CN107745399A - A kind of automatic mechanism that draws sword of automatic splitting machine - Google Patents
A kind of automatic mechanism that draws sword of automatic splitting machine Download PDFInfo
- Publication number
- CN107745399A CN107745399A CN201711096528.3A CN201711096528A CN107745399A CN 107745399 A CN107745399 A CN 107745399A CN 201711096528 A CN201711096528 A CN 201711096528A CN 107745399 A CN107745399 A CN 107745399A
- Authority
- CN
- China
- Prior art keywords
- automatic
- fixed
- motor
- plate
- cutter
- 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- Withdrawn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
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
- B26D1/15—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member
- B26D1/151—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
- B26D7/2621—Means for mounting the cutting member for circular cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
- B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses automatic draw sword mechanism, including support frame, mounting bracket, driving shaft, multiple hob cutter mechanisms, slipping mechanism and the first motor of a kind of automatic splitting machine；The back side of mounting bracket is disposed with mould rack and slide rail from top to bottom；Hob cutter mechanism includes pair of sliding block, the clutch shaft bearing being installed on sliding shoe, the first sprocket between pair of sliding block, the second sprocket, chain, hobboing cutter fixing axle and hobboing cutter；Slipping mechanism includes the second motor, motor mounting plate, gear, range sensor and ring set, and ring set one end is installed on clutch shaft bearing, and the other end is fixed on the front of motor mounting plate；Position on motor mounting plate corresponding to slide rail is provided with the sliding block being slidably matched with slide rail.The automatic mechanism that draws sword of the present invention, the automatic calibration of hobboing cutter position can be realized, the precision cut and automaticity are high.
Description
Technical field
The present invention relates to automatic cutting apparatus field, and in particular to a kind of automatic mechanism that draws sword of automatic splitting machine.
Background technology
Cutting machine is a kind of machine that the materials such as the big volume paper of wide cut, film, non-woven fabrics are cut into the narrow roll of material of wide cut
Tool equipment, it is usually used in papermaking equipment and printing packaging machinery and paper web production.
Current cutting machine, its cutting knife is largely to be fixed, therefore the material of one fixed width can only be cut into, it is difficult to full
The demand produced and processed enough；Occur adjustable cutting knife in some cutting machines, but the regulation of cutting knife needs artificial progress,
It can not be calibrated, cause the precision that cuts and automaticity low.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of automatic mechanism that draws sword of automatic splitting machine, hobboing cutter position can be realized
The automatic calibration put, the precision cut is high, and automaticity is high.
In order to solve the above-mentioned technical problem, the invention provides a kind of automatic mechanism that draws sword of automatic splitting machine, including branch
Support frame frame, mounting bracket, driving shaft, multiple hob cutter mechanisms, slipping mechanism and the first motor；
The support frame includes two pairs of support shafts being oppositely arranged, and a supporting plate, institute are respectively and fixedly provided with each pair support shaft
The both sides for stating mounting bracket are fixed in the supporting plate, and the back side of the mounting bracket is disposed with mould rack and cunning from top to bottom
Rail；
The hob cutter mechanism includes pair of sliding block, the clutch shaft bearing being installed on sliding shoe, positioned at the pair of slip
The first sprocket between block, the second sprocket, chain, hobboing cutter fixing axle and hobboing cutter；First sprocket and sliding shoe
In offer the polygonal through hole to communicate with each other；In the hobboing cutter fixing axle back-up ring, the fixation are fixed integrally formed with one
The side of back-up ring is circumferentially uniformly provided with multiple screwed holes, second sprocket and hobboing cutter be located in hobboing cutter fixing axle and
The both sides of fixed back-up ring are separated from, the hobboing cutter, which is connected through a screw thread, to be fixed on the fixed back-up ring, second sprocket
It is fixed on by key connection in the hobboing cutter fixing axle；The chain is engaged in the first sprocket and the second sprocket respectively；
The cross sectional shape of the driving shaft matches with the polygonal through hole, and is connected in the polygonal through hole,
Its both ends is rotatably connected in the pair of supporting plate respectively, and first motor is used to drive spindle rotation；
The slipping mechanism includes the second motor, motor mounting plate, gear, range sensor and ring set, the motor
Installing plate is located at the back side of mounting bracket, and second motor is fixed on the back side of motor mounting plate, and the main shaft of the second motor passes through
The motor mounting plate, the gear are installed on the main shaft, and are engaged on the mould rack；The range sensor is set
It is placed on motor mounting plate, for detecting the distance between adjacent two hob cutter mechanism；Described ring set one end is installed on clutch shaft bearing
On, the other end is fixed on the front of motor mounting plate；Position on the motor mounting plate corresponding to slide rail is provided with and slide rail
The sliding block being slidably matched.
