CN112679083A - Automatic glass apparatus for producing of cutting - Google Patents

Automatic glass apparatus for producing of cutting Download PDF

Info

Publication number
CN112679083A
CN112679083A CN202011603906.4A CN202011603906A CN112679083A CN 112679083 A CN112679083 A CN 112679083A CN 202011603906 A CN202011603906 A CN 202011603906A CN 112679083 A CN112679083 A CN 112679083A
Authority
CN
China
Prior art keywords
fixedly connected
threaded rod
motor
bottom plate
rods
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Withdrawn
Application number
CN202011603906.4A
Other languages
Chinese (zh)
Inventor
璁告尝
许波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Sucheng Glass Co ltd
Original Assignee
Hefei Sucheng Glass Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hefei Sucheng Glass Co ltd filed Critical Hefei Sucheng Glass Co ltd
Priority to CN202011603906.4A priority Critical patent/CN112679083A/en
Publication of CN112679083A publication Critical patent/CN112679083A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Abstract

The invention discloses an automatic-cutting glass production device, which relates to the technical field of glass processing and comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a support frame, the right side of the support frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first threaded rod, the outer side of the first threaded rod is in threaded connection with a first moving block, the bottom of the first moving block is fixedly connected with uniformly-distributed support rods, and the bottoms of the support rods are fixedly connected with a bearing plate. According to the invention, through the matching of the electric push rod, the first piston plate, the sucker, the rotating disc and the like, the extension of the telescopic end of the electric push rod is controlled, the diameter of the cut round glass can be controlled, the machined round glass is adsorbed by the sucker, the formed round glass can be separated from the glass waste, the manual separation of workers is not needed, the labor intensity is reduced, and the production efficiency is improved.

Description

Automatic glass apparatus for producing of cutting
Technical Field
The invention relates to the technical field of glass processing, in particular to an automatic cutting glass production device.
Background
The glass is formed by melting silica and other chemical substances together, a continuous network structure is formed during melting, the viscosity is gradually increased and hardened during cooling so as to lead the silicate non-metallic material to be crystallized, after the glass is produced, different types of glass, such as hollow glass, Low-e glass and the like, need to be manufactured according to actual requirements, and the glass needs to be cut into different sizes during the manufacturing process.
At present, the automatic glass cutting production line has a plurality of types, when cutting out circular glass, the current cutting is mainly manual cutting, the cutting efficiency is low when the batch operation is carried out, although mechanical equipment for circular cutting is arranged, only one circular glass is cut at each time, the efficiency is low although the labor intensity of workers is reduced, and the circular glass formed by cutting is manually stripped by the workers, so that the automatic cutting glass production device is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an automatic cutting glass production device.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic cutting glass production device comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a support frame, the right side of the support frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first threaded rod, the outer side of the first threaded rod is in threaded connection with a first moving block, the bottom of the first moving block is fixedly connected with uniformly distributed support rods, the bottoms of a plurality of the support rods are fixedly connected with a bearing plate, the bottom of the bearing plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a first gear, the inner side of the bearing plate is rotatably connected with uniformly distributed rotating rods, the tops of a plurality of the rotating rods are fixedly connected with a second gear, the bottoms of a plurality of the rotating rods are rotatably connected with rotating joints, and the bottoms of a plurality of the rotating joints are fixedly connected with gas columns, the bottom of each of the air columns is fixedly connected with a sucker, the left bottom of each of the rotating rods is fixedly connected with an electric push rod, the telescopic ends of the electric push rods are fixedly connected with a cutting tool, the right side of the bottom plate is fixedly connected with a third motor, the output end of the third motor is fixedly connected with a second threaded rod, the outer side of the second threaded rod is in threaded connection with second moving blocks which are symmetrically distributed, the tops of the two second moving blocks are hinged with connecting rods, the tops of the two connecting rods are hinged with rotating shafts, the left end of the second threaded rod is fixedly connected with a first bevel gear, the outer side of the first bevel gear is meshed with a second bevel gear, the top of the second bevel gear is fixedly connected with a rotating shaft, the top of the rotating shaft is fixedly connected with a rotating disk, the top of the rotating disk is fixedly connected with a guide column, the right side fixedly connected with pull rod of fixed frame, the right-hand member fixedly connected with second piston plate of pull rod, the right side fixedly connected with evenly distributed's of second piston plate spring, it is a plurality of the right-hand member fixedly connected with first piston plate of spring, the top fixedly connected with gas shell of support frame.
Preferably, the left side fixedly connected with fixed cover of bottom plate, the inboard of fixed cover is rotated with the outside of pivot and is connected, first threaded rod rotates with the support frame to be connected.
Preferably, the bottom of the bottom plate is fixedly connected with supporting legs which are uniformly distributed, the second threaded rod is rotatably connected with the bottom plate, and the left end of the second threaded rod penetrates through the bottom plate and is fixedly connected with the first bevel gear.
Preferably, the top of the first moving block is fixedly connected with a first sliding block, and the inner top wall of the support frame is provided with a first sliding groove matched with the first sliding block.
Preferably, the bottom of the second moving block is fixedly connected with a second sliding block, a second sliding groove matched with the second sliding block is formed in the inner bottom wall of the bottom plate, and the thread of the second threaded rod is divided into two parts, and the thread directions of the two parts are opposite.
Preferably, the outer side of the first piston plate is connected with the inner side of the air shell in a sliding mode, the plurality of second gears are in transmission connection with the first gears through chains, and the pull rod is connected with the air shell in a sliding mode.
Preferably, the inboard of gas post is provided with the cavity, the bottom of cavity and the top intercommunication of sucking disc, the right side fixedly connected with pipeline of air casing, it is a plurality of the equal fixedly connected with in left side of gas post and the hose of cavity intercommunication, it is a plurality of the hose is linked together with the pipeline.
Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
1. according to the glass cutting machine, the second motor is started through the cooperation of the sucker, the cutting tool, the electric push rod, the second motor and the like, the output end of the second motor drives the first gear to rotate, the first gear drives the second gears to rotate through the chain, the rotating rod is further driven to rotate, the rotating rod drives the electric push rod to rotate, further the cutting tool is driven to rotate, circular cutting movement is carried out by taking the sucker as the center, a plurality of circular glasses are cut at one time, the efficiency is improved, the sucker adsorbs the glass to be processed, and the stability of the glass during processing can be guaranteed through the cooperation of the sucker, the cutting tool, the electric push rod and the.
2. According to the invention, through the matching of the electric push rod, the first piston plate, the sucker, the rotating disc and the like, the extension of the telescopic end of the electric push rod is controlled, the diameter of the cut round glass can be controlled, the machined round glass is adsorbed by the sucker, the formed round glass can be separated from the glass waste, the manual separation of workers is not needed, the labor intensity is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of an automatic cutting glass manufacturing apparatus according to the present invention.
FIG. 2 is a schematic top view of a support plate of an automatic cutting glass manufacturing apparatus according to the present invention.
FIG. 3 is a schematic top view of a rotary disk of an automatic cutting glass manufacturing apparatus according to the present invention.
FIG. 4 is an enlarged view of the structure at A in FIG. 1 of an automatic cutting glass manufacturing apparatus according to the present invention.
Reference numerals: 1. a base plate; 2. a support frame; 3. a first motor; 4. a first threaded rod; 5. a first moving block; 6. a support bar; 7. a support plate; 8. a second motor; 9. a first gear; 10. a second gear; 11. a rotating rod; 12. a rotary joint; 13. a gas column; 14. a suction cup; 15. an electric push rod; 16. cutting a cutter; 17. a third motor; 18. a second threaded rod; 19. a second moving block; 20. a connecting rod; 21. a processing table; 22. a first bevel gear; 23. a second bevel gear; 24. a rotating shaft; 25. rotating the disc; 26. a guide post; 27. a fixing frame; 28. a pull rod; 29. a first piston plate; 30. 31, spring; 32. a second piston plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-4, the automatic cutting glass production device provided by the invention comprises a bottom plate 1, a supporting frame 2 is fixedly connected to the top of the bottom plate 1, a first motor 3 is fixedly connected to the right side of the supporting frame 2, a first threaded rod 4 is fixedly connected to the output end of the first motor 3, a first moving block 5 is in threaded connection with the outer side of the first threaded rod 4, uniformly distributed supporting rods 6 are fixedly connected to the bottom of the first moving block 5, a supporting plate 7 is fixedly connected to the bottoms of the supporting rods 6, a second motor 8 is fixedly connected to the bottom of the supporting plate 7, a first gear 9 is fixedly connected to the output end of the second motor 8, uniformly distributed rotating rods 11 are rotatably connected to the inner side of the supporting plate 7, a second gear 10 is fixedly connected to the tops of the rotating rods 11, rotating joints 12 are rotatably connected to the bottoms of the rotating rods 11, and gas columns 13 are fixedly connected to the bottoms of the rotating joints 12, the bottoms of the air columns 13 are fixedly connected with suction cups 14, the bottoms of the left sides of the rotating rods 11 are fixedly connected with electric push rods 15, the telescopic ends of the electric push rods 15 are fixedly connected with cutting tools 16, and the right side of the bottom plate 1 is fixedly connected with a third motor 17;
a second threaded rod 18 is fixedly connected to the output end of the third motor 17, second movable blocks 19 which are symmetrically distributed are connected to the outer side of the second threaded rod 18 through threads, connecting rods 20 are hinged to the tops of the two second movable blocks 19, rotating shafts 24 are hinged to the tops of the two connecting rods 20, a first bevel gear 22 is fixedly connected to the left end of the second threaded rod 18, a second bevel gear 23 is meshed to the outer side of the first bevel gear 22, the top of the second bevel gear 23 is fixedly connected with the rotating shaft 24, a rotating disk 25 is fixedly connected to the top of the rotating shaft 24, a guide pillar 26 is fixedly connected to the top of the rotating disk 25, a fixed frame 27 is slidably connected to the outer side of the guide pillar 26, a pull rod 28 is fixedly connected to the right side of the fixed frame 27, a second piston plate 32 is fixedly connected to the right end of the pull rod 28, springs 31 which are, the top of the supporting frame 2 is fixedly connected with an air shell 30;
the left side of the bottom plate 1 is fixedly connected with a fixed sleeve, the inner side of the fixed sleeve is rotatably connected with the outer side of the rotating shaft 24, the first threaded rod 4 is rotatably connected with the support frame 2, the bottom of the bottom plate 1 is fixedly connected with supporting legs which are uniformly distributed, the second threaded rod 18 is rotatably connected with the bottom plate 1, the left end of the second threaded rod 18 penetrates through the bottom plate 1 and is fixedly connected with the first bevel gear 22, the top of the first moving block 5 is fixedly connected with a first sliding block, and the inner top wall of the support frame 2 is provided with a first sliding chute matched with the first sliding;
the bottom fixedly connected with second slider of second movable block 19, the second spout that matches with the second slider is seted up to the inner bottom wall of bottom plate 1, the screw thread of second threaded rod 18 divide into two parts and the screw thread opposite direction of two parts, the outside of first piston plate 29 and the inboard sliding connection of air casing 30, a plurality of second gears 10 pass through the chain and are connected with first gear 9 transmission, pull rod 28 and air casing 30 sliding connection, the inboard of air column 13 is provided with the cavity, the bottom of cavity and the top intercommunication of sucking disc 14, the right side fixedly connected with pipeline of air casing 30, the equal fixedly connected with in left side of a plurality of air columns 13 and the hose of cavity intercommunication, a plurality of hoses are linked together with the pipeline.
In the invention, glass to be processed is placed on the top of a processing table 21, a first motor 3 is started to drive a first threaded rod 4 to rotate, the first threaded rod 4 drives a first moving block 5 to move, the cutting position can be controlled, the diameter of the cut round glass can be controlled by controlling the extension of the telescopic end of an electric push rod 15, a third motor 17 is started at the moment, the output end of the third motor 17 drives a second threaded rod 18 to rotate, the second threaded rod 18 drives a second moving block 19 to move, the two second moving blocks 19 approach each other to drive a connecting rod 20 to move, and further the processing table 21 is driven to ascend, in the ascending process of the processing table 21, the second threaded rod 18 drives a first bevel gear 22 to rotate, the first bevel gear 22 drives a second bevel gear 23 to rotate, the second bevel gear 23 drives a rotating shaft 24 to rotate, and the rotating shaft 24 drives a rotating disk 25 to rotate, the rotating disc 25 drives the guide post 26 to rotate, so that the fixed frame 27 and the pull rod 28 move, the pull rod 28 moves to drive the second piston plate 32 to move, the second piston plate 32 pulls the first piston plate 29 to move through the spring 31, when the processing table 21 drives the glass to ascend, the top of the glass contacts with the bottom of the suction cup 14 before, then in the process of continuing ascending, the first piston plate 29 moves leftwards, negative air pressure is formed through a pipeline and a hose to enable the suction cup 14 to adsorb the glass, when the glass contacts with the cutting tool 16, the third motor 17 is stopped, the second motor 8 is started, the output end of the second motor 8 drives the first gear 9 to rotate, the first gear 9 drives the plurality of second gears 10 to rotate through a chain, so that the rotating bar 11 rotates, the rotating bar 11 drives the electric push rod 15 to rotate so as to drive the cutting tool 16 to rotate, and circular cutting motion is performed by taking the suction cup 14 as the center, at this moment, the sucker 14 adsorbs the glass to be processed, and the stability of the glass processing can be guaranteed by matching with the processing table 21, after the cutting is completed, the third motor 17 is controlled to drive the second threaded rod 18 to rotate, so that the second moving block 19 and the connecting rod 20 move, the processing table 21 descends, under the buffer action of the spring 31, the sucker 14 adsorbs the circular glass after the cutting is completed, the formed circular glass can be separated from the glass waste, the manual separation of workers is not needed, when the processing table 21 continues to descend, the sucker 14 does not have negative air pressure, at the moment, the circular glass is separated, and the workers collect the glass.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (7)

1. The automatic cutting glass production device comprises a bottom plate (1) and is characterized in that a supporting frame (2) is fixedly connected to the top of the bottom plate (1), a first motor (3) is fixedly connected to the right side of the supporting frame (2), a first threaded rod (4) is fixedly connected to the output end of the first motor (3), a first moving block (5) is in threaded connection with the outer side of the first threaded rod (4), uniformly distributed supporting rods (6) are fixedly connected to the bottom of the first moving block (5), a supporting plate (7) is fixedly connected to the bottoms of the supporting rods (6), a second motor (8) is fixedly connected to the bottom of the supporting plate (7), a first gear (9) is fixedly connected to the output end of the second motor (8), and uniformly distributed rotating rods (11) are rotatably connected to the inner side of the supporting plate (7), the top parts of the rotating rods (11) are fixedly connected with second gears (10), the bottom parts of the rotating rods (11) are rotatably connected with rotary joints (12), the bottom parts of the rotary joints (12) are fixedly connected with air columns (13), the bottom parts of the air columns (13) are fixedly connected with suckers (14), the left bottom parts of the rotating rods (11) are fixedly connected with electric push rods (15), the telescopic ends of the electric push rods (15) are fixedly connected with cutting tools (16), the right side of the bottom plate (1) is fixedly connected with a third motor (17), the output end of the third motor (17) is fixedly connected with a second threaded rod (18), the outer side of the second threaded rod (18) is in threaded connection with second moving blocks (19) which are symmetrically distributed, and the top parts of the two second moving blocks (19) are hinged with connecting rods (20), the top of the two connecting rods (20) is hinged with a rotating shaft (24), the left end of the second threaded rod (18) is fixedly connected with a first bevel gear (22), the outer side of the first bevel gear (22) is meshed with a second bevel gear (23), the top of the second bevel gear (23) is fixedly connected with the rotating shaft (24), the top of the rotating shaft (24) is fixedly connected with a rotating disk (25), the top of the rotating disk (25) is fixedly connected with a guide pillar (26), the outer side of the guide pillar (26) is slidably connected with a fixed frame (27), the right side of the fixed frame (27) is fixedly connected with a pull rod (28), the right end of the pull rod (28) is fixedly connected with a second piston plate (32), the right side of the second piston plate (32) is fixedly connected with uniformly distributed springs (31), and the right ends of the springs (31) are fixedly connected with a first, the top of the support frame (2) is fixedly connected with an air shell (30).
2. The automatic cutting glass production device according to claim 1, wherein a fixing sleeve is fixedly connected to the left side of the bottom plate (1), the inner side of the fixing sleeve is rotatably connected to the outer side of the rotating shaft (24), and the first threaded rod (4) is rotatably connected to the supporting frame (2).
3. The automatic cutting glass production device according to claim 1, wherein the bottom of the bottom plate (1) is fixedly connected with evenly distributed supporting legs, the second threaded rod (18) is rotatably connected with the bottom plate (1), and the left end of the second threaded rod (18) penetrates through the bottom plate (1) and is fixedly connected with the first bevel gear (22).
4. The automatic cutting glass production device according to claim 1, wherein a first sliding block is fixedly connected to the top of the first moving block (5), and a first sliding groove matched with the first sliding block is formed in the inner top wall of the support frame (2).
5. The automatic cutting glass production device according to claim 1, wherein a second sliding block is fixedly connected to the bottom of the second moving block (19), a second sliding groove matched with the second sliding block is formed in the inner bottom wall of the bottom plate (1), and the thread of the second threaded rod (18) is divided into two parts, and the thread directions of the two parts are opposite.
6. An automatic cutting glass production device according to claim 1, characterized in that the outer side of the first piston plate (29) is slidably connected with the inner side of the gas housing (30), the plurality of second gears (10) are in transmission connection with the first gear (9) through a chain, and the pull rod (28) is slidably connected with the gas housing (30).
7. The automatic cutting glass production device according to claim 1, wherein a cavity is formed in the inner side of the air column (13), the bottom of the cavity is communicated with the top of the suction cup (14), a pipeline is fixedly connected to the right side of the air shell (30), hoses communicated with the cavity are fixedly connected to the left sides of the air columns (13), and the hoses are communicated with the pipeline.
CN202011603906.4A 2020-12-30 2020-12-30 Automatic glass apparatus for producing of cutting Withdrawn CN112679083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011603906.4A CN112679083A (en) 2020-12-30 2020-12-30 Automatic glass apparatus for producing of cutting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011603906.4A CN112679083A (en) 2020-12-30 2020-12-30 Automatic glass apparatus for producing of cutting

Publications (1)

Publication Number Publication Date
CN112679083A true CN112679083A (en) 2021-04-20

Family

ID=75454670

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011603906.4A Withdrawn CN112679083A (en) 2020-12-30 2020-12-30 Automatic glass apparatus for producing of cutting

Country Status (1)

Country Link
CN (1) CN112679083A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113292238A (en) * 2021-06-04 2021-08-24 江苏立晶工业科技有限公司 High borosilicate glass product circular cutting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113292238A (en) * 2021-06-04 2021-08-24 江苏立晶工业科技有限公司 High borosilicate glass product circular cutting device

Similar Documents

Publication Publication Date Title
CN112679083A (en) Automatic glass apparatus for producing of cutting
CN211218247U (en) Shaft cover plate punching equipment
CN111646683A (en) Indentation formula glass-cutting device
CN109399904B (en) Work platform convenient to use and capable of guaranteeing glass cutting safety
CN112059244B (en) Stainless steel ball production drilling equipment
CN112170892B (en) Drilling equipment for spherical articles
CN210306077U (en) Cutting device for machining
CN112139554A (en) Drilling device for production and processing of hydraulic oil cylinder earrings
CN210387306U (en) Automatic copper pipe feeding device
CN108519389B (en) Stamping part surface defect detection device and method based on machine vision
CN112935404A (en) Cutting device is used in production of thread rolling piston rod
CN113232007A (en) Novel equipment for picking and placing hardware and using method thereof
CN103949715A (en) Cutting device for round metal plate
CN211415984U (en) Pressing equipment for processing plastic shell
CN216361673U (en) High-frequency vibration test workpiece fixing tool
CN216505682U (en) Baolilong mould processing is with frame waste material automatic electric heat cutting device
CN209580125U (en) A kind of positioning of silicon single crystal rod and Qu Pian mechanism
CN211966148U (en) Convenient cutting device for manufacturing of adjusting
CN107309944A (en) A kind of waste material automatic separating apparatus
CN208729930U (en) A kind of product cutting device for plastic
CN214870941U (en) Cutting device is used in production of MV-SPT cavity composite pipe
CN113183106A (en) Rotating device
CN212239324U (en) Full-automatic cutting machining device for handle gear
CN210936831U (en) Material feeding unit is used in processing of aluminium disk
CN215658134U (en) Fixing device is used in steel pipe pole production and processing

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: 20210420

WW01 Invention patent application withdrawn after publication