n<((b / a)-1): If the current count of the counter 520 = (4k-3), the controller determines that the powder slot 316 is at the starting position 150, and the controller controls the rotation drive mechanism 200 to rotate forward; if the current count of the counter 520 = (4m-1), the controller determines that the powder slot 316 is at the ending position 160, and the controller controls the rotation drive mechanism 200 to reverse.

[0119] When n=((b / a)-1), the auxiliary foot 513 passes through the discharge port 110 for the (ba)th time, and the discharge port 110 has dispensed (ba) weight of powder. The controller controls the rotation drive mechanism 200 to continue rotating in the current direction until the next count of the counter 520, and determines whether the powder trough 316 is at the starting position 150 or the ending position 160 according to the next count of the counter 520 (that is, the counter 520 counts to (2n+1)). When (2n+1)=(4k-3), the controller determines that the powder tank 316 rotates to the starting position 150, and the controller controls the rotation drive mechanism 200 to rotate forward or reverse 360° to return to the starting position 150 and then stop the rotation drive mechanism 200; when (2n+1)=(4m-1), the controller determines that the powder tank 316 rotates to the end position 160, and the controller controls the rotation drive mechanism 200 to rotate forward or reverse 360° to return to the end position 160, and then controls the rotation drive mechanism 200 to rotate (i.e., rotate forward) 220° in the direction away from the discharge port 110 and return to the starting position 150 and then stop the rotation drive mechanism 200. Wherein, n, k, and m are all positive integers.

[0120] In addition, in other embodiments, the controller may also use other logics for judgment and control.

[0121] The method of distributing powder by the powder distributing device 1000 of this embodiment is as follows:

[0122] The powder distribution method of this embodiment includes the following steps:

[0123] S1, configuring the powder dispensing device 1000, disposing powder in the powder bin 100, and setting a powder taking setting threshold b;

[0124] Among them, the milk making machine, coffee machine and other equipment using the powder dispensing device 1000 are provided with input buttons and a display panel, and the user can input the powder extraction setting threshold through the input button.

[0125] S2, the controller controls the rotating drive mechanism 200 to drive the quantitative disk 310 to rotate, so that the powder slot 316 reciprocates between the starting position 150 and the end position 160, until the powder flowing out of the discharge port 110 reaches the powder collection set threshold b;

[0126] S2 includes the following steps:

[0127] S21, the controller controls the rotation drive mechanism 200 to start, initially the powder trough 316 is located at the starting position 150, the rotation drive mechanism 200 drives the quantitative disk 310 to rotate forward, and the powder trough 316 rotates from the starting position 150 to the end position 160 through the discharge port 110.

[0128] The powder trough 316 is loaded with powder at the starting position 150 , and passes through the discharge port 110 when rotating toward the end position 160 , and the powder flows out from the discharge port 110 , dispensing powder of a weight.

[0129] S22, the counting mechanism 500 obtains the number of times i that the powder trough 316 is aligned with the discharge port 110. If i<((b / a)-1), S23 is executed; if i=((b / a)-1), S25 is executed, where a is the powder load of the powder trough 316, b is the powder removal setting threshold, and b is an integer multiple of a.

[0130] Specifically in this embodiment, the number of times the powder trough 316 is aligned with the discharge port 110 can be known according to the number of times the auxiliary foot 513 passes through the counter 520 measured by the counter 520 .

[0131] S23 , the controller controls the rotation drive mechanism 200 to drive the quantitative disk 310 to reverse, and the powder trough 316 rotates from the end position 160 to the start position 150 through the discharge port 110 .

[0132] After the powder trough 316 reaches the end position 160, it loads the powder at the end position 160, then rotates in the opposite direction toward the starting position 150, passes through the discharge port 110 again, and the powder flows out from the discharge port 110 again, and the powder of a weight is distributed again.

[0133] S24, the counting mechanism 500 obtains the number of times i that the powder trough 316 is aligned with the discharge port 110, and if (i<((b / a)-1)) is satisfied, the process returns to S21; if (i=((b / a)-1)) is satisfied, the process executes S25.

[0134] S25, the powder tank 316 rotates 360° from the current position.

[0135] The powder trough 316 is aligned with the discharge port 110 for the number of times i=((b / a)-1). At this time, a total of (ba) weight of powder has been distributed. The powder trough 316 only needs to be loaded with powder once more and poured out from the discharge port 110, so that the distributed powder meets the set threshold b for powder collection. At this time, the powder trough 316 rotates 360° from the current position, so that the powder trough 316 passes the discharge port 110 for the last time, completing the distribution of the set threshold b for powder collection. At the same time, the stirring impeller 330 rotates one circle to evenly stir the powder in the powder bin barrel 100.

[0136] Therefore, the powder distribution device 1000 only needs to be provided with one powder slot 316 to achieve quantitative distribution of powder, and its powder distribution efficiency is high and the distribution accuracy is good.

[0137] The powder tank 316 can rotate 360° in the forward direction and 360° in the reverse direction.

[0138] S3, the powder tank 316 returns to the starting position 150.

[0139] S3 includes the following steps:

[0140] S31, if the powder tank 316 is at the starting position 150, the rotation driving mechanism 200 is stopped and the powder distribution is completed.

[0141] S32. If the powder trough 316 is in the end position 160, the powder trough 316 rotates to the starting position 150 in the direction away from the discharge port 110 (i.e., in the present embodiment, the powder trough 316 rotates 220° forward to return to the starting position 150), so that the powder trough 316 rotates to the starting position 150 in the direction away from the discharge port 110, so that the powder trough 316 returns to the starting position 150 to facilitate the next powder distribution. At the same time, the powder trough 316 will not pass through the discharge port 110 to avoid over-dispensing of powder. Then, the rotation drive mechanism 200 is stopped.

[0142] Therefore, after the powder material is dispensed, the controller controls the powder chute 316 to rotate back to the starting position 150 to facilitate the next powder material dispensing.

[0143] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A powder distribution device, characterized in that: The powder distribution device (1000) comprises: A powder silo barrel (100), the powder silo barrel (100) having an inner cavity for storing powder, and a discharge port (110) is provided at the bottom of the powder silo barrel (100); a distribution mechanism (300), the distribution mechanism (300) being arranged in the powder bin barrel (100) and being used for quantitatively taking out powder from the discharge port (110); A rotation drive mechanism (200), the rotation drive mechanism (200) being transmission-connected to the distribution mechanism (300); A controller, the controller being electrically connected to the rotation drive mechanism (200); The distribution mechanism (300) comprises a quantitative disk (310) and a powder dropping sheet (320), wherein the quantitative disk (310) is rotatably arranged in the inner cavity of the powder bin barrel (100), and the powder dropping sheet (320) is fixed to the powder bin barrel (100), and the powder dropping sheet (320) is attached to the upper side of the quantitative disk (310) and covers the upper side of the discharge port (110); the output shaft (211) of the rotation drive mechanism (200) is connected to the quantitative disk (310); a powder groove (316) is provided on the quantitative disk (310), and the quantitative disk (310) can be rotated until the powder groove (316) is connected to the discharge port (110); The powder bin barrel (100) has a starting position (150) and an ending position (160) on both sides of the powder dropping sheet (320), and the controller controls the output shaft (211) of the rotation driving mechanism (200) to drive the quantitative disk (310) to reciprocate, so as to drive the powder trough (316) to rotate between the starting position (150) and the ending position (160); The powder loading amount of the powder tank (316) is defined as a, and the powder taking setting threshold is defined as b, wherein b is an integer multiple of a; When the powder trough (316) reciprocates between the starting position (150) and the ending position (160), so that the powder trough (316) passes through the discharge port (110) ((b / a)-1) times, the powder trough (316) rotates 360° and then rotates to the starting position (150) in a direction away from the discharge port (110), wherein when the powder trough (316) is located at the starting position (150), the distance the powder trough (316) rotates in a direction away from the discharge port (110) to the starting position (150) is zero; the direction away from the discharge port (110) here refers to the direction of the movement path between the starting position (150) and the ending position (160) that does not pass through the discharge port (110); The powder distribution device (1000) further comprises a counting mechanism (500), wherein the counting mechanism (500) is electrically connected to the controller; the counting mechanism (500) is used to measure the number of times the powder trough (316) is aligned with the discharge port (110); The counting mechanism (500) comprises a counting gear (510) and a counter (520); the counting gear (510) is fixed to the output shaft (211) of the rotation drive mechanism (200); the counter (520) is arranged on one side of the counting gear (510) and is electrically connected to the controller; the counting gear (510) has a counting foot, and the counter (520) can count when the counting foot passes by; The counting foot comprises a starting position reference foot (511) and an ending position reference foot (512), wherein the angle between the starting position reference foot (511) and the ending position reference foot (512) is the same as the angle between the starting position (150) and the ending position (160); when the powder slot (316) is located at the starting position (150), the starting position reference foot (511) passes through the counter (520); when the powder slot (316) is located at the ending position (160), the ending position reference foot (512) passes through the counter (520).

