CN210192019U - Automatic packaging film corner cutting machine for packaging box - Google Patents

Automatic packaging film corner cutting machine for packaging box Download PDF

Info

Publication number
CN210192019U
CN210192019U CN201920798159.0U CN201920798159U CN210192019U CN 210192019 U CN210192019 U CN 210192019U CN 201920798159 U CN201920798159 U CN 201920798159U CN 210192019 U CN210192019 U CN 210192019U
Authority
CN
China
Prior art keywords
smoothing
packaging
corner cutting
units
cutting machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201920798159.0U
Other languages
Chinese (zh)
Inventor
Jinshuang Zhai
翟金双
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.)
Suzhou Wisetech Automation Technology Co Ltd
Original Assignee
Suzhou Wisetech Automation Technology 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 Suzhou Wisetech Automation Technology Co Ltd filed Critical Suzhou Wisetech Automation Technology Co Ltd
Priority to CN201920798159.0U priority Critical patent/CN210192019U/en
Application granted granted Critical
Publication of CN210192019U publication Critical patent/CN210192019U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses an automatic corner cutting machine for packaging films of packaging boxes, which comprises a smoothing device and two corner cutting devices which are arranged in sequence, wherein a conveying mechanism for conveying materials is arranged above the smoothing device and the corner cutting devices, the smoothing device comprises four groups of smoothing units respectively corresponding to four sides of the packaging boxes, each group of smoothing units comprises two moving parts which are arranged in a sliding way, the sliding directions of the two moving parts are opposite, and the sliding directions of the moving parts of the adjacent smoothing units are vertical; the corner cut device comprises two groups of corner cut units which are symmetrically arranged, each group of corner cut units comprises a straightening device for straightening the packaging film and a corner cut knife clamping component for cutting corners, each corner cut knife clamping component comprises a first knife clamp and a second knife clamp which are respectively arranged on two sides of the straightening device, and a heating element is arranged on one side, close to the straightening device, of each first knife clamp. The utility model discloses can cut the closed angle excision of packaging film on the packing carton high-efficiently, the process is simple moreover, and degree of automation is high, and the packaging film cladding after the corner cut is effectual.

