Organic silicon supercritical foaming device and foaming method

Abstract

The invention relates to the technical field of supercritical foaming, in particular to an organic silicon supercritical foaming device and method.The organic silicon supercritical foaming device comprises a conveyor, a supporting plate is fixedly installed on the conveyor, a conveying belt is movably installed on the conveyor, an upper die mechanism is arranged on the conveyor, and a plurality of pairs of lower dies are symmetrically and fixedly installed on the conveying belt; each lower mold is fixedly provided with two guide shells, the upper mold mechanism is provided with a sealing mechanism, the sealing mechanism comprises a pair of connecting frames arranged on the upper mold mechanism, and a side plate which is in sliding connection with the guide shells is jointly and fixedly installed between the pair of connecting frames; the conveyor is controlled to operate to drive the conveying belt to move, the lower molds are separated from the side plates, the conveying belt drives the lower molds to move to the lower end of the conveyor, in the moving process, the pair of lower molds move mutually, and under the gravity of a foaming material, demolding and discharging work of the foaming material is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of supercritical foaming, and specifically to a silicone supercritical foaming device and a foaming method. Background Art

[0002] The silicone supercritical foaming technology is an advanced process that uses supercritical fluids to foam silicone materials under high pressure and high temperature conditions; this technology can prepare silicone foam materials with a microporous structure, high elasticity, lightweight, and excellent heat insulation performance, and is widely used in the fields of aerospace, medical, electronic packaging, automobiles, etc.

[0003] The Chinese patent with the publication number CN217098573U discloses a supercritical carbon dioxide compression molding foaming device, including a reaction cavity, a pipeline for the entry and exit of plates penetrates through one side of the reaction cavity, a cylindrical valve body sleeved inside the pipeline, a valve cover movably connected to one end of the cylindrical valve body away from the pipeline, and an array of circular plate frames arranged inside the reaction cavity.

[0004] The above patent has the advantage that within the allowable range of the area of the plate frame, more plates can be placed, enabling more plates to be foamed at one time, thereby improving work efficiency.

[0005] However, the above patent has the following deficiencies: during the demolding process, since the mold is an integral mold, the material is in full contact with the mold after foaming, increasing the contact area between the mold and the foamed material, making it difficult to reduce the contact area between the mold and the foamed material, resulting in difficulty in demolding the foamed material. Moreover, when spraying the mold release agent on the mold, manual intervention is required, the degree of automation is low, and situations such as missed spraying and untimely spraying of the mold release agent are likely to occur, thus affecting the production operation.

[0006] Therefore, the present invention provides a silicone supercritical foaming device and a foaming method that are convenient for demolding. Summary of the Invention

[0007] The purpose of the present invention is to provide a silicone supercritical foaming device and a foaming method to solve the problems raised in the above background art.

[0008] The technical solution of the present invention is: a silicone supercritical foaming device, including a conveyor, a support plate is fixedly installed on the conveyor, a conveyor belt is movably installed on the conveyor, an upper die mechanism is arranged on the conveyor, and a plurality of pairs of lower dies are symmetrically and fixedly installed on the conveyor belt. It is characterized in that: two guide shells are fixedly installed on each of the lower dies, a closing mechanism is arranged on the upper die mechanism, and the closing mechanism includes a pair of connecting frames arranged on the upper die mechanism, and a side plate slidably connected with the guide shells is fixedly installed between the pair of connecting frames; A spraying mechanism is arranged on the conveyor, and the spraying mechanism includes a fixed frame fixedly installed on the conveyor, an inlet pipe is fixedly installed on the fixed frame, a hose is connected to the inlet pipe, a spray pipe is connected to the end of the hose, a dredging component is jointly arranged between the upper die mechanism and the inlet pipe, a pneumatic mechanism is arranged on the upper die mechanism, and a movable component is jointly arranged between the conveyor and the pneumatic mechanism; The pneumatic mechanism includes two top shells arranged on the upper die mechanism, an air inlet valve is arranged on each of the top shells, a first piston rod is slidably installed inside each of the top shells, and an air pipe is fixedly installed on each of the top shells; A pushing mechanism is arranged on each of the lower dies, a magnetic attraction component is jointly arranged between the pushing mechanism and the air pipe, and a support component is jointly arranged between the conveyor and the plurality of lower dies.

[0009] Further, the upper die mechanism includes an installation frame fixedly installed on the conveyor, and the installation frame is fixed to the pair of connecting frames and the two top shells respectively. A hydraulic cylinder is arranged on the installation frame, an upper die adapted to the lower die is fixedly installed on the telescopic end of the hydraulic cylinder, and two side rods slidably connected with the installation frame are fixedly installed on the upper die, and the side rods are fixed to the first piston rod.

[0010] Further, a first interface and a second interface are fixedly installed on the upper die.

[0011] Further, an inclined plate adapted to the upper die is fixedly installed on each of the lower dies.

[0012] Further, the movable component includes two second piston rods respectively fixedly installed on the two first piston rods, a side shell is slidably installed on each of the second piston rods, a long sleeve fixedly connected with the fixed frame is fixedly installed on the side shell, a first spring is connected to the inner wall of the long sleeve, a connecting rod slidably connected with the long sleeve is connected to the end of the first spring, and the two connecting rods are fixed to the spray pipe.

[0013] Further, the dredging component includes a plug sleeve fixedly installed on the inner wall of the inlet pipe. A circular shell is fixedly installed on the upper mold. The inner wall of the circular shell is connected to a second spring. The end of the second spring is connected to a connecting bar. An inner rod slidably connected to the circular shell is fixedly installed on the connecting bar. The end of the connecting bar is fixedly installed with a sealing piece slidably connected to the inlet pipe. A plug block slidably connected to the plug sleeve is fixedly installed on the sealing piece.

[0014] Further, the end of the air pipe is connected to a third spring. The end of the air pipe is connected to a movable sleeve. The pushing mechanism includes a support shell fixedly installed on the lower mold. The inner wall of the support shell is connected to a fourth spring. The end of the fourth spring is connected to a movable piece movably connected to the lower mold. The magnetic attraction component includes a magnetic shell connected to the end of the third spring, and the magnetic shell is connected to the movable sleeve.

[0015] Further, the magnetic attraction component further includes a connecting pipe fixedly installed on the support shell. A magnetic port slidably connected to the magnetic shell is fixedly installed on the connecting pipe.

[0016] Further, the support component includes two guiding frames fixedly installed on the conveyor. Two support rings slidably connected to the guiding frames are symmetrically and fixedly installed on each lower mold.

[0017] A method for supercritical foaming of silicone, comprising the following steps: Step S1: Control the operation of the conveyor to drive the conveyor belt to move, so that the conveyor belt drives multiple pairs of lower molds to move to the lower end of the upper mold mechanism. By controlling the closing of the upper mold mechanism and the lower mold, foaming work is carried out on the silicone raw material conveyed into the inner sides of the upper mold mechanism and the lower mold. Step S2: During the downward movement of the upper mold mechanism, the dredging component is driven to move, so that the inlet pipe is opened, and a pair of lower molds below the spray pipe are sprayed with a release agent. At the same time, the upper mold mechanism drives the movable component to move through the pneumatic mechanism, so that the movable component drives the spray pipe to move. Step S3: After foaming is completed, the conveyor belt drives multiple pairs of lower molds to move, so that the lower molds move to the lower end of the conveyor for demolding work. When the lower molds move to the demolding station, the magnetic attraction component is used to connect the pushing mechanism and the pneumatic mechanism. When the upper mold mechanism moves downward, gas is generated through the pneumatic mechanism, and the gas moves into the pushing mechanism. Through the pushing mechanism, the foaming material adhered to the lower mold is separated from the lower mold.

[0018] The present invention provides a silicone supercritical foaming device and a foaming method through improvements. Compared with the prior art, the following improvements and advantages are achieved: First: The present invention controls the operation of the conveyor, enabling the conveyor belt to drive multiple pairs of lower molds to move. When a pair of lower molds moves to the foaming station, the side plate fits with the lower mold under the support of the guide shell. The hydraulic cylinder is controlled to move, causing the upper mold to close with a pair of lower molds through the extrusion inclined plate for foaming work. After foaming is completed, the conveyor is controlled to operate to drive the conveyor belt to move, separating the lower mold from the side plate, and the conveyor belt drives the lower mold to move to the lower end of the conveyor. During the movement, a pair of lower molds move relative to each other, and under the self-gravity of the foaming material, it is convenient for the foaming material to be demolded and discharged; Second: The present invention controls the downward movement of the upper mold, causing the upper mold to drive the plug block to move away from the plug sleeve through the round shell, the second spring, the connecting strip, and the sealing piece. The external conveyor for releasing agent is controlled to transport the releasing agent to the inside of the inlet pipe, and then it moves into the inside of the spray pipe through the inlet pipe and the hose, and is sprayed by the spray pipe to spray the releasing agent on a pair of lower molds at the current position. At the same time, the upper mold drives the side rod to move downward, causing the side rod to drive the second piston rod to move downward through the first piston rod, and the second piston rod squeezes the gas inside the side shell. The gas pushes the connecting rod through the long sleeve, causing the connecting rod to drive the spray pipe to move, thus facilitating the uniform spraying of the releasing agent on a pair of lower molds; Third: The present invention controls the downward movement of the upper mold through the mutual attraction between the magnetic shell and the magnetic port. The upper mold drives the first piston rod to move downward through the side rod, causing the movable rod to squeeze the gas inside the top shell. The gas moves to the inside of the support shell through the air pipe, the movable sleeve, the magnetic shell, the magnetic port, and the connecting pipe, and the gas pushes the movable piece, enabling the movable piece to push the foaming material adhered to the lower mold, thus facilitating the discharging of the foaming material adhered to the lower mold. Description of the Drawings

[0019] The following further explains the present invention with reference to the drawings and embodiments: Figure 1 It is a three-dimensional structure diagram of a silicone supercritical foaming device and a foaming method of the present invention; Figure 2 It is a three-dimensional structure diagram of the upper mold of a silicone supercritical foaming device and a foaming method of the present invention; Figure 3 It is a three-dimensional structure diagram of the lower mold of a silicone supercritical foaming device and a foaming method of the present invention; Figure 4 It is an exploded structure diagram of the side plate of a silicone supercritical foaming device and a foaming method of the present invention; Figure 5Schematic diagram of the explosion structure of the support shell of a silicone supercritical foaming device and foaming method of the present invention; Figure 6 Schematic three-dimensional structure diagram of the fixing frame of a silicone supercritical foaming device and foaming method of the present invention; Figure 7 Schematic three-dimensional structure diagram of the nozzle of a silicone supercritical foaming device and foaming method of the present invention; Figure 8 Schematic cross-sectional structure diagram of the inlet pipe of a silicone supercritical foaming device and foaming method of the present invention; Figure 9 Schematic three-dimensional structure diagram of the guiding frame of a silicone supercritical foaming device and foaming method of the present invention.

[0020] Explanation of reference numerals: 1, conveyor; 101, support plate; 2, conveyor belt; 3, mounting rack; 4, hydraulic cylinder; 5, upper mold; 6, side rod; 7, first interface; 8, second interface; 9, lower mold; 10, inclined plate; 11, guide shell; 12, connecting frame; 13, side plate; 14, top shell; 15, intake valve; 16, first piston rod; 17, second piston rod; 18, side shell; 19, long sleeve; 20, first spring; 21, connecting rod; 22, fixing frame; 23, inlet pipe; 24, hose; 25, nozzle; 26, plug sleeve; 27, round shell; 28, second spring; 29, inner rod; 30, connecting strip; 31, sealing piece; 32, plug block; 33, guiding frame; 34, support ring; 35, air pipe; 36, third spring; 37, magnetic shell; 38, movable sleeve; 39, support shell; 40, fourth spring; 41, movable piece; 42, connecting pipe; 43, magnetic port. Detailed implementation manners

[0021] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The present invention provides a silicone supercritical foaming device and foaming method by making improvements. The technical solution of the present invention is as follows: Such as Figures 1-9As shown in the figure, a silicone supercritical foaming device includes a conveyor 1. A support plate 101 is fixedly installed on the conveyor 1. A conveyor belt 2 is movably installed on the conveyor 1. An upper die mechanism is arranged on the conveyor 1. A plurality of pairs of lower dies 9 are symmetrically and fixedly installed on the conveyor belt 2. Two guide shells 11 are fixedly installed on each lower die 9. A closing mechanism is arranged on the upper die mechanism. The closing mechanism includes a pair of connecting frames 12 arranged on the upper die mechanism. A side plate 13 slidably connected to the guide shell 11 is fixedly installed between the pair of connecting frames 12. The upper die mechanism includes a mounting frame 3 fixedly installed on the conveyor 1. The mounting frame 3 is fixed to the pair of connecting frames 12 and two top shells 14 respectively. A hydraulic cylinder 4 is fixedly arranged on the mounting frame 3. An upper die 5 adapted to the lower die 9 is fixedly installed on the telescopic end of the hydraulic cylinder 4. Two side rods 6 slidably connected to the mounting frame 3 are fixedly installed on the upper die 5. The side rods 6 are fixed to the first piston rod 16. A first interface 7 and a second interface 8 are fixedly installed on the upper die 5. An inclined plate 10 adapted to the upper die 5 is fixedly installed on each lower die 9.

[0023] Specifically, the support plate 101 can support the conveyor belt 2 to meet the support conditions for extrusion foaming. The first interface 7 is connected to an external silicone conveying device, and the second interface 8 is connected to an external carbon dioxide conveying device. The staff controls the operation of the conveyor 1, so that the conveyor 1 drives the conveyor belt 2 to move, and the conveyor belt 2 drives a plurality of pairs of lower dies 9 to move. When a pair of lower dies 9 move to the foaming station, the side plate 13 fits with the lower die 9 under the support of the guide shell 11. The hydraulic cylinder 4 is controlled to move, so that the telescopic end of the hydraulic cylinder 4 extends to drive the upper die 5 to move downward, and the upper die 5 closes with a pair of lower dies 9 by pressing the inclined plate 10. The external silicone raw material conveying device is controlled to convey the silicone raw material to the inside of the upper die mechanism and the lower die 9, and then the external carbon dioxide conveying device is used to convey carbon dioxide to the inside of the upper die mechanism and the lower die 9 to carry out the foaming work on the silicone raw material. After the foaming is completed, the conveyor 1 is controlled to operate to drive the conveyor belt 2 to move, so that the lower die 9 is separated from the side plate 13, and the conveyor belt 2 drives the lower die 9 to move to the lower end of the conveyor 1. The lower die 9 drives the support ring 34 to move onto the guide frame 33, so that the guide frame 33 supports the lower die 9 through the support ring 34. During the movement, a pair of lower dies 9 move relative to each other, and under the self-gravity of the foaming material, it is convenient for the foaming material to be demolded and discharged.

[0024] In this embodiment, a spraying mechanism is provided on the conveyor 1. The spraying mechanism includes a fixed frame 22 fixedly installed on the conveyor 1. An inlet pipe 23 is fixedly installed on the fixed frame 22. A hose 24 is connected to the inlet pipe 23. The end of the hose 24 is connected to a spray pipe 25. A dredging component is jointly arranged between the upper die mechanism and the inlet pipe 23. A pneumatic mechanism is arranged on the upper die mechanism. An activity component is jointly arranged between the conveyor 1 and the pneumatic mechanism. The activity component includes two second piston rods 17 respectively fixedly installed on two first piston rods 16. A side shell 18 is slidably installed on each second piston rod 17. A long sleeve 19 fixedly connected to the fixed frame 22 is fixedly installed on the side shell 18. The inner wall of the long sleeve 19 is connected to a first spring 20. The end of the first spring 20 is connected to a connecting rod 21 slidably connected to the long sleeve 19. The two connecting rods 21 are fixed to the spray pipe 25. The dredging component includes a blocking sleeve 26 fixedly installed on the inner wall of the inlet pipe 23. A circular shell 27 is fixedly installed on the upper die 5. The inner wall of the circular shell 27 is connected to a second spring 28. The end of the second spring 28 is connected to a connecting strip 30. An inner rod 29 slidably connected to the circular shell 27 is fixedly installed on the connecting strip 30. A sealing piece 31 slidably connected to the inlet pipe 23 is fixedly installed at the end of the connecting strip 30. A blocking block 32 slidably connected to the blocking sleeve 26 is fixedly installed on the sealing piece 31.

[0025] Specifically, the worker controls the upper die 5 to move downward, so that the upper die 5 drives the blocking block 32 to move away from the blocking sleeve 26 through the circular shell 27, the second spring 28, the connecting strip 30 and the sealing piece 31. The worker controls the external conveyor demoulding agent device to convey the demoulding agent to the inside of the inlet pipe 23, and then through the inlet pipe 23 and the hose 24, it moves into the inside of the spray pipe 25 and is sprayed by the spray pipe 25 to spray the demoulding agent on a pair of lower dies 9 at the current position. At the same time, the upper die 5 drives the side rod 6 to move downward, so that the side rod 6 drives the second piston rod 17 to move downward through the first piston rod 16, so that the second piston rod 17 squeezes the gas inside the side shell 18, and the gas pushes the connecting rod 21 through the long sleeve 19, so that the connecting rod 21 drives the spray pipe 25 to move, so as to facilitate the uniform spraying of the demoulding agent on a pair of lower dies 9; When the upper die 5 moves upward, the second spring 28 can drive the blocking block 32 to move upward through its own elastic force through the connecting strip 30 and the sealing piece 31, so that the blocking block 32 cooperates with the blocking sleeve 26 to close the inlet pipe 23. At the same time, the first spring 20 drives the spray pipe 25 to move back to its original position through its own elastic force through the connecting rod 21.

[0026] In this embodiment, the pneumatic mechanism includes two top shells 14 provided on the upper die mechanism. An air inlet valve 15 is provided on each top shell 14. A first piston rod 16 is slidably installed inside each top shell 14. An air pipe 35 is fixedly installed on each top shell 14. The end of the air pipe 35 is connected to a third spring 36. The end of the air pipe 35 is connected to a movable sleeve 38. A pushing mechanism is provided on each lower die 9. The pushing mechanism includes a support shell 39 fixedly installed on the lower die 9. The inner wall of the support shell 39 is connected to a fourth spring 40. The end of the fourth spring 40 is connected to a movable piece 41 movably connected to the lower die 9. A magnetic attraction component is jointly provided between the pushing mechanism and the air pipe 35. A support component is jointly provided between the conveyor 1 and the plurality of lower dies 9. The magnetic attraction component includes a magnetic shell 37 connected to the end of the third spring 36, and the magnetic shell 37 is connected to the movable sleeve 38. The magnetic attraction component further includes a connecting pipe 42 fixedly installed on the support shell 39. A magnetic port 43 movably connected to the magnetic shell 37 is fixedly installed on the connecting pipe 42. The support component includes two guiding frames 33 fixedly installed on the conveyor 1. Two support rings 34 slidably connected to the guiding frames 33 are symmetrically and fixedly installed on each lower die 9.

[0027] Specifically, when a pair of lower dies 9 move to the demolding station, the positions of the two magnetic ports 43 exactly correspond to the magnetic shell 37. Under the magnetic attraction of the two magnetic ports 43, the magnetic shell 37 drives the movable sleeve 38 to move, so that the magnetic shell 37 fits with the magnetic port 43. By the mutual attraction of the magnetic shell 37 and the magnetic port 43, by controlling the upper die 5 to move downward, the upper die 5 drives the first piston rod 16 to move downward through the side rod 6, so that the movable rod squeezes the gas inside the top shell 14, and the gas moves to the inside of the support shell 39 through the air pipe 35, the movable sleeve 38, the magnetic shell 37, the magnetic port 43 and the connecting pipe 42, so that the gas pushes the movable piece 41, and the movable piece 41 can push the foaming material adhered to the lower die 9, thereby facilitating the blanking work of the foaming material adhered to the lower die 9; After the blanking is completed, the conveyor belt 2 drives the lower die 9 to move, so that the two magnetic ports 43 are misaligned and separated from the magnetic shell 37, reducing the magnetic attraction between the two magnetic ports 43 and the magnetic shell 37, so that the fourth spring 40 can drive the magnetic shell 37 to move back to its original position by using its own elastic force. When the upper die 5 moves upward, the first piston rod 16 is driven by the side rod 6 to move upward along the inside of the top shell 14, so that the first piston rod 16 inhales the outside gas into the inside of the top shell 14 through the air inlet valve 15. At the same time, the third spring 36 can drive the movable piece 41 to move back to fit with the lower die 9 by using its own elastic force.

[0028] A method for preparing organosilicon supercritical foam includes the following steps: Step S1: Control the conveyor 1 to operate, so that the conveyor 1 drives the conveyor belt 2 to move, and the conveyor belt 2 drives multiple pairs of the lower molds 9 to move to the lower end of the upper mold mechanism. By controlling the upper mold mechanism to close with the lower molds 9, foam the silicone raw material conveyed into the inner sides of the upper mold mechanism and the lower molds 9; Step S2: During the downward movement of the upper mold mechanism, drive the dredging component to move, so that the inlet pipe 23 is opened, and release the mold release agent to a pair of the lower molds 9 below the spray pipe 25. At the same time, the upper mold mechanism drives the movable component to move through the pneumatic mechanism, so that the movable component drives the spray pipe 25 to move; Step S3: After foaming is completed, drive multiple pairs of the lower molds 9 to move through the conveyor belt 2, so that the lower molds 9 move to the lower end of the conveyor 1 for demolding work. When the lower molds 9 move to the demolding station, use the magnetic attraction component to connect the pushing mechanism with the pneumatic mechanism. When the upper mold mechanism moves downward, generate gas through the pneumatic mechanism, so that the gas moves into the pushing mechanism, and through the pushing mechanism, the foamed material adhered to the lower molds 9 is separated from the lower molds 9.

[0029] Working principle: The worker controls the conveyor 1 to operate, so that the conveyor 1 drives the conveyor belt 2 to move, and the conveyor belt 2 drives multiple pairs of the lower molds 9 to move. When a pair of the lower molds 9 move to the foaming station, the side plate 13 fits with the lower molds 9 under the support of the guide shell 11. Control the hydraulic cylinder 4 to move, so that the telescopic end of the hydraulic cylinder 4 extends to drive the upper mold 5 to move downward, so that the upper mold 5 closes with a pair of the lower molds 9 through the extrusion inclined plate 10. Control the external equipment for conveying silicone raw material to convey the silicone raw material to the inner sides of the upper mold mechanism and the lower molds 9, and then convey carbon dioxide to the inner sides of the upper mold mechanism and the lower molds 9 through the external equipment for conveying carbon dioxide to foam the silicone raw material. After foaming is completed, control the conveyor 1 to operate to drive the conveyor belt 2 to move, so that the lower molds 9 are separated from the side plate 13, and the conveyor belt 2 drives the lower molds 9 to move to the lower end of the conveyor 1. The lower molds 9 drive the support ring 34 to move onto the guide frame 33, so that the guide frame 33 supports the lower molds 9 through the support ring 34. During the movement, a pair of the lower molds 9 move relative to each other, and under the self-weight of the foamed material, carry out demolding and blanking work on the foamed material; By controlling the upper mold 5 to move downward, the upper mold 5 drives the block 32 to move away from the blocking sleeve 26 through the round shell 27, the second spring 28, the connecting strip 30 and the sealing sheet 31, and controls the external release agent delivery device to deliver the release agent to the inner side of the inlet pipe 23, and then moves into the inner side of the nozzle 25 through the inlet pipe 23 and the hose 24, and the nozzle 25 sprays the release agent to the pair of lower molds 9 at the current position. At the same time, the upper mold 5 drives the side rod 6 to move downward, so that the side rod 6 drives the second piston rod 17 to move downward through the first piston rod 16, so that the second piston rod 17 squeezes the gas inside the side shell 18, so that the gas pushes the connecting rod 21 through the long sleeve 19, so that the connecting rod 21 drives the nozzle 25 to move, and the release agent is sprayed evenly on the pair of lower molds 9; Through the mutual attraction between the magnetic shell 37 and the magnetic mouth 43, the upper mold 5 is controlled to move downward, so that the upper mold 5 drives the first piston rod 16 to move downward through the side rod 6, so that the movable rod squeezes the gas inside the top shell 14, and the gas moves to the inside of the support shell 39 through the air pipe 35, the movable sleeve 38, the magnetic shell 37, the magnetic mouth 43 and the connecting pipe 42, so that the gas pushes the movable sheet 41, so that the movable sheet 41 can push the foaming material adhered to the lower mold 9, and perform the material discharge work on the foaming material adhered to the lower mold 9.

[0030] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. An organosilicon supercritical foaming device, comprising a conveyor (1), a support plate (101) is fixedly installed on the conveyor (1), a conveyor belt (2) is movably installed on the conveyor (1), an upper die mechanism is arranged on the conveyor (1), and a plurality of pairs of lower dies (9) are symmetrically and fixedly installed on the conveyor belt (2), characterized in that: Two guide shells (11) are fixedly installed on each of the lower molds (9). A closing mechanism is arranged on the upper die mechanism. The closing mechanism includes a pair of connecting frames (12) arranged on the upper die mechanism. A side plate (13) that is slidably connected to the guide shell (11) is fixedly installed between the pair of connecting frames (12). A spraying mechanism is arranged on the conveyor (1). The spraying mechanism includes a fixed frame (22) fixedly installed on the conveyor (1). An inlet pipe (23) is fixedly installed on the fixed frame (22). A hose (24) is connected to the inlet pipe (23). A spray pipe (25) is connected to the end of the hose (24). A dredging assembly is jointly arranged between the upper die mechanism and the inlet pipe (23). A pneumatic mechanism is arranged on the upper die mechanism. An activity assembly is jointly arranged between the conveyor (1) and the pneumatic mechanism. The pneumatic mechanism includes two top shells (14) arranged on the upper die mechanism. An air inlet valve (15) is arranged on each of the top shells (14). A first piston rod (16) is slidably installed inside each of the top shells (14). An air pipe (35) is fixedly installed on each of the top shells (14). A pushing mechanism is arranged on each of the lower molds (9). A magnetic attraction assembly is jointly arranged between the pushing mechanism and the air pipe (35). A support assembly is jointly arranged between the conveyor (1) and the plurality of lower molds (9).

2. The silicone supercritical foaming device according to claim 1, characterized in that: The upper die mechanism includes a mounting frame (3) fixedly installed on the conveyor (1). The mounting frame (3) is respectively fixed to the pair of connecting frames (12) and the two top shells (14). A hydraulic cylinder (4) is arranged on the mounting frame (3). An upper die (5) adapted to the lower mold (9) is fixedly installed on the telescopic end of the hydraulic cylinder (4). Two side rods (6) that are slidably connected to the mounting frame (3) are fixedly installed on the upper die (5). The side rods (6) are fixed to the first piston rod (16).

3. The silicone supercritical foaming device according to claim 2, characterized in that: A first interface (7) and a second interface (8) are fixedly installed on the upper die (5).

4. The silicone supercritical foaming device according to claim 3, characterized in that: An inclined plate (10) adapted to the upper die (5) is fixedly installed on each of the lower molds (9).

5. The silicone supercritical foaming device according to claim 2, characterized in that: The activity assembly includes two second piston rods (17) respectively fixedly installed on the two first piston rods (16). A side shell (18) is slidably installed on each of the second piston rods (17). A long sleeve (19) fixed to the fixed frame (22) is fixedly installed on the side shell (18). A first spring (20) is connected to the inner wall of the long sleeve (19). The end of the first spring (20) is connected to a connecting rod (21) that is slidably connected to the long sleeve (19). The two connecting rods (21) are fixed to the spray pipe (25).

6. The silicone supercritical foaming device according to claim 5, wherein: The dredging component includes a plug sleeve (26) fixedly installed on the inner wall of the inlet pipe (23). A circular shell (27) is fixedly installed on the upper mold (5). A second spring (28) is connected to the inner wall of the circular shell (27). The end of the second spring (28) is connected to a connecting strip (30). An inner rod (29) slidably connected to the circular shell (27) is fixedly installed on the connecting strip (30). A sealing piece (31) slidably connected to the inlet pipe (23) is fixedly installed at the end of the connecting strip (30). A plug block (32) slidably connected to the plug sleeve (26) is fixedly installed on the sealing piece (31).

7. An organosilicon supercritical foaming device according to claim 4, characterized in that: A third spring (36) is connected to the end of the air pipe (35). An activity sleeve (38) is connected to the end of the air pipe (35). The pushing mechanism includes a support shell (39) fixedly installed on the lower mold (9). A fourth spring (40) is connected to the inner wall of the support shell (39). The end of the fourth spring (40) is connected to an activity piece (41) movably connected to the lower mold (9). The magnetic attraction component includes a magnetic shell (37) connected to the end of the third spring (36), and the magnetic shell (37) is connected to the activity sleeve (38).

8. The silicone supercritical foaming device according to claim 7, wherein: The magnetic attraction component further includes a connecting pipe (42) fixedly installed on the support shell (39). A magnetic port (43) slidably connected to the magnetic shell (37) is fixedly installed on the connecting pipe (42).

9. An organosilicon supercritical foaming device according to claim 8, characterized in that: The support component includes two guiding frames (33) fixedly installed on the conveyor (1). Two support rings (34) slidably connected to the guiding frames (33) are symmetrically and fixedly installed on each lower mold (9).

10. A method for supercritical foaming of silicone, which is applied to a silicone supercritical foaming device according to any one of claims 1-9, characterized in that: It includes the following steps: Step S1: Control the conveyor (1) to operate, so that the conveyor (1) drives the conveyor belt (2) to move, and the conveyor belt (2) drives multiple pairs of lower molds (9) to move to the lower end of the upper mold mechanism. By controlling the upper mold mechanism to close with the lower mold (9), foaming work is carried out on the silicone raw material conveyed into the inner sides of the upper mold mechanism and the lower mold (9). Step S2: During the downward movement of the upper mold mechanism, the upper mold mechanism drives the dredging component to move, so that the inlet pipe (23) is opened, and a pair of lower molds (9) below the spray pipe (25) are sprayed with a release agent. At the same time, the upper mold mechanism drives the activity component to move through the pneumatic mechanism, and the activity component drives the spray pipe (25) to move. Step S3: After foaming is completed, the conveyor belt (2) drives multiple pairs of the lower molds (9) to move, so that the lower molds (9) move to the lower end of the conveyor (1) for demolding work. When the lower molds (9) move to the demolding station, the magnetic attraction assembly is used to connect the pushing mechanism with the pneumatic mechanism. When the upper mold mechanism moves downward, gas is generated by the pneumatic mechanism, and the gas moves into the pushing mechanism. Through the pushing mechanism, the foaming material adhered to the lower molds (9) is separated from the lower molds (9).

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