Automatic weighing and sorting device

Abstract

The utility model provides an automatic weighing and sorting device which comprises a conveying mechanism used for conveying products in two directions and a weighing mechanism located below the conveying mechanism, and the conveying mechanism comprises a conveying frame, a conveying chain arranged on the conveying frame and a servo motor used for driving the conveying chain to move. The number of the conveying chains is at least three, the conveying chains are horizontally arranged on the conveying frame side by side, a lifting channel is formed between every two adjacent conveying chains, the weighing mechanism comprises a fixing frame located below the conveying frame, a lifting platform arranged on the fixing frame in a lifting and moving mode, a weighing table and a bearing frame, and the weighing table is fixedly arranged on the lifting platform. The bearing frame is positioned and arranged at the top of the weighing platform, when the lifting platform ascends to the highest point, the weighing platform is supported at the bottom of the bearing frame, and the upper end of the bearing frame extends to the position above the conveying chain from the lifting channel. The automatic weighing and sorting device is high in operation safety, simple in structure and small in occupied area, and products cannot slip off in the operation process.

Description

Technical Field

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

[0002] Injection molding machines are widely used in the manufacturing industry to produce various plastic products. To improve production efficiency, most injection molding machines are equipped with industrial robots to automatically extract products. However, accurate product weight measurement is crucial in quality control. Traditionally, workers move products from the assembly line to a scale for weighing and then manually sort them based on the results. This method is inefficient and labor-intensive.

[0003] In response to the above technical problems, a new type of lifting weighing device has been introduced on the market in order to improve production conditions. This device includes a weighing frame, a weighing mechanism, a lifting frame and a transmission mechanism. The weighing mechanism is located at the bottom of the weighing frame, and the lifting frame can move up and down in the weighing frame through the lifting mechanism. The transmission mechanism is installed above the lifting frame for two-way transmission of products. Although the lifting weighing device provides certain conveniences, it still has obvious defects in actual applications: First, the product placed on the transmission mechanism can move horizontally and can also be lifted and lowered vertically with the lifting frame, which increases the demand for balanced force on the bottom bearing surface of the product. Once uneven force distribution occurs, the product may slip and even risk damaging the weighing mechanism. Secondly, since the transmission mechanism needs to be lifted and lowered in conjunction with the lifting mechanism, this limits the length of the transmission mechanism. In some cases, the floor space occupied by the lifting mechanism needs to be expanded, which not only complicates the structure of the device, but also increases the manufacturing cost.

[0004] In view of this, the industry urgently needs an improved weighing device to solve the above problems, so as to simplify the product structure, reduce the footprint, reduce costs and optimize safety. Utility Model Content

[0005] The purpose of the present utility model is to solve the defects in the prior art and provide an automatic weighing and sorting device that will not slip during product weighing operations, has high safety, and has a simple structure and a small footprint.

[0006] In order to solve the above problems, the utility model provides an automatic weighing and sorting device, including a transmission mechanism for bidirectionally conveying products and a weighing mechanism located below the transmission mechanism, the transmission mechanism includes a conveying frame, a conveying chain arranged on the conveying frame and a servo motor for driving the conveying chain to move, at least three conveying chains are provided and are arranged horizontally side by side on the conveying frame, and a lifting channel is formed between two adjacent conveying chains, the weighing mechanism includes a fixed frame located below the conveying frame, a lifting platform arranged on the fixed frame for lifting and moving, a weighing platform and a load-bearing frame, the weighing platform is fixed on the lifting platform, and the load-bearing frame is positioned on the top of the weighing platform. When the lifting platform rises to the highest point, the weighing platform is supported on the bottom of the load-bearing frame, and the upper end of the load-bearing frame extends from the lifting channel to above the conveying chain.

[0007] Compared with the existing technology, the benefits of the present invention are: improved safety: in the existing technology, the product can move horizontally and lift vertically on the transmission mechanism, which can easily cause the product to slip or damage the weighing mechanism. The lifting platform of the present invention only lifts vertically, and the product will not move horizontally during the weighing process, avoiding the risk of the product slipping and damaging the weighing mechanism, and improving the safety performance of the device; simplified structure and reduced floor space: the traditional lifting weighing device couples the transmission mechanism with the lifting mechanism, which has a complex structure and occupies a large space. The present invention adopts an independent conveying chain and lifting platform design, which does not require coupling, simplifies the device structure, reduces the floor space of the lifting mechanism, improves the efficiency and space utilization of the device, and effectively reduces the manufacturing cost of the device; improved efficiency: the cooperation of the conveying chain and the lifting platform realizes the automatic conveying, weighing and sorting of the product, improves production efficiency, facilitates automated operation, and reduces labor costs. In summary, the automatic weighing and sorting device of the present invention has achieved significant improvements in structure, safety, cost and efficiency, effectively solves the defects of the existing technology, and is an innovative design with practical value.

[0008] Specifically, the lifting platform includes a base, a lifting cylinder, and a lifting seat. The base is fixed to a fixed frame, the lifting cylinder is fixed upward on the base, the lifting seat is positioned on the base and rises and falls synchronously with the output end of the lifting cylinder, and the weighing platform is fixed on the upper part of the lifting seat. The lifting control mechanism that combines the lifting cylinder and the lifting seat has advantages such as a simple structure. During use, the lifting seat is raised and lowered by controlling the lifting cylinder, thereby controlling the raising and lowering of the weighing platform fixed on it, completing the weighing of the products placed on the conveyor chain. This facilitates the subsequent control of the conveyor chain transmission direction based on the weighing results to complete sorting, improving sorting efficiency and ensuring the accuracy of the weighing process.

[0009] Specifically, the load-bearing frame includes a base frame, multiple vertical bars, and multiple cross bars. The base frame is positioned on the lifting seat and located on the top of the weighing platform. The vertical bars are vertically supported and fixed between the base frame and the cross bars. The cross bars are located directly below the lifting channel. When the lifting seat rises to its highest point, the weighing platform is supported at the bottom of the base frame, and the cross bars extend from the lifting channel to the top of the conveyor chain. After applying this structure, the setting of the load-bearing frame reduces the direct contact between the weighed product and the weighing platform, which can avoid physical wear and potential damage to the weighing platform and extend the service life of the weighing platform. The frame structure formed by the base frame, cross bars, and vertical bars not only provides stable support for the product during weighing, but also the space formed between the cross bars provides the necessary avoidance space between the load-bearing frame and the conveyor chain, preventing jamming or damage caused by contact and ensuring the continuous and stable operation of the system.

[0010] As an improvement, guide holes are provided at the four corners of the bottom of the chassis, and guide posts corresponding to the guide holes are provided on the lifting seat. The guide posts slide up and down with the guide holes, and the tops of the guide posts have anti-slip flanges. Columns are provided on the base to support the four corners of the bottom of the chassis. A gap area is provided between the tops of the columns and the anti-slip flanges for the chassis to move up and down. When the chassis drops to the lowest point, the weighing platform and the chassis are separated from each other. This structure achieves a stable positioning of the weighing frame on the lifting seat through the cooperation of the guide posts and the guide holes. At the same time, the provision of the anti-slip flange effectively prevents the lifting seat from accidentally falling off during the lifting process, thereby improving the safety of the system. In addition, the combination of the gap area and the posts effectively reduces the bearing pressure of the weighing platform, preventing the weighing platform from being damaged by the weight of the weighed objects. The support of the posts enhances the pressure resistance of the weighing platform. The buffer mechanism formed between the gap area and the posts effectively disperses excessive impact force, protects the weighing platform, extends its service life, and improves the overall reliability of the system.

[0011] As an improvement, universal wheels with locking functions are installed at the four corners of the bottom of the fixed frame. This structure not only facilitates the movement of the fixed frame, allowing the weighing mechanism to be easily moved to different work areas for weighing operations, meeting the needs of changing work environments, but also during use, by locking the universal wheels, the fixed frame can be placed firmly on the ground, avoiding accidents during movement, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is the first stereogram of the present utility model;

[0014] Figure 3 This is the second stereoscopic view of the present invention;

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] Description of reference numerals:

[0017] 1. Transmission mechanism; 10. Lifting channel; 11. Conveyor frame; 12. Conveyor chain; 13. Servo motor; 2. Weighing mechanism; 3. Fixed frame; 4. Lifting platform; 41. Base; 411. Column; 42. Lifting cylinder; 43. Lifting seat; 431. Guide column; 432. Anti-slip flange; 5. Weighing platform; 6. Load-bearing frame; 61. Base frame; 610. Guide hole; 62. Vertical rod; 63. Horizontal rod; 7. Clearance area; 8. Universal wheel. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, in the utility model, the automatic weighing and sorting device includes a transmission mechanism 1 for bidirectionally conveying products and a weighing mechanism 2 located below the transmission mechanism 1. The transmission mechanism 1 includes a conveying frame 11, a conveying chain 12 arranged on the conveying frame 11 and a servo motor 13 for driving the conveying chain 12 to move. There are at least three conveying chains 12 and they are arranged horizontally side by side on the conveying frame 11. A lifting channel 10 is formed between two adjacent conveying chains 12. The weighing mechanism 2 includes a fixed frame 3 located below the conveying frame 11, a lifting platform 4 that is lifted and moved on the fixed frame 3, a weighing platform 5 and a load-bearing frame 6. The weighing platform 5 is fixed on the lifting platform 4, and the load-bearing frame 6 is positioned on the top of the weighing platform 5. When the lifting platform 4 rises to the highest point, the weighing platform 5 is supported on the bottom of the load-bearing frame 6, and the upper end of the load-bearing frame 6 extends from the lifting channel 10 to above the conveying chain 12.

[0020] In the prior art, products can move horizontally and lift vertically on the transmission mechanism 1, which can easily cause the product to slip or damage the weighing mechanism 2. The lifting platform 4 of the present invention only lifts vertically, and the product will not move horizontally during the weighing process, avoiding the risk of the product slipping and damaging the weighing mechanism 2, and improving the safety performance of the device. The traditional lifting weighing device couples the transmission mechanism 1 with the lifting mechanism, which has a complex structure and occupies a large space. The present invention adopts an independent conveying chain 12 and lifting platform 4 design, which does not require coupling, simplifies the device structure, reduces the floor space of the lifting mechanism, improves the efficiency and space utilization of the device, and also effectively reduces the manufacturing cost of the device. The cooperation of the conveying chain 12 and the lifting platform 4 in the present invention realizes the automatic conveying, weighing and sorting of products, improves production efficiency, facilitates automated operation, and reduces labor costs. In summary, the automatic weighing and sorting device of the present invention has achieved significant improvements in structure, safety, cost and efficiency, effectively solves the defects of the prior art, and is an innovative design with practical value.

[0021] like Figure 2 or Figure 4 As shown, the lifting platform 4 includes a base 41, a lifting cylinder 42 and a lifting seat 43. The base 41 is fixedly mounted on the fixed frame 3, the lifting cylinder 42 is fixedly mounted upward on the base 41, the lifting seat 43 is positioned on the base 41 and rises and falls synchronously with the output end of the lifting cylinder 42, and the weighing platform 5 is fixedly mounted on the upper part of the lifting seat 43. The lifting cylinder 42 can be an ordinary air cylinder or oil cylinder, or a screw motor drive mechanism. The lifting control mechanism of the lifting cylinder 42 and the lifting seat 43 has the advantages of simple structure. When in use, the lifting seat 43 is lifted and lowered by controlling the lifting cylinder 42, thereby controlling the lifting and lowering of the weighing platform 5 fixed on the upper part thereof, completing the weighing of the products placed on the conveyor chain 12, and facilitating the subsequent control of the transmission direction of the conveyor chain 12 according to the weighing results to complete the sorting, thereby improving the sorting efficiency and ensuring the accuracy of the weighing process.

[0022] like Figure 2 or Figure 4As shown, the load-bearing frame 6 includes a base frame 61, multiple vertical bars 62, and multiple cross bars 63. The base frame 61 is positioned on the lifting seat 43 and located on the top of the weighing platform 5. The vertical bars 62 are vertically supported and fixed between the base frame 61 and the cross bars 63. The cross bars 63 are located directly below the lifting channel 10. When the lifting seat 43 rises to its highest point, the weighing platform 5 is supported at the bottom of the base frame 61, and the cross bars 63 extend from the lifting channel 10 to above the conveyor chain 12. With this structure, the configuration of the load-bearing frame 6 reduces direct contact between the weighing product and the weighing platform 5, thereby preventing physical wear and potential damage to the weighing platform 5 and extending the service life of the weighing platform 5. The frame structure formed by the base frame 61, cross bars 63, and vertical bars 62 not only provides stable support for the product during weighing, but also the space formed between the cross bars 63 provides the necessary clearance between the load-bearing frame 6 and the conveyor chain 12, preventing jamming or damage caused by contact and ensuring the continuous and stable operation of the system.

[0023] like Figure 3 and Figure 4 As shown, guide holes 610 are provided at the four corners of the bottom of the base frame 61, and guide columns 431 corresponding to the guide holes 610 are provided upward on the lifting seat 43. The guide columns 431 slide up and down with the guide holes 610 and the top of the guide columns 431 has an anti-slip flange 432. The base 41 is provided with columns 411 facing upward for supporting the four corners of the bottom of the base frame 61. A gap area 7 is provided between the top of the column 411 and the anti-slip flange 432 for the base frame 61 to move up and down. When the base frame 61 drops to the lowest point, the weighing platform 5 and the base frame 61 are separated from each other. This structure, through the cooperation of guide posts 431 and guide holes 610, ensures that the weighing frame is securely positioned on the lifting base 43. At the same time, the provision of anti-drop flanges 432 effectively prevents the lifting base 43 from accidentally falling off during the lifting process, thereby improving the safety of the system. Furthermore, the combination of gap area 7 and columns 411 effectively reduces the bearing pressure of the weighing platform 5, preventing the weighing platform 5 from being damaged by the excessive weight of the weighed object. The support of columns 411 enhances the compressive strength of the weighing platform 5. The buffer mechanism formed between gap area 7 and columns 411 effectively disperses excessive impact forces, protecting the weighing platform 5, extending its service life, and improving the overall reliability of the system.

[0024] like Figure 1 or Figure 2 or Figure 3As shown, the four corners of the bottom of the fixed frame 3 are equipped with locking universal wheels 8. During use, the fixed frame 3 and the conveyor frame 11 are typically fixed together using a bolt and nut assembly to achieve a stable connection between the two and prevent shaking during operation. After applying this structure, not only is the fixed frame 3 easy to move, allowing the weighing mechanism 2 to be easily moved to different work areas for weighing operations, meeting the needs of changing work environments, but during use, by locking the universal wheels 8, the fixed frame 3 can be firmly placed on the ground, avoiding accidents during movement, and improving user safety.

[0025] Although the disclosure is as described above, the scope of protection of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of protection of the utility model.

Claims

1. An automatic weighing and sorting device, comprising a transmission mechanism (1) for bidirectionally conveying products and a weighing mechanism (2) located below the transmission mechanism (1), characterized in that: The transmission mechanism (1) includes a conveying frame (11), a conveying chain (12) arranged on the conveying frame (11) and a servo motor (13) for driving the conveying chain (12) to move. The conveying chains (12) are at least three and are arranged horizontally side by side on the conveying frame (11). A lifting channel (10) is formed between two adjacent conveying chains (12). The weighing mechanism (2) includes a fixed frame (3) located below the conveying frame (11), a lifting platform (4) arranged on the fixed frame (3) for lifting and moving, a weighing platform (5) and a load-bearing frame (6). The weighing platform (5) is fixed on the lifting platform (4), and the load-bearing frame (6) is positioned on the top of the weighing platform (5). When the lifting platform (4) rises to the highest point, the weighing platform (5) is supported on the bottom of the load-bearing frame (6), and the upper end of the load-bearing frame (6) extends from the lifting channel (10) to the top of the conveying chain (12).

2. The automatic weighing and sorting device according to claim 1, characterized in that: The lifting platform (4) includes a base (41), a lifting cylinder (42) and a lifting seat (43), wherein the base (41) is fixedly arranged on the fixed frame (3), the lifting cylinder (42) is fixedly arranged upward on the base (41), the lifting seat (43) is positioned on the base (41) and rises and falls synchronously with the output end of the lifting cylinder (42), and the weighing platform (5) is fixedly arranged on the upper part of the lifting seat (43).

3. The automatic weighing and sorting device according to claim 2, characterized in that: The load-bearing frame (6) includes a base frame (61), a plurality of vertical rods (62) and a plurality of cross rods (63). The base frame (61) is positioned on the lifting seat (43) and is located on the top of the weighing platform (5). The vertical rods (62) are vertically supported and fixed between the base frame (61) and the cross rods (63). The cross rods (63) are located directly below the lifting channel (10). When the lifting seat (43) rises to the highest point, the weighing platform (5) is supported on the bottom of the base frame (61), and the cross rods (63) extend from the lifting channel (10) to the top of the conveying chain (12).

4. The automatic weighing and sorting device according to claim 3, characterized in that: The bottom four corners of the base frame (61) are provided with guide holes (610), and the lifting seat (43) is provided with guide columns (431) corresponding to the guide holes (610). The guide columns (431) and the guide holes (610) are slidably matched with each other up and down, and the top of the guide columns (431) has an anti-slip flange (432). The base (41) is provided with columns (411) for supporting the bottom four corners of the base frame (61). A gap area (7) for the base frame (61) to move up and down is provided between the top of the column (411) and the anti-slip flange (432). When the base frame (61) descends to the lowest point, the weighing platform (5) and the base frame (61) are separated from each other.

5. The automatic weighing and sorting device according to claim 1, characterized in that: Universal wheels (8) with a locking function are provided at the four corners of the bottom of the fixing frame (3).

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