Size detecting and sorting device for injection products
By combining a vibratory feeder, an automated conveyor, and a fully automatic image measuring instrument with a compressed air spray gun, the problem of inaccurate classification of defective injection molded products was solved, achieving efficient and accurate sorting and inspection of injection molded products, thus improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI NO 1 MACHINE TOOL FOUNDRY SUZHOU
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-15
AI Technical Summary
Existing injection molded product size detection and sorting devices cannot accurately distinguish between different types of defective products, leading to increased difficulty in subsequent processing.
A size detection and sorting device for injection molded products was designed. It utilizes a vibratory feeder, an automated conveyor, a fully automatic image measuring instrument, and a compressed air spray gun. Through staggered defective product discharge channels and finished product guide troughs, combined with optical imaging and image processing technology, it can accurately sort different types of defective products.
It enables efficient and accurate sorting of injection molded products, reduces material accumulation and blockage, improves testing efficiency and product quality, and facilitates subsequent processing and storage.
Smart Images

Figure CN224237586U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of injection molding product manufacturing technology, and specifically relates to an injection molding product size detection and sorting device. Background Technology
[0002] In the production process of injection-molded products, dimensional accuracy and appearance quality are crucial indicators of their quality. Due to the complexity and uncertainty of the injection molding process, the produced injection-molded products may have dimensional deviations, appearance defects, and other issues. If these substandard products enter the market, they will not only affect product performance and customer satisfaction but may also cause economic losses and reputational risks to the company. Therefore, dimensional inspection and sorting of injection-molded products are key steps in ensuring product quality.
[0003] Traditional methods for inspecting and sorting injection-molded products primarily rely on manual labor. Workers visually inspect the products and use simple measuring tools such as calipers and micrometers to check their dimensions and appearance, removing defective products. However, with the continuous expansion of injection-molded product production scale and the increasing demands for product quality, this manual inspection and sorting method has gradually revealed many shortcomings. To improve the efficiency and accuracy of inspection and sorting, and reduce labor costs, automated injection-molded product size inspection and sorting devices have emerged. These devices utilize advanced sensor technology, image processing technology, and automated control technology to achieve rapid, accurate inspection and efficient sorting of injection-molded products. However, during the sorting process, different types of defective products are collected together, and existing equipment may not be able to accurately distinguish between different types of defective products, leading to inaccurate defect classification and increasing the difficulty of subsequent processing.
[0004] In view of this, we propose an injection molding product size detection and sorting device that can sort out different types of defective injection molding products and has a clear classification of defective products to solve the above problems. Utility Model Content
[0005] The present invention aims to solve the technical problem in the prior art where different types of defective products are often sorted and collected together during the size detection and sorting of injection molded products. This can lead to the equipment being unable to accurately distinguish between different types of defective products, increasing the difficulty of subsequent defective product processing.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A size detection and sorting device for injection molded products, comprising:
[0008] Vibratory feeder is used to vibrate and feed injection molded products onto a linear vibrating guide rail;
[0009] Automated conveyors are used to transport injection molded products fed from linear vibrating guide rails;
[0010] The fully automatic image measuring instrument is used to inspect the dimensions and appearance of injection molded products fed by the conveyor belt on an automated conveyor.
[0011] The defective product unloading channel is equipped with several channels, each used for sorting and unloading different types of defective products. The defective product unloading channels are located on both sides of the automated conveyor and are arranged in an alternating manner. Compressed air spray guns are located opposite the defective product unloading channels.
[0012] Different types of defective products are conveyed by the conveyor belt on the automated conveyor to the corresponding defective product discharge channel. The defective products are then blown off the conveyor belt into the defective product discharge channel by the action of compressed air spray guns, so as to achieve sorting, discharge and collection of different types of defective products.
[0013] Preferably, the automated conveyor is fixed on the top of the frame, and the fully automatic image measuring instrument is mounted on the frame and located between the defective product unloading channel and the linear vibrating guide rail.
[0014] Preferably, the defective product unloading channel is set outward and downward by an automated conveyor, and a defective product receiving trough is placed at the bottom of the defective product unloading channel.
[0015] Preferably, the discharge end of the automated conveyor is provided with an outward and downward-facing finished product guide chute, and the bottom of the finished product guide chute is provided with a finished product receiving chute.
[0016] Preferably, the defective product unloading channel is fixed to the frame by a support frame at its bottom.
[0017] Preferably, the mounting base of the compressed air spray gun is installed on a horizontal support plate, the horizontal support plate is fixedly sleeved on the outer side of the upright, and the upright is fixed to the top of the frame.
[0018] Preferably, the feed end of the automated conveyor and the discharge port located on the straight vibrating guide rail are provided with two limit plates on both sides to limit the discharge of injection molded products. The limit plates are fixedly connected to the mounting plate, and the mounting plate is fixed on the brackets on both sides of the automated conveyor.
[0019] Compared with the prior art, the technical effects and advantages of this utility model are:
[0020] 1. This injection molded product size detection and sorting device utilizes the coordinated operation of various components to achieve size detection and sorting of injection molded products. The vibratory feeder uses vibration to arrange and feed products in an orderly manner; the automated conveyor provides stable product transport power via a conveyor belt; the fully automatic image measuring instrument, based on optical imaging and image processing technology, compares the collected product image data with preset qualification standards to determine product quality; the compressed air spray gun uses high-speed airflow generated by compressed air to provide the power to blow away defective products; the defective product discharge channel and finished product guide chute utilize gravity to facilitate the smooth sliding and collection of defective and finished products.
[0021] 2. Multiple defective product discharge channels allow for the classification and collection of different types of defective products, facilitating subsequent analysis of the causes of defects and contributing to improvements in production processes and product quality. The staggered discharge channel design increases the number of channels within a limited space, and combined with the rapid blowing action of compressed air spray guns, achieves efficient sorting and discharge operations.
[0022] 3. The inclined setting of the defective product unloading channel and the finished product guide chute utilizes gravity to allow defective and finished products to slide smoothly into the corresponding receiving chute, reducing material accumulation and blockage, and ensuring the continuity of the sorting process. The defective product receiving chute and the finished product receiving chute collect defective and finished products respectively, which facilitates subsequent unified processing, packaging, storage and transportation processes.
[0023] 4. The limiting plate at the feed end of the automated conveyor limits the product, ensuring that the product enters the conveyor belt accurately. This guarantees the accuracy of the product's position during the conveying process, which helps the fully automatic image measuring instrument to perform more precise size and appearance inspection and reduces inspection errors caused by product position deviation. Attached Figure Description
[0024] Figure 1 This is a first-view diagram of the present invention;
[0025] Figure 2 This is a second-view diagram of the present invention;
[0026] Figure 3 This is a state diagram illustrating the sorting of injection-molded products according to this utility model;
[0027] Figure 4 This is a schematic diagram of the defective product unloading channel of this utility model;
[0028] Figure 5 This is a schematic diagram of the installation structure of the compressed air spray gun of this utility model;
[0029] Figure 6 This is a schematic diagram of the installation structure of the limiting upright plate of this utility model.
[0030] In the diagram: 1. Vibratory feeder; 2. Straight vibratory guide rail; 3. Automated conveyor; 4. Conveyor belt; 5. Fully automatic image measuring instrument; 6. Defective product unloading channel; 7. Compressed air spray gun; 8. Frame; 9. Defective product receiving trough; 10. Finished product guide trough; 11. Finished product receiving trough; 12. Support frame; 13. Mounting base; 14. Horizontal support plate; 15. Upright pole; 16. Limiting upright plate; 17. Mounting plate; 18. Bracket. Detailed Implementation
[0031] 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.
[0032] The following combination Figures 1 to 6 This application will be described in further detail.
[0033] This application discloses a size detection and sorting device for injection molded products, including a vibratory feeder 1, an automated conveyor 3, a fully automatic image measuring instrument 5, a defective product unloading channel 6, and a compressed air spray gun 7; the automated conveyor 3 is fixed on the top of the frame 8, and the fully automatic image measuring instrument 5 is installed on the frame 8 and located between the defective product unloading channel 6 and the linear vibratory guide rail 2.
[0034] The frame 8 serves as the supporting structure for the entire device, placing the automated conveyor 3 at the top. This makes full use of vertical space, resulting in a compact overall structure and reduced floor space. The fully automatic image measuring instrument 5 is positioned strategically between the defective product unloading channel 6 and the vertical vibration guide rail 2, enabling timely inspection of the incoming injection molded products. This ensures a seamless process from feeding to inspection and sorting, improving work efficiency.
[0035] Vibratory feeder 1 is used to vibrate and feed injection molded products onto the linear vibratory guide rail 2; automated conveyor 3 is used to transport the injection molded products fed from the linear vibratory guide rail 2; fully automatic image measuring instrument 5 is used to inspect the dimensions and appearance of the injection molded products fed from the conveyor belt 4 on the automated conveyor 3; several defective product unloading channels 6 are provided and are used for sorting and unloading different types of defective products. The defective product unloading channels 6 are located on both sides of the automated conveyor 3 and are arranged alternately. A compressed air spray gun 7 is provided opposite the defective product unloading channels 6; the defective product unloading channels 6 are fixed to the frame 8 by the support frame 12 at their bottom. The mounting base 13 of the compressed air spray gun 7 is installed on the horizontal support plate 14. The horizontal support plate 14 is fixedly sleeved on the outer side of the upright 15, and the upright 15 is fixed to the top of the frame 8.
[0036] Different types of defective products are conveyed by the conveyor belt 4 on the automated conveyor 3 to the corresponding defective product discharge channel 6. The defective products are blown off the conveyor belt 4 into the defective product discharge channel 6 by the action of the compressed air spray gun 7, so as to achieve the sorting, discharge and collection of different types of defective products.
[0037] Multiple defective product discharge channels 6 allow for the categorization and collection of different types of defective products. Products with issues such as being too large, too small, or having appearance defects can fall into their respective channels, facilitating subsequent processing and analysis of the causes of defects. The staggered arrangement design increases the number of discharge channels within a limited space, while the compressed air spray gun 7 quickly blows away defective products, achieving efficient sorting and discharge operations.
[0038] The defective product unloading channel 6 is set outward and downward by the automated conveyor 3, and a defective product receiving trough 9 is placed at the bottom of the defective product unloading channel 6.
[0039] The discharge end of the automated conveyor 3 is provided with an outward and downward-facing finished product guide trough 10, and the bottom of the finished product guide trough 10 is provided with a finished product receiving trough 11.
[0040] The inclined design of the defective product receiving trough 9 utilizes gravity to allow blown-off defective products to slide smoothly into the trough, reducing accumulation and blockage of defective products in the defective product discharge channel 6 and ensuring the continuity of the sorting process. The defective product receiving trough 9 can collect defective products centrally for unified processing, such as rework or scrapping.
[0041] The finished product receiving trough 11 can collect qualified injection molded products, facilitating subsequent packaging, storage, and transportation processes, and ensuring the quality of the finished products.
[0042] The automated conveyor 3 has two limiting plates 16 on both sides at the inlet and outlet of the linear vibrating guide rail 2, which are used to limit the discharge of injection molded products. The limiting plates 16 are fixedly connected to the mounting plates 17, which are fixed to the brackets 18 on both sides of the automated conveyor 3. The limiting plates 16 can limit the injection molded products exiting from the linear vibrating guide rail 2, so that the products accurately enter the conveyor belt 4 of the automated conveyor 3, avoiding product deviation or falling during the feeding process, and improving the accuracy and stability of feeding. The accurate position of the product on the conveyor belt 4 helps the fully automatic image measuring instrument 5 to more accurately inspect its size and appearance, reducing the inspection error caused by product position deviation.
