An injection molded product size on-line measuring device
By designing an online measurement device for injection molded product dimensions, and utilizing an automated combination of a measurement conveyor and an image acquisition device, the problems of measurement accuracy and efficiency caused by manual operation were solved, enabling accurate and efficient measurement and automatic rejection of injection molded product dimensions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUN SHAN LI JIE SU JIAO WU JIN YOU XIAN GONG SI
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
Existing injection molded product dimension measuring devices rely on manual operation, resulting in limited measurement accuracy and efficiency, making accurate measurement impossible and inefficient.
An online measurement device for injection molded product dimensions was designed. It adopts a combination structure of a measuring conveyor, a measuring conveyor belt, a limiting frame, a transparent plate, a guide frame, and guide rollers. Combined with an image acquisition device and a lighting lamp, it realizes automated product dimension measurement.
By automating the measurement process, manual operation is reduced, and measurement accuracy and efficiency are improved, ensuring accurate measurement of injection molded product dimensions and efficient rejection of defective products.
Smart Images

Figure CN224499393U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of injection molding product measurement technology, and in particular relates to an online measurement device for injection molding product dimensions. Background Technology
[0002] To improve production efficiency, the injection molding industry typically uses automated production lines. During the production process, measuring devices are used to inspect the dimensions of the injection molded products, thereby rejecting those with large dimensional errors.
[0003] The existing utility model with authorization announcement number CN209623619U discloses a dimension detection device for injection molded products, including a first worktable and a dimension detection unit. A second worktable is provided on the upper surface of the first worktable, and optical glass is provided on the second worktable. The dimension detection unit is installed on the first worktable and includes an image acquisition device, a first drive component for controlling the lifting and lowering of the image acquisition device, a second drive component for controlling the movement of the image acquisition device along the X-axis, and a third drive component for controlling the movement of the image acquisition device along the Y-axis.
[0004] Using the above technical solution, when measuring the dimensions of injection-molded products, there is no need to move the position of the optical glass, avoiding the problem of the injection-molded products slipping off the optical glass and falling to the ground, thus improving the detection efficiency of the detection device for measuring the dimensions of injection-molded products. The position of the image acquisition unit can be precisely adjusted, improving the measurement accuracy of the dimension detection device. However, when using the above technical solution to measure the dimensions of injection-molded products, the injection-molded products to be measured are manually placed on the optical glass for inspection. Since the size of the optical glass is fixed and the acquisition range of the image acquisition unit of the measurement device is fixed, it is necessary to manually place the injection-molded products precisely within a certain range on the optical glass. Sometimes, due to human error, the dimensions of the injection-molded products cannot be measured more accurately, and the injection-molded products need to be moved manually, thereby reducing the measurement efficiency of the measurement device.
[0005] To address this issue, we propose an online measurement device for injection molded product dimensions. Utility Model Content
[0006] The purpose of this invention is to solve the problem that existing technologies cannot accurately measure the dimensions of injection molded products, and to propose an online measurement device for the dimensions of injection molded products.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] An online measurement device for injection molded product dimensions includes a measuring conveyor frame. A measuring conveyor belt is rotatably connected inside the measuring conveyor frame. Equally spaced measuring limit frames are fixedly connected to the outer surface of the measuring conveyor belt. Equally spaced transparent plates are also fixedly connected to the outer surface of the measuring conveyor belt. The outer surfaces of several transparent plates are respectively fixedly connected to the inner walls of several measuring limit frames. The material of each measuring limit frame and each transparent plate is the same as the material of the measuring conveyor belt. Two guide frames are fixedly connected to the upper surface of the measuring conveyor frame. Two guide rollers are rotatably connected inside each guide frame. The outer surfaces of each set of guide rollers and the upper surface of each guide frame are in contact with the inner wall of the measuring conveyor belt. A lower image acquisition device is fixedly connected to the inner wall of the measuring conveyor frame. An upper image acquisition device is positioned directly above the lower image acquisition device. Equally spaced circumferentially arranged lighting lamps are fixedly connected to the upper surface of the lower image acquisition device and the bottom surface of the upper image acquisition device.
[0009] Preferably, the bottom surface of the measuring conveyor is fixedly connected to two sets of support legs, and the bottom end of each set of support legs is fixedly connected to a support base.
[0010] Preferably, the measuring conveyor frame has a drive shaft and a driven shaft rotatably connected inside, and the outer surfaces of the drive shaft and the driven shaft are in contact with the inner wall of the measuring conveyor belt.
[0011] Preferably, a drive motor is provided on the front side of the measuring conveyor, and the output end of the drive motor is fixedly connected to the end of the drive shaft near the drive motor.
[0012] Preferably, a fixing ring is fixedly connected to the outer surface of the drive motor, and a connecting rod arranged in a circular pattern at equal intervals is fixedly connected to the back of the fixing ring. The end of each connecting rod away from the fixing ring is fixedly connected to the front of the measuring conveyor frame.
[0013] Preferably, both the front and back of the measuring conveyor are fixedly connected to an extension plate, and two mounting rods are fixedly connected to the upper surface of each extension plate.
[0014] Preferably, the top ends of the two sets of mounting rods are fixedly connected to an upper top frame, and the bottom surface of the upper top frame is fixedly connected to the upper surface of the upper image acquisition device.
[0015] Preferably, the bottom surface of the upper frame is fixedly connected to two reinforcing rods, and the bottom end of each reinforcing rod is fixedly connected to the upper surface of the measuring conveyor frame.
[0016] In summary, the technical effects and advantages of this utility model are as follows:
[0017] By coordinating a measuring conveyor frame, measuring conveyor belt, measuring limit frame, transparent plate, guide frame, and guide rollers, the rotating measuring conveyor belt within the measuring conveyor frame can move the measuring limit frame and transparent plate along the measuring conveyor frame. This allows for convenient manual placement of the injection-molded product onto the transparent plate within the measuring limit frame. The guide frame and guide rollers facilitate the movement of the measuring conveyor belt along them, lifting the injection-molded product to be measured without manual adjustment. Furthermore, the lower and upper image acquisition units, along with a lighting system, allow for vertical image acquisition of the injection-molded product on the transparent plate, enabling online measurement of the product's dimensions. The lighting system also enhances the image clarity of the lower and upper image acquisition units, reducing manual operation and improving the measurement efficiency of the device. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the measuring conveyor frame of this utility model;
[0019] Figure 2 This is a three-dimensional bottom view of the conveyor belt measuring device of this utility model;
[0020] Figure 3 This is a three-dimensional cross-sectional view of the measuring conveyor frame of this utility model, viewed from below.
[0021] Figure 4 This is a cross-sectional view of the three-dimensional measuring and limiting frame of this utility model.
[0022] In the diagram: 1. Measuring conveyor frame; 2. Measuring conveyor belt; 3. Measuring limit frame; 4. Transparent plate; 5. Guide frame; 6. Guide roller; 7. Lower image acquisition device; 8. Upper image acquisition device; 9. Lighting lamp; 10. Support leg; 11. Support chassis; 12. Drive shaft; 13. Driven shaft; 14. Connecting rod; 15. Fixing ring; 16. Drive motor; 17. Extension plate; 18. Mounting top rod; 19. Upper top frame; 20. Reinforcing rod. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Reference Figure 1-4An online measurement device for injection molded product dimensions includes a measurement conveyor frame 1. Two sets of support legs 10 are fixedly connected to the bottom surface of the measurement conveyor frame 1. Each set of support legs 10 is fixedly connected to a support base 11 at its bottom end. The two sets of support legs 10 and the support base 11 form a stable support structure, thereby enabling the online measurement device to be stably supported in the required position.
[0025] The measuring conveyor belt 2 is rotatably connected inside the measuring conveyor frame 1. The measuring conveyor frame 1 is rotatably connected to the drive shaft 12 and the driven shaft 13. The outer surfaces of the drive shaft 12 and the driven shaft 13 are in contact with the inner wall of the measuring conveyor belt 2. Through the cooperation of the drive shaft 12 and the driven shaft 13, the measuring conveyor belt 2 can be driven to rotate inside the measuring conveyor frame 1, thereby facilitating the conveying of injection molded products.
[0026] Measuring limit frames 3 are fixedly connected to the outer surface of the measuring conveyor belt 2 at equal intervals. Transparent plates 4 are also fixedly connected to the outer surface of the measuring conveyor belt 2 at equal intervals. The outer surfaces of several transparent plates 4 are fixedly connected to the inner walls of several measuring limit frames 3 respectively. The material of each measuring limit frame 3 and each transparent plate 4 is the same as the material of the measuring conveyor belt 2. A drive motor 16 is provided on the front side of the measuring conveyor frame 1. The output end of the drive motor 16 is fixedly connected to the end of the drive shaft 12 near the drive motor 16. Through the drive motor 16, it can be connected to one end of the drive shaft 12, thereby facilitating the drive shaft 12 to rotate inside the measuring conveyor frame 1, which further facilitates the conveying of injection molded products.
[0027] A fixing ring 15 is fixedly connected to the outer surface of the drive motor 16. A connecting rod 14 arranged in a circular pattern at equal intervals is fixedly connected to the back of the fixing ring 15. The end of each connecting rod 14 away from the fixing ring 15 is fixedly connected to the front of the measuring conveyor frame 1. By using multiple connecting rods 14, the fixing ring 15 can be installed on the outer surface of the drive motor 16, and the drive motor 16 can be stably connected to the measuring conveyor frame 1.
[0028] Two guide frames 5 are fixedly connected to the upper surface of the measuring conveyor frame 1. Two guide rollers 6 are rotatably connected inside each guide frame 5. The outer surface of each set of guide rollers 6 and the upper surface of each guide frame 5 are in contact with the inner wall of the measuring conveyor belt 2. Extension plates 17 are fixedly connected to both the front and back of the measuring conveyor frame 1. Two mounting rods 18 are fixedly connected to the upper surface of each extension plate 17. Through the extension plates 17 fixed on both sides of the measuring conveyor frame 1, the mounting rods 18 can be fixed to the upper surface of the extension plates 17, so that the two sets of mounting rods 18 can be conveniently used to support and install other structures.
[0029] A lower image acquisition device 7 is fixedly connected to the inner wall of the measuring conveyor 1. An upper image acquisition device 8 is located directly above the lower image acquisition device 7. The image acquisition device is a device that can convert optical image information into digital signals. The model of the image acquisition device is YHT12. Lighting lamps 9 are fixedly connected to the upper surface of the lower image acquisition device 7 and the bottom surface of the upper image acquisition device 8 in a circular arrangement at equal intervals. The lighting lamps 9 refer to the tools that can illuminate. The model of the lighting lamps 9 is LED-1234A. The top ends of the two sets of mounting rods 18 are fixedly connected to the upper top frame 19. The bottom surface of the upper top frame 19 is fixedly connected to the upper surface of the upper image acquisition device 8. Through the two sets of mounting rods 18, the upper top frame 19 can be fixed directly above the measuring conveyor belt 2, and the upper image acquisition device 8 can be stably installed directly above the lower image acquisition device 7.
[0030] Two reinforcing rods 20 are fixedly connected to the bottom surface of the upper frame 19. The bottom end of each reinforcing rod 20 is fixedly connected to the upper surface of the measuring conveyor frame 1. The two reinforcing rods 20 are used to connect the upper frame 19 to the upper surface of the measuring conveyor frame 1, thereby further improving the connection stability between the upper frame 19 and the upper image acquisition device 8.
[0031] The working principle of this utility model is as follows: When in use, the lower image acquisition device 7, the upper image acquisition device 8, the lighting lamp 9 and the drive motor 16 are first connected to the power supply. When it is necessary to use the online measuring device to measure the size of the injection molded product online, the online measuring device is first placed on a horizontal ground by hand. The support structure composed of two sets of support legs 10 and support base 11 can be used to stably support the online measuring device in the required position to measure the size of the injection molded product online.
[0032] Next, by manually controlling the drive motor 16 fixed by the connecting rod 14 and the fixing ring 15, the drive motor 16 can drive the drive shaft 12 to rotate inside the measuring conveyor frame 1. The cooperation between the drive shaft 12 and the driven shaft 13 can make the measuring conveyor belt 2 rotate inside the measuring conveyor frame 1. Thus, the measuring conveyor belt 2 can move the measuring limit frame 3 and the transparent plate 4. Two guide frames 5 are fixed on the upper surface of the measuring conveyor frame 1, so that the measuring conveyor belt 2 can move and transmit along the guide frames 5 and the guide rollers 6 rotating inside the guide frames 5. This can not only tension the measuring conveyor belt 2, but also move and lift the measuring limit frame 3 and the transparent plate 4 to a suitable height.
[0033] Then, the injection-molded products to be measured are manually placed on the transparent plate 4 inside the measuring limit frame 3 fixed on the measuring conveyor belt 2 at the input end. The measuring conveyor belt 2 is used to transport the injection-molded products in the measuring conveyor frame 1, which facilitates the sequential transport of the injection-molded products in the measuring limit frame 3 to the highest point. At this time, by controlling the power supply of the lower image acquisition device 7, the upper image acquisition device 8 and the lighting lamp 9, the lighting lamp 9 can illuminate the injection-molded products on the transparent plate 4 inside the measuring limit frame 3. The lower image acquisition device 7 fixed in the measuring conveyor frame 1 and the upper image acquisition device 8 fixed under the upper top frame 19 respectively acquire images of the bottom and surface of the injection-molded products. The acquired images are transmitted to the system of the online measuring device, which can collect, analyze and measure the image data, thereby judging whether the dimensions of the injection-molded products are standard. Then, it is only necessary to remove the non-standard injection-molded products after measurement at the end of the online measuring device, leaving the standard injection-molded products.
[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An online measurement device for the dimensions of injection molded products, comprising a measuring conveyor frame (1), characterized in that: The measuring conveyor frame (1) is internally rotatably connected to a measuring conveyor belt (2). The outer surface of the measuring conveyor belt (2) is fixedly connected to equally spaced measuring limit frames (3). The outer surface of the measuring conveyor belt (2) is also fixedly connected to equally spaced transparent plates (4). The outer surfaces of several transparent plates (4) are respectively fixedly connected to the inner walls of several measuring limit frames (3). The material of each measuring limit frame (3) and each transparent plate (4) is the same as the material of the measuring conveyor belt (2). The upper surface of the measuring conveyor frame (1) is fixedly... Two guide frames (5) are connected, and two guide rollers (6) are rotatably connected inside each guide frame (5). The outer surface of each set of guide rollers (6) and the upper surface of each guide frame (5) are in contact with the inner wall of the measuring conveyor belt (2). A lower image acquisition device (7) is fixedly connected to the inner wall of the measuring conveyor frame (1). An upper image acquisition device (8) is set directly above the lower image acquisition device (7). Lighting lamps (9) arranged in a circular pattern at equal intervals are fixedly connected to the upper surface of the lower image acquisition device (7) and the bottom surface of the upper image acquisition device (8).
2. The online measurement device for injection molded product dimensions according to claim 1, characterized in that: The bottom surface of the measuring conveyor (1) is fixedly connected to two sets of support legs (10), and the bottom end of each set of support legs (10) is fixedly connected to a support chassis (11).
3. The online measurement device for injection molded product dimensions according to claim 1, characterized in that: The measuring conveyor (1) is rotatably connected to a drive shaft (12) and a driven shaft (13), and the outer surfaces of the drive shaft (12) and the driven shaft (13) are in contact with the inner wall of the measuring conveyor belt (2).
4. The online dimension measurement device for injection molded products according to claim 3, characterized in that: The front of the measuring conveyor (1) is provided with a drive motor (16), and the output end of the drive motor (16) is fixedly connected to the end of the drive shaft (12) near the drive motor (16).
5. The online dimension measuring device for injection molded products according to claim 4, characterized in that: A fixing ring (15) is fixedly connected to the outer surface of the drive motor (16), and a connecting rod (14) arranged in a circular pattern at equal intervals is fixedly connected to the back of the fixing ring (15). The end of each connecting rod (14) away from the fixing ring (15) is fixedly connected to the front of the measuring conveyor frame (1).
6. The online measurement device for injection molded product dimensions according to claim 1, characterized in that: Both the front and back sides of the measuring conveyor (1) are fixedly connected to extension plates (17), and two mounting rods (18) are fixedly connected to the upper surface of each extension plate (17).
7. The online measurement device for injection molded product dimensions according to claim 6, characterized in that: The top ends of the two sets of mounting rods (18) are fixedly connected to an upper top frame (19), and the bottom surface of the upper top frame (19) is fixedly connected to the upper surface of the upper image acquisition device (8).
8. The online measurement device for injection molded product dimensions according to claim 7, characterized in that: The bottom surface of the upper frame (19) is fixedly connected to two reinforcing rods (20), and the bottom end of each reinforcing rod (20) is fixedly connected to the upper surface of the measuring conveyor frame (1).