Efficient rubber mixing open mill and open milling method thereof

Abstract

The invention relates to an efficient rubber mixing open mill and an open milling method thereof, and relates to the technical field of open mills, the efficient rubber mixing open mill comprises an internal mixing system, a plurality of open milling systems, a plurality of material swinging systems, a rack, a plurality of material pulling systems and a cooling system, the open milling systems are sequentially installed on the rack from top to bottom, and the material swinging systems are slidably installed on the rack; the material placing systems and the material pulling systems are installed between the adjacent open milling systems, the moving directions of the material placing systems and the corresponding material pulling systems are opposite, the cooling system is communicated with the open milling systems, and each material pulling system comprises two material pulling traction shafts, two material pulling reference ropes, a material pulling frame, two material pulling roller sets and two material pulling bearing devices. The two material pulling reference ropes are wound around the two ends of the two material pulling traction shafts respectively, the material pulling frame is installed on the material pulling reference ropes, the two material pulling roller sets are rotatably installed on the material pulling frame, the material pulling bearing devices are rotatably installed on the material pulling frame, and the two material pulling bearing devices extend towards the two sides of the material pulling frame, so that the mixing speed is increased.

Description

Technical Field

[0001] This invention relates to the field of open mill technology, and in particular to a high-efficiency rubber mixing open mill and its mixing method. Background Technology

[0002] High-efficiency rubber mixing mills are core equipment for achieving high efficiency in the modern rubber industry. Their "efficiency" is mainly reflected in three dimensions: large scale, automation, and precision. In industrial production, large-scale mixing mills, ranging from 18 inches (φ450mm) to XK-560, have become mainstream. Through their large-capacity roller design, they can feed up to 65kg of material at a time, significantly increasing production capacity per unit time. Equipped with variable frequency speed control and constant temperature control systems, they can precisely adjust the roller speed ratio and temperature, ensuring uniform mixing and stable rubber compound quality.

[0003] In the fields of R&D and specialty materials, laboratory-grade precision open mixing mills, with their electric heating, servo drive, and PLC touch control systems, achieve precise control over temperature, roll gap, and process parameters, significantly shortening the formulation development cycle. Currently, the technological trend of high-efficiency open mixing mills is towards intelligentization and energy conservation, including the integration of automated rubber turning devices, the configuration of permanent magnet synchronous motors to reduce energy consumption, and real-time data monitoring to ensure the stability of continuous operation, fully meeting the stringent process requirements from masterbatch mixing to final molding.

[0004] Existing open mills require different temperatures to be reached before adding different materials, and then undergo multiple milling processes. This necessitates transfer between different open mills, resulting in low efficiency. Summary of the Invention

[0005] To overcome the technical defects of the existing technology, the present invention provides a high-efficiency rubber mixing open mill and its mixing method, which accelerates the mixing speed.

[0006] The technical solution adopted in this invention is: A high-efficiency rubber mixing mill includes an internal mixing system, several mixing systems, several material feeding systems, a frame, several material pulling systems, and a cooling system. The mixing systems are sequentially mounted on the frame from top to bottom. The internal mixing system is mounted on top of the frame. Each material feeding system is slidably mounted on the frame, with its sliding direction horizontal. The material feeding systems are installed between adjacent mixing systems. The material pulling systems are also installed between adjacent mixing systems, with each material feeding system located above a corresponding material pulling system. The movement directions of each material feeding system and its corresponding material pulling system are opposite. The cooling system is connected to each… The open mill system is connected. Each of the material pulling systems includes two material pulling traction shafts, two material pulling reference ropes, a material pulling frame, two material pulling roller groups, and two material pulling support devices. The two material pulling traction shafts of the same material pulling system are respectively installed on both sides of the frame. The two material pulling reference ropes are respectively wrapped around the two ends of the two material pulling traction shafts. The material pulling frame is installed on the two material pulling reference ropes. The two material pulling roller groups are rotatably installed on the material pulling frame. Each material pulling roller group forms a material pulling space on both sides of the material pulling frame. The material pulling support devices are rotatably installed on the material pulling frame. The two material pulling support devices extend to both sides of the material pulling frame.

[0007] Specifically, the mixing system includes a mixing chamber, two mixing rollers, a mixing motor, and a mixing opening and closing device. The mixing opening and closing device is slidably installed at the bottom of the mixing chamber. The two mixing rollers are rotatably installed inside the mixing chamber and mesh with each other. The mixing motor is installed on the mixing chamber and is drivenly connected to one of the mixing rollers.

[0008] Specifically, the open mill system includes a translation slide block, an open mill reference roll, an open mill translation roll, a reference roll drive motor, and a translation roll drive motor. The open mill reference roll is rotatably mounted on the frame, the open mill translation roll is rotatably mounted on the translation slide block, the translation slide block is slidably mounted on the frame, the reference roll drive motor is driven by the open mill reference roll, and the translation roll drive motor is driven by the translation slide block through a lead screw.

[0009] Specifically, the translation roller drive motor and the open mill translation roller are connected by a universal joint coupling.

[0010] Specifically, the material handling system includes a material handling rail, a material handling slider, a material handling transverse motor, and a material handling conveyor roller. The material handling rail is mounted on the frame, the material handling slider is slidably mounted on the material handling rail, the material handling transverse motor is mounted on the material handling slider, the output end of the material handling transverse motor is provided with a transverse gear, the transverse gear meshes with a pre-set rack on the material handling rail, and the material handling conveyor roller is rotatably mounted on the material handling slider.

[0011] Specifically, the cooling system includes a water pump, a chiller, and chilled water pipes. The chilled water pipes are connected to the water pump, the water pump is connected to the chiller, and the chilled water pipes are connected to each open mill system.

[0012] Specifically, the material pulling and supporting device includes a supporting motor, a supporting rod, and a supporting wheel. The supporting motor is mounted on the material pulling frame, the supporting rod is mounted on the output end of the supporting motor, and the supporting wheel is rotatably mounted on the output end of the supporting rod.

[0013] The high-efficiency rubber compounding open mill method includes the following steps: S1: The internal mixing system discharges the mixed material, which falls into the uppermost open mixing system; S2: The top layer material feeding system moves horizontally and swings, while the top layer material pulling system swings in the opposite direction, causing the material to be stretched and then folded towards the lower open milling system under its own gravity. S3: The material falls layer by layer on each open mill system, and the cooling system controls the temperature of each open mill system.

[0014] The beneficial effects of this invention are: Each open mill system is installed sequentially on the frame from top to bottom. The internal mixer system is installed at the top of the frame, where the material is internally mixed, facilitating unloading to the open mill systems below. Each material handling system is slidably installed on the frame, with the sliding direction of each system horizontal. The material handling systems are installed between adjacent open mill systems. When the internal mixer unloads material to the lower levels, the material handling systems oscillate, facilitating the dispersion of material to the lower open mill systems. For material processed by the upper open mill systems, the material handling systems oscillate, facilitating the dispersion of material to even lower open mill systems. Each material pulling system is installed between adjacent open mill systems. Located above the corresponding material pulling system, each material arranging system moves in the opposite direction to the corresponding material pulling system. The material passes through the material arranging system and the corresponding material pulling system from top to bottom. Because the material arranging system and the corresponding material pulling system move in opposite directions, the rubber material is stretched out when the distance between the material arranging system and the corresponding material pulling system is at its maximum. The length of the material is increased by stretching, which makes it easier for the material to spread out flat when it is fed into the open mill system. On the other hand, because the cross-sectional size of the material becomes smaller, the material can be mixed more quickly and evenly when it enters the open mill system, thereby speeding up the mixing speed. The cooling system is connected to each open mill system to achieve temperature control.

[0015] Each material pulling system includes two material pulling traction shafts, two material pulling reference ropes, a material pulling frame, two material pulling roller sets, and two material pulling support devices. The two material pulling traction shafts of the same material pulling system are respectively installed on both sides of the frame, and are located at both ends of the open milling system. The material pulling traction shafts are driven by motors. The two material pulling reference ropes pass around the two ends of the two material pulling traction shafts in sequence, thereby causing the two material pulling traction shafts to drive the two material pulling reference ropes to move. The material pulling frame is installed on the two material pulling reference ropes, and both material pulling roller sets rotate. The system is installed on the material pulling frame. Each material pulling roller group forms a material pulling space on both sides of the material pulling frame. The material pulling support device is rotatably installed on the material pulling frame. The two material pulling support devices extend to both sides of the material pulling frame to support the pulled rubber and facilitate the reset of the material pulling support device. When the material pulling support device resets, the material rolls on the material pulling roller group and the material pulling support device. Under its own gravity, it falls from the position of the material pulling space. Because the rubber material is pulled apart by each material balancing system and the corresponding material pulling system, the material is fully spread on the open mixing system, which speeds up the mixing speed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the present invention from another perspective.

[0018] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the material pulling system.

[0020] Figure 5 This is a cross-sectional view of the material pulling system.

[0021] Figure 6 This is a schematic diagram of the structure when the spacing between the material handling system and the corresponding material pulling system of the material pulling system is at its maximum.

[0022] Figure 7 This is a schematic diagram of the structure of the material handling system and the corresponding material pulling system when they are close to each other.

[0023] Figure 8 This is a schematic diagram of the structure when the spacing between the material handling system and the corresponding material pulling system of the material pulling system is at its maximum.

[0024] Explanation of reference numerals in the attached figures: 1. Internal mixing system; 11. Internal mixing box; 12. Internal mixing roller; 13. Internal mixing motor; 2. Open mill system; 21. Open mill reference roll; 22. Open mill translation roll; 23. Reference roll drive motor; 25. Translation roll drive motor; 3. Material handling system; 31. Material handling rail; 32. Material handling slider; 33. Material handling transverse motor; 35. Material handling conveyor roller; 4. Rack; 5. Material pulling system; 51. Material pulling traction shaft; 52. Material pulling reference rope; 53. Material pulling frame; 54. Material pulling roller assembly; 55. Material pulling support device; 551. Support motor; 552. Support rod; 553. Support wheel; 56. Material pulling space; 6. Cooling system. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 — Figure 8 As shown, this embodiment provides a high-efficiency rubber mixing mill, including a mixing system 1, several mixing systems 2, several material handling systems 3, a frame 4, several material pulling systems 5, and a cooling system 6. Each mixing system 2 is installed sequentially on the frame 4 from top to bottom. The mixing system 1 is installed at the top of the frame 4, where the material is mixed to facilitate unloading to the lower mixing systems 2. Each material handling system 3 is slidably installed on the frame 4, with the sliding direction of each system horizontal. Each material handling system 3 is installed between adjacent mixing systems 2. When the mixing system 1 unloads material to the lower side, the material handling system 3 swings, facilitating the dispersion of material to the lower mixing systems 2. For material mixed by the upper mixing systems 2, the material handling system 3 swings, facilitating the material to the lower layers. The open milling system 2 is dispersed, and each material pulling system 5 is installed between adjacent open milling systems 2. Each material shoveling system 3 is located above the corresponding material pulling system 5. The movement directions of each material shoveling system 3 and the corresponding material pulling system 5 are opposite. The material passes through the material shoveling system 3 and the corresponding material pulling system 5 from top to bottom. Since the movement directions of the material shoveling system 3 and the corresponding material pulling system 5 are opposite, the rubber material is stretched out when the distance between the material shoveling system 3 and the corresponding material pulling system 5 is at its maximum. The length of the material is increased by stretching, which makes it easier for the material to spread out flat when it is fed into the upper side of the open milling system 2. On the other hand, since the cross-sectional size of the material becomes thinner, the material can be mixed more quickly and evenly when it enters the open milling system 2, thereby speeding up the mixing speed. The cooling system 6 is connected to each open milling system 2 to realize temperature control.

[0026] Specifically, each material pulling system 5 includes two material pulling traction shafts 51, two material pulling reference ropes 52, a material pulling frame 53, two material pulling roller sets 54, and two material pulling support devices 55. The two material pulling traction shafts 51 of the same material pulling system 5 are respectively installed on both sides of the frame 4. The "both sides" mentioned above refers to the two material pulling traction shafts 51 of the same material pulling system 5 being located at both ends of the open milling system 2. The material pulling traction shafts 51 are driven by a motor. The two material pulling reference ropes 52 pass around the two ends of the two material pulling traction shafts 51 in sequence, thereby causing the two material pulling traction shafts 51 to drive the two material pulling reference ropes 52 to move respectively. The material pulling frame 53 is installed on the two material pulling reference ropes 52. The material pulling roller groups 54 are all rotatably mounted on the material pulling frame 53. Each material pulling roller group 54 forms a material pulling space 56 on both sides of the material pulling frame 53. The material pulling support device 55 is rotatably mounted on the material pulling frame 53. The two material pulling support devices 55 extend to both sides of the material pulling frame 53 to support the pulled rubber and facilitate the reset of the material pulling support device 55. When the material pulling support device 55 resets, the material rolls on the material pulling roller group 54 and the material pulling support device 55. Under its own gravity, it falls from the position of the material pulling space 56. Since the rubber material is pulled apart by each material laying system 3 and the corresponding material pulling system 5, the material is fully spread on the open mixing system 2, which speeds up the mixing speed.

[0027] Specifically, the mixing system 1 includes a mixing chamber 11, two mixing rollers 12, a mixing motor 13, and a mixing opening and closing device. The mixing opening and closing device is slidably installed at the bottom of the mixing chamber 11. The two mixing rollers 12 are rotatably installed inside the mixing chamber 11 and mesh with each other. The mixing motor 13 is installed on the mixing chamber 11 and is connected to one of the mixing rollers 12 to achieve the rotation of the mixing roller 12. After the rubber material is mixed in the mixing chamber 11, the mixing opening and closing device slides open, allowing the material to fall.

[0028] Specifically, the open mill system 2 includes a translation slide block, an open mill reference roll 21, an open mill translation roll 22, a reference roll drive motor 23, and a translation roll drive motor 25. The open mill reference roll 21 is rotatably mounted on the frame 4, the open mill translation roll 22 is rotatably mounted on the translation slide block, and the translation slide block is slidably mounted on the frame 4. The reference roll drive motor 23 is connected to the open mill reference roll 21, and the translation roll drive motor 25 is connected to the translation slide block through a lead screw, thereby adjusting the distance between the open mill reference roll 21 and the open mill translation roll 22.

[0029] Specifically, the translation roller drive motor 25 is connected to the open mill translation roller 22 through a universal joint coupling, and the transmission is maintained when the open mill translation roller 22 is translated.

[0030] Specifically, the material handling system 3 includes a material handling rail 31, a material handling slider 32, a material handling transverse motor 33, and a material handling conveyor roller 35. The material handling rail 31 is mounted on the frame 4, the material handling slider 32 is slidably mounted on the material handling rail 31, the material handling transverse motor 33 is mounted on the material handling slider 32, and the output end of the material handling transverse motor 33 is provided with a transverse gear, which meshes with a pre-set rack on the material handling rail 31. The material handling conveyor roller 35 is rotatably mounted on the material handling slider 32, thereby driving the material handling conveyor roller 35 to move laterally. Under the rolling of the material handling conveyor roller 35, the rubber material is moved laterally from left to right. The left and right directions refer to the axial directions of the open mill reference roller 21 and the open mill translation roller 22.

[0031] Specifically, the cooling system 6 includes a water pump, a chiller, and chilled water pipes. The chilled water pipes are connected to the water pump, the water pump is connected to the chiller, and the chilled water pipes are connected to each open mill system 2, thereby controlling the temperature of the open mill system 2.

[0032] Specifically, the material pulling and supporting device 55 includes a supporting motor 551, a supporting rod 552, and a supporting wheel 553. The supporting motor 551 is mounted on the material pulling frame 53, the supporting rod 552 is mounted on the output end of the supporting motor 551, and the supporting wheel 553 is rotatably mounted on the output end of the supporting rod 552. The supporting wheel 553 supports the rubber material under the material, facilitating the parallel movement of the material pulling and supporting device 55 under the material, and facilitating the release of the rubber material from the material pulling space 56. As the material falls, the supporting motor 551 changes the vertical angle of the supporting rod 552, thereby creating a slope between the supporting roller 553 and the pulling roller group 54. This slope is used to make the material flow downwards into the pulling space 56. In order to prevent the material from flowing backwards due to tension when the distance between the material swaying system 3 and the corresponding pulling system 5 is at its maximum, i.e. to prevent the material from being pulled upwards from the pulling space 56, the rotating shaft of the supporting roller 553 is provided with a ratchet that allows the material to flow unidirectionally downwards into the pulling space 56.

[0033] The high-efficiency rubber compounding open mill method includes the following steps: S1: The internal mixing system 1 discharges the mixed material, which falls into the uppermost open mixing system 2; S2: The top layer material feeding system 3 moves horizontally and swings, while the top layer material pulling system 5 swings in the opposite direction, so that the material is stretched and then folds downward towards the side open milling system 2 under its own gravity. S3: The material falls layer by layer on each open mill system 2, and the cooling system 6 controls the temperature of each open mill system 2.

[0034] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency rubber mixing open mill, characterized in that, The assembly includes a mixing system, several open milling systems, several material handling systems, a frame, several material pulling systems, and a cooling system. Each of the open milling systems is sequentially mounted on the frame from top to bottom. The mixing system is mounted on top of the frame. Each material handling system is slidably mounted on the frame, with the sliding direction of each system horizontal. Each material handling system is installed between adjacent open milling systems. Each material pulling system is installed between adjacent open milling systems, with each material handling system located above a corresponding material pulling system. The movement directions of each material handling system and its corresponding material pulling system are opposite. The cooling system is connected to each open milling system. Each of the aforementioned material pulling systems includes two material pulling traction shafts, two material pulling reference ropes, a material pulling frame, two material pulling roller groups, and two material pulling support devices. The two material pulling traction shafts of the same material pulling system are respectively installed on both sides of the frame. The two material pulling reference ropes are respectively passed around the two ends of the two material pulling traction shafts in sequence. The material pulling frame is installed on the two material pulling reference ropes. The two material pulling roller groups are rotatably installed on the material pulling frame. Each material pulling roller group forms a material pulling space on both sides of the material pulling frame. The material pulling support devices are rotatably installed on the material pulling frame, and the two material pulling support devices extend to both sides of the material pulling frame.

2. The high-efficiency rubber mixing open mill according to claim 1, characterized in that, The mixing system includes a mixing chamber, two mixing rollers, a mixing motor, and a mixing opening and closing device. The mixing opening and closing device is slidably installed at the bottom of the mixing chamber. The two mixing rollers are rotatably installed inside the mixing chamber and mesh with each other. The mixing motor is installed on the mixing chamber and is drivenly connected to one of the mixing rollers.

3. The high-efficiency rubber mixing open mill according to claim 1, characterized in that, The open mill system includes a translation slide block, an open mill reference roll, an open mill translation roll, a reference roll drive motor, and a translation roll drive motor. The open mill reference roll is rotatably mounted on the frame, the open mill translation roll is rotatably mounted on the translation slide block, the translation slide block is slidably mounted on the frame, the reference roll drive motor is driven by the open mill reference roll, and the translation roll drive motor is driven by the translation slide block through a lead screw.

4. The high-efficiency rubber mixing open mill according to claim 3, characterized in that, The translation roller drive motor is connected to the open mill translation roller via a universal joint coupling.

5. The high-efficiency rubber mixing open mill according to claim 1, characterized in that, The material handling system includes a material handling rail, a material handling slider, a material handling transverse motor, and a material handling conveyor roller. The material handling rail is mounted on the frame, the material handling slider is slidably mounted on the material handling rail, the material handling transverse motor is mounted on the material handling slider, the output end of the material handling transverse motor is provided with a transverse gear, the transverse gear meshes with a pre-set rack on the material handling rail, and the material handling conveyor roller is rotatably mounted on the material handling slider.

6. The high-efficiency rubber mixing open mill according to claim 1, characterized in that, The cooling system includes a water pump, a chiller, and chilled water pipes. The chilled water pipes are connected to the water pump, the water pump is connected to the chiller, and the chilled water pipes are connected to each open mill system.

7. The high-efficiency rubber mixing open mill according to claim 1, characterized in that, The material pulling and supporting device includes a supporting motor, a supporting rod, and a supporting wheel. The supporting motor is mounted on the material pulling frame, the supporting rod is mounted on the output end of the supporting motor, and the supporting wheel is rotatably mounted on the output end of the supporting rod.

8. A high-efficiency rubber mixing mill open mill method, characterized in that, Includes the following steps: S1: The internal mixing system discharges the mixed material, which falls into the uppermost open mixing system; S2: The top layer material feeding system moves horizontally and swings, while the top layer material pulling system swings in the opposite direction, causing the material to be stretched and then folded towards the lower open milling system under its own gravity. S3: The material falls layer by layer on each open mill system, and the cooling system controls the temperature of each open mill system.

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