CN1280084C - Annealing method for resin products - Google Patents
Annealing method for resin products Download PDFInfo
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- CN1280084C CN1280084C CN 03130674 CN03130674A CN1280084C CN 1280084 C CN1280084 C CN 1280084C CN 03130674 CN03130674 CN 03130674 CN 03130674 A CN03130674 A CN 03130674A CN 1280084 C CN1280084 C CN 1280084C
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- temperature
- hot melt
- resin
- coating part
- heater
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Abstract
The invention relates to an annealing method for resin products, which can quickly remove a distortion occurring at a heat-welded portion of a resin product without requiring large facilities. In a method for annealing the resin product, a distortion of the resin product occurring at the heat-welded portion 4 welded by heating welding, such as hot plate welding, vibration welding, is removed by heating the heat-welded portion 4 by means of a heater 5. The method is provided with a process for raising the temperature of the surface 4a of the heat-welded portion up to target temperature by irradiation with far infrared rays, and a process for holding the surface temperature of the heat-welded portion at the target temperature by controlling the heating efficiency of the heater. During the holding process, the temperature of the inside 4b of the heat-welded portion is raised up to the target temperature or the temperature near the target temperature.
Description
Technical field
The present invention relates to the method for annealing of novel resin.Be specifically related to remove the technology of the distortion that the hot melt-coating part at resin produces in the short time.
Background technology
Because adopting the deposited method of hot plate, vibrate cladding method such as deposited method and hot melt-coating part on the deposited synthetic resin members produces stress, so must keep removing more than the certain hour described residual stress at a certain temperature.
For this reason, be in almost airtight annealing furnace, resin to be transported heating in the path of regulation in the prior art, and keep removing more than the certain hour technology of residual stress in uniform temperature.
For example, when being set, the travel path that makes resin move prescribed path sets heater on the next door of this travel path in annealing furnace, during resin advancing from the top of described travel path to terminal, make temperature reach the temperature of regulation by described heater heating, reach set point of temperature and will keep this temperature later.
But described existing method for annealing has following problem.
At first,, can make the resin temperature be elevated to uniform temperature and want spended time, exist and inharmonic problem of used time of each operation of making this resin for using the near infrared ray heater annealing furnace bulk temperature to be risen as heater.For example, when making certain Vehicular lamp, with the used time of other operations be about 40 seconds relative, the used time of annealing operation was approximately about 15 minutes.Therefore, on production line, do not produce product and stagnate, must prepare annealing furnace that the resin more than 20 is advanced, just can not produce the vacant time in each operation at production line for making.For this reason, on production line, be used for the big space of annealing furnace needs that a plurality of resins are advanced, have the problem that hinders the manufacturing installation miniaturization.In addition, can make travel path that the resin more than 20 advances and at a plurality of heaters of this travel path next door configuration, installation cost be increased owing to must be provided with, how spended time also makes the heating expense increase simultaneously, has the too high problem of production cost.
In addition, because must be heater configuration in the position that does not influence the resin that moves along prescribed path, so the allocation position of heater is produced restriction.For this reason, removing necessary local generation of resin distortion near the local of heater with away from the part of heater.So produce following problem, even make the temperature that keeps regulation near the place of heater, then the local temperature away from heater does not just reach set point of temperature, and can not fully remove distortion; If make, can rise in local temperature and to be higher than set point of temperature and to produce distortion near heater away from the local temperature that keeps regulation of heater.
Therefore, the present invention can remove the problem that is deformed into that hot melt-coating part at resin produces in the short time not need main equipment.
Summary of the invention
The method for annealing of resin of the present invention, for solving described problem, have the irradiation far infrared and make the surface temperature of the hot melt-coating part of resin rise to the heating process of purpose temperature and the surface temperature of described hot melt-coating part is remained on the maintenance operation of described purpose temperature, in described maintenance operation, make the internal temperature of described hot melt-coating part rise to described purpose temperature.
Thereby, the method for annealing of resin of the present invention, but because the synthetic resin that applies with hot melt, i.e. the hot melt-coating part of FAR INFRARED HEATING that absorbs easily of thermoplastic resin is so the hot melt-coating part that can make resin is in the short time temperature that achieves the goal.
In addition, owing to after the surface temperature of the hot melt-coating part of resin achieves the goal temperature, move on to the maintenance operation that the surface temperature of this hot melt-coating part is remained on the purpose temperature, so can not make the surface temperature of hot melt-coating part be higher than the purpose temperature unusually.
Description of drawings
Fig. 1 is expression method for annealing embodiment of the present invention, the figure of the plan-position relation of expression resin and heater;
Fig. 2 is the amplification profile of heater;
Fig. 3 is the schematic diagram of the whole operation of expression, is the figure that a constructed profile of representing successively by the time sequence to the right side (d) from a left side (a) and curve map are together represented;
Fig. 4 is the curve map of the passing of expression surface temperature of hot melt-coating part and internal temperature.
The specific embodiment
The embodiment of following method for annealing with reference to description of drawings resin of the present invention.Below Shuo Ming embodiment is used in that the hot melt deposited by hot plate, that vibration is deposited etc. applies to the present invention and the method for annealing of removing the residual stress at the junction surface (hot melt-coating part) at lamp body and lamp lens in the peripheral components (resin) of the lamp body of Vehicular lamp and lamp lens joint.
Generally, have the material that is used at the lamp body 2 of the peripheral components 1 in the light fixture space of internal configurations light source etc. and use ABS resin and AAS resin, ASA resin, the material of lamp lens 3 uses allyl resin.In addition, as mentioned above, the peripheral components 1 of Vehicular lamp is the resin of an embodiment of removing the residual stress of hot melt-coating part with the inventive method, is applicable to that resin of the present invention is not limited only to the peripheral components of Vehicular lamp certainly.In addition, each several part material that be bonded with each other is not limited to described resin yet by the hot melt of this resin is deposited, i.e. ABS resin, AAS resin, ASA resin, allyl resin.
The peripheral components 1 of Vehicular lamp is engaged and is formed by periphery 2a, the 3a that hot melt applies lamp body 2 and lamp lens 3.And, the heating when on as the hot melt-coating part 4 of the joint portion of the periphery 3a of the periphery 2a of lamp body 2 and lamp lens 3, applying and residual stress by hot melt.
Far infra-red heater 5 is used in heating to the hot melt-coating part 4 of peripheral components 1.This heater 5 inserts nickel filament in the base material 6 that is made by pottery heating wire 7 forms.For improving the thermal efficiency, make parabolic shape at vertical cross-section, become effective heated perimeter (stroke dotted line hatching zone among the figure) (with reference to Fig. 2) in the zone 8 that forms by the heating face 5a and the paraboloidal spot position F of heater 5.Density at these efficient heat generation scope 8 mid and far infrared lines is dense, and heating efficiency is good.
In addition, emitting far-infrared heater material is not defined as pottery, and the shape of heating face is not limited to parabolic shape yet.
Be provided with and can leaving the mobile foundation 9 that direction of closing moves relative to peripheral components 1 in the place of implementing annealing operation, this mobile foundation 9 supporting a plurality of heaters 5,5 ....Promptly be when mobile foundation 9 is positioned near peripheral components 1, a plurality of heaters 5,5 ... be supported in the hot melt-coating part 4 that makes it to surround peripheral components 1 on the mobile foundation 9.And, as shown in Figure 2, make the hot melt-coating part 4 of peripheral components 1 be arranged in described regional 8 and configuration heater 5,5 ....
Following each operation that is illustrated as hot melt-coating part 4 residual stress of removing peripheral components 1 with reference to Fig. 3.
At first, on work mounting s platform 10, place peripheral components 1.This moment, mobile foundation 9 left the top of peripheral components 1 at position of readiness standby (with reference to Fig. 3 (a)).In addition, be heated to suitable temperature for heater 5,5... energising.
Then, after placing peripheral components 1 on the work mounting s platform 10, mobile foundation 9 descends, and is positioned at the position (with reference to Fig. 1, Fig. 3 (b)) of the hot melt-coating part 4 that surrounds peripheral components 1 at heater 5, the 5... of these mobile foundation 9 supportings.At this state, the hot melt-coating part 4 of peripheral components 1 be positioned at heater 5,5... efficient heat generation scope 8,8 ... in position (with reference to Fig. 2).Thus, beginning heating process.
Then, the temperature of the surperficial 4a of hot melt-coating part 4 is in the temperature that achieves the goal, when promptly reaching as about 80 ° of the glass branchpoint of the material resin of lamp body 2 and lamp lens 3, mobile foundation 9 is risen (with reference to Fig. 3 (c)), make the hot melt-coating part 4 of peripheral components 1 be positioned at heater 5,5 ... efficient heat generation scope 8,8 ... outside the position.Like this, keep operation to begin.
The peripheral components 1 of the rear combination lamp of the standard of automobile is used resin, temperature at the heating face 5a of heater 5 reaches 380 ℃～390 ℃, distance between the surperficial 4a (with reference to Fig. 2) of the heating face 5a of heater 5 and hot melt-coating part 4 is under the situation of 20～40mm, reaches about 80 ℃ as the state of Fig. 3 (a) in the temperature that heating process begins back surperficial 4a of hot melt-coating part 4 about 5 seconds.Then, when the temperature of the surperficial 4a of hot melt-coating part 4 reached about 80 ℃, the temperature of leaving the inner face 4b (with reference to Fig. 2) of heater 5 about 3mm from surperficial 4a reached (with reference to Fig. 4) about 50 ℃.
Then, by with heater 5,5 ... away from hot melt-coating part 4, the surperficial 4a that suppresses hot melt-coating part 4 rises to more than 80 ℃, simultaneously by suitably keep heater 5,5 ... and the distance between the hot melt-coating part 4, when the temperature maintenance of the surperficial 4a that makes hot melt-coating part 4 is certain, the temperature of this surface 4a passes to inside by heat, and the temperature inside of hot melt-coating part 4 is risen.
In addition, when the temperature of the surperficial 4a that suppresses hot melt-coating part 4 rises, for the temperature that makes inner face 4b rises, as adjust heater 5,5 ... the method for the efficiency of heating surface, in described embodiment, express with heater 5,5 ... leave the mode of hot melt-coating part 4, as adjust heater 5,5 ... the mode of the efficiency of heating surface, be not limited only to change distance with hot melt-coating part 4.For example, can heater 5,5 ... and insert between the hot melt-coating part 4 change distance such as cancellous heat shield plate in addition adjustment thermal efficiency mode and keep operation.
As the temperature at the surperficial 4a that keeps hot melt-coating part 4 in about 80 ℃, be used to make internal temperature rises from heater 5,5 ... the climb of heating process position, be about 50mm in the situation of the peripheral components 1 of described rear combination lamp.
Make the temperature of hot melt-coating part 4 inner face 4b rise to as the purpose temperature about 80 ℃,, mobile foundation 9 is risen to described position of readiness (with reference to Fig. 3 (c)) keeping finishing the maintenance operation behind its certain hour.
Then, under the situation of the peripheral components 1 of described rear combination lamp, arrive purpose temperature (80 ℃) (with reference to Fig. 4 (c)), will keep operation lasting about 17 seconds in the temperature of the inner face 4b that begins about 12～13 seconds hot melt-coating parts 4 from heating process.
After described maintenance operation is finished,, remove by heating deposited and remain in the stress of hot melt-coating part 4 by slow cooling.
By described method for annealing, can rise to the purpose temperature of hot melt-coating part with the interior short time at about 30 seconds and keep, obtain harmony with the circulation of the operation of other operations, there is no need only on a production line, to be provided with the place of different room and times, can realize device miniaturization and reduce installation cost and operating cost.
In addition, owing to can carry out the intensification and the insulation of hot melt-coating part separately to each resin, can make the product on the production line flow very smooth and easy.
And then, at described method for annealing since can with a plurality of heaters 5,5 ... be configured to shape with hot melt-coating part 4 and be complementary and surround this hot melt-coating part 4, can not heat and only the place of necessity heating be heated, therefore can eliminate the deformation defect that produces by useless heating the place of unnecessary heating.
In addition, at shape and even the structure and the numerical value thereof etc. of illustrated each parts of described embodiment, all nothing but a concrete example of when enforcement is of the present invention, carrying out.It is not the explanation that thus technical scope of the present invention is limited.
As mentioned above can be clear and definite, the method for annealing of resin of the present invention, remove the distortion that produces by described hot melt-coating part with the hot melt-coating part of heater heating resin, having the irradiation far infrared makes the surface temperature of described hot melt-coating part rise to the heating process of purpose temperature, remain on the maintenance operation of described purpose temperature with surface temperature with described hot melt-coating part, in described maintenance operation, make the internal temperature of described hot melt-coating part rise to described purpose temperature or described purpose temperature near temperature.
Thereby at the method for annealing of resin of the present invention, but because the synthetic resin that applies with hot melt, i.e. the hot melt-coating part of FAR INFRARED HEATING that absorbs easily of thermoplastic resin is so the hot melt-coating part that can make resin is in the short time temperature that achieves the goal.For this reason, can anneal to resin in the utmost point short time.
In addition, owing to after the surface temperature of the hot melt-coating part of resin achieves the goal temperature, move on to the maintenance operation that the surface temperature of this hot melt-coating part is remained on the purpose temperature, so can not make the surface temperature of hot melt-coating part be higher than the purpose temperature unusually.For this reason, can avoid by the rise distortion of the resin form of temperature anomaly.In addition, because surface temperature is delivered to the inside of hot melt-coating part by heat, make internal temperature rise to the purpose temperature in the purpose temperature by the maintenance surface temperature.
And then owing to can anneal to each resin separately, equipment can be small-sized, so can realize device miniaturization and low cost and reduce operating cost.
The method for annealing of the resin of second aspect present invention because described maintenance operation is described heater to be moved so that it is left from described hot melt-coating part by the position that is arranged in heating process, can be easy so be used to keep processing apparatus.
The method for annealing of the resin of third aspect present invention, because described heater has the shape that makes far infrared optically focused, in described heating process, the described hot melt portion of applying is positioned at than the close heater locations of the spot position of far infrared, so can efficiently carry out the intensification of hot melt-coating part.
Claims (3)
1, a kind of method for annealing of resin, the hot melt-coating part of its resin is removed the distortion that produces at described hot melt-coating part with the heater heating, it is characterized in that, have: the irradiation far infrared makes the surface temperature of described hot melt-coating part rise to the heating process of purpose temperature, the surface temperature of described hot melt-coating part is remained on the maintenance operation of described purpose temperature, in described maintenance operation, make the internal temperature of described hot melt-coating part rise to described purpose temperature.
2, the method for annealing of resin as claimed in claim 1 is characterized in that, described maintenance operation is described heater to be moved so that it is left from described hot melt-coating part by the position that is arranged in heating process.
3, the method for annealing of resin as claimed in claim 1 or 2 is characterized in that, described heater has the shape that makes far infrared optically focused, in described heating process the described hot melt portion of applying is positioned at than the close heater locations of the spot position of far infrared.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP131411/2002 | 2002-05-07 | ||
| JP2002131411A JP3970680B2 (en) | 2002-05-07 | 2002-05-07 | Annealing method for resin products |
| JP131411/02 | 2002-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1456434A CN1456434A (en) | 2003-11-19 |
| CN1280084C true CN1280084C (en) | 2006-10-18 |
Family
ID=29416608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03130674 Expired - Fee Related CN1280084C (en) | 2002-05-07 | 2003-05-07 | Annealing method for resin products |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3970680B2 (en) |
| CN (1) | CN1280084C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4914240B2 (en) * | 2007-02-16 | 2012-04-11 | 積水化学工業株式会社 | Heat treatment method for odd-shaped long shaped body |
| JP5547940B2 (en) * | 2009-09-30 | 2014-07-16 | 日本碍子株式会社 | Heating method of sheet-like laminate |
| CN103737915B (en) * | 2013-12-11 | 2015-12-30 | 甘肃大禹节水集团股份有限公司 | A kind of PE hot melt pipe fitting rapid welding technique |
| JP6535554B2 (en) | 2015-09-10 | 2019-06-26 | 株式会社小糸製作所 | Vehicle lamp |
-
2002
- 2002-05-07 JP JP2002131411A patent/JP3970680B2/en not_active Expired - Fee Related
-
2003
- 2003-05-07 CN CN 03130674 patent/CN1280084C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3970680B2 (en) | 2007-09-05 |
| JP2003320593A (en) | 2003-11-11 |
| CN1456434A (en) | 2003-11-19 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20210507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |