SBR (styrene butadiene rubber) elastic sheet and production process thereof

Abstract

The invention discloses an SBR (Styrene Butadiene Rubber) elastic sheet and a production process thereof. The SBR elastic sheet comprises an SBR sheet main body and a synchronous driving screening device, the rubber base layer, the carbon black layer and the wear-resistant layer are overlapped to form a high-tensile-strength and high-wear-resistance rubber structure, the service life of the SBR rubber sheet is greatly prolonged, the structural strength of the SBR rubber sheet is greatly improved, efficient production of the SBR rubber sheet is carried out through the steps of raw material preparation, polymerization reaction and multi-layer composite sheet forming, the SBR rubber sheet is subjected to composite processing, and the service life of the SBR rubber sheet is prolonged. According to the method, the structural characteristics are improved, the crushing equipment is further arranged to quickly crush and process the raw materials, and the synchronous driving and screening device arranged in the crushing equipment can simultaneously perform driving and screening activities of a plurality of crushing equipment, so that the crushing treatment efficiency is greatly improved, and the subsequent SBR rubber sheet preparation efficiency is indirectly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of SBR rubber, and specifically relates to an SBR rubber elastic sheet and its production process. Background Art

[0002] Rubber is an elastic polymer. Rubber can be obtained from the sap of some plants or can be artificial. Both have quite a lot of applications and products, such as tires, gaskets, etc., and thus have become important cash crops.

[0003] Rubber is classified into natural rubber and synthetic rubber according to raw materials. Among them, SBR rubber is generally more used in synthetic rubber. SBR rubber, also known as styrene-butadiene copolymer, has physical and mechanical properties, processing properties and service properties of products close to natural rubber. Some properties such as wear resistance, heat resistance, aging resistance and vulcanization speed are more excellent than natural rubber. It can be used in combination with natural rubber and various synthetic rubbers. It is the largest general-purpose synthetic rubber variety and one of the earliest rubber varieties to achieve industrial production.

[0004] Currently used SBR rubber generally has an internal structure prepared by copolymerizing butadiene and styrene. As a result, the structural strength and wear resistance of the produced SBR rubber itself are relatively low. During use, it is relatively easy to break and wear, affecting long-term use.

[0005] Secondly, during the production process of SBR rubber, in order to accelerate the copolymerization reaction efficiency of butadiene and styrene, generally a crushing device is required to achieve the crushing treatment of raw materials. However, generally one crushing device is used for butadiene and styrene, and the crushing efficiency is relatively low. At the same time, the subsequent screening property of the crushed material is relatively low, and the production line needs to be extended, which has a certain impact on the production efficiency of SBR rubber. Summary of the Invention

[0006] The purpose of the present invention is to provide an SBR rubber elastic sheet and its production process to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: An SBR rubber elastic sheet includes a main body of the SBR rubber sheet. The main body of the SBR rubber sheet is composed of a rubber base layer, a carbon black layer and a wear-resistant layer. Carbon black layers are hot-pressed on both sides of the outer end of the rubber base layer, and a wear-resistant layer is hot-pressed outside the carbon black layer.

[0008] Preferably, each side of the wear-resistant layer wraps the rubber base layer and the carbon black layer, and the wear-resistant layer as a whole is made of foamed thermoplastic polyurethane material.

[0009] The present invention provides a production process of an SBR rubber elastic sheet, including the following steps:

[0010] S1. Raw material preparation: Styrene and butadiene are crushed and filtered through a crushing device and a filtering device to reduce the volume of the raw materials and remove internal impurities and impure substances. The treated styrene and butadiene are stored in different containers for subsequent use.

[0011] S2. Polymerization reaction: Styrene used is added to the reaction kettle, heated and stirred to activate, and a catalyst is added to cause the styrene to undergo a polymerization reaction. After a period of time, butadiene is gradually added to cause the styrene and butadiene to undergo a copolymerization reaction to form a rubber base layer.

[0012] S3. Multilayer composite into sheets: The rubber base layer, carbon black layer and wear-resistant layer are stacked in sequence and made into SBR rubber sheets by hot pressing.

[0013] Preferably, the crushing device used in step S1 includes a fixed plate, a controller, a support frame, a connecting plate, a first crushing roller, a second crushing roller, a first gear, a second gear, a discharge hopper and a synchronous drive screening device. The controller is installed on the right side of the front end of the fixed plate. The left and right sides of the fixed plate are both fixed to the support frame. The upper ends of the four sides of the support frame are all installed with connecting plates, and the four connecting plates enclose a rectangular frame shape. The first crushing roller and the second crushing roller are respectively rotatably installed on the front side and the rear side inside the rectangular frame. The first gear and the second gear are respectively installed on the sides of the first crushing roller and the second crushing roller close to the fixed plate. The first gear and the second gear are meshed and connected. The discharge hopper is bolted to the bottom of the upper end of the support frame. The synchronous drive screening device is relatively arranged at the lower end of the fixed plate, and both sides of the synchronous drive screening device are connected to the support frame.

[0014] Preferably, the synchronous drive screening device includes a synchronous drive assembly, a push-pull assembly, a supporting plate, a connecting frame, a screening assembly, legs and guide rails. The synchronous drive assembly is installed at the lower end of the fixed plate and is connected to the first gears on both sides. The lower end of the synchronous drive assembly is butted with the push-pull assembly, and the supporting plate is installed at the bottom of the push-pull assembly. Both sides of the supporting plate are connected to the support frame. The side of the push-pull assembly is connected to the connecting frame, and the connecting frame is relatively arranged at the lower end of the discharge hopper. Both sides of the bottom of the connecting frame are installed with legs, and the lower ends of the legs are slidably butted with the guide rails. The bottom of the guide rails is fixed to the support frame.

[0015] Preferably, the synchronous drive assembly includes a fixing frame, a servo motor, a first bevel gear, a second bevel gear, a rotating shaft, a third bevel gear, a fourth bevel gear and a docking rod. The fixing frame is fixed to the lower end of the fixing plate. A servo motor is installed at the rear side of the fixing frame, and the output end of the servo motor at the front side is connected to the first bevel gear. The lower end of the first bevel gear is meshed with the second bevel gear. A rotating shaft is vertically docked in the middle of the second bevel gear. One side of the rotating shaft is connected to the third bevel gear, and the other side of the third bevel gear is connected to the pushing and pulling assembly. The upper end of the third bevel gear is meshed with the fourth bevel gear. A docking rod is docked in the middle of the fourth bevel gear, and both sides of the docking rod are connected to the first gear.

[0016] Preferably, the pushing and pulling assembly includes a rotating arm, a convex shaft, a moving plate, a first connecting groove, a second connecting groove and a pushing and pulling plate. The rotating arm is docked at the bottom of the rotating shaft. A convex shaft is inserted into one side of the rotating arm. The lower end of the convex shaft is connected to the inside of the moving plate. A first connecting groove is formed in the middle of the moving plate, and the lower end of the convex shaft is connected to the inside of the first connecting groove. Second connecting grooves are formed in the inner parts on both sides of the moving plate, and the second connecting grooves are connected to the lower end of one side of the pushing and pulling plate. The other side of the pushing and pulling plate is fixed to the connecting frame.

[0017] Preferably, the screening assembly includes a support plate, a cylinder, a connecting rod, a vertical plate, a connecting rod, a connecting shaft, a rectangular plate and a sieve plate. The support plate is fixed to one side of the pushing and pulling plate. A cylinder is installed at the upper end of the support plate. The output end of the cylinder is connected to one side of the connecting rod, and the other side of the connecting rod is fixed to the vertical plate. The lower end of the vertical plate is fixed to the connecting rod, and a connecting shaft is inserted into the inner part of the other side of the connecting rod. Both ends of the connecting shaft are connected to the inside of the rectangular plate, and the lower end of the rectangular plate is connected to the sieve plate. The sieve plate is rotatably installed at the lower end inside the connecting frame.

[0018] Preferably, a rectangular hollow part is integrally formed in the middle of one side of the connecting frame close to the pushing and pulling assembly, and the rectangular hollow part formed in the connecting frame is used to accommodate the rectangular plate.

[0019] Preferably, the first connecting groove is located between the two second connecting grooves, and the direction in which the first connecting groove is formed is different from that of the second connecting groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The present invention forms a high tensile strength and high wear-resistant rubber structure by arranging a rubber base layer, a carbon black layer and a wear-resistant layer to overlap each other, thereby greatly enhancing the service life and structural strength of the SBR rubber sheet. The SBR rubber sheet is efficiently produced through raw material preparation, polymerization reaction and multi-layer composite sheeting steps, and the SBR rubber sheet is composite-processed to improve its structural characteristics. A crushing device is also arranged in the method to quickly crush the raw materials, and a synchronous drive screening device arranged inside the crushing device can drive and screen multiple crushing devices at the same time, thereby greatly improving the crushing processing efficiency and indirectly improving the subsequent SBR rubber sheet preparation efficiency.

[0022] The setting of the synchronous drive component, that is, when the servo motor is driven, the meshing transmission of the first bevel gear and the second bevel gear can be realized, so that the rotating shaft can rotate accordingly to realize the meshing transmission of the third bevel gear and the fourth chasing bevel gear meshed at the upper end. At the same time, the transmission of the push-pull component connected to the bottom can also be realized. When the third bevel gear and the fourth chasing bevel gear are meshed for transmission, the docking rod can simultaneously rotate the first gears docked on both sides. When the first gears on both sides rotate at the same time, the second gears meshed with one end of the first gears on both sides will rotate synchronously and oppositely. In this way, the two sets of first crushing rollers and the second crushing rollers can perform material crushing activities at the same time, which significantly improves the crushing processing efficiency of various materials.

[0023] The arrangement of the push-pull assembly, the connecting frame, the supporting legs and the guide rails, that is, when the rotating shaft rotates, the rotation of the rotating arm connected to the bottom can be realized. When the rotating arm rotates, the convex shaft inserted into one side of the rotating arm will be driven and matched with the first connecting groove opened in the middle of the moving plate to realize the forward and backward reciprocating movement of the moving plate. When the moving plate reciprocates forward and backward, the second connecting grooves opened on the left and right sides of the moving plate will realize the lateral reciprocating movement of the push-pull plate. In this way, the reciprocating movement of the connecting frame is indirectly realized, so that the crushed materials falling into the connecting frame can be quickly and synchronously screened through reciprocating activities without performing too many steps, thereby accelerating the overall production efficiency. At the same time, when the connecting frame reciprocates, the sliding guide and support can be matched through the combined activities of the supporting legs and the guide rails on both sides of the bottom, so that the reciprocating screening state of the connecting frame is smooth and stable.

[0024] The setting of the screening component, that is, the screen plate installed at the bottom of the connecting frame, can realize the screening processing of the crushed material, reduce larger particles, discharge standard particles, and carry out rapid polymerization reaction. When it is necessary to realize the recycling and reprocessing of larger particles, the connecting rod, the vertical plate and the connecting rod are moved horizontally in sequence by driving the cylinder. In this way, the rectangular plate connected to the connecting shaft set on one side of the connecting rod will be pushed and extend into the rectangular hollow part on one side of the connecting frame. Thereby, the screen plate docked at the lower end of the rectangular plate and rotatably connected to the lower end of the connecting frame will be opened accordingly, and the closed state will be released, so that the screened larger particles can be automatically discharged for recycling and reprocessing. Brief Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a schematic diagram of the internal structure of the front view of the main body of the SBR rubber sheet of the present invention;

[0027] Figure 3 is a schematic diagram of the production process flow of the SBR rubber elastic sheet of the present invention;

[0028] Figure 4 is a schematic structural diagram of the crushing equipment of the present invention;

[0029] Figure 5 is a schematic structural diagram of the synchronous drive screening device of the present invention;

[0030] Figure 6 is a schematic structural diagram of the synchronous drive component of the present invention;

[0031] Figure 7 is a schematic structural diagram of the push-pull component of the present invention;

[0032] Figure 8 of the present invention Figure 7 is a schematic diagram of the partial enlarged structure;

[0033] Figure 9 is a schematic structural diagram of the screening component of the present invention;

[0034] Figure 10 of the present invention Figure 5 is a schematic diagram of the enlarged structure at position A.

[0035] In the figure: SBR rubber sheet main body - 1, rubber base layer - 11, carbon black layer - 12, wear-resistant layer - 13, fixing plate - 21, controller - 22, support frame - 23, connecting plate - 24, first crushing roller - 25, second crushing roller - 26, first gear - 27, second gear - 28, discharge hopper - 29, synchronous drive screening device - 210, synchronous drive assembly - 2101, fixing frame - 21011, servo motor - 21012, first bevel gear - 21013, second bevel gear - 21014, rotating shaft - 21015, third bevel gear - 21016, fourth bevel gear - 21017, docking rod - 21018, push-pull assembly - 2102, rotating arm - 21021, convex shaft - 21022, moving plate - 21023, first connecting groove - 21024, second connecting groove - 21025, push-pull plate - 21026, supporting plate - 2103, connecting frame - 2104, screening assembly - 2105, supporting plate - 21051, air cylinder - 21052, connecting rod - 21053, vertical plate - 21054, connecting rod - 21055, connecting shaft - 21056, rectangular plate - 21057, sieve plate - 21058, support leg - 2106, guide rail - 2107. Detailed implementation mode

[0036] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0037] Please refer to Figure 1-2 , the present invention provides an SBR rubber elastic sheet, including an SBR rubber sheet main body 1, which is composed of a rubber base layer 11, a carbon black layer 12 and a wear-resistant layer 13. Carbon black layers 12 are hot-pressed on both sides of the outer end of the rubber base layer 11, and a wear-resistant layer 13 is hot-pressed outside the carbon black layer 12.

