CN207823756U - A kind of numerical control quick die change device - Google Patents
A kind of numerical control quick die change device Download PDFInfo
- Publication number
- CN207823756U CN207823756U CN201820131337.XU CN201820131337U CN207823756U CN 207823756 U CN207823756 U CN 207823756U CN 201820131337 U CN201820131337 U CN 201820131337U CN 207823756 U CN207823756 U CN 207823756U
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- mold
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Abstract
The utility model discloses a kind of numerical control quick die change devices, including mold changing equipment, further include positioning device, and positioning device is used to change the mold equipment and is fixedly connected with the press platen for placing mold to be replaced；The bottom of mold changing equipment is provided with height-regulating mechanism, and changing the mold installation settings on the table top of equipment has automatic mold-change mechanism；Automatic mold-change mechanism includes guided mode push plate for mold to be replaced to be clamped and the automatic shift device being placed on table top, and two guided mode push plates are arranged in the both sides of table top, and guided mode push plate is equipped with card wheel close to press platen one end.The utility model has the beneficial effects that changing the mold equipment, its is simple in structure, using this mold changing equipment, the positioning accuracy of mold to be replaced is high, mold changing speed is fast, mold changing job safety, to same stamping equipment, be suitable for different length, width mold production, take, change the mold it is versatile；By the calibrating mode Adjustment precision of numerical control, hand labor intensity is reduced, improves operating efficiency.
Description
Technical field
The utility model belongs to numerical control mold changing technical field, and in particular to a kind of numerical control quick die change device.
Background technology
Currently, the application of stamping equipment is very extensive, and the method for changing die used for it common are forklift
Fortune, driving handling are required to wherein after forklift fortune, driving handling through artificial school by various ways such as formula trolley transports
Accurate mode Adjustment precision, labor intensity is big, time-consuming, insecurity is more；In such a way that formula trolley transports, need by
Trolley track is preset in the bottom of stamping equipment, and volume is big, high to cause to purchase stamping equipment of high cost and need to rush for required precision
Press equipment and the mould replacing trolley same period to install, for purchased punching machine and press, particularly exchange die size required precision it is higher,
The user of single more secondary molds of set stamping equipment adaptation, it is not applicable with upper type, especially for using automation feed system
Stamping equipment, mold in place after positional precision directly affect the qualification of product, common die change system is unable to reach
Precisely, quickly mold changing requires.
Utility model content
To overcome technological deficiency of the existing technology, the utility model discloses a kind of numerical control quick die change device,
Take, change the mold it is versatile, and pass through the calibrating mode Adjustment precision of numerical control, reduce hand labor intensity, improve operating efficiency
Technical solution adopted by the utility model to solve its technical problems is a kind of numerical control quick die change devices, including
Equipment is changed the mold, further includes positioning device, the positioning device is used to change the mold equipment and consolidates with the press platen for placing mold to be replaced
Fixed connection；
The bottom of the mold changing equipment is provided with height-regulating mechanism, and installation settings has oneself to move on the table top of the mold changing equipment
Mold mechanism；
The automatic mold-change mechanism include guided mode push plate for mold to be replaced to be clamped and be placed on the table top from
Dynamic shift unit, guided mode push plate quantity are two, and two guided mode push plates are arranged in the both sides of table top, and guided mode push plate is close to pressure
Machine bench one end is equipped with card wheel.
Preferably, the positioning device includes the locating detent for positioning lock tube and matching connection with positioning lock tube, described fixed
Position lock tube is mounted on the lower section of press platen, and the side wall that positioning lock tube is right against in the mold changing equipment is arranged in locating detent
On.
Preferably, the positioning lock tube and locating detent are two.
Preferably, the automatic shift device include moving guide rail, electric-control system and be arranged in locating slot multiple ten thousand
To ball, the guided mode push plate is arranged on moving guide rail, and the moving guide rail includes guided mode guide rail and pushes away mould guide rail, is led with guided mode
Rail is arranged in parallel with guided mode lead screw, has guided mode decelerating motor with guided mode lead screw drive connection, pushes away to be provided with pushing away mould silk on mould guide rail
Bar pushes away mould decelerating motor with mould lead screw drive connection is pushed away, and the guided mode decelerating motor and pushing away is mounted on mould decelerating motor
Encoder, the electric-control system are connected with automatic shift device control.
