Rubber internal mixer for rubber tire production

Abstract

The invention provides a rubber internal mixer for rubber tire production, and relates to the technical field of rubber production equipment. A horizontal internal mixing chamber is arranged in the rack, and a control box for integrated control is hung on the inner side wall of the rack below the internal mixing chamber; the internal mixing chamber is of a fan-column-shaped structure, two mutually meshed rotors are arranged in the internal mixing chamber, and screw flights in special shapes are arranged on the surfaces of the rotors. The design of the butt-joint material port of the discharging cylinder is very exquisite, and the internal mixing chamber can be easily switched from a closed material state to a discharging state only by turning over by 180 degrees. By means of the design, operation is convenient and fast, the problems of rubber material leakage and the like cannot occur in the switching process, the cleanliness of the production environment is ensured, material waste is reduced, and a powerful guarantee is provided for continuous production. Compared with a discharging mode of a traditional internal mixer, complex manual operation or additional sealing device adjustment is avoided, and the discharging preparation time is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber production equipment, and particularly to a rubber internal mixer for rubber tire production. Background Art

[0002] In the field of rubber tire production, the rubber internal mixer is a crucial core equipment, and its performance directly affects the quality of rubber mixing and production efficiency, and thus has a decisive impact on the final quality of rubber tires. Traditional rubber internal mixers have significant defects in multiple key links and are difficult to meet the stringent requirements of modern high-efficiency and precise production.

[0003] In the discharging link, traditional internal mixers generally adopt a simple discharging port design, often relying only on valves or baffles to control discharging. This design makes the discharging operation extremely cumbersome and complex. Before and after each discharging, operators need to manually open or close the valves and install or remove the baffles, consuming a large amount of time and labor costs, and seriously hindering the continuity of production. Moreover, due to the imperfect sealing design, rubber leakage frequently occurs during discharging. The leaked rubber not only pollutes the production environment, increases the cleaning difficulty and cost, but also causes waste of materials and increases the production cost. At the same time, the rubber is prone to clogging due to accumulation and extrusion at the discharging port. Traditional internal mixers lack an effective dredging mechanism. Once clogging occurs, the machine must be stopped for manual cleaning, which further reduces the production efficiency and cannot meet the fast-paced requirements of large-scale production.

[0004] In terms of rubber cutting, the traditional method mainly relies on manual operation with a knife. The accuracy of manual cutting completely depends on the experience and skill level of the operator, and it is difficult to ensure that the length of the cut rubber is the same each time. In large-scale production, this inconsistency will cause many problems in subsequent tire processing procedures, such as product size deviation, weight unevenness, etc., seriously affecting the stability of product quality. Summary of the Invention

[0005] The present invention relates to a rubber internal mixer for rubber tire production, which can effectively solve many problems existing in the discharging, cutting and material receiving links of traditional internal mixers, and significantly improve the efficiency and quality of rubber tire production.

[0006] The present invention provides a rubber internal mixer for rubber tire production, specifically including: a frame; a horizontal internal mixing chamber is provided in the frame, and a control box for integrated control is also hung on the inner side wall of the frame below the internal mixing chamber; the internal mixing chamber is of a fan-shaped columnar structure, and two meshing rotors are arranged in the internal mixing chamber. The surface of the rotor is provided with special-shaped screw edges, and the screw edges are designed with variable angles. From one end of the rotor to the other end, the angle between the screw edge and the rotor axis gradually increases; a permanent magnet synchronous motor rotationally connected to one end of one of the rotors is provided on the side wall at one end of the frame; a feeding component is also provided in the internal mixing chamber outside the rotor connected to the permanent magnet synchronous motor; the lower end of the internal mixing chamber is a discharge cylinder for discharging rubber. The discharge cylinder is rotatably installed at both ends of the frame along the bottom of the internal mixing chamber, and a discharge motor corresponding to driving the discharge cylinder is also provided on the frame. The other end of the discharge cylinder passes through the frame as an open discharge end, and a rubber cutting mechanism capable of cutting the rubber according to the discharge amount and a receiving mechanism for automatic unloading are also provided on the frame at the open discharge end; an opening and closing component for controlling the flipping of the discharge cylinder is also provided on the frame at the end where the discharge motor is located.

[0007] Optionally, a sealing door is provided at the upper end of the internal mixing chamber. At the position corresponding to the sealing door at the bottom of the inner cavity of the internal mixing chamber, two V-shaped feeding clamping plates are provided. The lower ends of the two feeding clamping plates correspond to the meshing position of the two rotors. Heating wires are respectively provided in the two feeding clamping plates. A plurality of temperature sensors for real-time monitoring of the temperature of the rubber in the internal mixing chamber are also distributed in the internal mixing chamber below the feeding clamping plates.