Description

Automatic packaging film corner cutting machine for packaging box
Technical Field
The utility model relates to the field of packaging, especially, relate to an automatic cornering machine of packaging film for packing carton.
Background
Many products, after being placed in a package, need to be covered with a packaging film to prevent the surface of the package from being worn or scratched. As shown in fig. 1, the package box is generally a rectangular parallelepiped, the package film covers the package box, and the package film protrudes at the positions of four edges of the package box to form sharp corners, which need to be processed. The common processing mode is to fold the corners, and the mode has complex processes, needs to be realized by arranging a plurality of devices in a matching way, and has higher cost, lower automation degree and lower working efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an automatic cornering machine of packaging film for packing carton, it can realize the banding behind the packaging film corner cut on the packing carton, solves the lower problem of current packaging film corner treatment facility degree of automation.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the packaging film automatic corner cutting machine for the packaging box comprises a smoothing device and two corner cutting devices which are sequentially arranged, wherein a conveying mechanism for conveying materials is arranged above the smoothing device and the corner cutting devices, the smoothing device comprises four groups of smoothing units which respectively correspond to four sides of the packaging box, each group of smoothing units comprises two movable members which are arranged in a sliding mode, the sliding directions of the two movable members are opposite, and the sliding directions of the movable members of the adjacent smoothing units are vertical;
the corner cut device includes the corner cut unit that two sets of symmetries set up, every group the corner cut unit presss from both sides the sword subassembly including the corner cut that is used for straightening the device of packaging film and is used for the corner cut, the device that straightens removes the setting, the corner cut presss from both sides the sword subassembly including setting up respectively at the first double-layered sword and the second of straightening the device both sides and pressing from both sides the sword, first double-layered sword and second press from both sides the sword and remove the setting and moving direction perpendicular to the moving direction of the device that straightens, first double-layered sword is being close to the heating member is installed to one side of straightening the device.
Preferably, the smoothing device, the conveying mechanism and the two corner cutting devices form a group of working units, the working units are arranged in two groups in parallel, a feeding conveying device is arranged between the smoothing devices of the two groups of working units, a feeding conveying device is arranged above the feeding conveying device, and a discharging conveying device is arranged at one end, far away from the feeding conveying device, of each working unit.
Preferably, a limiting part is installed at one end, close to the smoothing device, of the feeding conveying device, and a pulley is arranged on the limiting part.
Preferably, the discharging conveying device comprises a first conveying rail and a second conveying rail which are perpendicular to each other, the conveying direction of the first conveying rail faces the second conveying rail, and the discharging end of the first conveying rail is close to the second conveying rail.
Preferably, the smoothing device further comprises a first base used for bearing the packaging box, the corner cutting device further comprises a second base used for bearing the packaging box, and the first base and the second base are floating supporting seats supported by springs.
Preferably, the smoothing unit further comprises smoothing cylinders, the two moving parts are connected with the smoothing cylinders, the two sets of smoothing cylinders of the smoothing unit are connected with positioning cylinders, the two sets of smoothing cylinders connected with the positioning cylinders are adjacent to each other, and the positioning cylinders drive the smoothing cylinders to move and the moving direction of the smoothing cylinders is perpendicular to the moving direction of the moving parts.
Preferably, the movable members are rod bodies, the outer sides of the two movable members of the smoothing unit are respectively provided with an inclined surface with an inclination of 45 degrees, and the inclined surfaces are matched with the sharp corners of the packaging films.
Preferably, the straightening device is a second clamping jaw air cylinder, and a waste collecting device is placed below the straightening device.
Preferably, the transportation mechanism comprises a transportation rail and a plurality of first clamping jaw air cylinders arranged in a lifting mode, and the first clamping jaw air cylinders are slidably mounted on the transportation rail.
The utility model has the advantages that: the utility model provides an automatic cornering machine of packaging film for packing carton can cut the closed angle of packaging film on the packing carton high-efficiently, and the process is simple moreover, and degree of automation is high, and the cladding of the packaging film after the corner cut is effectual, and the space between the packing carton is little.
Drawings
Fig. 1 is a schematic structural view of a packaging box covered with a packaging film according to the present invention;
FIG. 2 is a schematic structural view and a partial enlarged view of the automatic corner cutting machine for packaging film of the present invention;
FIG. 3 is a schematic structural view of the smoothing device of the present invention;
fig. 4 is a schematic structural view of the corner cutting device of the present invention;
wherein: 1. the device comprises a feeding conveying device, 2a limiting piece, 3a pulley, 4a smoothing unit, 4a movable piece, 4b a smoothing cylinder, 5 a first base, 6 a positioning cylinder, 7 an inclined surface, 8 a straightening device, 9a corner cutting and clamping component, 9a first clamping knife, 9b a second clamping knife, 10 a second base, 11 a waste collecting device, 12a discharging conveying device, 12a first conveying rail, 12b a second conveying rail, 13a conveying mechanism, 13a conveying rail, 13b a first clamping jaw cylinder, 14 a feeding conveying device, 15 a smoothing device and 16 a corner cutting device.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2, the present embodiment provides an automatic corner cutting machine for a packaging film of a package box, which includes two sets of work units arranged in parallel in order to improve work efficiency. Each group of working units comprises a smoothing device 15, two corner cutting devices 16 and a conveying mechanism 13 which is arranged above the smoothing device 15 and the corner cutting devices 16 and used for conveying materials.
A feeding and conveying device 1 is arranged between the smoothing devices 15 of the two groups of working units. The feed conveyor 1 serves to transport the packs and is a horizontally disposed conveyor belt with one end remote from the work units and one end between the smoothing devices 15. One end of the feeding and conveying device 1 close to the smoothing device 15 is provided with a limiting part 2 used for limiting the packaging boxes and preventing the packaging boxes from falling. The limiting part 2 is provided with a pulley 3, when the packing box is taken out from the feeding and conveying device 1, the pulley 3 rotates, the friction force between the packing box and the limiting part 2 can be reduced, and the packing film on the surface of the packing box is prevented from being worn by the limiting part 2. An ion fan may be placed at the side of the infeed conveyor 1 to blow off empty packages.
Above the infeed conveyor 1 there is an infeed conveyor 14 for placing packages onto a smoothing device 15. The feeding and conveying device 14 is a track with a height higher than that of the conveying mechanism 13, and clamping jaws are arranged on the track. In order to release the grippers on the infeed conveyor 14, the transport device 13 is movable as a whole, and when the grippers on the infeed conveyor 14 convey the packs onto the smoothing device 15, the transport device 13 is moved away from the infeed conveyor 14 in order to release the grippers.
The end of the working unit remote from the feeding conveyor 1 is provided with a discharging conveyor 12. The discharging conveyor 12 comprises a first conveying rail 12a and a second conveying rail 12b which are arranged perpendicular to each other, and the two groups of conveying rails correspond to the two working units respectively. The first transfer rail 12a is transferred toward the second transfer rail 12b, and the discharge end of the first transfer rail 12a is close to the second transfer rail 12b. The first conveying rail 12a conveys the package by a pusher disposed above it, and the second conveying rail 12b is a conveyor belt driven by a motor. Because this automatic cornering machine of packaging film for packing carton is two work units, the load of discharging is more, and the feed inlet of detection machine in low reaches is less. If the conventional single-track conveying device is used, in order to meet the discharging requirement of the automatic corner cutting machine for packaging films for packaging boxes, the design is wide, materials cannot enter the detection machine, and therefore, the double conveying tracks are designed, so that the second conveying track 12b connected with the downstream detection machine can be designed to be narrow to meet the feeding requirement of the downstream detection machine.
The smoothing device 15 is used for smoothing the packaging film on the surface of the packaging box and the sharp corners of the packaging film and preventing the surface and the side edges of the packaging film from being wrinkled after corner cutting. The smoothing device 15 comprises a first base 5 for bearing the packaging box and four groups of smoothing units 4 respectively corresponding to four sides of the packaging box, wherein the smoothing units 4 are arranged around the first base 5. Each group of smoothing unit 4 comprises a smoothing cylinder and two movable pieces 4a arranged in a sliding manner, and the sliding directions of the two movable pieces 4a are opposite. The two movable pieces 4a are connected with the smoothing cylinder 4b, and move under the driving of the smoothing cylinder 4b, and the moving direction is parallel to the surface of the packing box. The sliding direction of the movable pieces 4a of the adjacent smoothing units 4 is vertical.
Among the four groups of smoothing units 4, two groups of smoothing cylinders 4b of the smoothing units 4 are connected with positioning cylinders 6, and the two groups of smoothing cylinders 4b connected with the positioning cylinders 6 are adjacent. The positioning cylinder 6 drives the smoothing cylinder 4b to move, the moving direction of the smoothing cylinder is perpendicular to the moving direction of the moving part 4a, and when the packaging box is positioned, the two sets of smoothing units 4 push the packaging box to move under the driving of the positioning cylinder 6, so that the packaging box is positioned among the four sets of smoothing units 4, and the positioning is realized.
The movable pieces 4a are rod bodies, the outer sides of the two movable pieces 4a of the group of smoothing units 4 are respectively provided with an inclined surface 7 inclined by 45 degrees, and the inclined surfaces 7 are matched with the sharp corners of the packaging films.
The corner cutting device 16 comprises a second base 10 for carrying the package and two symmetrically arranged sets of corner cutting units. Two sets of corner cutting units are arranged around the second base 10. Each group of corner cutting units comprises a straightening device 8 for straightening the packaging film and a corner cutting clamping knife assembly 9 for cutting corners. The straightening device 8 is a second clamping jaw air cylinder and is movably arranged, the corner cutting and knife clamping component 9 comprises a first knife clamp 9a and a second knife clamp 9b which are respectively arranged at two sides of the straightening device 8, the first knife clamp 9a and the second knife clamp 9b are movably arranged and the moving direction of the first knife clamp 9a is perpendicular to the moving direction of the straightening device 8, and a heating element is arranged at one side, close to the straightening device 8, of the first knife clamp 9a. Below the straightening device 8 is placed a waste collection device 11 for collecting the cut sharp corners. When the corner is cut, the straightening device 8 straightens the sharp corner of the packaging film, the first clamping knife 9a and the second clamping knife 9b clamp the root of the sharp corner of the packaging film, and then the sharp corner of the packaging film is cut off by heating through a heating element. Wherein, the heating member is the resistance wire, cuts off the closed angle through linear heating's mode, and the closed angle after the excision can not produce the adhesion with first double-layered sword 9a and second double-layered sword 9b.
The two groups of corner cutting devices 16 respectively cut off sharp corners at two ends of different diagonals, so that the two groups of corner cutting devices 16 have an included angle of 90 degrees when placed at the position of the corner cutting unit.
The transportation mechanism 13 comprises a transportation rail 13a and a plurality of first clamping jaw air cylinders 13b arranged in a lifting mode, and the first clamping jaw air cylinders 13b are installed on the transportation rail 13a in a sliding mode. The transport rail 13a is suspended and can slide in its longitudinal direction.
The first base 5 and the second base 10 are both floating supporting seats supported by springs. First base 5 and the unsteady setting of second base 10 can guarantee to have certain buffering when first clamping jaw cylinder 13b places the packing carton dynamics too big, prevents that the packing carton from damaging.
This a packaging film automatic corner cutting machine for packing carton's working process does:
(1) the packaging box covered with the packaging film is placed on the feeding conveying device 1, reaches the position of the limiting part 2 under the transmission action of the feeding conveying device 1, and is then conveyed to the first base 5 of the smoothing device 15 under the action of the feeding conveying device 14. During the transport of the packs by the infeed conveyor 14, the transport rails 13b of the transport mechanism 13 slide to clear the jaws of the infeed conveyor 14.
(2) After the packaging box is placed on the first base 5, the positioning air cylinder 6 drives the two groups of smoothing units 4 to push the packaging box to move under the driving of the positioning air cylinder 6, so that the packaging box is arranged among the four groups of smoothing units 4, and the positioning is realized. At the moment, the movable piece 4a of each group of smoothing unit 4 is in the middle position of the corresponding side surface of the packing box, and then the two movable pieces 4a of the same group move back to back along the surface of the packing box to smooth the surface of the packing box. When the movable pieces 4a move to the positions close to the sharp corners of the packaging film, the sharp corners of the packaging film are between the two movable pieces 4a, the inclined surfaces 7 of the two movable pieces 4a are matched with the sharp corners of the packaging film, and the two movable pieces 4a smooth the sharp corners of the packaging film.
(3) The package with the flattened package film is transported by a transport mechanism to the second base 10 of the first corner cutting device 16. The two groups of corner cutting units respectively correspond to packaging film sharp corners at two ends of a diagonal line of the packaging box. The straightening device 8 straightens the pointed angle of the packaging film, the first clamping knife 9a and the second clamping knife 9b clamp the root of the pointed angle of the packaging film, and then the pointed angle of the packaging film is cut off by heating through a heating element.
(4) The transport mechanism 13 transports the package with the two cut corners to the second base 10 on the second corner cutting device 16. The two groups of corner cutting units respectively correspond to packaging film sharp corners at two ends of the other diagonal line of the packaging box. The straightening device 8 straightens the pointed angle of the packaging film, the first clamping knife 9a and the second clamping knife 9b clamp the root of the pointed angle of the packaging film, and then the pointed angle of the packaging film is cut off by heating through a heating element.
(5) The packs with the four sharp corners of the packaging film cut off are transported to the outfeed conveyor 12.
When the whole automatic angle cutting machine for packaging films for packaging boxes works, two working units operate simultaneously, and the first conveying rail 12a and the second conveying rail 12b of the discharging conveying device 12 correspond to one working unit respectively.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims (9)

1. The automatic corner cutting machine for the packaging film of the packaging box is characterized by comprising a smoothing device (15) and two corner cutting devices (16) which are sequentially arranged, a conveying mechanism (13) for conveying materials is arranged above the smoothing device (15) and the corner cutting devices (16), the smoothing device (15) comprises four groups of smoothing units (4) which respectively correspond to four sides of the packaging box, each group of smoothing units (4) comprises two movable pieces (4a) which are arranged in a sliding mode, the sliding directions of the two movable pieces (4a) are opposite, and the sliding directions of the movable pieces (4a) of the adjacent smoothing units (4) are vertical;
corner cut device (16) are including the corner cut unit that two sets of symmetries set up, every group the corner cut unit is including being used for flare-out device (8) of flare-out packaging film and corner cut clamp knife subassembly (9) that are used for the corner cut, flare-out device (8) remove the setting, corner cut clamp knife subassembly (9) are including setting up respectively at first double-layered sword (9a) and the second clamp sword (9b) of flare-out device (8) both sides, first double-layered sword (9a) and second clamp sword (9b) remove and set up and moving direction perpendicular to the moving direction of flare-out device (8), first double-layered sword (9a) are being close to the heating member is installed to one side of flare-out device (8).
2. The automatic corner cutting machine for the packaging films of the packaging boxes according to claim 1 is characterized in that the smoothing device (15), the conveying mechanism (13) and the two corner cutting devices (16) form a group of working units, the working units are arranged in two groups in parallel, a feeding conveying device (1) is arranged between the smoothing devices (15) of the two groups of working units, a feeding conveying device (14) is arranged above the feeding conveying device (1), and a discharging conveying device (12) is arranged at one end, far away from the feeding conveying device (1), of the working units.
3. The automatic angle cutting machine for packaging films of packages according to claim 2, characterized in that a limiting piece (2) is installed at one end of the feeding and conveying device (1) close to the smoothing device (15), and a pulley (3) is arranged on the limiting piece (2).
4. The automatic corner cutting machine for packaging films for packages according to claim 2, characterized in that said outfeed conveyor (12) comprises a first conveyor track (12a) and a second conveyor track (12b) arranged perpendicularly to each other, the first conveyor track (12a) having a conveying direction directed towards the second conveyor track (12b), the outfeed end of the first conveyor track (12a) being close to the second conveyor track (12 b).
5. The automatic corner cutting machine for packaging films of packages according to claim 1, characterized in that the smoothing device (15) further comprises a first base (5) for bearing the package, the corner cutting device (16) further comprises a second base (10) for bearing the package, and the first base (5) and the second base (10) are both floating supports supported by springs.
6. The automatic corner cutting machine for packaging films of packaging boxes according to claim 1, wherein the smoothing unit (4) further comprises a smoothing cylinder (4b), the two movable members (4a) are connected with the smoothing cylinder (4b), the smoothing cylinders (4b) of the two groups of smoothing units (4) are connected with a positioning cylinder (6), the two groups of smoothing cylinders (4b) connected with the positioning cylinder (6) are adjacent, and the positioning cylinder (6) drives the smoothing cylinder (4b) to move and the moving direction of the smoothing cylinders (4b) is perpendicular to the moving direction of the movable members (4 a).
7. The automatic corner cutting machine for packaging films of packages according to claim 1, characterized in that the movable members (4a) are rod bodies, the outer sides of the two movable members (4a) of one group of smoothing units (4) are provided with 45-degree inclined slopes (7), and the slopes (7) are matched with the sharp corners of the packaging films.
8. Automatic corner cutting machine for packaging films for packets according to claim 1, characterized in that said straightening means (8) are second jaw cylinders, below said straightening means (8) there being placed a scrap collecting device (11).
9. The automatic corner cutting machine for packaging films for packages according to claim 1, characterized in that said transport mechanism (13) comprises a transport rail (13a) and a plurality of first jaw cylinders (13b) set up and down, said first jaw cylinders (13b) being mounted slidingly on said transport rail (13 a).
CN201920798159.0U 2019-05-30 2019-05-30 Automatic packaging film corner cutting machine for packaging box Active CN210192019U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920798159.0U CN210192019U (en) 2019-05-30 2019-05-30 Automatic packaging film corner cutting machine for packaging box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920798159.0U CN210192019U (en) 2019-05-30 2019-05-30 Automatic packaging film corner cutting machine for packaging box

Publications (1)

Publication Number Publication Date
CN210192019U true CN210192019U (en) 2020-03-27

Family

ID=69875479

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920798159.0U Active CN210192019U (en) 2019-05-30 2019-05-30 Automatic packaging film corner cutting machine for packaging box

Country Status (1)

Country Link
CN (1) CN210192019U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110104285A (en) * 2019-05-30 2019-08-09 苏州威兹泰克自动化科技有限公司 A kind of packaging film automatic angle cutting machine for packing box
CN110104285B (en) * 2019-05-30 2024-04-26 苏州威兹泰克自动化科技有限公司 Automatic corner cutting machine for packaging film of packaging box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110104285A (en) * 2019-05-30 2019-08-09 苏州威兹泰克自动化科技有限公司 A kind of packaging film automatic angle cutting machine for packing box
CN110104285B (en) * 2019-05-30 2024-04-26 苏州威兹泰克自动化科技有限公司 Automatic corner cutting machine for packaging film of packaging box

Similar Documents

Publication Publication Date Title
US11192746B2 (en) Cutter blade dual side film sealing and packing assembly
CN104418106B (en) Stacking apparatus
CN1217693A (en) Method and apparatus for packaging series of articles in different formations
CN112296673B (en) Assembly equipment of plastic assembly integration
CN108820398B (en) Automatic cutter packaging line
EP3965997B1 (en) Sorting system for a machine tool, machine tool and method for sorting cut parts
CN212196024U (en) Stamp envelope packaging equipment
CN216003205U (en) Packaging stacker
CN210192019U (en) Automatic packaging film corner cutting machine for packaging box
CN110902456A (en) Code spraying counting and collecting machine
CN216186243U (en) Full-automatic secondary packaging device for hot melt adhesive
CN110104285B (en) Automatic corner cutting machine for packaging film of packaging box
CN213504786U (en) Carton discharge mechanism
CN209905827U (en) Bottle stacking machine for beer glass bottles
JP6244720B2 (en) Delivery device for bag making machine
CN112122486A (en) High efficiency jar body automation line
CN214986389U (en) Stacking device and bag arranging machine
US6325592B1 (en) Method and device for removing printed products from a conveying stream and for stacking the removed printed products
CN216333124U (en) Automatic release device for packaging bag
CN216211065U (en) Card sender mechanism
CN217171087U (en) Automatic packaging machine
CN213263082U (en) Automatic paperboard arranging equipment
CN109647720A (en) A kind of automatic sorting method of logistics package
CN110104285A (en) A kind of packaging film automatic angle cutting machine for packing box
CN220430692U (en) Ribbon feeding device of slipper machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant