CN105034331B - PET felt filling block parts machining processes and heating frock - Google Patents
PET felt filling block parts machining processes and heating frock Download PDFInfo
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- CN105034331B CN105034331B CN201510401057.7A CN201510401057A CN105034331B CN 105034331 B CN105034331 B CN 105034331B CN 201510401057 A CN201510401057 A CN 201510401057A CN 105034331 B CN105034331 B CN 105034331B
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Abstract
The invention discloses a kind of PET felts filling block parts machining process, including：The heating-up temperature of heating frock is set, and to heating frock preheating；PET felts are placed on heater loading onto carries out local heating, and the local heating position of the PET felts is the relatively thin position of design thickness in PET felt filling block parts；PET felts after by local heating are transferred in molding shaving die and pressurize, and obtain PET felt filling block parts.Above-mentioned processing technique adopts local heating, the region of orientation heating is the relatively thin position of filling block part thickness, after orientation heating, the PET felts lower thickness of above-mentioned position and the thickness change in other regions is little, during using identical PET felt, the PET felt filling blocks part more thickness that the processing technique provided using the present invention is obtained has cause, and filling effect is also more preferable.The present invention also provides a kind of heating frock for above-mentioned processing technique, the orientation mode of heating for realizing above-mentioned processing technique using this heating frock, obtains the more preferable PET felts filling block part of filling effect.
Description
Technical field
The present invention relates to auto parts machinery processing technique field, more particularly to a kind of PET felts filling block parts machining process
With heating frock.
Background technology
It is understood that the vehicle body of automobile is mainly metal framework constituting, the local location inside these metal frameworks is present
Certain cavity, such as in the cavity of automobile tail.In order to lift the security performance and sealing property of body of a motor car, give birth in automobile
In producing line, it is a requisite link to fill these cavitys, by the filling to automobile tail cavity, has automobile tail
There is certain antihunt action, so as to improve the security performance of automobile；The filling of existing automobile tail cavity generally uses thermoplasticity PET
Felt (polyethylene terephthalate, polyethylene terephthalate) conduct is filled primarily with material.
By above-mentioned PET felt materials after thermoplastic shaping, the filling part for making definite shape and thickness is filled in therewith
In the filling cavity of mating shapes, the shape for filling cavity is not regular, therefore requires that the thickness for filling part is yet
Uneven.Existing thermoplastic shaping technique is：PET felt is integrally heated first by firing equipment, after then heat entirety
PET felts make filling part after extrusion forming.Because PET felts are heated easily shrink and expendable property, entirety adds
PET felt thickness after heat is thinning, in addition follow-up molding procedure, and integrally pressurized meeting is overall with mould for PET felt materials
Thinning again.So the filling part compressive deformation obtained using this processing mode is larger, the thicker local location of design thickness
Design thickness is not reached, that is to say, that the thickness difference of filling part does not reach design requirement, this causes filling part fill
Its filling effect is waved in distribution.
In sum, how producing the thickness of each local location, to be satisfied by the PET felts filling part of design requirement be this
Art personnel's problem demanding prompt solution.
Content of the invention
The invention provides a kind of PET felts filling block parts machining process and heating frock, to solve existing processing technique
The local thickness of obtained PET felts filling part cannot get the problem of design requirement.
The invention discloses following technical scheme：
A kind of PET felts filling block parts machining process, comprises the following steps：
The heating-up temperature of heating frock is set, and row preheating is put into the heater；
PET felts are placed on the heater loading onto carries out local heating, and wherein, the local heating position of the PET felts is
The relatively thin position of design thickness in PET felt filling block parts；
PET felts after by local heating are transferred in molding shaving die and pressurize, and obtain the PET felts filling block part.
Preferably, above-mentioned PET felts filling block parts machining process, also includes：
Cutting PET felts, and the PET felts for obtaining matching with the size of the heating frock and the molding shaving die.
Preferably, in above-mentioned PET felts filling block parts machining process, by local heating after PET felts be transferred to molding and cut
Pressurization in the mould of side, obtaining the PET felts filling block part includes：
Using fixture by local heating after PET felts be transferred in molding shaving die and pressurize, obtain PET felts filling
Block part.
Preferably, in above-mentioned PET felts filling block parts machining process, the local heating temperature is 180-200 DEG C, heating
Time is 70-120s.
Preferably, in above-mentioned PET felts filling block parts machining process, the moulding pressure be 15-20MPa, molding time
For 60-90s.
A kind of PET felts filling block heat parts frock, for above-mentioned PET felts filling block parts machining process in, described plus
Thermal technology's installing is equipped with local heating area, and the local heating area is used for being oriented heating to the PET felts.
Preferably, in above-mentioned PET felts filling block heat parts frock, the local heating area is used for entering the PET felts
Row orientation heating includes：The local heating area is used for relatively thin to design thickness in PET felt filling blocks obtained in the PET felts
Position is oriented heating.
From above-mentioned processing technique step, the processing technique of PET felts be different with existing technique, existing plus
Work technique uses the mode of overall heating.And the method for using local heating in the processing technique that the present invention is provided,
Namely orientation is heated, the method that other regions are not heated, and the region for orienting heating is thinner thickness after filling block part is obtained
Position, after orientation heating, the PET felts lower thickness of above-mentioned position and the thickness change in other regions less, are then passed through again
Pressurization, using moulding pressure so that the thickness of obtained each position of filling block is satisfied by design requirement, designs thicker position
Due to the not heated thickness that can recover PET felt raw materials completely.Through comparing discovery, when using identical PET felt, using this
The PET felt filling block part more thickness that the processing technique that invention is provided is obtained has cause, and after practice, filling effect is also more
Good.The present invention also provides a kind of heating frock for above-mentioned processing technique, realizes above-mentioned processing work using this heating frock
The orientation mode of heating of skill, obtains the more preferable PET felts filling block part of filling effect.
In sum, the present invention is provided PET felt filling block parts machining processes and heating frock, can solve the problem that existing adding
Obtained in work technique, the local thickness of PET felts filling part cannot get the problem of design requirement.
Specific embodiment
A kind of PET felts filling block parts machining process and heating frock that the present invention is provided, to solve existing processing technique
The local thickness of obtained PET felts filling part cannot get the problem of design requirement.
The processed raw material that the processing technique that the present invention is provided is suitable for is PET felts, is heated using which yielding after pressurization
Property, processing are obtained PET felt filling blocks, and the filling part as positions such as automobile tails is used.PET felts are PET material and hair
The mixture of felt, it is known that PET felts are a kind of elastomeric objects at normal temperatures, no matter pressurized much, once pressure is always removed
Pressurized front state can be returned to.But, in the case where being heated, the elastic performance of PET felts will be changed, this is because PET
After being heated, molecular chain structure changes, and can become flowable liquid, once pressurized, felt can be bonded together, even if
Distress resolves, felt and PET also will not be separated again, after temperature drop, the shape of PET felts will keep the shape of pressured state and
Cannot recover.The above-mentioned characteristic of PET felt exactly make use of, and which is processed into various filling block parts.
The PET felt filling block parts machining processes that the present invention is provided, comprise the following steps：
The heating-up temperature of heating frock is set, and row preheating is put into the heater.In actual production, in order to improve
Production efficiency, general using first will heating frock preheating, when the temperature of frock to be heated reaches a certain setting value, then by PET felts
The mode that heater loads onto heating is placed on, this is done so that the temperature of PET felts comparatively fast rises, from the surface of PET felts to inside
Rate of rise in temperature is more uniform consistent.With the situation contrast for heating PET felts and heating frock simultaneously, it is to avoid when heating simultaneously
Surface quick heating that PET felts and heater attaching are touched and internal heat up slow, cause surface overheated and occur to deform ahead of time larger,
The problem of pressurized processing cannot be continued.
Preferably, in above-mentioned PET felts filling block parts machining process, the local heating temperature is 180-200 DEG C, heating
Time is 70-120s.In actual production, the preheating temperature for heating frock can reach 180-200 degree Celsius, therefore by PET
Felt is placed on heater and loads onto the temperature of local heating also almost in this temperature range, and this temperature is according to PET felts
Crystallization temperature sets, and is also engaged with heat time heating time certainly.And heat time heating time is relevant with the thickness of PET felt raw materials.
After heating frock is preset, PET felts are placed on the heater loading onto carries out local heating, that is to say, that when
The thermal treatment zone of the size of PET felts more than above-mentioned heating frock.And, the local heating position of the PET felts is PET felt filling blocks
The relatively thin position of design thickness in part.Preferably, in above-mentioned PET felts filling block parts machining process, in above-mentioned local heating
Also include before step：Cutting PET felts, and obtain matching with the size of the heating frock and the molding shaving die
PET felts.It is understood that, although it is the mode of local heating, it appears that and the overall dimensions relation of PET felts is less, but will add
PET felts after heat are loaded onto from heater during being transferred in pressurizing mold, because the PET felts after heating are softer, if PET
If the size of felt raw material is again excessive, not only increases the difficulty of transfer but also be easier to cause PET felts local heating in transfer
The deformation of position, this may be unfavorable to follow-up molding procedure.And excessive PET felt raw materials are put into the pressurization of molding shaving die
When, it is easily caused raw material too extruding and deforms larger, is difficult the consequence of abundant resilience.Such consequence is provided with the present invention
The purpose of processing technique is runed counter to.
PET felt filling block parts are used as filling, and its size design is determined by the size of position to be filled, and filler
It is other that the size that puts must be that thickness has, and the thickness as the PET felts of raw material is really uniform, and it is understood that only plus
Heat and pressurization combine, and could cause the elasticity loss of PET felts and be molded certain thickness and shape.Therefore general employing
It is more than or equal to the PET felts of the size of most thick position in filling position as raw material, so only need to be in PET felt filling block parts
The relatively thin position heating of design thickness, and remaining position is not heated, like this, then through next step：By local heating
PET felts afterwards are transferred to pressurization in molding shaving die, obtain the PET felts filling block part.After pressure is removed, do not heat
Position will recover the thickness of PET felt raw materials, and the position of local heating can change with the shape of mould.In actual production
In, while molding, can also carry out trimming and perforation, trimming be exactly by the pressurized demoulding after the PET felts filling block zero for obtaining
The unnecessary PET felts of part surrounding cut away, and the purpose of perforation is to be processed into be available for assembling with other parts by PET felt filling block parts
Part.
Preferably, in above-mentioned PET felts filling block parts machining process, the moulding pressure be 15-20MPa, molding time
For 60-90s.
Preferably, in above-mentioned PET felts filling block parts machining process, by local heating after PET felts be transferred to molding and cut
Pressurization in the mould of side, obtaining the PET felts filling block part includes：
Using fixture by local heating after PET felts be transferred in molding shaving die and pressurize, obtain PET felts filling
Block part.The reason for do so, illustrates in the part of above-mentioned cutting PET felts that this does not repeat.
Through comparing discovery, when using identical PET felt, the PET felts that obtain of processing technique that provided using the present invention
Filling block part more thickness has cause, and after practice, filling effect is also more preferable.The present invention also provides a kind of for above-mentioned processing
The heating frock of technique, the orientation mode of heating for realizing above-mentioned processing technique using this heating frock, obtains filling effect more
Good PET felt filling block parts.
A kind of PET felts filling block heat parts frock, for above-mentioned PET felts filling block parts machining process in, described plus
Thermal technology's installing is equipped with local heating area, and the local heating area is used for being oriented heating to the PET felts.
Preferably, in above-mentioned PET felts filling block heat parts frock, the local heating area is used for entering the PET felts
Row orientation heating includes：The local heating area is used for relatively thin to design thickness in PET felt filling blocks obtained in the PET felts
Position is oriented heating.
In actual production, for the local heating area of heating frock can be designed to only arrange the heating of thermal source in local
Frock, it is also possible to which be designed to entirely to heat frock is both provided with thermal source.For the former, by changing PET felts raw material with local
The position of the thermal treatment zone is come so that the local heating position of PET felts is the relatively thin position of design size.For the latter, added by starting
The thermal source of thermal technology's dress various location comes so that the local heating position of PET felts is the relatively thin position of design size.
For the beneficial effect of above-mentioned heating frock may refer to the beneficial effect of above-mentioned processing technique part, this does not go to live in the household of one's in-laws on getting married
State.In sum, the invention provides a kind of PET felts filling block parts machining process and heating frock, solve existing processing
Obtained in technique, the local thickness of PET felts filling part cannot get the problem of design requirement.
The above is only the specific embodiment of the present invention, makes skilled artisans appreciate that or realizing this
Bright.Multiple modifications of these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
The above is only the specific embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of PET felts filling block parts machining process, it is characterised in that comprise the following steps：
The heating-up temperature of heating frock is set, and row preheating is put into the heater；
PET felts are placed on the heater loading onto carries out local heating, and wherein, the local heating position of the PET felts is PET felts
The relatively thin position of design thickness in filling block part；
PET felts after by local heating are transferred in molding shaving die and pressurize, and obtain the PET felts filling block part.
2. PET felts filling block parts machining process according to claim 1, it is characterised in that also include：
Cutting PET felts, and the PET felts for obtaining matching with the size of the heating frock and the molding shaving die.
3. PET felts filling block parts machining process according to claim 1, it is characterised in that the PET after by local heating
Felt is transferred to pressurization in molding shaving die, and obtaining the PET felts filling block part includes：
Using fixture by local heating after PET felts be transferred in the molding shaving die and pressurize, obtain PET felts filling
Block part.
4. PET felts filling block parts machining process according to claim 1, it is characterised in that the local heating temperature
For 180-200 DEG C, heat time heating time is 70-120s.
5. PET felts filling block parts machining process according to claim 1, it is characterised in that the moulding pressure is 15-
20MPa, molding time are 60-90s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401057.7A CN105034331B (en) | 2015-07-08 | 2015-07-08 | PET felt filling block parts machining processes and heating frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401057.7A CN105034331B (en) | 2015-07-08 | 2015-07-08 | PET felt filling block parts machining processes and heating frock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105034331A CN105034331A (en) | 2015-11-11 |
| CN105034331B true CN105034331B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510401057.7A Active CN105034331B (en) | 2015-07-08 | 2015-07-08 | PET felt filling block parts machining processes and heating frock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1299648B1 (en) * | 1998-03-18 | 2000-03-24 | Isap Omv Group Spa | PROCESS AND PLANT FOR SELECTIVE HEATING BY ZONES OF A THERMOFORMABLE MATERIAL |
| US7097805B2 (en) * | 2004-06-09 | 2006-08-29 | Microcell Composite Company | Method for manufacturing slippery-proof foam materials having protruded threads |
| CN101987511B (en) * | 2010-08-09 | 2012-04-25 | 无锡吉兴汽车声学部件科技有限公司 | Method for producing automotive sound-insulating pad |
| CN202826395U (en) * | 2012-09-17 | 2013-03-27 | 黄石华亿塑胶有限公司 | Electricity and steam dual-purpose polyvinyl chloride (PVC) plastic plate local heating device |
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