CN112976478A - Preparation method of automobile shock absorber bushing - Google Patents

Preparation method of automobile shock absorber bushing Download PDF

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Publication number
CN112976478A
CN112976478A CN202110144340.1A CN202110144340A CN112976478A CN 112976478 A CN112976478 A CN 112976478A CN 202110144340 A CN202110144340 A CN 202110144340A CN 112976478 A CN112976478 A CN 112976478A
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CN
China
Prior art keywords
extrusion
kneading
discharging
driving
rubber material
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Granted
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CN202110144340.1A
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Chinese (zh)
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CN112976478B (en
Inventor
方勇
胡超
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Ningguo Ruipu Seals Co ltd
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Ningguo Ruipu Seals Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7461—Combinations of dissimilar mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/02—Ingredients treated with inorganic substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof

Abstract

The invention discloses a preparation method of a shock absorber bushing for an automobile, which comprises the following steps: step S1: surface treatment and adhesive spraying of the metal mounting sleeve; step S2: the composite rubber material and the metal mounting sleeve are subjected to injection vulcanization molding; step S3: trimming and inspecting the bush blank to obtain a finished product of the damper bush; the composite rubber material is prepared by the following steps: step A1: modifying the surface of the high wear-resistant carbon black; step A2: preparing a soft rubber material; step A3: kneading and dispersing the soft rubber material and the modified high-wear-resistance carbon black; step A4: discharging after extrusion to obtain a composite rubber material; the high-efficiency dispersion mixing roll comprises a rack, a kneading part, an extruding part and a discharging part, wherein the discharging part is arranged at the top end of the rack, the extruding part is positioned above the discharging part, and the kneading part is positioned above the extruding part; the invention solves the problems of good thermal aging resistance and dynamic fatigue performance of the shock absorber bushing on the basis of good elasticity.

Description

Preparation method of automobile shock absorber bushing
Technical Field
The invention belongs to the technical field of damper bushing preparation, and particularly relates to a preparation method of a damper bushing for an automobile.
Background
The shock absorber bushing is an important accessory on an automobile shock absorber, is used for an automobile suspension system, is used for supporting the quality of a frame, relieves the vibration and the impact of uneven roads to an automobile, quickly attenuates the vibration, improves the driving comfort, reduces the dynamic stress of each part of an automobile body and prolongs the service life of the automobile. At present, the demand on the market is extremely large according to the consumption situation on the market.
Automobiles have become popular vehicles, and increasingly higher requirements are placed on energy conservation, environmental protection, riding comfort and handling stability, and reliability of automobiles. The automobile suspension system directly influences the riding comfort and the operation stability of an automobile, the spring is the core of the dynamic performance of the suspension system, and as the rubber material has the advantages of light weight, impact resistance, easiness in absorbing high-frequency vibration and the like, and the rubber and metal bonding technology is improved, a rubber bushing formed by combining metal and rubber is widely applied to a supporting device in the automobile suspension. The shock absorber bushing is required to have the performance of buffering impact under the vibration condition, so that the rubber material of the shock absorber bushing is required to have the thermal aging resistance and the dynamic fatigue resistance on the basis of good elasticity. But the shock absorber bushing with excellent performance needs to be imported from foreign countries at present, and the cost is higher.
Disclosure of Invention
The invention aims to provide a preparation method of a shock absorber bushing for an automobile, which solves the problem that how to enable the shock absorber bushing to have good thermal aging resistance and dynamic fatigue performance on the basis of good elasticity in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a preparation method of a shock absorber bushing for an automobile specifically comprises the following steps:
step S1: degreasing, sand blasting and dipping phosphorization treatment are carried out on the surface of the metal mounting sleeve, an adhesive is sprayed on the surface of the treated metal mounting sleeve, the spraying thickness of the adhesive is controlled to be 10-20 mu m, then the metal mounting sleeve is placed in a blast oven at the temperature of 60-80 ℃, and drying treatment is carried out for 30-40min for later use;
step S2: adding the composite rubber material into a vacuum injection flat vulcanizing machine for preheating, placing the metal mounting sleeve processed in the step S1 into a mold, injecting the preheated composite rubber material into the mold, and controlling the injection pressure to be 140-2Then carrying out vulcanization treatment at the temperature of 160-170 ℃ and the vulcanization pressure of 170-190kgf/cm2The vulcanizing time is 6-7 min;
step S3: and trimming the vulcanized lining blank, and checking whether bubbles and impurities exist, thus obtaining the finished product of the damper lining.
Further, the adhesive is prepared by mixing Kellock 205 and xylene according to a mass ratio of 2.5-3: 4.
