CN111516184A

CN111516184A - Thermoplastic elastomer material

Info

Publication number: CN111516184A
Application number: CN202010334600.7A
Authority: CN
Inventors: 周旭东; 朱良彬
Original assignee: Mingguang Longshengrui New Material Technology Co ltd
Current assignee: Mingguang Longshengrui New Material Technology Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-08-11

Abstract

The invention relates to the technical field of thermoplastic elastomers, in particular to a thermoplastic elastomer material, wherein an ultrafine grinder used in the production process of the material comprises a base, a grinding unit fixed on the base and a main driving motor fixed on one side of the grinding unit and used for driving the grinding unit to act; the crushing unit comprises a crushing box, a feed hopper, a discharge port, a waste gas collecting pipe and a blanking port; a transverse main rotating shaft is arranged in the crushing box, one end of the main rotating shaft is connected with the output end of a main driving motor, and the main rotating shaft is arranged on two side walls of the crushing box through bearings; a crushing roller is arranged on the main rotating shaft in the crushing box, and a plurality of crushing teeth are uniformly distributed on the outer surface of the crushing roller; a cutting wheel is arranged between the adjacent crushing teeth; the waste rubber particles are smaller by using the ultrafine grinder, the reaction interface of the waste rubber particles in unit weight is improved, the reaction efficiency is further improved, and the performance of the prepared thermoplastic elastomer material is ensured.

Description

Thermoplastic elastomer material

Technical Field

The invention relates to the technical field of thermoplastic elastomers, in particular to a thermoplastic elastomer material.

Background

China belongs to a country with scarce rubber resources, more than 40 percent of synthetic rubber and more than 75 percent of natural rubber in China depend on import, meanwhile, China is also a country with the largest waste rubber output in the world, the annual waste rubber composite material is nearly 5000kt, the recycling rate is only about 50 percent, which is not as high as 30 percent of the western countries, and China has many places, and waste rubber is subjected to simple treatment methods such as landfill, incineration and the like or is randomly discarded to cause black pollution. The waste rubber is toxic and harmful solid waste, has strong heat resistance and degradation resistance, and cannot be degraded after being buried underground for 100 years, thereby causing serious environmental pollution and great resource waste. How to do the work of recycling the waste rubber is a problem which needs to be solved urgently from the first major country of rubber consumption to the strong country of rubber resource recycling.

A patent related to a method for processing thermoplastic elastomer material by using waste rubber also appears in the prior art, and a chinese patent with application number 2017104226477 discloses a thermoplastic elastomer material: the method for processing the thermoplastic elastomer material by using the waste rubber has the advantages that on one hand, the waste rubber is recycled and processed into the modified rubber powder, so that the waste resources are well optimized and configured, and the ecological environment is protected, on the other hand, the processed waste rubber powder is taken as a main material and is supplemented with natural plant fibers, such as: the thermoplastic elastomer material prepared from various rubber performance reinforcing agents such as bagasse fiber and yellow horse fiber has good performances of high hardness, high tensile strength, high elongation and high heat resistance, ensures the safety of the thermoplastic elastomer material when being applied to wires and cables, and prolongs the service life of the wires and cables.

However, the problem of large rubber powder particles used in the prior art is not considered in the technical scheme, and the biggest problem of recycling the waste rubber is that the waste rubber becomes a thermosetting material group after vulcanization, the rubber powder particles are large, when the rubber powder particles react with the thermoplastic resin, the thermosetting material group is not easy to react or incompletely reacts, so that the performance of the prepared blend is poor, the rubber powder utilization rate is low, and meanwhile, the reaction interface of the unit weight of the rubber powder particles is small, the interfacial interaction between the waste rubber and the thermoplastic resin is not facilitated, the reaction efficiency is low, and the performance of the blend material is also adversely affected.

The superfine pulverizer is designed for the company, so that waste rubber particles are reduced, the reaction interface of the waste rubber particles in unit weight is improved, the reaction efficiency between the waste rubber and the thermoplastic resin is improved, and the performance of the prepared thermoplastic elastomer material is ensured.

Disclosure of Invention

The invention provides a thermoplastic elastomer material, which aims to make up the defects of the prior art and solve the problem of poor performance of a blend caused by difficult reaction, incomplete reaction and low interface interaction of waste rubber.

The technical scheme adopted by the invention for solving the technical problems is as follows: the thermoplastic elastomer material is prepared by the following steps:

s1, cutting the waste rubber into small blocks, and carrying out ultrasonic cleaning treatment for 3 min; then crushing by an ultrafine crusher, and sieving by a 800-mesh sieve to prepare rubber powder;

s2, adding the polyolefin resin into a mixing device at the temperature of 100-200 ℃ for full melting; taking dialkyl peroxide and rubber powder in S1, mixing and stirring polyolefin resin, rubber powder and dialkyl peroxide uniformly according to the proportion of 50:50:3, adding into mixing equipment, and modifying, wherein the modification temperature is 110 ℃ and the modification temperature is 20min to obtain modified rubber powder;

s3, mixing and stirring the modified rubber powder in the S2, stearic acid and citric acid ester uniformly according to the ratio of 12:3:1, then carrying out microwave treatment for 20min, controlling the temperature at 160 ℃, and cooling to normal temperature to obtain secondary modified rubber powder;

s4, pouring the secondary modified rubber powder in the S3 into an extruder for extrusion, wherein the temperature of the extruder from a conveying area, a melting area, a homogenizing area to an extrusion area is 180 ℃, 165 ℃, 200 ℃ and 140 ℃ respectively; then cooling, granulating and drying to obtain the thermoplastic elastomer material;

through secondary modification, the interfacial interaction between the waste rubber and the thermoplastic resin is improved, the waste rubber and the thermoplastic resin are easier to react, and the prepared thermoplastic elastomer material has excellent physical and mechanical properties which are close to those of the traditional polyolefin thermoplastic elastomer, but the cost is lower.

The superfine pulverizer described in the step S1 comprises a base, a pulverizing unit fixed on the base, and a main drive motor fixed on one side of the pulverizing unit for driving the same; the crushing unit comprises a crushing box, a feed hopper, a discharge port, a waste gas collecting pipe and a blanking port, the crushing box is fixed on the base, the upper end of one side of the crushing box is fixedly provided with the feed hopper and is communicated with the feed hopper through the discharge port, the upper end of the other side of the crushing box is fixedly provided with the waste gas collecting pipe communicated with the crushing box, and the lower end of the crushing box is provided with the discharge port; a transverse main rotating shaft is arranged in the crushing box, one end of the main rotating shaft is connected with the output end of a main driving motor, and the main rotating shaft is arranged on two side walls of the crushing box through bearings; a crushing roller is arranged on the main rotating shaft in the crushing box, and a plurality of crushing teeth are uniformly distributed on the outer surface of the crushing roller; the crushing teeth comprise tooth root parts fixed on the crushing roller, at least two groups of tooth top parts are arranged on the tooth root parts, and the tooth top parts are arranged at intervals along the rotating direction of the crushing roller; be provided with supplementary pivot between the adjacent tooth top, be provided with the supplementary pivot pivoted auxiliary motor of drive on the tooth top, be provided with the cutting wheel on the supplementary pivot and its axis of rotation is perpendicular with the axis of rotation of crushing roller.

When the crushing device is used, waste rubber is added into the crushing box through the feed hopper and the blanking port, the main driving motor is started, the main driving motor drives the crushing roller and the crushing teeth to rotate at a high speed through the main rotating shaft, the tooth tops of the crushing teeth are used for cutting and crushing the waste rubber in one direction, and the crushing effect on the waste rubber with larger volume is better; meanwhile, the auxiliary motor drives the cutting wheel to rotate, the small waste rubber at the part after the crushing teeth are crushed is subjected to secondary cutting, and the cutting direction of the waste rubber is different from that of the crushing teeth, so that a good crushing effect can be realized in single rotation; simultaneously with the cutting wheel set up between adjacent tooth top, also can protect the cutting wheel to make it avoid most impact, increase of service life, reduce cost.

Preferably, an arc-shaped elastic sheet is arranged between the adjacent tooth root parts, two ends of the elastic sheet are fixedly connected with springs, spring seats matched with the springs are arranged on the tooth root parts, and the tooth root parts are connected with the elastic sheets through the spring seats and the springs; when the device is arranged in such a way, a certain distance exists between the adjacent crushing teeth originally, so that part of waste rubber can pass through the position and cannot be crushed during single rotation, and the crushing effect and the crushing efficiency are poor; when the elastic sheets and the springs are arranged between the adjacent crushing teeth, the elastic sheets can rotate in the same direction while the crushing teeth rotate, and the thinner side surface of the elastic sheets can crush the waste rubber passing through the crushing teeth, so that the crushing effect can be obviously improved; meanwhile, the elastic sheet can swing up and down under the action of the impact force of the waste rubber during cutting, arch up in time and stretch out in time, so that the crushing range is changed from a line to a surface, and the crushing effect is further improved; finally, the elastic sheets which swing up and down can also eject the uncut waste rubber on the upper surfaces of the waste rubber, and part of the ejected waste rubber can fly to the adjacent crushing teeth or cutting wheels, so that repeated cutting is realized, and the purpose of making the waste rubber particles smaller is further realized.

Preferably, a crushing shear is arranged on one side of the elastic sheet, which is far away from the crushing roller, two operating handles of the crushing shear are respectively fixed on the elastic sheet, and two blade parts of the crushing shear are closed initially; initially, the blade part of the crushing shears is closed, the blade part can be regarded as a small crushing tooth, waste rubber between adjacent crushing teeth can be crushed, the crushing effect of the crushing teeth is powerfully supplemented, and the crushing effect can be obviously improved; when the elastic sheet is pressed downwards and unfolded, the operating handle and the blade part of the crushing shears are driven to be unfolded outwards, and the waste rubber passing through the position can be bounced outwards to be cut by the adjacent crushing teeth or the adjacent cutting wheel; when the shell fragment rebound when reseing, the blade point portion of broken scissors is closed once more, can cut the old and useless rubber of walking through here, further makes old and useless rubber granule diminish, and the part old and useless rubber that bounces when can also reseing on the shell fragment simultaneously is cuted for most old and useless rubber homoenergetic that the shell fragment bounced away carries out effective breakage, has consequently promoted crushing effect, has improved crushing efficiency.

Preferably, a plurality of auxiliary cutting teeth are sequentially arranged at the cutting edge of the cutting wheel from outside to inside at intervals, and the length of each auxiliary cutting tooth is gradually increased from outside to inside; can carry out the multiple spot cutting to great old and useless rubber, and then improve cutting efficiency, intensive cutting also can make the granule after the old and useless rubber is broken littleer simultaneously, and crushing effect is better.

Preferably, the side surface of the cutting wheel is at least provided with a group of annular grooves, and the side surface and the bottom surface of each annular groove are provided with annular wear-resistant air bags matched with the annular grooves; a sliding block sliding along the inside of the annular groove is arranged in the annular groove, a supporting rod is fixedly arranged on one side, facing the cutting wheel, of the top of each tooth, and the supporting rods are fixedly connected with the sliding blocks; the annular groove, the sliding block and the supporting rod are arranged to provide an auxiliary supporting effect when the cutting wheel is impacted by waste rubber, so that the damage of the cutting wheel caused by overlarge impact is avoided, and the influence of overlarge swing amplitude of the cutting wheel on the cutting effect is also avoided; set up wear-resisting gasbag in the ring channel, on the one hand, when the cutting wheel swung in less within range, the wear-resisting gasbag can be extruded to the slider makes wear-resisting gasbag warp and bulge, its spun air current can blow away the old and useless rubber granule of adhesion on the wear-resisting gasbag and clear away, avoid old and useless rubber to accumulate too much influence slider normal work, on the other hand, the old and useless rubber granule that blows away can continue to participate in subsequent crushing operation again, for example, the old and useless rubber granule that blows away can continue to be smashed by the cutting edge of cutting wheel and supplementary cutting tooth, consequently, very big improvement crushing effect, in addition, the air current can also make partial old and useless rubber granule advance with higher speed towards supplementary cutting tooth, increase the impact force, improve cutting effect, make old and useless rubber granule cut by a plurality of supplementary cutting teeth in proper order on the way of advancing simultaneously.

Preferably, one side of the top of the tooth, which is far away from the cutting wheel, is at least fixedly provided with a group of cutting edges, the lower ends of the cutting edges are fixedly connected with the crushing roller, and the thickness of the cutting edges is gradually reduced along the direction far away from the crushing roller; set up the cutting arris, on the one hand, it connects simultaneously and smashes tooth and crushing roller, improves the structural strength who smashes the tooth, increase of service life, on the other hand, it can also smash the old and useless rubber before the tooth collision and cut off, realizes the secondary crushing with smashing the tooth cooperation for the diminishing of old and useless rubber granule, simultaneously, the cutting arris can shunt the old and useless rubber that cuts off to both sides, and then makes partial old and useless rubber guide to cutting wheel department, realizes the secondary crushing, makes diminishing of old and useless rubber granule.

The invention has the following beneficial effects:

1. according to the thermoplastic elastomer material, the waste rubber particles are smaller by using the ultrafine grinder, the reaction interface of the waste rubber particles in unit weight is improved, the reaction efficiency between the waste rubber and the thermoplastic resin is improved, and the performance of the prepared thermoplastic elastomer material is ensured.

2. According to the thermoplastic elastomer material, the interface interaction between the waste rubber and the thermoplastic resin is improved through secondary modification, so that the waste rubber and the thermoplastic resin are easier to react, the physical and mechanical properties of the prepared thermoplastic elastomer material are excellent, the properties of the prepared thermoplastic elastomer material are close to those of the traditional polyolefin thermoplastic elastomer, and the cost is lower.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a process flow diagram of the present invention;

fig. 2 is a perspective view of a ultrafine pulverizer used in the present invention;

fig. 3 is a sectional view of a ultrafine pulverizer used in the present invention, except for a base and a main drive motor;

FIG. 4 is a partial cross-sectional view taken at A in FIG. 3;

FIG. 5 is a partial cross-sectional view at B in FIG. 3;

FIG. 6 is a cross-sectional view taken in the direction of C-C at the crushing teeth of FIG. 4;

in the figure:

1-base, 2-crushing unit, 21-crushing box, 22-feed hopper, 23-discharge port, 24-waste gas collecting pipe, 25-blanking port, 3-main driving motor, 31-main rotating shaft, 4-crushing roller, 5-crushing tooth, 51-tooth root, 52-tooth top, 53-auxiliary rotating shaft, 54-cutting wheel, 55-auxiliary cutting tooth, 56-annular groove, 57-slide block, 58-support rod, 59-cutting edge, 6-auxiliary crushing device, 61-spring, 62-shrapnel and 63-crushing shear.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the thermoplastic elastomer material of the present invention is prepared by the following steps:

The ultrafine grinder in the step S1 comprises a base 1, a grinding unit 2 fixed on the base 1, and a main driving motor 3 fixed on one side of the grinding unit 2 for driving the grinding unit to move; the crushing unit 2 comprises a crushing box 21, a feed hopper 22, a discharge port 23, an exhaust gas collecting pipe 24 and a blanking port 25, the crushing box 21 is fixed on the base 1, the upper end of one side of the crushing box 21 is fixed with the feed hopper 22 and is communicated with the feed hopper 22 through the discharge port 23, the upper end of the other side of the crushing box 21 is fixed with the exhaust gas collecting pipe 24 communicated with the same, and the lower end of the crushing box 21 is provided with the discharge port 23; a transverse main rotating shaft 31 is arranged in the crushing box 21, one end of the main rotating shaft 31 is connected with the output end of the main driving motor 3, and the main rotating shaft is arranged on two side walls of the crushing box 21 through bearings; a crushing roller 4 is arranged on a main rotating shaft 31 in the crushing box 21, and a plurality of crushing teeth 5 are uniformly distributed on the outer surface of the crushing roller 4; the crushing teeth 5 comprise tooth root parts 51 fixed on the crushing roller 4, at least two groups of tooth top parts 52 are arranged on the tooth root parts 51, and the tooth top parts 52 are arranged at intervals along the rotating direction of the crushing roller 4; an auxiliary rotating shaft 53 is arranged between the adjacent tooth tops 52, an auxiliary motor for driving the auxiliary rotating shaft 53 to rotate is arranged on the tooth tops 52, a cutting wheel 54 is arranged on the auxiliary rotating shaft 53, and the rotating axis of the cutting wheel is vertical to the rotating axis of the crushing roller 4.

When the crushing device is used, waste rubber is added into the crushing box 21 through the feed hopper 22 and the blanking port 25, the main driving motor 3 is started, the main driving motor 3 drives the crushing roller 4 and the crushing teeth 5 to rotate at a high speed through the main rotating shaft 31, the tooth tops 52 of the crushing teeth 5 are used for cutting and crushing the waste rubber in one direction, and the crushing effect on the waste rubber with larger volume is better; meanwhile, the auxiliary motor drives the cutting wheel 54 to rotate, the small waste rubber at the part after the crushing teeth 5 are crushed is subjected to secondary cutting, and the cutting direction of the waste rubber is different from that of the crushing teeth 5, so that a good crushing effect can be realized in single rotation; meanwhile, the cutting wheel 54 is arranged between the adjacent tooth tops 52, so that the cutting wheel 54 can be protected from most impact, the service life is prolonged, and the cost is reduced.

As an embodiment of the present invention, an auxiliary crushing device 6 is disposed between adjacent tooth roots 51, the auxiliary crushing device 6 includes an arc-shaped elastic sheet 62, both ends of the elastic sheet 62 are fixedly connected with springs 61, a spring seat matched with the springs 61 is disposed on the tooth roots 51, and the tooth roots 51 are connected with the elastic sheet 62 through the spring seat and the springs 61; when the device is arranged in such a way, a certain distance exists between the adjacent crushing teeth 5 originally, so that part of waste rubber can pass through the position and can not be crushed in a single rotation, and the crushing effect and the crushing efficiency are poor; when the elastic sheet 62 and the spring 61 are arranged between the adjacent crushing teeth 5, the elastic sheet 62 can rotate along the same direction while the crushing teeth 5 rotate, and the thinner side surface of the elastic sheet can crush the waste rubber passing through the crushing teeth, so that the crushing effect can be obviously improved; meanwhile, the elastic sheet 62 can swing up and down under the action of the impact force of the waste rubber during cutting, arch up in time and stretch out in time, so that the crushing range is changed from a line to a surface, and the crushing effect is further improved; finally, the up-and-down swinging elastic sheet 62 can also eject the uncut waste rubber on the upper surface, and part of the ejected waste rubber can fly to the adjacent crushing teeth 5 or the cutting wheel 54, so that multiple cutting is realized, and the purpose of making the waste rubber particles smaller is further realized.

As an embodiment of the present invention, a crushing shears 63 is disposed on one side of the elastic sheet 62 away from the crushing roller 4, two operation handles of the crushing shears 63 are respectively fixed on the elastic sheet 62, and two blade portions of the crushing shears 63 are initially closed; initially, the blade part of the crushing shears 63 is closed, the blade part can be regarded as a small crushing tooth 5, waste rubber between adjacent crushing teeth 5 can be crushed, the crushing effect of the crushing teeth 5 is effectively supplemented, and the crushing effect can be obviously improved; when the elastic sheet 62 is pressed downwards and unfolded, the operation handle and the blade part of the crushing shears 63 are driven to be unfolded outwards, and the waste rubber passing through the position can be bounced outwards to be cut by the adjacent crushing teeth 5 or the cutting wheel 54; when the bullet resets on shell fragment 62, the blade point portion of broken scissors 63 is closed once more, can cut the old and useless rubber that the walking was here, further makes old and useless rubber granule diminish, and the part old and useless rubber that plays when can also springing the reset on the shell fragment 62 simultaneously is cut for most old and useless rubber homoenergetic that the shell fragment 62 bounced away carries out effective breakage, has consequently promoted crushing effect, has improved crushing efficiency.

In one embodiment of the present invention, the cutting wheel 54 is provided with a plurality of auxiliary cutting teeth 55 at intervals from outside to inside in sequence at the cutting edge, and the length of the auxiliary cutting teeth 55 is gradually increased from outside to inside; can carry out the multiple spot cutting to great old and useless rubber, and then improve cutting efficiency, intensive cutting also can make the granule after the old and useless rubber is broken littleer simultaneously, and crushing effect is better.

As an embodiment of the invention, the side surface of the cutting wheel 54 is provided with at least one group of annular grooves 56, and the side surface and the bottom surface of the annular grooves 56 are provided with annular wear-resistant air bags matched with the annular grooves; a sliding block 57 sliding along the inside of the annular groove 56 is arranged in the annular groove, a supporting rod 58 is fixedly arranged on one side of the tooth top 52 facing the cutting wheel 54, and the supporting rod 58 is fixedly connected with the sliding block 57; the annular groove 56, the sliding block 57 and the supporting rod 58 are arranged to provide an auxiliary supporting function when the cutting wheel 54 is impacted by waste rubber, so that damage to the cutting wheel 54 caused by overlarge impact is avoided, and the influence on the cutting effect caused by overlarge swing amplitude of the cutting wheel 54 is also avoided; the wear-resistant air bag is arranged in the annular groove 56, on one hand, when the cutting wheel 54 swings in a small range, the sliding block 57 can extrude the wear-resistant air bag to enable the wear-resistant air bag to deform and bulge, the ejected air flow can blow away the waste rubber particles adhered on the wear-resistant air bag, so as to avoid the waste rubber from being accumulated too much to influence the normal work of the sliding block 57, on the other hand, the blown waste rubber particles can continue to participate in the subsequent crushing operation, for example, the blown waste rubber particles can be continuously crushed by the cutting edges of the cutting wheel 54 and the auxiliary cutting teeth 55, thereby greatly improving the crushing effect, in addition, the air flow can also accelerate partial waste rubber particles to advance towards the auxiliary cutting teeth 55, so that the impact force is increased, the cutting effect is improved, simultaneously, the waste rubber particles can be sequentially cut by the auxiliary cutting teeth 55 during advancing, and the thinning effect is greatly improved.

In one embodiment of the present invention, at least one set of cutting edges 59 is fixedly disposed on the side of the tooth top 52 away from the cutting wheel 54, the lower ends of the cutting edges 59 are fixedly connected with the pulverizing roller 4, and the thickness of the cutting edges 59 gradually becomes thinner along the direction away from the pulverizing roller 4; set up cutting arris 59, on the one hand, it connects simultaneously and smashes tooth 5 and crushing roller 4, improve the structural strength who smashes tooth 5, and increase of service life, on the other hand, it can also smash the old and useless rubber before tooth 5 collides and cut off, realize the secondary crushing with crushing tooth 5 cooperation, make the diminishing of old and useless rubber granule, and simultaneously, cutting arris 59 can shunt the old and useless rubber that cuts off to both sides, and then make partial old and useless rubber guide to cutting wheel 54 department, realize the secondary crushing, make diminishing of old and useless rubber granule.

When the crushing device is used, waste rubber is added into the crushing box 21 through the feed hopper 22 and the blanking port 25, the main driving motor 3 is started, the main driving motor 3 drives the crushing roller 4 and the crushing teeth 5 to rotate at a high speed through the main rotating shaft 31, the tooth tops 52 of the crushing teeth 5 are used for cutting and crushing the waste rubber in one direction, and the crushing effect on the waste rubber with larger volume is better; meanwhile, the auxiliary motor drives the cutting wheel 54 to rotate, the small waste rubber at the part after the crushing teeth 5 are crushed is subjected to secondary cutting, and the cutting direction of the waste rubber is different from that of the crushing teeth 5, so that a good crushing effect can be realized in single rotation; meanwhile, the cutting wheel 54 is arranged between the adjacent tooth tops 52, so that the cutting wheel 54 can be protected from most impact, the service life is prolonged, and the cost is reduced; originally, a certain distance exists between adjacent crushing teeth 5, so that part of waste rubber can pass through the position and can not be crushed when the crushing teeth rotate for a single time, and the crushing effect and the crushing efficiency are poor, after the elastic sheets 62 and the springs 61 are arranged between the adjacent crushing teeth 5, the elastic sheets 62 can rotate along the same direction while the crushing teeth 5 rotate, the thinner side surface of the elastic sheets can crush the waste rubber passing through the position, and the crushing effect can be obviously improved; meanwhile, the elastic sheet 62 can swing up and down under the action of the impact force of the waste rubber during cutting, arch up and stretch out, so that the crushing range is changed from a line to a surface, the crushing effect is further improved, finally, the elastic sheet 62 swinging up and down can eject the waste rubber of which the upper surface is not cut away, and part of the ejected waste rubber flies to the adjacent crushing teeth 5 or the cutting wheel 54, so that multiple cutting is realized, and the purpose of reducing the waste rubber particles is further realized; initially, the blade part of the crushing shears 63 is closed, the blade part can be regarded as a smaller crushing tooth 5, the waste rubber between the adjacent crushing teeth 5 can be crushed, the crushing effect of the crushing teeth 5 is effectively supplemented, the crushing effect can be obviously improved, when the elastic sheet 62 is pressed downwards and unfolded, the operation handle and the blade part of the breaking scissors 63 are driven to be unfolded outwards, so that the waste rubber passing through the position can be bounced outwards to be cut by the adjacent crushing teeth 5 or the cutting wheel 54, when the elastic sheet 62 is elastically restored, the blade part of the breaking scissors 63 is closed again, the waste rubber passing through the blade part can be cut, the waste rubber particles are further reduced, meanwhile, the part of the waste rubber bounced up by the elastic sheet 62 during the rebound can be cut, so that most of the waste rubber bounced away by the elastic sheet 62 can be effectively crushed, the crushing effect is improved, and the crushing efficiency is improved; the annular groove 56, the sliding block 57 and the supporting rod 58 are arranged to provide an auxiliary supporting function when the cutting wheel 54 is impacted by waste rubber, so that damage to the cutting wheel 54 caused by overlarge impact is avoided, and the influence on the cutting effect caused by overlarge swing amplitude of the cutting wheel 54 is also avoided; the wear-resistant air bag is arranged in the annular groove 56, on one hand, when the cutting wheel 54 swings in a small range, the sliding block 57 can extrude the wear-resistant air bag to enable the wear-resistant air bag to deform and bulge, the ejected air flow can blow away the waste rubber particles adhered on the wear-resistant air bag, so as to avoid the waste rubber from being accumulated too much to influence the normal work of the sliding block 57, on the other hand, the blown waste rubber particles can continue to participate in the subsequent crushing operation, for example, the blown waste rubber particles can be continuously crushed by the cutting edges of the cutting wheel 54 and the auxiliary cutting teeth 55, thereby greatly improving the crushing effect, in addition, the air flow can also accelerate partial waste rubber particles to advance towards the auxiliary cutting teeth 55, so that the impact force is increased, the cutting effect is improved, meanwhile, the waste rubber particles can be sequentially cut by the auxiliary cutting teeth 55 in the advancing process, so that the thinning effect is greatly improved; set up cutting arris 59, on the one hand, it connects simultaneously and smashes tooth 5 and crushing roller 4, improve the structural strength who smashes tooth 5, and increase of service life, on the other hand, it can also smash the old and useless rubber before tooth 5 collides and cut off, realize the secondary crushing with crushing tooth 5 cooperation, make the diminishing of old and useless rubber granule, and simultaneously, cutting arris 59 can shunt the old and useless rubber that cuts off to both sides, and then make partial old and useless rubber guide to cutting wheel 54 department, realize the secondary crushing, make diminishing of old and useless rubber granule.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A thermoplastic elastomeric material characterized by: the preparation method comprises the following steps:

the superfine pulverizer in S1 comprises a base (1), a pulverizing unit (2) fixed on the base (1) and a main drive motor (3) fixed on one side of the pulverizing unit (2) and used for driving the pulverizing unit to act; the crushing unit (2) comprises a crushing box (21), a feed hopper (22), a discharge hole (23), an exhaust gas collecting pipe (24) and a blanking hole (25), the crushing box (21) is fixed on the base (1), the upper end of one side of the crushing box (21) is fixedly provided with the feed hopper (22) and is communicated with the feed hopper (22) through the discharge hole (23), the upper end of the other side of the crushing box (21) is fixedly provided with the exhaust gas collecting pipe (24) communicated with the same, and the lower end of the crushing box (21) is provided with the discharge hole (23); a transverse main rotating shaft (31) is arranged in the crushing box (21), one end of the main rotating shaft (31) is connected with the output end of the main driving motor (3), and the main rotating shaft is arranged on two side walls of the crushing box (21) through bearings; a crushing roller (4) is arranged on a main rotating shaft (31) positioned in the crushing box (21), and a plurality of crushing teeth (5) are uniformly distributed on the outer surface of the crushing roller (4); the crushing teeth (5) comprise tooth root parts (51) fixed on the crushing roller (4), at least two groups of tooth tops (52) are arranged on the tooth root parts (51), and the tooth tops (52) are arranged at intervals along the rotating direction of the crushing roller (4); an auxiliary rotating shaft (53) is arranged between the adjacent tooth tops (52), an auxiliary motor for driving the auxiliary rotating shaft (53) to rotate is arranged on each tooth top (52), a cutting wheel (54) is arranged on each auxiliary rotating shaft (53), and the rotating axis of each auxiliary rotating shaft is perpendicular to the rotating axis of the crushing roller (4).

2. A thermoplastic elastomeric material according to claim 1, wherein: an arc-shaped elastic sheet (62) is arranged between every two adjacent tooth roots (51), springs (61) are fixedly connected to two ends of each elastic sheet (62), spring seats matched with the springs (61) are arranged on the tooth roots (51), and the tooth roots (51) are connected with the elastic sheets (62) through the spring seats and the springs (61).

3. A thermoplastic elastomeric material according to claim 2, wherein: the crushing shears are characterized in that one side, away from the crushing roller (4), of the elastic sheet (62) is provided with a crushing shear (63), two operating handles of the crushing shear (63) are respectively fixed on the elastic sheet (62), and two blade parts of the crushing shear (63) are closed initially.

4. A thermoplastic elastomeric material according to claim 1, wherein: the cutting wheel (54) is positioned at the cutting edge and is sequentially provided with a plurality of auxiliary cutting teeth (55) at intervals from outside to inside, and the length of each auxiliary cutting tooth (55) is gradually increased from outside to inside.

5. A thermoplastic elastomeric material according to claim 1, wherein: the side surface of the cutting wheel (54) is at least provided with a group of annular grooves (56), and the side surface and the bottom surface of each annular groove (56) are provided with annular wear-resistant air bags matched with the annular grooves; a sliding block (57) sliding along the inner part of the annular groove (56) is arranged in the annular groove, a supporting rod (58) is fixedly arranged on one side, facing the cutting wheel (54), of the tooth top part (52), and the supporting rod (58) is fixedly connected with the sliding block (57).

6. A thermoplastic elastomeric material according to claim 1, wherein: one side, far away from the cutting wheel (54), of the tooth top portion (52) is at least fixedly provided with a group of cutting edges (59), the lower ends of the cutting edges (59) are fixedly connected with the crushing rollers (4), and the thickness of the cutting edges is gradually reduced along the direction far away from the crushing rollers (4).