阅读说明：本技术 一种高铁密封件用高强橡胶复合材料及其制备方法 (High-strength rubber composite material for high-speed rail sealing element and preparation method thereof ) 是由 谢云州 于 2020-12-02 设计创作，主要内容包括：本发明公开了一种高铁密封件用高强橡胶复合材料及其制备方法,包括下列步骤：S1：原料准备；S2：将天然橡胶送入密炼机,在温度为140～150℃的条件下进行素炼10～15min,出料；S3：将丁腈橡胶、经步骤1)素炼后的天然橡胶、苯醚撑硅橡胶、马来酸酐接枝聚乙烯在开炼机进行开炼混合,混炼均匀后,得到混合硅橡胶；S4：将混合硅橡胶送入密炼机中,加入白炭黑、三氧化二铝、氧化锌、抗老化剂、热稳定剂,混炼；继续混炼；然后降温加入二异氰酸甲苯酯、交联剂,继续混炼；然后排胶,经开炼机翻炼后下片、冷却；S5：压延成型；S6：将压延成型后的半成品裁切加工形成规则形状的橡胶颗粒；S7：将橡胶颗粒送入到模具的模腔内,然后经由硫化机硫化后获得密封圈成品。(The invention discloses a high-strength rubber composite material for a high-speed rail sealing element and a preparation method thereof, wherein the preparation method comprises the following steps: s1: preparing raw materials; s2: feeding natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 140-150 ℃, and discharging; s3: mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber; s4: feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing; continuously mixing; then cooling, adding toluene diisocyanate and a cross-linking agent, and continuing mixing; then discharging rubber, turning over by an open mill, then discharging and cooling; s5: rolling and forming; s6: cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes; s7: and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.)

1. The preparation method of the high-speed rail sealing element is characterized by comprising the following steps of:

s1: preparing raw materials: 55-68 parts of nitrile rubber, 20-26 parts of natural rubber, 9-12 parts of phenylene ether silicon rubber, 5-7 parts of maleic anhydride grafted polyethylene, 4-7 parts of white carbon black, 0.5-0.8 part of aluminum oxide, 1-1.4 parts of zinc oxide, 0.07-0.09 part of toluene diisocyanate, 2.5-4.5 parts of an anti-aging agent, 2-4 parts of a heat stabilizer and 2-4 parts of a cross-linking agent;

s2: feeding natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 140-150 ℃, and discharging; storing the masticated natural rubber at room temperature for more than 48h for later use;

s3: mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber;

s4: feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing for 10-15 min at the temperature of 103-108 ℃; then continuously mixing for 8-12 min at the temperature of 113-118 ℃; then, cooling to 108-110 ℃, adding toluene diisocyanate and a cross-linking agent, and continuously mixing for 8-10 min; then discharging rubber, turning over by an open mill, then discharging and cooling;

s5: the rubber material cooled in the step S4 is subjected to calendering molding through a calender;

s6: cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes;

s7: and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.

2. The high-strength rubber composite material for the high-speed rail sealing element according to claim 1, wherein the steps comprise the following raw materials in parts by weight: 61 parts of nitrile rubber, 23 parts of natural rubber, 11 parts of phenylene ether silicone rubber, 6 parts of maleic anhydride grafted polyethylene, 5.5 parts of white carbon black, 0.65 part of aluminum oxide, 1.2 parts of zinc oxide, 0.08 part of toluene diisocyanate, 3 parts of anti-aging agent, 3 parts of heat stabilizer and 3 parts of crosslinking agent.

3. The high strength rubber composite material for the high iron seal according to claim 1, wherein the crosslinking agent is a mixture of zinc peroxide and a rubber crosslinking agent VP-4L.

4. The high-strength rubber composite material for the high-speed rail seal as claimed in claim 3, wherein the mass ratio of the crosslinking agent of the mixture of zinc peroxide and the rubber crosslinking agent VP-4L is 1: 2.5 to 3.2.

5. The high-strength rubber composite material for a high-speed rail seal according to claim 1, wherein the age resistor is an age resistor 4010.

6. The high strength rubber composite material for a high speed rail seal according to claim 1, wherein the heat stabilizer is stearic acid.

7. The high strength rubber composite material for a high iron seal according to claim 1, wherein the alumina is nano alumina.

8. The high strength rubber composite material for a high iron seal according to claim 1, wherein the zinc oxide is nano zinc oxide.

9. A seal ring vulcanizing device for a high-speed rail, which is used for producing the high-speed rail seal member according to any one of claims 1 to 8, and is characterized in that: comprises that

A vulcanizer;

the feeding mechanism comprises a horizontal reciprocating mechanism, a vertical reciprocating mechanism, a gripping component, a material frame and a material frame jacking mechanism, the vertical reciprocating mechanism is fixedly arranged at the output end of the horizontal reciprocating mechanism, the vertical reciprocating mechanism is driven to switch between the position above the material frame and the position above the vulcanizing machine by means of the motion of the output end of the horizontal reciprocating mechanism, the gripping component is fixedly arranged at the output end of the vertical reciprocating mechanism, and the gripping component is driven by means of the motion of the output end of the vertical reciprocating mechanism to move downwards from the position above the material frame to grip a metal framework or place the metal framework into a mold cavity of the vulcanizing machine from the position above the vulcanizing machine; the material rack is fixedly arranged at the output end of the material rack jacking mechanism, and the material rack and the grasping component are driven to perform coordinated action by virtue of the motion of the output end of the material rack jacking mechanism;

the feeding tool can put rubber materials into a die cavity of the vulcanizing machine at one time.

10. The seal ring vulcanizing equipment for the high-speed rail according to claim 9, wherein: the feeding tool comprises a first movable plate and a second movable plate, wherein a first channel is formed in the first movable plate, a second channel is formed in the second movable plate, and the first channel corresponds to the second channel in a one-to-one correspondence manner; the first movable plate and the second movable plate can slide in parallel relatively, and in the sliding process of the first movable plate and the second movable plate, the first channel is communicated with the second channel or the first channel and the second channel are shielded by the second movable plate or the first movable plate.

Technical Field

The invention relates to the technical field of high-speed rail sealing element materials, in particular to a high-strength rubber composite material for a high-speed rail sealing element and a preparation method thereof.

Background

The rubber is elastic, insulating, waterproof and air-proof material prepared from latex of plants such as rubber tree and rubber grass. A high-elasticity polymer compound. It is divided into two types of natural rubber and synthetic rubber. The natural rubber is prepared by extracting colloid from plants such as rubber tree and rubber grass and processing; synthetic rubbers are obtained by polymerization of various monomers. The rubber product has unique performance, so that the rubber is a better raw material for manufacturing the sealing ring.

The rubber sealing element is a general basic element in a sealing device, is a rubber product widely applied in the sealing technology, and is widely suitable for being installed on various mechanical equipment due to the advantages of small elastic modulus, high elongation, air permeability resistance and the like. In the working environment, the lubricating system of mechanical equipment contains acid and alkali components, which easily permeate into the sealing element to cause the expansion of the sealing element, thus affecting the service life of the sealing element, moreover, the long-term severe working environment, such as high temperature and high pressure, accelerates the damage rate of the sealing element, the replacement cycle of the sealing element is short, and troubles are brought to the continuous production of enterprises.

However, the rubber sealing materials used at present have the following problems:

1. the tensile strength is low, the mechanical property is not good, and the mechanical property requirements in the fields of high-speed rail sealing elements and the like cannot be met;

2. poor aging resistance, poor elasticity, high compression set, poor high temperature resistance and the like, and poor comprehensive performance.

Based on the situation, the invention provides a high-strength rubber composite material for a high-speed rail sealing element and a preparation method thereof, and the problems can be effectively solved.

Disclosure of Invention

The invention aims to provide a high-strength rubber composite material for a high-speed rail sealing element and a preparation method thereof. The high-strength rubber composite material for the high-speed rail sealing element is prepared by selecting raw materials, optimizing the content of each raw material and selecting nitrile rubber, natural rubber, phenylene ether silicon rubber, maleic anhydride grafted polyethylene, white carbon black, aluminum oxide, zinc oxide, toluene diisocyanate, an anti-aging agent, a heat stabilizer and a crosslinking agent in a proper ratio, so that the high-strength rubber composite material for the high-speed rail sealing element has good sealing performance, high tensile strength and excellent mechanical property; in addition, the anti-aging performance is good, and the service life is long.

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

a preparation method of a high-speed rail sealing element comprises the following steps:

s1: preparing raw materials: 55-68 parts of nitrile rubber, 20-26 parts of natural rubber, 9-12 parts of phenylene ether silicon rubber, 5-7 parts of maleic anhydride grafted polyethylene, 4-7 parts of white carbon black, 0.5-0.8 part of aluminum oxide, 1-1.4 parts of zinc oxide, 0.07-0.09 part of toluene diisocyanate, 2.5-4.5 parts of an anti-aging agent, 2-4 parts of a heat stabilizer and 2-4 parts of a cross-linking agent;

s2: feeding natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 140-150 ℃, and discharging; storing the masticated natural rubber at room temperature for more than 48h for later use;

s3: mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber;

s4: feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing for 10-15 min at the temperature of 103-108 ℃; then continuously mixing for 8-12 min at the temperature of 113-118 ℃; then, cooling to 108-110 ℃, adding toluene diisocyanate and a cross-linking agent, and continuously mixing for 8-10 min; then discharging rubber, turning over by an open mill, then discharging and cooling;

s5: the rubber material cooled in the step S4 is subjected to calendering molding through a calender;

s6: cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes;

s7: and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.

On the basis of the above scheme and as a preferable scheme of the scheme: the method comprises the following steps of preparing the following raw materials in parts by weight: 61 parts of nitrile rubber, 23 parts of natural rubber, 11 parts of phenylene ether silicone rubber, 6 parts of maleic anhydride grafted polyethylene, 5.5 parts of white carbon black, 0.65 part of aluminum oxide, 1.2 parts of zinc oxide, 0.08 part of toluene diisocyanate, 3 parts of anti-aging agent, 3 parts of heat stabilizer and 3 parts of crosslinking agent.

On the basis of the above scheme and as a preferable scheme of the scheme: the crosslinking agent is a mixture of zinc peroxide and a rubber crosslinking agent VP-4L.

