Surface-mounted crystal oscillator high-low temperature automatic testing device and testing method

Abstract

The application discloses a kind of surface mount crystal high-low temperature automatic testing device and testing method, belong to surface mount crystal test field.A kind of surface mount crystal high-low temperature automatic testing device, including temperature control box, the detection box of fixed in the top of temperature control box and the detector of fixed in the top of detection box, the detection box inner chamber bottom is fixedly connected with detection table;The application is rotated by the temperature guide vane, so that the gas after temperature change moves to surface mount crystal, to accelerate the airflow heat exchange speed in detection box, so that temperature is more quickly transferred to surface mount crystal, to reduce the time required for temperature adjustment, improve test efficiency;And by transmission effect, reciprocating push spring telescopic rod collides detection table side wall, to generate slight vibration effect, to simulate the more real use environment of surface mount crystal, effectively evaluate the stability and reliability of surface mount crystal under this condition work, improve the representativeness of test result.

Description

TECHNICAL FIELD

[0001] The present application relates to the surface-mounted crystal oscillator testing field, and particularly relates to a high-low temperature automatic testing device and testing method for surface-mounted crystal oscillators. BACKGROUND

[0002] The surface-mounted crystal oscillator is a small-sized pinless crystal oscillator packaged by using surface mounting technology, and provides a reference signal for electronic products as a clock reference. In modern electronic technology, the surface-mounted crystal oscillator is widely applied to fields such as radar, communication, measurement and control, countermeasure and navigation. With the development of modern electronic technology application, the performance of electronic products is continuously improved, and higher requirements are also put forward for the surface-mounted crystal oscillator. Therefore, the performance indicators of the surface-mounted crystal oscillator need to be tested to meet the use requirements. The performance indicators of the surface-mounted crystal oscillator are closely related to temperature. Therefore, the performance indicators of the surface-mounted crystal oscillator are usually tested in high and low temperature environments to ensure the representativeness of the test data.

[0003] At present, when the surface-mounted crystal oscillator is tested in high and low temperature environments, a long waiting time is required for temperature adjustment each time, the temperature cannot be quickly covered around the surface-mounted crystal oscillator, and the test efficiency is reduced. In addition, in the detection, the detection probe and the power connection end of the surface-mounted crystal oscillator are prone to poor contact, which causes errors in the detection data and reduces the detection accuracy. Therefore, the present application provides a high-low temperature automatic testing device and testing method for surface-mounted crystal oscillators. SUMMARY

[0004] The present application aims to solve the problems in the prior art that a long waiting time is required for temperature adjustment each time, the test efficiency is reduced, and the detection probe and the power connection end of the surface-mounted crystal oscillator are prone to poor contact, which causes errors in the detection data and reduces the detection accuracy. The present application provides a high-low temperature automatic testing device and testing method for surface-mounted crystal oscillators.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A high-low temperature automatic testing device for surface-mounted crystal oscillators comprises a temperature control box, a detection box fixed on the top of the temperature control box, and a detector fixed on the top of the detection box. The inner cavity of the detection box is fixedly connected with a detection table at the bottom. The device further comprises a moving seat arranged in the detection box, wherein the bottom of the moving seat is fixedly connected with a positioning cylinder, and the detection box is provided with an adjusting part for adjusting the position of the moving seat. A temperature guiding assembly is arranged in the detection box, and the temperature guiding assembly is used for quickly pushing the temperature in the temperature control box into the detection area. A vibration assembly is arranged in the detection box, and the vibration assembly is used for applying a vibration effect to the detection table during detection.

[0007] In order to improve the test accuracy, preferably, the positioning cylinder is slidably connected with a positioning pressing plate, the top of the positioning pressing plate is fixedly connected with a first spring between the top of the positioning cylinder, the bottom of the positioning pressing plate is fixedly connected with a positioning pressing rod, the positioning pressing rod penetrates to below the positioning cylinder, two groups of telescopic cylinders are rotatably connected on the outer wall of the positioning pressing rod, and the telescopic cylinders are slidably connected with electric contact probes, and the top of the electric contact probes is fixedly connected with a second spring between the top of the telescopic cylinders.

[0008] In order to improve the convenience of the test, preferably, the adjusting part comprises a longitudinal sliding rail, the longitudinal sliding rail is slidably connected with a longitudinal sliding plate, the inner cavity of the longitudinal sliding plate is fixedly connected with a guide sliding rod, and the moving seat is slidably sleeved on the guide sliding rod.

[0009] In order to improve the test efficiency, preferably, the temperature guide assembly comprises two groups of temperature guide boxes, the two groups of temperature guide boxes are respectively fixed on the two sides of the inner cavity of the detection box, a driven shaft is rotatably connected in the temperature guide box, a temperature guide blade is fixedly connected on the driven shaft, one end of the driven shaft penetrates the temperature guide box and is rotatably connected on the inner wall of the detection box, a driving shaft is rotatably connected in the detection box, a driving motor is fixedly connected on the outer wall of the detection box, the output shaft of the driving motor is fixedly connected with the end of the driving shaft, and the driving shaft and the driven shaft are transmissionally connected through a belt pulley group.

[0010] Further, the moving seat is provided with a temperature guide groove, the bottom of the inner cavity of the positioning cylinder is fixedly connected with a temperature guide pipe, the bottom end of the temperature guide pipe penetrates to below the positioning cylinder, the bottom end of the positioning cylinder is communicated with the inner cavity of the temperature guide groove, the side of the temperature guide box facing the positioning cylinder is fixedly and communicated with a heat pipe, the other end of the heat pipe is communicated with the inner cavity of the temperature guide groove, and the side of the temperature guide box away from the positioning cylinder is provided with an air inlet groove.

[0011] In order to improve the comprehensiveness of the detection result, preferably, the vibration assembly comprises two groups of vibration boxes, the two groups of vibration boxes are respectively fixed on the two sides of the detection table, a piston plate is slidably connected in the vibration box, a spring telescopic rod is fixedly connected on the inner side wall of the piston plate, a push-pull rod is rotatably connected on the outer side wall of the piston plate, a linkage rod is rotatably connected on the two sides of the top of the detection box, a worm wheel is fixedly connected on the linkage rod, a worm is fixedly connected on the driving shaft, the worm and the worm wheel are meshingly transmissionally connected, the bottom end of the linkage rod is fixedly connected with a rotating disc, and the other end of the push-pull rod is rotatably connected on the bottom of the rotating disc.

[0012] In order to improve the stability of the circuit board with a surface-mounted crystal oscillator, preferably, the detection table is internally provided with an adsorption groove, a plurality of adsorption holes are formed in the top of the adsorption groove, an air suction pipe is fixedly and communicated on the side wall of the vibration box, the other end of the air suction pipe is communicated with the inner cavity of the adsorption groove, and a one-way valve is arranged in the air suction pipe.

[0013] In order to improve the tightness of the circuit connection, preferably, the mobile seat is provided with an inflation groove, the inflation groove is communicated with the inner cavity of the positioning cylinder, the two sides of the positioning cylinder are fixed and communicated with the air guide pipe, the other end of the air guide pipe is communicated with the inner cavity of the telescopic cylinder, two groups of the vibration box are fixed and communicated with the inflation pipe, the other end of the inflation pipe is communicated with the inflation groove, and the inflation pipe is provided with a one-way valve.

[0014] In order to facilitate the removal of the circuit board with the surface-mounted crystal oscillator, preferably, the side wall of the mobile seat is fixedly connected with a pressure discharge pipe, the pressure discharge pipe is communicated with the inner cavity of the inflation groove, and the pressure discharge pipe is provided with an electromagnetic valve.

