Rapid weighing and grading equipment

Abstract

The utility model discloses rapid weighing and grading equipment, which comprises a rack, a turntable, a first driving device, a plurality of weighing devices and a control device, and is characterized in that the rack is provided with a feeding station and at least two discharging stations; the turntable is rotatably mounted on the rack; the first driving device is arranged on the rack and is used for driving the turntable to rotate; the plurality of weighing devices are installed on the rotating disc, each weighing device is provided with a receiving hopper, all the receiving hoppers are circumferentially distributed around the rotating axis of the rotating disc, and a discharging mechanism is arranged between each receiving hopper and the rotating disc; all the discharging stations and the feeding stations are distributed around the rotating axis of the rotating disc, gaps exist between the feeding stations and the adjacent discharging stations, and the rotating disc can drive any one receiving hopper to move from the feeding station to any one discharging station. According to the rapid weighing and grading equipment provided by the utility model, the weighing accuracy can be ensured while the detection efficiency is ensured, and rapid and accurate weighing and grading of products are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing, and particularly relates to a rapid weighing and grading device. Background Art

[0002] In the prior art, when the production line conducts on-line weighing detection and sorting of products such as bags and bottles, generally, the product conveying device sends the products to the on-line weighing device for on-line weighing, and then the on-line weighing device conveys the weighed products to the subsequent sorting mechanism, and the sorting mechanism sorts out products of different grades according to the weight of the products. In actual production, when the production line generally conveys products to the on-line weighing device for weighing at a relatively high frequency (more than two per second), the weighing time of each product by the on-line weighing device is short, and the weighing accuracy cannot be guaranteed. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a rapid weighing and grading device, which can ensure the weighing accuracy while ensuring the detection efficiency, and realize rapid and accurate weighing and grading of products.

[0004] A rapid weighing and grading device according to an embodiment of the utility model includes a frame, a turntable, a first driving device, a plurality of weighing devices and a control device. The frame is provided with a feeding station and at least two discharging stations; the turntable is rotatably installed on the frame, and the rotation axis of the turntable is along the vertical direction; the first driving device is arranged on the frame, and the first driving device is used for driving the turntable to rotate; a plurality of the weighing devices are installed on the turntable, each weighing device is provided with a receiving hopper, all the receiving hoppers are circumferentially distributed around the rotation axis of the turntable, a discharging mechanism is arranged between the receiving hopper and the turntable, and the discharging mechanism is used for driving the receiving hopper to discharge materials; the control device is electrically connected or communicatively connected with the first driving device, all the weighing devices and all the discharging mechanisms; wherein, all the discharging stations and the feeding station are distributed around the rotation axis of the turntable, the turntable can drive any one of the receiving hoppers to move from the feeding station to any one of the discharging stations, there is a gap between the feeding station and the adjacent discharging station, and the control device can control the corresponding discharging mechanism to work when the corresponding receiving hopper moves to the corresponding discharging station according to the detection result of the weighing device.

[0005] A rapid weighing and grading device according to an embodiment of the present utility model has at least the following beneficial effects: In the rapid weighing and grading device provided by the present utility model, during the rotation of the turntable, each receiving hopper can receive products input from the feeding station at the feeding station, then discharge the products at the corresponding discharging station according to the detection result of the weighing device, and finally return to the feeding station, thus continuously circulating. Products of different weights can be discharged to different discharging stations according to the detection results, realizing product grading. Among them, the detection frequency of the rapid weighing and grading device is determined by the number of receiving hoppers passing through the feeding station per unit time. And during the process of each receiving hopper moving from the feeding station to the corresponding discharging station for discharging, the corresponding weighing device can weigh the products in the corresponding receiving hopper. Therefore, the weighing time of the products is related to the rotation angle when the receiving hopper rotates from the feeding station to the corresponding discharging station, and the weighing time of the products is not directly related to the detection frequency. At the same detection frequency, by simply increasing the interval between the feeding station and the adjacent discharging station, the weighing time of each product can be increased, thereby ensuring weighing accuracy while ensuring detection efficiency. In addition, the more weighing devices installed on the turntable, the more receiving hoppers pass through the feeding station per unit time at the same rotation speed of the turntable, that is, the higher the detection frequency. Through the above settings, the rapid weighing and grading device provided by the present utility model can achieve rapid and accurate weighing and grading of products.

[0006] According to some embodiments of the present utility model, along the rotation direction of the turntable, the angle turned by the receiving hopper from the feeding station to the first discharging station is greater than or equal to 45 degrees.

[0007] According to some embodiments of the present utility model, the receiving hopper is located on the outer side of the turntable.

[0008] According to some embodiments of the present utility model, the weighing device includes a cantilever beam weighing sensor. One end of the cantilever beam weighing sensor is fixedly installed on the turntable, and the other end is a suspended end suspended relative to the turntable. The corresponding receiving hopper is installed at the suspended end of the corresponding cantilever beam weighing sensor.

[0009] According to some embodiments of the present utility model, the receiving hopper includes two mounting rods arranged at intervals and two valve plates, and a reset structure is arranged between the two valve plates; wherein, the upper ends of the two valve plates are respectively mounted on the two mounting rods, the mounting rods are rotatably mounted on the suspended ends of the corresponding cantilever beam weighing sensors, or the upper ends of the two valve plates are respectively rotatably mounted on the two mounting rods, and the mounting rods are mounted on the suspended ends of the corresponding cantilever beam weighing sensors; wherein, the blanking mechanism can drive the corresponding two valve plates to rotate relatively to open, and the reset structure can drive the corresponding two valve plates to rotate relatively to close. Baffles are arranged at one end of the valve plate close to the weighing sensor and at one end far from the weighing sensor, or baffles are arranged on the mounting rod on one side of the valve plate close to the weighing sensor and on one side far from the weighing sensor.

[0010] According to some embodiments of the present utility model, the valve plate or the mounting rod is connected with a swing arm, the swing arm is located outside the valve plate, and the blanking mechanism drives the valve plate to rotate by pushing the swing arm.

[0011] According to some embodiments of the present utility model, a fixing plate is mounted on the turntable, the fixing plate is located above the receiving hopper, and all the blanking mechanisms are mounted on the fixing plate.

[0012] According to some embodiments of the present utility model, a protective cover is mounted on the turntable, the protective cover covers above all the weighing devices, and the fixing plate and all the blanking mechanisms are located inside the protective cover.

[0013] According to some embodiments of the present utility model, an annular protective shell is arranged on the frame, all the receiving hoppers are located inside the protective shell, and the protective shell is located above the blanking station.

[0014] According to some embodiments of the present utility model, it includes a feeding conveying mechanism, the discharging end of the feeding conveying mechanism is located at the feeding station, and a receiving chute is arranged at each blanking station.

[0015] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic diagram of a rapid weighing and grading device according to an embodiment of the present utility model;

[0018] Figure 2 For Figure 1 The top view of a fast weighing and grading device shown;

[0019] Figure 3 For Figure 1 The exploded view of a fast weighing and grading device shown;

[0020] Figure 4 For Figure 1 The schematic diagram of the weighing device and the receiving hopper of a fast weighing and grading device shown.

[0021] Reference numerals:

[0022] Frame 100, turntable 200, first driving device, weighing device 310, suspended end 311, receiving hopper 320, mounting rod 321, valve plate 322, baffle 323, swing arm 324, reset structure 325, blanking mechanism 400, control device 500, fixing plate 510, protective cover 520, protective shell 530, feeding conveying mechanism 600, receiving chute 700. Detailed implementation manners

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0026] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" shall be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0027] Referring to Figures 1 to 3 , a rapid weighing and grading device according to an embodiment of the present utility model includes a frame 100, a turntable 200, a first driving device, a plurality of weighing devices 310, and a control device 500. The frame 100 is provided with a feeding station and at least two discharging stations; the turntable 200 is rotatably installed on the frame 100, and the rotation axis of the turntable 200 is in the vertical direction; the first driving device is arranged on the frame 100 and is used to drive the turntable 200 to rotate; a plurality of weighing devices 310 are installed on the turntable 200, and each weighing device 310 is provided with a receiving hopper 320. All the receiving hoppers 320 are circumferentially distributed around the rotation axis of the turntable 200. A discharging mechanism 400 is arranged between the receiving hopper 320 and the turntable 200, and the discharging mechanism 400 is used to drive the receiving hopper 320 to discharge materials; the control device 500 is electrically connected or communicatively connected to the first driving device, all the weighing devices 310, and all the discharging mechanisms 400; wherein, all the discharging stations and the feeding station are distributed around the rotation axis of the turntable 200. The turntable 200 can drive any one of the receiving hoppers 320 to move from the feeding station to any one of the discharging stations. There is a gap between the feeding station and the adjacent discharging station. The control device 500 can control the corresponding discharging mechanism 400 to work when the corresponding discharging structure moves to the corresponding discharging station according to the detection result of the weighing device 310.

[0028] The rapid weighing and grading equipment provided by the present utility model, during the rotation of the turntable 200, each receiving hopper 320 can receive the products input from the feeding station at the feeding station, then discharge the products at the corresponding discharging station according to the detection result of the weighing device 310, and finally return to the feeding station, thus continuously circulating. Products of different weights can be discharged to different discharging stations according to the detection result, realizing product grading. Among them, the detection frequency of the rapid weighing and grading equipment is determined by the number of receiving hoppers 320 passing through the feeding station per unit time. And during the process of each receiving hopper 320 moving from the feeding station to the corresponding discharging station for discharging, the corresponding weighing device 310 can weigh the products in the corresponding receiving hopper 320. Therefore, the weighing time of the product is related to the rotation angle when the receiving hopper 320 rotates from the feeding station to the corresponding discharging station, and the weighing time of the product is not directly related to the detection frequency. At the same detection frequency, by simply increasing the interval between the feeding station and the adjacent discharging station, the weighing time of each product can be increased, so as to ensure the weighing accuracy while ensuring the detection efficiency. In addition, the more weighing devices 310 installed on the turntable 200, the more receiving hoppers 320 pass through the feeding station per unit time at the same rotation speed of the turntable 200, that is, the detection frequency is higher. Through the above settings, the rapid weighing and grading equipment provided by the present utility model can achieve rapid and accurate weighing and grading of products.

[0029] Referring to Figures 1 to 3 , in some embodiments, the number of discharging stations can be set to more than 3. Thus, the rapid weighing and grading equipment can grade the products into more than 3 grades according to the detection result. In addition, when the number of grades required for the products is less than the number of discharging stations, the corresponding number of discharging stations can be selected from all the discharging stations according to the actual situation. When different discharging stations are selected, the weighing time of the products will increase or decrease accordingly.

[0030] In the specific implementation process, by controlling the rotation speed of the turntable 200, the weighing device 310 installed on the turntable 200, and the rotation angle of the receiving hopper 320 from the loading station to the first unloading station, the detection frequency can be increased and the weighing time of a single product can be increased, so as to realize rapid and accurate weighing and grading of products. For example, in some embodiments, the number of weighing devices 310 installed on the turntable 200 is 16, the rotation speed of the turntable 200 is one revolution in 4 seconds, and the rotation angle of the receiving hopper 320 from the loading station to the first unloading station is 90 degrees. At this time, the detection frequency is 4 per second, and the weighing time of each product is greater than or equal to 1 second; if it is necessary to increase the weighing time of each product, a suitable unloading station can be selected from multiple unloading stations, so that the rotation angle of the receiving hopper 320 from the loading station to the first selected unloading station is not less than 180 degrees. At this time, the weighing time of each product is greater than or equal to 2 seconds; if it is necessary to further increase the detection frequency, the number of weighing devices 310 installed on the turntable 200 can be increased to 24. Thus, with the rotation speed of the turntable 200 unchanged, the detection frequency can be increased to 6 per second. In addition, without changing the structure of the rapid weighing and grading equipment, the detection frequency can be increased by increasing the rotation speed of the turntable 200. At the same time, in order to ensure that the weighing time of each product is sufficient, a suitable unloading station can be selected from multiple unloading stations. For example, the number of weighing devices 310 installed on the turntable 200 is 16. If the rotation speed of the turntable 200 is one revolution in 2 seconds, the detection frequency is 8 per second at this time, and a suitable unloading station can be selected from multiple unloading stations, so that the rotation angle of the receiving hopper 320 from the loading station to the first selected unloading station is not less than 180 degrees, so as to ensure that the weighing time of the product is greater than or equal to 1 second.

[0031] Referring to Figure 2 , according to some embodiments of the present invention, along the rotation direction of the turntable 200, the rotation angle of the receiving hopper 320 from the loading station to the first unloading station is greater than or equal to 90 degrees. Thus, the weighing time of the product in each receiving hopper 320 is greater than or equal to one-fourth of the time taken for the turntable 200 to make one revolution. By adopting this layout, the comprehensive benefit of the rapid weighing and grading equipment between cost and function can be better.

[0032] Referring to Figures 1 to 3 , according to some embodiments of the present invention, the receiving hopper 320 is located outside the turntable 200. Thus, the turntable 200 can avoid the unloading structure on the receiving hopper 320.

[0033] Of course, in some other embodiments, the receiving hopper 320 may also be disposed above the turntable 200. At this time, an avoidance opening may be formed on the turntable 200 to avoid the feeding structure of the receiving hopper 320, so as to prevent the turntable 200 from blocking the feeding of the receiving hopper 320.

[0034] Referring to Figure 3 and Figure 4 , according to some embodiments of the present invention, the weighing device 310 includes a cantilever beam load cell. One end of the cantilever beam load cell is fixedly installed on the turntable 200, and the other end is a suspended end 311 that is suspended relative to the turntable 200. The corresponding receiving hopper 320 is installed at the suspended end 311 of the corresponding cantilever beam load cell. With the above arrangement, when the product is conveyed into the receiving hopper 320, the weighing device 310 can weigh the product in the receiving hopper 320.

[0035] Of course, in the specific implementation process, the weighing device 310 may also use a pressure sensor to detect the weight of the product.

[0036] Referring to Figure 4 , according to some embodiments of the present invention, the receiving hopper 320 includes two spaced-apart mounting rods 321 and two valve plates 322, and a reset structure 325 is provided between the two valve plates 322; wherein, the upper ends of the two valve plates 322 are respectively mounted on the two mounting rods 321, the mounting rods 321 are rotatably mounted at the suspended end 311 of the corresponding cantilever beam load cell, or the upper ends of the two valve plates 322 are respectively rotatably mounted on the two mounting rods 321, and the mounting rods 321 are mounted at the suspended end 311 of the corresponding cantilever beam load cell; wherein, the feeding mechanism 400 can drive the corresponding two valve plates 322 to rotate and open relative to each other, and the reset structure 325 can drive the corresponding two valve plates 322 to rotate and close relative to each other. Baffles 323 are provided at one end of the valve plate 322 close to the load cell and at one end away from the load cell, or the mounting rods 321 are provided with baffles 323 on one side of the valve plate 322 close to the load cell and on one side away from the load cell. Among them, the feeding mechanism 400 can be set as a cylinder or a linear motor, etc. With the above arrangement, when the two valve plates 322 on the receiving hopper 320 are closed, the two valve plates 322 and the baffle 323 enclose a cavity for storing and receiving the product, so that the receiving hopper 320 can receive the product at the loading station. When the receiving hopper 320 moves to the corresponding unloading station, the control device 500 controls the feeding mechanism 400 to drive the two valve plates 322 to rotate and open, so that the product can fall onto the corresponding unloading station to achieve unloading. With the above arrangement, it is convenient for the receiving hopper 320 to unload, and the receiving hopper 320 can unload quickly.

[0037] Referring to Figure 4, according to some embodiments of the present utility model, the valve plate 322 or the mounting rod 321 is connected with a swing arm 324. The swing arm 324 is located outside the valve plate 322. The blanking mechanism 400 drives the valve plate 322 to rotate by pushing the swing arm 324. Thus, it is possible to prevent the blanking mechanism 400 from pressing against the product.

[0038] Refer to Figure 1 and Figure 3 , according to some embodiments of the present utility model, the turntable 200 is provided with a fixing plate 510. The fixing plate 510 is located above the receiving hopper 320. All the blanking mechanisms 400 are installed on the fixing plate 510. With the above arrangement, the installation of the blanking mechanism 400 can be facilitated, and the influence of the blanking mechanism 400 on the weighing device 310 can be reduced.

[0039] Refer to Figure 1 and Figure 3 , according to some embodiments of the present utility model, a protective cover 520 is installed on the turntable 200. The protective cover 520 covers above all the weighing devices 310. The fixing plate 510 and all the blanking mechanisms 400 are located inside the protective cover 520. Thus, the weighing device 310 and the blanking mechanism 400 can be protected by the protective cover 520, and the influence of external dust or other objects on the weighing device 310 and the blanking mechanism 400 can be reduced.

[0040] It can be imagined that in some other embodiments, the above-mentioned receiving hopper 320 can also be blanked in other ways. For example, there is a discharge hole on the side surface of the receiving hopper 320 far from the weighing device 310. At this time, the blanking mechanism 400 can be set as a blower. When the receiving hopper 320 needs to be blanked, the blower can directly blow the product out of the discharge hole, thus completing the blanking work.

[0041] Refer to Figure 1 and Figure 3 , according to some embodiments of the present utility model, an annular protective shell 530 is provided on the frame 100. All the receiving hoppers 320 are located inside the protective shell 530. The protective shell 530 is located above the blanking station. Thus, the receiving hopper 320 can be prevented from colliding with external objects by the protective shell 530.

[0042] Refer to Figure 1 and Figure 3 , according to some embodiments of the present utility model, the rapid weighing and grading equipment may further include a feeding conveyor mechanism 600. The discharge end of the feeding conveyor mechanism 600 is located at the feeding station. A receiving chute 700 is provided at each blanking station. The receiving chute 700 is inclined to guide the product to be output to other equipment.

[0043] It should be noted that, in some embodiments, the products can also be conveyed to the loading station by the conveying equipment of the previous process of the production line. In this case, the quick weighing and grading equipment may not need to be separately configured with the loading conveying mechanism 600. Similarly, the input end of the conveying equipment of the next process can also be inserted into the unloading station to receive the products. In this case, the receiving chute 700 may not need to be provided either.

[0044] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0045] The above has described this embodiment in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art of the said technology, various changes can also be made without departing from the gist of the present invention.

Claims

1. A rapid weighing and grading device, characterized in that: include: The frame (100) is provided with a loading station and at least two unloading stations; A turntable (200) is rotatably mounted on the frame (100), wherein the rotation axis of the turntable (200) is along the up-down direction; A first driving device, disposed on the frame (100), the first driving device being used to drive the turntable (200) to rotate; A plurality of weighing devices (310) are installed on the rotating disk (200), each weighing device (310) is provided with a receiving hopper (320), all the receiving hoppers (320) are distributed circumferentially around the rotation axis of the rotating disk (200), a material discharge mechanism (400) is provided between the receiving hopper (320) and the rotating disk (200), and the material discharge mechanism (400) is used to drive the receiving hopper (320) to discharge materials; A control device (500) electrically connected or in communication connection with the first drive device, all the weighing devices (310) and all the unloading mechanisms (400); Among them, all the unloading stations and the loading stations are distributed around the rotation axis of the turntable (200), and there is a gap between the loading station and the adjacent unloading station. The turntable (200) can drive any one of the receiving hoppers (320) to move from the loading station to any one of the unloading stations. The control device (500) can control the corresponding unloading mechanism (400) to work when the corresponding receiving hopper (320) moves to the corresponding unloading station according to the detection result of the weighing device (310).

2. A rapid weighing and grading device according to claim 1, characterized in that: Along the rotation direction of the turntable (200), the angle through which the receiving hopper (320) rotates from the loading station to the first unloading station is greater than or equal to 90 degrees.

3. A rapid weighing and grading device according to claim 1, characterized in that: The receiving hopper (320) is located outside the turntable (200).

4. The rapid weighing and grading equipment according to claim 1, characterized in that: The weighing device (310) comprises a cantilever beam weighing sensor, one end of the cantilever beam weighing sensor is fixedly mounted on the turntable (200), and the other end is a suspended end (311) suspended relative to the turntable (200), and the corresponding receiving hopper (320) is mounted on the corresponding suspended end (311) of the cantilever beam weighing sensor.

5. A rapid weighing and grading device according to claim 4, characterized in that: The receiving hopper (320) comprises two installation rods (321) and two valve plates (322) arranged at intervals, and a reset structure (325) is arranged between the two valve plates (322); The upper ends of the two valve plates (322) are mounted on the two mounting rods (321) in a one-to-one correspondence, and the mounting rods (321) are rotatably mounted on the corresponding suspended ends (311) of the cantilever beam weighing sensors; or the upper ends of the two valve plates (322) are rotatably mounted on the two mounting rods (321) in a one-to-one correspondence, and the mounting rods (321) are mounted on the corresponding suspended ends (311) of the cantilever beam weighing sensors; In which, the unloading mechanism (400) can drive the corresponding two valve plates (322) to rotate relative to each other and open, and the reset structure (325) can drive the corresponding two valve plates (322) to rotate relative to each other and close together, and a baffle (323) is provided on one end of the valve plate (322) close to the weighing sensor and one end of the valve plate (322) adjacent to the weighing sensor, or, the mounting rod (321) is provided with a baffle (323) on one side of the valve plate (322) close to the weighing sensor and on one side away from the weighing sensor.

6. A rapid weighing and grading device according to claim 5, characterized in that: The valve plate (322) or the mounting rod (321) is connected to a swing arm (324), and the swing arm (324) is located outside the valve plate (322). The unloading mechanism (400) drives the valve plate (322) to rotate by pushing the swing arm (324).

7. The rapid weighing and grading equipment according to claim 5, characterized in that: The rotating disk (200) is installed with a fixing plate (510), the fixing plate (510) is located on the upper side of the receiving hopper (320), and all the unloading mechanisms (400) are installed on the fixing plate (510).

8. The rapid weighing and grading equipment according to claim 7, characterized in that: A protective cover (520) is installed on the rotating disk (200), and the protective cover (520) is arranged above all the weighing devices (310). The fixing plate (510) and all the unloading mechanisms (400) are located inside the protective cover (520).

9. The rapid weighing and grading equipment according to claim 3, characterized in that: The frame (100) is provided with an annular protective shell (530), all the receiving hoppers (320) are located inside the protective shell (530), and the protective shell (530) is located on the upper side of the unloading station.

10. The rapid weighing and grading equipment according to claim 1, characterized in that: It comprises a loading and conveying mechanism (600), the discharge end of the loading and conveying mechanism (600) is located at the loading station, and each unloading station is provided with a receiving chute (700).

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