阅读说明：本技术 一种橡胶内胎生产工艺及其冷却设备 (Production process of rubber inner tube and cooling equipment thereof ) 是由 杨欣慈 隋福进 王春艳 于 2020-05-16 设计创作，主要内容包括：本发明公开了一种橡胶内胎生产工艺及其冷却设备,属于橡胶内胎加工技术领域,其包括设置于混炼机一端的水槽,水槽内设置有呈V型设置的传输网,所述水槽的一侧设置有冷却机构；所述冷却机构包括冷却箱,冷却箱内的中部固设有两块竖向设置的挡板,挡板的底部和冷却箱内底部之间留有间隙,两块挡板之间形成供水进入的进水通道,两块挡板和冷却箱的侧壁之间形成供水流出的出水通道,冷却箱的顶部固设有与进水通道内连通进水管,进水管上固设有水泵,冷却箱位于进水通道内固设有冷却管,冷却管内设置有冷却液,冷却箱的顶部固设有两根循环管,循环管和出水通道内连通,冷却箱位于出水通道内固设有多块制冷片,本发明具有防止胶片早期硫化的效果。(The invention discloses a production process of a rubber inner tube and cooling equipment thereof, belonging to the technical field of rubber inner tube processing, and comprising a water tank arranged at one end of a mixing roll, wherein a transmission net arranged in a V shape is arranged in the water tank, and a cooling mechanism is arranged at one side of the water tank; the cooling mechanism comprises a cooling box, two vertically arranged baffles are fixedly arranged at the middle part in the cooling box, a gap is reserved between the bottom of each baffle and the bottom in the cooling box, a water inlet channel for water to enter is formed between the two baffles, a water outlet channel for water to flow out is formed between the two baffles and the side wall of the cooling box, a water inlet pipe communicated with the water inlet channel is fixedly arranged at the top of the cooling box, a water pump is fixedly arranged on the water inlet pipe, a cooling pipe is fixedly arranged in the water inlet channel of the cooling box, cooling liquid is arranged in the cooling pipe, two circulating pipes are fixedly arranged at the top of the cooling box, the circulating pipes are communicated with the water outlet channel, and a plurality of refrigerating sheets are fixedly arranged in the water outlet channel of the cooling box.)

1. A production process of a rubber inner tube is characterized by comprising the following steps: the method comprises the following steps:

s1, batching: mixing various raw materials for producing rubber according to a certain proportion: wherein the rubber material accounts for 65-75%, the zinc oxide accounts for 4-6%, the carbon black N330 accounts for 8-12%, the sulfur accounts for 2-4%, and the accelerant TMTD accounts for 2-6%;

s2, mixing: adding rubber material, zinc oxide, carbon black and the like into a mixing roll for plastication, then enabling mixed rubber material discharged by plastication to pass through a compression roller group of the mixing roll, and extruding the rubber material into rubber sheets by the compression roller group;

s3, cooling: cooling the rubber sheet discharged from the mixer to ensure that the temperature of the rubber sheet is less than 45 ℃ and preventing the rubber sheet from being vulcanized in advance; the rubber sheets discharged from the mixing roll are introduced into a conveying net of a water tank and move downwards along with the conveying net to the water tank, the water in the water tank cools the rubber sheets conveyed on the water tank, a cooling box is arranged on one side of the water tank, a cooling pipe filled with cooling liquid and a refrigerating sheet are arranged in the cooling box, and the water in the water tank flows back to the water tank after being introduced into the cooling box for refrigeration;

s4, air drying: blowing air to the rubber sheet passing out of the water tank to blow off the water on the rubber sheet, so that the rubber material is kept dry and the water on the rubber material is reduced;

s5, storage: storing the cooled and air-dried rubber sheet, so that the rubber material is recovered from fatigue, mechanical stress borne during mixing is relaxed, the shrinkage of the rubber material is reduced, the compounding agent is continuously diffused in the parking process, uniform dispersion is promoted, and bonding rubber is further generated between the rubber and the carbon black;

s6, extrusion: adding the adhesive tape into an extruder, and extruding the adhesive tape into an inner tube by the extruder after the adhesive tape is hot-melted in the extruder;

s7, coding: printing the model, specification, number and the like of the inner tube on the inner tube;

a marking device is arranged in the conveying direction of the inner tube and prints the model, specification, serial number and the like on the inner tube;

s8, inner tube pressing mouth: cutting an installation opening on the inner tube, and installing an air nozzle at the installation opening;

s9, joint: after the inner tube is pressed by an extruder, the inner tube needs to be butted on an inner tube splicer to form an annular inner tube semi-finished product.

2. The process for producing a rubber inner tube according to claim 1, wherein: in S2, the temperature of mixed rubber material in the mixing roll 1 is controlled between 75-85 ℃, the temperature of the compression roller set is controlled between 50-60 ℃, the diameter of the film is less than or equal to 150MM, and the length of the film is 700-900 MM.

