An airtightness detection device for crystal resonators

Abstract

The present invention relates to the technical field of detection equipment, and specifically relates to an airtightness detection device for crystal resonators, including: a frame box, with a sealed chamber arranged inside the frame box; a mounting plate fixedly connected to the frame box; a sealing door arranged on the mounting plate; a hydraulic press fixedly connected to the frame box; a pressing block fixedly connected to the telescopic end of the hydraulic press; a piston plate slidably connected inside the frame box; a feeding plate arranged inside the frame box; and a detection docking head arranged inside the frame box, with the screen display of the detection docking head arranged on the frame box. The present invention uses air pressure to affect the resistance value of crystal resonators with poor airtightness, so that when using the present invention to judge the airtightness result, the result can be directly and visually obtained through the change in the resistance value. The use method of the present invention does not produce negative impacts, and makes the detection operation more convenient and more cost-effective.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly relates to an airtightness detection equipment for crystal resonators. Background Art

[0002] A crystal resonator is an electronic component that utilizes the piezoelectric effect of a crystal wafer to generate a high-precision oscillation frequency, and is usually used in fields such as communication equipment and measuring instruments. During the production process, the airtightness of the outer package of the crystal resonator needs to be detected to ensure that the package can effectively protect the internal crystal wafer and electrodes, thereby ensuring the stability of its output frequency.

[0003] Currently, there are mainly two common airtightness detection methods: the bubble method and the vacuum method. The bubble method is to immerse the crystal resonator in a liquid and observe whether bubbles are generated by pressurization to judge its airtightness. However, this method has some disadvantages: First, it is necessary to process the liquid remaining on the surface of the crystal resonator after detection, increasing additional operation steps; Second, if the airtightness of the crystal resonator is poor, the liquid may penetrate into the interior, resulting in device damage. Another method is the vacuum method, that is, placing the crystal resonator in a vacuum environment and judging its airtightness by detecting gas leakage. Although this method will not have a negative impact on the device, its equipment is complex, the operation requirements are high, and the cost is relatively expensive.

[0004] Therefore, there is an urgent need to design a detection equipment for crystal resonator airtightness detection that neither has a negative impact nor retains simple operation and high cost performance to meet the detection requirements in crystal resonator production. Summary of the Invention

[0005] The present invention provides an airtightness detection equipment for crystal resonators, aiming to solve the defects of the prior art mentioned in the above background art.

[0006] The technical solution is: an airtightness detection equipment for crystal resonators, comprising: a frame box, in which a sealed chamber is arranged;

[0007] A mounting plate fixedly connected to the frame box;

[0008] A sealing door arranged on the mounting plate;

[0009] A hydraulic press fixedly connected to the frame box;

[0010] A pressing block fixedly connected to the telescopic end of the hydraulic press;

[0011] A piston plate slidably connected in the frame box, the piston plate is arranged in the sealed chamber, the pressing block will contact the piston plate to control its movement, and an elastic member is arranged between the piston plate and the frame box;

[0012] The material discharging plate is arranged inside the frame box and is disposed at the bottom of the space of the airtight bin;

[0013] And the detection docking head is arranged inside the frame box, and the screen display of the detection docking head is arranged on the frame box.

[0014] As a preferred technical solution of the present invention, the sealing door is slidably connected to the mounting plate, and an elastic member is provided between the sealing door and the mounting plate;

[0015] It further includes: a first control board slidably connected to the frame box, and the first control board is fixedly connected to the pressing block;

[0016] A first wedge block slidably connected to the mounting plate, the first control board is in contact with the inclined surface of the first wedge block, and an elastic member is provided between the first wedge block and the mounting plate;

[0017] And a second wedge block fixedly connected to the sealing door, and the first wedge block is in contact with the inclined surface of the second wedge block.

[0018] As a preferred technical solution of the present invention, the detection docking head is slidably connected inside the frame box;

[0019] It further includes: a second control board slidably connected to the frame box, and the second control board is fixedly connected to the pressing block;

[0020] A third wedge block slidably connected inside the frame box, the second control board is in contact with the inclined surface of the third wedge block, and an elastic member is provided between the third wedge block and the frame box;

[0021] And a rotating frame rotatably connected inside the frame box, the rotating frame is a telescopic structure, one end of the rotating frame is rotatably connected to the third wedge block, and the other end of the rotating frame is rotatably connected to the detection docking head.

[0022] As a preferred technical solution of the present invention, it further includes: a feeding table fixedly connected to the frame box, and the feeding table leads to the airtight bin;

[0023] A screw rod rotatably connected to the feeding table;

[0024] A material moving frame slidably connected to the feeding table, and the material moving frame is threadedly connected to the screw rod;

[0025] And a first motor fixedly connected to the feeding table, and the output end of the first motor is fixedly connected to the screw rod.

[0026] As a preferred technical solution of the present invention, the material moving frame is arranged in an inverted L shape, and when the material moving frame is controlled to move to the outermost end of the screw rod, the distal end of the material moving frame will push the crystal resonator into the airtight bin.

[0027] As a preferred technical solution of the present invention, the material discharging plate is rotatably connected inside the frame box;

[0028] It further includes: a second motor fixedly connected inside the box, and the output end of the second motor is fixedly connected to the rotating shaft of the material discharging plate;

[0029] and a collection box fixedly connected to the lower part of the frame box, the collection box is located below the material discharging plate, and two partitions are arranged inside the collection box;

[0030] There are two material taking ports on the collection box, respectively corresponding to leading to the two partitions inside the collection box.

[0031] As a preferred technical solution of the present invention, it further includes: a limiting strip fixedly connected to the material discharging plate.

[0032] As a preferred technical solution of the present invention, it further includes: a guiding block fixedly connected inside the frame box.

[0033] Beneficial effects: The present invention uses air pressure to affect the resistance value of a crystal resonator with poor airtightness, so that when using the present invention to judge the airtightness result, the result can be directly and visually obtained through the change of the resistance value. The use method of the present invention has no negative impact, and makes the detection operation more convenient and more cost-effective. Therefore, compared with the prior art, the present invention has a significant technical improvement. By using transmission components, while controlling the movement of the pressing block, the present invention can also control the automatic opening and closing of the sealing door, and the automatic docking of the detection docking head and the crystal resonator, thereby further simplifying the operation steps of the present invention and improving the operation convenience of the present invention. Description of the Drawings

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 It is a sectional view of the connection structure of the pressing block and the piston plate inside the frame box of the present invention.

[0036] Figure 3 It is a schematic diagram of the position structure of the crystal resonator in the sealed chamber of the present invention.

[0037] Figure 4 It is a sectional view of the connection structure of the pressing block, the first control board and the sealing door inside the frame box of the present invention.

[0038] Figure 5 It is a separated view of the connection structure of the first control board and the sealing door of the present invention.

[0039] Figure 6 It is a sectional view of the connection structure of the second control board and the detection docking head inside the frame box of the present invention.

[0040] Figure 7 It is a schematic diagram of the connection structure of the second control board and the detection docking head of the present invention.

[0041] Figure 8 This is a cross-sectional view of the connection structure between the loading table and the material transfer rack in the present invention.

[0042] Figure 9 This is a separated view of the connection structure of the material transfer rack in the present invention.

[0043] Figure 10 This is a cross-sectional view of the connection structure of the material discharging plate in the frame box in the present invention.

[0044] Figure 11 This is a schematic diagram of the state of the material discharging plate after rotation in the present invention.

[0045] Wherein: 0 - crystal resonator, 1 - frame box, 2 - airtight bin, 3 - mounting plate, 4 - first guide rod, 5 - sealing door, 6 - hydraulic press, 7 - pressing block, 8 - second guide rod, 9 - piston plate, 10 - first spring, 11 - material discharging plate, 12 - detection docking head, 13 - first control board, 14 - first connecting sleeve, 15 - first wedge block, 16 - second spring, 17 - second wedge block, 18 - third spring, 19 - second control board, 20 - second connecting sleeve, 21 - third wedge block, 22 - mounting shaft, 23 - rotating frame, 24 - fourth spring, 25 - loading table, 26 - screw rod, 27 - material transfer rack, 28 - first motor, 29 - synchronous belt group, 30 - second motor, 31 - limiting strip, 32 - collection box, 33 - material taking port, 34 - guide block. Detailed implementation manners

[0046] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0047] Embodiment: An airtightness detection device for a crystal resonator, in combination with Figures 1 - 3As shown in the figure, it includes: a frame box 1, a sealed chamber 2 is provided inside the frame box 1, and the crystal resonator 0 is subjected to airtightness detection inside the sealed chamber 2; a mounting plate 3 fixedly installed on the front side of the frame box 1; first guide rods 4 fixedly installed on both sides of the mounting plate 3; a sealing door 5 slidably installed on the first guide rods 4, and the sealing door 5 moves up and down to control the opening and closing of the sealed chamber 2; a hydraulic press 6 fixedly installed on the top of the frame box 1; a pressing block 7 fixedly installed on the telescopic end of the hydraulic press 6, and the hydraulic press 6 controls the up and down movement of the pressing block 7; a second guide rod 8 fixedly installed inside the frame box 1; a piston plate 9 slidably installed on the second guide rod 8, the piston plate 9 is arranged inside the sealed chamber 2, and the movement of the piston plate 9 will change the air pressure inside the sealed chamber 2. When the pressing block 7 moves, it will contact the piston plate 9 and control its downward movement; a first spring 10 sleeved on the second guide rod 8, and both ends of the first spring 10 are fixedly installed with the piston plate 9 and the frame box 1 respectively, and the first spring 10 is used to move the piston plate 9 upward for reset; a feeding plate 11 rotatably installed inside the frame box 1 for placing the crystal resonator 0, and the feeding plate 11 is arranged at the bottom of the space of the sealed chamber 2; a detection docking head 12 slidably installed inside the frame box 1, the detection docking head 12 is arranged at the lower rear of the space of the sealed chamber 2, and the detection docking head 12 is used to dock with the crystal resonator 0 to perform resistance value detection, and the screen display for displaying the detected resistance value data of the detection docking head 12 is arranged on the front side of the frame box 1.

[0048] Put the crystal resonator 0 into the sealed chamber 2 and place it on the feeding plate 11. Control the detection docking head 12 to move to contact and dock with the crystal resonator 0 placed on the feeding plate 11. Then the detection docking head 12 can display the resistance value data of the crystal resonator 0 on the screen display of the detection docking head 12; move the sealing door 5 downward to close the sealed chamber 2, start the hydraulic press 6, and control the pressing block 7 to move the piston plate 9 downward. The first spring 10 is stretched, and the piston plate 9 increases the air pressure inside the sealed chamber 2 by compressing the gas inside the sealed chamber 2. Assume that the encapsulation airtightness of the crystal resonator 0 is good, then the resistance value of the crystal resonator 0 will be able to remain stable. And assume that the encapsulation airtightness of the crystal resonator 0 is insufficient, then the crystal resonator 0 will change its resistance value under the influence of the air pressure inside the space of the sealed chamber 2. Thus, the airtightness of the crystal resonator 0 can be judged according to the change of the data. Therefore, using this equipment can achieve simple operation and have no negative impact; after the detection is completed, the hydraulic press 6 moves the pressing block 7 upward, and the first spring 10 moves the piston plate 9 upward for reset. Finally, take away the crystal resonator 0 that has completed the detection.

[0049] Combined with Figure 1 、 Figure 4 and Figure 5As shown in the figure, it further includes: a first control board 13 slidably installed on the front side of the upper part of the frame box 1, and the first control board 13 is fixedly installed with the pressing block 7; a first connecting sleeve 14 fixedly installed in the mounting plate 3; a first wedge block 15 slidably installed on the first connecting sleeve 14, the first wedge block 15 moves back and forth, and the first control board 13 contacts the inclined surface of the first wedge block 15; a second spring 16 fixedly installed between the first connecting sleeve 14 and the first wedge block 15, and the second spring 16 is used to move the first wedge block 15 backward for reset; a second wedge block 17 fixedly installed on the top of the sealing door 5, and the first wedge block 15 contacts the inclined surface of the second wedge block 17; a third spring 18 sleeved on the first guide rod 4, and both ends of the third spring 18 are fixedly installed with the sealing door 5 and the frame box 1 respectively, and the third spring 18 is used to move the sealing door 5 upward for reset.

[0050] During the process of the pressing block 7 moving downward, the following two control stages will be carried out: Stage 1, when the pressing block 7 moves downward, it squeezes the first wedge block 15 to move forward through the first control board 13, the second spring 16 is compressed, and when the first wedge block 15 moves forward, it will squeeze the second wedge block 17 to move downward, thereby controlling the sealing door 5 to move downward to close the sealed chamber 2, and the third spring 18 is stretched. At this time, the pressing block 7 has not moved to contact the piston plate 9; Stage 2, when the pressing block 7 continues to move downward, the first control board 13 restricts the first wedge block 15 from moving backward for reset, and keeps the sealing door 5 tightly closed. Subsequently, the pressing block 7 contacts the piston plate 9 and controls its movement to change the air pressure in the sealed chamber 2 for airtightness detection. Therefore, by using the cooperation of the first control board 13, the first wedge block 15 and the second wedge block 17, the automatic opening and closing of the sealing door 5 is realized, and the operation steps of the equipment are optimized.

[0051] Combined with Figure 1 、 Figure 6 and Figure 7 As shown in the figure, it further includes: a second control board 19 slidably installed on the upper part of the frame box 1, and the second control board 19 is fixedly installed with the pressing block 7; a second connecting sleeve 20 fixedly installed on the frame box 1; a third wedge block 21 slidably installed on the second connecting sleeve 20, the third wedge block 21 moves back and forth, the third wedge block 21 is arranged in the upper rear part of the space of the sealed chamber 2, and the second control board 19 contacts the inclined surface of the third wedge block 21; a mounting shaft 22 fixedly installed at the rear of the frame box 1; a rotating frame 23 rotatably installed on the mounting shaft 22, the rotating frame 23 is a telescopic structure, the upper end of the rotating frame 23 is rotatably installed with the third wedge block 21, and the lower end of the rotating frame 23 is rotatably installed with the detection docking head 12; a fourth spring 24 fixedly installed between the second connecting sleeve 20 and the third wedge block 21, and the fourth spring 24 is used to move the third wedge block 21 forward for reset.

[0052] During the downward movement of the pressing block 7, the downward movement of the pressing block 7 will squeeze the third wedge block 21 through the second control plate 19 to move backward, the fourth spring 24 is compressed, and then the rotating frame 23 is controlled to rotate. When the rotating frame 23 rotates, it can perform adaptive telescopic movement, and its lower end will push the detection docking head 12 forward to dock with the crystal resonator 0; subsequently, the pressing block 7 continues to move downward, and the second control plate 19 restricts the third wedge block 21 from moving forward to reset, while maintaining the position of the detection docking head 12; until the detection is completed, the pressing block 7 moves upward to reset, the fourth spring 24 moves the third wedge block 21 forward to reset, the rotating frame 23 is controlled to rotate in the reverse direction, and then the detection docking head 12 is controlled to move backward to reset. Therefore, this device realizes the automatic docking between the detection docking head 12 and the crystal resonator 0 by using the cooperation among the second control plate 19, the third wedge block 21, and the rotating frame 23, optimizing the operation steps of this device.

[0053] Combined with Figure 1 、 Figure 8 and Figure 9 As shown, it further includes: a feeding table 25 fixedly installed at the front of the frame box 1, the feeding table 25 leading to the sealed bin 2; two screw rods 26 rotatably installed on the feeding table 25; two material moving frames 27 slidably installed on the feeding table 25, the material moving frames 27 moving back and forth, the two material moving frames 27 being respectively threadedly installed with the two screw rods 26, the material moving frames 27 stably pushing the crystal resonator 0, the material moving frames 27 being set in an inverted L shape, and when the material moving frames 27 are controlled to move to the outermost ends of the screw rods 26, the distal ends of the material moving frames 27 will push the crystal resonator 0 into the sealed bin 2; a first motor 28 fixedly installed on the feeding table 25, the output end of the first motor 28 being fixedly installed with one of the screw rods 26; a synchronous belt group 29 installed between the two screw rods 26 to make the two screw rods 26 rotate synchronously.

[0054] Place the crystal resonator 0 on the feeding table 25, behind the material moving frame 27, start the first motor 28, and control the material moving frame 27 to move backward through the screw rod 26 to push the crystal resonator 0 into the sealed bin 2. Since the size of the crystal resonator 0 is small, this device uses the moving material moving frame 27 to assist in loading the crystal resonator 0 into the sealed bin 2, simplifying the refined operation steps and facilitating the operation of this device.

[0055] Combined with Figure 1 、 Figure 3 、 Figure 10 and Figure 11As shown in the figure, it further includes: a second motor 30 fixedly installed in the frame box 1, the output end of the second motor 30 is fixedly installed with the rotating shaft of the discharging plate 11; a limiting strip 31 fixedly installed on the discharging plate 11, and the limiting strip 31 is used to limit the position of the crystal resonator 0 pushed into the closed bin 2; a collection box 32 fixedly installed at the lower part of the frame box 1, the collection box 32 is arranged below the discharging plate 11, and the collection box 32 is used to collect the crystal resonator 0. The collection box 32 is provided with two partitions on the left and right. When the discharging plate 11 rotates clockwise, the crystal resonator 0 will be guided into the right partition, and vice versa into the left partition; feeding ports 33 are opened on both sides of the collection box 32, and the two feeding ports 33 respectively lead to the two partitions of the collection box 32 to take out the crystal resonators 0 with different detection results respectively; a guiding block 34 fixedly installed in the frame box 1, the guiding block 34 is used to adjust the position of the crystal resonator 0, and the guiding block 34 is arranged on both sides in front of the closed bin 2.

[0056] When the material transfer rack 27 pushes the crystal resonator 0 backward, the guiding block 34 assists the crystal resonator 0 to keep its position centered by restricting the left and right positions of the crystal resonator 0, while the limiting strip 31 is used to position the rear position of the crystal resonator 0. Therefore, with the cooperation of the two, the crystal resonator 0 can be accurately docked with the detection docking head 12, ensuring the detection accuracy of the crystal resonator 0.

[0057] After the crystal resonator 0 completes the detection, according to the detection result, the second motor 30 is controlled to rotate the discharging plate 11 clockwise / counterclockwise, and the crystal resonator 0 is collected in two different partitions of the collection box 32. Finally, the crystal resonators 0 with two results are processed respectively in the two partitions of the collection box 32.

[0058] It is worth noting that in practical applications, a controller can be configured to control each electrical component to achieve automated operation.

[0059] It should be understood that the above description is only for exemplary purposes and does not mean to limit the present invention. Those skilled in the art will understand that the variant forms of the present invention will be included within the scope of the claims herein.

Claims

1. An airtightness detection device for a crystal resonator, characterized in that, Comprising: A box (1) with a sealed chamber (2) provided inside. The crystal resonator (0) is subjected to airtightness detection inside the sealed chamber (2). A mounting plate (3) fixedly connected to the box (1). A sealing door (5) provided on the mounting plate (3) for opening and closing the sealed chamber (2). A hydraulic press (6) fixedly connected to the box (1). A pressing block (7) fixedly connected to the telescopic end of the hydraulic press (6). The hydraulic press (6) controls the movement of the pressing block (7). A piston plate (9) slidably connected inside the box (1). The piston plate (9) is arranged inside the sealed chamber (2). The pressing block (7) will contact and control the movement of the piston plate (9) to change the air pressure inside the sealed chamber (2). An elastic member for resetting the piston plate (9) is provided between the piston plate (9) and the box (1). A feeding plate (11) provided inside the box (1) for placing the crystal resonator (0). The feeding plate (11) is arranged at the bottom of the space of the sealed chamber (2). And a detection docking head (12) provided inside the box (1) for detecting the resistance value of the crystal resonator (0). The screen display for displaying the detected resistance value data of the detection docking head (12) is provided on the box (1). The sealing door (5) is slidably connected to the mounting plate (3). An elastic member for resetting the sealing door (5) is provided between the sealing door (5) and the mounting plate (3). It further comprises: A first control board (13) slidably connected to the box (1), and the first control board (13) is fixedly connected to the pressing block (7). A first wedge block (15) slidably connected to the mounting plate (3). The first control board (13) contacts the inclined surface of the first wedge block (15). An elastic member for resetting the first wedge block (15) is provided between the first wedge block (15) and the mounting plate (3). And a second wedge block (17) fixedly connected to the sealing door (5). The first wedge block (15) contacts the inclined surface of the second wedge block (17). Through the cooperation of the first wedge block (15) and the second wedge block (17), the movement of the first control board (13) can be converted into the movement of the sealing door (5). The detection docking head (12) is slidably connected inside the box (1). It further comprises: A second control board (19) slidably connected to the box (1), and the second control board (19) is fixedly connected to the pressing block (7). A third wedge block (21) slidably connected inside the box (1). The second control board (19) contacts the inclined surface of the third wedge block (21). An elastic member for resetting the third wedge block (21) is provided between the third wedge block (21) and the box (1). And a rotating frame (23) rotatably connected inside the box (1). The rotating frame (23) is a telescopic structure. One end of the rotating frame (23) is rotatably connected to the third wedge block (21), and the other end of the rotating frame (23) is rotatably connected to the detection docking head (12). Through the cooperation of the third wedge block (21) and the rotating frame (23), the movement of the second control board (19) can be converted into the movement of the detection docking head (12). Further included are: a limiting strip (31) fixedly connected to the feeding plate (11), and the limiting strip (31) is used to limit the position of the crystal resonator (0) pushed into the sealed chamber (2).

2. The airtightness detection device for a crystal resonator according to claim 1, characterized in that, Further included are: a feeding table (25) fixedly connected to the frame box (1), and the feeding table (25) leads to the sealed chamber (2); a screw rod (26) rotatably connected to the feeding table (25); a material transfer rack (27) slidably connected to the feeding table (25), and the material transfer rack (27) is threadedly connected to the screw rod (26); and a first motor (28) fixedly connected to the feeding table (25), and the output end of the first motor (28) is fixedly connected to the screw rod (26).

3. The airtightness detection device for a crystal resonator according to claim 2, wherein, The material transfer rack (27) is arranged in an inverted L shape. When the material transfer rack (27) is controlled to move to the outermost end of the screw rod (26), the distal end of the material transfer rack (27) will push the crystal resonator (0) into the sealed chamber (2).

4. The airtightness detection device for a crystal resonator according to claim 3, characterized in that, The feeding plate (11) is rotatably connected inside the frame box (1); Further included are: a second motor (30) fixedly connected inside the box, and the output end of the second motor (30) is fixedly connected to the rotating shaft of the feeding plate (11); and a collection box (32) fixedly connected to the lower part of the frame box (1) for collecting the crystal resonator (0). The collection box (32) is located below the feeding plate (11). Two partitions are provided inside the collection box (32), and the feeding plate (11) will guide the crystal resonator (0) into different partitions of the collection box (32) in different rotation directions; Two material taking openings (33) are provided on the collection box (32), respectively corresponding to leading to the two partitions inside the collection box (32).

5. The airtightness detection device for a crystal resonator according to claim 4, characterized in that, Further included are: a guiding block (34) fixedly connected inside the frame box (1), and the guiding block (34) is used to adjust the position of the crystal resonator (0).

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