Polishing apparatus and control method for polishing apparatus

Abstract

The present invention relates to a grinding device and a method for controlling the grinding device, the grinding device comprising: a main support; the grinding assembly comprises a grinding mechanism and a material box matched with the grinding mechanism, the material box is used for containing a to-be-ground object, and the grinding mechanism is used for receiving the to-be-ground object from the material box and grinding the to-be-ground object; the weighing module is used for detecting the total weight of the grinding assembly; the weighing module is arranged on the main support, and the grinding assembly is supported on the main support in a suspended mode through the weighing module.

Description

Technical Field

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

[0002] The grinding device on a beverage machine generally includes a material box for storing the material to be ground and a grinding mechanism. The material to be ground in the material box can be supplied to the grinding mechanism, and the grinding mechanism can grind the material to be ground into powder. At present, users have higher and higher requirements for grinding devices. During use, it is expected that the amount of the material to be ground for a single grinding is relatively accurate for subsequent use. However, the process of measuring the material to be ground for a single grinding is relatively complicated at present.

[0003] However, the structure for measuring the material to be ground for a single grinding is usually as follows: a weighing structure is arranged on the material box or the powder receiving box, and the weight change of the material box or the powder receiving box is detected to control the amount of the material to be ground for a single grinding. However, the above structure not only requires an additional opening and closing door structure at the discharge port of the material box or the feed port of the powder receiving box to ensure that the door structure is closed in time when the weighing structure detects a preset amount of the ground material, but also requires an additional electric control structure and system for controlling the door structure, and the overall structure is relatively complicated and the cost is relatively high. Summary of the Invention

[0004] The purpose of the present invention is to provide a grinding device, which can detect the weight of the material to be ground in the material box.

[0005] An embodiment of the present invention provides a grinding device, including:

[0006] Including:

[0007] A main bracket;

[0008] A grinding assembly, the grinding assembly includes: a grinding mechanism and a material box cooperating with the grinding mechanism, the material box is used for accommodating the material to be ground, and the grinding mechanism is used for receiving the material to be ground from the material box and grinding the material to be ground;

[0009] A weighing module, which is used for detecting the total weight of the grinding assembly; the weighing module is arranged on the main bracket, and the grinding assembly is suspended and supported on the main bracket through the weighing module.

[0010] As a further improvement of an embodiment of the present invention, the main bracket is provided with a receiving cavity for accommodating the grinding assembly. The grinding assembly includes a supporting part, the weighing module includes a pressure-bearing part fixedly installed below the supporting part, the pressure-bearing part is located between the supporting part and the main bracket, and the grinding assembly is supported on the weighing module through the supporting part.

[0011] As a further improvement of one embodiment of the present invention, the weighing module also includes a connecting part, which is located on the outside of the supporting part and above the main bracket. The connecting part is provided with a first fixing hole, and the weighing module is fixed to the main bracket by a fastener installed in the first fixing hole.

[0012] As a further improvement of one embodiment of the present invention, the supporting part and the pressure-bearing part are provided with second fixing holes for installing fasteners, and the weighing module is installed on the supporting part by means of fasteners installed in the second fixing holes; the supporting part is provided with an installation groove, and the pressure-bearing part is installed in the installation groove, and the inner wall of the installation groove forms a limit for the weighing module.

[0013] As a further improvement of one embodiment of the present invention, the weighing module also includes a deformation part and a weight detection module, the deformation part is located outside the supporting part and between the pressure-bearing part and the connecting part; the weight detection module is used to calculate the total weight of the grinding assembly according to the deformation amount of the deformation part.

[0014] As a further improvement of an embodiment of the present invention, the deformation portion includes a deformation hole, the axial direction of the deformation hole is perpendicular to the gravity direction, and the upper part and / or the lower part of the deformation portion are provided with a reinforcement protrusion.

[0015] As a further improvement of an embodiment of the present invention, a reinforcing rib is provided on a surface of the support portion that is away from the weighing module.

[0016] As a further improvement of one embodiment of the present invention, the reinforcing ribs include longitudinal ribs and transverse ribs that are arranged alternately, the support portion is provided with a second fixing hole, the second fixing hole is located at the intersection of the longitudinal ribs and the transverse ribs, and the weighing module is fixed to the support portion by a fastener installed in the second fixing hole.

[0017] As a further improvement of one embodiment of the present invention, it includes at least two weighing modules, and the grinding assembly includes at least two supporting parts corresponding to the at least two weighing modules one by one, each of the supporting parts is provided with a mounting groove formed by being recessed upward from the lower surface, and a through opening is provided on one side of the mounting groove, the weighing module passes through the through opening and the pressure-bearing part is placed in the mounting groove, and the opening direction of the through opening of each mounting groove is different.

[0018] As a further improvement of one embodiment of the present invention, the grinding assembly also includes a grinding bracket, the material box, the grinding mechanism and the grinding bracket are arranged in sequence from top to bottom, the grinding mechanism is installed on the grinding bracket, and the material box is fixedly connected to the grinding bracket through a support rod.

[0019] As a further improvement of an embodiment of the present invention, it is characterized in that the grinding bracket includes a main body portion and a fixing portion extending outward from the edge of the main body portion. The main body portion has a receiving cavity, and at least a part of the grinding mechanism is placed in the receiving cavity. The fixing portion is provided with a support rod mounting hole and a grinding mechanism mounting hole. One end of the support rod is mounted in the support rod mounting hole, and the other end is connected to and supports the material box. The grinding mechanism has a fixing hole corresponding to the grinding mechanism mounting hole, and the grinding mechanism is fixed to the grinding bracket by a fastener mounted in the grinding mechanism mounting hole.

[0020] As a further improvement of an embodiment of the present invention, it further includes a weight reminder module for outputting weight reminder information of the material to be ground in the material box according to the weight detected by the weighing module.

[0021] An embodiment of the present invention further provides a control method for a grinding device, including the steps:

[0022] When a start signal is received, control the grinding device to run for a preset grinding duration and then stop running;

[0023] Obtain the first weight of the grinding assembly before the grinding device runs, and the second weight of the grinding assembly after the grinding device runs for the preset grinding duration; wherein, the grinding assembly includes a grinding mechanism and a material box connected to the grinding mechanism. The material box is used to accommodate the material to be ground, and the grinding mechanism is used to receive the material to be ground from the material box and grind the material to be ground. The grinding device further includes a main bracket, the weighing module is arranged on the main bracket, and the grinding assembly is suspended and supported on the main bracket by the weighing module;

[0024] Calculate and store the actual grinding weight of the grinding assembly during the preset grinding duration, and the actual grinding weight is equal to the difference between the first weight and the second weight;

[0025] Judge whether to correct the preset grinding duration according to the actual grinding weight and the preset standard grinding weight.

[0026] As a further improvement of an embodiment of the present invention, if the preset grinding duration needs to be corrected, then update the preset grinding duration to the corrected preset grinding duration, and the corrected preset grinding duration = preset standard grinding weight / (actual grinding weight / preset grinding duration).

[0027] As a further improvement of an embodiment of the present invention, "judging whether to correct the grinding duration according to the actual grinding weight and the preset standard grinding weight" includes:

[0028] Determine whether the actual grinding weight changes during the preset number of continuous operations of the grinding device.

[0029] As a further improvement of an embodiment of the present invention, it further includes:

[0030] Obtain the first initial weight of the grinding assembly before the grinding device operates, and detect the first temperature of the weighing module that obtains the first initial weight of the grinding assembly. Correct the first initial weight according to the first temperature to obtain the first weight;

[0031] Obtain the second initial weight of the grinding assembly before the grinding device operates, and detect the second temperature of the weighing module that obtains the second initial weight of the grinding assembly. Correct the second initial weight according to the second temperature to obtain the second weight.

[0032] The grinding device provided by the present invention integrates a material box and a grinding mechanism to form a grinding assembly. The grinding assembly can be suspended and installed on the main bracket as a whole module. By setting a weighing module between the grinding assembly and the main bracket, the total weight of the grinding assembly can be measured, and the total weights of the grinding assembly before and after grinding of the grinding device can be obtained respectively. Thus, according to the difference in the total weights of the grinding assembly before and after grinding, the weight of the material to be ground consumed before and after grinding can be obtained, and the operation of the grinding device can be directly controlled according to the preset grinding duration. Moreover, the preset grinding duration can be corrected according to the actual weight of the material to be ground consumed detected by the weighing module and the preset standard grinding weight, so that the single grinding amount can be accurately controlled, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional schematic diagram of the grinding device according to an embodiment of the present invention;

[0034] Figure 2 is Figure 1 a partial exploded schematic diagram of the grinding device shown;

[0035] Figure 3 is Figure 1 a three-dimensional schematic diagram of the grinding device shown with the material box hidden;

[0036] Figure 4 is Figure 1 an exploded schematic diagram of the grinding device shown;

[0037] Figure 5 is Figure 1 a three-dimensional schematic diagram of the grinding assembly of the grinding device shown;

[0038] Figure 6 is Figure 5 an assembly schematic diagram of the grinding bracket and the weighing module of the grinding assembly shown;

[0039] Figure 7For Figure 6 The exploded schematic view of the grinding assembly shown in Specific implementation mode

[0040] In the following detailed description, reference is made to the accompanying drawings which form a part of this specification. The illustrative embodiments referred to in the specification and drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Under the inspiration of this application, those skilled in the art can understand that many other implementation modes can be adopted and various changes can be made to the described implementation modes without departing from the gist and scope of protection of the present invention. It should be understood that the various aspects of this application described and illustrated herein can be arranged, replaced, combined, separated and designed in many different configurations, and these different configurations are all within the scope of protection of this application.

