High-wear-resistance carbon black reinforced rubber roller preparation device

Abstract

The invention belongs to the technical field of rubber roller preparation, and particularly relates to a high-wear-resistance carbon black reinforced rubber roller preparation device which comprises an open mill and an internal mixer, and the open mill comprises a base, a driving part, two supporting plates, two roller shafts and a material cavity; the material cavity is fixedly installed between the two supporting plates, the two supporting plates are fixedly installed on the left side and the right side of the upper portion of the base respectively, the two roller shafts are installed between the two supporting plates through bearings, oppositely arranged and located in the material cavity, the output end of the driving component is connected with the two roller shafts, a feeding port is formed in the upper portion of the material cavity, and the feeding port is connected with the driving component. A discharge hole is formed below the feeding hopper; a main body of the high-abrasion-resistance carbon black reinforced rubber roller is made of nitrile rubber and chloroprene rubber, and the device solves the problem that when a current high-abrasion-resistance carbon black reinforced rubber roller is used for plastifying, the extrusion force and shearing force on rubber cannot be automatically adjusted, meanwhile, the mixing quality of the rubber can be improved, and the production efficiency is improved. Therefore, the preparation quality of the rubber roller is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of rubber roller preparation, specifically relating to a device for preparing high abrasion-resistant carbon black reinforced rubber rollers. Background Technology

[0002] Rubber rollers are key components in industries such as printing, papermaking, and metallurgy, and their performance directly affects equipment operating efficiency and product quality. Under high-load friction conditions, ordinary rubber rollers suffer from poor wear resistance, easy aging, and short service life, requiring frequent replacement and increasing production costs for enterprises.

[0003] Carbon black is a commonly used reinforcing filler in rubber products. High-abrasion-resistant carbon blacks N220 and N330, due to their small particle size and high structure, can significantly improve the abrasion resistance and tear resistance of rubber. However, in existing plasticizing processes, the open mixing of nitrile rubber and neoprene rubber often results in insufficient mixing or inadequate extrusion and shear forces, leading to insufficient cross-linking of the rubber and further reducing the wear life of the rubber rollers. Therefore, optimizing the plasticizing of nitrile rubber and neoprene rubber is key to improving the abrasion resistance of rubber rollers. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus for preparing high abrasion-resistant carbon black reinforced rubber rollers, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high abrasion-resistant carbon black reinforced rubber roller preparation device, comprising a two-roll mill and a three-roll mixer, wherein the two-roll mill includes a base, a drive component, two support plates, two roller shafts, and a material cavity; the material cavity is fixedly installed between the two support plates, the two support plates are respectively fixedly installed on the upper left and right sides of the base, and the two roller shafts are both bearing-mounted between the two support plates and arranged opposite to each other, located within the material cavity; the output end of the drive component is connected to the two roller shafts; an inlet is provided above the material cavity, and an outlet is provided below the material cavity; the main body of the high abrasion-resistant carbon black reinforced rubber roller is made of nitrile rubber and chlorinated rubber. The roller is made of nitrile rubber, which is produced by recycling plastic waste. One of the rollers includes a shaft, a connecting rod, a conical block, and two extrusion blocks, and is hollow inside. A fixing block is integrally formed on the left side of the support plate. The shaft is rotatably connected to the inside of the roller and its left end is fixedly connected to the fixing block. The connecting rod is connected to the shaft, and the conical block is set on the outside of the connecting rod. Two sliding grooves are provided on the outside of the roller, and the two extrusion blocks are slidably connected in the two sliding grooves. An arc-shaped block is integrally formed on the inner side of the two extrusion blocks. After the roller rotates, the arc-shaped block and the conical block come into contact with each other.

[0006] The present invention further illustrates that the plasticizing step of the open mill includes: Step S1, recycling plastic waste and producing nitrile rubber and chloroprene rubber, preparing raw materials including nitrile rubber, chloroprene rubber, high abrasion-resistant carbon black, zinc oxide, stearic acid, antioxidant, paraffin wax, dioctyl phthalate, sulfur, and accelerator; Step S2, adding nitrile rubber and chloroprene rubber to the open mill for plasticizing until the rubber surface is smooth and free of obvious particles, obtaining plasticized rubber, and then performing segmented mixing, placing the plasticized rubber in an internal mixer, adding high abrasion-resistant carbon black, zinc oxide, stearic acid, antioxidant, paraffin wax, dioctyl phthalate, sulfur, and accelerator, and mixing to obtain compound rubber; Step S3, finally performing rubber roller forming, vulcanization treatment, and post-treatment processing in sequence to complete the production of high abrasion-resistant carbon black reinforced rubber roller.

[0007] The present invention further illustrates that the connecting rod is threadedly connected to the shaft; the right end of the shaft and the left end of the connecting rod are provided with grooves at the top and bottom, and a snap-fit ​​plate is slidably connected in each groove. The upper end of the snap-fit ​​plate and the inner end of the pressing block are both arc-shaped and fit together. A protrusion is provided on the inner side of the right end of the snap-fit ​​plate, and the protrusion is embedded in the groove of the connecting rod.

[0008] The present invention further illustrates that an air hole is provided inside the left side of the shaft, and the air hole is connected to an external air pump pipe. An air groove is connected to the right end of the air hole. A top shaft is integrally formed in the middle of the inner end of the snap-fit ​​plate, and the top shaft is slidably connected in the air groove.

[0009] The present invention further illustrates that the snap-fit ​​plate has a through hole inside, and a spring shaft is slidably connected inside the through hole.

[0010] The present invention further illustrates that the conical block includes an upper conical block and a lower conical block, and the upper conical block and the lower conical block are both axially connected to the connecting rod and are arranged opposite to each other.

[0011] The present invention further illustrates that two extrusion rods are rotatably connected to the right side of the inner wall of the roller shaft, and the left ends of the upper and lower cone blocks are both rounded.

[0012] The present invention further illustrates that the two extrusion rods are slidably connected to the inner contact points of the upper and lower cone blocks, respectively, and the left end is spherical.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention extrudes nitrile rubber and neoprene rubber and provides shear force. The mechanical shear force and the extrusion action between the rollers destroy the entanglement structure of the raw rubber molecular chains, reduce the elasticity of the raw rubber, and improve its plasticity and plasticity. Moreover, the recycled plastic waste can play a green and environmentally friendly role. When nitrile rubber and chloroprene rubber are extruded by two rollers, the extrusion of nitrile rubber and chloroprene rubber by the arc-shaped block and the conical block increases the shear force of the two rollers on the nitrile rubber and chloroprene rubber, thereby accelerating the plasticizing efficiency. Furthermore, the nitrile rubber and chloroprene rubber on the material cavity wall can be scraped off to ensure that the nitrile rubber and chloroprene rubber are fully mixed and improve the plasticizing quality. When the conical block and the arc-shaped block are no longer in contact, the force on the extrusion block is reduced, allowing the nitrile rubber and chloroprene rubber to smoothly enter between the two rollers, further improving the mixing effect of nitrile rubber and chloroprene rubber. The preparation efficiency and preparation quality of high abrasion-resistant carbon black reinforced rubber rollers are greatly improved. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the roller mounting position according to the present invention; Figure 3 This is a schematic diagram of the internal structure of one of the rollers of the present invention; Figure 4 This is an exploded view of the internal structure of one of the rollers of this invention; Figure 5 This is a plan view of the internal structure of one of the rollers of the present invention; Figure 6 This is a schematic diagram of the initial position of the snap-fit ​​plate of the present invention; In the diagram: 1. Base; 2. Drive component; 3. Support plate; 4. Roller; 41. Shaft; 411. Air hole; 42. Connecting rod; 43. Extrusion block; 431. Arc block; 44. Clip plate; 441. Protrusion; 442. Top shaft; 45. Elastic shaft; 46. Upper cone block; 47. Lower cone block; 48. Extrusion rod; 5. Material cavity. Detailed Implementation

[0015] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-6The present invention provides a technical solution: a high abrasion-resistant carbon black reinforced rubber roller preparation device, including a two-roll mill and a three-roll mill. The two-roll mill includes a base 1, a drive component 2, two support plates 3, two roller shafts 4 and a material chamber 5. The material cavity 5 is fixedly installed between two support plates 3. The two support plates 3 are fixedly installed on the upper left and right sides of the base 1 respectively. The two roller shafts 4 are both bearing installed between the two support plates 3 and are arranged opposite to each other and located in the material cavity 5. The output end of the drive component 2 is connected to the two roller shafts 4. The material cavity 5 has an inlet at the top and an outlet at the bottom. The main body of the high abrasion-resistant carbon black reinforced rubber roller is made of nitrile rubber and neoprene rubber. Nitrile rubber and neoprene rubber are generated by recycling plastic waste. One roller shaft 4 includes a shaft 41, a connecting rod 42, a conical block and two extrusion blocks 43, and is hollow inside. A fixing block is integrally formed on the left side of the left support plate 3. The shaft 41 is rotatably connected to the inside of the roller shaft 4, and its left end is fixedly connected to the fixing block. The connecting rod 42 is connected to the shaft 41, and the conical block is set on the outside of the connecting rod 42. Two sliding grooves are provided on the outside of the roller shaft 4, and the two extrusion blocks 43 are slidably connected in the two sliding grooves. An arc-shaped block 431 is integrally formed on the inner side of the two extrusion blocks 43. After the roller shaft 4 rotates, the arc-shaped block 431 and the conical block come into contact with each other. The nitrile rubber and neoprene rubber generated by recycling plastic waste are fed into the feed chamber 5 through the feed inlet and then enter between the two rollers 4. The drive component 2 then runs, causing the two rollers 4 to rotate synchronously in opposite directions, extruding the nitrile rubber and neoprene rubber and providing shear force. Through the mechanical shear force and the extrusion action between the rollers 4, the entangled structure of the raw rubber molecular chain is broken, reducing the elasticity of the raw rubber and improving its plasticity and malleability. Moreover, the recycled plastic waste can play a green and environmentally friendly role. When the two rollers 4 extrude nitrile rubber and chloroprene rubber, the arc-shaped block 431 inside one of the rollers 4, when the roller 4 rotates to the point where the extrusion block 43 contacts the other roller 4, contacts the outer surface of the conical block and is extruded by the conical block. This causes the extrusion block 43 to slide outward along the groove under force, extruding the nitrile rubber and chloroprene rubber, increasing the shear force of the two rollers 4 on the nitrile rubber and chloroprene rubber, thereby accelerating the plasticizing efficiency. Furthermore, the nitrile rubber and chloroprene rubber on the wall of the material cavity 5 can be scraped off to ensure that the nitrile rubber and chloroprene rubber are fully mixed and improve the plasticizing quality. When the conical block and the arc-shaped block 431 disengage, the force on the extrusion block 43 decreases, allowing the nitrile rubber and chloroprene rubber to smoothly enter between the two rollers 4, further improving the mixing effect of the nitrile rubber and chloroprene rubber. The preparation efficiency and preparation quality of the high abrasion-resistant carbon black reinforced rubber roller are greatly improved.

[0017] The plasticizing steps on an open mill include: Step S1: Recycle plastic waste and produce nitrile rubber and chloroprene rubber. Prepare raw materials, including nitrile rubber, chloroprene rubber, high abrasion-resistant carbon black, zinc oxide, stearic acid, antioxidant, paraffin wax, dioctyl phthalate, sulfur, and accelerator. Step S2: Add nitrile rubber and chloroprene rubber to a two-roll mill and masticate until the rubber surface is smooth and there are no obvious particles to obtain the masticated rubber. Then, perform segmented mixing. Place the masticated rubber in a three-stage mixer and add high abrasion-resistant carbon black, zinc oxide, stearic acid, antioxidant, paraffin wax, dioctyl phthalate, sulfur and accelerator to mix and obtain the compounded rubber. Step S3: Finally, the rubber roller is formed, vulcanized and post-processed in sequence to complete the production of the high wear-resistant carbon black reinforced rubber roller. The core purpose of rubber plasticizing is to reduce the elasticity of raw rubber and increase its plasticity and malleability, transforming it from a highly elastic solid into a soft and easily processed state. This facilitates uniform mixing with additives such as carbon black and vulcanizing agents, while also improving the compatibility of the rubber compound with molds and ensuring molding quality.

[0018] Connecting rod 42 is threadedly connected to shaft 41; The right end of the shaft 41 and the left end of the connecting rod 42 are provided with grooves at the top and bottom. The locking plate 44 is slidably connected in the groove. The upper end of the locking plate 44 and the inner end of the pressing block 43 are arc-shaped and fit together. The inner side of the right end of the locking plate 44 is provided with a protrusion 441, and the protrusion 441 is embedded in the groove of the connecting rod 42.

[0019] The left side of the shaft 41 is provided with an air hole 411, which is connected to an external air pump pipe. The right end of the air hole 411 is connected to an air groove. The inner end of the snap-fit ​​plate 44 is integrally formed with a top shaft 442, which is slidably connected to the air groove. When it is necessary to adjust the rubber shear force and extrusion force when plasticizing, gas is injected into the air hole 411 through an external air pump, and then enters the air groove through the air hole 411. This causes the top shaft 442 to be pushed by air pressure, thereby driving the snap-fit ​​plate 44 to slide upward through the groove. The upper arc-shaped part of the snap-fit ​​plate 44 is embedded in the arc-shaped part of the extrusion block 43. At the same time, due to the push of the air pressure in the air groove, the top shaft 442 is disengaged from the groove of the shaft rod 41 and contacts it. The protrusion 441 is still located in the groove of the connecting rod 42. When the roller shaft 4 rotates again, the snap-fit ​​plate 44 drives the connecting rod 42 to rotate, causing it to move to the left while rotating through the threaded part, thereby driving the conical block to move to the left. After the position of the conical block is adjusted, the roller shaft 4 stops rotating a full number of revolutions, the air pump is turned off, the snap-fit ​​plate 44 re-secures the connecting rod 42 and the shaft rod 41, and disengages from the extrusion block 43. By adjusting the position of the conical block, the extrusion strength of the extrusion block 43 can be changed, thereby adjusting the shear force and extrusion force. The operation is automated, efficient, and can adapt to the plasticizing of rubber of different thicknesses, with a wide range of applications. At the same time, by setting the snap-fit ​​plate 44, the position of the conical block can be adjusted, and the connection state between the connecting rod 42 and the shaft 41 can be controlled. This ensures that when the conical block and the arc block 431 come into contact and rub against each other, the conical block will not rotate, thus ensuring smooth lifting for the extrusion of nitrile rubber and neoprene rubber.

[0020] The snap-fit ​​plate 44 has a through hole inside, and a spring shaft 45 is slidably connected inside the through hole; Simultaneously, when adjusting the position of the conical block, the snap-fit ​​plate 44 engages with the extrusion block 43, and the upper end of the elastic shaft 45 is squeezed by the inner side of the extrusion block 43, thereby extending out of the snap-fit ​​plate 44 and embedding into the groove. When adjusting the position of the conical block, the elastic shaft 45 and the groove squeeze each other, causing the elastic shaft 45 to deform and generate a reaction force to slow down the adjustment speed, thereby improving the accuracy of the conical block position adjustment and improving the accuracy of the shear force and extrusion force adjustment for nitrile rubber and neoprene rubber. Furthermore, the reaction force generated by the deformation of the elastic shaft 45 causes the snap-fit ​​plate 44 to shake when rotating, causing the roller 4 to shake slightly, thereby shaking off the nitrile rubber and neoprene rubber adhering to the top for re-extrusion, further improving the mixing effect of nitrile rubber and neoprene rubber and enhancing the preparation quality.

[0021] The conical block includes an upper conical block 46 and a lower conical block 47, both of which are axially connected to the connecting rod 42 and are arranged opposite to each other.

[0022] Two extrusion rods 48 are rotatably connected to the right side of the inner wall of the roller 4, and the left ends of the upper cone 46 and the lower cone 47 are both rounded.

[0023] Two extrusion rods 48 are slidably connected to the inner contact points of the upper cone block 46 and the lower cone block 47, respectively, and the left end is spherical; When the conical block moves to its extreme position to the left, the extrusion block 43 exerts maximum extrusion and shear forces on the nitrile rubber and neoprene rubber. At this point, the extrusion rod 48 moves relative to the conical block, causing the left end of the extrusion rod 48 to enter between the upper conical block 46 and the lower conical block 47, thus spreading them apart. This reduces the taper while ensuring the extrusion force on the nitrile rubber and neoprene rubber. On the other hand, it prevents slippage when the arc block 431 and the conical block are squeezed together due to excessive taper, ensuring smooth operation and significantly reducing wear between the arc block 431 and the conical block, thereby relatively improving the service life of the structure.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preparing high abrasion-resistant carbon black reinforced rubber rollers, comprising a two-roll mill and a three-roll mixer, characterized in that: The open mill includes a base (1), a drive unit (2), two support plates (3), two rollers (4), and a material chamber (5); The material cavity (5) is fixedly installed between two support plates (3). The two support plates (3) are respectively fixedly installed on the upper left and right sides of the base (1). The two roller shafts (4) are both bearing installed between the two support plates (3) and are arranged opposite to each other, and are located in the material cavity (5). The output end of the drive component (2) is connected to the two roller shafts (4). The material cavity (5) has an inlet at the top and an outlet at the bottom. The main body of the high wear-resistant carbon black reinforced rubber roller is made of nitrile rubber and neoprene rubber. The nitrile rubber and neoprene rubber are generated by recycling plastic waste. One of the roller shafts (4) includes a shaft (41) and a connecting rod. The rod (42), the conical block and the two extrusion blocks (43) are hollow inside. The left side of the support plate (3) is integrally formed with a fixing block. The shaft (41) is rotatably connected to the inside of the roller shaft (4) and the left end is fixedly connected to the fixing block. The connecting rod (42) is connected to the shaft (41) and the conical block is set on the outside of the connecting rod (42). The outside of the roller shaft (4) is provided with two sliding grooves, and the two extrusion blocks (43) are slidably connected in the two sliding grooves respectively. The inner side of the two extrusion blocks (43) is integrally formed with an arc block (431). After the roller shaft (4) rotates, the arc block (431) and the conical block come into contact with each other.

2. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 1, characterized in that: The plasticizing steps of the open mill include: Step S1, recycling plastic waste and producing nitrile rubber and chloroprene rubber, preparing raw materials, including nitrile rubber, chloroprene rubber, high abrasion-resistant carbon black, zinc oxide, stearic acid, antioxidant, paraffin wax, dioctyl phthalate, sulfur and accelerator. Step S2: Add nitrile rubber and chloroprene rubber to a two-roll mill and masticate until the rubber surface is smooth and there are no obvious particles to obtain the masticated rubber. Then, perform segmented mixing. Place the masticated rubber in a three-stage mixer and add high abrasion-resistant carbon black, zinc oxide, stearic acid, antioxidant, paraffin wax, dioctyl phthalate, sulfur and accelerator to mix and obtain the compounded rubber. Step S3: Finally, the rubber roller is formed, vulcanized and post-processed in sequence to complete the production of the high abrasion-resistant carbon black reinforced rubber roller.

3. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 2, characterized in that: The connecting rod (42) is threadedly connected to the shaft (41). The right end of the shaft (41) and the left end of the connecting rod (42) are provided with grooves at the top and bottom. The grooves are slidably connected with snap-fit ​​plates (44). The upper end of the snap-fit ​​plate (44) and the inner end of the pressing block (43) are arc-shaped and fit together. The inner side of the right end of the snap-fit ​​plate (44) is provided with a protrusion (441), and the protrusion (441) is embedded in the groove of the connecting rod (42).

4. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 3, characterized in that: The shaft (41) has an air hole (411) inside on the left side, and the air hole (411) is connected to an external air pump pipe. The right end of the air hole (411) is connected to an air groove. The inner end of the snap-fit ​​plate (44) has an integrally formed top shaft (442), which is slidably connected to the air groove.

5. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 4, characterized in that: The snap-fit ​​plate (44) has a through hole inside, and a spring shaft (45) is slidably connected inside the through hole.

6. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 5, characterized in that: The conical block includes an upper conical block (46) and a lower conical block (47), and the upper conical block (46) and the lower conical block (47) are both axially connected to the connecting rod (42) and are arranged opposite to each other.

7. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 6, characterized in that: Two extrusion rods (48) are rotatably connected to the right side of the inner wall of the roller (4), and the left ends of the upper cone (46) and the lower cone (47) are both rounded.

8. The apparatus for preparing a high abrasion-resistant carbon black reinforced rubber roller according to claim 7, characterized in that: The two extrusion rods (48) are slidably connected to the inner side of the upper cone block (46) and the lower cone block (47), respectively, and the left end is spherical.

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