CN205615032U - Main transfer machinery for punch press with cam auxiliary driving - Google Patents
Main transfer machinery for punch press with cam auxiliary driving Download PDFInfo
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- CN205615032U CN205615032U CN201620437850.2U CN201620437850U CN205615032U CN 205615032 U CN205615032 U CN 205615032U CN 201620437850 U CN201620437850 U CN 201620437850U CN 205615032 U CN205615032 U CN 205615032U
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- auxiliary driving
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- punch press
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- 239000000463 material Substances 0.000 claims description 13
- 230000001360 synchronised Effects 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 230000002093 peripheral Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 abstract description 9
- 238000004080 punching Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000011068 load Methods 0.000 description 7
- 230000000750 progressive Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000001503 Joints Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
Abstract
The utility model discloses a main transfer machinery for punch press with cam auxiliary driving, it gets ready and puts to increase speed adjusting including punching device and reinforcement, punching device is including the vertical slider that slides of ability, the reinforcement increases speed adjusting and gets ready and put including crank link mechanism, swing span and cam mechanism, the swing span sets up between crank link mechanism and cam mechanism, and the swing span is articulated mutually with slider, crank link mechanism and cam mechanism respectively, crank link mechanism includes crank and connecting rod, cam group contains at least one cam disc, and the outline line of cam disc can constitute the cam auxiliary driving with the top cooperation of ejector pin. After adopting above -mentioned structure, crank link mechanism and cam mechanism move simultaneously, can synthesize complicated and diversified slider movement characteristic curve, and it is flexible greatly to have expanded processing. Every cam disc homoenergetic setting is different profile curves, and the reinforcement characteristic and the acceleration rate characteristic of mechanism are easily controlled, can also switch over the cam disc, can expand out many more kinds type machining mode.
Description
Technical field
This utility model relates to a kind of NC turret punch machine, a kind of punch press main transmission with cam auxiliary driving
Mechanism.
Background technology
NC turret punch machine is the important equipment of sheet metal manufacture field, rotating tower punch moving according to its main drive gear
Power Source Type can be divided into mechanical type, fluid pressure type and full electric servo formula three types.Owing to full electric servo formula punch press has speed
Hurry up, the outstanding advantages such as precision height, energy-saving and environmental protection, slide block movement curve are controlled, the most progressively replace traditional mechanical type and liquid
Pressure type structure, becomes the main product of industry.
Existing full electric servo formula NC turret punch machine technology can be divided into crank block type, toggle link according to the type of mechanism
The various mechanism forms such as formula.But these mechanism forms are divided into two big classes:
One, single motor-driven planar linkage mechanism form is used
Current existing list motor-driven planar linkage mechanism form, is primarily present following deficiency:
1, flexible poor: the kinematics characteristic of mechanism is non-adjustable with mechanical characteristic, and i.e. the reinforcement characteristic of mechanism, progressive performance are all
Being fixing, it is impossible to dynamically adjust according to the thickness of slab of stamping-out and the size of blanking pressure, when causing Smaller load, stamping-out speed is not
Hurry up, during stamping-out, blanking pressure is little at a slow speed.
2, the spring bearing load of bent axle is excessive, and whole stamping-out load all acts on the spring bearing of bent axle, easily
Cause the damage of this bearing.
3, big stroke, constant force cooked mode can not be realized, it is impossible to the processing and forming such as finishing drawing.
Two, the two-degree-of-freedom plane linkage of Dual-motors Driving is used
Current existing two-degree-of-freedom combination drive mechanical servo press, essentially nonlinearity mechanism, it increases
Power is affected by many factors with progressive performance, controls parameter extraction difficulty, and controllability is poor.It addition, along with punch
The change of curve, the utilization rate of power of motor also can change, it is impossible to ensure motor under each operating mode all at full capacity
Work, causes power dissipation.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and provides one to have cam
The punch press main drive gear of auxiliary driving, this numerical control press main drive gear has multiple cooked mode, can be according to the thickness of sheet material
The size of degree and blanking pressure dynamically adjusts.Big blanking pressure uses low-speed heave-load pattern, and little blanking pressure uses fast mode.Machine
The reinforcement characteristic of structure is good with progressive performance controllability, and can be applicable at a high speed, the application scenario of heavy duty.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of punch press main drive gear with cam auxiliary driving, including blanking apparatus and power speedup adjusting apparatus.
Blanking apparatus includes the slide block of the vertical sliding of energy.
Power speedup adjusting apparatus includes toggle, swing span and cam mechanism；Swing span is arranged on crank even
Between linkage and cam mechanism, and swing span is hinged with slide block, toggle and cam mechanism respectively.
Toggle includes crank and connecting rod, and one end of connecting rod is hinged with the rotary shaft of crank, another of connecting rod
End is hinged with swing span.
Cam mechanism includes camshaft, cam set, cam driving gear and push rod；The bottom of push rod directly or indirectly and is put
Moving frame is hinged；.
Camshaft can rotate under the driving effect of cam driving gear.
The contour line of cam disc can coordinate composition cam auxiliary driving with the top of push rod.
Cam mechanism also includes cam changeover mechanism；Cam set includes at least two cam disc, is just between cam disc
Property connect；Cam set coaxial package is on camshaft；Cam set can be under the effect of cam changeover mechanism, along the axle of camshaft
To carrying out sliding and locking；When cam set locks mutually with camshaft, cam set can be along with camshaft synchronous axial system.
It is provided with between adjacent two cam discs and stirs gap；Cam changeover mechanism includes leading screw, switch motor and shift fork；
Switch motor can drive screw turns, and one end of shift fork is connected with threads of lead screw, and the other end of shift fork stretches between any one stirs
In gap.
Cam changeover mechanism also includes paralleling the guide rod of setting with camshaft, and this guide rod is slidably connected with shift fork.
Being provided with four draw-in grooves on the outer peripheral face of cam disc, each draw-in groove all can fasten, between draw-in groove with the top of push rod
Use curved transition, adjacent two draw-in grooves in radial direction angle be 90 °；Four corresponding four cooked modes of draw-in groove.
When push rod fastens with the draw-in groove being positioned at directly over push rod in cam disc, it is possible to realize the tune of push rod height
Whole, and then when punch. contact sheet material, the adjustment of angle between crank and connecting rod, i.e. different force characteristics and different speedup can be realized
The adjustment of characteristic, adapts to the change of different stamping-out thickness of slab simultaneously.
When punch. contact sheet material, between crank and connecting rod in sharp clevis angle the biggest, power is the least, and speedup is the biggest,
When crank and connecting rod are perpendicular, speedup is maximum, and stamping-out is fastest；Between crank and connecting rod in sharp clevis angle the least,
Power is the biggest, and speedup is the least.
The contour line of cam disc is SPL, and SPL is formed by 6 interpolation point matchings, the footpath between each interpolation point
Identical to increment, pressure angle is identical.
When cam disc uniform rotation, push rod energy uniform motion, it is achieved big stroke constant force cooked mode.
Cam driving gear includes camshaft actuated motor, synchronous pulley and Timing Belt；Camshaft actuated motor is by same
Step belt wheel is connected with camshaft with Timing Belt.
After this utility model uses said structure, have the advantages that
1, Flexible Manufacture: the kinematics characteristic of mechanism is adjustable with mechanical characteristic, can be according to the thickness of sheet material and blanking pressure
Size dynamically adjusts.Big blanking pressure uses low-speed heave-load pattern, and little blanking pressure uses fast mode.At same motor power
In the case of, it is possible to realize higher stamping-out speed and blanking pressure.
2, blanking pressure is born jointly by the spring bearing of bent axle and the spring bearing of cam disc, and the load of spring bearing is obvious
Reduce, it is possible to increase the service life of spring bearing.
3, there is constant force output mode, be suitable for processing and forming pattern.
4, toggle and cam mechanism action simultaneously, can synthesize complicated and diversified slide block movement characteristic curve, pole
Extend greatly processing flexibility.