[0043] The sorting process of this injection molded product size inspection and sorting device is as follows:
[0044] Feeding: Vibratory feeder 1 feeds the injection molded products onto the linear vibratory guide rail 2 in an orderly manner through vibration, in preparation for subsequent conveying and testing.
[0045] Conveying: The automated conveyor 3 receives the injection molded products fed from the linear vibrating guide rail 2 and conveys them forward via the conveyor belt 4. At the feeding end, the limiting plate 16 ensures that the products accurately enter the conveyor belt 4.
[0046] Inspection: When the injection molded product passes through the fully automatic image measuring instrument 5 along the conveyor belt 4, the measuring instrument performs dimensional and appearance inspections to determine whether the product is defective and the type of defective product.
[0047] Sorting and feeding
[0048] Defective product handling: Different types of defective products are conveyed by the conveyor belt 4 to the corresponding defective product unloading channel 6. The compressed air spray gun 7 opposite the channel is activated to blow the defective products off the conveyor belt 4 into the outward and downward inclined defective product unloading channel 6, and finally fall into the defective product receiving trough 9 at the bottom.
[0049] Finished product processing: Qualified products continue to be conveyed to the discharge end by the conveyor belt 4, and slide down to the bottom finished product receiving trough 11 through the outward and downward-facing finished product guide trough 10.
[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A size detection and sorting device for injection molded products, characterized in that, include: Vibratory feeder (1) is used to vibrate and feed injection molded products onto a linear vibratory guide rail (2); An automated conveyor (3) is used to transport injection molded products fed from the linear vibrating guide rail (2); The fully automatic image measuring instrument (5) is used to inspect the size and appearance of the injection molded products fed by the conveyor belt (4) on the automated conveyor (3); The defective product unloading channel (6) is provided with several and is used for sorting and unloading different types of defective products. The defective product unloading channel (6) is located on both sides of the automated conveyor (3) and is arranged in an alternating manner. A compressed air spray gun (7) is provided opposite the defective product unloading channel (6). Before different types of defective products are transported to the corresponding defective product discharge channel (6) by the conveyor belt (4) on the automated conveyor (3), the defective products are blown off the conveyor belt (4) into the defective product discharge channel (6) by the action of the compressed air spray gun (7) so as to achieve the sorting, discharge and collection of different types of defective products.
2. The injection molded product size detection and sorting device according to claim 1, characterized in that: The automated conveyor (3) is fixed on the top of the frame (8), and the fully automatic image measuring instrument (5) is installed on the frame (8) and located between the defective product unloading channel (6) and the linear vibration guide rail (2).
3. The injection molded product size detection and sorting device according to claim 1, characterized in that: The defective product unloading channel (6) is set outward and downward from the automated conveyor (3), and a defective product receiving trough (9) is placed at the bottom of the defective product unloading channel (6).
4. The injection molded product size detection and sorting device according to claim 1, characterized in that: The discharge end of the automated conveyor (3) is provided with an outward and downward finished product guide trough (10), and the bottom of the finished product guide trough (10) is provided with a finished product receiving trough (11).
5. The injection molded product size detection and sorting device according to claim 2, characterized in that: The defective product unloading channel (6) is fixed to the frame (8) by the support frame (12) at its bottom.
6. The injection molded product size detection and sorting device according to claim 2, characterized in that: The mounting base (13) of the compressed air spray gun (7) is installed on the horizontal support plate (14), the horizontal support plate (14) is fixedly sleeved on the outer side of the upright (15), and the upright (15) is fixed to the top of the frame (8).
7. The injection molded product size detection and sorting device according to claim 1, characterized in that: The feed end of the automated conveyor (3) and the discharge port of the linear vibrating guide rail (2) are provided with two limit plates (16) on both sides to limit the discharge of injection molded products. The limit plates (16) are fixedly connected to the mounting plate (17), and the mounting plate (17) is fixed on the brackets (18) on both sides of the automated conveyor (3).