CN108237177B - Splicing welding plate thermoforming die - Google Patents
Splicing welding plate thermoforming die Download PDFInfo
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- CN108237177B CN108237177B CN201711240600.5A CN201711240600A CN108237177B CN 108237177 B CN108237177 B CN 108237177B CN 201711240600 A CN201711240600 A CN 201711240600A CN 108237177 B CN108237177 B CN 108237177B
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- 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
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Abstract
The invention provides a hot forming die for a tailor-welded blank, which relates to the technical field of material forming and comprises a press template, a die holder, a suspension module and an elastic part; the suspension module comprises a first suspension module and a second suspension module, and a forming cavity for placing the tailor-welded blank is arranged between the press template and the first suspension module and between the press template and the second suspension module; act on the one end that the press template was kept away from to the suspension module through the elastic component for first suspension module and second suspension module can float from top to bottom for the die holder, thereby compensate the material thickness deviation of tailor-welded blank, make the mould with tailor-welded blank laminating, the plate of multicavity production can cool off under the same condition, in order to reach the protection of best production efficiency and die insert, the production efficiency that has been alleviated to exist among the prior art is limited, the yields is low and partial terrace die insert damage causes life's reduction and the increase's of cost technical problem, the production efficiency is provided, the defective percentage is reduced, the life of die insert is prolonged.
Description
Technical Field
The invention relates to the technical field of material forming, in particular to a tailor-welded blank hot forming die.
Background
The laser tailor-welded blank is formed by automatically assembling and welding a plurality of steel materials, stainless steel materials, aluminum alloy materials and the like with different materials, different thicknesses and different coatings by adopting laser energy to form an integral plate, a section bar, a sandwich plate and the like so as to meet different requirements of parts on material performance, and realize light weight of equipment by using lightest weight, optimal structure and optimal performance.
In the prior art, as shown in fig. 1, the material thickness of the tailor-welded blank in the area a is the lower negative tolerance limit, and the material thickness of the tailor-welded blank in the area B is the upper positive tolerance limit, and the influence of this deviation has the result that when the area B is in zero contact with the punch and die in the die cavity, the gap between the area a of the material sheet and the die cavity in the die cavity is 0.1 mm. Theoretically, the area A and the area B share the force of the press together, but due to the influence of tolerance, the pressure of the tailor-welded blank with positive tolerance and the die body becomes larger than the theoretical value, and the tailor-welded blank with negative tolerance and the die body have certain clearance.
However, the production mould of laser tailor-welded blank among the prior art can direct influence make the cooling rate in B district several times A district to the problem that causes has: 1. the production efficiency is limited, and the production takt is limited by the cooling time of the tailor-welded blank with the slowest cooling. 2. The yield is low, and the reduced cooling speed inevitably brings incomplete conversion of martensite, thereby influencing the tensile strength of the parts. 3. Part of the male die insert is damaged: when the slowest-cooling tailor-welded blank can meet the strength condition for demoulding, the influence of thermal expansion of the fast-cooling plate can tightly hold the male die due to lower temperature, the male die insert is easily pulled out of traces to the 1500MPa hot forming steel plate to cause die damage, the insert needs to be replaced to a certain extent due to damage, and the service life is shortened and the cost is increased.
Disclosure of Invention
The invention aims to provide a hot forming die for a tailor-welded blank, which solves the technical problems of limited production efficiency, low yield, reduced service life caused by damage of part of male die inserts and increased cost in the prior art.
The invention provides a tailor-welded blank thermoforming mould, which is formed by welding plates with different thicknesses, and comprises: the device comprises a press template, a die holder, a suspension module and an elastic part;
the suspension module comprises a first suspension module and a second suspension module, the first suspension module and the second suspension module are arranged side by side, the die holder is provided with a placing groove, the first suspension module, the second suspension module and the elastic part are arranged in the placing groove, the first suspension module and the second suspension module are connected with the die holder through the elastic part, and the first suspension module is connected with the second suspension module in a sliding manner;
the press machine template is arranged at one end, far away from the die holder, of the first suspension module and the second suspension module, and a forming cavity for placing the tailor-welded blanks is arranged between the press machine template and the first suspension module and between the press machine template and the second suspension module.
Furthermore, the opening direction of the die holder is upward, and the first suspension module and the second suspension module are both arranged in the placing groove through elastic parts;
the press template acts on the tailor-welded blank of the forming cavity, and the tailor-welded blank is in contact with the first suspension module and the second suspension module so that the elastic part reacts on the first suspension module and the second suspension module.
Furthermore, the opening direction of the die holder is downward, clamping grooves are formed in the ends, far away from the elastic part, of the first suspension module and the second suspension module, clamping plates are arranged on the side walls of the two ends of the die holder and connected with the side walls of the two ends of the die holder, and the clamping plates are clamped with the clamping grooves, so that the first suspension module and the second suspension module are connected with the inner wall of the placing groove through the elastic part;
the press template acts on the tailor-welded blank of the forming cavity, and the tailor-welded blank is in contact with the first suspension module and the second suspension module so that the elastic part reacts on the first suspension module and the second suspension module.
Further, the thickness of the first suspension module and the forming cavity of the press template form a negative tolerance of the tailor welded blank;
the thickness of the second levitation module and the forming cavity of the press platen form a positive tolerance of the tailor welded blank.
Further, the range of the positive and negative tolerance of the tailor-welded blank in the forming cavity is as follows: 0.05 mm.
Furthermore, the welding plate hot forming die provided by the invention also comprises a sliding plate;
the slide sets up between first suspension module and the second suspension module, and first suspension module passes through slide relatively sliding connection with the second suspension module.
Further, the elastic part is provided with a plurality ofly, and a plurality of elastic parts evenly set up in the standing groove, and a plurality of elastic parts all are connected with first suspension module and second suspension module for the slip range of the first suspension module of control and second suspension module, so that the board can all laminate with the surface of first suspension module and second suspension module in the shaping chamber.
Furthermore, the elastic part is a hydraulic cylinder;
the pneumatic cylinder includes fixed part and hydraulic pressure portion, and the hydraulic pressure portion is connected with the fixed part, and the one end and the die holder that the pneumatic cylinder was kept away from to the fixed part are connected, and the one end that the fixed part was kept away from to the hydraulic pressure portion is connected with the suspension module, and the hydraulic pressure portion has hydraulic pressure ability for the fixed part to control the suspension module and float for the die holder.
The invention provides a tailor-welded blank thermoforming mould, which is formed by welding plates with different thicknesses, and comprises: the device comprises a press template, a die holder, a suspension module and an elastic part; the suspension module comprises a first suspension module and a second suspension module, the first suspension module and the second suspension module are arranged side by side, the die holder is provided with a placing groove, the first suspension module, the second suspension module and the elastic part are arranged in the placing groove, the first suspension module and the second suspension module are connected with the die holder through the elastic part, and the first suspension module is connected with the second suspension module in a sliding manner; the press machine template is arranged at one end, far away from the die holder, of the first suspension module and the second suspension module, and a forming cavity for placing the tailor-welded blanks is arranged between the press machine template and the first suspension module as well as between the press machine template and the second suspension module; the elastic part acts on one end, far away from a press machine template, of the suspension module, the first suspension module and the second suspension module can float up and down relative to the die holder, so that material thickness deviation of the tailor-welded blank is compensated, different areas of the tailor-welded blank have the same zero clearance and consistent contact pressure with the first suspension module and the second suspension module through the floating first suspension module and the floating second suspension module, the die is attached to the tailor-welded blank, plates produced in multiple cavities can be cooled under the same condition, the optimal production efficiency and the protection of die inserts are achieved, the technical problems that in the prior art, the production efficiency is limited, the yield is low, and the service life of the insert is reduced due to damage of part of the male die and the increase of the cost are solved, the production efficiency is improved, the defective rate is reduced, and the service life of the insert is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a production mold for a laser tailor-welded blank according to an embodiment of the present invention;
FIG. 2 is a schematic overall structure diagram of a tailor welded blank thermoforming mold according to an embodiment of the present invention;
fig. 3 is a schematic overall structural diagram of another embodiment of a tailor welded blank thermoforming mold according to an embodiment of the present invention.
Icon: 100-press template; 200-a die holder; 300-a suspension module; 301-a first suspension module; 302-a second levitation module; 400-an elastic portion; 500-forming chamber.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 2 is a schematic overall structure diagram of the tailor welded blank thermoforming mold provided in this embodiment.
As shown in fig. 2, the welding plate thermoforming mold provided in this embodiment is formed by welding plates with different thicknesses, and includes: a press template 100, a die holder 200, a suspension module 300, and an elastic part 400; the suspension module 300 comprises a first suspension module 301 and a second suspension module 302, the first suspension module 301 and the second suspension module 302 are arranged side by side, the die holder 200 is provided with a placing groove, the first suspension module 301, the second suspension module 302 and the elastic part 400 are arranged in the placing groove, the first suspension module 301 and the second suspension module 302 are connected with the die holder 200 through the elastic part 400, and the first suspension module 301 is connected with the second suspension module 302 in a sliding manner; the press template 100 is arranged at one end of the first suspension module 301 and the second suspension module 302 far away from the die holder 200, and a forming cavity 500 for placing the tailor welded blank is arranged between the press template 100 and the first suspension module 301 and the second suspension module 302.
The influence of the gaps between the male die and the female die on the production efficiency of a workpiece is far higher than that of a cold stamping die, quenching is the most important ring of hot forming and is the most critical point determining the hot forming efficiency and the decisive point determining the hot forming failure, the heat transfer coefficient during quenching is influenced by the contact pressure, and the heat transfer coefficient is larger when the pressure is larger.
Compared with a cold stamping die, the hot stamping die is sensitive to the contact gap and the contact pressure of the tailor-welded blank, the heat conduction coefficient of the existing gap can be further reduced, the difference of the value can be more than four times, and the quenching speed, the production beat, the part quality and the like are greatly influenced.
The cross-sectional shape of the first suspension module 301 may be various, for example: rectangular, trapezoidal, parallelogram, etc., preferably, the cross-sectional shape of the first suspension module 301 is rectangular.
Preferably, the cross-sectional shape of the second levitation module 302 is rectangular.
The sliding connection between the first suspension module 301 and the second suspension module 302 may be various, for example: through a sliding plate connection, a sliding rail connection, a pulley connection, and the like, preferably, the sliding connection manner between the first suspension module 301 and the second suspension module 302 is a sliding plate connection.
Further, the thickness of the first levitation module 301 and the forming cavity 500 of the press platen 100 create a negative tolerance of the tailor welded blank; the thickness of the second floating die block 302 and the forming cavity 500 of the press platen 100 form a positive tolerance for tailor welding.
Further, the range of positive and negative tolerances for the tailor welded blank within the forming chamber 500 is: 0.05 mm.
Wherein the respective stroke ranges of the elastic part 400 for the first suspension module 301 and the second suspension module 302 are less than 5mm, so that the first suspension module 301 and the second suspension module 302 can offset the positive and negative tolerances of the tailor welded blank in the forming cavity 500, and the first suspension module 301 and the second suspension module 302 have the same zero gap and uniform contact pressure.
The opening direction of the die holder 200 may be upward, and at this time, the first floating die block 301 and the second floating die block 302 are both connected to the die holder 200 through the elastic portion 400, and act on the tailor welded blank of the forming cavity 500 through the press template 100, so that the elastic portion 400 acts against the first floating die block 301 and the second floating die block 302, so that the first floating die block 301 and the second floating die block 302 have the same zero gap and uniform contact pressure.
Fig. 3 is a schematic overall structural diagram of another embodiment of the tailor welded blank thermoforming mold provided in this embodiment.
As shown in fig. 3, the opening direction of the die holder 200 can be downward, and at this time, the first floating module 301 and the second floating module 302 are connected to the die holder 200 through the elastic part 400, and the ends of the first suspension module 301 and the second suspension module 302 far away from the elastic part 400 are provided with clamping grooves, the side walls of the two ends of the die holder 200 are provided with clamping plates, the clamping plates are connected with the side walls of the two ends of the die holder 200 and are clamped with the clamping grooves, so that the first suspension module 301, the second suspension module 302 and the elastic part 400 are all disposed in the placing groove of the die holder 200, the tailor welded blank, which is applied to the forming chamber 500 by the press platen 100, is brought into contact with the first and second levitation modules 301 and 302, so that the elastic part 400 reacts to the first and second levitation modules 301 and 302, so that the first floating module 301 and the second floating module 302 have the same zero gap and uniform contact pressure.
The utility model provides a tailor-welded blank thermoforming mould, tailor-welded blank comprises the panel welding of different thickness, and tailor-welded blank thermoforming mould includes: a press template 100, a die holder 200, a suspension module 300, and an elastic part 400; the suspension module 300 comprises a first suspension module 301 and a second suspension module 302, the first suspension module 301 and the second suspension module 302 are arranged side by side, the die holder 200 is provided with a placing groove, the first suspension module 301, the second suspension module 302 and the elastic part 400 are arranged in the placing groove, the first suspension module 301 and the second suspension module 302 are connected with the die holder 200 through the elastic part 400, and the first suspension module 301 is connected with the second suspension module 302 in a sliding manner; the press template 100 is arranged at one end of the first suspension module 301 and one end of the second suspension module 302, which are far away from the die holder 200, and a forming cavity 500 for placing the tailor-welded blanks is arranged between the press template 100 and the first suspension module 301 and the second suspension module 302; by the elastic part 400 acting on the end of the floating module 300 away from the press ram 100, so that the first and second floating modules 301 and 302 can float up and down relative to the die holder 200, thereby compensating the material thickness deviation of the tailor-welded blank, leading different areas of the tailor-welded blank to have the same zero clearance and consistent contact pressure with the first suspension module 301 and the second suspension module 302 through the floating first suspension module 301 and the second suspension module 302, leading the mould to be attached with the tailor-welded blank, leading the plate produced by multi-cavity to be cooled under the same condition, the production efficiency and the protection of the die insert are optimized, the technical problems of limited production efficiency, low yield, reduction of service life caused by damage of part of the male die insert and cost increase in the prior art are solved, the production efficiency is improved, the defective rate is reduced, and the service life of the die insert is prolonged.
On the basis of the above-mentioned embodiment, further, the elastic part 400 of the tailor-welded blank thermoforming mould that this embodiment provided is provided with a plurality ofly, and a plurality of elastic parts 400 evenly set up in the standing groove, and a plurality of elastic parts 400 all are connected with first suspension module 301 and second suspension module 302 for control first suspension module 301 and second suspension module 302's slip scope, so that tailor-welded blank can all laminate with the surface of first suspension module 301 and second suspension module 302 in the forming cavity 500.
The number of the elastic parts 400 may be two, three, four, etc., and the specific number may be determined according to the length of the placing slot and the lengths of the first and second levitation modules 301 and 302 in a specific case; in addition, the number of the elastic parts 400 is determined to satisfy the pressing force of the press die plate 100 against the floating die block 300.
Among them, the elastic part 400 may be various, for example: compression springs, hydraulic cylinders, or electronic compression element controls, etc.;
further, the elastic part 400 is a hydraulic cylinder, the hydraulic cylinder includes a fixing part and a hydraulic part, the hydraulic part is connected to the fixing part, one end of the fixing part away from the hydraulic cylinder is connected to the die holder 200, one end of the hydraulic part away from the fixing part is connected to the suspension module 300, and the hydraulic part has hydraulic energy relative to the fixing part to control the suspension module 300 to float relative to the die holder 200.
The hydraulic cylinder has certain hydraulic energy as a pressure element, and can act on the positions of the first suspension module 301 and the second suspension module 302 when the press machine template 100 acts on the tailor-welded blank in the forming cavity, and the hydraulic cylinder can enable the first suspension module 301 and the second suspension module 302 to float up and down so that different areas of the tailor-welded blank have the same zero clearance and the same contact pressure with the punch and the die.
The tailor-welded blank thermoforming mould that this embodiment provided, through chooseing for use elasticity portion 400, make elasticity portion 400 can make first suspension module 301 and second suspension module 302 according to press template 100's effort, make the fluctuation, thereby make the different regions of tailor-welded blank have the same zero clearance and unanimous contact pressure with the punch-die, thereby make the cooling rate of the tailor-welded blank of first suspension module 301 and second suspension module 302 department the same, the realization provides production efficiency, the defective percentage has been reduced, the life of extension die insert.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a tailor-welded blank thermoforming mould, tailor-welded blank comprises the panel welding of different thickness, its characterized in that includes: the device comprises a press template, a die holder, a suspension module and an elastic part;
the suspension module comprises a first suspension module and a second suspension module, the first suspension module and the second suspension module are arranged side by side, the die holder is provided with a placing groove, the first suspension module, the second suspension module and the elastic part are all arranged in the placing groove, the first suspension module and the second suspension module are all connected with the die holder through the elastic part, and the first suspension module is connected with the second suspension module in a sliding manner;
the press template is arranged at one end, far away from the die holder, of the first suspension module and the second suspension module, and a forming cavity for placing the tailor welded blanks is arranged between the press template and the first suspension module and between the press template and the second suspension module;
under the effect of elastic part, first suspension module with the second suspension module makes the different regions of tailor-welded blank with first suspension module with the second suspension module has the same zero clearance and unanimous contact pressure, makes press template and tailor-welded blank laminating.
2. The tailor welded blank thermoforming mold according to claim 1, wherein the opening direction of the mold base is upward, and the first suspension module and the second suspension module are both disposed in the placing groove through the elastic portion;
the press die plate acts on a tailor welded blank of the forming cavity, the tailor welded blank being in contact with the first and second levitation modules such that the elastic portion reacts against the first and second levitation modules.
3. The tailor welded blank thermoforming mold according to claim 1, wherein the opening direction of the mold base is downward, a clamping groove is provided at one end of the first suspension module and the second suspension module away from the elastic portion, clamping plates are provided at two side walls of the mold base, the clamping plates are connected with the two side walls of the mold base, and the clamping plates are clamped with the clamping groove, so that the first suspension module and the second suspension module are both connected with the inner wall of the placing groove through the elastic portion;
the press die plate acts on a tailor welded blank of the forming cavity, the tailor welded blank being in contact with the first and second levitation modules such that the elastic portion reacts against the first and second levitation modules.
4. A tailor welded blank thermoforming mold according to any of claims 1-3, wherein the thickness of the first levitation module and the forming cavity of the press template form a negative tolerance of the tailor welded blank;
the thickness of the second levitation module and the forming cavity of the press platen form a positive tolerance of the tailor welded blank.
5. The tailor welded blank thermoforming mold according to claim 4, wherein the range of the positive and negative tolerance of the tailor welded blank in the forming cavity is: 0.05 mm.
6. The tailor welded blank thermoforming mold according to any one of claims 1-3, further comprising a slide plate;
the sliding plate is arranged between the first suspension module and the second suspension module, and the first suspension module and the second suspension module are in relative sliding connection through the sliding plate.
7. The tailor welded blank thermoforming mold according to any one of claims 1 to 3, wherein a plurality of elastic portions are provided, the plurality of elastic portions are uniformly provided in the placement groove, and the plurality of elastic portions are connected to the first suspension module and the second suspension module, so as to control the sliding range of the first suspension module and the second suspension module, so that the tailor welded blank in the forming cavity can be attached to the surfaces of the first suspension module and the second suspension module.
8. The tailor welded blank thermoforming mold according to claim 7, wherein the elastic portion is a hydraulic cylinder;
the pneumatic cylinder includes fixed part and hydraulic pressure portion, the hydraulic pressure portion with the fixed part is connected, the fixed part is kept away from the one end of pneumatic cylinder with the die holder is connected, the hydraulic pressure portion is kept away from the one end of fixed part with the suspension module is connected, the hydraulic pressure portion for the fixed part has hydraulic pressure ability, in order to control the suspension module float for the die holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240600.5A CN108237177B (en) | 2017-11-30 | 2017-11-30 | Splicing welding plate thermoforming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240600.5A CN108237177B (en) | 2017-11-30 | 2017-11-30 | Splicing welding plate thermoforming die |
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| CN108237177A CN108237177A (en) | 2018-07-03 |
| CN108237177B true CN108237177B (en) | 2020-02-07 |
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| CN201711240600.5A Active CN108237177B (en) | 2017-11-30 | 2017-11-30 | Splicing welding plate thermoforming die |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201644635U (en) * | 2010-01-08 | 2010-11-24 | 赵树庄 | Lower die holder of bending machine |
| CN203155836U (en) * | 2013-02-26 | 2013-08-28 | 安徽嘉瑞模具有限公司 | Tailor welded blank drawing die thick plate insert segmentation structure |
| CN203621228U (en) * | 2013-11-14 | 2014-06-04 | 浙江吉利控股集团有限公司 | Stamping die with automatic jacking devices |
| CN105033071B (en) * | 2015-09-18 | 2017-03-22 | 吉林大学 | Die capable of controlling part thermoforming damage distribution |
| CN106583525B (en) * | 2016-12-16 | 2018-06-08 | 武汉理工大学 | For manufacturing the decompressor of unequal thickness plate |
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Effective date of registration: 20210618 Address after: 315336 818 Binhai two road, Hangzhou Bay New District, Ningbo, Zhejiang Patentee after: Geely Automobile Group Co.,Ltd. Patentee after: ZHEJIANG GEELY AUTOMOBILE RESEARCH INSTITUTE Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 318000 Chengdong gate head, Linhai City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG GEELY AUTOMOBILE RESEARCH INSTITUTE Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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