[0038] Among them, each side of the wear-resistant layer 13 wraps the rubber base layer 11 and the carbon black layer 12, and the wear-resistant layer 13 is made of foamed thermoplastic polyurethane material as a whole.

[0039] Among them, the carbon black inside the carbon black layer 12 is a black powder composed of carbon elements, which has excellent electrical conductivity and reinforcement properties. Adding carbon black to styrene-butadiene rubber can significantly improve the physical properties of rubber such as tensile strength, tear strength and wear resistance, because carbon black particles can be evenly dispersed in the rubber matrix to form a strong physical cross-linking network, thereby enhancing the overall performance of the rubber.

[0040] Among them, the foamed thermoplastic polyurethane inside the wear-resistant layer 13 has excellent wear resistance, high elasticity and high resilience. These properties enable it to significantly improve the wear resistance of SBR rubber. The wear resistance of the foamed thermoplastic polyurethane mainly comes from its polymer chain structure and special surface treatment. Its polymer chain structure endows it with excellent elasticity and resilience, enabling it to quickly return to its original state when subjected to external forces and reducing wear.

[0041] Please refer to Figure 3 , a production process of an SBR rubber elastic sheet, comprising the following steps:

[0042] S1. Raw material preparation: Styrene and butadiene are crushed and filtered through a crushing device and a filtering device to reduce the volume of the raw materials and remove internal impurities and impure substances. The treated styrene and butadiene are stored in different containers for subsequent use;

[0043] S2. Polymerization reaction: The used styrene is added to a reaction kettle, heated, raised in temperature and stirred to activate, and a catalyst is added to promote the polymerization reaction of styrene. After a period of time, butadiene is gradually added to cause a copolymerization reaction between styrene and butadiene to form a rubber base layer 11;

[0044] S3. Multilayer lamination into sheets: The rubber base layer 11, the carbon black layer 12 and the wear-resistant layer 13 are laminated in sequence and made into an SBR rubber sheet by a hot pressing method.

[0045] Please refer to Figure 4 , the crushing device used in step S1 includes a fixing plate 21, a controller 22, a support frame 23, a connecting plate 24, a first crushing roller 25, a second crushing roller 26, a first gear 27, a second gear 28, a discharge hopper 29 and a synchronous drive screening device 210. The controller 22 is installed at the upper right end of the front of the fixing plate 21. The left and right sides of the fixing plate 21 are both fixed to the support frame 23. Connecting plates 24 are installed on the upper four sides of the support frame 23, and the four connecting plates 24 enclose a rectangular frame. The first crushing roller 25 and the second crushing roller 26 are respectively rotatably installed on the front and rear sides inside the rectangular frame, and the crushing teeth on the outer sides of the first crushing roller 25 and the second crushing roller 26 are alternately arranged in sequence. A first gear 27 and a second gear 28 are respectively installed on one side of the first crushing roller 25 and the second crushing roller 26 close to the fixing plate 21, and the first gear 27 and the second gear 28 are meshed and connected. Thus, through the meshing transmission of the first gear 27 and the second gear 28, the first crushing roller 25 and the second crushing roller 26 can rotate synchronously and in opposite directions to meet the efficient crushing treatment of the materials. The discharge hopper 29 is bolted to the bottom of the upper end of the support frame 23. A synchronous drive screening device 210 is provided opposite to the lower end of the fixing plate 21, and both sides of the synchronous drive screening device 210 are connected to the support frame 23.

[0046] Among them, the support frame 23, the connecting plate 24, the first crushing roller 25, the second crushing roller 26, the first gear 27, the second gear 28 and the discharge hopper 29 are all symmetrically arranged left and right along the fixed plate 21. In this way, the docking combination of the left crushing device and the right crushing device can be realized, meeting the efficient simultaneous crushing and processing of various subsequent materials and accelerating the subsequent rubber production and preparation efficiency.

[0047] Please refer to Figure 5 , the synchronous drive screening device 210 includes a synchronous drive assembly 2101, a push-pull assembly 2102, a support plate 2103, a connecting frame 2104, a screening assembly 2105, legs 2106 and guide rails 2107. The synchronous drive assembly 2101 is installed at the lower end of the fixed plate 21, and the synchronous drive assembly 2101 is connected to the first gears 27 on both sides. In this way, the simultaneous drive operation of the left crushing device and the right crushing device can be realized. The lower end of the synchronous drive assembly 2101 is docked with the push-pull assembly 2102, and the support plate 2103 is installed at the bottom of the push-pull assembly 2102. Both the left and right sides of the support plate 2103 are fixedly connected to the support frame 23. Either the left or the right side of the push-pull assembly 2102 is docked with the connecting frame 2104, and the connecting frame 2104 is relatively arranged at the lower end of the discharge hopper 29. Legs 2106 are installed at the lower ends of the front and rear sides of the connecting frame 2104, and the lower ends of the two legs 2106 are slidably docked with the two guide rails 2107. The two guide rails 2107 are respectively fixedly connected to the front and rear sides of the inner lower end of the support frame 23.

[0048] Please refer to Figure 6 , the synchronous drive assembly 2101 includes a fixed frame 21011, a servo motor 21012, a first bevel gear 21013, a second bevel gear 21014, a rotating shaft 21015, a third bevel gear 21016, a fourth bevel gear 21017 and a docking rod 21018. The fixed frame 21011 is fixedly connected to the lower end of the fixed plate 21, and the fixed frame 21011 is integrally arranged in an inverted L-shaped frame. The servo motor 21012 is installed at the rear side of the fixed frame 21011, and the front output end of the servo motor 21012 is connected to the first bevel gear 21013. The first bevel gear 21013 is meshed with the second bevel gear 21014 at the lower end. The second bevel gear 21014 is vertically docked with the rotating shaft 21015 in the middle. The top of the rotating shaft 21015 is connected to the third bevel gear 21016, and the bottom of the third bevel gear 21016 is connected to the push-pull assembly 2102. In this way, the linkage combination of the crushing drive and the reciprocating push-pull screening activity can be conveniently realized. The third bevel gear 21016 is meshed with the fourth bevel gear 21017 at the upper end. The fourth bevel gear 21017 is horizontally docked with the docking rod 21018 in the middle. The left and right sides of the docking rod 21018 are respectively connected to the first gears 27 on both sides. In this way, the series connection of the left crushing device and the right crushing device can be realized to meet the synchronous crushing drive of the left crushing device and the right crushing device and accelerate the crushing efficiency.

[0049] Please refer to Figure 7-8 Figure 7-8 , the push-pull assembly 2102 includes a swing arm 21021, a convex shaft 21022, a moving plate 21023, a first receiving groove 21024, a second receiving groove 21025 and a push-pull plate 21026. The swing arm 21021 is butted against the bottom of the rotating shaft 21015, and the swing arm 21021 can rotate in the same direction as the rotating shaft 21015. The convex shaft 21022 is vertically inserted into the right side of the swing arm 21021, and the lower end of the convex shaft 21022 is connected to the inside of the moving plate 21023. A first receiving groove 21024 is horizontally opened in the middle of the moving plate 21023, and the inside of the first receiving groove 21024 is connected to the lower end of the convex shaft 21022. In this way, with the rotation of the swing arm 21021, the convex shaft 21022 inserted into the first receiving groove 21024 can conveniently realize the forward and backward reciprocating movement of the moving plate 21023. Second receiving grooves 21025 are opened in the left and right sides of the moving plate 21023, and the second receiving grooves 21025 are connected to the lower end of one side of the push-pull plate 21026, and the two second receiving grooves 21025 are arranged as reverse inclined grooves. The side of the push-pull plate 21026 away from the second receiving groove 21025 is fixedly connected to the side of the connecting frame 2104.

[0050] Among them, the first receiving groove 21024 is located between the two second receiving grooves 21025, and the opening direction of the first receiving groove 21024 is different from that of the second receiving groove 21025, that is, the first receiving groove 21024 realizes the forward and backward reciprocating movement transmission of the moving plate 21023, while the two second receiving grooves 21025 in opposite states realize the transverse reciprocating movement transmission of the push-pull plate 21026 to provide power support for subsequent reciprocating screening.

[0051] Please refer to Figure 9-10, the screening assembly 2105 includes a support plate 21051, a cylinder 21052, a connecting rod 21053, a vertical plate 21054, a connecting link 21055, a connecting shaft 21056, a rectangular plate 21057 and a sieve plate 21058. The support plate 21051 is fixedly arranged on one side of the push-pull plate 21026 and is relatively arranged at the upper end of the second receiving groove 21025. A cylinder 21052 is horizontally installed at the upper end of the support plate 21051. The output end of the cylinder 21052 is connected to one side of the connecting rod 21053, and the side of the connecting rod 21053 away from the cylinder 21052 is fixed to the upper end of the vertical plate 21054. And the lower end of the vertical plate 21054 is slidably inserted into the upper end inside of the support plate 2103. The lower end of the vertical plate 21054 is fixed to the connecting link 21055, and a connecting shaft 21056 is inserted into the side of the connecting link 21055 away from the vertical plate 21054. And the connecting shaft 21056 is inserted into and connected to the inside of the rectangular plate 21057. And the middle of the rectangular plate 21057 is provided with a rectangular hollow shape. And vertical grooves are integrally formed on the left and right sides of the rectangular plate 21057. And the rectangular plate 21057 can be connected to the outer ends of both sides of the connecting shaft 21056 through the vertical grooves on both sides. The lower end of the rectangular plate 21057 is connected to the sieve plate 21058, and the sieve plate 21058 is rotatably installed at the lower end inside the connecting frame 2104. Thus, the sieve plate 21058 can perform an opening and closing action to meet the opening and dumping treatment of filtering larger particles.

[0052] Among them, a rectangular hollow part is integrally formed in the middle of the connecting frame 2104 close to the push-pull assembly 2102, and the rectangular hollow part opened by the connecting frame 2104 is used to accommodate the rectangular plate 21057. Thus, when the rectangular plate 21057 is pushed and swings, it can swing along the inside of the rectangular hollow part in the middle of one side of the connecting frame 2104 to ensure the stable realization and progress of the opening and closing process of the sieve plate 21058.

[0053] Working principle:

[0054] First, through the controller 22, the driving of the servo motor 21012 provided at the rear side of the fixing frame 21011 is realized. Thus, the first bevel gear 21013 connected to the front side of the servo motor 21012 will rotate accordingly, and the transmission of the second bevel gear 21014 meshed with it at the bottom will be realized, that is, the rotation of the second bevel gear 21014 will be carried out. When the second bevel gear 21014 rotates, the rotating shaft 21015 vertically inserted into the inside of the second bevel gear 21014 will rotate synchronously therewith, and the upper end-connected third bevel gear 21016 will be driven to rotate synchronously. In this way, the fourth bevel gear 21017 meshed with the upper end of the third bevel gear 21016 can drive the rotation of the docking rod 21018 installed in the middle, so that the first gears 27 connected to the left and right sides of the docking rod 21018 rotate simultaneously. Thus, the second gear 28 meshed with one side of the first gear 27 can rotate accordingly. Therefore, the first crushing roller 25 and the second crushing roller 26 installed at the front and rear sides inside the rectangular frame surrounded by the four-side connecting plates 24 will realize synchronous reverse rotation activities. When the styrene and butadiene raw materials to be used in production are respectively put into the left crushing device and the right crushing device, the styrene and butadiene raw materials can be crushed into granular form through the crushing processes of the first crushing roller 25 and the second crushing roller 26 respectively, and quickly discharged from the discharge hopper 29, so that when the subsequent polymerization reaction of styrene and butadiene is carried out, it is not easy to cause a long polymerization time due to the problem of too large volume, which affects the production preparation efficiency of the subsequent overall SBR rubber sheet main body;

[0055] Secondly, the rotating shaft 21015 is driven by the first bevel gear 21013 and the second bevel gear 21014, and during the rotation process, not only the meshing transmission of the third bevel gear 21016 and the fourth bevel gear 21017 at the upper end can be realized, but also the circumferential rotation of the rotating arm 21021 connected at the bottom can be realized. As the rotating arm 21021 rotates, the convex shaft 21022 inserted into one side of the rotating arm 21021 will transmit to the first connecting groove 21024 opened in the middle of the moving plate 21023, that is, the convex shaft 21022 in the circular moving trajectory can realize the reciprocating movement of the moving plate 21023 through the guidance inside the first connecting groove 21024, and as the moving plate 21023 reciprocates back and forth, the first connecting grooves 21024 opened on both sides of the moving plate 21023 will respectively realize the reciprocating push-pull drive of the push-pull plate 21026 connected at the upper end through their own tilt directions, such as Here, the connecting frame 2104, which is docked at one side of the push-pull plate 21026 and is at the lower end of the discharge hopper 29, will move back and forth quickly left and right accordingly, and in order to ensure the stability of the reciprocating movement of the connecting frame 2104, a sliding guide structure of legs 2106 and guide rails 2107 is also set on both sides of the bottom through the connecting frame 2104, so that the connecting frame 2104 is in a stable reciprocating state, and when the connecting frame 2104 moves back and forth, the screen plate 21058 installed at the lower end of the connecting frame 2104 will move back and forth synchronously, so that when the crushed styrene and butadiene raw materials fall from the discharge hopper 29 to the inside of the connecting frame 2104, the reciprocating screening structure of the connecting frame 2104 and the screen plate 21058 can be used to achieve screening and discharging of larger particles inside the crushed material, and particles that meet the crushing requirements will fall out from the bottom of the screen plate 21058 to the external collection area, while particles that do not meet the requirements will remain in the connecting frame 2104.

[0056] Third, if it is desired to clean the larger particles screened inside the connection frame 2104, the cylinder 21052 provided on the upper end of the support plate 21051 can be driven to enable the cylinder 21052 to push the connecting rod 21053 connected to the output end. In this way, the vertical plate 21054 connected to one side of the connecting rod 21053 will push the connecting rod 21055 connected to the bottom. As the connecting rod 21055 pushes, the connecting shaft 21056 inserted into one side of the connecting rod 21055 will transmit to the vertical grooves on both sides of the rectangular plate 21057 to push the rectangular plate 21057. The shaped plate 21057 is further pushed into the rectangular hollow part on one side of the connecting frame 2104. Even if the rectangular plate 21057 is in a vertical state, it will be pushed and adjusted to an inclined state. In this way, the sieve plate 21058, which is docked at the lower end of the rectangular plate 21057 and rotatably connected to the lower end of the connecting frame 2104, will open accordingly to release the closed state of the sieve plate 21058. As a result, the larger particles sieved out can be recycled and crushed again along the opened sieve plate 21058, thereby realizing the convenient recycling and reprocessing of materials without too many cumbersome steps.

[0057] Fourth, when the rotating shaft 21015 rotates, the crushing equipment on both sides can be driven simultaneously and the push-pull component 2102 can be pushed and pulled reciprocatingly at the same time. In this way, the subsequent material crushing processing and reciprocating screening activities can be carried out at the same time, which greatly improves the production process without extending the production line.

[0058] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A SBR rubber elastic sheet, characterized in that: It includes an SBR rubber sheet body (1), and the SBR rubber sheet body (1) is composed of a rubber base layer (11), a carbon black layer (12) and a wear-resistant layer (13). Carbon black layers (12) are hot-pressed on both sides of the outer end of the rubber base layer (11), and a wear-resistant layer (13) is hot-pressed outside the carbon black layer (12).

2. The SBR rubber elastic sheet according to claim 1, wherein: The wear-resistant layer (13) wraps the rubber base layer (11) and the carbon black layer (12) on each side, and the wear-resistant layer (13) is integrally made of foamed thermoplastic polyurethane material.

3. The production process of an SBR rubber elastic sheet according to claim 1, characterized in that, It includes the following steps: S1. Raw material preparation: Styrene and butadiene are crushed and filtered through a crushing device and a filtering device to reduce the volume of the raw materials and remove internal impurities and impure substances. The treated styrene and butadiene are stored in different containers for subsequent use; S2. Polymerization reaction: Styrene used is added to a reaction kettle, heated and stirred to activate, and a catalyst is added to cause the styrene to undergo a polymerization reaction. After a period of time, butadiene is gradually added to cause the styrene and butadiene to undergo a copolymerization reaction to form the rubber base layer (11); S3. Multilayer lamination into sheets: The rubber base layer (11), the carbon black layer (12) and the wear-resistant layer (13) are stacked in sequence and made into an SBR rubber sheet by a hot-pressing method.

4. The production process of an SBR rubber elastic sheet according to claim 3, characterized in that: The crushing device used in the step S1 includes a fixing plate (21), a controller (22), a support frame (23), a connecting plate (24), a first crushing roller (25), a second crushing roller (26), a first gear (27), a second gear (28), a discharge hopper (29) and a synchronous drive screening device (210). The controller (22) is installed on the right side of the front end of the fixing plate (21). The left and right sides of the fixing plate (21) are both fixed to the support frame (23). Connecting plates (24) are installed on the four sides of the upper end of the support frame (23), and the four connecting plates (24) enclose a rectangular frame shape. The first crushing roller (25) and the second crushing roller (26) are respectively rotatably installed on the front side and the rear side inside the rectangular frame. A first gear (27) and a second gear (28) are respectively installed on one side of the first crushing roller (25) and the second crushing roller (26) close to the fixing plate (21). The first gear (27) and the second gear (28) are meshed and connected. The discharge hopper (29) is bolted to the bottom of the upper end of the support frame (23). The synchronous drive screening device (210) is oppositely arranged at the lower end of the fixing plate (21), and both sides of the synchronous drive screening device (210) are connected to the support frame (23).

5. The production process of an SBR rubber elastic sheet according to claim 4, characterized in that: The synchronous drive screening device (210) includes a synchronous drive assembly (2101), a push-pull assembly (2102), a support plate (2103), a connecting frame (2104), a screening assembly (2105), legs (2106) and guide rails (2107). The synchronous drive assembly (2101) is installed at the lower end of the fixed plate (21), and the synchronous drive assembly (2101) is connected to the two side first gears (27). The lower end of the synchronous drive assembly (2101) is butted with the push-pull assembly (2102), and a support plate (2103) is installed at the bottom of the push-pull assembly (2102). Both sides of the support plate (2103) are connected to the support frame (23). The side of the push-pull assembly (2102) is connected to the connecting frame (2104), and the connecting frame (2104) is oppositely arranged at the lower end of the discharge hopper (29). Both sides of the bottom of the connecting frame (2104) are installed with legs (2106), and the lower ends of the legs (2106) are slidably butted with the guide rails (2107). The bottom of the guide rails (2107) is fixed to the support frame (23).

6. The production process of an SBR rubber elastic sheet according to claim 5, characterized in that: The synchronous drive assembly (2101) includes a fixed frame (21011), a servo motor (21012), a first bevel gear (21013), a second bevel gear (21014), a rotating shaft (21015), a third bevel gear (21016), a fourth bevel gear (21017) and a docking rod (21018). The fixed frame (21011) is fixed at the lower end of the fixed plate (21). A servo motor (21012) is installed at the rear side of the fixed frame (21011), and the front output end of the servo motor (21012) is connected to the first bevel gear (21013). The lower end of the first bevel gear (21013) is meshed and connected with the second bevel gear (21014). A rotating shaft (21015) is vertically butted in the middle of the second bevel gear (21014). One side of the rotating shaft (21015) is connected to the third bevel gear (21016), and the other side of the third bevel gear (21016) is connected to the push-pull assembly (2102). The upper end of the third bevel gear (21016) is meshed with the fourth bevel gear (21017). A docking rod (21018) is butted in the middle of the fourth bevel gear (21017), and both sides of the docking rod (21018) are connected to the first gear (27).

7. The production process of an SBR rubber elastic sheet according to claim 6, characterized in that: The push-pull assembly (2102) includes a swing arm (21021), a convex shaft (21022), a moving plate (21023), a first receiving groove (21024), a second receiving groove (21025), and a push-pull plate (21026). The swing arm (21021) is butted against the bottom of the rotating shaft (21015). A convex shaft (21022) is inserted into one side of the swing arm (21021). The lower end of the convex shaft (21022) is connected to the inside of the moving plate (21023). A first receiving groove (21024) is formed in the middle of the moving plate (21023), and the inside of the first receiving groove (21024) is connected to the lower end of the convex shaft (21022). Second receiving grooves (21025) are formed in the inner parts on both sides of the moving plate (21023), and the second receiving grooves (21025) are connected to the lower end of one side of the push-pull plate (21026). The other side of the push-pull plate (21026) is fixed to the connecting frame (2104).

8. The production process of an SBR rubber elastic sheet according to claim 7, characterized in that: The screening assembly (2105) includes a support plate (21051), a cylinder (21052), a connecting rod (21053), a vertical plate (21054), a connecting link (21055), a connecting shaft (21056), a rectangular plate (21057), and a sieve plate (21058). The support plate (21051) is fixed to one side of the push-pull plate (21026). A cylinder (21052) is installed at the upper end of the support plate (21051). The output end of the cylinder (21052) is connected to one side of the connecting rod (21053), and the other side of the connecting rod (21053) is fixed to the vertical plate (21054). The lower end of the vertical plate (21054) is fixed to the connecting link (21055), and a connecting shaft (21056) is inserted into the inner part of the other side of the connecting link (21055). Both ends of the connecting shaft (21056) are connected to the inside of the rectangular plate (21057), and the lower end of the rectangular plate (21057) is connected to the sieve plate (21058). The sieve plate (21058) is rotatably installed at the lower end inside the connecting frame (2104).

9. The production process of an SBR rubber elastic sheet according to claim 8, characterized in that: A rectangular hollow part is integrally formed in the middle of one side of the connecting frame (2104) close to the push-pull assembly (2102), and the rectangular hollow part formed in the connecting frame (2104) is used to accommodate the rectangular plate (21057).

10. The production process of an SBR rubber elastic sheet according to claim 7, characterized in that: The first receiving groove (21024) is located between the two second receiving grooves (21025), and the opening direction of the first receiving groove (21024) is different from that of the second receiving grooves (21025).

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