An aerosol generating agent silica gel coating tooling and its coating method

Abstract

The present invention discloses a silica gel coating tooling for an aerosol generating agent and a coating method thereof, including a coating chamber with an open top. A first positioning plate, a second positioning plate and a third positioning plate are hinged to the top of the coating chamber. A first positioning hole matching the outer side of the outer mold is formed on the surface of the first positioning plate. A second positioning hole matching the outer side of the medicine column is formed on the surface of the second positioning plate. A third positioning hole matching the outer side of the reinforcing mesh is formed on the surface of the third positioning plate. A positioning groove is formed at the bottom of the coating chamber, and the positioning groove matches the bottom of the positioning mold. The top of the positioning mold matches the bottom of the outer mold. The present invention solves the technical problem that air bubbles and voids are easily generated during the silica gel coating process of the aerosol generating agent medicine column. The whole coating tooling has a simple structure and is convenient to use, greatly improving the coating efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of silica gel coating for aerosol generating agents, and specifically refers to an aerosol generating agent silica gel coating tooling and its coating method. Background Art

[0002] Aerosol fire extinguishing devices have gained wide market favor due to their superior fire extinguishing performance. However, compared with traditional water-based and dry powder fire extinguishing devices, the biggest problem with aerosol fire extinguishing devices is that the spraying temperature is too high after the fire extinguishing device is activated, and due to excessive internal pressure during device spraying, there is a problem of the aerosol generating agent catching fire.

[0003] Traditional aerosol fire extinguishing devices use silica gel coating to wrap the aerosol generating agent. On the one hand, it insulates the aerosol generating agent during activation, and on the other hand, the silica gel coating can fit tightly with the aerosol generating agent to ensure that the combustion area of the agent remains relatively stable when the aerosol generating agent is ignited, and the flame will not spread to other surfaces.

[0004] However, the traditional silica gel coating of aerosol generating agents uses a dispensing process, that is, the medicine column is placed in a mold, and then liquid silica gel is poured into the mold. After the silica gel is cured, the medicine column and the silica gel are taken out together and placed in the device.

[0005] But the above method has the following problems: Due to the viscosity of silica gel during the process of dripping silica gel into the mold, there will be "jamming" between the silica gel and the mold, resulting in bubble voids. If the bubble voids are on the side close to the mold, they can be observed from the outside. If this void is on the side close to the medicine column, it is difficult to observe. The coated silica gel with voids causes the medicine column to explode and burn easily after being ignited, which will make the outside of the device have a high temperature and may also cause the device to catch fire; in addition, the pressure during the spraying of the fire extinguishing device is large, and the void area of the silica gel coating is prone to tear outward during spraying. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above deficiencies and provide an aerosol generating agent silica gel coating tooling and its coating method to solve the problems raised in the background art.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: An aerosol generating agent silica gel coating tooling includes a coating chamber with an open top. The top of the coating chamber is hinged with a first positioning plate, a second positioning plate, and a third positioning plate. The first positioning plate is provided with a first positioning hole on its surface for fitting with the outer side of the outer mold. The second positioning plate is provided with a second positioning hole on its surface for fitting with the outer side of the medicine column. The third positioning plate is provided with a third positioning hole on its surface for fitting with the outer side of the reinforcing mesh. The bottom of the coating chamber is provided with a positioning groove, and the positioning groove is fitted with the bottom of the positioning mold. The top of the positioning mold is fitted with the bottom of the outer mold.

[0008] Preferably, the lower side of the positioning mold is a cylindrical structure and is provided with an external thread, and the inner side of the positioning groove is provided with an internal thread, and the bottom of the positioning mold is in threaded fit with the positioning groove.

[0009] Preferably, the top of the positioning mold is in interference fit with the inner side of the bottom of the outer mold.

[0010] Preferably, the first positioning plate, the second positioning plate and the third positioning plate are all hinged to the top of the coating cabin through hinges.

[0011] Preferably, the propellant column is a cylindrical structure formed by pressing an aerosol generating agent.

[0012] Preferably, the outer mold and the reinforcing mesh are both cylindrical structures, and the positioning mold is a cylindrical structure.

[0013] Preferably, when the first positioning plate or the second positioning plate or the third positioning plate is in a closed state, the centers of the first positioning hole or the second positioning hole or the third positioning hole or the positioning mold are all on the same vertical line.

[0014] Preferably, a positioning boss is further provided at the center of the top of the positioning mold, and the positioning boss is matched with a limiting groove opened at the bottom of the propellant column.

[0015] The present invention also discloses a coating method for the above-mentioned aerosol generating agent silica gel coating tooling, which includes the following steps:

[0016] S1: After emptying the coating cabin, install the positioning mold in the positioning groove at the bottom of the coating cabin, determine the height of silica gel perfusion, and then pour in silica gel;

[0017] S2: Close the first positioning plate, and then insert the outer mold through the first positioning hole, and make the bottom of the outer mold cooperate with the top of the positioning mold;

[0018] S3: Close the second positioning plate, and then insert the propellant column through the second positioning hole. The propellant column enters the inside of the outer mold, and make the limiting groove at the bottom of the propellant column cooperate with the positioning boss at the top of the positioning mold;

[0019] S4: Open the first positioning plate and the second positioning plate, close the third positioning plate, and then insert the reinforcing mesh through the third positioning hole, so that the reinforcing mesh enters the gap between the outside of the propellant column and the inside of the outer mold;

[0020] S5: Open the third positioning plate, rotate the outer mold, and take out the positioning mold together;

[0021] S6: After drying and curing, remove the positioning mold, cut off the redundant part of the outer mold, and then reinstall the positioning mold in the positioning groove at the bottom of the coating cabin for the next round of production.

[0022] Further, it further includes S7: When the next round of production is carried out, since part of the silica gel is lost in the previous round of production, part of the silica gel is supplemented into the coating chamber; then steps S2 to S6 are repeated.

[0023] Advantages of the present invention:

[0024] 1. The present invention solves the technical problem that air bubbles are easily generated in the process of silica gel coating of the aerosol generating agent pellet. The entire coating tooling has a simple structure and is convenient to use, greatly improving the coating efficiency.

[0025] 2. When the outer mold of the present invention is inserted into the coating chamber, since the outer mold is in a cylindrical structure and its upper and lower positions are both open, when the outer mold is immersed into the liquid silica gel in the coating chamber, due to the principle of the communicating vessel, the silica gel liquid level inside the outer mold and the silica gel liquid level outside are always flush. The silica gel liquid level continuously immerses the inside of the outer mold. As long as the immersion speed does not change too much, it is not easy to generate air bubbles; when the bottom of the outer mold cooperates with the top of the positioning mold, the inside of the outer mold is already filled with liquid silica gel. This continuous immersion method can effectively prevent air bubbles from being generated in the liquid silica gel inside the outer mold.

[0026] 3. Before the pellet of the present invention is inserted, the inside of the outer mold is already filled with liquid silica gel. When the pellet is inserted into it at this time, the liquid silica gel level inside the outer mold rises and then discharges from the outer mold. In this way, the silica gel liquid level also continuously rises and finally discharges from the outer mold. As long as the liquid level rising speed does not change too much, it is not easy to generate air bubbles. After the limiting groove at the bottom of the pellet cooperates with the positioning boss at the top of the positioning mold, the silica gel liquid remains in the gap between the outside of the pellet and the inside of the outer mold; compared with the traditional operation method of dripping liquid silica gel into the gap between the outer mold and the pellet, the present invention is not likely to have the phenomenon that the silica gel "gets stuck" on the surface of the outer mold or the pellet and generates air bubble voids. The present invention makes most of the liquid silica gel inside the outer mold gradually discharge from above through the extrusion action of the pellet, isolating the possibility of air entering the silica gel inside the outer mold, so it is not easy to generate air bubbles. Description of the drawings

[0027] Figure 1 It is a three-dimensional structural schematic diagram of an aerosol generating agent silica gel coating tooling;

[0028] Figure 2 It is Figure 1 The cross-sectional structural schematic diagram of;

[0029] Figure 3 It is the state structural schematic diagram after the positioning mold corresponding to step S1 of the present invention is installed in the positioning groove;

[0030] Figure 4 is Figure 3 an enlarged structural schematic diagram of area A in

[0031] Figure 5 a state structural schematic diagram after the bottom of the outer mold corresponding to step S2 of the present invention is matched with the top of the positioning mold;

[0032] Figure 6 a state structural schematic diagram after the propellant charge is inserted into the inner part of the outer mold corresponding to step S3 of the present invention;

[0033] Figure 7 a state structural schematic diagram after the first positioning plate and the second positioning plate are opened and the third positioning plate is closed corresponding to step S4 of the present invention;

[0034] Figure 8 a state structural schematic diagram after the reinforcing mesh enters the gap between the outside of the propellant charge and the inside of the outer mold corresponding to step S4 of the present invention;

[0035] Figure 9 a structural schematic diagram after the outer mold together with the positioning mold is taken out corresponding to step S5 of the present invention;

[0036] Figure 10 a structural schematic diagram after the positioning mold is removed corresponding to step S6 of the present invention;

[0037] Figure 11 a structural schematic diagram after the redundant part of the outer mold is cut corresponding to step S6 of the present invention. Detailed implementation manners

[0038] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0039] As Figure 1 and 2 shown, an aerosol generating agent silica gel coating tooling includes a coating chamber 8 with an open top. A first positioning plate 1, a second positioning plate 2 and a third positioning plate 3 are hinged at the top of the coating chamber 8. A first positioning hole 1.1 for cooperating with the outside of the outer mold 4 is formed on the surface of the first positioning plate 1. A second positioning hole 2.1 for cooperating with the outside of the propellant charge 5 is formed on the surface of the second positioning plate 2. A third positioning hole 3.1 for cooperating with the outside of the reinforcing mesh 6 is formed on the surface of the third positioning plate 3. A positioning groove 8.1 is formed at the bottom of the coating chamber 8. The positioning groove 8.1 cooperates with the bottom of the positioning mold 7, and the top of the positioning mold 7 cooperates with the bottom of the outer mold 4.

[0040] Preferably, the lower side of the positioning die 7 is of a cylindrical structure and is provided with an external thread, and the inner side of the positioning groove 8.1 is provided with an internal thread, and the bottom of the positioning die 7 is in threaded fit with the positioning groove 8.1. The threaded connection method not only facilitates the installation and disassembly process of the positioning die 7, but also is not easy to fall off after installation and will not affect the coating process.

[0041] Preferably, the top of the positioning die 7 is in interference fit with the inner side of the bottom of the outer die 4. In this embodiment, the outer die 4 adopts a hard paper tube structure, and the interference fit method can make the bottom of the outer die 4 tightly sleeved on the top of the positioning die 7.

[0042] Preferably, the first positioning plate 1, the second positioning plate 2 and the third positioning plate 3 are all hinged to the top of the coating chamber 8 through hinges 9. Through the hinges 9, the hinging process between the above-mentioned positioning plates and the coating chamber 8 can be facilitated, and the opening and closing processes are made smoother.

[0043] Preferably, the propellant column 5 is of a cylindrical structure formed by pressing an aerosol generating agent. In this embodiment, the propellant column 5 is a dense propellant column structure formed by pressing aerosol generating agent powder through a corresponding pressing device.

[0044] Preferably, the outer die 4 and the reinforcing mesh 6 are both of a cylindrical structure, and the positioning die 7 is of a cylindrical structure.

[0045] Preferably, when the first positioning plate 1 or the second positioning plate 2 or the third positioning plate 3 is in a closed state, the centers of the first positioning hole 1.1 or the second positioning hole 2.1 or the third positioning hole 3.1 or the positioning die 7 are all on the same vertical line. After such a design, the positioning process can be facilitated, so that the matching positions among the outer die 4, the propellant column 5 and the reinforcing mesh 6 are accurate.

[0046] Preferably, a positioning boss 7.1 is further provided at the center of the top of the positioning die 7, and the positioning boss 7.1 is matched with the limiting groove opened at the bottom of the propellant column 5. After such a design, when the propellant column 5 is inserted into the outer die 4, by sleeving the limiting groove opened at the bottom of the propellant column 5 onto the positioning boss 7.1 at the top of the positioning die 7, the position of the propellant column 5 in the outer die 4 can be effectively prevented from shifting, which is beneficial to the subsequent insertion process of the reinforcing mesh 6.

[0047] Preferably, in this embodiment, the outer die 4 is of a hard paper tube structure, and the reinforcing mesh 6 is made of a metal mesh. The first positioning plate 1 or the second positioning plate 2 or the third positioning plate 3 is preferably made of a glass plate or a transparent plastic plate.

[0048] In addition, as Figure 1As shown, the first positioning plate 1 and the second positioning plate 2 are installed on the same side of the top of the coating cabin 8, while the third positioning plate 3 is installed on the other side of the top of the coating cabin 8, and the first positioning plate 1 is installed in a region closer to the inside of the coating cabin 8 relative to the second positioning plate 2.

[0049] The present invention also discloses a coating method for the above-mentioned aerosol generating agent silica gel coating tooling, which includes the following steps:

[0050] S1: After emptying the coating cabin 8, install the positioning mold 7 in the positioning groove 8.1 at the bottom of the coating cabin 8 (as shown in Figure 3 and 4 ), determine the height of silica gel perfusion, and then pour in silica gel;

[0051] S2: Close the first positioning plate 1, and then insert the outer mold 4 through the first positioning hole 1.1, and make the bottom of the outer mold 4 cooperate with the top of the positioning mold 7 (as shown in Figure 5 ); In this step, when the outer mold 4 is inserted into the coating cabin 8, since the outer mold 4 is a cylindrical structure and its upper and lower positions are both open, when the outer mold 4 is immersed into the liquid silica gel in the coating cabin 8, due to the principle of the communicating vessel, the silica gel liquid level inside the outer mold 4 and the silica gel liquid level outside are always flush, and the silica gel liquid level continuously immerses the inside of the outer mold 4. As long as the immersion speed does not change too much, it is not easy to generate bubbles; when the bottom of the outer mold 4 cooperates with the top of the positioning mold 7, the inside of the outer mold 4 is already filled with liquid silica gel. This continuous immersion method can effectively prevent bubbles from being generated in the liquid silica gel inside the outer mold 4.

[0052] S3: Close the second positioning plate 2, and then insert the medicine column 5 through the second positioning hole 2.1. The medicine column 5 enters the inside of the outer mold 4, and makes the limit groove at the bottom of the medicine column 5 cooperate with the positioning boss 7.1 at the top of the positioning mold 7 (as shown in Figure 6 ); In this step, since the inside of the outer mold 4 is already filled with liquid silica gel, when the medicine column 5 is inserted into it at this time, the liquid silica gel level inside the outer mold 4 rises and then discharges from the outer mold 4. In this way, the silica gel liquid level also continuously rises and finally discharges from the outer mold 4. As long as the liquid level rising speed does not change too much, it is not easy to generate bubbles. When the limit groove at the bottom of the medicine column 5 cooperates with the positioning boss 7.1 at the top of the positioning mold 7, the silica gel liquid remains in the gap between the outside of the medicine column 5 and the inside of the outer mold 4. Compared with the traditional operation method of dripping liquid silica gel into the gap between the outer mold and the medicine column, it is not easy for the present invention to have the phenomenon that the silica gel "gets stuck" on the surface of the outer mold or the medicine column and generates bubble voids. In the present invention, through the extrusion action of the medicine column 5, most of the liquid silica gel inside the outer mold 4 gradually discharges from the upper part, isolating the possibility of air entering the silica gel inside the outer mold 4, so it is not easy to generate bubbles.

[0053] S4: Open the first positioning plate 1 and the second positioning plate 2, close the third positioning plate 3 (as shown), and then insert the reinforcing mesh 6 into the third positioning hole 3.1 (as shown), so that the reinforcing mesh 6 enters the gap between the outside of the propellant column 5 and the inside of the outer mold 4. In this embodiment, the reinforcing mesh 6 can play a role in strengthening and supporting the propellant column, so that the propellant column is not prone to breakage during subsequent handling or transportation. Figure 7 shown), and then insert the reinforcing mesh 6 into the third positioning hole 3.1 (as Figure 8 shown), so that the reinforcing mesh 6 enters the gap between the outside of the propellant column 5 and the inside of the outer mold 4. In this embodiment, the reinforcing mesh 6 can play a role in strengthening and supporting the propellant column, so that the propellant column is not prone to breakage during subsequent handling or transportation.

[0054] S5: Open the third positioning plate 3, rotate the outer mold 4, and take it out together with the positioning mold 7 (as shown). Figure 9 shown);

[0055] S6: After drying and curing, remove the positioning mold 7 (as shown), and cut off the excess part of the outer mold 4 (as shown). Then reinstall the positioning mold 7 into the positioning groove 8.1 at the bottom of the cladding chamber 8 for the next round of production. In this embodiment, after the outer mold 4 and the positioning mold 7 are taken out together, the liquid silicone in the gap between the outside of the propellant column 5 and the inside of the outer mold 4 needs to be cured. Therefore, it can be cured by drying. After curing, the positioning mold 7 can be removed. In addition, the outer mold 4 on the surface of the propellant column itself can be retained and then installed into the cylinder body of the fire extinguishing device. Figure 10 shown), and cut off the excess part of the outer mold 4 (as Figure 11 shown). Then reinstall the positioning mold 7 into the positioning groove 8.1 at the bottom of the cladding chamber 8 for the next round of production. In this embodiment, after the outer mold 4 and the positioning mold 7 are taken out together, the liquid silicone in the gap between the outside of the propellant column 5 and the inside of the outer mold 4 needs to be cured. Therefore, it can be cured by drying. After curing, the positioning mold 7 can be removed. In addition, the outer mold 4 on the surface of the propellant column itself can be retained and then installed into the cylinder body of the fire extinguishing device.

[0056] Further, it also includes S7: When performing the next round of production, since a part of the silicone is lost in the previous round of production, a part of the silicone is supplemented into the cladding chamber 8; then repeat steps S2 to S6.

[0057] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments and the features in the embodiments in this application can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An aerosol generating agent silica gel coating tooling, comprising a coating chamber (8) with an open top, characterized in that: The top of the cladding chamber (8) is hingedly provided with a first positioning plate (1), a second positioning plate (2) and a third positioning plate (3). A first positioning hole (1.1) that mates with the outer side of the outer mold (4) is provided on the surface of the first positioning plate (1). A second positioning hole (2.1) that mates with the outer side of the propellant column (5) is provided on the surface of the second positioning plate (2). A third positioning hole (3.1) that mates with the outer side of the reinforcing mesh (6) is provided on the surface of the third positioning plate (3). A positioning groove (8.1) is provided at the bottom of the cladding chamber (8), and the positioning groove (8.1) mates with the bottom of the positioning mold (7). The top of the positioning mold (7) mates with the bottom of the outer mold (4); the top of the positioning mold (7) is in interference fit with the inner side of the bottom of the outer mold (4); the propellant column (5) is a cylindrical structure formed by pressing an aerosol generating agent.

2. The silica gel coating tool for an aerosol generating agent according to claim 1, wherein: The lower side of the positioning mold (7) is a cylindrical structure and is provided with an external thread, and an internal thread is provided inside the positioning groove (8.1). The bottom of the positioning mold (7) is in threaded fit with the positioning groove (8.1).

3. The silica gel coating tool for an aerosol generating agent according to claim 1, characterized in that: The first positioning plate (1), the second positioning plate (2) and the third positioning plate (3) are all hingedly connected to the top of the cladding chamber (8) through hinges (9).

4. The silica gel coating tool for an aerosol generating agent according to claim 1, wherein: The outer mold (4) and the reinforcing mesh (6) are both cylindrical structures, and the positioning mold (7) is a cylindrical structure.

5. An aerosol generating agent silica gel coating tool according to claim 4, characterized in that: When the first positioning plate (1) or the second positioning plate (2) or the third positioning plate (3) is in a closed state, the centers of the first positioning hole (1.1) or the second positioning hole (2.1) or the third positioning hole (3.1) or the positioning mold (7) are all on the same vertical line.

6. The silica gel coating tooling for an aerosol generating agent according to claim 1, characterized in that: A positioning boss (7.1) is further provided at the center of the top of the positioning mold (7), and the positioning boss (7.1) mates with a limiting groove provided at the bottom of the propellant column (5).

7. A coating method for the aerosol generating agent silica gel coating tooling according to any one of claims 1 to 6, characterized in that: It includes the following steps: S1: After emptying the cladding chamber (8), install the positioning mold (7) in the positioning groove (8.1) at the bottom of the cladding chamber (8), determine the height of silicone perfusion, and then pour in silicone; S2: Close the first positioning plate (1), then insert the outer mold (4) through the first positioning hole (1.1), and make the bottom of the outer mold (4) mate with the top of the positioning mold (7); S3: Close the second positioning plate (2), then insert the propellant column (5) through the second positioning hole (2.1). The propellant column (5) enters the inside of the outer mold (4), and make the limiting groove at the bottom of the propellant column (5) mate with the positioning boss (7.1) at the top of the positioning mold (7); S4: Open the first positioning plate (1) and the second positioning plate (2), close the third positioning plate (3), then insert the reinforcing mesh (6) through the third positioning hole (3.1), so that the reinforcing mesh (6) enters the gap between the outer side of the propellant column (5) and the inner side of the outer mold (4); S5: Open the third positioning plate (3), rotate the outer mold (4), and take out the positioning mold (7) together; S6: After drying and curing, remove the positioning mold (7), cut off the excess part of the outer mold (4), and then reinstall the positioning mold (7) into the positioning groove (8.1) at the bottom of the coating chamber (8) for the next round of production.

8. The coating method of the silica gel-coated tooling for the aerosol generating agent according to claim 7, characterized in that: It also includes S7: When conducting the next round of production, since a part of the silica gel is lost in the previous round of production, supplement a part of the silica gel into the coating chamber (8); then repeat steps S2 to S6.

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