CN106475473B - A kind of lifting formula mould replacing trolley and its die exchange - Google Patents
A kind of lifting formula mould replacing trolley and its die exchange Download PDFInfo
- Publication number
- CN106475473B CN106475473B CN201611014938.4A CN201611014938A CN106475473B CN 106475473 B CN106475473 B CN 106475473B CN 201611014938 A CN201611014938 A CN 201611014938A CN 106475473 B CN106475473 B CN 106475473B
- Authority
- CN
- China
- Prior art keywords
- mould
- moving device
- chassis
- loading end
- car body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 230000003028 elevating effect Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009415 formwork Methods 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B21D37/14—Particular arrangements for handling and holding in place complete dies
- B21D37/147—Tool exchange carts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a kind of lifting formula mould replacing trolley and its die exchange, including chassis car body, chassis car body includes loading end and chassis, with the electric control system for being ready for use on control mold changing process on chassis car body, connected between loading end and chassis by the first elevating mechanism, chassis car body both ends are provided with mounting seat, the second elevating mechanism is connected between mounting seat and chassis car body, mounting seat is provided with Mould moving device, horizontal translation mechanism is connected between Mould moving device and mounting seat, the cross section of Mould moving device is L-shaped, and the both sides of mould are equipped with the shoulder rank being adapted with Mould moving device.Compared with prior art, the beneficial effects of the invention are as follows：Elevating mechanism is first passed through to lift mould, mould is moved on chassis by translation mechanism again, without any friction of generation between the bottom surface of mould and workbench and chassis in whole process, and it is steady to change the mold process, and mould replacing time has been saved, improve mold changing efficiency.
Description
Technical field
The invention belongs to stamping machine to change the mold operation corollary equipment, is related to a kind of lifting formula mould replacing trolley and its die exchange.
Background technology
, can only be by crane and manpower come more mold exchange in more mold exchange in current plastic cement industry.Crane is more
The askew operation against rules for skewing and hanging easily occurs during mold exchange, mould damage lathe also easily occurs in drawing process for steel wire rope
The situation of equipment.On the other hand due to pull distance be difficult control, operating personnel completely with oneself feel operated, pole
Easily cause undue force and mould is slid the accident that ground is hurted sb.'s feelings.It is in addition, very time-consuming by manpower movement large mold
Arduously.
Chinese patent, Application No. 201220164757.0, a kind of disclosed quick mould replacing trolley mainly change including transition
Die station, electric control cabinet, guide rail, mold changing platform and pneumatic positioning component.Guide rail is provided with by the body of large size plastic jetting-moulding device,
Pneumatic positioning component is provided with the head end of guide rail.Pneumatic positioning component includes double circle roller, roller positioning seat and one group of collision block,
Double round rollers are arranged in roller positioning seat, and double round roller both ends installation bearings, collision block is arranged on roller positioning seat both sides.Institute
Stating mold changing platform includes wheel, wheel shaft, the first variable frequency reducer motor, the first sprocket wheel, the first chain, the first car body, the
One bearing plate and one group of first roller, clutch shaft bearing seat board is installed on first car body, installed on clutch shaft bearing seat board
One group of first roller.The first roller end connects the first sprocket wheel, and the sprocket wheel of each two first is connected by first chain
Connect.First variable frequency reducer motor is arranged on clutch shaft bearing seat board by first end face flange.First frequency conversion speed-down
The first output sleeve and the first roller on motor is integral by the first key connection.The first car body front end connects support branch
Hold, cylinder seat is installed in support supporting, cylinder is connected on cylinder seat, connects alignment pin in the cylinder, cylinder passes through work
The motion of stopper rod controls alignment pin to move.
Although it has advantages below：It is simple, compact and reasonable for structure；Quick mold changing can be automatically realized, is subtracted
Lack existing insecurity and replacing construction during more mold exchange, alleviate the work load of worker.
But have a disadvantage in that：Drive mechanism is complicated.
