CN104289602A - Movable block combined type hot forming turnup mold and use method - Google Patents
Movable block combined type hot forming turnup mold and use method Download PDFInfo
- Publication number
- CN104289602A CN104289602A CN201410512871.1A CN201410512871A CN104289602A CN 104289602 A CN104289602 A CN 104289602A CN 201410512871 A CN201410512871 A CN 201410512871A CN 104289602 A CN104289602 A CN 104289602A
- Authority
- CN
- China
- Prior art keywords
- lower mold
- mold body
- lip
- limited block
- movable
- 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.)
- Granted
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
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Duct Arrangements (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a movable block combined type hot forming turnup mold and a use method, and belongs to the field of machining of precision sheet metal. The movable block combined type hot forming turnup mold comprises a lower mold body, an upper mold body, a wedge, a positioning pressing block, a scribed pin and a movable lip limit block, and the external profile of an air inlet channel serves as a standard. Turnup formation and hot shaping are carried out on the aluminum alloy thin-wall air inlet channel with a complex turnup structure through the hot forming technology, the air inlet channel is accurately positioned through the movable limit block in the mold, and the problem that turnup of a lip of the air inlet channel is difficult is solved. A part can be taken out by taking down the movable limit block after being formed, and the problem that demolding is difficult after turnup of the air inlet channel is conducted is solved. The movable block combined type hot forming turnup mold is suitable for precision formation of air inlet channels which are made of aluminum alloy and the like and provided with the complex turnup structure.
Description
Technical field
The present invention relates to a kind of combined hot shaping and curring die tool, particularly relate to the Moveable-combined type hot forming flanging die of the aluminium alloy thin-walled air intake duct of a kind of complicated shape.Be applicable to the precision form of the complicated turnup structure air intake duct of the material webs such as Aero-Space aluminium alloy, belong to accurate panel beating field.
Background technology
At present, the manufacture of airborne vehicle air intake duct is to lightweight, abnormal shapeization and integration future development, and the structure of certain model air intake duct has been designed to the special-shaped curved hollow closed structure of metal thin-wall.For such special-shaped complex structural member, adopt overall superplastic forming technology to obtain comparatively ideal effect, can ensure that once-forming, the curved surface of special-shaped complex structural member smoothly transit.But only adopt overall superplastic forming technology for the air intake duct with complicated turnup structure, can not be shaped complete turnup structure, and part removal is difficult.The easy demoulding of air intake duct after the air intake duct of the integration band flange that how can be shaped qualified can make shaping again solves the key that this class is shaped with complicated turnup structure air intake duct.And existing combined type cooling die movable pad hot-forming die, need to use cooling component just can complete heat-punch member, its complex structure, parts are many, and operation use procedure is loaded down with trivial details, and still can not effectively process for the air intake duct of the complicated turnup structure of band.
Summary of the invention
The invention discloses a kind of Moveable-combined type hot forming flanging die, be intended to the deficiency that the shaping of air intake duct flange place is difficult, the demoulding is difficult for the complicated turnup structure of band, overall superplastic forming is adopted to obtain on the preform basis of basic configuration at airborne vehicle air intake duct, Moveable-combined type hot-forming die is adopted to complete flange and hot school shape, be shaped and the whole body shaping of air intake duct in order to realize air intake duct flange place, and by regulating the loose piece device in mould, solve the problem of the complicated turnup structure air intake duct demoulding difficulty of band.
The die cavity of this Moveable-combined type hot forming flanging die and core, using air intake duct outer mold surface as benchmark, mainly comprise the lower mold body of upper die body and the movable limited block of band lip.
This Moveable-combined type hot forming flanging die, comprise lower mold body (1), upper die body (7), voussoir (3), location briquetting (4), reticle pin (8), also comprise the movable limited block (2) of lip;
Lower mold body and upper die body get using air intake duct head lip profile and air intake duct postmedian variable cross-section curved cylinder outer mold surface largest contours line as die joint; Wherein, upper die body core is air intake duct head lip profile, and lower mold body one end die cavity is the curved cylinder outer mold surface of air intake duct rear portion variable cross-section; Upper die body and lower mold body are coincide, and upper die body and lower mold body align matched moulds;
The other end of location briquetting and lower mold body coincide and assembles;
The profile of the participation flange of the movable limited block of lip is the minimum profile forms of air intake duct head lip flange radius of curvature, the movable limited block of lip, by compression securing member (5) and tension use securing member (6), is fasteningly arranged in the middle part of lower mold body;
Voussoir loads in the gap between the movable limited block of lip and location briquetting; Ensure to fit tightly between three, thus make voussoir play the effect that movable for lip limited block laterally can be pressed in lower mold body;
Reticle pin is arranged on the symmetrical center positions of the core profile of upper die body.
On the basis of technique scheme,
Described upper die body and lower mold body align matched moulds; It is the incompatible realization of detent kissing by both sides on the positioning boss of both sides on upper die body and lower mold body.
Be provided with location facade and positioning slide in the middle part of lower mold body and be used for the movable limited block of equipped lip, and limited block is fastening is arranged in lower mold body by lip activity to utilize compression securing member (5) and tension securing member (6);
Location briquetting coincide by the wedge-shaped impression on it and the wedge shape positioning boss in lower mold body, realize location briquetting and lower mold body be equipped with;
Described compression securing member (5), tension securing member (6), can adopt bolt and nut.
This hot forming flanging die using method is:
1) under room temperature state, by upper die body and lower mold body with lower mold body lip inclined-plane for benchmark equipped after, entirety is placed on the lower platform of hot former, then is fastened on the upper and lower platform of hot former respectively by upper die body, lower mold body;
2) after die sinking, the preform be shaped adopting superplastic forming technology puts into lower mold body (1), is fitted in lower mold body by movable for lip limited block;
3) adjust compression securing member (5), tension securing member (6), make the movable limited block of lip press preform;
4) briquetting (4) will be located be fitted in lower mold body, then voussoir (3) be loaded in the gap between location briquetting (4) and the movable limited block (2) of lip, and ensure that three fits tightly;
5), when heating mould is to thermoforming temperatures, make upper die body (7) slowly press to blank lip place and make preform be close to lower mold body to complete flange, heat-insulation pressure keeping certain hour completes the whole body shaping of air intake duct;
6) open upper die body and lower mold body, pull down voussoir, location briquetting, compression securing member (5) and tension securing member (6) from lower mold body, and along the movable limited block of mould axial direction pull-out lip, take out the workpiece after being shaped.
Beneficial effect of the present invention:
After this Moveable-combined type hot forming flanging die clamps air intake duct jointly by the movable limited block of lip, location briquetting and lower mold body, utilize patrix to apply pressure to inlet lip position, the shaping of Inlet Complex flange can be realized and realize the whole body shaping of air intake duct.Die-filling with the difficulty such as the demoulding, positioning and clamping for air intake duct, this mould have employed the Moveable-combined type structure different from traditional monoblock type hot school shape mould, achieve accurate location, strong clamping, steadily flange, be easy to the functions such as the demoulding, in part, outer mold surface seamlessly transits, surface quality is high, the dimensional accuracy of part can be ensured, the air intake duct integration of the complicated turnup structure of band is made to be processed into possibility, decrease the welding bead quantity of air intake duct, improve the intensity of air intake duct, highly shortened the manufacturing cycle of part.
Aluminium alloy thin-walled air intake duct for the complicated turnup structure of band adopts hot forming techniques to complete flanging forming and hot school shape, realizes precise positioning by the movable limited block in mould to air intake duct, solves the problem of the difficult flange of inlet lip; Take off movable limited block after shaping and can take out part, the problem of the difficult demoulding after solving air intake duct flange.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram after the movable limited block of lower mold body of the present invention and lip is assembled
Fig. 2 is lower mold body structural representation of the present invention
Fig. 3 is the movable limited block schematic shapes of lip of the present invention
A) a face of the movable limited block of lip
B) the b face of the movable limited block of lip
Fig. 4 is that the present invention locates briquetting schematic shapes
Fig. 5 is upper die structure schematic diagram of the present invention
Fig. 6 is hot-forming die counterdie and the schematic diagram of air intake duct in die cavity
Fig. 7 is operating diagram after the upper and lower mould matched moulds of the present invention
Fig. 8 is the air intake duct front view being with complicated turnup structure
Fig. 9 is the air intake duct side view being with complicated turnup structure
Figure 10 is the air intake duct top view being with complicated turnup structure
Figure acceptance of the bid score not Biao Shi: 1-lower mold body, the movable limited block of 2-lip, 3-voussoir, 4-location briquetting, 5-compress with bolt, nut, 6-tension bolt, nut, 7-upper die body, 8-reticle pin, 9-wedge shape positioning boss, 10-detent, 11-location facade, 12-lip inclined-plane, 13-positioning slide, 14-positioning table, 15-positioning boss, 16-air intake duct, 17-facade
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Embodiment 1
Moveable-combined type hot forming flanging die, total score is the counterdie of the movable limited block of patrix and band.
Mainly comprise lower mold body 1, the movable limited block 2 of lip, voussoir 3, location briquetting 4, compression securing member 5, tension securing member 6, upper die body 7, the reticle pin 8 be arranged on upper die body.
As shown in Figure 1, counterdie is made up of jointly lower mold body 1, the movable limited block 2 of lip, voussoir 3, location briquetting 4, compression securing member 5, tension securing member 6.The movable limited block 2 of lip is fitted in after in lower mold body 1 and can forms complete inlet lip profile with lower mold body, as flange datum level corresponding with upper die body core profile during air intake duct flange, ensures flange size.The movable inner surface of limited block 2 of lip and the cavity surface of lower mold body are adjacent to the external surface of air intake duct blank jointly, and when preventing flange, the displacement along the oblique rear of mould axial direction occurs air intake duct blank in lower mode cavity.
As shown in Figure 2, the cavity surface of lower mold body 1 is made up of the external surface on air intake duct head lip inclined-plane and air intake duct rear portion tubular external surface, and has a positioning table 14.When preform is loaded in lower mold body, on preform preshaped go out facade to fit with the facade of positioning table, prevent the displacement that blank occurs along mould axial direction oblique upper in die cavity.The b face of the location facade 11 in lower mold body, positioning slide 13 completes the position-limiting action to the movable limited block of lip jointly.
As shown in Figure 3, when the movable limited block of lip is in place in lower mold body, will fit with the location facade 11 of lower mold body in a face, will fit with the b face in lower mold body in b face.
As shown in Figure 4, after location briquetting 4 assembles with lower mold body, the c face on it should be adjacent to the external surface of air intake duct blank.
As shown in Figure 5, the reticle pin 8 be arranged on upper die body is positioned in the symmetrical center line of core profile, the center line of air intake duct flange shape can be carved at the upper surface of inlet lip, as the benchmark of air intake duct following process when upper and lower mould matched moulds makes air intake duct blank flange put in place simultaneously.
Lower mold body and upper die body get using air intake duct head lip profile and air intake duct postmedian variable cross-section curved cylinder profile largest contours line as die joint.
The movable limited block 2 of lip is arranged in lower mold body 1, and reticle pin 8 is arranged on upper die body 7; After twice positioning boss on upper die body 15 and two place's detents 10 in lower mold body coincide simultaneously, what realize patrix and counterdie aligns matched moulds; Lower mold body 1 there are two places' location facades and positioning slide are used for the movable limited block 2 of equipped lip, and utilize compression bolt and nut 5, tension bolt and nut 6 to be fastened in lower mold body by movable for lip limited block; Location briquetting 4 is coincide by two place's wedge-shaped impressions on it and the wedge shape positioning boss in lower mold body and realizes locating being equipped with of briquetting and lower mold body; Voussoir 3 finally loads in the space between the movable limited block of lip and location briquetting, ensures to fit tightly between three thus makes voussoir play the effect that movable for lip limited block laterally can be pressed in lower mold body.
As shown in Figure 7, the using method of Moveable-combined type hot forming flanging die is as follows:
1) after the detent of two place's positioning boss of upper die body and lower mold body being coincide simultaneously upper and lower mould matched moulds being aligned, mold integral is placed on the lower workbench of hot former, utilizes lathe to provide pressing plate for oneself and is fixed on lower workbench and upper workbench by lower mold body, upper die body respectively;
2) after die sinking, the curved cylinder blank adopting overall superplastic forming technology to be shaped evenly is coated with slip coating graphite aqua and dries, under normal temperature, curved cylinder blank is put into lower mold body die cavity, with the positioning boss positioning assembling on the movable limited block 2 of lip in lower mold body; Location briquetting, voussoir are installed successively again in lower mold body;
3) and utilize that compression bolt, nut and tension bolt, nut make a face of the movable limited block of lip, b face is adjacent to the location facade in lower mold body, b face respectively thus clamps blank;
4) location briquetting 4 is fitted in lower mold body by the wedge shape positioning boss location recycled in lower mold body, then is loaded by voussoir 3 in the gap between location briquetting 4 and the movable limited block 2 of lip, and ensures that three fits tightly;
5) hot former starts and heats up, and when lathe reaches operating temperature, makes the slow matched moulds of upper and lower mould complete flanging forming and heat-insulation pressure keeping certain hour completes the whole body shaping of air intake duct;
6) upper die body and lower mold body is opened, observe forming effect, lower mold body, pull down voussoir, location briquetting, compression bolt, nut and tension bolt, nut successively, and along the movable limited block of mould axial direction pull-out lip, take out the workpiece after being shaped.
According to part final size in Fig. 8 ~ 10 to the part line after shaping, adopt emery wheel cutting or Linear cut mode to remove surplus, sharpened edge, remove burr, the final part of acquisition shown in Fig. 8-10.
As shown in figs. 8-10, mould and preform are when reaching operating temperature, the core of patrix is with the slow contact openings of the decline air intake duct preform be fixed in counterdie upward of lathe upper mounting plate, continuing to move down and utilize the core profile of patrix outwards to be turned by the material of blank opening along with patrix, fit with counterdie gradually, when held for some time after upper and lower mould matched moulds and intensified pressure.Can see after die sinking that blank lip is fitted completely with counterdie, but the workpiece after shaping cannot be taken out.Again lathe lower platform and counterdie are shifted out, take off tension securing member and compress securing member, voussoir, location briquetting, the movable limited block of pull-out lip, just desirable go out workpiece.
From the present embodiment, use mould of the present invention and the method adopting the present invention to propose, practical effect is that blank is die-filling and be convenient in demoulding, can not be subjected to displacement when can ensure blank flange by the position of the positioning table in the movable limited block of lip and lower mold body and determine the flange position of blank, the movable Inner profile of limited block of lip and the cavity surface of lower mold body and the c face of locating briquetting realize clamping the front and back of blank jointly, through the profile measurement to the air intake duct after shaping, be not more than 0.5mm with the error of theoretical profile, reach expection object.
The foregoing is only better possible embodiments of the present invention, not thereby limit to the scope of the claims of the present invention, therefore the equivalent structure change that every utilization description of the present invention and accompanying drawing content are done, be all contained in protection scope of the present invention.
Claims (6)
1. a Moveable-combined type hot forming flanging die, comprises lower mold body, upper die body, voussoir, location briquetting, reticle pin, it is characterized in that, also comprises the movable limited block of lip;
Lower mold body and upper die body get using air intake duct head lip profile and air intake duct postmedian variable cross-section curved cylinder outer mold surface largest contours line as die joint; Wherein, upper die body core is air intake duct head lip profile, and lower mold body one end die cavity is the curved cylinder outer mold surface of air intake duct rear portion variable cross-section; Upper die body and lower mold body align matched moulds;
The other end of location briquetting and lower mold body coincide and assembles;
The profile of the participation flange of the movable limited block of lip is the minimum profile forms of air intake duct head lip flange radius of curvature; The movable limited block of lip, by compression securing member and tension securing member, is fasteningly arranged in the middle part of lower mold body;
Voussoir loads in the gap between the movable limited block of lip and location briquetting;
Reticle pin is arranged on the symmetrical center positions of the core profile of upper die body.
2. Moveable-combined type hot forming flanging die according to claim 1, is characterized in that, it is the incompatible realization of detent kissing by both sides on the positioning boss of both sides on upper die body and lower mold body that described upper die body and lower mold body align matched moulds.
3. Moveable-combined type hot forming flanging die according to claim 1, it is characterized in that, be provided with location facade and positioning slide in the middle part of lower mold body and be used for the movable limited block of equipped lip, and limited block is fastening is arranged in lower mold body by movable for lip to utilize compression securing member and tension securing member.
4. Moveable-combined type hot forming flanging die according to claim 1, is characterized in that, location briquetting is coincide by the wedge-shaped impression on it and the wedge shape positioning boss in lower mold body, realizes being equipped with of location briquetting and lower mold body.
5. Moveable-combined type hot forming flanging die according to claim 1, is characterized in that, described compression securing member and tension securing member, adopts bolt and nut.
6. the using method of Moveable-combined type hot forming flanging die according to claims 1 to 5, comprising:
1) by upper die body and lower mold body with lower mold body lip inclined-plane for benchmark equipped after, entirety is placed on the lower platform of hot former, then is fastened on the upper and lower platform of hot former respectively by upper die body, lower mold body;
2) after die sinking, the preform be shaped adopting superplastic forming technology puts into lower mold body, is fitted in lower mold body by movable for lip limited block;
3) adjust compression securing member and tension securing member, make the movable limited block of lip press preform;
4) location briquetting is fitted in lower mold body, then voussoir is loaded in the gap between location briquetting and the movable limited block of lip, and ensure that three fits tightly;
5), when heating mould is to thermoforming temperatures, make upper die body slowly press to blank lip place and make preform be close to lower mold body to complete flange, heat-insulation pressure keeping certain hour completes the whole body shaping of air intake duct;
6) open upper die body and lower mold body, pull down voussoir, location briquetting, compression securing member and tension securing member from lower mold body, and along the movable limited block of mould axial direction pull-out lip, take out the workpiece after being shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512871.1A CN104289602B (en) | 2014-09-29 | 2014-09-29 | Moveable-combined type hot forming flanging die and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512871.1A CN104289602B (en) | 2014-09-29 | 2014-09-29 | Moveable-combined type hot forming flanging die and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104289602A true CN104289602A (en) | 2015-01-21 |
| CN104289602B CN104289602B (en) | 2018-01-09 |
Family
ID=52309680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410512871.1A Active CN104289602B (en) | 2014-09-29 | 2014-09-29 | Moveable-combined type hot forming flanging die and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104289602B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156429A (en) * | 1996-11-29 | 1998-06-16 | Hitachi Ltd | Method for forming tube having complicated special cross section tube |
| CN101033007A (en) * | 2007-04-24 | 2007-09-12 | 江西洪都航空工业集团有限责任公司 | Aircraft inlet lip |
| EP2474474A2 (en) * | 2011-01-06 | 2012-07-11 | Hamilton Sundstrand Corporation | Arrangement for maintaining flow to an air inlet of an auxiliary power unit assembly |
| CN103464561A (en) * | 2013-06-13 | 2013-12-25 | 上海飞机制造有限公司 | Forming die of skin part for airplane |
| CN103748337A (en) * | 2011-04-29 | 2014-04-23 | 航空集团联合控股公司 | Adjustable supersonic air inlet |
| CN103769482A (en) * | 2013-10-22 | 2014-05-07 | 北京航星机器制造有限公司 | Global shaping mould and method of titanium alloy air inlet part |
| CN103817229A (en) * | 2012-11-16 | 2014-05-28 | 无锡爱博金属制品有限公司 | Raising, flanging and forming die for front main rocker arms of cars |
-
2014
- 2014-09-29 CN CN201410512871.1A patent/CN104289602B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156429A (en) * | 1996-11-29 | 1998-06-16 | Hitachi Ltd | Method for forming tube having complicated special cross section tube |
| CN101033007A (en) * | 2007-04-24 | 2007-09-12 | 江西洪都航空工业集团有限责任公司 | Aircraft inlet lip |
| EP2474474A2 (en) * | 2011-01-06 | 2012-07-11 | Hamilton Sundstrand Corporation | Arrangement for maintaining flow to an air inlet of an auxiliary power unit assembly |
| CN103748337A (en) * | 2011-04-29 | 2014-04-23 | 航空集团联合控股公司 | Adjustable supersonic air inlet |
| CN103817229A (en) * | 2012-11-16 | 2014-05-28 | 无锡爱博金属制品有限公司 | Raising, flanging and forming die for front main rocker arms of cars |
| CN103464561A (en) * | 2013-06-13 | 2013-12-25 | 上海飞机制造有限公司 | Forming die of skin part for airplane |
| CN103769482A (en) * | 2013-10-22 | 2014-05-07 | 北京航星机器制造有限公司 | Global shaping mould and method of titanium alloy air inlet part |
Non-Patent Citations (2)
| Title |
|---|
| 翁培奋，郭荣伟: "S弯进气道旋流的有效控制", 《上海交通大学学报》 * |
| 钟翔山: "抽风筒的新型翻边―整形复合模设计", 《通用机械》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104289602B (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106881387B (en) | A kind of aluminum alloy curved stiffener plate hot press forming method | |
| CN202752523U (en) | Automobile steering knuckle multidirectional die forging precision forging forming die | |
| CN2860659Y (en) | Thermomechanical treatment composite die | |
| CN111266462B (en) | Shape correction die and method for complex titanium alloy machining part | |
| CN101791671A (en) | Precision forging method of titanium alloy blade | |
| CN202123188U (en) | Large gear combination forging die | |
| CN104625624A (en) | Manufacturing method and device for double-rim walking wheel | |
| CN114260650B (en) | Sheet metal forming method for airplane homodromous bent narrow-long-mouth part | |
| CN102989143A (en) | Method for manufacturing golf club head | |
| CN201073671Y (en) | Composite reamer block structure for die flanging and trimming | |
| CN105642725A (en) | Punch forming technology of irradiation monitoring pipe half groove shell shaped like Chinese character 'ji' | |
| CN104289602A (en) | Movable block combined type hot forming turnup mold and use method | |
| CN202079151U (en) | Automobile plate-spring supporting-seat edge-cutting mould | |
| CN204747242U (en) | Rim becomes major part mould | |
| CN208787346U (en) | A kind of automotive muffler blanking die mould composite die | |
| CN206779297U (en) | A kind of side reshaping die frock of car model gusset plate | |
| CN115382972A (en) | Concave curve titanium alloy angle section forming method | |
| CN210188463U (en) | Split type side form and wheel hub mould of using thereof | |
| CN206936155U (en) | 133 magazine shaping moulds | |
| CN207343584U (en) | A kind of precise punching die | |
| CN205967098U (en) | Follow -on car tail pipe plastic mould | |
| CN207308726U (en) | Reinforcing plate drawing die | |
| CN201597136U (en) | Self-tightening steel plate in aluminum alloy pattern of radial tire mold | |
| CN206936157U (en) | J201 casing body shaping moulds | |
| CN206028631U (en) | Automobile control arm forges mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |