CN108787838A - A kind of punch forming mechanism with copper strips automatic adjustment - Google Patents
A kind of punch forming mechanism with copper strips automatic adjustment Download PDFInfo
- Publication number
- CN108787838A CN108787838A CN201810838161.6A CN201810838161A CN108787838A CN 108787838 A CN108787838 A CN 108787838A CN 201810838161 A CN201810838161 A CN 201810838161A CN 108787838 A CN108787838 A CN 108787838A
- Authority
- CN
- China
- Prior art keywords
- fixed
- plate
- top surface
- copper strips
- vertical plate
- 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.)
- Withdrawn
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/021—Control or correction devices in association with moving strips
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
- B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
-
- 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
- B21D45/02—Ejecting devices
- B21D45/04—Ejecting devices interrelated with motion of tool
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of punch forming mechanisms with copper strips automatic adjustment, including rack, the top surface of the top plate of the rack is fixed with upper support frame, the top surface of the top plate of rack is fixedly arranged in the middle of lower fixed seat, there is lateral straight slot in the middle part of the bottom surface of lower fixed seat, there is middle part installation groove, for lower die sleeve in the installation groove of middle part, the bottom surface of middle part installation groove forms multiple vertical guide through holes in the middle part of the top surface of lower fixed seat；It carries out high and low position adjusting by upper roll body and lower roll body, the horizontal position of the copper strips of conveying can be adjusted, and ensure the rate of tension of copper strips, after copper strips is delivered at the top surface of lower die, carries out upper mold and decline punching press completion, it is after the completion of punching press, lower die can be sprung back so that the molded part in the lower die can spring back loosening upwards, will not holding in lower die, easy-unloading, effect are good.
Description
Technical field
The present invention relates to metal stamping formed technical field of processing equipment, more specifically to a kind of to have copper strips automatic
The punch forming mechanism of adjusting.
Background technology
In existing copper component punch forming, generally by upper die and lower die punch forming, portion after molding
Part can be in lower die, and after punching press is of long duration, the molded part meeting holding of part punching press influences discharging, very at lower die
Trouble；
And copper strips is conveyed generally by copper strip roll and is in lower die top surface and carries out punch forming making by copper sheet punching press
Copper component, copper strips conveying be it is general only there is idler roller, can not adjust conveying when copper strips horizontal position, to influence
Punch forming effect.
Invention content
The purpose of the present invention aiming at the prior art deficiency, and provide it is a kind of with copper strips automatic adjustment striking out
Type mechanism, it carries out high and low position adjusting by upper roll body and lower roll body, can adjust the horizontal position of the copper strips of conveying, and protect
The rate of tension for demonstrate,proving copper strips after copper strips is delivered at the top surface of lower die, carries out upper mold and declines punching press completion, completed in punching press
Afterwards, lower die can be sprung back so that the molded part in the lower die can spring back loosening upwards, will not holding in lower die,
Easy-unloading, effect are good.
The technology solution of the present invention is as follows：
A kind of punch forming mechanism with copper strips automatic adjustment, including rack, the top surface of the top plate of the rack are fixed
There are upper support frame, the top surface of the top plate of rack to be fixedly arranged in the middle of lower fixed seat, there is lateral straight slot in the middle part of the bottom surface of lower fixed seat,
There is middle part installation groove, lower die sleeve is in the installation groove of middle part, the bottom of middle part installation groove in the middle part of the top surface of lower fixed seat
Face forms multiple vertical guide through holes, and the bottom surface of lower die has mounting plate, mounting plate to be in the installation groove of middle part, mounting plate
Bottom surface be fixed with it is multiple be vertically directed bar, be vertically directed bar bottom end stretch out vertical guide through hole bottom surface and be fixed with limit
Plate, the part for being vertically directed bar stretching vertical guide through hole are inserted with buffer spring, and limiting plate is put forth effort in the bottom end of buffer spring,
Put forth effort on the top surface of lateral straight slot in the top of buffer spring；
The middle top surface of the top plate of the upper support frame is fixed with punching press oil cylinder, and the push rod of punching press oil cylinder passes through upper support frame
Top plate and be fixed with pressed sheet, the bottom surface of pressed sheet is fixedly arranged in the middle of upper mold, and upper mold is in the surface of lower die；
The left part and right part of the top surface of the top plate of the upper support frame are fixed with compressed oil cylinder, the push rod of two compressed oil cylinders
Across the bottom surface of the top plate of upper support frame and it is fixed with rectangle compression frame, rectangle compresses the surface that frame is in lower fixed seat.