3. The process for producing a rubber inner tube according to claim 1, wherein: in S6, the temperature of the extruder body is 30-45 ℃, the temperature of the extruder head is 80-90 ℃, the temperature of the die is 90-100 ℃, and the rotating speed of the screw in the extruder is less than 30 revolutions per minute;

the extruder is connected with a powder sprayer, the top of the powder sprayer is provided with a hopper, 325-mesh dry talcum powder is added into the hopper, and the powder sprayer sprays the talcum powder into the formed inner tube.

4. The utility model provides a cooling arrangement of rubber inner tube, is including setting up in basin (2) of mixing roll (1) one end, and basin (2) are used for bearing water, are provided with transmission net (21) that are the V type setting in basin (2), and transmission net (21) are by both ends to middle part downward sloping to basin (2) in, its characterized in that:

a cooling mechanism (3) is arranged on one side of the water tank (2);

the cooling mechanism (3) comprises a cooling box (31) fixedly arranged on one side of the water tank (2), two vertically arranged baffles (32) are fixedly arranged in the middle of the cooling box (31), the tops of the baffles (32) are fixedly connected with the top of the cooling box (31), a gap is reserved between the bottom of each baffle (32) and the bottom of the cooling box (31), a water inlet channel (33) for water to enter is formed between the two baffles (32), a water outlet channel (34) for water to flow out is formed between the side walls of the two baffles (32) and the cooling box (31), a water inlet pipe (311) is fixedly arranged at the top of the cooling box (31), a water pump (312) is fixedly arranged on the water inlet pipe (311), the water inlet pipe (311) is communicated with the water inlet channel (33), a cooling pipe (331) is fixedly arranged at the top of the cooling box (31) positioned on the water inlet channel (33), and cooling liquid is arranged in the cooling pipe (331, two circulating pipes (312) are fixedly arranged at the top of the cooling box (31) positioned in the water outlet channel (34), the circulating pipes (312) are communicated with the water outlet channel (34), and a plurality of refrigerating sheets (35) are fixedly arranged in the cooling box (31) positioned in the water outlet channel (34).

5. The cooling apparatus for a rubber inner tube according to claim 4, wherein: two compression rollers (22) with the same height are fixedly arranged in the middle of the water tank (2), the axial direction of each compression roller (22) is perpendicular to the transmission direction of the transmission net (21), and two ends of each compression roller (22) are abutted against the transmission net (21) so that the transmission net (21) is positioned in the middle of the water tank (2) for horizontal transmission.

6. The cooling apparatus for a rubber inner tube according to claim 4, wherein: the refrigeration piece (35) is obliquely and fixedly arranged between the inner wall of the cooling box (31) and the side wall of the baffle plate (32), and each refrigeration piece (35) is provided with a through hole (351) for water to pass through.

7. The cooling apparatus for a rubber inner tube according to claim 4, wherein: through hole (321) have all been seted up in the position that two baffles (32) are close to the top, solenoid valve (322) have been set firmly in through hole (321) department, are provided with temperature sensor (36) in basin (2), and temperature sensor (36) are used for the temperature of real-time detection basin (2) normal water, and when the temperature of water in basin (2) was too high, control solenoid valve (322) were opened.

8. The cooling apparatus for a rubber inner tube according to claim 4, wherein: air-dry mechanism (4) including setting firmly air pump (41) in basin (2) one side, be connected to blast pipe (42) on air pump (41), set firmly many jet-propelled pipes (43) that extend to in transmission net (21) on blast pipe (42), jet-propelled pipe (43) evenly set firmly shower nozzle (431) that a plurality of orientation conveying net set up along its axial, set firmly jet-propelled barrier (44) that extend to the conveying net top on blast pipe (42).

9. The cooling apparatus for a rubber inner tube according to claim 4, wherein:

one end, far away from the mixing roll (1), of the water tank (2) is connected with a drying mechanism (5), the drying mechanism (5) comprises a support frame (51), a material guide net (52) is arranged at the top of the support frame (51), the material guide net (52) transmits a film transmitted by a transmission net forwards, a detection assembly (53), a drying assembly (54) and a cooling assembly (55) are sequentially arranged on the support frame (51), and the drying assembly (54) is symmetrically arranged at the top and the bottom of the support frame (51);

the drying component (54) comprises a protective cover (541) which covers the top and the bottom of a support frame (51), a blower (542) is fixedly arranged at the top of the protective cover (541), a heating wire (543) is fixedly arranged below the blower (542) at the top of the support frame (51), and a horizontally arranged protective screen (544) is fixedly arranged between a material guide net (52) and the heating wire (543) of the support frame (51).

10. The cooling apparatus for a rubber inner tube according to claim 9, wherein:

the cooling assembly (55) comprises an air cooler (551) fixedly arranged at the top of the protective cover (541), a main pipeline (552) is fixedly arranged on the air cooler (551), the main pipeline (552) extends into the protective cover (541) and is fixedly connected with a plurality of C-shaped branch pipelines (553), the material guide net (52) penetrates through the formed branch pipelines (553), and a plurality of air nozzles (554) are uniformly arranged on one side, facing the material guide net (52), in the branch pipelines (553);

the detection assembly (53) comprises an infrared moisture detector (531) arranged at one end, close to the water tank (2), of the support frame (51), the infrared moisture detector (531) is used for detecting moisture on the air-dried film in real time, and when the moisture value in the film is detected to be higher than a preset value, the air blower (542), the heating wire (543) and the air cooler (551) are controlled to work.

Technical Field

The invention relates to the technical field of rubber inner tube production, in particular to a rubber inner tube production process and cooling equipment thereof.

Background

The function of the tire is to establish an elastic contact system between the wheel and the road surface, so that the wheel can roll lightly and quickly. Most tires are rubber products, and the structural forms of the tires are not limited to inflatable tires and solid tires. The existing solid tire is made of an integral uniform material, namely, the existing solid tire needs to be elastic and wear-resistant and compression-resistant, so that the requirement on the material is high, the existing solid tire is heavy and does not meet the requirement on light rotation of the wheel, and most wheels are not adopted.

Most of pneumatic tires comprise an inner tube and an outer tube, wherein the inner tube is filled with compressed air, the outer tube is supported by the inner tube and protected by the outer tube, and the compressed air plays an elastic role, so that an elastic contact system is established between a wheel and a road surface by the inner tube, the outer tube and the outer tube. The inner tube, commonly known as the lining tube, is a circular elastic tube with a valve for inflating the tube to maintain a certain pressure in the tube. The inner tube should have good air tightness, heat resistance, elasticity, aging resistance and small permanent deformation, and is generally made of butyl rubber.

When the inner tube is processed, raw materials are required to be added into a mixing roll firstly, the raw materials are processed into films through the mixing roll, the films are required to be cooled by water after coming out of the mixing roll for preventing the films from being vulcanized early, the films come out of the mixing roll need to pass through a water tank, and the films cannot be cooled completely due to the fact that the temperatures of the films are high and the temperature of the water in the water tank is increased, so that the processing of the next process is influenced.

Disclosure of Invention

The invention aims to provide a production process of a rubber inner tube, which achieves the effect of completely cooling a rubber sheet and the effect of preventing the rubber sheet from being vulcanized early.

The technical purpose of the invention is realized by the following technical scheme:

a production process of a rubber inner tube comprises the following steps:

s1, batching: mixing various raw materials for producing rubber according to a certain proportion: wherein the rubber material accounts for 65-75%, the zinc oxide accounts for 4-6%, the carbon black N330 accounts for 8-12%, the sulfur accounts for 2-4%, and the accelerant TMTD accounts for 2-6%;

s2, mixing: adding rubber material, zinc oxide, carbon black and the like into a mixing roll for plastication, then enabling mixed rubber material discharged by plastication to pass through a compression roller group of the mixing roll, and extruding the rubber material into rubber sheets by the compression roller group;

s3, cooling: cooling the rubber sheet discharged from the mixer to ensure that the temperature of the rubber sheet is less than 45 ℃ and preventing the rubber sheet from being vulcanized in advance; the rubber sheets discharged from the mixing roll are introduced into a conveying net of a water tank and move downwards along with the conveying net to the water tank, the water in the water tank cools the rubber sheets conveyed on the water tank, a cooling box is arranged on one side of the water tank, a cooling pipe filled with cooling liquid and a refrigerating sheet are arranged in the cooling box, and the water in the water tank flows back to the water tank after being introduced into the cooling box for refrigeration;

s4, air drying: blowing air to the rubber sheet passing out of the water tank to blow off the water on the rubber sheet, so that the rubber material is kept dry and the water on the rubber material is reduced;

s5, storage: storing the cooled and air-dried rubber sheet, so that the rubber material is recovered from fatigue, mechanical stress borne during mixing is relaxed, the shrinkage of the rubber material is reduced, the compounding agent is continuously diffused in the parking process, uniform dispersion is promoted, and bonding rubber is further generated between the rubber and the carbon black;

s6, extrusion: adding the adhesive tape into an extruder, and extruding the adhesive tape into an inner tube by the extruder after the adhesive tape is hot-melted in the extruder;

s7, coding: and printing the model, specification, serial number and the like of the inner tube on the inner tube. A marking device is arranged in the conveying direction of the inner tube and prints the model, specification, serial number and the like on the inner tube;

s8, inner tube pressing mouth: cutting an installation opening on the inner tube, and installing an air nozzle at the installation opening;

s9, joint: after the inner tube is pressed by an extruder, the inner tube needs to be butted on an inner tube splicer to form an annular inner tube semi-finished product.

Through adopting above-mentioned scheme, the mixing roll flows in the moisture in with the basin and lets in the conveying net of basin from the film of mixing roll ejection of compact on, follow conveying net downstream to the basin in, the water in the basin is to the film cooling of transmitting on the basin, the film passes from the basin, thereby reach the effect to the film cooling, one side of basin is provided with the cooler bin, be provided with cooling tube and the refrigeration piece that are equipped with the coolant liquid in the cooler bin, the water in the basin flows back to the basin after letting in the cooler bin refrigeration, the temperature risees after water and the film contact in the basin, let in the water in the basin in the cooler bin, cooling tube and the refrigeration piece in the cooler bin cool down water, let in the basin water after will cooling again, can prevent that the basin normal temperature from rising because of contacting with the film, to the film cooling to the temperature that accords with the standard.

The invention is further configured to: in S2, the temperature of the mixed rubber material in the mixing roll 1 is controlled between 75 ℃ and 85 ℃, the temperature of the compression roller group 22 is controlled between 50 ℃ and 60 ℃, the diameter of the film is less than or equal to 150MM, and the length of the film is 700 MM to 900 MM.

By adopting the scheme, the temperature of the mixed rubber material in the mixing roll 1 is controlled between 75 ℃ and 85 ℃, so that the rubber is changed from a tough high-elasticity state to a soft plastic state, the elastoplasticity of the rubber is changed, and the rubber material is conveniently extruded into a rubber sheet.

The invention is further configured to: in S6, the temperature of the extruder body is 30-45 ℃, the temperature of the extruder head is 80-90 ℃, the temperature of the die is 90-100 ℃, and the rotating speed of the screw in the extruder is less than 30 revolutions per minute; the extruder is connected with a powder sprayer, the top of the powder sprayer is provided with a hopper, 325-mesh dry talcum powder is added into the hopper, and the powder sprayer sprays the talcum powder into the formed inner tube.

By adopting the scheme, the rubber sheet entering the extruder is gradually heated, the melting speed of the rubber sheet is accelerated, the rubber sheet sliding to the head along with the screw is completely melted into liquid, and finally the rubber sheet is extruded from the mouth shape to form the inner tube; the powder sprayer sprays the talcum powder into the formed inner tube so that the inner tube is not adhered together.

One object of the present invention is to provide a cooling apparatus for a rubber inner tube, which achieves the effect of completely cooling a rubber sheet and the effect of preventing the rubber sheet from being vulcanized in an early stage.

A cooling device for a rubber inner tube comprises a water tank arranged at one end of a mixing roll, wherein the water tank is used for bearing water, a transmission net which is arranged in a V shape is arranged in the water tank, and the transmission net is downwards inclined into the water tank from two ends to the middle part; a cooling mechanism is arranged on one side of the water tank; cooling body is including setting firmly the cooler bin in basin one side, middle part in the cooler bin has set firmly the baffle of two vertical settings, the top of baffle and the top fixed connection of cooler bin, leave the clearance between the bottom of baffle and the cooler bin bottom, form the inlet channel that supplies water to get into between two baffles, form the outlet channel that supplies water to flow between the lateral wall of two baffles and cooler bin, the top of cooler bin has set firmly the inlet tube, the water pump has set firmly on the inlet tube, intercommunication in inlet tube and the inlet channel, the cooler bin is located inlet channel's top and has set firmly the cooling tube, be provided with the coolant liquid in the cooling tube, the top that the cooler bin is located outlet channel has set firmly two circulating pipes, communicate in circulating pipe and the outlet channel, the cooler bin is located the outlet channel and has set firmly the polylith refrigeration piece.

By adopting the scheme, the film transmitted by the transmission net passes through the water tank, and the water in the water tank cools the film until the temperature of the film is lower than 45 ℃; the water pump is taken out the water in the basin in the inlet tube, enter into the inlet channel through the inlet tube at last, the coolant liquid in the inlet channel is cooled down the water that enters into in the inlet channel, the water after the cooling flows through outlet channel, the refrigeration piece in the outlet channel is again to the water cooling, the water after the cooling flows back to in the basin through the circulating line, make the water in the basin circulate to the basin after cooling through the coolant liquid in the cooler bin and refrigeration piece, prevent that the water in the basin from rising temperature because of contacting with the film, the effect to the film complete cooling has been reached, the effect of preventing the early vulcanization of film has been reached.

The invention is further configured to: two compression rollers which are arranged at the same height are fixedly arranged in the middle of the water tank, the axial direction of each compression roller is perpendicular to the transmission direction of the transmission net, and the two ends of each compression roller are abutted against the transmission net, so that the transmission net is horizontally transmitted in the middle of the water tank.

By adopting the scheme, the transmission net is positioned in the middle of the water tank for horizontal transmission, so that the time for transmitting the films in water is prolonged, the films on the transmission net are fully contacted with water, and the films are cooled more thoroughly.

The invention is further configured to: the refrigeration pieces are obliquely and fixedly arranged between the inner wall of the cooling box and the side wall of the baffle, and each refrigeration piece is provided with a through hole for water to pass through.

Through adopting above-mentioned scheme, the refrigeration piece slope sets up the area of contact that can increase water and refrigeration piece, makes the refrigeration piece fully cool off water, and the through-hole is convenient for water from the bottom of cooler bin to the top flow.

The invention is further configured to: the through holes are formed in the positions, close to the top, of the two baffles, the electromagnetic valves are fixedly arranged at the positions of the through holes, temperature sensors are arranged in the water tank and used for detecting the temperature of water in the water tank in real time, and when the temperature of the water in the water tank is too high, the electromagnetic valves are controlled to be opened.

Through adopting above-mentioned scheme, temperature sensor real-time detection basin normal water's temperature, and compare the temperature value that detects with the default, if set up the default temperature value and be, when the temperature value that detects is greater than the ℃ when, control solenoid valve opens, make the water in the exhalant canal flow back to in the inhalant canal through the through-hole, carry out the secondary cooling to water, make water once more with cooling tube and refrigeration piece contact, make the temperature of water reduce, thereby make the water in the basin remain the low temperature throughout, prevent that the temperature in the basin from increasing because of the film.