5, being provided with multiple cam disc in cam set, each cam disc all can be arranged in different contour curves, mechanism
Reinforcement characteristic is easily controllable with progressive performance, moreover it is possible to switch over cam disc, it is possible to expand out a greater variety of cooked mode.
Accompanying drawing explanation
Fig. 1 shows the structural representation of a kind of punch press main drive gear with cam auxiliary driving of this utility model.
Fig. 2 shows the principle schematic of a kind of punch press main drive gear with cam auxiliary driving of this utility model.
Fig. 3 shows that the local, side of a kind of punch press main drive gear with cam auxiliary driving of this utility model regards
Figure.
Fig. 4 shows that the local, front of a kind of punch press main drive gear with cam auxiliary driving of this utility model regards
Figure.
Fig. 5 shows the structural representation of this utility model cam switching mechanism.
Fig. 6 shows the structural representation of this utility model convexity the first embodiment of wheel disc.
Fig. 7 shows the structural representation of this utility model convexity wheel disc the second embodiment.
Fig. 8 shows the analysis view of Fig. 7 cam dish contour curve.
Fig. 9 shows the principle schematic containing swing span the second embodiment.
Figure 10 shows the principle schematic containing the third embodiment of swing span.
Figure 11 shows principle schematic when total travel stamping-out pattern lower crank linkage is positioned at lower limit position.
Figure 12 shows principle schematic when total travel stamping-out pattern lower crank linkage is positioned at upper extreme position.
Figure 13 shows that thickness of slab is high speed blanking pattern during t1.
Figure 14 shows heavily loaded stamping-out pattern when thickness of slab is t1.
Figure 15 shows big stroke constant force cooked mode when cam disc uses the second embodiment.
Wherein have: 1. frame；21. slide blocks；31. cranks；311. crank drive motor；32. connecting rods；4. swing span；51. is convex
Wheel shaft；52. cam set；521. cam disc；522. draw-in groove；523. stir gap；53. cam driving gears；531. camshafts drive
Galvanic electricity machine；532. synchronous pulley；533. Timing Belt；54. cam changeover mechanism；541. switch motor；542. guide rod；543. silk
Thick stick；544. shift fork；55. push rods；56. support bars.
Detailed description of the invention
With concrete better embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3, a kind of punch press main drive gear with cam auxiliary driving, including frame 1, punching
Cut out device and power speedup adjusting apparatus.
Blanking apparatus includes the slide block 21 of the vertical sliding of energy.
Being provided with slider guide portion in frame, slide block can carry out upper and lower sliding along slider guide portion.
Power speedup adjusting apparatus includes toggle, swing span 4 and cam mechanism.
Swing span is arranged between toggle and cam mechanism, and swing span respectively with slide block, crank connecting link machine
Structure and cam mechanism are hinged.
The version of swing span can be various, preferably has a following preferred embodiment:
The first embodiment
As depicted in figs. 1 and 2, swing span is L-shaped, the most advanced and sophisticated turning of L-type swing span upward, and this turning, tip and slide block
Top be hinged.One of them free end of L-type swing span is hinged with the connecting rod in toggle；L-type swing span
Another free end be hinged with the support bar in cam mechanism.
The second embodiment
As it is shown in figure 9, swing span is V-type frame or triangle frame, this V-type frame or triangle frame have three interface points,
Three pin joints are hinged with connecting rod, support bar and slide block respectively.
The third embodiment
As shown in Figure 10, swing span is straight line pole, and this straight line pole is provided with two pin joints, a pin joint and slide block
It is hinged；Another pin joint is hinged with the support bar in connecting rod and cam mechanism respectively.
Toggle includes crank 31 and connecting rod 32.Crank is preferably driven by crank drive motor；The one of connecting rod
Holding the rotary shaft with crank to be hinged, the other end of connecting rod is hinged with swing span；Angle between crank and connecting rod can be adjusted
Whole.
Cam mechanism includes camshaft 51, cam set 52, cam driving gear 53, cam changeover mechanism 54, push rod 55 and
Support bar 56.
Camshaft can rotate under the driving effect of cam driving gear.