In the preferred embodiment of the present invention, the polygonal through hole is hexagon through hole.
In the preferred embodiment of the present invention, the hob cutter mechanism also includes a pair of cutter bearing fixed plates, described
The both ends of cutter bearing fixed plate are connected to end and the hobboing cutter fixing axle of sliding shoe by second bearing and 3rd bearing respectively
On end.
In the preferred embodiment of the present invention, pass through the first connection between the pair of cutter bearing fixed plate respectively
Block and the connection of the second contiguous block, and the first contiguous block and the second contiguous block are respectively positioned at the upper of the pair of cutter bearing fixed plate
Lower both sides.
In the preferred embodiment of the present invention, a tailing pressing plate, the tailing are fixed with second contiguous block
Pressing plate extends towards the side of hobboing cutter；Escape groove is offered on the tailing pressing plate, a part for the hobboing cutter is kept away through described
Groove is allowed to the back side of tailing pressing plate.
In the preferred embodiment of the present invention, first contiguous block is provided with two engaging lugs, two engaging lug
Between be provided with a bearing pin, be pivotally connected a floating junction on the bearing pin；A cylinder, the cylinder are articulated with the motor mounting plate
For promoting the floating junction.
In the preferred embodiment of the present invention, servo drag chain support plate is fixed with the motor mounting plate.
In the preferred embodiment of the present invention, servo drag chain supporting plate is installed on support frame as described above.
In the preferred embodiment of the present invention, the back side of the mounting bracket is provided with the rack fixed plate of L-type, described
Mould rack is arranged in the rack fixed plate.
The automatic mechanism that draws sword of the present invention, is axially drawn close and disperseed along slide rail by the second motor driven hob cutter mechanism, matched somebody with somebody
Range sensor is closed, the position correction of hobboing cutter can be achieved, and the precision and automaticity cut is high, improves the work of cutting machine
Make efficiency.
Brief description of the drawings
Fig. 1 is the positive structure schematic of the automatic mechanism that draws sword of one embodiment of the present invention；
Fig. 2 is the structure schematic diagram of mechanism of being drawn sword automatically in Fig. 1；
Fig. 3 is the structural representation of hob cutter mechanism in Fig. 1；
Fig. 4 is the exploded perspective view of hob cutter mechanism in Fig. 3；
Fig. 5 is the side structure schematic diagram of mechanism of being drawn sword automatically in Fig. 1；
Fig. 6 is the connection diagram of hob cutter mechanism and motor fixing plate；
Wherein：1st, support frame；11st, support shaft；12nd, supporting plate；13rd, removable cartridge；14th, fixed end cap；2nd, install
Frame；21st, aluminium section bar；22nd, servo drag chain supporting plate；23rd, rack fixed plate；24th, mould rack；25th, slide rail；3rd, hob cutter mechanism；31st, it is main
Moving axis；32nd, sliding shoe；321st, clutch shaft bearing；331st, the first sprocket；332nd, the second sprocket；333rd, chain；34th, hobboing cutter is solid
Dead axle；341st, fixed back-up ring；35th, cutter bearing fixed plate；351st, lightening hole；352nd, end ring；353rd, second bearing；354、
3rd bearing；36th, hobboing cutter；37th, the first contiguous block；371st, engaging lug；372nd, bearing pin；373rd, floating junction；38th, the second connection
Block；39th, tailing pressing plate；391st, escape groove；4th, slipping mechanism；41st, motor mounting plate；42nd, sliding block；43rd, planetary gear reducing motor；
44th, servo drag chain support plate；45th, range sensor fixed plate；46th, cylinder；47th, range sensor；48th, ring set；49th, gear.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
More fully understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment
Refer to Fig. 1, automatic draw sword mechanism, including the support frame 1 of a kind of automatic splitting machine of the invention, mounting bracket 2,
Multiple hob cutter mechanisms 3, driving shaft 31, the motor (not shown) of slipping mechanism 4 and first；
Specifically, support frame 1 includes two pairs of support shafts 11 being oppositely arranged, one is respectively and fixedly provided with each pair support shaft 11
Fagging 12, it is preferred that supporting plate 12 is installed in support shaft 11 by several removable cartridges 13, convenient to adjust supporting plate 12
Setting height(from bottom).
