CN113232186A - Rubber mixing process system and method - Google Patents
Rubber mixing process system and method Download PDFInfo
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- CN113232186A CN113232186A CN202110505596.0A CN202110505596A CN113232186A CN 113232186 A CN113232186 A CN 113232186A CN 202110505596 A CN202110505596 A CN 202110505596A CN 113232186 A CN113232186 A CN 113232186A
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- rubber
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- passing
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- 238000010074 rubber mixing Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 102
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 238000007514 turning Methods 0.000 claims abstract description 35
- 238000000465 moulding Methods 0.000 claims abstract description 29
- 238000013329 compounding Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 210000001503 joint Anatomy 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000004513 sizing Methods 0.000 claims description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
- B29B7/56—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set
- B29B7/566—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set provided with means to take material away from a set of rollers and to reconduct it to the same set; provided with endless belts, e.g. which can be in or out of cooperation with at least one of the rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
- B29B7/56—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/62—Rollers, e.g. with grooves
- B29B7/625—Rollers, e.g. with grooves provided with cooling or heating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7461—Combinations of dissimilar mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/748—Plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The rubber mixing process system and the method comprise an internal mixer, a feeding system for feeding raw rubber into the internal mixer, a compounding agent feeder for feeding compounding agents into the internal mixer, a cooling open mill for turning over rubber and cooling and a molding rubber collecting system for tabletting and collecting rubber, wherein the cooling open mill is in butt joint with a discharge port of the internal mixer, and the molding rubber collecting system is characterized in that: the automatic thin-passing device for carrying out low-temperature thin-passing on the rubber materials for multiple times is arranged between the cooling open mill and the molding rubber receiving system, and the rubber materials are conducted between the cooling open mill and the automatic thin-passing device and between the automatic thin-passing device and the molding rubber receiving system through the conveying belts. The invention effectively improves the dispersion rate of the compounding agent, reduces the labor intensity of thin passing, forms circular rubber mixing through multiple times of low-temperature thin passing, can effectively reduce the rubber mixing time of rubber raw materials and the compounding agent in the internal mixer, improves the production efficiency, has low requirement on open mill equipment, low energy consumption and low investment, effectively reduces the labor intensity of thin passing, and improves the automation level of a rubber mixing production line.
Description
Technical Field
The invention relates to a rubber mixing process system and a method, belonging to the technical field of rubber mixing processes.
Background
The traditional rubber mixing process method mainly takes an internal mixer as a main part, and achieves the purpose of dispersing raw rubber and compounding ingredients by repeatedly entering the internal mixer for rubber mixing, so as to prepare the rubber mixture required by products. The existing one-step process is to vulcanize rubber materials through an open mill after once internal mixing, for example, in the method in patent CN102019649A, a section of rubber is finished in an internal mixer, and then vulcanization is finished in the open mill through a conveying belt, although the method has high production efficiency, when vulcanization is carried out through the open mill, some sulfur and accelerator master rubber are easily extruded by accumulation rubber in the open mill to cause rolling-off phenomenon, and powder materials are easily flying to pollute the environment, so that the performance of the rubber materials fluctuates, and meanwhile, the vulcanization state of each open mill is difficult to ensure to be completely consistent, and the rubber materials of the same cycle are easily inhomogeneous. Although the patent CN110744737A improves the phenomenon of loss of vulcanization rolling, the rubber is completely milled in an internal mixer at low temperature of 100-105 ℃, which means that the rotor speed is very slow, the efficiency of powder feeding of rubber material is low, the efficiency of milling is low, and the powder which is not completely fed is remained in a screw extruder, so that the material of each car has non-uniformity. In patent CN111195994A, rubber is discharged after shearing rubber mixing by repeatedly changing roller distance, rubber accumulation amount and variable speed, so that the problem of loss of vulcanization rolling can be solved, but rubber mixing time of an open mill is too long, rubber performance is reduced due to over-mixing easily, requirements on a mixer device are extremely high, and equipment investment is large. The thin-pass is the most effective dispersing means in the rubber mixing process, and the traditional thin-pass is carried out on an open mill manually, so that the labor intensity is high and the efficiency is low.
