CN106379251A - Engine bottom protecting plate and molding process thereof - Google Patents
Engine bottom protecting plate and molding process thereof Download PDFInfo
- Publication number
- CN106379251A CN106379251A CN201610769366.4A CN201610769366A CN106379251A CN 106379251 A CN106379251 A CN 106379251A CN 201610769366 A CN201610769366 A CN 201610769366A CN 106379251 A CN106379251 A CN 106379251A
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- China
- Prior art keywords
- installation portion
- guard plates
- engine bottom
- bottom guard
- installation
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- 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
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses an engine bottom protecting plate which is made from LFT-D. The bottom protecting plate comprises a protecting plate body, the edge of the protecting plate body protrudes upwards to form a mounting part, and the protecting plate body and the mounting part are integrally molded. The protecting plate body comprises a front part, a rear part opposite to the front part, a left side part and a right side part opposite to the left side part. The mounting part comprises a first mounting part body arranged on the front part, a second mounting part body arranged on the rear part, a third mounting part body arranged on the left side part, and a fourth mounting part body arranged on the right side part. The first mounting part body, the second mounting part body, the third mounting part body and the fourth mounting part body are each provided with positioning mounting holes. A cover plate is arranged on an operation opening and detachably connected with the protecting plate body. The engine bottom protecting plate is high in safety, stable in mounting, convenient to repair later and capable of effectively protecting an engine. The invention further discloses a molding process for preparing the engine bottom protecting plate through the LFT-D technology, and by means of the process, the manufacturing cost and the logistics cost are saved.
Description
Technical field
The present invention relates to auto parts and components field, more particularly, to a kind of engine bottom guard plates and its moulding process.
Background technology
With the cumulative year after year of auto output and sales volume, the automobile on road gets more and more.The situation on ground is complicated, is expert at
Cross journey kind and usually can run into the bad situation of road conditions, as uneven in road surface, the mud of hydrops road surface or rainy day splashing, sand
The foreign bodies such as gravel can be splashed into enging cabin so that electromotor in enging cabin, circuit and electronic equipment suffer erosion, therefore,
Partial automobile is mounted with that foot guard plate is protected.Foot guard plate protects the chassis of automobile, change speed gear box to a certain extent
With electromotor it may be said that engine bottom guard plates are the engine preventers determining body design according to various different automobile types.But it is traditional
Not enough below engine bottom guard plates generally existing：1) in the middle part of, sealing is not strong, is in particular in oil filter, engine oil valve position
Directly adopt big opening, the muddy water on road surface is easily splashed on electromotor；2) at positions such as oil filter, engine oil valves it is directly
With panel reality all-in-one-piece sealing structure, it is not easy to the maintenance in later stage；3) panel reality is relatively low with the bonding strength of vehicle, holds
Easily occur to loosen phenomenon.
Engine bottom guard plates mainly have three classes at present：Filled toughening polypropylene type, short glass fiber RPP class and long glass
Fiber reinforced polypropylene class.Filled toughening polypropylene type, toughness is preferable, but intensity is not so good as rear two classes, meets high temperature yielding.Short glass fiber
RPP poor toughness in low temperature, it is easy to crack that this bottom backplate winter runs into stone impact.Long glass fiber-reinforced polypropylene intensity
Higher, because Length of Glass Fiber is long, low-temperature flexibility is also preferable.Long glass fiber-reinforced polypropylene is divided into：GMT(Glass Mat
Reinforced Thermoplastics, glass fiber mat reinforced thermoplastic composite), LFT-D (Long-Fiber
Reinforce Thermoplastic Direct, long fiber reinforced thermoplastic composites are directly produced product online) and
LFT-G (Long-Fiber Reinforce Thermoplastic Granules, short glass fiber thermoplastic granulates material).LFT-D
The major advantage that technology is different from GMT and LFT-G is to omit semi-finished product step, saves manufacturing cost and logistics cost, notable fall
Low energy consumption, therefore market prospect are more preferable.
The engine bottom guard plates that enhancing thermoplastic composite online straight forming technique is made have advantages below：
1st, safety is good：A lot of vehicles have electromotor sinking function, that is, in violent head-on crash, in order to protect at present
The safety of shield driver and crew, electromotor can sink automatically, will not enter driver's cabin, thus retaining bigger existence for driver and crew
Space.Using thermoplastic composite bottom backplate automobile after head-on crash, electromotor sink when base-plate breaking, electromotor is just
Often sink, driver and crew obtain certain protection.But the automobile being mounted with electromotor steel plate bottom backplate is after head-on crash, greatly
Most electromotors can not successfully sink, but invades driver's cabin, damages to driver and crew.
2nd, lightweight：The density of long fiber reinforced thermoplastic composites is the 1/6 about of steel plate, using this composite wood
Expecting the bottom backplate made, can effectively mitigating vehicle body overall weight, thus reducing oil consumption.
3rd, long service life：Never-rusty, and because the resilient characteristic of thermoplastic composite is touched it is easier to absorb the external world
The energy hitting and impacting, anticollision power is better than steel plate.
4th, attractive in appearance：General steel are limited because producing, and product design dullness is stiff, lack change, and long fiber reinforcement thermoplastic
Property composite then because of its molding easily, the motility of appearance design is higher, can be applicable to various.
To sum up, a kind of engine bottom guard plates of use LFT-D technology of research and development preparation are so that this bottom backplate and vehicle installation are more steady
Determine, safety is preferable, be easy to later period maintenance and energy effective protection electromotor, it appears increasingly important.
Content of the invention
It is an object of the invention to overcoming the defect of prior art to propose a kind of engine bottom shield of use LFT-D technology preparation
Relatively stable, safety is preferable so that this bottom backplate and vehicle are installed for plate, be easy to later period maintenance and energy effective protection electromotor.
In order to solve above-mentioned technical problem, originally provide a kind of engine bottom guard plates, the material of described engine bottom guard plates
For LFT-D, described LFT-D material includes polymeric matrix material, additive and glass fibre, and described engine bottom guard plates include
Panel reality, described panel reality is provided with louvre and operation aperture it is characterised in that described panel reality edge to
On convex to form installation portion, described panel reality is integrally formed with described installation portion；Described panel reality include front portion with described
Anterior relative rear portion, left side and the right side relative with described left side；Described installation portion include being arranged on described before
The first installation portion in portion, the second installation portion being arranged on described rear portion, the 3rd installation portion being arranged on described left side
And it is arranged on the 4th installation portion on described right side；Described first installation portion, described second installation portion, described 3rd installation
Location and installation hole is provided with portion and described 4th installation portion, described location and installation hole is corresponding with the installing hole on vehicle；
It is provided with cover plate, described cover plate is detachably connected with described panel reality in described operation aperture.
Preferably, described polymeric matrix material is PP resin, and described additive is fire retardant, antioxidant, compatilizer
One or more of or lubricant.
Preferably, described first installation portion is provided with four described location and installation holes, described second installation portion is arranged
There are four described location and installation holes, described 3rd installation portion is provided with two described location and installation holes, described 4th installation portion
On be provided with three described location and installation holes, described location and installation in the hole is provided with positioner.
Further, described first installation portion is fixedly connected with vehicle forward mounting crossbeam by described positioner, described
Second installation portion is fixedly connected with vehicle radiator lower support device by described positioner, and described 3rd installation portion passes through
Fender bracket left front with vehicle and described vehicle radiator lower support device are fixedly connected described positioner respectively, institute
State the 4th installation portion to prop up with vehicle right wing support and described vehicle radiator bottom respectively by described positioner
Support arrangement is fixedly connected.
Preferably, described positioner is tapping screw, a diameter of 6mm of described tapping screw, and length is 16mm.
Further, described operation aperture be oil filter operation aperture, engine oil valve operation aperture, change speed gear box fuel tap behaviour
Make one or more of opening, radiator valve operation aperture.
Preferably, described cover plate is detachably connected on described panel reality by screw bolt and nut.
Preferably, the thickness of described panel reality is 2.5mm, the shape of described panel reality and the shape of engine pan
Match.
The invention also discloses a kind of moulding process of engine bottom guard plates, comprise the following steps,
S1, polymeric matrix material and additive are transported in gravimetric dosing unit, according to the machine of engine bottom guard plates
Tool performance carries out the mixture of material, raw material good for mixture is sent into and is melted in single order double screw extruder and plastify；
S2, glass fibre is preheated and is divided fine process；
S3, the product in the product in described step S1 and described step S2 is simultaneously fed into second order double screw extruder
In, form continuous material block after the two abundant mixture, and described continuous panel cutting is become block compound material embryo；
S4, the block compound material embryo in described step S3 is sent directly in the compacting tool set of engine bottom guard plates and solidifies
Molding, the demoulding；
S5, the product in step S4 is carried out post processing, obtain final product described engine bottom guard plates.
Preferably, the matrix material in described step S1 is PP resin, and described additive is fire retardant, antioxidant, phase
Hold one or more of agent or lubricant.
Further, the process of the molded curing molding in described step S4 is as follows：
S4-1, prepare the upper die and lower die of engine bottom guard plates according to the structure of engine bottom guard plates, on described mould and
Release agent spraying on the type face of described lower mould；
S4-2, fed intake in the material charging region of mould by described second order double screw extruder；
S4-3, the demoulding after pressurize certain time.
The engine bottom guard plates of the present invention and its moulding process, have the advantages that：
1st, the edge of the panel reality of the present invention raises up formation installation portion, before this installation portion is arranged on panel reality
The location and installation hole corresponding with vehicle installing hole, backplate are provided with portion, rear portion, left side and right side, and installation portion
Body is passed through tapping screw and location and installation hole and is installed with automobile, and installation strength is higher, reliable and stable.
2nd, first installation portion of the present invention is connected with vehicle forward mounting crossbeam by tapping screw, and the second installation portion passes through certainly
Attack screw to be connected with vehicle radiator lower support device, the 3rd installation portion is put the left front beater or beat-up with vehicle by tapping screw and propped up
Frame is fixedly connected with vehicle radiator lower support device, and the 4th installation portion passes through tapping screw and vehicle right wing support
And vehicle radiator lower support device is fixedly connected, further ensure that the mounting stability of panel reality and vehicle.
3rd, it is provided with cover plate in the operation aperture of the present invention, the muddy water being effectively prevented road surface is easily splashed into electromotor
On, protection electromotor is without damage；This cover plate and panel reality are detachably connected, and facilitate later period maintenance and maintenance.
4th, the engine bottom guard plates of the present invention are thermoplastic composite, and it passes through LFT-D technology straight forming, saves system
Cause this and logistics cost；Additionally, using the automobile of thermoplastic composite bottom backplate after head-on crash, when electromotor sinks
Base-plate breaking, electromotor normally sinks, and driver and crew obtain certain protection, and safety is preferable.
Brief description
In order to be illustrated more clearly that technical scheme, below will be to required in embodiment or description of the prior art
Use accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, right
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Its accompanying drawing.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is the attachment structure schematic diagram with vehicle for the engine bottom guard plates of the present invention；
Fig. 4 is C-C direction sectional view in Fig. 3；
Fig. 5 is D-D direction sectional view in Fig. 3
Fig. 6 is E-E direction sectional view in Fig. 3；
Fig. 7 is F-F direction sectional view in Fig. 3；
Fig. 8 is the moulding process flow process figure of the engine bottom guard plates of the present invention.
Wherein, in figure reference corresponds to：1- panel reality, 2- first installation portion, 3- second installation portion, 4- the 3rd pacifies
Dress portion, 5- the 4th installation portion, 6- location and installation hole, 7- positioner, 8- vehicle forward mounting crossbeam, 9- vehicle radiator bottom is propped up
Support arrangement, the left front fender bracket of 10- vehicle, 11- vehicle right wing support, 12- operation aperture.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in inventive embodiments is carried out clear, complete
Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Inventive embodiment, the every other reality that those of ordinary skill in the art are obtained on the premise of not making creative work
Apply example, broadly fall into the scope of protection of the invention.
Embodiment 1
As Figure 1-Figure 2, the invention discloses a kind of engine bottom guard plates, the material of described engine bottom guard plates is
LFT-D, described LFT-D material includes polymeric matrix material, additive and glass fibre, and described polymeric matrix material is PP
Resin, described additive is fire retardant and antioxidant, and this engine bottom guard plates includes panel reality 1, described panel reality 1
Thickness is 2.5mm, the shape of described panel reality 1 and the mating shapes of engine pan, the edge of described panel reality 1 to
On convex to form installation portion, described panel reality 1 and described installation portion are integrally formed.
Continue as Figure 1-Figure 2, described panel reality 1 include the front portion rear portion relative with described front portion, left side with
And the right side relative with described left side；Described installation portion includes being arranged on the first installation portion 2 on described front portion, is arranged on
The second installation portion 3 on described rear portion, the 3rd installation portion 4 being arranged on described left side and be arranged on described right side
The 4th installation portion 5；Described first installation portion 2 is provided with four location and installation holes 6, described second installation portion 3 is provided with four
Location and installation hole 6, described 3rd installation portion 4 are provided with two location and installation holes 6, are provided with three on described 4th installation portion 5
Location and installation hole 6, described location and installation hole 6 is corresponding with the installing hole on vehicle, is provided with positioning in described location and installation hole 6
Device 7.
As shown in figure 3, described first installation portion 2 is fixedly connected with vehicle forward mounting crossbeam 8 by described positioner 7,
Described second installation portion 3 is fixedly connected with vehicle radiator lower support device 9 by described positioner 7, be specifically with
The middle part of bottom radiator support meanss, is fixedly connected with the position of right side away from left side, and described 3rd installation portion 4 leads to
Cross described positioner 7 respectively with vehicle left front fender bracket 10 and vehicle radiator lower support device 9 left side
It is fixedly connected, described 4th installation portion 5 is dissipated with vehicle right wing support 11 and vehicle respectively by described positioner 7
The right side of hot device lower support device 9 is fixedly connected.
As Figure 4-Figure 7, described positioner 7 is tapping screw, a diameter of 6mm of described tapping screw, and length is
16mm.
Continue as shown in Figure 1-Figure 3, described panel reality 1 to be additionally provided with louvre and operation aperture 12, described radiating
At least one, hole, described operation aperture 12 includes oil filter operation aperture, engine oil valve operation aperture and change speed gear box fuel tap
Operation aperture, described operation aperture 12 is provided with cover plate, and described cover plate is detachably connected to described by screw bolt and nut
On panel reality 1.
During installation, the front (face corresponding with top view) of engine bottom guard plates is buckled in the lower surface of electromotor, connects
And install corresponding with the installing hole on vehicle for installation position, during maintenance, open cover plate and keeped in repair, after maintenance terminates,
Again cover plate is arranged in operation aperture, the present invention installs and stablizes, and electromotor can be protected without damage, facilitates the later stage to tie up again
Repair.
As shown in figure 8, the invention discloses a kind of moulding process of engine bottom guard plates, comprising the following steps：
S1, polymeric matrix material PP resin and additive (fire retardant and antioxidant) are transported to gravimetric dosing unit
In, the mechanical performance according to engine bottom guard plates carries out the mixture of material, and raw material good for mixture is sent into single order twin-screw extrusion
Melted in machine and plastified；
S2, glass fibre is preheated and is divided fine process；
S3, the product in the product in described step S1 and described step S2 is simultaneously fed into second order double screw extruder
In, form continuous material block after the two abundant mixture, and described continuous panel cutting is become block compound material embryo；
S4, the block compound material embryo in described step S3 is sent directly in the compacting tool set of engine bottom guard plates and solidifies
Molding, the demoulding；Detailed process is as follows：Prepare the upper die and lower die of engine bottom guard plates according to the structure of engine bottom guard plates,
Release agent spraying on the type face of described upper mould and described lower mould；Fed intake in the material charging region of mould by described second order double screw extruder；
The demoulding after pressurize certain time；
S5, the product in step S4 is carried out post processing, obtain final product described engine bottom guard plates.
Embodiment 2
As Figure 1-Figure 2, the invention discloses a kind of engine bottom guard plates, the material of described engine bottom guard plates is
LFT-D, described LFT-D material includes polymeric matrix material, additive and glass fibre, and described polymeric matrix material is PP
Resin, described additive is antioxidant, compatilizer and lubricant, and this engine bottom guard plates is made up of thermoplastic composite,
There is higher intensity and corrosion resistance.This engine bottom guard plates includes panel reality 1, and the thickness of described panel reality 1 is
2.5mm, the shape of described panel reality 1 and the mating shapes of engine pan, the edge of described panel reality 1 raises up
Form installation portion, described panel reality 1 and described installation portion are integrally formed.
Continue as Figure 1-Figure 2, described panel reality 1 include the front portion rear portion relative with described front portion, left side with
And the right side relative with described left side；Described installation portion includes being arranged on the first installation portion 2 on described front portion, is arranged on
The second installation portion 3 on described rear portion, the 3rd installation portion 4 being arranged on described left side and be arranged on described right side
The 4th installation portion 5；Described first installation portion 2 is provided with four location and installation holes 6, described second installation portion 3 is provided with four
Location and installation hole 6, described 3rd installation portion 4 are provided with two location and installation holes 6, are provided with three on described 4th installation portion 5
Location and installation hole 6, described location and installation hole 6 is corresponding with the installing hole on vehicle, is provided with positioning in described location and installation hole 6
Device 7.
As shown in figure 3, described first installation portion 2 is fixedly connected with vehicle forward mounting crossbeam 8 by described positioner 7,
Described second installation portion 3 is fixedly connected with vehicle radiator lower support device 9 by described positioner 7, be specifically with
The middle part of bottom radiator support meanss, is fixedly connected with the position of right side away from left side, and described 3rd installation portion 4 leads to
Cross described positioner 7 respectively with vehicle left front fender bracket 10 and vehicle radiator lower support device 9 left side
It is fixedly connected, described 4th installation portion 5 is dissipated with vehicle right wing support 11 and vehicle respectively by described positioner 7
The right side of hot device lower support device 9 is fixedly connected.
As Figure 4-Figure 7, described positioner 7 is tapping screw, a diameter of 6mm of described tapping screw, and length is
16mm.
Continue as shown in Figure 1-Figure 3, described panel reality 1 to be provided with operation aperture 12, described louvre is at least one
Individual, described operation aperture 12 includes oil filter operation aperture, engine oil valve operation aperture, change speed gear box fuel tap operation aperture and water
Case valve operation aperture, described operation aperture 12 is provided with cover plate, described cover plate is detachably connected to by screw bolt and nut
On described panel reality 1.
Louvre and reinforcement are also provided with described panel reality, described louvre at least, described plus
Strong muscle is at least one, for increasing the intensity of panel reality.
During installation, the front (face corresponding with top view) of engine bottom guard plates is buckled in the lower surface of electromotor, connects
And install corresponding with the installing hole on vehicle for installation position, during maintenance, open cover plate and keeped in repair, after maintenance terminates,
Again cover plate is arranged in operation aperture, the present invention installs and stablizes, and electromotor can be protected without damage, facilitates the later stage to tie up again
Repair.
As shown in figure 8, the invention discloses a kind of moulding process of engine bottom guard plates, comprising the following steps：
S1, polymeric matrix material PP resin and additive (antioxidant, compatilizer and lubricant) are transported to weight
In metering units, the mechanical performance according to engine bottom guard plates carries out the mixture of material, raw material good for mixture is sent into single order double
Melted in screw extruder and plastified；
S2, glass fibre is preheated and is divided fine process；
S3, the product in the product in described step S1 and described step S2 is simultaneously fed into second order double screw extruder
In, form continuous material block after the two abundant mixture, and described continuous panel cutting is become block compound material embryo；
S4, the block compound material embryo in described step S3 is sent directly in the compacting tool set of engine bottom guard plates and solidifies
Molding, the demoulding；Detailed process is as follows：Prepare the upper die and lower die of engine bottom guard plates, the type of mould and described lower mould on described
Release agent spraying on face；Fed intake in the material charging region of mould by described second order double screw extruder；The demoulding after pressurize certain time；
S5, the product in step S4 is carried out post processing, obtain final product described engine bottom guard plates.
The engine bottom guard plates of the present invention, have the advantages that：
1st, the edge of the panel reality of the present invention raises up formation installation portion, before this installation portion is arranged on panel reality
The location and installation hole corresponding with vehicle installing hole, backplate are provided with portion, rear portion, left side and right side, and installation portion
Body is passed through tapping screw and location and installation hole and is installed with automobile, and installation strength is higher, reliable and stable.
2nd, first installation portion of the present invention is connected with vehicle forward mounting crossbeam by tapping screw, and the second installation portion passes through certainly
Attack screw to be connected with vehicle radiator lower support device, the 3rd installation portion is put the left front beater or beat-up with vehicle by tapping screw and propped up
Frame is fixedly connected with vehicle radiator lower support device, and the 4th installation portion passes through tapping screw and vehicle right wing support
And vehicle radiator lower support device is fixedly connected, further ensure that the mounting stability of panel reality and vehicle.
3rd, it is provided with cover plate in the operation aperture of the present invention, the muddy water being effectively prevented road surface is easily splashed into electromotor
On, protection electromotor is without damage；This cover plate and panel reality are detachably connected, and facilitate later period maintenance and maintenance.
4th, the engine bottom guard plates of the present invention are thermoplastic composite, and it passes through LFT-D technology straight forming, saves system
Cause this and logistics cost；Using thermoplastic composite bottom backplate automobile after head-on crash, electromotor sink when base plate
Fracture, electromotor normally sinks, and driver and crew obtain certain protection, and safety is preferable.
Above disclosed be only the present invention several preferred embodiments, certainly can not with this to limit the present invention it
Interest field, the equivalent variations therefore made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (10)
1. a kind of engine bottom guard plates it is characterised in that described engine bottom guard plates material be LFT-D, described LFT-D material
Including polymeric matrix material, additive and glass fibre；
Described engine bottom guard plates include panel reality (1), and described panel reality (1) is provided with louvre and operation aperture
(12), the edge of described panel reality (1) raises up formation installation portion, and described panel reality (1) is passed through with described installation portion
Molded curing molding is integrally formed；
Described panel reality (1) includes the anterior rear portion relative with described front portion, left side and relative with described left side
Right side；Described installation portion includes the first installation portion (2) being arranged on described front portion, the second peace being arranged on described rear portion
Dress portion (3), the 3rd installation portion (4) being arranged on described left side and be arranged on the 4th installation portion on described right side
(5)；Described first installation portion (2), described second installation portion (3), described 3rd installation portion (4) and described 4th installation portion (5)
On be provided with location and installation hole (6), described location and installation hole (6) is corresponding with the installing hole on vehicle；
It is provided with cover plate, described cover plate is detachably connected with described panel reality (1) on described operation aperture (12).
2. engine bottom guard plates according to claim 1 it is characterised in that described polymeric matrix material be PP resin,
Described additive is one or more of fire retardant, antioxidant, compatilizer or lubricant.
3. engine bottom guard plates according to claim 1 and 2 are it is characterised in that be provided with described first installation portion (2)
Four described location and installation holes (6), described second installation portion (3) is provided with four described location and installation holes (6), and the described 3rd
Two described location and installation holes (6) are provided with installation portion (4), described 4th installation portion (5) is provided with three described positioning
Installing hole (6), is provided with positioner (7) in described location and installation hole (6).
4. engine bottom guard plates according to claim 3 are it is characterised in that described first installation portion (2) is by described fixed
Position device (7) is fixedly connected with vehicle forward mounting crossbeam (8), and described second installation portion (3) passes through described positioner (7) and car
Bottom radiator support meanss (9) are fixedly connected, described 3rd installation portion (4) pass through described positioner (7) respectively with car
Left front fender bracket (10) and described vehicle radiator lower support device (9) are fixedly connected, described 4th installation portion
(5) by described positioner (7) respectively with vehicle right wing support (11) and described vehicle radiator lower support
Device (9) is fixedly connected.
5. engine bottom guard plates according to claim 4 it is characterised in that described positioner (7) be tapping screw, institute
State a diameter of 6mm of tapping screw, length is 16mm.
6. the engine bottom guard plates according to claim 4 or 5 are it is characterised in that described operation aperture (12) is oil strainer
Clear one or more of device operation aperture, engine oil valve operation aperture, change speed gear box fuel tap operation aperture, radiator valve operation aperture.
7. engine bottom guard plates according to claim 6 are it is characterised in that described cover plate is detachable by screw bolt and nut
Be connected on described panel reality (1), the thickness of described panel reality (1) is 2.5mm, the shape of described panel reality (1)
Mating shapes with engine pan.
8. a kind of engine bottom guard plates moulding process is it is characterised in that comprise the following steps,
S1, polymeric matrix material and additive are transported in gravimetric dosing unit, according to the mechanicalness of engine bottom guard plates
The mixture of material can be carried out, raw material good for mixture is sent into and is melted in single order double screw extruder and plastify；
S2, glass fibre is preheated and is divided fine process；
S3, the product in the product in described step S1 and described step S2 is simultaneously fed in second order double screw extruder, two
Form continuous material block after the abundant mixture of person, and described continuous panel cutting is become block compound material embryo；
S4, the block compound material embryo in described step S3 is sent directly in the compacting tool set of engine bottom guard plates it is solidified into
Type, the demoulding；
S5, the product in step S4 is carried out post processing, obtain final product described engine bottom guard plates.
9. engine bottom guard plates moulding process according to claim 8 is it is characterised in that polymer in described step S1
Matrix material is PP resin, and described additive is one or more of fire retardant, antioxidant, compatilizer or lubricant.
10. engine bottom guard plates moulding process according to claim 8 or claim 9 is it is characterised in that mould in described step S4
The process of cured molding is as follows：
S4-1, prepare the upper die and lower die of engine bottom guard plates according to the structure of engine bottom guard plates, mould and described on described
Release agent spraying on the type face of lower mould；
S4-2, fed intake in the material charging region of mould by described second order double screw extruder；
S4-3, the demoulding after pressurize certain time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610769366.4A CN106379251A (en) | 2016-08-30 | 2016-08-30 | Engine bottom protecting plate and molding process thereof |
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| CN201610769366.4A CN106379251A (en) | 2016-08-30 | 2016-08-30 | Engine bottom protecting plate and molding process thereof |
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| CN106379251A true CN106379251A (en) | 2017-02-08 |
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| CN201610769366.4A Pending CN106379251A (en) | 2016-08-30 | 2016-08-30 | Engine bottom protecting plate and molding process thereof |
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| CN107323058A (en) * | 2017-07-25 | 2017-11-07 | 芜湖尚唯汽车饰件有限公司 | A kind of preparation technology of sound insulation and noise reduction automobile wheelhouse |
| CN108172713A (en) * | 2017-12-24 | 2018-06-15 | 奇瑞新能源汽车技术有限公司 | A kind of light-weight electric automobile battery system and preparation method thereof |
| CN109181093A (en) * | 2018-06-27 | 2019-01-11 | 中广核俊尔（上海）新材料有限公司 | A kind of anti-flaming polypropylene material and its preparation method and application |
| US20190100264A1 (en) * | 2017-10-02 | 2019-04-04 | Suzuki Motor Corporation | Fiber Reinforced Resin Material Plate-shaped Member |
| CN109648833A (en) * | 2019-02-21 | 2019-04-19 | 华彦汽车零部件(江苏)有限公司 | A kind of car armor plate Sheet Metal Forming Technology |
| WO2020119014A1 (en) * | 2018-12-10 | 2020-06-18 | 江苏华曼复合材料科技有限公司 | Vehicle underbody shield made from lft panel material and manufacturing method therefor |
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| CN109648833A (en) * | 2019-02-21 | 2019-04-19 | 华彦汽车零部件(江苏)有限公司 | A kind of car armor plate Sheet Metal Forming Technology |
| CN111483412A (en) * | 2020-04-15 | 2020-08-04 | 重庆弘骊祥科技有限公司 | Fixed protector of gasoline engine |
| CN111483412B (en) * | 2020-04-15 | 2023-08-11 | 重庆弘骊祥科技有限公司 | Fixed protector of petrol engine |
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Application publication date: 20170208 |
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