CN107309343A - Hot press-formed equipment - Google Patents
Hot press-formed equipment Download PDFInfo
- Publication number
- CN107309343A CN107309343A CN201710602870.XA CN201710602870A CN107309343A CN 107309343 A CN107309343 A CN 107309343A CN 201710602870 A CN201710602870 A CN 201710602870A CN 107309343 A CN107309343 A CN 107309343A
- Authority
- CN
- China
- Prior art keywords
- accommodating chamber
- press
- hot press
- formed equipment
- handgrip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
- B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/18—Advancing work in relation to the stroke of the die or tool by means in pneumatic or magnetic engagement with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses the hot press-formed equipment of one kind, the hot press-formed equipment includes：Casing, the casing has retractable entrance door and outlet portal, and accommodating chamber is limited between the entrance door and the outlet portal, and the wall of the casing is provided with the stomata connected with the accommodating chamber, and the stomata is used to be passed through protective gas；Stamping machine, the stamping machine is installed on the accommodating chamber, and the neighbouring entrance door is set；Shower nozzle, the shower nozzle is outside the accommodating chamber, and neighbouring outlet portal is set.The hot press-formed equipment of the present invention, can effectively suppress in hot stamping operation and transportation light plate oxidation reaction, dephosphorization is high with quenching efficiency, and the plate surface quality of production is high.
Description
Technical field
The invention belongs to thermoforming technology field, in particular to the hot press-formed equipment of one kind.
Background technology
Automotive light weight technology is the important goal that auto manufacturing is constantly pursued, and high-strength steel sheet not only can effectively reduce car
Body weight, can also improve the comfortableness of vehicle and improve crashworthiness.Thermoforming steel is carried out using hot press-formed technology
Processing, can not only improve vehicle security energy, can also cancel internal reinforcing plates and play a part of reducing complete vehicle weight.
In correlation technique, the processing technology of thermoforming steel be by substrate steel sheet by heating furnace be heated to above 950 DEG C it is complete
After full austenite, at least 280s need to be incubated again, after be stamped on stamping machine after the shape intentionally got carry out again quenching it is cold
But, martensitic structure is obtained, so as to improve the tensile strength and forming property of steel plate simultaneously.There is following ask in above-mentioned technique
Topic：Substrate steel sheet is heated to above after 950 DEG C of complete austenitizings, and at least 280s need to be incubated again, and this process light plate will be raw
Into the thick once oxidation iron sheets of 1mm-3mm, steel plate after heating will quickly in punching press and transportation afterwards on stamping machine
Secondary oxidation iron sheet is formed, the thickness of thin of secondary oxidation iron sheet, substrate steel sheet and its interfacial stress are small, it is difficult to peel off.In heat
During Section Steel Production, the once oxidation iron sheet and secondary oxidation iron sheet of generation influence the surface quality of steel plate, exist and change
Enter space.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of heat
Stamping equipment, the hot press-formed equipment can produce the high steel plate of surface quality.
Hot press-formed equipment according to embodiments of the present invention, including：Casing, the casing has retractable entrance door
And outlet portal, accommodating chamber is limited between the entrance door and the outlet portal, and the wall of the casing is provided with and the receiving
The stomata of chamber connection, the stomata is used to be passed through protective gas；Stamping machine, the stamping machine is installed on the accommodating chamber, and adjacent
The nearly entrance door is set；Shower nozzle, the shower nozzle is outside the accommodating chamber, and neighbouring outlet portal is set.
Hot press-formed equipment according to embodiments of the present invention, can effectively suppress in hot stamping operation and transportation
The oxidation reaction of light plate, dephosphorization is high with quenching efficiency, and the plate surface quality of production is high.
Hot press-formed equipment according to an embodiment of the invention, in addition to：Handgrip hangs platform, and the handgrip hangs platform
It is located in the accommodating chamber and positioned between the stamping machine and the outlet portal；Handgrip, the handgrip is arranged on the handgrip
Hang platform.
Hot press-formed equipment according to an embodiment of the invention, the handgrip is magnetic-type.
Hot press-formed equipment according to an embodiment of the invention, in addition to：Transport Desk, a part for the Transport Desk
In the accommodating chamber and below handgrip suspension platform, another part is located at outside the accommodating chamber and positioned at the spray
Head lower section.
Hot press-formed equipment according to an embodiment of the invention, the Transport Desk is roll type.
Hot press-formed equipment according to an embodiment of the invention, the stomata is multiple, and is suitable to and protective gas
Feeding mechanism is connected.
Hot press-formed equipment according to an embodiment of the invention, in addition to：Protective gas feeding mechanism, the protection
Gas supply device is connected by the stomata with the accommodating chamber.
Hot press-formed equipment according to an embodiment of the invention, the stamping machine includes：Press machine upper body, punching press
Lathe lower body, punching press guide pillar and mould, the press machine upper body open up with body phase relative spacing under the press machine and put, institute
Punching press guide pillar is stated to be connected between the press machine upper body and the press machine lower body, and the press machine upper body and institute
State punching press guide pillar to be slidably matched, the mould installion is in the press machine lower body.
Hot press-formed equipment according to an embodiment of the invention, the outlet portal is located at the middle part of the casing and is
Draw and insert-type, the shower nozzle is arranged on the side wall in the outside positioned at the outlet portal of the casing.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the external structure schematic diagram of hot press-formed equipment according to embodiments of the present invention；
Fig. 2 is the internal structure schematic diagram of hot press-formed equipment according to embodiments of the present invention.
Reference：
Under entrance door 1, casing 2, stomata 3, outlet portal 4, press machine upper body 5, punching press guide pillar 6, mould 7, press machine
Body 8, handgrip 9, handgrip suspension platform 10, Transport Desk 11, shower nozzle 12.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, limit
Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".The present invention's
In description, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Hot press-formed equipment according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 2.
As Figure 1-Figure 2, hot press-formed equipment according to an embodiment of the invention includes：Casing 2, stamping machine,
Shower nozzle 12, protective gas feeding mechanism (not shown).
Wherein, casing 2 has retractable entrance door 1 and outlet portal 4, and receiving is limited between entrance door 1 and outlet portal 4
Chamber, and the wall of casing 2 is provided with stomata 3, stomata 3 is connected with accommodating chamber, and stomata 3 is used to be passed through protective gas, protective gas supply
Device is connected by stomata 3 with accommodating chamber, and stamping machine is installed on accommodating chamber, and stamping machine neighboring entry door 1 is set, and shower nozzle 12 is set
In outside accommodating chamber, and shower nozzle 12 is set adjacent to outlet portal 4.
It is understood that when entrance door 1 and outlet portal 4 are closed, accommodating chamber is closed, and protective gas is from stomata 3
Accommodating chamber is passed through, protective gas is used to build anti-oxidation atmosphere, prevents the steel plate of high temperature from aoxidizing, such as protective gas can be nitrogen
Gas, the cost of nitrogen is low, good in oxidation resistance, and protective gas can also be helium, argon gas etc..
In process of production, accommodating chamber is in closed state, and is passed through protective gas, builds inert atmosphere；Steel plate goes out
Heating furnace rear entrance door 1 is opened, and steel plate is positioned over stamping machine and carries out drop stamping；After the completion of punching press, outlet portal 4 is opened, steel plate from
Outlet portal 4 is gone out, and is placed under shower nozzle 12, and outlet portal 4 is closed, and shower nozzle 12 sprays water under high pressure, and dephosphorization is simultaneously quenched；Dephosphorization is completed with quenching
Fire.
Steel plate after punching press is transported in the accommodating chamber of closing, it is possible to reduce the heat losses of the steel plate after punching press, is prevented
Austenite from being transformed into perlite.
Due to inlet porting door 1 and outlet portal 4, effectively nitrogen can be prevented to be lost in, in punching course, the steel of high temperature
Plate is constantly in the atmosphere of protective gas, can effectively prevent the surface oxidation of steel plate, is easy to the dephosphorization and quenching in later stage.
Hot press-formed equipment according to embodiments of the present invention, can effectively suppress in hot stamping operation and transportation
The oxidation reaction of light plate, dephosphorization is high with quenching efficiency, and the plate surface quality of production is high.
Hot press-formed equipment in accordance with a preferred embodiment of the present invention, as shown in figure 1, stomata 3 can be multiple, and
Multiple stomatas 3 are adapted to be connected with protective gas feeding mechanism, than in embodiment as shown in Figure 1, stomata 3 is 4, wherein 4
Individual stomata 3 is arranged in two side walls of casing 2, can so ensure the foot of protective gas content everywhere in accommodating chamber,
It is better protected from steel plate oxidation.
Hot press-formed equipment in accordance with a preferred embodiment of the present invention, as shown in Fig. 2 also including：Handgrip hangs platform
10th, handgrip 9, Transport Desk 11.
Wherein, handgrip suspension platform 10 is located in accommodating chamber and positioned between stamping machine and outlet portal 4, handgrip 9 is arranged on and grabbed
Hand hangs platform 10, and handgrip 9 is used to capture the steel plate after drop stamping, and handgrip 9 can be magnetic-type, and handgrip suspension platform 10 can drive
Handgrip 9 is moved back and forth, and handgrip 9 is captured from stamping machine and can moved after the steel plate after punching press along handgrip suspension platform 10, and steel plate is transported
It is defeated to arrive outlet portal 4, return and continue to capture next block of steel plate at stamping machine, so can efficiently capture the steel plate after punching press.
As shown in Fig. 2 a part for Transport Desk 11 is located in accommodating chamber and positioned at the lower section of handgrip suspension platform 10, Transport Desk 11
Another part be located at that accommodating chamber is outer and positioned at the lower section of shower nozzle 12, a part for Transport Desk 11 is located at the inner side of outlet portal 4, transport
Another part of platform 11 is located at the outside of outlet portal 4, and Transport Desk 11 is used to steel plate transport going out accommodating chamber, and carries steel plate, transports
Defeated 11 is roll type, as shown in Fig. 2 multiple rollers are arranged side by side, steel plate transport can be gone out into accommodating chamber during roller turn, this
Sample steel plate can carry out dephosphorization and quenching after departing from magnet handgrip 9 by efficient transportation to next station.
As depicted in figs. 1 and 2, outlet portal 4 can be located at the middle part of casing 2 and be draw and insert-type, and shower nozzle 12 is arranged on casing 2
The outside positioned at outlet portal 4 side wall.So, the switch of outlet portal 4 to the grade parts of shower nozzle 12 without interference.
As shown in Fig. 2 stamping machine can include：Press machine upper body 5, press machine lower body 8, punching press guide pillar 6 and mould
7, press machine upper body 5 opens up with the phase relative spacing of press machine lower body 8 and put, punching press guide pillar 6 be connected to press machine upper body 5 with
Between press machine lower body 8, and press machine upper body 5 is slidably matched with punching press guide pillar 6, and mould 7 is arranged on press machine lower body
8。
It should be noted that the opening and closing of entrance door 1, the opening and closing of outlet portal 4, the matched moulds punching press of stamping machine, the crawl of handgrip 9
It is by Automated condtrol with movement, it is ensured that the component working on each station is coordinated.
Hot press-formed equipment according to embodiments of the present invention in summary, solve when producing thermoforming parts without
Method removes the industrial problem of once oxidation iron sheet and secondary oxidation iron sheet simultaneously, can effectively suppress to form secondary after steel plate punched
Iron scale, improves the surface quality of part, reduces the heat losses of the part after punching press, it is therefore prevented that austenite is to pearly-lustre
The transformation of body, hangs platform 10 by the handgrip of automatic cycle, the efficiency that stamping parts is captured from stamping machine is improved, by casing
2 install reciprocal Transport Desks 11, shorten the transportation range of part, save number of devices, a whole set of hot press-formed equipment from
Dynamic rate is high, has saved the production time, has reduced production cost.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of hot press-formed equipment, it is characterised in that including：
Casing, the casing has retractable entrance door and outlet portal, is limited between the entrance door and the outlet portal
Accommodating chamber, and the wall of the casing is provided with the stomata connected with the accommodating chamber, the stomata is used to be passed through protective gas；
Stamping machine, the stamping machine is installed on the accommodating chamber, and the neighbouring entrance door is set；
Shower nozzle, the shower nozzle is outside the accommodating chamber, and neighbouring outlet portal is set.
2. hot press-formed equipment according to claim 1, it is characterised in that also include：
Handgrip hangs platform, handgrip suspension platform be located in the accommodating chamber and positioned at the stamping machine and the outlet portal it
Between；
Handgrip, the handgrip is arranged on the handgrip and hangs platform.
3. hot press-formed equipment according to claim 2, it is characterised in that the handgrip is magnetic-type.
4. hot press-formed equipment according to claim 2, it is characterised in that also include：Transport Desk, the Transport Desk
A part is located in the accommodating chamber and below handgrip suspension platform, and it is outer and be located at that another part is located at the accommodating chamber
Below the shower nozzle.
5. hot press-formed equipment according to claim 4, it is characterised in that the Transport Desk is roll type.
6. hot press-formed equipment according to claim 1, it is characterised in that the stomata is multiple, and is suitable to and guarantor
Gas supply device is protected to be connected.
7. hot press-formed equipment according to claim 1, it is characterised in that also include：Protective gas feeding mechanism, institute
Protective gas feeding mechanism is stated by the stomata with the accommodating chamber to be connected.
8. hot press-formed equipment according to claim 1, it is characterised in that the stamping machine includes：On press machine
Opened with body phase relative spacing under the press machine body, press machine lower body, punching press guide pillar and mould, the press machine upper body
Set, the punching press guide pillar is connected between the press machine upper body and the press machine lower body, and the press machine
Upper body is slidably matched with the punching press guide pillar, and the mould installion is in the press machine lower body.
9. hot press-formed equipment according to claim 1, it is characterised in that the outlet portal is located in the casing
Portion and for draw and insert-type, the shower nozzle is arranged on the side wall in the outside positioned at the outlet portal of the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602870.XA CN107309343A (en) | 2017-07-21 | 2017-07-21 | Hot press-formed equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602870.XA CN107309343A (en) | 2017-07-21 | 2017-07-21 | Hot press-formed equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107309343A true CN107309343A (en) | 2017-11-03 |
Family
ID=60178257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710602870.XA Pending CN107309343A (en) | 2017-07-21 | 2017-07-21 | Hot press-formed equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107309343A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704968A (en) * | 2018-05-31 | 2018-10-26 | 浙江智造热成型科技有限公司 | A kind of drop stamping technique and thermoforming production line |
| CN109047430A (en) * | 2018-05-31 | 2018-12-21 | 浙江智造热成型科技有限公司 | A kind of drop stamping technique and heating punching press all-in-one oven |
| CN111389998A (en) * | 2020-03-27 | 2020-07-10 | 张周钦 | Quick automatic stamping device of irregular article of continuity |
| WO2023031838A1 (en) * | 2021-09-01 | 2023-03-09 | Tata Steel Limited | Press system and method of manufacturing hot stamped structural component |
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| CN101439382A (en) * | 2008-12-30 | 2009-05-27 | 山东大学 | Thermal punch forming technique and forming mold for super-strength steel |
| CN101468370A (en) * | 2007-12-28 | 2009-07-01 | 比亚迪股份有限公司 | Amorphous alloy thermoforming apparatus and technique |
| CN101619383A (en) * | 2009-08-05 | 2010-01-06 | 吉林诺亚机电科技有限公司 | Novel thermal forming method of high-strength steel plate stamping part |
| EP2742773A1 (en) * | 2011-08-10 | 2014-06-18 | Roctool | Device for adjusting the quality factor of an induction heating system, in particular a mold with self-contained heating |
| CN205732618U (en) * | 2016-05-16 | 2016-11-30 | 昆山传适达汽车传动系统有限公司 | Heat stamping and shaping production line |
| CN106424279A (en) * | 2016-11-22 | 2017-02-22 | 北京汽车股份有限公司 | Hot stamping device |
| CN106734629A (en) * | 2017-01-16 | 2017-05-31 | 机械科学研究总院先进制造技术研究中心 | A kind of station transport equipment of superplastic forming three |
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| CN101468370A (en) * | 2007-12-28 | 2009-07-01 | 比亚迪股份有限公司 | Amorphous alloy thermoforming apparatus and technique |
| CN101439382A (en) * | 2008-12-30 | 2009-05-27 | 山东大学 | Thermal punch forming technique and forming mold for super-strength steel |
| CN101619383A (en) * | 2009-08-05 | 2010-01-06 | 吉林诺亚机电科技有限公司 | Novel thermal forming method of high-strength steel plate stamping part |
| EP2742773A1 (en) * | 2011-08-10 | 2014-06-18 | Roctool | Device for adjusting the quality factor of an induction heating system, in particular a mold with self-contained heating |
| CN205732618U (en) * | 2016-05-16 | 2016-11-30 | 昆山传适达汽车传动系统有限公司 | Heat stamping and shaping production line |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704968A (en) * | 2018-05-31 | 2018-10-26 | 浙江智造热成型科技有限公司 | A kind of drop stamping technique and thermoforming production line |
| CN109047430A (en) * | 2018-05-31 | 2018-12-21 | 浙江智造热成型科技有限公司 | A kind of drop stamping technique and heating punching press all-in-one oven |
| CN111389998A (en) * | 2020-03-27 | 2020-07-10 | 张周钦 | Quick automatic stamping device of irregular article of continuity |
| CN111389998B (en) * | 2020-03-27 | 2020-11-27 | 深圳永宁现代包装实业有限公司 | Quick automatic stamping device of irregular article of continuity |
| WO2023031838A1 (en) * | 2021-09-01 | 2023-03-09 | Tata Steel Limited | Press system and method of manufacturing hot stamped structural component |
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Application publication date: 20171103 |