CN105772584B - Improve the thermoforming process and molding machine of forming parts performance - Google Patents
Improve the thermoforming process and molding machine of forming parts performance Download PDFInfo
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- CN105772584B CN105772584B CN201410830780.2A CN201410830780A CN105772584B CN 105772584 B CN105772584 B CN 105772584B CN 201410830780 A CN201410830780 A CN 201410830780A CN 105772584 B CN105772584 B CN 105772584B
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Abstract
The present invention provides a kind of thermoforming process and molding machine for improving forming parts performance, thermoforming process is the following steps are included: plate heats in heating furnace, it is sent after complete austenitizing to forming in press, and in this feeding process, Local cooling is being carried out to plate from heating furnace to press.The present invention using after the heating form before localized region carry out it is cooling by the way of, avoid molding after the region generate cracking the defects of, to improve sheet metal formability.
Description
Technical field
The present invention relates to thermoforming technology field, more particularly to a kind of thermoforming process for improving forming parts performance and
Molding machine.
Background technique
There is superhigh intensity, good dimensional accuracy by the part that thermoforming process manufactures, while can effectively subtract
Light car body weight pushes energy-saving and emission-reduction to be of great significance for improving the fuel economy of automobile.Therefore, thermoformed part
As important safety member in body-in-white structure part using more and more extensive.
The thermoformed part manufacturing process applied at present be plate after the abundant austenitizing of heating furnace, by artificial or
Person's automation transmission feeding device, which is transferred directly to tablet on mold, carries out punch forming, each region on the plate before molding
Temperature is almost the same, takes out part after molding after pressure maintaining is cooling, and so far a manufacture circulation is completed.
The part poor for processability needs fit clearance between adjustment die corner and mold repeatedly, needs
A large amount of debugging cost and time are expended, and for certain by debugging insurmountable defect, it can only be by changing product
To solve.Therefore, it is necessary to a kind of thermoforming process that can improve forming parts performance.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of improvement forming parts performances
There is the defects of cracking for part after solving the problems, such as thermoforming in the prior art in thermoforming process and molding machine.
In order to achieve the above objects and other related objects, the present invention provides a kind of thermoforming work for improving forming parts performance
Skill comprising following steps: plate austenitizing in heating furnace is sent after heating to forming in press, and from heating furnace to
In this feeding process of press, Local cooling is carried out to plate.
Preferably, the region that the plate carries out Local cooling is determined by following steps: first by thermoforming finite element
Analysis software calculate product cracking generate first area, then inverse find out first area correspondence it is corresponding on the plate
Position area is to be carried out cooling part.
Preferably, the time for carrying out Local cooling to plate is -4 seconds 2 seconds.
Preferably, described is 100 degree to 200 degree to plate progress the cooled down degree of Local cooling.
The present invention also provides a kind of molding machine of thermoforming process applied to above-mentioned improvement forming parts performance,
It include: the heating furnace for heating plate, the press, and the plate is transmitted between the heating furnace and press
The manipulator of material, and for the cooling body of Local cooling, the cooling body include can with the mobile clamp arm of plate with
And it is placed in the refrigerating head of clamp arm front end, the refrigerating head is equipped with the interface of access cooling medium.
Preferably, the refrigerating head is replaced according to the shape in the region of wanted Local cooling, size.
As described above, the thermoforming process and molding machine of improvement forming parts performance of the invention, have beneficial below
Effect: by the way of carrying out regional area cooling before molding after the heating, avoiding the defects of region generates cracking after forming,
Sheet metal formability is improved, can be immediately arrived at from the hardening curve under thermoforming material different temperatures: with the drop of temperature
Low, material hardening curve is significantly raised, after the drape forming by showing Local cooling after software analytical calculation, processability
It is obviously improved.
Detailed description of the invention
Fig. 1 is shown as the flow chart of the thermoforming process of improvement forming parts performance of the invention.
Fig. 2 is shown as the design schematic diagram in the region of the invention to be cooled down.
Fig. 3 is shown as the material hardening curve graph of typical thermoforming material at different temperatures.
Fig. 4 is shown as the concrete structure schematic diagram of cooling body in molding machine of the invention.
Component label instructions
1 product
11 first areas
2 plates
21 corresponding positions area
3 heating furnaces
4 cooling bodies
41 clamp arms
42 refrigerating heads
43 interfaces
5 press
6 cooling mediums
7 molds
8 manipulators
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It please refers to Fig.1 to Fig.4.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, the present invention provides a kind of thermoforming process for improving forming parts performance comprising following steps:
The austenitizing in heating furnace 3 of plate 2 is sent after heating to forming in press 5, and from heating furnace 3 to this feeding of press 5
Cheng Zhong carries out Local cooling using cooling body 4 to plate 2.The present invention using after the heating molding before carry out regional area into
The cooling mode of row avoids the region after molding from generating the defects of cracking, to improve sheet metal formability.
As shown in Fig. 2, the region that above-mentioned plate carries out Local cooling is determined by following steps: limited by thermoforming first
Meta analysis software calculates the first area 11 that product 1 (i.e. part) cracking generates, then inverse finds out first area 11 and corresponds to
Corresponding position area 21 on plate 2 is to be carried out cooling part.From under thermoforming material different temperatures hardening curve (see
Shown in Fig. 3) it can be seen that, with the reduction of temperature, material hardening curve is significantly raised, by showing phase after software analytical calculation
It answers position area to cool down post-formability in advance to be obviously improved.
The specific plate thermoforming process of the present invention are as follows: first plate 2 is sent into heating furnace 3 and is heated, such as Fig. 1 institute
Show, after the plate 2 of abundant austenitizing is sent out from heating furnace 3, by the manipulator 8 of feeding pick up plate 1 (see
Shown in Fig. 4), while cooling body 4 is 42 participation of the refrigerating head movement for being connected with cooling medium, what clamping obtained through the above steps
Need to carry out cooling region (i.e. above-mentioned corresponding position area 21), then refrigerating head 42 is transferred together in company with plate 2 to press 5
Lower die above upper discharge position at, refrigerating head 42 from clamp plate 2 to unclamp plate time generally at 2-4 seconds, if when
Between it is too long to will cause the cooling of other positions larger, influence final metallographic structure conversion and mechanical performance.Plate is unclamped in manipulator 8
While material, refrigerating head 42 unclamps plate 2, and plate 2 falls to shaping position, and the head clamping that is cooled on plate 2 at this time is cooling
Regional temperature already below other positions temperature, temperature difference is about 100-200 degree, formed low-temperature region, according to thermoforming material
Expect the hardening curve under different temperatures, intensity has been higher by adjacent area herein, then as 5 downlink of press, completes to mold
During former defect area due to after hardened beforehand intensity be higher than neighboring area, deforming from big stress to other small stress
Place's transfer reduces local thinning, this area defects disappearance after molding so that deforming more uniformization.In the mold 7 of press 5
It is connected with cooling medium, Cooling Quenching again after plate forms in press, i.e., when part (i.e. product 1) is being connected with cooling medium 6
In mold 7 after the completion of quenching, die sinking is taken out, and so far whole process is completed.
The present invention also provides a kind of molding machine of thermoforming process applied to above-mentioned improvement forming parts performance,
It include: the above-mentioned heating furnace 3 for heating plate, above-mentioned press 5, and plate 2 is transmitted between heating furnace 3 and press 5
Manipulator 8, and for the cooling body 4 of Local cooling, as shown in Figure 4, cooling body 4 includes can be mobile with plate 2
Clamp arm 41 and the refrigerating head 42 for being placed in clamp arm front end, refrigerating head 42 are equipped with the interface 43 of access cooling medium.Punching press
It needs to select suitable refrigerating head 42 according to the above-mentioned cooled region i.e. shape, size in corresponding position area 21 before starting, i.e.,
Refrigerating head 42 can be replaced as needed, install refrigerating head 42 to corresponding position, when the plate of austenitizing before production
Material 2 picks up plate 2 after sending out in heating furnace 3, through manipulator 8, while 42 participation of refrigerating head acts, in the work of clamp arm 41
Need to carry out cooling corresponding position area 21 with lower clamping, cooling medium is recycled by interface 43, then together in company with plate
The upper discharge position being transferred in press above lower die, while manipulator 8 unclamps plate, refrigerating head 42 also unclamps plate, this
When plate on be cooled the position temperature that is clamped of head 42 already below other positions temperature 100-200 degree.
In conclusion the thermoforming process and molding machine of improvement forming parts performance of the invention, use and are forming
Preceding progress regional area carries out cooling mode, avoids the region after molding from generating the defects of cracking, to improve stamping formability
Energy.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (3)
1. a kind of thermoforming process for improving forming parts performance, which comprises the following steps: plate (2) is heating
Austenitizing in furnace (3) is sent after heating to molding in press (5), and from heating furnace (3) to press (5) this feeding process
In, Local cooling is carried out to plate (2)；The region that the plate (2) carries out Local cooling is determined by following steps: being passed through first
Thermoforming finite element analysis software calculates the first area (11) that product (1) cracking generates, then inverse finds out first area
(11) the corresponding position area (21) corresponded on the plate (2) to be carried out cooling part；It is cold that part is carried out to plate
But process are as follows: the plate of abundant austenitizing picks up plate by the manipulator of feeding after sending out in heating furnace,
The cooling head clamping for being connected with cooling medium in cooling body simultaneously to be carried out cooling part, and refrigerating head turns together in company with plate
It moves at the upper discharge position above the lower die in press, while manipulator unclamps plate, refrigerating head unclamps plate.
2. the thermoforming process of the improvement forming parts performance according to claim 1, it is characterised in that: described to plate
(2) time for carrying out Local cooling is -4 seconds 2 seconds.
3. the thermoforming process of the improvement forming parts performance according to claim 1, it is characterised in that: described to plate
(2) carrying out the cooled down degree of Local cooling is 100 degree to 200 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830780.2A CN105772584B (en) | 2014-12-22 | 2014-12-22 | Improve the thermoforming process and molding machine of forming parts performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830780.2A CN105772584B (en) | 2014-12-22 | 2014-12-22 | Improve the thermoforming process and molding machine of forming parts performance |
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| CN105772584A CN105772584A (en) | 2016-07-20 |
| CN105772584B true CN105772584B (en) | 2019-01-01 |
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| CN201410830780.2A Active CN105772584B (en) | 2014-12-22 | 2014-12-22 | Improve the thermoforming process and molding machine of forming parts performance |
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| CN109433936B (en) * | 2018-10-17 | 2021-02-05 | 苏州普热斯勒先进成型技术有限公司 | Thermal forming production line and production method of variable-strength part |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE20014361U1 (en) * | 2000-08-19 | 2000-10-12 | Benteler Werke Ag | B-pillar for a motor vehicle |
| WO2010150683A1 (en) * | 2009-06-22 | 2010-12-29 | 新日本製鐵株式会社 | Hot press-forming method for steel sheets, hot press-forming device for steel sheets, and steel formed member |
| DE102010010156A1 (en) * | 2010-03-04 | 2011-09-08 | Kirchhoff Automotive Deutschland Gmbh | Process for producing a molded part with at least two structural areas of different ductility |
| CN103384726B (en) * | 2010-12-24 | 2016-11-23 | 沃斯特阿尔派因钢铁有限责任公司 | The method producing the structure member of hardening |
| DE102011114764B4 (en) * | 2011-10-01 | 2016-04-21 | Volkswagen Aktiengesellschaft | Process for the production of form-hardened components and continuous furnace for heating a board provided for molding |
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