The invention is further configured to: air-dry mechanism is connected to the blast pipe including setting firmly the air pump in basin one side on the air pump, has set firmly many jet-propelled pipes that extend to in the transmission network on the blast pipe, and the jet-propelled pipe evenly sets firmly a plurality of shower nozzles that set up towards the conveying net along its axial, sets firmly the jet-propelled barrier that extends to the conveying net top on the blast pipe.

Through adopting above-mentioned scheme, when the film follows the transmission of conveying net outdated, the air current that the shower nozzle on the air blast pipe produced the air pump is to the bottom jet-propelled of film, and the air-jet barrier is to the top jet-propelled of film, and the air current blows off the water on the film, air-dries the film.

The invention is further configured to: one end of the water tank, which is far away from the mixing roll, is connected with a drying mechanism, the drying mechanism comprises a support frame, the top of the support frame is provided with a material guiding net, the material guiding net transmits the film transmitted by the conveying net forwards, the support frame is sequentially provided with a detection assembly, a drying assembly and a cooling assembly, and the drying assembly is symmetrically arranged at the top and the bottom of the support frame; the drying component comprises a protective cover which is covered on the top and the bottom of the support frame, the top of the protective cover is fixedly provided with a blower, the top of the support frame is positioned below the blower, and a heating wire is fixedly arranged below the support frame, and the support frame is positioned between the material guide net and the heating wire and is fixedly provided with a horizontally arranged protective net.

By adopting the scheme, when the heating wire works, the blower blows downwards, so that the air drives the heat of the heating wire to flow from the meshes of the protective net to the films on the material guide net, and the material guide net is dried.

The invention is further configured to: the cooling assembly comprises an air cooler fixedly arranged at the top of the protective cover, a main pipeline is fixedly arranged on the air cooler, the main pipeline extends into the protective cover and is fixedly connected with a plurality of C-shaped branch pipelines, the material guide net penetrates through the formed branch pipelines, and a plurality of air nozzles are uniformly arranged on one side, facing the material guide net, in the branch pipelines; the detection assembly comprises an infrared moisture detector arranged at one end, close to the water tank, of the support frame, the infrared moisture detector is used for detecting moisture on the air-dried film in real time, and when the moisture value in the film is detected to be higher than a preset value, the air blower, the heating wire and the air cooler are controlled to work.

By adopting the scheme, after the drying component dries the film, the film is conveyed forwards, and cold air generated by the air cooler blows upwards to the conveyor belt through the air injection pipe to cool the dried film, so that the film is prevented from being vulcanized due to high temperature during drying; the infrared moisture detector is used for detecting moisture on the film after air drying in real time, and when the moisture value in the film is higher than the preset value, the work of the blower, the heating wire and the air cooler is controlled to dry and cool the film, and when the moisture value on the film is always lower than the preset value, the blower, the heating wire and the air cooler do not work, so that electric energy is not wasted.

In conclusion, the invention has the following beneficial effects:

1. a cooling box is arranged on one side of a water tank, two vertically arranged baffles are fixedly arranged at the middle part in the cooling box, the top of each baffle is fixedly connected with the top of the cooling box, a gap is reserved between the bottom of each baffle and the bottom in the cooling box, a water inlet channel for water to enter is formed between the two baffles, a water outlet channel for water to flow out is formed between the two baffles and the side wall of the cooling box, a water inlet pipe is fixedly arranged at the top of the cooling box, a water pump is fixedly arranged on the water inlet pipe and communicated with the water inlet channel, a cooling pipe is fixedly arranged at the top of the cooling box on the water inlet channel, cooling liquid is arranged in the cooling pipe, two circulating pipes are fixedly arranged at the top of the water outlet channel of the cooling box, the circulating pipes are communicated with the water outlet channel, a plurality of refrigerating fins are fixedly arranged in the water outlet channel of the cooling box, the water pump pumps, the cooling liquid in the water inlet channel cools the water entering the water inlet pipeline, the cooled water flows out through the water outlet channel, the refrigerating sheet in the water outlet channel cools the water again, the cooled water flows back to the water tank through the circulating pipe, the water in the water tank is cooled by the cooling liquid in the cooling box and the refrigerating sheet and then circulates to the water tank, the water in the water tank is prevented from being heated after contacting with the film, the effect of completely cooling the film is achieved, and the effect of preventing the film from being vulcanized early is achieved;

2. through all having seted up the through hole through the position that is close to the top at two baffles, through hole department has set firmly the solenoid valve, be provided with temperature sensor in the basin, temperature sensor is used for the temperature of real-time detection basin normal water, when the temperature degree in the basin is too high, control solenoid valve opens, temperature sensor real-time detection basin normal water's temperature, and compare the temperature value that detects with the default, if set up the preset temperature value and be, when the temperature value that detects is greater than the ℃ C, control solenoid valve opens, make the water in the exhalant canal flow back to in the inhalant canal through the through-hole, carry out the secondary cooling to water, make water once more with the cooling tube and the contact of refrigeration piece, make the temperature of water reduce, thereby make the water in the basin remain low temperature throughout, prevent that the temperature in the.

