CN109500256A - Molding die knock-out mechanism and stamping die - Google Patents
Molding die knock-out mechanism and stamping die Download PDFInfo
- Publication number
- CN109500256A CN109500256A CN201910018556.6A CN201910018556A CN109500256A CN 109500256 A CN109500256 A CN 109500256A CN 201910018556 A CN201910018556 A CN 201910018556A CN 109500256 A CN109500256 A CN 109500256A
- Authority
- CN
- China
- Prior art keywords
- component
- out mechanism
- support component
- dnockout
- molding die
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- 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.)
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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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/06—Stripping-off devices
- B21D45/08—Stripping-off devices interrelated with motion of tool
Abstract
The present invention provides a kind of molding die knock-out mechanism and stamping dies, it is related to stamping equipment technical field, molding die knock-out mechanism provided by the invention includes: support component, dnockout component and elastic parts, dnockout component and elastic parts are set to support component, support component for driving dnockout component to move to the direction close to part under the effect of external force, and dnockout component is for hitting the part on mold down；When dnockout component and feature contacts, elastic parts is used to that support component and dnockout component to be made to have the trend moved to the direction far from part.Molding die knock-out mechanism provided by the invention alleviates the technical issues of flowing and vibration of knock-out mechanism in the related technology made bar always and influence with web contact during plate forming.
Description
Technical field
The present invention relates to stamping equipment technical fields, more particularly, to a kind of molding die knock-out mechanism and stamping die.
Background technique
The automobile bridge shell pieces part of cold punching technology production, for material thickness generally in 5mm-12mm, part generally passes through press-moulding die
Tool realizes molding.This material thickness is thicker and realizes molding part by process for cold stamping shaping, in punching production, often deposits
The case where part wraps mould and card upper mold, such case is not allow to occur during punching production.Therefore it needs
Knock-out mechanism is arranged in upper mold, and after forming parts, filling device driving knock-out mechanism hits part down on press machine, avoids the occurrence of zero
Part wraps the case where mould and card upper mold.
In the related technology, after filling device cancels the active force of knock-out mechanism on press machine, knock-out mechanism makes bar
Always with web contact, flowing and vibration during plate forming are not only influenced, the boundary line after causing forming parts is unstable
It is fixed, defective products is generated, and be easy to leave impression on part after forming, influences accessory appearance and generate more defective products.
Summary of the invention
First aspect present invention provides a kind of molding die knock-out mechanism, makes bar to alleviate knock-out mechanism in the related technology
Always with the flowing and vibration during web contact influence plate forming the technical issues of.
Molding die knock-out mechanism provided by the invention includes: support component, dnockout component and elastic parts, the dnockout
Component and the elastic parts are set to the support component, and the support component for driving described beat under the effect of external force
Material component is moved to the direction close to part, and the dnockout component is for hitting the part on mold down；
When the dnockout component and when the feature contacts, the elastic parts is for making the support component and described beating
Material component has the trend moved to the direction far from the part.
Further, the dnockout component includes knockout rod, and the knockout rod is installed on the support component.
Further, the quantity of the knockout rod is more, and the more knockout rods are parallel to each other and are spaced setting, multiple
The knockout rod is mounted on the support component.
Further, the elastic parts includes nitrogen gas spring, and the nitrogen gas spring and the dnockout component are installed on institute
State the same side of support component.
Further, the quantity of the nitrogen gas spring is multiple, and multiple nitrogen gas springs are parallel to each other and are spaced setting,
Multiple nitrogen gas springs are mounted on the support component.
Further, the elastic parts includes jacking block, and the quantity of the jacking block is identical as the quantity of the nitrogen gas spring,
Multiple jacking blocks cooperate correspondingly with multiple nitrogen gas springs；
When the dnockout component and the feature contacts, the nitrogen gas spring is contacted with the corresponding jacking block.
Further, the support component includes push plate, and the dnockout component and the elastic parts are set to described push away
Plate.
Further, the push plate is equipped with guide plate, and the guide plate is used to be slidably matched with the guide groove of external structure.
Further, the molding die knock-out mechanism includes limit assembly, and the limit assembly is set to the support group
The side of part, the limit assembly are used to limit the moving range of the support component.
Second aspect of the present invention provides a kind of stamping equipment, with alleviate in the related technology knock-out mechanism beat bar always with plate
Material contacts the technical issues of flowing and vibration during influencing plate forming.
Stamping die provided by the invention includes: upper die component, lower mold assemblies and above-mentioned molding die knock-out mechanism, institute
It states upper die component to be oppositely arranged with the lower mold assemblies, the molding die knock-out mechanism is flexibly connected with the upper die component.