On the basis of the above scheme and as a preferable scheme of the scheme: the cross-linking agent is a mixture of zinc peroxide and a rubber cross-linking agent VP-4L, and the mass ratio of the zinc peroxide to the rubber cross-linking agent VP-4L is 1: 2.5 to 3.2.

On the basis of the above scheme and as a preferable scheme of the scheme: the anti-aging agent is an anti-aging agent 4010.

On the basis of the above scheme and as a preferable scheme of the scheme: the heat stabilizer is stearic acid.

On the basis of the above scheme and as a preferable scheme of the scheme: the aluminum oxide is nano aluminum oxide.

On the basis of the above scheme and as a preferable scheme of the scheme: the zinc oxide is nano zinc oxide.

Also discloses a sealing ring vulcanizing device for the high-speed rail, which is used for producing a sealing piece of the high-speed rail and comprises

A vulcanizer;

the feeding mechanism comprises a horizontal reciprocating mechanism, a vertical reciprocating mechanism, a gripping component, a material frame and a material frame jacking mechanism, the vertical reciprocating mechanism is fixedly arranged at the output end of the horizontal reciprocating mechanism, the vertical reciprocating mechanism is driven to switch between the position above the material frame and the position above the vulcanizing machine by means of the motion of the output end of the horizontal reciprocating mechanism, the gripping component is fixedly arranged at the output end of the vertical reciprocating mechanism, and the gripping component is driven by means of the motion of the output end of the vertical reciprocating mechanism to move downwards from the position above the material frame to grip a metal framework or place the metal framework into a mold cavity of the vulcanizing machine from the position above the vulcanizing machine; the material rack is fixedly arranged at the output end of the material rack jacking mechanism, and the material rack and the grasping component are driven to perform coordinated action by virtue of the motion of the output end of the material rack jacking mechanism;

the feeding tool can put rubber materials into a die cavity of the vulcanizing machine at one time.

On the basis of the above scheme and as a preferable scheme of the scheme: the feeding tool comprises a first movable plate and a second movable plate, wherein a first channel is formed in the first movable plate, a second channel is formed in the second movable plate, and the first channel corresponds to the second channel in a one-to-one correspondence manner; the first movable plate and the second movable plate can slide in parallel relatively, and in the sliding process of the first movable plate and the second movable plate, the first channel is communicated with the second channel or the first channel and the second channel are shielded by the second movable plate or the first movable plate.

The high-strength rubber composite material for the high-speed rail sealing element is mainly used as a sealing material, such as a sealing ring and the like, and the application field of the high-strength rubber composite material is not limited to the field of sealing materials, and can also be used in other fields.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the high-strength rubber composite material for the high-speed rail sealing element is prepared by selecting raw materials, optimizing the content of each raw material and selecting nitrile rubber, natural rubber, phenylene ether silicon rubber, maleic anhydride grafted polyethylene, white carbon black, aluminum oxide, zinc oxide, toluene diisocyanate, an anti-aging agent, a heat stabilizer and a crosslinking agent in a proper ratio, so that the high-strength rubber composite material for the high-speed rail sealing element has good sealing performance, high tensile strength and excellent mechanical property; in addition, the anti-aging performance is good, and the service life is long.

The high-strength rubber composite material for the high-speed rail sealing element is prepared by adding the phenylate phenylene rubber in a proper proportion into raw materials, and the raw materials are matched with the nitrile rubber and the natural rubber to serve as a composite base material, so that good mechanical properties such as high tensile strength are guaranteed;

the white carbon black and the aluminum oxide in proper proportion are added into the raw materials of the high-strength rubber composite material for the high-speed rail sealing element, so that the strength of the high-strength rubber composite material for the high-speed rail sealing element is further improved;

in the raw material system of the high-strength rubber composite material for the high-speed rail sealing element, the isocyanate group in the toluene diisocyanate can react with active groups such as hydroxyl, carboxyl and the like in other components to generate crosslinking, so that the small molecule residue in the product is reduced, the resilience of the product can be improved, the compression permanent deformation rate is reduced, and the aging resistance (mainly oil resistance and high temperature precipitation resistance) of the product is improved.

The raw materials of the high-strength rubber composite material for the high-speed rail sealing element are added with a proper proportion of a cross-linking agent, and preferably, the cross-linking agent is a mixture of zinc peroxide and a rubber cross-linking agent VP-4L. Preferably, the cross-linking agent is a mixture of zinc peroxide and a rubber cross-linking agent VP-4L, and the mass ratio of the cross-linking agent of zinc peroxide to the rubber cross-linking agent VP-4L is 1: 2.5 to 3.2. The product of the invention can generate crosslinking better, obtain good network crosslinking body, improve the resilience of the product and reduce the compression set rate.

The sealing ring produced by the production process can completely meet the actual use requirements, and the vulcanizing equipment can realize the one-time addition of the metal framework and the one-time addition of the rubber material in the vulcanizing mould, so that compared with the traditional manual operation, the forming quantity of the one-time sealing ring of the vulcanizing mould can be obviously increased, and the feeding efficiency is improved; and carry out accurate location, for traditional manual operation, the precision of fine assurance material loading has solved traditional artifical material loading and has appeared the unsafe problem of counterpointing easily, when improving production efficiency, has reduced the defective product rate of product by a wide margin.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a feed mechanism;

FIG. 3 is a schematic view showing the structure of the vulcanizer in an open state of the molds (upper and lower molds);

FIG. 4 is a schematic view of the grip assembly;

FIG. 5 is a schematic view of an upper mold opening assembly;

FIG. 6 is a schematic view of an open state of the upper mold;

FIG. 7 is a schematic overall structure diagram of the feeding tool;

FIG. 8 is a schematic view of the first movable plate and the second movable plate of the feeding tool in a sliding and dislocated state;

FIG. 9 is a schematic diagram of a first movable plate structure;

FIG. 10 is a schematic diagram of a second movable plate structure;

FIG. 11 is a sectional view A-A;

FIG. 12 is a sectional view B-B;

FIG. 13 is a cross-sectional view of the first plate and the second plate in sliding misalignment;

FIG. 14 is a schematic view of a granulating apparatus;

fig. 15 is an enlarged a view.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.

The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.

Example 1:

a high-strength rubber composite material for a high-speed rail sealing element comprises the following raw materials in parts by weight:

55-68 parts of nitrile rubber,

20-26 parts of natural rubber,

9-12 parts of phenylate phenylene silicone rubber,

5-7 parts of maleic anhydride grafted polyethylene,

4-7 parts of white carbon black,

0.5-0.8 part of aluminum oxide,

1-1.4 parts of zinc oxide,

0.07 to 0.09 part of toluene diisocyanate,

2.5 to 4.5 parts of anti-aging agent,

2-4 parts of heat stabilizer,

2-4 parts of a cross-linking agent.

Preferably, the high-strength rubber composite material for the high-speed rail sealing element comprises the following raw materials in parts by weight:

61 parts of nitrile rubber,

23 parts of natural rubber,

11 parts of phenylate phenylene silicone rubber,

6 parts of maleic anhydride grafted polyethylene,

5.5 parts of white carbon black,

0.65 part of aluminum oxide,

1.2 parts of zinc oxide,

0.08 portion of toluene diisocyanate,

3 portions of anti-aging agent,

3 parts of heat stabilizer,

3 parts of a crosslinking agent.

Preferably, the crosslinking agent is a mixture of zinc peroxide and a rubber crosslinking agent VP-4L.

Preferably, the cross-linking agent is a mixture of zinc peroxide and a rubber cross-linking agent VP-4L, and the mass ratio of the cross-linking agent of zinc peroxide to the rubber cross-linking agent VP-4L is 1: 2.5 to 3.2.

Preferably, the anti-aging agent is an anti-aging agent 4010.

Preferably, the heat stabilizer is stearic acid.

Preferably, the alumina is nano alumina.

Preferably, the zinc oxide is nano zinc oxide.

The invention also provides a preparation method of the high-strength rubber composite material for the high-speed rail sealing element, which comprises the following steps:

1) feeding natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 140-150 ℃, and discharging; storing the masticated natural rubber at room temperature for more than 48h for later use;

2) mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber;

3) feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing for 10-15 min at the temperature of 103-108 ℃; then continuously mixing for 8-12 min at the temperature of 113-118 ℃; then, cooling to 108-110 ℃, adding toluene diisocyanate and a cross-linking agent, and continuously mixing for 8-10 min; then discharging rubber, turning over by an open mill, then discharging and cooling;

4) carrying out calendering molding on the cooled rubber material in the step 3) by a calender;

5) cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes;

6) and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.

Preferably, the rubber particles in this embodiment have a set thickness and are circular in cross-section.

Further, the production of the sealing ring is realized by the following devices: a sealing ring vulcanizing device for a high-speed rail,

Included

the vulcanizing machine 200 comprises a mold 210, a horizontal reciprocating displacement mechanism 220, a pressing mechanism 230 and an upper mold opening mechanism 240, wherein the mold 210 comprises a lower mold 211 and an upper mold 212, the upper mold 212 is buckled with the lower mold 211, the horizontal reciprocating displacement mechanism 220 drives the mold 210 to be switched between a feeding station and a molding station, the pressing mechanism 230 is positioned above the molding station, and after the horizontal reciprocating displacement mechanism 220 drives the mold 210 to enter the molding station, the pressing mechanism 230 applies set pressure to the mold 210; the upper die opening mechanism 240 comprises a turnover cylinder 241, a die frame 242, a rotating shaft 243, a fixed seat 244, a lifting cylinder 245 and a turnover swing arm 246, the upper die 212 is fixedly arranged on the die frame 242, the rotating shaft 243 is fixedly arranged on two sides of the die frame 242, the rotating shaft 243 is fixedly connected with the turnover swing arm 246, a shell of the turnover cylinder 241 is hinged to the fixed seat 244, an output end of the turnover cylinder 241 is hinged to the turnover swing arm 246, a shell of the lifting cylinder 245 is fixedly arranged on the die frame 242, and an output end of the lifting cylinder 245 is in contact with a supporting plate 2441 fixedly arranged on the fixed seat; when the upper mold 212 needs to be turned over, the output end of the lifting cylinder 245 extends outwards to press the supporting plate 2441, so that the mold frame 242 is lifted upwards, the upper mold 212 is far away from the lower mold 211, then the output end of the turning cylinder 241 retracts to pull the turning swing arm 246 to rotate, and as the rotating shaft 243 and the turning swing arm 246 are fixedly connected, the rotating shaft 243 and the mold frame 242 are driven to swing together, and meanwhile, the upper mold 212 is driven to turn over, so that the mold 210 is opened.