[0041] See Figure 1 、 Figure 2 , the present invention provides a grinding device, which may include a main bracket 10 and a grinding assembly 20. The grinding device may be a component inside a coffee machine or a beverage machine, and the main bracket 10 of the grinding device may be a bracket inside the coffee machine or the beverage machine. Of course, the grinding device may also be an independent device.

[0042] Furthermore, see Figures 3 to 7 , the grinding assembly 20 may include a grinding mechanism 22 and a material box 21 that cooperates with the grinding mechanism 22. The material box 21 can be used to hold the material to be ground, and the grinding mechanism 22 is used to receive the material to be ground from the material box 21 and grind the material to be ground.

[0043] In this embodiment, the material box 21 and the grinding mechanism 22 can be directly connected. For example, the material box 21 is directly installed on the grinding mechanism 22. The material box 21 and the grinding mechanism 22 can also be integrated into one body through a third element. For example, both the material box 21 and the grinding mechanism 22 are installed on the third element. The third element may be a grinding bracket 23, and both the material box 21 and the grinding mechanism 22 are installed on the grinding bracket 23.

[0044] In an embodiment of the present invention, the grinding device may be a coffee machine, and the material to be ground may be coffee beans. According to the user's control instruction, the coffee beans in the material box 21 can be supplied to the grinding mechanism 22, and the grinding mechanism 22 can grind the coffee beans into coffee powder. The grinding device may further include a powder receiving box, which is installed on the main bracket 10 and is used to receive the powder ground by the grinding assembly 20.

[0045] The grinding device may further include a weighing module 30, which is used to detect the total weight of the grinding assembly 20. The weighing module 30 is arranged on the main bracket 10, and the grinding assembly 20 can be suspended on the main bracket 10 through the weighing module 30.

[0046] Among them, the total weight of the grinding assembly 20 refers to the sum of the weight of the grinding assembly 20 itself and the weight of the contents it contains. The support here can be that the grinding assembly 20 presses on the weighing module 20, and the weighing module 20 is placed on the main bracket 10. The grinding assembly 20 is only connected to the main bracket 10 through the weighing module 30, and the rest of the positions are suspended and do not contact the main bracket 10. The weight of the grinding assembly 20 can be completely transmitted to the weighing module 30. In this way, the weighing module 30 can measure the weight of the grinding assembly 20 and the contents in the grinding assembly 20. It can be understood that the contents of the grinding assembly 20 can be the material to be ground in the cartridge 21.

[0047] During the manufacturing and assembly process, the cartridge 21, the grinding mechanism 22, and the grinding bracket 23 can be pre-assembled into a module for easy subsequent installation. The weighing module 30 can also be pre-installed on the grinding bracket 23 to form a module with the grinding assembly 20, and then installed on the main bracket 10. The overall assembly process is simple, and the weighing module 30 can accurately detect the weight of the grinding assembly 20 and its contents.

[0048] In an embodiment of the present invention, the grinding device further includes a weight prompt module for outputting weight prompt information of the material to be ground in the cartridge 21 according to the weight detected by the weighing module 30. In this embodiment, the weight prompt module can be a display screen, and the percentage of the remaining weight of the material to be ground in the cartridge 21, such as 100%, 90%, 80%, etc., can be displayed on the display screen, or the specific weight of the remaining material to be ground can be directly displayed, or when the material to be ground is less than the predetermined amount, the user can be directly prompted that the material to be ground is insufficient.

[0049] In an embodiment of the present invention, the grinding device further includes a control module. When receiving a start signal, the control module can control the grinding device to operate for a preset grinding duration. The control module can also be used to: obtain the first weight of the grinding assembly 20 detected before the grinding device runs and the second weight of the grinding assembly 20 detected after the grinding device runs for the preset grinding duration; calculate the actual grinding weight of the grinding device within the preset grinding duration, where the actual grinding weight is equal to the difference between the first weight and the second weight; determine whether to correct the preset grinding duration according to the actual grinding weight; if so, update the preset grinding duration to the corrected preset grinding duration, and the corrected preset grinding duration = preset standard grinding weight / (the actual grinding weight / the preset grinding duration).

[0050] In this embodiment, the operation of the grinding device is directly controlled by the preset grinding duration, rather than by the weight collected by the weighing module 30. The control is relatively precise, which can ensure the grinding amount of actual grinding, and there is no need to additionally set a door structure and a corresponding control device at the powder outlet. The overall structure is simple and the cost is low.

