Automatic weighing device

Abstract

The utility model provides an automatic weighing device which comprises a stand column and a weighing barrel, the upper end of the stand column is movably connected with a rotating assembly through a bearing, one end of the rotating assembly is fixedly connected with the weighing barrel, the other end of the rotating assembly is fixedly connected with a positioning wheel, and the upper surface of the stand column is movably connected with a fastening bolt through a bearing. The upper surface of the weighing barrel is symmetrically connected with limiting plates, the inner side faces of the limiting plates are symmetrically connected with protruding blocks, and the inner side face of the lower end of the weighing barrel is fixedly connected with a limiting ring. And the bottom plate is connected in the weighing barrel in a sliding manner through the limiting ring. Through cooperation of the weighing barrel, the bottom plate, the sealing layer, the limiting ring, the limiting plate and the protruding block, the bottom plate can correspondingly clean residual powder in the weighing barrel through the sealing layer, and therefore the weight error of the powder poured out by the weighing device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing, in particular to an automatic weighing device. Background Art

[0002] Powder metallurgy parts are made of metal powder as raw material through forming, sintering and necessary subsequent treatment. The performance of powder metallurgy parts is directly related to their density, and their density depends on the weight of metal powder added to the forming mold when sintering the parts. Therefore, the efficiency and accuracy of metal powder weighing have an important impact on the quality, manufacturing efficiency and cost of powder metallurgy parts. For this reason, many automatic weighing devices for metal powder have appeared in recent years. The existing metal powder weighing barrels need to weigh the same type of powder raw materials in multiple batches, but the powder of the previous batch will stick to the inner wall of the weighing container after weighing, which affects the weighing accuracy of the next batch of powder, and the error is too large.

[0003] After searching, an automatic powder weighing device disclosed in the prior art (application number: CN202320910173.1) records in the text that "mounting columns are vertically symmetrically arranged on both sides of the top of the electronic scale, and a weighing barrel is rotatably connected between the middle parts of the two mounting columns through a rotating member. The upper side of the weighing barrel is set as an inlet opening opening upward, and the tops of the two mounting columns are connected by a gantry. The gantry is provided with a powder scraping roller driven by a lifting component to move up and down to scrape off the powder adhered to the inner wall of the weighing barrel."; The device pours the metal powder to be weighed into the weighing barrel, and automatically weighs it in real time through the electronic scale. When the target weight is reached, the addition of metal powder is stopped, and the metal powder is removed through the weighing barrel. In order to prevent metal powder from sticking to the inner wall of the weighing barrel, the powder scraping roller is driven by the lifting component to extend into the weighing barrel to scrape off the powder stuck to the inner wall of the weighing barrel, so as not to affect the weighing accuracy of the next batch of powder and reduce the weighing error. However, the lifting component and the powder scraping roller provided in the device are both located above the electronic scale, so that the overall center of gravity of the weighing device is biased upward, so it is easy to tip over during use, and although the residual powder in the weighing barrel can be cleaned by the cooperation of the rotating motor, the powder scraping roller and the scraping brush, the powder is easily scattered in the air during the cleaning process, thereby reducing the air quality and damaging the health of the user. At the same time, the residual powder in the weighing barrel will increase the weight error of pouring out the powder, thereby affecting the quality of subsequent products. Utility Model Content

[0004] In order to overcome the defects of the prior art, an automatic weighing device is now provided to solve the problems raised in the above background technology.

[0005] To achieve the above object, an automatic weighing device is provided, including: a column and a weighing bucket. An electromagnet and a column are respectively fixedly connected to the upper surface of the main body of the electronic scale, and a cleaning brush is arranged on the side surface of the main body of the electronic scale. The upper end of the column is movably connected to a rotating assembly through a bearing, one end of the rotating assembly is fixedly connected to the weighing bucket, the other end of the rotating assembly is fixedly connected to a positioning wheel, and a fastening screw rod is movably connected to the upper surface of the column through a bearing. The moving plate is slidably connected to the upper end of the column through the screwed fastening screw rod. At the same time, a fastening block is correspondingly connected to the position of the moving plate relative to the positioning wheel, and a fastening layer is fixedly connected to the lower end of the fastening block. The upper surface of the weighing bucket is symmetrically connected with limiting plates, the inner side surfaces of the limiting plates are symmetrically connected with convex blocks, and the inner side surface of the lower end of the weighing bucket is fixedly connected with a limiting ring. The bottom plate is slidably connected to the inside of the weighing bucket through the limiting ring. At the same time, a sealing layer is fixedly connected to the outer side surface of the bottom plate, and the sealing layer is slidably connected to the inner side surface of the weighing bucket.

[0006] Preferably, the column has a rectangular structure. The rotating assembly movably connected to the upper end of the column is composed of a rotating rod and a mounting block. The rotating rod has a cylindrical structure, the mounting block has a square structure, and the side of the mounting block opposite to the weighing bucket has an arc-shaped structure. At the same time, the cross-section of the rotating assembly is in a T-shaped structure.

[0007] Preferably, the positioning wheel fixedly connected to the rotating assembly has a circular structure. Multiple anti-slip grooves are evenly arranged on the arc surface of the positioning wheel, and the positioning wheel and the rotating assembly together form a structure in the shape of the Chinese character '工' (gong).

[0008] Preferably, the moving plate has an L-shaped structure. The bent part of the moving plate is slidably connected to the inner side surface of the column. The fastening block fixedly connected to the moving plate has a square structure. The moving plate and the fastening block together form a structure in the shape of the Chinese character '冂' (tong). At the same time, the fastening layer fixedly connected to the lower surface of the fastening block has a concave-shaped structure, and the groove of the fastening layer has an arc-shaped structure.

[0009] Preferably, the weighing bucket has a cylindrical structure. Two groups of limiting plates are fixedly connected to both sides of the upper surface of the weighing bucket. Both groups of limiting plates have a fan-shaped ring structure. At the same time, the three convex blocks fixedly connected to the inner arc surface of the limiting plate are all in a hemispherical structure.

[0010] Preferably, the limiting ring fixedly connected to the weighing bucket has a circular ring structure. The inner diameter of the limiting ring is smaller than the diameter of the bottom plate. The push plate fixedly connected to the middle of the lower surface of the bottom plate has a structure in the shape of the Chinese character '凵' (kan).

[0011] Preferably, the bottom plate has a circular structure. A fixing groove is opened on the arc surface of the bottom plate. The sealing layer is fixedly connected to the arc surface of the bottom plate through the fixing groove. The sealing layer has a circular ring structure. The outer diameter of the sealing layer is adapted to the inner diameter of the weighing bucket. At the same time, the cross-section of the sealing layer is in a convex-shaped structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the cooperation of the column and the rotating assembly, the weighing bucket can be movably set above the electronic scale body, ensuring that the overall center of gravity of the automatic weighing device is biased downward, thereby enhancing the stability of the weighing device during use, and can also help reduce the overall cost of the device. At the same time, through the cooperation of the limit ring, the limit plate and the protrusion, the bottom plate can push the sealing layer to move inside the weighing bucket, and then the powder remaining inside the weighing bucket can be cleaned accordingly, which can not only prevent the powder from floating in the surrounding air and ensure the health of the user, but also reduce the error of pouring out the powder by the weighing device, thereby ensuring the quality of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a side view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a top view schematic diagram of an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the weighing bucket and the column part of the embodiment of the utility model.

[0017] In the figure: 1. Electronic scale body; 2. Column; 3. Weighing bucket; 4. Rotating assembly; 5. Positioning wheel; 6. Moving plate; 7. Limiting plate; 8. Bump; 9. Fastening screw; 10. Fastening block; 11. Fastening layer; 12. Bottom plate; 13. Sealing layer; 14. Limiting ring; 15. Push plate; 16. Cleaning brush. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides an automatic weighing device, including: a column 2 and a weighing bucket 3, the upper surface of the electronic scale body 1 is fixedly connected to the electromagnet and the column 2 respectively, and a cleaning brush 16 is arranged on the side of the electronic scale body 1, the upper end of the column 2 is movably connected to the rotating assembly 4 through a bearing, and one end of the rotating assembly 4 is fixedly connected to the weighing bucket 3, and the other end of the rotating assembly 4 is fixedly connected to the positioning wheel 5, and the upper surface of the column 2 is movably connected to the fastening screw 9 through the bearing, and the moving plate 6 is slidably connected to the fastening screw 9 through the screw connection It is connected to the upper end of the column 2, and the lower end of the moving plate 6 is connected to the fastening block 10 corresponding to the position of the positioning wheel 5, and the lower end of the fastening block 10 is fixedly connected to the fastening layer 11. The upper surface of the weighing bucket 3 is symmetrically connected to the limiting plate 7, and the inner side surface of the limiting plate 7 is symmetrically connected to the protrusion 8, and the inner side surface of the lower end of the weighing bucket 3 is fixedly connected to the limiting ring 14, and the bottom plate 12 is slidably connected in the weighing bucket 3 through the limiting ring 14, and the outer side surface of the bottom plate 12 is fixedly connected to the sealing layer 13, and the sealing layer 13 is slidably connected to the inner side surface of the weighing bucket 3.

[0019] In this embodiment, when it is necessary to pour out the automatically weighed powder, the weighing barrel 3 is first rotated so that the opening of the weighing barrel 3 is tilted downward, and then the large portion of the powder in the weighing barrel 3 can be poured out smoothly. At this time, the fastening screw 9 is rotated, and the fastening screw 9 pushes the screwed movable plate 6 to move downward, and then the movable plate 6 can drive the fastening block 10 to move synchronously, so that the fastening block 10 can abut the positioning wheel 5 through the fastening layer 11, thereby completing the fixed connection between the fastening block 10 and the positioning wheel 5, so that the weighing barrel 3 can maintain a tilted state, and then the bottom plate 12 is pushed, and the bottom plate 12 drives the sealing layer 13 to move along the inner cavity of the weighing barrel 3. When the bottom plate 12 and the sealing layer 13 move to the opening of the weighing barrel 3, the protrusion 8 on the surface of the limit block will limit the movement of the sealing layer 13, thereby avoiding The bottom plate 12 and the sealing layer 13 accidentally detach from the weighing barrel 3, and the residual powder in the weighing barrel 3 will be pushed to the opening of the weighing barrel 3 by the bottom plate 12 and the sealing layer 13. After removing the cleaning brush 16 on the side of the electronic scale body 1, the powder on the surface of the bottom plate 12 and the sealing layer 13 can be brushed off, which can not only reduce the weight error of the automatic weighing device pouring out the powder, but also avoid the residual powder in the weighing barrel 3 affecting the next weighing, thereby improving the weighing accuracy of the automatic weighing device, and then reverse the fastening screw 9, the fastening screw 9 drives the moving plate 6 and the fastening block 10 to reset, and releases the fixed connection between the fastening block 10 and the positioning wheel 5, and then the weighing barrel 3 can be smoothly reset, and the worker can also pull the bottom plate 12 and the sealing layer 13 by the push plate 15 to achieve rapid reset.

[0020] At the same time, in this application, the relevant process and principle of automatic weighing of powder is realized through the cooperation between the electronic scale body 1 and the weighing bucket 3, which has been fully disclosed in a powder automatic weighing device (application number: CN202320910173.1).

[0021] As a preferred embodiment, the column 2 has a rectangular structure. The rotating assembly 4 movably connected to the upper end of the column 2 is composed of a rotating rod and a mounting block. The rotating rod has a cylindrical structure, the mounting block has a square structure, and the side of the mounting block facing the weighing bucket 3 has an arc-shaped structure. At the same time, the axial section of the rotating assembly 4 has a T-shaped structure.

[0022] In this embodiment, as Figure 1 , Figure 3 and Figure 4 , the setting of the rotating assembly 4 enables the upper end of the column 2 to be movably connected to the weighing bucket 3, and the arc-shaped concave surface of the mounting block can assist in enhancing the stability of the connection between the mounting block and the weighing bucket 3.

[0023] As a preferred embodiment, the positioning wheel 5 fixedly connected to the rotating assembly 4 has a circular structure. A plurality of anti-slip grooves are evenly formed on the arc surface of the positioning wheel 5, and the positioning wheel 5 and the rotating assembly 4 are combined to form an I-shaped structure.

[0024] In this embodiment, as Figure 1 , Figure 3 and Figure 4 , the setting of the positioning wheel 5 enables the weighing bucket 3 to be stable at different inclination angles according to actual needs, so that the weighing bucket 3 and the column 2 can be flexibly and fixedly connected through the cooperation of the rotating assembly 4, the positioning wheel 5 and the fastening block 10, which is convenient for subsequent cleaning of the residual powder inside the weighing bucket 3.

[0025] As a preferred embodiment, the moving plate 6 has an L-shaped structure. The bent part of the moving plate 6 is slidably connected to the inner side surface of the column 2, and the fastening block 10 fixedly connected to the moving plate 6 has a square structure. The moving plate 6 and the fastening block 10 are combined to form a 冂-shaped structure. At the same time, the fastening layer 11 fixedly connected to the lower surface of the fastening block 10 has a concave-shaped structure, and the groove of the fastening layer 11 has an arc-shaped structure.

[0026] In this embodiment, as Figure 1 and Figure 4 , the bent part of the moving plate 6 fits the inner side surface of the column 2, which can then prevent the moving plate 6 from rotating synchronously with the fastening screw rod 9, thus ensuring that the moving plate 6 can drive the fastening block 10 to move stably. At the same time, the fastening layer 11 is made of soft rubber material, and the size of the groove on the lower surface of the fastening layer 11 is adapted to the arc surface of the positioning wheel 5. Therefore, the stability of the fixation between the fastening block 10 and the positioning wheel 5 can be effectively enhanced.

[0027] As a preferred embodiment, the weighing bucket 3 has a cylindrical structure. Two groups of limiting plates 7 are fixedly connected to both sides of the upper surface of the weighing bucket 3. Both groups of limiting plates 7 have a fan-shaped ring structure. At the same time, the three convex blocks 8 fixedly connected to the inner arc surface of the limiting plate 7 all have a hemispherical structure.

[0028] In this embodiment, if Figure 1 , Figure 3 and Figure 4 The thickness of the weighing barrel 3 is equal to the thickness of the limiting plate 7, and the setting of the protrusion 8 can correspondingly hinder the movement of the sealing layer 13, and then limit the movement range of the bottom plate 12 and the sealing layer 13, to prevent the bottom plate 12 and the sealing layer 13 from accidentally detaching from the weighing barrel 3. At the same time, the positions of the limiting block and the protrusion 8 can also reduce the obstruction effect of the two on powder cleaning.

[0029] As a preferred embodiment, the limiting ring 14 fixedly connected to the weighing barrel 3 has a circular ring structure, the inner diameter of the limiting ring 14 is smaller than the diameter of the bottom plate 12, and the push plate 15 fixedly connected to the middle of the lower surface of the bottom plate 12 has a U-shaped structure.

[0030] In this embodiment, if Figure 1 and Figure 3 The setting of the limit ring 14 can effectively limit the moving range of the bottom plate 12 and the sealing layer 13 in the weighing barrel 3, preventing the bottom plate 12 and the sealing layer 13 from accidentally falling from the bottom of the weighing barrel 3. In addition, the setting of the push plate 15 makes it convenient for workers to quickly move the bottom plate 12 and the sealing layer 13, thereby improving the cleaning efficiency and resetting efficiency of the automatic weighing device for powder.

[0031] As a preferred embodiment, the bottom plate 12 has a circular structure, a fixing groove is provided on the arc surface of the bottom plate 12, and the sealing layer 13 is fixedly connected to the arc surface of the bottom plate 12 through the fixing groove, and the sealing layer 13 has a circular ring structure, the outer diameter of the sealing layer 13 is matched with the inner diameter of the weighing barrel 3, and the axial section of the sealing layer 13 has a convex structure.

[0032] In this embodiment, if Figure 1 and Figure 3 The sealing layer 13 is made of soft rubber material, and the size of the sealing layer 13 and the weighing bucket 3 are matched, so the sealing performance of the connection between the sealing layer 13 and the weighing bucket 3 can be effectively enhanced. Therefore, in the process of the bottom plate 12 driving the sealing layer 13 to move synchronously, the sealing layer 13 can clean the powder remaining on the inner side of the weighing bucket 3 accordingly, ensuring that all the powder in the weighing bucket 3 can be poured out. At the same time, the structural setting between the sealing layer 13 and the bottom plate 12 can help enhance the stability of the connection between the two.

[0033] The automatic weighing device of the utility model cooperates with the weighing barrel 3, the bottom plate 12, the sealing layer 13, the limiting ring 14, the limiting plate 7 and the protrusion 8, so that the bottom plate 12 can clean the residual powder in the weighing barrel 3 through the sealing layer 13, thereby reducing the weight error of the powder poured out by the weighing device, and can also avoid the residual powder from interfering with the weighing result of the next group of powder, thereby improving the weighing accuracy of the automatic weighing device.

Claims

1. An automatic weighing device, comprising: a column (2) and a weighing bucket (3), an electromagnet and the column (2) are respectively fixedly connected to the upper surface of the electronic scale main body (1), and a cleaning brush (16) is arranged on the side surface of the electronic scale main body (1), characterized in that: the upper end of the column (2) is movably connected to a rotating assembly (4) through a bearing, one end of the rotating assembly (4) is fixedly connected to the weighing bucket (3), the other end of the rotating assembly (4) is fixedly connected to a positioning wheel (5), and a fastening screw rod (9) is movably connected to the upper surface of the column (2) through a bearing, and the moving plate (6) is slidably connected to the upper end of the column (2) through the screwed fastening screw rod (9). At the same time, a fastening block (10) is correspondingly connected to the position of the lower end of the moving plate (6) relative to the positioning wheel (5), and the lower end of the fastening block (10) is fixedly connected to a fastening layer (11). The upper surface of the weighing bucket (3) is symmetrically connected with limiting plates (7), the inner side surfaces of the limiting plates (7) are symmetrically connected with convex blocks (8), and the inner side surface of the lower end of the weighing bucket (3) is fixedly connected with a limiting ring (14), and the bottom plate (12) is slidably connected to the inside of the weighing bucket (3) through the limiting ring (14). At the same time, a sealing layer (13) is fixedly connected to the outer side surface of the bottom plate (12), and the sealing layer (13) is slidably connected to the inner side surface of the weighing bucket (3).

2. An automatic weighing device according to claim 1, characterized in that, the column (2) has a rectangular structure, the rotating assembly (4) movably connected to the upper end of the column (2) is composed of a rotating rod and a mounting block, the rotating rod has a cylindrical structure, the mounting block has a square structure, and the side of the mounting block opposite to the weighing bucket (3) has an arc-shaped structure. At the same time, the cross-section of the rotating assembly (4) has a T-shaped structure.

3. An automatic weighing device according to claim 1, characterized in that, the positioning wheel (5) fixedly connected to the rotating assembly (4) has a circular structure, a plurality of anti-slip grooves are evenly arranged on the arc surface of the positioning wheel (5), and the positioning wheel (5) and the rotating assembly (4) together form a T-shaped structure.

4. An automatic weighing device according to claim 1, characterized in that, the moving plate (6) has an L-shaped structure, the bent part of the moving plate (6) is slidably connected to the inner side surface of the column (2), the fastening block (10) fixedly connected to the moving plate (6) has a square structure, and the moving plate (6) and the fastening block (10) together form a 冂-shaped structure. At the same time, the fastening layer (11) fixedly connected to the lower surface of the fastening block (10) has a concave-shaped structure, and the groove of the fastening layer (11) has an arc-shaped structure.

5. An automatic weighing device according to claim 1, characterized in that, the weighing bucket (3) has a cylindrical structure, two groups of limiting plates (7) are fixedly connected to both sides of the upper surface of the weighing bucket (3), and both groups of limiting plates (7) have a fan-shaped ring structure. At the same time, the three convex blocks (8) fixedly connected to the inner arc surface of the limiting plate (7) all have a hemispherical structure.

6. An automatic weighing device according to claim 1, characterized in that, The limiting ring (14) fixedly connected to the weighing barrel (3) has a circular ring structure, the inner diameter of the limiting ring (14) is smaller than the diameter of the bottom plate (12), and the pushing plate (15) fixedly connected to the middle part of the lower surface of the bottom plate (12) has a U-shaped structure.

7. An automatic weighing device according to claim 1, It is characterized in that The bottom plate (12) is of circular structure, a fixing groove is provided on the arc surface of the bottom plate (12), and the sealing layer (13) is fixedly connected to the arc surface of the bottom plate (12) through the fixing groove, and the sealing layer (13) is of circular ring structure, the outer diameter of the sealing layer (13) is matched with the inner diameter of the weighing barrel (3), and the axial section of the sealing layer (13) is of convex structure.

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