[0008] Optionally, the feeding component is composed of two parallel feeding shafts and a directional guide rod. A feeding sleeve seat is slidably sleeved between the feeding shaft and the directional guide rod. A feeding screw channel for the reciprocating movement of the feeding sleeve seat is also provided on the feeding shaft. A feeding motor for driving the feeding shaft is also provided on the outer side wall of the frame. The feeding motor is a reciprocating motor. Feeding rods are provided on the feeding sleeve seat and are distributed around the bottom of the inner cavity of the internal mixing chamber. When the feeding rods pass through the discharge cylinder, they bend upward and pass through the cylinder wall of the discharge cylinder. The feeding shaft rotates reciprocally, and the feeding rods are driven by the feeding sleeve seat to reciprocally stir the rubber at the bottom of the inner cavity of the internal mixing chamber.

[0009] Optionally, a part of the discharge cylinder protrudes above the internal mixing chamber. A docking port for guiding the discharge of the rubber in the inner cavity of the internal mixing chamber is opened at the part of the discharge cylinder corresponding to the internal mixing chamber. When the docking port faces the inner cavity of the internal mixing chamber, the two port edges of the docking port fit and dock with the inner cavity of the internal mixing chamber. When the docking port is flipped 180 degrees downward, the discharge cylinder closes the discharge of the internal mixing chamber. A semi-circular discharge pressing tongue is provided on the inner side wall of the inner cavity of the internal mixing chamber corresponding to the open discharge end of the discharge cylinder. The outer wall of the discharge cylinder is tangent to the discharge pressing tongue. The discharge pressing tongue is used to press and guide the rubber to be smoothly discharged when the discharge cylinder discharges.

[0010] Optionally, a spiral blade is rotatably installed in the inner cavity of the discharge cylinder. The rotating shaft of the spiral blade is fixedly connected to the rotating shaft of the discharge motor through a coupling. The spiral blade is designed with variable pitch. The pitch is smaller at the end close to the discharge motor and gradually increases at the end far from the discharge motor. A ring gear is annularly arranged at one end of the discharge cylinder close to the discharge motor, and the ring gear is opposite to the opening and closing assembly in position.

[0011] Optionally, the opening and closing assembly is composed of an opening and closing cylinder, a driving tooth block, a trigger switch and a pressing wheel. The end of the piston rod of the opening and closing cylinder is fixedly connected with an L-shaped driving tooth block. The lower end of the driving tooth block is a tooth for meshing with the ring gear. A pressing wheel is arranged at the top of the driving tooth block in a mutually abutting manner. The pressing wheel is rotatably installed on the frame. A trigger switch opposite to the pressing wheel is arranged on the end block of the driving tooth block close to the opening and closing cylinder. When the piston rod of the opening and closing cylinder is pushed out, the driving tooth block drives the discharge cylinder to rotate 180 degrees, changing from the closed material state to the discharging state. The trigger switch abuts against the pressing wheel to connect the control circuit of the discharge motor, and the discharge motor works, and the spiral blade rotates to discharge materials.

[0012] Optionally, the cutting mechanism includes a cutting knife horizontally arranged along the edge of the discharge cylinder opening at the end of the piston rod of the cutting cylinder. The cutting edge of the cutting knife faces the edge of the discharge cylinder opening. An outwardly turned guiding lower fin is arranged at the lower part of the outer side wall of the cutting knife to send the cut rubber material outwards. The cutting knife is sleeved with a knife sleeve, and the knife sleeve is fixed on the outer wall of the frame to provide guidance for the cutting knife. A connecting pin is vertically arranged outwards at the root of the end of the cutting knife close to the cutting cylinder.

[0013] Optionally, the material receiving mechanism includes a material receiving tray, a support plate, a cooling fan, a connecting arm, a connecting pin hole and a weighing scale. The material receiving tray is of an L-shaped structure. The end of the horizontal section of the material receiving tray is rotatably installed on the frame through a hinge shaft. A support plate for supporting the material receiving tray to keep it horizontal is vertically arranged on the frame below the material receiving tray. A cooling fan for quickly cooling the rubber material is embedded in the vertical section of the material receiving tray. A connecting arm is rotatably connected to the upper edge of the material receiving tray through a hinge shaft. An oval-shaped connecting pin hole is opened through the other end of the connecting arm. The connecting pin slides in the connecting pin hole. A weighing scale for weighing the amount of the rubber material is arranged on the top plane of the horizontal section of the material receiving tray. The weighing scale is interlocked with the cutting mechanism. After the weighing scale weighs up to the set value, the cutting mechanism works, and the cutting knife moves towards the discharge cylinder. The connecting pin first makes an idle stroke movement in the connecting pin hole. After the cutting knife completely cuts off the rubber material at the outlet of the discharge cylinder, the connecting pin abuts against the lowermost end of the connecting pin hole, and the cutting knife continues to move, pushing the material receiving tray to turn up through the connecting arm, and the rubber material on the material receiving tray is unloaded.

