阅读说明：本技术 一种橡胶颗粒、自动化生产方法及系统 (Rubber particle, automatic production method and system ) 是由 赵誉 于 2020-12-23 设计创作，主要内容包括：本发明涉及橡胶颗粒生产领域,提供一种橡胶颗粒、自动化生产方法及系统,用于解决橡胶颗粒生产自动化程度低的问题。本发明提供的橡胶颗粒,包括：EPDM 5～35%,填料30～70%,油料5～25%,活性剂1～3%,硫化剂1～3%,助剂2～5%。采用全自动连续化生产装置,在传统的基础上,集自动称量、连续挤出、连续硫化、自动冷却和自动传送、自动封包和码垛,一步完成产品制备和包装。(The invention relates to the field of rubber particle production, and provides rubber particles, an automatic production method and an automatic production system, which are used for solving the problem of low automation degree of rubber particle production. The invention provides rubber particles comprising: 5-35% of EPDM (ethylene-propylene-diene monomer), 30-70% of filler, 5-25% of oil, 1-3% of activator, 1-3% of vulcanizing agent and 2-5% of auxiliary agent. A full-automatic continuous production device is adopted, and on the basis of the traditional technology, the automatic weighing, continuous extrusion, continuous vulcanization, automatic cooling and automatic transmission, automatic packaging and stacking are integrated, and the product preparation and packaging are completed in one step.)

1. Rubber particles, characterized in that it comprises:

5-35% of EPDM (ethylene-propylene-diene monomer), 30-70% of filler, 5-25% of oil, 1-3% of activator, 1-3% of vulcanizing agent and 2-5% of auxiliary agent.

2. An automated production system of rubber granules, comprising:

the mixing device is connected with the first conveying device;

the extruding device comprises at least two extruders, wherein one extruder is connected with the first conveying device, and the other extruder is connected with the second conveying device;

the vulcanizing device is connected with the second conveying device, and the vulcanizing device is connected with a third conveying device;

the crushing device is connected with the third conveying device;

and the cooling device is connected with the crushing device.

3. A rubber pellet as claimed in claim 2, wherein the mixing means is connected to a feeding means, the feeding means comprising:

the material taking module is connected with the material storage device;

the metering scales are connected with the material taking module, and at least one metering scale is arranged;

and the feeding module is connected with the metering scale and the mixing device.

4. The rubber pellet of claim 2 further comprising an encapsulation device, the encapsulation device comprising:

the bag sealing machine is connected with the cooling device and packs the material cooled by the cooling device;

and the stacking module is connected with the bag sealing machine and stacks the packaged materials into a stack.

5. The rubber pellet of claim 2 wherein the extrusion device comprises:

a first extruder connected to the first conveyor;

and the second extruder is connected with the first extruder, and the second extruder is connected with a second conveying device.

6. The rubber pellet of claim 2 wherein the temperature at the ends of the tunnel of the vulcanization unit is less than the intermediate temperature.

7. An automated method for producing rubber granules, comprising:

mixing the raw materials to obtain a mixture;

performing first extrusion on the mixture, and then performing second extrusion to obtain a sheet;

and vulcanizing the sheet, crushing and cooling to obtain the rubber particles.

8. The automatic production method of rubber particles as claimed in claim 7, wherein in the mixing process, the rotation speed is 5-50r/min, the bolt pushing pressure is 0.5-0.8 MPa, the rubber discharging temperature is below 120 ℃, and the mixing time is 5-8 min.

9. The method for automatically producing rubber particles according to claim 7, wherein the extrusion speed is 4.0 to 8.0m/min and the head and barrel temperature is 30 to 80 ℃ during the extrusion.

10. The rubber particles as claimed in claim 7, wherein the temperature of the material moving in the vulcanization process is 4.0-8.0m/min at 200-220 ℃ in the I zone, 220-250 ℃ in the II zone, 220-250 ℃ in the III zone, 200-220 ℃ in the IV zone, 180-220 ℃ in the V zone.

Technical Field

The invention relates to the field of rubber particle production, in particular to rubber particles, and an automatic production method and system.

Background

Since the twenty-first century, the national economy has been rapidly developed, all walks have been rapidly developed, the sports industry has been vigorously raised, various rubbers have been widely used in sports facilities, track and field grounds, football fields, primary and secondary school runways, fitness venues, outdoor fitness facilities and the like are made into various professional runways and grounds by using a large amount of rubber particles, and the hot tide of the whole body building also puts new requirements on the grounds of various sports venues and facilities. The prior particles made of recycled rubber such as shoe materials, tires and the like can not meet the performance and use requirements, various high-performance rubber particles are increasingly necessary for the market, and the EPDM rubber particles have good aging resistance, yellowing resistance, good elasticity, bright color, can be designed into different particle sizes and shapes, have relatively low price and are widely applied.

At present, the production of rubber particles in China mainly adopts a mode of multi-step and intermittent production, wherein a vulcanizing tank is used for vulcanizing after an internal mixer is used for mixing, then crushing and screening are carried out, and manual or semi-automatic equipment is used for packaging. In addition, the rubber material is mixed and then enters a drying tunnel for vulcanization, and then is subjected to an intermittent production mode of crushing, packaging and the like, so that full-continuous production cannot be performed.

Disclosure of Invention

The invention solves the technical problem of low automation degree of rubber particle production and provides rubber particles.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

rubber particles comprising:

5-35% of EPDM (ethylene-propylene-diene monomer), 30-70% of filler, 5-25% of oil, 1-3% of activator, 1-3% of vulcanizing agent and 2-5% of auxiliary agent.

EPDM is mixed with filler, oil, etc. to make rubber particles.

Rubber particles within the range are more suitable for automatic production, and the quality of the final particles is more stable.

An automated rubber pellet production system comprising:

the mixing device is connected with the first conveying device;

the extruding device comprises at least two extruders, wherein one extruder is connected with the first conveying device, and the other extruder is connected with the second conveying device;

the vulcanizing device is connected with the second conveying device, and the vulcanizing device is connected with a third conveying device;

the crushing device is connected with the third conveying device;

and the cooling device is connected with the crushing device.

Two extruders are adopted to replace an open mill, the extruders can directly receive the mixed materials mixed by the mixing roll, the mixed grains are further mixed by the first extrusion, the mixed grains are further mixed by the second extrusion, the mixed grains are crushed and cooled after vulcanization, and the rubber particles are obtained. The whole course of particle production can adopt a conveying device (a conveying belt) to convey materials, and the automation level of particle production is greatly improved.

Preferably, the mixing device is connected with a feeding device, and the feeding device comprises:

the material taking module is connected with the material storage device;

the metering scales are connected with the material taking module, and at least one metering scale is arranged;

and the feeding module is connected with the metering scale and the mixing device. The material taking device takes materials, the materials are weighed by the weigher, and the raw materials are conveyed to the mixing device by the feeding module according to a preset weight ratio.

Preferably, the device further comprises a packaging device, and the packaging device comprises:

the bag sealing machine is connected with the cooling device and packs the material cooled by the cooling device;

and the stacking module is connected with the bag sealing machine and stacks the packaged materials into a stack. The material encapsulation is packed to the bale sealing machine, and the material that the module of piling up will encapsulate piles up, and the material can be directly carried the bale sealing machine by the conveyer belt, and the material after the packing can be piled up by robot (hand).

Preferably, the extrusion apparatus comprises:

a first extruder connected to the first conveyor;

and the second extruder is connected with the first extruder, and the second extruder is connected with a second conveying device.

Preferably, the temperature at the two ends of the drying tunnel of the vulcanizing device is lower than the middle temperature. The risk of product color difference can be reduced.

An automated method of producing rubber granules, comprising:

mixing the raw materials to obtain a mixture;

performing first extrusion on the mixture, and then performing second extrusion to obtain a sheet;

and vulcanizing the sheet, crushing and cooling to obtain the rubber particles.

Preferably, in the mixing process, the rotating speed is 5-50r/min, the bolt pushing pressure is 0.5-0.8 MPa, the rubber discharging temperature is below 120 ℃, and the mixing is carried out for 5-8 min. The parameters of the mixing process are adjusted, so that the possibility of reducing manual intervention in the subsequent processing process is provided.

Preferably, the extrusion speed is 4.0-8.0m/min and the temperature of a machine head and a cylinder is 30-80 ℃ in the extrusion process. The parameters of the extrusion process are optimized, continuous production is realized, and sheets are continuously produced.

Preferably, in the vulcanization process, the temperature of the material is 4.0-8.0m/min in the I area, 220-250 ℃ in the II area, 220-250 ℃ in the III area, 200-220 ℃ in the IV area, 180-220 ℃ in the V area. The temperature at the two ends is lower than the middle temperature, so that the color difference of the product is ensured.

Compared with the prior art, the invention has the beneficial effects that: a full-automatic continuous production device is adopted, and on the basis of the traditional technology, the automatic weighing, continuous extrusion, continuous vulcanization, automatic cooling and automatic transmission, automatic packaging and stacking are integrated, and the product preparation and packaging are completed in one step.

The invention can save energy by more than 30% and save about 50% of people. High product yield, low energy consumption, stable quality and environmental protection. Meanwhile, a large amount of intermediate product storage space is effectively reduced.

Drawings

FIG. 1 is a schematic diagram of an automated rubber particle production system.

FIG. 2 is a schematic diagram of an automated process for producing rubber particles.

Detailed Description

The following examples are further illustrative of the present invention and are not intended to be limiting thereof.

A rubber particle, in some embodiments of the present application, comprising:

5-35% of EPDM (ethylene-propylene-diene monomer), 30-70% of filler, 5-25% of oil, 1-3% of activator, 1-3% of vulcanizing agent and 2-5% of auxiliary agent.

EPDM is mixed with filler, oil, etc. to make rubber particles.

Rubber particles within the range are more suitable for automatic production, and the quality of the final particles is more stable.

In some embodiments of the present application, the rubber composition includes 30-35% of EPDM, 50-70% of filler, 13-25% of oil, 2-3% of activator, 2-3% of vulcanizing agent, and 3-5% of auxiliary agent.

In some embodiments of the present application, EPDM 30%, filler 50%, oil 13%, activator 2%, curative 2%, adjuvant 3%

An automated rubber particle production system, in some embodiments of the present application, comprising:

the mixing device is connected with the first conveying device;

the extruding device comprises at least two extruders, wherein one extruder is connected with the first conveying device, and the other extruder is connected with the second conveying device;

the vulcanizing device is connected with the second conveying device, and the vulcanizing device is connected with a third conveying device;

the crushing device is connected with the third conveying device;

and the cooling device is connected with the crushing device.

Two extruders are adopted to replace an open mill, the extruders can directly receive the mixed materials mixed by the mixing roll, the mixed grains are further mixed by the first extrusion, the mixed grains are further mixed by the second extrusion, the mixed grains are crushed and cooled after vulcanization, and the rubber particles are obtained.

In some embodiments of the present application, the mixing apparatus is connected to a feeding apparatus, the feeding apparatus comprising:

the material taking module is connected with the material storage device;

the metering scales are connected with the material taking module, and at least one metering scale is arranged;

and the feeding module is connected with the metering scale and the mixing device.

In some embodiments of the present application, the storage device includes a liquid storage module, a pulverized material storage module, and a bulk material storage module.

In some embodiments of the present application, the material fetching module 1 is connected to the bulk material storage module, the material fetching module 2 is connected to the powder storage module, and the material fetching module 3 is connected to the powder storage module.

In some embodiments of the present application, the metering scale comprises a belt scale, a powder scale, and an oil scale. The belt weigher is used for weighing the blocky materials transferred from the blocky material storage module, the powder weigher is used for weighing the powdery materials transferred from the powder storage module, and the oil weigher is used for weighing the oil transferred from the liquid storage module.

In some embodiments of the present application, the liquid storage module comprises a plurality of storage tanks, the storage tanks being installed underground.

In winter, the temperature is low, the viscosity of the oil is high, and the oil is easy to agglomerate. Different from the traditional oil storage tank installed at high altitude, the underground oil storage tank has the advantages of large capacity, no occupied space, heat preservation by utilizing terrestrial heat, safety and elimination of the safety threat of common open fire to the oil tank.

In some embodiments of the present application, the mixing apparatus is an internal mixer.

In some embodiments of the present application, the rotation speed of the internal mixer is 5 to 50r/min, the plug pressure is 0.5 to 0.8MPa, the rubber discharge temperature is below 120 ℃, and the mixing time is 5 to 8 min.

And the shearing force generated by the rotor of the internal mixer extrudes and shears various materials related to the formula to finally form uniformly dispersed agglomerates.

In some embodiments of the present application, the extrusion apparatus comprises:

a first extruder connected to the first conveyor;

and the second extruder is connected with the first extruder, and the second extruder is connected with a second conveying device.

In some embodiments of the present application, the first extruder is a hot-feed extruder.

In some embodiments of the present application, the second extruder is a cold feed extruder.

In some embodiments of the present application, the extruder has an extrusion speed of 4.0 to 8.0m/min and a head and barrel temperature of 30 to 80 ℃.

In some embodiments of the present application, two counter-rotating cams are provided in the first extruder.

The rubber material discharged from the internal mixer is further mixed, and then the rubber material is forcibly pressed into a screw of the extruder for extrusion, so that the problem that part of the rubber material with high hardness is difficult to pass through the extruder is avoided.

In some embodiments of the present application, the second extruder has a larger length to diameter ratio than the first extruder.

And the rubber material is further mixed and molded by adopting a high length-diameter ratio.

In some embodiments of the present application, the temperature at both ends of the drying tunnel of the vulcanization device is lower than the intermediate temperature.

In some embodiments of the present application, the drying tunnel of the vulcanizing device is 200 to 220 ℃ in the I region, 220 to 250 ℃ in the II region, 220 to 250 ℃ in the III region, 200 to 220 ℃ in the IV region, and 180 to 220 ℃ in the V region.

And the risk of color difference of the product is reduced.

In some embodiments of the present application, the drying tunnel is heated with natural gas.

The heating speed is faster, and the temperature is more even.

In some embodiments of the present application, the comminution means is connected to a fourth conveyor and the cooling means is connected to the fourth conveyor.

In some embodiments of the application, the export of reducing mechanism is connected with the shale shaker, the space of shale shaker is 1~8 mm.

In some embodiments of the present application, the cooling device is a vibratory cooling tower.

Fully cooling the rubber particles, ensuring the cooling efficiency, avoiding the product agglomeration and saving energy.

In some embodiments of the present application, further comprising an encapsulation device, the encapsulation device comprising:

the bag sealing machine is connected with the cooling device and packs the material cooled by the cooling device;

and the stacking module is connected with the bag sealing machine and stacks the packaged materials into a stack.

The material taking device takes materials, the materials are weighed by the weigher, and the raw materials are conveyed to the mixing device by the feeding module according to a preset weight ratio.

In some embodiments of the present application, the cooling device is connected to a fifth conveyor, which is connected to the bale press.

And conveying the cooled particles to a packaging machine through a fifth conveying device.

In some embodiments of the present application, the packer is connected to a sixth conveyor, and the stacking module is connected to the sixth conveyor.

The material encapsulation is packed to the bale sealing machine, and the material that the module of piling up will encapsulate piles up, and the material can be directly carried the bale sealing machine by the conveyer belt, and the material after the packing can be piled up by robot (hand).

In some embodiments of the present application, the stacking module is a robotic arm.

In some embodiments of the present application, the first to sixth conveyors are conveyor belts.

A method for automated production of rubber particles, in some embodiments of the present application, comprising:

s100, mixing the raw materials to obtain a mixture;

s200, performing first extrusion on the mixture, and then performing second extrusion to obtain a sheet;

s300, vulcanizing the sheet, crushing and cooling to obtain rubber particles.

In some embodiments of the application, in the mixing process, the rotating speed is 5-50r/min, the bolt pushing pressure is 0.5-0.8 MPa, the rubber discharging temperature is below 120 ℃, and the mixing time is 5-8 min.

The parameters of the mixing process are adjusted, so that the possibility of reducing manual intervention in the subsequent processing process is provided.

In some embodiments of the present application, the extruder has an extrusion speed of 4.0 to 8.0m/min and a head and barrel temperature of 30 to 80 ℃.

The parameters of the extrusion process are optimized, continuous production is realized, and sheets are continuously produced.

In some embodiments of the present application, the material moving temperature in the sulfidation process is 4.0-8.0m/min at 220 ℃ in the I region, 220 ℃ in the II region, 250 ℃ in the III region, 220 ℃ in the III region, 200 ℃ in the IV region, and 220 ℃ in the V region, and 180 ℃ in the V region.

The temperature at the two ends is lower than the middle temperature, so that the color difference of the product is ensured.

The above detailed description is specific to possible embodiments of the present invention, and the above embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the present claims.