CN106862420A - A kind of bending mechanism of bender - Google Patents
A kind of bending mechanism of bender Download PDFInfo
- Publication number
- CN106862420A CN106862420A CN201710185182.8A CN201710185182A CN106862420A CN 106862420 A CN106862420 A CN 106862420A CN 201710185182 A CN201710185182 A CN 201710185182A CN 106862420 A CN106862420 A CN 106862420A
- Authority
- CN
- China
- Prior art keywords
- movable head
- holding pad
- bending
- workpiece
- bender
- 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.)
- Pending
Links
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
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
-
- 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
- B21D43/003—Positioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
A kind of bending mechanism of bender, curved mould rotating mechanism including holding pad, the holding pad rotating mechanism of holding pad revolving part and the revolving part rotation of driving holding pad, bending mould device and driving bending mould device rotation, holding pad is connected on holding pad revolving part, the center of rotation of curved mould is connected on holding pad revolving part by bearing, curved mould rotating mechanism is fixed on holding pad revolving part, and holding pad is parallel with the curved template of bending mould device.It can easily, expeditiously various forms of workpiece of bending.
Description
Technical field
The present invention relates to a kind of bender, especially a kind of bending mechanism of bender.
Background technology
Bender is and the bending for by heat exchanger bending into G types, U-shaped or L-type, being the key equipment of heat exchanger shaping
Mechanism is then the critical piece of bender.
Existing heat exchanger workpiece bending process is to lie in a horizontal plane in carry out bending on working plate, and in bending
Feed device is to unclamp workpiece, and clamping workpiece again after the completion of a bending carries out feeding, then carries out second bending, so
Clamping is unclamped be required for the regular hour again, causes the used time of a working cycles more long, influences bending efficiency, especially in folding
What is showed on the more workpiece of curved number of times is especially prominent.And the type of heat exchanger workpiece is more, existing bending mechanism can not be fitted
Answer this situation.
The content of the invention
The technical problems to be solved by the invention are to overcome the drawbacks described above of prior art and propose a kind of folding of bender
Bender structure, its can easily, expeditiously various forms of heat exchanger workpiece of bending.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of bending mechanism of bender, its feature
It is：Including holding pad, holding pad revolving part and drive the holding pad rotating mechanism of holding pad revolving part rotation, bending mould device and
The curved mould rotating mechanism of bending mould device rotation, holding pad is driven to be connected on holding pad revolving part, the center of rotation of curved mould passes through
Bearing is connected on holding pad revolving part, and curved mould rotating mechanism is fixed on holding pad revolving part, holding pad and bending mould device
Curved template is parallel.
Because the rotation of holding pad and bending mould device uses two rotating mechanisms, therefore curved mould can both individually rotated,
Holding pad and curved mould can also be made to rotate simultaneously.
Preferably, above-mentioned holding pad rotating mechanism is the second servomotor, and curved mould rotating mechanism is the first servomotor, this
The distance of sample bending is easily controlled.
Preferably, above-mentioned servomotor also carries reducing gear, and the speed of such bending is easier control.
Above-mentioned holding pad also sets up holding pad mobile device, and holding pad is moved under the driving of holding pad mobile device, approached
Or away from workpiece, the distance between material-pressing rack and curved template can so can arbitrarily change, can facilitate removal workpiece or
The travelling workpiece in bending process.
Above-mentioned holding pad mobile device includes the 3rd servomotor and the 3rd decelerator, the output end connecting filament of decelerator
Bar, screw mandrel is set in the feed screw nut on material-pressing rack, is driven and mobile material-pressing rack by the 3rd servomotor, so that
Make holding pad close to or away from workpiece, it is so more steadily mobile.
Connected preferably by guiding mechanism between above-mentioned material-pressing rack and lower support member, such as guiding mechanism of slide rail type,
So movement is more balanced, and is rubbed smaller.
Preferably, movable head also is set on the workpiece feedstock direction of bending mould device, during workpiece bending, workpiece is by movable head
With bending mechanism clamping, movable head and bending mechanism synchronization action.
Above-mentioned movable head sets movable head transverse direction follower, is actively given by movable head transverse direction follower during workpiece bending
Power and make movable head and bending mechanism preferably synchronization action.
Above-mentioned movable head transverse direction follower includes movable head cylinder, and movable head cylinder piston rod is connected with movable head, with
Dynamic plate is arranged on arbitrary-movement articulator and guiding mechanism is set between movable head and arbitrary-movement articulator, by the flexible of piston rod, movable head
Under the guiding of guiding mechanism on arbitrary-movement articulator transverse shifting, by increasing capacitance it is possible to increase certain power, make preferably to be protected during workpiece bending
Hold synchronization.
Above-mentioned movable head also sets up the movable mechanism of movable head, and the movable mechanism of movable head can be in the longitudinal direction
Correct position is moved to, facilitates the turnover and adjustment of workpiece.
The movable mechanism of above-mentioned movable head includes the 4th servomotor with decelerator, and the output end of decelerator connects
Connect movable head screw mandrel, movable head screw mandrel is set in the movable head feed screw nut on arbitrary-movement articulator, movable head be arranged on
In moving frame, arbitrary-movement articulator is arranged on fuselage and sets arbitrary-movement articulator guiding mechanism therebetween, is driven by the 4th servomotor,
Arbitrary-movement articulator drives movable head close to or away from workpiece under the guiding of guiding mechanism, and above-mentioned arbitrary-movement articulator guiding mechanism is preferably slide
Sliding track mechanism, it is so mobile more steady reliable, rub smaller.
Above-mentioned movable head side also sets up the feed device of travelling workpiece, so workpiece more easily can be sent into bender
In structure.
Above-mentioned feed device includes rotary shafts and the movable stand being arranged on cradle, and movable stand is driven by movable stand
Device is driven, and guiding mechanism is set between movable stand and rotary shafts, so mobile more convenient, steadily.
Fixture for clamping workpiece is installed on above-mentioned movable stand, workpiece can firmly be clamped by fixture, prevent bending
During workpiece movement.
Compared with prior art, the advantage of the invention is that：(1) due to using two rotating mechanisms, therefore can both make
Curved mould individually rotates, it is also possible to holding pad and curved mould is rotated simultaneously, can improve bending precision, curved mould can again individually turned round
It is convenient to reset, it is easy to the multiple bending of workpiece, improve the bending efficiency of bending workpieces.
(2) different thickness, different number of plies heat exchangers can be adapted to due to holding pad Tape movement device, during binder to clamp, is adapted to
Property is wide.
(3) by movable head and its governor motion, friction during workpiece bending can be reduced, improves workpiece quality.
Brief description of the drawings
Fig. 1 is the structural representation that embodiment of the present invention bender bending mechanism omits holding pad mechanism.
Fig. 2 is the top view comprising holding pad mechanism and movable head mechanism in Fig. 1.
Fig. 3 is applied to the stereogram of its second working plate elevating mechanism in bender for the embodiment of the present invention.
Fig. 4 is the stereogram of bending initial state when the embodiment of the present invention is applied to bender.
Fig. 5 is the stereogram in embodiment of the present invention bender bending process.
Fig. 6 is the another state diagram in embodiment of the present invention bender bending process.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, the bending mechanism of bender, its curved mould rotating mechanism is the first servomotor with the first decelerator
203, curved mould 2 is installed in the end of the first reducer output shaft 207 of the first servomotor 203, and output shaft 207 is by bearings curved
In mold shaft set 205, the first servomotor 203 is fixed on curved mold shaft and covers on 205 by adpting flange 206, therefore the first servo electricity
Machine 203 can be operated alone axle shaft 207 and rotate, so that drive the curved mould 2 being fixed on output shaft 207 to rotate, and curved mold shaft
Set 205 is not rotated, i.e., holding pad is not rotated.
Holding pad rotating mechanism includes the second servomotor 202 with the second decelerator, and the second servomotor 202 is arranged on
On installing plate 209, installing plate 209 is fixed on the fuselage 1, and fixed seat 208 is fixed on installing plate 209, and curved mold shaft set 205 passes through
In fixed seat 208, holding pad 3 is fixed on rotating panel 305 (referring to Fig. 2) bearings, and rotating panel 305 is by transmission
Gear 308 is fixed with curved mold shaft set 205, and travelling gear 308 is engaged with another travelling gear 204, and another travelling gear 204 is fixed
On the output shaft of the second decelerator, so when the second servomotor 202 works, by another travelling gear 204, driving cog
Wheel 308 is rotated panel 305 and moves, so that drive the holding pad for being fixed on rotating panel 305 to rotate, as well as drive
The rotation of curved mold shaft set 205, curved mold shaft set 205 is rotated and causes that adpting flange 206 drives first servomotor 203 and its slows down
Device is rotated, and then makes its output shaft 207 drive curved mould 2 to rotate, i.e., curved template 201 and the synchronous axial system of holding pad 3.