Mounting bracket 2 is in rectangular-shape, and its both sides is fixed in supporting plate 12；Preferably, mounting bracket 2 is by light high-strength gold
Category material is prepared, and in the present embodiment, mounting bracket 2 is to be connected to be formed from beginning to end by more aluminium section bars 21.The top of mounting bracket 2
Servo drag chain supporting plate 22 is fixed with, the back side for the aluminium section bar 21 for being located at bottom in mounting bracket 2 is disposed with L-type from top to bottom
Rack fixed plate 23 and slide rail 25, mould rack 24 is fixed with the rack fixed plate 23.
Referring to Fig. 3-4, hob cutter mechanism 3 includes pair of sliding block 32, the clutch shaft bearing 321 being installed on sliding shoe 32,
The first sprocket 331 between pair of sliding block 32, the second sprocket 332, chain 333, hobboing cutter fixing axle 34 and rolling
Knife 36；The polygonal through hole to communicate with each other, the cross sectional shape of driving shaft 31 are offered in first sprocket 331 and sliding shoe 32
Match with polygonal through hole, and be connected in polygonal through hole, its both ends is rotatably connected in supporting plate by fixed end cap 14
On 12.Because driving shaft 31 and polygonal through hole cooperate, when driving shaft 31 rotates, 331 turns of the first sprocket can be driven
It is dynamic.In the present embodiment, polygonal through hole is hex hole；In other embodiments, the shape of polygonal hole is not limited to figure
Shown in, can also be quadrangle, pentagon etc..In hobboing cutter fixing axle 34 back-up ring 341, the fixation back-up ring are fixed integrally formed with one
341 side is circumferentially uniformly provided with multiple screwed holes, and the second sprocket 332 and hobboing cutter 36 are located in hobboing cutter fixing axle 34
And the both sides of fixed back-up ring 341 are separated from, hobboing cutter 36, which is connected through a screw thread, to be fixed on fixed back-up ring 341, the second sprocket 332
It is fixed on by key connection in hobboing cutter fixing axle 34；Chain 333 is engaged in the first sprocket 331 and the second sprocket 332 respectively
On.When driving shaft 31 rotates, the first sprocket 331 is driven to rotate, then rotation is transferred into the second sprocket by chain 333
On 332, and then drive hobboing cutter fixing axle 34 and hobboing cutter 36 to rotate, realize the cutting to air-cushion film.
Preferably, hob cutter mechanism 3 also includes a pair of cutter bearing fixed plates 35, the both ends difference of cutter bearing fixed plate 35
The end being connected to by second bearing 353 and 3rd bearing 354 on the end and hobboing cutter fixing axle 34 of sliding shoe 32.This implementation
In example, second bearing 353 is installed on the end of sliding shoe 32, and the both ends of hobboing cutter fixing axle 34 are respectively provided with a Step Shaft, and the 3rd
Bearing 354 is installed at above-mentioned Step Shaft.In order to preferably fix second bearing 353, in cutter bearing fixed plate 35 and
The outside of the junction of two bearings 353 is provided with end ring 352.In the present embodiment, offered in cutter bearing fixed plate 35
Multiple lightening holes 351, to mitigate the weight of cutter bearing fixed plate 35.In order to preferably fix a pair of cutter bearing fixed plates
35, it is preferred that the both sides up and down of cutter bearing fixed plate 35 are respectively equipped with the first contiguous block 37 and the second contiguous block 38, and first connects
The both ends for connecing the contiguous block 38 of block 37 and second are screwed in cutter bearing fixed plate 35 respectively, so as to by a pair of hobboing cutters
Bearing (setting) plate 35 links together.Wherein, engaging lug 371 and bearing pin 372 are additionally provided with the first contiguous block 37, on bearing pin 372
It is articulated with floating junction 373.During in order to prevent from cutting air-cushion film, air-cushion film produces folding or fold, preferably in the second connection
A L-shaped tailing pressing plate 39 is fixed with block 38, and tailing pressing plate 39 extends towards the side of hobboing cutter 36；On tailing pressing plate 39
Escape groove 391 is offered, a part for hobboing cutter 36 passes through escape groove 391 to the back side of tailing pressing plate 39.When cutting air-cushion film,
Tailing pressing plate 39 is avoided that air-cushion film produces folding or fold.
Fig. 2, Fig. 5 and Fig. 6 are referred to, slipping mechanism 4 includes the second motor, motor mounting plate 41, gear 49, Distance-sensing
Device 47 and ring set 48, motor mounting plate 41 are located at the back side of mounting bracket 2, and the second motor is fixed on the back of the body of motor mounting plate 41
Face, the main shaft of the second motor pass through motor mounting plate 41, and gear 49 is installed on main shaft, and is engaged on mould rack 24；This reality
Apply in example, the second motor is planetary gear reducing motor 43.Range sensor 47 is arranged on motor mounting plate 41, for detecting phase
The distance between adjacent two hob cutter mechanisms 3, prevent the hypotelorism of hobboing cutter 36, influence to cut air-cushion film；Preferably, motor mounting plate 41
It is provided with the range sensor fixed plate 45 of mounting distance sensor 47.The one end of ring set 48 is installed on clutch shaft bearing 321, another
The front of motor mounting plate 41 is fixed at end, therefore when motor mounting plate 41 slides along slide rail 25, can be driven by ring set 48
Hob cutter mechanism 3 moves.Position on motor mounting plate 41 corresponding to slide rail 25 is provided with the sliding block 42 being slidably matched with slide rail 25.
A cylinder 46 is also articulated with motor mounting plate 41, the cylinder 46 is used to promote floating junction 373.Preferably, motor is installed
Servo drag chain support plate 44 is further fixed on plate 41.
When the automatic mechanism that draws sword of the present embodiment works, the planetary gear reducing motor 43 in slipping mechanism 4 each first starts,
By the cooperation between gear 49 and mould rack 24, drive motor installing plate 41 slides along slide rail 25, and then drives each hobboing cutter machine
Structure 3 is mutually drawn close, so as to realize the calibration of the position of hob cutter mechanism 3；Then planetary gear reducing motor 43 drives each phase of hob cutter mechanism 3
Mutually scatter so that the distance between adjacent hob cutter mechanism 3 is equal to the distance of setting；Then the first electric motor starting, driving shaft is driven
31 rotate, and then drive the hobboing cutter 36 of each hob cutter mechanism 3 to rotate；Finally, the piston rod top pressure floating junction 373 of cylinder 46 so that
Hob cutter mechanism 3 moves downward, so as to realize the cutting for the air-cushion film for being pointed to the lower section of hobboing cutter 36.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (9)
1. the automatic mechanism that draws sword of a kind of automatic splitting machine, it is characterised in that multiple including support frame, mounting bracket, driving shaft
Hob cutter mechanism, slipping mechanism and the first motor；
The support frame includes two pairs of support shafts being oppositely arranged, and a supporting plate, the peace are respectively and fixedly provided with each pair support shaft
The both sides shelved are fixed in the supporting plate, and the back side of the mounting bracket is disposed with mould rack and slide rail from top to bottom；
The hob cutter mechanism includes pair of sliding block, the clutch shaft bearing being installed on sliding shoe, positioned at the pair of sliding shoe it
Between the first sprocket, the second sprocket, chain, hobboing cutter fixing axle and hobboing cutter；In first sprocket and sliding shoe
Offer the polygonal through hole to communicate with each other；In the hobboing cutter fixing axle back-up ring, the fixed back-up ring are fixed integrally formed with one
Side be circumferentially uniformly provided with multiple screwed holes, second sprocket and hobboing cutter are located in hobboing cutter fixing axle and discrete
In the both sides of fixed back-up ring, the hobboing cutter, which is connected through a screw thread, to be fixed on the fixed back-up ring, and second sprocket passes through
Key connection is fixed in the hobboing cutter fixing axle；The chain is engaged in the first sprocket and the second sprocket respectively；
The cross sectional shape of the driving shaft matches with the polygonal through hole, and is connected in the polygonal through hole, and it two
End is rotatably connected in the pair of supporting plate respectively, and first motor is used to drive spindle rotation；
The slipping mechanism includes the second motor, motor mounting plate, gear, range sensor and ring set, the motor installation
Plate is located at the back side of mounting bracket, and second motor is fixed on the back side of motor mounting plate, and the main shaft of the second motor is described in
Motor mounting plate, the gear are installed on the main shaft, and are engaged on the mould rack；The range sensor is arranged at
On motor mounting plate, for detecting the distance between adjacent two hob cutter mechanism；Described ring set one end is installed on clutch shaft bearing, separately
The front of motor mounting plate is fixed in one end；Position on the motor mounting plate corresponding to slide rail, which is provided with to slide with slide rail, matches somebody with somebody
The sliding block of conjunction.
2. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 1, it is characterised in that the polygonal through hole is six
Angular through hole.
3. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 1, it is characterised in that the hob cutter mechanism also includes
A pair of cutter bearing fixed plates, the both ends of the cutter bearing fixed plate are connected to cunning by second bearing and 3rd bearing respectively
End on the end and hobboing cutter fixing axle of motion block.
4. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 1, it is characterised in that the pair of cutter bearing is consolidated
Connected respectively by the first contiguous block and the second contiguous block between fixed board, and the first contiguous block and the second contiguous block are located at institute respectively
State the both sides up and down of a pair of cutter bearing fixed plates.
5. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 4, it is characterised in that solid on second contiguous block
Surely there is a tailing pressing plate, the tailing pressing plate extends towards the side of hobboing cutter；Escape groove is offered on the tailing pressing plate, it is described
A part for hobboing cutter passes through the escape groove to the back side of tailing pressing plate.
6. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 4, it is characterised in that set on first contiguous block
There are two engaging lugs, a bearing pin is provided between two engaging lug, a floating junction is pivotally connected on the bearing pin；The motor mounting plate
On be articulated with a cylinder, the cylinder is used to promote the floating junction.
7. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 1, it is characterised in that solid on the motor mounting plate
Surely there is servo drag chain support plate.
8. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 1, it is characterised in that be provided with support frame as described above
Servo drag chain supporting plate.
9. the automatic mechanism that draws sword of automatic splitting machine as claimed in claim 1, it is characterised in that the back side peace of the mounting bracket
Rack fixed plate equipped with L-type, the mould rack are arranged in the rack fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096528.3A CN107745399A (en) | 2017-11-09 | 2017-11-09 | A kind of automatic mechanism that draws sword of automatic splitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096528.3A CN107745399A (en) | 2017-11-09 | 2017-11-09 | A kind of automatic mechanism that draws sword of automatic splitting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107745399A true CN107745399A (en) | 2018-03-02 |
Family
ID=61252142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711096528.3A Withdrawn CN107745399A (en) | 2017-11-09 | 2017-11-09 | A kind of automatic mechanism that draws sword of automatic splitting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107745399A (en) |
-
2017
- 2017-11-09 CN CN201711096528.3A patent/CN107745399A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180302 |