CN104002879B - Cover plate of spare tire of automobile and processing technique, process equipment - Google Patents

Cover plate of spare tire of automobile and processing technique, process equipment Download PDF

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Publication number
CN104002879B
CN104002879B CN201410226912.0A CN201410226912A CN104002879B CN 104002879 B CN104002879 B CN 104002879B CN 201410226912 A CN201410226912 A CN 201410226912A CN 104002879 B CN104002879 B CN 104002879B
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automobile
hard polyaminoester
cover plate
spare tire
fiber
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CN104002879A (en
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李东凯
张义
孙姗姗
邢倩倩
刘博�
薛凯
任洋洋
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Abstract

The invention discloses a kind of cover plate of spare tire of automobile and processing technique, process equipment, cover plate of spare tire of automobile therein is lamination layer structure along its thickness direction, including hard polyaminoester and the mixture layer of fiber of the high-pressure foam spray mo(u)lding as core, and high-pressure foam spray mo(u)lding is in first, second hard polyaminoester top layer of core both sides.The cover plate of spare tire of automobile of the present invention have employed thermosetting hard polyurethane material, ensure that the high temperature dimensional stability of product after molding;It addition, products made thereby lightweight, intensity height;The processing technique of the present invention ensures that product does not exist risk of delamination, it is achieved that product integration, products made thereby surfacing, does not haves and has fiber problem of leakage, and this technique is capable of low VOC emission, the discharge of harmful substance, riding environment in improving car in minimizing car;The process equipment automaticity of the present invention is high, can a people realize normally producing, and technique is simple, saves artificial, reduces processing cost.The product of the present invention is useful as the cover plate of spare tire of automobile of various automobile.

Description

Cover plate of spare tire of automobile and processing technique, process equipment
Technical field
The invention belongs to automobile inside plate field, relate to a kind of interior inner decorative panel of automobile trunk, specifically one Plant cover plate of spare tire of automobile and processing technique, process equipment.
Background technology
Cover plate of spare tire of automobile product is arranged in car trunk, is used for separating tyre-well and luggage case, play cover standby The effect of article in tire, driver's tool and carrying luggage case, apparent condition plays the effect of decoration luggage case.
Existing spare tire cover plate material selects mainly to have PP injection, PP cellular board, PP wood flour board (containing hollow blowing method), firmly Matter fibre boardes etc., wherein PP injection, PP cellular board material heat resistance are poor, and PP material softening temperature is 90-95 DEG C, under high temperature by force Degree performance reduces, and product can be caused simultaneously to deform upon, affect the performance of product size and load-bearing;PP wood flour board Material Strength, , easily there is freezing crack, broken problem in poor impact resistance;PP wood flour board, hard fibre panel material are solid construction, add The weight of product;Although and the product effect using PP wood flour board hollow blowing method to make has reached the intensity of requirement, but making The double increase of product weight.
The Chinese utility model patent of Patent No. 201220294908.4, discloses " a kind of sandwich structure automobile ground Plate ", it is made up of the sandwich of layers of sandwiched between positive and negative top layer and two top layers, sandwich of layers is by polyurethane foaming body and polyurethane The fiber reinforcement buried underground in foaming body is constituted, and fiber reinforcement is by fibre strip entity and fibre strip splitting object Clearance space is constituted;Positive and negative top layer is composite and fixed at glass base fabric and glass braiding in described sandwich of layers by melted On layer of cloth, melted compound fixing filling polyurethane layer is constituted.This floor is when manufacturing production, by relative for volume two glass woven cloth Interval is launched, and coats filling polyurethane layer in this two-layer glass woven cloth, to obtain positive and negative top layer;Meanwhile, at two-layer glass Between fine woven cloth, cast polyurethane foaming body in fiber reinforcement, and make polyurethane foaming body foam, to obtain sandwich of layers, Then subsequent processing operations is sent under the pressurize transmission effect prolonging pressure device in positive and negative top layer and sandwich of layers.This floor tough Property good, but this patent includes pre-buried skeleton, cast polyurethane foaming body, launches the operation such as glass-fiber-fabric, coating polyurethane, operation Many, complex operation, relatively costly.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of cover plate of spare tire of automobile, and it have employed bi-material and is fabricated to 3 Rotating fields, uses material category few, reduces the cost of product;Low VOC emission, can reduce the discharge of harmful substance in car, change Riding environment in kind car.
