A non-contact measuring and positioning fixture for mold core outer diameter

Abstract

This utility model discloses a non-contact measuring and positioning fixture for mold core outer diameter. It relates to the field of mold core outer diameter measurement technology and includes a protective component. The protective component includes a base, a fixing component at the top center of the base, a protective cabinet fixedly installed on the top of the base, a measuring door hinged to one side of the protective cabinet, a top plate fixedly installed on the top of the protective cabinet, and a measuring component fixedly installed at the bottom center of the top plate. The fixing component includes an electric turntable, with a four-jaw chuck at the output end of the electric turntable. The measuring component includes a guide rail, a sliding block inside the guide rail, and an infrared ranging sensor fixedly installed at the bottom of the sliding block. This utility model enables non-contact measurement of the mold core outer diameter and shape with high accuracy, and has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of mold core outer diameter measurement technology, specifically a non-contact measurement and positioning fixture for mold core outer diameter. Background Technology

[0002] Mold core outer diameter measurement refers to the process of accurately measuring the outer diameter of the core component (mold core) in a mold. The mold core is a critical component used to shape the product during manufacturing, and its accuracy directly affects the quality of the final product. Therefore, ensuring that the outer diameter of the mold core meets design requirements is crucial. Measurements are typically performed during production, maintenance, or quality control phases to ensure that the dimensional tolerances of the mold core are within specified limits. Mold core quality control is critical for lens development and production because contact lens materials are thin and soft, and their shape is entirely determined by the mold core.

[0003] Based on the above, the inventors have discovered the following problems: the current mold core shape detection is mainly carried out by contact-type manual spiral micrometer, which is prone to human error during the measurement process, which can easily affect the shape accuracy and quality of the mold core and is inconvenient to use.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a non-contact measurement and positioning fixture for the outer diameter of the mold core, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide a non-contact measuring and positioning fixture for the outer diameter of a mold core, so as to solve the problems mentioned in the background art.

[0006] A non-contact measuring and positioning fixture for mold core outer diameter includes a protective component. The protective component includes a base, a fixing component at the top center of the base, a protective cabinet fixedly installed on the top of the base, a measuring door hinged to one side of the protective cabinet, a top plate fixedly installed on the top of the protective cabinet, and a measuring component fixedly installed at the bottom center of the top plate. The fixing component includes an electric turntable, a four-jaw chuck at the output end of the electric turntable, and a guide rail with a sliding block inside the guide rail. An infrared ranging sensor is fixedly installed at the bottom of the sliding block.

[0007] By adopting the above technical solution, the protective components provide overall support, protection, and operating space; the base provides support for the installation of the fixing components; the fixing components facilitate the fixation of the mold core, enabling non-contact measurement of its shape and outer diameter; the protective cabinet provides a safe and enclosed operating environment, preventing external dust and light interference from affecting measurement accuracy; the measuring door allows operators to easily insert and remove the mold core and replace the sample to be tested; and the top plate provides a mounting base for the measuring components, facilitating mold... Non-contact measurement of the mold core is achieved through an electric turntable that facilitates the control of the four-jaw chuck. The four-jaw chuck allows for easy clamping and fixing of the mold core sample. The rotation of the four-jaw chuck drives the sample to rotate, enabling full-circumference scanning measurement. The guide rail and sliding block facilitate the guidance and limitation of the movement of the infrared ranging sensor, allowing the infrared ranging sensor to move on top of the mold core for accurate shape measurement. The infrared ranging sensor also facilitates the emission of infrared light and the reception of reflected signals, enabling non-contact measurement of the mold core's outer diameter based on triangulation or time-of-flight methods.

[0008] Furthermore, a positioning groove is provided at the center of the top of the four-jaw chuck, and the positioning groove has a stepped structure. By adopting the above technical solution, the positioning groove facilitates the rapid positioning of the mold core and makes it easy to fix the mold core in the center of the top of the four-jaw chuck.

[0009] Furthermore, the electric turntable is equipped with a first encoder, which is used to detect the rotation angle and position of the four-jaw chuck.

[0010] By adopting the above technical solution and setting the first encoder, it is convenient to detect the rotation angle and position of the electric turntable in real time, and to facilitate the precise control of the four-jaw chuck rotation by the electric turntable, so that the rotation of the mold core sample can be easily scanned and measured around the entire circumference.

[0011] Furthermore, guide grooves are provided on both sides of the sliding block, and the guide grooves are slidably connected to the guide rail. By adopting the above technical solution, the guide grooves facilitate more stable and accurate sliding of the sliding block.

[0012] Furthermore, a threaded rod is rotatably connected to the inner side of the guide rail, and the threaded rod passes through the sliding block. By adopting the above technical solution, the threaded rod facilitates linear movement of the sliding block by rotating the threaded rod.

[0013] Furthermore, a threaded sleeve is fixedly installed in the middle of the sliding block, and the threaded sleeve is threadedly connected to the threaded rod. By adopting the above technical solution, the threaded sleeve facilitates the rotation of the threaded rod to drive the sliding block to move accurately and linearly.

[0014] Furthermore, a drive motor is provided at one end of the guide rail, the drive motor is fixedly connected to the top plate, and a worm gear is fixedly installed at the output end of the drive motor.

[0015] By adopting the above technical solution and by setting the drive motor, it is easy for the drive motor to work and drive the worm gear to rotate.

[0016] Furthermore, the worm gear is engaged with a worm wheel, which is fixedly connected to one end of the threaded rod.

[0017] By adopting the above technical solution, the worm gear is designed to facilitate the rotation of the worm, which in turn drives the threaded rod to rotate, thereby controlling the sliding block.

[0018] Furthermore, a second encoder is provided at the end of the guide rail away from the drive motor. The second encoder is used to detect the rotation angle and position of the threaded rod.

[0019] By adopting the above technical solution and setting the second encoder, it is convenient to detect the rotation angle and position of the threaded rod in real time, thereby improving the repeatability of the sliding block movement and facilitating the external computer to perform precise non-contact measurement of the outer diameter and shape of the mold core by combining the data of the first encoder, the second encoder and the infrared ranging sensor.

[0020] Compared with existing technologies, the beneficial effects of this utility model are as follows: The protective components facilitate overall support, protection, and operating space; the base provides support for the installation of the fixing components; the fixing components facilitate the fixation of the mold core, enabling non-contact measurement of its shape and outer diameter; the protective cabinet provides a safe and enclosed operating environment, preventing external dust and light interference from affecting measurement accuracy; the measuring door allows operators to easily insert and remove the mold core and replace the sample to be tested; the top plate provides a mounting base for the measuring components, facilitating non-contact measurement of the mold core; and the electric turntable... The design facilitates control of the four-jaw chuck's rotation, allowing for easy clamping and fixing of the mold core sample. The rotation of the chuck drives the sample's rotation, enabling full-circumference scanning measurement. The guide rail and sliding block facilitate the guidance and limitation of the infrared ranging sensor's movement, allowing it to move easily on top of the mold core for precise shape measurement. The infrared ranging sensor also facilitates the emission of infrared light and the reception of reflected signals, enabling non-contact measurement of the mold core's outer diameter based on triangulation or time-of-flight methods. This invention provides non-contact measurement of the mold core's outer diameter and shape with high accuracy, possessing significant practical value. Attached Figure Description

[0021] Figure 1This is a three-dimensional structural diagram of a non-contact measuring and positioning fixture for the outer diameter of a mold core according to the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the fixing component of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the measuring component of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the sliding block of this utility model;

[0025] Figure 5 Provided by this utility model Figure 3 Enlarged view of structure A in the middle.

[0026] In the diagram: 1. Protective component; 11. Base; 12. Protective cabinet; 13. Top plate; 14. Measuring door; 2. Fixing component; 21. Electric turntable; 22. Four-jaw chuck; 23. Positioning slot; 3. Measuring component; 31. Guide rail; 32. Infrared ranging sensor; 33. Sliding block; 34. Guide slot; 35. Threaded sleeve; 36. Threaded rod; 37. Drive motor; 38. Worm gear; 39. Worm wheel. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5This utility model provides a technical solution: a non-contact measuring and positioning fixture for mold core outer diameter, including a protective component 1. The protective component 1 provides overall support, protection, and operating space. The protective component 1 includes a base 11, which provides support for the installation of a fixing component 2. The fixing component 2 is located at the top center of the base 11, which facilitates the fixing of the mold core and enables non-contact measurement of its shape and outer diameter. A protective cabinet 12 is fixedly installed on the top of the base 11, providing a safe and enclosed operating environment to prevent external dust and light interference from affecting measurement accuracy. A measuring door 14 is hinged to one side of the protective cabinet 12, allowing operators to easily insert and remove the mold core and replace the sample to be measured. A top plate 13 is fixedly installed on the top of the protective cabinet 12, providing a mounting base for the measuring component 3 and facilitating the installation of the mold core. For non-contact measurement, a measuring component 3 is fixedly installed at the bottom center of the top plate 13. The fixed component 2 includes an electric turntable 21, which facilitates the control of the rotation of the four-jaw chuck 22. The output end of the electric turntable 21 is equipped with the four-jaw chuck 22, which facilitates the clamping and fixing of the mold core sample. The rotation of the four-jaw chuck 22 drives the sample to rotate, realizing full-circumference scanning measurement. The measuring component 3 includes a guide rail 31, and a sliding block 33 is provided inside the guide rail 31. The guide rail 31 and the sliding block 33 facilitate the guidance and limitation of the movement of the infrared ranging sensor 32, which facilitates the movement of the infrared ranging sensor 32 on the top of the mold core, and facilitates the accurate measurement of the shape of the mold core. The infrared ranging sensor 32 is fixedly installed at the bottom of the sliding block 33. The infrared ranging sensor 32 facilitates the emission of infrared light and the reception of reflected signals, and performs non-contact measurement of the outer diameter of the mold core based on the triangulation method or the time-of-flight method.

[0029] The four-jaw chuck 22 has a positioning groove 23 at the top center. The positioning groove 23 has a stepped structure. The positioning groove 23 facilitates the quick positioning of the mold core and makes it easy to fix the mold core in the top center of the four-jaw chuck 22.

[0030] The electric turntable 21 is equipped with a first encoder, which is used to detect the rotation angle and position of the four-jaw chuck 22. By setting the first encoder, it is easy to detect the rotation angle and position of the electric turntable 21 in real time, so that the electric turntable 21 can accurately control the rotation of the four-jaw chuck 22, thereby making it convenient to perform full-circumference scanning measurement of the mold core sample.

[0031] The sliding block 33 has guide grooves 34 on both sides, and the guide grooves 34 are slidably connected to the guide rail 31. The guide grooves 34 make the sliding block 33 slide more stably and accurately.

[0032] The guide rail 31 is rotatably connected to a threaded rod 36, which passes through the sliding block 33. The threaded rod 36 facilitates linear movement of the sliding block 33 by rotating the threaded rod 36.

[0033] Among them, a threaded sleeve 35 is fixedly installed in the middle of the sliding block 33. The threaded sleeve 35 is threadedly connected to the threaded rod 36. The setting of the threaded sleeve 35 facilitates the rotation of the threaded rod 36 to drive the sliding block 33 to move accurately in a linear manner.

[0034] The guide rail 31 is equipped with a drive motor 37 at one end. The drive motor 37 is fixedly connected to the top plate 13. A worm gear 38 is fixedly installed at the output end of the drive motor 37. The drive motor 37 facilitates the operation of the drive motor 37 to drive the worm gear 38 to rotate.

[0035] The worm 38 is meshed with a worm wheel 39, which is fixedly connected to one end of the threaded rod 36. The worm wheel 39 facilitates the rotation of the worm 38, which in turn drives the threaded rod 36 to rotate, thereby controlling the sliding block 33 to slide.

[0036] The guide rail 31 is equipped with a second encoder at the end away from the drive motor 37. The second encoder is used to detect the rotation angle and position of the threaded rod 36. By setting the second encoder, it is convenient to detect the rotation angle and position of the threaded rod 36 in real time, thereby improving the repeatability of the sliding block 33. It is also convenient for an external computer to combine the data of the first encoder, the second encoder and the infrared ranging sensor 32 to perform accurate non-contact measurement of the outer diameter and shape of the mold core.

[0037] Specifically, the working principle of this non-contact measurement and positioning fixture for mold core outer diameter is as follows: During use, the protective cabinet 12 provides a safe and enclosed operating environment, preventing external dust and light interference from affecting measurement accuracy. The measuring door 14 facilitates the insertion and removal of the mold core and replacement of the sample to be measured. The top plate 13 provides an installation base for the measuring assembly 3, facilitating non-contact measurement of the mold core. The electric turntable 21 controls the rotation of the four-jaw chuck 22. The positioning groove 23 facilitates rapid positioning of the mold core, allowing it to be fixedly installed at the top center of the four-jaw chuck 22. The four-jaw chuck 22 clamps and fixes the mold core sample. The rotation of the four-jaw chuck 22 drives the sample to rotate, achieving full-circumference scanning measurement. The first encoder allows for real-time detection of the rotation angle and position of the electric turntable 21, enabling precise control of the four-jaw chuck 22's rotation and facilitating full-circumference scanning measurement of the mold core sample. The guide groove 34 facilitates more stable and accurate sliding of the sliding block 33. The drive motor 37 drives the worm gear 38 to rotate. The worm wheel 39 drives the threaded rod 36 to rotate, thus controlling the sliding block 33. The guide rail 31 and the sliding block 33 guide and limit the movement of the infrared ranging sensor 32, allowing it to move on top of the mold core for accurate shape measurement. The infrared ranging sensor 32 emits infrared light and receives reflected signals, enabling non-contact measurement of the mold core's outer diameter based on triangulation or time-of-flight methods. The second encoder allows for real-time detection of the rotation angle and position of the threaded rod 36, improving the repeatability of the sliding block 33. An external computer can then combine data from the first encoder, second encoder, and infrared ranging sensor 32 to perform precise non-contact measurement of the mold core's outer diameter and shape.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A core outer diameter non-contact measurement positioning jig, characterized by, The system includes a protective component (1), which includes a base (11). A fixing component (2) is provided at the top center of the base (11). A protective cabinet (12) is fixedly installed on the top of the base (11). A measuring door (14) is hinged to one side of the protective cabinet (12). A top plate (13) is fixedly installed on the top of the protective cabinet (12). A measuring component (3) is fixedly installed at the bottom center of the top plate (13). The fixing component (2) includes an electric turntable (21). A four-jaw chuck (22) is provided at the output end of the electric turntable (21). The measuring component (3) includes a guide rail (31). A sliding block (33) is provided inside the guide rail (31). An infrared ranging sensor (32) is fixedly installed at the bottom of the sliding block (33).

2. The non-contacting outer diameter measurement positioning fixture for a die core according to claim 1, wherein, The four-jaw chuck (22) has a positioning groove (23) at the top center, and the positioning groove (23) has a stepped structure.

3. The non-contacting outer diameter measurement positioning fixture for a die core according to claim 2, wherein, The electric turntable (21) is equipped with a first encoder, which is used to detect the rotation angle and position of the four-jaw chuck (22).

4. The non-contacting outer diameter measurement positioning fixture for a die core of claim 1, wherein, The sliding block (33) has guide grooves (34) on both sides, and the guide grooves (34) are slidably connected to the guide rail (31).

5. The non-contact outer diameter measurement positioning fixture for a die core according to claim 4, wherein, The guide rail (31) is rotatably connected to a threaded rod (36), which passes through a sliding block (33).

6. The non-contact outer diameter measurement positioning fixture for a die core according to claim 5, wherein, A threaded sleeve (35) is fixedly installed in the middle of the sliding block (33), and the threaded sleeve (35) is threadedly connected to the threaded rod (36).

7. The non-contact outer diameter measurement positioning fixture for a die core according to claim 6, wherein, One end of the guide rail (31) is provided with a drive motor (37), the drive motor (37) is fixedly connected to the top plate (13), and a worm gear (38) is fixedly installed at the output end of the drive motor (37).

8. The non-contact outer diameter measurement positioning fixture for a die core according to claim 7, wherein, The worm (38) is meshed with a worm wheel (39), and the worm wheel (39) is fixedly connected to one end of the threaded rod (36).

9. The non-contact outer diameter measurement positioning fixture for a die core according to claim 8, wherein, The guide rail (31) is provided with a second encoder at the end away from the drive motor (37). The second encoder is used to detect the rotation angle and position of the threaded rod (36).

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