2. The powder distribution device according to claim 1, characterized in that: The distribution mechanism (300) further comprises a stirring impeller (330), wherein the stirring impeller (330) is fixed to the output shaft (211) of the rotary drive mechanism (200), and the stirring impeller (330) is located on a side of the powder falling sheet (320) away from the quantitative disk (310).

3. The powder distribution device according to claim 1, characterized in that: The counting foot further includes an auxiliary foot (513), and the auxiliary foot (513) is arranged between the starting position reference foot (511) and the ending position reference foot (512); When the powder trough (316) is aligned with the discharge port (110), the auxiliary foot (513) passes the counter (520).

4. The powder distribution device according to claim 1, characterized in that: The counter (520) is a photoelectric counter. A photoelectric sensing slot (521) is provided on one side of the counter (520) facing the counting gear (510), and the counting foot can rotate through the photoelectric sensing slot (521).

5. A powder distribution method, applied to the powder distribution device (1000) according to any one of claims 1 to 4, characterized in that: The powder distribution method comprises the following steps: S1, placing powder in the powder bin (100), and setting a powder extraction threshold b; S2, the rotation drive mechanism (200) drives the quantitative disk (310) to rotate, so that the powder trough (316) reciprocates between the starting position (150) and the end position (160), until the powder flowing out of the discharge port (110) reaches the powder collection set threshold value b; S3. The powder trough (316) returns to the starting position (150).

6. The powder distribution method according to claim 5, characterized in that: The distribution mechanism (300) further comprises a stirring impeller (330), wherein the stirring impeller (330) is fixed to the output shaft (211) of the rotation drive mechanism (200); the powder distribution device (1000) further comprises a counting mechanism (500), wherein the counting mechanism (500) is used to measure the number of times the powder trough (316) is aligned with the discharge port (110); S2 includes the following steps: S21, the rotation drive mechanism (200) drives the quantitative disk (310) to rotate forward, and the powder trough (316) rotates from the starting position (150) to the end position (160) through the discharge port (110); S22, the counting mechanism (500) obtains the number of times i that the powder trough (316) is aligned with the discharge port (110), and if (i<((b / a)-1)) is satisfied, S23 is executed; if (i=((b / a)-1)) is satisfied, S25 is executed, wherein a is the powder load of the powder trough (316), b is the powder extraction setting threshold, and b is an integer multiple of a; S23, the rotation drive mechanism (200) drives the quantitative disk (310) to reverse, and the powder trough (316) rotates from the end position (160) to the start position (150) through the discharge port (110); S24, the counting mechanism (500) obtains the number of times i that the powder trough (316) is aligned with the discharge port (110), and if (i<((b / a)-1)) is satisfied, the process returns to S21; if (i=((b / a)-1)) is satisfied, the process executes S25; S25, the powder tank (316) rotates 360° from the current position; And / or, S3 comprises the following steps: S31. If the powder trough (316) is at the starting position (150), the rotation of the driving mechanism (200) is stopped; if the powder trough (316) is at the ending position (160), the powder trough (316) is rotated in a direction away from the discharge port (110) to the starting position (150), and the rotation of the driving mechanism (200) is stopped.

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