An extrusion device for producing solution-polymerized styrene-butadiene rubber

Abstract

The present invention relates to the technical field of rubber extrusion, and in particular to an extrusion device for producing solution-polymerized styrene butadiene rubber. The present invention comprises a mounting seat, the mounting seat is fixedly connected to a material storage shell, the mounting seat and the material storage shell are commonly fixedly connected to a first fixed shell, the first fixed shell is fixedly connected to a symmetrically distributed first fixed tube, the first fixed tube is sealingly and slidingly connected to a first sealed shell and a second sealed shell, the mounting seat is fixedly connected to a symmetrically distributed first electric telescopic rod and a symmetrically distributed second electric telescopic rod, and the symmetrically distributed first fixed tubes are commonly connected to a vacuum suction tube. The present invention drives the rubber to move by the first sealed shell and the second sealed shell, so that the rubber between the first sealed shell and the second sealed shell is vacuum adsorbed in a completely enclosed space, the adsorption effect is good, and the cross-sectional area of ​​the rubber is small, so the gas can be discharged faster, preventing the gas in the rubber from affecting the quality of rubber molding.

Description

Technical Field

[0001] The invention relates to the technical field of rubber extrusion, in particular to an extrusion device for producing solution-polymerized styrene-butadiene rubber. Background Art

[0002] Solution polystyrene butadiene rubber is a synthetic rubber prepared by anionic polymerization. Compared with ordinary rubber, it has better wear resistance and low temperature performance and is widely used. In the process of extrusion molding of solution polystyrene butadiene rubber, the rubber raw material needs to be put into the extruder, and the rubber raw material is heated and stirred by the extruder to melt and mix the rubber raw material. Finally, the heated rubber is extruded into the mold by extrusion. However, in the process of putting the raw material into the extruder, some gas will also enter the extruder with the rubber raw material. In the process of heating the rubber, some substances in the rubber raw material will also release gas when heated, so that bubbles are generated in the molten rubber raw material. If the gas is not removed, the gas will enter the mold and follow the rubber molding, which will cause bubbles in the molded rubber and reduce the quality of the rubber after molding. In general, a hole is opened in the middle of the extruder, and a vacuum pump is connected to the hole in the middle of the extruder to discharge the gas in the rubber through the vacuum pump. However, the existing device has the following problems:

[0003] 1. Since the vacuum pump is directly connected to the extruder and the material is continuously fed inside the extruder, the vacuum adsorption part cannot be completely sealed, resulting in low vacuum degree during vacuum adsorption and poor gas exhaust effect.

[0004] 2. Since the cross-sectional area of ​​the rubber during transportation is large and the vertical length is long, some of the gas located on the lower side of the rubber has a long path to move upward, so that some of the gas has not been completely discharged and has passed through the position where the vacuum pump is connected, resulting in poor gas discharge effect. Summary of the invention

[0005] In order to overcome the disadvantages that gas is easily generated in the rubber during the rubber extrusion process and the existing device has poor gas exhaust effect, the present invention provides an extrusion device for the production of solution-polymerized styrene-butadiene rubber.

[0006] The technical scheme is as follows: An extrusion device for producing solution-polymerized styrene-butadiene rubber comprises a mounting seat, the mounting seat is fixedly connected to a material storage shell, the mounting seat is fixedly connected to a rotating motor on a side close to the material storage shell, the mounting seat and the material storage shell are jointly fixedly connected to a first fixed shell, the first fixed shell is located on a side of the material storage shell away from the rotating motor, a second fixed shell is fixedly connected to the interior of the first fixed shell, the second fixed shell is communicated with the material storage shell, a heating plate is arranged in the second fixed shell, an auger is fixedly connected to the output shaft of the rotating motor, the auger is rotatably connected to the second fixed shell and the material storage shell, the first fixed shell is away from the material storage shell A symmetrically distributed first fixed tube is fixedly connected to one side of the housing, a first connecting tube is connected between the first fixed tube and the second fixed shell, the first fixed tube is sealingly and slidably connected with a first sealed shell and a second sealed shell, the mounting seat is fixedly connected with a symmetrically distributed first electric telescopic rod and a symmetrically distributed second electric telescopic rod, the telescopic end of the first electric telescopic rod is fixedly connected to the adjacent first sealed shell, the telescopic end of the second electric telescopic rod is fixedly connected to the adjacent second sealed shell, the second fixed shell is fixedly connected with an extrusion shell, the extrusion shell and the first fixed tube are connected with a second connecting tube, and the symmetrically distributed first fixed tubes are commonly connected with a vacuum suction tube.

[0007] More preferably, the vacuum suction pipe is connected to an external vacuum pump, the vacuum suction pipe is fixedly connected to the second fixed shell, the vacuum suction pipe is located between the adjacent first connecting pipe and the adjacent second connecting pipe, the first sealing shell is sealed and cooperated with the adjacent first connecting pipe and the vacuum suction pipe, the second sealing shell is sealed and cooperated with the adjacent second connecting pipe and the vacuum suction pipe, and an insulation shell is provided on the side of the extrusion shell away from the second fixed shell.

[0008] More preferably, the second fixed shell is fixedly connected with a conduit, the conduit connects the extrusion shell and the second fixed shell, and a one-way pressure valve is arranged in the conduit.

[0009] More preferably, the extrusion shell is sealingly and slidingly connected with a first piston, the first piston is sealingly and slidingly connected to the conduit, a limit ring which cooperates with the first piston is arranged in the extrusion shell, a fixed block is fixedly connected to the side of the first piston away from the second fixed shell, a second fixed tube is fixedly connected between the symmetrically distributed second connecting tubes, the second fixed tubes are sealingly and slidingly connected with symmetrically distributed second pistons, the symmetrically distributed second pistons are respectively sealingly and slidingly connected to adjacent second connecting tubes, the second piston is fixedly connected with a limit block, and the limit block cooperates with the fixed block in limiting position.

[0010] More preferably, a groove is provided on the fixed block, an inclined surface is provided on the limit block, the fixed block cooperates with the limit block through the groove thereon, a tension spring is connected between the second piston and the second fixed tube, and a hole is provided on the second piston.

[0011] More preferably, a hydraulic shell is fixedly connected to the inner side of the first fixed shell, a first rotating ring is fixedly connected to the outer side of the first fixed shell, the hydraulic shell is slidably and rotatably connected to a rotating column, the rotating column is threadedly matched with the first rotating ring, the hydraulic shell is fixedly connected to and connected to a third connecting pipe, the end of the third connecting pipe away from the hydraulic shell is connected to the extrusion shell, the hydraulic shell is sealingly and slidably connected to a third piston, and a spring is connected between the third piston and the rotating column.

[0012] More preferably, it also includes first fixing plates that are equidistant and centrally symmetrically distributed, the first fixing plates that are equidistant and centrally symmetrically distributed are all fixed to the auger, and the auger is fixed with second fixing plates that are equidistant and centrally symmetrically distributed near the first fixing plates that are equidistant and centrally symmetrically distributed, and the centrally symmetrically distributed first fixing plates and the adjacent centrally symmetrically distributed second fixing plates are staggered.

[0013] More preferably, the first fixing plate and the second fixing plate are both arc-shaped, and the bending directions of the arcs are opposite, the second fixing plate is in contact with the second fixing shell, and there is a gap between the first fixing plate and the second fixing shell.

[0014] More preferably, a third fixed shell distributed equidistantly is fixedly connected to a side of the second fixed shell close to the first fixed plate, the third fixed shell is rotatably connected to a second rotating ring, the second rotating ring is fixedly connected to the auger, the second rotating ring is rotatably connected to a symmetrically distributed rotating shaft, a transmission wheel is fixedly connected to a side of the rotating shaft close to the adjacent third fixed shell, a transmission ring that cooperates with the adjacent transmission wheel is fixed in the third fixed shell, and a first stirring rod is fixedly connected to a side of the rotating shaft away from the adjacent third fixed shell.

[0015] More preferably, circumferentially distributed second stirring rods are fixedly connected in the second fixed shell, and the circumferentially distributed second stirring rods are located between the equidistantly distributed first fixed plates.

[0016] The beneficial effects produced by utilizing the above technical solution are as follows: the present invention drives the rubber to move through the first sealing shell and the second sealing shell, so that the rubber between the first sealing shell and the second sealing shell is vacuum adsorbed in a completely enclosed space, with good adsorption effect, and the cross-sectional area of ​​the rubber is small, so the gas can be discharged faster, preventing the gas in the rubber from affecting the quality of rubber molding.

[0017] In the process of extruding the rubber into the mold, when the pressure of the rubber in the mold is too high, the rubber enters the second fixed shell through the conduit and the one-way pressure valve therein, preventing the excessive pressure from causing excessive internal stress of the rubber and affecting the molding effect.

[0018] The present invention maintains a constant pressure in the extrusion shell through the first piston, thereby ensuring the quality of rubber molding, preventing the rubber from having different densities due to excessive or insufficient pressure, and improving the quality of the rubber.

[0019] The present invention rotates the first fixing plate and the second fixing plate to repeatedly mix the melted rubber inside and outside, and makes the rubber contact with the second fixing shell evenly. The heating plate on the second fixing shell evenly heats the rubber, so that the rubber is heated more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the first fixed shell and the second fixed shell of the present invention;

[0022] Figure 3 It is a three-dimensional structural cross-sectional view of the material storage shell and the first fixed shell of the present invention;

[0023] Figure 4 It is a three-dimensional structural cross-sectional view of the first fixed tube, the first sealing shell and the second sealing shell of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the first piston and the fixed block of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the hydraulic housing and the first rotating ring of the present invention;

[0026] Figure 7 It is a three-dimensional structural cross-sectional view of the hydraulic housing and the first rotating ring of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the auger and the first fixing plate of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the first fixing plate and the second fixing plate of the present invention;

[0029] Fig.10 It is an exploded view of the three-dimensional structure of the second fixed plate, the third fixed shell and the second rotating ring of the present invention.

[0030] Markings in the accompanying drawings: 1-mounting seat, 2-material storage shell, 3-rotating motor, 4-first fixed shell, 5-second fixed shell, 6-auger, 7-first connecting pipe, 8-first fixed pipe, 9-first sealing shell, 91-first electric telescopic rod, 10-second sealing shell, 101-second electric telescopic rod, 11-second connecting pipe, 12-extrusion shell, 13-vacuum suction pipe, 14-insulation shell, 15-conduit, 20-first piston, 21-fixed block, 22-second fixed pipe, 23-second piston, 24-limiting block, 25-tension spring, 30-hydraulic shell, 31-first rotating ring, 32-rotating column, 33-third connecting pipe, 34-third piston, 35-spring, 40-first fixed plate, 41-second fixed plate, 42-third fixed shell, 43-second rotating ring, 44-rotating shaft, 45-transmission wheel, 46-first stirring rod, 47-second stirring rod. DETAILED DESCRIPTION

[0031] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0032] In the process of rubber extrusion molding, it is necessary to put the rubber raw materials into the extruder, heat the rubber raw materials through the extruder, stir the rubber, and finally extrude the heated rubber into the mold by extrusion. However, in the process of putting the raw materials into the extruder, some gas will also enter the extruder with the rubber raw materials. If the bubbles are not removed, the bubbles will enter the mold and follow the rubber molding, which will cause bubbles to exist in the molded rubber and reduce the quality of the molded rubber. Although the existing device absorbs gas through the vacuum pump, it is still impossible to completely seal the vacuum adsorbed part, resulting in low vacuum degree during vacuum adsorption. Since the cross-sectional area of ​​the rubber is large and the vertical length is large during transportation of the extruder, some of the gas on the lower side of the rubber moves upward through a long path, so that some of the gas has passed through the position connected to the vacuum pump before it is completely discharged, resulting in poor gas discharge effect.

[0033] Embodiment 1: A solution-polymerized styrene-butadiene rubber production extrusion device, such as Figure 1-Figure 4As shown, it includes a mounting base 1, a material storage shell 2 is fixedly connected to the right side of the mounting base 1, a rotating motor 3 is fixedly connected to the right side of the mounting base 1, a first fixed shell 4 is fixedly connected to the mounting base 1, the right side of the first fixed shell 4 is fixedly connected to the left side of the material storage shell 2, a second fixed shell 5 is fixedly connected to the interior of the first fixed shell 4, the second fixed shell 5 is communicated with the material storage shell 2, a heating plate is arranged in the second fixed shell 5 for heating the rubber raw material, an auger 6 is fixedly connected to the output shaft of the rotating motor 3, the auger 6 is rotatably connected to the second fixed shell 5 and the material storage shell 2, the auger 6 is used to transport the rubber raw material to the left, two first fixed pipes 8 symmetrically distributed front and back are fixedly connected to the left side of the first fixed shell 4, a first connecting pipe 7 is communicated between the first fixed pipe 8 and the second fixed shell 5, the first fixed pipe 8 is sealingly and slidably connected to the first sealing shell 9 and the second sealing shell 10, the first sealing shell 9 is located on the right side of the second sealing shell 10, two first electric telescopic rods 91 symmetrically distributed front and back and two second electric telescopic rods 101 symmetrically distributed front and back are fixedly connected to the mounting base 1, The telescopic end of an electric telescopic rod 91 is fixedly connected to the adjacent first sealing shell 9, and the telescopic end of the second electric telescopic rod 101 is fixedly connected to the adjacent second sealing shell 10. The first fixed tube 8 is connected to the second connecting tube 11, and the second connecting tube 11 is located on the left side of the adjacent first connecting tube 7. The second fixed shell 5 is fixedly connected to the extrusion shell 12, and the left end of the extrusion shell 12 is connected to the rubber mold, which is not shown in the figure. The second connecting tube 11 is connected to the extrusion shell 12, and the two symmetrically distributed first fixed tubes 8 are commonly connected to a vacuum suction tube 13, which is connected to an external vacuum pump, and the vacuum suction tube 13 is fixedly connected to the second fixed shell 5. The vacuum suction tube 13 is located between the adjacent first connecting tube 7 and the adjacent second connecting tube 11, and is used to extract the gas in the molten rubber. The first sealing shell 9 is sealed with the adjacent first connecting tube 7 and the vacuum suction tube 13, and the second sealing shell 10 is sealed with the adjacent second connecting tube 11 and the vacuum suction tube 13. The side of the extrusion shell 12 away from the second fixed shell 5 is provided with an insulation shell 14. The heat-insulating shell 14 is used to keep the rubber in the extruded shell 12 warm.

[0034] like Figure 5 As shown, a conduit 15 is fixedly connected to the left side of the second fixed shell 5, and the conduit 15 connects the extrusion shell 12 with the second fixed shell 5. A one-way pressure valve is arranged in the conduit 15 to move the excess rubber in the extrusion shell 12 into the conduit 15 to prevent the pressure of the rubber in the mold from being too high.

[0035] like Figure 5 and Figure 6As shown, the extrusion shell 12 is sealed and slidably connected with the first piston 20, and the first piston 20 is sealed and slidably connected with the conduit 15. A limiting ring that cooperates with the first piston 20 is provided in the extrusion shell 12 to limit the first piston 20 from moving to the left. A fixed block 21 is fixedly connected to the left side of the first piston 20, and a groove is provided on the left part of the fixed block 21. The second fixed pipe 22 passes through the groove on the fixed block 21. The second fixed pipe 22 is fixedly connected between the two second connecting pipes 11 symmetrically distributed front and back. The second fixed pipe 22 is sealed and slidably connected with the two second connecting pipes 11 symmetrically distributed front and back. A second piston 23 is provided, and the two symmetrically distributed second pistons 23 are sealed and slidably connected with the adjacent second connecting pipes 11 respectively. A hole is opened on the second piston 23, and the second piston 23 is fixedly connected with a limiting block 24. The limiting block 24 is provided with an inclined surface on the left part away from the side of the adjacent second piston 23, so that the limiting block 24 can enter the hole of the fixed block 21 more easily. The fixed block 21 is limitedly matched with the limiting block 24 through the groove thereon. A tension spring 25 is connected between the second piston 23 and the second fixed pipe 22, and the tension spring 25 is used to drive the adjacent second piston 23 to reset.

[0036] like Figure 6 and Figure 7 As shown, a hydraulic housing 30 is fixedly connected to the inner side of the first fixed housing 4, a first rotating ring 31 is fixedly connected to the outer side of the first fixed housing 4, a rotating column 32 is slidably and rotatably connected to the hydraulic housing 30, and the rotating column 32 is threadedly matched with the first rotating ring 31. When the rotating column 32 is twisted, the rotating column 32 moves under the limit of the thread on the first rotating ring 31, and the hydraulic housing 30 is fixedly connected and connected to a third connecting pipe 33. The lower end of the third connecting pipe 33 is connected to the extrusion housing 12, and the connecting port is located on the right side of the first piston 20. The hydraulic housing 30 is sealed and slidably connected to the third piston 34. The third piston 34 A spring 35 is connected to the rotating column 32, and the spring 35 is used to maintain the pressure under the third piston 34. The lower side of the third piston 34 and the hydraulic shell 30, the third connecting pipe 33, and the right side of the first piston 20 and the extrusion shell 12 are filled with hydraulic oil. When in use, the position of the rotating column 32 is adjusted to squeeze the spring 35, and the spring 35 squeezes the third piston 34 to control the pressure under the third piston 34. The pressure of the first piston 20 is controlled by the transmission of the hydraulic oil, thereby controlling the pressure applied to the rubber during rubber molding and improving the quality of rubber molding.

[0037] When using the device to extrude rubber, the staff first puts the rubber raw material into the storage shell 2, and then starts the rotating motor 3 and the heating plate on the second fixed shell 5. The rotating motor 3 drives the auger 6 to rotate clockwise (from left to right). During the rotation process, the auger 6 drives the rubber raw material to move left along the second fixed shell 5. At the same time, the rubber raw material is heated under the action of the heating plate on the second fixed shell 5, so that the rubber raw material is melted to form molten rubber, and the molten rubber gradually moves to the left side of the second fixed shell 5.

[0038] After the melted rubber moves to the left side of the second fixed shell 5, the two first electric telescopic rods 91 and the two second electric telescopic rods 101 are started, and the two first electric telescopic rods 91 and the two second electric telescopic rods 101 respectively drive the adjacent first sealed shells 9 and second sealed shells 10 to move. Taking the first sealed shells 9 and second sealed shells 10 at the front side as an example, initially, the first sealed shell 9 at the front side is Figure 4 As shown, the melted rubber in the second fixed shell 5 enters the first fixed tube 8 through the first connecting tube 7 and is located between the first sealed shell 9 and the second sealed shell 10. When the gap between the first sealed shell 9 and the second sealed shell 10 is filled, the first electric telescopic rod 91 and the second electric telescopic rod 101 are started, and the first electric telescopic rod 91 and the second electric telescopic rod 101 drive the first sealed shell 9 and the second sealed shell 10 on the front side to move left synchronously (the subsequent movement of the first sealed shell 9 and the second sealed shell 10 are driven by the first electric telescopic rod 91 and the second electric telescopic rod 101, and the first electric telescopic rod 91 and the second electric telescopic rod 101 are omitted in the following) The second electric telescopic rod 101 moves, when the right end face of the second sealing shell 10 is about to contact the vacuum suction tube 13, the first sealing shell 9 blocks the first connecting tube 7, and then the external vacuum pump is started to extract the gas in the vacuum suction tube 13, and then the first sealing shell 9 and the second sealing shell 10 continue to move, so that the space between the first sealing shell 9 and the second sealing shell 10 is connected with the vacuum suction tube 13, so that the melted rubber of the first sealing shell 9 and the second sealing shell 10 is in a vacuum environment, and the gas in the rubber is extracted by the vacuum pump, and the gas between the melted rubber is discharged to prevent the gas in the rubber from affecting the quality of rubber molding.

[0039] When the gas in the rubber in the first fixed tube 8 is exhausted, the first sealing shell 9 and the second sealing shell 10 on the front side continue to move to the left. During the movement, the first sealing shell 9 gradually blocks the vacuum suction tube 13. After the first sealing shell 9 completes the blocking of the vacuum suction tube 13, it continues to move. The right side of the second sealing shell 10 gradually moves to the left side of the second connecting tube 11, so that the space between the second sealing shell 10 and the first sealing shell 9 is connected with the second connecting tube 11. When the right side of the second sealing shell 10 moves to the left side of the second connecting tube 11, it stops moving. The first sealing shell 9 continues to move to the left, squeezing the space between the second sealing shell 10 and the first sealing shell 9. The melted rubber is made to enter the extrusion shell 12 through the second connecting tube 11. When the second sealing shell 10 and the first sealing shell 9 are about to contact, the second sealing shell 10 and the first sealing shell 9 move to the right synchronously. When the left side of the first sealing shell 9 moves to the right side of the first connecting tube 7, the movement stops. Then the second sealing shell 10 starts to move to the left to the initial position, completing a reciprocating movement. When the first sealing shell 9 and the second sealing shell 10 on the front side are connected with the first connecting tube 7, the first sealing shell 9 and the second sealing shell 10 on the rear side are connected with the second connecting tube 11, and the first sealing shells 9 and the second sealing shells 10 on the front and rear sides move alternately.

[0040] In the process of the molten rubber passing through the second connecting pipe 11 on the front side, the hole opened on the second piston 23 is not enough to allow the molten rubber to pass quickly, and the rubber squeezes the second piston 23 on the front side, and the rubber squeezes the second piston 23 backwards, and the second piston 23 moves backwards. In the process of the second piston 23 moving backwards, the second piston 23 drives the limit block 24 to move backwards, so that the inclined surface on the limit block 24 contacts the groove on the fixed block 21 and enters the groove of the fixed block 21, and then the limit block 24 continues to move to the plane on the left side and contacts the inner side of the groove of the fixed block 21, so as to limit the first piston 20. At this time, the second piston 23 is separated from the second connecting pipe 11, and then the molten rubber passes through the second connecting pipe 11. The two connecting pipes 11 enter the extrusion shell 12, the rubber pressure in the extrusion shell 12 increases, and the rubber entering the extrusion shell 12 is discharged from the left end. The left end of the extrusion shell 12 is connected to the rubber mold, and the molten rubber is pressed into the rubber mold (when in use, in order to ensure the molding quality, the amount of rubber entering the extrusion shell 12 each time is limited to be greater than the amount required to fill the mold). When the mold is full of rubber, the pressure in the mold and the extrusion shell 12 increases. When the pressure is too high, part of the molten rubber enters the second fixed shell 5 through the conduit 15 and the one-way pressure valve therein, to prevent excessive pressure from causing excessive internal stress of the rubber (excessive internal stress of the rubber will cause rubber deformation), affecting the molding effect.

[0041] When the rubber is stopped from being introduced into the extrusion shell 12, the second piston 23 gradually moves forward under the action of the tension spring 25. The rubber passes through the hole on the second piston 23. During the forward movement of the second piston 23, the stop block 24 is driven, so that the stop block 24 is separated from the fixed block 21. At this time, the first piston 20 is released and moves rightward under pressure. The first piston 20 squeezes the hydraulic oil on its right side. The hydraulic oil enters the hydraulic shell 30 through the third connecting pipe 33 and squeezes the third piston 34 upward. The third piston 34 squeezes the spring 35. During the movement of the first piston 20 to the right, the pressure of the rubber in the extrusion shell 12 is released. The first piston 20 keeps a constant pressure in the extrusion shell 12. The pressure is the elastic force of the spring 35 at this time, so as to ensure the quality of rubber molding and prevent the rubber from having different density after molding due to excessive or insufficient pressure. Then, wait for the rubber in the mold to cool and mold, and take out the cooled and molded rubber to complete one molding. Repeat the above process. The front and rear two first sealing shells 9 and the two second sealing shells 10 are operated alternately to feed the mold. After use, the device is closed.

[0042] When it is necessary to adjust the pressure in the rubber molding process, the staff twists the rotating column 32, and the rotating column 32 moves in the up and down directions under the limit of the thread on the first rotating ring 31. When the rotating column 32 moves downward, the rotating column 32 squeezes the spring 35, and the spring 35 compresses and increases the pressure on the third piston 34, thereby increasing the pressure of the hydraulic oil on the lower side of the third piston 34. The leftward force of the first piston 20 is increased through the transmission of the hydraulic oil, thereby increasing the pressure of the rubber molding process. When the rotating column 32 moves upward, the pressure of the rubber molding process is reduced.

[0043] Embodiment 2: Based on embodiment 1, Figure 3 , Figure 8 and Fig. 9 As shown, it also includes first fixing plates 40 that are equidistant and centrally symmetrically distributed. The first fixing plates 40 that are equidistant and centrally symmetrically distributed are all fixed to the auger 6. The auger 6 is fixed with second fixing plates 41 that are equidistant and centrally symmetrically distributed near the first fixing plates 40 that are equidistant and centrally symmetrically distributed. The two centrally symmetrically distributed second fixing plates 41 and the two adjacent centrally symmetrically distributed first fixing plates 40 are staggered. The first fixing plates 40 and the second fixing plates 41 are both arc-shaped, and the bending directions of the arcs are opposite. The second fixing plate 41 is in contact with the second fixing shell 5, and there is a gap between the first fixing plate 40 and the second fixing shell 5.

[0044] like Figure 8-Figure 10As shown, the second fixed shell 5 is fixedly connected to two third fixed shells 42 equidistantly distributed on the left and right, the third fixed shell 42 is rotatably connected to a second rotating ring 43, the second rotating ring 43 is fixedly connected to the auger 6, the second rotating ring 43 is rotatably connected to two symmetrically distributed rotating shafts 44, a transmission wheel 45 is fixedly connected to the right side of the rotating shaft 44, and a transmission ring that cooperates with the adjacent transmission wheel 45 is fixedly connected in the third fixed shell 42. When the auger 6 drives the second rotating ring 43 to rotate, the transmission wheel 45 fixedly connected to the second rotating ring 43 rotates on the transmission ring of the adjacent third fixed shell 42, so that the transmission wheel 45 rotates, thereby driving the rotating shaft 44 to rotate, and a first stirring rod 46 is fixedly connected to the left side of the rotating shaft 44. The first stirring rod 46 is used to stir rubber, and a circumferentially distributed second stirring rod 47 is fixedly connected in the second fixed shell 5. The circumferentially distributed second stirring rod 47 is located between the equidistantly distributed first fixed plates 40, and the second stirring rod 47 is used to stir the rubber in the second fixed shell 5.

[0045] During the rotation of the auger 6, the auger 6 drives the first fixed plate 40 and the second fixed plate 41 to rotate clockwise (from left to right). Taking the first fixed plate 40 and the second fixed plate 41 on the right side as an example, during the rotation of the second fixed plate 41, the second fixed plate 41 continuously scrapes the rubber on the edge of the second fixed shell 5 to move inward. While the auger 6 moves, the second rotating ring 43 moves synchronously, and drives the transmission wheel 45 to rotate in the third fixed shell 42 through the rotating shaft 44 thereon. The transmission wheel 45 rotates under the action of the rotating wheel in the third fixed shell 42. The transmission wheel 45 drives the two first stirring rods 46 to rotate through the rotating shaft 44. The first stirring rods 46 stir the rubber during the rotation process, mix the rubber, and make the rubber evenly heated. Since the second fixed plate 41 guides the rubber toward the auger 6, the rubber passes through the second fixed plate 41 and is squeezed by the adjacent first fixed plate 40. When the first fixed plate 40 rotates, the first fixed plate 40 pushes the rubber toward the inner wall of the second fixed shell 5. The above process is repeated to move the rubber in the inside and outside directions in the second fixed shell 5, mix the rubber, and make the rubber heated more evenly.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion device for producing solution-polymerized styrene-butadiene rubber, characterized in that: The invention comprises a mounting seat (1), the mounting seat (1) being fixedly connected to a material storage shell (2), a rotating motor (3) being fixedly connected to a side of the mounting seat (1) close to the material storage shell (2), the mounting seat (1) and the material storage shell (2) being fixedly connected to a first fixed shell (4), the first fixed shell (4) being located on a side of the material storage shell (2) away from the rotating motor (3), a second fixed shell (5) being fixedly connected inside the first fixed shell (4), the second fixed shell (5) being communicated with the material storage shell (2), a heating plate being arranged inside the second fixed shell (5), an auger (6) being fixedly connected to the output shaft of the rotating motor (3), the auger (6) being rotatably connected to the second fixed shell (5) and the material storage shell (2), a first fixed shell (4) being fixedly connected to a side of the first fixed shell (4) away from the material storage shell (2) and a first fixed shell (5) being symmetrically distributed. A fixed tube (8), a first connecting tube (7) being connected between the first fixed tube (8) and the second fixed shell (5), the first fixed tube (8) being sealingly and slidably connected to a first sealing shell (9) and a second sealing shell (10), the mounting seat (1) being fixedly connected to symmetrically distributed first electric telescopic rods (91) and symmetrically distributed second electric telescopic rods (101), the telescopic end of the first electric telescopic rod (91) being fixedly connected to the adjacent first sealing shell (9), the telescopic end of the second electric telescopic rod (101) being fixedly connected to the adjacent second sealing shell (10), the second fixed shell (5) being fixedly connected to an extrusion shell (12), a second connecting tube (11) being connected between the extrusion shell (12) and the first fixed tube (8), and the symmetrically distributed first fixed tubes (8) being commonly connected to a vacuum suction tube (13); The vacuum suction pipe (13) is connected to an external vacuum pump, the vacuum suction pipe (13) is fixedly connected to the second fixed shell (5), the vacuum suction pipe (13) is located between the adjacent first connecting pipe (7) and the adjacent second connecting pipe (11), the first sealing shell (9) is sealed and matched with the adjacent first connecting pipe (7) and the vacuum suction pipe (13), the second sealing shell (10) is sealed and matched with the adjacent second connecting pipe (11) and the vacuum suction pipe (13), and a heat-insulating shell (14) is provided on the side of the extrusion shell (12) away from the second fixed shell (5); The molten rubber in the second fixed shell (5) enters the first fixed tube (8) through the first connecting tube (7) and is located between the first sealing shell (9) and the second sealing shell (10). When the right end surface of the second sealing shell (10) is about to contact the vacuum suction tube (13), the first sealing shell (9) blocks the first connecting tube (7). At this time, the external vacuum pump is started to extract the gas in the vacuum suction tube (13). Then, the first sealing shell (9) and the second sealing shell (10) continue to move, so that the space between the first sealing shell (9) and the second sealing shell (10) is connected to the vacuum suction tube (13), so that the molten rubber in the first sealing shell (9) and the second sealing shell (10) is in a vacuum environment. After the gas in the rubber in the first fixed tube (8) is exhausted, the front The first sealing shell (9) and the second sealing shell (10) on the side continue to move leftwards. During the movement, the first sealing shell (9) gradually blocks the vacuum suction tube (13). After the first sealing shell (9) has completed blocking the vacuum suction tube (13), it continues to move. The right side of the second sealing shell (10) gradually moves to the left side of the second connecting tube (11), so that the space between the second sealing shell (10) and the first sealing shell (9) is connected to the second connecting tube (11). When the right side of the second sealing shell (10) moves to the left side of the second connecting tube (11), it stops moving. The first sealing shell (9) continues to move leftwards, squeezing the melted rubber between the second sealing shell (10) and the first sealing shell (9), so that the melted rubber enters the extrusion shell (12) through the second connecting tube (11).

2. The extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 1, characterized in that: The second fixed shell (5) is fixedly connected to a conduit (15), the conduit (15) connects the extrusion shell (12) and the second fixed shell (5), and a one-way pressure valve is arranged in the conduit (15).

3. The extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 2, characterized in that: The extrusion shell (12) is sealingly and slidably connected to a first piston (20), the first piston (20) is sealingly and slidably connected to the conduit (15), a limiting ring is arranged in the extrusion shell (12) and is limitedly matched with the first piston (20), a fixing block (21) is fixedly connected to the side of the first piston (20) away from the second fixed shell (5), a second fixing pipe (22) is fixedly connected between the symmetrically distributed second connecting pipes (11), the second fixing pipe (22) is sealingly and slidably connected to symmetrically distributed second pistons (23), the symmetrically distributed second pistons (23) are sealingly and slidably connected to adjacent second connecting pipes (11), the second pistons (23) are fixedly connected to a limiting block (24), and the limiting block (24) is limitedly matched with the fixing block (21).

4. The extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 3, characterized in that: The fixing block (21) is provided with a groove, the limiting block (24) is provided with an inclined surface, the fixing block (21) is limitedly matched with the limiting block (24) through the groove thereon, a tension spring (25) is connected between the second piston (23) and the second fixing tube (22), and the second piston (23) is provided with a hole.

5. The extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 4, characterized in that: A hydraulic housing (30) is fixedly connected to the inner side of the first fixed housing (4), a first rotating ring (31) is fixedly connected to the outer side of the first fixed housing (4), the hydraulic housing (30) is slidably and rotatably connected to a rotating column (32), the rotating column (32) and the first rotating ring (31) are threadedly matched, the hydraulic housing (30) is fixedly connected to and communicated with a third connecting pipe (33), one end of the third connecting pipe (33) away from the hydraulic housing (30) is communicated with the extrusion housing (12), the hydraulic housing (30) is sealingly and slidably connected to a third piston (34), and a spring (35) is connected between the third piston (34) and the rotating column (32).

6. The extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 1, characterized in that: It also includes first fixing plates (40) that are equidistant and centrally symmetrically distributed, the first fixing plates (40) that are equidistant and centrally symmetrically distributed are all fixedly connected to the auger (6), the auger (6) is fixedly connected to a position close to the first fixing plates (40) that are equidistant and centrally symmetrically distributed, and the first fixing plates (40) that are centrally symmetrically distributed and the adjacent second fixing plates (41) that are centrally symmetrically distributed are staggered.

7. An extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 6, characterized in that: The first fixing plate (40) and the second fixing plate (41) are both arc-shaped, and the bending directions of the arcs are opposite; the second fixing plate (41) is in contact with the second fixing shell (5), and a gap exists between the first fixing plate (40) and the second fixing shell (5).

8. The extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 6, characterized in that: A third fixed shell (42) distributed equidistantly is fixedly connected to a side of the second fixed shell (5) close to the first fixed plate (40); the third fixed shell (42) is rotatably connected to a second rotating ring (43); the second rotating ring (43) is fixedly connected to the auger (6); the second rotating ring (43) is rotatably connected to a symmetrically distributed rotating shaft (44); a transmission wheel (45) is fixedly connected to a side of the rotating shaft (44) close to the adjacent third fixed shell (42); a transmission ring for transmission cooperation with the adjacent transmission wheel (45) is fixedly connected inside the third fixed shell (42); and a first stirring rod (46) is fixedly connected to a side of the rotating shaft (44) away from the adjacent third fixed shell (42).

9. An extrusion device for producing solution-polymerized styrene-butadiene rubber according to claim 8, characterized in that: Circumferentially distributed second stirring rods (47) are fixedly connected in the second fixed shell (5), and the circumferentially distributed second stirring rods (47) are located between the equidistantly distributed first fixed plates (40).

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