Holding pad 301 is fixed on material-pressing rack 302 in the present embodiment, and holding pad and material-pressing rack may be alternatively configured one.
As shown in Fig. 2 also set up holding pad mobile device for removing holding pad 3, holding pad mobile device includes band the
3rd servomotor 301 of three decelerators, the output end connection holding pad screw mandrel 306 of the 3rd decelerator, holding pad screw mandrel 306 is worn
It is placed in the feed screw nut 307 on material-pressing rack 302, is driven by the 3rd servomotor, material-pressing rack 302 and installs thereon
Holding pad 3 pass through the slide rail 304 installed below and moved forward and backward in the slide 303 being fixed on rotating panel 305, approach
Or away from workpiece 5.
As shown in Fig. 2 movable head 4 is driven by movable head or so follower, it is therefore an objective to make the work being placed on movable head 4
Part 5 has a thrust forward, and friction during reducing workpiece bending between workpiece 5 and movable head 4 improves the bending matter of workpiece
Amount.
Movable head of the present embodiment or so follower drives includes cylinder 407, slide rail 408, slide 409, cylinder 407
Piston rod is connected with movable head 4, is connected by sliding connector between the arbitrary-movement articulator 406 of movable head 4 and support movable head 4, leads to
The flexible of piston rod is crossed, movable head 4 is by slide rail 408 fixed thereon along the longitudinal direction of slide 409 on arbitrary-movement articulator 406
It is servo-actuated.
Movable head 4 is also driven by drive mechanism before and after movable head 401, adjusts its distance with curved intermode, facilitates workpiece to enter
Go out curved mould and ensure to clamp workpiece during bending workpieces.
Drive mechanism 401 includes the 4th servomotor and the 4th decelerator before and after the movable head of the present embodiment, decelerator
Output end connection movable head drive screw 402, movable head drive screw 402 is set in the movable head on arbitrary-movement articulator 406
In drive screw nut 403, connected by sliding connector between arbitrary-movement articulator 406 and the fuselage 1 for supporting it, by the 4th servo electricity
Machine drives, and arbitrary-movement articulator 406 drives the slide 405 that movable head 4 is installed by the lower section of arbitrary-movement articulator 406 along installing on the fuselage 1
Slide rail 404 is moved forward and backward, and close to or away from workpiece 5, is discharged workpiece 5 or is clamped workpiece 5 together with curved mould 2, sees Fig. 2.
Above-mentioned feed device is located at the right side of fuselage 1, including rotary shafts 6, and movable stand 602, movable stand are set in rotary shafts 6
602 lower sections are provided with slide 605, and servo drive 601 drives movable stand 602, and movable stand 602 is by slide 605 along peace
The transverse shifting of slide rail 606 in rotary shafts 6.
Clamping jaw 603 and 604 for clamping workpiece 5 is installed, clamping jaw 603 and 604 is in whole bending process in rotary shafts 6
In clamp workpiece all the time, can just be unclamped when workpiece is removed after the completion of bending.
So that the bending mechanism of this bender is applied to vertical bending machine as an example, this is illustrated by bending individual layer G shapes workpiece
The bending process and feature of bending mechanism.
The bending mechanism of this bender is arranged on the working plate of fuselage 1, and described working plate is divided into two parts, i.e.,
First working plate 101 and the second working plate 102, the first working plate 101 fix motionless on the fuselage 1, the second workbench
Plate 102 can be moved up and down relative to fuselage 1, see Fig. 3, Fig. 4.
The second working plate elevating mechanism is fixed on the second work including a working plate lift cylinder 103, four
Make the working plate guide post 104 and four fixations of the lower section of platen 102 working plate guide bearing chock 105 on the fuselage 1, work
Make the piston rod of bedplate up-down cylinder 103 to be connected with the second working plate 102, by the flexible of cylinder piston rod, the second workbench
Sliding of the plate 102 by four guide posts 104 in four guide bearing chocks 105 is moved up and down relative to fuselage, sees Fig. 4.
The second working plate 102 will rise after the completion of single bending, be in plane on working plate 101 and cradle 6 same
One horizontal plane, supports workpiece 5.
During bending workpieces, the front and back position of holding pad 3 and movable head 4 is adjusted first, heat exchanger workpiece 5 is placed vertically
On working plate, and workpiece 5 is clamped with clamping jaw 603 and 604, be automatically positioned, now state is as shown in figure 4, holding pad 3
Workpiece 5 is clamped with curved template 201, the second working plate 102 declines, the second servomotor drives holding pad 3 and curved mould 2 and thereon
Curved template 201 rotate carry out first time bending together, state after the completion of first time bending is as shown in figure 5, then the first servo
Motor drives curved mould 2 and curved template 201 thereon to continue on after equidirectional is rotated by 90 °, the band dynamic pressure again of the second servomotor
Flitch 3 and curved mould 2 and curved template 201 thereon rotate backward 90 ° together, and the second working plate 102 rises and worked with first
Platen is in same plane, and feed device 6 carries out feeding, is sent to second bending position, and curved template 201 continues opposite direction rotation
90 °, now state as shown in fig. 6, circulate, three bendings of completion remove workpiece after working in this way.
The bending mechanism of this bender can be additionally used in horizontal bender.
Claims (10)
1. a kind of bending mechanism of bender, it is characterised in that：Including holding pad, holding pad revolving part and driving holding pad rotation
The curved mould rotating mechanism of the holding pad rotating mechanism, bending mould device and driving bending mould device rotation of part rotation, holding pad is connected to
On holding pad revolving part, the center of rotation of curved mould is connected on holding pad revolving part by bearing, and curved mould rotating mechanism is fixed to
On holding pad revolving part, holding pad is parallel with the curved template of bending mould device.
2. the bending mechanism of bender as claimed in claim 1, it is characterised in that：The holding pad rotating mechanism is watched for second
Motor is taken, curved mould rotating mechanism is the first servomotor.
3. the bending mechanism of bender as claimed in claim 1, it is characterised in that：The holding pad also sets up holding pad movement
Device, holding pad is moved under the driving of holding pad mobile device, close to or away from workpiece.
4. the bending mechanism of bender as claimed in claim 3, it is characterised in that：The holding pad mobile device includes the 3rd
Servomotor and the 3rd decelerator, the output end connection wire rod of decelerator, screw mandrel are set in the screw mandrel spiral shell on material-pressing rack
In female, driven and mobile material-pressing rack by the 3rd servomotor, so that holding pad is close to or away from workpiece, material-pressing rack and bottom
Connected by guiding mechanism between support member.
5. the bending mechanism of bender as claimed in claim 1, it is characterised in that：Also in the workpiece feedstock direction of bending mould device
Upper setting movable head, during workpiece bending, workpiece is by movable head and bending mechanism clamping, movable head and bending mechanism synchronization action.
6. the bending mechanism of bender as claimed in claim 5, it is characterised in that：The movable head set movable head laterally with
Motivation structure, during workpiece bending by movable head transverse direction follower actively make movable head and bending mechanism to power preferably synchronously move
Make.
7. the bending mechanism of bender as claimed in claim 6, it is characterised in that：The movable head transverse direction follower includes
Movable head cylinder, movable head cylinder piston rod is connected with movable head, movable head be arranged on arbitrary-movement articulator and movable head with it is servo-actuated
Guiding mechanism is set between frame, and by the flexible of piston rod, movable head is laterally moved under the guiding of guiding mechanism on arbitrary-movement articulator
It is dynamic, by increasing capacitance it is possible to increase certain power, preferably keep synchronous when making workpiece bending.
8. the bending mechanism of bender as claimed in claim 5, it is characterised in that：The movable head is also set up before and after movable head
Travel mechanism, the movable mechanism of movable head can in the longitudinal direction be moved to correct position, facilitate turnover and the tune of workpiece
It is whole.
9. the bending mechanism of bender as claimed in claim 5, it is characterised in that：The movable mechanism of the movable head includes
One the 4th servomotor with decelerator, the output end connection movable head screw mandrel of decelerator, movable head screw mandrel is set in installation
In movable head feed screw nut on arbitrary-movement articulator, movable head is arranged on arbitrary-movement articulator, and arbitrary-movement articulator is arranged on fuselage and the two
Between set arbitrary-movement articulator guiding mechanism, by the 4th servomotor drive, arbitrary-movement articulator is driven under the guiding of guiding mechanism be servo-actuated
Plate is close to or away from workpiece.
10. the bending mechanism of bender as claimed in claim 5, it is characterised in that：The movable head side also sets up movement
The feed device of workpiece, feed device includes rotary shafts and the movable stand being arranged on cradle, and movable stand passes through movable stand
Drive device is driven, and guiding mechanism is set between movable stand and rotary shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185182.8A CN106862420A (en) | 2017-03-25 | 2017-03-25 | A kind of bending mechanism of bender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185182.8A CN106862420A (en) | 2017-03-25 | 2017-03-25 | A kind of bending mechanism of bender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106862420A true CN106862420A (en) | 2017-06-20 |
Family
ID=59173830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710185182.8A Pending CN106862420A (en) | 2017-03-25 | 2017-03-25 | A kind of bending mechanism of bender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106862420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687177A (en) * | 2018-03-19 | 2018-10-23 | 浙江盛业科技有限公司 | Automatic combination bender |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372023A (en) * | 2008-04-28 | 2009-02-25 | 北京韩江自动化玻璃机械设备有限公司 | Bender and method for folding stainless steel using the same |
| CN103121053A (en) * | 2013-03-07 | 2013-05-29 | 宁波精达成形装备股份有限公司 | Horizontal bending machine |
| CN103121058A (en) * | 2013-02-08 | 2013-05-29 | 宁波精达成形装备股份有限公司 | Vertical bending machine |
| CN103128146A (en) * | 2013-02-08 | 2013-06-05 | 宁波精达成形装备股份有限公司 | Bending mechanism of bending machine |
| CN203140520U (en) * | 2013-02-08 | 2013-08-21 | 宁波精达成形装备股份有限公司 | Bending mechanism of bending machine |
| KR101432445B1 (en) * | 2013-06-12 | 2014-08-21 | 유재병 | Bending apparatus |
| CN105312377A (en) * | 2015-11-16 | 2016-02-10 | 滁州艾普机电科技有限公司 | Four-bend forming device for liner |
-
2017
- 2017-03-25 CN CN201710185182.8A patent/CN106862420A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372023A (en) * | 2008-04-28 | 2009-02-25 | 北京韩江自动化玻璃机械设备有限公司 | Bender and method for folding stainless steel using the same |
| CN103121058A (en) * | 2013-02-08 | 2013-05-29 | 宁波精达成形装备股份有限公司 | Vertical bending machine |
| CN103128146A (en) * | 2013-02-08 | 2013-06-05 | 宁波精达成形装备股份有限公司 | Bending mechanism of bending machine |
| CN203140520U (en) * | 2013-02-08 | 2013-08-21 | 宁波精达成形装备股份有限公司 | Bending mechanism of bending machine |
| CN103121053A (en) * | 2013-03-07 | 2013-05-29 | 宁波精达成形装备股份有限公司 | Horizontal bending machine |
| KR101432445B1 (en) * | 2013-06-12 | 2014-08-21 | 유재병 | Bending apparatus |
| CN105312377A (en) * | 2015-11-16 | 2016-02-10 | 滁州艾普机电科技有限公司 | Four-bend forming device for liner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687177A (en) * | 2018-03-19 | 2018-10-23 | 浙江盛业科技有限公司 | Automatic combination bender |
| CN108687177B (en) * | 2018-03-19 | 2024-03-19 | 浙江盛业科技有限公司 | Automatic combined bending machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102441594B (en) | Bending machine | |
| CN103128146B (en) | A kind of bending mechanism of bender | |
| CN108994165B (en) | Front-rear multi-station pipe end integrated combined pipe bender | |
| CN103121053A (en) | Horizontal bending machine | |
| CN111590455A (en) | Polishing device in steel pipe | |
| CN103121058B (en) | A kind of vertical bending machine | |
| CN208005159U (en) | A kind of tubing joint close automatic assembly line | |
| CN103521642A (en) | Numerical control wire bending machine | |
| CN203197052U (en) | Horizontal bending machine | |
| CN202447458U (en) | Novel bending machine | |
| CN106862420A (en) | A kind of bending mechanism of bender | |
| CN110497430B (en) | Multi-station precision manipulator | |
| CN203140520U (en) | Bending mechanism of bending machine | |
| CN115283898B (en) | Mechanical equipment's maintenance welding set | |
| KR101747996B1 (en) | 2-Head 2-Radius system bending machine | |
| CN203330685U (en) | Spindly shaft turning, finishing and drawing combined machine tool | |
| CN213915485U (en) | Automatic centering quick die change mechanism | |
| CN107159761A (en) | Horizontal bender | |
| CN109081061A (en) | Axle heating furnace conveying mechanism | |
| CN203292257U (en) | Vertical bending machine | |
| CN110947806A (en) | Full-automatic pipe bending equipment and method | |
| CN101745808B (en) | Numerical control wheel set barreling lathe | |
| CN221018123U (en) | Synchronous pulley driven pipe bending device | |
| CN203508870U (en) | Numerical control wire bending machine | |
| CN221209505U (en) | Pipe bending device driven by speed reducer |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |
|
| WD01 | Invention patent application deemed withdrawn after publication |