The feeding mechanism 300, the feeding mechanism 300 includes a horizontal reciprocating mechanism 310, a vertical reciprocating mechanism 320, a gripping component 330, a rack 340 and a rack jacking mechanism 350, the vertical reciprocating mechanism 320 is fixedly arranged at the output end of the horizontal reciprocating mechanism 310, the vertical reciprocating mechanism 320 is driven by the motion of the output end of the horizontal reciprocating mechanism to switch between the position above the rack 340 and the position above the vulcanizing machine 200, the gripping component 330 is fixedly arranged at the output end of the vertical reciprocating mechanism 320, the gripping component 330 is driven by the motion of the output end of the vertical reciprocating mechanism to move downwards from the position above the rack 340 to grip the metal framework 360 or place the metal framework 360 into a mold cavity (between the upper mold 212 and the lower mold 211) of the vulcanizing machine from the position above the vulcanizing machine; the material rack 340 is fixed at the output end of the material rack jacking mechanism 350, and the material rack 340 and the gripping assembly 330 are driven to perform coordinated actions by the movement of the output end of the material rack jacking mechanism. Specifically, the rack jacking mechanism 350 drives the rack 340 to jack up by a set height in the interval period after the grabbing component grabs the metal framework 360 once, the set height is greater than or equal to the thickness of the metal framework 360, and the purpose of the rack jacking mechanism is to compensate the height difference between the grabbing component and the metal framework grabbed next time, which is caused after the uppermost metal framework is taken away, so that the metal framework can still be grabbed smoothly by the grabbing component next time. It is further preferred that the gripping member 330 comprises a plurality of suction cup members 331, and the suction cup members 331 include a plurality of suction cups 3311 arranged in a manner adapted to the shape of the metal frame, so that each of the suction cups 3311 can contact with the flat surface of the metal frame 360, thereby stably and reliably gripping the metal frame. Further preferred work or material rest 340 includes first tray 341, second tray 342 and material loading post 343, first tray 341 sets firmly in the output of work or material rest climbing mechanism 350, second tray 342 is located first tray 341 top, the post passageway of feeding has been seted up on the second tray 342, material loading post 343 one end sets firmly in first tray 341, the post passageway of feeding is exposed after vertical the passing of the post passageway of feeding of the post other end and sets for length, second tray 342 floats relative first tray 341 and sets up, the part that material loading post 343 exposes in second tray 342 outside is located to the cover of metal framework 360. The elastic component 344 is further included, the elastic component 344 is located between the first tray 341 and the second tray 342, and the elastic component 344 is in contact with both the upper end surface of the first tray 341 and the lower end surface of the second tray 342. Preferably, the elastic component 344 is a plurality of springs, the springs are arranged in a central symmetry manner, and the center of symmetry is the axis of the material loading column 343. Through the mode that sets up the second tray relative first tray is floated to the mode that sets up elastic component 344 between second tray and first tray makes sucking disc 3311 move down with the surperficial in-process of the metal skeleton surface contact of the superiors, can absorb because and the impact that produces through elastic component 344, can also guarantee simultaneously that sucking disc 3311 has the most suitable packing force thereby guarantee the best actuation state, avoid assaulting too big and cause metal skeleton damage or sucking disc 3311 to damage.

Further, still include material loading frock 100, material loading work 100 can once only put into the die cavity of vulcanizer with the rubber material. The feeding tool 100 comprises a first movable plate 110 and a second movable plate 120, wherein a first channel 111 is formed in the first movable plate 110, a second channel 121 is formed in the second movable plate 120, and the first channel 111 corresponds to the second channel 121 one by one; the first movable plate 110 and the second movable plate 120 are slidable in parallel, and during the sliding process, the first channel 111 is communicated with the second channel 121 or either the first channel 111 or the second channel 121 is shielded by the second movable plate 120 or the first movable plate 110.

The first channel 111 includes a plurality of first through holes 1111 formed on the first movable plate 110 according to a predetermined arrangement rule, and the second channel 121 includes a plurality of second through holes 1211 formed on the second movable plate 120 according to a predetermined arrangement rule.

It should be noted that, the feeding tool 100 of the sealing ring vulcanizing device of the present application is used for feeding granular rubber into a vulcanizing mold, and in the use process, the feeding tool 100 is placed into a container filled with rubber particles, so that the first movable plate 110 and the second movable plate 120 are dislocated, that is, the first channel and the second channel are not completely communicated or completely not communicated, the first channel includes a plurality of first through holes, at this time, the first through holes serve as a rubber particle accommodating cavity, an operator faces the first movable plate 110 upward, then pours or sprinkles rubber particles onto the first movable plate 110, and then horizontally shakes the feeding tool 100 several times, so that the rubber particles roll into the first through holes 1111 and are retained in the first through holes 1111; after the feeding tool 100 is placed above the vulcanizing mold, the second movable plate 120 is located below, only the first movable plate 110 and the second movable plate 120 are moved again, so that after the first channel and the second channel are completely communicated, the rubber particles can fall accurately and sufficiently through the second through hole 1121 to enter the set position, if the first through hole 1111 and the second through hole 1121 are dislocated, the rubber particles in the first through hole 1111 are difficult to fall through the second through hole 1121 to enter the set position, and therefore the problem that the first movable plate and the second movable plate can be accurately aligned needs to be solved, for this reason, the present embodiment further includes a positioning assembly 140, and the positioning assembly 140 enables the feeding tool 100 to be quickly positioned with the feeding station after being placed in the feeding station. The positioning assembly of the present embodiment preferably includes a first positioning slot 113 formed on the first plate 110 and a second positioning slot 123 formed on the second plate 120, wherein the first positioning slot 113 and the second positioning slot 123 correspond to each other. Specifically, a positioning block 214 is arranged at a feeding station of the vulcanizing machine, and the positioning assembly 140 is matched with the positioning block 214, so that the feeding tool 100 can be quickly positioned after being loaded into the feeding station of the vulcanizing machine.

Further, an auxiliary positioning assembly 130 is further included, wherein the auxiliary positioning assembly 130 includes a first positioning space 112 opened on the first movable plate 110 and a second positioning space 122 opened on the second movable plate 120; only when the first passage 111 and the second passage 121 are completely communicated, the second positioning space 122 is exposed to the outside sufficiently by the first positioning space 112, and a positioning post (not shown) is disposed thereon, the second positioning space 122 corresponds to the positioning post, and only after the second positioning space 122 is exposed to the outside sufficiently by the first positioning space 112, the positioning post can be inserted into the first positioning space 112 and the second positioning space 122 completely. When the first movable plate 110 and the second movable plate 120 are relatively moved to make the first channel 111 and the second channel 121 dislocate (i.e. not completely communicate), the first movable plate 110 will shield at least one second positioning space 122 partially or completely, and at the same time, the first positioning groove 113 and the second positioning groove 123 will also dislocate, so that when the feeding tool 100 of the present application is installed on a vulcanizing machine, if the first through hole 1111 and the second through hole 1121 do not completely align with each other, on one hand, the first positioning groove 113 and the second positioning groove 123 will interfere with the vulcanizing mold and thus are difficult to be placed in the vulcanizing mold, on the other hand, even if the first positioning groove 113 and the second positioning groove 123 are slightly dislocated, the first through hole 1111 and the second through hole 1121 are not completely communicated, at this time, the positioning post on the vulcanizing machine cannot be inserted into the first positioning channel 112 through the second positioning channel 122, thereby the vulcanizer material loading frock 100 of this application can not be complete put into the vulcanization mould utensil in, the operation workman turns back this problem of discovery this moment to adjust first fly leaf and second fly leaf slightly, thereby make the reference column insert completely in first locating channel 112, later rock or vibrate material loading frock 100, make rubber granule all fall into the settlement position in the vulcanization mould utensil as far as, thereby guarantee sufficient rubber volume.

Further, the present embodiment further includes a guide assembly 160, and the guide assembly 160 guides and positions the relative movement of the first movable plate 110 and the second movable plate 120. The guide assembly 160 includes at least one first guide slot 114 opened on the first movable plate 110, at least one second guide slot 124 opened on the second movable plate 120, and a guide pin 161; the first guide groove 114 and the second guide groove 124 correspond and the guide pin 161 is inserted into the first guide groove 114 and the second guide groove 124 in sequence. Specifically, in the present embodiment, two opposite surfaces of the first movable plate 110 and the second movable plate 120 contact each other, and the guide pin 161 has two ends provided with a stopper portion for keeping the two opposite surfaces of the first movable plate 110 and the second movable plate 120 in a contact state. In addition, the guide assembly 160 limits the maximum movable displacement distance of the first movable plate 110 and the second movable plate 120 to move within a reasonable movable range.

Further, in order to facilitate moving and operating the loading tool 100, the present embodiment preferably further includes a handle 115, and the handle 115 is fixedly disposed on the first movable plate 110; it is preferable that the handle 115 is symmetrically disposed at a position adjacent to the edge of the first flap 110, thereby facilitating the operation while increasing the effective area of the first flap and the second flap as much as possible.

Preferably, the first movable plate 110 and the second movable plate 120 are made of metal, plastic, resin or resin fiber composite; in addition, the second movable plate 120 is provided with a avoiding hole 1212 deviating from the first movable plate 110, the avoiding hole 1212 is used for matching with the central positioning boss of each sealing ring of the vulcanizing mold, and the avoiding hole 1212 and the central positioning boss can perform a positioning and righting action in the process of placing the feeding tool 100 into the vulcanizing mold, so that the accuracy of placing the rubber particles is further improved.

In this embodiment, the gripping assembly 330 of the feeding mechanism grips a group of metal frameworks, at this time, the upper mold opening mechanism 240 completely turns and opens the upper mold to the state shown in fig. 6, then the horizontal reciprocating assembly 310 drives the vertical reciprocating assembly 320 to the position above the feeding station, the vertical reciprocating assembly 320 drives the gripping assembly 330 to move downwards to place the metal frameworks into the mold cavity 2111, and then the gripping assembly returns to the position above the material rest to grip the metal frameworks again; go up mould opening mechanism 240 with last mould lock on the bed die, horizontal reciprocating motion mechanism 220 drives mould 210 and starts to the shaping station, pushing down mechanism 230 pushes down, (it needs to explain, the mould embeds there is heating element, heating element realizes heat preservation and heating to the mould), thereby realize the pressurization heating vulcanization, horizontal reciprocating motion mechanism 220 drives the mould and gets back to the material loading station after the vulcanization shaping, go up mould opening mechanism 240 afterwards and open last mould, the workman takes off the fashioned sealing washer, then continue the material loading through material loading mechanism, so circulate and can realize continuous production.

Further, the rubber particles are processed and produced by the following equipment; granulation device for producing sealing ring for high-speed rail comprises

A frame 470, a rubber delivery assembly 460, and a stamping platform 480.

The assembly 410 is linearly reciprocated.

The forming assembly comprises a movable forming assembly 420 and a fixed forming assembly 430, the movable forming assembly 420 is fixedly arranged at the output end of the linear reciprocating assembly 410, and the fixed forming assembly 430 is positioned above the movable forming assembly 420 and is fixedly arranged on the rack 470; the dynamic forming assembly 420 comprises a plurality of punches 440, wherein the punches 440 are hollow; the fixed forming assembly 430 comprises a plurality of ejector rods 450, the ejector rods 450 correspond to the punches 440 one by one, and the ejector rods 450 penetrate into the punches 440; it is further preferable that the linear reciprocating component 410 drives the dynamic forming component 420 to switch between an initial station and a punching station, when the dynamic forming component 420 is located at the initial station, one end of the push rod 450 facing the punching platform 480 is higher than the end of the punch 440, and when the dynamic forming component 420 is located at the punching station, one end of the push rod 450 facing the punching platform is lower than the end of the punch 440. And further preferably, the end of the punch 440 facing the stamping platform 480 is open in a wide mouth shape, so that the punch 440 forms a cutting edge for cutting the rubber raw material. The stamping platform 480 is positioned below the dynamic forming assembly 420, and the rubber conveying assembly realizes continuous supply of rubber raw materials; the rubber conveying component can adopt conveying equipment in the prior art to realize continuous or intermittent conveying.

A blanking assembly 490 is also included, wherein the blanking assembly 490 removes the rubber particles formed on the stamping platform 480. Particularly preferably, the blanking assembly 490 includes a blowing nozzle, the blowing nozzle is selectively connected with compressed air, and an air outlet end of the blowing nozzle faces towards the blanking direction.

It is further preferred that the movable forming assembly 420 comprises two symmetrically arranged sub movable forming assemblies, and the fixed forming assembly 430 comprises two symmetrically arranged sub fixed forming assemblies. And it is further preferable that the blanking assembly 490 includes two blowing nozzles symmetrically disposed, the blowing nozzles are located between the two sub dynamic forming assemblies, and each blowing nozzle corresponds to the sub dynamic forming assembly. Preferably, the outlet of the mouthpiece is slightly above the upper plane of the raw rubber material 460 placed on the stamping platform 480.

In this embodiment, the straight reciprocating assembly 410 drives the punch 440 of the forming assembly 420 to press downward to realize punching and cutting, and when the straight reciprocating assembly 410 drives the forming assembly 420 to move upward, the push rod 450 of the forming assembly 430 pushes out the rubber raw material embedded in the hollow of the punch 440 to fall to the punching platform 480, and then the control valve is connected with the compressed air of the blowing nozzle, so that the high-speed air blown by the blowing nozzle blows the punched rubber particles away from the punching platform for collection.

Example 2:

a high-strength rubber composite material for a high-speed rail sealing element comprises the following raw materials in parts by weight:

55 parts of nitrile rubber,

20 portions of natural rubber,

9 parts of phenylate phenylene silicone rubber,

5 parts of maleic anhydride grafted polyethylene,

4 portions of white carbon black,

0.5 part of aluminum oxide,

1 part of zinc oxide,

0.07 part of toluene diisocyanate,

2.5 parts of anti-aging agent,

2 portions of heat stabilizer,

And 2 parts of a crosslinking agent.

In this example, the crosslinking agent is a mixture of zinc peroxide and a rubber crosslinking agent VP-4L.

In the embodiment, the mass ratio of the crosslinking agent zinc peroxide to the rubber crosslinking agent VP-4L in the mixture of the crosslinking agent zinc peroxide and the rubber crosslinking agent VP-4L is 1: 2.5.

in this embodiment, the anti-aging agent is an anti-aging agent 4010.

In this example, the thermal stabilizer is stearic acid.

In this embodiment, the alumina is nano alumina.

In this embodiment, the zinc oxide is nano zinc oxide.

In this embodiment, the preparation method of the high-strength rubber composite material for the high-speed rail sealing member includes the following steps:

1) feeding natural rubber into an internal mixer, masticating for 15min at the temperature of 140 ℃, and discharging; storing the masticated natural rubber at room temperature for more than 48h for later use;

2) mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber;

3) feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing for 15min at the temperature of 103 ℃; then continuously mixing for 12min at the temperature of 113 ℃; then, cooling to 108 ℃, adding toluene diisocyanate and a cross-linking agent, and continuously mixing for 10 min; then discharging rubber, turning over by an open mill, then discharging and cooling;

4) carrying out calendering molding on the cooled rubber material in the step 3) by a calender;

5) cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes;

6) and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.

Example 3:

a high-strength rubber composite material for a high-speed rail sealing element comprises the following raw materials in parts by weight:

68 parts of nitrile rubber,

26 parts of natural rubber,

12 parts of phenylate phenylene silicon rubber,

7 parts of maleic anhydride grafted polyethylene,

7 portions of white carbon black,

0.8 part of aluminum oxide,

1.4 parts of zinc oxide,

0.09 part of toluene diisocyanate,

4.5 portions of anti-aging agent,

4 portions of heat stabilizer,

4 parts of a crosslinking agent.

In this example, the crosslinking agent is a mixture of zinc peroxide and a rubber crosslinking agent VP-4L.

In the embodiment, the mass ratio of the crosslinking agent zinc peroxide to the rubber crosslinking agent VP-4L in the mixture of the crosslinking agent zinc peroxide and the rubber crosslinking agent VP-4L is 1: 3.2.

in this embodiment, the anti-aging agent is an anti-aging agent 4010.

In this example, the thermal stabilizer is stearic acid.

In this embodiment, the alumina is nano alumina.

In this embodiment, the zinc oxide is nano zinc oxide.

In this embodiment, the preparation method of the high-strength rubber composite material for the high-speed rail sealing member includes the following steps:

1) feeding natural rubber into an internal mixer, masticating for 10min at the temperature of 150 ℃, and discharging; storing the masticated natural rubber at room temperature for more than 48h for later use;

2) mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber;

3) feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing for 10min at the temperature of 108 ℃; then continuously mixing for 8min at the temperature of 118 ℃; then, cooling to the temperature of 110 ℃, adding toluene diisocyanate and a cross-linking agent, and continuously mixing for 8 min; then discharging rubber, turning over by an open mill, then discharging and cooling;

4) carrying out calendering molding on the cooled rubber material in the step 3) by a calender;

5) cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes;

6) and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.

Example 4:

a high-strength rubber composite material for a high-speed rail sealing element comprises the following raw materials in parts by weight:

61 parts of nitrile rubber,

23 parts of natural rubber,

11 parts of phenylate phenylene silicone rubber,

6 parts of maleic anhydride grafted polyethylene,

5.5 parts of white carbon black,

0.65 part of aluminum oxide,

1.2 parts of zinc oxide,

0.08 portion of toluene diisocyanate,

3 portions of anti-aging agent,

3 parts of heat stabilizer,

3 parts of a crosslinking agent.

In this example, the crosslinking agent is a mixture of zinc peroxide and a rubber crosslinking agent VP-4L.

In the embodiment, the mass ratio of the crosslinking agent zinc peroxide to the rubber crosslinking agent VP-4L in the mixture of the crosslinking agent zinc peroxide and the rubber crosslinking agent VP-4L is 1: 2.8.

in this embodiment, the anti-aging agent is an anti-aging agent 4010.

In this example, the thermal stabilizer is stearic acid.

In this embodiment, the alumina is nano alumina.

In this embodiment, the zinc oxide is nano zinc oxide.

In this embodiment, the preparation method of the high-strength rubber composite material for the high-speed rail sealing member includes the following steps:

1) feeding natural rubber into an internal mixer, masticating for 13min at the temperature of 145 ℃, and discharging; storing the masticated natural rubber at room temperature for more than 48h for later use;

2) mixing the nitrile rubber, the natural rubber subjected to mastication in the step 1), the phenylene ether silicone rubber and the maleic anhydride grafted polyethylene in an open mill, and uniformly mixing to obtain mixed silicone rubber;

3) feeding the mixed silicon rubber into an internal mixer, adding white carbon black, aluminum oxide, zinc oxide, an anti-aging agent and a heat stabilizer, and mixing for 13min at the temperature of 106 ℃; then continuously mixing for 10min at the temperature of 115 ℃; then, cooling to 109 ℃, adding toluene diisocyanate and a cross-linking agent, and continuously mixing for 9 min; then discharging rubber, turning over by an open mill, then discharging and cooling;

4) carrying out calendering molding on the cooled rubber material in the step 3) by a calender;

5) cutting and processing the semi-finished product after calendaring to form rubber particles with regular shapes;

6) and (3) feeding the rubber particles into a mold cavity of a mold, and vulcanizing by a vulcanizing machine to obtain a finished sealing ring.

The high strength rubber composite material for high speed railway sealing member obtained in examples 2 to 4 of the present invention and the general rubber sealing material were subjected to the following performance tests (test with reference to standard HG/T2579-94), and the test results are shown in table 1:

TABLE 1

From the analysis of the above table, the high-strength rubber composite material for the high-speed rail sealing element has high tensile strength and excellent mechanical property; also has good elasticity and low compression set.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.