CN111169060A - Manufacturing process for pouring polyurethane foaming inflation-free wheel in outer tire - Google Patents
Manufacturing process for pouring polyurethane foaming inflation-free wheel in outer tire Download PDFInfo
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- CN111169060A CN111169060A CN201811340038.8A CN201811340038A CN111169060A CN 111169060 A CN111169060 A CN 111169060A CN 201811340038 A CN201811340038 A CN 201811340038A CN 111169060 A CN111169060 A CN 111169060A
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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
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/04—Resilient fillings for rubber tyres; Filling tyres therewith
Abstract
The invention discloses a manufacturing process of a non-pneumatic tire by pouring polyurethane foam into an outer tire, belonging to the field of tires and comprising the following steps: preparing an outer tire, and cleaning the inner part of the outer tire by using glue and a tackifier; mounting the bottom of the combined die on a centrifuge; opening the upper end of the combined die, clamping and sleeving the outer tire on the outer edge of the combined die, and locking the combined die; starting the centrifugal machine; starting a casting machine, wherein the casting machine casts the liquid polyurethane raw material into the combined die; after demoulding, the outer tire and the inner tire are bonded to form a polyurethane inflation-free wheel; the invention has scientific and reasonable structure, safe and convenient use, strong bearing capacity, enhanced wear resistance of the outer tyre, good elasticity of the polyurethane foaming inner tyre, light and durable polyurethane foaming, heat resistance, cold resistance, corrosion resistance, good safety performance in use, no fear of pinning, explosion resistance, and capability of directly mounting the tyre on a rim, thereby saving the time for a client to mount the tyre.
Description
Technical Field
The invention relates to the technical field of tires, in particular to a manufacturing process for pouring polyurethane foam in an outer tire without using a pneumatic wheel.
Background
The application of the polyurethane non-inflatable tire of the bicycle and the electric vehicle is more and more extensive, in particular to the field of sharing bicycles and sharing electric bicycles; currently, polyurethane tires have the following problems:
firstly, the rim needs to be customized, the cost is increased, and if a normal rim is adopted, the rim and the tire can be separated in the running process in the normal running process, so that accident potential is caused;
secondly, in the production process of the inner and outer integrated tire, the working procedure is complex, the investment of the mold is large, the yield is low, the cost is high, the length of 4 nylon ropes in the inner portion is completely fixed, knotted and positioned manually, the process is quite backward, a large amount of labor is needed to form the capacity, and the production efficiency is limited;
thirdly, the antiskid index of the inner and outer integrated tires made of polyurethane material during driving can not reach the antiskid standard of domestic and international authorities, and unpredictable hidden danger and loss are brought to users and operators;
the polyurethane material is not resistant to hydrolysis, and particularly in a rainy season, a frequently-occurring and humid environment, the service life of the inner and outer integrated tires of the polyurethane material is extremely short, so that the loss brought to investors and consumers is the same and cannot be predicted;
fifthly, because the raw material of the polyurethane integrated foaming tire is a single material, unlike the traditional rubber outer tire which is provided with a cord fabric as a framework support protection, the steel wire ring is fixed as an anti-drop ring, and once the tire body is lacerated by a sharp object, even if only a small hole with a large drawing pin is formed, the decomposition and the breakage of the tire body can be accelerated;
sixth, because the polyurethane foam inner tube of a tyre is processed and made by the mould, because the cover tyre is in the same concave-convex line of the tyre and every is different with the fingerprint, so can not laminate with the cover tyre in the concave-convex surface completely when putting into the cover tyre, cause and travel and roll the phenomenon of skidding in the cover tyre, produce the high temperature and soften the degradation, cause the delaminating of the inner and outer tyre, influence and travel normally and brake, form the accident hidden danger.
Disclosure of Invention
The invention provides a manufacturing process of a non-pneumatic wheel for pouring polyurethane foam into an outer tire, which has the following characteristics:
1. the structure is scientific and reasonable, the use is safe and convenient, the inflation is not needed, and the bearing capacity is strong;
2. the rim does not need to be customized additionally, and the tire can be directly mounted on the rim, so that the time for a customer to mount the tire is saved;
3. the wear resistance is strong, the elasticity of the polyurethane foaming inner tube is good, and the polyurethane foaming inner tube is light, durable, heat-resistant, cold-resistant and corrosion-resistant;
4. the anti-skid tire has the advantages of good safety performance, no fear of pinning, explosion prevention, puncture prevention, long service life, good anti-skid performance, tire drop prevention, environmental protection, energy conservation, safety and recyclability.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing process for pouring polyurethane foam into an outer tire to avoid a pneumatic wheel comprises the following steps:
s1, preparing an outer tire, and cleaning the inner part of the outer tire by using glue and a tackifier;
s2, mounting the bottom of the combined die on a centrifuge;
s3, opening the upper end of the combined die, clamping and sleeving the outer tire on the outer edge of the combined die, and locking the combined die;
s4, starting the centrifuge;
s5, starting a casting machine, wherein the casting machine casts the liquid polyurethane raw material into the combined die;
s6, opening the combined die, taking out the outer tire, and bonding the outer tire and the inner tire after demolding to form the polyurethane inflation-free wheel;
s7, trimming the corners of the polyurethane non-pneumatic wheel by using a tire trimming tool;
s8, drying the trimmed polyurethane inflation-free wheel through a dryer;
s9, visual inspection is carried out firstly, and then uniformity detection is carried out;
s10, mounting the polyurethane inflation-free wheel meeting the requirements on a tire mounting machine;
and S11, starting the tire loader, and mounting the polyurethane non-pneumatic wheel on a rim of the tire.
Preferably, the outer tire in the step S1 is made of rubber or TPU; the TPU is prepared from the following raw materials in parts by weight: 73.7 percent of polyethylene adipate, 18.0 percent of 4,4' -diphenylmethane diisocyanate, 6.5 percent of 1, 6-hexanediol, 0.2 percent of antioxidant, 0.5 percent of yellowing resistant agent and 0.01 percent of stannous octoate.
Preferably, the outer tire in the step S1 is made of rubber or TPU; the glue is prepared from the following raw materials in parts by weight: 40% of ionized water, 10% of acrylic acid, 45% of resin and 5% of an auxiliary agent; the tackifier is prepared by mixing the following components: 20% of acetone, 60% of butanone, 15% of ethyl acetate and 5% of an auxiliary agent.
Preferably, the assembling die in step S2 includes a fixed chassis, an upper ring cover fixedly sleeved on the upper end surface of the fixed chassis, and a clamping core sleeved on the outer edge of the fixed chassis.
Preferably, the rotation speed of the centrifuge in the step S4 is 40 to 50 r/min.
Preferably, the polyurethane raw material in step S5 is made of a polyurethane a component, a polyurethane B component and a polymeric foaming additive.
Preferably, the polyurethane A component is prepared from the following raw materials in parts by weight: 100 parts of polyol A, 0.3-17.0 parts of cross-linking agent, 0.2-1.8 parts of catalyst, 0.8-1.8 parts of foaming agent and 0.2-3.0 parts of foam stabilizer;
the polyurethane B component is prepared from the following raw materials in parts by weight: 100 parts of isocyanate B, 9-55 parts of polyol B and 0.001-0.012 part of side reaction inhibitor.
Preferably, the isocyanate B is one or more of diphenylmethane diisocyanate, carbodiimide-modified diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and dicyclohexylmethane diisocyanate;
the polyol B is composed of one or more of poly adipic acid polyester diol, toluene diisocyanate and naphthalene diisocyanate and polycaprolactone diol.
Preferably, the tire mounting machine in the step S10 includes a tire mounting machine body and a tire mounting structure fixedly mounted on an upper end face of the tire mounting machine body; the tire mounting machine is characterized in that a fixed disc is fixedly mounted on the upper end face of the tire mounting machine body, and a tire mounting head is mounted at the bottom of the tire mounting structure corresponding to the fixed disc.
Compared with the prior art, the invention has the beneficial effects that:
1. by using the method, the combined mould can be manufactured to have scientific and reasonable structure, safe and convenient use, no need of inflation and strong bearing capacity;
2. by using the method, the rim is not required to be customized additionally, and the tire can be directly mounted on the rim through the tire mounting machine, so that the time for a client to mount the tire is saved;
3. the method of the invention has the advantages of strong wear resistance, good elasticity of the polyurethane foaming inner tube, light weight, durability, heat resistance, cold resistance and corrosion resistance;
4. the method of the invention has the advantages of good safety performance, nail-resistant, explosion-proof and puncture-proof performance, long service life, good anti-skid performance, tire-shedding prevention, environmental protection, energy saving, safety and recyclability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic flow chart of the steps of the present invention;
FIG. 2 is a block diagram of a segmented mold of the present invention;
fig. 3 is a structural view of the tire mounting machine of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 2, the combined mold includes a fixed chassis 1, an upper ring cover 2 fixedly secured to the upper end surface of the fixed chassis 1, and a core 3 mounted on the fixed chassis 1 and sleeved to the outer edge of the fixed chassis 1;
the upper end face of the fixed chassis 1 is provided with a plurality of threaded holes, the plurality of threaded holes comprise three central threaded holes arranged at the middle position close to the fixed chassis 1 and four edge threaded holes arranged at the edge of the fixed chassis 1, the fixed chassis 1 is fixed on the centrifuge through bolts by the central threaded holes, and the upper ring sleeve cover 2 is sleeved with the fixed chassis 1 through bolts by the edge threaded holes; a groove is formed in the outer edge of the chassis, and the clamping core 3 is clamped in the groove;
the number of the clamping cores 3 is three, the three clamping cores can form a circular ring through combination of the three clamping cores 3, and the joint of the clamping cores 3 is provided with an inclined opening which can be conveniently detached and installed;
fixed welding in the top of upper ring upper cover 2 has handle 4,4 handles operating personnel of being convenient for dismantle and install assembling die, upper ring upper cover 2.
The specification of the combined die is as follows: 8.5X2.50cm, 10X2.50cm, 24X1.38cm, 24X1.25cm, 24X1.50cm, 26X1.20cm, 26X1.38cm and 28 X1.38cm.
As shown in fig. 3, the tire mounting machine comprises a tire mounting machine body 1 and a tire mounting structure 2 fixedly mounted on the upper end face of the tire mounting machine body 1; the tire mounting machine is characterized in that a fixed disc 3 is fixedly mounted on the upper end face of the tire mounting machine body 1, a tire mounting head 4 is mounted at the bottom of the tire mounting structure 2 corresponding to the fixed disc 3, and the tire mounting machine comprises the following operation steps:
1. starting the tire mounting machine;
2. mounting a rim on the fixed disc 3;
3. manually sleeving a polyurethane inflation-free wheel meeting the requirements on a rim preliminarily;
4. the tire installing head 4 rotates to install the polyurethane inflation-free wheel on the rim.
Example 1: as shown in figure 1, the invention provides a technical scheme that a manufacturing process for pouring polyurethane foaming into an outer tire without using a pneumatic wheel comprises the following steps:
s1, preparing an outer tire, and cleaning the inner part of the outer tire by using glue and a tackifier;
s2, mounting the bottom of the combined die on a centrifuge;
s3, opening the upper end of the combined die, clamping and sleeving the outer tire on the outer edge of the combined die, and locking the combined die;
s4, starting the centrifuge;
s5, starting a casting machine, wherein the casting machine casts the liquid polyurethane raw material into the combined die;
s6, opening the combined die, taking out the outer tire, and bonding the outer tire and the inner tire after demolding to form the polyurethane inflation-free wheel;
s7, trimming the corners of the polyurethane non-pneumatic wheel by using a tire trimming tool;
s8, drying the trimmed polyurethane inflation-free wheel through a dryer;
s9, visual inspection is carried out firstly, and then uniformity detection is carried out;
s10, mounting the polyurethane inflation-free wheel meeting the requirements on a tire mounting machine;
and S11, starting the tire loader, and mounting the polyurethane non-pneumatic wheel on a rim of the tire.
According to the technical scheme, the outer tire in the step S1 is made of rubber or TPU; the TPU is prepared from the following raw materials in parts by weight: 73.7 percent of polyethylene adipate, 18.0 percent of 4,4' -diphenylmethane diisocyanate, 6.5 percent of 1, 6-hexanediol, 0.2 percent of antioxidant, 0.5 percent of yellowing resistant agent and 0.01 percent of stannous octoate.
According to the technical scheme, the outer tire in the step S1 is made of rubber or TPU; the glue is prepared from the following raw materials in parts by weight: 40% of ionized water, 10% of acrylic acid, 45% of resin and 5% of an auxiliary agent; the tackifier is prepared by mixing the following components: 20% of acetone, 60% of butanone, 15% of ethyl acetate and 5% of an auxiliary agent.
According to the above technical solution, the assembling die in step S2 includes a fixed chassis 1, an upper ring cover 2 fixedly sleeved on the upper end surface of the fixed chassis 1, and a clamping core 3 installed on the fixed chassis 1 and sleeved on the outer edge of the fixed chassis 1.
According to the technical scheme, the rotating speed of the centrifuge in the step S4 is 40 r/min.
According to the technical scheme, the polyurethane raw material in the step S5 is prepared from a polyurethane component a, a polyurethane component B and a high-molecular foaming additive.
According to the technical scheme, the polyurethane A component is prepared from the following raw materials in parts by weight: 100 parts of polyol A, 0.3 part of cross-linking agent, 0.2 part of catalyst, 0.8 part of foaming agent and 0.2 part of foam stabilizer;
the polyurethane B component is prepared from the following raw materials in parts by weight: 100 parts of isocyanate B, 9 parts of polyol B and 0.001 part of side reaction inhibitor.
According to the technical scheme, the isocyanate B is one or more of diphenylmethane diisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate and dicyclohexylmethane diisocyanate;
the polyol B is composed of one or more of poly adipic acid polyester diol, toluene diisocyanate and naphthalene diisocyanate and polycaprolactone diol.
According to the technical scheme, the tire mounting machine in the step S10 comprises a tire mounting machine body 1 and a tire mounting structure 2 fixedly mounted on the upper end face of the tire mounting machine body 1; the upper end face of the tire mounting machine body 1 is fixedly provided with a fixed disc 3, and the bottom of the tire mounting structure 2 corresponding to the fixed disc 3 is provided with a tire mounting head 4.
Example 2: as shown in figure 1, the invention provides a technical scheme that a manufacturing process for pouring polyurethane foaming into an outer tire without using a pneumatic wheel comprises the following steps:
s1, preparing an outer tire, and cleaning the inner part of the outer tire by using glue and a tackifier;
s2, mounting the bottom of the combined die on a centrifuge;
s3, opening the upper end of the combined die, clamping and sleeving the outer tire on the outer edge of the combined die, and locking the combined die;
s4, starting the centrifuge;
s5, starting a casting machine, wherein the casting machine casts the liquid polyurethane raw material into the combined die;
s6, opening the combined die, taking out the outer tire, and bonding the outer tire and the inner tire after demolding to form the polyurethane inflation-free wheel;
s7, trimming the corners of the polyurethane non-pneumatic wheel by using a tire trimming tool;
s8, drying the trimmed polyurethane inflation-free wheel through a dryer;
s9, visual inspection is carried out firstly, and then uniformity detection is carried out;
s10, mounting the polyurethane inflation-free wheel meeting the requirements on a tire mounting machine;
and S11, starting the tire loader, and mounting the polyurethane non-pneumatic wheel on a rim of the tire.
According to the technical scheme, the outer tire in the step S1 is made of rubber or TPU; the TPU is prepared from the following raw materials in parts by weight: 73.7 percent of polyethylene adipate, 18.0 percent of 4,4' -diphenylmethane diisocyanate, 6.5 percent of 1, 6-hexanediol, 0.2 percent of antioxidant, 0.5 percent of yellowing resistant agent and 0.01 percent of stannous octoate.
According to the technical scheme, the outer tire in the step S1 is made of rubber or TPU; the glue is prepared from the following raw materials in parts by weight: 40% of ionized water, 10% of acrylic acid, 45% of resin and 5% of an auxiliary agent; the tackifier is prepared by mixing the following components: 20% of acetone, 60% of butanone, 15% of ethyl acetate and 5% of an auxiliary agent.
Preferably, according to the above technical solution, the assembling die in step S2 includes a fixed chassis 1, an upper ring cover 2 fixedly sleeved on the upper end surface of the fixed chassis 1, and a clamping core 3 installed on the fixed chassis 1 and sleeved on the outer edge of the fixed chassis 1.
According to the technical scheme, the rotating speed of the centrifuge in the step S4 is 45 r/min.
According to the technical scheme, the polyurethane raw material in the step S5 is prepared from a polyurethane component a, a polyurethane component B and a high-molecular foaming additive.
Preferably, according to the technical scheme, the polyurethane A component is prepared from the following raw materials in parts by weight: 100 parts of polyol A, 10 parts of cross-linking agent, 1 part of catalyst, 1.3 parts of foaming agent and 1.6 parts of foam stabilizer;
the polyurethane B component is prepared from the following raw materials in parts by weight: 100 parts of isocyanate B, 32 parts of polyol B and 0.006 part of side reaction inhibitor.
According to the technical scheme, the isocyanate B is one or more of diphenylmethane diisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate and dicyclohexylmethane diisocyanate;
the polyol B is composed of one or more of poly adipic acid polyester diol, toluene diisocyanate and naphthalene diisocyanate and polycaprolactone diol.
According to the technical scheme, the tire mounting machine in the step S10 comprises a tire mounting machine body 1 and a tire mounting structure 2 fixedly mounted on the upper end face of the tire mounting machine body 1; the upper end face of the tire mounting machine body 1 is fixedly provided with a fixed disc 3, and the bottom of the tire mounting structure 2 corresponding to the fixed disc 3 is provided with a tire mounting head 4.
Example 3: as shown in figure 1, the invention provides a technical scheme that a manufacturing process for pouring polyurethane foaming into an outer tire without using a pneumatic wheel comprises the following steps:
s1, preparing an outer tire, and cleaning the inner part of the outer tire by using glue and a tackifier;
s2, mounting the bottom of the combined die on a centrifuge;
s3, opening the upper end of the combined die, clamping and sleeving the outer tire on the outer edge of the combined die, and locking the combined die;
s4, starting the centrifuge;
s5, starting a casting machine, wherein the casting machine casts the liquid polyurethane raw material into the combined die;
s6, opening the combined die, taking out the outer tire, and bonding the outer tire and the inner tire after demolding to form the polyurethane inflation-free wheel;
s7, trimming the corners of the polyurethane non-pneumatic wheel by using a tire trimming tool;
s8, drying the trimmed polyurethane inflation-free wheel through a dryer;
s9, visual inspection is carried out firstly, and then uniformity detection is carried out;
s10, mounting the polyurethane inflation-free wheel meeting the requirements on a tire mounting machine;
and S11, starting the tire loader, and mounting the polyurethane non-pneumatic wheel on a rim of the tire.
According to the technical scheme, the outer tire in the step S1 is made of rubber or TPU; the TPU is prepared from the following raw materials in parts by weight: 73.7 percent of polyethylene adipate, 18.0 percent of 4,4' -diphenylmethane diisocyanate, 6.5 percent of 1, 6-hexanediol, 0.2 percent of antioxidant, 0.5 percent of yellowing resistant agent and 0.01 percent of stannous octoate.
According to the technical scheme, the outer tire in the step S1 is made of rubber or TPU; the glue is prepared from the following raw materials in parts by weight: 40% of ionized water, 10% of acrylic acid, 45% of resin and 5% of an auxiliary agent; the tackifier is prepared by mixing the following components: 20% of acetone, 60% of butanone, 15% of ethyl acetate and 5% of an auxiliary agent.
Preferably, according to the above technical solution, the assembling die in step S2 includes a fixed chassis 1, an upper ring cover 2 fixedly sleeved on the upper end surface of the fixed chassis 1, and a clamping core 3 installed on the fixed chassis 1 and sleeved on the outer edge of the fixed chassis 1.
According to the technical scheme, the rotating speed of the centrifuge in the step S4 is 50 r/min.
According to the technical scheme, the polyurethane raw material in the step S5 is prepared from a polyurethane component a, a polyurethane component B and a high-molecular foaming additive.
Preferably, according to the technical scheme, the polyurethane A component is prepared from the following raw materials in parts by weight: 100 parts of polyol A, 17.0 parts of cross-linking agent, 1.8 parts of catalyst, 1.8 parts of foaming agent and 3.0 parts of foam stabilizer;
the polyurethane B component is prepared from the following raw materials in parts by weight: 100 parts of isocyanate B, 55 parts of polyol B and 0.012 part of side reaction inhibitor.
According to the technical scheme, the isocyanate B is one or more of diphenylmethane diisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate and dicyclohexylmethane diisocyanate;
the polyol B is composed of one or more of poly adipic acid polyester diol, toluene diisocyanate and naphthalene diisocyanate and polycaprolactone diol.
According to the technical scheme, the tire mounting machine in the step S10 comprises a tire mounting machine body 1 and a tire mounting structure 2 fixedly mounted on the upper end face of the tire mounting machine body 1; the upper end face of the tire mounting machine body 1 is fixedly provided with a fixed disc 3, and the bottom of the tire mounting structure 2 corresponding to the fixed disc 3 is provided with a tire mounting head 4.
The following are derived by ISO performance testing:
| detecting items | Test method | Test unit | Example 1 | Example 2 | Example 3 |
| Density of | ASTM D792 | g/cm³ | 0.61 | 0.63 | 0.64 |
| Hardness of | ASTM D792 | Shore A | 65 | 66.5 | 67.3 |
| Tensile strength | ASTM D-412 | Kg/cm² | 63 | 65.3 | 68 |
| Elongation percentage | ASTM D-412 | % | 455 | 460 | 469 |
| C type tear Strength | ASTM D-624 | Kg/cm | 35.1 | 38.3 | 40.2 |
| Parallel tear strength | SATRA TM65 | Kg/cm | 6.2 | 8.4 | 9.5 |
| Zigzag | ASTM D-1052 | Next time | 200，035 | 200，124 | 200，551 |
| Compression ratio | ASTM D395-03 | % | 27 | 26.1 | 24.1 |
| DIN abrasion resistance | DIN53516 | Mm³ | 97 | 95 | 88 |
| Wear-resistant brake | DIN53516 | MP³ | 117 | 115 | 112 |
| Slip-proof | ASTM D-412 | Wet type | 0.75 | 0.75 | 0.75 |
| Oil resistance | FIA319：1984 | % | 11 | 10 | 8 |
| Thermal ageing | GB/T3512-2001 | ASTM D3045 | Qualified | Qualified | Qualified |
| Photoaging (ultraviolet light) | GB/T14522-96 | ASTM G154 | Qualified | Qualified | Qualified |
| Cold and hot deformation rate (-10-60 ℃ C.) | ASTM D-412 | % | 0.94 | 0.83 | 0.74 |
| Limiting oxygen index (flame retardant) | GB/T10707 | % | 25 | 23 | 22 |
| Tensile strength after hydrolysis | ASTM D-412 | Kg/cm² | 57 | 53 | 49 |
| Elongation after hydrolysis | ASTM D-412 | % | 430 | 471 | 501 |
| Type C tear Strength after hydrolysis | ASTM D-624 | Kg/cm | 26 | 28 | 30 |
| Fatigue test of riding | ISO4210-7 | 12 hours/75 ten thousand times | Qualified | Qualified | Qualified |
By contrast, the performance of example three is superior compared to examples one and two.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A manufacturing process of a non-pneumatic wheel for casting polyurethane foam in an outer tire is characterized in that: the method comprises the following steps:
s1, preparing an outer tire, and cleaning the inner part of the outer tire by using glue and a tackifier;
s2, mounting the bottom of the combined die on a centrifuge;
s3, opening the upper end of the combined die, clamping and sleeving the outer tire on the outer edge of the combined die, and locking the combined die;
s4, starting the centrifuge;
s5, starting a casting machine, wherein the casting machine casts the liquid polyurethane raw material into the combined die;
s6, opening the combined die, taking out the outer tire, and bonding the outer tire and the inner tire after demolding to form the polyurethane inflation-free wheel;
s7, trimming the corners of the polyurethane non-pneumatic wheel by using a tire trimming tool;
s8, drying the trimmed polyurethane inflation-free wheel through a dryer;
s9, visual inspection is carried out firstly, and then uniformity detection is carried out;
s10, mounting the polyurethane inflation-free wheel meeting the requirements on a tire mounting machine;
and S11, starting the tire loader, and mounting the polyurethane non-pneumatic wheel on a rim of the tire.
2. The process of claim 1, wherein the tire casing of step S1 is made of rubber or TPU; the TPU is prepared from the following raw materials in parts by weight: 73.7 percent of polyethylene adipate, 18.0 percent of 4,4' -diphenylmethane diisocyanate, 6.5 percent of 1, 6-hexanediol, 0.2 percent of antioxidant, 0.5 percent of yellowing resistant agent and 0.01 percent of stannous octoate.
3. The process of claim 1, wherein the tire casing of step S1 is made of rubber or TPU; the glue is prepared from the following raw materials in parts by weight: 40% of ionized water, 10% of acrylic acid, 45% of resin and 5% of an auxiliary agent; the tackifier is prepared by mixing the following components: 20% of acetone, 60% of butanone, 15% of ethyl acetate and 5% of an auxiliary agent.
4. The process of claim 1, wherein the assembling die of step S2 comprises a fixed base plate, an upper cover fixedly fitted on the upper surface of the fixed base plate, and a core fitted on the outer edge of the fixed base plate.
5. The process for manufacturing a non-pneumatic tire with cast-in-tire polyurethane foam as claimed in claim 1, wherein the rotation speed of the centrifuge in step S4 is 40-50 r/min.
6. The process of claim 1, wherein the polyurethane raw material of step S5 is composed of a polyurethane a component, a polyurethane B component and a polymeric foaming additive.
7. The manufacturing process of the inner tire casting polyurethane foaming inflation-free wheel according to claim 6, wherein the polyurethane A component is prepared from the following raw materials in parts by weight: 100 parts of polyol A, 0.3-17.0 parts of cross-linking agent, 0.2-1.8 parts of catalyst, 0.8-1.8 parts of foaming agent and 0.2-3.0 parts of foam stabilizer;
the polyurethane B component is prepared from the following raw materials in parts by weight: 100 parts of isocyanate B, 9-55 parts of polyol B and 0.001-0.012 part of side reaction inhibitor.
8. The process for manufacturing the inner-tire-poured polyurethane foaming inflation-free wheel according to claim 7, wherein the isocyanate B is one or more of diphenylmethane diisocyanate, carbodiimide-modified diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate and dicyclohexylmethane diisocyanate;
the polyol B is composed of one or more of poly adipic acid polyester diol, toluene diisocyanate and naphthalene diisocyanate and polycaprolactone diol.
9. The process of claim 1, wherein the tire mounting machine in step S10 includes a tire mounting machine body and a tire mounting structure fixedly mounted on an upper end surface of the tire mounting machine body; the tire mounting machine is characterized in that a fixed disc is fixedly mounted on the upper end face of the tire mounting machine body, and a tire mounting head is mounted at the bottom of the tire mounting structure corresponding to the fixed disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340038.8A CN111169060A (en) | 2018-11-12 | 2018-11-12 | Manufacturing process for pouring polyurethane foaming inflation-free wheel in outer tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340038.8A CN111169060A (en) | 2018-11-12 | 2018-11-12 | Manufacturing process for pouring polyurethane foaming inflation-free wheel in outer tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111169060A true CN111169060A (en) | 2020-05-19 |
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| CN201811340038.8A Pending CN111169060A (en) | 2018-11-12 | 2018-11-12 | Manufacturing process for pouring polyurethane foaming inflation-free wheel in outer tire |
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| CN112109263A (en) * | 2020-08-27 | 2020-12-22 | 同济大学 | Solid tyre filling device |
| CN113910833A (en) * | 2021-09-22 | 2022-01-11 | 南通顺驰橡胶制品有限公司 | Puncture-proof rubber foaming inner tube and manufacturing method thereof |
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Application publication date: 20200519 |