[0015] A surface-mounted crystal oscillator high-low temperature automatic testing method, the steps are as follows:

[0016] Step one: place the circuit board with the surface-mounted crystal oscillator on the detection table;

[0017] Step two: communicate the surface-mounted crystal oscillator with the detector;

[0018] Step three: change the test temperature in the detection box through the temperature control box;

[0019] Step four: in the process of temperature change, push the gas in the detection box to move to the detection area of the detection table to realize rapid temperature change;

[0020] Step five: in the test process, apply a vibration effect to the detection table;

[0021] Step six: by observing the related data on the detector, the test results of the surface-mounted crystal oscillator in the high-low temperature environment are obtained, and the advantages and disadvantages of the surface-mounted crystal oscillator are judged.

[0022] Compared with the prior art, the present application provides a surface-mounted crystal oscillator high-low temperature automatic testing device and testing method, which has the following advantages:

[0023] 1、The surface-mounted crystal oscillator high-low temperature automatic testing device, through the rotation of the temperature guide blade, the gas around the output end of the temperature control box moves quickly to the surface-mounted crystal oscillator, so as to accelerate the airflow heat exchange speed in the detection box, so that the high temperature or low temperature effect is more quickly transmitted to the surface-mounted crystal oscillator, thereby reducing the temperature adjustment time and improving the test efficiency; and through the transmission effect, the reciprocating push spring extension rod collides with the side wall of the detection table, thereby producing a slight vibration effect, so as to simulate a more realistic use environment of the surface-mounted crystal oscillator, effectively evaluate the stability and reliability of the surface-mounted crystal oscillator under this condition, and improve the representativeness of the test results.

[0024] 2、The watch crystal high and low temperature automatic testing device, through the setting of longitudinal slide rail and longitudinal slide plate, the position of the positioning cylinder is adjusted, so that the electrical probe contacts the electrical terminal, the convenience of testing is improved; and under the rebound action of the first spring and the second spring, the positioning pressure rod extrudes and fixes the watch crystal, and the electrical probe and the electrical terminal are tightly attached, effectively avoiding the adverse effects of poor circuit contact on the test results, ensuring the accuracy of the detection results.

[0025] 3、The watch crystal high and low temperature automatic testing device, through the reciprocating sliding of the piston plate in the vibration box, first, the gas enters the positioning cylinder and the telescopic cylinder, the positioning pressure rod and the electrical probe are pushed down, the extrusion fixing effect of the watch crystal is improved, and the connection with the electrical terminal is more tightly, ensuring the test precision; secondly, the gas pressure in the adsorption groove is reduced, the circuit board with the watch crystal is adsorbed and fixed on the top of the detection table, further improving the stability of the watch crystal during detection, ensuring the detection effect. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view overall structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application;

[0027] Figure 2 It is a detection box internal structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application;

[0028] Figure 3 It is a detection box local section structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application Figure 1 ;

[0029] Figure 4 It is a detection box local section structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application Figure 3 enlarged structure schematic diagram of area A;

[0030] Figure 5 It is a detection box local section structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application Figure 3 enlarged structure schematic diagram of area B;

[0031] Figure 6 It is a detection box local section structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application Figure 2 ;

[0032] Figure 7 It is a detection box local section structure schematic diagram of a watch crystal high and low temperature automatic testing device put forward by the application Figure 6 enlarged structure schematic diagram of area C;

[0033] Figure 8A detection box partial cross-section structure diagram of a high and low temperature automatic testing device for surface-mounted crystal oscillator is provided Figure 3 .

[0034] In the figure: 1, temperature control box; 2, detection box; 21, detection table; 3, detector; 4, moving seat; 41, positioning cylinder; 411, positioning pressing plate; 412, first spring; 413, positioning pressing rod; 414, telescopic cylinder; 415, power connection probe; 416, second spring; 42, longitudinal slide rail; 421, longitudinal slide plate; 422, guide slide rod; 5, temperature guide box; 51, driven shaft; 52, temperature guide blade; 53, driving shaft; 531, driving motor; 532, pulley set; 54, temperature guide groove; 541, temperature guide pipe; 542, heat conduction pipe; 543, air inlet groove; 6, vibration box; 61, piston plate; 62, spring telescopic rod; 63, push-pull rod; 64, linkage rod; 641, worm gear; 642, worm; 643, turntable; 7, adsorption groove; 71, adsorption hole; 72, air suction pipe; 73, air charging groove; 74, air guide pipe; 75, air charging pipe; 8, pressure discharge pipe. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] Embodiment one:

[0038] Reference Figures 1-8The utility model provides a kind of surface mount crystal high-low temperature automatic testing device, including temperature control box 1, temperature control box 1 uses existing mature technology, for heating (high temperature) or refrigeration (low temperature) to detection box 2 inside environment, realizes the high-low temperature automation detection, improves the convenience of test, fixed in the top of temperature control box 1 detection box 2, and the detection instrument 3 fixed in the top of detection box 2, the output of temperature control box 1 is communicated with the inner chamber of detection box 2, and the detection platform 21 is fixedly connected at the inner chamber bottom of detection box 2, further including: moving seat 4, moving seat 4 is arranged in detection box 2, wherein the bottom of moving seat 4 is fixedly connected with positioning cylinder 41, and adjustment part for adjusting the position of moving seat 4 is arranged in detection box 2;Temperature guide component, temperature guide component is arranged in detection box 2, and temperature guide component is used to push the temperature sent to detection area by temperature control box 1 in detection box 2 fast;Vibration component, vibration component is arranged in detection box 2, and vibration component is used to exert vibration effect on detection platform 21 during detection.

[0039] Refer to Figures 3-6 Wherein, positioning pressure plate 411 is slidably connected in positioning cylinder 41, first spring 412 is fixedly connected between the top of positioning pressure plate 411 and the top of positioning cylinder 41, the bottom of positioning pressure plate 411 is fixedly connected with positioning pressure rod 413, and positioning pressure rod 413 penetrates below positioning cylinder 41, two groups of telescopic cylinders 414 are rotatably connected on the outer wall of positioning pressure rod 413, and power connection probe 415 is slidably connected in telescopic cylinder 414, and second spring 416 is fixedly connected between the top of power connection probe 415 and the top of telescopic cylinder 414;Adjustment part includes longitudinal slide rail 42, longitudinal slide rail 42 is slidably connected with longitudinal slide plate 421, and longitudinal slide plate 421 inner chamber is fixedly connected with guide slide rod 422, and moving seat 4 is slidably sleeved on guide slide rod 422.

[0040] Through the above structure setting, pulling moving seat 4 makes it slide along longitudinal slide rail 42 and longitudinal slide plate 421, adjusts positioning cylinder 41 to the top of surface mount crystal, and positioning pressure rod 413 is abutted on the top of surface mount crystal, so as to realize positioning before test, then rotates two sides of power connection probe 415, and it is aligned with the power connection end on both sides of surface mount crystal, so as to place surface mount crystal in the test circuit communicated with detection instrument 3, and under the rebound effect of first spring 412 and second spring 416, the surface mount crystal is extruded and fixed, and power connection probe 415 is tightly combined with power connection end, effectively avoid the adverse effect of poor circuit contact on test result, ensure the accuracy of detection result.

[0041] Refer to Figures 1-4The temperature guiding assembly comprises two groups of temperature guiding boxes 5, which are fixed on the two sides of the inner cavity of the detection box 2. A driven shaft 51 is rotatably connected in the temperature guiding box 5. A temperature guiding vane 52 is fixedly connected on the driven shaft 51. One end of the driven shaft 51 penetrates through the temperature guiding box 5 and is rotatably connected on the inner wall of the detection box 2. A driving shaft 53 is rotatably connected in the detection box 2. A driving motor 531 is fixedly connected on the outer wall of the detection box 2. The output shaft of the driving motor 531 is fixedly connected with the end of the driving shaft 53. The driving shaft 53 and the driven shaft 51 are drivingly connected through a belt pulley set 532. The temperature guiding groove 54 is arranged in the moving seat 4. The temperature guiding pipe 541 is fixedly connected on the bottom of the inner cavity of the positioning cylinder 41. The bottom end of the temperature guiding pipe 541 penetrates to the lower side of the positioning cylinder 41. The bottom end of the positioning cylinder 41 is communicated with the inner cavity of the temperature guiding groove 54. The side of the temperature guiding box 5, which faces the positioning cylinder 41, is fixedly and communicatedly provided with the heat conducting pipe 542. The other end of the heat conducting pipe 542 is communicated with the inner cavity of the temperature guiding groove 54. The side of the temperature guiding box 5, which is away from the positioning cylinder 41, is provided with the air inlet groove 543.

[0042] Through the above structure, the driving motor 531 is started to drive the driving shaft 53 to rotate. Under the driving action of the belt pulley set 532, the temperature guiding vane 52 rotates in the temperature guiding box 5. The gas around the output end of the temperature control box 1 is sucked into the temperature guiding box 5 and is transported to the temperature guiding groove 54 along the heat conducting pipe 542 and then is transported to the surface-mounted crystal oscillator by the temperature guiding pipe 541. The air flow exchange speed in the detection box 2 is accelerated. The high temperature or low temperature is more quickly transmitted to the surface-mounted crystal oscillator. The temperature adjusting time is reduced. The test efficiency is improved.

[0043] Referring to Figure 2 , Figure 6 and Figure 7 The vibration assembly comprises two groups of vibration boxes 6, which are fixed on the two sides of the detection table 21. The piston plate 61 is slidingly connected in the vibration box 6. The spring telescopic rod 62 is fixedly connected on the inner side wall of the piston plate 61. The push-pull rod 63 is rotatably connected on the outer side wall of the piston plate 61. The linkage rod 64 is rotatably connected on the top of the two sides of the detection box 2. The worm wheel 641 is fixedly connected on the linkage rod 64. The worm 642 is fixedly connected on the driving shaft 53. The worm 642 and the worm wheel 641 are drivingly engaged. The turntable 643 is fixedly connected on the bottom end of the linkage rod 64. The other end of the push-pull rod 63 is rotatably connected on the bottom of the turntable 643.

[0044] Through the arrangement of the above structure, in the process of rotating the main shaft 53, the meshing transmission between the worm 642 and the worm gear 641 drives the linkage rod 64 and the rotating disc 643 to rotate, at this time, the rotating disc 643 repeatedly pushes and pulls the push-pull rod 63, and the piston plate 61 moves towards the side wall of the detection table 21, and the spring telescopic rod 62 hits the side wall of the detection table 21, thereby generating a slight vibration on the detection table 21, and further simulating a more realistic use environment of the surface-mounted crystal oscillator, effectively evaluating the stability and reliability of the surface-mounted crystal oscillator under this condition, and improving the representativeness of the test results.

[0045] With reference to Figures 3-8 The detection table 21 is internally provided with an adsorption groove 7, a plurality of adsorption holes 71 are formed in the top of the adsorption groove 7, the side wall of the vibration box 6 is fixedly provided with an air suction pipe 72 which is in communication, one end of the air suction pipe 72 is communicated with the inner cavity of the adsorption groove 7, and a one-way valve is arranged in the air suction pipe 72; the moving seat 4 is internally provided with an inflation groove 73 which is communicated with the inner cavity of the positioning cylinder 41, the two sides of the positioning cylinder 41 are fixedly provided with air guide pipes 74 which are in communication, one end of the air guide pipe 74 is communicated with the inner cavity of the telescopic cylinder 414, the two groups of vibration boxes 6 are fixedly provided with an inflation pipe 75 which is in communication, one end of the inflation pipe 75 is communicated with the inflation groove 73, and a one-way valve is arranged in the inflation pipe 75.

[0046] It should be noted that the one-way valve in the air suction pipe 72 can only make the gas in the adsorption groove 7 enter the vibration box 6; the one-way valve in the inflation pipe 75 can only make the gas in the vibration box 6 enter the positioning cylinder 41 and the telescopic cylinder 414.

[0047] Through the arrangement of the above structure, when the piston plate 61 slides towards the side of the detection table 21, the piston plate 61 compresses the gas in the vibration box 6, and opens the one-way valve in the inflation pipe 75, so that the gas enters the inflation groove 73 along the inflation pipe 75, and then enters the positioning cylinder 41 from the inflation groove 73, and part of the gas entering the positioning cylinder 41 enters the telescopic cylinder 414 along the air guide pipe 74, so that under the action of the increased gas pressure, the positioning pressing rod 413 and the electric contact probe 415 are pushed downward, thereby improving the extrusion and fixation effect of the surface-mounted crystal oscillator, and making the electric contact probe 415 and the electric contact end more closely attached, and effectively improving the test precision; then, when the push-pull rod 63 drives the piston plate 61 to slide back, suction is generated in the vibration box 6, thereby opening the one-way valve in the air suction pipe 72, so that the gas in the adsorption groove 7 is sucked out, thereby reducing the gas pressure in the adsorption groove 7, and the circuit board with the surface-mounted crystal oscillator is adsorbed and fixed on the top of the detection table 21, thereby further improving the stability of the surface-mounted crystal oscillator during detection, and ensuring the detection effect.

[0048] With reference to Figure 8The movable seat 4 side wall is fixedly connected with a pressure discharge pipe 8, the pressure discharge pipe 8 is communicated with the cavity of the inflation groove 73, and the electromagnetic valve is arranged in the pressure discharge pipe 8; the electromagnetic valve in the pressure discharge pipe 8 can discharge the airflow continuously filled in the inflation groove 73, and the high pressure effect in the inflation groove 73 is released, so that the surface-mounted crystal oscillator is taken out.

[0049] Embodiment two:

[0050] Referring to Figures 1-8 , basically same as embodiment one, on the basis of embodiment one, a kind of surface-mounted crystal oscillator high-low temperature automatic test method is proposed, as follows:

[0051] Step one: the circuit board with surface-mounted crystal oscillator is placed to detection table 21;

[0052] Step two: the surface-mounted crystal oscillator is communicated between detection instrument 3;

[0053] Step three: the test temperature in detection box 2 is changed by temperature control box 1;

[0054] Step four: in the process of temperature change, the gas in detection box 2 is moved to the detection area of detection table 21, realizes rapid temperature change;

[0055] Step five: in the process of testing, slight vibration is applied to detection table 21;

[0056] Step six: the test result of surface-mounted crystal oscillator in high-low temperature environment is obtained by observing relevant data on detection instrument 3, to judge the quality of surface-mounted crystal oscillator.

[0057] Referring to Figures 1-8 , in the application, first, the circuit board with surface-mounted crystal oscillator is placed to detection table 21, then movable seat 4 is pulled, and it is slid along longitudinal slide rail 42 and longitudinal slide plate 421, positioning cylinder 41 is adjusted to the top of surface-mounted crystal oscillator, and positioning pressure rod 413 is abutted on the top of surface-mounted crystal oscillator, so that positioning before testing is realized, then two side power connection probes 415 are rotated, and they are aligned with power connection end on both sides of surface-mounted crystal oscillator, so that surface-mounted crystal oscillator is placed in the test circuit communicated with detection instrument 3, and under the rebound action of first spring 412 and second spring 416, surface-mounted crystal oscillator is extruded and fixed, and power connection probe 415 is tightly combined with power connection end, so that the adverse effect of poor circuit contact on test result is effectively avoided, and the accuracy of detection result is ensured.

[0058] Subsequently, the detection box 2 is closed, the inside environment of the detection box 2 is heated (high temperature) or refrigerated (low temperature) by the temperature control box 1, the automatic detection of high and low temperature is realized, the convenience of testing is improved, at the same time, the driving motor 531 is started, the driving shaft 53 is driven to rotate, under the transmission of the belt pulley set 532, the temperature guide blade 52 is rotated in the temperature guide box 5, the gas around the output end of the temperature control box 1 is sucked into the temperature guide box 5, and is transported to the temperature guide groove 54 along the heat conduction pipe 542, and then is transported to the surface-mounted crystal oscillator by the temperature guide pipe 541, so that the air flow exchange speed in the detection box 2 is accelerated, the high temperature or low temperature effect is quickly and rapidly transmitted to the surface-mounted crystal oscillator, and the time required for temperature adjustment is reduced, and the test efficiency is improved.

[0059] In addition, in the process of rotating the driving shaft 53, the meshing transmission between the worm 642 and the worm gear 641 drives the linkage rod 64 and the rotating disc 643 to rotate, at this time, the rotating disc 643 repeatedly pushes and pulls the push-pull rod 63 with the piston plate 61, when the piston plate 61 moves to the side wall of the detection table 21, the spring telescopic rod 62 hits the side wall of the detection table 21, so that a slight vibration effect is generated on the detection table 21, and the more realistic use environment of the surface-mounted crystal oscillator is simulated, the stability and reliability of the surface-mounted crystal oscillator under this condition are effectively evaluated, and the representativeness of the test result is improved; and in this process, the piston plate 61 compresses the gas in the vibration box 6, and opens the one-way valve in the inflation pipe 75, so that the gas enters the inflation groove 73 along the inflation pipe 75, and then enters the positioning cylinder 41 from the inflation groove 73, and part of the gas entering the positioning cylinder 41 enters the telescopic cylinder 414 along the gas guide pipe 74, so that the positioning pressure rod 413 and the electric contact probe 415 are pushed down under the action of the increased gas pressure, so that the compression and fixation effect of the surface-mounted crystal oscillator is improved, and the electric contact probe 415 and the electric contact end are more closely attached, and the test precision is effectively improved; then, when the push-pull rod 63 drives the piston plate 61 to reset and slide, suction is generated in the vibration box 6, so that the one-way valve in the suction pipe 72 is opened, and the gas in the suction groove 7 is sucked out, so that the gas pressure in the suction groove 7 is reduced, and the circuit board with the surface-mounted crystal oscillator is adsorbed and fixed on the top of the detection table 21, so that the stability of the surface-mounted crystal oscillator during detection is further improved, and the detection effect is ensured.

[0060] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An automated high and low temperature testing device for surface-mount crystal oscillators, comprising a temperature control chamber (1), a testing chamber (2) fixed on top of the temperature control chamber (1), and a testing instrument (3) fixed on top of the testing chamber (2), characterized in that, The bottom of the inner cavity of the testing box (2) is fixedly connected to a testing platform (21), and also includes: The movable seat (4) is installed inside the detection box (2). The bottom of the movable seat (4) is fixedly connected to a positioning cylinder (41), and the detection box (2) is provided with an adjustment part for adjusting the position of the movable seat (4); Temperature-conducting component, which is installed inside the detection box (2), is used to quickly push the temperature of the temperature control box (1) into the detection box (2) to the detection area; Vibration assembly, which is installed inside the detection box (2), is used to apply vibration to the detection table (21) during the detection process; A positioning pressure plate (411) is slidably connected inside the positioning cylinder (41). A first spring (412) is fixedly connected between the top of the positioning pressure plate (411) and the top of the inner part of the positioning cylinder (41). A positioning pressure rod (413) is fixedly connected to the bottom of the positioning pressure plate (411). The positioning pressure rod (413) extends through to the bottom of the positioning cylinder (41). Two sets of telescopic cylinders (414) are rotatably connected to the outer wall of the positioning pressure rod (413). An electrical probe (415) is slidably connected inside the telescopic cylinder (414). A second spring (416) is fixedly connected between the top of the electrical probe (415) and the top of the inner part of the telescopic cylinder (414). The adjustment unit includes a longitudinal slide rail (42), a longitudinal slide plate (421) is slidably connected inside the longitudinal slide rail (42), a guide slide rod (422) is fixedly connected inside the longitudinal slide plate (421), and the movable seat (4) is slidably sleeved on the guide slide rod (422); The temperature-conducting assembly includes two sets of temperature-conducting boxes (5), which are respectively fixed on both sides of the inner cavity of the detection box (2). A driven shaft (51) is rotatably connected inside the temperature-conducting box (5), and a temperature-conducting blade (52) is fixedly connected on the driven shaft (51). One end of the driven shaft (51) passes through the temperature-conducting box (5) and is rotatably connected to the inner wall of the detection box (2). A drive shaft (53) is rotatably connected inside the detection box (2), and a drive motor (531) is fixedly connected to the outer wall of the detection box (2). The output shaft of the drive motor (531) is fixedly connected to the end of the drive shaft (53), and the drive shaft (53) and the driven shaft (51) are connected by a pulley group (532). The movable seat (4) has a temperature-conducting groove (54) inside. The bottom of the inner cavity of the positioning cylinder (41) is fixedly connected to a temperature-conducting pipe (541). The bottom end of the temperature-conducting pipe (541) extends through to the bottom of the positioning cylinder (41). The bottom end of the positioning cylinder (41) is connected to the inner cavity of the temperature-conducting groove (54). The temperature-conducting box (5) is fixed to the side facing the positioning cylinder (41) and connected to a heat-conducting pipe (542). The other end of the heat-conducting pipe (542) is connected to the inner cavity of the temperature-conducting groove (54). An air inlet groove (543) is opened on the side of the temperature-conducting box (5) away from the positioning cylinder (41). The vibration assembly includes two sets of vibration boxes (6), which are fixed on both sides of the testing platform (21). A piston plate (61) is slidably connected inside the vibration box (6). A spring telescopic rod (62) is fixedly connected to the inner side wall of the piston plate (61). A push-pull rod (63) rotates on the outer side wall of the piston plate (61). A linkage rod (64) is rotatably connected to both sides of the top of the testing box (2). A worm gear (641) is fixedly connected to the linkage rod (64). A worm (642) is fixedly connected to the drive shaft (53). The worm (642) meshes with the worm gear (641). A turntable (643) is fixedly connected to the bottom end of the linkage rod (64). The other end of the push-pull rod (63) is rotatably connected to the bottom of the turntable (643). The detection platform (21) has an adsorption tank (7) inside. The top of the adsorption tank (7) has multiple adsorption holes (71). The side wall of the vibration box (6) is fixed and connected to a suction pipe (72). The other end of the suction pipe (72) is connected to the inner cavity of the adsorption tank (7). A one-way valve is installed inside the suction pipe (72). An inflation slot (73) is provided inside the movable seat (4). The inflation slot (73) is connected to the inner cavity of the positioning cylinder (41). The two sides of the positioning cylinder (41) are fixed and connected to air guide pipes (74). The other end of the air guide pipe (74) is connected to the inner cavity of the telescopic cylinder (414). The two sets of vibration boxes (6) are fixed and connected to an inflation pipe (75). The other end of the inflation pipe (75) is connected to the inflation slot (73). A one-way valve is provided inside the inflation pipe (75).

2. The surface-mount crystal oscillator high and low temperature automated testing device according to claim 1, characterized in that, A pressure relief pipe (8) is fixedly connected to the side wall of the movable seat (4). The pressure relief pipe (8) is connected to the inner cavity of the air filling groove (73), and a solenoid valve is installed inside the pressure relief pipe (8).

3. A method for automated high and low temperature testing of surface-mount crystal oscillators, employing the automated high and low temperature testing device for surface-mount crystal oscillators as described in any one of claims 1 or 2, characterized in that, The steps are as follows: Step 1: Place the circuit board with the surface-mount crystal oscillator onto the testing station (21); Step 2: Connect the surface-mount crystal oscillator to the detector (3); Step 3: Change the test temperature inside the detection chamber (2) using the temperature control chamber (1); Step 4: During the temperature change process, the gas inside the detection chamber (2) is pushed to move towards the detection area of ​​the detection platform (21) to achieve rapid temperature change; Step 5: During the test, apply vibration to the testing platform (21); Step 6: By observing the relevant data on the tester (3), obtain the test results of the surface-mount crystal oscillator under high and low temperature environments, and then judge the quality of the surface-mount crystal oscillator.

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