Automobile injection molding part aperture detection tool
This automotive injection molding part hole diameter inspection fixture, which utilizes the coordinated action of hydraulic rods and locking components, solves the problem of large errors in traditional inspection methods, achieving high-precision and automated inspection, and improving inspection efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN ZHONGPINXIN ELECTRONICS CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional methods for detecting the bore diameter of automotive injection molded parts have large errors and are time-consuming, failing to meet high-precision requirements. Existing technologies lack automated, high-precision testing fixtures.
The inspection fixture employs a combination of hydraulic rods and locking components, along with the tilted placement of the converter and the internal locking rod and locking hole design, to achieve the conversion and position determination of calipers of different specifications, simplifying the operation process and improving inspection efficiency and accuracy.
Reduce human error, improve the stability and accuracy of scale conversion, ensure the reliability of each measurement result and the efficiency of testing, and provide continuous optimization of product quality.
Smart Images

Figure CN224136529U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of injection molded part inspection technology, and in particular relates to a tooling for inspecting the hole diameter of automotive injection molded parts. Background Technology
[0002] With the rapid development of the automotive industry, the precision requirements for the hole diameter of injection molded parts are increasing. Traditional inspection methods can no longer meet the high precision requirements, resulting in low production efficiency and difficulty in guaranteeing quality. In the existing technology, hole diameter inspection mostly relies on manual measurement, which has the disadvantages of large errors and long time consumption. There is an urgent need for an automated and high-precision inspection fixture to improve inspection efficiency and accuracy.
[0003] This invention further enhances the stability and accuracy of scale conversion through the synergistic effect of the hydraulic rod and the locking component, reduces human error, and makes each measurement result more reliable. The innovative design of the internal locking rod and locking hole, achieved by tilting the converter, enables the conversion of different caliper specifications and the determination of caliper positions. This not only simplifies the operation process but also significantly improves the testing efficiency, providing a strong guarantee for the continuous optimization of product quality. Utility Model Content
[0004] To achieve the above objectives, this utility model proposes a tooling for detecting the bore diameter of automotive injection molded parts, including a worktable, a fixing component, and a detection component. Both the fixing component and the detection component are disposed on the top of the worktable, and the detection component is located above the fixing component.
[0005] The workbench is equipped with a support plate on top, which is divided into two layers. The support plate is located directly above the fixing component. A hydraulic rod is fixedly connected to the bottom of the top layer of the support plate. The fixed end of the hydraulic rod is stuck at the top of the second layer of the support plate. The telescopic end of the hydraulic rod passes through the support plate. A converter is connected to the top of the telescopic end of the hydraulic rod. Multiple scales of different sizes are fixedly connected to the top of the converter.
[0006] In one example, a pressure sensor is provided at the top of the scale.
[0007] In one example, a reset spring is fixedly connected to the upper side of the converter, and the other end of the reset spring is fixedly connected to the bottom of the secondary layer of the support rod.
[0008] In one example, the workbench has a cabinet-like space inside.
[0009] In one example, the top of the workbench is flat, a placement plate is fixedly connected to the center of the top of the workbench, fixing plates are fixed to both sides of the placement plate, an electric push rod is fixedly connected to the inner side of the fixing plate, and a locking rod is fixedly connected to the top of the electric push rod.
[0010] In one example, the inner side of the locking lever is provided with an anti-slip pad.
[0011] In one example, the converter has a converter housing on the outside, and both the converter and its internal structure are placed at an angle. The converter housing is the lower part of an ellipsoid, and the interior of the converter housing is a cavity structure. A locking hole is provided inside the converter housing, and a scale is installed on the bottom surface of the converter housing at a vertical position of the locking hole. The protruding end of the hydraulic rod passes through the top of the converter housing, and a rotating wheel is provided at the top of the protruding end of the hydraulic rod. The rotating wheel is located inside the converter housing, and a locking component is fixedly connected to the outside of the rotating wheel.
[0012] In one example, the fixing rod of the locking component is fixed to the surface of the rotating wheel. The fixing rod has a hollow structure and a spring is sleeved inside the fixing rod. One end of the spring is fixed to the surface of the rotating wheel, and the other end of the spring is fixed to the bottom of the extension rod. The length of the spring is greater than the length of the fixing rod. A connecting tube is sleeved on the outside of the connection between the extension rod and the fixing rod, and the connecting tube is fixedly connected to the fixing rod.
[0013] The tooling for detecting the bore diameter of automotive injection molded parts proposed in this utility model can bring the following beneficial effects:
[0014] 1. This utility model further improves the stability and accuracy of scale conversion through the synergistic effect of the hydraulic rod and the locking component, reduces human operation error, and makes the measurement results more reliable each time.
[0015] 2. This utility model, through the innovative design of the tilted placement of the converter and the internal locking rod and locking hole, realizes the conversion of calipers of different specifications and the determination of caliper positions. It not only simplifies the operation process, but also greatly improves the testing efficiency, providing a strong guarantee for the continuous optimization of product quality. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of a tooling for detecting the bore diameter of automotive injection molded parts according to the present invention.
[0018] Figure 2 This is a schematic diagram of the fixing component and the detection component of a tooling for detecting the hole diameter of automotive injection molded parts according to the present invention.
[0019] Figure 3 This is a schematic diagram of the fixed component and the movable part of the detection component of a tooling for detecting the hole diameter of automotive injection molded parts according to the present invention.
[0020] Figure 4 This is a schematic diagram of the internal structure of a tooling converter and connector for detecting the bore diameter of automotive injection molded parts, excluding the internal structure.
[0021] Figure 5 This is a schematic diagram of the clamping component structure of a tooling for detecting the hole diameter of automotive injection molded parts according to this utility model.
[0022] Attached chart ruler
[0023] 1. Workbench; 2. Placement plate; 3. Electric push rod; 4. Workpiece; 5. Hydraulic rod; 6. Support plate; 7. Return spring; 8. Converter; 9. Scale; 10. Converter housing; 11. Rotating wheel; 12. Locking rod; 13. Fixing rod; 14. Spring; 15. Extension rod; 16. Connecting pipe. Detailed Implementation
[0024] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.
[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 element 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.
[0026] 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.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.
[0029] like Figures 1-5 As shown, this utility model includes a workbench 1, a fixing component, and a detection component. The fixing component and the detection component are both set on the top of the workbench 1, and the detection component is located above the fixing component. The workpiece 4 to be inspected is placed on the workbench 1 and fixed stably by the fixing component. The detection component completes the inspection by comparing the aperture of the workpiece 4 with the aperture of the aperture scale 9.
[0030] Specifically, the workbench 1 has a cabinet-like space inside for storing tools and accessories. The top of the workbench 1 is flat to support the workpiece 4 and the testing components. A placement plate 2 is fixedly connected to the middle of the top of the workbench 1. Fixed plates are fixed on both sides of the placement plate 2. An electric push rod 3 is fixedly connected to the inner side of the fixed plate. A locking rod 12 is fixedly connected to the top of the electric push rod 3. The locking rods 12 on both sides can extend and retract with the electric push rod 3 to adjust their relative positions to accommodate different sizes of workpieces 4 to be tested. The contact surface between the locking rod 12 and the workpiece 4 is provided with an anti-slip pad to keep the workpiece 4 between the locking rods 12 stable. Before the test begins, the workpiece 4 to be tested is placed on the placement plate 2. The electric push rod 3 extends and retracts to adjust the locking rod 12 to fix the workpiece 4 tightly, ensuring that the workpiece 4 can be stably fixed in a fixed position during the subsequent test, thus improving the accuracy of the test.
[0031] The workbench 1 is topped with a support plate 6, which consists of two layers. The support plate 6 is located directly above the fixing assembly. A hydraulic rod 5 is fixedly connected to the bottom of the top layer of the support plate 6. The fixed end of the hydraulic rod 5 is clipped onto the top of the second layer of the support plate 6. The telescopic end of the hydraulic rod 5 passes through the support plate 6. A converter 8 is connected to the top of the telescopic end of the hydraulic rod 5. A return spring 7 is fixedly connected to the upper side of the converter 8. The other end of the return spring 7 is fixedly connected to the bottom of the second layer of the support rod. Multiple scales 9 of different sizes are fixedly connected to the top of the converter 8. After the workpiece 4 is fixed, the converter 8 is rotated to adjust the required scale 9 to the lowest position, aligning it with the diameter of the workpiece 4. The hydraulic rod 5 is extended and retracted to adjust the height of the scale 9, lowering the scale 9 to the height of the workpiece 4 to be measured, ensuring that the scale 9 is precisely aligned with the diameter of the workpiece 4. The top of the scale 9 is equipped with a pressure sensor. When the scale 9 contacts the workpiece 4 hole, the pressure sensing device triggers a signal. When the hole diameter matches the scale 9 exactly, the pressure on the top of the scale 9 is different from the pressure when the hole diameter is too large or too small. The pressure value is set according to the pressure gauge of the standard part. The quality of the workpiece 4 hole diameter is determined by comparing the pressure values. The system automatically records the test results based on the data fed back by the pressure sensing device and displays the specific value of the hole diameter and the qualified status on the display screen, which is convenient for operators to make quick judgments. The hydraulic rod 5 has high extension and retraction accuracy, ensuring that the extension length of the hydraulic rod 5 is consistent in a batch of tests, avoiding measurement errors caused by length differences, thereby improving the overall testing efficiency and ensuring stable and reliable product quality. The return spring 7 of the hydraulic rod 5 is designed to ensure that the scale 9 can return to its original position after each test, avoiding collision with the support plate 6.
[0032] The converter 8 is surrounded by a converter housing 10. Both the converter 8 and its internal structure are placed at an angle. The converter housing 10 is the lower part of an ellipsoid with a hollow internal structure. A locking hole is provided inside the converter housing 10, and a scale 9 is mounted on the bottom surface of the converter housing 10 with the locking hole vertically positioned. The extended end of the hydraulic rod 5 passes through the top of the converter housing 10. A rotating wheel 11 is located at the top of the extended end of the hydraulic rod 5, inside the converter housing 10. A locking component is fixedly connected to the outside of the rotating wheel 11. A fixing rod 13 of the locking component is fixed to the surface of the rotating wheel 11. The fixing rod 13 has a hollow structure and a spring 14 is sleeved inside. One end of the spring 14 is fixed to the surface of the rotating wheel 11, and the other end is fixed... The spring 14 is longer than the fixed rod 13 and is fixed at the bottom of the extension rod 15. A connecting tube 16 is sleeved on the outside of the connection between the extension rod 15 and the fixed rod 13. The connecting tube 16 is fixedly connected to the fixed rod 13. When inside the converter housing 10, the locking rod 12 is in a retracted state. When the converter 8 is rotated, the relative position of the locking component changes and enters the locking hole. The locking rod 12 extends and collides with the converter housing 10, making a clicking sound. This indicates that the caliper has moved to the relative position. The cooperation between the locking rod 12 and the locking hole enables the caliper to move accurately. If the corresponding position is not the required scale 9, it is only necessary to rotate it forcefully to adjust it to the appropriate scale 9 to ensure that the scale 9 is aligned with the hole diameter of the workpiece 4.
[0033] This invention, through the synergistic effect of the hydraulic rod 5 and the locking component, further improves the stability and accuracy of the scale 9 conversion, reduces human error, and makes each measurement result more reliable. By tilting the converter 8 and the innovative design of the internal locking rod 12 and locking hole, the conversion of different specifications of calipers and the determination of caliper positions are realized. This not only simplifies the operation process but also greatly improves the testing efficiency, providing a strong guarantee for the continuous optimization of product quality.
[0034] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0035] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. An automobile injection molding part hole diameter detection tool, comprising a workbench (1), a fixing assembly, a detection assembly, characterized in that, Both the fixing component and the detection component are set on the top of the workbench (1), with the detection component located above the fixing component; The workbench (1) is provided with a support plate (6) on top. The support plate (6) is divided into two layers. The support plate (6) is located directly above the fixing component. A hydraulic rod (5) is fixedly connected to the bottom of the top layer of the support plate (6). The fixed end of the hydraulic rod (5) is stuck at the top of the second layer of the support plate (6). The telescopic end of the hydraulic rod (5) passes through the support plate (6). A converter (8) is connected to the top of the telescopic end of the hydraulic rod (5). Multiple scales (9) of different sizes are fixedly connected to the top of the converter (8).
2. The automobile injection molding part hole diameter detection tool according to claim 1, characterized in that, A pressure sensing device is provided on the top of the scale (9).
3. The automobile injection molding part hole diameter detection tool of claim 1, wherein, A reset spring (14)(7) is fixedly connected to the upper side of the converter (8), and the other end of the reset spring (14)(7) is fixedly connected to the bottom of the secondary layer of the support rod.
4. The automobile injection molding part hole diameter detection tool of claim 1, wherein, The workbench (1) has a cabinet-like space inside.
5. The automobile injection molding part hole diameter detection tool of claim 1, wherein, The top of the workbench (1) is flat, and a placement plate (2) is fixedly connected to the middle of the top of the workbench (1). Fixing plates are fixed on both sides of the placement plate (2). An electric push rod (3) is fixedly connected to the inner side of the fixing plate. A locking rod (12) is fixedly connected to the top of the electric push rod (3).
6. The hole diameter detection tool for an injection molded part of an automobile according to claim 5, wherein The inner side of the locking rod (12) is provided with an anti-slip pad.
7. The automobile injection molding part hole diameter detection tool of claim 1, wherein, The converter (8) has a converter housing (10) on its outside. The converter (8) and its internal structure are both placed at an angle. The converter housing (10) is the lower part of an ellipsoid. The converter housing (10) has a hollow structure inside. The converter housing (10) has a locking hole inside. A scale (9) is installed on the bottom surface of the converter housing (10) with the locking hole at a vertical position. The protruding end of the hydraulic rod (5) passes through the top of the converter housing (10). A rotating wheel (11) is provided at the top of the protruding end of the hydraulic rod (5). The rotating wheel (11) is located inside the converter housing (10). A locking component is fixedly connected to the outside of the rotating wheel (11).
8. The automobile injection molding part hole diameter detection tooling according to claim 7, characterized in that, The fixing rod (13) of the locking component is fixed on the surface of the rotating wheel (11). The fixing rod (13) has a hollow structure. A spring (14) is sleeved inside the fixing rod (13). One end of the spring (14) is fixed on the surface of the rotating wheel (11), and the other end of the spring (14) is fixed on the bottom of the extension rod (15). The length of the spring (14) is greater than the length of the fixing rod (13). A connecting tube (16) is sleeved on the outside of the connection between the extension rod (15) and the fixing rod (13). The connecting tube (16) is fixedly connected to the fixing rod (13).