Disclosure of Invention
The rubber mixing process system and the method provided by the invention have the advantages that the dispersion rate of the compounding agent is effectively improved, the thin-pass labor intensity is reduced, the circulating rubber mixing is formed through multiple low-temperature thin-passes, the rubber mixing time of the rubber raw material and the compounding agent in the internal mixer can be effectively reduced, the production efficiency is improved, the requirement on open mill equipment is low, the energy consumption is low, the investment is low, the thin-pass labor intensity is effectively reduced, and the automation level of a rubber mixing production line is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
rubber mixing process system, including the banbury mixer, to throwing the system of throwing of rubber crude rubber in the banbury mixer, to throwing the compounding agent feeder of compounding agent in the banbury mixer, with the bin outlet butt joint of banbury mixer be used for turning over the cooling mill of glue cooling and be used for the preforming to receive the shaping of gluing and receive the system, its characterized in that: the automatic thin-passing device for carrying out low-temperature thin-passing on the rubber materials for multiple times is arranged between the cooling open mill and the molding rubber receiving system, and the rubber materials are conducted between the cooling open mill and the automatic thin-passing device and between the automatic thin-passing device and the molding rubber receiving system through the conveying belts.
Preferably, the automatic thin-pass device comprises an open mill, a strong cooling device for strongly cooling the rubber material by injecting low-temperature cooling water into a cooling pipeline of the open mill, and a rubber material conduction mechanism for conducting the rubber material and enabling the conduction direction to be variable, wherein the open mill, the strong cooling device and the rubber material conduction mechanism are automatically controlled by a control system, the rubber material conduction mechanism is erected between a discharge opening and a feed opening of the open mill, the rubber material is guided into a molding rubber receiving system along with the change of the conduction direction of the rubber material conduction mechanism, the cooling open mill conducts the rubber material to the open mill through a conveyor belt, and scrapers for scraping the rubber material from a roller are arranged below a roller in the open mill.
Preferably, the rubber material conduction mechanism comprises a lower conveying belt in butt joint with a discharge port of the open mill, a turning conveying belt which is controlled by an automatic telescopic rod piece to turn, and an upper conveying belt which guides the rubber material into a feeding port of the open mill, wherein the discharge end of the turning conveying belt is in lap joint with the feeding end of the upper conveying belt and is in butt joint with the feeding port of the molding rubber receiving system through the turning lap joint.
Preferably, the turning angle of the turning conveyer belt is more than or equal to degree, the conveying length sum of the lower conveyer belt, the turning conveyer belt and the lower conveyer belt is not less than 5m, and the roller distance in the open mill is 0.1mm-0.4 mm.
Preferably, the molding glue receiving system comprises a molding open mill for receiving the glue material guided out by the automatic thin-passing device, a cooling system for cooling the formed glue material and a glue receiving system for receiving the glue material, the molding open mill is connected with the cooling system through a conveyor belt, and the glue receiving system is butted with a discharge hole of the cooling system.
The rubber mixing process method adopting the rubber mixing process system is characterized by comprising the following steps of:
the first step is as follows: respectively putting raw rubber and compounding agents except sulfur into an internal mixer and mixing at low temperature in the internal mixer to prepare a first-stage rubber;
the second step is that: adding sulfur into the internal mixer for continuous mixing to prepare final mixed rubber;
the third step: discharging the final rubber compound into a cooling open mill for automatic rubber turning, cooling and cooling;
the fourth step: guiding the rubber material into an automatic thin passing device for multiple low-temperature thin passing;
the fifth step: and guiding the rubber material to a forming rubber collecting system for tabletting and collecting rubber to finish rubber mixing.
Preferably, the rubber mixing temperature of the internal mixer in the first step is 115-130 ℃, the rubber mixing time is 180-360 s, the rubber mixing temperature of the internal mixer in the second step is 90-100 ℃, and the rubber mixing time is 60-90 s.
Preferably, the strong cooling device injects low-temperature cooling water into a cooling pipeline of the open mill, wherein the low-temperature cooling water does not exceed 12 ℃, and the temperature of a roller in the open mill is not higher than 30 ℃.
Preferably, the thin passing time of the open mill is the sum of the rubber mixing time of the internal mixer and the rubber turning time of the cooling open mill.
Preferably, the fourth step specifically means: according to the temperature of low-temperature cooling water in the sizing material performance adjustment, the roller temperature of an open mill, the distance between a scraper and a roller in the open mill and the automatic thin-passing time of the open mill, sizing materials are circularly and repeatedly put into the open mill for low-temperature thin-passing through by a sizing material conduction mechanism, and when the automatic thin-passing time of the open mill is reached, a conveying belt is automatically turned and lapped to the conveying belt butted with a material inlet of a molding rubber receiving system.
The invention has the beneficial effects that:
1. according to the rubber mixing process system, the automatic thin-pass device is arranged between the cooling open mill and the molding rubber collecting system, rubber raw materials and compounding agents are prepared into final mixed rubber in the internal mixer, the final mixed rubber is turned by the cooling open mill and is self-cooled and then is guided into the automatic thin-pass device, the automatic thin-pass device conducts multiple low-temperature thin-pass on the final mixed rubber, the thin-pass temperature is reduced, the thin-pass shearing force is improved, the thin-pass effect is improved, the dispersion rate of the compounding agents is effectively improved, the thin-pass labor intensity is effectively reduced, circulating rubber mixing is formed through multiple low-temperature thin-pass, the rubber mixing time of the rubber raw materials and the compounding agents in the internal mixer can be effectively reduced, and the production efficiency is improved.
2. The automatic thin-passing device is characterized in that a mill is used for thin-passing, a strong cooling device is used for injecting low-temperature cooling water into the mill to adjust the temperature of a roller in the mill, the thin-passing temperature is lower than that of a greenhouse, the thin-passing shearing force is improved to improve the thin-passing effect, a rubber material conduction mechanism is used for automatically guiding rubber when rubber material is in thin-passing, the rubber material is enabled to be circularly and thinly passed for multiple times, and the rubber material is guided to a forming rubber receiving system through turning after the thin-passing is completed, the automatic circulation of the thin-passing and the automatic circulation of a rubber mixing process are achieved, the number of the circulating thin-passing is adjusted in real time according to the rubber material characteristics after the single thin-passing, the rubber material characteristics are guaranteed, the reliability of the rubber mixing process is improved, the equipment structure is simple, the requirements on the mill equipment are low, the energy consumption is low, the investment is low, the labor intensity of the thin-passing is effectively reduced, the automation level of a rubber mixing production line is improved, and unmanned operation is achieved.
3. According to the rubber mixing process method, the rubber mixing temperature is gradually reduced from the first step to the fourth step, the final rubber is turned and naturally cooled in the cooling open mill, then the final rubber is led into the automatic thin-passing device for multiple circulation thin-passing of rubber, the cooling water temperature, the roller temperature of the open mill, the distance between a scraper and a roller in the open mill and the automatic thin-passing time of the open mill are adjusted according to the performance of the rubber, the thin-passing temperature is lower than the temperature, the thin-passing shearing force is improved, the thin-passing efficiency is improved, the technical problems that the thin-passing difficulty is high in the traditional rubber mixing process, the requirement on equipment is high, the rubber mixing time is not easy to master, and the rubber characteristics are influenced are solved, the thin-passing labor intensity is effectively reduced, the rubber characteristics are guaranteed, and the reliability of the rubber mixing process is improved.
Drawings
FIG. 1 is a schematic diagram of a rubber mixing process system.
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1.
Rubber mixing process system, including banbury mixer 1, to throwing the feeding system 2 of rubber crude rubber in banbury mixer 1, to throwing the compounding agent feeder 3 of compounding agent in banbury mixer 1, with the bin outlet butt joint of banbury mixer 1 be used for turning over the refrigerated cooling mill 4 of glue and be used for the preforming to receive the shaping of gluing and receive gluey system 5, its characterized in that: and an automatic thin-passing device 6 for carrying out low-temperature thin-passing on the sizing material for multiple times is arranged between the cooling open mill 4 and the molding glue collecting system 5, and the sizing material is conducted between the cooling open mill 4 and the automatic thin-passing device 6 and between the automatic thin-passing device 6 and the molding glue collecting system 5 through conveyor belts.
The rubber mixing process system is characterized in that an automatic thin-pass device 6 is arranged between a cooling open mill 4 and a forming rubber collecting system 5, rubber raw materials and compounding ingredients are prepared into final mixed rubber in an internal mixer 1, the cooling open mill 4 turns the final mixed rubber to be self-cooled and then enters the automatic thin-pass device 6, the automatic thin-pass device 6 conducts multiple low-temperature thin-pass on the final mixed rubber, the thin-pass temperature is reduced, the thin-pass shearing force is improved to improve the thin-pass effect, the dispersion rate of the compounding ingredients is effectively improved, the thin-pass labor intensity is effectively reduced, circulating rubber mixing is formed through multiple low-temperature thin-pass, the rubber mixing time of the rubber raw materials and the compounding ingredients in the internal mixer can be effectively reduced, and the production efficiency is improved.
The automatic thin-pass device 6 comprises an open mill 61, a strong cooling device 62 for injecting low-temperature cooling water into a cooling pipeline of the open mill 61 to perform strong cooling and a rubber material conducting mechanism 63 for conducting rubber materials and having a variable conducting direction, wherein the open mill 61, the strong cooling device 62 and the rubber material conducting mechanism 63 are automatically controlled by a control system, the rubber material conducting mechanism 63 is erected between a discharge opening and a feed opening of the open mill 61, the rubber materials are guided into the molding rubber receiving system 5 along with the change of the conducting direction of the rubber material conducting mechanism 63, the cooling open mill 4 conducts the rubber materials to the open mill 61 through a conveying belt, and scrapers for scraping the rubber materials from a roller are arranged below the roller in the open mill 61. The open mill 61 is used for thin passing, the strong cooling device 62 is used for injecting low-temperature cooling water into the open mill to adjust the temperature of a roller in the open mill 61, the thin passing temperature is lower than that of a greenhouse, the thin passing shearing force is improved to improve the thin passing effect, the rubber material conduction mechanism 63 is used for automatically guiding rubber when rubber material is in thin passing, rubber material is enabled to be circularly and thinly passed for multiple times and is guided to a forming rubber receiving system through turning after the thin passing is completed, automatic circulation of the thin passing and automatic circulation of a rubber mixing process are achieved, the number of the circular thin passing is adjusted in real time according to the rubber material characteristics after single thin passing, the rubber material characteristics are guaranteed, the reliability of a rubber mixing process is improved, the equipment structure is simple, the requirement on open mill equipment is low, the energy consumption is low, the investment is low, the thin passing labor intensity is effectively reduced, and the automation level of a rubber mixing production line is improved. Scrapers for scraping rubber materials from the roller are arranged below the roller in the mixing mill 61, the rubber materials adhered to the roller after being thin-passed are scraped, the scraped rubber materials are guided to the upper side of the open mill through a rubber material conduction mechanism 63, preparation is conducted for the next thin-passing, and rubber material accumulation is avoided.
The rubber material conducting mechanism 63 comprises a lower conveying belt 631 butted with a discharge port of the open mill 61, a turning conveying belt 632 controlled by an automatic telescopic rod and an upper conveying belt 633 for guiding rubber materials into a feeding port of the open mill 61, wherein the discharge end of the turning conveying belt 632 is lapped with the feeding end of the upper conveying belt 633 and is connected with a conveying belt butted with the feeding port of the molding rubber receiving system 5 through turning lapping. As shown in the figure, the direction of the variable direction conveying belt 632 is changed by the stretching of the automatic telescopic rod, the automatic telescopic rod can be a pneumatic telescopic rod or a hydraulic telescopic rod, the direction changing conveying belt 632 changes direction by the stretching of the automatic telescopic rod, the direction changing conveying belt 632 rotates to an initial position by the retracting of the automatic telescopic rod, the starting time of the automatic telescopic rod is set according to the thin passing time set by the open mill 61 in the actual use process, the automatic telescopic rod moves to enable the direction changing conveying belt 632 to automatically change direction and overlap to the conveying belt 7 butted with the material inlet of the molding glue receiving system when the automatic thin passing time of the open mill is reached, and the glue discharged from the open mill 61 is guided into the molding glue receiving system through the lower conveying belt 631, the direction changing conveying belt 632 and the conveying belt 7 to perform molding glue receiving.
The turning angle of the turning conveyor belt 632 is greater than or equal to 90 degrees, that is, the turning conveyor belt 632 can be lapped with the feeding end of the upper conveyor belt 633 before turning, rubber can be effectively introduced into the upper conveyor belt 633, the turning conveyor belt 632 can also be lapped with the conveyor belt 7 after turning, the rubber can be effectively introduced into the molding rubber collecting system 5, and in order to ensure that the turning conveyor belt 632 for effective conveying of the rubber is horizontally turned, that is, the horizontal conveying direction of the rubber is changed; the total conveying length of the lower conveying belt 631, the diversion conveying belt 632 and the lower conveying belt 633 is not less than 5m, the rubber material discharge amount is increased, rubber material accumulation in the open mill 61 is reduced, the phenomenon that part of rubber material cannot enter the open mill for passing after being coiled due to excessive accumulation of rubber material in the open mill 61 caused by too short conveying belt length is avoided, and the rate of passing of the rubber material is improved; the roller spacing of the rollers in the open mill 61 is 0.1mm-0.4mm, so that the thin-passing effect is ensured, and the dispersion rate of the compounding agents is improved.
The forming glue receiving system 5 comprises a forming open mill 51 for receiving the glue material led out by the automatic thin-passing device 6, a cooling system 52 for cooling the formed glue material and a glue receiving system 53 for receiving the glue material, wherein the forming open mill 51 is connected with the cooling system 52 through a conveyor belt, the glue receiving system 53 is in butt joint with a discharge hole of the cooling system 52, and the process flow from the forming of the glue material to the cooling to the glue receiving is completed.
The invention also provides a rubber mixing process method adopting the rubber mixing process system, which is characterized by comprising the following steps of:
the first step is as follows: respectively putting raw rubber and compounding agents except sulfur into an internal mixer 1, and carrying out low-temperature mixing in the internal mixer 1 to prepare a first-stage rubber;
the second step is that: adding sulfur into the internal mixer 1 to continuously mix to prepare final mixed rubber;
the third step: discharging the final rubber compound into a cooling open mill 4 for automatic rubber turning, cooling and cooling;
the fourth step: guiding the rubber material to an automatic thin passing device 6 for multiple low-temperature thin passing;
the fifth step: and guiding the rubber material to a forming rubber collecting system 5 for tabletting and rubber collecting to finish rubber mixing.
According to the rubber mixing process method, the rubber mixing temperature is gradually reduced from the first step to the fourth step, the final rubber is turned in the cooling open mill and naturally cooled, then the final rubber is led into the automatic thin-passing device for multiple circulation thin-passing of rubber, the thin-passing temperature is lower than the temperature, the thin-passing shearing force is improved, the thin-passing efficiency is improved, the technical problems that the thin-passing difficulty is high, the requirement on equipment is high, the rubber mixing time is not easy to master, and the rubber characteristics are influenced in the traditional rubber mixing process are solved, the thin-passing labor intensity is effectively reduced, the rubber characteristics are guaranteed, and the reliability of the rubber mixing process is improved.
Wherein the rubber mixing temperature of the internal mixer 1 in the first step is 115-130 ℃, the rubber mixing time is 180-360 s, the rubber mixing temperature of the internal mixer 1 in the second step is 90-100 ℃, and the rubber mixing time is 60-90 s. The rubber material has short rubber mixing time in the internal mixer 1, low energy consumption and higher efficiency of preparing final rubber mixing.
Wherein, the low-temperature cooling water injected into the cooling pipeline of the open mill 61 by the strong cooling device 62 is not more than 12 ℃, so that the roller temperature in the open mill 61 is not higher than 30 ℃. The temperature of the low-temperature cooling water injected into the cooling pipeline of the open mill 61 by the strong cooling device 62 is far lower than that of a greenhouse, the heat of sizing materials can be effectively absorbed, the temperature of the roller in the open mill 61 is reduced, and the temperature of the roller is adjusted by adjusting the temperature of the low-temperature cooling water, so that the thin-passing temperature is adjusted, and the thin-passing shearing force is improved to improve the thin-passing effect.
Wherein the thin passing time of the open mill 61 is the sum of the rubber mixing time of the internal mixer 1 and the rubber turning time of the cooling open mill 4. The thin passing time of the open mill 61 is longer than the rubber mixing time of the internal mixer 1 and the rubber turning time of the cooling open mill 4, so that the thin passing times are ensured to be multiple times, the rubber mixing time of the internal mixer is effectively reduced, and the efficiency is improved.
Wherein, the fourth step specifically means: the rotating speed of the open mill 61, the roller distance, the transmission speed of the rubber material transmission mechanism 63, the temperature of low-temperature cooling water injected into the open mill 61 by the forced cooling device 62, the roller temperature of the open mill 61, the distance between a scraper and a roller in the open mill 61 and the automatic thin-passing time of the open mill 61 are adjusted according to the rubber material performance, the rubber material is circularly and repeatedly thrown into the open mill 61 by the rubber material transmission mechanism 63 for low-temperature thin-passing, and when the automatic thin-passing time of the open mill 61 is reached, the direction-changing conveying belt 632 is automatically changed in direction and lapped to a conveying belt butted with a material inlet of the molding rubber receiving system 5. The cooling water temperature, the roller temperature of the open mill, the distance between a scraper and the roller in the open mill and the automatic thin passing time of the open mill are adjusted according to the performance of the rubber material, so that the thin passing temperature is lower than the temperature, the thin passing shearing force is improved, the thin passing efficiency is improved, the technical problems that the thin passing difficulty is high in the traditional rubber mixing process, the requirement on equipment is high, the rubber mixing time is not easy to master and the rubber material characteristic is influenced are solved, the thin passing labor intensity is effectively reduced, the rubber material characteristic is ensured, and the reliability of the rubber mixing process is improved.
The technical solutions of the embodiments of the present invention are fully described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (10)
1. Rubber mixing process system, including banbury mixer (1), to throwing feeding system (2) of rubber crude rubber in banbury mixer (1), to throwing compounding agent batch feeder (3) of compounding agent in banbury mixer (1), with the bin outlet butt joint of banbury mixer (1) be used for turning over gluey refrigerated cooling mill (4) and be used for the preforming to receive gluey shaping receipts system (5), its characterized in that: the automatic thin-passing device (6) for carrying out low-temperature thin-passing on the rubber materials for multiple times is arranged between the cooling open mill (4) and the molding rubber collecting system (5), and the rubber materials are conducted through the conveyor belt between the cooling open mill (4) and the automatic thin-passing device (6) and between the automatic thin-passing device (6) and the molding rubber collecting system (5).
2. A rubber mixing process system according to claim 1, characterized in that: automatic thin device (6) including mill (61), to the cooling conduit of mill (61) pour into low cooling water and carry out powerful refrigerated strong cooling device (62) and be used for conducting the changeable sizing material conduction mechanism (63) of sizing material and direction of conduction into, mill (61), strong cooling device (62) and sizing material conduction mechanism (63) are through control system automatic control, sizing material conduction mechanism (63) erect between the bin outlet and the pan feeding mouth of mill (61), the sizing material is along with sizing material conduction mechanism (63) direction of conduction change and leading-in shaping receipts gluey system (5) in, cooling mill (4) are through the conveyer belt to mill (61) conduction sizing material, the below of roller all sets up the scraper that is used for scraping the sizing material from the roller in mill (61).
3. A rubber mixing process system according to claim 2, characterized in that: the rubber material conduction mechanism (63) comprises a lower conveying belt (631) in butt joint with a discharge port of the open mill (61), a turning conveying belt (632) which is controlled by an automatic telescopic rod piece to turn and an upper conveying belt (633) which guides rubber material into a feeding port of the open mill (61), wherein the discharge end of the turning conveying belt (632) is in lap joint with the feeding end of the upper conveying belt (633), and the conveying belt is in butt joint with the feeding port of the rubber receiving system (5) through turning lap joint and forming.
4. A rubber mixing process system according to claim 3, characterized in that: the turning angle of the turning conveyer belt (632) is more than or equal to 90 degrees, the conveying length sum of the lower conveyer belt (631), the turning conveyer belt (632) and the lower conveyer belt (633) is not less than 5m, and the roller distance in the open mill (61) is 0.1mm-0.4 mm.
5. A rubber mixing process system according to claim 3, characterized in that: the molding glue collecting system (5) comprises a molding open mill (51) for receiving glue materials led out by the automatic thin-pass device (6), a cooling system (52) for cooling the glue materials after molding and a glue collecting system (53) for collecting the glue materials, the molding open mill (51) is connected with the cooling system (52) through a conveyor belt, and the glue collecting system (53) is butted with a discharge hole of the cooling system (52).
6. A rubber mixing process method using the rubber mixing process system of any one of claims 1 to 5, characterized by comprising the steps of:
the first step is as follows: respectively putting raw rubber and compounding agents except sulfur into an internal mixer (1) and mixing in the internal mixer (1) at low temperature to prepare a first-stage rubber;
the second step is that: adding sulfur into the internal mixer (1) to continuously mix to prepare final mixed rubber;
the third step: discharging the final rubber compound into a cooling open mill (4) for automatic rubber turning, cooling and cooling;
the fourth step: guiding the rubber material to an automatic thin passing device (6) for multiple low-temperature thin passing;
the fifth step: and (3) guiding the rubber material to a forming rubber collecting system (5) for tabletting and rubber collecting to finish rubber mixing.
7. A rubber mixing process as claimed in claim 6, characterized in that: the rubber mixing temperature of the internal mixer (1) in the first step is 115-130 ℃, the rubber mixing time is 180-360 s, the rubber mixing temperature of the internal mixer (1) in the second step is 90-100 ℃, and the rubber mixing time is 60-90 s.
8. A rubber mixing process as claimed in claim 6, characterized in that: the strong cooling device (62) injects low-temperature cooling water into a cooling pipeline of the open mill (61) to ensure that the temperature of a roller in the open mill (61) is not higher than 30 ℃.
9. A rubber mixing process as claimed in claim 6, characterized in that: the thin passing time of the open mill (61) is the sum of the rubber mixing time of the internal mixer (1) and the rubber turning time of the cooling open mill (4).
10. A rubber mixing process as claimed in claim 6, characterized in that: the fourth step specifically includes: the rotating speed of the open mill (61), the roller spacing, the transmission speed of the rubber material transmission mechanism (63), the temperature of low-temperature cooling water injected into the open mill (61) by the strong cooling device (62), the roller temperature of the open mill (61), the spacing between a scraper and a roller in the open mill (61) and the automatic thin-passing time of the open mill (61) are adjusted according to the performance of the rubber material, the rubber material is circularly and repeatedly put into the open mill (61) by the rubber material transmission mechanism (63) for low-temperature thin-passing, and the rubber material is automatically turned and lapped on a conveying belt (632) which is butted with a feeding port of the molding rubber receiving system (5) when the automatic thin-passing time of the open mill (61) is reached.
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| CN102219947A (en) * | 2011-04-25 | 2011-10-19 | 山东鲁燕色母粒有限公司 | Method for preparing colored rubber sheet for rubber |
| US20130116360A1 (en) * | 2011-10-19 | 2013-05-09 | Bridgestone Corporation | Mixing of telechelic rubber formulations |
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