A rubber cryogenic kneader system of variable diameter segmented rotor

Abstract

The present application relates to rubber kneading technical field, and discloses a rubber low-temperature kneader system of variable-diameter segmented rotor, which comprises a base, a mixing chamber and two rotors rotatably installed in the mixing chamber, the interiors of the two rotors are provided with abutting and pushing pieces, a transmission unit is arranged on both sides of the mixing chamber, a pressurizing unit is arranged at the top end of the mixing chamber, and a cleaning piece is arranged in the mixing chamber, wherein the cleaning piece comprises a plurality of scrapers slidingly arranged in the mixing chamber, and adjacent two sliding blocks are connected through an arc-shaped plate.The rubber low-temperature kneader system of variable-diameter segmented rotor can effectively solve the problem that rubber adheres to the inner wall of the mixing chamber and gradually accumulates and solidifies to form a hard block under the action of mechanical shearing in the prior art, which not only increases the friction between the moving parts such as the rotor and the jacks, but also causes the cross-contamination problem between different batches of rubber materials due to the mixing of residual rubber into the next batch of rubber materials.

Description

Technical Field

[0001] The invention relates to the technical field of rubber kneading, in particular to a rubber low-temperature kneader system with a variable-diameter segmented rotor. Background Art

[0002] Low temperature kneader is a special mixing equipment, mainly used for processing high polymer materials such as rubber and plastic. Its design purpose is to achieve efficient mixing of materials under low temperature conditions through precise temperature control and mechanical action to prepare rubber compounds with specific properties.

[0003] The mixing chamber is an important component of the kneader. It provides a closed environment for the mixing process of rubber. The mixing chamber is usually composed of a rotor, upper and lower bolts, a casing and a discharge door. The shearing and stirring of the rubber are completed through the rotation of the rotor.

[0004] During the actual operation of the low-temperature kneader, due to the viscoelasticity of rubber, under the action of mechanical shear, some rubber will inevitably adhere to the inner wall of the mixing chamber. If the inner wall of the mixing chamber is not cleaned in time during operation, these adhered rubbers will gradually accumulate and solidify to form hard lumps. These hard lumps will not only increase the friction between the rotor, ejector bolts and other moving parts, but also the residual rubber will be mixed into the next batch of rubber, causing cross-contamination between different batches of rubber. Summary of the Invention

[0005] In response to the above-mentioned shortcomings of the prior art, the present invention provides a rubber low-temperature kneading mill system with a variable-diameter segmented rotor, which can effectively solve the problem in the prior art that, due to the viscoelasticity of rubber, a portion of the rubber will inevitably adhere to the inner wall of the mixing chamber under the action of mechanical shear. If the inner wall of the mixing chamber during operation is not cleaned in time, the adhered rubber will gradually accumulate and solidify to form hard lumps. These hard lumps will not only increase friction with moving parts such as the rotor and the top bolt, but the residual rubber will also be mixed into the next batch of rubber, causing cross-contamination between different batches of rubber.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a rubber low-temperature kneading mill system with a variable-diameter segmented rotor, comprising:

[0008] base;

[0009] The mixing mechanism includes a mixing chamber mounted on the upper surface of the base via two support plates, a mixing group disposed within the mixing chamber, and two annular rotors rotatably mounted within the mixing chamber. The arcuate outer walls of the rotors are provided with a plurality of first and second mounting slots along the circumferential direction, and a thrust member is disposed within the rotors.

[0010] There are two transmission units, one on each side of the mixing mechanism, and one end of each rotor is connected to one of the transmission units.

[0011] The pressurizing unit is set at the top of the mixing chamber, and the rubber is pressurized by the downward pressure of the pressurizing unit;

[0012] The inner wall of the mixing chamber is provided with two arc-shaped grooves distributed in a front-to-back symmetrical manner, and a cleaning member that can be used to scrape the inner wall of the mixing chamber is slidingly arranged inside the two arc-shaped grooves;

[0013] The cleaning element includes a plurality of scrapers which are always slidably arranged inside the arc groove through sliders, and two adjacent sliders are connected by an arc plate.

[0014] Furthermore, two blocking blocks are fixedly installed inside the arc groove in a front-to-back symmetrical manner, and the ends of the two blocking blocks that are away from each other are fixedly connected to the adjacent sliders through reset springs. The upper surfaces of the two sliders located at the top and staggered inside the two arc grooves are respectively fixedly connected with magnetic parts.

[0015] Furthermore, the second mounting slot is opened between the adjacent first mounting slot, and the mixing group also includes actuators corresponding to the positions of the first mounting slot and the second mounting slot. The actuator corresponding to the position of the first mounting slot includes three supporting plates distributed along the front-to-back direction and connected to the inner wall of the rotor through a number of telescopic guide rods. One end of the supporting plate close to the outer wall of the rotor is fixedly connected with a protrusion that can be used to shear the rubber.

[0016] Furthermore, the actuator corresponding to the second position of the mounting slot includes a support block slidably arranged inside the second mounting slot in a left-right symmetrical manner, and the two support blocks are fixedly connected by an axis rod with a W-shaped stirring roller that can be used to stir the rubber, and the lower end surfaces of the two support blocks are fixedly connected with an inverted T-shaped top plate that is connected to the inner wall of the rotor through a telescopic guide rod.

[0017] Furthermore, the push member includes a mounting sleeve arranged inside the rotor and having a sliding groove on its outer wall along the circumferential direction, a protrusion is fixedly provided at the rightmost end of the sliding groove, and two annular members connected by a linkage tube are slidingly provided on the outer wall of the mounting sleeve, and push blocks with chamfered left and right side walls are fixedly provided at the positions of the circumferential outer walls of the two annular members corresponding to the support plates, and the push blocks are respectively fitted with the corresponding support plates.

[0018] Further, the outer wall of the linkage pipe is provided with a guide groove corresponding to the number of the protrusions in the circumferential direction, the protrusions are always located inside the guide groove, the inside of the mounting sleeve is further provided with a circular disc connected with another transmission unit and slidingly arranged, the circumferential outer wall of the circular disc is fixedly provided with a support rod corresponding to the position of the sliding groove, and the plurality of support rods penetrate through the sliding groove and are rotationally connected with the inner wall of the annular piece through the rotating disc.

[0019] Further, a plurality of accommodating grooves are respectively arranged on the two inclined surfaces of the pushing block, and a rotating roller for reducing contact friction is rotationally arranged in each of the accommodating grooves.

[0020] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0021] The cleaning piece is arranged, and the lower end of the upper ejector rod is in contact with and magnetically fixed to the two magnetic pieces arranged in a staggered manner and protruding from the arc-shaped groove when the upper ejector rod moves downward. As the upper ejector rod continues to press down, the magnetic pieces enter the arc-shaped groove and drive the plurality of sliding blocks to slide along the arc-shaped groove through the arc-shaped plate. Since the scraper is fixedly connected to the sliding block and the two blades of the scraper are in close contact with the inner wall of the mixing chamber, when the upper ejector rod pushes the magnetic pieces, the plurality of scrapers will slide along the arc-shaped groove under the drive of the sliding blocks, and the blades will scrape off the residual rubber on the inner wall of the mixing chamber and push the rubber to assist the stirring work. The cleaning by the plurality of scrapers can not only effectively scrape off the rubber residues adhered thereto and prevent the formation of rubber hard blocks due to long-term lack of cleaning, but also avoid cross-contamination of different batches of rubber during the mixing process. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment of the present application;

[0024] Figure 2 is a schematic diagram of the three-dimensional structure of the mixing chamber and the rotor of the embodiment of the present application;

[0025] Figure 3 is a schematic diagram of the three-dimensional structure of the cleaning piece of the embodiment of the present application;

[0026] Figure 4 is a schematic diagram of the three-dimensional structure of the rotor and the pushing piece of the embodiment of the present application;

[0027] Figure 5 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0028] Figure 6 is a structure schematic diagram of the embodiment of the application Figure 5 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0029] Figure 7 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0030] Figure 8 is a structure schematic diagram of the embodiment of the application Figure 7 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0031] Figure 9 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0032] Figure 10 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0033] Figure 11 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions;

[0034] Figure 12 is a structure schematic diagram of the embodiment of the application Figure 11 is a structure schematic diagram of the embodiment of the application that the rotor and the protrusion are separated in three dimensions.