Preferably, the multiple multi-directional ball is in array distribution on the table top of mold changing equipment.
A kind of numerical control rapid mould changing method, including mould is changed the mold and pushes away, the mold changing includes the following steps,
SO1：Mold changing equipment and press platen are fixed by positioning device and height-regulating mechanism；
SO2：Hanging pin there are two being symmetrical arranged on the side wall of mold to be replaced；
SO3：Operation electric-control system makes mold changing equipment close to press platen and locating detent is made to cover locking with positioning lock；
SO3-1：Operation electric-control system make two guided mode push plates with guided mode guide rail be directed through guided mode lead screw, guided mode slow down
Motor adjusts the spacing between it to certain distance slightly wider than mold to be replaced, and it is to be oriented to make two guided mode push plates to push away mould guide rail
The center that two guided mode push plates extend out to press platen direction press platen is adjusted by pushing away mould lead screw, pushing away mould decelerating motor,
And the card wheel in guided mode push plate is made to entangle hanging pin；
SO4：The push plate of operation electric control system controls guided mode along the longitudinal direction draw mold to be replaced from press platen by movement
Go out into mold changing equipment；
SO5：During above-mentioned mold changing, electric-control system is by the digital signal of real-time reception encoder feedback, if with pre-
If deviation occurs in position, after electric-control system operation, fine tuning instruction is provided, it is ensured that both sides guided mode push plate, which synchronizes, moves to default position
It sets；
The mould that pushes away includes the following steps：
S11：The distance between two guided mode push plates are adjusted to be slightly larger than die width to be replaced；
S12:Mold hoisting to be replaced is manually filled to mold changing installing is standby upper, and operation electric-control system makes mold changing equipment close to press
Platen, and so that locating detent is covered with positioning lock and lock；
S13：Electric-control system is operated, it is to lead that two, which push away the drive of mould decelerating motor and push away mould lead screw to make guided mode push plate to push away mould guide rail,
The center of press platen is moved to promotion mold to be replaced, rear card wheel is rotated to horizontal position in place, and guided mode push plate is retracted, fixed
Couple release between position lock tube and locating detent, mold changing equipment is retracted；
S14：It is above-mentioned to push away the digital signal of electric-control system in mold process by real-time reception encoder feedback, if with default position
It sets and deviation occurs, after electric-control system operation, provide fine tuning instruction, it is ensured that guided mode push plate synchronizing moving ensures mold to be replaced
It is pushed on press platen with correct posture.
The utility model has the beneficial effects that changing the mold equipment, its is simple in structure, to be replaced using this method and mold changing equipment
The positioning accuracy of mold is high, mold changing speed is fast, mold changing job safety is suitable for different length, width to same stamping equipment
Mold production, take, change the mold it is versatile；By the calibrating mode Adjustment precision of numerical control, hand labor intensity is reduced, is improved
Operating efficiency.
Description of the drawings
Fig. 1 is a kind of specific implementation mode structural schematic diagram of the utility model front view.
Fig. 2 is a kind of specific implementation mode structural schematic diagram of the utility model vertical view.
A kind of specific implementation mode structural schematic diagram of equipment state in place is changed the mold when Fig. 3 is the utility model modulus.
Fig. 4 is a kind of specific implementation mode structural schematic diagram that the utility model card wheel locks hanging pin.
Fig. 5 is a kind of specific implementation mode that mold to be replaced is pulled out pressing machine table board status by the utility model mold changing equipment
Structural schematic diagram.
Reference numeral：1- press platens, 2- molds to be replaced, 3- hanging pins, 4- positioning lock tubes, 5- card wheels, 6- guided mode push plates,
7- pushes away mould lead screw, and 8- pushes away mould decelerating motor, 9- encoders, 10- electric-control systems, and 11- pushes away mould guide rail, 12- locating detents, 13- tune
High mechanism, 14- traveling wheels, 15- grooved rails, 16- guided mode decelerating motors, 17- guided mode guide rails, 18- multi-directional balls, 19- guided mode lead screws,
20- plate rails, 21- restraint slots, 22- change the mold equipment, and X- is longitudinal, and Y- is lateral, D- guided mode push plate strokes.
Specific implementation mode
More detailed description is done to the embodiment of the utility model below in conjunction with attached drawing and reference numeral, makes to be familiar with ability
The technology people in domain can implement according to this after studying this specification carefully.It should be appreciated that specific embodiment described herein is only solving
The utility model is released, is not used to limit the utility model.
Embodiment：Referring to attached drawing 1, attached drawing 2, attached drawing 3, attached drawing 4, a kind of attached numerical control quick die change device shown in fig. 5,
Further include positioning device including changing the mold equipment 22, the positioning device is used to change the mold equipment 22 and places the pressure of mold 2 to be replaced
Machine bench 1 is fixedly connected；
The bottom of the mold changing equipment 22 is provided with height-regulating mechanism 13, there is installation settings on the table top of the mold changing equipment 22
Automatic mold-change mechanism；
The automatic mold-change mechanism includes guided mode push plate 6 for mold 2 to be replaced to be clamped and is placed on the table top
Automatic shift device, 6 quantity of guided mode push plate are two, and two guided mode push plates 6 are arranged in the both sides of table top, guided mode push plate 6
Card wheel 5 is installed close to 1 one end of press platen.
As shown in Figure 1, in the present embodiment, press platen 1 is stamping equipment, and mold 2 to be replaced is placed in stamping equipment
On platen, positioning device is fixedly connected for changing the mold equipment 22 with stamping equipment, in longitudinal X-direction of mold 2 to be replaced
Heart line both sides are symmetrical there are two hanging pin 3, and hanging pin 3 is used for the mold changing of mold 2 to be replaced, are symmetricly set on 22 liang of equipment of mold changing
Two guided mode push plates 6 on side are for clamping mold 2 to be replaced, wherein card wheel 5 entangles hanging pin 3 and mold 2 to be replaced can be realized
It with the synchronizing moving of guided mode push plate 6, works by automatic shift device, realizes taking for mold 2 to be replaced.
Preferably, the positioning device includes the locating detent 12 for positioning lock tube 4 and matching connection with positioning lock tube 4, institute
The lower section that positioning lock tube 4 is mounted on press platen 1 is stated, locating detent 12 is arranged is right against positioning in the mold changing equipment 22
On the side wall of lock tube 4.
As shown in figure 3, the card of the locating detent 12 in equipment 22 will be changed the mold to the positioning lock tube 4 on stamping equipment side wall
Realize stamping equipment and change the mold being fixedly connected between the two of equipment 22, it is ensured that stamping equipment and mold changing equipment 22 modulus with change
It will not be produced relative sliding when mould, realize that modulus or mold changing are stablized in guided mode push plate 6.
Preferably, the positioning lock tube 4 and locating detent 12 are two.
As shown in Fig. 2, two positioning lock tubes 4 of setting and two locating detents 12 can be such that stamping equipment connects with mold changing equipment 22
Its stability higher when being connected together, two positioning lock tubes and two locating detents are preferably centrosymmetric distribution.
Preferably, the automatic shift device includes moving guide rail, electric-control system 10 and is arranged more in locating slot 21
A multi-directional ball 18, the guided mode push plate 6 are arranged on moving guide rail, and the moving guide rail includes guided mode guide rail 17 and pushes away mould guide rail
11, it is arranged in parallel with guided mode lead screw 19 with guided mode guide rail 17, has guided mode decelerating motor 16 with the drive connection of guided mode lead screw 19, pushes away mould
It is provided on guide rail 11 and pushes away mould lead screw 7, mould decelerating motor 8, the guided mode decelerating motor 16 are pushed away with the drive connection of mould lead screw 7 is pushed away
Encoder 9 is mounted on mould decelerating motor 8 with pushing away, the electric-control system 10 is connected with automatic shift device control.
Automatic shift device is used for the control panel of numerical control mold changing, and before modulus or mold changing start, operating personnel can adjust ginseng
Number, guided mode decelerating motor 16 start to start, and make two 6 transverse direction Y movements of guided mode push plate that the spacing between its two plate be made to be more than and wait for more
2 length preset value of mold exchange, after guided mode push plate 6 reaches predeterminated position, traveling wheel 14, which starts, drives mold changing equipment 22 to be set to punching press
Standby close, the rear card of locating detent 12 extremely positions lock tube 4 and locks realization and is accurately positioned in place, fixed stamping equipment and mold changing equipment
22, the startup of mould decelerating motor 8 is pushed away, two guided mode push plates 6 are pushed to the i.e. longitudinal Y-direction in 2 direction of mold to be replaced, stretch out process
In, fine tuning instruction is made in the position of the two guided mode push plates 6 of detection in real time of encoder 9 if there is deviation after 10 operation of electric-control system,
It is in order to ensure two guided mode push plates, 6 synchronizing moving, second is that in order to ensure pushing away mould deceleration electricity that the position for detecting two guided mode push plates 6, which is one,
Whether machine 8 by two guided mode push plates 6 has been pushed into 2 position of mold to be replaced, and card wheel 5 is allow to be fixedly connected with hanging pin 3.Such as Fig. 4 institutes
Show, card wheel 5 rotates up, and 3 locking of hanging pin is fixed mold 2 to be replaced, after fixing mold 2 to be replaced, such as 5 institute of attached drawing
Show, pushes away 8 antiport of mould decelerating motor and drive two guided mode push plates 6 that mold 2 to be replaced is pulled out stamping equipment, movement is scheduled to be led
Mould push plate stroke D completes modulus process.
The multi-directional ball 18 being arranged in restraint slot 21 keeps guided mode push plate 6 steadily mobile, and will not make multi-directional ball 18 random again
It rolls.
Mold changing process and modulus process by the spacing between two guided mode push plates 6 on the contrary, be adjusted to another die width, fixed extension
Pin 3 and card wheel 5 are pushed to another mold on stamping equipment by the reverse order of Fig. 5-Fig. 4-Fig. 3.
In another embodiment, it is raising operating efficiency, a set of mold changing equipment 22 is configured in stamping equipment both sides,
It is a set of to be used for modulus, meanwhile, it is another set of for changing the mold, it guided mode decelerating motor 16 and pushes away mould decelerating motor 8 stepping can also be used, watch
The common decelerating motors of replacements such as clothes carry out numerical control control the mold changing equipment is not required to setting encoder 9, make the numerical control
Quick die change device structure is simpler.
Preferably, further include carriage, 22 bottom of mold changing equipment is provided with two row traveling wheels 14, the sliding dress
It sets including two tracks, wherein at least one is grooved rail 15, and another track is plate rail 20, and it is heavy to be provided on the grooved rail 15
Slot, upper deep gouge and the step on the traveling wheel 14 are mutually chimeric.
Step of the equipment 22 in moving process on traveling wheel 14 is changed the mold to be oriented to the mutually chimeric realization of deep gouge on grooved rail 15.
Traveling wheel 14 is four, is installed on 22 bottom both ends of mold changing equipment, and ground is laid with two row tracks, that is, plate rail 20, grooved rail 15, both ends
Traveling wheel 14 roll walking on it, wherein with the traveling wheel 14 that grooved rail 15 contacts, there is protrusion insertion grooved rail 15 top surface thereon
Upper deep gouge in, for change the mold equipment 22 guiding, positioning.
Preferably, the multiple multi-directional ball 18 is in array distribution on the table top of mold changing equipment 22.
Since the rolling of multi-directional ball 22 is flexible, keep the objects such as the working plate run on it, body feed tank very flexible
Sliding, the distribution density of multi-directional ball 18 can be arbitrarily set according to different bearing requirements.
A kind of numerical control rapid mould changing method, including mould is changed the mold and pushes away, the mold changing includes the following steps,
SO1：Mold changing equipment 22 and press platen 1 are fixed by positioning device and height-regulating mechanism 13；
SO2：Hanging pin 3 there are two being symmetrical arranged on the side wall of mold 2 to be replaced；
SO3：Operation electric-control system 10 makes mold changing equipment 22 close to press platen 1 and makes locating detent 12 and positioning lock tube 4
Locking；
SO3-1：Operation electric-control system 10 make two guided mode push plates 6 with guided mode guide rail 17 be directed through guided mode lead screw 19,
Guided mode decelerating motor 16 adjusts the spacing between it to certain distance slightly wider than mold 2 to be replaced, makes two guided mode push plates 6 to push away
Mould guide rail 11 is to be directed through push away mould lead screw 7, push away the two guided mode push plates 6 of adjustment of mould decelerating motor 8 to the stretching of 1 direction of press platen
To the center of press platen 1, and the card wheel 5 in guided mode push plate 6 is made to entangle hanging pin 3；
SO4：Operating the control guided mode of electric-control system 10 push plate 6, X-direction is moved mould to be replaced from press platen 1 along longitudinal direction
Tool 2 is drawn out in mold changing equipment 22；
SO5：During above-mentioned mold changing, the digital signal that electric-control system 10 is fed back by real-time reception encoder 9, if with
There is deviation in predeterminated position, after 10 operation of electric-control system, provide fine tuning instruction, it is ensured that both sides guided mode push plate 6 synchronize move to it is pre-
If position；
The mould that pushes away includes the following steps：
S11：The distance between two guided mode push plates 6 are adjusted to be slightly larger than 2 width of mold to be replaced；
S12:Manually by mold 2 to be replaced lifting to mold changing installing standby 22, operation electric-control system 10 makes mold changing equipment 22
Close to press platen 1, and locating detent 12 is made to be locked with positioning lock tube 4；
S13：Electric-control system 10 is operated, two push away the drive of mould decelerating motor 9 and push away mould lead screw 7 guided mode push plate 6 is made to be led to push away mould
Rail 11 is to be oriented to the center for pushing mold 2 to be replaced to be moved to press platen 1, in place the rear rotation of card wheel 5 to horizontal position, guided mode
Push plate 6 is retracted, and the release that couples between lock tube 4 and locating detent is positioned, and mold changing equipment 22 is retracted；
S14：It is above-mentioned to push away the digital signal that electric-control system 10 is fed back by real-time reception encoder 9 in mold process, if with pre-
If deviation occurs in position, after 10 operation of electric-control system, fine tuning instruction is provided, it is ensured that 6 synchronizing moving of guided mode push plate, guarantee wait for more
Mold exchange 2 is pushed into correct posture on press platen 1.
During mold changing, operation electric-control system 10 make two guided mode push plates 6 with guided mode guide rail 17 be directed through guided mode silk
Bar 19, guided mode decelerating motor 16 adjust spacing to the certain distance slightly wider than mold 2 to be replaced between it and are easy for guided mode push plate 6
When being stretched out to mold 2 to be replaced, preset clearance prevents from colliding mold 2 to be replaced.
It pushes away in mold process, the distance between two guided mode push plates 6 is adjusted to be easy for waiting for slightly larger than 2 width of mold to be replaced
Mold changing equipment 22 is slid into when more mold exchange 2 lifts in place.
Preferably, in the step SO1, by height-regulating mechanism 13 adjust the specific steps are：By adjusting height-regulating mechanism
13 ensure that 18 top surface of multi-directional ball is in plane on press platen 1 in same level.
The predeterminated position includes the exact position of mold 2 to be replaced, for example, mold to be replaced 2 is accurate from guided mode push plate 6
2 specific width worth of distance or mold to be replaced, can be arranged by controller.Using this method and mold changing equipment 22, wait for more
The positioning accuracy of mold exchange 2 is high, mold changing speed is fast, mold changing job safety, to same stamping equipment, be suitable for different length,
The mold of width produces, take, change the mold it is versatile；By the calibrating mode Adjustment precision of numerical control, hand labor intensity is reduced,
Improve operating efficiency.
The above content is the further descriptions made to the utility model in conjunction with specific preferred embodiment, cannot recognize
Determine specific embodiment of the present utility model and is confined to these explanations.For the common skill of the utility model technical field
For art personnel, the other embodiment obtained in the case where not departing from the technical solution of the utility model should be included in this practicality
In novel protection domain.
Claims (5)
1. a kind of numerical control quick die change device, including mold changing equipment（22）, it is characterised in that：Further include positioning device, it is described fixed
Position device is for changing the mold equipment（22）With placement mold to be replaced（2）Press platen（1）It is fixedly connected；
The mold changing equipment（22）Bottom be provided with height-regulating mechanism（13）, the mold changing equipment（22）Table top on installation settings
There is automatic mold-change mechanism；
The automatic mold-change mechanism includes for mold to be replaced to be clamped（2）Guided mode push plate（6）And it is placed on the table top
Automatic shift device, guided mode push plate（6）Quantity is two, two guided mode push plates（6）It is arranged in the both sides of table top, guided mode pushes away
Plate（6）Close to press platen（1）One end is equipped with card wheel（5）.
2. numerical control quick die change device as described in claim 1, it is characterised in that：The positioning device includes positioning lock tube
（4）And with positioning lock tube（4）Match the locating detent of connection（12）, the positioning lock tube（4）It is mounted on press platen（1）
Lower section, locating detent（12）It is arranged in the mold changing equipment（22）It is right against positioning lock tube（4）Side wall on.
3. numerical control quick die change device as claimed in claim 2, it is characterised in that：The positioning lock tube（4）And locating detent
（12）It is two.
4. numerical control quick die change device as described in claim 1, it is characterised in that：The automatic shift device includes that movement is led
Rail, electric-control system（10）And it is arranged in locating slot（21）In multiple multi-directional balls（18）, the guided mode push plate（6）It is arranged in movement
On guide rail, the moving guide rail includes guided mode guide rail（17）And push away mould guide rail（11）, with guided mode guide rail（17）It is arranged in parallel with and leads
Mould lead screw（19）, with guided mode lead screw（19）Drive connection has guided mode decelerating motor（16）, push away mould guide rail（11）On be provided with and push away mould
Lead screw（7）, and push away mould lead screw（7）Drive connection pushes away mould decelerating motor（8）, the guided mode decelerating motor（16）Slow down with mould is pushed away
Motor（8）On be mounted on encoder（9）, the electric-control system（10）It controls and connects with automatic shift device.
5. numerical control quick die change device as claimed in claim 4, it is characterised in that：The multiple multi-directional ball（18）In array point
It is distributed in mold changing equipment（22）Table top on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820131337.XU CN207823756U (en) | 2018-01-26 | 2018-01-26 | A kind of numerical control quick die change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820131337.XU CN207823756U (en) | 2018-01-26 | 2018-01-26 | A kind of numerical control quick die change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207823756U true CN207823756U (en) | 2018-09-07 |
Family
ID=63394939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820131337.XU Expired - Fee Related CN207823756U (en) | 2018-01-26 | 2018-01-26 | A kind of numerical control quick die change device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207823756U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246893A (en) * | 2018-01-26 | 2018-07-06 | 重庆肯卓科技有限公司 | A kind of numerical control rapid mould changing method and numerical control quick die change device |
| CN113680905A (en) * | 2021-09-08 | 2021-11-23 | 江苏智石科技有限公司 | Automatic rotatory retooling platform truck |
| CN113714399A (en) * | 2021-09-14 | 2021-11-30 | 江苏智石科技有限公司 | Quick die change system of die change platform truck |
| CN114054602A (en) * | 2021-11-29 | 2022-02-18 | 江苏智石科技有限公司 | Die changing trolley of multiple punching machines and system thereof |
-
2018
- 2018-01-26 CN CN201820131337.XU patent/CN207823756U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246893A (en) * | 2018-01-26 | 2018-07-06 | 重庆肯卓科技有限公司 | A kind of numerical control rapid mould changing method and numerical control quick die change device |
| CN108246893B (en) * | 2018-01-26 | 2023-11-17 | 重庆肯卓科技有限公司 | Numerical control quick die changing method and numerical control quick die changing device |
| CN113680905A (en) * | 2021-09-08 | 2021-11-23 | 江苏智石科技有限公司 | Automatic rotatory retooling platform truck |
| CN113714399A (en) * | 2021-09-14 | 2021-11-30 | 江苏智石科技有限公司 | Quick die change system of die change platform truck |
| CN114054602A (en) * | 2021-11-29 | 2022-02-18 | 江苏智石科技有限公司 | Die changing trolley of multiple punching machines and system thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 Termination date: 20190126 |