Chinese patent, Application No. 200920293345.5, disclose a kind of Quick mold-changing system trolley, it is characterised in that
Including：Three shifting formwork support arms being arranged side by side, the front end of shifting formwork support arm are used to laying diel, and the one of middle shifting formwork support arm
Side is provided with mould drawing bar, and the rear end of mould drawing bar is connected by drawing bar with chain, and the rear end of chain is sleeved on driving tooth
On wheel, for front end sleeve on driven gear, air motor drives driving gear by decelerator, and air motor is fixed on centre
The rear end of shifting formwork support arm.
Although it has advantages below：Simple in construction, cost is cheap, can be in level with diel firm and reliable connection
Push-and-pull diel on direction, the device of automatic access of mold punch press is realized, reduces potential safety hazard, improve operation effect
Rate.
But its shortcoming is：Mould is by hard draw to mould replacing trolley, easily mould is caused when leaving workbench
Abrasion.
The content of the invention
The present invention needs to solve the problems, such as to be to be directed to above-mentioned the deficiencies in the prior art, and providing one kind can avoid wearing mould
The lifting formula mould replacing trolley and its die exchange of tool.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of lifting formula mould replacing trolley, including chassis car body, chassis car body include loading end and chassis, and chassis is provided with car
Wheel, wheel runs along guide rail, with the electric control system for being ready for use on control mold changing process on chassis car body, in electric control system
Provided with PLC, connected between loading end and chassis by the first elevating mechanism, both ends of the chassis car body along its direction of motion
A mounting seat is movably connected with, the second elevating mechanism, the driving of the second elevating mechanism are connected between mounting seat and chassis car body
Mounting seat is lifted on chassis car body, and Mould moving device is connected with mounting seat, is connected between Mould moving device and mounting seat
Horizontal translation mechanism, the horizontal translation mechanism driving extended or retracted chassis car body of Mould moving device, the cross section of Mould moving device is L-shaped, and
Convex rank is oppositely arranged down, and the both sides of mould are equipped with the shoulder rank being adapted with Mould moving device,
Loading end is provided with the first range sensor towards punch press side, and the first range sensor is used to detect loading end and punching
Drop between bed workbench, and transmit a signal to PLC；
Mould moving device is provided with second distance sensor towards the end face of mould, and second distance sensor is used to detect Mould moving device
The end face and mould transmit a signal to PLC backwards to the distance between face；
Loading end is provided with the 3rd range sensor backwards to punch press side, and the 3rd range sensor is used to detect the loading end side
With mould towards the distance between face, and transmit a signal to PLC.
First elevating mechanism and the second elevating mechanism are hydraulic cylinder or cylinder.
Horizontal translation mechanism is hydraulic cylinder or cylinder.
Horizontal translation mechanism is rack-and-pinion kinematic pair.
Horizontal translation mechanism is ball screw kinematic pair.
The die exchange of lifting formula mould replacing trolley, comprises the following steps：
Step 1: chassis car body is moved at face work bench of punch press, stop simultaneously locking；
Step 2: the drop between the first range sensor detection loading end and work bench of punch press, and the letter that will be detected
Number send PLC to, PLC sends instruction, controls the first elevating mechanism lifting or reduces loading end, makes loading end
Flushed with work bench of punch press；
Step 3: second distance sensor detection the Mould moving device end face and mould be backwards to the distance between face, and by signal
Send PLC to, PLC sends instruction, and controlled level translation mechanism driving Mould moving device stretches out, when second distance passes
When the signal that sensor detects is preset value, i.e., Mould moving device is moved to below mould shoulder rank, and PLC sends instruction, horizontal
Translation mechanism stops driving；
Step 4: Mould moving device is located to below mould shoulder rank, PLC sends instruction, and the second elevating mechanism of control will
Mounting seat raises, and Mould moving device lifts mould；
Step 5: after Mould moving device lifts mould, PLC sends instruction, controlled level translation mechanism driving shifting formwork
Arm is retracted, and when the signal that the 3rd range sensor detects is preset value, i.e., mould is reached above the orthographic projection of loading end,
PLC sends instruction, and horizontal translation mechanism stops driving；
Step 6: after mould is reached above the orthographic projection of loading end, PLC sends instruction, controls the second lift
Structure reduces mounting seat, and mould is placed on loading end by Mould moving device, that is, completes to remove mould；
Step 7: the step of toward the step of sending mould on workbench with removing mould, is opposite.
Compared with prior art, the beneficial effects of the invention are as follows：Elevating mechanism is first passed through to lift mould, then by flat
Mould is moved on chassis by telephone-moving structure, is rubbed in whole process between the bottom surface of mould and workbench and chassis without generation is any
Wipe, and mold changing process is steady, and mould replacing time has been saved, improve mold changing efficiency.
In addition, being connected between the loading end and chassis of chassis car body by the first elevating mechanism, different height can be adapted to
Work bench of punch press.
Brief description of the drawings
Fig. 1 is the structural representation of the lifting formula mould replacing trolley of the present invention；
Structural representation when Fig. 2 is the mold changing of lifting formula mould replacing trolley.
Wherein, 1- chassis car body, 2- loading ends, the elevating mechanisms of 3- first, 4- mounting seats, the elevating mechanisms of 5- second, 6- water
Flat translation mechanism, 7- Mould moving devices, the range sensors of 8- first, the range sensors of 9- the 3rd, 10- second distance sensors.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of lifting formula mould replacing trolley, including chassis car body, chassis car body include loading end and chassis, bottom
Frame is provided with wheel, and wheel is run along guide rail, the electric control system for being ready for use on control mold changing process is matched somebody with somebody on chassis car body, electrically
PLC is provided with control system, is connected between loading end and chassis by the first elevating mechanism, chassis car body moves along it
The both ends in direction are movably connected with a mounting seat, are connected with the second elevating mechanism between mounting seat and chassis car body, second liter
Descending mechanism drive installation seat is lifted on chassis car body, and Mould moving device, Mould moving device and mounting seat are connected with mounting seat
Between be connected with horizontal translation mechanism, the horizontal translation mechanism driving extended or retracted chassis car body of Mould moving device, Mould moving device it is transversal
Face is L-shaped, and convex rank is oppositely arranged down, and the both sides of mould are equipped with the shoulder rank being adapted with Mould moving device,
Loading end is provided with the first range sensor towards punch press side, and the first range sensor is used to detect loading end and punching
Drop between bed workbench, and transmit a signal to PLC；
Mould moving device is provided with second distance sensor towards the end face of mould, and second distance sensor is used to detect Mould moving device
The end face and mould transmit a signal to PLC backwards to the distance between face；
Loading end is provided with the 3rd range sensor backwards to punch press side, and the 3rd range sensor is used to detect the loading end side
With mould towards the distance between face, and transmit a signal to PLC.
First elevating mechanism and the second elevating mechanism are hydraulic cylinder or cylinder.
Horizontal translation mechanism is hydraulic cylinder or cylinder.
Horizontal translation mechanism is rack-and-pinion kinematic pair.
Horizontal translation mechanism is ball screw kinematic pair.
The die exchange of lifting formula mould replacing trolley, comprises the following steps：
Step 1: chassis car body is moved at face work bench of punch press, stop simultaneously locking；
Step 2: the drop between the first range sensor detection loading end and work bench of punch press, and the letter that will be detected
Number send PLC to, PLC sends instruction, controls the first elevating mechanism lifting or reduces loading end, makes loading end
Flushed with work bench of punch press；
Step 3: second distance sensor detection the Mould moving device end face and mould be backwards to the distance between face, and by signal
Send PLC to, PLC sends instruction, and controlled level translation mechanism driving Mould moving device stretches out, when second distance passes
When the signal that sensor detects is preset value, i.e., Mould moving device is moved to below mould shoulder rank, and PLC sends instruction, horizontal
Translation mechanism stops driving；
Step 4: Mould moving device is located to below mould shoulder rank, PLC sends instruction, and the second elevating mechanism of control will
Mounting seat raises, and Mould moving device lifts mould；
Step 5: after Mould moving device lifts mould, PLC sends instruction, controlled level translation mechanism driving shifting formwork
Arm is retracted, and when the signal that the 3rd range sensor detects is preset value, i.e., mould is reached above the orthographic projection of loading end,
