CN106041174A - Chip removal box for deep-hole drilling machine - Google Patents
Chip removal box for deep-hole drilling machine Download PDFInfo
- Publication number
- CN106041174A CN106041174A CN201610575626.4A CN201610575626A CN106041174A CN 106041174 A CN106041174 A CN 106041174A CN 201610575626 A CN201610575626 A CN 201610575626A CN 106041174 A CN106041174 A CN 106041174A
- Authority
- CN
- China
- Prior art keywords
- chip removal
- hole
- removal case
- guide pin
- pin bushing
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
Abstract
The invention provides a chip removal box for a deep-hole drilling machine. The chip removal box comprises a first box wall, an ejector sleeve and a guide sleeve, wherein a penetrating hole, a transition cavity and a supporting hole are formed in the first box wall; a lug boss is formed on the excircle of the ejector sleeve; the ejector sleeve is inserted into the penetrating hole, the lug boss is located in the transition cavity, and the ejector sleeve can slide in the penetrating hole in the axial direction; the guide sleeve is inserted into the supporting hole, the excircle of the guide sleeve is in sealing match with the wall of the supporting hole, and the guide sleeve can slide in the supporting hole in the axial direction; and a spring is arranged between the transition cavity and the lug boss, the ejector sleeve and the guide sleeve fit with each other and are mutually sealed, and the spring can push the ejector sleeve and the guide sleeve to slide outwards. Owing to the mode that the spring ejects and pushes the sliding guide sleeve and ejector sleeve, the guide sleeve is mounted in the way of clinging to a workpiece, so that a cooling medium and the guide sleeve are prevented from being thrown away; and as the guide sleeve and the ejector sleeve are sealed with all connection parts in the sliding process, the phenomenon that resetting becomes difficult or the guide sleeve gets stuck, caused by the reason that such impurities as scrap iron are clamped into the spring, is avoided. The chip removal box is smart in structural design, obvious in getting-stuck prevention effect, simple in structure and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of chip removal case, particularly relate to a kind of chip removal case for deep hole drilling machine.
Background technology
Gun drilling generally refers to the draw ratio hole system drilling more than 10, when gun drilling it is generally required to special customization
Lathe uses specific Drill Techniques to carry out, and what deep hole equipment currently advanced, high efficiency used is all interior cold pressure external chip discharging
Drilling mode, the cutter of employing mostly is drill gun, and cooling medium arrives drill bit head, directly to brill by the drill gun of hollow is internal
Cut position to carry out cooling and lubricating, and the chip area that iron filings cutting got off are from drill gun are forced to go out, reach the mesh of chip removal
's.
But, existing chip removal case sealing property is very poor, and iron filings and cooling medium easily throw away from aperture, cause and cut
Journey sheds water clock, pollutes working environment, also result in the consumption of cooling medium simultaneously, cause certain waste.
Summary of the invention
The technical problem to be solved in the present invention is: gets rid of oil when gun drilling to solve existing chip removal case and sheds iron filings
Problem, the invention provides a kind of chip removal case for deep hole drilling machine to solve the problems referred to above.
The technical solution adopted for the present invention to solve the technical problems is: a kind of chip removal case for deep hole drilling machine, including
First tank wall, also includes top cover and guide pin bushing, on described first tank wall by inner and be externally provided be sequentially communicated connect perforation, adapter cavity and
Supported hole, described in connect perforation connect with the inside of chip removal case, described supported hole and ft connection；On the cylindrical of described top cover,
The end of nearly one end is provided with radially projecting boss, and the cylindrical of described top cover seals with the hole wall connecing perforation and coordinates；Described
Top cover connects in perforation described in inserting, and described boss is positioned at described adapter cavity, and described top cover can slide axially in connecing perforation；
Described guide pin bushing inserts in described supported hole, and the cylindrical of guide pin bushing and the hole wall of supported hole seal and coordinate, and described guide pin bushing can be at supported hole
Inside slide axially；It is provided with, between inner side plane and the described boss of described adapter cavity proximity perforation, the bullet being in compressive state
Spring, the end face of the nearly boss of top cover and the inner face of guide pin bushing are bonded to each other and seal, the through hole of described top cover and the through hole of guide pin bushing
Connect；Described spring can promote top cover and guide pin bushing to slide in and out, and is outwards pushed up the outer face of guide pin bushing and stretches out the first tank wall.
Further: along the centerline direction of supported hole, second tank wall relative with the described position connecing perforation is opened
Being provided with installation groove, described installation groove is arranged concentrically with supported hole, and the bottom land installing groove is provided with the inside with chip removal case even
Logical through hole, is provided with bearing in installing groove, and described chip removal case also includes oil scraper ring, and the cylindrical of described oil scraper ring embeds bearing
Inner ring hole wall install.
Further: described oil scraper ring is provided with the V-arrangement through hole for installing drill gun.
Further: also include that bearing baffle, described bearing baffle are arranged on the outside of bearing.
Further: the outer face of described guide pin bushing is provided with the sealing gasket of annular, and the material of described sealing gasket is polyurethane.
Further: the bottom of the casing of described chip removal case is provided with chip removal mouth.
Further: the upper opening of described chip removal case, described chip removal case also includes that cover plate, the material of described cover plate are
Bright plastics, described cover plate covers at the upper opening of chip removal case.
The invention has the beneficial effects as follows, a kind of chip removal case for deep hole drilling machine of the present invention, by using spring top sliding
Dynamic guide pin bushing and the mode of top cover ensure that guide pin bushing is close to workpiece and is installed, and prevent cooling medium and guide pin bushing from throwing away, simultaneously guide pin bushing and
Top cover keeps and the sealing state of each connection member in sliding process, it is to avoid the impurity such as iron filings snap in spring inner and cause multiple
The phenomenon that position is difficult or guide pin bushing is stuck, this smart structural design, anti-seize effect is obvious, and simple in construction, and manufacturing cost is relatively
Low.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of a kind of chip removal case optimum embodiment for deep hole drilling machine of the present invention；
Fig. 2 is the structural representation of guide pin bushing；
Fig. 3 is the first tank wall and the structural representation of the second tank wall of chip removal case.
1, first tank wall in figure, 2, connect perforation, 3, adapter cavity, 4, supported hole, 5, top cover, 6, spring, 7, guide pin bushing, 8, seal
Pad, the 9, second tank wall, 10, bearing, 11, oil scraper ring, 12, bearing baffle, 13, groove, 14, chip removal mouth, 15, cover plate, 51, convex
Platform.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.On the contrary, originally
Inventive embodiment includes all changes in the range of the spirit falling into attached claims and intension, revises and be equal to
Thing.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axially ",
" radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or position relationship, merely to just
In describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation, with
Specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicate or imply relatively important
Property.In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is connected ", " connection " should
It is interpreted broadly, connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.Common for this area
For technical staff, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.Additionally, in description of the invention
In, except as otherwise noted, " multiple " are meant that two or more.
In flow chart or at this, any process described otherwise above or method description are construed as, and expression includes
One or more is for realizing the module of code, fragment or the portion of the executable instruction of the step of specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not by shown or discuss suitable
Sequence, including according to involved function by basic mode simultaneously or in the opposite order, performs function, and this should be by the present invention
Embodiment person of ordinary skill in the field understood.
As shown in Figure 1 to Figure 3, the invention provides a kind of chip removal case for deep hole drilling machine, including the first tank wall 1, also
Including top cover 5 and guide pin bushing 7, on described first tank wall 1 by inner and be externally provided be sequentially communicated connect perforation 2, adapter cavity 3 and supported hole
4, described in connect perforation and 2 connect with the inside of chip removal case, described supported hole 4 and ft connection；On the cylindrical of described top cover 5, closely
The end of one end is provided with radially projecting boss 51, and the cylindrical of described top cover 5 seals with the hole wall connecing perforation 2 and coordinates；Institute
State top cover 5 insert described in connect perforation 2 in, described boss 51 is positioned at described adapter cavity 3, described top cover 5 can connect perforation 2 in edge
Slide axially；Described guide pin bushing 7 inserts in described supported hole 4, and the hole wall of the cylindrical of guide pin bushing 7 and supported hole 4 seals and coordinates, described in lead
Set 7 can slide axially in supported hole 4；It is provided with between inner side plane and the described boss 51 of described adapter cavity 3 proximity perforation 2
It is in the spring 6 of compressive state, the end face of the nearly boss 51 of top cover 5 and the inner face of guide pin bushing 7 bonded to each other and seal, described top
The through hole of set 5 is connected with the through hole of guide pin bushing 7；Described spring 6 can promote top cover 5 and guide pin bushing 7 to slide in and out, by the outer end of guide pin bushing 7
Face out top and stretch out the first tank wall 1.
When not having workpiece to load, the guide pin bushing 7 on chip removal case is stretched out outside the first tank wall 1 by spring 6 top, when workpiece loads,
Workpiece is by guide pin bushing 7 pushing tow in supported hole 4, and optimum way is that the planar top of workpiece is pushed into the outside patch with the first tank wall 1
Closing, so can ensure that spring 6 is in the maximum state measured by compression, spring 6 is maximum to the thrust that top cover 5 and guide pin bushing 7 are outside,
Can ensure that guide pin bushing 7 and workpiece laminating are reliable, and, the outside laminating of workpiece and the first tank wall 1 can ensure that workpiece fills every time
The position consistency of resetting during folder.
After workpiece completes clamping, the drill bit of drill gun penetrates in chip removal case, and passes in the middle of guide pin bushing 7, then to workpiece
Carry out drilling, on the one hand, the rifle head of drill gun can be guided by guide pin bushing 7, and at the initial stage that particularly drilling starts, this guiding is outstanding
For important, by the guide pin bushing 7 initial guiding to drill bit drilling, it is ensured that the drill position of drill bit and pierce angle and do not have
Deviation, and then can ensure that the linearity of the fashionable deep hole of follow-up depth drill, on the other hand, chip removal process can be risen by guide pin bushing 7
Sealing function, drill gun has the cooling medium of pressure when cutting and is sprayed by the Cooling Holes of drill gun, and the iron filings that drilling is got off can be by
Effect in cooling medium is discharged by the chip area on drill gun, and the aperture of drilling can be risen the most straight by the guide pin bushing 7 on chip removal case
The sealing protective effect connect, prevents iron filings and cooling medium from throwing away, and guide pin bushing 7 can guide cooling medium and iron filings to flow into, then passes through
Top cover 5 arrives in chip removal case, top cover 5 and connect perforation 2 between seal, between top cover 5 and guide pin bushing 7 end face seal, guide pin bushing 7 and support
Sealing between hole 4, the sealing of this three can ensure that iron filings will not enter in adapter cavity 3, it is to avoid the spring 6 in adapter cavity 3
Blocked by iron filings and occur guide pin bushing 7 and top cover 5 to move axially stuck situation so that the guide pin bushing 7 of chip removal case is on workpiece end face
Sealing relatively reliable.
Along the centerline direction of supported hole 4, second tank wall 9 relative with the described position connecing perforation 2 offers peace
Dress groove 13, described installation groove 13 is arranged concentrically with supported hole 4, and the bottom land installing groove 13 is provided with the inside with chip removal case even
Logical through hole, is provided with bearing 10 in installing groove 13, and described chip removal case also includes oil scraper ring 11, the cylindrical of described oil scraper ring 11
The hole wall of the inner ring embedding bearing 10 is installed.
Oil scraper ring 11 is arranged on and connects on perforation 2 the second relative tank walls 9, and in drilling process, drill gun is through gear
Oil ring 11 enters in chip removal case, then is passed by guide pin bushing 7, on the one hand, drill gun and chip removal case can be played sealing by oil scraper ring 11
Effect, prevents from passing in cooling medium and the iron filings space by drill gun and the junction of chip removal case, and on the other hand, oil scraper ring 11 can
So that drill gun to be played a supportive role, reduce the shake of drill gun so that drilling process is more steady.
Described oil scraper ring 11 is provided with the V-arrangement through hole for installing drill gun, and the V-arrangement through hole in oil scraper ring 11 is used for and drill gun
On V-arrangement chip area fit, improve oil scraper ring 11 sealing property.
Also include that bearing baffle 12, described bearing baffle 12 are arranged on the outside of bearing 10, the bearing gear outside bearing 10
Plate 12 is possible to prevent to creep at drilling process middle (center) bearing 10 to come off from chip removal case.
The outer face of described guide pin bushing 7 is provided with the sealing gasket 8 of annular, and the material of described sealing gasket 8 is polyurethane.Annular
The sealing gasket 8 of polyurethane material can improve the sealability between guide pin bushing 7 and workpiece further, prevents cooling medium or ferrum
Bits throw away.
The bottom of the casing of described chip removal case is provided with chip removal mouth 14, and the chip removal mouth 14 of bottom makes by guide pin bushing 7 row of entering into
Cooling medium and iron filings in bits case can be discharged in time from chip removal case, reserve enough chip space to chip removal case.
The upper opening of described chip removal case, described chip removal case also includes that cover plate 15, the material of described cover plate 15 are transparent moulding
Material, described cover plate 15 covers at the upper opening of chip removal case.Transparent cover plate 15 covers the opening part above chip removal case, behaviour
Author can grasp drilling state by the drill gun chip removal situation in observation chip removal case, and the drill gun preventing chip removal from the most freely causing breaks
The contingency such as split.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of described term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely can carry out various change and amendment in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.
Claims (7)
1. for a chip removal case for deep hole drilling machine, including the first tank wall (1), it is characterised in that: also include top cover (5) and guide pin bushing
(7), on described first tank wall (1) by inner and be externally provided be sequentially communicated meet perforation (2), adapter cavity (3) and supported hole (4), institute
State and connect perforation (2) and connect with the inside of chip removal case, described supported hole (4) and ft connection；On the cylindrical of described top cover (5),
The end of nearly one end is provided with radially projecting boss (51), the cylindrical of described top cover (5) and the hole wall connecing perforation (2) and seals
Coordinate；Described top cover (5) connects in perforation (2) described in inserting, and described boss (51) is positioned at described adapter cavity (3), described top cover
(5) can slide axially in connecing perforation (2)；Described guide pin bushing (7) inserts in described supported hole (4), the cylindrical of guide pin bushing (7) and
The hole wall of support hole (4) seals and coordinates, and described guide pin bushing (7) can slide axially in supported hole (4)；Described adapter cavity (3) proximity
It is provided with, between inner side plane and the described boss (51) of perforation (2), the spring (6) being in compressive state, the nearly boss of top cover (5)
(51) end face and the inner face of guide pin bushing (7) are bonded to each other and seal, the through hole of described top cover (5) and the through hole of guide pin bushing (7)
Connect；Described spring (6) can promote top cover (5) and guide pin bushing (7) to slide in and out, and is outwards pushed up the outer face of guide pin bushing (7) and stretches out
One tank wall (1).
A kind of chip removal case for deep hole drilling machine, it is characterised in that: along the center of supported hole (4)
Line direction, offers installation groove (13), described installation on the second tank wall (9) relative with the described position connecing perforation (2)
Groove (13) is arranged concentrically with supported hole (4), and the bottom land installing groove (13) is provided with the through hole that the inside with chip removal case connects, peace
Being provided with bearing (10) in dress groove (13), described chip removal case also includes oil scraper ring (11), and the cylindrical of described oil scraper ring (11) is embedding
The hole wall of the inner ring entering bearing (10) is installed.
A kind of chip removal case for deep hole drilling machine, it is characterised in that: described oil scraper ring sets on (11)
There is the V-arrangement through hole for installing drill gun.
A kind of chip removal case for deep hole drilling machine, it is characterised in that: also include bearing baffle
(12), described bearing baffle (12) is arranged on the outside of bearing (10).
A kind of chip removal case for deep hole drilling machine, it is characterised in that: the outer end of described guide pin bushing (7)
Face is provided with the sealing gasket (8) of annular, and the material of described sealing gasket (8) is polyurethane.
A kind of chip removal case for deep hole drilling machine, it is characterised in that: the casing of described chip removal case
Bottom is provided with chip removal mouth (14).
