CN102699199A - Stamping mold of needle bed insert sheet green body - Google Patents
Stamping mold of needle bed insert sheet green body Download PDFInfo
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- CN102699199A CN102699199A CN2012101756784A CN201210175678A CN102699199A CN 102699199 A CN102699199 A CN 102699199A CN 2012101756784 A CN2012101756784 A CN 2012101756784A CN 201210175678 A CN201210175678 A CN 201210175678A CN 102699199 A CN102699199 A CN 102699199A
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- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 239000000758 substrate Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract 7
- 238000003780 insertion Methods 0.000 abstract 7
- 229910000831 Steel Inorganic materials 0.000 description 39
- 239000010959 steel Substances 0.000 description 39
- 230000000694 effects Effects 0.000 description 11
- 238000004080 punching Methods 0.000 description 11
- 238000009940 knitting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a stamping mold of a needle bed insertion sheet green body, belonging to the technical field of molds. The stamping mold comprises an upper mould mechanism and a lower mould mechanism, wherein the upper mould mechanism comprises an upper template frame, an upper template and an insertion sheet convex stamping mold; the lower mold mechanism comprises a lower template frame and a lower template; the stamping mold is characterized in that one end of the insertion sheet convex stamping mold towards one side of the lower template is high and the other end thereof is low; the height difference between the high end and the low end is equal to the thickness of the needle bed insertion sheet green body to be stamped and molded; the upper mold mechanism further comprises a material pressing plate which is connected with one end of the upper template; a mold guiding hole is arranged on the material pressing plate; a group of spring base cavities is concavely arranged at one side of the material pressing plate; each spring base cavity is internally provided with an offsetting spring; and one end of the offsetting spring is contacted with one side of the upper template. The stamping mold of the needle bed insertion sheet green body, disclosed by the invention, has the advantages of not only guaranteeing quality of the needle bed insertion body, but also reducing requirements on the stamping press, thereby reducing equipment investment, and guaranteeing stamping quality of the needle bed insertion sheet green body.
Description
Technical field
The invention belongs to technical field of mold, be specifically related to the diel of a kind of Neilsbed plug-in sheet base substrate
Background technology
such as the production firm of computer plain flat knitter with use computer plain flat knitter produce fabric manufacturer the reason of knowledge; The knitting needle of the knitting mechanism of controlled flat knitting machine stretches out the distance of needle-bar when turning over the distance of needle tray that pin stretches out needle-bar when connecing pin than normal braiding much longer; Thereby on needle-bar, need set Neilsbed plug-in sheet; Play the effect of protection knitting needle by Neilsbed plug-in sheet; Avoid knitting needle occurring arrogating to oneself and/or beat because of leaning out needle-bar with connecing in the pin process, finally avoid broken needle, dropped stitch and ensure fabric quality such as turning over pin.This can be made much of through the reading to Chinese license notification number CN2742000Y (Neilsbed plug-in sheet of controlled flat knitting machine) and publication number CN101250792A (Neilsbed plug-in sheet).In addition, the concrete shape about Neilsbed plug-in sheet also can more be got information about referring to Chinese patent Granted publication CN300689754D and CN300816000D.
The processing step of
needle bed processing inserted sheet is numerous; Though and on concrete details difference to some extent; But initial step is identical basically; Promptly need obtain Neilsbed plug-in sheet base substrate (industry is also claimed blank), the material of Neilsbed plug-in sheet base substrate is thin steel band, and is obtained by the upper and lower mold mechanism punching out that is fitted to each other that is arranged on the punch press.
prior art usually with soft mode of dashing by stamping machine punch forming Neilsbed plug-in sheet base substrate; So-called soft dashing is meant being cold-strip steel without heat treated thin steel band or claiming that cold-reduced sheet dashes processing; Again the Neilsbed plug-in sheet base substrate is heat-treated after dashing processing; So that Neilsbed plug-in sheet satisfies the hardness requirement when on controlled flat knitting machine, using, otherwise can cause changing frequent because of wearability is fragile.But the Neilsbed plug-in sheet base substrate behind the punch forming is heat-treated shortcoming below the existence at least: distortion after heat treatment can appear in the Neilsbed plug-in sheet base substrate, causes qualification rate low, and loss is big; Because the uniformity to Neilsbed plug-in sheet base substrate thermal effectiveness is difficult to guarantee, therefore in use is prone to produce the fracture damage situation.Soft unique advantage of dashing is the requirement of stamping machine lower.
are undoubted; If with the mode of dashing firmly by stamping machine punch forming Neilsbed plug-in sheet base substrate; So above-mentioned shortcoming just can be eliminated; So-called hard dashing be meant and dash processing again after thin steel band is heat-treated to required hardness, towards the Neilsbed plug-in sheet base substrate that processes can avoid being out of shape, minimizing loss and improve the quality and reduce cost.But to having relatively high expectations of stamping machine.
therefore, how with aforesaid soft dash hold concurrently with the advantage of dashing firmly and become that industry is paid close attention to for a long time and urgent expectation solves and unsolved all the time technical problem.
are except above-mentioned shortcoming; Also there is following shortcoming in Neilsbed plug-in sheet base substrate diel in the prior art: because thin steel band has elasticity and flexibility; Therefore after will approaching steel band by the step-by-step movement feed mechanism and feeding between the upper and lower template; Applying effect between thin steel band and the lower bolster is difficult to guarantee; Arching phenomenon promptly occurs,, cause the flaw of Neilsbed plug-in sheet base substrate and even scrap so tend to influence the punching press effect towards lower bolster during to thin steel band punching press when the protruding punch die of the inserted sheet on the cope match-plate pattern.
In view of above-mentioned prior art, the applicant has done useful design, and the technical scheme that will introduce below produces under this background
Summary of the invention
task of the present invention be to provide a kind of can make be suitable for to the thin steel band before the heat treatment implement the thin steel band punching press after the stamping machine reply heat treatment of punching press and use reduction to the harsh requirement of stamping machine and reduce equipment investment and help avoid by the step-by-step movement feed mechanism be sent to thin steel band between the upper and lower template on lower bolster, occur arching upward phenomenon and use ensure with the whole applying effect of lower bolster to guarantee the Neilsbed plug-in sheet base substrate diel of stamping quality.
task of the present invention is accomplished like this; The diel of a kind of Neilsbed plug-in sheet base substrate; Comprise mold mechanism and match with last mold mechanism and corresponding to the following mold mechanism of the below of last mold mechanism; Last mold mechanism comprise patrix grillage with at least one pair of guide pin bushing, with the patrix grillage towards the fixing cope match-plate pattern of a side of mold mechanism down be fixed on cope match-plate pattern towards the protruding punch die of inserted sheet of a side of mold mechanism down; Following mold mechanism comprise have match with said guide pin bushing and quantity equates and the counterdie grillage of the guide pillar that the position is corresponding and with the counterdie grillage towards a side of last mold mechanism fixing and lower bolster offer the edge of a knife die cavity that matches with the protruding punch die of inserted sheet in position corresponding to the protruding punch die of said inserted sheet; Be characterised in that: the protruding punch die of described inserted sheet is towards an end height of a side of said lower bolster and the other end is low, and the difference in height between a high end to a low end equates with the want thickness of stamping forming Neilsbed plug-in sheet base substrate; The described mold mechanism of going up also includes a holding pad; This holding pad floats towards a side of said lower bolster with said cope match-plate pattern and is connected; On this holding pad and in position, offer the guided mode hole of matching with the protruding punch die of inserted sheet corresponding to the protruding punch die of said inserted sheet; This guided mode hole is corresponding with said edge of a knife die cavity; Towards a side of said cope match-plate pattern and in that each is concaved with one group of spring cavity with the interval state corresponding to the both sides of the length direction in said guided mode hole, be provided with a return spring at holding pad in each spring cavity, and return spring leans out an end and the described cope match-plate pattern of the spring cavity side contacts towards holding pad.
are in a concrete embodiment of the present invention; Each offers one group of first guider screw hole with the interval state in the both sides of the length direction of described holding pad; And offer the second guider screw hole that quantity equates with the first guider screw hole in the both sides of the length direction of described cope match-plate pattern and in position corresponding to the first guider screw hole; Be equipped with a guider screw in each second guider screw hole, guider screw is fixedly connected with the first guider screw hole with moving up and down.
in another concrete embodiment of the present invention, the described first guider screw hole is blind hole or through hole.
technical scheme provided by the invention is higher than the other end because the protruding punch die of inserted sheet is designed to an end towards a side of lower bolster; And the difference in height that between a high end to a low end, forms equals the thickness of the Neilsbed plug-in sheet base substrate of the punching out of wanting; Thereby when the protruding punch die of inserted sheet when the direction of lower bolster is dived; Can produce the shearing effect of scissors mouth to thin steel band; Owing between mould and stamping machine, found rational equalization point, thereby can tackle thin steel band punching press that hardness after Overheating Treatment significantly improved, reduce again and can reduce equipment investment the requirement of stamping machine to guarantee the quality of Neilsbed plug-in sheet base substrate; Owing to be connected with holding pad towards a side of lower bolster with quick condition at lower bolster; Therefore, the protruding punch die of inserted sheet takes the lead in thin steel band being pushed down before touching thin steel band by holding pad; The reliable subsides of thin steel band and lower bolster touched; Avoid occurring arch trend, guaranteed punching out quality the Neilsbed plug-in sheet base substrate.
Description of drawings
Fig. 1 is the embodiments of the invention structure chart.
Fig. 2 is the cutaway view of Fig. 1.
Fig. 3 is the side view of the protruding punch die of inserted sheet.
The sketch map that
Fig. 4 carries out the step-by-step movement punching press for the present invention to thin steel band.
The specific embodiment
can be expressly understood technical spirit of the present invention and beneficial effect more for the auditor that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.
please be referring to Fig. 1 and Fig. 2; Understanding for the ease of the public; The applicant has illustrated that in Fig. 1 stamping machine is the support platform 4 of punch press, and this support platform 4 also can be described as workbench, and stamping machine has been shown in Fig. 2 is the top mold frame holder 5 of punch press.Last mold mechanism 1 is fixed on the top mold frame holder 5, and mold mechanism 2 is fixed on the support platform 4 down.
in the present embodiment; Last mold mechanism 1 comprises patrix grillage 11, cope match-plate pattern 12, the protruding punch die 13 of inserted sheet and holding pad 14; Patrix grillage 11 is fixing with top mold frame holder 5 shown in Figure 2 through the T shape screw slots of offering on it 113; And this patrix grillage 11 towards under a side promptly be fixed with a pair of guide pin bushing 111 towards a following side of mold mechanism 2, this forms angular dependence guide pin bushing 111 each other.Certainly, the quantity of guide pin bushing 111 also can be four, each fixing one in four bights of the patrix grillage 11 of cuboid, therefore can not limit protection scope of the present invention therefrom.Be fixed with upper padding plate 112 at patrix grillage 11 towards a side of lower bolster 12 again.
aforesaid cope match-plate pattern 12 usefulness cope match-plate pattern hold-down screws 122 and patrix grillage 11 towards under a side promptly fix towards a side of mold mechanism 2 down.Each offers one group of second guider screw hole 121 with the interval state in the both sides of the length direction of cope match-plate pattern 12, is furnished with a guider screw 1211 with quick condition in each second guider screw hole 121.
on the cope match-plate pattern 12 and towards under a side promptly fix the protruding punch dies 13 of a pair of inserted sheet with protruding punch die hold-down screw 131 towards a following side of mold mechanism 2, stagger each other in this position to the protruding punch die 13 of inserted sheet.
It both can be that through hole also can be the first guider screw hole 143 of blind hole that the both sides of the length direction of
aforesaid holding pad 14 respectively offer one group with the interval state; The aforesaid second guider screw hole 121 is corresponding with the first guider screw hole 143, and screws in the first guider screw holes 143 and holding pad 14 is connected with cope match-plate pattern 12 with quick condition through guider screw 1211.On holding pad 14 and in the position corresponding to the protruding punch die 13 of aforesaid a pair of inserted sheet, offer a pair of guided mode hole 141, the shape in guided mode hole 141 is consistent with the inserted sheet base substrate.Again, holding pad 14 towards under a side promptly respectively offer the guide bar hole 142 that one group of quantity equates with the quantity of thin steel band guide and limit mechanism 3 with the interval state towards a side of following mold mechanism 2 and in position corresponding to the following thin steel band guide and limit mechanism 3 that also will detail.And; Towards a side of cope match-plate pattern 12 and in that each is concaved with one group of spring cavity 144 with the interval state corresponding to the both sides of the length direction in aforesaid guided mode hole 141, in each spring cavity 144, be provided with usefulness at holding pad 14 so that the return spring 1441 of holding pad 14 returns (towards the direction displacement of descending mold mechanism 2).
are by illustrated in figures 1 and 2; On left end (shown position state) end face of aforesaid cope match-plate pattern 12, be fixed with a fracture cutter 123 with fracture cutter hold-down screw 1231; Useless and thin steel band 6 that be formed with material-dropping hole 61 by behind the intact Neilsbed plug-in sheet base substrate of 123 pairs of punching out of this fracture cutter cuts off, and thin steel band 6 is sent to through the step-by-step movement feed mechanism right-to-left that sets separately.
Fig. 1 and Fig. 2 please be continued to see in
; The following mold mechanism 2 that provides comprises counterdie grillage 21 and lower bolster 22; Counterdie grillage 21 is fixed through supporting base 213 and aforesaid support platform 4; On this counterdie grillage 21 and in position, be fixed with a pair of guide pillar 211 with the diagonal angle state equally corresponding to aforesaid a pair of guide pin bushing 111; Guide pillar 211 matches with the guide pillar hole 1111 of guide pin bushing 111, the relation that the quantity of guide pillar 211 and guide pin bushing 111 maintenances are followed in sb's footsteps, and on guide pillar 211, be equipped with guide pillar spring 2111.
are fixed with a charging conduit 214 below corresponding to counterdie frame plate 21, scoop out the inserted sheet base substrate of punch forming by this charging conduit 214.And be fixed with lower bolster 212 towards a side of lower bolster 22 at counterdie grillage 21.
are by shown in Figure 1; Corresponding to the both sides of aforesaid edge of a knife die cavity 221 and preferably one group of thin steel band guide and limit mechanism 3 respectively is set with the mode of paired cooperation; Each thin steel band guide and limit mechanism 3 is arranged in each thin steel band guide and limit mechanism installing hole 223; And respectively comprise a guide bar 31 and a spring 32, guide bar 31 is placed in the thin steel band guide and limit mechanism installing hole 223 with quick condition, and spring 32 is nested with on guide bar 31; The lower end of this spring 32 is bearing on the flange (spring base) of guide bar 31 bottoms, and the upper end then is bearing on the roof of thin steel band guide and limit mechanism installing hole 223.Because aforesaid guide bar hole 142 is corresponding with guide bar 31, so the end that guide bar 31 is stuck in thin steel band guide and limit mechanism installing hole 223 promptly matches with guide bar hole 142 upper end.By illustrated in figures 1 and 2, constitute a guide groove 311 in guide bar 31 upper ends, the thickness of the width of guide groove 311 and thin steel band 6 adapts.
preferred scheme also can respectively be offered a pair of first guide rod hole 145 and respectively offer a pair of second guide rod hole 224 at the two ends of lower bolster 22 at the two ends of aforesaid holding pad 14, first, second guide rod hole 145,224 corresponds to each other.And the two ends at cope match-plate pattern 12 respectively set pair of guide rods 124, and guide rod 124 matches with first, second guide rod hole 145,224, the aligning when this structure is convenient to Mould Machining and use.
are asked for an interview Fig. 3 and are combined Fig. 1 and Fig. 2; Shown in Figure 3 by this; The protruding punch die 13 of inserted sheet is towards an end height of the length direction of a side of lower bolster shown in Figure 1 22 and the other end is low, and promptly the right-hand member of location status shown in Figure 3 is high, and left end is low; From a high end to a low end promptly between right-hand member to left end formed difference in height equal the thickness of the Neilsbed plug-in sheet base substrate that institute will stamp out just, just equal to approach the thickness of steel band.So;, the thin steel band of the protruding punch die 13 of inserted sheet on lower bolster 22 can embody the scissors effect when diving; To adapt to the thin steel band punching press that the hardness after the heat treatment significantly has been enhanced; Thereby overcome the applicant objectively in the shortcoming described in the background technology hurdle, embodied the technique effect described in the superincumbent technique effect of the applicant hurdle.
see also Fig. 4 and continue to combine Fig. 1 and Fig. 2; Thin steel band 6 right-to-lefts are introduced to lower bolster 22 by step-by-step movement feed mechanism (not shown); And between the guide bar 31 corresponding to configuration in pairs; Avoid sideslip, and then limit, avoid being upturned the guide groove 311 on the guide bar 31.
are under the work of stamping machine at punch press, and the patrix grillage 11 of being gone up mold mechanism 1 by top mold frame holder 5 drives of punch press moves downward, and it is descending to drive cope match-plate patterns 12 by patrix grillage 11 simultaneously; And then it is descending to drive the protruding punch die of inserted sheets 13 by lower bolster 12; In the descending process of the protruding punch die of inserted sheet 13, owing to the effect of return spring 1441 takes the lead in holding pad 14 is pressed and on thin steel band 6, and guide bar 31 at this moment probes into guide bar hole 142; Along with the protruding punch die of inserted sheet 13 gets into guided mode holes 141 and dashes and during thin steel band 6; Return spring 1441 compressions, punch forming goes out the Neilsbed plug-in sheet base substrate under the cooperation of edge of a knife die cavity 221, on thin steel band 6, forms material-dropping hole 61 (Fig. 3 shows); Then patrix grillage 11 is up; Thin simultaneously steel band 6 is sent to a station by step-by-step movement feed mechanism right-to-left again, and the rest may be inferred and implement Neilsbed plug-in sheet base substrate punch forming, and the Neilsbed plug-in sheet base substrate behind the punch forming gets in the charging conduits 214 from edge of a knife die cavity 221.
In sum, technical scheme provided by the invention has overcome the deficiency of prior art, accomplished the invention task, has embodied applicant's alleged technique effect in the technique effect hurdle
Claims (3)
1.
a kind of Neilsbed plug-in sheet base substrate diel; Comprise mold mechanism (1) and match with last mold mechanism (1) and corresponding to the following mold mechanism (2) of the below of last mold mechanism (1); Last mold mechanism (1) comprise patrix grillage (11) with at least one pair of guide pin bushing (111), with patrix grillage (11) towards the fixing cope match-plate pattern (12) of a side of mold mechanism (2) down be fixed on the inserted sheet protruding punch die (13) of cope match-plate pattern (12) towards a side of descending mold mechanism (2); Following mold mechanism (2) comprise have match with said guide pin bushing (111) and quantity equates and the counterdie grillage (21) of the guide pillar (211) that the position is corresponding and with counterdie grillage (21) towards a side of last mold mechanism (1) fixing and lower bolster (22) offer the edge of a knife die cavity (221) that matches with the protruding punch die of inserted sheet (13) in position corresponding to the protruding punch die of said inserted sheet (13); It is characterized in that: the protruding punch die of described inserted sheet (13) is towards an end height of a side of said lower bolster (22) and the other end is low, and the difference in height between a high end to a low end equates with the want thickness of stamping forming Neilsbed plug-in sheet base substrate; The described mold mechanism (1) of going up also includes a holding pad (14); This holding pad (14) and said cope match-plate pattern (12) float towards a side of said lower bolster (22) and are connected, and on this holding pad (14) and in the position corresponding to the protruding punch die of said inserted sheet (13), offer the guided mode hole (141) of matching with the protruding punch die of inserted sheet (13); This guided mode hole (141) is corresponding with said edge of a knife die cavity (221); At holding pad (14) towards a side of said cope match-plate pattern (12) and in that each is concaved with one group of spring cavity (144) with the interval state corresponding to the both sides of the length direction in said guided mode hole (141); Be provided with a return spring (1441) in each spring cavity (144), and return spring (1441) leans out an end and the described cope match-plate pattern (12) of spring cavity (144) side contacts towards holding pad (14).
2.
Neilsbed plug-in sheet base substrate according to claim 1 diel; It is characterized in that each offers one group of first guider screw hole (143) with the interval state in the both sides of the length direction of described holding pad (14); And offer the second guider screw hole (121) that quantity equates with the first guider screw hole (143) in the both sides of the length direction of described cope match-plate pattern (12) and in position corresponding to the first guider screw hole (143); Be equipped with a guider screw (1211) in each second guider screw hole (121), guider screw (1211) is fixedly connected with the first guider screw hole (143) with moving up and down.
3.
Neilsbed plug-in sheet base substrate according to claim 2 diel is characterized in that the described first guider screw hole (143) is blind hole or through hole
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101756784A CN102699199A (en) | 2012-05-31 | 2012-05-31 | Stamping mold of needle bed insert sheet green body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101756784A CN102699199A (en) | 2012-05-31 | 2012-05-31 | Stamping mold of needle bed insert sheet green body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102699199A true CN102699199A (en) | 2012-10-03 |
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ID=46892417
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101756784A Pending CN102699199A (en) | 2012-05-31 | 2012-05-31 | Stamping mold of needle bed insert sheet green body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102699199A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05277578A (en) * | 1991-03-25 | 1993-10-26 | Hitachi Cable Ltd | Precise punching die |
| CN201271706Y (en) * | 2008-09-27 | 2009-07-15 | 浙江吉利汽车有限公司 | Convex hull sequence for car radiator center support stamping mould |
| CN201442059U (en) * | 2008-12-22 | 2010-04-28 | 上海理工大学 | Special mold base for small hole stamping of metal ultra-thin plate |
| CN201823813U (en) * | 2010-09-25 | 2011-05-11 | 成都市龙泉通惠实业有限责任公司 | Punch forming mould |
| CN202239292U (en) * | 2011-10-26 | 2012-05-30 | 昆山宝锦激光拼焊有限公司 | Punching mold for demolding conveniently after cutting and right angle bending of sheet metal component |
-
2012
- 2012-05-31 CN CN2012101756784A patent/CN102699199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05277578A (en) * | 1991-03-25 | 1993-10-26 | Hitachi Cable Ltd | Precise punching die |
| CN201271706Y (en) * | 2008-09-27 | 2009-07-15 | 浙江吉利汽车有限公司 | Convex hull sequence for car radiator center support stamping mould |
| CN201442059U (en) * | 2008-12-22 | 2010-04-28 | 上海理工大学 | Special mold base for small hole stamping of metal ultra-thin plate |
| CN201823813U (en) * | 2010-09-25 | 2011-05-11 | 成都市龙泉通惠实业有限责任公司 | Punch forming mould |
| CN202239292U (en) * | 2011-10-26 | 2012-05-30 | 昆山宝锦激光拼焊有限公司 | Punching mold for demolding conveniently after cutting and right angle bending of sheet metal component |
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Application publication date: 20121003 |