Drawings

FIG. 1 is a flow chart of a process for producing a rubber inner tube;

FIG. 2 is a schematic view of a cooling apparatus for a rubber inner tube;

FIG. 3 is a cross-sectional view of the sink;

FIG. 4 is a cross-sectional view of the cooling mechanism;

fig. 5 is a sectional view of the drying mechanism.

In the figure, 1, a mixer; 2. a water tank; 21. a transmission network; 22. a compression roller; 3. a cooling mechanism; 31. a cooling tank; 311. a water inlet pipe; 312. a water pump; 312. a circulation pipe; 32. a baffle plate; 321. a through hole; 322. an electromagnetic valve; 33. a water inlet channel; 331. a cooling tube; 34. a water outlet channel; 35. a refrigeration plate; 351. a through hole; 36. a temperature sensor; 4. an air drying mechanism; 41. an air pump; 42. an exhaust pipe; 43. a gas ejector tube; 431. a spray head; 44. an air injection barrier; 5. a drying mechanism; 51. a support frame; 52. a material guiding net; 53. a detection component; 531. an infrared moisture detector; 54. a drying assembly; 541. a protective cover; 542. a blower; 543. an electric heating wire; 544. a protective net; 55. a cooling assembly; 551. an air cooler; 552. a main pipeline; 553. branch pipelines; 554. and (4) an air outlet.

Detailed Description

A process for producing a rubber inner tube, which is shown in fig. 1, and comprises the following steps:

s1, batching: mixing various raw materials for producing rubber according to a certain proportion: weighing raw materials of the inner tube to ensure that all the raw materials are mixed according to requirements strictly so as to ensure that the quality of the inner tube meets the requirements; wherein the rubber material accounts for 65-75%, the zinc oxide accounts for 4-6%, the carbon black N330 accounts for 8-12%, the sulfur accounts for 2-4%, the accelerant TMTD accounts for 2-6%, and the zinc oxide is added to reduce the water content in the raw materials, so that the generation of bubbles after the inner tube is formed is prevented, and the quality of the inner tube is not influenced.

S2, mixing: adding the rubber material, zinc oxide, carbon black and the like into the mixing roll 1 for plastication, then passing the mixed rubber material discharged by plastication through a roller set 22 of the mixing roll 1, and extruding the rubber material into rubber sheets by the roller set 22. Manually turning the rubber sheet formed by the rubber material to extrude the rubber sheet for 3-5 times between the compression roller sets 22, and turning and refining the rubber sheet so as to improve the quality of the rubber sheet; meanwhile, adding sulfur, an accelerant and the like into the mixing roll 1 in a glue extraction mode, and pouring glue or wrapping the mixture for 2-3 times immediately after the sulfur and the accelerant are eaten; wherein the temperature of the mixed rubber material in the mixing roll 1 is controlled between 75 ℃ and 85 ℃, so that the rubber is changed from a tough high-elasticity state to a soft plastic state, the elastoplasticity of the rubber is changed, and the rubber material is conveniently extruded into a rubber sheet; the temperature of the roller group 22 is controlled between 50 ℃ and 60 ℃, the diameter of the film is less than or equal to 150MM, and the length of the film is 700 MM to 900 MM.

S3, cooling: and cooling the rubber sheet discharged from the mixer to ensure that the temperature of the rubber sheet is less than 45 ℃ and prevent the rubber sheet from being vulcanized in advance. The film of the ejection of compact on will following mixing roll 1 lets in the conveying net of basin 2, follows conveying net downstream to the basin 2 in, the water in the basin 2 is to the film cooling of the transmission on the basin 2, and the film passes from the basin 2 to reach the effect to the film cooling. Wherein, a cooling box 31 is arranged at one side of the water tank 2, a cooling pipe 331 filled with cooling liquid and a refrigerating sheet 35 are arranged in the cooling box 31, and water in the water tank 2 flows back to the water tank 2 after being introduced into the cooling box 31 for refrigeration.

S4, air drying: and blowing air to the rubber sheet which penetrates out of the water tank 2 to blow off the moisture on the rubber sheet, so that the rubber material is kept dry, and the moisture on the rubber material is reduced. An air pump 41 is arranged at one side of the water tank 2, the air pump 41 is connected to an exhaust pipe 42, a plurality of air injection pipes 43 extending into the transmission net 21 are fixedly arranged on the exhaust pipe 42, a plurality of spray heads 431 arranged towards the transmission net are uniformly and fixedly arranged on the air injection pipes 43 along the axial direction, and an air injection barrier 44 extending to the upper part of the transmission net is fixedly arranged on the exhaust pipe 42; when the film is conveyed along with the conveying net, the air jet head 431 on the air jet pipe 43 jets air flow generated by the air pump 41 to the bottom of the film, the air jet barrier 44 jets air to the top of the film, and the air flow blows water on the film down to dry the film.

S5, storage: the rubber sheet after cooling and air drying is stored, so that the rubber material is recovered from fatigue, the mechanical stress borne during mixing is relaxed, the shrinkage of the rubber material is reduced, the compounding agent is continuously diffused in the parking process, the uniform dispersion is promoted, the bonding rubber is further generated between the rubber and the carbon black, and the reinforcing effect is improved.

S6, extrusion: and adding the adhesive tape into an extruder, and extruding the adhesive tape into an inner tube by the extruder after the adhesive tape is hot-melted in the extruder. The temperature of the extruder body is 30-45, the temperature of the extruder head is 80-90 ℃, the temperature of the mouth is 90-100 ℃, the rotating speed of a screw rod in the extruder is less than 30 revolutions per minute, the film entering the extruder is gradually heated, the melting and speeding of the film are carried out, the film sliding along with the screw rod to the extruder head is completely melted into liquid, and finally the film is extruded from the mouth to form an inner tube; the extruder is connected with a powder sprayer, the top of the powder sprayer is provided with a hopper, 325-mesh dry talcum powder is added into the hopper, and the powder sprayer sprays the talcum powder into the formed inner tube so as to ensure that the inner tubes are not adhered together.

In the extrusion engineering, the temperature and the vehicle speed are strictly controlled, the inner tube is periodically sampled and detected, 10-20 inner tubes are sampled and detected at intervals, and the inner tube is immediately adjusted when the inner tube does not meet the standard; during detection, the specification of the semi-finished product of the inner tube is measured by a method that a vernier caliper is stretched into 1/2, the thinnest point of the central line is measured at the upper thickness, the thickest point in the central range of 50mm is measured at the lower thickness, the width is measured by a method that a steel tape does not press the bottom, whether all data of the inner tube meet the standard or not is judged, and the data do not meet the standard and are adjusted in time.

S7, coding: and printing the model, specification, serial number and the like of the inner tube on the inner tube. And a marking device is arranged in the conveying direction of the inner tube and prints the model, specification, serial number and the like on the inner tube.

S8, inner tube pressing mouth: cutting a mounting opening on the inner tube, and installing an air nozzle at the mounting opening.

S9, joint: the inner tube, a section of thick bamboo is through extruder suppression back, need dock annular inner tube of a tyre semi-manufactured goods on the inner tube splicer, splicer mainly is provided with fixed dog and activity dog and fixes a position the inner tube of a tyre section of thick bamboo, and the inner tube of a tyre section of thick bamboo is fixed in between fixed dog and the activity dog, and to the inner tube of a tyre specification of difference, the locating position of activity dog is different, extends to between fixed dog and the activity dog welding joint department, and the activity dog slides to the direction of fixed dog, and it is in the same place to glue joint department.

A cooling device for a rubber inner tube is mainly used for cooling a rubber sheet, and comprises a water tank 2 arranged at one end of a mixing mill 1, wherein the water tank 2 is used for bearing water, a transmission net 21 arranged in a V shape is arranged in the water tank 2, the transmission net 21 is downwards inclined into the water tank 2 from two ends to the middle part, so that the rubber sheet transmitted by the transmission net 21 is transmitted from the water tank 2, and the water in the water tank 2 cools the rubber sheet until the temperature of the rubber sheet is lower than 45 ℃; two compression rollers 22 which are arranged at the same height are fixedly arranged in the middle of the water tank 2, the axial direction of each compression roller 22 is perpendicular to the transmission direction of the transmission net 21, and two ends of each compression roller 22 are abutted against the transmission net 21, so that the transmission net 21 is positioned in the middle of the water tank 2 and is horizontally transmitted, the time of transmitting the film in water is prolonged, and the film is cooled more thoroughly.

Referring to fig. 2, a cooling mechanism 3 is arranged on one side of the water tank 2, the cooling mechanism 3 is used for cooling water in the water tank 2, an air drying mechanism 4 is arranged at one end of the water tank 2 far away from the mixing roll 1, and the air drying mechanism 4 is used for drying water on the film to dry the film so as to remove moisture before the film is stored.

Referring to fig. 2 and 4, the cooling mechanism 3 includes a cooling tank 31 fixedly disposed on one side of the water tank 2, two vertically disposed baffles 32 are fixedly disposed at the middle portion inside the cooling tank 31, the tops of the baffles 32 are fixedly connected with the top of the cooling tank 31, a gap is left between the bottom of the baffles 32 and the bottom inside the cooling tank 31, a water inlet passage 33 for water to enter is formed between the two baffles 32, a water outlet passage 34 for water to flow out is formed between the two baffles 32 and the side wall of the cooling tank 31, a water inlet pipe 311 is fixedly disposed at the top of the cooling tank 31, a water pump 312 is fixedly disposed on the water inlet pipe 311, the water inlet pipe 311 is communicated with the water inlet passage 33, a cooling pipe 331 is fixedly disposed at the top of the water inlet passage 33 of the cooling tank 31, cooling liquid is disposed in the cooling pipe 331, two circulation pipes 312 are fixedly disposed at the top of the cooling tank 31, the circulation pipes 312 are communicated with the water outlet passage 34; the water pump 312 pumps the water in the water tank 2 into the water inlet pipe 311, and finally the water enters the water inlet channel 33 through the water inlet pipe 311, the cooling liquid in the water inlet channel 33 cools the water entering the water inlet pipe 311, the cooled water flows out through the water outlet channel 34, the cooling fins 35 in the water outlet channel 34 cool the water again, and the cooled water flows back into the water tank 2 through the circulating pipe 312, so that the water in the water tank 2 is cooled by the cooling liquid in the cooling tank 31 and the cooling fins 35 and then circulates into the water tank 2, and the water in the water tank 2 is prevented from being heated due to the contact with the films.

Referring to fig. 4, the refrigeration piece 35 is obliquely and fixedly arranged between the inner wall of the cooling box 31 and the side wall of the baffle 32, a through hole 351 for water to pass through is formed in each refrigeration piece 35, the refrigeration piece 35 is obliquely arranged to increase the contact area between the water and the refrigeration piece 35, so that the refrigeration piece 35 fully cools the water, and the through hole 351 is convenient for the water to flow from the bottom to the top of the cooling box 31. Through holes 321 are formed in the positions, close to the tops, of the two baffles 32, an electromagnetic valve 322 is fixedly arranged at the through holes 321, a temperature sensor 36 is arranged in the water tank 2, the temperature sensor 36 is used for detecting the temperature of water in the water tank 2 in real time, and when the temperature of the water in the water tank 2 is too high, the electromagnetic valve 322 is controlled to be opened; the temperature sensor 36 detects the temperature of the water in the water tank 2 in real time, compares the detected temperature value with a preset value, if the preset temperature value is set to 5 ℃, when the detected temperature value is greater than 5 ℃, the control electromagnetic valve 322 is opened, so that the water in the water outlet channel 34 flows back to the water inlet channel 33 through the through hole 321, and performs secondary cooling on the water, so that the water contacts the cooling pipe 331 and the cooling sheet 35 again, the temperature of the water is reduced, the water in the water tank 2 is kept at a low temperature all the time, and the water in the water tank 2 is prevented from increasing due to the film.

Referring back to fig. 3, the air drying mechanism 4 includes an air pump 41 fixedly disposed at one side of the water tank 2, the air pump 41 is connected to an exhaust pipe 42, the exhaust pipe 42 is fixedly provided with a plurality of air injection pipes 43 extending into the transmission network 21, the air injection pipes 43 are uniformly and fixedly provided with a plurality of nozzles 431 facing the transmission network along the axial direction, and the exhaust pipe 42 is fixedly provided with an air injection barrier 44 extending above the transmission network; when the film is conveyed along with the conveying net, the air jet head 431 on the air jet pipe 43 jets air flow generated by the air pump 41 to the bottom of the film, the air jet barrier 44 jets air to the top of the film, and the air flow blows water on the film down to dry the film.

Referring to fig. 2 and 5, one end of the water tank 2 away from the mixer 1 is connected to a drying mechanism 5, the drying mechanism 5 includes a support frame 51, a material guiding net 52 is disposed on a top of the support frame 51, the material guiding net 52 conveys the film from the conveying net forward, a detecting assembly 53, a drying assembly 54 and a cooling assembly 55 are sequentially disposed on the support frame 51, the drying assemblies 54 are symmetrically disposed on a top and a bottom of the support frame 51, and only the drying assembly 54 disposed on the top of the support frame 51 is taken as an example.

Referring to fig. 5, the drying assembly 54 includes a protective cover 541 covering the top and bottom of the supporting frame 51, a blower 542 is fixedly disposed on the top of the protective cover 541, a heating wire 543 is fixedly disposed on the top of the supporting frame 51 below the blower 542, and a protective screen 544 horizontally disposed is fixedly disposed between the material guiding net 52 and the heating wire 543 of the supporting frame 51; when the heating wire 543 is operated, the blower 542 blows air downwards, so that the air drives the heat of the heating wire 543 to flow from the meshes of the protection net 544 to the film on the material guiding net 52, and dries the material guiding net 52. The cooling assembly 55 comprises an air cooler 551 fixedly arranged at the top of the protective cover 541, a main pipeline 552 is fixedly arranged on the air cooler 551, the main pipeline 552 extends into the protective cover 541 and is fixedly connected with a plurality of branch pipelines 553 arranged in a C shape, the material guide net 52 penetrates through the formed branch pipelines 553, and a plurality of air nozzles 554 are uniformly arranged on one side of the branch pipelines 553 facing the material guide net 52; after the drying component 54 dries the film, the film is conveyed forward, and the cold air generated by the air cooler 551 blows to the conveyor belt through the air injection pipe 43 to cool the dried film, so that the film is prevented from being vulcanized due to high temperature during drying.

Referring to fig. 5, the detecting assembly 53 includes an infrared moisture detector 531 disposed at one end of the supporting frame 51 close to the water tank 2, the infrared moisture detector 531 is used for detecting moisture on the air-dried film in real time, when the moisture value in the film is detected to be higher than a preset value, the blower 542, the heating wire 543 and the air cooler 551 are controlled to work to dry and cool the film, and when the moisture value on the film is always lower than the preset value, the blower 542, the heating wire 543 and the air cooler 551 do not work, and electric energy is not wasted.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.