[0035] The labels in the figure respectively represent: 1, base; 2, mixing mechanism; 21, support plate; 22, mixing chamber; 221, cleaning piece; 2211, sliding block; 2212, scraper; 2213, arc plate; 2214, magnetic piece; 23, mixing group; 231, rotor; 232, pushing piece; 2321, mounting sleeve; 2322, sliding groove; 2323, protruding block; 2324, ring-shaped piece; 2325, linkage pipe; 2326, pushing block; 2327, circular disc; 2328, support rod; 2329, rotating roller; 233, bearing plate; 234, protrusion; 235, support block; 236, stirring roller; 237, top plate; 3, transmission unit; 4, pressurizing unit. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0037] The present invention will be further described below with reference to the embodiments.

[0038] Example:

[0039] See also Figures 1-12 The present invention provides a technical solution: a rubber low-temperature kneading mill system with a variable-diameter segmented rotor, comprising:

[0040] Base 1;

[0041] The mixing mechanism 2 includes a mixing chamber 22 mounted on the upper surface of the base 1 via two support plates 21. A mixing group 23 is provided inside the mixing chamber 22. The mixing group 23 includes two annular rotors 231 rotatably mounted inside the mixing chamber 22. The arcuate outer wall of the rotor 231 is provided with a plurality of first and second mounting slots along the circumferential direction. A push member 232 is provided inside the rotor 231.

[0042] Transmission units 3, two transmission units 3 are provided and are respectively arranged on the left and right sides of the mixing mechanism 2, and one end of the two rotors 231 is connected to any transmission unit 3;

[0043] The pressurizing unit 4 is arranged at the top of the mixing chamber 22, and applies pressure to the rubber by the downward pressure of the pressurizing unit 4;

[0044] The inner wall of the mixing chamber 22 is provided with two arc-shaped grooves distributed in a front-to-back symmetrical manner. A cleaning member 221 is slidingly provided inside the two arc-shaped grooves for scraping the inner wall of the mixing chamber 22.

[0045] The cleaning member 221 includes a plurality of scrapers 2212 that are always slidably arranged inside the arc groove through the slider 2211 , and two adjacent sliders 2211 are connected by an arc plate 2213 .

[0046] Two blocking blocks are fixedly installed inside the arc groove in a front-to-back symmetrical manner. The ends of the two blocking blocks that are away from each other are fixedly connected to the adjacent sliders 2211 through reset springs. The upper surfaces of the two sliders 2211 located at the top and staggered inside the two arc grooves are respectively fixedly connected with magnetic parts 2214.

[0047] The second mounting slot is opened between the adjacent first mounting slots. The mixing group 23 also includes actuators corresponding to the positions of the first mounting slot and the second mounting slot. The actuator corresponding to the position of the first mounting slot includes three supporting plates 233 distributed along the front-to-back direction and connected to the inner wall of the rotor 231 through a plurality of telescopic guide rods. The supporting plate 233 is fixedly connected to one end of the outer wall of the rotor 231 with a protrusion 234 that can be used to shear the rubber.

[0048] The actuator corresponding to the second position of the mounting slot includes a support block 235 that is slidably arranged inside the second mounting slot in a left-right symmetrical manner. The two support blocks 235 are fixedly connected by an axis rod with a W-shaped stirring roller 236 that can be used to stir the rubber. The lower end surfaces of the two support blocks 235 are fixedly connected with an inverted T-shaped top plate 237 that is connected to the inner wall of the rotor 231 through a telescopic guide rod.

[0049] The push member 232 includes a mounting sleeve 2321 which is arranged inside the rotor 231 and has a sliding groove 2322 on its outer wall along the circumferential direction. A protrusion 2323 is fixedly provided at the rightmost end of the sliding groove 2322. Two annular members 2324 connected by a linkage tube 2325 are slidingly provided on the outer wall of the mounting sleeve 2321. The circumferential outer walls of the two annular members 2324 are fixed with push blocks 2326 with chamfered left and right side walls at positions corresponding to the support plate 233. The push blocks 2326 are respectively fitted with the corresponding support plates 233.

[0050] The outer wall of the linkage tube 2325 is provided with guide grooves along the circumferential direction corresponding to the number of protrusions 2323, and the protrusions 2323 are always located inside the guide grooves. A circular disk 2327 connected to another transmission unit 3 is also slidably provided inside the mounting sleeve 2321. A support rod 2328 is fixedly provided on the circumferential outer wall of the circular disk 2327 at the position corresponding to the sliding groove 2322. Several support rods 2328 pass through the sliding groove 2322 and are rotatably connected to the inner wall of the annular member 2324 through the rotating disk.

[0051] A plurality of receiving grooves are respectively provided on the two inclined surfaces of the push block 2326, and a rotating roller 2329 is rotatably provided inside each of the receiving grooves to reduce contact friction.

[0052] During the specific work, rubber cutting and shearing work:

[0053] During the mixing process of rubber, first, a batch of raw rubber is fed along the feeding pipe (not shown in the drawings of the specification) (when the rubber is not initially mixed, the pressurizing unit 4 is in the preparation stage and has not yet been pressed down. The purpose is to avoid blocking the feeding of the raw rubber. At the same time, when the pressurizing unit 4 is not pressed down, the area inside the mixing chamber 22 is also larger, so it can accommodate more raw rubber). Then, when a batch of raw rubber is fed, the temperature control unit (not shown in the drawings of the specification) provided on the mixing chamber 22 is controlled to work and control the temperature inside the mixing chamber 22 to ensure that the temperature inside the mixing chamber 22 is maintained within the range of zero to room temperature. At the same time, the cylinder in the pressurizing unit 4 is controlled to drive the upper push rod into the mixing chamber 22, and apply pressure to the rubber inside the mixing chamber 22 through the upper push rod.

[0054] Subsequently, the transmission unit 3 connected to the two rotors 231 on one side drives the two rotors 231 to rotate synchronously in meshing, and the shearing work of the rubber in the mixing chamber 22 is completed by the ridges 234 arranged along the circumferential direction on the two rotors 231 (the ridges 234 located inside the mounting groove 1 are divided into two different shapes, namely, one ridge 234 is conical and has a serrated groove on its conical outer wall, and the other ridge 234 is cylindrical and its outer wall is arranged as an arc-shaped smooth section. When the two annular members 2324 are in the initial position, the push blocks 2326 arranged on their outer walls along the circumferential direction respectively fit with the corresponding support plates 233. The push of the push blocks 2326 causes several support plates 233 to move away synchronously and drive the conical ridges 234 connected thereto to extend. As the two rotors 231 continue to rotate, the shearing work of the rubber is completed by the conical ridges 234 with serrated grooves on their outer walls).

[0055] It should be noted that the two rotors 231 are respectively provided with a relative number of conical ridges 234 and cylindrical ridges 234. During the rotation of the rotor 231, these ridges 234 engage with each other to achieve shearing of the rubber in the mixing chamber 22. The conical ridges 234 are provided with serrated grooves, and their sharp edges significantly increase the contact area between the rotor 231 and the rubber, thereby enhancing the mechanical bite force between the two. During the rotation of the rotor 231, the sharp edges of the serrated grooves will exert high-intensity shear force on 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 grooves further increases the friction between the ridges 234 and the rubber, effectively preventing the rubber from slipping during processing. Through the design of the serrated grooves, the rubber can always fit closely to the surface of the rotor 231, avoiding the problem of reduced processing efficiency due to insufficient friction, which not only improves the efficiency of rubber processing but also ensures the processing quality.

[0056] When the two rotors 231 are shearing the rubber inside the mixing chamber 22, the pressurizing unit 4 drives the upper push rod to move back and forth up and down through the cylinder, and realizes the extrusion of the rubber during the shearing process through the upper push rod. During this process, the upper push rod moves downward, and its lower end will preferentially contact and be magnetically fixed with two magnetic parts 2214 arranged in a staggered manner and protruding from the arc groove. As the upper push rod continues to press down, the magnetic part 2214 enters the arc groove and synchronously drives several sliders 2211 to slide along the arc groove through the arc plate 2213. Since the scraper 2212 is fixedly connected to the slider 2211 and the two blades of the scraper 2212 are in close contact with the inner wall of the mixing chamber 22, when the upper push rod pushes the magnetic part 2214, the several scrapers 2212 will synchronously slide along the arc groove under the drive of the slider 2211, and realize the scraping of the residual rubber on the inner wall of the mixing chamber 22 through the blade (in the rubber mixing process, the residual rubber material may adhere to the mixing The inner wall of the mixing chamber 22, these residues may gradually solidify and form hard lumps under the action of high temperature and continuous shear force. These lumps will not only affect the efficiency of the mixing process, but also cause additional wear on the rotor 231 and the inner wall of the mixing chamber 22, shortening the service life of the equipment. The several scrapers 2212 arranged in the mixing chamber 22 are synchronously driven by the up and down reciprocating movement of the upper push rod to rotate back and forth along the inner wall of the mixing chamber 22. Since the two blades of the scraper 2212 are in close contact with the inner wall of the mixing chamber 22, they can effectively scrape off the rubber residues adhering thereto, and prevent the formation of rubber lumps due to long-term non-cleaning. In addition, the coordinated reciprocating scraping action of the several scrapers 2212 can also avoid cross-contamination of different batches of rubber during the mixing process. The cooperation between the pressurizing unit 4 and the several scrapers 2212 not only ensures the cleanliness and efficiency of the mixing process, but also improves the quality of the mixed rubber).

[0057] Switching of the ridges 234 and stirring of the rubber:

[0058] When the two rotors 231 rotate synchronously, 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 by a plurality of support rods 2328 arranged on its outer wall in the circumferential direction. In the initial state, the two push blocks 2326 are respectively fitted with the left and right supporting plates 233 (three ridges 234 are arranged inside the mounting groove 1, wherein two conical ridges 234 are provided and are respectively located on the left and right sides of the cylindrical ridge 234, and the three ridges 234 are close to the end of the ring member 2324. The support plate 233 is provided), and the push of the push blocks 2326 makes the telescopic guide rods provided on the left and right supporting plates 233 be in a compressed state, and as the two push blocks 2326 are driven by the ring member 2324 The left and right supporting plates 233 are always in close contact with the push block 2326 under the action of the rebound 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 gradually decreases when they are in contact with the push block 2326 (at different stages of rubber mixing, the requirements for shear force and mixing effect are different, so the extension length of the ridge 234 needs to be adjusted according to the specific working conditions. At the initial stage of mixing, the raw rubber is still granular or blocky, and a larger shear force is required to break the rubber blocks and preliminarily mix the compounding agents. At this time, the extension 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 caused by excessive shearing, the extension length of the ridge 234 is appropriately reduced by pushing the push block 2326 to balance the shear force and mixing uniformity).

[0059] The two push blocks 2326 are continuously pushed by the circular disk 2327 and the support rod 2328 and gradually separate from the left and right support plates 233. During the process, the left push block 2326 gradually contacts the middle support plate 233 and gradually pushes the middle support plate 233 during the contact process, causing the cylindrical protrusion 234 to extend and gradually become higher than the conical protrusion 234. (During the movement of the left push block 2326, the chamfered design on its outer wall and the several rotating rollers 2329 provided on the inclined surface of the push block 2326 work together to reduce the friction when the middle support plate 233 and the push block 2326 contact. Specifically, the chamfered design can guide the push block 2326 to contact the middle support plate 233 smoothly, while the rotating roller 2329 converts the sliding friction into rolling friction through its free rotation, significantly reducing the friction coefficient. This design effectively improves the smoothness of the switching between the left support plate 233 and the middle support plate 233 and reduces the resistance during the switching process. The cylindrical ridges 234 are designed to further mix the rubber compared to the conical ridges 234 with serrated grooves. The smooth curved surface of the cylindrical ridges 234 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. The switching mechanism of the ridges 234 shape allows the mixing process to flexibly adjust the shear force as needed, thereby achieving more refined processing control of the rubber material. In the initial stage where 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. In the subsequent stage where gentle mixing is required to avoid excessive shearing, the cylindrical ridges 234 can provide a softer treatment, thereby ensuring the quality of the final product.

[0060] It should be noted that, when the two annular members 2324 are pushed by the circular disk 2327 , the linkage tube 2325 also moves synchronously, and causes the protrusion 2323 to slide inside the guide groove.

[0061] After the rubber is stirred for a period of time by the cylindrical protrusions 234, in order to improve the plasticity and flowability of the rubber, the transmission set 3 is continued to be controlled to push the circular disc 2327 to slide along the mounting sleeve 2321, the ring-shaped part 2324 and the linkage pipe 2325 continue to move under the pushing of the circular disc 2327, and the ring-shaped part 2324 and the abutting block 2326 rotate during the movement of the linkage pipe 2325 through the guide groove provided on the outer wall of the linkage pipe 2325 (the guide groove is composed of two symmetrically arranged J-shaped through grooves, and since the protrusion 2323 is fixedly arranged on the outer wall of the mounting sleeve 2321, when the linkage pipe 2325 is pushed, the linkage pipe 2325 and the two ring-shaped parts 2324 change angles through the cooperation of the protrusion 2323 and the guide groove), the ring-shaped part 2324 rotates synchronously to drive the abutting block 2326 arranged thereon to rotate, the abutting block 2326 is preferentially separated from the middle supporting plate 233 during the rotation, the cylindrical protrusions 234 retract under the resilience reset of the respective supporting plates 233 and the telescopic guide rods, and the abutting block 2326 abuts against the top plate 237 after the rotation, and the supporting block 235 protrudes from the rotor 231 under the movement of the stirring roller 236 on the top plate 237, thereby completing the switching work of the cylindrical protrusions 234 and the W-shaped stirring roller 236 (in the later plasticizing stage of the rubber, the rubber has been basically mixed uniformly, 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, and significantly improve the mixing uniformity), and after stirring for a period of time, the discharging work of the rubber after mixing is completed is completed through the opening of the lower top rod (not shown in the drawings).

[0062] In the rubber mixing process, the design of switching different types of protrusions 234 in stages can significantly improve the mixing efficiency, rubber uniformity and equipment performance. Specifically, the initial stage adopts the conical sawtooth protrusion 234, which generates high-strength shear force to effectively promote the crushing of rubber particles and the preliminary dispersion of the compounding agent, laying a foundation for subsequent mixing, the middle stage switches to the cylindrical protrusion 234, which provides a gentle stirring effect with its smooth arc surface, ensuring uniform distribution of the compounding agent in the rubber and avoiding local agglomeration, and the final stage adopts the W-shaped stirring roller 236, which optimizes the rubber flow path with its complex geometric shape, further improves the mixing uniformity and avoids local agglomeration of the rubber through forced cutting and overturning movement, and ensures the consistency of the rubber performance.

[0063] It is worth emphasizing that the rubber low-temperature kneading machine system based on the variable-diameter segmented rotor mainly has the following advantages:

[0064] Advantage 1: When the upper push rod moves downward, its lower end will preferentially contact and be magnetically fixed with two magnetic parts 2214 arranged in a staggered manner and protruding from the arc groove. As the upper push rod continues to be pressed downward, the magnetic part 2214 enters the arc groove and synchronously drives several sliders 2211 to slide along the arc groove through the arc plate 2213. Since the scraper 2212 is fixedly connected to the slider 2211 and the two blades of the scraper 2212 are in close contact with the inner wall of the mixing chamber 22, when the upper push rod pushes the magnetic part 2214, the several scrapers 2212 will synchronously slide along the arc groove under the drive of the slider 2211, and use the blades to scrape off the residual rubber on the inner wall of the mixing chamber 22, push the rubber and assist in the stirring work, which can not only effectively scrape off the rubber residue adhering to it, prevent the rubber lumps formed due to long-term cleaning, but also avoid cross-contamination of different batches of rubber during the mixing process.

[0065] Advantage 2: A serrated groove is provided on the conical ridge 234, and its sharp edge significantly increases the contact area between the rotor 231 and the rubber, thereby enhancing the mechanical bite force between the two. During the rotation of the rotor 231, the sharp edge of the serrated groove will exert a high-intensity shear force on the rubber. This shear force can effectively break the rubber molecular chain and promote its redistribution, thereby optimizing the internal structure of the rubber. At the same time, the groove design of the serrated groove further increases the friction between the ridge 234 and the rubber, effectively preventing the rubber from slipping during the processing. Through the design of the serrated groove, the rubber can always fit closely to the surface of the rotor 231, avoiding the problem of reduced processing efficiency due to insufficient friction, which not only improves the efficiency of rubber processing, but also ensures the processing quality.

[0066] Advantage three: during the movement of the left-side push block 2326, the chamfered design on its outer wall and the several rotating rollers 2329 set on the inclined surface of the push block 2326 work together to reduce the friction when the middle support plate 233 contacts the push block 2326. Specifically, the chamfered design can guide the push block 2326 to contact the middle support plate 233 smoothly, and the rotating rollers 2329 convert sliding friction into rolling friction through their free rotation, which significantly reduces the friction coefficient. This design effectively improves the smoothness of switching between the left-side support plate 233 and the middle support plate 233, reduces the resistance during the switching process, and makes the movement of the support plate 233 smoother.

[0067] Advantage four: 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, the conical serrated ridges 234 are used in the initial stage. The high-intensity shear force generated by them effectively promotes the crushing of rubber particles and the initial dispersion of the compounding agent, laying the foundation for subsequent mixing. In the middle stage, they are switched to cylindrical ridges 234. Their smooth curved surface provides a gentle stirring effect, ensuring that the compounding agent is evenly distributed in the rubber and avoiding local agglomeration. In the final stage, a W-shaped stirring roller 236 is used. Its complex geometric shape optimizes the rubber flow path. Through forced cutting and flipping movements, it further improves the mixing uniformity and avoids local agglomeration of rubber, ensuring the consistency of rubber performance.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 various embodiments of the present invention.

Claims

1. A rubber low-temperature kneading mill system with a variable diameter segmented rotor, characterized in that: include: Base (1); A mixing mechanism (2), the mixing mechanism (2) comprising a mixing chamber (22) mounted on the upper surface of a base (1) via two support plates (21), a mixing group (23) being provided inside the mixing chamber (22), the mixing group (23) comprising two rotors (231) in a ring shape and rotatably mounted inside the mixing chamber (22), a plurality of first and second mounting slots being provided on the arc-shaped outer wall of the rotor (231) along the circumferential direction, and a push member (232) being provided inside the rotor (231); A transmission unit (3), wherein two transmission units (3) are provided and are respectively arranged on the left and right sides of the mixing mechanism (2), and one end of the two rotors (231) is connected to any transmission unit (3); A pressurizing unit (4), the pressurizing unit (4) being arranged at the top of the mixing chamber (22), and applying pressure to the rubber by downward pressure of the pressurizing unit (4); The inner wall of the mixing chamber (22) is provided with two arc-shaped grooves distributed in a front-to-back symmetrical manner, and a cleaning member (221) is provided inside the two arc-shaped grooves for sliding together and can be used to scrape the inner wall of the mixing chamber (22); The cleaning member (221) comprises a plurality of scrapers (2212) which are always slidably arranged inside the arc groove via sliders (2211), and two adjacent sliders (2211) are connected via an arc plate (2213); The second installation slot is provided between the adjacent first installation slots, the mixing group (23) further comprising actuators corresponding to the first installation slot and the second installation slot, the actuator corresponding to the first installation slot comprising three supporting plates (233) distributed in the front-to-back direction and connected to the inner wall of the rotor (231) via a plurality of telescopic guide rods, and a protruding ridge (234) for shearing the rubber is fixedly connected to one end of the supporting plate (233) close to the outer wall of the rotor (231); The actuator corresponding to the second installation slot position includes a support block (235) slidably arranged inside the second installation slot in a bilaterally symmetrical manner, and a W-shaped stirring roller (236) for stirring the rubber is fixedly connected between the two support blocks (235) via a shaft, and the lower end surfaces of the two support blocks (235) are fixedly connected to an inverted T-shaped top plate (237) connected to the inner wall of the rotor (231) via a telescopic guide rod. The push member (232) includes a mounting sleeve (2321) arranged inside the rotor (231) and having a sliding groove (2322) provided on its outer wall along the circumferential direction. A protrusion (2323) is fixedly provided at the rightmost end of the sliding groove (2322). Two annular members (2324) connected by a linkage tube (2325) are slidingly provided on the outer wall of the mounting sleeve (2321). Push blocks (2326) with chamfered left and right side walls are fixedly provided at positions corresponding to the support plate (233) on the circumferential outer walls of the two annular members (2324). The push blocks (2326) are respectively fitted with the corresponding support plates (233).

2. The rubber low-temperature kneading mill system with a variable diameter segmented rotor according to claim 1, characterized in that: The outer wall of the linkage tube (2325) is provided with guide grooves corresponding to the number of protrusions (2323) in the circumferential direction, and the protrusions (2323) are always located inside the guide grooves. A circular disk (2327) connected to another transmission unit (3) is also slidably provided inside the mounting sleeve (2321), and a support rod (2328) is fixedly provided on the circumferential outer wall of the circular disk (2327) at a position corresponding to the sliding groove (2322). Several of the support rods (2328) pass through the sliding groove (2322) and are rotatably connected to the inner wall of the annular member (2324) through a rotating disk.

3. The rubber low-temperature kneading mill system with a variable diameter segmented rotor according to claim 1, characterized in that: A plurality of receiving grooves are respectively provided on the two inclined surfaces of the push block (2326), and a rotating roller (2329) for reducing contact friction is rotatably provided inside the plurality of receiving grooves.

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