Small material high-precision automatic weighing and batching production line

Abstract

The utility model relates to small material batching equipment technical field discloses a kind of small material high-precision automatic weighing batching production line, including the multiple conveyors of sequentially operating material box along linear arrangement, the multiple racks of being arranged along the conveying direction of conveyer are provided in one side or both sides of conveyer, at least one storage bin is provided on each rack, and the bottom outlet of storage bin is connected with unloader, and the outlet of unloader is connected with discharging unit, and material box separation mechanism is arranged at the conveyer of first end;First weighing unit is installed between storage bin and rack, and storage bin, unloader are supported on first weighing unit;Second weighing unit is installed on conveyer;The utility model uses production line of watercourse, and multiple materials can be simultaneously batching, and batching continuity is high, and batching efficiency is improved;And the precision of raw material batching weight detection can be improved by weighing twice before and after.

Description

Technical Field

[0001] This utility model belongs to the technical field of small material batching equipment, and relates to a high-precision automatic weighing and batching production line for small materials. Background Technology

[0002] Small raw materials are essential core raw materials in industrial production processes. Specifically, they refer to lightweight or medium-density materials such as granules, powders, and small lumps, characterized by their small usage and decisive impact on the quality of the finished product. Small raw material batching is the process of adding these key materials to the raw materials according to the formula designed by the formula designer. It can be divided into three categories: manual, semi-automatic, and fully automatic.

[0003] In the prior art, Chinese patent CN207271198U discloses a high-precision automatic batching system for core small materials, including a batching frame, a feeding device, a metering device, an air curtain dust removal device, and a collection device. The feeding device includes a storage bin, an automatic bin door, a barcode scanner, a screw feeder, and a collection hopper. The metering device includes a metering cylinder, a metering scale, a drive cylinder, and a bottom plate valve. The collection device includes a batching cylinder, a moving platform, and a synchronous belt guide rail. The batching cylinder is located on the upper side of the moving platform, and the moving platform is connected to the synchronous belt guide rail. When the above system is batching, the moving platform drives the batching cylinder to move sequentially to the bottom of the metering cylinder. The bottom plate valve on the metering cylinder opens to unload the material. After the batching cylinder passes through all the metering cylinders, the batching is completed. Afterward, the moving platform needs to drive the batching cylinder back to the initial position before the next batching can be performed. This results in poor batching continuity and reduced batching efficiency. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a high-precision automatic weighing and batching production line for small materials, which effectively solves the problems of poor batching continuity and low efficiency in the existing technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a small material high-precision automatic weighing and batching production line, including multiple conveyors with sequentially rotating material boxes arranged in a linear fashion, multiple platforms arranged along the conveyor conveying direction on one or both sides of the conveyors, each platform having at least one storage bin, the bottom outlet of the storage bin being connected to a discharge device, the outlet of the discharge device being connected to a discharge unit, and a material box separation mechanism being provided at the first end of the conveyor; A first weighing unit is installed between the storage silo and the platform, and the storage silo and the unloader are both supported on the first weighing unit; a second weighing unit is installed on the conveyor.

[0006] Furthermore, a lifting unit is connected between the second weighing unit and the conveyor, and the lifting unit can drive the second weighing unit to rise and fall.

[0007] Furthermore, the discharge port of the discharge unit is connected to a rapid feeding unit and a precise compensation unit.

[0008] Furthermore, the first weighing unit and the second weighing unit have the same structure; both include two parallel support plates, a weighing sensor installed between the two support plates, and a weighing plate installed on the upper side of the upper support plate.

[0009] Furthermore, the lifting unit adopts a linkage structure.

[0010] Furthermore, the unloader is a gravity unloader or a pump.

[0011] Furthermore, the middle part of the material box separation mechanism is provided with a conveying unit that connects to the conveyor at the head end.

[0012] Furthermore, a separate conveyor is connected at the end of the conveyor.

[0013] Furthermore, a feeding unit is installed on the platform, and the feeding unit is connected to the storage bin.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, multiple conveyors arranged in a linear fashion can continuously operate, allowing different material boxes to pass through different storage bins in sequence. After the material boxes pass through different storage bins, the raw materials in the storage bins are unloaded into the material boxes by the unloader. Therefore, after different material boxes pass through different storage bins via multiple conveyors, the material batching is automatically completed. With such a flow-type production line, multiple materials can be batched simultaneously, resulting in high batching continuity and improved batching efficiency. 2. In this utility model, the first weighing unit can detect the weight of the raw materials discharged from the storage bin, and the second weighing unit weighs the raw materials in the material box again to verify the weight of the raw materials held in the material box. The two weighings can improve the accuracy of detecting the weight of the raw materials. 3. In this utility model, the stacked boxes can be peeled off one by one by the box separation mechanism and transported to the conveyor by the conveying unit, thereby improving the overall level of automation. 4. In this utility model, an independent conveyor is also connected to the end conveyor, which can perform final weighing of the batched material box to ensure the quality of the raw materials in the material box. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a perspective view of the present invention from another angle; Figure 3 This is a schematic diagram showing the cooperation between a single platform and a single conveyor in this utility model; Figure 4 This is a perspective view of the conveyor in this utility model; Figure 5 This is a perspective view of the conveyor in this utility model from another angle; Figure 6 for Figure 5 Enlarged view of part B in the image; Figure 7 This is a perspective view of the material box separation mechanism in this utility model; Figure 8 This is a perspective view of the material box separation mechanism in this utility model from another angle; Figure 9 This is a perspective view of the first weighing unit in this utility model; Figure 10 for Figure 7 Enlarged view of section C in the image.

[0016] In the diagram: 1. Platform; 2. Storage bin; 3. Unloader; 4. Discharge unit; 5. Conveyor; 501. Conveying unit; 6. First weighing unit; 601. Support plate; 602. Weighing sensor; 603. Weighing plate; 7. Second weighing unit; 8. Lifting unit; 9. Y-shaped pipe; 10. Rapid unloading unit; 11. Precision compensation unit; 12. Control valve; 13. First shaft; 14. Active crank; 15. Passive crank; 16. Crank connecting rod; 17. Drive source; 18. Drive rod; 19. Second shaft; 20. Loading unit; 21. Material box separation mechanism; 22. Unloading plate; 23. Unloading window; 24. Guide rod; 25. Synchronous pulley; 26. Stripping wheel; 27. Servo motor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0018] like Figures 1 to 3As shown, this utility model proposes a high-precision automatic weighing and batching production line for small materials, including multiple conveyors 5 and multiple frames 1. The multiple conveyors 5 are arranged in a linear sequence, while the frames 1 are arranged on one or both sides of the conveyors 5 along the conveying direction of the conveyors 5. Each frame 1 is provided with at least one storage bin 2, and in this embodiment, two bins are specifically provided. The bottom outlet of the storage bin 2 is connected to a discharge device 3, and the outlet of the discharge device 3 is connected to a discharge unit 4. The conveyors 5 are located below the discharge port of the discharge unit 4. It also includes a first weighing unit 6 installed between the storage silo 2 and the platform 1. Specifically, a support frame is connected to the bottom of the storage silo 2, and the bottom of the support frame is connected to the first weighing unit 6. The unloader 3 is also installed on the first weighing unit 6. A second weighing unit 7 is installed on the conveyor 5. Multiple conveyors 5 arranged in a linear fashion can continuously operate, and different material boxes pass through different storage silos 2 in sequence. After the material boxes pass through different storage silos 2, the raw materials in the storage silos 2 are unloaded into the material boxes under the action of the unloader 3. Therefore, after different material boxes pass through different storage silos 2 through the operation of multiple conveyors 5, the automatic feeding is completed.

[0019] In this embodiment, as Figure 8 and Figure 9 As shown, a conveying unit 501 connected to the conveyor 5 at the head end is installed in the middle of the material box separation mechanism 21; specifically, the conveyor 5 includes a frame and the conveying unit 501 mounted on the frame, and the conveying unit 501 adopts a synchronous belt conveyor, which can also be a chain conveyor or a roller conveyor, and the frame is assembled from profiles; the synchronous belt conveyor is existing technology, in Figure 4 The specific mechanism is shown in the figure and will not be described in detail here; the material box separation mechanism 21 can peel off the stacked material boxes one by one and transport them one by one to the conveying unit 501 in the first end conveyor 5 through the conveying unit 501. Specifically, such as Figure 7 , Figure 8 as well as Figure 10As shown, the material box separation mechanism 21 includes a frame and a feeding plate 22 mounted on the top surface of the frame. A feeding window 23 is provided in the center of the feeding plate 22. Guide rods 24 are installed at the four corners of the feeding window 23. Multiple synchronous pulleys 25, linked by synchronous belts, are mounted on the bottom surface of the feeding plate 22. Synchronously rotating stripping rollers 26 are mounted on the synchronous pulleys 25, and the stripping rollers 26 are evenly distributed around the material box. A servo motor 27 is also mounted on the bottom surface of the feeding plate 22 via a bracket. The output shaft of the machine 27 is equipped with a drive synchronous pulley 25 that works with the synchronous belt. When it is necessary to peel off the stacked boxes one by one, the servo motor 27 operates, synchronously driving multiple peeling rollers 26 to peel off the bottommost box, which then falls onto the conveying unit 501 in the middle of the box separation mechanism 21. The conveying unit 501 can move the box to the conveying unit 501 of the first conveyor 5. The box separation mechanism 21 can automatically provide empty boxes to the first conveyor 5, improving the overall automation level. Initially, the guide rod 24 and the edge of the stacked boxes are tightly fitted, and the upper end of the guide rod 24 is bent away from the box to facilitate the placement of the stacked boxes. Multiple auxiliary rollers are also installed on the bottom surface of the feed plate 22. The synchronous belt passes around the auxiliary rollers, so that the wrap angle between the synchronous belt and the synchronous pulley 25 is less than 120 degrees, ensuring the reliability of the engagement between the synchronous belt and the synchronous pulley 25.

[0020] Specifically, the peeling wheel 26 is equipped with a paddle and a spiral guide surface that cooperates with the paddle; during the rotation of the peeling wheel 26, the paddle can enter between the edges of the two material boxes and cooperate with the spiral guide surface to separate the material boxes.

[0021] In this embodiment, as Figure 9 As shown, the first weighing unit 6 and the second weighing unit 7 have the same structure; both include two parallel support plates 601 and a weighing sensor 602 installed between the two support plates 601. A weighing plate 603 is installed on the upper side of the upper support plate 601; specifically, the weighing plate 603 is "X" shaped; the lower weighing plate 603 in the first weighing unit 6 is bolted to the top surface of the frame 1; this structure is simple and easy to manufacture.

[0022] In this embodiment, an independent conveyor 5 is also connected to the end conveyor 5, which can perform final weighing of the batched material box to ensure the quality of the raw materials in the material box.

[0023] In this embodiment, a feeding unit 20 is installed on the frame 1; when the raw material medium is powder or granules, the feeding unit 20 can be a screw conveyor, the outlet of the screw conveyor is connected to the inlet of the storage silo 2, and the inlet of the screw conveyor is located at a low position; such as Figure 1As shown, when the raw material medium is fluid, the feeding unit 20 adopts one of the following pumps: flow pump, peristaltic pump, etc. The outlet of the feeding unit 20 is connected to the feed pipe that communicates with the feed inlet of the storage bin 2, and the inlet of the feeding unit 20 is connected to the material taking pipe. When the weighing of the first weighing unit 6 is less than the set threshold, the feeding unit 20 can work to compensate the storage bin 2 for raw materials without manual feeding, thus ensuring the degree of automation.

[0024] In this embodiment, the unloader 3 can be a gravity unloader such as a screw feeder, belt feeder, vibrating feeder, or rotary feeder, or a pump such as a screw pump, peristaltic pump, or diaphragm pump. When the raw material medium is powder or granules, a screw feeder, vibrating feeder, or rotary feeder is preferred. When the raw material medium is a fluid medium, a screw pump or peristaltic pump is preferred. As long as the unloading of different media raw materials is met, and all of them are within the protection scope of this utility model, this utility model has many application scenarios.

[0025] When using the above technical solution: the material box separation mechanism 21 separates the stacked material boxes between the guide rods 24 sequentially to the lower conveying unit 501. The conveying unit 501 moves the separated material boxes to the conveying unit 501 in the first conveyor 5. When the material box moves to the discharge port of the discharge unit 4, the unloader 3 discharges the raw material in the storage bin 2 and it falls into the material box. The first weighing unit 6 weighs the material before and after the discharge, and the difference between the weighing before and after is the discharge amount. The second weighing unit 6 on the conveyor 5... Weighing unit 7 can perform secondary weighing on the material box to correct the weight of the raw materials it supports, thereby improving the accuracy of the raw material batching weight. The conveying unit 501 on the conveyor 5 continues to operate, moving the material box to the next conveyor 5 for the next raw material batching. After the final batching, the second weighing unit 7 on the last independent conveyor 5 performs the final weighing to verify the total batching weight. On this production line, multiple material boxes are batched simultaneously, resulting in high batching continuity and improved batching efficiency. Example 2

[0026] The difference compared to the technical solution of Embodiment 1 is as follows: Figures 4 to 6As shown, a lifting unit 8 is connected between the second weighing unit 7 and the conveyor 5. The lifting unit 8 can drive the second weighing unit 7 to rise and fall. Specifically, the lifting unit 8 adopts a linkage structure, including a first shaft 13, an active crank 14, a passive crank 15, and a crank connecting rod 16. There are two first shafts 13, one in front of the other. Both ends of the first shaft 13 are connected to the frame through bearing seats and bearing structures. The active crank 14 and the passive crank 15 are L-shaped connecting rods. Holes are opened in the middle of the active crank 14 and the passive crank 15. The first shaft 13 passes through the holes and is fixedly connected to each other by welding or interference fit. The lower ends of the active crank 14 and the passive crank 15 are hinged to the crank connecting rod 16, and the upper ends of the active crank 14 and the passive crank 15 are hinged to the second weighing unit 7. Furthermore, there are two parallel arrangements of the active crank 14, the passive crank 15, and the crank connecting rod 16, and two second shafts 19 arranged front and rear. One second shaft 19 is connected to the lower end of the active crank 14, and the other second shaft 19 is connected to the lower end of the passive crank 15. Correspondingly, the first shaft 13 and the second shaft 19 are arranged in parallel, so that the active crank 14, the passive crank 15, the crank connecting rod 16, the first shaft 13, and the second shaft 19 can form two parallel four-bar linkages that move synchronously. These linkages can simultaneously support the four corners of the lower side of the second weighing unit 7, improving the stability of the lifting and lowering of the second weighing unit 7, and thus ensuring the stability and accuracy of the weighing. Specifically, a support lug is integrally connected to the bottom surface of the second weighing unit 7, and the upper ends of both the passive crank 15 and the active crank 14 are hinged to the support lug. In this embodiment, a drive rod 18 is provided at one end of the crank connecting rod 16 connected to the active crank 14, located between the two active cranks 14. The drive rod 18 is connected between the first shaft 13 and the second shaft 19. Specifically, the drive rod 18 has a mounting hole through which both the first shaft 13 and the second shaft 19 pass. The end of the drive rod 18 away from the first shaft 13 is hinged to the drive source 17. The drive source 17 is a cylinder or an electric push rod, and the other end of the drive source 17 is hinged to the frame. The drive rod 18 enables the driving force of the drive source 17 to be located in the middle of the second shaft 19, ensuring the force balance of the parallel four-bar linkage formed above. Furthermore, there are two drive sources 17 and two drive rods 18, located at both ends of the second shaft 19, which not only ensures the strength of the applied force but also further ensures the balance of the applied force.

[0027] In this embodiment, the driving source 17 drives the linkage structure to lift the second weighing unit 7. When the material box is transported above the second weighing unit 7 by the conveyor 5, the linkage structure lifts the second weighing unit 7, allowing the second weighing unit 7 to weigh the material box and the small materials inside. This avoids interference from the conveyor 5 during weighing and provides high weighing accuracy. Moreover, after weighing, the linkage structure drives the second weighing unit 7 to descend, allowing the material box to fall back onto the conveyor 5 for transport, avoiding the need to remove the material box for weighing and improving production efficiency. Therefore, this utility model features high weighing accuracy and high production efficiency. Example 3

[0028] Compared with the technical solution of the above embodiments, the difference is that the discharge port of the discharge unit 4 is connected to the rapid feeding unit 10 and the precision compensation unit 11; and the feeding port area of ​​the rapid feeding unit 10 is larger than the feeding port area of ​​the precision compensation unit 11, so that the feeding speed of the rapid feeding unit 10 is greater than the feeding speed of the precision compensation unit 11. When unloading, the rapid feeding unit 10 can quickly unload into the material box, while the precision compensation unit 11 can accurately compensate for the raw materials again, which can improve the feeding speed and ensure the feeding accuracy.

[0029] In one implementation, such as Figure 3 As shown, when the raw material medium is fluid, the discharge unit 4, the rapid feeding unit 10, and the precision compensation unit 11 all use pipelines. The discharge unit 4 and the rapid feeding unit 10 and the precision compensation unit 11 are connected by a Y-shaped pipeline 9. Control valves 12 can be installed in the rapid feeding unit 10 and the precision compensation unit 11. The control valves 12 can be pneumatic or electric ball valves, piston valves, etc. In another embodiment, when the raw material medium is powder or granules: the discharge unit 4 can be in the form of a bin or hopper; while the rapid feeding unit 10 and the precision compensation unit 11 can be screw feeders of different diameters, both installed at the bottom discharge port of the bin or hopper; control valves 12 can be installed at the discharge ports of the rapid feeding unit 10 and the precision compensation unit 11; the control valves 12 can be pneumatic or electric butterfly valves, plate valves, etc.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision automatic weighing and batching production line for small materials, characterized in that: The system includes multiple conveyors (5) that operate sequentially with material boxes arranged in a linear fashion. Multiple platforms (1) are arranged along the conveying direction of the conveyors (5) on one or both sides of each conveyor (5). Each platform (1) is provided with at least one storage bin (2). The bottom outlet of the storage bin (2) is connected to a discharger (3). The outlet of the discharger (3) is connected to a discharge unit (4). A material box separation mechanism (21) is provided at the first end of the conveyor (5). A first weighing unit (6) is installed between the storage bin (2) and the platform (1), and the storage bin (2) and the unloader (3) are both supported on the first weighing unit (6); a second weighing unit (7) is installed on the conveyor (5).

2. The high-precision automatic weighing and batching production line for small materials according to claim 1, characterized in that: A lifting unit (8) is connected between the second weighing unit (7) and the conveyor (5), and the lifting unit (8) can drive the second weighing unit (7) to rise and fall.

3. The high-precision automatic weighing and batching production line for small materials according to claim 1 or 2, characterized in that: The discharge port of the discharge unit (4) is connected to a rapid discharge unit (10) and a precision compensation unit (11).

4. The high-precision automatic weighing and batching production line for small materials according to claim 1 or 2, characterized in that: The first weighing unit (6) and the second weighing unit (7) have the same structure; both include two parallel support plates (601), a weighing sensor (602) installed between the two support plates (601), and a weighing plate (603) installed on the upper side of the upper support plate (601).

5. The high-precision automatic weighing and batching production line for small materials according to claim 2, characterized in that: The lifting unit (8) adopts a linkage structure.

6. The high-precision automatic weighing and batching production line for small materials according to claim 1, characterized in that: The unloader (3) is a gravity unloader or a pump.

7. The high-precision automatic weighing and batching production line for small materials according to claim 1, characterized in that: The middle part of the material box separation mechanism (21) is provided with a conveying unit (501) that is connected to the conveyor (5) at the head end.

8. The high-precision automatic weighing and batching production line for small materials according to claim 1 or 7, characterized in that: An independent conveyor (5) is also connected at the end of the conveyor (5).

9. The high-precision automatic weighing and batching production line for small materials according to claim 1, characterized in that: The platform (1) is equipped with a feeding unit (20), which is connected to the storage bin (2).

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