Precise weighing device of full-automatic coffee machine

Abstract

The utility model relates to the technical field of coffee machines, and particularly discloses an accurate weighing device of a full-automatic coffee machine, which comprises a powder receiving bin used for receiving ground coffee powder; the cantilever weighing sensor is mounted on one side of the powder receiving bin and used for detecting the weight of the coffee powder in the powder receiving bin in real time and outputting a feedback signal; the motor is connected with the powder blocking piece through a transmission shaft, and the powder blocking piece is used for controlling opening and closing of the powder receiving bin; the proximity sensor is arranged on the side of the powder receiving bin and used for detecting the opening and closing angle of the powder blocking piece; the weight of coffee powder in the powder receiving bin is monitored in real time through the cantilever weighing sensor, data are accurately fed back to a control system, and accurate control over the powder amount is guaranteed; the induction piece and the proximity sensor work cooperatively, and the opening and closing angle of the powder blocking piece can be accurately controlled. By detecting the position of the induction piece in real time, the control system can adjust the state of the powder blocking piece in time, accurate control over the powder outlet amount is achieved, and the strict requirements for the powder amount in different coffee making processes are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, concretely is a full -automatic coffee machine accurate weighing device. BACKGROUND

[0002] The powder amount control technology of the current full -automatic coffee machine adopts the grinding time estimation or manual intervention weighing mode. The former is easy to cause the powder amount fluctuation (error range reaches above 1g) due to the grinding cutter head state, coffee bean characteristics and environmental factors, and is difficult to meet the requirement of precision (within 0.2g) for the high -quality coffee production. The latter can improve the accuracy, but relies on manual operation, and the efficiency is low and cannot adapt to the continuous production scene. In addition, the part of the integrated weighing equipment has the problems of powder accumulation and residue due to the complex structure (such as redundant transmission parts or closed powder bin), and the weighing precision is significantly reduced after long -term use, and the maintenance is difficult. In the prior art, the opening angle of the powder baffle lacks a dynamic control mechanism, and powder jamming or incomplete powder discharge is easy to cause, frequent shutdown cleaning is needed, and the production efficiency is further affected. Based on this, the application provides a full -automatic coffee machine accurate weighing device. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a full -automatic coffee machine accurate weighing device, which solves the problem that the powder amount control technology of the full -automatic coffee machine in the prior art adopts the grinding time estimation or manual intervention weighing mode.

[0004] The full -automatic coffee machine accurate weighing device of the utility model, including:

[0005] The powder receiving bin is used for receiving the ground coffee powder.

[0006] The cantilever weighing sensor is installed on one side of the powder receiving bin and is used for real -time detection of the weight of the coffee powder in the powder receiving bin and output of the feedback signal.

[0007] The motor is connected with the powder baffle through the transmission shaft, and the powder baffle is used for controlling the opening and closing of the powder receiving bin.

[0008] The proximity sensor is arranged on the side of the powder receiving bin and is used for detecting the opening angle of the powder baffle.

[0009] As a further improvement of the utility model, the powder baffle is adapted to the bottom of the powder receiving bin at a preset angle.

[0010] As a further improvement of the utility model, one side of the powder baffle is connected with the inductive sheet through the transmission shaft.

[0011] As a further improvement of the utility model, the inductive sheet triggers the proximity sensor when rotating with the transmission shaft, and is used for controlling the opening angle of the powder baffle.

[0012] As a further improvement of the utility model, the inner wall of the powder receiving bin is provided with a powder accumulation prevention structure, which comprises an inclined flow guide surface and / or a vibration auxiliary component.

[0013] As a further improvement of the utility model, the proximity sensor is arranged below the motor and has a fixed interval with one side of the powder blocking sheet.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] The utility model discloses a cantilever weighing sensor is monitored coffee powder weight in real time in powder receiving bin, and accurate feedback data is given to control system, ensure accurate control to powder volume;

[0016] And the inductive sheet cooperates with the proximity sensor to work, and the opening and closing angle of the powder blocking sheet can be accurately controlled. Through real-time detection of the inductive sheet position, the control system can adjust the powder blocking sheet state in time, realize accurate control of the powder output, meet the strict requirements of different coffee making on the powder volume, and the motor can be rotated and beaten multiple times to make the powder in the powder bin completely fall down, so that the weighing accuracy can be maintained when the machine is used multiple times.

[0017] The preset angle of the powder blocking sheet is adapted to the bottom of the powder receiving bin, so that the coffee powder flows smoothly and is sealed well during the powder receiving and discharging process, powder leakage and waste are avoided, and the accuracy of the powder volume control is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a three-dimensional structure schematic view of the utility model weighing device.

[0020] In the figure: 1, powder receiving bin;2, cantilever weighing sensor;3, motor;4, transmission shaft;5, powder blocking sheet;6, proximity sensor;7, inductive sheet. DETAILED DESCRIPTION

[0021] The following will disclose multiple embodiments of the utility model with drawings, for the purpose of clear description, many details on the real object will be described in the following description. However, it should be understood that these details on the real object should not be used to limit the utility model. That is, in some embodiments of the utility model, these details on the real object are unnecessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be drawn in a simple schematic way in the drawings.

[0022] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that a person skilled in the art can realize, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0023] Please refer to Figure 1 The powder weight control technology of the existing full-automatic coffee machine mainly has the following problems:

[0024] Dependence on grinding time control: the powder weight is indirectly estimated by adjusting the working time of the coffee bean grinder, which is easily disturbed by factors such as wear of the grinding knife, hardness of the coffee beans, and environmental temperature and humidity, resulting in significant weighing error (error can reach ±1g or more), which cannot meet the high-precision requirement.

[0025] Manual weighing is inefficient: coffee beans need to be weighed manually and then poured into the coffee bean grinder, which is complicated and difficult to realize continuous automatic production, increasing labor cost and time loss.

[0026] Defects of existing weighing devices: although some models integrate weighing function, the powder bin structure is complex, powder residues are easy to accumulate, and the precision decreases after multiple uses; at the same time, it is difficult to maintain and disassemble, and the maintenance cost is high. For example, the opening angle of the traditional powder stop sheet 5 is uncontrollable, powder is easy to be stuck or not completely discharged, and frequent cleaning is required. Based on this, the application provides a precise weighing device for a full-automatic coffee machine, which comprises: a powder receiving bin 1 for receiving ground coffee powder;

[0027] A cantilever weighing sensor 2 is installed on one side of the powder receiving bin 1 for real-time detection of the weight of the coffee powder in the powder receiving bin 1 and output of a feedback signal;

[0028] A motor 3 is connected with the powder stop sheet 5 through a transmission shaft 4, and the powder stop sheet 5 is used to control the opening and closing of the powder receiving bin 1;

[0029] A proximity sensor 6 is arranged on the side of the powder receiving bin 1 for detecting the opening and closing angle of the powder stop sheet 5.

[0030] The powder receiving bin 1 is made of high-quality food-grade stainless steel material, the inside is finely polished, and the surface is smooth, which can effectively reduce the residue of coffee powder. The shape of the powder receiving bin 1 is designed as a funnel with the top being wide and the bottom being narrow, and the top opening is large, which is convenient for accurately receiving the ground coffee powder falling from the grinder. At the bottom of the powder receiving bin 1, an inclined bottom surface is designed, so that the coffee powder can flow more smoothly to the outlet, avoiding the accumulation of powder.

[0031] The cantilever weighing sensor 2 is firmly installed on one side of the powder receiving bin 1. The sensor adopts high-precision strain gauge technology and can detect the weight of coffee powder in the powder receiving bin 1 in real time and accurately. The sensor is connected with the control system of the coffee machine through data line or wireless signal. When the weight of coffee powder in the powder receiving bin 1 changes, the feedback signal is immediately transmitted to the control system. For example, when the powder receiving starts, the sensor detects that the weight gradually increases and timely feedbacks the change information to the control system for subsequent accurate control.

[0032] The motor 3 selects a high-performance stepping motor 3 with precise control performance and stable running state. The motor 3 is tightly connected with the powder blocking sheet 5 through the transmission shaft 4. The transmission shaft 4 is made of high-strength metal material to ensure that it will not deform or be damaged during frequent rotation. The powder blocking sheet 5 is installed at the outlet of the powder receiving bin 1. Its shape matches the outlet of the powder receiving bin 1 and can completely seal the outlet. When the motor 3 receives the instruction from the control system, it drives the transmission shaft 4 to rotate, thereby driving the powder blocking sheet 5 to open or close the powder receiving bin 1. For example, when the weight of coffee powder in the powder receiving bin 1 reaches the set value, the control system sends an instruction to the motor 3, and the motor 3 drives the powder blocking sheet 5 to close and stop powder receiving.

[0033] The proximity sensor 6 is arranged on the side of the powder receiving bin 1 and detects the opening and closing angle of the powder blocking sheet 5 through high-precision sensing technology. The sensor can monitor the position of the powder blocking sheet 5 in real time and feedback the detected angle information to the control system. When the proximity sensor 6 is installed, accurate positioning and debugging are performed to ensure that it can accurately detect the opening and closing state of the powder blocking sheet 5. For example, when the powder blocking sheet 5 is opened, the proximity sensor 6 can timely detect the opening angle and feedback the information to the control system for adjustment according to the actual situation.

[0034] In order to improve the accuracy of the weighing and rearrangement, a control system is also provided. The system takes a microprocessor as the core and can accurately control and coordinate various components. The control system receives feedback signals from the cantilever weighing sensor 2 and the proximity sensor 6 and analyzes and processes them according to the preset program and parameters. For example, when the weight of coffee powder in the powder receiving bin 1 approaches the set value, the control system adjusts the rotation speed of the motor 3 according to the opening and closing angle of the powder blocking sheet 5 detected by the proximity sensor 6, so as to accurately control the opening and closing degree of the powder blocking sheet 5 and ensure that the weight of coffee powder in the powder receiving bin 1 accurately reaches the set value.

[0035] The cantilever load cell 2 can detect the weight of the coffee powder in the powder receiving bin 1 in real time and accurately, and transmit the feedback signal to the control system in time. Through this real-time monitoring and feedback mechanism, the control system can accurately control the opening and closing of the powder blocking piece 5 according to the actual weight, so as to control the powder amount error in a very small range and meet the requirement of fine coffee production on powder amount accuracy (within ±0.2g).

[0036] The proximity sensor 6 can detect the opening and closing angle of the powder blocking piece 5 in real time, and the control system can accurately adjust the opening and closing of the powder blocking piece 5 according to this information, so as to avoid the problems of powder blocking and incomplete powder discharge caused by improper opening and closing of the powder blocking piece 5, and further improve the accuracy of powder amount control.

[0037] The device realizes the automation of powder amount control, and does not need manual intervention in weighing, which greatly improves the work efficiency. In the continuous production scene, the powder amount control can be quickly and accurately completed every time, which meets the high yield demand of coffee shops and other places.

[0038] Since the opening and closing angle of the powder blocking piece 5 can be dynamically adjusted, the problems of powder blocking and incomplete powder discharge are reduced, the frequency of shutdown due to cleaning the equipment is reduced, and the production efficiency is further improved.

[0039] The powder blocking piece 5 is adapted to the bottom of the powder receiving bin 1 at a preset angle.

[0040] One side of the powder blocking piece 5 is connected with an inductive sheet 7 through a transmission shaft 4.

[0041] The inductive sheet 7 triggers the proximity sensor 6 when the transmission shaft 4 rotates, which is used to control the opening and closing angle of the powder blocking piece 5.

[0042] The inner wall of the powder receiving bin 1 is provided with a powder accumulation prevention structure, including an inclined flow guide surface and / or a vibration auxiliary component.

[0043] The proximity sensor 6 is arranged below the motor 3, and one end thereof maintains a fixed distance with one side of the powder blocking piece 5.

[0044] One side of the powder blocking piece 5 is connected with an inductive sheet 7 through a smooth transmission shaft 4, so as to ensure that the inductive sheet 7 can rotate stably and smoothly with the transmission shaft 4. The proximity sensor 6 adopts a high-precision capacitive sensor and is arranged below the motor 3. During installation, the position of the proximity sensor 6 is accurately adjusted so that one end thereof maintains a fixed distance with one side of the powder blocking piece 5.

[0045] When the motor 3 drives the transmission shaft 4 to rotate, the baffle 5 is opened or closed, and the induction sheet 7 also rotates. When the induction sheet 7 rotates to the induction range of the proximity sensor 6, the proximity sensor 6 will immediately detect the position change of the induction sheet 7 and transmit a signal to the control system of the coffee machine. For example, when the baffle 5 needs to be opened to receive coffee powder, the motor 3 drives the transmission shaft 4 and the induction sheet 7 to rotate, and the proximity sensor 6 detects that the induction sheet 7 has reached a certain position, indicating that the baffle 5 has been opened to the appropriate angle. The control system stops the motor 3 from rotating, achieving precise control of the opening and closing angle of the baffle 5. The motor 3 can be rotated multiple times to beat the powder bin, allowing the coffee powder hanging in the powder bin to fall completely, and ensuring the weighing accuracy of the machine during multiple uses.

[0046] The inner wall of the powder receiving bin 1 adopts a combination of inclined flow guide surface and vibration auxiliary component to prevent powder accumulation. For example, the inclined flow guide surface is designed with a 15° inclination angle from the top to the bottom of the powder receiving bin 1. This design allows the coffee powder to flow more smoothly to the outlet where the baffle 5 is located under the action of gravity.

[0047] The vibration auxiliary component consists of a small vibration motor 3 and a vibration sheet. The vibration motor 3 is installed on the outer wall of the powder receiving bin 1, and the vibration sheet is connected to the inner wall of the powder receiving bin 1 through a flexible connector. When there is a sign of powder accumulation in the powder receiving bin 1, the control system will trigger the vibration motor 3 to work. The vibration generated by the vibration motor 3 is transmitted to the inner wall of the powder receiving bin 1 through the vibration sheet, causing the coffee powder to loosen and continue to flow downward, preventing the accumulation of coffee powder on the inner wall of the powder receiving bin 1.

[0048] The baffle 5 is pre-set at an angle that matches the bottom of the powder receiving bin 1, ensuring smooth flow and good sealing of the coffee powder during powder receiving and powder discharging, preventing coffee powder leakage and waste, and helping to improve the accuracy of powder control.

[0049] The cooperation of the induction sheet 7 and the proximity sensor 6 can accurately control the opening and closing angle of the baffle 5. By real-time detection of the position of the induction sheet 7, the control system can timely adjust the state of the baffle 5 according to the needs, so that the powder output can be accurately controlled according to the preset weight, meeting the strict requirements of high-quality coffee production on powder accuracy.

[0050] The inclined flow guide surface of the inner wall of the powder receiving bin 1 uses the principle of gravity to make the coffee powder naturally slide down, reducing the residence and accumulation of powder on the wall.

[0051] The vibration auxiliary component can be started in time when there is a sign of powder accumulation, and the powder is loosened and continues to flow through vibration, further preventing the occurrence of powder accumulation. This not only ensures the accuracy of powder control, but also reduces equipment failures and maintenance costs caused by powder accumulation, improving the stability and service life of the equipment.

[0052] The proximity sensor 6 is arranged below the motor 3 and keeps a fixed distance with the dust baffle 5, and the reasonable layout makes the structure of the whole device more compact and reduces the space occupied by the device. At the same time, the fixed distance ensures that the proximity sensor 6 can stably and accurately detect the position of the sensing sheet 7, improves the reliability of the opening and closing angle control of the dust baffle 5, and further improves the performance and efficiency of the whole precise weighing device.

[0053] The above merely describes the implementation manners of the present application and is not intended to limit the present application. The present application can be changed and modified in various ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A precision weighing device for a fully automatic coffee machine, characterized in that, The application relates to a coffee powder receiving device, which comprises the following parts: a coffee powder receiving bin (1) for receiving ground coffee powder; a cantilever load sensor (2) installed on one side of the coffee powder receiving bin (1) for detecting the weight of the coffee powder in the coffee powder receiving bin in real time and outputting a feedback signal; a motor (3) connected with a coffee powder blocking sheet (5) through a transmission shaft (4), wherein the coffee powder blocking sheet (5) is used for controlling the opening and closing of the coffee powder receiving bin; a proximity sensor (6) arranged on the side of the coffee powder receiving bin (1) for detecting the opening and closing angle of the coffee powder blocking sheet.

2. A precision weighing device for a fully automatic coffee machine according to claim 1, characterized in that: The coffee powder blocking sheet (5) is adapted to the bottom of the coffee powder receiving bin (1) at a preset angle.

3. The precise weighing device for a fully automatic coffee machine according to claim 1, characterized in that: One side of the coffee powder blocking sheet (5) is connected with an inductive sheet (7) through the transmission shaft (4).

4. A precision weighing device for a fully automatic coffee machine according to claim 3, characterized in that: The inductive sheet (7) triggers the proximity sensor (6) when the transmission shaft (4) rotates, and is used for controlling the opening and closing angle of the coffee powder blocking sheet.

5. The precise weighing device for a fully automatic coffee machine according to claim 1, characterized in that: The inner wall of the coffee powder receiving bin (1) is provided with a powder accumulation prevention structure, which comprises an inclined flow guide surface and / or a vibration auxiliary component.

6. The precise weighing device for a fully automatic coffee machine according to claim 1, characterized in that: The proximity sensor (6) is arranged below the motor, and one end of the proximity sensor (6) is kept at a fixed distance from one side of the coffee powder blocking sheet (5).

Images