A crystal oscillator testing lifting mechanism

Abstract

This utility model discloses a crystal oscillator testing lifting mechanism, including a turntable, a reducer, a lifting tube, and a drive motor. The reducer is connected to the turntable to drive its rotation. The turntable has multiple positioning fixtures distributed circumferentially to support the crystal oscillator products. An eccentric wheel is located at the output end of the drive motor. A testing mechanism is located at the top of the lifting tube, and a transmission body is connected to its bottom end. The eccentric wheel acts on the transmission body to drive the lifting tube and the testing mechanism to reciprocate up and down, thereby enabling the testing of the products carried on the turntable. This provides a novel, compact, and efficient crystal oscillator testing lifting mechanism. It aims to achieve precise and rapid lifting of the testing probe through a simplified mechanical transmission structure, and integrates a rotary gas distribution and airflow distribution structure to reduce unnecessary gas source waste. This solves the problems of complex structure, large space occupation, insufficient motion accuracy and stability, and cumbersome air path system of traditional equipment, thereby improving testing efficiency, accuracy, and reliability.

Description

Technical Field

[0001] This utility model relates to the field of automated testing technology for electronic components, specifically to a crystal oscillator testing lifting mechanism. Background Technology

[0002] In the production process of crystal oscillators, electrical performance testing is required. Traditional testing methods often rely on manual operation or single-station testing equipment, resulting in low efficiency and poor consistency. To improve testing efficiency, existing technologies often employ multi-station rotary platforms in conjunction with testing mechanisms for automated testing. However, existing testing lifting mechanisms often use cylinders or complex linkages, which occupy a large space, have slow motion response, and affect testing accuracy and product safety. Furthermore, when traditional equipment performs product adsorption and fixation and air blowing demolding on the rotary station, it often requires rotary air connectors and complex pipelines to achieve air path connectivity, resulting in complex structures, high costs, insufficient reliability, and difficult maintenance.

[0003] Therefore, there is an urgent need for a crystal oscillator detection lifting mechanism that is compact, precise in motion, highly efficient and reliable, and integrates pneumatic control functions, in order to solve the problems of slow detection cycle, low space utilization, cumbersome pneumatic system and inconvenient maintenance in the existing technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a novel, compact, and efficient crystal oscillator testing lifting mechanism. This lifting mechanism aims to achieve precise and rapid lifting of the testing probe through a simplified mechanical transmission structure, and integrates a rotary gas distribution and airflow allocation structure. This solves the problems of complex structure, large space occupation, insufficient motion accuracy and stability, and cumbersome gas path system in traditional equipment, thereby improving testing efficiency, accuracy, and equipment reliability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A crystal oscillator testing lifting mechanism includes a turntable, a reducer, a lifting tube, and a drive motor. The reducer is connected to the turntable to drive its rotation. The turntable is provided with multiple positioning fixtures distributed circumferentially for carrying crystal oscillator products. The output end of the drive motor is provided with an eccentric wheel. The top end of the lifting tube is provided with a testing mechanism, and its bottom end is connected to a transmission body. The eccentric wheel acts on the transmission body to drive the lifting tube and the testing mechanism to move up and down reciprocally, thereby realizing the testing of the products carried on the turntable.

[0006] Furthermore, the detection mechanism includes a mounting base, a connecting plate, and a fixture head. The mounting base is fixedly connected to the top of the lifting pipe. One end of the connecting plate is fixedly connected to the mounting base, and the other end is fixedly connected to the fixture head. The fixture head is equipped with a detection probe.

[0007] Furthermore, the testing mechanism includes multiple mounting bases, connecting plates, and fixture heads arranged side by side.

[0008] Furthermore, it also includes a sleeve, which is vertically inserted into and fixed inside the reducer, and the lifting tube is slidably inserted into the sleeve.

[0009] Furthermore, it also includes a spring and a pad sleeve fitted on the lifting tube, wherein the upper end of the spring abuts against the bottom of the pad sleeve and the lower end abuts against the upper part of the transmission body.

[0010] Furthermore, it also includes a pressure plate and a vent plate, which are sequentially sleeved on the outside of the sleeve, and the vent plate is fixedly connected to the turntable; the bottom surface of the pressure plate is provided with a pressure groove, and the vent plate is provided with a plurality of through holes distributed along the circumference, and the through holes can periodically connect or disconnect with the pressure groove through the rotational movement of the vent plate relative to the pressure plate.

[0011] Furthermore, the air pressure plate is provided with a first air inlet, a second air inlet, and a third air inlet, and the air pressure groove is a semi-arc groove that communicates with the first air inlet and the second air inlet.

[0012] Furthermore, the turntable has multiple airflow channels distributed circumferentially inside, with one end of each airflow channel connected to a through hole on the ventilation plate and the other end connected to a corresponding positioning fixture.

[0013] Furthermore, it also includes a guide mechanism disposed on one side of the transmission body. The guide mechanism includes a slide rail, a slider, and a connecting block. The slide rail is vertically disposed on one side of the transmission body. The slider is slidably connected to the slide rail. The connecting block is connected to the side of the slider away from the slide rail and is used for fixed connection with the frame.

[0014] Compared with existing technologies, the technical solution of this patent achieves the following beneficial effects: 1. A drive motor directly drives the eccentric wheel, which in turn drives the transmission body and the lifting tube, replacing the traditional cylinder or complex linkage drive. The entire structure is compact and simple, effectively reducing the space occupied on the upper part of the turntable and effectively improving the detection cycle time and reliability.

[0015] 2. The springs and pads installed on the lifting tube form an elastic buffer structure, which provides flexible contact pressure when the detection mechanism presses down, avoiding damage to the crystal oscillator product from rigid impacts, while ensuring the stability of the detection electrical contact.

[0016] 3. An integrated rotary air distribution structure is constructed using relatively rotating pressure plates and ventilation plates. Combined with the airflow channels inside the turntable, this achieves automated airflow control for adsorption, fixation, and blow-out demolding of products at each station on a multi-station rotary platform. This design eliminates the need for numerous independent solenoid valves and external pipelines, while reducing unnecessary air source waste. It features a compact structure and high synchronization between airflow switching and mechanical movement.

[0017] 4. The semi-circular air pressure groove and independent third air inlet on the air pressure plate realize the physical separation and precise timing control of the two airflow functions of adsorption fixation (negative pressure) and blowing demolding (positive pressure) within one rotation cycle, without interference between them, and the process is highly automated. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the crystal oscillator detection lifting mechanism of this utility model; Figure 2 This is a three-dimensional structural diagram of the crystal oscillator detection lifting mechanism of this utility model; Figure 3 This is a side view of the crystal oscillator detection lifting mechanism of this utility model. Figure 4 This is a cross-sectional structural schematic diagram of the crystal oscillator detection lifting mechanism of this utility model; Figure 5 This is a schematic diagram showing the disassembled assembly structure of the crystal oscillator detection lifting mechanism of this utility model; Figure 6 This is a bottom view of the structure of the pneumatic plate of this utility model; Figure 7 This is a top view of the ventilation panel of this utility model. Figure 8 This is a top view of the turntable structure of this utility model; Figure 9 This is a cross-sectional structural diagram of the assembly of the turntable and positioning fixture of this utility model; Figure 10 This is a three-dimensional structural diagram of the assembly of the lifting pipe and the detection mechanism of this utility model.

[0019] In the diagram: 1. Turntable; 101. Airflow channel; 2. Reducer; 3. Lifting pipe; 4. Drive motor; 41. Eccentric wheel; 5. Positioning fixture; 6. Detection mechanism; 61. Mounting base; 62. Connecting plate; 63. Fixture head; 64. Detection probe; 7. Sleeve; 8. Spring; 9. Transmission body; 10. Gasket; 11. Air pressure plate; 111. Air pressure groove; 112. First air inlet; 113. Second air inlet; 114. Third air inlet; 12. Vent plate; 121. Through hole; 13. Slide rail; 14. Slider; 15. Connecting block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 10 As shown, this embodiment provides a crystal oscillator testing lifting mechanism, including a turntable 1, a reducer 2, a lifting tube 3, and a drive motor 4. The reducer 2 is connected to the turntable 1 to drive its rotation, and the reducer 2 is fixedly mounted on a frame (not shown in the figure). The turntable 1 has multiple circumferentially distributed positioning fixtures 5 for carrying crystal oscillator products. The drive motor 4 is fixedly mounted on the frame and located below the turntable 1, reducing the space occupied on the upper part of the turntable 1. The output end of the drive motor 4 has an eccentric wheel 41. The lifting tube 3 is a T-shaped tube with a boss at its top for setting the testing mechanism 6 for the tested product, and its bottom end is connected to a transmission body 9. The eccentric wheel 41 acts on the transmission body 9, and the outer edge of the eccentric wheel 41 contacts the bottom of the transmission body 9 to drive the lifting tube 3 and the testing mechanism 6 to reciprocate up and down, thereby realizing the testing of the product carried on the turntable 1. By setting the eccentric wheel 41 driven by the drive motor 4 and making it directly act on the transmission body 9 connected to the bottom end of the lifting tube 3, a simple and efficient direct-drive lifting mechanism is constructed. This structural design reduces the space occupied on the upper part of the turntable 1 and the complexity of maintenance, and enables the detection mechanism 6 to move up and down quickly and accurately, thereby improving the detection cycle time and reliability.

[0022] The crystal oscillator testing lifting mechanism also includes a sleeve 7, which is vertically inserted into a specially designed mounting hole in the reducer 2 and fixedly connected to the reducer 2 housing. The lifting tube 3 can slide up and down inside the sleeve 7. By setting the sleeve 7, the lifting tube 3 can slide within it, solving the problem of radial sway and wobble of the lifting tube 3 during high-speed reciprocating motion. This structure not only provides precise linear guidance for the lifting tube 3, ensuring the accuracy of the alignment between the testing probe 64 and the product, but also cleverly utilizes the internal space of the reducer 2, achieving a compact and integrated structure.

[0023] The crystal oscillator testing lifting mechanism also includes a spring 8 and a pad 10 sleeved on the lifting tube 3. The upper end of the spring 8 abuts against the bottom of the pad 10, and the lower end abuts against the upper part of the transmission body 9. By sleeved the spring 8 and the pad 10 on the lifting tube 3, and with the two ends of the spring 8 abutting against the pad 10 and the transmission body 9 respectively, the problem of rigid impact or uneven pressure on the product when the testing mechanism 6 presses down is solved. The spring 8 provides the necessary buffer and flexible contact pressure, ensuring that the testing probe 64 can stably and gently contact the product, thus protecting the product and improving the testing stability.

[0024] The crystal oscillator testing lifting mechanism also includes a pressure plate 11 and a ventilation plate 12. The pressure plate 11 and ventilation plate 12 are sequentially sleeved on the outside of the sleeve 7, and the ventilation plate 12 is fixedly connected to the turntable 1. The pressure plate 11 is fixedly connected to the frame through a bracket and remains stationary. The bottom surface of the pressure plate 11 is provided with a pressure groove 111, and the ventilation plate 12 is provided with multiple circumferentially distributed through holes 121. Through the rotational movement of the ventilation plate 12 relative to the pressure plate 11, the through holes 121 can periodically connect or disconnect with the pressure groove 111. By setting the relatively rotating pressure plate 11 and ventilation plate 12, and the cooperation between the pressure groove 111 and the circumferential through holes 121, this structure solves the problem of traditionally requiring additional complex pipelines to achieve the adsorption and blowing functions of the rotating station. It achieves the periodic opening and closing of the air path through a purely mechanical structure, greatly simplifying the structure, reducing costs, and improving the reliability and synchronization of air path switching.

[0025] like Figure 4 , Figure 6 As shown, the air pressure plate 11 is provided with a first air inlet 112, a second air inlet 113, and a third air inlet 114. The air pressure groove 111 is a semi-circular groove and communicates with the first air inlet 112 and the second air inlet 113. By designing the air pressure groove 111 as a semi-circular groove and making it simultaneously communicate with the first and second air inlets, while independently setting the third air inlet 114, the problem of needing to achieve two different airflow functions—adsorption fixation and blowing demolding—within one rotation cycle is solved. The semi-circular groove allows for continuous adsorption of the product within most rotation angles, while the third air inlet 114 provides positive pressure airflow at a specific angle, realizing an automated process where the two functions do not interfere with each other.

[0026] like Figure 4 , Figures 8 to 9 As shown, the turntable 1 has multiple circumferentially distributed airflow channels 101 inside. One end of each airflow channel 101 is connected to a through hole 121 on the ventilation plate 12, and the other end is connected to the corresponding positioning fixture 5. This realizes automated airflow control for adsorption fixation and air blowing demolding of products at each station on a multi-station rotary platform.

[0027] like Figure 3As shown, the crystal oscillator testing lifting mechanism also includes a slide rail 13, a slider 14, and a connecting block 15. The slide rail 13 is vertically arranged on one side of the transmission body 9. The slider 14 is slidably connected to the slide rail 13. The connecting block 15 is connected to the side of the slider 14 away from the slide rail 13 and is used for fixed connection with the external frame. By setting a guide mechanism consisting of the slide rail 13, the slider 14, and the connecting block 15 fixed to the external frame on one side of the transmission body 9, the problem that the single-point guidance of the sleeve 7 may not be enough to completely offset the lateral force generated by the eccentric wheel 41 drive, resulting in the lifting tube 3 not moving straight enough, is solved. This auxiliary guide mechanism forces the transmission body 9 to move only in the vertical direction, ensuring the straightness of the movement of the lifting tube 3 and the testing mechanism 6, thereby ensuring the high accuracy of the testing position.

[0028] like Figure 10 As shown, the testing mechanism 6 includes a mounting base 61, a connecting plate 62, and a fixture head 63. The mounting base 61 is fixedly connected to the top of the lifting tube 3. One end of the connecting plate 62 is fixedly connected to the mounting base 61, and the other end is fixedly connected to the fixture head 63. The fixture head 63 is equipped with testing probes 64. In other embodiments, the testing mechanism 6 can adopt a parallel modular structure including multiple mounting bases 61, multiple connecting plates 62, and multiple fixture heads 63. This design allows a single lifting motion to drive multiple testing probes 64 to press down synchronously, enabling parallel testing of multiple products on the turntable 1 with different electrical parameters at one time, thus significantly improving testing efficiency. At the same time, the modular fixture head 63 is easy to replace or adjust independently, greatly improving the flexibility and maintenance convenience of the equipment to adapt to the testing of different product models.

[0029] Working principle of this crystal oscillator detection lifting mechanism: When the equipment is working, the drive motor 4 drives the eccentric wheel 41 to rotate continuously. The eccentric wheel 41 periodically pushes the transmission body 9, driving the lifting tube 3 and its top-mounted detection mechanism 6 to reciprocate up and down at a fixed frequency and stroke. When the lifting tube 3 descends, the detection probe 64 moves downward to perform electrical performance testing on the crystal oscillator product located directly below it. Simultaneously, the reducer 2 drives the turntable 1 to perform intermittent indexing motion. Each time the detection mechanism 6 completes a test and rises to its highest position, the turntable 1 rotates by one station angle, sending the next product to be tested to the testing station, until all tested products are removed.

[0030] The airflow control process is as follows: the first air inlet 112 and the second air inlet 113 are connected to a negative pressure air source through external pipelines, and the third air inlet 114 is connected to a positive pressure air source. When the turntable 1 rotates, the ventilation plate 12 rotates accordingly. Within most of the rotation angles, some of the through holes 121 on the ventilation plate 12 are aligned with the semi-circular air pressure groove 111 area at the bottom of the air pressure plate 11, thereby transmitting negative pressure to the corresponding positioning fixture 5 through the airflow channel 101, firmly adsorbing and fixing the product on it, ensuring fixation during handling and inspection. When a product that has completed inspection rotates with the turntable 1 to a specific unloading station, the through hole 121 on the corresponding ventilation plate 12 rotates to the position opposite to the third air inlet 114 on the air pressure plate 11. At this time, the positive pressure airflow passes through the through hole 121 and the airflow channel 101, reaching the corresponding positioning fixture 5, forming an upward blowing force, which slightly blows up or pushes out the adsorbed product, making it easier for the subsequent robot or conveying mechanism to pick it up, realizing automatic unloading of the product.

Claims

1. A crystal oscillator detection lifting mechanism, characterized in that, The device includes a turntable (1), a reducer (2), a lifting tube (3), and a drive motor (4). The reducer (2) is connected to the turntable (1) to drive it to rotate. The turntable (1) is provided with multiple positioning fixtures (5) distributed circumferentially to support crystal oscillator products. The output end of the drive motor (4) is provided with an eccentric wheel (41). The top end of the lifting tube (3) is provided with a detection mechanism (6), and its bottom end is connected to a transmission body (9). The eccentric wheel (41) acts on the transmission body (9) to drive the lifting tube (3) and the detection mechanism (6) to move up and down, thereby realizing the detection of the products carried on the turntable (1).

2. The crystal oscillator detection lifting mechanism according to claim 1, characterized in that, The detection mechanism (6) includes a mounting base (61), a connecting plate (62), and a fixture head (63). The mounting base (61) is fixedly connected to the top of the lifting pipe (3). One end of the connecting plate (62) is fixedly connected to the mounting base (61), and the other end is fixedly connected to the fixture head (63). The fixture head (63) is provided with a detection probe (64).

3. The crystal oscillator detection lifting mechanism according to claim 1, characterized in that, The testing mechanism (6) includes multiple mounting bases (61), connecting plates (62), and jig heads (63) arranged side by side.

4. The crystal oscillator detection lifting mechanism according to claim 1, characterized in that, It also includes a sleeve (7), which is vertically inserted into and fixed inside the reducer (2), and the lifting tube (3) is slidably inserted into the sleeve (7).

5. The crystal oscillator detection lifting mechanism according to claim 4, characterized in that, It also includes a spring (8) and a pad (10) sleeved on the lifting tube (3), the upper end of the spring (8) abutting the bottom of the pad (10) and the lower end abutting the upper part of the transmission body (9).

6. The crystal oscillator detection lifting mechanism according to claim 4, characterized in that, It also includes a pressure plate (11) and a vent plate (12), which are sequentially sleeved on the outside of the sleeve (7), and the vent plate (12) is fixedly connected to the turntable (1); the bottom surface of the pressure plate (11) is provided with a pressure groove (111), and the vent plate (12) is provided with a plurality of through holes (121) distributed along the circumference. The through holes (121) can periodically connect or disconnect with the pressure groove (111) by the rotational movement of the vent plate (12) relative to the pressure plate (11).

7. The crystal oscillator detection lifting mechanism according to claim 6, characterized in that, The air pressure plate (11) is provided with a first air inlet (112), a second air inlet (113) and a third air inlet (114), and the air pressure groove (111) is a semi-arc groove and is connected to the first air inlet (112) and the second air inlet (113).

8. The crystal oscillator detection lifting mechanism according to claim 7, characterized in that, The turntable (1) has multiple airflow channels (101) distributed circumferentially inside. One end of each airflow channel (101) is connected to the through hole (121) on the ventilation plate (12), and the other end is connected to the corresponding positioning fixture (5).

9. The crystal oscillator detection lifting mechanism according to claim 1, characterized in that, It also includes a guide mechanism disposed on one side of the transmission body (9). The guide mechanism includes a slide rail (13), a slider (14) and a connecting block (15). The slide rail (13) is vertically disposed on one side of the transmission body (9). The slider (14) is slidably connected to the slide rail (13). The connecting block (15) is connected to the side of the slider (14) away from the slide rail (13) and is used to fix it to the frame.

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