[0051] In this embodiment, since the grinding efficiency of the grinding mechanism 22 changes during use, the weight of the ground material finally ground by the grinding mechanism 22 will change within the same preset grinding duration. Therefore, in order to ensure that the weight of the ground material ground by the grinding mechanism 22 within the preset grinding duration is maintained within the preset range, it is necessary to correct the preset grinding duration.

[0052] After each operation of the grinding device for the preset grinding duration, the weighing module 30 will detect the weight of the grinding assembly 20 and store it in the memory for subsequent call. After each grinding is completed, the actual grinding weight during this operation is calculated based on the weight change of the grinding assembly 20 detected by the weighing module 30 before and after operation, and it is determined whether it is necessary to correct the preset grinding duration.

[0053] When correction is required, the actual grinding efficiency can be calculated first. Among them, the actual grinding efficiency = actual grinding weight / preset grinding duration. Then, the corrected preset grinding duration is calculated based on the actual grinding efficiency and the preset standard grinding weight. The corrected preset grinding duration = preset standard grinding weight / actual grinding efficiency. Finally, the preset grinding duration can be updated to the corrected preset grinding duration, and the grinding device is controlled to operate according to the corrected preset grinding duration during the next operation.

[0054] Specifically, for example, the preset standard grinding weight = 10 g, and the initial grinding efficiency is 1.5 g / s. Therefore, the initial preset grinding duration is 10 g / 1.5 g / s = 6.7 s. However, when the grinding device is controlled to operate for 6.7 s, if it is detected that the actual grinding weight detected by the weighing module changes after consecutive multiple operations are completed, the preset grinding duration can be corrected. If the actual grinding weight within 6.7 s detected in the last time is 14 g, then the actual grinding efficiency of the grinding device can be calculated as 14 g / 6.7 s = 2.09 g / s. Therefore, if the actual grinding amount is corrected to 10 g, the preset grinding duration needs to be corrected to 10 / 2.09 = 4.78 s. That is, the stored initial preset grinding duration of 6.7 s can be replaced with the corrected preset grinding duration of 4.78 s, and the next operation time of the grinding device is controlled to be 4.78 s.

[0055] In this way, it can be ensured that the weight of the material to be ground ground by the grinding device within the preset grinding duration is within the preset range, the control is relatively accurate, and the overall structure is simple.

[0056] Furthermore, the control module is further configured to correct the preset grinding duration when it is detected that the actual grinding weight changes during consecutive preset numbers of operations of the grinding device.

[0057] In this embodiment, if it is detected that the actual grinding weight of the grinding device changes continuously for a preset number of times, such as changing continuously twice, it can be known that the grinding efficiency of the grinding mechanism 22 has changed. Therefore, at this time, the preset grinding duration can be corrected.

[0058] Furthermore, in an embodiment of the present invention, the main bracket 10 is provided with a receiving cavity 11 for receiving the grinding assembly 20. The grinding assembly 20 includes a supporting portion 232. The weighing module 30 includes a pressure-bearing portion 34 that can be fixedly installed below the supporting portion 232. The pressure-bearing portion 34 is located between the supporting portion 232 and the main bracket 10. The grinding assembly 20 is supported by the weighing module 30 through the supporting portion 232.

[0059] In a specific embodiment, the supporting portion 232 can be arranged on the grinding bracket 23, and the receiving cavity 11 of the main bracket 10 is used to receive the grinding bracket 23.

[0060] The grinding bracket 23 can further include a main body portion 231. The main body portion 231 can have a receiving cavity therein, and the supporting portion 232 can extend outward from the main body portion 231. A part of the grinding mechanism 22 can be placed in the receiving cavity, so that the overall volume can be reduced.

[0061] The main bracket 10 can also be provided with a part for receiving the main body portion 231. Specifically, a receiving cavity 11 can be arranged in the middle of the main bracket 10 for the main body portion 231 to be placed in a suspended manner. The grinding bracket 23 is suspended and supported on the main bracket 10 through the supporting portion 232 and the weighing module 30.

[0062] By providing the supporting portion 232, it is convenient for the installation of the weighing module 30, and at the same time, it is also convenient for the assembly of the grinding assembly 20, providing a more stable support for the grinding assembly 20.

[0063] Furthermore, in an embodiment of the present invention, the weighing module 30 further includes a connecting portion 31. The connecting portion 31 is located outside the supporting portion 232 and above the main bracket 10. The connecting portion 31 is provided with a first fixing hole 32. A fixing hole corresponding to the first fixing hole 32 can be arranged on the main bracket 10. The weighing module 30 is fixed to the main bracket 10 through a fastener installed in the first fixing hole 32. Among them, the first fixing hole 32 can be a screw hole, and the fastener can be a screw.

[0064] Furthermore, in an embodiment of the present invention, the supporting portion 232 and the pressure-bearing portion 34 are provided with second fixing holes 235 for installing fasteners. The weighing module 30 is installed on the supporting portion 232 through a fastener installed in the second fixing hole 235. The supporting portion 232 is provided with an installation groove 233, and the pressure-bearing portion 34 is installed in the installation groove 233. The inner wall of the installation groove 233 forms a limit on the weighing module 30.

[0065] The weighing module 30 further includes a deformation part 35 and a weight detection module 36. The deformation part 35 is located outside the support part 232 and between the pressure-bearing part 34 and the connecting part 31. The deformation part 35 deforms with the weight of the grinding assembly 20, and the weight detection module 36 is used to detect the total weight of the grinding assembly 20 according to the amount of deformation of the deformation part 35.

[0066] In this embodiment, the weight detection module 36 is arranged on the connecting part 31. The weight detection module 36 can detect the deformation of the deformation part 35 and output deformation information. The weight detection module 36 can directly calculate the total weight of the grinding assembly 20 according to the detected deformation information, or can send the detected deformation information to the control module and obtain the total weight of the grinding assembly 20 after being processed by the control module.

[0067] In an embodiment of the present invention, the deformation part 35 includes a deformation hole 351. The axial direction of the deformation hole 35 is perpendicular to the up-down direction, that is, the gravity direction. Reinforcing protrusions 352 are arranged on the upper part and / or the lower part of the deformation part 35, so as to improve the strength of the deformation part 352 while ensuring that the deformation part 35 can generate different amounts of deformation with different weights, and avoid the fracture of the deformation part 352.

[0068] In this embodiment, the depth of the installation groove 233 can be less than the height of the pressure-bearing part 34 of the weighing module 30. In this way, the groove wall of the installation groove 233 will not contact the main bracket 10, thus not affecting the measurement accuracy of the weighing module 30.

[0069] The width inside the installation groove 233 can be basically the same as the width of the pressure-bearing part 34 of the weighing module 30. Thus, the installation groove 233 can limit the weighing module 30.

[0070] The installation groove 233 is recessed upward from the lower surface of the support part 232. A through hole 237 can be arranged on one side of the installation groove 233, and the opening direction of the through hole 237 can be perpendicular to the up-down direction. The surface opposite to the through hole 237 is a closed surface, and the distance between the two can form the length of the installation groove 233. The length setting of the installation groove 233 can be set according to the positions of the support part 232 and the corresponding second fixing holes 235 on the weighing module 30. The inner wall of the installation groove 233 can limit the weighing module 30, so that the fixing holes on the weighing module 30 can be quickly aligned with the second fixing holes 235 of the support part 232, improving the assembly efficiency.

[0071] Furthermore, a reinforcing rib 234 is arranged on the surface of the support part 232 facing away from the weighing module 30 to increase the strength of the support part 232.

[0072] In this embodiment, the weighing module 30 can be connected to the support portion 232 through a fastener. A second fixing hole 235 can be provided on the support portion 232, and the weighing module 30 has a fixing hole corresponding to the second fixing hole 235. Among them, the fastener can be a screw, correspondingly, the second fixing hole 235 can be a screw hole. The reinforcing rib 234 can include longitudinally and transversely staggered ribs, and the second fixing hole 235 can be provided at the intersection of the longitudinal rib and the transverse rib, so as to reduce the influence of the opening of the second fixing hole 235 on the strength of the support portion 232.

[0073] Further, in an embodiment of the present invention, when the grinding device includes at least two weighing modules 30, the grinding assembly 20 includes at least two support portions 232 corresponding to the at least two weighing modules 30 one by one. Each weighing module 30 can be installed on a support portion 232, and the opening directions of the through openings 237 of each installation groove 233 are different.

[0074] In a specific embodiment, the grinding assembly 20 includes two symmetrically arranged support portions 232. Each support portion 232 is provided with an installation groove 233, and the opening directions of the through openings of the two installation grooves 233 are opposite, that is, the two installation grooves 233 are centrosymmetric. It can be understood that different connection points of the weighing module 30 and the main bracket 10 are opposite, which can improve the connection stability between the grinding assembly 20 and the main bracket 10 and is also beneficial to ensuring the measurement accuracy of the weighing module 30.

[0075] Further, in an embodiment of the present invention, the material box 21, the grinding mechanism 22, and the grinding bracket 23 are arranged in sequence from top to bottom. The grinding mechanism 22 is installed on the grinding bracket 23, and the material box 21 is fixedly connected to the grinding bracket 23 through a support rod 24.