A kind of chip removal case for deep hole drilling machine, it is characterised in that: the top of described chip removal case is opened
Mouthful, described chip removal case also includes that cover plate (15), the material of described cover plate (15) they are transparent plastic, and described cover plate (15) covers row
At the upper opening of bits case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575626.4A CN106041174B (en) | 2016-07-20 | 2016-07-20 | A kind of chip removal case for deep hole drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575626.4A CN106041174B (en) | 2016-07-20 | 2016-07-20 | A kind of chip removal case for deep hole drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106041174A true CN106041174A (en) | 2016-10-26 |
| CN106041174B CN106041174B (en) | 2018-12-18 |
Family
ID=57187434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610575626.4A Active CN106041174B (en) | 2016-07-20 | 2016-07-20 | A kind of chip removal case for deep hole drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106041174B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014780A (en) * | 2019-11-23 | 2020-04-17 | 浙江赫洛金属制品有限公司 | Drill bit chip removing device for CNC (computer numerical control) drilling machine |
| CN113670486A (en) * | 2021-09-14 | 2021-11-19 | 王星星 | Weighing pressure sensor with high working efficiency |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001162488A (en) * | 1999-12-14 | 2001-06-19 | Sugino Mach Ltd | Gun-drilling machine |
| CN202180375U (en) * | 2011-07-15 | 2012-04-04 | 常熟市中恒数控设备制造有限公司 | Leakage-free externally-discharged scrap collection device for numerical control drilling machine |
| CN203044988U (en) * | 2013-01-23 | 2013-07-10 | 南阳市中捷数控科技有限公司 | Guide positioning jacking device of lathe |
| CN203091797U (en) * | 2013-01-23 | 2013-07-31 | 南阳市中捷数控科技有限公司 | Rotary clamping device |
| CN203526642U (en) * | 2013-11-11 | 2014-04-09 | 上海宁远精密机械有限公司 | Puller type guide chip removal mechanism |
| CN204639771U (en) * | 2015-05-13 | 2015-09-16 | 上海宁远精密机械有限公司 | A kind of special chip removal draw box mechanism |
| CN205888158U (en) * | 2016-07-20 | 2017-01-18 | 江苏腾旋科技股份有限公司 | A chip removal case for deep -hole drilling machine |
-
2016
- 2016-07-20 CN CN201610575626.4A patent/CN106041174B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001162488A (en) * | 1999-12-14 | 2001-06-19 | Sugino Mach Ltd | Gun-drilling machine |
| CN202180375U (en) * | 2011-07-15 | 2012-04-04 | 常熟市中恒数控设备制造有限公司 | Leakage-free externally-discharged scrap collection device for numerical control drilling machine |
| CN203044988U (en) * | 2013-01-23 | 2013-07-10 | 南阳市中捷数控科技有限公司 | Guide positioning jacking device of lathe |
| CN203091797U (en) * | 2013-01-23 | 2013-07-31 | 南阳市中捷数控科技有限公司 | Rotary clamping device |
| CN203526642U (en) * | 2013-11-11 | 2014-04-09 | 上海宁远精密机械有限公司 | Puller type guide chip removal mechanism |
| CN204639771U (en) * | 2015-05-13 | 2015-09-16 | 上海宁远精密机械有限公司 | A kind of special chip removal draw box mechanism |
| CN205888158U (en) * | 2016-07-20 | 2017-01-18 | 江苏腾旋科技股份有限公司 | A chip removal case for deep -hole drilling machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014780A (en) * | 2019-11-23 | 2020-04-17 | 浙江赫洛金属制品有限公司 | Drill bit chip removing device for CNC (computer numerical control) drilling machine |
| CN111014780B (en) * | 2019-11-23 | 2021-06-15 | 浙江赫洛金属制品有限公司 | Drill bit chip removing device for CNC (computer numerical control) drilling machine |
| CN113670486A (en) * | 2021-09-14 | 2021-11-19 | 王星星 | Weighing pressure sensor with high working efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106041174B (en) | 2018-12-18 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Chip removal box for deep-hole drilling machine Effective date of registration: 20190529 Granted publication date: 20181218 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi science and Technology Branch Pledgor: Jiangsu Tengxuan Technology Co.Ltd. Registration number: 2019990000483 |
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Date of cancellation: 20230328 Granted publication date: 20181218 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi science and Technology Branch Pledgor: Jiangsu Tengxuan Technology Co.Ltd. Registration number: 2019990000483 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |