A device for preventing material from being carried over during sealing of a crystal oscillator

Abstract

The utility model relates to a structure for sealing and welding crystal vibration product, a device for preventing material from being taken away during sealing and welding of crystal vibration, which comprises a support, a sealing and welding structure is fixed on the support, the sealing and welding structure comprises sealing and welding electrode heads, a pressing piece is arranged between the two sealing and welding electrode heads, the pressing piece is fixed on a pressing piece fixing block, a reset structure is arranged on the pressing piece fixing block, the reset structure is installed on a mounting support, and the pressing piece fixing block and the pressing piece abut on the upper surface of the crystal vibration product through gravity. The utility model provides a device for preventing material from being taken away during sealing and welding of crystal vibration, which can effectively prevent the product from being taken away during resistance welding, effectively ensure the sealing and welding effect, and improve the yield. The utility model solves the technical problem that the crystal vibration product is easily taken away during sealing and welding, resulting in cost waste and long-term shutdown maintenance.

Description

Technical Field

[0001] This utility model relates to a structure used in the sealing and soldering of crystal oscillators, and more particularly to a device for preventing material from being carried over during the sealing and soldering of crystal oscillators. Background Technology

[0002] Currently, there are two main packaging methods for crystal oscillators. One method involves using a metal cap and resistance welding. Resistance welding is used to encapsulate metal-packaged products. It involves applying pressure to the workpiece while simultaneously applying current, utilizing the Joule heat generated by the contact resistance between the electrodes to melt the metal. This method requires a sealed environment for stable performance; poor sealing can cause frequency drift or prevent oscillation altogether. The other method uses glass glue and a high-temperature tunnel furnace for soldering. With the trend towards miniaturization in the crystal oscillator industry and the adoption of thinner designs (such as SMD packaging), the outer casing (metal cap or base) is lighter and less rigid. This makes the electrodes susceptible to adhesion or sticking during resistance welding, leading to product displacement and poor packaging. This results in wasted costs and prolonged downtime for equipment maintenance. Summary of the Invention

[0003] This utility model provides an anti-material-carrying device for crystal oscillator sealing, which can effectively prevent the product from being carried up during resistance welding, effectively ensure the sealing effect, and improve the yield. It solves the technical problem in the prior art that crystal oscillator products are easily carried up during sealing, resulting in cost waste and long-term downtime for maintenance.

[0004] The above-mentioned technical problem of this utility model is solved by the following technical solution: A device for preventing material from being carried over during crystal oscillator sealing includes a bracket, on which a sealing structure is fixed. The sealing structure includes sealing electrode heads, and a pressure plate is provided between two sealing electrode heads. The pressure plate is fixed to a pressure plate fixing block, and a reset structure is provided on the pressure plate fixing block. The reset structure is mounted on a mounting bracket, and the pressure plate and the pressure plate are pressed against the upper surface of the crystal oscillator product by gravity. The crystal oscillator product has limited force-bearing capacity, and different crystal oscillator products experience different forces during welding. Gravity presses down on the crystal oscillator product, and since the gravity of the pressure fixing block and the pressure plate is limited, the impact on the crystal oscillator product is small. During welding, the crystal oscillator product is held in place by its own weight, preventing poor sealing due to adsorption or adhesion when the sealing electrode heads are lifted. After sealing, the reset structure lifts the pressure plate and the fixing block, the crystal oscillator product is removed, and the next product is then sealed. By using a pressing design, the adhesion or adsorption force on the crystal oscillator products during the sealing process is effectively prevented, thereby improving the product yield and reducing costs.

[0005] Preferably, the reset structure includes a stop post mounted on the pressure plate fixing block, with a fork located below the stop post. The fork is driven by a solenoid valve, which is fixed to a mounting bracket. During sealing, the solenoid valve drives the fork downward, providing sufficient space for the stop post to move downward. Once the sealing is complete, the solenoid valve activates, driving the fork upward, which then presses against the stop post, resetting the pressure plate. The structure is simple and easy to operate.

[0006] Preferably, one end of the shift fork is hinged to the mounting bracket, the valve stem of the solenoid valve abuts against the shift fork near the hinge point, and the open end of the shift fork is located below the two stop posts.

[0007] Preferably, the reset structure further includes a reset spring, one end of which is fixed to the shift fork, and the other end of which is fixed to the fixing plate. This allows the pressure plate to reset when the solenoid valve fails, and also provides a reset assist to the solenoid valve when it is in operation.

[0008] Preferably, the stop pins are two bearings mounted on a column. One end of the column is fixed to the tablet pressing block, and the other end is inserted into a sleeve. The sleeve is fixed to a fixing plate, and the fixing plate is fixed to a frame. The frame is connected to a mounting bracket. This provides an axial movement guide for the tablet pressing motion.

[0009] Preferably, the mounting bracket is further equipped with a guide structure, which includes a guide rod and a guide hole is provided on the pressure plate fixing block, through which the guide rod passes. This ensures the smooth movement of the fixing block.

[0010] Preferably, the support frame and the sealing structure are fixed to the frame.

[0011] Preferably, a limiting protrusion is provided on the lower surface of the mounting bracket, and the limiting protrusion is located above the shift fork. This prevents the shift fork from moving excessively.

[0012] Therefore, the anti-material-carrying device for crystal oscillator sealing of this utility model has the following advantages: It utilizes the gravity of the pressure plate and the pressure plate fixing block to abut the crystal oscillator product, ensuring that the crystal oscillator product is not adsorbed or stuck, affecting its bounce, while also preventing damage to the crystal oscillator product. The reset structure lifts the pressure plate, resulting in high efficiency and good structural stability. Attached Figure Description

[0013] Figure 1 This is a three-dimensional diagram of a device used to prevent material from being carried over during crystal oscillator sealing.

[0014] Figure 2 yes Figure 1 A 3D view with the frame and welded structure removed. Detailed Implementation

[0015] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0016] Example:

[0017] like Figure 1 and 2 As shown, an anti-material-carrying device for crystal oscillator sealing includes a gate-shaped equipment frame 1, a sealing structure fixed on the frame 1, and the sealing structure includes two parallel sealing electrode heads 2. The sealing electrode heads 2 are fixed on a vertical plate 4 via a connecting plate 3, and the vertical plate 4 is fixed on the frame 1.

[0018] A pressure plate 8, parallel to the two sealing electrode heads 2, is installed between them. One end of the pressure plate 8 is fixed to a pressure plate fixing block 10. One end of a column 19 is fixed to the pressure plate fixing block 10. The other end of the column 19 is inserted into a sleeve 18, which is fixed to a fixing plate 17. The fixing plate 17 is fixed to a support frame 6, which is connected to a mounting bracket 7. The upper end of the support frame 6 is fixed to the frame 1 by an L-shaped plate 5.

[0019] Two bearings 12 are installed at the junction of the column 19 and the pressure plate fixing block 10. A shift fork 13 is installed below the bearings 12, with one end of the shift fork 13 hinged to the mounting bracket 7. A solenoid valve 16 is fixed to the mounting bracket 7, with its stem abutting against the shift fork 13. A limit protrusion 15 is installed below the mounting bracket 7 to limit the upward movement of the shift fork 13. One end of a return spring 14 is installed on the side of the shift fork 13, with the other end fixed to the fixing plate 17. A return spring 14 is installed on each side of the shift fork 13.

[0020] A guide hole is provided on the front side of the tablet fixing block 10, and a guide rod 11 is installed on the mounting bracket. The guide rod 11 passes through the guide hole to guide the tablet fixing block.

[0021] At the start of the sealing process, the solenoid valve 16 abuts against the fork, causing the fork 13 to move downwards. The pressure plate 8 and the pressure plate fixing block 10 press against the upper surface of the crystal oscillator product 9 using gravity. The sealing electrode head 2 is used for sealing. After the sealing process is completed, the sealing electrode head 2 is lifted. Due to the pressure formed by the weight of the pressure plate 8 and the pressure plate fixing block 10 on the crystal oscillator product, the crystal oscillator product will not jump due to adhesion or suction. After the sealing process is completed, the solenoid valve engages, and the solenoid valve stem drives the fork upwards. The end of the fork lifts the bearings on both sides of the column, thus lifting the pressure plate and the pressure plate fixing block together. The return springs on both sides of the fork provide a return force for the pressure plate and the pressure plate fixing block, and can also complete the reset action in case of solenoid valve failure.

[0022] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A device for preventing material from being carried over during crystal oscillator sealing, comprising a bracket, on which a sealing structure is fixed, the sealing structure comprising a sealing electrode head, characterized in that: A pressing plate is arranged between the two sealing electrode heads, the pressing plate is fixed on a pressing plate fixing block, a reset structure is arranged on the pressing plate fixing block, the reset structure is installed on a mounting bracket, and the pressing plate fixing block and the pressing plate abut on the upper surface of the crystal product by gravity.

2. The device according to claim 1, characterized in that: The reset structure comprises a stop column installed on the pressing plate fixing block, and a yoke is arranged below the stop column, the yoke is driven by an electromagnetic valve, and the electromagnetic valve is fixed on the mounting bracket.

3. The device according to claim 2, wherein: One end of the yoke is hinged on the mounting bracket, a valve rod of the electromagnetic valve abuts on a position of the yoke close to the hinged point, and an open end of the yoke is located below the two stop columns.

4. The device according to claim 2, wherein: The reset structure further comprises a reset spring, one end of the reset spring is fixed on the yoke, and the other end of the reset spring is fixed on a fixing plate.

5. The device according to claim 2, wherein: The stop column is two bearings installed on a stand column, one end of the stand column is fixed on the pressing plate fixing block, the other end of the stand column is inserted into a sleeve, the sleeve is fixed on the fixing plate, the fixing plate is fixed on a stand, and the stand is connected with the mounting bracket.

6. A device for preventing the carrying of material during the sealing of a crystal oscillator according to any one of claims 1 to 5, characterized in that: A guide structure is further installed on the mounting bracket, the guide structure comprises a guide rod, and a guide hole is arranged on the pressing plate fixing block, the guide rod passes through the guide hole.

7. The device according to any one of claims 1 to 5, characterized in that: The stand and the sealing structure are fixed on a frame.

8. A device for preventing the carrying of material during the sealing of a crystal oscillator according to any one of claims 1 to 5, characterized in that: A limiting protrusion is arranged on the lower surface of the mounting bracket, and the limiting protrusion is located above the yoke.

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