CN110587872A - Production process of novel shock absorber device - Google Patents

Production process of novel shock absorber device Download PDF

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Publication number
CN110587872A
CN110587872A CN201911020181.3A CN201911020181A CN110587872A CN 110587872 A CN110587872 A CN 110587872A CN 201911020181 A CN201911020181 A CN 201911020181A CN 110587872 A CN110587872 A CN 110587872A
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CN
China
Prior art keywords
inner core
plastic
shock absorber
plastic inner
absorber device
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CN201911020181.3A
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Chinese (zh)
Inventor
俞加帮
夏志华
曹阳
刘仟源
申武
任云强
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Jiangsu Saleen Automotive Technology Co Ltd
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Jiangsu Saleen Automotive Technology Co Ltd
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Priority to CN201911020181.3A priority Critical patent/CN110587872A/en
Publication of CN110587872A publication Critical patent/CN110587872A/en
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    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3842—Method of assembly, production or treatment; Mounting thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Vibration Dampers (AREA)

Abstract

The invention relates to a production process of a novel shock absorber device, which comprises the following steps: selecting 70-80% of polyhexamethylene diamine adipate and 20-30% of glass fiber for mixing, and drying by a vacuum dehumidifying dryer, wherein the water content of the mixed materials is 0.12-0.18%; B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating a plastic support and a plastic inner core on an extruder, and forming a support assembly by a plurality of cylinder sleeves and the plastic support in one step; C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165-175 ℃, and the vulcanization time is 30-40 min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized; D. and installing a limiting pad. The invention has the advantages of further improving the vibration reduction and the noise reduction of the shock absorber device, meeting the requirement of light-weight structure design and simplifying the whole process steps.

Description

Production process of novel shock absorber device
The technical field is as follows:
the invention belongs to the field of automobile shock absorption, and particularly relates to a production process of a novel shock absorber device.
Background art:
the shock absorber is a damping system arranged between a vehicle body and a bogie wheel, and has the functions of attenuating the vibration of the vehicle body and preventing the infinite increase of the amplitude of the vehicle body under the resonance condition, so that the vibration and the vibration frequency of the vibration of the vehicle body can be reduced, the noise is reduced, and how to improve the shock absorption and the noise reduction of the suspension shock absorber device is the subject of the discussion and research of the current automobile manufacturers.
For the combination of materials, when the characteristic acoustic impedance of the material is matched with the characteristic impedance of the flowing medium in which the sound wave propagates, most of the sound wave energy enters the material, and if the damping performance of the material is good, most of the sound energy or the vibration energy entering the material is converted into heat energy and dissipated, so that the improvement of the damping performance is one of the main ways of improving the sound insulation quantity of the material and reducing the vibration frequency, and the other way is that the characteristic impedance of the material is mismatched with the characteristic impedance of the flowing medium in which the sound wave propagates, and most of the sound wave and the vibration frequency enter the material and are blocked.
For the principle of vibration and noise reduction, the existing vibration damper device is composed of rubber and metal alloy, and patent No. 201610885983.0 discloses an engine suspension vibration damper, which comprises an outer magnesium alloy tube, an inner tube and a rubber layer arranged between the outer magnesium alloy tube and the inner tube, wherein the adopted vibration-damping magnesium alloy absorbs temporary supporting elements after adopting auxiliary elements, so that the micro crystals in the magnesium alloy can generate irregular micro defects, and vibration and noise generated by the engine can convert a large amount of energy into heat energy when passing through the magnesium alloy materialAnd the dissipation to reach vibration/noise reduction's effect, this patent has effectively solved traditional rubber damping device and can't eliminate the engine vibration source self vibration and the engine and transversely acutely during with higher speed stubborn illness. However, the damper device formed by combining the magnesium alloy and the rubber has the following defects in the comprehensive performance and the production process steps: the magnesium alloy outer tube is combined with the rubber body at a density of 1.9 g/cm due to the low density of the magnesium alloy32.7 g/cm in comparison with aluminum alloy3The sound wave and the vibration energy of the magnesium alloy have low propagation speed, but the weight reduction performance of the whole shock absorber device is poor, so that the light weight design of a vehicle cannot be met; most importantly, the steps in the process of producing the shock absorber device by adopting the magnesium alloy are more complicated, the magnesium alloy outer tube needs to be subjected to diameter shrinkage and then press mounting when the magnesium alloy outer tube and the rubber body are assembled, and the diameter shrinkage step is as follows: the surface of the magnesium alloy outer pipe is coated with anti-rust oil, the magnesium alloy outer pipe is placed into a shrinking device for reducing the diameter, the magnesium alloy outer pipe after reducing the diameter is bonded and pressed with a rubber body, the bonding stability is poor, the size precision of the magnesium alloy outer pipe is reduced by machining, defective products need to be detected and removed, and the whole shock absorber device is complex in process.
If a new material can be provided to replace the magnesium alloy outer tube, the production process of the novel shock absorber device can further improve the vibration reduction and the noise reduction of the shock absorber device, meet the requirement of structural lightweight design, simplify the whole process steps, and is a great progress for the automobile industry.
The invention content is as follows:
the invention aims to overcome the defects and provide a production process of a novel shock absorber device, so that the vibration reduction and the noise reduction of the shock absorber device are further improved, the structural lightweight design is met, and the overall process steps can be simplified.
The purpose of the invention is realized by the following technical scheme: a production process of a novel shock absorber device comprises a plastic support and a plastic inner core, wherein a rubber body is arranged between the plastic support and the plastic inner core, the rubber body is sleeved on the outer circumference of the plastic inner core, a plurality of steel sleeves are embedded on the plastic support, two limiting pads which are arranged one above the other are sleeved on the outer circumference of the plastic inner core, the two limiting pads are respectively and tightly attached to the upper end surface and the lower end surface of the plastic support, and the upper end and the lower end of the plastic inner core are respectively protruded out of the two limiting pads which are arranged up and down;
the method specifically comprises the following steps:
A. preparing materials: selecting 70-80% of polyhexamethylene diamine adipate and 20-30% of glass fiber for mixing, and drying by a vacuum dehumidifying dryer, wherein the water content of the mixed materials is 0.12-0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating and plasticizing the plastic support and the plastic inner core on an extruder, placing a plurality of cylinder sleeves in a mold when plasticizing the plastic support, and forming the cylinder sleeves and the plastic support into a support assembly at one step, wherein the heating temperature is 260-290 ℃, and the heating time is 20-30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165-175 ℃, and the vulcanization time is 30-40 min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
The invention is further improved in that: and step A, mixing 70-80% of polycaprolactam with 20-30% of glass fiber, and drying by using a vacuum dehumidifying dryer, wherein the water content of the mixed materials is 0.12-0.18%.
The invention is further improved in that: in the step A, 70-80% of polydecamethylenesebacamide is selected to be mixed with 20-30% of glass fiber, and the mixture is dried by a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.12-0.18%.
The invention is further improved in that: the upper end face and the lower end face of the plastic support are respectively provided with a plurality of grooves which are distributed in an equal-circumference arrangement mode, the plastic support is provided with a vertically-arranged mounting hole for embedding the rubber body, and the grooves are arranged on the outer side of the mounting hole in a surrounding mode.
The invention is further improved in that: the rubber body includes the circular arc portion of being connected with the inside wall of the mounting hole of plastic support and a plurality of rubber portions of being connected with circular arc portion, the central axis of a plurality of rubber portions sets up towards the center of mounting hole, and the rubber portion of arranging circular arc portion both sides in is connected with the cover body, the cover body is vertical to be set up and the internal portion of cover is arranged in to plastics inner core.
The invention is further improved in that: the outer side wall of the plastic inner core is tightly attached to the inner side wall of the sleeve body, and the plastic inner core is provided with a central through hole and a plurality of side through holes arranged around the central through hole.
The invention is further improved in that: the plastic inner core and the sleeve body are in a hexagonal columnar structure.
The invention is further improved in that: the limiting pad is of a fan-shaped structure, and a plurality of convex strips distributed at equal intervals are arranged on the side end face of the limiting pad.
The invention is further improved in that: the plastic bracket is provided with a plurality of groove bodies.
The invention is further improved in that: the cylinder sleeve is of an I-shaped structure.
Compared with the prior art, the invention has the following advantages:
1. the invention changes the combination form of the outer pipe bracket of the traditional magnesium alloy and the rubber body by combining the plastic and the rubber body, and the density of the plastic is 1.4 g/cm3The acoustic energy and the vibration energy enter the plastic to convert a large amount of energy into heat energy to be dissipated, the propagation speed of the acoustic energy and the vibration energy in the plastic is lower, therefore, the vibration reduction and noise reduction effects are better, and meanwhile, the poly hexamethylene diamine adipate is combined with the glass fiber, so that the weight of the whole shock absorber device is reduced, the light weight design advocated at present is realized to meet the requirements of energy conservation and emission reduction, the engine vibrates and transmits to the plastic inner core, the plastic inner core transmits to the rubber body, and finally transmits to the plastic support, the multilevel vibration reduction is realized, and the vibration reduction effect is excellent.
2. The process is simple and convenient, the plastic bracket and the plastic inner core are plasticized, the plastic bracket and the cylinder sleeve are integrally formed, and the cylinder sleeve is used for locally reinforcing the plastic bracket, so that the plastic bracket is prevented from deforming or cracking due to local stress; the support assembly, the plastic inner core and the rubber body are integrally vulcanized and formed, processes such as reducing, inspecting and press-fitting when the metal support and the rubber body are matched are omitted, and the comprehensive performance of the shock absorber device is improved due to the integrally vulcanized and formed structure.
Description of the drawings:
fig. 1 is a schematic structural view of the novel shock absorber device of the present invention.
Fig. 2 is a cross-sectional view of the novel shock absorber device of the present invention.
Fig. 3 is a disassembled view of the novel shock absorber device of the invention.
FIG. 4 is a schematic view of the structure of the rubber body of the present invention.
Reference numbers in the figures: 1-plastic support, 2-plastic inner core, 3-rubber body, 4-cylinder sleeve, 5-limiting pad, 6-groove, 7-mounting hole, 8-arc part, 9-rubber part, 10-central axis, 11-sleeve body, 12-central through hole, 13-side through hole, 14-convex strip and 15-groove body.
The specific implementation mode is as follows:
for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structure or unit indicated must have a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, an embodiment of a production process of a novel shock absorber device of the present invention is provided, the shock absorber device includes a plastic support 1 and a plastic inner core 2, a rubber body 3 is provided between the plastic support 1 and the plastic inner core 2, the rubber body 3 is sleeved on an outer circumference of the plastic inner core 2, a plurality of steel sleeves 4 are embedded on the plastic support 1, two limiting pads 5 arranged one above the other are sleeved on the outer circumference of the plastic inner core 2, the two limiting pads 5 are respectively tightly attached to upper and lower end surfaces of the plastic support 1, and upper and lower ends of the plastic inner core 2 are respectively protruded from the upper and lower end surfaces of the plastic inner core 5;
the method specifically comprises the following steps:
A. preparing materials: selecting 70-80% of polyhexamethylene diamine adipate and 20-30% of glass fiber for mixing, and drying by a vacuum dehumidifying dryer, wherein the water content of the mixed materials is 0.12-0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 260-290 ℃, and the heating time is 20-30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165-175 ℃, and the vulcanization time is 30-40 min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
All be equipped with the recess 6 that a plurality of equal circumferences arranged and distribute on the upper and lower terminal surface of plastic support 1, have the mounting hole 7 of the vertical setting of holding the embedding of rubber body 3 on the plastic support 1, a plurality of recesses 6 encircle the outside that sets up at mounting hole 7.
As shown in fig. 4, the rubber body 3 includes an arc portion 8 connected to the inner side wall of the mounting hole 7 of the plastic support 1 and a plurality of rubber portions 9 connected to the arc portion 8, the central axis 10 of the plurality of rubber portions 9 is arranged toward the center of the mounting hole 7, the rubber portions 9 arranged on both sides of the arc portion 8 are connected to a sleeve body 11, and the sleeve body 11 is vertically arranged and the plastic inner core 2 is arranged inside the sleeve body 11.
The invention changes the combination form of the outer pipe bracket of the traditional magnesium alloy and the rubber body by combining the plastic and the rubber body, and the density of the plastic is 1.2-1.4 g/cm3Sonic and vibrational energy intoA large amount of energy is converted into heat energy inside the plastic to be dissipated, the sound energy and the propagation speed of the vibration energy inside the plastic are lower, therefore, the vibration reduction effect is better, meanwhile, the polyhexamethylene diamine adipate is combined with the glass fiber, compared with metal alloy, the weight of the whole shock absorber device is reduced, the light weight design advocated at present is realized, the energy conservation and emission reduction are met, the vibration of an engine is transmitted to the plastic inner core, the plastic inner core is transmitted to the rubber body and finally transmitted to the plastic support, the multilevel vibration reduction is realized, and the vibration reduction effect is excellent. The process is simple and convenient, the plastic support 1 and the plastic inner core 2 are plasticized, the plastic support 1 and the cylinder sleeve 4 are integrally formed, and the cylinder sleeve 4 is used for locally reinforcing the structure of the plastic support 1, so that the plastic support 1 is prevented from deforming or cracking due to local stress; the support assembly, the plastic inner core 2 and the rubber body 3 are integrally vulcanized and formed, processes such as reducing, inspecting and press-fitting when the metal support and the rubber body are matched are omitted, and the comprehensive performance of the shock absorber device is improved due to the integrally vulcanized and formed structure.
Furthermore, the outer side wall of the plastic inner core 2 is tightly attached to the inner side wall of the sleeve body 11, the plastic inner core 2 is provided with a central through hole 12 and a plurality of side through holes 13 arranged around the central through hole 12, so that the weight is reduced, and the lightweight design is realized.
Furthermore, the plastic inner core 2 and the sleeve body 11 are in a hexagonal columnar structure, and the plastic inner core 2 and the sleeve body 11 are not easy to move in the vulcanization process due to the structural design, so that the plastic inner core and the sleeve body are in tight high connection.
Furthermore, the position-limiting pad 5 is a fan-shaped structure, and a plurality of convex strips 14 distributed at equal intervals are arranged on the side end surface of the position-limiting pad 5.
Furthermore, the plastic support 1 is provided with a plurality of groove bodies 15, so that the weight is reduced, and the lightweight design is realized.
Further, cylinder liner 4 is the I shape structure, and cylinder liner 4 receives the inside extrusion of plastic support 1, and cylinder liner 4 is higher with the integrated into one piece back stability of plastic support 1, and it is more firm to connect.
Example 1
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: selecting 70% of polyhexamethylene adipamide to be mixed with 30% of glass fiber, and drying the mixture by a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.12%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 260 ℃ and the heating time is 20 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165 ℃, and the vulcanization time is 30min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 2
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: mixing 80% of polyhexamethylene adipamide with 20% of glass fiber, and drying by a vacuum dehumidifying dryer to obtain a mixture with a water content of 0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 290 ℃ and the heating time is 30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 175 ℃, and the vulcanization time is 40min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 3
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: mixing 75% of polyhexamethylene adipamide with 25% of glass fiber, and drying with a vacuum dehumidifying dryer to obtain a mixture with a water content of 0.16%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mould when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 280 ℃ and the heating time is 25 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 170 ℃, and the vulcanization time is 35min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 4
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: step A, mixing polycaprolactam with the content of 70% with glass fiber with the content of 30%, and drying the mixture by using a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.12%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 260 ℃ and the heating time is 20 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165 ℃, and the vulcanization time is 30min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 5
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: step A, mixing 80% of polycaprolactam with 20% of glass fiber, and drying by using a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 290 ℃ and the heating time is 30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 175 ℃, and the vulcanization time is 40min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 6
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: step A, mixing polycaprolactam with the content of 75% with glass fiber with the content of 25%, and drying the mixture by using a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.16%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mould when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 280 ℃ and the heating time is 25 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 170 ℃, and the vulcanization time is 35min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 7
A production process of a novel shock absorber device specifically comprises the following steps:
A. preparing materials: step A, selecting 70% of polydecamethylene sebacamide to be mixed with 30% of glass fiber, and drying the mixture by a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.12%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 260 ℃ and the heating time is 20 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165 ℃, and the vulcanization time is 30min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 8
A. Preparing materials: step A, mixing 80% of polydecamethylenesebacamide with 20% of glass fiber, and drying the mixture by a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 290 ℃ and the heating time is 30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 175 ℃, and the vulcanization time is 40min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
Example 9
A. Preparing materials: step A, selecting 75% of polydecamethylene sebacamide and 20% -30% of glass fiber for mixing, and drying the mixture by a vacuum dehumidifying dryer, wherein the water content of the mixed materials is 0.12% -0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating the plastic support and the plastic inner core 2 on an extruder, placing a plurality of cylinder sleeves 4 in a mold when plasticizing the plastic support, and forming the cylinder sleeves 4 and the plastic support 1 into a support assembly at one step, wherein the heating temperature is 260-290 ℃, and the heating time is 20-30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165-175 ℃, and the vulcanization time is 30-40 min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
The damper devices obtained in examples 1 to 9 were inferior to those of comparative document No. 201610885983.0 in performance as shown in the following table:
as can be seen from examples 1 to 8, example 4 is the best embodiment, the tensile strength is 200Mpa, the bending strength is 190Mpa, and the notch impact strength is 10Mpa, which indicates that the optimal structural strength of the shock absorber device can be realized by using 70% of polycaprolactam and 30% of glass fiber in the shock absorber device, and the density of 1.36 is also an extremely low density value for the support of the existing shock absorber device, so that the low propagation speed of sound waves and vibration frequency in the plastic support is realized, and the good vibration reduction effect is realized; the highest thermal deformation temperature in example 4 indicates that the external structure of the damper device is resistant to high temperature and not easy to deform; the water absorption rate is as low as 0.8%, the lower the water absorption rate is, the higher the surface quality precision of the shock absorber device is, the weight is as low as 0.77kg, the lightweight degree is high, the vibration isolation decibel can be as high as 26.2db, the vibration isolation decibel is high, the sound reduction effect is good, the higher the modal frequency is, the stronger the resonance avoiding capability is, the good vibration isolation effect is, and the embodiment 4 can be seen from multiple items of data as the best implementation scheme.
Comparison of example 4 with the comparative document: the density of example 4 is lower than that of the document of patent No. 201610885983.0, which shows that the sound wave and the vibration frequency are lower in the propagation speed in the plastic bracket, and the better vibration-damping and sound-reducing effects are realized, and as can be seen from the comparison of tensile strength, bending strength and notch impact strength, the structural strength of the plastic bracket is not lower than that of the magnesium alloy outer tube, while the water absorption rate of example 4 is as low as 0.8%, which shows that the surface quality precision of the damper device made of 70% of polycaprolactam and 30% of glass fiber is higher than that of the damper device made of magnesium alloy; therefore, the advantages of light weight, vibration reduction and sound reduction in the embodiment 4 are obviously greater than those of the comparison document.
Other subject matter not disclosed in its entirety herein is common general knowledge to those skilled in the art. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The production process of the novel shock absorber device is characterized in that: the shock absorber device comprises a plastic support and a plastic inner core, wherein a rubber body is arranged between the plastic support and the plastic inner core, the rubber body is sleeved on the outer circumference of the plastic inner core, a plurality of steel sleeves are embedded on the plastic support, two limiting pads which are arranged up and down are sleeved on the outer circumference of the plastic inner core, the two limiting pads are respectively and closely arranged on the upper end surface and the lower end surface of the plastic support, and the upper end and the lower end of the plastic inner core are respectively protruded out of the two limiting pads which are arranged up and down;
the method specifically comprises the following steps:
A. preparing materials: selecting 70-80% of polyhexamethylene diamine adipate and 20-30% of glass fiber for mixing, and drying by a vacuum dehumidifying dryer, wherein the water content of the mixed materials is 0.12-0.18%;
B. plasticizing and forming the bracket assembly and the plastic inner core: b, selecting the mixture obtained in the step A, heating and plasticizing the plastic support and the plastic inner core on an extruder, placing a plurality of cylinder sleeves in a mold when plasticizing the plastic support, and forming the cylinder sleeves and the plastic support into a support assembly at one step, wherein the heating temperature is 260-290 ℃, and the heating time is 20-30 min;
C. integrally vulcanizing and assembling: adding sulfur into the adhesive, rolling and coating the adhesive on the inner wall of the bracket assembly and the outer wall of the plastic inner core, and sequentially sleeving, wherein the vulcanization temperature is 165-175 ℃, and the vulcanization time is 30-40 min, so that the integrated vulcanization molding of the bracket assembly, the plastic inner core and the rubber body is realized;
D. installing a limiting pad: and sequentially sleeving the two limiting pads on the upper side and the lower side of the plastic inner core.
2. The production process of the novel shock absorber device according to claim 1, wherein: and in the step A, 70-80% of polycaprolactam is selected and mixed with 20-30% of glass fiber, and the mixture is dried by a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.12-0.18%.
3. The production process of the novel shock absorber device according to claim 1, wherein: in the step A, 70-80% of polydecamethylenesebacamide is selected to be mixed with 20-30% of glass fiber, and the mixture is dried by a vacuum dehumidifying dryer, wherein the water content of the mixed material is 0.12-0.18%.
4. The production process of the novel shock absorber device according to claim 1, wherein: the upper end face and the lower end face of the plastic support are respectively provided with a plurality of grooves which are distributed in an equal-circumference arrangement mode, the plastic support is provided with a vertically-arranged mounting hole for embedding the rubber body, and the grooves are arranged on the outer side of the mounting hole in a surrounding mode.
5. The production process of the novel shock absorber device according to claim 1, wherein: the rubber body includes the circular arc portion of being connected with the inside wall of the mounting hole of plastic support and a plurality of rubber portions of being connected with circular arc portion, the central axis of a plurality of rubber portions sets up towards the center of mounting hole, and the rubber portion of arranging circular arc portion both sides in is connected with the cover body, the cover body is vertical to be set up and the internal portion of cover is arranged in to plastics inner core.
6. The production process of the novel shock absorber device according to claim 1, wherein: the outer side wall of the plastic inner core is tightly attached to the inner side wall of the sleeve body, and the plastic inner core is provided with a central through hole and a plurality of side through holes arranged around the central through hole.
7. The production process of the novel shock absorber device according to claim 6, wherein: the plastic inner core and the sleeve body are of a hexagonal columnar structure.
8. The production process of the novel shock absorber device according to claim 1, wherein: the limiting pad is of a fan-shaped structure, and a plurality of convex strips distributed at equal intervals are arranged on the side end face of the limiting pad.
9. The production process of the novel shock absorber device according to claim 1, wherein: the plastic bracket is provided with a plurality of groove bodies.
10. The production process of the novel shock absorber device according to claim 1, wherein: the cylinder sleeve is of an I-shaped structure.
CN201911020181.3A 2019-10-25 2019-10-25 Production process of novel shock absorber device Pending CN110587872A (en)

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Application publication date: 20191220