Further, the composite rubber material is prepared by the following steps:
step A1: adding 20-30 parts by weight of high-wear-resistance carbon black into a sulfuric acid solution with the mass fraction of 8-10% to soak for 2-4h, washing filter residues to be neutral by using deionized water after filtering, adding the filter residues into a saturated sodium bicarbonate solution to soak for 1-1.5h, washing the filter residues to be neutral by using the deionized water after filtering, and drying the filter residues at the temperature of 120-150 ℃ to obtain the modified high-wear-resistance carbon black;
step A2: adding 60-80 parts by weight of natural rubber, 5-7 parts by weight of zinc oxide, 1-3 parts by weight of stearic acid, 1-3 parts by weight of a sulfenamide accelerator, 2-6 parts by weight of an anti-aging agent and 10-12 parts by weight of naphthenic oil into an internal mixer, and stirring and mixing uniformly at the temperature of 60-80 ℃ to obtain a soft rubber material;
step A3: adding a soft rubber material and modified high-wear-resistance carbon black into a kneading box of a high-efficiency dispersion mixing roll, starting an extrusion motor to enable a driving extrusion roll and a driven extrusion roll to rotate in opposite directions, driving an extrusion driving belt wheel on the driving extrusion roll to drive a kneading driven belt wheel to rotate, enabling a first kneading paddle to rotate, driving a second kneading paddle to rotate, kneading and dispersing the modified high-wear-resistance carbon black in the soft rubber material, and kneading for 3-5h to obtain a reinforced rubber material;
step A4: controlling the extrusion motor to reversely rotate, enabling the driving extrusion roller and the driven extrusion roller to rotate in opposite directions, extruding the reinforced rubber material in the kneading box body to the lower part inside the extrusion shell body through the driving extrusion roller and the driven extrusion roller, enabling the reinforced rubber material to enter the discharge through hole from the discharging groove, starting the discharging motor, enabling the discharging screw shaft to rotate, pushing the reinforced rubber material in the discharge through hole to the material distributing head by the discharging screw shaft for extrusion, and enabling the extruded material to fall out from the discharging frame to obtain the compounded rubber material.
Further, the anti-aging agent is formed by mixing one or two of an anti-aging agent RD and an anti-aging agent 4010NA in any proportion.
Further, the high-efficiency dispersion mixing roll comprises a frame, a kneading part, an extrusion part and a discharge part, wherein the discharge part is arranged at the top end of the frame, the extrusion part is positioned above the discharge part, and the kneading part is positioned above the extrusion part;
the discharging part comprises a discharging speed reducer, a discharging motor, a base, a discharging frame, a supporting shaft barrel, a discharging frame, a discharging screw shaft and a distributing head, the bottom end of the base is fixedly connected with the top end of the rack, a groove is formed in the center of the base, the discharging frame is fixedly installed in the groove, a discharging through hole is formed in the discharging frame, the discharging through hole penetrates through two sides of the discharging frame, a discharging groove is formed in the upper surface of the discharging frame, the discharging groove is communicated with the discharging through hole, the supporting shaft barrel is fixedly installed on one side of the discharging frame, the supporting shaft barrel is communicated with one end of the discharging through hole, the discharging screw shaft is installed in the supporting shaft barrel, one end of the discharging screw shaft is rotatably connected with the supporting shaft barrel, the distributing head is rotatably installed at the other end of the discharging screw shaft, the distributing head is fixedly installed at the other end of the discharging through hole, and the discharging frame is fixedly, one side that the play work or material rest is close to the support shaft section of thick bamboo is equipped with ejection of compact speed reducer, the bottom of ejection of compact speed reducer and the top fixed connection of frame, the top installation of ejection of compact speed reducer is fixed with ejection of compact motor, the output of ejection of compact motor and the input fixed connection of ejection of compact speed reducer, the output and the ejection of compact screw axis fixed connection of ejection of compact speed reducer.
Further, the extrusion part comprises an extrusion speed reducer, an extrusion motor, a speed reducer fixing seat, an extrusion shell, a driving extrusion roller, a driven extrusion roller, an extrusion driving gear, an extrusion driven gear, an extrusion driving belt wheel and an extrusion driven gear, the bottom end of the extrusion shell is fixedly connected with the discharge frame, the interior of the extrusion shell is communicated with the discharge chute, the driving extrusion roller and the driven extrusion roller are oppositely arranged inside the extrusion shell, the two ends of the driving extrusion roller and the driven extrusion roller are both rotatably connected with the extrusion shell, one end of the driving extrusion roller extends to the exterior of the extrusion shell and is fixedly provided with the extrusion driving gear and the extrusion driving belt wheel, the extrusion driving belt wheel is positioned on one side of the extrusion driving gear, which is far away from the extrusion shell, one end of the driven extrusion roller extends to the exterior of the extrusion shell and is fixedly provided with the extrusion driven gear, and the extrusion driving gear, one side that initiative squeeze roll is close to extrusion driving pulley is equipped with the extrusion speed reducer, the below installation of extrusion speed reducer is fixed with the speed reducer fixing base, the top fixed connection of the bottom of speed reducer fixing base and frame, the top installation of extrusion speed reducer is fixed with the extrusion motor, the output of extrusion motor and the input fixed connection of extrusion speed reducer, the output of extrusion speed reducer and the one end fixed connection of initiative squeeze roll.
Further, the kneading part comprises a kneading box body, a first kneading paddle, a second kneading paddle, a kneading driving gear, a kneading driven pulley and a kneading driven gear, the bottom end of the kneading box body is fixedly connected with the top end of the extrusion shell, the interior of the kneading box body is communicated with the interior of the extrusion shell, the first kneading paddle and the second kneading paddle are oppositely arranged in the kneading box body, one end of the first kneading paddle is rotatably connected with the side wall of the kneading box body, the other end of the first kneading paddle penetrates through the side wall of the kneading box body and is fixedly provided with the kneading driving gear and the kneading driven pulley, the kneading driven pulley is positioned on one side of the kneading driving gear, which is far away from the kneading box body, the kneading driven pulley is in transmission connection with the extrusion driving pulley through a belt, one end of the second kneading paddle is rotatably connected with the side wall of the kneading box body, the other end of the second kneading paddle penetrates through the side wall of the, the kneading driven gear is meshed with the kneading driving gear.
The invention has the beneficial effects that:
according to the invention, the compound rubber material is preheated by adopting an injection vulcanization molding method to improve the fluidity, so that the quality stability of the product is improved; the vulcanizing time can be obviously shortened by setting higher vulcanizing temperature and vulcanizing pressure;
according to the invention, natural rubber with good comprehensive performance is selected as a main body material, and formula raw materials such as modified high-wear-resistance carbon black and an anti-aging agent are added, so that an elastic layer outside a metal mounting sleeve has good elasticity, good thermal aging resistance and dynamic fatigue performance, and the automobile shock absorber bushing prepared by the method has the tensile strength of 25.44MPa, the compression permanent deformation value (70 ℃ x 24h) of 26.3, and the tensile strength is reduced by 12.6% after the automobile shock absorber bushing is subjected to hot air aging treatment at 70 ℃ for 96 h;
according to the invention, by using the efficient kneading dispersion machine, the soft rubber material and the modified high-wear-resistance carbon black are kneaded and dispersed firstly through the arrangement of the kneading part, the extrusion motor is started, the driving extrusion roller and the driven extrusion roller are controlled to rotate reversely, and the first kneading paddle and the second kneading paddle are driven to rotate simultaneously, so that on one hand, the number of driving parts can be reduced, the equipment cost is reduced, on the other hand, the soft rubber material and the modified high-wear-resistance carbon black at the bottom end of the kneading box body can be effectively dispersed through the reverse rotation of the driving extrusion roller and the driven extrusion roller, the modified high-wear-resistance carbon black is prevented from being arranged above the driving extrusion roller and the driven extrusion roller, the dispersibility of the modified high-wear-resistance carbon black in the soft rubber material is improved, and the reinforcing effect of the; after control extrusion motor reversal, can carry out the preforming with the reinforcing rubber material that the dispersion obtained of kneading in the kneading box, further reduce the possibility of modified high wear-resisting carbon black reunion, fall in the ejection of compact through-hole after the extrusion, the stirring effect of ejection of compact screw axis again, when realizing the ejection of compact, further mix the dispersion again to reinforcing rubber material, through kneading the process once promptly, can realize the mixed dispersion effect of cubic difference, make modified high wear-resisting carbon black obtain better dispersibility in the soft material of rubber, in order to obtain better reinforcement effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a high-efficiency dispersing mixer according to the present invention;
FIG. 2 is a front view of the high efficiency dispersive mixing roll of the present invention;
FIG. 3 is a schematic view of the structure of a kneading section of the present invention;
FIG. 4 is a schematic view of the structure of the pressing part according to the present invention;
FIG. 5 is a schematic structural view of the discharge portion of the present invention;
FIG. 6 is a schematic view of the internal structure of the discharging part of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a frame; 2. a kneading section; 201. a kneading box body; 202. a first kneading paddle; 203. a second kneading paddle; 204. kneading the driving gear; 205. kneading the driven pulley; 206. kneading the driven gear; 3. a pressing section; 301. extruding a speed reducer; 302. an extrusion motor; 303. a speed reducer fixing seat; 304. extruding the shell; 305. a driving squeeze roll; 306. a driven squeeze roll; 307. extruding the driving gear; 308. extruding the driving belt wheel; 309. extruding the driven gear; 4. a discharge part; 401. a discharging speed reducer; 402. a discharging motor; 403. a base; 404. a discharging frame; 405. a support shaft cylinder; 406. discharging the material frame; 407. a discharge through hole; 408. a discharging groove; 409. a discharge screw shaft; 410. and (4) distributing heads.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a shock absorber bushing for an automobile specifically comprises the following steps:
step S1: degreasing, sand blasting and dipping phosphorization treatment are carried out on the surface of the metal mounting sleeve, an adhesive is sprayed on the surface of the treated metal mounting sleeve, the spraying thickness of the adhesive is controlled to be 10 micrometers, and then the metal mounting sleeve is placed in a blast oven at 60 ℃ and dried for 30min for later use;
step S2: adding the composite rubber material into a vacuum injection flat vulcanizing machine for preheating, placing the metal mounting sleeve processed in the step S1 into a mold, injecting the preheated composite rubber material into the mold, and controlling the injection pressure to be 140kgf/cm2Then carrying out vulcanization treatment at 160 ℃ under a vulcanization pressure of 170kgf/cm2The vulcanization time is 6 min;
step S3: and trimming the vulcanized lining blank, and checking whether bubbles and impurities exist, thus obtaining the finished product of the damper lining.
The adhesive is formed by mixing Kellock 205 and xylene according to a mass ratio of 2.5: 4.
The composite rubber material is prepared by the following steps:
step A1: adding 20 parts by weight of high wear-resistant carbon black into a sulfuric acid solution with the mass fraction of 8% to be soaked for 2 hours, washing filter residues to be neutral by using deionized water after filtering, adding the filter residues into a saturated sodium bicarbonate solution to be soaked for 1 hour, washing the filter residues to be neutral by using the deionized water after filtering, and drying the filter residues at the temperature of 120 ℃ to obtain modified high wear-resistant carbon black;
step A2: adding 60 parts by weight of natural rubber, 5 parts by weight of zinc oxide, 1 part by weight of stearic acid, 1 part by weight of sulfenamide accelerator, 2 parts by weight of anti-aging agent and 10 parts by weight of naphthenic oil into an internal mixer, and stirring and mixing uniformly at the temperature of 60 ℃ to obtain a rubber soft material;
step A3: referring to fig. 1-6, adding a soft rubber material and modified high wear-resistant carbon black into a kneading box 201 of a high-efficiency dispersing mixer, starting an extrusion motor 302 to rotate a driving extrusion roller 305 and a driven extrusion roller 306 in opposite directions, simultaneously driving an extrusion driving pulley 308 on the driving extrusion roller 305 to drive a kneading driven pulley 205 to rotate, driving a first kneading paddle 202 to rotate, driving a second kneading paddle 203 to rotate by the first kneading paddle 202, kneading and dispersing the modified high wear-resistant carbon black in the soft rubber material, and kneading for 3 hours to obtain a reinforced rubber material;
step A4: controlling the extrusion motor 302 to rotate reversely, enabling the driving extrusion roller 305 and the driven extrusion roller 306 to rotate oppositely, extruding the reinforced rubber material in the kneading box 201 to the lower part inside the extrusion shell 304 through the driving extrusion roller 305 and the driven extrusion roller 306, enabling the reinforced rubber material to enter the discharge through hole 407 from the blanking groove 408, starting the discharge motor 402 to enable the discharge screw shaft 409 to rotate, pushing the reinforced rubber material in the discharge through hole 407 to the material distributing head 410 by the discharge screw shaft 409 to be extruded, and enabling the extruded material to fall out from the discharge frame 406, thus obtaining the composite rubber material.
The anti-aging agent is an anti-aging agent RD.
Example 2
A preparation method of a shock absorber bushing for an automobile specifically comprises the following steps:
step S1: degreasing, sand blasting and dipping phosphorization treatment are carried out on the surface of the metal mounting sleeve, an adhesive is sprayed on the surface of the treated metal mounting sleeve, the spraying thickness of the adhesive is controlled to be 15 micrometers, and then the metal mounting sleeve is placed in a blast oven at 70 ℃ and dried for 35min for later use;
step S2: adding the composite rubber material into a vacuum injectionPreheating in a flat vulcanizing machine, putting the metal mounting sleeve processed in the step S1 into a mould, injecting the preheated composite rubber material into the mould, and controlling the injection pressure to be 150kgf/cm2Then, vulcanization treatment was carried out at a vulcanization temperature of 165 ℃ and a vulcanization pressure of 180kgf/cm2The vulcanization time is 6 min;
step S3: and trimming the vulcanized lining blank, and checking whether bubbles and impurities exist, thus obtaining the finished product of the damper lining.
The adhesive is formed by mixing Kellock 205 and xylene according to a mass ratio of 2.5: 4.
The composite rubber material is prepared by the following steps:
step A1: adding 25 parts by weight of high-wear-resistance carbon black into a 9% sulfuric acid solution, soaking for 3 hours, filtering, washing filter residues to be neutral by using deionized water, adding the filter residues into a saturated sodium bicarbonate solution, soaking for 1 hour, filtering, washing the filter residues to be neutral by using deionized water, and drying at the temperature of 130 ℃ to obtain modified high-wear-resistance carbon black;
step A2: adding 70 parts by weight of natural rubber, 6 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 2 parts by weight of a sulfenamide accelerator, 4 parts by weight of an anti-aging agent and 11 parts by weight of naphthenic oil into an internal mixer, and stirring and mixing uniformly at the temperature of 70 ℃ to obtain a rubber soft material;
step A3: referring to fig. 1-6, adding a soft rubber material and modified high wear-resistant carbon black into a kneading box 201 of a high-efficiency dispersing mixer, starting an extrusion motor 302 to rotate a driving extrusion roller 305 and a driven extrusion roller 306 in opposite directions, simultaneously driving an extrusion driving pulley 308 on the driving extrusion roller 305 to drive a kneading driven pulley 205 to rotate, driving a first kneading paddle 202 to rotate, driving a second kneading paddle 203 to rotate by the first kneading paddle 202, kneading and dispersing the modified high wear-resistant carbon black in the soft rubber material, and kneading for 4 hours to obtain a reinforced rubber material;
step A4: controlling the extrusion motor 302 to rotate reversely, enabling the driving extrusion roller 305 and the driven extrusion roller 306 to rotate oppositely, extruding the reinforced rubber material in the kneading box 201 to the lower part inside the extrusion shell 304 through the driving extrusion roller 305 and the driven extrusion roller 306, enabling the reinforced rubber material to enter the discharge through hole 407 from the blanking groove 408, starting the discharge motor 402 to enable the discharge screw shaft 409 to rotate, pushing the reinforced rubber material in the discharge through hole 407 to the material distributing head 410 by the discharge screw shaft 409 to be extruded, and enabling the extruded material to fall out from the discharge frame 406, thus obtaining the composite rubber material.
The anti-aging agent is anti-aging agent 4010 NA.
Example 3
A preparation method of a shock absorber bushing for an automobile specifically comprises the following steps:
step S1: degreasing, sand blasting and dipping phosphorization treatment are carried out on the surface of the metal mounting sleeve, an adhesive is sprayed on the surface of the treated metal mounting sleeve, the spraying thickness of the adhesive is controlled to be 20 micrometers, and then the metal mounting sleeve is placed in a blast oven at 80 ℃ and dried for 40min for later use;
step S2: adding the composite rubber material into a vacuum injection flat vulcanizing machine for preheating, placing the metal mounting sleeve processed in the step S1 into a mold, injecting the preheated composite rubber material into the mold, and controlling the injection pressure to be 160kgf/cm2Then carrying out vulcanization treatment at 170 ℃ under a vulcanization pressure of 190kgf/cm2The vulcanization time is 7 min;
step S3: and trimming the vulcanized lining blank, and checking whether bubbles and impurities exist, thus obtaining the finished product of the damper lining.
The adhesive is formed by mixing Kellock 205 and xylene according to a mass ratio of 3: 4.
The composite rubber material is prepared by the following steps:
step A1: adding 30 parts by weight of high-wear-resistance carbon black into a sulfuric acid solution with the mass fraction of 10% to be soaked for 4 hours, washing filter residues to be neutral by using deionized water after filtering, adding the filter residues into a saturated sodium bicarbonate solution to be soaked for 1.5 hours, washing the filter residues to be neutral by using the deionized water after filtering, and drying the filter residues at the temperature of 150 ℃ to obtain modified high-wear-resistance carbon black;
step A2: adding 80 parts by weight of natural rubber, 7 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 3 parts by weight of a sulfenamide accelerator, 6 parts by weight of an anti-aging agent and 12 parts by weight of naphthenic oil into an internal mixer, and stirring and mixing uniformly at the temperature of 80 ℃ to obtain a rubber soft material;
step A3: referring to fig. 1-6, adding a soft rubber material and modified high wear-resistant carbon black into a kneading box 201 of a high-efficiency dispersing mixer, starting an extrusion motor 302 to rotate a driving extrusion roller 305 and a driven extrusion roller 306 in opposite directions, simultaneously driving an extrusion driving pulley 308 on the driving extrusion roller 305 to drive a kneading driven pulley 205 to rotate, driving a first kneading paddle 202 to rotate, driving a second kneading paddle 203 to rotate by the first kneading paddle 202, kneading and dispersing the modified high wear-resistant carbon black in the soft rubber material, and kneading for 5 hours to obtain a reinforced rubber material;
step A4: controlling the extrusion motor 302 to rotate reversely, enabling the driving extrusion roller 305 and the driven extrusion roller 306 to rotate oppositely, extruding the reinforced rubber material in the kneading box 201 to the lower part inside the extrusion shell 304 through the driving extrusion roller 305 and the driven extrusion roller 306, enabling the reinforced rubber material to enter the discharge through hole 407 from the blanking groove 408, starting the discharge motor 402 to enable the discharge screw shaft 409 to rotate, pushing the reinforced rubber material in the discharge through hole 407 to the material distributing head 410 by the discharge screw shaft 409 to be extruded, and enabling the extruded material to fall out from the discharge frame 406, thus obtaining the composite rubber material.
The anti-aging agent is formed by mixing an anti-aging agent RD and an anti-aging agent 4010NA according to the proportion of 1: 1.
Referring to fig. 1-6, the high efficiency dispersing and mixing machine of the above embodiment comprises a frame 1, a kneading section 2, an extruding section 3 and a discharging section 4, wherein the discharging section 4 is installed at the top end of the frame 1, the extruding section 3 is located above the discharging section 4, and the kneading section 2 is located above the extruding section 3;
the discharging part 4 comprises a discharging speed reducer 401, a discharging motor 402, a base 403, a discharging frame 404, a supporting shaft cylinder 405, a discharging frame 406, a discharging screw shaft 409 and a material distributing head 410, the bottom end of the base 403 is fixedly connected with the top end of the frame 1, a groove is formed in the center of the base 403, the discharging frame 404 is fixedly installed in the groove, a discharging through hole 407 is formed in the discharging frame 404, the discharging through hole 407 penetrates through two sides of the discharging frame 404, a discharging groove 408 is formed in the upper surface of the discharging frame 404, the discharging groove 408 is communicated with the discharging through hole 407, the supporting shaft cylinder 405 is fixedly installed on one side of the discharging frame 404, the supporting shaft cylinder 405 is communicated with one end of the discharging through hole 407, the discharging screw shaft 409 is installed in the supporting shaft cylinder 405, one end of the discharging screw shaft 409 is rotatably connected with the supporting shaft cylinder 405, the material distributing head 410 is rotatably installed at the other end of the discharging screw shaft, the material distributing head 410 is fixedly installed at the other end of the material discharging through hole 407, the material discharging frame 406 is fixedly installed at the other side of the material discharging frame 404, a material discharging speed reducer 401 is arranged at one side of the material discharging frame 404 close to the supporting shaft barrel 405, the bottom end of the material discharging speed reducer 401 is fixedly connected with the top end of the machine frame 1, a material discharging motor 402 is fixedly installed at the top end of the material discharging speed reducer 401, the output end of the material discharging motor 402 is fixedly connected with the input end of the material discharging speed reducer 401, and the output end of the material discharging speed reducer 401 is fixedly connected with the.
The extrusion part 3 comprises an extrusion speed reducer 301, an extrusion motor 302, a speed reducer fixing seat 303, an extrusion shell 304, a driving extrusion roller 305, a driven extrusion roller 306, an extrusion driving gear 307, an extrusion driven gear 309, an extrusion driving pulley 308 and an extrusion driven gear 309, the bottom end of the extrusion shell 304 is fixedly connected with a discharge frame 404, the interior of the extrusion shell 304 is communicated with a blanking slot 408, the driving extrusion roller 305 and the driven extrusion roller 306 are oppositely arranged in the extrusion shell 304, two ends of the driving extrusion roller 305 and the driven extrusion roller 306 are both rotatably connected with the extrusion shell 304, one end of the driving extrusion roller 305 extends to the exterior of the extrusion shell 304 and is fixedly provided with the extrusion driving gear 307 and the extrusion driving pulley 308, the extrusion driving pulley 308 is positioned at one side of the extrusion driving gear 307 far away from the extrusion shell 304, one end of the driven extrusion roller 306 extends to the exterior of the extrusion shell 304 and is fixedly provided with the extrusion driven gear 309, the extrusion driving gear 307 meshes with extrusion driven gear 309 mutually, one side that the initiative squeeze roll 305 is close to extrusion driving pulley 308 is equipped with extrusion speed reducer 301, the below installation of extrusion speed reducer 301 is fixed with speed reducer fixing base 303, the bottom of speed reducer fixing base 303 and the top fixed connection of frame 1, the top installation of extrusion speed reducer 301 is fixed with extrusion motor 302, the output of extrusion motor 302 and the input fixed connection of extrusion speed reducer 301, the output of extrusion speed reducer 301 and the one end fixed connection of initiative squeeze roll 305.
The kneading part 2 comprises a kneading box 201, a first kneading paddle 202, a second kneading paddle 203, a kneading driving gear 204, a kneading driven pulley 205 and a kneading driven gear 206, the bottom end of the kneading box 201 is fixedly connected with the top end of an extrusion shell 304, the interior of the kneading box 201 is communicated with the interior of the extrusion shell 304, the first kneading paddle 202 and the second kneading paddle 203 are oppositely arranged in the kneading box 201, one end of the first kneading paddle 202 is rotatably connected with the side wall of the kneading box 201, the other end of the first kneading paddle 202 penetrates through the side wall of the kneading box 201 and is fixedly provided with the kneading driving gear 204 and the kneading driven pulley 205, the kneading driven pulley 205 is positioned on one side of the kneading driving gear 204 far away from the kneading box 201, the kneading driven pulley 205 is in belt transmission connection with the extrusion driving pulley 308, and one end of the second kneading paddle 203 is rotatably connected with the side wall of the kneading box 201, the other end of the second kneading paddle 203 penetrates the side wall of the kneading box 201 and is fixed with a kneading driven gear 206, and the kneading driven gear 206 is engaged with the kneading driving gear 204.
The working principle of the invention is as follows:
when the high-efficiency dispersion mixing roll is used, the soft rubber material and the modified high-wear-resistance carbon black are added into the kneading box 201, the extrusion motor 302 is started, the output end of the extrusion motor 302 drives the input end of the extrusion speed reducer 301 to rotate, the output end of the extrusion speed reducer 301 drives the driving extrusion roller 305 to rotate, the extrusion driving gear 307 on the driving extrusion roller 305 drives the extrusion driven gear 309 to rotate, the extrusion driven gear 309 drives the driven extrusion roller 306 to rotate, so that the driving extrusion roller 305 and the driven extrusion roller 306 rotate in opposite directions, meanwhile, the extrusion driving pulley 308 on the driving extrusion roller 305 drives the kneading driven pulley 205 to rotate through a belt, the kneading driven pulley 205 drives the first kneading paddle 202 to rotate, the kneading driving gear 204 on the first kneading paddle 202 drives the kneading driven gear 206 to rotate, the kneading driven gear 206 drives the second kneading paddle 203 to rotate, and the first kneading paddle 202 and the second kneading paddle 203 rotate oppositely, kneading and dispersing the modified high-wear-resistance carbon black in the soft rubber material, and kneading for 3-5h to obtain a reinforced rubber material;
controlling the extrusion motor 302 to reversely rotate, wherein the output end of the extrusion motor 302 drives the input end of the extrusion speed reducer 301 to rotate, the output end of the extrusion speed reducer 301 drives the driving extrusion roller 305 to rotate, the driving extrusion roller 305 drives the driven extrusion roller 306 to rotate through the meshing of the extrusion driving gear 307 and the extrusion driven gear 309, so that the driving extrusion roller 305 and the driven extrusion roller 306 rotate oppositely, the reinforced rubber material in the kneading box 201 is extruded to the lower part inside the extrusion shell 304 through the driving extrusion roller 305 and the driven extrusion roller 306, the reinforced rubber material enters the discharge through hole 407 from the discharge chute 408, the discharge motor 402 is started, the output end of the discharge motor 402 drives the input end of the discharge speed reducer 401 to rotate, the output end of the discharge speed reducer 401 drives the discharge screw shaft 409 to rotate, the discharge screw shaft 409 pushes the reinforced rubber material in the discharge through hole 407 to the material distributing head 410 to extrude, and the extruded material, obtaining the composite rubber material.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.

Claims (7)

1. A preparation method of a shock absorber bushing for an automobile is characterized by comprising the following steps: the method specifically comprises the following steps:
step S1: degreasing, sand blasting and dipping phosphorization treatment are carried out on the surface of the metal mounting sleeve, an adhesive is sprayed on the surface of the treated metal mounting sleeve, the spraying thickness of the adhesive is controlled to be 10-20 mu m, then the metal mounting sleeve is placed in a blast oven at the temperature of 60-80 ℃, and drying treatment is carried out for 30-40min for later use;
step S2: adding the composite rubber material into a vacuum injection flat vulcanizing machine for preheating, placing the metal mounting sleeve processed in the step S1 into a mold, injecting the preheated composite rubber material into the mold, and controlling the injection pressure to be 140-2Then carrying out vulcanization treatment at the temperature of 160-170 ℃ and the vulcanization pressure of 170-190kgf/cm2The vulcanizing time is 6-7 min;
step S3: and trimming the vulcanized lining blank, and checking whether bubbles and impurities exist, thus obtaining the finished product of the damper lining.
2. The manufacturing method of a damper bushing for an automobile according to claim 1, characterized in that: the adhesive is formed by mixing Kellock 205 and xylene according to the mass ratio of 2.5-3: 4.
3. The manufacturing method of a damper bushing for an automobile according to claim 1, characterized in that: the composite rubber material is prepared by the following steps:
step A1: adding 20-30 parts by weight of high-wear-resistance carbon black into a sulfuric acid solution with the mass fraction of 8-10% to soak for 2-4h, washing filter residues to be neutral by using deionized water after filtering, adding the filter residues into a saturated sodium bicarbonate solution to soak for 1-1.5h, washing the filter residues to be neutral by using the deionized water after filtering, and drying the filter residues at the temperature of 120-150 ℃ to obtain the modified high-wear-resistance carbon black;
step A2: adding 60-80 parts by weight of natural rubber, 5-7 parts by weight of zinc oxide, 1-3 parts by weight of stearic acid, 1-3 parts by weight of a sulfenamide accelerator, 2-6 parts by weight of an anti-aging agent and 10-12 parts by weight of naphthenic oil into an internal mixer, and stirring and mixing uniformly at the temperature of 60-80 ℃ to obtain a soft rubber material;
step A3: adding a soft rubber material and modified high-wear-resistance carbon black into a kneading box body (201) of a high-efficiency dispersing mixer, starting an extrusion motor (302), enabling a driving extrusion roller (305) and a driven extrusion roller (306) to rotate in opposite directions, simultaneously driving an extrusion driving belt wheel (308) on the driving extrusion roller (305) to drive a kneading driven belt wheel (205) to rotate, enabling a first kneading paddle (202) to rotate, driving a second kneading paddle (203) to rotate by the first kneading paddle (202), kneading and dispersing the modified high-wear-resistance carbon black in the soft rubber material, and kneading for 3-5h to obtain a reinforced rubber material;
step A4: controlling the extrusion motor (302) to reversely rotate, enabling the driving extrusion roller (305) and the driven extrusion roller (306) to rotate oppositely, extruding the reinforced rubber material in the kneading box body (201) to the lower part of the interior of the extrusion shell (304) through the driving extrusion roller (305) and the driven extrusion roller (306), enabling the reinforced rubber material to enter the discharge through hole (407) from the discharging groove (408), starting the discharge motor (402) to enable the discharge screw shaft (409) to rotate, pushing the reinforced rubber material in the discharge through hole (407) to the material distributing head (410) by the discharge screw shaft (409) to be extruded, and enabling the extruded material to fall out of the discharge frame (406) to obtain the composite rubber material.
4. The manufacturing method of a damper bushing for an automobile according to claim 3, characterized in that: the anti-aging agent is formed by mixing one or two of anti-aging agent RD and anti-aging agent 4010NA in any proportion.
5. The manufacturing method of a damper bushing for an automobile according to claim 3, characterized in that: the efficient dispersion mixing roll comprises a rack (1), a kneading part (2), an extruding part (3) and a discharging part (4), wherein the discharging part (4) is arranged at the top end of the rack (1), the extruding part (3) is positioned above the discharging part (4), and the kneading part (2) is positioned above the extruding part (3);
the discharging part (4) comprises a discharging speed reducer (401), a discharging motor (402), a base (403), a discharging frame (404), a supporting shaft cylinder (405), a discharging frame (406), a discharging screw shaft (409) and a distributing head (410), the bottom end of the base (403) is fixedly connected with the top end of the rack (1), a groove is formed in the center of the base (403), the discharging frame (404) is fixedly installed in the groove, a discharging through hole (407) is formed in the discharging frame (404), the discharging through hole (407) penetrates through two sides of the discharging frame (404), a discharging groove (408) is formed in the upper surface of the discharging frame (404), the discharging groove (408) is communicated with the discharging through hole (407), the supporting shaft cylinder (405) is fixedly installed on one side of the discharging frame (404), the supporting shaft cylinder (405) is communicated with one end of the discharging through hole (407), the discharging screw shaft (409) is installed in the supporting shaft cylinder (405), the one end and the support shaft section of thick bamboo (405) of ejection of compact screw shaft (409) rotate to be connected, the other end of ejection of compact screw shaft (409) rotates to be installed and divides stub bar (410), divide stub bar (410) installation to be fixed in the other end of ejection of compact through-hole (407), the opposite side of ejection of compact frame (406) installation to be fixed in ejection of compact frame (404), one side that ejection of compact frame (404) is close to support shaft section of thick bamboo (405) is equipped with ejection of compact speed reducer (401), the top fixed connection of the bottom of ejection of compact speed reducer (401) and frame (1), the top installation of ejection of compact speed reducer (401) is fixed with ejection of compact motor (402), the output of ejection of compact motor (402) and the input fixed connection of ejection of compact speed reducer (401), the output and ejection of compact screw shaft (409).
6. The manufacturing method of a damper bushing for an automobile according to claim 5, characterized in that: the extrusion part (3) comprises an extrusion speed reducer (301), an extrusion motor (302), a speed reducer fixing seat (303), an extrusion shell (304), a driving extrusion roller (305), a driven extrusion roller (306), an extrusion driving gear (307), an extrusion driven gear (309), an extrusion driving pulley (308) and an extrusion driven gear (309), the bottom end of the extrusion shell (304) is fixedly connected with a discharge frame (404), the interior of the extrusion shell (304) is communicated with a discharge chute (408), the driving extrusion roller (305) and the driven extrusion roller (306) are oppositely arranged inside the extrusion shell (304), two ends of the driving extrusion roller (305) and the driven extrusion roller (306) are rotatably connected with the extrusion shell (304), one end of the driving extrusion roller (305) extends to the exterior of the extrusion shell (304) and is fixedly provided with the extrusion driving gear (307) and the extrusion driving pulley (308), the extrusion driving pulley (308) is positioned on one side of the extrusion driving gear (307) far away from the extrusion shell (304), one end of the driven extrusion roller (306) extends to the outside of the extrusion shell (304) and is fixedly provided with an extrusion driven gear (309), the extrusion driving gear (307) is meshed with the extrusion driven gear (309), one side of the driving extrusion roller (305) close to the extrusion driving belt wheel (308) is provided with an extrusion speed reducer (301), a speed reducer fixing seat (303) is fixedly arranged below the extrusion speed reducer (301), the bottom end of the speed reducer fixing seat (303) is fixedly connected with the top end of the frame (1), an extrusion motor (302) is fixedly arranged at the top end of the extrusion speed reducer (301), the output end of the extrusion motor (302) is fixedly connected with the input end of the extrusion speed reducer (301), the output end of the extrusion speed reducer (301) is fixedly connected with one end of the driving extrusion roller (305).
7. The manufacturing method of a damper bushing for an automobile according to claim 5, characterized in that: the kneading part (2) comprises a kneading box body (201), a first kneading paddle (202), a second kneading paddle (203), a kneading driving gear (204), a kneading driven pulley (205) and a kneading driven gear (206), the bottom end of the kneading box body (201) is fixedly connected with the top end of an extrusion shell (304), the interior of the kneading box body (201) is communicated with the interior of the extrusion shell (304), the first kneading paddle (202) and the second kneading paddle (203) are oppositely arranged in the kneading box body (201), one end of the first kneading paddle (202) is rotatably connected with the side wall of the kneading box body (201), the other end of the first kneading paddle (202) penetrates through the side wall of the kneading box body (201) and is fixedly provided with the kneading driving gear (204) and the kneading driven pulley (205), and the kneading driven pulley (205) is positioned on one side of the kneading driving gear (204) far away from the kneading box body (201), the kneading driven pulley (205) is in transmission connection with the extrusion driving pulley (308) through a belt, one end of the second kneading paddle (203) is in rotating connection with the side wall of the kneading box body (201), the other end of the second kneading paddle (203) penetrates through the side wall of the kneading box body (201) and is fixedly provided with a kneading driven gear (206), and the kneading driven gear (206) is meshed with the kneading driving gear (204).
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH692572A5 (en) * 1996-07-10 2002-08-15 Rutishauser Data Ag Wave, also Axis or roller body called.
JP2005001228A (en) * 2003-06-11 2005-01-06 Toyo Tire & Rubber Co Ltd Rubber continuous kneading equipment and rubber continuous kneading method
JP2005119241A (en) * 2003-10-20 2005-05-12 Toyoda Gosei Co Ltd Rubber molding method and rubber molding equipment
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