PLC sends instruction, and horizontal translation mechanism stops driving；
Step 6: after mould is reached above the orthographic projection of loading end, PLC sends instruction, controls the second lift
Structure reduces mounting seat, and mould is placed on loading end by Mould moving device, that is, completes to remove mould；
Step 7: the step of toward the step of sending mould on workbench with removing mould, is opposite.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (5)
1. a kind of lifting formula mould replacing trolley, including chassis car body, chassis car body includes loading end and chassis, and chassis is provided with car
Wheel, wheel runs along guide rail, with the electric control system for being ready for use on control mold changing process on chassis car body, in electric control system
Provided with PLC, it is characterised in that：Connected between loading end and chassis by the first elevating mechanism, chassis car body is transported along it
The both ends in dynamic direction are movably connected with a mounting seat, are connected with the second elevating mechanism between mounting seat and chassis car body, and second
Elevating mechanism drive installation seat is lifted on chassis car body, and Mould moving device, Mould moving device and installation are connected with mounting seat
Horizontal translation mechanism, the horizontal translation mechanism driving extended or retracted chassis car body of Mould moving device, the horizontal stroke of Mould moving device are connected between seat
Section is L-shaped, and convex rank is oppositely arranged down, and the both sides of mould are equipped with the shoulder rank being adapted with Mould moving device,
Loading end is provided with the first range sensor towards punch press side, and the first range sensor is used to detect loading end and puncher
Make the drop between platform, and transmit a signal to PLC；
Mould moving device is provided with second distance sensor towards the end face of mould, and second distance sensor is used to detect the Mould moving device end
Face and mould transmit a signal to PLC backwards to the distance between face；
Loading end is provided with the 3rd range sensor backwards to punch press side, and the 3rd range sensor is used to detect the loading end side and mould
Tool transmits a signal to PLC towards the distance between face；
The die exchange of described lifting formula mould replacing trolley, comprises the following steps：
Step 1: chassis car body is moved at face work bench of punch press, stop simultaneously locking；
Step 2: the drop between the first range sensor detection loading end and work bench of punch press, and the signal detected is passed
PLC is given, PLC sends instruction, controls the first elevating mechanism lifting or reduces loading end, makes loading end and punching
Bed workbench flushes；
Step 3: second distance sensor detection Mould moving device end face is transmitted with mould backwards to the distance between face, and by signal
To PLC, PLC sends instruction, and controlled level translation mechanism driving Mould moving device stretches out, when second distance sensor
When the signal detected is preset value, i.e., Mould moving device is moved to below mould shoulder rank, and PLC sends instruction, horizontal translation
Mechanism stops driving；
Step 4: Mould moving device is located to below mould shoulder rank, PLC sends instruction, and the second elevating mechanism of control will be installed
Seat rise, Mould moving device lift mould；
Step 5: after Mould moving device lifts mould, PLC sends instruction, the driving Mould moving device contracting of controlled level translation mechanism
Return, when the signal that the 3rd range sensor detects is preset value, i.e., mould is reached above the orthographic projection of loading end, PLC controls
Device processed sends instruction, and horizontal translation mechanism stops driving；
Step 6: after mould is reached above the orthographic projection of loading end, PLC sends instruction, and the second elevating mechanism of control will
Mounting seat is reduced, and mould is placed on loading end by Mould moving device, that is, completes to remove mould；
Step 7: the step of toward the step of sending mould on workbench with removing mould, is opposite.
2. lifting formula mould replacing trolley according to claim 1, it is characterised in that：First elevating mechanism and the second elevating mechanism
It is hydraulic cylinder or cylinder.
3. lifting formula mould replacing trolley according to claim 1, it is characterised in that：Horizontal translation mechanism is hydraulic cylinder or gas
Cylinder.
4. lifting formula mould replacing trolley according to claim 1, it is characterised in that：Horizontal translation mechanism moves for rack-and-pinion
It is secondary.
5. lifting formula mould replacing trolley according to claim 1, it is characterised in that：Horizontal translation mechanism moves for ball screw
It is secondary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014938.4A CN106475473B (en) | 2016-11-18 | 2016-11-18 | A kind of lifting formula mould replacing trolley and its die exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014938.4A CN106475473B (en) | 2016-11-18 | 2016-11-18 | A kind of lifting formula mould replacing trolley and its die exchange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106475473A CN106475473A (en) | 2017-03-08 |
| CN106475473B true CN106475473B (en) | 2018-04-03 |
Family
ID=58272597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611014938.4A Active CN106475473B (en) | 2016-11-18 | 2016-11-18 | A kind of lifting formula mould replacing trolley and its die exchange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106475473B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7244235B2 (en) * | 2018-08-31 | 2023-03-22 | 住友重機械工業株式会社 | injection molding system |
| CN114682676B (en) * | 2022-03-31 | 2024-05-07 | 桂林电子科技大学 | Non-stop continuous replacement punching equipment and continuous die replacement method implemented by same |
| CN115194029B (en) * | 2022-09-19 | 2022-12-23 | 扬州市恒安汽车配件有限公司 | Mould clamping device of auto-parts production |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4437085C2 (en) * | 1994-10-17 | 1999-06-17 | Kaiser Kg Otto | Press with a press and console table |
| CN201415400Y (en) * | 2009-07-16 | 2010-03-03 | 东莞市事通达机电科技有限公司 | Carrying robot for large-sized hardware stamping mould |
| CN102941636A (en) * | 2012-11-23 | 2013-02-27 | 烟台孚瑞克森汽车部件有限公司 | Die replacing vehicle |
| CN103317753B (en) * | 2013-07-02 | 2015-11-18 | 上海松科快换自动化股份有限公司 | Small-sized press automatic die changing system |
| CN105107965A (en) * | 2015-09-17 | 2015-12-02 | 青岛海德马克智能装备有限公司 | Automatic die changing press machine |
| CN106040879A (en) * | 2016-07-15 | 2016-10-26 | 无锡明芳汽车部件工业有限公司 | Automatic die changing system for punching machine |
| CN206287447U (en) * | 2016-11-18 | 2017-06-30 | 江苏智石科技有限公司 | One kind praises formula mould replacing trolley |
-
2016
- 2016-11-18 CN CN201611014938.4A patent/CN106475473B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106475473A (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106552870B (en) | A kind of multi-faceted lifting formula mould replacing trolley and its die exchange | |
| CN106426666A (en) | Quick mold change trolley and mold change method thereof | |
| CN206253533U (en) | One kind is multi-faceted to praise formula mould replacing trolley | |
| CN206218627U (en) | A kind of mould replacing trolley | |
| CN203245186U (en) | Roll changing device for limited space | |
| CN106475473B (en) | A kind of lifting formula mould replacing trolley and its die exchange | |
| CN204320983U (en) | A kind of die change car | |
| CN106393577A (en) | Universal mold changing trolley | |
| CN206277382U (en) | A kind of multiple-station rotation mould replacing trolley | |
| CN111760937B (en) | Multi-wire hole type section steel straightening machine capable of quickly changing rollers | |
| CN106734642B (en) | One kind can traversing mould replacing trolley and its die exchange | |
| CN206253534U (en) | One kind quickly praises formula mould replacing trolley | |
| CN106553310A (en) | Mould centering and general mould replacing trolley can be made | |
| CN206287447U (en) | One kind praises formula mould replacing trolley | |
| CN110654968B (en) | Lifting machine capable of automatically clamping materials | |
| CN106391881B (en) | A kind of Quick lifting formula mould replacing trolley and its die exchange | |
| CN206276814U (en) | A kind of convenient mould replacing trolley | |
| CN206217051U (en) | A kind of height adaptive mould replacing trolley | |
| CN102266880B (en) | Moving operating platform for rail correcting hydraulic press | |
| CN206201339U (en) | Mould replacing trolley with anti-offset mechanism | |
| CN206201338U (en) | Mould replacing trolley with electromagnetic adsorption centering body | |
| CN103722114B (en) | Hot die forging press forging conveying arrangement | |
| CN210504204U (en) | Bending machine die warehouse system | |
| CN206201340U (en) | The mould replacing trolley of centering is carried out using blade fin | |
| CN206201336U (en) | Mould replacing trolley with centering body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A lifting type mold changing trolley and its mold changing method Granted publication date: 20180403 Pledgee: Bank of China Limited Liangxi Branch, Wuxi Pledgor: JIANGSU WISDOM STONE TECHNOLOGY Co.,Ltd. Registration number: Y2024980028776 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |