CN111503181A - Brake pad with cooling structure - Google Patents
Brake pad with cooling structure Download PDFInfo
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- CN111503181A CN111503181A CN202010313141.4A CN202010313141A CN111503181A CN 111503181 A CN111503181 A CN 111503181A CN 202010313141 A CN202010313141 A CN 202010313141A CN 111503181 A CN111503181 A CN 111503181A
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Compositions of linings; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/0006—Noise or vibration control
- F16D65/0018—Dynamic vibration dampers, e.g. mass-spring systems
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D2065/784—Features relating to cooling the coolant not being in direct contact with the braking surface
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D2065/788—Internal cooling channels
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D2069/0425—Attachment methods or devices
- F16D2069/045—Bonding
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
Abstract
The invention discloses a brake pad with a cooling structure, which comprises a friction material layer, a heat insulation layer and a back plate adhered to the heat insulation layer through an adhesive layer, wherein the friction material layer and the heat insulation layer are bonded through an adhesive, a heat conduction cavity and a cooling cavity are formed in the friction material layer through a hot-press forming die when injection hot-press forming is carried out on the interior of the friction material layer, and the heat conduction cavity and the cooling cavity are arranged in parallel up and down. This brake block with cooling structure, the effect that reaches rapid cooling that can be fine, realized pouring the heat conduction material through the inside at friction material, carry out the heat absorption conduction of large tracts of land, also realized simultaneously through adopting the injection coolant liquid reflux heat dissipation in friction material, reached and to have dispelled the heat fast and can guarantee the purpose that the brake block used for a long time again, strengthened the cooling effect greatly, prolonged the life of brake block to be favorable to the long-term normal use of brake block.
Description
Technical Field
The invention relates to the technical field of brake pads, in particular to a brake pad with a cooling structure.
Background
The brake pad is also called brake shoe, in the brake system of the automobile, the brake pad is the most key safety part, and the quality of all brake effects plays a decisive role, so the good brake pad is the protection spirit of people and automobiles.
The brake pad is generally composed of a steel plate, an adhesive heat insulation layer and a friction block, wherein the steel plate is coated to prevent rust, the coating process is performed by detecting the temperature distribution in the coating process by using an SMT-4 furnace temperature tracker to ensure the quality, the heat insulation layer is composed of a non-heat-transfer material and aims at heat insulation, the friction block is composed of a friction material and an adhesive, and the friction block is extruded on a brake disc or a brake drum to generate friction during braking, so that the aim of decelerating and braking a vehicle is fulfilled, and the friction block is gradually abraded due to the friction effect.
Present brake block is in order to guarantee the long-term use of brake block, mostly at the internally designed heat conduction post of brake block, derive the high temperature that brake block short time brake produced, or directly increase the heat conduction material in the friction material in situ of brake block, come to cool down the brake block, however, the heat dissipation method cooling effect of these is relatively poor, can only realize carrying out the heat absorption conduction to the brake block part, can not reach the effect of rapid cooling, can not realize through pouring the heat conduction material in friction material's inside, carry out the heat absorption conduction of large tracts of land, can not realize through adopting the cooling liquid of pouring into and flow back the heat dissipation in friction material, can not reach the purpose that can dispel the heat fast and can guarantee the long-term use of brake block, the life of brake block has been shortened, thereby it is very unfavorable to.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a brake pad with a cooling structure, which solves the problems that the existing cooling method has poor cooling effect, can only realize heat absorption and conduction on the local part of the brake pad, cannot achieve the effect of rapid cooling, cannot realize large-area heat absorption and conduction by filling a heat conduction material into a friction material, cannot realize reflux heat dissipation in the friction material by injecting cooling liquid, cannot achieve the purposes of rapid heat dissipation and long-term use of the brake pad, and shortens the service life of the brake pad.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a brake block with cooling structure, includes the backplate through viscose layer adhesion on friction material layer, insulating layer and the insulating layer, bond through the adhesive between friction material layer and the insulating layer, the inside of friction material layer forms heat conduction die cavity and cooling die cavity through the hot briquetting mould when carrying out injection moulding hot briquetting, and heat conduction die cavity and cooling die cavity are parallel arrangement from top to bottom, the inside of heat conduction die cavity is filled with heat conduction combined material.
The heat-conducting composite material comprises the following raw materials in parts by weight: 5-10 parts of graphene, 5-10 parts of carbon fiber, 5-10 parts of red copper powder, 5-10 parts of titanium powder, 5-10 parts of heat-conducting insulating elastic rubber, 20-30 parts of epoxy resin, 5-10 parts of copper fiber and 5-10 parts of thickening agent.
Preferably, the heat-conducting cavity is in an inverted T shape.
Preferably, the number of the cooling cavities is two, and the two cooling cavities are symmetrically distributed in the friction material layer.
Preferably, the top of insulating layer, viscose layer and backplate all seted up with the filling hole of heat conduction die cavity looks adaptation, and the inside tapping of filling hole has the screw thread.
Preferably, both sides of the top of the back plate are provided with positioning pin holes, and the back surface of the back plate is coated with a shockproof coating.
Preferably, the heat-conducting composite material comprises the following raw materials in parts by weight: 7 parts of graphene, 7 parts of carbon fiber, 7 parts of red copper powder, 7 parts of titanium powder, 7 parts of heat-conducting insulating elastic rubber, 25 parts of epoxy resin, 7 parts of copper fiber and 7 parts of thickening agent.
Preferably, the heat-conducting composite material comprises the following raw materials in parts by weight: 5 parts of graphene, 5 parts of carbon fiber, 5 parts of red copper powder, 5 parts of titanium gold powder, 5 parts of heat-conducting insulating elastic rubber, 30 parts of epoxy resin, 5 parts of copper fiber and 5 parts of thickening agent.
Preferably, the heat-conducting composite material comprises the following raw materials in parts by weight: 10 parts of graphene, 10 parts of carbon fiber, 10 parts of red copper powder, 10 parts of titanium powder, 10 parts of heat-conducting insulating elastic rubber, 20 parts of epoxy resin, 10 parts of copper fiber and 10 parts of thickening agent.
Preferably, the heat-conducting insulating elastic rubber is formed by mixing and sintering a silicon rubber substrate and boron nitride and alumina ceramic particles as fillers.
The invention also discloses a manufacturing method of the brake pad with the cooling structure, which specifically comprises the following steps:
s1, preparing the heat-conducting composite material: firstly, respectively weighing graphene, carbon fiber, red copper powder, titanium gold powder, heat-conducting insulating elastic rubber, epoxy resin, copper fiber and a thickening agent in required weight parts by using a batching device, sequentially pouring all the components after batching into a mixing and stirring device, and mixing for 1-2 hours under the conditions that the temperature is 80-100 ℃ and the rotating speed is 500-600r/min, thereby preparing the heat-conducting composite material;
s2, forming of the friction material layer: pouring a friction material prepared in advance before production into a hot-press forming die, pressurizing and keeping the temperature at 50-80 ℃ for 2-3min, then air-cooling to room temperature, and sequentially carrying out heat treatment and surface high-temperature treatment to obtain a friction material layer with a heat-conducting cavity and a cooling cavity inside;
s3, assembling: bonding the friction material layer obtained in the step S2 with a prefabricated heat insulation layer through a bonding agent, coating an adhesive layer on the back surface of the heat insulation layer to bond the back plate with the heat insulation layer, forming filling holes matched with the heat conduction cavity in the tops of the back plate, the adhesive layer and the heat insulation layer, and tapping threads on the filling holes;
s4, pouring the heat-conducting composite material: pouring the heat-conducting composite material prepared in the step S1 into the heat-conducting cavity through the pouring hole, stopping pouring when the liquid level reaches the position below the pouring hole of the cooling cavity, and then heating and drying at the temperature of 50-60 ℃ to condense the heat-conducting composite material in the heat-conducting cavity;
s5, assembling: and S4, coating a shockproof coating on the back plate of the brake pad after the filling is finished, assembling the brake pad into the brake mechanism after the shockproof coating is dried, screwing a liquid guide pipe of an external cooling system into the filling hole, and injecting cooling liquid into the cooling cavity to guide out the heat transferred by the heat-conducting composite material.
(III) advantageous effects
The invention provides a brake pad with a cooling structure. Compared with the prior art, the method has the following beneficial effects:
(1) this brake block with cooling structure, including friction material layer, the backplate through viscose layer adhesion on insulating layer and the insulating layer, bond through the adhesive between friction material layer and the insulating layer, the inside on friction material layer is when carrying out injection moulding hot briquetting, forms heat conduction die cavity and cooling die cavity through the hot briquetting mould, and heat conduction die cavity and cooling die cavity are parallel arrangement from top to bottom, and the heat conduction combined material has been filled in the inside of heat conduction die cavity, and heat conduction combined material's raw materials includes according to parts by weight: 5-10 parts of graphene, 5-10 parts of carbon fiber, 5-10 parts of red copper powder, 5-10 parts of titanium powder, 5-10 parts of heat-conducting insulating elastic rubber, 20-30 parts of epoxy resin, 5-10 parts of copper fiber and 5-10 parts of thickening agent.
(2) This brake block with cooling structure through the locating pin hole has all been seted up in the both sides at backplate top, can conveniently carry out the location assembly with brake block and brake mechanism, and the back coating through the backplate has shockproof coating, can reduce the vibration that the brake block produced when the brake to avoid the production of vibration noise, and prevent that strong vibration from leading to the brake block to change the condition emergence that the assembly is not hard up, thereby ensured the normal use of brake block.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a flow chart of the manufacturing method of the present invention.
In the figure, a friction material layer 1, a thermal insulation layer 2, an adhesive layer 3, a back plate 4, a heat conduction cavity 5, a cooling cavity 6, a heat conduction composite material 7, a filling hole 8, a thread 9, a positioning pin hole 10 and a shockproof coating 11 are arranged.
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.
Referring to fig. 1-3, the embodiment of the present invention provides three technical solutions: a brake pad with a cooling structure specifically comprises the following embodiments:
example 1
A brake pad with a cooling structure comprises a friction material layer 1, a heat-insulating layer 2 and a back plate 4 adhered to the heat-insulating layer 2 through an adhesive layer 3, wherein the friction material layer 1 and the heat-insulating layer 2 are bonded through an adhesive, a heat-conducting cavity 5 and a cooling cavity 6 are formed in the friction material layer 1 through a hot-press forming die when injection hot-press forming is carried out, the heat-conducting cavity 5 and the cooling cavity 6 are arranged in a vertical parallel mode, a heat-conducting composite material 7 is filled in the heat-conducting cavity 5, the heat-conducting cavity 5 is inverted T-shaped, the number of the cooling cavities 6 is two, the two cooling cavities 6 are symmetrically distributed in the friction material layer 1, filling holes 8 matched with the heat-conducting cavity 5 are formed in the tops of the heat-insulating layer 2, the adhesive layer 3 and the back plate 4, threads 9 are tapped in the interiors of the filling holes 8, positioning pin holes, and the back of the back plate 4 is coated with a vibration damping coating 11.
The heat-conducting composite material 7 comprises the following raw materials in parts by weight: 7 parts of graphene, 7 parts of carbon fiber, 7 parts of red copper powder, 7 parts of titanium powder, 7 parts of heat-conducting insulating elastic rubber, 25 parts of epoxy resin, 7 parts of copper fiber and 7 parts of thickening agent, wherein the heat-conducting insulating elastic rubber is prepared by mixing and sintering a silicon rubber substrate and boron nitride and alumina ceramic particles as fillers.
A manufacturing method of a brake pad with a cooling structure specifically comprises the following steps:
s1, preparing the heat-conducting composite material: firstly, respectively weighing graphene, carbon fiber, red copper powder, titanium gold powder, heat-conducting insulating elastic rubber, epoxy resin, copper fiber and a thickening agent in required weight parts by using a batching device, sequentially pouring all the components after batching into a mixing and stirring device, and mixing for 1-2 hours under the conditions that the temperature is 80-100 ℃ and the rotating speed is 500-600r/min, thereby preparing a heat-conducting composite material 7;
s2, forming of the friction material layer: pouring a friction material prepared in advance before production into a hot-press forming die, pressurizing and keeping the temperature at 50-80 ℃ for 2-3min, then air-cooling to room temperature, and sequentially carrying out heat treatment and surface high-temperature treatment to obtain a friction material layer 1 with a heat-conducting cavity 5 and a cooling cavity 6 inside;
s3, assembling: bonding the friction material layer 1 obtained in the step S2 with a prefabricated heat insulation layer 2 through a bonding agent, then coating an adhesive layer 3 on the back surface of the heat insulation layer 2 to bond the backboard 4 with the heat insulation layer 2, then forming a filling hole 8 matched with the heat conduction cavity 5 in the tops of the backboard 4, the adhesive layer 3 and the heat insulation layer 2, and tapping a thread 9 in the filling hole 8;
s4, pouring the heat-conducting composite material: pouring the heat-conducting composite material 7 prepared in the step S1 into the heat-conducting cavity 5 through the pouring hole 8, stopping pouring when the liquid level reaches the position below the pouring opening of the cooling cavity 6, and then heating and drying at the temperature of 50-60 ℃ to condense the heat-conducting composite material 7 in the heat-conducting cavity 5;
s5, assembling: after the filling is finished in step S4, the shockproof coating 11 is coated on the back plate 4 of the brake pad, after the shockproof coating 11 is dried, the brake pad can be assembled into the brake mechanism, and meanwhile, the liquid guide tube of the external cooling system is screwed into the filling hole 8, and the cooling liquid is injected into the cooling cavity 6, so as to guide out the heat transferred by the heat-conducting composite material 7.
Example 2
A brake pad with a cooling structure comprises a friction material layer 1, a heat-insulating layer 2 and a back plate 4 adhered to the heat-insulating layer 2 through an adhesive layer 3, wherein the friction material layer 1 and the heat-insulating layer 2 are bonded through an adhesive, a heat-conducting cavity 5 and a cooling cavity 6 are formed in the friction material layer 1 through a hot-press forming die when injection hot-press forming is carried out, the heat-conducting cavity 5 and the cooling cavity 6 are arranged in a vertical parallel mode, a heat-conducting composite material 7 is filled in the heat-conducting cavity 5, the heat-conducting cavity 5 is inverted T-shaped, the number of the cooling cavities 6 is two, the two cooling cavities 6 are symmetrically distributed in the friction material layer 1, filling holes 8 matched with the heat-conducting cavity 5 are formed in the tops of the heat-insulating layer 2, the adhesive layer 3 and the back plate 4, threads 9 are tapped in the interiors of the filling holes 8, positioning pin holes, and the back of the back plate 4 is coated with a vibration damping coating 11.
The heat-conducting composite material 7 comprises the following raw materials in parts by weight: 5 parts of graphene, 5 parts of carbon fiber, 5 parts of red copper powder, 5 parts of titanium gold powder, 5 parts of heat-conducting insulating elastic rubber, 30 parts of epoxy resin, 5 parts of copper fiber and 5 parts of thickening agent, wherein the heat-conducting insulating elastic rubber is prepared by mixing and sintering a silicon rubber substrate and boron nitride and alumina ceramic particles as fillers.
A manufacturing method of a brake pad with a cooling structure specifically comprises the following steps:
s1, preparing the heat-conducting composite material: firstly, respectively weighing graphene, carbon fiber, red copper powder, titanium gold powder, heat-conducting insulating elastic rubber, epoxy resin, copper fiber and a thickening agent in required weight parts by using a batching device, sequentially pouring all the components after batching into a mixing and stirring device, and mixing for 1-2 hours under the conditions that the temperature is 80-100 ℃ and the rotating speed is 500-600r/min, thereby preparing a heat-conducting composite material 7;
s2, forming of the friction material layer: pouring a friction material prepared in advance before production into a hot-press forming die, pressurizing and keeping the temperature at 50-80 ℃ for 2-3min, then air-cooling to room temperature, and sequentially carrying out heat treatment and surface high-temperature treatment to obtain a friction material layer 1 with a heat-conducting cavity 5 and a cooling cavity 6 inside;
s3, assembling: bonding the friction material layer 1 obtained in the step S2 with a prefabricated heat insulation layer 2 through a bonding agent, then coating an adhesive layer 3 on the back surface of the heat insulation layer 2 to bond the backboard 4 with the heat insulation layer 2, then forming a filling hole 8 matched with the heat conduction cavity 5 in the tops of the backboard 4, the adhesive layer 3 and the heat insulation layer 2, and tapping a thread 9 in the filling hole 8;
s4, pouring the heat-conducting composite material: pouring the heat-conducting composite material 7 prepared in the step S1 into the heat-conducting cavity 5 through the pouring hole 8, stopping pouring when the liquid level reaches the position below the pouring opening of the cooling cavity 6, and then heating and drying at the temperature of 50-60 ℃ to condense the heat-conducting composite material 7 in the heat-conducting cavity 5;
s5, assembling: after the filling is finished in step S4, the shockproof coating 11 is coated on the back plate 4 of the brake pad, after the shockproof coating 11 is dried, the brake pad can be assembled into the brake mechanism, and meanwhile, the liquid guide tube of the external cooling system is screwed into the filling hole 8, and the cooling liquid is injected into the cooling cavity 6, so as to guide out the heat transferred by the heat-conducting composite material 7.
Example 3
A brake pad with a cooling structure comprises a friction material layer 1, a heat-insulating layer 2 and a back plate 4 adhered to the heat-insulating layer 2 through an adhesive layer 3, wherein the friction material layer 1 and the heat-insulating layer 2 are bonded through an adhesive, a heat-conducting cavity 5 and a cooling cavity 6 are formed in the friction material layer 1 through a hot-press forming die when injection hot-press forming is carried out, the heat-conducting cavity 5 and the cooling cavity 6 are arranged in a vertical parallel mode, a heat-conducting composite material 7 is filled in the heat-conducting cavity 5, the heat-conducting cavity 5 is inverted T-shaped, the number of the cooling cavities 6 is two, the two cooling cavities 6 are symmetrically distributed in the friction material layer 1, filling holes 8 matched with the heat-conducting cavity 5 are formed in the tops of the heat-insulating layer 2, the adhesive layer 3 and the back plate 4, threads 9 are tapped in the interiors of the filling holes 8, positioning pin holes, and the back of the back plate 4 is coated with a vibration damping coating 11.
The heat-conducting composite material 7 comprises the following raw materials in parts by weight: 10 parts of graphene, 10 parts of carbon fiber, 10 parts of red copper powder, 10 parts of titanium powder, 10 parts of heat-conducting insulating elastic rubber, 20 parts of epoxy resin, 10 parts of copper fiber and 10 parts of thickening agent, wherein the heat-conducting insulating elastic rubber is prepared by mixing and sintering a silicon rubber substrate and boron nitride and alumina ceramic particles as fillers.
A manufacturing method of a brake pad with a cooling structure specifically comprises the following steps:
s1, preparing the heat-conducting composite material: firstly, respectively weighing graphene, carbon fiber, red copper powder, titanium gold powder, heat-conducting insulating elastic rubber, epoxy resin, copper fiber and a thickening agent in required weight parts by using a batching device, sequentially pouring all the components after batching into a mixing and stirring device, and mixing for 1-2 hours under the conditions that the temperature is 80-100 ℃ and the rotating speed is 500-600r/min, thereby preparing a heat-conducting composite material 7;
s2, forming of the friction material layer: pouring a friction material prepared in advance before production into a hot-press forming die, pressurizing and keeping the temperature at 50-80 ℃ for 2-3min, then air-cooling to room temperature, and sequentially carrying out heat treatment and surface high-temperature treatment to obtain a friction material layer 1 with a heat-conducting cavity 5 and a cooling cavity 6 inside;
s3, assembling: bonding the friction material layer 1 obtained in the step S2 with a prefabricated heat insulation layer 2 through a bonding agent, then coating an adhesive layer 3 on the back surface of the heat insulation layer 2 to bond the backboard 4 with the heat insulation layer 2, then forming a filling hole 8 matched with the heat conduction cavity 5 in the tops of the backboard 4, the adhesive layer 3 and the heat insulation layer 2, and tapping a thread 9 in the filling hole 8;
s4, pouring the heat-conducting composite material: pouring the heat-conducting composite material 7 prepared in the step S1 into the heat-conducting cavity 5 through the pouring hole 8, stopping pouring when the liquid level reaches the position below the pouring opening of the cooling cavity 6, and then heating and drying at the temperature of 50-60 ℃ to condense the heat-conducting composite material 7 in the heat-conducting cavity 5;
s5, assembling: after the filling is finished in step S4, the shockproof coating 11 is coated on the back plate 4 of the brake pad, after the shockproof coating 11 is dried, the brake pad can be assembled into the brake mechanism, and meanwhile, the liquid guide tube of the external cooling system is screwed into the filling hole 8, and the cooling liquid is injected into the cooling cavity 6, so as to guide out the heat transferred by the heat-conducting composite material 7.
In conclusion, the brake pad can well achieve the effect of rapid cooling, realizes large-area heat absorption and conduction by filling the heat conduction material in the friction material, and simultaneously realizes the purpose of rapid heat dissipation and long-term use of the brake pad by injecting cooling liquid to perform backflow heat dissipation in the friction material, thereby greatly enhancing the cooling effect, prolonging the service life of the brake pad and being beneficial to long-term normal use of the brake pad.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a brake block with cooling structure, includes backplate (4) of viscose layer (3) adhesion on friction material layer (1), insulating layer (2) and insulating layer (2), bond its characterized in that through the adhesive between friction material layer (1) and insulating layer (2): when the friction material layer (1) is subjected to injection molding and hot-press molding, a heat-conducting cavity (5) and a cooling cavity (6) are formed through a hot-press molding die, the heat-conducting cavity (5) and the cooling cavity (6) are arranged in parallel up and down, and a heat-conducting composite material (7) is poured into the heat-conducting cavity (5);
the heat-conducting composite material (7) comprises the following raw materials in parts by weight: 5-10 parts of graphene, 5-10 parts of carbon fiber, 5-10 parts of red copper powder, 5-10 parts of titanium powder, 5-10 parts of heat-conducting insulating elastic rubber, 20-30 parts of epoxy resin, 5-10 parts of copper fiber and 5-10 parts of thickening agent.
2. The brake pad with the cooling structure as claimed in claim 1, wherein: the heat conduction cavity (5) is in an inverted T shape.
3. The brake pad with the cooling structure as claimed in claim 1, wherein: the number of the cooling cavities (6) is two, and the two cooling cavities (6) are symmetrically distributed in the friction material layer (1).
4. The brake pad with the cooling structure as claimed in claim 1, wherein: the top of insulating layer (2), viscose layer (3) and backplate (4) all seted up with heat conduction die cavity (5) looks adaptation pour into hole (8), and the inside tapping of pouring into hole (8) has screw thread (9).
5. The brake pad with the cooling structure as claimed in claim 1, wherein: positioning pin holes (10) are formed in the two sides of the top of the back plate (4), and a shockproof coating (11) is coated on the back of the back plate (4).
6. The brake pad with the cooling structure as claimed in claim 1, wherein: the heat-conducting composite material (7) comprises the following raw materials in parts by weight: 7 parts of graphene, 7 parts of carbon fiber, 7 parts of red copper powder, 7 parts of titanium powder, 7 parts of heat-conducting insulating elastic rubber, 25 parts of epoxy resin, 7 parts of copper fiber and 7 parts of thickening agent.
7. The brake pad with the cooling structure as claimed in claim 1, wherein: the heat-conducting composite material (7) comprises the following raw materials in parts by weight: 5 parts of graphene, 5 parts of carbon fiber, 5 parts of red copper powder, 5 parts of titanium gold powder, 5 parts of heat-conducting insulating elastic rubber, 30 parts of epoxy resin, 5 parts of copper fiber and 5 parts of thickening agent.
8. The brake pad with the cooling structure as claimed in claim 1, wherein: the heat-conducting composite material (7) comprises the following raw materials in parts by weight: 10 parts of graphene, 10 parts of carbon fiber, 10 parts of red copper powder, 10 parts of titanium powder, 10 parts of heat-conducting insulating elastic rubber, 20 parts of epoxy resin, 10 parts of copper fiber and 10 parts of thickening agent.
9. The brake pad with a cooling structure according to any one of claims 1 or 6 to 8, wherein: the heat-conducting insulating elastic rubber is formed by mixing and sintering a silicon rubber substrate and boron nitride and alumina ceramic particles as fillers.
10. A method for manufacturing a brake pad with a cooling structure according to any one of claims 1 to 8, wherein: the method specifically comprises the following steps:
s1, preparing the heat-conducting composite material: firstly, respectively weighing graphene, carbon fiber, red copper powder, titanium gold powder, heat-conducting insulating elastic rubber, epoxy resin, copper fiber and a thickening agent in required weight parts by using a batching device, sequentially pouring all the components after batching into a mixing and stirring device, and mixing for 1-2 hours under the conditions that the temperature is 80-100 ℃ and the rotating speed is 500-600r/min, thereby preparing a heat-conducting composite material (7);
s2, forming of the friction material layer: pouring a friction material prepared in advance before production into a hot-press forming die, pressurizing and keeping the temperature at 50-80 ℃ for 2-3min, then cooling the friction material to room temperature, and sequentially carrying out heat treatment and surface high-temperature treatment to obtain a friction material layer (1) with a heat-conducting cavity (5) and a cooling cavity (6) inside;
s3, assembling: bonding the friction material layer (1) obtained in the step S2 with a prefabricated heat insulation layer (2) through an adhesive, then coating an adhesive layer (3) on the back surface of the heat insulation layer (2) to bond the back plate (4) with the heat insulation layer (2), then forming filling holes (8) matched with the heat conduction cavity (5) in the top of the back plate (4), the adhesive layer (3) and the heat insulation layer (2), and tapping threads (9) in the filling holes (8);
s4, pouring the heat-conducting composite material: pouring the heat-conducting composite material (7) prepared in the step S1 into the heat-conducting cavity (5) through the pouring hole (8), stopping pouring when the liquid level reaches the position below the pouring opening of the cooling cavity (6), and then heating and drying under the condition that the temperature is 50-60 ℃ to condense the heat-conducting composite material (7) in the heat-conducting cavity (5);
s5, assembling: and S4, coating the shockproof coating (11) on the back plate (4) of the brake pad after the pouring is finished, assembling the brake pad into the brake mechanism after the shockproof coating (11) is dried, screwing the liquid guide pipe of the external cooling system into the pouring hole (8), and injecting cooling liquid back into the cooling cavity (6) to guide out the heat transferred by the heat-conducting composite material (7).
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|---|---|---|---|
| CN202010313141.4A CN111503181B (en) | 2020-04-20 | 2020-04-20 | Brake pad with cooling structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010313141.4A CN111503181B (en) | 2020-04-20 | 2020-04-20 | Brake pad with cooling structure |
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| CN111503181A true CN111503181A (en) | 2020-08-07 |
| CN111503181B CN111503181B (en) | 2022-01-14 |
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| CN206636959U (en) * | 2017-03-25 | 2017-11-14 | 象山沛公堂中药科技有限公司 | A kind of automobile brake sheet |
| CN206682198U (en) * | 2017-04-01 | 2017-11-28 | 象山沛公堂中药科技有限公司 | A kind of novel brake pad |
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| WO1999035415A1 (en) * | 1998-01-02 | 1999-07-15 | Nels Terry E | Friction lining mounted on friction ring |
| US20040140165A1 (en) * | 2003-01-17 | 2004-07-22 | Nghi Pham | Backing plate with friction material retention members and method and apparatus for manufacturing same |
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| CN111503181B (en) | 2022-01-14 |
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