Another object of the present invention, is to provide the processing technique of a kind of above-mentioned cover plate of spare tire of automobile, and process is simple, joint Less manpower, automaticity is high;
It is a further object of the invention to provide the process equipment of a kind of above-mentioned cover plate of spare tire of automobile.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of cover plate of spare tire of automobile, along its thickness direction be three layers of one lamination layer structure, including as core The hard polyaminoester of high-pressure foam spray mo(u)lding and the mixture layer of fiber, and difference high-pressure foam spray mo(u)lding is in core two The hard polyaminoester top layer of side.
As limitation of the invention: described fiber is in glass fibre, flaxen fiber, staple fibre, synthetic fibers Kind, or the mixing of two kinds, or two or more mixing.
Present invention also offers the processing technique of the cover plate of spare tire of automobile of said structure, it enters according to following steps order OK:
1. hard polyaminoester high pressure foaming machine carries out vaporific spraying to lower mould, forms the first hard polyaminoester table Layer;
2. hard polyaminoester high pressure foaming machine carries out vaporific spraying to the first hard polyaminoester top layer, spreads while spraying Enter chopped strand silk, make hard polyaminoester mix infiltration with fiber, form the mixture layer of hard polyaminoester and fiber;
Hard polyaminoester mixes infiltration during spraying, spreading for all infiltrating or partial wetting with fiber, arrives first hard (final realization all infiltrations are by hard polyaminoester rising in course of reaction to realize all infiltrations after matter polyurethane skin layer Fibers encapsulation is infiltrated by journey);
3. hard polyaminoester high pressure foaming machine carries out the vaporific mixture layer spraying to hard polyaminoester and fiber, is formed Second hard polyaminoester top layer;
4. spray complete, compression molding, i.e. by moulding press driven mold matched moulds pressurize, after pressurize, take out workpiece, I.e. cover plate of spare tire of automobile.
Restriction as the present invention:
Described step middle hard polyaminoester material temperature is 22 28 DEG C.
Described step middle hard polyaminoester top layer grammes per square metre is 200 500g/m2
Described step 4. in, during compression molding, mold temperature is 90 110 DEG C.
Described step 4. in, moulding press pressure 200T, dwell pressure is 15 22MPa, and the dwell time is 75 95S.
Described step 2. in, the part by weight of hard polyaminoester and fiber is 1:1.1 1.4.
Present invention provides the process equipment of a kind of cover plate of spare tire of automobile, it includes two fibers under mastery routine control Cutting machine, high-pressure foam hard polyaminoester flush coater, mould, moulding press and die heater, wherein:
Two fibre cutting machines lay respectively at the both sides of high-pressure foam hard polyaminoester flush coater, and between three, warp can be by main journey Sequence controls the hitch of movement locus and connects firmly spray head and the cutting of two fibers for making high-pressure foam hard polyaminoester flush coater mutually The hard polyaminoester that between the outlet of machine, V-shaped distribution and the angle between spray head and outlet just make ejection and the fiber spread out All infiltrating or the spraying system of partial wetting before the lower mold arriving moulding press, fibre cutting machine, high-pressure foam hard are poly- The start and stop of urethane flush coater are respectively by mastery routine control;
Mould is independently arranged, and is placed in moulding press;
Moulding press is independently arranged, for driven mold die sinking, matched moulds under mastery routine control, and according to the pressure set Chien shih material pressurize in time is shaped to product;
Die heater is independently arranged, for being connected to the heated medium of mould by being heated oil pipe under mastery routine control Mould is heated to design temperature.
As the restriction of the present invention, the process equipment of described cover plate of spare tire of automobile also includes the machinery under mastery routine control Arm, described mechanical arm is for capturing hitch and driving it according to setting orbiting motion under mastery routine control.
Owing to have employed above-mentioned technical scheme, compared with prior art, acquired technological progress is the present invention:
(1) cover plate of spare tire of automobile provided by the present invention, body have employed thermosetting hard polyurethane material, protects after molding Demonstrate,prove product size at a temperature of-30 90 DEG C and, without significant change, there is high temperature dimensional stability;Spy is risen it addition, respond Property hard polyurethane material, use a small amount of material, the mold cavity space of full 5-10 times can be filled upon reaction completion, reduce The usage amount of material, reduces product weight, improves lightweight level;Environmental protection it is mixed with in hard polyurethane material Fiber, plays connection, the effect strengthened, product can carry the gravity of 80Kg do not rupture, indeformable, there is low cost, intensity High characteristic;
(2) three layers of composite bed article construction that the processing technique of the present invention is made up of bi-material, wherein go up layer with The middle common reaction bonded of mixed layer is for entirety rather than is individually carried out bonding compound by trilaminate material, eliminates multilayer material multiple The risk of delamination closed and occur, it is achieved that product integration.Its technical process is first to spray the first hard polyaminoester top layer, is formed One layer of hard protecting film, makes fibrous material will not pass through bottom;Secondly intermediate layer is that fiber is carried out with hard polyurethane material Mixed layer, carries out the vaporific spraying of hard polyurethane material while fiber is unrestrained, can glue and take hard polyurethane during unrestrained Ester material, carries out fiber infiltration, and finally when bottom fallen by fiber, fiber is covered by vaporific hard polyurethane material more completely Lid, therefore products made thereby surfacing, do not have and have fiber problem of leakage.It addition, this technique is capable of low VOC emission, The discharge of harmful substance, riding environment in improving car in minimizing car;
(3) the process equipment automaticity of the present invention is high, can a people realize normally producing, simple to operate, saves artificial, Reduce processing cost.
The product of the present invention is useful as the spare tire cover plate of various automobile.
The present invention is described in further detail with specific embodiment below in conjunction with Figure of description.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is mechanical arm 4 in the embodiment of the present invention 3, fibre cutting machine 51 and 52, high-pressure foam hard polyaminoester flush coater Spray head 6, the position relationship of hitch 7, connecting relation schematic diagram;
Fibre cutting machine 51,52 in Fig. 3 embodiment of the present invention 3, and the shower nozzle 6 of high-pressure foam hard polyaminoester flush coater Working state schematic representation when simultaneously working;
Rubber rolling 81,82 in fibre cutting machine 51,52 and the running roller 83 of band blade in Fig. 4 embodiment of the present invention 3 Position relationship schematic diagram.
In figure: 1 first hard polyaminoester top layer, 2 polyurethane and the mixture layer of fiber, 3 second hard gather Urethane top layer, 4 mechanical arms, 51,52 fibre cutting machines, the spray head of 6 high-pressure foam hard polyaminoester flush coaters, 7 Hitch, 81,82 rubber rollings, the running roller of 83 band blades, A fibre bundle, B leads fine pipe.
Detailed description of the invention
1 one kinds of cover plate of spare tire of automobile of embodiment
As it is shown in figure 1, the cover plate of spare tire of automobile of the present embodiment along its thickness direction be three layers of one lamination layer structure, Including hard polyaminoester and the mixture layer 2 of fiber of the high-pressure foam spray mo(u)lding as core, and high-pressure foam respectively Spray mo(u)lding is in 1, the second hard polyaminoester top layer 3, the first hard polyaminoester top layer of core both sides.Wherein,
Fiber is that glass fibre (can also is that flaxen fiber, staple fibre or synthetic fibers, it is also possible to be glass fibre, fiber crops Fiber, staple fibre, two or more mixed of synthetic fibers, the kind number of fiber to be regarded is equipped with accordingly The fibre cutting machine of quantity).
The processing technique of 21 27 1 kinds of cover plate of spare tire of automobile of embodiment
Embodiment 21 27 is respectively the processing technique of a kind of cover plate of spare tire of automobile, for the product of process embodiment 1.It Carry out according to following steps order respectively:
1. the hard polyaminoester high pressure foaming machine of 22 28 DEG C carries out the vaporific lower mould that sprays to, and forms the first hard Polyurethane skin layer 1, grammes per square metre is 200 500g/m2
2. the hard polyaminoester high pressure foaming machine of 22 28 DEG C carries out vaporific spraying to the first hard polyaminoester top layer 1, It is sprinkled into chopped strand silk while spraying, makes hard polyaminoester and fiber all infiltrate or partial wetting when spraying, arrive the (final realization all infiltrations are by hard polyaminoester rising in course of reaction in all infiltrations behind one hard polyaminoester top layer 1 Fibers encapsulation is infiltrated by process) and form the mixture layer 2 of hard polyaminoester and fiber, wherein hard polyaminoester and the weight of fiber Amount ratio is 1:1.1 1.4;
3. the hard polyaminoester high pressure foaming machine of 22 28 DEG C carries out vaporific spraying to the mixed of hard polyaminoester and fiber Compound layer 2, forms the second hard polyaminoester top layer 3, and grammes per square metre is 200 500g/m2
4. spray complete, compression molding, i.e. driven 90 110 DEG C of mould matched moulds pressurizes by moulding press, moulding press Pressure is 200T, and dwell pressure is 15 22MPa, and the dwell time is 75 95S;
Workpiece, i.e. cover plate of spare tire of automobile is taken out after pressurize.
In above-mentioned processing technique:
I, the temperature of raw material hard polyaminoester are 22 28 DEG C, response speed can reduce less than 22 DEG C, extend productive temp, Can react too fast by hard polyurethane material higher than 28 DEG C, complete with regard to the reaction of some material before material has not sprayed;
II, the grammes per square metre on the 1, second hard polyaminoester top layer 3, the first hard polyaminoester top layer are 200 500g/m2, can meet Surface quality and ensure overall light-weighted needs, the lower fiber that cannot effectively cover intermediate layer, higher can increase product Weight, affects product surface quality;
III, mold temperature set are 90 110 DEG C, it is therefore an objective to ensure rational productive temp and product quality, lower meeting Extend productive temp, then the fast reaction that high meeting causes PU to expect causes surface quality defect, such as problems such as scarce material, product holes.
Under IV, moulding press pressure 200T, dwell pressure is 15 22MPa, it is ensured that press can be to different-thickness Material carries out pressurize molding and cuts off border, lower meeting can not effectively control product surface quality, or occurs running material problem, higher Press load can be increased and cause the energy and equipment waste;
Under V, moulding press pressure 200T, the dwell time is the optimum that 75 95S can ensure product quality and productive temp, The lowest solidification can not be can reacted completely by product, higher man-hour can be wasted.
The process equipment of 3 one kinds of cover plate of spare tire of automobile of embodiment
The process equipment of the present embodiment is for the product of process embodiment 1, and its work process can realize embodiment 21 27 Technique.
The present embodiment includes that 4, two fibre cutting machines 51 and 52(of mechanical arm under mastery routine control are sprinkled into one or both Two are joined during fiber;If to be sprinkled into more kinds of fiber simultaneously, need be equipped with respective numbers fibre cutting machine), high Hair Fixer Bubble hard polyaminoester flush coater, mould, moulding press and die heater, wherein:
Two fibre cutting machines 51 and 52, as specific installation, have the bolt connecting external device (ED), freely adjustable peace The angle of dress.
Lay respectively at spray head 6 both sides of high-pressure foam hard polyaminoester flush coater to be 180 ° and be symmetrically installed, warp between three Can be connected firmly as spraying system by hitch 7 phase of mastery routine control movement locus.The spray of baroluminescence hard polyaminoester flush coater V-shaped distribution between the outlet of coating head 6 and two fibre cutting machines 51 and 52, as in figure 2 it is shown, and baroluminescence hard polyaminoester spray Angle between the spray head 6 of painting machine and outlet, the hard polyaminoester just making ejection arrives moulding press with the fiber spread out Lower mold before all infiltration or partial wetting, (final to realize all infiltrations is by hard polyaminoester in all infiltrations after arriving lower mold Fibers encapsulation is infiltrated by the process that rises in course of reaction), as shown in Figure 3.
High-pressure foam hard polyaminoester flush coater can regulate the material temperature scope to demand, it is possible to according to the use set Material carries out telling material, and is sprayed into vaporific.
Fibre cutting machine 51 and 52, hard polyaminoester flush coater start and stop respectively by mastery routine control.Fibre cutting machine 51 With 52 respectively by two rubber rollings 81 and 82, and the running roller 83 of a band blade is constituted, as shown in Figure 4.At band blade Driving motor is installed on running roller 83, the running roller 83 of band blade can be driven to rotate, and the running roller 83 of band blade turns to and two rubbers It is reverse between rubber roll wheel 81 and 82 turn to.With reference to Fig. 3, in fibre bundle A imports to fine pipe B under compressed air promotes, By lead fine pipe B under compressed air effect until apparatus for cutting fiber 51 or 52 only, fibre bundle A be placed in rubber rolling 1 with Compress between rubber rolling 2, it is ensured that fiber does not falls off after dicing;Fibre bundle A is by the running roller 83 of band blade and rubber rollers When taking turns 82, by the pressure between two running rollers, fibre bundle A is cut off by cutter.
Mould is independently arranged, and is placed in moulding press.
Moulding press is independently arranged, and for installation mold, press table meets the mould of product and installs, pressure >=200T. Driven mold die sinking, matched moulds under mastery routine control, and it is shaped to product according to the pressure timely chien shih material pressurize set.
Die heater is independently arranged, for being connected to the heated medium of mould by being heated oil pipe under mastery routine control Mould is heated to design temperature, and the pipe joint of die heater to be mated with the joint of mould.
Mechanical arm 4 is for capturing hitch 7 and driving it according to setting orbiting motion under mastery routine control.
The work process of the present embodiment is as follows:
I. fibre bundle A imports at fibre cutting machine 51 or 52;
Ii. mould is arranged on moulding press;
Iii. mould is connected to die heater, oil temperature machine design temperature by heating oil pipe, adds thermal medium and mould is heated;
Iv. moulding press is opened, driven mold die sinking;
V. mechanical arm carries high-pressure foam hard polyaminoester flush coater and fibre cutting machine 51 and 52 installs to reach pre-spraying Position;
Vi. at lower mould coated with hard polyurethane material, the first hard polyaminoester top layer 1 is formed;
Vii., after lower mould spraying, according to program setting, fibre cutting machine 51 and 52 is opened, and opens high pressure simultaneously Blown rigid polyurethane flush coater, sprays again according to the track set.By hard polyurethane material and short-fibre silk Carry out mixing infiltration, and be sprayed at above the first hard polyaminoester top layer 1 sprayed in advance.Quantity for spray spray as required It is coated with complete, forms the mixed layer 2 of hard polyaminoester and fiber;
Viii. close fibre cutting machine 51 and 52 according to program setting, continue on the mixed layer 2 of fiber at hard polyaminoester Continuous coated with hard polyurethane material, according to the track spraying set uniformly, forms the second hard polyaminoester top layer 3;
Ix. after spraying, mechanical arm carries high-pressure foam hard polyaminoester flush coater and fibre cutting machine 51 and 52 returns to Initial point;
X. matched moulds pressurize, according to set pressure and the dwell time, pressurize complete after die sinking pickup.

Claims (8)

1. a kind of processing technique of cover plate of spare tire of automobile, described cover plate of spare tire of automobile along its thickness direction be three layers of one answer Sheet combination structure, including hard polyaminoester and the mixture layer of fiber of the high-pressure foam spray mo(u)lding as core, and high pressure The foamed and sprayed first, second hard polyaminoester top layer taking shape in core both sides;Described fiber is glass fibre, flaxen fiber, people Make the mixing of more than the one in fiber, synthetic fibers, two kinds, or three kinds, it is characterised in that: described processing technique is according to following Sequence of steps is carried out:
1. hard polyaminoester high pressure foaming machine carries out vaporific spraying to lower mould, forms the first hard polyaminoester top layer;
2. hard polyaminoester high pressure foaming machine carries out vaporific spraying to the first hard polyaminoester top layer, is sprinkled into short while spraying Cut cellosilk, make hard polyaminoester mix with fiber, infiltrate, form the mixture layer of hard polyaminoester and fiber;
3. hard polyaminoester high pressure foaming machine carries out the vaporific mixture layer spraying to hard polyaminoester and fiber, forms second Hard polyaminoester top layer;
4. spray complete, compression molding, i.e. by moulding press driven mold matched moulds pressurize, after pressurize, take out workpiece, i.e. vapour Car spare tire cover plate.
The processing technique of cover plate of spare tire of automobile the most according to claim 1, it is characterised in that: described step is 1., 2. or 3. In, hard polyaminoester material temperature is 22 28 DEG C.
The processing technique of cover plate of spare tire of automobile the most according to claim 1, it is characterised in that: described step 1. or 3. in, The grammes per square metre on first, second hard polyaminoester top layer is 200 500g/m2
The processing technique of cover plate of spare tire of automobile the most according to claim 1, it is characterised in that: described step 4. in, mold During molding, mold temperature is 90 110 DEG C.
The processing technique of cover plate of spare tire of automobile the most according to claim 1, it is characterised in that: described step 4. in, molding Press pressure 200T, dwell pressure is 15 22MPa, and the dwell time is 75 95S.
The processing technique of cover plate of spare tire of automobile the most according to claim 1, it is characterised in that: described step 2. in, hard Polyurethane is 1:1.1 1.4 with the part by weight of fiber.
7. a kind of process equipment of cover plate of spare tire of automobile, it is characterised in that: it realizes according to any one of claim 1-6 The carrier of the processing technique of cover plate of spare tire of automobile, this process equipment includes two fibre cutting machines, high pressure under mastery routine control Blown rigid polyurethane flush coater, mould, moulding press and die heater, wherein:
Two fibre cutting machines lay respectively at the both sides of high-pressure foam hard polyaminoester flush coater, and between three, warp can be by mastery routine control The hitch of movement locus processed connects firmly mutually as making the spray head of high-pressure foam hard polyaminoester flush coater and two fibre cutting machines The hard polyaminoester that between outlet, V-shaped distribution and the angle between spray head and outlet just make ejection arrives with the fiber spread out All infiltrate when reaching the lower mold of swaging machine or the spraying system of partial wetting, fibre cutting machine, high-pressure foam hard polyaminoester The start and stop of flush coater are respectively by mastery routine control;
Mould is independently arranged, and is placed in moulding press;
Moulding press is independently arranged, for driven mold die sinking, matched moulds under mastery routine control and timely according to the pressure set Chien shih material pressurize is shaped to product;
Die heater is independently arranged, for being connected to the heated medium of mould by mould by being heated oil pipe under mastery routine control Tool is heated to design temperature.
The process equipment of cover plate of spare tire of automobile the most according to claim 7, it is characterised in that: it also includes mastery routine control Under mechanical arm, described mechanical arm under mastery routine control capture hitch and drive its according to set orbiting motion.
CN201410226912.0A 2014-05-27 2014-05-27 Cover plate of spare tire of automobile and processing technique, process equipment Active CN104002879B (en)

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CN104385766B (en) * 2014-11-27 2016-10-05 长城汽车股份有限公司 A kind of cover plate of spare tire of automobile Wrapping apparatus
CN104842890A (en) * 2015-05-14 2015-08-19 北京汽车股份有限公司 Spare tire cover plate for vehicle and manufacturing method thereof
CN106476356A (en) * 2016-12-13 2017-03-08 长春博超汽车零部件股份有限公司 A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof
CN107719489A (en) * 2017-10-23 2018-02-23 无锡吉兴汽车部件有限公司 A kind of cover plate of spare tire of automobile with flanging and preparation method thereof

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CN201613860U (en) * 2009-12-24 2010-10-27 浙江吉利汽车研究院有限公司 Novel trim top cover of automobile
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CN201613860U (en) * 2009-12-24 2010-10-27 浙江吉利汽车研究院有限公司 Novel trim top cover of automobile
CN103443342A (en) * 2011-03-23 2013-12-11 欧拓管理公司 A moulded multilayer lining for heat and sound insulation

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