Rubber low-temperature masticator system with variable-diameter sectional type rotor

Abstract

The invention relates to the technical field of rubber milling, and discloses a rubber low-temperature milling machine system with variable-diameter sectional rotors, which comprises a base, a mixing chamber, two rotors rotatably mounted in the mixing chamber, and transmission units arranged on two sides of the mixing chamber, the pressurizing unit is arranged at the top end of the mixing chamber, a cleaning piece is arranged in the mixing chamber and comprises a plurality of scrapers arranged in the mixing chamber in a sliding manner, and every two adjacent sliding blocks are connected through an arc-shaped plate. The rubber low-temperature masticator system with the variable-diameter sectional type rotor can effectively solve the problems that in the prior art, rubber adheres to the inner wall of a mixing chamber under the action of mechanical shearing and is gradually accumulated and solidified to form hard blocks, friction between the rubber and moving parts such as the rotor and a top peg is increased, meanwhile, residual rubber can be mixed into a rubber material of the next batch, and the service life of the rubber material is prolonged. And cross contamination among different batches of sizing materials is caused.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber kneading, and particularly relates to a rubber low-temperature kneading machine system with a variable-diameter segmented rotor. Background Art

[0002] A low-temperature kneading machine is a special mixing equipment mainly used for the processing of high-molecular materials such as rubber and plastics. Its design purpose is to achieve efficient mixing of materials under low-temperature conditions through precise temperature control and mechanical action, and prepare kneaded rubber with specific properties.

[0003] As an important component of the kneading machine, the mixing chamber provides a sealed environment for the rubber kneading process. The mixing chamber usually consists of a rotor, upper and lower plugs, a machine shell, a discharge door, etc., and completes the shearing and stirring work of the rubber through the rotation of the rotor.

[0004] During the actual operation of the low-temperature kneading machine, due to the viscoelasticity of rubber, under the action of mechanical shearing, inevitably a part of the rubber adheres to the inner wall of the mixing chamber. If the inner wall of the working mixing chamber is not cleaned in time, the adhered rubber will gradually accumulate and solidify to form hard blocks. These hard blocks will not only increase the friction with moving parts such as the rotor and the plug, but also the residual rubber will mix into the next batch of rubber materials, resulting in the problem of cross-contamination between different batches of rubber materials. Summary of the Invention

[0005] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a rubber low-temperature kneading machine system with a variable-diameter segmented rotor, which can effectively solve the problems in the prior art that due to the viscoelasticity of rubber, under the action of mechanical shearing, inevitably a part of the rubber adheres to the inner wall of the mixing chamber. If the inner wall of the working mixing chamber is not cleaned in time, the adhered rubber will gradually accumulate and solidify to form hard blocks. These hard blocks will not only increase the friction with moving parts such as the rotor and the plug, but also the residual rubber will mix into the next batch of rubber materials, resulting in the problem of cross-contamination between different batches of rubber materials.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: The present invention provides a rubber low-temperature kneading machine system with a variable-diameter segmented rotor, including: A base; A kneading mechanism, the kneading mechanism includes a mixing chamber installed on the upper surface of the base through two support plates. A kneading group is arranged inside the mixing chamber. The kneading group includes two rotors that are annular and rotatably installed inside the mixing chamber. A plurality of mounting through slots one and mounting through slots two are arranged on the arc-shaped outer wall of the rotor along the circumferential direction. A pushing member is arranged inside the rotor in a matching manner; The drive unit is provided with two, which are respectively arranged on the left and right sides of the kneading mechanism, and one end of each of the two rotors is connected to any one of the drive units; The pressurizing unit is arranged at the top of the kneading chamber, and the rubber is pressurized by the downward pressure of the arranged pressurizing unit; Wherein, two arc-shaped grooves are symmetrically distributed in the front and back on the inner side wall of the kneading chamber, and a cleaning member for scraping the inner wall of the kneading chamber is slidably arranged inside the two arc-shaped grooves together; Wherein, the cleaning member includes a plurality of scrapers that are always slidably arranged inside the arc-shaped grooves through sliders, and adjacent two sliders are connected by an arc-shaped plate.

