CN114685871B - Edge-cutting type helical-tooth-shaped triangular belt and production process thereof - Google Patents
Edge-cutting type helical-tooth-shaped triangular belt and production process thereof Download PDFInfo
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- CN114685871B CN114685871B CN202210343226.6A CN202210343226A CN114685871B CN 114685871 B CN114685871 B CN 114685871B CN 202210343226 A CN202210343226 A CN 202210343226A CN 114685871 B CN114685871 B CN 114685871B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/06—Conveyor belts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The invention discloses a trimming type helical tooth-shaped triangular belt and a production process thereof, wherein the trimming type helical tooth-shaped triangular belt has good mechanical property, is not easy to generate heat and has good heat dissipation performance, and the key point of the technical scheme is that the trimming type helical tooth-shaped triangular belt comprises a fiber glue layer, wherein the raw materials of the fiber glue layer comprise the following components in parts by weight: 100 parts of neoprene; 10-20 parts of butadiene styrene rubber; 10-20 parts of butadiene rubber; 20-30 parts of carbon black; 1.5 of an anti-aging agent RD; 1-3 parts of an accelerator DM; 1-3 parts of plasticizer DOP; 4 parts of magnesium oxide; 5 parts of zinc oxide; 20-30 parts of modified calcium carbonate; modified polyester fiber: 10-20 parts; 5-10 parts of cotton powder, and the invention is suitable for the technical field of V-belts.
Description
Technical Field
The invention belongs to the technical field of V-belts, and particularly relates to an edge-cutting type inclined-tooth V-belt and a production process thereof.
Background
The V-belt is a conveyer belt widely used in various machines, mainly composed of industrial canvas, soft polyester thread and fiber glue layer, wherein the fiber glue layer mainly comprises natural rubber, styrene butadiene rubber, reclaimed rubber and compounding agents (zinc oxide, stearic acid, anti-aging agent, carbon black, softening agent and the like). The friction force between the triangular belt and the belt wheel can be increased in the use process of the triangular belt, 110 ℃ heat is generated, the heat which is dissipated is always surrounded around the belt body along with the operation of the triangular belt, the temperature of the surrounding environment is increased, the temperature of the belt body is increased along with the increase of the temperature of the surrounding environment, the rubber is a thermoplastic material, the temperature is increased, the fatigue and flexing resistance performance is deteriorated, the triangular belt is easy to damage, breaks down, the service life is shortened, and the like.
In order to solve the above problems, corresponding improvements have been made in the prior art, as disclosed in application No. CN201710575194.1, but in order to ensure the strength of the V-belt, a large amount of carbon black is generally required to be added as a reinforcing material, but the carbon black improves the mechanical properties of the vulcanized rubber and simultaneously makes the compression heat generation of the vulcanized rubber become significantly large; based on the problems, the raw material proportion and the production process of the V-belt need to be further researched.
Disclosure of Invention
The invention aims to provide an edge cutting type helical tooth-shaped triangular belt and a production process thereof, which have good mechanical property, are difficult to generate heat and have good heat dissipation performance.
The purpose of the invention is realized by the following steps: the edge-cutting type oblique tooth-shaped triangular belt comprises a fiber adhesive layer, wherein the fiber adhesive layer comprises the following raw materials in parts by weight:
100 parts of neoprene;
10-20 parts of butadiene styrene rubber;
10-20 parts of butadiene rubber;
20-30 parts of carbon black;
1.5 of an anti-aging agent RD;
1-3 parts of an accelerator DM;
1-3 parts of plasticizer DOP;
4 parts of magnesium oxide;
5 parts of zinc oxide;
20-30 parts of modified calcium carbonate;
modified polyester fiber: 10-20 parts;
5-10 parts of cotton powder.
The invention is further configured to: the modified calcium carbonate is obtained by the following method:
crushing limestone and grinding the crushed limestone into micron-sized calcium carbonate powder, putting the fine powder into a mixture consisting of linolenic acid grease and sodium lignosulfonate, uniformly stirring, and grinding the mixture again into nano-sized calcium carbonate powder;
then putting calcium carbonate powder into the aqueous solution of polyethyleneimine, wherein the concentration of the polyethyleneimine is 5mg/ml, stirring for 30 minutes, and filtering and drying;
and then putting the mixture into a polyamic acid solution, stirring the mixture for 30 minutes, filtering the mixture to remove the solvent, and washing the mixture to obtain the polyamic acid coated modified calcium carbonate.
The invention is further configured to: the modified polyester fiber is obtained by the following method:
cutting the polyester fiber into short fibers with the length of 8mm, dispersing the polyester fiber to be in a loose state, and then putting the polyester fiber into a muffle furnace at the temperature of 80 ℃ for 6min;
then dispersing the heated polyester fiber to a loose state, then soaking the polyester fiber in a natural latex solution, and drying the polyester fiber after 5 min;
and then soaking the polyester fiber in 10 mass percent phosphoric acid solutions, stirring in a water bath at 50 ℃ for 1h, then washing with distilled water to be neutral, and drying at 105 ℃ for 5h.
A production process of a trimming type inclined-tooth-shaped triangular belt comprises the following steps:
a. preparing materials: preparing a fiber glue layer raw material, and additionally preparing viscose glue, polyester hard cord, cushion gum and gum dipping canvas;
b. mixing: independently mixing the raw materials of the fiber glue layer, the viscose glue and the buffer glue;
c. rolling: respectively calendering the mixed fiber glue, viscose glue and buffer glue in a calender;
e. molding: firstly, sticking gum dipping canvas on a mould to form a rubberized fabric layer, then sticking buffer glue to form a buffer glue layer, then sticking viscose to form a viscose layer, spirally winding polyester hard cords on the outer surface of the viscose layer to enable the polyester hard cords to be longitudinally arranged, wherein the longitudinal arrangement refers to the length direction arrangement of the triangular belt, and finally sticking a fiber glue layer to form a belt drum;
g. and (3) vulcanization: putting the formed belt drum on a helical tooth-shaped rubber sleeve mold, and putting the belt drum into a vulcanizing tank for vulcanization;
h. cutting: controlling the cutting angle and width, and cutting the triangular belt into required size.
The invention is further configured to: the rubber mixing step of the fiber rubber layer comprises the following steps:
banburying: the initial temperature of the internal mixer is 70 ℃, the rotating speed is 60r/min, firstly, the neoprene, the butadiene-styrene rubber and the butadiene rubber are added, and the temperature is controlled to be 100-105 ℃; adding magnesium oxide, zinc oxide, modified calcium carbonate, carbon black, modified polyester fiber and cotton powder after 5min, and controlling the temperature at 95-100 ℃; adding antioxidant RD, promoter and plasticizer after 5min, and controlling the temperature at 100-105 deg.C;
open smelting: the initial roll temperature of an open mill is 60 ℃, the rotation speed is 40r/min, the masterbatch obtained by banburying is thinned and passed for 3 times, the roll gap is 1mm, the triangular package is performed for 6 times, the roll gap is 0.3mm, and after 2 times of rolling, the sheet is removed, and the roll gap is 1.5mm, so that the fiber adhesive is obtained.
By adopting the technical scheme, the method has the following advantages:
by adding the modified calcium carbonate, the use amount of the carbon black can be reduced on the premise of ensuring the mechanical property, so that the heat generation is reduced;
after the calcium carbonate is modified, the dispersibility is good, and the dynamic heat generation can be effectively reduced;
the mechanical property of the V-belt can be effectively improved by adding the modified polyester fiber;
the integral forming process is simple, the production efficiency is high, the addition amount of the filler can be effectively reduced by the finished product triangular belt, the mechanical property is good, and the heat is not easy to generate.
The invention is further configured to: the internal mixer comprises an automatic feeding system, an internal mixing system and a control system, wherein the control system is used for controlling the running states of the automatic feeding system and the internal mixing system;
the banburying system comprises:
a banburying chamber;
an upper ram assembly;
the upper top bolt assembly comprises a feeding cavity and a weight positioned in the feeding cavity, a main feeding port, a liquid feeding port, a powder feeding port and an air outlet are arranged on the feeding cavity, the main feeding port is connected with a main feeding hopper, the feeding port is connected with the liquid feeding hopper, a dust filtering net is arranged on the air outlet, and an air purifying device is connected to the air outlet;
automatic feeding system includes:
the feeding hopper is used for feeding auxiliary materials;
the mixing device comprises a feeding channel, a discharging channel, an air inlet channel, a pressure channel, a fiber channel and a mixing cavity;
the first spiral conveyor is used for conveying the materials in the feeding hopper into the mixing device;
the second screw conveyor is used for conveying the mixed materials in the mixing device into the internal mixer;
the mixing cavity is of a circular structure, the pressure channel is positioned at the top of the mixing cavity, the discharge channel is positioned at the bottom of the mixing cavity, the air inlet channel is tangentially communicated with the mixing cavity, the air inlet channel is provided with an air supply pump for supplying inert gas, and the feeding channel and the fiber channel are also communicated with the mixing cavity;
the material mixing cavity is also internally provided with a feeding door assembly for controlling the opening and closing of the feeding channel and a discharging door assembly for controlling the opening and closing of the discharging channel;
the pressure channel is connected with an energy accumulator, the pressure channel is provided with a regulating valve, the mixing cavity is also provided with a dustproof filter screen covering the port of the pressure channel, and the mixing cavity is also provided with a guide plate positioned at the port of the pressure channel.
The invention is further configured to: the feeding door assembly comprises a feeding door body, one end of the feeding door body is hinged to the mixing device, a first electromagnet for controlling the other end of the feeding door body to open and close is further arranged in the mixing device, and a first reset spring which is abutted against the back face of the feeding door body is further arranged in the mixing device;
when the first electromagnet is electrified, the first electromagnet generates repulsion force on the feeding door body, and the first return spring is stretched to open the feeding door body; when the first electromagnet is powered off, the feeding door body is closed under the action of the first return spring.
The invention is further configured to: the discharge door assembly comprises a discharge door body, an electric cylinder and a limiting stop mechanism; one end of the electric cylinder is hinged in the material mixing device, and the other end of the electric cylinder is hinged on the inner side of the discharge door body;
the limiting stop mechanism comprises a stop plate, the stop plate is attached to the inner wall of the discharge channel, a chute is arranged in the discharge channel, a sliding block matched with the chute is arranged on the stop plate, and a return spring axially abutted against the sliding block is arranged in the chute;
an electromagnetic assembly used for limiting the axial movement of the material baffle plate is further arranged in the material mixing device, the electromagnetic assembly comprises a limiting rod and a second electromagnet used for controlling the limiting rod to stretch and retract along the radial direction of the material discharging channel, a second reset spring is arranged between the limiting rod and the second electromagnet, and a limiting groove used for being matched with the limiting rod is further formed in the sliding block;
when the second electromagnet is electrified, the second electromagnet generates attraction force on the limiting rod, and the limiting rod is separated from the limiting groove; when the second electromagnet is powered off, the limiting rod extends into the limiting groove under the action force of the second return spring.
The invention is further configured to: the regulating valve includes:
a valve housing;
the valve port is positioned in the valve shell;
the valve core is positioned at the valve port;
the valve core comprises a fixed support, a buffer spring and a valve clack, the fixed support is arranged in the valve casing, an overflowing gap is formed between the valve clack and the valve port, the buffer spring is arranged between the fixed support and the valve clack, the fixed support also comprises a guide rod penetrating through the valve clack, a positioning sleeve is arranged on one side of the fixed support, which faces the valve clack, and the buffer spring is arranged in the positioning sleeve; when the valve clack is abutted against the positioning column, a minimum overflowing gap is formed between the valve clack and the valve port;
the valve clack is also provided with an extending part which is abutted against the inner wall of the valve casing, the extending part is provided with an air passing hole, the side wall of the valve casing is also provided with an air outlet, and the air outlet is connected with a cleaning air pipe which is communicated with the feeding hopper; when the valve clack floats upwards, the air exhaust port is blocked by the extending part; when the valve clack floats downwards, the exhaust port is opened.
The invention is further configured to: the banburying process comprises the following specific steps:
the method comprises the following steps: the control system controls the temperature of the internal mixer to rise to 70 ℃, the rotating speed is 60r/min, and the weight is at the highest position; then putting the chloroprene rubber, the butadiene styrene rubber and the butadiene rubber into the feeding cavity through the main feeding port;
step two: then the weight is lowered, the first banburying is started, and the temperature is gradually increased to 100-105 ℃; meanwhile, weighing magnesium oxide, zinc oxide, modified calcium carbonate and carbon black, putting the weighed materials into a feeding hopper, and weighing the modified polyester fiber and the cotton powder, and then feeding the weighed materials into a fiber channel;
step three: the feeding door assembly is opened, the discharging door assembly is closed, and the first spiral conveyor simultaneously conveys all auxiliary materials into the mixing cavity;
then the feeding door assembly is closed, the air supply pump is started to blow air into the material mixing cavity along the tangential direction, the air flow generates annular rotational flow in the material mixing cavity, and all auxiliary materials are uniformly mixed in the annular rotational flow process;
after mixing, the air inlet channel is closed, the discharge channel is opened, the feed channel is opened, the energy accumulator releases pressure to send mixed powder in the mixing cavity into the second spiral conveyor along the discharge channel, meanwhile, partial pressure of the energy accumulator enters the feed hopper through the cleaning air pipe to clean the feed hopper, the first spiral conveyor and the feed channel, and the cleaned powder enters the mixing cavity and is discharged from the discharge channel along with the mixed powder to enter the second spiral conveyor;
step four: after the first banburying time is up for 5min, the weight rises, and then the mixed powder is sent into a powder feeding port through a second screw conveyer;
step five: the weight is reduced again, the banburying temperature is controlled by a control system to be 95-100 ℃, and the second banburying is started; simultaneously weighing auxiliary materials of the antioxidant RD and the accelerator DM and then putting the auxiliary materials into a feeding hopper;
step six: repeating the process of the third step;
step seven: after the secondary banburying is carried out for 5min, the weight rises, the mixed powder is sent into a powder feeding port by a second screw conveyor, and meanwhile, a plasticizer DOP is sent into a liquid feeding port;
step eight: and the weight is lowered again, the banburying temperature is controlled to be 100-105 ℃ by a control system, and finally, banburying is carried out for 3 minutes and then rubber discharging is carried out.
The banburying process has the advantages that: the auxiliary materials can be fully mixed in advance, and the dispersion uniformity is good after the auxiliary materials are put into the mixing chamber 1, so that the rubber mixing quality can be improved, the rubber mixing time is reduced, and the problem of poor dispersion uniformity caused by the existing direct auxiliary material adding mode is solved; the automatic feeding system has an automatic cleaning function, the utilization rate of gas energy is high, and the multiple functions of mixing, cleaning and purifying the gas in the mixing chamber 1 can be realized; can effectively improve the quality of rubber mixing.
Drawings
FIG. 1 is a schematic view of the internal mixer of the present invention;
FIG. 2 is a schematic diagram of the automatic feeding system of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of a regulator valve according to the present invention;
the reference numbers in the figures are: 1. a banburying chamber; 2. a feeding cavity; 3. pressing; 4. a main feeding port; 5. a liquid feed port; 6. an air outlet; 7. a feeding hopper; 8. a mixing device; 9. a first screw conveyor; 10. a second screw conveyor; 11. a mixing chamber; 12. a feed channel; 13. a discharge channel; 14. an intake passage; 15. A pressure channel; 16. an accumulator; 17. adjusting a valve; 18. a baffle; 19. a feed door body; 20. a first electromagnet; 21. a first return spring; 22. a discharge door body; 23. an electric cylinder; 24. a striker plate; 25. A slider; 26. a return spring; 27. a limiting rod; 28. a second electromagnet; 29. a second return spring; 30. Positioning a groove; 31. fixing a bracket; 32. a buffer spring; 33. an extension portion; 34. a valve flap; 35. a guide rod; 36. an overcurrent gap; 37. a positioning sleeve; 38. an exhaust port; 39. cleaning the air pipe; 40. and (3) fiber channels.
Detailed Description
A production process of a trimming type helical tooth-shaped triangular belt comprises the following steps:
a. preparing materials: preparing a raw material of a fiber glue layer, and preparing viscose glue, polyester hard cord, cushion gum and gum dipped canvas;
b. mixing: independently mixing the raw materials of the fiber glue layer, the viscose glue and the buffer glue;
c. rolling: respectively calendering the mixed fiber glue, viscose glue and buffer glue in a calender;
e. molding: firstly, sticking gum dipping canvas on a mould to form a rubberized fabric layer, then sticking buffer glue to form a buffer glue layer, then sticking the viscose to form a viscose layer, spirally winding polyester hard cords on the outer surface of the viscose layer to enable the polyester hard cords to be longitudinally arranged, wherein the longitudinal arrangement refers to the length direction arrangement of a triangular belt, and finally sticking a fiber glue layer to form a belt drum;
g. and (3) vulcanization: putting the formed belt drum on the helical tooth-shaped rubber sleeve mold, and putting the belt drum into a vulcanizing tank for vulcanization;
h. cutting: controlling the cutting angle and width to cut the V-belt into required size.
Wherein in the vulcanization process, adopt profile of tooth gum cover mould to vulcanize the shaping, the V belt is skewed tooth shape structure after the shaping, and skewed tooth shape V belt produces the unilateral air current in the operation, has good radiating effect, keeps self to be in low temperature state all the time, has improved life greatly.
The invention is further configured to: the rubber mixing step of the fiber rubber layer comprises the following steps:
banburying: the initial temperature of an internal mixer is 70 ℃, the rotating speed is 60r/min, firstly, neoprene, butadiene-styrene rubber and butadiene rubber are added, and the temperature is controlled to be 100-105 ℃; adding magnesium oxide, zinc oxide, modified calcium carbonate, carbon black, modified polyester fiber and cotton powder after 5min, and controlling the temperature at 95-100 ℃; adding antioxidant RD, promoter and plasticizer after 5min, and controlling the temperature at 100-105 deg.C;
open mixing: the initial roll temperature of an open mill is 60 ℃, the rotation speed is 40r/min, the masterbatch obtained by banburying is thinned and passed for 3 times, the roll gap is 1mm, the triangular package is performed for 6 times, the roll gap is 0.3mm, and after 2 times of rolling, the sheet is removed, and the roll gap is 1.5mm, so that the fiber adhesive is obtained.
Production efficiency can be improved through the mode of once banburying continuous production, and the banburying in-process, through reasonable temperature control, realize the optimal banburying effect, can provide stronger shearing force through the mode of follow-up mill for the mixed effect of sizing material is better.
The invention is further configured to: the modified calcium carbonate is obtained by the following method:
crushing limestone and grinding the crushed limestone into micron-sized calcium carbonate powder, putting the fine powder into a mixture consisting of linolenic acid grease and sodium lignosulfonate, uniformly stirring, and grinding the mixture again into nano-sized calcium carbonate powder;
then putting calcium carbonate powder into the aqueous solution of polyethyleneimine, wherein the concentration of the polyethyleneimine is 5mg/ml, stirring for 30 minutes, and filtering and drying;
and then putting the mixture into a polyamic acid solution, stirring the mixture for 30 minutes, filtering the mixture to remove the solvent, and washing the mixture to obtain the polyamic acid coated modified calcium carbonate.
Through carrying out modification treatment on the surface of the calcium carbonate, a better grafting connection effect can be formed between the calcium carbonate and rubber, the rubber reinforcing effect is improved, the surface activity is high, rubber sizing materials are easy to mix, the processing technology is good, and the compression themogenesis of the sizing materials can be effectively reduced.
The invention is further configured to: the modified polyester fiber is obtained by the following method:
cutting the polyester fiber into short fibers with the length of 8mm, dispersing the polyester fiber to be in a loose state, and then putting the polyester fiber into a muffle furnace at the temperature of 80 ℃ for 6min;
then dispersing the heated polyester fiber to a loose state, then soaking the polyester fiber in a natural latex solution, and drying the polyester fiber after 5 min;
and then soaking the polyester fiber in 10 mass percent phosphoric acid solutions, stirring in a water bath at 50 ℃ for 1h, then washing with distilled water to be neutral, and drying at 105 ℃ for 5h.
By improving the polyester fiber, the bonding strength between the polyester fiber and the rubber matrix is enhanced, the movement of rubber molecular chains is limited, and thus the heat generation is reduced.
The following specific examples and comparative examples were formed according to the different combinations of the raw materials in parts by weight and prepared according to the above specific production process, as shown in table 1 below:
physical property tests were conducted according to the examples and comparative examples in the above table 1, and the test results are as follows in table 2:
in table 2, in order to produce the same type of vee belts respectively by using the above-mentioned base rubber raw materials as the fiber rubber layers, it can be obviously found that the mechanical properties in the examples are obviously higher than those in the comparative examples, that is, the scheme can reduce the addition amount and improve the mechanical properties by modifying the filler.
According to the existing testing machine for researching the compression heat generation performance, the testing test is carried out according to the GB/T1687 vulcanized rubber compression heat generation test regulation, the compression heat generation testing temperature is set to be 55 ℃, the stroke is 4.45mm, the compression frequency is 30HZ, the testing time is 25min, and the results are shown in the table 2;
and (4) experimental conclusion: as can be seen from the above table, the finished product obtained by proportioning the components of the embodiment has a particularly significant improvement in compression temperature rise, the temperature rise is significantly reduced, and the fatigue life is improved.
In addition, the triangular belt of the embodiment 3 and the triangular belt of the comparative example 3 are used for detection according to GB/T15328 No. torque method of fatigue test method of common V belt; and (4) test conclusion: the V-belt of comparative example 3 broke at 500 hours and the V-belt of example 3 was still intact after 800 hours of testing.
The comparison test can determine that the addition of the modified calcium carbonate and the modified polyester in the raw material proportion of the V-belt is beneficial to reducing the dynamic heat generation of the V-belt and can greatly improve the fatigue life of the product.
The internal mixer in the process selects an internal mixer with an automatic feeding system, the internal mixer comprises an automatic feeding system, an internal mixing system and a control system, the control system is used for controlling the running states of the automatic feeding system and the internal mixing system, and the control system can be an existing PLC control system and the like;
the banburying system comprises:
an internal mixing chamber 1;
an upper ram assembly;
the upper top bolt assembly comprises a feeding cavity 2 and a weight 3 positioned in the feeding cavity 2, a main feeding port 4, a liquid feeding port 5, a powder feeding port and an air outlet 6 are arranged on the feeding cavity 2, the main feeding port 4 is connected with a main feeding hopper 7, the feeding port is connected with the liquid feeding hopper 7, a dust filtering net is arranged on the air outlet 6, and an air purifying device is connected to the air outlet 6;
the air outlet 6 is used for discharging waste gas generated in the banburying process and purifying the waste gas by the conventional air purification device;
automatic feeding system includes:
a feeding hopper 7 for feeding auxiliary materials;
the mixing device 8 comprises a feeding channel 12, a discharging channel 13, an air inlet channel 14, a pressure channel 15, a fiber channel 40 and a mixing cavity 11;
the first screw conveyor 9 is used for conveying the materials in the feeding hopper 7 into the mixing device 8;
the second screw conveyor 10 is used for conveying the mixed materials in the mixing device 8 into the internal mixer;
the mixing cavity 11 is of a circular structure, the pressure channel 15 is located at the top of the mixing cavity 11, the discharge channel 13 is located at the bottom of the mixing cavity 11, the gas inlet channel 14 is tangentially communicated with the mixing cavity 11, a gas supply pump for supplying inert gas is arranged on the gas inlet channel 14, and the gas inlet channel 12 and the fiber channel 40 are also communicated with the mixing cavity 11;
the mixing cavity 11 is used for fully premixing various powders to fully disperse the powders; the principle is as follows: tangential air supply is carried out in the mixing cavity 11 through an air supply pump, air flow generates circulation along with the round cavity, and various powders are fully dispersed and mixed in the circulation process; the fiber channel 40 is used for inputting modified fibers, the switch valve is required to be arranged on the fiber channel 40 and is only opened when the modified fibers are required to be input, the modified fibers can be fully dispersed in a gas blowing mixing mode and uniformly mixed with other powder, and the problems that the modified fibers are easy to mutually wind and knot and are not easy to disperse in a traditional mechanical stirring mode can be solved.
A feeding door assembly for controlling the opening and closing of the feeding channel 12 and a discharging door assembly for controlling the opening and closing of the discharging channel 13 are also arranged in the mixing cavity 11;
the pressure channel 15 is connected with an energy accumulator 16, the pressure channel 15 is provided with a regulating valve 17, the mixing cavity 11 is also internally provided with a dustproof filter screen covering the port of the pressure channel 15, and the mixing cavity 11 is also internally provided with a guide plate 18 positioned at the port of the pressure channel 15.
After the inert gas enters the mixing cavity 11, the pressure in the mixing cavity 11 is gradually increased, so that pressure is discharged through the pressure channel 15, the pressure is absorbed by the energy accumulator 16 for energy storage, and the dustproof filter screen can prevent auxiliary materials in the mixing cavity 11 from entering the pressure channel 15; the guide plate 18 is of an arc-shaped structure, and can guide the circumferential airflow and reduce the direct impact of the circumferential airflow on the dustproof filter screen; the regulating valve 17 is used to regulate the pressure at which the accumulator 16 supplies gas to the pressure channel 15.
The feeding door assembly comprises a feeding door body 19, one end of the feeding door body 19 is hinged to the mixing device 8, a first electromagnet 20 used for controlling the opening and closing of the other end of the feeding door body 19 is further arranged in the mixing device 8, and a first return spring 21 which is abutted to the back face of the feeding door body is further arranged in the mixing device 8;
the structure of the feeding door body 19 is an arc-shaped structure and is matched with the circular structure of the inner wall of the mixing cavity 11, when the feeding door body 19 is closed, the feeding door body 19 is the structure inside the mixing cavity 11, and similarly, the structural principle of the discharging door body 22 is the same as that of the feeding door body 19; two ends of the first return spring 21 are respectively fixed on the feeding door body 19 and the shell of the mixing device 8, and the initial state of the first return spring 21 is in a stretched state, so that the feeding door body 19 is closed under the resilience force of the first return spring 21; the back of the feeding door body needs to be embedded with ferromagnet, so that the first electromagnet 20 can generate repulsion with the feeding door body after being electrified;
when the first electromagnet 20 is powered on, the first electromagnet 20 generates a repulsive force to the feed door body 19, and the first return spring 21 is stretched again, so that the feed door body 19 is opened; when the first electromagnet 20 is powered off, the feeding door body 19 is closed under the action of a first return spring 21;
the discharge door assembly comprises a discharge door body 22, an electric cylinder 23 and a limiting stop mechanism; one end of the electric cylinder 23 is hinged in the material mixing device 8, and the other end of the electric cylinder 23 is hinged on the inner side of the discharge door body 22;
the mixing device 8 is internally provided with an installation cavity for installing an electric cylinder 23; when the telescopic end of the electric cylinder 23 extends, the discharge door body 22 is closed, and when the telescopic end of the electric cylinder 23 retracts, the discharge door is opened; a positioning groove 30 for positioning the end part of the discharge door body 22 is further arranged in the discharge channel 13, when the telescopic end of the electric cylinder 23 extends and the discharge door body 22 is closed, the end part of the discharge door body 22 is abutted against one side of the positioning groove 30 to play a positioning role, and the discharge door body 22 is prevented from entering the mixing cavity 11;
the limiting material blocking mechanism comprises a material blocking plate 24, the material blocking plate 24 is attached to the inner wall of the discharging channel 13, a sliding groove is formed in the discharging channel 13, a sliding block 25 matched with the sliding groove is arranged on the material blocking plate 24, and a return spring 26 axially abutted against the sliding block 25 is arranged in the sliding groove;
the radial section of the sliding block 25 can be T-shaped, the sliding block 25 and the striker plate 24 can be of an integral structure, a guiding effect is achieved through the matching effect of the sliding groove and the sliding block 25, the striker plate 24 can only axially slide in the discharging channel 13 through the structure of the sliding block 25 embedded in the sliding groove, mixed powder can smoothly enter the discharging channel 13 through the striker plate 24, and the powder is prevented from floating to the position of the electric cylinder 23; when the discharge door body 22 is closed, the striker plate 24 is abutted against the discharge door body 22 under the action of the return spring 26; when the discharge door body 22 is gradually opened, the return spring 26 is compressed, and the striker plate 24 is always abutted against the discharge door body 22;
an electromagnetic assembly used for limiting the axial movement of the material baffle plate 24 is further arranged in the material mixing device 8, the electromagnetic assembly comprises a limiting rod 27 and a second electromagnet 28 used for controlling the limiting rod 27 to radially extend and retract along the discharge channel 13, a second reset spring 29 is arranged between the limiting rod 27 and the second electromagnet 28, and a limiting groove used for being matched with the limiting rod 27 is further formed in the sliding block 25;
when the second electromagnet 28 is powered on, the second electromagnet 28 generates attraction force on the limiting rod 27, and the limiting rod 27 is pulled out of the limiting groove; when the second electromagnet 28 is powered off, the limiting rod 27 extends into the limiting groove under the acting force of the second reset spring 29, the sliding block 25 is limited, the material baffle 24 cannot move, the material baffle 24 supports and limits the discharge door body 22, and the discharge door body 22 is prevented from being forced to open under the high-pressure state of the material mixing cavity 11.
The regulating valve 17 includes:
a valve housing;
the valve port is positioned in the valve shell;
the valve core is positioned at the valve port;
the valve core comprises a fixed support 31, a buffer spring 32 and a valve clack 34, wherein the fixed support 31 is installed in a valve casing, an overflowing gap 36 is formed between the valve clack 34 and a valve port, the buffer spring 32 is installed between the fixed support 31 and the valve clack 34, the fixed support 31 further comprises a guide rod 35 which penetrates through the valve clack 34, a positioning sleeve 37 is arranged on one side, facing the valve clack 34, of the fixed support 31, and the buffer spring 32 is installed in the positioning sleeve 37; when the valve clack 34 is abutted against the positioning column, a minimum overflowing gap 36 is formed between the valve clack 34 and the valve port, so that the regulating valve 17 can be prevented from being completely closed;
the two ends of the valve casing are respectively provided with an air port for communicating the pressure channel 15 and the energy accumulator 16, wherein the valve clack 34 is also provided with an extension part 33 which is abutted against the inner wall of the valve casing, the extension part 33 is provided with an air passing hole, the side wall of the valve casing is also provided with an air outlet 38, and the air outlet 38 is connected with a cleaning air pipe 39 which is communicated with the feeding hopper 7; when the valve clack 34 floats upwards, the exhaust port 38 is blocked by the extension part 33; when the flap 34 floats down, the exhaust port 38 opens.
The specific principle is as follows: when the air supply channel supplies air into the mixing cavity 11, the pressure on the lower side of the valve flap 34 is large, the valve flap 34 floats upwards, the overflowing gap 36 is increased, and high pressure in the mixing cavity 11 can enter the energy accumulator 16 through the overflowing gap 36, wherein the energy accumulator 16 can be the existing leather bag type energy accumulator 16, and the air outlet 38 is blocked at the moment; when the mixing cavity 11 discharges materials, the discharge channel 13 is opened, the gas supply channel is closed, the energy accumulator 16 supplies pressure to the mixing cavity 11, the pressure on the upper side of the valve flap 34 is high, the valve flap 34 floats downwards, the gas outlet 38 is opened, part of gas enters the cleaning gas pipe 39, then the feeding hopper 7, the first screw conveyor 9 and the feeding channel 12 are supplied with gas, the cleaning of the powder remained in the feeding hopper 7, the first screw conveyor 9 and the feeding channel 12 can be realized, all auxiliary materials can enter the mixing cavity 11, and finally can smoothly enter the mixing chamber 1, so that the final mixing quality is ensured; and in the process of delivering the auxiliary materials each time, inert gas can enter the mixing chamber 1, and waste gas generated in the mixing chamber 1 can be cleaned, so that the waste gas is discharged through the gas outlet 6, and the mixing quality is further improved.
An end cover needs to be arranged on a feeding port of the feeding hopper 7, and the end cover needs to be closed when feeding is finished, so that subsequent gas cleaning is facilitated; first screw conveyer 9 and second screw conveyer 10 all include the pay-off chamber of installation screw rod, and the top in pay-off chamber need set up the air guide groove, and when being convenient for clean, the smooth of high-pressure gas passes through, can drive the powder discharge in the pay-off chamber, and when gaseous cleaning, first screw conveyer 9 and second screw conveyer 10 can be in the starting condition, change in the smooth discharge of powder.
The banburying process comprises the following specific steps:
the method comprises the following steps: the control system controls the internal mixer to heat up to 70 ℃, the rotating speed is 60r/min, and the weight 3 is at the highest position; then the chloroprene rubber, the butadiene styrene rubber and the butadiene rubber are thrown into the feeding cavity 2 through the main feeding port 4;
step two: then, the weight 3 descends, the first banburying is started, and the temperature is gradually increased to 100-105 ℃; meanwhile, magnesium oxide, zinc oxide, modified calcium carbonate and carbon black are weighed and then placed into a feeding hopper 7, and modified polyester fibers and cotton powder are weighed and then fed into a fiber channel 40;
step three: the feeding door component is opened, the discharging door component is closed, and the first spiral conveyor 9 simultaneously conveys all auxiliary materials into the mixing cavity 11;
then the feeding door assembly is closed, the air supply pump is started to blow air into the material mixing cavity 11 along the tangential direction, the air flow generates annular rotational flow in the material mixing cavity 11, and all auxiliary materials are uniformly mixed in the annular rotational flow process;
after mixing, the air inlet channel 14 is closed, the discharge channel 13 is opened, the feed channel 12 is opened, the energy accumulator 16 releases pressure to send the mixed powder in the mixing cavity 11 to the second screw conveyor 10 along the discharge channel 13, meanwhile, part of the pressure of the energy accumulator 16 enters the feeding hopper 7 through the cleaning air pipe 39 to clean the feeding hopper 7, the first screw conveyor 9 and the feed channel 12, and the cleaned powder enters the mixing cavity 11 and is discharged from the discharge channel 13 along with the mixed powder to enter the second screw conveyor 10;
during cleaning, because partial pressure of the energy accumulator 16 enters the feeding channel 12, the pressure of the feeding channel 12 is greater than that of the mixing cavity 11, and the feeding door 19 is automatically opened;
step four: after the first banburying time is up for 5min, the weight 3 rises, and then the mixed powder is fed into a powder feeding port through a second screw conveyor 10; at the moment, as the weight 3 rises, the gas outlet 6 is in a fully opened state, and the inert gas can enter the mixing chamber 1, the waste gas generated in the mixing chamber 1 can be cleaned, and the waste gas is accelerated to be discharged through the gas outlet 6 along with the inert gas;
step five: the weight 3 is reduced again, the banburying temperature is controlled by a control system to be 95-100 ℃, and the second banburying is started; simultaneously, weighing auxiliary materials of the antioxidant RD and the accelerator DM and then putting the auxiliary materials into a feeding hopper 7;
step six: repeating the process of the third step;
step seven: after the second banburying is carried out for 5min, the weight 3 rises, the mixed powder is sent into a powder feeding port by a second screw conveyor 10, and meanwhile, a plasticizer DOP is sent into a liquid feeding port 5;
step eight: and (4) lowering the weight 3 again, controlling the banburying temperature of the system to be 100-105 ℃, and finally carrying out banburying for 3 minutes and then carrying out rubber discharge.
The internal mixing process has the advantages that: the auxiliary materials can be fully mixed in advance, and the dispersion uniformity is good after the auxiliary materials are put into the mixing chamber 1, so that the rubber mixing quality can be improved, the rubber mixing time is reduced, and the problem of poor dispersion uniformity caused by the existing direct auxiliary material adding mode is solved; the automatic feeding system has an automatic cleaning function, is high in gas energy utilization rate, and can mix, clean and purify the gas in the mixing chamber 1; can effectively improve the quality of rubber refining.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: equivalent changes made according to the structure, shape and principle of the invention shall be covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a side cut formula skewed tooth shape V belt which characterized in that: the adhesive comprises a fiber adhesive layer, wherein the raw materials of the fiber adhesive layer comprise the following components in parts by weight:
100 parts of neoprene;
10-20 parts of butadiene styrene rubber;
10-20 parts of butadiene rubber;
20-30 parts of carbon black;
1-3 parts of an anti-aging agent RD;
1-3 parts of an accelerator DM;
1-3 parts of plasticizer DOP;
2-5 parts of magnesium oxide;
2-5 parts of zinc oxide;
20-30 parts of modified calcium carbonate;
10-20 parts of modified polyester fiber;
5-10 parts of cotton powder;
the modified calcium carbonate is obtained by the following method:
crushing limestone and grinding the crushed limestone into micron-sized calcium carbonate powder, putting the fine powder into a mixture consisting of linolenic acid grease and sodium lignosulfonate, uniformly stirring, and grinding the mixture again into nano-sized calcium carbonate powder;
then adding calcium carbonate powder into the aqueous solution of polyethyleneimine, wherein the concentration of the polyethyleneimine is 5mg/ml, stirring for 30 minutes, and filtering and drying;
and then putting the mixture into the polyamic acid solution, stirring the mixture for 30 minutes, filtering the mixture to remove the solvent, and cleaning the mixture to obtain the modified calcium carbonate coated by the polyamic acid.
2. The edge-cut skewed tooth V-belt of claim 1, wherein: the modified polyester fiber is obtained by the following method:
cutting the polyester fiber into short fibers with the length of 8mm, dispersing the polyester fiber to be in a loose state, and then putting the polyester fiber into a muffle furnace at the temperature of 80 ℃ for 6min;
dispersing the heated polyester fibers to a loose state, then soaking the polyester fibers in a natural latex solution, and drying the polyester fibers after 5 min;
and then soaking the polyester fibers in phosphoric acid solutions with the mass fractions of 10%, stirring in a water bath at 50 ℃ for 1h, then washing with distilled water to neutrality, and drying at 105 ℃ for 5h.
3. A process for producing the edge-cut inclined-tooth-shaped V-belt suitable for the process of claim 1 or 2, which is characterized in that: the method comprises the following steps:
a. preparing materials: preparing a raw material of a fiber glue layer, and preparing viscose glue, polyester hard cord, cushion gum and gum dipped canvas;
b. mixing: independently mixing the raw materials of the fiber glue layer, the viscose glue and the buffer glue;
c. rolling: respectively calendering the mixed fiber glue, viscose glue and buffer glue in a calender;
e. molding: firstly, sticking gum dipping canvas on a mould to form a rubberized fabric layer, then sticking buffer glue to form a buffer glue layer, then sticking the viscose to form a viscose layer, spirally winding polyester hard cords on the outer surface of the viscose layer to enable the polyester hard cords to be longitudinally arranged, wherein the longitudinal arrangement refers to the length direction arrangement of a triangular belt, and finally sticking a fiber glue layer to form a belt drum;
g. and (3) vulcanization: putting the formed belt drum on a helical tooth-shaped rubber sleeve mold, and putting the belt drum into a vulcanizing tank for vulcanization;
h. cutting: controlling the cutting angle and width to cut the V-belt into required size.
4. The process for producing the edge-cut inclined-tooth-shaped V-belt according to claim 3, wherein the process comprises the following steps: the rubber mixing step of the fiber rubber layer comprises the following steps:
banburying: the initial temperature of an internal mixer is 70 ℃, the rotating speed is 60r/min, firstly, neoprene, butadiene-styrene rubber and butadiene rubber are added, and the temperature is controlled to be 100-105 ℃; adding magnesium oxide, zinc oxide, modified calcium carbonate, carbon black, modified polyester fiber and cotton powder after 5min, and controlling the temperature at 95-100 ℃; adding antioxidant RD, promoter and plasticizer after 5min, and controlling the temperature at 100-105 deg.C;
open smelting: the initial roll temperature of an open mill is 60 ℃, the rotating speed is 40r/min, the masterbatch obtained by banburying is thinned for 3 times, the roll gap is 1mm, the triangular package is performed for 6 times, the roll gap is 0.3mm, and after 2 times of rolling, the masterbatch is rolled, the roll gap is 1.5mm, and the fiber adhesive is obtained.
5. The process for producing the edge-cut inclined-tooth-shaped V-belt according to claim 4, wherein the process comprises the following steps: the internal mixer comprises an automatic feeding system, an internal mixing system and a control system, wherein the control system is used for controlling the running states of the automatic feeding system and the internal mixing system;
the banburying system comprises:
an internal mixing chamber (1);
an upper ram assembly;
the upper top plug assembly comprises a feeding cavity (2) and a weight (3) positioned in the feeding cavity (2), a main feeding port (4), a liquid feeding port (5), a powder feeding port and an air outlet (6) are arranged on the feeding cavity (2), the main feeding port (4) is connected with a main feeding hopper (7), the feeding port is connected with the liquid feeding hopper (7), a dust filtering net is arranged on the air outlet (6), and an air purification device is connected to the air outlet (6);
automatic feeding system includes:
a feeding hopper (7) for feeding auxiliary materials;
the mixing device (8) comprises a feeding channel (12), a discharging channel (13), an air inlet channel (14), a pressure channel (15), a fiber channel (40) and a mixing cavity (11);
the first screw conveyor (9) is used for conveying the materials in the feeding hopper (7) into the mixing device (8);
the second screw conveyor (10) is used for feeding the mixed materials in the mixing device (8) into the internal mixer;
the mixing cavity (11) is of a circular structure, the pressure channel (15) is located at the top of the mixing cavity (11), the discharge channel (13) is located at the bottom of the mixing cavity (11), the air inlet channel (14) is tangentially communicated with the mixing cavity (11), an air supply pump for supplying inert gas is arranged on the air inlet channel (14), and the feeding channel (12) and the fiber channel (40) are also communicated with the mixing cavity (11);
a feeding door assembly for controlling the opening and closing of the feeding channel (12) and a discharging door assembly for controlling the opening and closing of the discharging channel (13) are also arranged in the mixing cavity (11);
the pressure channel (15) is connected with an energy accumulator (16), the pressure channel (15) is provided with a regulating valve (17), the mixing cavity (11) is also internally provided with a dustproof filter screen covering the port of the pressure channel (15), and the mixing cavity (11) is also internally provided with a guide plate (18) positioned at the port of the pressure channel (15).
6. The production process of the edge-cutting type inclined-tooth-shaped triangular belt according to claim 5, characterized in that: the feeding door assembly comprises a feeding door body (19), one end of the feeding door body (19) is hinged to the mixing device (8), a first electromagnet (20) used for controlling the other end of the feeding door body (19) to be opened and closed is further arranged in the mixing device (8), and a first reset spring (21) which is abutted to the back face of the feeding door body (19) is further arranged in the mixing device (8);
when the first electromagnet (20) is electrified, the first electromagnet (20) generates repulsive force on the feeding door body (19), and the first return spring (21) is stretched, so that the feeding door body (19) is opened; when the first electromagnet (20) is powered off, the feeding door body (19) is closed under the action of a first return spring (21).
7. The production process of the edge-cutting type helical-tooth-shaped triangular belt according to claim 6, characterized in that: the discharge door assembly comprises a discharge door body (22), an electric cylinder (23) and a limiting stop mechanism; one end of the electric cylinder (23) is hinged in the mixing device (8), and the other end of the electric cylinder (23) is hinged on the inner side of the discharging door body (22);
the limiting material blocking mechanism comprises a material blocking plate (24), the material blocking plate (24) is attached to the inner wall of the discharging channel (13), a sliding groove is formed in the discharging channel (13), a sliding block (25) matched with the sliding groove is arranged on the material blocking plate (24), and a return spring (26) axially abutted against the sliding block (25) is arranged in the sliding groove;
an electromagnetic assembly used for limiting the axial movement of the material baffle plate (24) is further arranged in the material mixing device (8), the electromagnetic assembly comprises a limiting rod (27) and a second electromagnet (28) used for controlling the limiting rod (27) to stretch and retract along the radial direction of the discharging channel (13), a second reset spring (29) is arranged between the limiting rod (27) and the second electromagnet (28), and a limiting groove used for being matched with the limiting rod (27) is further formed in the sliding block (25);
when the second electromagnet (28) is electrified, the second electromagnet (28) generates attraction force on the limiting rod (27), and the limiting rod (27) is separated from the limiting groove; when the second electromagnet (28) is powered off, the limiting rod (27) extends into the limiting groove under the action force of the second return spring (29).
8. The production process of the edge-cutting type helical-tooth-shaped triangular belt according to claim 7, characterized in that: the regulating valve (17) comprises:
a valve housing;
the valve port is positioned in the valve shell;
the valve core is positioned at the valve port;
the valve core comprises a fixed support (31), a buffer spring (32) and a valve clack (34), the fixed support (31) is installed in a valve casing, an overflowing gap (36) is formed between the valve clack (34) and a valve port, the buffer spring (32) is installed between the fixed support (31) and the valve clack (34), the fixed support (31) further comprises a guide rod (35) penetrating through the valve clack (34), a positioning sleeve (37) is arranged on one side, facing the valve clack (34), of the fixed support (31), and the buffer spring (32) is installed in the positioning sleeve (37); when the valve clack (34) is abutted against the positioning column, a minimum overflowing gap (36) is formed between the valve clack (34) and the valve port;
wherein, the valve flap (34) is also provided with an extension part (33) which is abutted against the inner wall of the valve casing, the extension part (33) is provided with an air passing hole, the side wall of the valve casing is also provided with an air outlet (38), and the air outlet (38) is connected with a cleaning air pipe (39) which is communicated with the feeding hopper (7); when the valve clack (34) floats upwards, the exhaust port (38) is blocked by the extension part (33); when the valve flap (34) floats down, the exhaust port (38) opens.
9. The process for producing the edge-cut inclined-tooth-shaped V-belt according to claim 8, wherein the process comprises the following steps: the banburying process comprises the following specific steps:
the method comprises the following steps: the control system controls the internal mixer to heat up to 70 ℃, the rotating speed is 60r/min, and the weight (3) is at the highest position; then the chloroprene rubber, the butadiene styrene rubber and the butadiene rubber are put into the feeding cavity (2) through the main feeding port (4);
step two: then the weight (3) descends, and the first banburying is started, and the temperature is gradually increased to 100-105 ℃; meanwhile, magnesium oxide, zinc oxide, modified calcium carbonate and carbon black are weighed and then placed into a feeding hopper (7), and modified polyester fibers and cotton powder are weighed and then fed into the feeding hopper through a fiber channel (40);
step three: the feeding door component is opened, the discharging door component is closed, and the first spiral conveyor (9) simultaneously conveys all auxiliary materials into the mixing cavity (11);
then the feeding door assembly is closed, the air supply pump is started to blow air into the material mixing cavity (11) along the tangential direction, the air flow generates annular rotational flow in the material mixing cavity (11), and all auxiliary materials are uniformly mixed in the annular rotational flow process;
after mixing, the air inlet channel (14) is closed, the discharge channel (13) is opened, the feeding channel (12) is opened, the energy accumulator (16) releases pressure to send mixed powder in the mixing cavity (11) into the second screw conveyor (10) along the discharge channel (13), meanwhile, partial pressure of the energy accumulator (16) enters the feeding hopper (7) through the cleaning air pipe (39) to clean the feeding hopper (7), the first screw conveyor (9) and the feeding channel (12), and the cleaned powder enters the mixing cavity (11) and is discharged from the discharge channel (13) along with the mixed powder to enter the second screw conveyor (10);
step four: after the first banburying time is up for 5min, the weight (3) rises, and then the mixed powder is fed into a powder feeding port through a second screw conveyor (10);
step five: the weight (3) is lowered again, the banburying temperature is controlled by a control system to be 95-100 ℃, and the second banburying is started; simultaneously, weighing auxiliary materials of the antioxidant RD and the accelerator DM and then putting the auxiliary materials into a feeding hopper (7);
step six: repeating the process of the third step;
step seven: after the secondary banburying is carried out for 5min, the weight (3) rises, the mixed powder is sent into a powder feeding port by a second screw conveyor (10), and meanwhile, a plasticizer DOP is sent into a liquid feeding port (5);
step eight: and (3) lowering the weight again, controlling the banburying temperature of the system to be 100-105 ℃, and finally carrying out banburying for 3 minutes and then carrying out rubber discharge.
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| CN202210343226.6A CN114685871B (en) | 2022-04-02 | 2022-04-02 | Edge-cutting type helical-tooth-shaped triangular belt and production process thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266751A (en) * | 2017-07-14 | 2017-10-20 | 浙江保尔力胶带有限公司 | The production technology of oblique tooth-shaped edge-cut V-belt |
| CN111040252A (en) * | 2019-12-11 | 2020-04-21 | 中国科学院宁波材料技术与工程研究所 | Modified calcium carbonate and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266751A (en) * | 2017-07-14 | 2017-10-20 | 浙江保尔力胶带有限公司 | The production technology of oblique tooth-shaped edge-cut V-belt |
| CN111040252A (en) * | 2019-12-11 | 2020-04-21 | 中国科学院宁波材料技术与工程研究所 | Modified calcium carbonate and preparation method and application thereof |
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