Automatic weighing mechanism for electrode paste raw materials

Abstract

The utility model discloses an automatic weighing mechanism for electrode paste raw materials, which belongs to the technical field of electrode paste production equipment, and comprises a frame body and a weighing assembly, the weighing assembly comprises a weighing seat fixed on the frame body, a weighing sensor arranged on the weighing seat, and a weighing disc rotationally connected with the weighing seat through a hinge shaft, the end, away from the hinge shaft, of the weighing disc is connected with a lifting driving mechanism. The frame body is provided with a scraping assembly, the scraping assembly comprises a linear guide rail, a scraping plate and a driving part which are arranged on the side wall of the frame body, the working end of the scraping plate is provided with an elastic scraping strip matched with the surface profile of the weighing disc, the formed track of the scraping plate coincides with the inclined plane of the weighing disc, and the frame body is provided with a control module. The frame body is also provided with an air curtain generator and a negative pressure dust removal port, so that the problems that an existing automatic weighing mechanism for electrode paste raw materials lacks accurate angle control, so that the fluctuation of residual quantity is large, the cleaning requirement cannot be adjusted according to raw materials with different viscosities, and the weighing accuracy is influenced are effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of electrode paste production equipment, specifically to an automatic weighing mechanism for electrode paste raw materials. Background Technology

[0002] In the electrode paste production process, accurate weighing of raw materials is a crucial step in ensuring product quality stability and consistency. Traditional processes mainly rely on manual weighing of raw materials such as calcined petroleum coke and coal tar pitch. This method, due to inconsistencies and fluctuations in human operation, makes it difficult to guarantee high precision and stability in raw material weighing, thus affecting the quality of the final product. Therefore, automated weighing technology has been widely applied and developed to improve production efficiency and ensure product consistency.

[0003] While some automatic weighing equipment already exists on the market, and although these devices employ a mechanical tilting structure, which to some extent solves the error problem of manual weighing, they still have some key shortcomings. First, the tilting mechanism lacks precise angle control, leading to significant fluctuations in residual weight and wasting 0.8 to 1.2 kg of raw material per tilt. Second, the gap between the scraping component and the weighing pan is fixed, making it impossible to adjust the cleaning requirements according to raw materials of different viscosities, thus affecting weighing accuracy. Finally, the existing dust removal systems operate independently, causing airflow turbulence and resulting in the escape of large amounts of fine powder, causing additional loss and contamination of raw materials and severely affecting the stability of the product's bulk density.

[0004] Therefore, there is an urgent need to develop an automatic dispensing mechanism that integrates high-precision weighing, adaptive cleaning, and efficient dust removal to improve the accuracy of raw material dispensing and thus enhance the stability of electrode paste products. Utility Model Content

[0005] The purpose of this invention is to overcome the aforementioned technical difficulties. This invention provides an automatic filling mechanism that integrates high-precision weighing, adaptive cleaning, and efficient dust removal to improve the accuracy of raw material filling and thus enhance the stability of electrode paste products.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic weighing mechanism for electrode paste raw materials, comprising a frame and a weighing component. The weighing component includes a weighing base fixed to the frame, a weighing sensor disposed on the weighing base, and a weighing pan rotatably connected to the weighing base via a hinge shaft. The end of the weighing pan away from the hinge shaft is connected to a lifting drive mechanism, which drives the weighing pan to generate a tilt angle of 25-35°. The frame is provided with a scraping component, which includes a linear guide rail disposed on the side wall of the frame, a scraper, and a drive component. The working end of the scraper is provided with an elastic scraper strip that matches the surface contour of the weighing pan, and the forming trajectory of the scraper coincides with the plane of the weighing pan after tilting. The frame is provided with a control module that is signal-connected to the weighing sensor, the lifting drive mechanism, and the scraping component. The frame is also provided with an air curtain generator and a negative pressure dust removal port.

[0007] Furthermore, the lifting drive mechanism includes a servo motor, a ball screw driven by the servo motor, and a connecting rod connecting the screw nut and the weighing pan, with a connecting rod displacement resolution ≤0.01mm.

[0008] Furthermore, the weighing pan is provided with an annular heating tube at the bottom, the temperature range of the annular heating tube is 80-120℃, the surface of the weighing pan is coated with a Teflon coating with a thickness of 0.4±0.05mm, and the edge of the pan is provided with an anti-overflow baffle with a height of 12±1mm, the anti-overflow baffle being set at an angle of 100-110° with the plane of the pan.

[0009] Furthermore, the weighing sensor has a double shear beam structure, a weighing range of 50-200kg, and a comprehensive accuracy level of 0.03%FS. The weighing sensor has a built-in temperature compensation module with a compensation temperature range of -10℃ to 80℃ and a response time of ≤50ms.

[0010] Furthermore, the elastic scraper is made of polytetrafluoroethylene, the gap between the elastic scraper and the weighing pan is 0.8±0.2mm, the scraping pressure of the elastic scraper is controlled at 8-12N by a pressure sensor, and a high-pressure air nozzle with a spray angle of 45±5° is provided behind the scraper, with a working air pressure of 0.3-0.5MPa.

[0011] Furthermore, the air curtain generator is linked to the negative pressure dust removal port for control. When the air curtain speed is ≥0.8m / s, the dust removal wind speed is automatically increased to ≥20m / s.

[0012] The automatic weighing mechanism for electrode paste raw materials provided by this utility model has the following beneficial effects:

[0013] This invention, through the use of a weighing component in conjunction with a scraping component, an air curtain generator, and a negative pressure dust removal port, can effectively remove residues from the weighing pan, ensuring the stability and accuracy of the raw materials during the weighing process. This effectively solves the problem that existing automatic weighing mechanisms for electrode paste raw materials lack precise angle control, resulting in large fluctuations in residue levels and an inability to adjust cleaning requirements according to raw materials of different viscosities, thus affecting weighing accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the automatic weighing mechanism for electrode paste raw materials of this utility model.

[0015] Figure 2 This is a cross-sectional structural schematic diagram of the automatic weighing mechanism for electrode paste raw materials of this utility model.

[0016] Figure 3 This is a schematic diagram of the weighing component of the automatic weighing mechanism for electrode paste raw materials of this utility model.

[0017] In the diagram, 1. Frame; 2. Weighing assembly; 21. Weighing base; 22. Weighing sensor; 23. Weighing pan; 24. Hinge shaft; 25. Lifting drive mechanism; 3. Scraper assembly; 31. Linear guide rail; 32. Scraper; 33. Drive component; 34. Elastic scraper; 4. Control module; 5. Air curtain generator; 6. Negative pressure dust removal port; 7. Annular heating tube; 8. Teflon coating; 9. Anti-overflow guard. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. The described embodiments are merely some, not all, of these embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] like Figure 1-3The present invention provides an automatic weighing mechanism for electrode paste raw materials, which can effectively improve weighing accuracy and production efficiency. It includes a frame 1 and a weighing assembly 2. The frame 1 is welded from 304 stainless steel and has an inlet and an outlet corresponding to the weighing assembly 2. The weighing assembly 2 includes a weighing base 21 fixed to the frame 1, a weighing sensor 22 mounted on the weighing base 21, and a weighing pan 23 rotatably connected to the weighing base 21 via a hinge shaft 24. The weighing sensor 22 has a double shear beam structure, a weighing range of 50-200 kg, and a comprehensive accuracy level of 0.03%FS. The weighing sensor 22 has a built-in temperature compensation module with a compensation temperature range of -10℃ to 80℃ and a response time ≤50ms. The bottom of the weighing pan 23 is provided with an annular heating tube 7. The annular heating tube 7 ensures that the weighing pan 23 maintains a constant temperature during the weighing process, avoiding weighing errors caused by temperature changes. The annular heating tube 7 has a temperature range of 80-120℃. The surface of the weighing pan 23 is coated with a Teflon coating 8 with a thickness of 0.4±0.05mm, which can effectively prevent raw materials from adhering. The pan edge is provided with an anti-overflow baffle 9 with a height of 12±1mm. The anti-overflow baffle 9 is set at an angle of 100-110° with the pan plane, which further ensures the quality and accuracy of the weighing process.

[0020] The weighing pan 23 is connected to a lifting drive mechanism 25 at the end away from the hinge shaft 24, which drives the weighing pan 23 to produce a tilt angle of 25-35°. The lifting drive mechanism 25 includes a high-precision servo motor, a C3-level precision ball screw driven by the servo motor, and a connecting rod connecting the screw nut and the weighing pan 23. The two ends of the connecting rod adopt self-lubricating spherical bearings, and the displacement resolution is ≤0.01mm.

[0021] The frame 1 is equipped with a scraping assembly 3, which includes a linear guide rail 31, a scraper 32, and a drive component 33 located on the side wall of the frame 1. The linear guide rail 31 is parallel to the tilted surface of the weighing pan 23 when tilted, so that the movement trajectory of the elastic scraper 34 is consistent with the surface of the weighing pan 23, thereby reducing friction and improving the cleaning effect. The working end of the scraper 32 is provided with an elastic scraper 34 that matches the surface contour of the weighing pan 23, and the forming trajectory of the scraper 32 coincides with the plane of the weighing pan 23 after tilting. The elastic scraper 34 is made of polytetrafluoroethylene, and the gap between the elastic scraper 34 and the surface of the weighing pan 23 is 0.8±0.2mm. The scraping pressure of the elastic scraper 34 is controlled at 8-12N by a pressure sensor. A high-pressure air nozzle with a spray angle of 45±5° is provided behind the scraper 32, and its working air pressure is 0.3-0.5MPa.

[0022] The frame 1 is equipped with a control module 4 that is signal-connected to the weighing sensor 22, the lifting drive mechanism 25, and the scraping assembly 3. The control module 4 includes a dynamic compensation unit and an overload protection unit. The frame 1 is also equipped with an air curtain generator 5 and a negative pressure dust removal port 6. The negative pressure dust removal port is externally connected to a negative pressure dust collector (not shown in the figure). The air curtain generator 5 and the negative pressure dust removal port 6 are linked for control. When the air curtain speed is ≥0.8m / s, the dust removal wind speed is automatically increased to ≥20m / s. This utility model uses a weighing pan 23 with a heat-resistant Teflon coating 8, an elastic scraper 34 made of polytetrafluoroethylene, and a reasonably set air curtain and negative pressure dust removal system.

[0023] The control module of this utility model executes a phased strategy as shown in Table 1;

[0024] stage Air curtain wind speed scraper pressure Heating temperature Functional Objectives Weighing period 0.8m / s 0N Detachment 80℃ heat preservation Stable weighing combined with dust prevention Dumping period 1.0m / s 5N contact Viscosity reduction at 100℃ Precise pouring combined with anti-stick Cleaning period 1.2m / s 10N pressurization Flow at 120℃ Thorough cleaning combined with prevention of residue

[0025] Table 1

[0026] In this invention, during the weighing phase, a low-temperature air curtain forms a dust barrier, the scraper 32 detaches to avoid interfering with weighing, and heating maintains the flowability of the raw materials. During the pouring phase, the air curtain accelerates and guides the flow of the raw materials, the scraper 32 gently touches to prevent material from sticking, and heating reduces the viscosity of the asphalt. During the cleaning phase, high-pressure air nozzles and the scraper 32 work together to remove residues, high temperature softens the adhering substances, and strong airflow from the air curtain ensures the pan reaches zero. This application accurately measures the weight of the raw materials on the weighing pan 23 using a fixed weighing base 21 and a high-precision weighing sensor 22, and uses a servo motor and other drive components to create a specific tilt angle on the weighing pan 23, thereby improving the weighing effect of the raw materials and significantly reducing errors in the weighing process. In addition, the scraping component 3 effectively removes residues from the weighing pan 23, ensuring the accuracy of the weighing process. This automatic weighing mechanism has significant advantages in electrode paste production, effectively solving the problems of existing automatic weighing mechanisms for electrode paste raw materials lacking precise angle control, resulting in large fluctuations in residue, and being unable to adjust cleaning requirements according to raw materials of different viscosities, thus affecting weighing accuracy.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic weighing mechanism for electrode paste raw materials, comprising a frame (1) and a weighing component (2), characterized in that: The weighing assembly (2) includes a weighing base (21) fixed to the frame (1), a weighing sensor (22) mounted on the weighing base (21), and a weighing pan (23) rotatably connected to the weighing base (21) via a hinge shaft (24). A lifting drive mechanism (25) is connected to one end of the weighing pan (23) away from the hinge shaft (24), which drives the weighing pan (23) to generate a tilt angle of 25-35°. A scraping assembly (3) is provided on the frame (1), and the scraping assembly (3) includes components mounted on the side wall of the frame (1). The linear guide rail (31), scraper (32) and drive component (33) are provided. The working end of the scraper (32) is provided with an elastic scraper (34) that matches the surface contour of the weighing pan (23). The forming trajectory of the scraper (32) coincides with the plane of the weighing pan (23) after tilting. The frame (1) is provided with a control module (4) that is connected to the weighing sensor (22), the lifting drive mechanism (25) and the scraping assembly (3). The frame (1) is also provided with an air curtain generator (5) and a negative pressure dust removal port (6).

2. The automatic weighing mechanism for electrode paste raw materials according to claim 1, characterized in that: The lifting drive mechanism (25) includes a servo motor, a ball screw driven by the servo motor, and a connecting rod connecting the screw nut and the weighing pan (23), with a connecting rod displacement resolution ≤0.01mm.

3. The automatic weighing mechanism for electrode paste raw materials according to claim 1, characterized in that: The weighing pan (23) is provided with an annular heating tube (7) at the bottom. The temperature range of the annular heating tube (7) is 80-120℃. The surface of the weighing pan (23) is coated with a Teflon coating (8) with a thickness of 0.4±0.05mm. The edge of the pan is provided with an anti-overflow baffle (9) with a height of 12±1mm. The anti-overflow baffle (9) is set at an angle of 100-110° with the pan plane.

4. The automatic weighing mechanism for electrode paste raw materials according to claim 1, characterized in that: The weighing sensor (22) has a double shear beam structure, a weighing range of 50-200kg, and a comprehensive accuracy level of 0.03%FS. The weighing sensor (22) has a built-in temperature compensation module with a compensation temperature range of -10℃ to 80℃ and a response time of ≤50ms.

5. The automatic weighing mechanism for electrode paste raw materials according to claim 1, characterized in that: The elastic scraper (34) is made of polytetrafluoroethylene. The gap between the elastic scraper (34) and the weighing pan (23) is 0.8±0.2mm. The scraping pressure of the elastic scraper (34) is controlled at 8-12N by a pressure sensor. A high-pressure air nozzle with a spray angle of 45±5° is provided behind the scraper (32), and its working air pressure is 0.3-0.5MPa.

6. The automatic weighing mechanism for electrode paste raw materials according to claim 1, characterized in that: The air curtain generator (5) is linked to the negative pressure dust removal port (6) for control. When the air curtain speed is ≥0.8m / s, the dust removal wind speed is automatically increased to ≥20m / s.

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