As it is shown on figure 3, cam driving gear 53 preferably includes camshaft actuated motor 531, synchronous pulley 532 and Timing Belt
533.Camshaft actuated motor is connected with camshaft with Timing Belt by synchronous pulley.
The structure of cam set has the following two kinds preferred embodiment.
Embodiment 1
Cam set includes a cam disc 521.
Embodiment 2
As shown in Figure 4, cam set includes at least two cam disc, is and is rigidly connected between cam disc；Cam set is coaxial
It is sleeved on camshaft；Cam set can be under the effect of cam changeover mechanism, axially carrying out sliding and locking along camshaft；
When cam set locks mutually with camshaft, cam set can be along with camshaft synchronous axial system.
It is provided with between adjacent two cam discs and stirs gap 523.
As it is shown in figure 5, above-mentioned cam changeover mechanism 54 includes leading screw 543, switch motor 541, guide rod 542 and shift fork 544.
Above-mentioned guide rod, preferably by two, is set in parallel in the both sides of camshaft respectively, and every guide rod all slides even with shift fork
Connect.Wherein switch motor is fixedly connected with leading screw one end, and switch motor rotational band movable wire thick stick rotates.Leading screw two ends are cut with scissors with frame
Connect.Two guide rods are fixedly connected with frame.Shift fork is actively coupled with guide rod, by neutral threaded hole and silk by upper and lower two holes
Thick stick cooperatively forms screw thread pair transmission, and the rotation of leading screw can realize the movement of shift fork.The other end of shift fork is stuck in the two of cam set
Stirring in gap between individual cam disc, shift fork moves left and right and is capable of the switching to cam disc, i.e. realize different cam disc with
Cam auxiliary driving is cooperatively formed between push rod.
When cam disc includes two or more, by the effect of cam changeover mechanism, each cam disc can be made equal
Sliding is also locked in the surface of push rod.
The contour line of above-mentioned cam disc can coordinate composition cam auxiliary driving with the top of push rod.For a cam disc, can
To use a contour line to realize multiple cooked mode, it would however also be possible to employ differently contoured line realizes different cooked mode.
The contour line of above-mentioned cam disc preferably has the following two kinds preferred embodiment.
Contour line embodiment 1
On the outer peripheral face of cam disc, the contour line of setting is as shown in Figure 6, including several draw-in grooves 522, and preferably 4, often
Individual draw-in groove all can fasten with the top of push rod, and the bottom of push rod is hinged with swing span.
Curved transition is used between draw-in groove；Adjacent two draw-in grooves in radial direction angle be 90 °；Four corresponding four of draw-in grooves add
Work pattern.
In Fig. 6, in distance center different distance Ri, draw-in groove is set at Difference angles, between each draw-in groove, uses curve
Excessively.The corresponding cooked mode of each draw-in groove, if A0 is total travel cooked mode, A1 is the quick blanking die of certain thickness of slab
Formula, A2 is the heavily loaded stamping-out pattern of certain thickness of slab.
When push rod fastens with the draw-in groove being positioned at directly over push rod in cam disc, it is possible to realize the tune of push rod height
Whole, and then when punch. contact sheet material, the adjustment of angle between crank and connecting rod, i.e. different force characteristics and different speedup can be realized
The adjustment of characteristic, adapts to the change of different stamping-out thickness of slab simultaneously.
When punch. contact sheet material, between crank and connecting rod in sharp clevis angle the biggest, power is the least, and speedup is the biggest,
When crank and connecting rod are perpendicular, speedup is maximum, and stamping-out is fastest；Between crank and connecting rod in sharp clevis angle the least,
Power is the biggest, and speedup is the least.
As shown in Fig. 6 and Figure 11, the A0 position of cam disc engages with push rod upper end, when crank is misaligned with connecting rod conllinear
Time, for lower limit position, as shown in figure 11；When crank overlaps with connecting rod conllinear, for upper extreme position, as shown in figure 12.
Blanking pressure is usually the shock loading of moment, and 1/3 ~ 1/2 blanking pressure that i.e. general drift enters sheet material disappears, institute
The angle of crank during punch. contact sheet material and connecting rod is only considered with, the reinforcement characteristic of mechanism and progressive performance.
Different from traditional forcing press, electricity drift adds man-hour, at the driving lower crank of servomotor only in low-angle
Swinging (corresponding drift only moves back and forth in little scope), to reach the purpose of rapid processing, drift (is arranged on cunning simultaneously
Block lower end) position be controlled；And conventional press, the lower crank that drives at AC induction motor makees the circle that continuous print is complete
Zhou Yundong, working (machining) efficiency is low, and energy consumption is high, and the position of drift is uncontrollable.
By cam disc different angles and the adjustment of push rod height, to crank during drift contact plate material and the angle between connecting rod
It is adjusted, to obtain different speedups and reinforcement characteristic.
When punch. contact sheet material, the angle between bent axle and connecting rod determines the reinforcement of mechanism, progressive performance.Namely when punching
Head contact sheet material time, between crank and connecting rod in sharp clevis angle the biggest, power is the least, and speedup is the biggest, when crank and connecting rod
Time perpendicular, speedup is maximum, and stamping-out is fastest；Between crank and connecting rod in sharp clevis angle the least, power is the biggest, speedup
The least.
Contour line embodiment 2
The contour line arranged on the outer peripheral face of cam disc as shown in Figure 7 and Figure 8, for SPL, inserted by 6 by SPL
The matching of value point forms, and the angle at adjacent two interpolation points interval is 60 °.Radial delta (d) between each interpolation point is identical, pressure
(θ) is identical at angle.
The corresponding cooked mode of each interpolation point；Six corresponding six cooked modes of interpolation point.
I.e. when cam disc uniform rotation, push rod energy uniform motion, it is achieved big stroke constant force cooked mode.
Cooked mode is mainly following three kinds:
One, Flexible Manufacture pattern
Toggle and cam mechanism action simultaneously, two action one complicated slide block movement curves of synthesis, tool
Having the highest processing flexibility, the curve movement of slide block can change according to the process requirements of concrete part.
Two, quick or heavily loaded cooked mode
After cam mechanism is adjusted to ad-hoc location, locking, crank rod movement, complete the quick, heavily loaded of specific thickness of slab and add
Work pattern.When using the contour curve in embodiment 1 such as cam disc, push rod is stuck in certain draw-in groove.
Three, big stroke constant force cooked mode
Toggle is in ad-hoc location (namely when crank connecting link is positioned at same linear position) locking, and cam mechanism is transported
Dynamic, it is achieved big stroke constant force cooked mode.As cam disc uses the contour curve in embodiment 2.
Preferred implementation of the present utility model described in detail above, but, this utility model is not limited to above-mentioned reality
Execute the detail in mode, in technology concept of the present utility model, the technical solution of the utility model can be entered
The multiple equivalents of row, these equivalents belong to protection domain of the present utility model.
Claims (10)
1. a punch press main drive gear with cam auxiliary driving, it is characterised in that: include blanking apparatus and power speedup
Adjusting apparatus；
Blanking apparatus includes the slide block of the vertical sliding of energy；
Power speedup adjusting apparatus includes toggle, swing span and cam mechanism；Swing span is arranged on crank connecting link machine
Between structure and cam mechanism, and swing span is hinged with slide block, toggle and cam mechanism respectively；
Toggle includes crank and connecting rod, and one end of connecting rod is hinged with the rotary shaft of crank, the other end of connecting rod with
Swing span is hinged；
Cam mechanism includes camshaft, cam set, cam driving gear and push rod；The bottom of push rod is hinged with swing span；
Camshaft can rotate under the driving effect of cam driving gear；
Cam set comprises at least one cam disc, and the contour line of cam disc can coordinate composition cam auxiliary driving with the top of push rod.
The punch press main drive gear with cam auxiliary driving the most according to claim 1, it is characterised in that: cam mechanism
Also include cam changeover mechanism；Cam set includes at least two cam disc, is and is rigidly connected between cam disc；Cam set is coaxial
It is sleeved on camshaft；Cam set can be under the effect of cam changeover mechanism, axially carrying out sliding and locking along camshaft；
When cam set locks mutually with camshaft, cam set can be along with camshaft synchronous axial system.
The punch press main drive gear with cam auxiliary driving the most according to claim 2, it is characterised in that: adjacent two
It is provided with between cam disc and stirs gap；Cam changeover mechanism includes leading screw, switch motor and shift fork；Switch motor can drive silk
Thick stick rotates, and one end of shift fork is connected with threads of lead screw, and the other end of shift fork stretches into any one and stirs in gap.
The punch press main drive gear with cam auxiliary driving the most according to claim 3, it is characterised in that: cam switches
Mechanism also includes paralleling the guide rod of setting with camshaft, and this guide rod is slidably connected with shift fork.
The punch press main drive gear with cam auxiliary driving the most according to claim 1, it is characterised in that: cam disc
Being provided with four draw-in grooves on outer peripheral face, each draw-in groove all can fasten with the top of push rod, uses curved transition between draw-in groove, adjacent
Two draw-in grooves in radial direction angle be 90 °；Four corresponding four cooked modes of draw-in groove.
The punch press main drive gear with cam auxiliary driving the most according to claim 5, it is characterised in that: when push rod with
The draw-in groove being positioned at directly over push rod in cam disc fastens, it is possible to realizes the adjustment of push rod height, and then works as punch. contact
During sheet material, the adjustment of angle between crank and connecting rod can be realized.
The punch press main drive gear with cam auxiliary driving the most according to claim 6, it is characterised in that: when drift connects
During touch panel material, between crank and connecting rod in sharp clevis angle the biggest, power is the least, and speedup is the biggest, when crank hangs down mutually with connecting rod
Time straight, speedup is maximum, and stamping-out is fastest；Between crank and connecting rod in sharp clevis angle the least, power is the biggest, and speedup is more
Little.
The punch press main drive gear with cam auxiliary driving the most according to claim 1, it is characterised in that: cam disc
Contour line is SPL, and SPL is formed by 6 interpolation point matchings, and the radial delta between each interpolation point is identical, pressure
Angle is identical.
The punch press main drive gear with cam auxiliary driving the most according to claim 8, it is characterised in that: work as cam disc
During uniform rotation, push rod energy uniform motion, it is achieved big stroke constant force cooked mode.
The punch press main drive gear with cam auxiliary driving the most according to claim 1, it is characterised in that: cam drives
Dynamic device includes camshaft actuated motor, synchronous pulley and Timing Belt；Camshaft actuated motor passes through synchronous pulley and Timing Belt
It is connected with camshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620437850.2U CN205615032U (en) | 2016-05-13 | 2016-05-13 | Main transfer machinery for punch press with cam auxiliary driving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620437850.2U CN205615032U (en) | 2016-05-13 | 2016-05-13 | Main transfer machinery for punch press with cam auxiliary driving |
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| Publication Number | Publication Date |
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| CN205615032U true CN205615032U (en) | 2016-10-05 |
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| CN201620437850.2U Active CN205615032U (en) | 2016-05-13 | 2016-05-13 | Main transfer machinery for punch press with cam auxiliary driving |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560550A (en) * | 2019-09-23 | 2019-12-13 | 黄丹丹 | Multi-station strip punching machine |
-
2016
- 2016-05-13 CN CN201620437850.2U patent/CN205615032U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560550A (en) * | 2019-09-23 | 2019-12-13 | 黄丹丹 | Multi-station strip punching machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Nanyou IOT Technology Park Ltd. Assignor: Nanjing Post & Telecommunication Univ. Contract record no.: 2016320000216 Denomination of utility model: Main transfer machinery for punch press with cam auxiliary driving Granted publication date: 20161005 License type: Common License Record date: 20161117 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu Nanyou IOT Technology Park Ltd. Assignor: Nanjing Post & Telecommunication Univ. Contract record no.: 2016320000216 Date of cancellation: 20180116 |
|
| EC01 | Cancellation of recordation of patent licensing contract |