CN103085260B - Felt manufacturing technology - Google Patents
Felt manufacturing technology Download PDFInfo
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- CN103085260B CN103085260B CN201210369885.3A CN201210369885A CN103085260B CN 103085260 B CN103085260 B CN 103085260B CN 201210369885 A CN201210369885 A CN 201210369885A CN 103085260 B CN103085260 B CN 103085260B
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Abstract
The invention provides a felt manufacturing technology which comprises the following steps of: inputting uniformly mixed fibers into a fiber adsorption device, so that the fibers are attached to an adsorption die of the fiber adsorption device under the action of air flow to realize adsorption forming; transferring the adsorption-formed fibers into a steam die; performing steam forming on the adsorption-formed fibers in a steam die to obtain a felt semi-finished product of a fixed shape; and transferring the felt semi-finished product into a cooling die for cooling to obtain a felt finished product. By the felt manufacturing technology, the adsorption forming, the steam forming and the cooling forming replace the pressing forming manufacturing technology in the prior art, so that a phenomenon that the structure of the felt finished product is to dense and becomes hard because the felt finished product is pressed is avoided, and the felt finished product still keeps the relatively low density during adsorption forming; a sound absorption effect of the felt finished product is relatively outstanding; and furthermore, due to the relatively low hardness, the felt can be conveniently assembled on other parts, so that the assembling difficulty is reduced.
Description
Technical field
The present invention relates to technical field of automotive upholstery, more particularly, relate to a kind of felt manufacturing process.
Background technology
The NVH characteristic (the noise Noise of automobile, vibration Vibration and sound vibration roughness Harshness are referred to as the NVH characteristic of automobile) of automobile is the key factor weighing Automobile Design and workmanship.In the NVH part of automobile, the difference in thickness of some felt lement is comparatively large and performance requirement is higher, such as double-deck felt front wall thermal insulation barriers.
Double-deck felt front wall thermal insulation barriers generally comprises the structure on two sides of hard formation and soft formation, and its hard formation of technological requirement needs compact structure, and can play deadening, soft formation needs flexible porous, can absorb noise.In existing technique, double-deck felt front wall thermal insulation barriers is all adopt first fiber to be made sheet material, again compressing production technology after sheet material heating is carried out producing, the double-deck felt front wall thermal insulation barriers utilizing this kind of processing technology to obtain, different each position surface density of its thickness is all identical (as depicted in figs. 1 and 2, numerical value in Fig. 1 is thickness, in Fig. 2, numerical value is surface density), and the position fiber of its thinner thickness can be downtrodden stone, the deadening of hard formation can only be played in this position, and do not possess the sound absorption of soft formation, have a strong impact on the overall work effect of double-deck felt front wall thermal insulation barriers.In addition, because this thinner position hardness is relatively large, so carrying out in the process of assembling more difficult with miscellaneous part, increase assembly difficulty.
In sum, how providing a kind of felt manufacturing process, to solve the low problem of felt lement sound-absorbing effect, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of felt manufacturing process, solve the problem that felt lement sound-absorbing effect is low.
In order to achieve the above object, the invention provides following technical scheme:
A kind of felt manufacturing process, it comprises the following steps:
1) by the fiber input fiber absorber that mixes, the absorption mould making fiber be attached to fiber absorber under airflow function realizes adsorption forming;
2) by the fibre migration of adsorption forming in steam mold;
3) in described steam mold, steam molding is carried out to obtain the figurate felt semi-finished product of tool to the fiber of adsorption forming;
4) the described felt semi-finished product obtained are transferred in cooling die carry out cooling to obtain felt finished product.
Preferably, in above-mentioned felt manufacturing process, the force value of described air-flow is 3bar-6bar.
Preferably, in above-mentioned felt manufacturing process, the profile of described absorption mould is identical with the surface texture of described felt finished product, and has multiple diameter air vent all different with distribution density.
Preferably, in above-mentioned felt manufacturing process, the fiber of adsorption forming is transferred in described steam mold in the mode of vacuum suction by manipulator.
Preferably, in above-mentioned felt manufacturing process, the steam pressure that the fiber of adsorption forming carries out steam molding is 2.5bar-3.5bar, and molding time is 3s-10s.
Preferably, in above-mentioned felt manufacturing process, described steam mold is the aluminum dipping form that die cavity is identical with the structure of described felt finished product.
Preferably, in above-mentioned felt manufacturing process, described steam mold is casting mould, and its wall thickness is 25mm-35mm, and its outer surface is provided with thermal insulation board.
Preferably, in above-mentioned felt manufacturing process, the jet chimney of described steam mold is arranged in the wall body of described steam mold, and is communicated with the die cavity of described steam mold.
Preferably, in above-mentioned felt manufacturing process, the cool time of described felt semi-finished product in cooling die is 40s-70s.
In felt manufacturing process provided by the invention, first the fiber mixed is inputted in fiber absorber, fiber is made to be attached to adsorption forming on absorption mould by the airflow function in fiber absorber, then will high-temperature steam in the fibre migration of adsorption forming to steam mold, be utilized to carry out steam molding, make fibres bond and obtain felt semi-finished product, finally felt semi-finished product being placed in cooling die and carrying out cooling and obtain felt finished product.Felt manufacturing process provided by the invention, adsorption forming, steam molding and cooling and shaping is utilized to replace compressing manufacturing process of the prior art, felt finished product can not be suppressed and make structure too fine and close and hardening, lower density when it still remains adsorption forming, make the sound-absorbing effect of felt finished product more outstanding, and relatively soft hardness is also convenient to itself and other parts and is assembled, and reduces assembly difficulty.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The double-deck felt front wall thermal insulation barriers structural representation that Fig. 1 provides for prior art;
The schematic diagram of the double-deck felt front wall thermal insulation barriers each several part surface density that Fig. 2 provides for prior art;
The process chart of the felt manufacturing process that Fig. 3 provides for the embodiment of the present invention;
The equipment flowsheet of the felt manufacturing process that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 is the operating diagram of adsorbent equipment;
Fig. 6 is the schematic diagram of fiber in adsorbent equipment after adsorption forming.
In upper Fig. 1-Fig. 6:
Fiber 1, fiber absorber 2, absorption mould 3, steam mold 4, cooling die 5, manipulator 6.
Detailed description of the invention
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment for the present invention is described, but should be appreciated that these describe just in order to further illustrate the features and advantages of the present invention, instead of limiting to the claimed invention.
The invention provides a kind of felt manufacturing process, solve the problem that felt lement sound-absorbing effect is low.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 3 and Figure 4, the felt manufacturing process that the embodiment of the present invention provides, it comprises the following steps:
S101, the fiber 1 mixed to be inputted in fiber absorber 2, the absorption mould 3 making fiber 1 be attached to fiber absorber 2 under airflow function realizes adsorption forming;
S102, the fiber 1 of adsorption forming is transferred in steam mold 4;
S103, in steam mold 4, steam molding is carried out to obtain the figurate felt semi-finished product of tool to the fiber 1 of adsorption forming;
S104, the felt semi-finished product obtained are transferred in cooling die 5 and carry out cooling to obtain felt finished product.
In the felt manufacturing process that the present embodiment provides, first the fiber 1 mixed is inputted in fiber absorber 2, fiber 1 is made to be attached to adsorption forming on absorption mould 3 by the airflow function in fiber absorber 2, then being transferred in steam mold 4 by the fiber 1 of adsorption forming utilizes high-temperature steam to carry out steam molding, make fiber 1 bond and obtain felt semi-finished product, finally felt semi-finished product are placed in cooling die 5 and carry out cooling and obtain felt finished product.
The felt manufacturing process that the present embodiment provides, adsorption forming, steam molding and cooling and shaping is utilized to replace compressing manufacturing process of the prior art, felt finished product can not be suppressed and make structure too fine and close and hardening, lower density when it still remains adsorption forming, make the sound-absorbing effect of felt finished product more outstanding, and relatively soft hardness is also convenient to itself and other parts and is assembled, and reduces assembly difficulty.
In order to optimize technique scheme further, in the felt manufacturing process that the present embodiment provides, the force value of air-flow is 3bar-6bar.Fiber 1 is blown on absorption mould 3 by the effect of fiber absorber 2 under the effect of air-flow, to make its adsorption forming, and the requirement that in fiber absorber 2, the force value of air-flow will meet fiber 1 to be blown on absorption mould 3, and make its adsorption forming, in the present embodiment, the preferred 3bar-6bar of force value of air-flow, it also can for meeting other numerical value of job requirement certainly.
Concrete, the profile of absorption mould 3 is identical with the surface texture of felt finished product, and has multiple diameter air vent all different with distribution density, as shown in Figure 5 and Figure 6.Fiber 1 blows to after on absorption mould 3 by air-flow, due to the continuous action of air-flow, fiber 1 can be assembled and finally form the type body identical with absorption mould 3 moulding surface structure on absorption mould 3, therefore just need to make the moulding surface structure of absorption mould 3 identical with the structure of felt finished product, make fiber 1 shape of adsorption forming identical with felt finished product and without the need to changing its shape again, all the time can maintain its soft completed state, be convenient to follow-up process operation.
On absorption mould 3, the effect of air vent is that air feed flows through absorption mould 3, and will be attached on absorption mould 3 with the fiber 1 that air-flow together flows, at air-flow by adsorbing in the process of mould 3, air-flow can first by being attached to the fiber 1 on mould, therefore under the effect of stream pressure, fiber 1 can be adsorbed on absorption mould 3 firmly, and the air vent density of adsorbing different parts on mould 3 is different, because fiber 1 thickness of adsorption forming is different, air-flow is when by absorption mould 3, air-flow is being provided with the position high adsorption capacity of a fairly large number of air vent, the larger fiber of thickness 1 can be adsorbed, the fiber 1 of thickness smaller part position is then without the need to too large absorption affinity, therefore the air vent quantity of its correspondence is relatively less.
As shown in Figure 4, the fiber 1 of adsorption forming is transferred in steam mold 4 in the mode of vacuum suction by manipulator 6.Adopt manipulator 6 to carry out transfer operation and can not only improve automaticity and transfer precision, increase work efficiency, the probability fiber 1 of adsorption forming being caused to damage can also be reduced.Because the fiber of adsorption forming 1 is comparatively soft, it only relies on the pressure of air-flow and shaping, so be very easy to damaged, therefore need to carry out careful transfer operation to the fiber 1 of adsorption forming, and the safety guarantee of mechanized operation is obviously greater than manual operation, so the present embodiment preferred mechanical hand 6 shifts the fiber 1 of adsorption forming.
Same, in transfer process, damage is caused to the fiber 1 of adsorption forming in order to reduce, the present embodiment adopts manipulator 6 to fix the fiber 1 of adsorption forming in the mode of vacuum suction, certainly, when meeting job requirement, the fiber 1 of adsorption forming can also adopt other mode to be fixed on manipulator 6.
In order to obtain the felt finished product of sound-absorbing effect the best, preferably, the steam pressure that the fiber 1 of adsorption forming carries out steam molding is 2.5bar-3.5bar, and molding time is 3s-10s.
Further, steam mold 4 is the aluminum dipping form that die cavity is identical with the structure of felt finished product.The fiber 1 of adsorption forming is being put into after in steam mold 4, is needing steam mold 4 to seal, then in the die cavity of steam mold 4, be filled with high-temperature steam, making fiber 1 bond under the effect of high-temperature steam and obtain felt semi-finished product.Therefore, in the process, in order to make the half-finished molding effect of felt better, avoid fiber 1 change structure under the impact of the unfavorable factors such as steam impringement of adsorption forming, so the cavity shape of steam mold 4 is set to identical with the structure of the fiber 1 of adsorption forming, to make the fiber 1 of adsorption forming fit completely with chamber wall, farthest reduce the impact of unfavorable factor, improve molding effect as much as possible.
The manufactured materials of steam mold 4 is selected aluminium to be comparatively light because of its material and is easy to processing, the realization that the felt manufacturing process that the present embodiment is provided can be more prone in actual production, is conducive to the promotion and application of the technical program in actual production process.
Steam mold 4 is casting mould, and its wall thickness is 25mm-35mm, and its outer surface is provided with thermal insulation board.Steam mold 4 adopts casting technique manufacture to form, and this kind of technique can make the upper die and lower die of steam mold 4 be respectively integrated formed structure, and not only its rigidity is higher, and sealing effectiveness is better, and steam molding effect is improved further.Wall thickness is 25mm-35mm is preferred value scope, and thermal insulation board can insulation further, further improves steam molding effect.
Jet chimney is arranged in the wall body of steam mold 4, and is communicated with the die cavity of steam mold 4.Because steam mold 4 adopts casting technique manufacture to form, so the jet chimney for vapor flow directly can be arranged in the process of casting, with simplified manufacturing technique in wall body.
Preferably, the cool time of felt semi-finished product in cooling die 5 is 40s-70s.This number range is a preferred value, and when cool time maintains within the scope of this, cooling effect is better, and the felt finished product sound-absorbing effect obtained is better.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a felt manufacturing process, is characterized in that, comprises the following steps:
1) inputted in fiber absorber (2) by the fiber (1) mixed, the absorption mould (3) making fiber (1) be attached to fiber absorber (2) under airflow function above realizes adsorption forming;
2) fiber (1) of adsorption forming is transferred in steam mold (4);
3) in described steam mold (4), steam molding is carried out to obtain the figurate felt semi-finished product of tool to the fiber (1) of adsorption forming;
4) the described felt semi-finished product obtained are transferred in cooling die (5) carry out cooling to obtain felt finished product;
Wherein, the fiber of adsorption forming is transferred in described steam mold (4) in the mode of vacuum suction by manipulator (6).
2. felt manufacturing process according to claim 1, is characterized in that, the force value of described air-flow is 3bar-6bar.
3. felt manufacturing process according to claim 1, is characterized in that, the profile of described absorption mould (3) is identical with the surface texture of described felt finished product, and has multiple diameter air vent all different with distribution density.
4. felt manufacturing process according to claim 1, is characterized in that, the steam pressure that the fiber (1) of adsorption forming carries out steam molding is 2.5bar-3.5bar, and molding time is 3s-10s.
5. felt manufacturing process according to claim 1, is characterized in that, described steam mold (4) is the die cavity aluminum dipping form identical with the structure of described felt finished product.
6. felt manufacturing process according to claim 1 or 5, it is characterized in that, described steam mold (4) is casting mould, and its wall thickness is 25mm-35mm, and its outer surface is provided with thermal insulation board.
7. felt manufacturing process according to claim 6, is characterized in that, the jet chimney of described steam mold (4) is arranged in the wall body of described steam mold (4), and is communicated with the die cavity of described steam mold (4).
8. felt manufacturing process according to claim 1, is characterized in that, the cool time of described felt semi-finished product in cooling die (5) is 40s-70s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369885.3A CN103085260B (en) | 2012-09-27 | 2012-09-27 | Felt manufacturing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369885.3A CN103085260B (en) | 2012-09-27 | 2012-09-27 | Felt manufacturing technology |
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| CN103085260A CN103085260A (en) | 2013-05-08 |
| CN103085260B true CN103085260B (en) | 2015-06-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105835378A (en) * | 2016-05-09 | 2016-08-10 | 重庆佩尔哲汽车内饰系统有限公司 | Injection molding and steam forming technology for fibers of pore membranes |
| CN109610090A (en) * | 2018-12-07 | 2019-04-12 | 无锡吉兴汽车声学部件科技有限公司 | The production method of sound insulating pad under a kind of blanket car carpeting |
| CN113529268A (en) * | 2020-04-22 | 2021-10-22 | 合肥佩尔哲汽车内饰系统有限公司 | Production method of novel sound insulation felt sheet |
| CN113308804B (en) * | 2021-07-30 | 2021-11-09 | 徐州永泽新材料科技有限公司 | Felt production process and production equipment |
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| FR2873719B1 (en) * | 2004-07-30 | 2006-11-17 | Cera | METHOD OF MAKING A PREFINISHED VOLUME MASS MATTRESS IN TWO THERMOLIAGE STEPS |
| JP2011051566A (en) * | 2009-09-04 | 2011-03-17 | Kasai Kogyo Co Ltd | Sound-absorbing material for vehicle interior trim and method of manufacturing the same |
| CN102336025B (en) * | 2010-07-26 | 2014-06-25 | 上海新安汽车隔音毡有限公司 | Method for manufacturing filled formed sound insulation pad for automobile |
| CN102423945B (en) * | 2011-09-10 | 2014-03-19 | 无锡吉兴汽车部件有限公司 | Production technology of soft and hard layer sound insulating pad of automobile |
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