Solder paste tank with high sealing performance

Abstract

The utility model relates to the field of solder paste tanks, and discloses a high-leakproofness solder paste tank which comprises a tank body and a connecting cylinder, a threaded groove is formed in the top of the tank body, the inner wall of the threaded groove is in threaded connection with a shielding cover, a connecting hole is formed in the top of the connecting cylinder, and a shielding plate is mounted on the surface of the connecting cylinder; a sliding block is slidably mounted on the inner wall of the connecting cylinder, a pull rod is fixedly connected to the bottom end of the sliding block, a first spring is fixedly mounted at the bottom end of the sliding block, and the surface of the connecting cylinder is fixedly connected with the inner wall of the tank body; a connecting cylinder is installed on the inner wall of the tank body, the top of the connecting cylinder communicates with the inner wall of the tank body through a connecting hole, the inner wall of the connecting cylinder is slidably connected with a sliding block, and a pull rod and a first spring are installed at the bottom end of the sliding block, so that the pull rod is pulled to control the sliding block to move downwards before the shielding cover is closed, and the first spring at the bottom end of the sliding block is shrunk; whether the shielding cover is completely sealed or not is judged according to the springback condition of the first spring.

Description

Technical Field

[0001] The present application relates to the field of solder paste cans, and in particular to a highly airtight solder paste can. Background Art

[0002] Solder paste is a new type of welding material that came into being with SMT. It is a paste-like mixture formed by mixing solder powder, flux and other surfactants, thixotropic agents, etc. It is mainly used for welding electronic components such as resistors, capacitors, ICs, etc. on the surface of PCBs in the SMT industry. This material is very suitable for reliable welding of automated production of surface mounts and is a high-tech product of the current electronics industry. Solder paste is a flux. First, it isolates the air to prevent oxidation. In addition, it increases capillary action, increases wettability, and prevents cold soldering. Solder paste is often installed with the help of a tank. When a conventional solder paste tank is used, the solder paste packaged in a packaging bag is loaded into the tank. A threaded groove is opened on the top of the tank. The tank is connected to the shielding cover with the help of the threaded groove, and the tank is closed with the help of the shielding cover.

[0003] With respect to the above-mentioned related technologies, the inventors believe that it is difficult to detect the sealing effect of the conventional solder paste can after it is sealed, which results in the solder paste on the inner wall of the can being easily affected by the external environment when it is not completely sealed, resulting in deterioration and even leakage of the solder paste in the can.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that it is difficult to detect the sealing performance of a conventional solder paste can when in use, the present application provides a solder paste can with high sealing performance.

[0006] The highly sealed solder paste can provided by the present application adopts the following technical solution:

[0007] A highly sealed solder paste can comprises a can body and a connecting tube, a threaded groove is provided on the top of the can body, a shielding cover is threadedly connected to the inner wall of the threaded groove, a connecting hole is provided on the top of the connecting tube, and a shielding plate is installed on the surface of the connecting tube, a slider is slidably installed on the inner wall of the connecting tube, a pull rod is fixedly connected to the bottom end of the slider, and a first spring is fixedly installed on the bottom end of the slider, the surface of the connecting tube is fixedly connected to the inner wall of the tank body, the inner wall of the connecting hole is communicated with the inner wall of the tank body, the bottom end of the first spring is fixedly connected to the inner wall of the connecting tube, the size of the surface of the slider is matched with the size of the inner wall of the connecting tube, and the surface of the pull rod is slidably installed on the bottom end of the connecting tube.

[0008] Preferably, the shielding plate is a transparent glass plate, and the size of one end of the shielding plate is matched with the size of the surface of the connecting tube, and a plurality of scale bars are fixedly installed on the surface of the shielding plate.

[0009] Preferably, two shielding rings are fixedly connected to the surface of the sliding block, the shielding rings are rubber rings, and the size specifications of the surfaces of the shielding rings are interference fit with the size specifications of the inner wall of the connecting tube.

[0010] Preferably, a fixing frame is fixedly installed on the inner wall of the shielding cover, and a plurality of limit blocks are slidably connected to the inner wall of the fixing frame. The limit blocks are symmetrically distributed with the fixing frame as the axis, and a sealing ring is movably connected to one end of the limit block. The sealing ring is a rubber ring, and the top of the sealing ring is fixedly installed to the bottom end of the shielding cover.

[0011] Preferably, a second spring is fixedly connected to the inner wall of the fixing frame, and one end of the second spring away from the fixing frame is fixedly mounted to one end of the limiting block.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. By installing the connecting tube on the inner wall of the tank body, the top of the connecting tube is connected to the inner wall of the tank body by means of the connecting hole, and the inner wall of the connecting tube is slidably connected with a slider, and a pull rod and a first spring are installed at the bottom end of the slider, and the bottom end of the first spring is connected to the inner wall of the connecting tube, so that before the shielding cover is closed, the pull rod is pulled to control the slider to move downward, so that the first spring at the bottom end of the slider is contracted, so as to judge whether the shielding cover is completely sealed according to the rebound of the first spring, and a shielding plate made of transparent glass is installed on the surface of the connecting tube, and a plurality of scale bars are installed on the surface of the shielding plate, so that the moving position of the slider can be observed with the help of the shielding plate made of transparent glass, and the specific moving position of the slider can be observed with the help of the scale bars, and two shielding rings made of rubber are installed on the surface of the slider, and the surface of the shielding ring is slidably connected with the inner wall of the connecting tube, so as to improve the sealing effect between the slider and the connecting tube with the help of the shielding ring, and avoid the situation where the outside air leaks into the connecting tube and causes the device to fail; compared with the prior art, the use effect of the solder paste tank is effectively improved;

[0014] 2. The fixing frame and the rubber sealing ring can also be installed at the bottom of the shielding cover. The inner wall of the fixing frame is slidably connected with several limit blocks. One end of the limit block contacts the inner side of the sealing ring to control the limit block to slide on the inner wall of the fixing frame. One end of the limit block pushes the sealing ring, so that after the shielding cover is connected to the tank body, the sealing ring fits the inner wall of the tank body, effectively improving the sealing effect of the device. A second spring is installed between the fixing frame and the limit block, so that the limit block can be pushed with the help of the second spring, thereby keeping the sealing ring in contact with the inner wall of the tank body; effectively improving the sealing effect of the solder paste tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a highly sealed solder paste can in an embodiment of the application;

[0016] Figure 2 It is a schematic diagram of the connecting tube structure of the embodiment of the application;

[0017] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;

[0018] Figure 4 It is a schematic diagram of the structure at location A of an embodiment of the application.

[0019] Explanation of the accompanying drawings: 1. tank body; 2. threaded groove; 3. shielding cover; 4. connecting tube; 5. slider; 6. pull rod; 7. first spring; 8. connecting hole; 9. shielding plate; 10. scale bar; 11. shielding ring; 12. fixing frame; 13. limit block; 14. sealing ring; 15. second spring. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 —4 Provide further details of this application.

[0021] The present application embodiment discloses a highly sealed solder paste can, referring to Figure 1 - Figure 2 , including a tank body 1. When in use, the solder paste packaged in the packaging bag is loaded into the tank body 1. A threaded groove 2 is opened on the top of the tank body 1. The tank body 1 is connected to the shielding cover 3 by means of the threaded groove 2. The tank body 1 is closed by means of the shielding cover 3. The connecting tube 4 is installed on the inner wall of the tank body 1. The top of the connecting tube 4 is connected to the inner wall of the tank body 1 by means of the connecting hole 8, and the inner wall of the connecting tube 4 is slidably connected with a slider 5. The bottom end of the slider 5 is installed with a pull rod 6 and a first spring 7. The surface of the pull rod 6 is slidably connected to the bottom end of the connecting tube 4, and the bottom end of the first spring 7 is connected to the inner wall of the connecting tube 4. Before the shielding cover 3 is closed, the pull rod 6 is pulled to control the slider 5 to move downward, so that the first spring 7 at the bottom of the slider 5 contracts, and finally the shielding cover 3 is closed. When the shielding cover 3 is not completely sealed, the outside air enters the tank body 1, so that the first spring 7 pushes the slider 5 to move, so as to judge whether the shielding cover 3 is completely sealed according to the rebound of the first spring 7.

[0022] Reference Figure 2A baffle plate 9 made of transparent glass is installed on the surface of the connecting tube 4, and several scale bars 10 are installed on the surface of the baffle plate 9. The moving position of the slider 5 is observed with the help of the baffle plate 9 made of transparent glass, and the scale bars 10 are used to facilitate the observation of the specific moving position of the slider 5. Two baffle rings 11 made of rubber are installed on the surface of the slider 5. The surface of the baffle ring 11 is slidably connected to the inner wall of the connecting tube 4. The baffle ring 11 is used to improve the sealing effect between the slider 5 and the connecting tube 4 to prevent outside air from leaking into the connecting tube 4 and causing the device to fail.

[0023] Reference Figure 3 - Figure 4 , install the fixing frame 12 and the sealing ring 14 made of rubber material at the bottom end of the shielding cover 3, the inner wall of the fixing frame 12 is slidably connected with several limit blocks 13, one end of the limit block 13 is in contact with the inner side of the sealing ring 14, control the limit block 13 to slide on the inner wall of the fixing frame 12, and push the sealing ring 14 with one end of the limit block 13, so that after the shielding cover 3 is connected to the tank body 1, the sealing ring 14 is fitted with the inner wall of the tank body 1, effectively improving the sealing effect of the device, a second spring 15 is installed between the fixing frame 12 and the limit block 13, and the limit block 13 is pushed by the second spring 15, so that the sealing ring 14 is kept in contact with the inner wall of the tank body 1, which is more convenient when used.

[0024] The implementation principle of a highly sealed solder paste tank in the embodiment of the present application is as follows: by installing the connecting tube 4 on the inner wall of the tank body 1, the top of the connecting tube 4 is connected to the inner wall of the tank body 1 by means of the connecting hole 8, and the inner wall of the connecting tube 4 is slidably connected with a slider 5, the bottom end of the slider 5 is installed with a pull rod 6 and a first spring 7, and the bottom end of the first spring 7 is connected to the inner wall of the connecting tube 4, so that before the shielding cover 3 is closed, the pull rod 6 is pulled to control the slider 5 to move downward, so that the first spring 7 at the bottom of the slider 5 contracts, so as to judge whether the shielding cover 3 is completely sealed according to the rebound of the first spring 7, and the connecting tube 4 is closed. A baffle plate 9 made of transparent glass is installed on the surface, and several scale bars 10 are installed on the surface of the baffle plate 9, so that the moving position of the slider 5 can be observed with the help of the baffle plate 9 made of transparent glass, and the scale bars 10 are used to facilitate the observation of the specific moving position of the slider 5. Two baffle rings 11 made of rubber are installed on the surface of the slider 5, and the surface of the baffle ring 11 is slidably connected to the inner wall of the connecting tube 4, so that the sealing effect between the slider 5 and the connecting tube 4 can be improved with the help of the baffle ring 11 to prevent outside air from leaking into the connecting tube 4 and causing the device to fail.

[0025] The fixing frame 12 and the sealing ring 14 made of rubber material can also be installed at the bottom end of the shielding cover 3. The inner wall of the fixing frame 12 is slidably connected with several limit blocks 13. One end of the limit block 13 contacts the inner side of the sealing ring 14 to control the limit block 13 to slide on the inner wall of the fixing frame 12. One end of the limit block 13 pushes the sealing ring 14, so that after the shielding cover 3 is connected to the tank body 1, the sealing ring 14 is fitted with the inner wall of the tank body 1, effectively improving the sealing effect of the device. A second spring 15 is installed between the fixing frame 12 and the limit block 13, so that the limit block 13 can be pushed by the second spring 15, so as to keep the sealing ring 14 in contact with the inner wall of the tank body 1.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A highly airtight solder paste can, comprising a can body (1) and a connecting tube (4), characterized in that: The top of the tank body (1) is provided with a threaded groove (2), the inner wall of the threaded groove (2) is threadedly connected to a shielding cover (3), the top of the connecting tube (4) is provided with a connecting hole (8), and a shielding plate (9) is installed on the surface of the connecting tube (4), a slider (5) is slidably installed on the inner wall of the connecting tube (4), the bottom end of the slider (5) is fixedly connected to a pull rod (6), and the bottom end of the slider (5) is fixedly installed with a first spring (7).

2. The highly airtight solder paste can according to claim 1, characterized in that: The surface of the connecting tube (4) is fixedly connected to the inner wall of the tank body (1), the inner wall of the connecting hole (8) is connected to the inner wall of the tank body (1), the bottom end of the first spring (7) is fixedly connected to the inner wall of the connecting tube (4), the size of the surface of the sliding block (5) is compatible with the size of the inner wall of the connecting tube (4), and the surface of the pull rod (6) is slidably mounted on the bottom end of the connecting tube (4).

3. The highly airtight solder paste can according to claim 1, characterized in that: The shielding plate (9) is a transparent glass plate, and the size specification of one end of the shielding plate (9) matches the size specification of the surface of the connecting tube (4). A plurality of scale bars (10) are fixedly mounted on the surface of the shielding plate (9).

4. The highly airtight solder paste can according to claim 1, characterized in that: Two shielding rings (11) are fixedly connected to the surface of the sliding block (5); the shielding rings (11) are rubber rings, and the dimensions of the surfaces of the shielding rings (11) are interference fit with the dimensions of the inner walls of the connecting tube (4).

5. The highly airtight solder paste can according to claim 1, characterized in that: A fixing frame (12) is fixedly mounted on the inner wall of the shielding cover (3), and a plurality of limit blocks (13) are slidably connected to the inner wall of the fixing frame (12), the plurality of limit blocks (13) are symmetrically distributed with the fixing frame (12) as an axis, and a sealing ring (14) is movably connected to one end of the limit block (13), the sealing ring (14) is a rubber ring, and the top of the sealing ring (14) is fixedly mounted to the bottom end of the shielding cover (3).

6. The highly airtight solder paste can according to claim 5, characterized in that: A second spring (15) is fixedly connected to the inner wall of the fixing frame (12), and one end of the second spring (15) away from the fixing frame (12) is fixedly mounted to one end of the limiting block (13).

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