[0007] Furthermore, two blocking blocks are fixedly installed inside the arc-shaped grooves in a front-back symmetric manner, and one end of each of the two blocking blocks away from each other is fixedly connected to the adjacent slider through a return spring, and magnetic members are respectively fixedly connected to the upper surfaces of two sliders that are staggered at the top inside the two arc-shaped grooves.

[0008] Furthermore, installation through groove two is arranged between adjacent installation through groove one, and the kneading group further includes an actuator corresponding to the positions of installation through groove one and installation through groove two. The actuator corresponding to the position of installation through groove one includes three bearing plates that are distributed in the front-back direction and are connected to the inner wall of the rotor through a plurality of telescopic guide rods. One end of the bearing plate close to the outer wall of the rotor is fixedly connected with a ridge that can be used for shearing rubber.

[0009] Furthermore, the actuator corresponding to the position of installation through groove two includes support blocks that are slidably arranged inside installation through groove two in a left-right symmetric manner. A stirring roller in a W shape that can be used for stirring rubber is fixedly connected between the two support blocks through a shaft rod, and the lower end surfaces of the two support blocks are respectively fixedly connected with top plates in an inverted T shape that are connected to the inner wall of the rotor through telescopic guide rods.

[0010] Furthermore, the pushing member includes an installation sleeve arranged inside the rotor and having a sliding groove opened on its outer wall along the circumferential direction. A convex block is fixedly arranged at the rightmost end of the sliding groove. Two annular members connected by a linkage pipe are slidably arranged on the outer wall of the installation sleeve. Pushing blocks with chamfers opened on the left and right side walls are fixedly arranged on the circumferential outer walls of the two annular members corresponding to the positions of the bearing plates, and the pushing blocks are respectively attached to the corresponding bearing plates.

[0011] Furthermore, guiding grooves are opened on the outer wall of the linkage pipe along the circumferential direction corresponding to the number of convex blocks, and the convex block is always located inside the guiding groove. A circular disk connected to the other drive unit is also slidably arranged inside the installation sleeve. A support rod is fixedly arranged on the circumferential outer wall of the circular disk corresponding to the position of the sliding groove. A plurality of support rods penetrate through the sliding groove and are rotationally connected to the inner wall of the annular member through a rotating disk.

[0012] Furthermore, a plurality of receiving grooves are respectively formed on the two inclined surfaces of the pushing block, and a rotating roller for reducing contact friction is rotatably arranged inside each of the plurality of receiving grooves.

[0013] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: The present invention is provided with a cleaning member. When the upper push rod moves downward, its lower end will first come into contact with and be magnetically fixed to two magnetic members arranged in a staggered manner and protruding from the arc-shaped groove. As the upper push rod continues to press down, the magnetic members enter the arc-shaped groove and synchronously drive a plurality of sliders to slide along the arc-shaped groove through the arc-shaped plate. Since the scraper is fixedly connected to the slider and the two blades of the scraper are in close contact with the inner wall of the mixing chamber, when the upper push rod pushes the magnetic members, a plurality of scrapers will synchronously slide along the arc-shaped groove driven by the sliders, and the rubber residues on the inner wall of the mixing chamber can be scraped off and the rubber can be pushed and the stirring work can be assisted through the blades. Through the cleaning of a plurality of scrapers, not only can the rubber residues adhered to them be effectively scraped off, preventing the phenomenon of rubber hard blocks formed due to long-term non-cleaning, but also the cross-contamination of different batches of rubber during the mixing process can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0015] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the mixing chamber and the rotor of an embodiment of the present invention; Figure 3 is a three-dimensional separated structural schematic diagram of the cleaning member of an embodiment of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the rotor and the pushing member of an embodiment of the present invention; Figure 5 is a three-dimensional separated structural schematic diagram of the rotor and the protruding rib of an embodiment of the present invention; Figure 6 is an embodiment of the present invention Figure 5 is a partial enlarged structural schematic diagram at A in the embodiment; Figure 7 is a three-dimensional separated structural schematic diagram of the rotor and the stirring roller of an embodiment of the present invention; Figure 8 is an embodiment of the present invention Figure 7 is a partial enlarged structural schematic diagram at B in the embodiment; Figure 9 Schematic three - dimensional structure diagram of the pushing member part in the embodiment of the present invention; Figure 10 Schematic three - dimensional separated structure diagram of the installation sleeve and the rotor in the embodiment of the present invention; Figure 11 Schematic three - dimensional separated structure diagram of the installation sleeve, the annular member and the linkage pipe in the embodiment of the present invention; Figure 12 In the embodiment of the present invention Figure 11 Schematic diagram of the partial enlargement at position C in the embodiment.

[0016] The reference numerals in the figure respectively represent: 1, base; 2, mixing mechanism; 21, support plate; 22, mixing chamber; 221, cleaning member; 2211, slider; 2212, scraper; 2213, arc plate; 2214, magnetic member; 23, mixing group; 231, rotor; 232, pushing member; 2321, installation sleeve; 2322, sliding groove; 2323, convex block; 2324, annular member; 2325, linkage pipe; 2326, pushing block; 2327, circular disc; 2328, support rod; 2329, rotating roller; 233, bearing plate; 234, rib; 235, support block; 236, stirring roller; 237, top plate; 3, transmission unit; 4, pressurization unit. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Embodiment:

[0020] Please refer to Figures 1 - 12 , the present invention provides a technical solution: a rubber low - temperature kneading machine system with a variable - diameter segmented rotor, including: Base 1; Mixing mechanism 2, the mixing mechanism 2 includes a mixing chamber 22 installed on the upper surface of the base 1 through two support plates 21. Inside the mixing chamber 22, there is a mixing group 23. The mixing group 23 includes two annular - shaped rotors 231 rotatably installed inside the mixing chamber 22. A plurality of first installation through - slots and second installation through - slots are circumferentially formed on the arc - shaped outer wall of the rotor 231. Inside the rotor 231, a pushing member 232 is cooperatively arranged; The drive unit 3 is provided with two drive units 3 which are respectively arranged on the left and right sides of the kneading mechanism 2, and one end of each of the two rotors 231 is connected to any one of the drive units 3; The pressurizing unit 4 is arranged at the top of the kneading chamber 22, and pressure is applied to the rubber by the downward pressure of the arranged pressurizing unit 4; Among them, two arc-shaped grooves are symmetrically distributed in the front and back on the inner side wall of the kneading chamber 22, and a cleaning member 221 for scraping the inner wall of the kneading chamber 22 is slidably arranged inside the two arc-shaped grooves together; Among them, the cleaning member 221 includes a plurality of scrapers 2212 that are always slidably arranged inside the arc-shaped grooves through sliders 2211, and adjacent two sliders 2211 are connected by an arc-shaped plate 2213.

[0021] Two blocking blocks are fixedly installed inside the arc-shaped grooves in a front-back symmetric manner, and one end of each of the two blocking blocks away from each other is fixedly connected to the adjacent slider 2211 through a return spring. Magnetic members 2214 are respectively fixedly connected to the upper surfaces of two sliders 2211 that are staggered at the top inside the two arc-shaped grooves.

[0022] The installation through groove two is opened between adjacent installation through grooves one. The kneading group 23 further includes actuators corresponding to the positions of the installation through groove one and the installation through groove two. The actuator corresponding to the position of the installation through groove one includes three bearing plates 233 that are distributed in the front-back direction and are connected to the inner wall of the rotor 231 through a plurality of telescopic guide rods. One end of the bearing plate 233 close to the outer wall of the rotor 231 is fixedly connected with a protrusion 234 that can be used for shearing rubber.

[0023] The actuator corresponding to the position of the installation through groove two includes support blocks 235 that are slidably arranged inside the installation through groove two in a left-right symmetric manner. A stirring roller 236 in a W shape that can be used for stirring rubber is fixedly connected between the two support blocks 235 through a shaft rod. The lower end surfaces of the two support blocks 235 are fixedly connected with top plates 237 in an inverted T shape that are connected to the inner wall of the rotor 231 through telescopic guide rods.

[0024] The pushing member 232 includes an installation sleeve 2321 arranged inside the rotor 231 and having a sliding groove 2322 opened on the outer wall in the circumferential direction. A convex block 2323 is fixedly arranged at the rightmost end of the sliding groove 2322. Two annular members 2324 are slidably arranged on the outer wall of the installation sleeve 2321 and are connected by a linkage tube 2325. Pushing blocks 2326 with chamfers opened on the left and right side walls are fixedly arranged on the circumferential outer walls of the two annular members 2324 corresponding to the positions of the bearing plates 233, and the pushing blocks 2326 are respectively in contact with the corresponding bearing plates 233.

[0025] The outer wall of the linkage pipe 2325 is provided with guiding grooves corresponding to the number of bumps 2323 in the circumferential direction. The bumps 2323 are always located inside the guiding grooves. A circular disk 2327 connected to another drive unit 3 is also slidably arranged inside the mounting sleeve 2321. Support rods 2328 are fixedly arranged on the circumferential outer wall of the circular disk 2327 corresponding to the positions of the sliding grooves 2322. A plurality of support rods 2328 penetrate through the sliding grooves 2322 and are rotatably connected to the inner wall of the annular member 2324 through a rotating disk.

[0026] A plurality of receiving grooves are respectively formed on the two inclined surfaces of the pushing block 2326, and a rotating roller 2329 for reducing contact friction is rotatably arranged inside each of the plurality of receiving grooves.

[0027] During specific operation, the feeding and shearing of rubber: During the process of rubber mixing, first, a batch of raw rubber is fed along the feeding pipe (not shown in the accompanying drawings of the specification) (when the rubber mixing work has not been initially carried out, the pressing unit 4 is in the preparation stage and has not been pressed down. The purpose is to avoid blocking the feeding of raw rubber. At the same time, when the pressing unit 4 is not pressed down, the area inside the mixing chamber 22 is relatively large, so it can accommodate more raw rubber fed). Then, when a batch of raw rubber has been fed, the temperature control unit (not shown in the accompanying drawings of the specification) arranged on the mixing chamber 22 is controlled to work, and the temperature control of the inside of the mixing chamber 22 is realized to ensure that the temperature inside the mixing chamber 22 is maintained within the range of zero degree to room temperature. At the same time, the cylinder in the pressing unit 4 is controlled to drive the upper ejector rod into the mixing chamber 22, and pressure is applied to the rubber inside the mixing chamber 22 through the upper ejector rod.

[0028] Subsequently, the drive unit 3 connected to the two rotors 231 on one side drives the two rotors 231 to rotate synchronously and meshingly, and the shearing of the rubber inside the mixing chamber 22 is completed through the ridges 234 arranged on the two rotors 231 in the circumferential direction (the ridges 234 located inside the first mounting through groove are of two different shapes, that is, one type of ridge 234 is conical and has serrated grooves on its conical outer wall, and the other type of ridge 234 is cylindrical and its outer wall is provided with an arc-shaped smooth section. When the two annular members 2324 are in the initial position, the pushing blocks 2326 arranged on their outer walls in the circumferential direction are respectively in contact with the corresponding bearing plates 233. The pushing of the pushing blocks 2326 causes a plurality of bearing plates 233 to move away synchronously and drives the conical ridges 234 connected thereto to protrude. As the two rotors 231 continue to rotate, the shearing of the rubber is completed through the ridges 234 that are conical and have serrated grooves on their outer walls).

[0029] It should be noted that the two rotors 231 are respectively provided with a relatively large number of conical ridges 234 and cylindrical ridges 234. During the rotation of the rotors 231, these ridges 234 mesh with each other to realize the shearing of the rubber in the mixing chamber 22. Serrated grooves are provided on the conical ridges 234, and their sharp edges significantly increase the contact area between the rotor 231 and the rubber, thereby enhancing the mechanical biting force between the two. During the rotation of the rotor 231, the sharp edges of the serrated grooves apply a high-intensity shearing force to the rubber. This shearing force can effectively break the rubber molecular chains and promote their redistribution, thereby optimizing the internal structure of the rubber. At the same time, the groove design of the serrated grooves further increases the frictional force between the ridges 234 and the rubber, effectively preventing the rubber from slipping during the processing. Through the design of the serrated grooves, the rubber can always closely adhere to the surface of the rotor 231, avoiding the problem of reduced processing efficiency caused by insufficient frictional force, not only improving the efficiency of rubber processing but also ensuring the processing quality.

[0030] When the two rotors 231 shear the rubber inside the mixing chamber 22, the pressurizing unit 4 drives the upper ejector rod to reciprocate up and down through the cylinder, and realizes the extrusion of the rubber during the shearing process through the upper ejector rod. During this process, when the upper ejector rod moves downward, its lower end will first come into contact with and be magnetically fixed to the two magnetic members 2214 that are arranged in a staggered manner and protrude from the arc-shaped grooves. As the upper ejector rod continues to press down, the magnetic members 2214 enter the inside of the arc-shaped grooves and synchronously drive a plurality of sliders 2211 to slide along the arc-shaped grooves through the arc-shaped plates 2213. Since the scraping blades 2212 are fixedly connected to the sliders 2211 and the two blades of the scraping blades 2212 are in close contact with the inner wall of the mixing chamber 22, when the upper ejector rod pushes the magnetic members 2214, a plurality of scraping blades 2212 will synchronously slide along the arc-shaped grooves driven by the sliders 2211, and the inner wall of the mixing chamber 22 is scraped by the blades (during the rubber mixing process, the residual rubber material may adhere to the inner wall of the mixing chamber 22. Under the action of high temperature and continuous shearing force, these residues may gradually solidify and form hard lumps. These hard lumps will not only affect the efficiency of the mixing process but also cause additional wear to the rotor 231 and the inner wall of the mixing chamber 22, shortening the service life of the equipment. A plurality of scraping blades 2212 arranged in the mixing chamber 22 also synchronously drive a plurality of scraping blades 2212 to rotate reciprocally along the inner wall of the mixing chamber 22 under the reciprocating movement of the upper ejector rod. Since the two blades of the scraping blades 2212 are in close contact with the inner wall of the mixing chamber 22, the rubber residues adhering to it can be effectively scraped off, preventing the phenomenon of rubber hard lumps formed due to long-term non-cleaning. In addition, the coordinated reciprocating scraping action of a plurality of scraping blades 2212 can also avoid the cross-contamination of different batches of rubber during the mixing process. Through the cooperation between the pressurizing unit 4 and a plurality of scraping blades 2212, not only the cleanliness and efficiency of the mixing process are ensured, but also the quality of the mixed rubber is improved).

[0031] Switching of the ridges 234 and stirring of the rubber: During the synchronous rotation of the two rotors 231, taking the rear rotor 231 as an example, another transmission unit 3 gradually pushes the circular disk 2327 and makes the circular disk 2327 slide along the mounting sleeve 2321. During the sliding process of the circular disk 2327, the ring member 2324 and the push block 2326 are driven to move synchronously through a plurality of support rods 2328 arranged on its outer wall in a circumferential direction. In the initial state, the two push blocks 2326 are respectively fitted with the left and right support plates 233 (three ridges 234 are arranged inside the mounting groove 1, wherein two conical ridges 234 are arranged and are respectively located on the left and right sides of the cylindrical ridge 234, and a support plate 233 is arranged at one end of the three ridges 234 close to the ring member 2324), and the telescopic guide rods arranged on the left and right support plates 233 are in a compressed state through the push of the push blocks 2326, and as the two push blocks 2326 are driven by the ring member 2324 The left and right supporting plates 233 are gradually moved away from the left and right supporting plates 233. The left and right supporting plates 233 are always in close contact with the push block 2326 under the action of the rebound and reset of their respective telescopic guide rods. Since the two side walls of the push block 2326 are chamfered, the height of the protruding rotor 231 of the left and right supporting plates 233 when they are in contact with the push block 2326 gradually decreases (at different stages of rubber mixing, the requirements for shear force and mixing effect are different. Therefore, it is necessary to adjust the extended length of the ridge 234 according to the specific working conditions. At the initial stage of mixing, the raw rubber is still in granular or block form, and a larger shear force is required to break the rubber blocks and preliminarily mix the compounding agents. At this time, the extended length of the ridge 234 is longer to enhance the shearing effect and ensure rapid crushing and preliminary dispersion of the rubber. As the mixing work continues, in order to avoid overheating or degradation of the rubber due to excessive shearing, the extended length of the ridge 234 is appropriately reduced by pushing the push block 2326 to balance the shear force and mixing uniformity).

[0032] During the process that the two pushing blocks 2326 are continuously pushed by the circular disk 2327 and the support rod 2328 and gradually separate from the left and right bearing plates 233, the left pushing block 2326 gradually contacts the middle bearing plate 233, and gradually pushes the middle bearing plate 233 during the contact process, so that the cylindrical ridges 234 protrude and gradually rise higher than the conical ridges 234 (during the movement of the left pushing block 2326, the chamfer design on its outer wall and several rotating rollers 2329 arranged on the inclined surface of the pushing block 2326 work together to reduce the friction force when the middle bearing plate 233 contacts the pushing block 2326. Specifically, the chamfer design can guide the pushing block 2326 to smoothly contact the middle bearing plate 233, while the rotating rollers 2329 convert the sliding friction into rolling friction through their free rotation, significantly reducing the friction coefficient. This design effectively improves the smoothness of the switching between the left bearing plate 233 and the middle bearing plate 233, reduces the resistance during the switching process, and makes the movement of the bearing plate 233 smoother). When the cylindrical ridges 234 complete the switching with the conical ridges 234, the cylindrical ridges 234 will take on the task of further mixing the rubber. Compared with the conical ridges 234 with serrated grooves, the surface of the cylindrical ridges 234 is a smooth arc design. This smooth arc surface can significantly reduce the shear strength of the rubber, thereby avoiding potential damage to the rubber molecular chains caused by excessive shearing, which is beneficial to maintaining the performance of the rubber. Through the switching mechanism of the shape of the ridges 234, the kneading process can flexibly adjust the magnitude of the shear force as needed, realizing more refined processing control of the rubber material. In the initial stage when high-intensity shearing is required to break the rubber molecular chains and promote their redistribution, the conical ridges 234 can provide the necessary shear force, while in the subsequent stage when gentle mixing is required to avoid excessive shearing, the cylindrical ridges 234 can provide a more gentle treatment, thus ensuring the quality of the final product.

[0033] It should be noted that during the process that the two annular parts 2324 are pushed by the circular disk 2327, the linkage pipe 2325 also moves synchronously, and the convex block 2323 is located inside the guide groove and slides.

[0034] After the cylindrical ridges 234 stir the rubber for a period of time, in order to improve the plasticity and fluidity of the rubber, the drive unit 3 is continuously controlled to push the circular disk 2327 to slide along the mounting sleeve 2321. The annular member 2324 and the linkage pipe 2325 continue to move under the push of the circular disk 2327. During the movement of the linkage pipe 2325, the annular member 2324 is guided to rotate with the push block 2326 through the guiding groove opened on its outer wall (the guiding groove is composed of two symmetrically arranged J-shaped through grooves. Since the convex block 2323 is fixedly arranged on the outer wall of the mounting sleeve 2321, when the linkage pipe 2325 is pushed, the cooperation between the convex block 2323 and the guiding groove causes the linkage pipe 2325 and the two annular members 2324 to change angles). During the rotation of the annular member 2324, the push block 2326 arranged thereon is synchronously driven to rotate. When the push block 2326 rotates, it first disengages from the middle bearing plate 233. The cylindrical ridges 234 retract under the rebound reset of their respective bearing plates 233 and the telescopic guide rods. After the push block 2326 rotates, it pushes the top plate 237, and the support block 235 protrudes from the rotor 231 under the movement of the stirring roller 236 on the top plate 237, thus completing the switching work between the cylindrical ridges 234 and the W-shaped stirring roller 236 (in the later plasticization stage of the rubber, the rubber has been basically mixed evenly, and the complex geometric structure of the W-shaped stirring roller 236 can more effectively change the flow path of the rubber, reduce local agglomeration phenomena, and significantly improve the mixing uniformity). After stirring for a period of time, the discharging of the rubber after mixing is completed by opening the lower ejector rod (not shown in the attached drawings of the specification).

[0035] In the rubber mixing process, the design of switching different types of ridges 234 in stages can significantly improve the mixing efficiency, rubber uniformity and equipment performance. Specifically, in the initial stage, conical serrated ridges 234 are used, and the high-intensity shear force generated by them effectively promotes the crushing of rubber particles and the preliminary dispersion of compounding agents, laying a foundation for subsequent mixing. In the middle stage, it is switched to cylindrical ridges 234, and their smooth arc surfaces provide a gentle stirring effect to ensure the uniform distribution of compounding agents in the rubber and avoid local agglomeration. In the final stage, a W-shaped stirring roller 236 is used, and its complex geometric shape optimizes the rubber flow path. Through forced cutting and flipping movements, the mixing uniformity is further improved and local agglomeration of rubber is avoided, ensuring the consistency of rubber performance.

[0036] It is worth emphasizing that the rubber low-temperature kneading machine system based on the variable-diameter segmented rotor 231 mainly has the following advantages: Advantage 1: When the upper ejector rod moves downward, its lower end will first come into contact with and be magnetically fixed to two magnetic members 2214 that are arranged in a staggered manner and protrude from the arc-shaped groove. As the upper ejector rod continues to press down, the magnetic members 2214 enter the interior of the arc-shaped groove and synchronously drive a number of sliders 2211 to slide along the arc-shaped groove through the arc-shaped plate 2213. Since the scraper 2212 is fixedly connected to the slider 2211 and the two cutting edges of the scraper 2212 are in close contact with the inner wall of the mixing chamber 22, when the upper ejector rod pushes the magnetic members 2214, a number of scrapers 2212 will synchronously slide along the arc-shaped groove driven by the sliders 2211, and the cutting edges are used to scrape the residual rubber on the inner wall of the mixing chamber 22 and push the rubber to assist in the stirring work. This not only can effectively scrape the rubber residues adhering to it, prevent the formation of rubber hard blocks due to long-term non-cleaning, but also can avoid the cross-contamination of rubber in different batches during the mixing process.

[0037] Advantage 2: The conical protrusion 234 is provided with a serrated groove, and its sharp edges significantly increase the contact area between the rotor 231 and the rubber, thereby enhancing the mechanical biting force between the two. During the rotation of the rotor 231, the sharp edges of the serrated groove will apply a high-intensity shear force to the rubber. This shear force can effectively break the rubber molecular chains and promote their redistribution, thereby optimizing the internal structure of the rubber. At the same time, the groove design of the serrated groove further increases the friction force between the protrusion 234 and the rubber, effectively preventing the rubber from slipping during the processing. Through the design of the serrated groove, the rubber can always closely adhere to the surface of the rotor 231, avoiding the problem of reduced processing efficiency caused by insufficient friction force, which not only improves the efficiency of rubber processing but also ensures the processing quality.

[0038] Advantage 3: During the movement of the left-side pushing block 2326, the chamfer design on its outer wall and a number of rotating rollers 2329 provided on the inclined surface of the pushing block 2326 work together to reduce the friction force when the middle bearing plate 233 comes into contact with the pushing block 2326. Specifically, the chamfer design can guide the pushing block 2326 to smoothly come into contact with the middle bearing plate 233, while the rotating rollers 2329 convert the sliding friction into rolling friction through their free rotation, significantly reducing the friction coefficient. This design effectively improves the smoothness of the switching between the left-side bearing plate 233 and the middle bearing plate 233, reduces the resistance during the switching process, and makes the movement of the bearing plate 233 more smooth.

[0039] Advantage 4: In the rubber mixing process, the design of switching different types of ridges 234 in stages can significantly improve the mixing efficiency, rubber uniformity, and equipment performance. Specifically, in the initial stage, conical serrated ridges 234 are used, and the high-intensity shear force generated by them effectively promotes the crushing of rubber particles and the preliminary dispersion of compounding agents, laying a foundation for subsequent mixing. In the middle stage, it is switched to cylindrical ridges 234, and their smooth arc surfaces provide a gentle stirring effect to ensure the uniform distribution of compounding agents in the rubber and avoid local agglomeration. In the final stage, a W-shaped stirring roller 236 is used, and its complex geometric shape optimizes the rubber flow path. Through forced cutting and flipping movements, the mixing uniformity is further improved and local agglomeration of rubber is avoided, ensuring the consistency of rubber performance.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rubber low-temperature kneading machine system with a variable-diameter segmented rotor, characterized in that, Comprising: Base (1); Mixing mechanism (2), the mixing mechanism (2) includes a mixing chamber (22) installed on the upper surface of the base (1) through two support plates (21), a mixing group (23) is arranged inside the mixing chamber (22), the mixing group (23) includes two rotors (231) in a ring shape and rotatably installed inside the mixing chamber (22), a plurality of mounting through slots one and mounting through slots two are formed in the arc-shaped outer wall of the rotor (231) along the circumferential direction, and a pushing member (232) is arranged inside the rotor (231) in a matching manner; Drive unit (3), two drive units (3) are provided and are respectively arranged on the left and right sides of the mixing mechanism (2), and one end of each of the two rotors (231) is connected to any one of the drive units (3); Pressurizing unit (4), the pressurizing unit (4) is arranged at the top of the mixing chamber (22), and pressure is applied to the rubber by the downward pressure of the provided pressurizing unit (4); Wherein, two arc-shaped grooves are formed in the inner side wall of the mixing chamber (22) and are distributed symmetrically in the front and back, and a cleaning member (221) for scraping the inner wall of the mixing chamber (22) is slidably arranged inside the two arc-shaped grooves together; Wherein, the cleaning member (221) includes a plurality of scrapers (2212) always slidably arranged inside the arc-shaped grooves through sliders (2211), and adjacent two sliders (2211) are connected by an arc-shaped plate (2213).

2. The rubber low-temperature kneading machine system of a variable-diameter segmented rotor according to claim 1, wherein: Two blocking blocks are fixedly installed inside the arc-shaped grooves in a symmetric manner in the front and back, one end of each of the two blocking blocks away from each other is fixedly connected to the adjacent slider (2211) through a return spring, and magnetic members (2214) are respectively fixedly connected to the upper surfaces of two sliders (2211) that are staggered at the top inside the two arc-shaped grooves.

3. The rubber low-temperature kneading machine system of a variable-diameter segmented rotor according to claim 1, characterized in that: The mounting through slot two is formed between adjacent mounting through slots one, and the mixing group (23) further includes actuating members corresponding to the positions of the mounting through slots one and the mounting through slots two. The actuating member corresponding to the position of the mounting through slot one includes three bearing plates (233) distributed in the front and back direction and connected to the inner wall of the rotor (231) through a plurality of telescopic guide rods. One end of the bearing plate (233) close to the outer wall of the rotor (231) is fixedly connected with a ridge (234) for shearing rubber.

4. The rubber low-temperature kneading machine system of a variable-diameter segmented rotor according to claim 3, characterized in that: The actuating member corresponding to the position of the mounting through slot two includes support blocks (235) slidably arranged inside the mounting through slot two in a left-right symmetric manner. A stirring roller (236) in a W shape for stirring rubber is fixedly connected between the two support blocks (235) through a shaft rod. The lower end surfaces of the two support blocks (235) are respectively fixedly connected with top plates (237) in an inverted T shape and connected to the inner wall of the rotor (231) through telescopic guide rods.

5. The rubber low-temperature kneading machine system of a variable-diameter segmented rotor according to claim 1, characterized in that: The pushing member (232) includes an installation sleeve (2321) disposed inside the rotor (231) and having a sliding groove (2322) formed in the outer wall along the circumferential direction. A convex block (2323) is fixedly provided at the rightmost end of the sliding groove (2322). Two annular members (2324) connected by a linkage pipe (2325) are slidably disposed on the outer wall of the installation sleeve (2321). At positions corresponding to the bearing plates (233) on the circumferential outer walls of the two annular members (2324), pushing blocks (2326) with chamfers formed on the left and right side walls are fixedly provided. The pushing blocks (2326) are respectively in contact with the corresponding bearing plates (233).

6. The rubber low-temperature kneading machine system of a variable-diameter segmented rotor according to claim 5, characterized in that: Guide grooves are formed in the outer wall of the linkage pipe (2325) along the circumferential direction corresponding to the number of the convex blocks (2323). The convex blocks (2323) are always located inside the guide grooves. A circular disc (2327) connected to another transmission unit (3) is also slidably disposed inside the installation sleeve (2321). Support rods (2328) are fixedly provided on the circumferential outer wall of the circular disc (2327) at positions corresponding to the sliding grooves (2322). A plurality of the support rods (2328) penetrate through the sliding grooves (2322) and are rotatably connected to the inner walls of the annular members (2324) through rotating discs.

7. The rubber low-temperature kneading machine system of a variable-diameter segmented rotor according to claim 6, characterized in that: A plurality of receiving grooves are respectively formed on the two inclined surfaces of the pushing block (2326). A rotating roller (2329) for reducing contact friction is rotatably disposed inside each of the plurality of receiving grooves.

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