[0014] The present invention provides a rubber internal mixer for rubber tire production, which has the following beneficial effects: 1. In the present invention, the docking material inlet of the discharge barrel is exquisitely designed. It only needs to be flipped 180 degrees to easily switch the mixing chamber from the closed material state to the discharge state. This design is not only convenient to operate, but also does not cause problems such as rubber leakage during the switching process, ensuring a clean production environment, reducing material waste, and providing a strong guarantee for continuous production. Compared with the traditional discharge method of internal mixers, it avoids complex manual operations or adjustments of additional sealing devices, greatly shortening the discharge preparation time.

[0015] 2. The spiral blade in the discharge barrel of the present invention adopts a unique variable pitch design. The pitch is smaller at the end close to the discharge motor and gradually increases at the end far from the discharge motor. This design can exert a continuous and changing thrust on the rubber compound, gradually loosen the rubber compound in the discharge barrel, and effectively prevent the rubber compound from being blocked due to excessive extrusion during the discharge process. At the same time, a semi-circular discharge pressing tongue is provided on the inner side wall of the inner cavity of the mixing chamber corresponding to the discharge end of the opening of the discharge barrel, which works in cooperation with the spiral blade. During discharge, the discharge pressing tongue plays a role in pressing and guiding the rubber compound, guiding the rubber compound to be discharged smoothly along a specific direction, further improving the discharge smoothness. This innovative design significantly improves the discharge efficiency compared with traditional internal mixers, greatly reducing the production time cost and meeting the requirements of large-scale production for efficient discharge.

[0016] 3. The cutting cylinder of the cutting mechanism in the present invention can accurately control the movement of the cutting knife. When it is necessary to cut the rubber compound, the piston rod of the cutting cylinder quickly extends, pushing the cutting knife to move horizontally along the edge of the discharge barrel opening. The cutting edge of the cutting knife is carefully designed, sharp and durable, and can quickly and accurately cut the rubber compound at the outlet of the discharge barrel. The guide material lower fin at the lower part of the outer side wall of the outer end of the cutting knife is ingeniously designed. At the moment of cutting the rubber compound, it can guide the cut rubber compound outwards, making it fall smoothly into the receiving tray along a predetermined trajectory, avoiding the scattering of the rubber compound and ensuring the orderly progress of the production process. Compared with the traditional manual cutting method, the automatic cutting function not only improves the cutting accuracy and speed, but also reduces the errors and safety risks brought by manual operations.

[0017] 4. In the present invention, the weighing scale on the material receiving tray and the cutting mechanism achieve a highly intelligent interlock. The weighing scale can accurately weigh the weight of the rubber material falling into the material receiving tray in real time. When the weighing value reaches the preset value, the system will immediately trigger the cutting mechanism to work. The cutter quickly moves to cut the rubber material, and the whole process is sensitive and accurate. At the same time, the design of the material receiving tray also fully considers the need for quantitative material receiving. The cooperation of the connecting arm and the connecting pin hole enables the material receiving tray to be automatically turned up for discharging after the cutter cuts the rubber material. After the discharging is completed, the material receiving tray automatically falls back to the support plate under the action of gravity and returns to the horizontal state to prepare to receive the rubber material cut next time. The advantage of this quantitative material receiving system is that it avoids the cumbersome operation of cutting and dividing the rubber material again in the subsequent production process. In traditional production, the material dividing process often requires manual participation, which is not only inefficient but also prone to uneven material division, affecting product quality. The quantitative material receiving system of the present invention realizes automatic and precise material division, optimizes the entire production process, improves work efficiency, and at the same time ensures the consistency of the material used in each batch of products, providing strong support for improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings: Figure 1 shows the first axonometric structural schematic diagram of the present invention; Figure 2 shows the Figure 1 enlarged partial structure schematic diagram of A in the present invention; Figure 3 shows the second axonometric structural schematic diagram of the present invention; Figure 4 shows the third axonometric structural schematic diagram of the present invention; Figure 5 shows the axonometric structural schematic diagram of the present invention in the open state of the sealing door; Figure 6 shows the axonometric structural schematic diagram of the present invention in the state where the top shell of the mixing chamber is removed; Figure 7 shows the axonometric structural schematic diagram of the present invention in the state where part of the shell of the mixing chamber is removed; Figure 8 shows the structural schematic diagram of the present invention in the state where the discharge barrel is turned to the discharge state; Figure 9The schematic structural diagram of the cutting mechanism and the material receiving mechanism of the present invention in the state of cutting and discharging materials is shown.

[0021] List of reference numerals 1. Frame 2. Kneading chamber; 201. Sealing door; 202. Feed clamping plate; 203. Discharge tongue 3. Permanent magnet synchronous motor 4. Rotor 5. Feeding motor; 501. Feeding shaft; 502. Feeding spiral channel; 503. Directional guide rod; 504. Feeding sleeve seat; 505. Feeding rod 6. Discharge motor 7. Discharge cylinder; 701. Ring gear; 702. Spiral blade; 703. Docking material receiving port 8. Opening and closing cylinder; 801. Driving tooth block; 8011. Trigger switch; 802. Pressing wheel 9. Control box 10. Cutting cylinder; 1001. Cutting knife; 1002. Lower guiding fin for material; 1003. Connecting pin; 1004. Knife sleeve 11. Material receiving tray; 1101. Support plate; 1102. Cooling fan; 1103. Connecting arm; 11031. Connecting pin hole; 1104. Weighing scale Specific embodiments

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of 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 described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] Embodiment 1: Please refer to Figures 1 to 9 : The present invention provides a rubber internal mixer for rubber tire production, comprising: a frame 1; a horizontal internal mixing chamber 2 is provided in the frame 1, and a control box 9 for integrated control is also hung on the inner side wall of the frame 1 below the internal mixing chamber 2; the internal mixing chamber 2 is of a fan-shaped columnar structure, and two meshing rotors 4 are arranged in the internal mixing chamber 2. The surface of the rotor 4 is provided with screw edges of a special shape, and the screw edges adopt a variable angle design. From one end to the other end of the rotor 4, the angle between the screw edge and the axis of the rotor 4 gradually increases, so that the rubber compound continuously tumbles and mixes in the internal mixing chamber 2, promoting the uniform dispersion of the compounding agent in the rubber, and enabling the rubber compound to be subjected to continuously changing shear force and extrusion force during the mixing process, thereby achieving more uniform mixing; on one side wall of the frame 1, a permanent magnet synchronous motor 3 is provided which is rotationally connected to one end of one of the rotors 4; a feeding component is further provided in the internal mixing chamber 2 outside the rotor 4 connected to the permanent magnet synchronous motor 3; the lower end of the internal mixing chamber 2 is a discharge cylinder 7 for discharging rubber. The discharge cylinder 7 is rotatably installed at both ends of the frame 1 along the bottom of the internal mixing chamber 2, and a discharge motor 6 corresponding to driving the discharge cylinder 7 is also provided on the frame 1. The other end of the discharge cylinder 7 passes through the frame 1 to be an open discharge end, and a rubber cutting mechanism capable of cutting according to the discharge amount of the rubber and a receiving mechanism for automatic discharging are also provided on the frame 1 at the open discharge end; an opening and closing component for controlling the flipping of the discharge cylinder 7 is also provided on the frame 1 at the end where the discharge motor 6 is located.

[0024] Wherein, a sealing door 201 is provided at the upper end of the internal mixing chamber 2, and two V-shaped feeding clamping plates 202 are provided at the position corresponding to the sealing door 201 at the bottom of the inner cavity of the internal mixing chamber 2. The lower ends of the two feeding clamping plates 202 correspond to the meshing position of the two rotors 4. Heating wires are respectively provided in the two feeding clamping plates 202, and a plurality of temperature sensors for real-time monitoring of the temperature of the rubber compound in the internal mixing chamber 2 are also distributed in the internal mixing chamber 2 below the feeding clamping plates 202 to ensure that the temperature of the rubber compound always remains within the set range.

[0025] Wherein, the feeding component is composed of two parallel feeding shafts 501 and a directional guide rod 503. A feeding sleeve seat 504 is slidably sleeved between the feeding shaft 501 and the directional guide rod 503. A feeding screw channel 502 for reciprocating movement of the feeding sleeve seat 504 is also provided on the feeding shaft 501. A feeding motor 5 for driving the feeding shaft 501 is also provided on the outer side wall of the frame 1. The feeding motor 5 is a reciprocating motor. Feeding rods 505 are provided on the feeding sleeve seat 504 and are distributed in a surrounding manner along the bottom of the inner cavity of the internal mixing chamber 2. When the feeding rods 505 pass through the discharge cylinder 7, they are bent upward and pass through the wall of the discharge cylinder 7. The feeding shaft 501 rotates reciprocally, and drives the feeding rods 505 to reciprocally stir the rubber compound at the bottom of the inner cavity of the internal mixing chamber 2 through the feeding sleeve seat 504, further promoting the mixing of the rubber compound and ensuring the uniform dispersion of the compounding agent in the rubber.

[0026] Among them, a part of the discharge cylinder 7 protrudes upward in the internal mixer 2. A docking material port 703 for guiding the discharge of the rubber material in the inner cavity of the internal mixer 2 is provided in the part of the discharge cylinder 7 corresponding to the internal mixer 2. When the docking material port 703 faces the inner cavity of the internal mixer 2, the two port edges of the docking material port 703 are fitted and docked with the inner cavity of the internal mixer 2. When the docking material port 703 is turned 180 degrees downward, the discharge cylinder 7 closes the discharge of the internal mixer 2. A semi-circular discharge pressing tongue 203 is provided on the inner side wall of the inner cavity of the internal mixer 2 corresponding to the opening discharge end of the discharge cylinder 7. The outer wall of the discharge cylinder 7 is tangent to the discharge pressing tongue 203. The discharge pressing tongue 203 is used to press and guide the rubber material to be discharged smoothly when the discharge cylinder 7 discharges materials.

[0027] Among them, a spiral blade 702 is rotatably installed in the inner cavity of the discharge cylinder 7. The rotating shaft of the spiral blade 702 is fixedly connected with the rotating shaft of the discharge motor 6 through a coupling. The spiral blade 702 adopts a variable pitch design. The pitch near the end of the discharge motor 6 is smaller, and the pitch gradually increases at the end far from the discharge motor 6 to ensure that the rubber material is gradually loosened and pushed out. A ring gear 701 is annularly provided at one end of the discharge cylinder 7 close to the discharge motor 6. The ring gear 701 is opposite to the position of the opening and closing assembly.

[0028] Among them, the opening and closing assembly is composed of an opening and closing cylinder 8, a driving tooth block 801, a trigger switch 8011 and a pressing wheel 802. The end of the piston rod of the opening and closing cylinder 8 is fixedly connected with an L-shaped driving tooth block 801. The lower end of the driving tooth block 801 is a tooth for meshing with the ring gear 701. A pressing wheel 802 is provided at the top of the driving tooth block 801. The pressing wheel 802 is rotatably installed on the frame 1. A trigger switch 8011 opposite to the pressing wheel 802 is provided on the end block of the driving tooth block 801 close to the opening and closing cylinder 8. When the piston rod of the opening and closing cylinder 8 is pushed out, the driving tooth block 801 drives the discharge cylinder 7 to rotate 180 degrees, changing from the closed state to the discharge state. The trigger switch 8011 abuts against the pressing wheel 802 to connect the control circuit of the discharge motor 6, and the discharge motor 6 works, and the spiral blade 702 rotates to discharge materials.

[0029] Among them, the cutting mechanism includes a cutting knife 1001 horizontally arranged along the edge of the discharge port of the discharge cylinder 7 at the end of the piston rod of the cutting cylinder 10. The cutting edge of the cutting knife 1001 faces the edge of the discharge port of the discharge cylinder 7. An outwardly turned guide material lower fin 1002 is provided at the lower part of the outer side wall of the outer end of the cutting knife 1001. The guide material lower fin 1002 sends the cut rubber material outwards. A knife sleeve 1004 is sleeved on the cutting knife 1001. The knife sleeve 1004 is fixed on the outer wall of the frame 1 to provide guidance for the cutting knife 1001. A connecting pin 1003 is vertically and outwardly provided at the root of one end of the cutting knife 1001 close to the cutting cylinder 10.

[0030] Embodiment 2. On the basis of Embodiment 1, the material receiving mechanism includes a material receiving tray 11, a support plate 1101, a cooling fan 1102, a connecting arm 1103, a connecting pin hole 11031, and a weighing scale 1104. The material receiving tray 11 is in an L-shaped structure. The end of the horizontal section of the material receiving tray 11 is rotatably installed on the frame 1 through a hinge shaft. A support plate 1101 for supporting the material receiving tray 11 to keep it horizontal is vertically provided on the frame 1 below the material receiving tray 11. A cooling fan 1102 for quickly cooling the rubber material is embedded in the vertical section of the material receiving tray 11. A connecting arm 1103 is rotatably connected to the upper edge of the material receiving tray 11 through a hinge shaft. An oblong connecting pin hole 11031 is formed through the other end of the connecting arm 1103. The connecting pin 1003 slides in the connecting pin hole 11031. A weighing scale 1104 for weighing the amount of the rubber material is provided on the top plane of the horizontal section of the material receiving tray 11. The weighing scale 1104 is interlocked with the cutting mechanism. After the weighing scale 1104 weighs up to the set value, the cutting mechanism works. The cutter 1001 moves towards one end of the discharge cylinder 7. The connecting pin 1003 first makes a free stroke movement in the connecting pin hole 11031. After the cutter 1001 completely cuts off the rubber material at the outlet of the discharge cylinder 7, the connecting pin 1003 abuts against the lowermost end of the connecting pin hole 11031. The cutter 1001 continues to move, and the material receiving tray 11 is pushed to turn up through the connecting arm 1103, and the rubber material on the material receiving tray 11 is unloaded (as Figure 9 shown).

[0031] The working principle of this embodiment: Open the sealing door 201, and add the prepared rubber raw materials and compounding agents into the internal mixer 2. At this time, the two feeding clamping plates 202 are in an open state, and the raw materials and compounding agents fall to the bottom of the internal mixer 2. After the feeding is completed, close the sealing door 201, start the heating wire in the feeding clamping plate 202 to preliminarily preheat the raw materials. At the same time, the temperature sensor starts to monitor the temperature of the rubber material in the internal mixer 2 in real time and feeds the data back to the control box 9; Start the permanent magnet synchronous motor 3. The permanent magnet synchronous motor 3 drives the rotor 4 connected thereto to rotate. Since the two rotors 4 mesh with each other, the synchronous rotation of the two rotors 4 in the internal mixer 2 is realized. The spiral edges with variable angles on the surface of the rotor 4 gradually increase the angle with the axis of the rotor 4 from one end to the other end, so that the rubber material is subjected to continuously changing shear force and extrusion force during the mixing process, thereby realizing more uniform mixing; Meanwhile, start the feeding motor 5. As a reciprocating motor, the feeding motor 5 drives the feeding shaft 501 to perform a reciprocating rotational motion. The feeding spiral groove 502 on the feeding shaft 501 causes the feeding sleeve seat 504 to perform a reciprocating linear motion between the feeding shaft 501 and the directional guide rod 503. The feeding rod 505 on the feeding sleeve seat 504 then performs a reciprocating stirring action at the bottom of the inner cavity of the internal mixer 2, further promoting the mixing of the rubber compound and ensuring the uniform dispersion of the compounding agent in the rubber. During the entire mixing process, the temperature sensor monitors the temperature of the rubber compound in real time, and the control box 9 automatically adjusts the heating power of the heating wire according to the preset temperature value to maintain the temperature of the rubber compound in the internal mixer 2 within a suitable range; When the mixing is completed and discharging is required, start the opening and closing assembly. Activate the opening and closing cylinder 8, and its piston rod extends to drive the L-shaped driving tooth block 801 to move. The teeth at the lower end of the driving tooth block 801 mesh with the ring teeth 701 on the discharging cylinder 7, thereby driving the discharging cylinder 7 to rotate 180 degrees. At this time, the docking material port 703 on the discharging cylinder 7 is converted from facing the inner cavity of the internal mixer 2 to facing downward, and the rubber compound in the internal mixer 2 can enter the discharging cylinder 7 through the docking material port 703. Meanwhile, during the movement of the driving tooth block 801, when the trigger switch 8011 abuts against the pressure wheel 802, the trigger switch 8011 connects the control circuit of the discharging motor 6 to prepare for the start of the discharging motor 6; The discharging motor 6 is started, and its rotating shaft drives the spiral blade 702 in the inner cavity of the discharging cylinder 7 to rotate through a coupling. The spiral blade 702 is designed with a variable pitch. The pitch is smaller at the end close to the discharging motor 6 and gradually increases at the end far from the discharging motor 6, which enables the rubber compound to be gradually loosened and pushed forward in the discharging cylinder 7. During the discharging process, the semi-circular discharging pressing tongue 203 on the inner side wall of the inner cavity of the internal mixer 2 corresponding to the discharging opening end of the discharging cylinder 7 plays a role in pressing and guiding the rubber compound to ensure the smooth discharge of the rubber compound; The material receiving tray 11 is horizontally placed on the frame 1, and the supporting plate 1101 below it supports the material receiving tray 11 to keep it in a horizontal state. The weighing scale 1104 on the material receiving tray 11 weighs the weight of the rubber material falling into the material receiving tray 11 in real time. When the weighing scale 1104 reaches the set value, the cutting mechanism interlocked with the weighing scale 1104 starts to work. The piston rod of the cutting cylinder 10 extends, pushing the cutting knife 1001 to move horizontally along the edge of the discharge cylinder 7. The cutting edge of the cutting knife 1001 faces the edge of the discharge cylinder 7, and cuts the rubber material at the outlet of the discharge cylinder 7. The lower guiding fin 1002 at the lower side of the outer end side wall of the cutting knife 1001 guides the cut rubber material outwards, so that it can smoothly fall into the material receiving tray 11; during the movement of the cutting knife 1001, the connecting pin 1003 perpendicular to the outside at the root of the end of the cutting knife 1001 close to the cutting cylinder 10 first makes an idle stroke movement in the connecting pin hole 11031 on the connecting arm 1103. When the cutting knife 1001 completely cuts the rubber material at the outlet of the discharge cylinder 7, the connecting pin 1003 abuts against the lowermost end of the connecting pin hole 11031. At this time, the cutting knife 1001 continues to move, pushing the material receiving tray 11 to turn up through the connecting arm 1103, and the rubber material on the material receiving tray 11 is unloaded. After the unloading is completed, the material receiving tray 11 falls back onto the supporting plate 1101 under the action of gravity and returns to the horizontal state, ready to receive the next cut rubber material, which can achieve the effect of quantitative discharging, helps subsequent tire processing, avoids re-cutting and dividing the material, and improves the working effect. At the same time, the cooling fan 1102 embedded in the vertical section of the material receiving tray 11 can quickly cool the rubber material, which helps to keep the performance of the rubber material stable.

[0032] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0033] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0034] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A rubber internal mixer for rubber tire production, comprising: A frame (1); a horizontal mixing chamber (2) is provided in the frame (1); a control box (9) for integrated control is also mounted on the inner wall of the frame (1) below the mixing chamber (2); the feature is that the mixing chamber (2) is a fan-shaped columnar structure; two mutually meshing rotors (4) are arranged in the mixing chamber (2); surfaces of the rotors (4) are provided with screw ridges of a special shape; the screw ridges are designed with a variable angle, and the angle between the screw ridges and the axis of the rotor (4) gradually increases from one end of the rotor (4) to the other end; a permanent magnet synchronous motor (3) is provided on the side wall at one end of the frame (1) and is rotatably connected to one end of one of the rotors (4); and the permanent magnet synchronous motor (3) is connected to the permanent magnet synchronous motor (3). A material shifting assembly is also provided in the mixing chamber (2) outside the rotor (4) connected to the mixing machine (3); the lower end of the mixing chamber (2) is a discharging barrel (7) for discharging rubber, the discharging barrel (7) is rotatably mounted on both ends of the frame (1) along the bottom of the mixing chamber (2), and the frame (1) is also provided with a discharging motor (6) corresponding to driving the discharging barrel (7), the other end of the discharging barrel (7) passes through the frame (1) to form an open discharging end, and the frame (1) at the open discharging end is also provided with a rubber material cutting mechanism capable of automatically unloading according to the amount of material discharged; and an opening and closing assembly for controlling the turning of the discharging barrel (7) is also provided on the frame (1) at the end where the discharging motor (6) is located.

2. A rubber internal mixer for rubber tire production according to claim 1, characterized in that: A sealing door (201) is provided at the upper end of the mixing chamber (2); two V-shaped feeding clamps (202) are provided at the position of the sealing door (201) at the bottom of the inner cavity of the mixing chamber (2); the lower ends of the two feeding clamps (202) correspond to the meshing positions of the two rotors (4); heating wires are provided in the two feeding clamps (202), and a plurality of temperature sensors for real-time monitoring of the temperature of the rubber material in the mixing chamber (2) are distributed in the mixing chamber (2) below the feeding clamps (202).

3. A rubber internal mixer for rubber tire production according to claim 1, characterized in that: The material shifting assembly comprises two mutually parallel material shifting shafts (501) and a directional guide rod (503); a material shifting sleeve (504) is slidably sleeved between the material shifting shaft (501) and the directional guide rod (503); a material shifting screw (502) for reciprocating movement of the material shifting sleeve (504) is also provided on the material shifting shaft (501); a material shifting motor (5) for driving the material shifting shaft (501) is also provided on the outer wall of the frame (1); the material shifting motor (55) is a reciprocating motor; a material shifting rod (505) is provided on the material shifting sleeve (504) and is distributed around the bottom of the inner cavity of the mixing chamber (2); when the material shifting rod (505) passes through the discharge barrel (7), it bends upward and passes through the barrel wall of the discharge barrel (7); the material shifting shaft (501) reciprocates and drives the material shifting rod (505) to reciprocate and stir the rubber material at the bottom of the inner cavity of the mixing chamber (2) through the material shifting sleeve (504).

4. A rubber internal mixer for rubber tire production according to claim 1, characterized in that: The portion of the discharge barrel (7) protrudes from the mixing chamber (2), and the portion of the discharge barrel (7) corresponding to the mixing chamber (2) is provided with a docking port (703) for guiding the rubber material in the inner cavity of the mixing chamber (2) to be discharged. When the docking port (703) faces the inner cavity of the mixing chamber (2), the two end edges of the docking port (703) are matched and docked with the inner cavity of the mixing chamber (2). When the docking port (703) is turned 180 degrees downward, the discharge barrel (7) closes the mixing chamber (2) to discharge the material. A semicircular discharge pressing tongue (203) is provided on the inner side wall of the inner cavity of the mixing chamber (2) corresponding to the open discharge end of the discharge barrel (7). The outer wall of the discharge barrel (7) is tangent to the discharge pressing tongue (203). The discharge pressing tongue (203) is used to press and guide the rubber material to be discharged smoothly when the discharge barrel (7) is discharging the material.

5. A rubber internal mixer for rubber tire production according to claim 1, characterized in that: A spiral blade (702) is rotatably mounted in the inner cavity of the discharge barrel (7); the rotating shaft of the spiral blade (702) is fixedly connected to the rotating shaft of the discharge motor (6) via a coupling; the spiral blade (702) adopts a variable pitch design, wherein the pitch at the end close to the discharge motor (6) is smaller, and the pitch at the end away from the discharge motor (6) gradually increases; and a ring tooth (701) is provided in an annular shape at the end of the discharge barrel (7) close to the discharge motor (6), and the ring tooth (701) is opposite to the opening and closing component.

6. A rubber internal mixer for rubber tire production according to claim 5, characterized in that: The opening and closing assembly is composed of an opening and closing cylinder (8), a driving tooth block (801), a trigger switch (8011) and a pressure wheel (802). The end of the piston rod of the opening and closing cylinder (8) is fixedly connected to an L-shaped driving tooth block (801). The lower end of the driving tooth block (801) is a tooth meshing with the ring tooth (701). The top of the driving tooth block (801) is provided with a pressure wheel (802) that abuts against it. The pressure wheel (802) is rotatably mounted on the frame (1). The driving tooth block A trigger switch (8011) is provided on the end block of the opening and closing cylinder (8) and is opposite to the pressing wheel (802). When the piston rod of the opening and closing cylinder (8) is pushed out, the driving gear block (801) drives the discharging cylinder (7) to rotate 180 degrees, and the closed state is converted into the discharging state. The trigger switch (8011) abuts against the pressing wheel (802) to connect the control circuit of the discharging motor (6), the discharging motor (6) works, and the spiral blade (702) rotates to discharge the material.

7. A rubber internal mixer for rubber tire production according to claim 1, characterized in that: The cutting mechanism comprises a cutting knife (1001) provided horizontally at the end of the piston rod of the cutting cylinder (10) along the edge of the discharge barrel (7), the blade of the cutting knife (1001) facing the edge of the discharge barrel (7), an outward-turned material guide lower fin (1002) provided near the lower part of the outer end side wall of the cutting knife (1001), the material guide lower fin (1002) delivering the cut rubber material outward, the cutting knife (1001) having a knife sleeve (1004) fixed on the outer wall of the frame (1) for providing guidance for the cutting knife (1001), and a connecting pin (1003) provided vertically outwardly at the root of one end of the cutting knife (1001) close to the cutting cylinder (10).

8. A rubber internal mixer for rubber tire production according to claim 7, characterized in that: The material receiving mechanism comprises a material receiving tray (11), a support plate (1101), a cooling fan (1102), a connecting arm (1103), a connecting pin hole (11031) and a weighing scale (1104). The material receiving tray (11) is an L-shaped structure. The end of the horizontal section of the material receiving tray (11) is rotatably mounted on the frame (1) via a hinge shaft. A supporting plate (1101) for supporting the material receiving tray (11) to maintain horizontality is also vertically provided on the frame (1) below the material receiving tray (11). A cooling fan (1102) for rapid cooling of the rubber material is embedded in the vertical section of the material receiving tray (11). The upper edge of the material receiving tray (11) is rotatably connected to the connecting arm (1103) via a hinge shaft. The other end of the connecting arm (1103) is penetrated by a waist-shaped connecting pin hole (11031). The connecting pin (1003) is slidably placed in the connecting pin hole (11031), and a weighing scale (1104) for weighing the amount of rubber material is provided on the top plane of the horizontal section of the material receiving tray (11). The weighing scale (1104) is interlocked with the cutting mechanism. After the weighing of the weighing scale (1104) reaches the set value, the cutting mechanism works, and the cutter (1001) moves toward one end of the discharge barrel (7). The connecting pin (1003) first moves in the connecting pin hole (11031) for an empty stroke. After the cutter (1001) completely cuts off the rubber material at the outlet of the discharge barrel (7), the connecting pin (1003) abuts against the lower end of the connecting pin hole (11031), and the cutter (1001) continues to move, pushing the material receiving tray (11) to flip up through the connecting arm (1103), and the rubber material on the material receiving tray (11) is discharged.

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