[0076] In the embodiment, the grinding bracket 23 further includes a fixing portion 25 extending outward from the edge of the main body portion 231. The fixing portion 25 can be provided with a support rod mounting hole 251 and a grinding mechanism mounting hole 252. One end of the support rod 24 can be installed in the support rod mounting hole 251, and the other end is connected to and supports the material box 21. Specifically, both ends of the support rod 24 can be connected to the material box 21 and the grinding bracket 23 through screws respectively. The screw between the support rod 24 and the grinding bracket 23 can be a shock-absorbing screw to reduce the vibration of the material box 21 caused during the operation of the grinding mechanism 22. There can be multiple support rods 24. Specifically, four support rods 24 are evenly arranged to provide stable support for the material box 21, so that the weight of the material box 21 and the material to be ground inside it acts completely on the weighing module 30, that is, the weight of the material box 21 and the material to be ground inside it can be completely detected by the weighing module 30, thus ensuring the accuracy of the detection by the weighing module 30.

[0077] The grinding mechanism 22 is fixed to the grinding bracket 23 by screws installed in the grinding mechanism mounting holes 252. Part of the grinding mechanism 22 is placed in the accommodation cavity of the main body 231 of the grinding bracket 23. At the same time, the support rod 24 also provides space for the installation of the grinding mechanism 22, and the overall structure is compact.

[0078] Further, in an embodiment of the present invention, the grinding device further includes a temperature sensing module 33 for detecting the temperature of the weighing module 30. The grinding device further includes a control module for calculating the weight of the material to be ground stored in the material box 21 according to the temperature detected by the temperature sensing module 33 and the actual weight detected by the weighing sensor.

[0079] In this embodiment, the temperature sensing module 33 is an NTC temperature sensing module 33, which is directly installed on the weighing module 30 and attached to one side of the weighing module, so that the temperature of the weighing module 30 can be accurately detected. The corresponding weight correction coefficient can be obtained according to the detected temperature and the weight can be corrected. The weighing module 30 is connected to the grinding assembly 20 and is close to the grinding mechanism 22. The operation of the grinding mechanism 22 causes a large change in the temperature near the weighing module 30, and the measurement accuracy of the weighing module 30 will be affected by the temperature. At different temperatures, the temperatures detected by the weighing module 30 are different. Therefore, by setting the temperature sensing module, the weight detected by the weighing module 30 can be corrected according to the detected temperature.

[0080] An embodiment of the present invention also provides a control method for a grinding device, and the control method for the grinding device includes the steps:

[0081] When a start signal is received, control the grinding device to run for a preset grinding duration and then stop running;

[0082] Obtain the first weight of the grinding assembly 20 before the grinding device runs, and the second weight of the grinding assembly 20 after the grinding device runs for a preset grinding duration; wherein, the grinding assembly 20 includes a grinding mechanism 22 and a material box 21 that cooperates with the grinding mechanism 22. The material box 21 is used to accommodate the material to be ground, the grinding mechanism 22 is used to receive the material to be ground from the material box 21 and grind the material to be ground, the grinding device further includes a main bracket 10, the weighing module 30 is arranged on the main bracket 10, and the grinding assembly 20 is suspended on the main bracket 10 through the weighing module 30;

[0083] Calculate and store the actual grinding weight of the grinding assembly 20 during the preset grinding duration, and the actual grinding weight is equal to the difference between the first weight and the second weight;

[0084] Judge whether to correct the preset grinding duration according to the actual grinding weight and the preset standard grinding weight.

[0085] The control method provided by this embodiment can be used to control the grinding device of any of the above embodiments.

[0086] In this embodiment, the weight obtained by the weighing module 30 is the weight of the grinding assembly 20 before and after grinding. The difference between the two is the weight of the to-be-ground material consumed. Therefore, the obtained weight of the consumed to-be-ground material is very accurate. In addition, in this embodiment, the operation of the grinding device is directly controlled by a preset grinding duration, and the weight of the consumed to-be-ground material is obtained before and after grinding, so as to correct the grinding duration. Compared with the traditional method of setting a weighing module 30 at the material box 21 or the powder receiving box to collect the weight and control the operation of the grinding device, the control is more precise, which can ensure the actual grinding amount, and there is no need to additionally set corresponding door structures and corresponding control devices on the material box 21 or the powder receiving box. The overall structure is simple and the cost is low.

[0087] In this embodiment, since the grinding efficiency of the grinding mechanism 22 changes during use, the weight of the ground material finally ground by the grinding mechanism 22 will change within the same preset grinding duration. Therefore, in order to ensure that the weight of the ground material ground by the grinding mechanism 22 within the preset grinding duration is maintained within the preset range, it is necessary to correct the preset grinding duration.

[0088] After each operation of the grinding device for the preset grinding duration, the weight of the grinding assembly 20 is detected by the weighing module 30 and stored in the memory for later use. After each grinding is completed, the actual grinding weight during this operation is calculated based on the weight change of the grinding assembly 20 detected by the weighing module 30 before and after operation, and it is judged whether it is necessary to correct the preset grinding duration, so as to ensure that the grinding amount during each operation of the grinding device for the preset grinding duration is within the preset range.

[0089] Further, in an embodiment of the present invention, the control method of the grinding device further includes:

[0090] If it is necessary to correct the preset grinding duration, the preset grinding duration is updated to the corrected preset grinding duration, and the corrected preset grinding duration = preset standard grinding weight / (actual grinding weight / preset grinding duration).

[0091] When correction is required, the actual grinding efficiency can be calculated first, where the actual grinding efficiency = actual grinding weight / preset grinding duration. Then, the corrected preset grinding duration is calculated based on the actual grinding efficiency and the preset standard grinding weight, and the corrected preset grinding duration = preset standard grinding weight / actual grinding efficiency. Finally, the preset grinding duration can be updated to the corrected preset grinding duration, and the grinding device is controlled to operate according to the corrected preset grinding duration during the next operation.

[0092] Specific examples are as follows. Assume that the preset standard grinding weight = 10g, and the initial grinding efficiency is 1.5g / s. Therefore, the initial preset grinding duration is 10g / 1.5g / s = 6.7s. However, when the grinding device is controlled to operate for 6.7s, if it is detected that after multiple consecutive runs, the actual grinding weight detected by the weighing module 30 has changed, then the preset grinding duration can be corrected. If the actual grinding weight detected in the last 6.7s is 14g, then the actual grinding efficiency of the grinding device can be calculated as 14g / 6.7s = 2.09g / s. Therefore, if the actual grinding amount is corrected to 10g, the preset grinding duration needs to be corrected to 10 / 2.09 = 4.78s. That is, the initially stored preset grinding duration of 6.7s can be replaced with the corrected preset grinding duration of 4.78s, and the next running time of the grinding device can be controlled to be 4.78s.

[0093] In this way, it can be ensured that the weight of the object to be ground by the grinding device within the preset grinding duration is within the preset range, the control is relatively accurate, and the overall structure is simple.

[0094] Further, in the control method of the grinding device provided by an embodiment of the present invention, the step of "judging whether to correct the grinding duration according to the actual grinding weight and the preset standard grinding weight" includes:

[0095] Judge whether the actual grinding weight has changed during the preset number of consecutive runs of the grinding device. When the actual grinding weight has changed during the preset number of consecutive runs, correction is performed.

[0096] In this embodiment, if it is detected that the actual grinding weight of the grinding device has changed continuously for a preset number of times, such as changing continuously twice, it can be known that the grinding efficiency of the grinding mechanism 22 has changed. Therefore, at this time, the preset grinding duration can be corrected.

[0097] In this way, it can be judged whether the grinding efficiency has changed and whether the preset grinding duration needs to be corrected only according to the actual grinding weight of the grinding device each time it runs, and the operation is simple.

[0098] Further, the control method of the grinding device provided by an embodiment of the present invention further includes the steps of:

[0099] Obtain the first initial weight of the grinding assembly 20 when the grinding device operates, and detect the first temperature of the weighing module 30 that obtains the first initial weight of the grinding assembly 20, and correct the first initial weight according to the first temperature to obtain the first weight; obtain the second initial weight of the grinding assembly 20 after the grinding device operates for the preset grinding duration, and detect the second temperature of the weighing module 30 that obtains the second initial weight of the grinding assembly, and correct the second initial weight according to the second temperature to obtain the second weight.

[0100] In this embodiment, since the weighing module 30 is connected to the grinding assembly 20 and is close to the grinding mechanism 22, the temperature of the weighing module 30 is liable to be affected, and thus the measured weight may deviate. A temperature sensing module 33 may be provided to detect the temperature of the weighing module 30 and correct the weight measured by the weighing module 30 according to the detected temperature.

[0101] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0102] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding device, characterized in that, it comprises: a main bracket; a grinding assembly, the grinding assembly comprising: a grinding mechanism and a material box cooperating with the grinding mechanism, the material box being used for accommodating an object to be ground, and the grinding mechanism being used for receiving the object to be ground from the material box and grinding the object to be ground; a weighing module for detecting the total weight of the grinding assembly; the weighing module is arranged on the main bracket, and the grinding assembly is suspended and supported on the main bracket through the weighing module.

2. The grinding device according to claim 1, characterized in that, the main bracket is provided with a receiving cavity for accommodating the grinding assembly, the grinding assembly comprises a supporting part, the weighing module comprises a pressure-bearing part fixedly installed below the supporting part, the pressure-bearing part is located between the supporting part and the main bracket, and the grinding assembly is supported on the weighing module through the supporting part.

3. The grinding device according to claim 2, characterized in that, the weighing module further comprises a connecting part, the connecting part is located outside the supporting part and above the main bracket, the connecting part is provided with a first fixing hole, and the weighing module is fixed to the main bracket through a fastener installed in the first fixing hole.

4. The grinding device according to claim 2, characterized in that, the supporting part and the pressure-bearing part are provided with second fixing holes for installing fasteners, and the weighing module is installed on the supporting part through fasteners installed in the second fixing holes; the supporting part is provided with an installation groove, the pressure-bearing part is installed in the installation groove, and the inner wall of the installation groove forms a limit for the weighing module.

5. The grinding device according to claim 3, characterized in that, the weighing module further comprises a deformation part and a weight detection module, the deformation part is located outside the supporting part and between the pressure-bearing part and the connecting part; the weight detection module is used for detecting the total weight of the grinding assembly according to the deformation amount of the deformation part.

6. The grinding device according to claim 5, characterized in that, the deformation part comprises a deformation hole, the axial direction of the deformation hole is perpendicular to the gravity direction, and the upper part and / or the lower part of the deformation part is provided with a reinforcing protrusion.

7. The grinding device according to claim 2, characterized in that, a reinforcing rib is arranged on the surface of the supporting part facing away from the weighing module.

8. The grinding device according to claim 7, characterized in that, the reinforcing rib comprises longitudinal ribs and transverse ribs arranged in a staggered manner, the supporting part is provided with a second fixing hole, the second fixing hole is located at the intersection of the longitudinal rib and the transverse rib, and the weighing module is fixed to the supporting part through a fastener installed in the second fixing hole.

9. The grinding device according to claim 3, characterized in that, It includes at least two of the weighing modules. The grinding assembly includes at least two supporting parts corresponding one-to-one to the at least two weighing modules. Each of the supporting parts is provided with a mounting groove formed by recessing upward from the lower surface. One side of the mounting groove is provided with a through opening. The weighing module passes through the through opening and the pressure-bearing part is placed in the mounting groove. The opening directions of the through openings of each mounting groove are different.

10. The grinding device according to claim 1, wherein, the grinding assembly further includes a grinding bracket. The material box, the grinding mechanism and the grinding bracket are arranged in sequence from top to bottom. The grinding mechanism is installed on the grinding bracket. The material box is fixedly connected to the grinding bracket through a support rod.

11. The grinding device according to claim 10, wherein, the grinding bracket includes a main body part and a fixing part extending outward from the edge of the main body part. The main body part has a receiving cavity. At least part of the grinding mechanism is placed in the receiving cavity. The fixing part is provided with a support rod mounting hole and a grinding mechanism mounting hole. One end of the support rod is installed in the support rod mounting hole, and the other end is connected to and supports the material box. The grinding mechanism has a fixing hole corresponding to the grinding mechanism mounting hole. The grinding mechanism is fixed to the grinding bracket through a fastener installed in the grinding mechanism mounting hole.

12. The grinding device according to claim 1, wherein, it further includes a weight prompt module for outputting weight prompt information of the material to be ground in the material box according to the weight detected by the weighing module.

13. A control method for a grinding device, wherein, it includes steps: When a start signal is received, control the grinding device to run for a preset grinding duration and then stop running; Obtain a first weight of the grinding assembly before the grinding device runs, and a second weight of the grinding assembly after the grinding device runs for the preset grinding duration; wherein, the grinding assembly includes a grinding mechanism and a material box cooperating with the grinding mechanism. The material box is used for accommodating the material to be ground. The grinding mechanism is used for receiving the material to be ground from the material box and grinding the material to be ground. The grinding device further includes a main bracket. The weighing module is arranged on the main bracket. The grinding assembly is suspended and supported on the main bracket through the weighing module; Calculate and store the actual grinding weight of the grinding assembly during the preset grinding duration. The actual grinding weight is equal to the difference between the first weight and the second weight; Judge whether to correct the preset grinding duration according to the actual grinding weight and the preset standard grinding weight.

14. The control method for the grinding device according to claim 13, wherein, it further includes: If it is necessary to correct the preset grinding duration, update the preset grinding duration to the corrected preset grinding duration. The corrected preset grinding duration = preset standard grinding weight / (actual grinding weight / preset grinding duration).

15. The control method for the grinding device according to claim 13, wherein, "Judging whether to correct the grinding duration according to the actual grinding weight and the preset standard grinding weight" includes: Judging whether the actual grinding weight changes during a preset number of consecutive runs of the grinding device, and correcting when the actual grinding weight changes during the preset number of consecutive runs.

16. The control method of the grinding device according to claim 13, characterized in that, further comprising: Obtaining a first initial weight of the grinding assembly before the grinding device operates, and detecting a first temperature of a weighing module for obtaining the first initial weight of the grinding assembly, and correcting the first initial weight according to the first temperature to obtain the first weight; Obtaining a second initial weight of the grinding assembly after the grinding device operates for a preset grinding duration, and detecting a second temperature of a weighing module for obtaining the second initial weight of the grinding assembly, and correcting the second initial weight according to the second temperature to obtain the second weight.

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