A connector PIN height measuring device and its use method

Abstract

The present invention discloses a connector PIN height measuring device, the connector PIN height measuring device comprises: a support unit, a power unit and a detection unit, the support unit is in the form of a bracket with a base, used to carry the detection unit and the power unit, the detection unit and the power unit are located on the bracket, the power unit is connected to the bracket, used to provide power to the detection unit, the detection unit is connected to the power unit, used to detect the height of the PIN on the connector. The spring in the connector PIN height measuring device is compressed by the upward force of the conversion pin, the length of the conversion pin extending upward is equal to the length of the spring reduced by the compression, the multi-point laser displacement sensor can detect the length of the conversion pin extending upward, based on which it can be judged whether the connector PIN height meets the standard.

Description

Technical Field

[0001] The invention relates to the technical field of automated manufacturing, in particular to a connector PIN height measuring device and a use method thereof. Background Art

[0002] PIN pins are a kind of metal material used in connectors to complete electrical conduction and signal transmission. The raw material for manufacturing PIN pins is "tungsten carbide", that is, cemented carbide. Cemented carbide has high hardness, strength, wear resistance and corrosion resistance. It is known as "industrial teeth" and is widely used in military industry, aerospace, mechanical processing, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields. In electronic products, a large number of connecting devices are required. These connecting devices usually need to use multiple PIN pins for connection. However, the current connecting devices are becoming more and more precise and compact, making the PIN pins more and more precise and small, which makes the PIN pins easy to break during the production process. In particular, it is very difficult to find that one or several PIN pins are broken. Once broken, the matching device cannot be connected normally after being inserted. Therefore, a measuring device that can detect the height of the PIN pin is needed to prevent the connector with broken PIN pins from flowing out.

[0003] Chinese patent (CN208795126U) discloses a novel connector PIN height measuring device, including a base, a slideway groove, a slideway block, a profiling block, a limit block, a probe and a dial indicator, wherein the slideway groove is arranged above the base, the slideway block is arranged at the front and rear ends of the slideway groove, the profiling block is arranged in the slideway groove, the limit block is fixed inside the slideway groove by bolts, and the probe is arranged above the limit block, and one end of the probe is fixed on the dial indicator. The height of the internal PIN pin of the connector is detected immediately after injection molding to ensure that the wiring harness with poor PIN pin height will no longer flow into the next process, thereby greatly improving production efficiency and reducing production costs. Although this type of equipment can realize the detection of PIN pin height during the production process and can detect defective products in time, since the probe can only detect connectors with a single PIN pin, the range of detection objects is too small and the applicability is low.

[0004] Chinese patent (CN208419894U) discloses a PIN needle height detection system, including a height detection module, a displacement module and a control module. The displacement module includes a carrier plate, which is used to support products. A plurality of PIN needles are also arranged on the surface of the product. The displacement module also includes a displacement device for moving the carrier plate and the product on the carrier plate. The height detection module includes a first laser scanner for obtaining a first distance between the product surface and the first laser scanner and a second distance between the PIN needle and the first laser scanner. The height of the PIN can be obtained by the difference between the first distance and the second distance. The carrier plate is moved by the displacement device so that the first laser scanner can be aligned with the PIN needle or the product surface to obtain the first distance and the second distance. At the same time, the height of the PIN needle on the entire product surface can be obtained when moving according to certain rules. It is convenient and fast to avoid waste or customer complaints caused by the breakage of the PIN needle. Although this device can obtain the height of the PIN needle on the entire product surface, it is necessary to use a laser scanner to obtain the distance between the product surface and the detection instrument. However, the laser scanner is relatively expensive, which increases the detection cost.

[0005] Therefore, how to provide a measuring device that can obtain the heights of several PIN needles at one time while reducing the manufacturing cost of the measuring device is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0006] In view of this, the purpose of the present application is to provide a PIN needle height measuring device and a method of using the same, which adopts a multi-point laser displacement sensor instead of a 3D scanner, so as to obtain several PIN needle heights at one time and reduce the manufacturing cost of the measuring device. In addition, the above-mentioned measuring device can be integrated on the production line, so as to realize PIN needle height detection during the production process and timely discover defective products.

[0007] In order to achieve the above objectives, this application provides the following technical solutions.

[0008] A PIN needle height measuring device comprises a support unit, a power unit and a detection unit, wherein the support unit is a bracket with a base, used to carry the detection unit and the power unit, the detection unit and the power unit are located on the bracket, the power unit is connected to the bracket, used to provide power to the detection unit, and the detection unit is connected to the power unit, used to detect the height of the PIN needle on the connector;

[0009] The support unit comprises a base and a bracket, wherein the bracket comprises a triangular support plate and a main carrier plate, wherein the base is located at the bottom of the support unit, and the triangular support plate is located on the base. There are two triangular support plates, which are respectively arranged at the left and right ends of the base, and the two ends of the main carrier plate are connected to the triangular support plates;

[0010] The power unit comprises an L-shaped connecting piece, a feeding cylinder, a floating joint, a slideway, and a secondary carrier plate. The L-shaped connecting piece is connected to the upper end of the main carrier plate, the feeding cylinder is arranged on the upper part of the L-shaped connecting piece, the floating joint is arranged on the lower part of the feeding cylinder, the slideway is located on the front elevation of the main carrier plate, and the secondary carrier plate is located below the floating joint and can slide freely on the slideway;

[0011] The detection unit includes a multi-point laser displacement sensor, a conversion needle fixture, a conversion needle, and a spring. The multi-point laser displacement sensor is connected to the L-shaped connector, the conversion needle fixture is connected to the secondary carrier, a plurality of conversion needles are arranged inside the conversion needle fixture, and a spring is arranged in the middle of the conversion needle.

[0012] Preferably, the base, triangular support plate and main carrier plate are made of aluminum material, and the three are mechanically connected and locked with positioning pins and screws. Holes for fixing are reserved at the bottom of the base to facilitate the integration of the connector PIN height measuring device into the production line.

[0013] Preferably, the L-shaped connector is mechanically connected to the main carrier plate and is positioned and locked by locating pins and screws. The feed cylinder is connected to the L-shaped connector by welding. A circular hole is provided in the central part of the horizontal part of the L-shaped connector, and the diameter of the circular hole is matched with the outer diameter of the floating joint. The floating joint is located below the feed cylinder and passes through the circular hole of the L-shaped connector. Its upper end is connected to the piston rod of the feed cylinder, and its lower end is connected to the secondary carrier plate. When the pressure in the feed cylinder increases, the floating joint drives the secondary carrier plate to slide in the slide. The slide is mechanically connected to the main carrier plate and is positioned and locked by locating pins and screws.

[0014] Preferably, the multi-point laser displacement sensor is mechanically connected to the L-shaped connector by high-precision screws, the length of the conversion needle is greater than the height of the conversion needle fixture, and the conversion needle passes through the inside of the conversion needle fixture.

[0015] Furthermore, the conversion needle fixture consists of two parts, the upper part adopts a cubic structure with a plurality of through holes, the diameter of the holes in the cube is slightly larger than the diameter of the conversion needle, and the conversion needle can move up and down inside the cube, a metal plate with screw holes is respectively arranged on the left and right sides of the cube, and a screw hole is arranged at the lower end of the cube, and the lower part adopts an inverted "L"-shaped structure with a plurality of through holes, the diameter of the holes in the inverted "L"-shaped structure is slightly larger than the diameter of the conversion needle, and the conversion needle can move up and down inside the inverted "L"-shaped structure, and a through countersunk screw hole is arranged at the upper end of the inverted "L"-shaped structure, the lower surface of the upper part of the conversion needle fixture and the upper surface of the lower part are the same in shape, the screw holes in the upper part coincide with the screw holes in the lower part, and the upper and lower parts are connected by means of positioning pins and screw locking.

[0016] Furthermore, the conversion needle adopts a columnar structure with a disc-shaped protrusion in the middle, and a spring is arranged above the disc-shaped protrusion of the conversion needle. One end of the spring abuts on the disc-shaped protrusion of the conversion needle, and the other end abuts on the conversion needle jig. In the initial state, the lower end of the conversion needle is exposed from the bottom of the conversion needle jig, and the upper end of the conversion needle is flush with the upper end of the conversion needle jig. When the spring is compressed, the upper end of the conversion needle extends out from the upper end of the conversion needle jig. The conversion needle jig, the conversion needle, and the spring are mechanically connected to the secondary carrier as a whole, and are connected by bolts.

[0017] The technical solution of the connector PIN height measuring device mentioned above includes the following steps:

[0018] a. Integrate the connector PIN height measuring device into the production line for processing connectors with PIN pins;

[0019] b. Supply gas to the feed cylinder to gather energy and press it down. The conversion needle fixture connected to the secondary carrier plate moves downward, and the upper end of the conversion needle extends from the upper end of the conversion needle fixture. The multi-point laser displacement sensor is operated to detect the height value of the conversion needle, record the height value and determine whether the conversion needle is in an abnormal state. If there is an abnormal state, the electrical test program alarm prompts to replace the conversion needle; if there is no abnormal state, proceed to the next step;

[0020] c. As the pressure in the feed cylinder gradually decreases, the piston rod drives the conversion pin jig to rise. After the connector with the PIN pin is processed, it moves to the bottom of the conversion pin jig through the conveyor belt on the production line and stops, waiting for inspection;

[0021] d. Supply air to the feed cylinder to generate air pressure, press the conversion needle fixture connected to the secondary carrier downward, the conversion needle contacts and presses the connector tightly, the conversion needle in the conversion needle fixture extends from the upper end of the conversion needle fixture, and the spring in the conversion needle fixture is compressed by the upward force of the disc-shaped protrusion on the conversion needle, and the length of the conversion needle extending upward is equal to the length of the spring reduced by compression;

[0022] e. Run the multi-point laser displacement sensor to detect the conversion pin height value. By comparing and converting with the initial measurement data of the PCB board or PIN pin height, determine whether the height data result of the connector PIN pin relative to the PCB board is within the allowable error value range. If the error value meets the requirement, proceed to the next step. Otherwise, the electrical test program alarm prompts;

[0023] f. As the pressure in the feed cylinder gradually decreases, the piston rod drives the conversion pin fixture to rise, and the spring drives the conversion pin to return to its original position. The conveyor belt on the production line continues to run, driving the connector forward and conveying the next PIN connector to be tested to the bottom of the conversion pin fixture.

[0024] The advantages and effects of this application are as follows:

[0025] (1) In the connector PIN needle height measurement device disclosed in the present invention, a multi-point laser displacement sensor is used instead of a 3D scanner, which can not only obtain several PIN needle heights at one time, but also reduce the cost of the measurement device.

[0026] (2) In the connector PIN height measuring device disclosed in the present invention, the feed cylinder uses steam as energy, and the multi-point laser displacement sensor uses electricity as energy. Compared with the traditional pure electric drive method, this gas-electric hybrid drive method further reduces the detection cost.

[0027] (3) In the connector PIN height measuring device disclosed in the present invention, the multi-point laser displacement sensor is connected to the L-shaped connector with high-precision screws, and the conversion pin fixture is connected to the secondary carrier with bolts and nuts, which have the characteristics of quick locking and replacement. Therefore, the device can replace the matching detection unit according to the different detection objects, which greatly improves the applicability of the detection device.

[0028] (4) In the connector PIN height measuring device disclosed in the present invention, a modular structural layout is adopted. The entire device is divided into three modules: a support unit, a power unit and a detection unit. Each module involves a small number of components and a reasonable connection method. This modular design method has strong replication compatibility and can be extended to product requirements of various shapes, greatly increasing the reusability of the device.

[0029] (5) In the connector PIN needle height measuring device disclosed in the present invention, the components used have strong reusability, the mold is developed and formed in one step, the manufacturing cost is low, and the precision is high.

[0030] (6) In the connector PIN height measurement device disclosed in the present invention, a multi-point laser displacement sensor is used, which is less affected by light intensity or vibration. At the same time, the device has a compact structure, shortens the path that the test light beam needs to travel, and greatly reduces the degree of influence of interference.

[0031] (7) In the connector PIN height measuring device disclosed in the present invention, a hole for fixing is reserved at the bottom of the base, and the device can be connected to the production line through positioning pins and screws, so that the PIN height can be detected during the production process, thereby greatly improving the yield rate and reducing the occurrence of customer complaints.

[0032] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0033] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0035] Figure 1 A three-dimensional diagram of a connector PIN height measuring device provided in an embodiment of the present application;

[0036] Figure 2 A front view of a connector PIN height measuring device provided in an embodiment of the present application;

[0037] Figure 3 A right side view of a connector PIN height measuring device provided in an embodiment of the present application;

[0038] Figure 4 A three-dimensional diagram of a conversion pin jig of a connector PIN pin height measurement device provided in an embodiment of the present application;

[0039] Among them, 1-base, 2-triangular support plate, 3-main carrier plate, 4-L-type connector, 5-feed cylinder, 6-floating joint, 7-slide, 8-secondary carrier plate, 9-multi-point laser displacement sensor, 10-conversion needle fixture, 11-conversion needle, 12-spring. DETAILED DESCRIPTION

[0040] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for the sake of clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0041] It should be understood that the references to "one embodiment" or "this embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "one embodiment" or "this embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0042] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0043] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0044] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0045] Example 1

[0046] This embodiment mainly introduces the basic composition and connection relationship of a connector PIN height measurement device of the present invention.

[0047] like Figure 1 As shown, it shows a stereoscopic view of a connector PIN height measuring device; Figure 2 As shown, it shows a front view of a connector PIN height measuring device; Figure 3 As shown, it shows a right side view of a connector PIN height measuring device.

[0048] Combination Figure 1 , 2 As shown in , 3, a connector PIN needle height measuring device provided in an embodiment of the present application includes a support unit, a power unit and a detection unit. The structure of the support unit is a bracket with a base 1, which is used to carry the detection unit and the power unit. The detection unit and the power unit are located on the bracket. The power unit is connected to the bracket to provide power to the detection unit. The detection unit is connected to the power unit to detect the height of the PIN needle on the connector.

[0049] Preferably, the support unit comprises a base 1 and a bracket, the bracket comprises a triangular support plate 2 and a main carrier plate 3, the base 1 is located at the bottom of the support unit, the triangular support plate 2 is located on the base 1, there are two triangular support plates 2, which are respectively arranged at the left and right ends of the base 1, and the two ends of the main carrier plate 3 are connected to the triangular support plates 2;

[0050] Furthermore, the base 1, triangular support plate 2, and main carrier plate 3 are made of aluminum material, and the three are mechanically connected and locked with positioning pins and screws. Holes for fixing are reserved at the bottom of the base 1, which facilitates the integration of the connector PIN height measuring device into the production line.

[0051] Preferably, the power unit comprises an L-shaped connector 4, a feed cylinder 5, a floating joint 6, a slideway 7, and a secondary carrier plate 8, wherein the L-shaped connector 4 is connected to the upper end of the main carrier plate 3, the feed cylinder 5 is arranged at the upper part of the L-shaped connector 4, the floating joint 6 is arranged at the lower part of the feed cylinder 5, the slideway 7 is connected to the main carrier plate 3, and the secondary carrier plate 8 is located below the floating joint 6 and can slide freely on the slideway 7;

[0052] Furthermore, the L-shaped connector 4 is mechanically connected to the main carrier plate 3 and is positioned and locked with positioning pins and screws. The feed cylinder 5 is connected to the L-shaped connector 4 by welding. A circular hole is provided in the central part of the horizontal part of the L-shaped connector 4, and the diameter of the circular hole is adapted to the outer diameter of the floating joint 6. The floating joint 6 is located below the feed cylinder 5 and passes through the circular hole of the L-shaped connector 4. Its upper end is connected to the piston rod of the feed cylinder 5, and its lower end is connected to the secondary carrier plate 8. When the pressure in the feed cylinder 5 increases, the floating joint 6 drives the secondary carrier plate 8 to slide in the slide 7. The slide 7 is mechanically connected to the main carrier plate 3 and is positioned and locked with positioning pins and screws.

[0053] like Figure 4 As shown, it shows a stereoscopic view of a conversion pin fixture of a connector PIN pin height measuring device.

[0054] Preferably, the detection unit includes a multi-point laser displacement sensor 9, a conversion needle fixture 10, a conversion needle 11, and a spring 12. The multi-point laser displacement sensor 9 is connected to the L-shaped connector 4. The length of the conversion needle 11 is greater than the height of the conversion needle fixture 10. The conversion needle 11 passes through the inside of the conversion needle fixture 10. The conversion needle fixture 10 consists of an upper and lower part. The upper part adopts a cubic structure with a plurality of through holes. The diameter of the hole in the cube is slightly larger than the diameter of the conversion needle 11. The conversion needle 11 can move up and down inside the cube. A metal plate with a screw hole is respectively arranged on the left and right sides of the cube. The lower end of the cube is provided with a screw hole. The lower part adopts an inverted "L"-shaped structure with a plurality of through holes. The diameter of the hole in the inverted "L"-shaped structure is slightly larger than the diameter of the conversion needle 11. The conversion needle 11 can move up and down inside the inverted "L"-shaped structure. The upper end of the inverted "L"-shaped structure is provided with a through countersunk screw hole. The lower surface of the upper part of the conversion needle fixture 10 and the upper surface of the lower part are of the same shape. The screw hole of the upper part coincides with the screw hole of the lower part. The upper and lower parts are connected by a positioning pin and a screw locking method. The conversion needle 11 adopts a columnar structure with a disc-shaped protrusion in the middle. A spring 12 is arranged above the disc-shaped protrusion of the conversion needle 11. One end of the spring 12 abuts on the disc-shaped protrusion of the conversion needle 11, and the other end abuts on the conversion needle fixture 10. In the initial state, the lower end of the conversion needle 11 is exposed from the bottom of the conversion needle fixture 10, and the upper end of the conversion needle 11 is flush with the upper end of the conversion needle fixture 10. When the spring is compressed, the upper end of the conversion needle 11 extends from the upper end of the conversion needle fixture 10. The conversion needle fixture 10, the conversion needle 11, and the spring 12 are connected to the secondary carrier 8 as a whole.

[0055] Furthermore, the multi-point laser displacement sensor 9 is mechanically connected to the L-shaped connector 4 by high-precision screws, which can realize the rapid locking and replacement of the multi-point laser displacement sensor 9. Within the detection range of the multi-point laser displacement sensor 9, the extension lengths of up to 31 conversion needles 11 can be detected simultaneously. The conversion needle fixture 10 is mechanically connected to the secondary carrier plate 8 by bolts and nuts, which can realize the rapid disassembly and installation of the conversion needle fixture 10.

[0056] Furthermore, the detection object of this embodiment is a connector with 8 PIN pins, and the height measurement device is provided with 9 conversion pins 11 for this specific connector, wherein 1 conversion pin 11 is used to detect the height of the PCB board, and the other 8 conversion pins 11 are used to detect the height of the corresponding 8 PIN pins on the connector. In other embodiments, the number of conversion pins of the detection unit is set according to the number of PIN pins of the detection object.

[0057] It is worth noting that the above-mentioned feed cylinder 5 and multi-point laser displacement sensor 9 are both existing technologies, the piston rod and cylinder barrel are both parts of the feed cylinder, and the PCB board is a part of the connector, which will not be elaborated in the present invention.

[0058] Example 2

[0059] On the basis of Example 1, this example further proposes a method for using a connector PIN height measuring device, which has the same technical features and technical descriptions as Example 1 and will not be repeated in this example.

[0060] Combination Figure 1 , 4 As shown, the method of using the connector PIN height measuring device is specifically as follows:

[0061] Step 1: Integrate a connector PIN height measuring device into a production line for processing connectors with PINs, and the height measuring device is located in a downstream area of ​​the production line relative to the connector processing device with PINs;

[0062] Step 2: Before each PIN needle detection, first supply air to the feed cylinder 5 to focus energy to press it down. As the pressure in the cylinder gradually increases, the piston rod and the floating joint 6 move downward together. Under the thrust of the floating joint 6, the secondary carrier 8 slides along the slide 7, and the conversion needle fixture 10 connected to the secondary carrier 7 is pressed down. The conversion needle 11 set in the conversion needle fixture 10 contacts the upper surface of the production line and moves upward. The upper end of the conversion needle 11 extends from the upper end of the conversion needle fixture 10. The multi-point laser displacement sensor 9 is operated to detect the height values ​​of the 9 conversion needles 11. The initial measurement data of the PCB board or PIN needle height is represented by A0~A8. The height value is recorded and it is determined whether the conversion needle 11 is in an abnormal state. If there is an abnormal state, the electrical test program alarm prompts to replace the conversion needle 11; if there is no abnormal state, execute step 3;

[0063] Step 3: As the pressure in the feed cylinder 5 gradually decreases, the piston rod drives the conversion pin jig 10 to rise. After the connector with the PIN pin is processed, it moves to the bottom of the conversion pin jig 10 through the conveyor belt on the production line and stops, waiting for inspection;

[0064] Step 4: Supply gas to the feed cylinder 5 to generate air pressure. As the pressure in the cylinder gradually increases, the piston rod and the floating joint 6 move downward together. Under the thrust of the floating joint 6, the secondary carrier 8 slides along the slideway 7, and the conversion pin fixture 10 connected to the secondary carrier 7 is pressed down. The conversion pin 11 contacts and presses the connector tightly. One conversion pin 11 detects the height of the PCB board, and the other eight conversion pins 11 detect the height of the corresponding eight PIN pins on the connector. Under the continuous action of force, the conversion pin 11 in the conversion pin fixture 10 moves upward and extends from the upper end of the conversion pin fixture 10. The spring 12 in the conversion pin fixture 10 is compressed by the upward force of the disc-shaped protrusion on the conversion pin 11. The length of the conversion pin 11 extending upward is equal to the length of the spring 12 reduced by compression.

[0065] Step 5: Run the multi-point laser displacement sensor 9 to detect the height value of the conversion pin 11. The secondary measurement data of the PCB board height is represented by B0, the secondary measurement data of the PIN pin height is represented by B1~B8, and the height data of the PIN pin relative to the PCB board is represented by H1~H8. By comparing and converting with the initial measurement data of the PCB board or the PIN pin height, it is determined whether the height data result of the connector PIN pin relative to the PCB board is within the allowable error value range. If the error value meets the requirement, it means that the connector PIN pin height is good, and step 6 is executed. Otherwise, the connector PIN pin height is bad, and the electrical test program alarm prompts;

[0066] Step 6: As the pressure in the feed cylinder 5 gradually decreases, the piston rod drives the conversion pin fixture 10 to rise, the conversion pin 11 is separated from the PIN pin of the connector, and the elastic force in the compressed spring 12 is released. The spring 12 drives the conversion pin 11 to return to its original position, and the conveyor belt on the production line continues to run, driving the connector to move forward, and conveying the next PIN pin connector to be tested to the bottom of the conversion pin fixture 10. At this point, the connector PIN pin height measurement method integrated with the production line is realized.

[0067] The above description of all disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connector PIN height measuring device, characterized in that the connector PIN height measuring device comprises a support unit, a power unit and a detection unit, the support unit is a bracket with a base (1) for carrying the detection unit and the power unit, the detection unit and the power unit are located on the bracket, the power unit is connected to the bracket for providing power to the detection unit, and the detection unit is connected to the power unit for detecting the height of the PIN on the connector; The support unit comprises a base (1) and a bracket, the bracket comprising a triangular support plate (2) and a main carrier plate (3), the base (1) being located at the bottom of the support unit, the triangular support plate (2) being located on the base (1), the triangular support plates (2) being two in number and being arranged at the left and right ends of the base (1), respectively, and the left and right ends of the main carrier plate (3) being connected to the triangular support plates (2); The base (1), the triangular support plate (2), and the main carrier plate (3) are made of aluminum material, and the three are mechanically connected and locked in place with positioning pins and screws. Holes for fixing are reserved at the bottom of the base (1); The power unit comprises an L-shaped connecting piece (4), a feeding cylinder (5), a floating joint (6), a slideway (7), and a secondary carrier plate (8); the L-shaped connecting piece (4) is connected to the upper end of the main carrier plate (3); the feeding cylinder (5) is arranged on the upper part of the L-shaped connecting piece (4); the floating joint (6) is arranged on the lower part of the feeding cylinder (5); the slideway (7) is connected to the main carrier plate (3); the secondary carrier plate (8) is located below the floating joint (6) and is connected to the slideway (7) and can slide freely on the slideway (7); The L-shaped connecting piece (4) is mechanically connected to the main carrier plate (3) and is positioned and locked by positioning pins and screws. The feed cylinder (5) is connected to the L-shaped connecting piece (4) by welding. A circular hole is provided at the central part of the horizontal part of the L-shaped connecting piece (4), and the diameter of the circular hole is matched with the outer diameter of the floating joint (6). The floating joint (6) is located below the feed cylinder (5) and passes through the circular hole of the L-shaped connecting piece (4). The upper end of the floating joint is connected to the piston rod of the feed cylinder (5) and the lower end of the floating joint is connected to the secondary carrier plate (8). The secondary carrier plate (8) can slide on the slideway (7). The slideway (7) is mechanically connected to the main carrier plate (3) and is positioned and locked by positioning pins and screws. The detection unit comprises a multi-point laser displacement sensor (9), a conversion needle fixture (10), a conversion needle (11), and a spring (12); the multi-point laser displacement sensor (9) is connected to the L-shaped connecting piece (4); the conversion needle fixture (10) is connected to the secondary carrier (8); a plurality of conversion needles (11) are arranged inside the conversion needle fixture (10); and a spring (12) is arranged in the middle of the conversion needle (11); The multi-point laser displacement sensor (9) and the L-shaped connector (4) are mechanically connected by high-precision screws. The conversion needle fixture (10) and the secondary carrier plate (8) are mechanically connected by bolts and nuts. The length of the conversion needle (11) is greater than the height of the conversion needle fixture (10). The conversion needle (11) passes through the interior of the conversion needle fixture (10). The conversion needle fixture (10) is composed of an upper and lower part. The upper part adopts a cubic structure with a plurality of through holes. The diameter of the holes in the cube is slightly greater than the diameter of the conversion needle (11). The conversion needle (11) can move up and down inside the cube. A metal plate with a screw hole is provided on the left and right sides of the cube respectively. The lower end of the cube is provided with a screw hole. The lower part adopts an inverted "L"-shaped structure with a plurality of through holes. The diameter of the holes in the inverted "L"-shaped structure is slightly greater than the diameter of the conversion needle (11). The conversion needle (11) can move up and down inside the inverted "L"-shaped structure. The upper end of the inverted "L"-shaped structure is provided with a through countersunk screw hole. The lower surface of the upper part of the conversion needle fixture (10) and the upper surface of the lower part are of the same shape. The screw hole of the upper part coincides with the screw hole of the lower part. The upper and lower parts are connected by a positioning pin plus a screw locking method. The conversion needle (11) adopts a columnar structure with a disc-shaped protrusion in the middle. A spring (12) is provided above the disc-shaped protrusion of the conversion needle (11). One end of the spring (12) abuts against the conversion needle (11). 1), one end of the conversion pin (11) is against the conversion pin fixture (10); in the initial state, the lower end of the conversion pin (11) is exposed from the bottom of the conversion pin fixture (10), and the upper end of the conversion pin (11) is flush with the upper end of the conversion pin fixture (10); in the spring-compressed state, the upper end of the conversion pin (11) extends out from the upper end of the conversion pin fixture (10); the conversion pin fixture (10), the conversion pin (11), and the spring (12) are connected to the secondary carrier plate (8) as a whole.

2. The method for using the connector PIN height measuring device according to claim 1, characterized in that: The following steps are involved: a. Integrate the connector PIN height measuring device into the production line for processing connectors with PIN pins; b. Supplying air into the feed cylinder (5) to gather energy and press it downward, so that the conversion needle fixture (10) connected to the secondary carrier plate (7) moves downward, and the upper end of the conversion needle (11) extends from the upper end of the conversion needle fixture (10). The multi-point laser displacement sensor (9) is operated to detect the height value of the conversion needle (11), record the height value and determine whether the conversion needle (11) is in an abnormal state. If there is an abnormal state, the electrical test program alarm prompts to replace the conversion needle (11); if there is no abnormal state, the next step is executed; c. As the pressure in the feed cylinder (5) gradually decreases, the piston rod drives the conversion pin jig (10) to rise. After the connector with the PIN pin is processed, it moves to the position directly below the conversion pin jig (10) via the conveyor belt on the production line and stops to wait for inspection; d. Supplying air to the feed cylinder (5) to generate air pressure, the conversion needle fixture (10) connected to the secondary carrier plate (7) is pressed downward, the conversion needle (11) contacts and presses the connector, the conversion needle (11) in the conversion needle fixture (10) extends from the upper end of the conversion needle fixture (10), and the spring (12) in the conversion needle fixture (10) is compressed by the upward force of the disc-shaped protrusion on the conversion needle (11), and the length of the conversion needle (11) extending upward is equal to the length of the spring (12) reduced by compression; e. Run the multi-point laser displacement sensor (9) to detect the height value of the conversion pin (11), and compare and convert it with the initial measurement data of the PCB board or the PIN pin height to determine whether the height data result of the connector PIN pin relative to the PCB board is within the allowable error value range. If the error value meets the requirement, execute the next step; otherwise, the electrical test program alarm prompts; f. As the pressure in the feed cylinder (5) gradually decreases, the piston rod drives the conversion pin fixture (10) to rise, and the spring (12) drives the conversion pin (11) to return to its original position. The conveyor belt on the production line continues to operate, driving the connector to move forward, and conveying the next PIN pin connector to be inspected to the bottom of the conversion pin fixture (10); at this point, a connector PIN pin height measurement method integrated with the production line is realized.

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