A kind of vacuum sealing detection instrument for conductive silver paste finished product

Abstract

The utility model discloses a kind of vacuum sealing detection instrument of conductive silver paste finished product, including bottom plate, multiple groups of communication holes are opened in the box, the first mounting bracket is communicated with second mounting bracket by communication hole, the bottom of sealing cover is provided with sealing gasket, the sealing gasket is fixed on the first mounting bracket and second mounting bracket by vacuum suction;The utility model is through the design of vacuum pump, second delivery pipe, first mounting bracket and second mounting bracket etc. structure, by vacuum pump and second delivery pipe cooperation, vacuum can be extracted in the first mounting bracket and second mounting bracket, to make the sealing gasket of sealing cover bottom evenly adhere to the top of first mounting bracket and second mounting bracket under the action of negative pressure, eliminate the uneven stress problem caused by single-point locking, and without manual adjustment locking strength, vacuum suction automatically complete sealing, can improve the installation efficiency and installation effect of sealing cover.

Description

Technical Field

[0001] This utility model relates to the field of conductive silver paste packaging and sealing testing technology, specifically a vacuum sealing testing instrument for finished conductive silver paste products. Background Technology

[0002] Conductive silver paste is a key material in electronic packaging, photovoltaic electrodes, and printed circuits, and the storage stability of the finished product directly affects product performance. Currently, the industry commonly uses vacuum sealing testing instruments to test the sealing performance of materials such as syringes and aluminum foil bags to ensure that the silver paste does not oxidize or evaporate solvents during transportation and storage.

[0003] However, the sealing chamber cover of existing vacuum testing instruments is a key component to ensure the airtightness of the testing environment. However, the existing sealing chamber cover design has some problems. Some devices use single-point locking, resulting in uneven force on the sealing cover. During high-pressure testing, the edge leaks air, which interferes with the detection of the true leakage rate. Therefore, we need to propose a vacuum sealing testing instrument for conductive silver paste. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum sealing testing instrument for conductive silver paste products, which enables the sealing cap to uniformly adhere to the top of the first and second mounting brackets under negative pressure, eliminating the problem of uneven force caused by single-point locking, and eliminating the need for manual adjustment of the locking force. Vacuum adsorption automatically completes the sealing, thereby improving the installation efficiency and effect of the sealing cap and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vacuum sealing testing instrument for conductive silver paste products includes a base plate, a housing fixedly mounted on the top of the base plate, a second mounting bracket fixedly connected inside the housing, a first mounting bracket fixedly connected to the surface of the housing, and multiple sets of connecting holes provided on the housing, wherein the first mounting bracket communicates with the second mounting bracket through the connecting holes.

[0007] A vacuum pump is fixedly installed on the top of the base plate. The outlet of the vacuum pump is connected to a first delivery pipe. The end of the first delivery pipe is connected to a second delivery pipe. The second delivery pipe is connected to a first mounting frame. A sealing cover is provided on the top of the box. A sealing gasket is provided at the bottom of the sealing cover. The sealing gasket is fixed on the first mounting frame and the second mounting frame by vacuum adsorption.

[0008] Preferably, cavities are provided between the inner side of the first mounting bracket and the surface of the housing, and between the outer side of the second mounting bracket and the inner wall of the housing. A second exhaust pipe is connected to the side of the first mounting bracket, and a second sealing valve is fixedly installed on the second exhaust pipe.

[0009] Preferably, a bracket is fixedly installed inside the box, and a bidirectional lead screw is movably installed at the bottom of the bracket. A first threaded seat is installed on the left-hand thread of the bidirectional lead screw, and a second threaded seat is installed on the right-hand thread of the bidirectional lead screw. A clamping block for clamping aluminum foil bags is fixedly installed at the upper end of both the first and second threaded seats. The clamping block has multiple sets of arc-shaped grooves for clamping and fixing needle tubes.

[0010] Preferably, the side of the box is connected to a water inlet pipe and a drain pipe, a water inlet valve is fixedly installed on the water inlet pipe, and a drain valve is fixedly installed on the drain pipe.

[0011] Preferably, the side of the housing is connected to a first exhaust pipe, and a first sealing valve is fixedly installed on the first exhaust pipe.

[0012] Preferably, one end of the first conveying pipe is connected to the housing, a first switching valve is fixedly installed on the first conveying pipe, a second switching valve is fixedly installed on the second conveying pipe, a second pressure gauge is fixedly installed on the second conveying pipe, and a first pressure gauge is fixedly installed on the side of the housing.

[0013] Preferably, observation windows for observation are provided on both sides of the box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a design incorporating a vacuum pump, a second delivery pipe, a first mounting bracket, and a second mounting bracket. By cooperating with the second delivery pipe, a vacuum can be created within the first and second mounting brackets, allowing the sealing gasket at the bottom of the sealing cap to adhere evenly to the top of the first and second mounting brackets under negative pressure. This eliminates the problem of uneven force caused by single-point locking and eliminates the need for manual adjustment of the locking force, as vacuum adsorption automatically completes the sealing process, thereby improving the installation efficiency and effectiveness of the sealing cap. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0017] Figure 2 This is the second structural schematic diagram of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a structural schematic diagram of the housing, the first mounting bracket, and the second mounting bracket of this utility model;

[0020] Figure 5This is a schematic diagram of the structure of the bracket, first threaded seat, second threaded seat and clamping block of this utility model.

[0021] In the diagram: 1. Base plate; 2. Housing; 3. Bracket; 4. Two-way lead screw; 5. First threaded seat; 6. Second threaded seat; 7. Clamping block; 8. Arc groove; 9. Water injection pipe; 10. Water injection valve; 11. Drain pipe; 12. Drain valve; 13. First pressure gauge; 14. Vacuum pump; 15. First delivery pipe; 16. First switching valve; 17. Second delivery pipe; 18. Second switching valve; 19. Second pressure gauge; 20. First exhaust pipe; 21. First sealing valve; 22. Observation window; 23. First mounting bracket; 24. Second mounting bracket; 25. Second exhaust pipe; 26. Second sealing valve; 27. Sealing cover; 28. Sealing gasket; 29. ​​Connecting hole. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution:

[0024] A vacuum sealing testing instrument for conductive silver paste products includes a base plate 1, a housing 2 fixedly mounted on the top of the base plate 1, a second mounting bracket 24 fixedly connected inside the housing 2, a first mounting bracket 23 fixedly connected to the surface of the housing 2, and multiple sets of connecting holes 29 opened on the housing 2, the first mounting bracket 23 communicating with the second mounting bracket 24 through the connecting holes 29.

[0025] A vacuum pump 14 is fixedly installed on the top of the base plate 1. The outlet of the vacuum pump 14 is connected to a first delivery pipe 15. The end of the first delivery pipe 15 is connected to a second delivery pipe 17. The second delivery pipe 17 is connected to the first mounting frame 23. A sealing cover 27 is provided on the top of the housing 2. A sealing gasket 28 is provided at the bottom of the sealing cover 27. The sealing gasket 28 is fixed on the first mounting frame 23 and the second mounting frame 24 by vacuum adsorption.

[0026] In an optional embodiment: a cavity is provided between the inner side of the first mounting bracket 23 and the surface of the housing 2, and between the outer side of the second mounting bracket 24 and the inner wall of the housing 2. A second exhaust pipe 25 is connected to the side of the first mounting bracket 23, and a second sealing valve 26 is fixedly installed on the second exhaust pipe 25.

[0027] It should be noted that after the syringe or aluminum foil bag has been tested for sealing, opening the second sealing valve 26 allows outside air to quickly enter the cavity, restoring the pressure inside the cavity to normal.

[0028] In an optional embodiment: a bracket 3 is fixedly installed inside the housing 2, a bidirectional lead screw 4 is movably installed at the bottom of the bracket 3, a first thread seat 5 is installed on the left-hand thread of the bidirectional lead screw 4, a second thread seat 6 is installed on the right-hand thread of the bidirectional lead screw 4, and clamping blocks 7 for clamping aluminum foil bags are fixedly installed at the upper ends of the first thread seat 5 and the second thread seat 6. Multiple sets of arc-shaped grooves 8 for clamping and fixing needle tubes are opened on the clamping blocks 7.

[0029] It should be noted that the bidirectional lead screw 4, the first threaded seat 5, the arc groove 8, the second threaded seat 6, and the clamping block 7 work together to fix the needle tube or aluminum foil bag.

[0030] In an optional embodiment: the side of the housing 2 is connected to a water inlet pipe 9 and a drain pipe 11, a water inlet valve 10 is fixedly installed on the water inlet pipe 9, and a drain valve 12 is fixedly installed on the drain pipe 11.

[0031] It should be noted that when the water injection valve 10 is opened, a water supply device is connected to the external water injection pipe 9. The water supply device can be set as a water pump and a water pipe. When the water pump is started, the water pump can draw water through the water pipe and then deliver it to the tank 2 through the water injection pipe 9 for water injection. After water injection, the water injection valve 10 is closed. After the needle tube or aluminum foil bag is sealed and tested, the drain valve 12 is opened, and the water in the tank 2 can be discharged through the drain pipe 11.

[0032] In an optional embodiment: a first exhaust pipe 20 is connected to the side of the housing 2, and a first sealing valve 21 is fixedly installed on the first exhaust pipe 20.

[0033] It should be noted that after the needle tube or aluminum foil bag is sealed, the outside air can be quickly introduced into the chamber 2 by opening the first sealing valve 21, so that the pressure inside the chamber 2 can be restored to normal pressure.

[0034] In an optional embodiment: one end of the first conveying pipe 15 is connected to the housing 2, a first switching valve 16 is fixedly installed on the first conveying pipe 15, a second switching valve 18 is fixedly installed on the second conveying pipe 17, a second pressure gauge 19 is fixedly installed on the second conveying pipe 17, and a first pressure gauge 13 is fixedly installed on the side of the housing 2.

[0035] It should be noted that by cooperating with the first switching valve 16 and the second switching valve 18, it is possible to selectively evacuate the housing 2 or the cavity.

[0036] In an optional embodiment, observation windows 22 for observation are provided on both sides of the housing 2.

[0037] It should be noted that by setting the observation window 22, the situation during the sealing test of the syringe or aluminum foil bag can be observed, and whether air bubbles appear in the syringe or aluminum foil bag.

[0038] The usage process of this utility model is as follows: First, fix the packaging to be tested. If the needle tube needs to be sealed, the needle tube can be placed in the arc groove 8 between the two sets of clamping blocks 7 as needed. By tightening the bidirectional screw 4, the bidirectional screw 4 will simultaneously bring the first thread seat 5 and the second thread seat 6 closer to each other. The needle tube will be fixed by the clamping blocks 7. If the aluminum foil bag is to be sealed, the bottom edge of the aluminum foil bag can be placed between the two sets of clamping blocks 7. By tightening the bidirectional screw 4, the clamping blocks 7 will be fixed to the aluminum foil bag. In addition, ensure that the leak-prone parts are facing upwards, such as the needle tube seal and the heat-sealed edge of the bag.

[0039] After fixing the syringe or aluminum foil bag, open the water injection valve 10 and add water until it completely covers the sample. Place the sealing cap 27 on top of the first mounting bracket 23 and the second mounting bracket 24. Start the vacuum pump 14. The vacuum pump 14 extracts air from the inner cavity of the first mounting bracket 23 and the second mounting bracket 24 through the first delivery pipe 15 and the second delivery pipe 17. After the extracted air is discharged by the vacuum pump 14, the sealing gasket 28 at the bottom of the sealing cap 27 is evenly attached to the top of the first mounting bracket 23 and the second mounting bracket 24 under negative pressure. This eliminates the problem of uneven force caused by single-point locking and eliminates the need for manual adjustment of the locking force. Vacuum adsorption automatically completes the sealing, which can improve the installation efficiency and installation effect of the sealing cap 27. The vacuum situation in the cavity can be observed through the second pressure gauge 19.

[0040] After fixing the sealing cover 27, open the first switching valve 16 so that the vacuum pump 14 draws a vacuum in the box 2 through the first delivery pipe 15. Observe the vacuuming situation in the box 2 through the first pressure gauge 13. After the target vacuum level is reached, stop the vacuum pump 14 and maintain the pressure for 50 seconds.

[0041] Observe the packaging surface through observation window 22. If bubbles continue to appear at a specific location, the leak point can be identified. If the needle cap of the syringe is not sealed properly, or if there are no bubbles, the seal is considered to be qualified.

[0042] The vacuum pump 14 in this application is controlled automatically by a controller. The controller circuit can be easily programmed by those skilled in the art and is common knowledge in the field. Since this application is mainly for protecting the structure, shape and its combination, the control method and circuit connection will not be explained in detail. The device is powered by a built-in power supply or an external power supply.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum sealing testing instrument for conductive silver paste finished products, comprising a base plate (1), characterized in that: A box (2) is fixedly installed on the top of the base plate (1). A second mounting bracket (24) is fixedly connected inside the box (2). A first mounting bracket (23) is fixedly connected to the surface of the box (2). Multiple sets of connecting holes (29) are opened on the box (2). The first mounting bracket (23) is connected to the second mounting bracket (24) through the connecting holes (29). A vacuum pump (14) is fixedly installed on the top of the base plate (1). The outlet of the vacuum pump (14) is connected to a first delivery pipe (15). The end of the first delivery pipe (15) is connected to a second delivery pipe (17). The second delivery pipe (17) is connected to a first mounting bracket (23). A sealing cover (27) is provided on the top of the box (2). A sealing gasket (28) is provided at the bottom of the sealing cover (27). The sealing gasket (28) is fixed on the first mounting bracket (23) and the second mounting bracket (24) by vacuum adsorption.

2. The vacuum sealing testing instrument for conductive silver paste products according to claim 1, characterized in that: A cavity is provided between the inner side of the first mounting bracket (23) and the surface of the box (2), and between the outer side of the second mounting bracket (24) and the inner wall of the box (2). The side of the first mounting bracket (23) is connected to a second exhaust pipe (25), and a second sealing valve (26) is fixedly installed on the second exhaust pipe (25).

3. The vacuum sealing testing instrument for conductive silver paste products according to claim 1, characterized in that: A bracket (3) is fixedly installed inside the box (2). A bidirectional lead screw (4) is movably installed at the bottom of the bracket (3). A first thread seat (5) is installed on the left-hand thread of the bidirectional lead screw (4), and a second thread seat (6) is installed on the right-hand thread of the bidirectional lead screw (4). A clamping block (7) for clamping aluminum foil bags is fixedly installed at the upper end of both the first thread seat (5) and the second thread seat (6). Multiple sets of arc-shaped grooves (8) for clamping and fixing needle tubes are opened on the clamping block (7).

4. The vacuum sealing testing instrument for conductive silver paste products according to claim 1, characterized in that: The side of the box (2) is connected to a water inlet pipe (9) and a drain pipe (11). A water inlet valve (10) is fixedly installed on the water inlet pipe (9), and a drain valve (12) is fixedly installed on the drain pipe (11).

5. The vacuum sealing testing instrument for conductive silver paste products according to claim 1, characterized in that: The side of the housing (2) is connected to a first exhaust pipe (20), and a first sealing valve (21) is fixedly installed on the first exhaust pipe (20).

6. The vacuum sealing testing instrument for conductive silver paste products according to claim 1, characterized in that: One end of the first conveying pipe (15) is connected to the box body (2). A first switching valve (16) is fixedly installed on the first conveying pipe (15). A second switching valve (18) is fixedly installed on the second conveying pipe (17). A second pressure gauge (19) is fixedly installed on the second conveying pipe (17). A first pressure gauge (13) is fixedly installed on the side of the box body (2).

7. The vacuum sealing testing instrument for conductive silver paste products according to claim 1, characterized in that: Both sides of the box (2) are provided with observation windows (22) for observation.

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