Multiple guide rods are fixed on the top surface of the pressed sheet, guide rod sleeve is on the top plate of upper support frame.
The bottom surface that the rectangle compresses frame is fixed with protection elastic layer.
It is fixed with guide sleeve on the madial wall of the vertical guide through hole, is vertically directed bar sleeve in guide sleeve.
The top surface edge of the lower fixed seat forms circular arc chamfering.
The top of the madial wall of the middle part installation groove has Inner arc chamfering.
The beneficial effects of the present invention are：
It can be after the completion of punching press, lower die rebound, so that the molded part in lower die can spring back pine upwards
It is dynamic, will not holding in lower die, easy-unloading, effect is good.
Description of the drawings
Fig. 1 is the partial structural diagram of the present invention；
Fig. 2 is the partial enlarged view of the present invention；
Fig. 3 is the conveying vertical plate of the present invention and its partial structural diagram of upper-part；
Fig. 4 is the partial structural diagram being oriented at vertical plate；
Fig. 5 is the partial enlarged view of Fig. 2.
Specific implementation mode
Embodiment：See shown in Fig. 1 to Fig. 5, a kind of punch forming mechanism with copper strips automatic adjustment, including rack 10,
The top surface of the top plate of the rack 10 is fixedly arranged in the middle of upper support frame 11, is fixed at left and right sides of the top surface of the top plate of rack 10
Vertical plate 20 and winding vertical plate 21 are conveyed, electric rotating is respectively and fixedly provided on conveying vertical plate 20 and the lateral wall for winding vertical plate 21
The output shaft of machine 22, electric rotating machine 22 passes through corresponding conveying vertical plate 20 or winding vertical plate 12 and is fixed with butterfly
23, the front face of butterfly 23 is fixedly arranged in the middle of support shaft 24, and blowing cylinder 100 and rewinding cylinder 200 are placed on correspondence
Support shaft 24 on, support on the side wall of shaft 24 the raised positioning strip sleeve that has in corresponding blowing cylinder 100 or receive
In the positioning groove having on the madial wall of barrel body 200, the end of support shaft 24 is spirally connected there are two location nut 25, one
Location nut 25 is pressed against on the end face of corresponding blowing cylinder 100 or rewinding cylinder 200, and two location nuts 25 are mutually pressed
It leans on；
It is fixed on the top plate of rack 10 between the conveying vertical plate 20 or winding vertical plate 21 and upper support frame 11
There is guiding to adjust support plate 26, the rear portion top surface for being oriented to adjusting support plate 26 is fixed with guiding vertical plate 27, is oriented to vertical plate 27
Top surface be fixed with guiding horizontal plate 28, be vertically directed the bottom end of screw rod 29 and support plate 26 adjusted being oriented to by bearing hinge connection
On, the top of screw rod 29 is vertically directed by bearing hinge connection on upper guiding horizontal plate 28, and the top surface of upper guiding horizontal plate 28 is solid
Surely there is lift adjustment main motor 281, the output shaft of lift adjustment main motor 281 is splined shaft, and splined shaft sleeve is being vertically directed
In the splined hole that the top of screw rod 29 has, elevator 30, which is screwed onto, to be vertically directed in screw rod 29, and the front end of elevator 30 is fixed
There are main vertical plate 31, the lower front wall face of main vertical plate 31 to have lower roll body 32, the top surface of main vertical plate 31 solid by bearing hinge connection
There are upper main level board 33, the top surface of upper main level board 33 to be fixed with lifting fine tuning motor 34, the output of lifting fine tuning motor 34 surely
Axis passes through upper main level board 33 and is connected with fine tuning swivel nut 35 by shaft coupling, and the bottom end of fine tuning swivel nut 35 is bolted with fine tuning screw rod
36, the bottom end of fine tuning screw rod 36 is fixed with fine adjustment block 37, and the front end face of fine adjustment block 37 has upper roll body 38, upper roller by bearing hinge connection
Body 38 and about 32 lower roll body are corresponding；
The top surface of the top plate of rack 10 is fixedly arranged in the middle of lower fixed seat 12, has in the middle part of the bottom surface of lower fixed seat 12 laterally logical
The top surface middle part of slot 13, lower fixed seat 12 has middle part installation groove 14, and 15 sleeve of lower die is in middle part installation groove 14, middle part
The bottom surface of installation groove 14 forms multiple vertical guide through holes 141, and the bottom surface of lower die 15 has mounting plate 16, mounting plate 16 to be in
In middle part installation groove 14, the bottom surface of mounting plate 16 be fixed with it is multiple be vertically directed bar 161, the bottom end for being vertically directed bar 161 is stretched
Go out the bottom surface of vertical guide through hole 141 and be fixed with limiting plate 162, is vertically directed the portion that bar 161 stretches out vertical guide through hole 141
Divide and be inserted with buffer spring 163, limiting plate 162 is put forth effort in the bottom end of buffer spring 163, and the top of buffer spring 163 is put forth effort on
The top surface of lateral straight slot 13；
The middle top surface of the top plate of the upper support frame 11 is fixed with punching press oil cylinder 111, and the push rod of punching press oil cylinder 111 passes through
The top plate of upper support frame 11 is simultaneously fixed with pressed sheet 112, and the bottom surface of pressed sheet 112 is fixedly arranged in the middle of upper mold 113, at upper mold 113
In the surface of lower die 15；
The left part and right part of the top surface of the top plate of the upper support frame 11 are fixed with compressed oil cylinder 114, two compressed oil cylinders
114 push rod, which passes through the bottom surface of the top plate of upper support frame 11 and is fixed with rectangle, compresses frame 115, and rectangle compresses frame 115 and is in down
The surface of fixed seat 12.
Further, multiple guide rods 116 are fixed on the top surface of the pressed sheet 112,116 sleeve of guide rod is upper
On the top plate of supporting rack 11.
Further, the bottom surface of the rectangle compression frame 115 is fixed with protection elastic layer 117.
Further, it is fixed with guide sleeve 142 on the madial wall of the vertical guide through hole 141, is vertically directed bar 161
Sleeve is in guide sleeve 142.
Further, the top surface edge of the lower fixed seat 12 forms circular arc chamfering 121.
Further, the top of the madial wall of the middle part installation groove 14 has Inner arc chamfering 143.
Further, swallow-tail form sliding block 371 is fixed on the rear surface of the fine adjustment block 37, swallow-tail form sliding block 371 is inserted
It is sleeved in the swallow tail shaped slot 311 having on the front face of main vertical plate 31.
Further, Slideslip self-lubricating block 39, Slideslip self-lubricating are fixed on the rear surface of the elevator 30
Block 39 is close on the front face for being oriented to vertical plate 27.
When the present embodiment is in use, corresponding upper roll body 38 and lower roll body 32 are passed through by the copper strips in blowing cylinder 100
Between after by the top surface of lower fixed seat 12 be wound up into receipts after between another corresponding upper roll body 38 and lower roll body 32
In barrel body 200, run by lift adjustment main motor 281, can with the overall height of adjusting upper roll body 38 and lower roll body 32,
Ensure that the position of the copper strips of conveying is at the top surface of lower fixed seat 12, and finely tunes the operation of motor 34 by lifting, it can
With the high and low position of adjusting upper roll body 38, ensures that copper strips is between roll body 38 and lower roll body 32, pass through upper roll body 38
Overall movement with lower roll body 32 can adjust rate of tension, and pass through 38 high high adjustment of upper roll body, it is ensured that copper strips is clamped in
It is conveyed between upper roll body 38 and lower roll body 32, then, is pushed by the push rod of compressed oil cylinder 114 so that rectangle compresses frame
115 are pressed against on the top surface of copper strips, and copper strips is fixed, and then, are quickly pushed downwards by the push rod of punching press oil cylinder 111 so that
Upper mold 113 is pressed against on copper strips and copper strips is pressed into lower die 15 so that lower die 15 declines and by copper strips punch forming, so
Afterwards, the push rod of compressed oil cylinder 114 and punching press oil cylinder 111 bounces back, and passes through, and the screen resilience of buffer spring 163 promotes lower die 15
Return, at this point, the quick rebound of profiled part in lower die 15 due to lower die 15, to be loosened in lower die 15, to convenient
Discharging, will not holding in the groove of lower die 15, it is very convenient.
And circular arc chamfering 121 and Inner arc chamfering 143 can ensure that rectangle compresses frame 115 and is pressed against on the top surface of copper strips
When, it will not be impaired in edge when being compressed between copper strips and the top surface of lower fixed seat 12.
Claims (8)
1. a kind of punch forming mechanism with copper strips automatic adjustment, including rack (10), it is characterised in that：The rack (10)
The top surface of top plate be fixedly arranged in the middle of upper support frame (11), it is perpendicular that conveying is fixed at left and right sides of the top surface of the top plate of rack (10)
It is respectively and fixedly provided with rotation on the lateral wall of straight panel (20) and winding vertical plate (21), conveying vertical plate (20) and winding vertical plate (21)
The output shaft of motor (22), electric rotating machine (22) passes through corresponding conveying vertical plate (20) or winding vertical plate (12) and is fixed with
The front face of butterfly (23), butterfly (23) is fixedly arranged in the middle of support shaft (24), blowing cylinder (100) and rewinding cylinder
Body (200) is placed on corresponding support shaft (24), and the raised positioning strip sleeve having on the side wall of support shaft (24) exists
In the positioning groove having on the madial wall of corresponding blowing cylinder (100) or rewinding cylinder (200), the end of support shaft (24)
Portion is spirally connected there are two location nut (25), and a location nut (25) is pressed against corresponding blowing cylinder (100) or rewinding cylinder
(200) on end face, two location nuts (25) are mutually pressed against；
On the top plate of rack (10) between the conveying vertical plate (20) or winding vertical plate (21) and upper support frame (11)
It is fixed with guiding and adjusts support plate (26), the rear portion top surface for being oriented to adjusting support plate (26) is fixed with guiding vertical plate (27), leads
It is fixed with upper guiding horizontal plate (28) to the top surface of vertical plate (27), the bottom end for being vertically directed screw rod (29) is existed by bearing hinge connection
It is oriented to and adjusts on support plate (26), be vertically directed the top of screw rod (29) by bearing hinge connection on upper guiding horizontal plate (28),
The top surface of upper guiding horizontal plate (28) is fixed with lift adjustment main motor (281), and the output shaft of lift adjustment main motor (281) is
Splined shaft, in the splined hole that the top for being vertically directed screw rod (29) has, elevator (30) is screwed onto vertically splined shaft sleeve
In guide spiro rod (29), elevator (30) is fixedly arranged at the front end with main vertical plate (31), and the lower front wall face of main vertical plate (31) is logical
Crossing bearing hinge connection has lower roll body (32), the top surface of main vertical plate (31) to be fixed with main level board (33), upper main level board (33)
Top surface be fixed with lifting fine tuning motor (34), the output shaft of lifting fine tuning motor (34), which passes through, upper main level board (33) and to be passed through
Shaft coupling is connected with fine tuning swivel nut (35), and the bottom end of fine tuning swivel nut (35) is bolted with fine tuning screw rod (36), fine tuning screw rod (36)
Bottom end is fixed with fine adjustment block (37), and the front end face of fine adjustment block (37) has a upper roll body (38) by bearing hinge connection, upper roll body (38) and
Lower roll body (32) corresponds to up and down；
The top surface of the top plate of rack (10) is fixedly arranged in the middle of lower fixed seat (12), has laterally in the middle part of the bottom surface of lower fixed seat (12)
There is middle part installation groove (14), lower die (15) sleeve to be installed at middle part recessed at the top surface middle part of straight slot (13), lower fixed seat (12)
In slot (14), the bottom surface of middle part installation groove (14) forms multiple vertical guide through holes (141), and there is peace in the bottom surface of lower die (15)
Loading board (16), mounting plate (16) are in middle part installation groove (14), and the bottom surface of mounting plate (16) is fixed with multiple be vertically directed
Bar (161), the bottom end for being vertically directed bar (161) stretch out the bottom surface of vertical guide through hole (141) and are fixed with limiting plate (162),
The part for being vertically directed bar (161) stretching vertical guide through hole (141) is inserted with buffer spring (163), buffer spring (163)
Limiting plate (162) is put forth effort in bottom end, and the top surface of lateral straight slot (13) is put forth effort on the top of buffer spring (163)；
The middle top surface of the top plate of the upper support frame (11) is fixed with punching press oil cylinder (111), and the push rod of punching press oil cylinder (111) is worn
It crosses the top plate of upper support frame (11) and is fixed with pressed sheet (112), the bottom surface of pressed sheet (112) is fixedly arranged in the middle of upper mold (113),
Upper mold (113) is in the surface of lower die (15)；
The left part and right part of the top surface of the top plate of the upper support frame (11) are fixed with compressed oil cylinder (114), two compressed oil cylinders
(114) push rod, which passes through the bottom surface of the top plate of upper support frame (11) and is fixed with rectangle, compresses frame (115), and rectangle compresses frame
(115) it is in the surface of lower fixed seat (12).
2. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：The punching press
Multiple guide rods (116) are fixed on the top surface of plate (112), guide rod (116) sleeve is on the top plate of upper support frame (11).
3. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：The rectangle
The bottom surface for compressing frame (115) is fixed with protection elastic layer (117).
4. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：It is described vertical
It is fixed with guide sleeve (142) on the madial wall of guide through hole (141), is vertically directed bar (161) sleeve in guide sleeve (142).
5. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：It is described lower solid
The top surface edge of reservation (12) forms circular arc chamfering (121).
6. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：The middle part
The top of the madial wall of installation groove (14) has Inner arc chamfering (143).
7. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：The fine tuning
Swallow-tail form sliding block (371), antetheca of swallow-tail form sliding block (371) sleeve in main vertical plate (31) are fixed on the rear surface of block (37)
In the swallow tail shaped slot (311) having on face.
8. a kind of punch forming mechanism with copper strips automatic adjustment according to claim 1, it is characterised in that：The lifting
Slideslip self-lubricating block (39) is fixed on the rear surface of block (30), Slideslip self-lubricating block (39) is close to be oriented to vertical plate (27)
Front face on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810838161.6A CN108787838A (en) | 2018-07-26 | 2018-07-26 | A kind of punch forming mechanism with copper strips automatic adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810838161.6A CN108787838A (en) | 2018-07-26 | 2018-07-26 | A kind of punch forming mechanism with copper strips automatic adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108787838A true CN108787838A (en) | 2018-11-13 |
Family
ID=64077947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810838161.6A Withdrawn CN108787838A (en) | 2018-07-26 | 2018-07-26 | A kind of punch forming mechanism with copper strips automatic adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108787838A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531044A (en) * | 2020-05-13 | 2020-08-14 | 泰州市双宇汽车零部件有限公司 | Stamping device for automobile part machining and stamping method thereof |
| CN112024714A (en) * | 2020-08-14 | 2020-12-04 | 马鞍山茂丰重工机械制造有限公司 | Full-automatic cartridge case production line |
| CN112024751A (en) * | 2019-06-04 | 2020-12-04 | 周李楠 | Stamping feeding structure with adjusting structure |
| CN113042615A (en) * | 2021-03-16 | 2021-06-29 | 江西江冶实业有限公司 | Punching machine for narrow copper strip |
-
2018
- 2018-07-26 CN CN201810838161.6A patent/CN108787838A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112024751A (en) * | 2019-06-04 | 2020-12-04 | 周李楠 | Stamping feeding structure with adjusting structure |
| CN111531044A (en) * | 2020-05-13 | 2020-08-14 | 泰州市双宇汽车零部件有限公司 | Stamping device for automobile part machining and stamping method thereof |
| CN112024714A (en) * | 2020-08-14 | 2020-12-04 | 马鞍山茂丰重工机械制造有限公司 | Full-automatic cartridge case production line |
| CN113042615A (en) * | 2021-03-16 | 2021-06-29 | 江西江冶实业有限公司 | Punching machine for narrow copper strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181113 |
|
| WW01 | Invention patent application withdrawn after publication |