Automatic detection device for large quantities of elastic elements

Abstract

The application provides a large-batch elastic element automatic detection device, which comprises a lead screw, the top of the lead screw is fixedly connected to a motor, the bottom of the lead screw is movably connected to the bottom plate of a base, the middle part of the lead screw is sleeved with a lead screw nut, the lead screw nut is fixedly connected to an insulating plate, the circuit board and a plurality of elastic contact points are fixedly installed above the insulating plate, so that the rotation of the lead screw drives the circuit board, the insulating plate and the plurality of elastic contact points to move up and down, the end of each elastic contact point is in electrical communication with the circuit board, a grating ruler assembly is installed on one side of the insulating plate, the grating ruler assembly is used for collecting displacement data of the insulating plate, an elastic contact point mounting plate is arranged above the bottom plate and is used for fixing the elastic contact points, and the motor and the circuit board are both used for circuit connection to an external computer. The large-batch elastic element automatic detection device provided by the application guarantees the consistency and accuracy of the detection reference before and after 72 hours of compression, saves the detection cost and greatly improves the detection efficiency.

Description

Technical Field

[0001] This invention belongs to the field of mechanical product testing, and in particular relates to a test for controlling the change in the amount of elastic elements before and after a spatial compression test of the same size. Background Technology

[0002] The production requirements for spring clips stipulate that the dimensional change should be less than 0.2 after a 72-hour load test, which means the dimensional inspection accuracy should be less than 0.05. Existing inspection methods are divided into two types: 1. Using an image measuring instrument. This instrument uses an optical microscope to perform high-magnification optical imaging of the object. The magnified image is then input into a computer via a CCD camera system. Internal length calculations are used to detect the contour, surface shape, size, angle, and position of various complex workpieces. However, for large-scale inspections, each piece needs to be analyzed individually, which is very time-consuming and inefficient. 2. Using an elastic element detection device. This method uses light transmission to confirm contact, ensuring the product's measurement state remains unchanged to the greatest extent possible. However, after a 72-hour load test, errors from re-clamping and manual measurement are difficult to control, and the measurement accuracy cannot meet practical requirements. Summary of the Invention

[0003] In view of this, the present invention aims to provide an automated testing device for large-volume elastic elements, in order to solve the problems of inaccurate size detection due to contact measurement and difficulty in controlling the size change after 72 hours of compression when testing elastic elements in large quantities.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] An automated testing device for mass production of elastic elements includes a lead screw, a circuit board, an insulating plate, a spring contact mounting plate, a base, and spring contact points. A motor is fixedly connected to the top of the lead screw, and the bottom of the lead screw is movably connected to the base plate. A lead screw nut is fitted into the middle of the lead screw, and the lead screw nut is fixedly connected to the insulating plate. A circuit board and several spring contact points are fixedly mounted on the top of the insulating plate, allowing the lead screw to rotate and drive the circuit board, the insulating plate, and the spring contact points to move up and down. The end of each spring contact point is electrically connected to the circuit board. A grating ruler assembly is mounted on one side of the insulating plate to collect displacement data of the insulating plate. A spring contact mounting plate is located on the top of the base plate to fix the springs. The motor and circuit board are used for wiring connections to an external computer.

[0006] Furthermore, the grating ruler assembly includes a grating ruler and a grating ruler probe. The grating ruler probe is installed on one side of the insulating plate, and the grating ruler is installed on one side of the base, so that when the insulating plate moves up and down, it drives the grating ruler probe to cooperate with the grating ruler to collect the displacement data of the insulating plate.

[0007] Furthermore, a grating bracket is installed on one side of the insulating plate, and a grating ruler probe is installed at one end of the grating bracket. The grating bracket is used to fix the grating probe on the movable insulating plate and is parallel to the grating ruler.

[0008] Furthermore, the spring contact is a cylindrical structure, with one end in contact with the spring being a circular plane and the edges being rounded, and the other end being threaded and fixed to an insulating plate, with each tail connected to the circuit board circuit.

[0009] Furthermore, the base includes an integral top plate, a connecting plate, and a bottom plate, with a U-shaped groove structure in cross-section. Both the top plate and the bottom plate are rectangular plates, and the bottom plate is provided with bearing mounting holes.

[0010] Furthermore, a top cover plate is fixedly installed above the insulating plate, and the top cover plate is located above the circuit board. The top cover plate is a thin-walled shell.

[0011] Furthermore, a guide rod is installed at each of the four corners of the base plate, and the other end of each guide rod is movably sleeved inside the insulating plate.

[0012] Furthermore, the spring mounting plate has a threaded interface that matches the spring, and the spring mounting plate is evenly distributed with several mounting slots. Both the threaded interface and the mounting slots are used to install the spring.

[0013] Compared with existing technologies, the automated testing device for mass production of elastic elements described in this invention has the following advantages:

[0014] (1) The automated testing device for large-volume elastic elements described in this invention can test more than 40 pieces at a time when testing large-volume spring sheets, and the testing time is shortened by more than 20 times. Only the spring sheet mounting plate and the installed spring sheets need to be replaced to quickly carry out the testing. When the spring sheets are pressed together, they do not need to be removed from the spring sheet mounting plate. They can be pressed together for 72 hours directly with the spring sheet mounting plate, which ensures the consistency and accuracy of the testing benchmark before and after 72 hours of pressing, saves testing costs, and greatly improves testing efficiency.

[0015] (2) The automated testing device for mass elastic elements described in this invention is easy to install and remove, safe and reliable; it uses common materials that can be reused, has a wide processing range, long service life and high testing accuracy. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the automated testing device for mass production of elastic elements according to an embodiment of the present invention;

[0018] Figure 2 This is a side view of the automated testing device for mass production of elastic elements according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the automated testing device for mass production of elastic elements according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the spring-loaded mounting plate according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the base described in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Motor; 2-Coupling; 3-Lead screw; 4-Lead screw nut; 5-Upper cover plate; 6-Circuit board; 7-Insulating plate; 8-Grammature ruler; 9-Grammature ruler probe; 10-Grammature bracket; 11-Spring; 12-Spring mounting plate; 121-Mounting slot; 122-Threaded interface; 13-Lead screw bearing; 14-Base; 141-Top plate; 142-Connecting plate; 143-Bottom plate; 15-Guide rod; 16-Spring contact. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Automated testing equipment for mass production of elastic components, such as Figures 1 to 5 As shown, the system includes a motor 1, coupling 2, lead screw 3, lead screw nut 4, upper cover plate 5, circuit board 6, insulating plate 7, grating ruler 8, grating ruler probe 9, grating bracket 10, spring plate mounting plate 12, lead screw bearing 13, base 14, guide rod 15, and spring contact 16. The upper part of the lead screw 3 is fixedly connected to the motor 1, and the motor 1 is mounted on the top plate 141 of the base 14. The bottom of the lead screw 3 is movably connected to the bottom plate 143 of the base 14. The lead screw nut 4 is sleeved in the middle of the lead screw 3, and the lead screw nut 4 is fixedly connected to the insulating plate 16. The circuit board 6 and several spring contacts 16 are fixedly installed on the top of the insulating plate 7, so that the lead screw 3 rotates to drive the circuit board 6, the insulating plate 7 and the spring contacts 16 to move up and down. The end of each spring contact 16 is electrically connected to the circuit board 6. A grating ruler assembly is installed on one side of the insulating plate 7. The grating ruler assembly is used to collect the displacement data of the insulating plate 7. A spring mounting plate 12 is provided on the top of the base plate 143. The spring mounting plate 12 is used to fix the spring 11. The motor 1 and the circuit board 6 are used to connect the circuit to an external computer.

[0029] The automated testing device for large-volume elastic elements can test more than 40 pieces at a time, reducing the testing time by more than 20 times. It only requires replacing the spring plate 12 and the installed spring 11 to quickly perform the test. When pressing the springs together, it is not necessary to remove them from the spring plate 12. The spring plate 12 can be directly pressed together for 72 hours, ensuring the consistency and accuracy of the test benchmark before and after 72 hours of pressing, saving testing costs and greatly improving testing efficiency.

[0030] Preferably, the grating ruler assembly includes a grating ruler 8 and a grating ruler probe 9. The grating ruler probe 9 is installed on one side of the insulating plate 7, and the grating ruler 8 is installed on one side of the base 14, so that when the insulating plate 7 moves up and down, the grating ruler probe 9 will cooperate with the grating ruler 8 to collect the displacement data of the insulating plate 7.

[0031] Furthermore, a grating bracket 10 is installed on one side of the insulating plate 7, and a grating ruler probe 9 is installed on one end of the grating bracket 10. The grating bracket 10 is used to fix the grating probe 9 on the movable insulating plate 7 and parallel to the grating ruler 8 to collect the displacement data of the insulating plate 7. The grating ruler 8 is a standard part and a high-sensitivity component. It is installed as a whole on one side of the connecting plate 142 of the base 14, which facilitates fixation and reduces personnel contact.

[0032] The spring contact 16 is a cylinder with a diameter of 5mm. The material is brass with gold plating to increase conductivity. The contact position with the spring 11 is a circular plane to increase the contact area. The edges are rounded to prevent scratching the surface of the spring. The other end is threaded and fixed to the insulating plate 7. Each tail is connected to the circuit of the circuit board 6.

[0033] Preferably, the lead screw 3 is fixedly connected to the motor 1 via a coupling 2 at its top. The motor 1 provides a precise rotation angle for the lead screw 3. The motor 1, lead screw 3, and coupling 2 are standard parts. The bottom of the lead screw 3 is connected to the lead screw bearing 13, allowing the lead screw 3 to rotate along the lead screw bearing 13. The lead screw bearing 13 is fixedly installed inside the base plate 143.

[0034] The base 14 comprises an integral top plate 141, a connecting plate 142, and a bottom plate 143, with a U-shaped groove cross-section. Both the top plate 141 and the bottom plate 143 are rectangular plates, and the bottom plate 143 has bearing mounting holes for mounting the lead screw bearing 13. The base 14 is an integral structure with dimensions of 270*300mm and a height of 200mm. As the main load-bearing part of the entire device, it is compact and portable. At the same time, the base 14 has a flatness of 0.02 for the measuring platform, providing a high-precision measurement reference.

[0035] The insulating plate 7 is a non-metallic plate with a thickness of 4mm. It is fixed to the lead screw nut 4 with screws to achieve insulation between the spring 11 and the entire device, thereby improving the accuracy of measurement contact. The upper cover plate 5 is fixedly installed on top of the insulating plate 7, and the upper cover plate 5 is located above the circuit board 6. The upper cover plate 5 is a thin-walled shell that protects the middle circuit board 6. The circuit board 6 and the upper cover plate 5 are fixed to the insulating plate 7 with screws and move synchronously with the insulating plate 7.

[0036] A guide rod 15 is installed at each of the four corners of the base plate 143. The other end of each guide rod 15 is movably sleeved inside the insulating plate 7 to provide guidance for the insulating plate 7 when it moves up and down and to prevent rotation.

[0037] The spring plate 12 has a threaded interface 122 that matches the spring 11. The spring 11 is fixed by two screws. The spring plate 12 serves as a test reference and has a high-precision bottom surface. Each spring plate 12 has several mounting slots 121 evenly distributed. The mounting slots 121 are used to install the spring 11, and the shape of the mounting slots 121 matches the shape of the spring 11. Preferably, each spring plate 12 can fix a maximum of 5 springs 11, and 8 sets can be placed at the same time. During measurement, it can be placed on the base measuring platform.

[0038] The lead screw 3, coupling 2, lead screw nut 4, grating ruler 8, and grating ruler probe 9 are commonly purchased standard parts. The grating bracket 10, spring mounting plate 12, base 14, guide rod 15, and upper cover plate 5 are made of stainless steel, and the spring contact 16 is made of easily conductive brass. This automated testing device for large-volume elastic elements is easy, secure, and reliable to install and remove. It uses common, reusable materials, has a wide processing range, long service life, and high testing accuracy.

[0039] The working principle of the automated testing device for large-volume elastic components is as follows:

[0040] The operator connects circuit board 6 and motor 1 to an external computer. The programmed computer controls the motor's rotation speed and number of revolutions, reads the displacement data of the grating assembly, and sets the program internally according to actual needs. The program specifies maximum and minimum values. Probes that are not in contact before the maximum value or after the minimum value are considered defective. The remaining qualified probes are read one by one according to the probe contact sequence, and the measured data values ​​are recorded. The operator installs the spring pieces 11 one by one on the spring piece mounting plate 12 (multiple spare spring piece mounting plates 12 are available). The operator turns on motor 1. The lead screw 3 is driven to rotate by the coupling 2. The lead screw nut 4 rotates with the lead screw 3, which drives the circuit board 6, the insulating plate 7, and the spring contact 16 to move downward to the conductive contact of the spring 11, and contact the upper end of the spring 11 one by one, thus completing the circuit. The data of each spring 11 is displayed on the computer. The computer program controls the rotation speed and number of revolutions of the motor, reads the displacement data of the grating assembly, and reads the contact number and corresponding displacement of the contact 16 when it contacts the upper end of the spring 11. The computer reads the contact number and corresponding displacement of the contact that is in contact and generates statistical results. After a load test of 72 hours, the spring mounting plate 12 and the spring 11 are placed back on the base 14 of the device for remeasurement to ensure that the change before and after the test is less than 0.05.

[0041] As shown in Table 1 below, the automated testing device for large-volume elastic elements outperforms the other two methods in terms of consistency, meeting the requirement of less than 0.05. This indicates that the testing device has significant advantages in measurement accuracy and efficiency, and can replace imaging equipment and elastic element testing devices. In large-volume elastic element testing, more than 40 pieces can be tested at once, reducing the testing time by more than 20 times. Only the elastic element mounting plate 12 and the installed elastic element 11 need to be replaced for rapid testing. When pressing the elastic elements together, it is not necessary to remove them from the elastic element mounting plate 12; the elastic element mounting plate 12 can be directly used for pressing for 72 hours, ensuring the consistency and accuracy of the testing benchmark before and after 72 hours of pressing, saving testing costs and greatly improving testing efficiency.

[0042] Table 1

[0043]

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mass production automated testing device for elastic components, characterized in that: The system includes a lead screw, circuit board, insulating plate, spring plate mounting plate, base, and spring contacts. The lead screw is fixedly connected to a motor at the top and movably connected to the base plate at the bottom. A lead screw nut is fitted in the middle of the lead screw and fixedly connected to the insulating plate. A circuit board and several spring contacts are fixedly mounted on the top of the insulating plate, allowing the lead screw to rotate and drive the circuit board, insulating plate, and spring contacts to move up and down. The end of each spring contact is electrically connected to the circuit board. A grating ruler assembly is installed on one side of the insulating plate to collect displacement data of the insulating plate. A spring plate mounting plate is located on the top of the base plate to fix the springs. The motor and circuit board are used for wiring connections to an external computer. The grating ruler assembly includes a grating ruler and a grating ruler probe. The grating ruler probe is installed on one side of the insulating plate, and the grating ruler is installed on one side of the base. When the insulating plate moves up and down, it drives the grating ruler probe to cooperate with the grating ruler to collect the displacement data of the insulating plate. A grating bracket is installed on one side of the insulating board, and a grating ruler probe is installed at one end of the grating bracket. The grating bracket is used to fix the grating probe on the movable insulating board and is parallel to the grating ruler. The spring contact is cylindrical, with one end in contact with the spring being a circular plane and the edges being rounded, and the other end being threaded and fixed to the insulating board. Each tail is connected to the circuit board circuit. Simply replace the spring plate and the installed spring to quickly perform the test. When pressing the spring, it is not necessary to remove it from the spring plate; the spring plate can be pressed directly for 72 hours.

2. The automated testing device for mass production of elastic elements according to claim 1, characterized in that: The base consists of an integral top plate, connecting plate, and bottom plate, with a U-shaped groove structure in cross-section. Both the top plate and bottom plate are rectangular plates, and the bottom plate has bearing mounting holes.

3. The automated testing device for mass production of elastic elements according to claim 1, characterized in that: A top cover plate is fixedly installed above the insulating board, and the top cover plate is located above the circuit board. The top cover plate is a thin-walled shell.

4. The automated testing device for mass production of elastic elements according to claim 2, characterized in that: A guide rod is installed at each of the four corners of the base plate, and the other end of each guide rod is movably sleeved inside the insulation plate.

5. The automated testing device for mass production of elastic elements according to claim 1, characterized in that: The spring mounting plate has threaded interfaces that match the springs, and the spring mounting plate is evenly distributed with several mounting slots. Both the threaded interfaces and the mounting slots are used to install the springs.

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