Molding die knock-out mechanism provided by the invention and stamping die, molding die knock-out mechanism include: support component,
Dnockout component and elastic parts, dnockout component and elastic parts are set to support component, and support component is used for the effect in external force
Lower that dnockout component is driven to move to the direction close to part, dnockout component is for hitting the part on mold down；When dnockout component
When with feature contacts, elastic parts is used to that support component and dnockout component to be made to have the trend moved to the direction far from part.
Molding die knock-out mechanism provided by the invention can be installed on the upper mold group of stamping die instead of knock-out mechanism in the related technology
Part, during forming parts, shaping grinding apparatus knock-out mechanism is located at the top of upper mold, avoid in forming process with feature contacts, zero
After part molding, filling device driving support component drives dnockout component to move to the direction close to part on press machine, dnockout group
Part hits down the part being stuck in upper mold down.When support component drives dnockout component to move to the direction close to part, elastic group
Part generates flexible deformation, after filling device cancels the active force of support component on press machine, in elastic parts restoring force
Under effect, support component drives dnockout component to move to the direction far from part, automatic to restore to original position, prevents to next plate
Material carries out dnockout component and web contact when punching press, reduces influence of the plate forming in the process to plate flowing and vibration, in addition,
It prevents from causing the boundary line after forming parts unstable, is easy to leave impression on part after generating defective products, and molding, shadow
It rings accessory appearance and generates more defective products.
Detailed description of the invention
Technical solution in order to illustrate more clearly of the specific embodiment of the invention or in the related technology, below will be to specific
Attached drawing needed in embodiment or description of Related Art is briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of molding die knock-out mechanism provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of the first working condition of stamping die provided in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of the second working condition of stamping die provided in an embodiment of the present invention.
Icon: 110- push plate；The first guide plate of 111-；The second guide plate of 112-；120- makes bar；The first knockout rod of 210-；
The second knockout rod of 220-；230- third knockout rod；310- nitrogen gas spring；320- jacking block；410- limited post；420- limit
Screw；500- upper die component；510- upper mold；520- upper die forming insert；610- lower die.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Molding die knock-out mechanism provided in an embodiment of the present invention includes: support component, dnockout component and elastic parts, is beaten
Material component and elastic parts are set to support component, and support component for driving dnockout component to close to zero under the effect of external force
The direction of part moves, and dnockout component is for hitting the part on mold down；When dnockout component and feature contacts, elastic parts is used
In the trend for making support component and dnockout component that there is the direction to separate part to move.
Dnockout component includes dnockout block or knockout rod etc., and in the present embodiment, dnockout component includes knockout rod, knockout rod installation
In support component.
Specifically, knockout rod is fixedly installed in the side of support component, the installation of bar 120 is played in filling device on press machine
In the other side of support component, knockout rod can be slidably matched with the upper die component 500 in stamping die.Filling device on press machine
Support component and knockout rod is driven to move downward by making bar 120, knockout rod hits the part being stuck in upper mold 510 down, pressure
After filling device cancels the active force of support component on machine, the elastic parts for generating flexible deformation makes support component drive dnockout
Bar is moved to the direction far from part, and knockout rod is avoided with feature contacts, to prevent from beating when carrying out punching press to next plate always
Expect bar and web contact, reduces influence of the plate forming in the process to plate flowing and vibration.Support component includes knockout rod, is led to
It crosses knockout rod to hit the part in upper mold 510 down, facilitates operation.
Further, the quantity of knockout rod is more, and more knockout rods are parallel to each other and are spaced setting, and multiple knockout rods are equal
It is installed on support component.
The quantity of knockout rod can be two, three or four etc., in the present embodiment, and the quantity of knockout rod is three, three
Knockout rod is respectively the first knockout rod 210, the second knockout rod 220 and third knockout rod 230.As shown in Figure 1, the first knockout rod
210, the second knockout rod 220 and third knockout rod 230 are parallel to each other and are spaced setting, and the first knockout rod 210 is fixedly installed in branch
The first end of support component, the second knockout rod 220 are fixedly installed in the middle part of support component, and third knockout rod 230 is fixedly installed in
The second end of support component.Support component drives the first knockout rod 210, the second knockout rod 220 and third knockout rod 230 to close
When the direction movement of part when hitting part down, the first end in contact of the first knockout rod 210 and part, the second knockout rod 220 with
The middle part of part contacts, the second end in contact of third knockout rod 230 and part, the first knockout rod 210,220 and of the second knockout rod
The cooperation of third knockout rod 230 generates active force to part and hits part down.Make the quantity of knockout rod more, more knockout rods are matched
It closes and active force is generated to part, keep part stress uniform, part is avoided to generate clamping stagnation during being hit down.
In some embodiments, elastic parts includes helical spring, and helical spring is set to the upside of support component, support group
When part drives knockout rod to move to the direction close to part, helical spring is stretched, alternatively, helical spring is set to support component
Downside, when support component drives knockout rod to move to the direction close to part, helical spring is compressed.Filling device on press machine
After cancelling to the active force of support component, support component drives knockout rod to far from part under the action of helical spring restoring force
Direction movement, prevent the knockout rod and web contact when carrying out punching press to next plate, reduce during plate forming to plate
The influence of material flowing and vibration.
In another embodiment, elastic parts includes nitrogen gas spring 310, and nitrogen gas spring 310 and dnockout component are installed on branch
The same side of support component.
As shown in Figure 1, nitrogen gas spring 310 is arranged along the vertical direction, and it is located at the downside of support component, nitrogen gas spring 310
The side wall of inflatable chamber be fixedly connected with support component, the motion bar of nitrogen gas spring 310 be located at inflatable chamber away from support component
Side.When knockout rod and feature contacts, nitrogen gas spring 310 is compressed, effect of the filling device to support component on press machine
After power is cancelled, nitrogen gas spring 310 drives support component that knockout rod is driven to move to the direction far from part.Nitrogen gas spring 310 has
Have small in size, elastic force is big, stroke is long, stable working, manufacture precision, long service life, spring curve gently and do not need pre-
The advantages that tight.
Further, the quantity of nitrogen gas spring 310 is multiple, and multiple nitrogen gas springs 310 are parallel to each other and are spaced setting, more
A nitrogen gas spring 310 is mounted on support component.
Specifically, the quantity of nitrogen gas spring 310 can be three, four or five etc., in the present embodiment, nitrogen gas spring 310
Quantity be four.Connect as shown in Figure 1, four nitrogen gas springs 310 are respectively positioned on the lower section of support component and fix with support component
It connects, two of them nitrogen gas spring 310 is between the first knockout rod 210 and the second knockout rod 220, other two nitrogen gas spring
310 between the second knockout rod 220 and third knockout rod 230.Filling device cancels the active force of support component on press
Afterwards, four nitrogen gas springs 310 for being in compressive state generate active force to support component simultaneously, and support component is made to drive first
Knockout rod 210, the second knockout rod 220 and third knockout rod 230 are moved to the direction far from part.Four nitrogen gas springs 310 are matched
Active force is generated to the different parts of support component when contract, improves the stability of support component movement.
Further, elastic parts includes jacking block 320, and the quantity of jacking block 320 is identical as the quantity of nitrogen gas spring 310, more
A jacking block 320 and multiple cooperations correspondingly of nitrogen gas spring 310；When dnockout component and when feature contacts, nitrogen gas spring 310 with
Corresponding jacking block 320 contacts.
As shown in Figure 1, the quantity of jacking block 320 is four, four jacking blocks 320 are set relatively one by one with four nitrogen gas springs 310
It sets, jacking block 320 is located at the lower section of nitrogen gas spring 310.Four jacking blocks 320 can be fixedly installed in the upper die component of stamping die
500, when support component drives nitrogen gas spring 310 to move downward, nitrogen gas spring 310 is abutted with corresponding jacking block 320, is avoided to upper
Membrane module 500 damages.
Further, support component includes push plate 110, and dnockout component and elastic parts are set to push plate 110.
The horizontal cross-section of push plate 110 is rectangle, and multiple knockout rods and multiple nitrogen gas springs 310 are along the length of push plate 110
Degree direction is spaced apart, and is fixedly connected with the lower end surface of push plate 110.The quantity for making bar 120 is more, and more are beaten 120 edge of bar
The length direction of push plate 110 is spaced apart, and is fixedly connected with the upper surface of push plate 110.Filling device is by beating on press machine
Bar 120 drives push plate 110 to move downward, and push plate 110 drives more knockout rods to move downward and hits part down.
Further, push plate 110 is equipped with guide plate, and guide plate is used to be slidably matched with the guide groove of external structure.
As shown in Figure 1, the first guide plate 111 is fixedly installed on the side of the left and right of push plate 110 two, before push plate 110
The both ends of side are fixedly installed with the second guide plate 112.When push plate 110 is installed on upper die component 500, the first guide plate 111
It is slidably matched with the first limiting slot on upper die component 500, the second guide plate 112 is slided with the second limiting slot on upper die component 500
Cooperation, when push plate 110 is moved to the direction close to or far from part, the first guide plate 111 and the cooperation of the first limiting slot are to push plate 110
Front and back limit is carried out, the second guide plate 112 and the cooperation of the second limiting slot carry out left and right limit to push plate 110, improve push plate 110 and move
Stability.
Further, molding die knock-out mechanism includes limit assembly, and limit assembly is set to the side of support component, limit
Component is used to limit the moving range of support component.
Specifically, limit assembly includes limited post 410 and stop screw 420.The quantity of limited post 410 is two, two
Limited post 410 is respectively positioned on the lower section of push plate 110 and is arranged along the vertical direction, and two limited posts 410 are mountable to upper die component
500.The quantity of stop screw 420 is three, is set in push plate 110 there are three the limiting through hole extended along the vertical direction, three limit
Position through-hole is spaced apart along the length direction of push plate 110, and a stop screw 420 is connected in each limiting through hole,
The diameter of limiting through hole is greater than the diameter of corresponding stop screw 420.Limiting through hole is stretched out in the lower end of stop screw 420, and can
It is connect with upper die component 500.Push plate 110 moves downward, when the lower end surface of push plate 110 and limited post 410 contact, limited post 410
It prevents push plate 110 from continuing to move downward, the lower limit movement position of push plate 110 is limited by limited post 410.In push plate 110 relatively
Membrane module 500 moves upwards, when the nut on the upper surface and screw of push plate 110 contacts, the anti-thrust plate 110 of screw and upper mold group
Part 500 falls off.
Second aspect of the embodiment of the present invention provides a kind of stamping die, is begun with alleviating the bar of beating of knock-out mechanism in the related technology
Eventually with the flowing and vibration during web contact influence plate forming the technical issues of.
Stamping die provided in an embodiment of the present invention includes: that upper die component 500, lower mold assemblies and above-mentioned molding die are beaten
Expect mechanism, upper die component 500 is oppositely arranged with lower mold assemblies, and molding die knock-out mechanism is flexibly connected with upper die component 500.Tool
Body, upper die component 500 includes upper mold 510 and the upper die forming insert 520 for being fixedly installed in upper mold 510, and lower mold assemblies include
With the lower die 610 of the cooperation of shaped insert above.As shown in Figures 2 and 3, push plate 110 is located in the cavity of upper mold 510, and first dozen
Material bar 210, the second knockout rod 220 and third knockout rod 230 are arranged along the vertical direction, and inlay with upper mold 510 and upper die forming
Block 520 is slidably matched.Nitrogen gas spring 310 is located at the lower section of push plate 110, and limited post 410 is located at the lower section of push plate 110, and installs
In upper mold 510, stop screw 420 passes through push plate 110 from the top of push plate 110, and is threadedly engaged with upper mold 510.
Molding die knock-out mechanism and the process of upper die component 500 and lower mold assemblies cooperating are divided into: cold stamping axle housing
After sheetmolding mould forming parts, it is opened dnockout process:
As shown in Fig. 2, filling device starts work on press machine, downward power will be generated, making bar 120 will be on press machine
The downward power transmitting of filling device is applied to push plate 110, moves downward push plate 110,110 compressed nitrogen spring 310 of push plate, together
When the first knockout rod 210, the second knockout rod 220 and third knockout rod 230 moved downwardly together with push plate 110, contact moudling
Part afterwards hits downwards part after molding down.
After cold stamping axle housing sheetmolding mould forming parts, after being opened dnockout, filling device automated backhaul process:
Filling device stops working on press machine, no longer generates downward power, and included bar 120 of beating loses downward move
Power, push plate 110 also lose downward power therewith, and the pressure that 310 confined state of nitrogen gas spring is formed at this time starts to discharge, will
Upward reaction force is generated, while upward active force is passed into push plate 110, push plate 110 moves upwards, and push plate 110 is again
To push it is included make bar 120 and move upwards, as shown in figure 3, included make bar 120 and will transport upwards filling device on promotion press machine
It is dynamic to reset.
After cold stamping axle housing sheetmolding mould forming parts, die sinking dnockout is finished, and after filling device automated backhaul, under placement
A piece of plate carries out die mould.At this point, the backhaul of molding die knock-out mechanism, plate are placed in lower die 610, are formed,
In entire forming process, filling device is in stop working state on press machine, and non-dnockout will be in by forming knock-out mechanism of receiving the award
State, knockout rod will not be contacted with plate, until die sinking, then filling device starts work on press machine after molding, from
Dynamic filling device carries out dnockout, and after dnockout, filling device stops working on press machine, filling device automated backhaul, again
It is put into plate, starts to form.
Molding die knock-out mechanism provided in an embodiment of the present invention and stamping die, molding die knock-out mechanism include: branch
Support component, dnockout component and elastic parts, dnockout component and elastic parts are set to support component, and support component is used in external force
Under the action of drive dnockout component move to close to the direction of part, dnockout component is used to hit down the part on mold；When beating
When expecting component and feature contacts, elastic parts is used to make support component and dnockout component that there is the direction to separate part to move
Trend.Molding die knock-out mechanism provided in an embodiment of the present invention can replace knock-out mechanism to be in the related technology installed on stamping die
The upper die component 500 of tool, after forming parts, filling device driving support component drives dnockout component to close to part on press machine
Direction movement, dnockout component hits down the part being stuck in upper mold 510 down.Support component drives dnockout component to close to part
Direction movement when, elastic parts generates flexible deformation, after filling device cancels the active force of support component on press machine,
Under the action of elastic parts restoring force, support component drives dnockout component to move to the direction far from part, prevents under
One plate carries out dnockout component and web contact when punching press, reduces influence of the plate forming in the process to plate flowing and vibration,
In addition, preventing from causing the boundary line after forming parts unstable, it is easy to leave pressure on part after generating defective products, and molding
Trace influences accessory appearance and generates more defective products.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of molding die knock-out mechanism characterized by comprising support component, dnockout component and elastic parts, it is described to beat
Material component and the elastic parts are set to the support component, and the support component is for described in drive under the effect of external force
Dnockout component is moved to the direction close to part, and the dnockout component is for hitting the part on mold down；
When the dnockout component and the feature contacts, the elastic parts is for making the support component and the dnockout group
Part has the trend moved to the direction far from the part.
2. molding die knock-out mechanism according to claim 1, which is characterized in that the dnockout component includes knockout rod,
The knockout rod is installed on the support component.
3. molding die knock-out mechanism according to claim 2, which is characterized in that the quantity of the knockout rod is more,
The more knockout rods are parallel to each other and are spaced setting, and multiple knockout rods are mounted on the support component.
4. molding die knock-out mechanism according to claim 1, which is characterized in that the elastic parts includes nitrogen bullet
Spring, the nitrogen gas spring and the dnockout component are installed on the same side of the support component.
5. molding die knock-out mechanism according to claim 4, which is characterized in that the quantity of the nitrogen gas spring is more
A, multiple nitrogen gas springs are parallel to each other and are spaced setting, and multiple nitrogen gas springs are mounted on the support component.
6. molding die knock-out mechanism according to claim 5, which is characterized in that the elastic parts includes jacking block, institute
The quantity for stating jacking block is identical as the quantity of the nitrogen gas spring, and multiple jacking blocks and multiple nitrogen gas springs are one-to-one
Cooperation；
When the dnockout component and the feature contacts, the nitrogen gas spring is contacted with the corresponding jacking block.
7. molding die knock-out mechanism according to claim 1, which is characterized in that the support component includes push plate, institute
It states dnockout component and the elastic parts is set to the push plate.
8. molding die knock-out mechanism according to claim 7, which is characterized in that the push plate is equipped with guide plate, described
Guide plate is used to be slidably matched with the guide groove of external structure.
9. molding die knock-out mechanism according to claim 1, which is characterized in that the molding die knock-out mechanism includes
Limit assembly, the limit assembly are set to the side of the support component, and the limit assembly is for limiting the support component
Moving range.
10. a kind of stamping die characterized by comprising described in upper die component, lower mold assemblies and claim any one of 1-9
Molding die knock-out mechanism, the upper die component is oppositely arranged with the lower mold assemblies, the molding die knock-out mechanism with
The upper die component is flexibly connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910018556.6A CN109500256A (en) | 2019-01-08 | 2019-01-08 | Molding die knock-out mechanism and stamping die |
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| CN201910018556.6A CN109500256A (en) | 2019-01-08 | 2019-01-08 | Molding die knock-out mechanism and stamping die |
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| CN108637092A (en) * | 2018-04-28 | 2018-10-12 | 张新 | A kind of red stamping die and forming method |
| CN108637091A (en) * | 2018-04-28 | 2018-10-12 | 张新 | The multidirectional red stamping die of one kind and forming method |
| CN209520267U (en) * | 2019-01-08 | 2019-10-22 | 山东小鸭精工机械有限公司 | Molding die knock-out mechanism and stamping die |
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