Weighing device for cooking robot

Abstract

The utility model discloses a weighing device for a cooking robot. The weighing device comprises a weighing disc (710) and a magnetic attraction mechanism. A weighing sensor (702) is arranged on the weighing disc; the magnetic attraction mechanism comprises an electromagnet (703) and a magnetic attraction plate (704) fixed on the bottom surface of the weighing disc; the electromagnet is fixed on a rack of the cooking robot through a connecting piece; a first gap H1 is formed between the magnetic plate and the weighing disc; the electromagnet is arranged in the first gap H1; when the electromagnet loses power, a second gap H2 is formed between the electromagnet and the magnetic suction plate; the weighing device for the cooking robot is simple and ingenious in structure, convenient and practical, and has a power-off protection function.

Description

Technical Field

[0001] The utility model relates to a weighing device for a cooking robot. Background Art

[0002] In recent years, many cooking robots have been launched on the market, bringing great convenience to restaurants. When cooking robots are working, they need to frequently add liquid seasonings (such as soy sauce, vinegar, sesame oil, cooking wine, etc.), so the liquid needs to be accurately measured.

[0003] In the prior art, the seasoning is generally measured by a weighing sensor, such as the multifunctional kitchen measuring seasoning machine with publication number CN202505196U, which includes a cabinet, an electronic scale tray, a liquid seasoning container, a weighing sensor, an electronic meter, a digital display screen and multiple function buttons. In addition, the utility model patent with publication number CN 204363838U discloses a liquid seasoning mechanism for an automatic seasoning machine, the core of which is a push-pull electromagnet located on the other side of the hose and corresponding to the limit stopper arranged on the support seat, and the electromagnet is used as a switch. The utility model with publication number CN 218279289 U discloses an intelligent cooking machine with a weighing function, and the invention with publication number CN 116421082 A, entitled a liquid seasoning automatic feeding device and a control method thereof, also uses a weighing sensor as a measuring tool.

[0004] The cooking robot contains many modules and needs to be as small as possible, so the modules are prone to conflict with each other. If the weighing sensor is fixed to the bottom of the seasoning box and is always in working state, once other parts interfere (such as collision, etc.), it is easy to cause damage to the weighing equipment. Therefore, it is necessary to design a new weighing device with power-off protection function. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a weighing device for a cooking robot. The weighing device for the cooking robot has a simple and ingenious structure, is easy to implement, and has a power-off protection function.

[0006] The technical solution of the utility model is as follows:

[0007] A weighing device for a cooking robot, characterized by comprising a weighing plate and a magnetic attraction mechanism;

[0008] A weighing sensor is provided on the weighing pan;

[0009] The magnetic attraction mechanism includes an electromagnet and a magnetic attraction plate fixed to the bottom surface of the weighing pan;

[0010] The electromagnet is fixed to the frame of the cooking robot through a connecting piece;

[0011] There is a first gap H1 between the magnetic plate and the weighing disc; the electromagnet is arranged in the first gap H1; when the electromagnet loses power, there is also a second gap H2 between the electromagnet and the magnetic plate; H1=H2+thickness of the electromagnet.

[0012] After the electromagnet is energized, it attracts the magnetic plate, causing the weighing plate to rise by a distance of H2. At this time, the weighing sensor contacts the bottom of the seasoning box, and the weighing sensor can detect the weight of the seasoning box. H2 is 1 to 20 mm.

[0013] H2 is 10mm.

[0014] The magnetic suction mechanism is connected to the frame through the weighing plate lifting drive mechanism. The role of the lifting mechanism (i.e. the weighing plate lifting drive mechanism): 1. The material box is pressed on the scale for a long time, which may affect the accuracy of the scale (the accuracy varies from manufacturer to manufacturer). 2. The suction range of the electromagnet is limited. With the lifting mechanism, the lifting distance can be expanded, which is beneficial to the overall layout of the weighing mechanism.

[0015] The weighing plate lifting drive mechanism adopts an electric push rod.

[0016] The weighing plate driving mechanism is an eccentric wheel lifting driving mechanism: the eccentric wheel lifting driving mechanism includes a lifting motor, a lifting shaft and an eccentric wheel connected to the output shaft of the lifting motor; the lifting motor is fixed on the heavy bottom plate on the frame; the output shaft of the lifting motor is connected to the transmission shaft, the transmission shaft is connected to the eccentric wheel, and when the eccentric wheel rotates, the lifting shaft rises and falls accordingly; the upper end of the lifting shaft is connected to the electromagnet, and the lower end of the lifting shaft is in contact with the eccentric wheel (further, in order to ensure smooth lifting, a fixed pulley is set at the lower end of the lifting shaft, and the fixed pulley is in contact with the eccentric wheel, and the transmission is smoother). Specifically, the lifting motor is fixed to the bottom plate of the frame of the cooking robot through a bearing seat (also called a motor bracket), or: the bearing seat is fixed to the weighing bottom plate, and the weighing bottom plate is connected to the frame of the cooking robot; at this time, only when the electromagnet is energized and the lifting shaft rises to the highest position, and the weighing plate can reach the highest position, at this time the weighing sensor is against the seasoning box, and weighing can begin. The lifting motor can only work when the electromagnet is energized. A lifting shaft guide frame is provided on the bottom plate of the frame; the lifting shaft is inserted into the shaft hole on the lifting shaft guide frame. The frame is provided with 4 guide columns (for providing vertical guidance for the weighing plate, and the weighing plate is set on the guide columns. Driven by the lifting motor and the electromagnet, the weighing plate can be raised and lowered along the guide columns.

[0017] A buffer pad is arranged at the bottom of the guide column.

[0018] Beneficial effects:

[0019] The weighing device for a cooking robot of the utility model adopts a magnetic attraction structure based on an electromagnet and a magnetic attraction plate. The advantage of this design is that when the power is suddenly cut off, the electromagnet will lose its attraction and the weighing plate will fall directly, which effectively prevents damage to the weighing device due to improper human operation. Therefore, the use of this solution can improve the safety and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the weighing device (main view cross-sectional view);

[0021] Figure 2 It is a schematic diagram of the overall structure of the weighing device (stereoscopic diagram);

[0022] Figure 3 This is a schematic diagram of the motor and electromagnet installation.

[0023] Figure 4 This is a schematic diagram of the installation of the motor and eccentric wheel.

[0024] Figure 5 This is a schematic diagram of the shape and size of the eccentric wheel;

[0025] Figure 6 This is a schematic diagram of the working state of the weighing device (the electromagnet is de-energized and the eccentric wheel is in the lowest position);

[0026] Figure 7 This is a schematic diagram of the working status of the weighing device (the electromagnet is energized and the eccentric wheel is in the lowest position).

[0027] Figure 8 This is a schematic diagram of the working state of the weighing device (the electromagnet is energized, the eccentric wheel is in the highest position, and it is in working state);

[0028] Fig. 9 This is a schematic diagram of the working status of the weighing device (the electromagnet is de-energized and the eccentric wheel is in the highest position).

[0029] Explanation of the numbers: 701 - seasoning box, 702 - weighing sensor, 703 - electromagnet, 704 - magnetic plate, 705 - lifting shaft, 706 - lifting motor, 707 - eccentric wheel, 708 - guide column, 709 - buffer pad; 710 - weighing plate, 711 - rotating shaft, 712 - fixed pulley, 713 - lifting shaft guide frame, 714 - bearing seat, 715 - bottom plate, 716 - bearing. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0031] Example 1: Figure 1-9 As shown, a weighing device for a cooking robot is characterized by comprising a weighing plate 710 and a magnetic attraction mechanism;

[0032] A weighing sensor 702 is provided on the weighing plate;

[0033] The magnetic attraction mechanism includes an electromagnet 703 and a magnetic attraction plate 704 fixed to the bottom surface of the weighing plate;

[0034] The electromagnet is fixed to the frame of the cooking robot through a connecting piece;

[0035] There is a first gap H1 between the magnetic plate and the weighing disc; the electromagnet is arranged in the first gap H1; when the electromagnet loses power, there is also a second gap H2 between the electromagnet and the magnetic plate; H1 = H2 + the thickness of the electromagnet;

[0036] After the electromagnet is energized, it attracts the magnetic plate, causing the weighing plate to rise by a distance of H2. At this time, the weighing sensor contacts the bottom of the seasoning box, and the weighing sensor can detect the weight of the seasoning box.

[0037] H2 is 10 mm. The stroke between the high and low positions of the eccentric roller is also 10 mm.

[0038] The magnetic attraction mechanism is connected with the frame through the weighing plate lifting drive mechanism.

[0039] The weighing plate lifting drive mechanism adopts an electric push rod.

[0040] The weighing plate driving mechanism is an eccentric wheel lifting driving mechanism: the eccentric wheel lifting driving mechanism includes a lifting motor 706, a lifting shaft 705 and an eccentric wheel 707 connected to the output shaft of the lifting motor; the upper end of the lifting shaft is connected to the electromagnet, and the lower end of the lifting shaft is in contact with the eccentric wheel; further, in order to ensure smooth lifting, a fixed pulley 712 is provided at the lower end of the lifting shaft, and the fixed pulley is in contact with the eccentric wheel, so that the transmission is smoother. Specifically, the lifting motor is fixed to the bottom plate 715 (also called the weighing bottom plate) of the frame of the cooking robot through a bearing seat 714 (also called a motor bracket).

[0041] At this time, only when the lifting shaft rises to the highest position and the electromagnet is energized can the weighing plate reach the highest position. At this time, the weighing sensor presses against the seasoning box and weighing can begin.

[0042] A lifting shaft guide frame 713 is provided on the bottom plate 715 of the frame; the lifting shaft is inserted into the shaft hole on the lifting shaft guide frame.

[0043] The frame is provided with four guide posts 708 for providing vertical guidance for the weighing plate, and the weighing plate is arranged on the guide posts. Driven by the lifting motor and the electromagnet, the weighing plate can be raised and lowered along the guide posts. The bottom plate is stationary relative to the frame.

[0044] A buffer pad 709 is provided at the bottom of the guide column. The function of the buffer pad is to prevent the guide column from hitting the bottom plate of the rack and generating abnormal noise when the lifting column falls or the power is suddenly cut off.

[0045] The working process of the equipment is as follows: the weighing device is equipped with a lifting mechanism, and the lifting part is connected to the electromagnet. When weighing is required, the electromagnet is energized, sucking the weighing plate, and the motor rotates, driving the weighing plate to rise through the eccentric wheel, holding the liquid seasoning box, and starting to measure. After the measurement is completed, the motor continues to rotate, the eccentric wheel resets, and finally the electromagnet loses power. The electromagnet can only lose power when the eccentric wheel rotates to the lowest point. And once the power is lost, the weighing plate and the electromagnet are decoupled, which is highly safe.

[0046] Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model should be included in the protection scope of this utility model.

Claims

1. A weighing device for a cooking robot, characterized in that: It includes a weighing plate (710) and a magnetic attraction mechanism; A weighing sensor (702) is provided on the weighing plate; The magnetic attraction mechanism comprises an electromagnet (703) and a magnetic attraction plate (704) fixed on the bottom surface of the weighing plate; The electromagnet is fixed to the frame of the cooking robot through a connecting piece; There is a first gap H1 between the magnetic plate and the weighing plate; the electromagnet is arranged in the first gap H1; when the electromagnet loses power, there is also a second gap H2 between the electromagnet and the magnetic plate; After the electromagnet is energized, it is attracted to the magnetic plate, causing the weighing plate to rise a distance of H2.

2. The weighing device for a cooking robot according to claim 1, characterized in that: H2 is 1~20mm.

3. The weighing device for a cooking robot according to claim 2, characterized in that: H2 is 10mm.

4. The weighing device for a cooking robot according to claim 1, characterized in that: The magnetic attraction mechanism is connected with the frame through the weighing plate lifting drive mechanism.

5. The weighing device for a cooking robot according to claim 4, characterized in that: The weighing plate lifting drive mechanism adopts an electric push rod.

6. The weighing device for a cooking robot according to claim 4, characterized in that: The weighing plate driving mechanism is an eccentric wheel lifting driving mechanism: the eccentric wheel lifting driving mechanism comprises a lifting motor (706), a lifting shaft (705) and an eccentric wheel (707) connected to the output shaft of the lifting motor; the upper end of the lifting shaft is connected to the electromagnet, and the lower end of the lifting shaft is in contact with the eccentric wheel.

7. The weighing device for a cooking robot according to claim 6, characterized in that: A lifting shaft guide frame (713) is provided on the bottom plate (715) of the frame; the lifting shaft is inserted into the shaft hole on the lifting shaft guide frame.

8. The weighing device for a cooking robot according to any one of claims 1 to 7, characterized in that: The frame is provided with four guide posts (708) for providing vertical guidance for the weighing plate, and the weighing plate is arranged on the guide posts.

9. The weighing device for a cooking robot according to claim 8, characterized in that: A buffer pad (709) is provided at the bottom of the guide column.

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