CN114406383A - Clamping device and clamping method for electrode of spark machine - Google Patents
Clamping device and clamping method for electrode of spark machine Download PDFInfo
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- CN114406383A CN114406383A CN202210191114.3A CN202210191114A CN114406383A CN 114406383 A CN114406383 A CN 114406383A CN 202210191114 A CN202210191114 A CN 202210191114A CN 114406383 A CN114406383 A CN 114406383A
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- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention provides a spark machine electrode clamping device and a clamping method, wherein the clamping device comprises a cross-shaped guide rail, a linkage driving assembly, a supporting plate I, clamping rods, a spring I, a locking mechanism and a cross-shaped supporting frame, wherein the four executing components of the linkage driving assembly are respectively provided with the supporting plate I, the clamping rods are arranged in through holes in the supporting plate I in a matched mode, the spring I is arranged between the clamping rods and the supporting plate I, the end parts of the clamping rods are provided with V-shaped clamping parts, the cross-shaped supporting frame forms moving pairs in the vertical direction, the four locking mechanisms are respectively arranged at four corners of the cross-shaped guide rail, and each locking mechanism comprises a supporting plate II, a limiting rod I, a semicircular clamping head and a top plate. The electrode is clamped through the movably mounted clamping rod, so that the electrode clamping device can adapt to electrodes in different shapes, the clamping rod for flexibly clamping is locked in position through the locking mechanism, and the clamping force of the electrode is guaranteed.
Description
Technical Field
The invention relates to the technical field of spark machines, in particular to a clamping device and a clamping method for an electrode of a spark machine.
Background
Publication No. CN205967698U provides a clamp for spark machine, including fixed clamp splice, fastening screw, the activity clamp splice of being connected with fixed clamp splice through fastening screw, the adjusting screw that is located the fastening screw top, the upper end of fixed clamp splice is fixed on the spark machine main shaft, be provided with between fixed clamp splice and the activity clamp splice and be used for making the activity clamp splice along being on a parallel with the slip guide part of fastening screw axial displacement.
According to the prior art, the movable clamping block moves along the axial direction parallel to the fastening screw under the guiding action of the sliding guide part until the side face of the movable clamping block is abutted against the side face of the end part of the electrode block for clamping, the adjusting screw is rotated, the adjusting screw and the electrode block are respectively positioned at two sides of the fastening screw, then the fastening screw is rotated, the clamping of the electrode block is realized, and the side face of the electrode block for clamping the end part is attached to the side face of the movable clamping block.
As is apparent from the above-described conventional clamping method, the leveling process cannot be performed in a situation where the electrode is inclined forward and backward during the clamping, and since no clamping member acts on the electrode in the forward and backward direction, the machining effect is likely to be affected by unevenness of the electrode.
Disclosure of Invention
The invention aims to provide a clamping device and a clamping method for an electrode of a spark machine, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a spark machine electrode clamping device, includes cross guide rail, linkage drive subassembly, backup pad I, supporting rod, spring I, locking mechanism and cross support frame, respectively be equipped with a backup pad I on four executive component of linkage drive subassembly, wherein four backup pads I enclose squarely, and then the linkage drive subassembly can drive I synchronous to the central direction motion of being close to or keeping away from the cross guide rail of four backup pads, wherein:
a clamping rod is arranged in the through hole in the supporting plate I in a matched mode, a spring I is arranged between the clamping rod and the supporting plate I, a V-shaped clamping part is arranged at one end, close to the center direction of the cross-shaped guide rail, of the clamping rod, the cross-shaped supporting frame is matched with the cross-shaped guide rail through a supporting rod at the bottom of the cross-shaped supporting frame and forms a moving pair in the vertical direction, four locking mechanisms are arranged at four corners of the cross-shaped guide rail respectively and comprise a supporting plate II, a limiting rod I, a semicircular clamping head and a top plate, the supporting plate II is connected with the cross-shaped guide rail, the limiting rod I is arranged in the through hole in the supporting plate II in a matched mode, the semicircular clamping head is arranged at the end portion of the limiting rod I and faces the clamping rod, the semicircular clamping head can limit the clamping rod when the semicircular clamping head is in contact with the clamping rod, and the top plate is connected with the cross-shaped supporting frame, and the tip of gag lever post I contacts with the plane portion of roof, is equipped with the bellying on wherein the roof, can promote the I displacement of gag lever post when bellying and the I contact of gag lever post.
Preferably, the supporting plate II is provided with a limiting component for limiting the movement of the top plate.
Preferably, spacing subassembly comprises gag lever post II, rubber pad and spring II, II movable mounting of gag lever post are equipped with spring II between gag lever post II and the backup pad II in the through-hole on backup pad II, and the tip of gag lever post II is equipped with the rubber pad, wherein the rubber pad contacts with the roof.
Preferably, the linkage driving assembly comprises a sliding block, a rotary table and a connecting rod, wherein the sliding block is respectively installed in four mutually independent guide grooves in the cross-shaped guide rail in a matched mode, the rotary table is installed on the cross-shaped guide rail in a rotating mode, the sliding block is connected with the rotary table through the connecting rod, and the sliding block, the rotary table and the connecting rod are hinged.
Preferably, the support plate I is connected with a sliding block.
Preferably, the bottom of the cross-shaped support frame is provided with a friction disc, wherein the friction disc faces the rotating disc and has a gap with the rotating disc.
A clamping method of a spark machine electrode clamping device comprises the following steps:
s1, inserting the electrode between the four support plates I, wherein the V-shaped clamping part at the end part of the clamping rod is contacted with the side surface of the electrode;
s2, when the V-shaped clamping part is contacted with the side face of the electrode, the clamping rod extrudes the spring I, so that the spring I contracts, the contracted spring I applies thrust to the clamping rod, and the V-shaped clamping part is attached to the side face of the electrode;
s3, rotating the turntable, driving the sliding blocks to displace along the cross-shaped guide rail through the connecting rods, driving the supporting plates I to approach each other through the four sliding blocks, and further increasing the clamping force of the V-shaped clamping parts to the electrodes;
s4, pulling the limiting rod II to enable the rubber pad to be separated from the top plate, and then lifting the top plate can be achieved;
s5, the cross-shaped supporting frame moves downwards, the friction disc is in contact with the rotary disc, the effect of limiting rotation of the rotary disc is achieved, the top plate moves downwards when the cross-shaped supporting frame moves downwards, the protruding portion on the top plate is in contact with the limiting rod I to further push the limiting rod I to move, the semicircular clamping head at the end portion of the limiting rod I is attached to the clamping rod, locking of the position of the clamping rod is achieved, and clamping of the electrode is completed.
Compared with the prior art, the invention has the beneficial effects that:
the electrode clamping device clamps the electrode through the movably installed clamping rod, so that the electrode clamping device can adapt to electrodes in different shapes, the clamping rod for flexible clamping is locked through the locking mechanism, the clamping force on the electrode is guaranteed, the clamping rod is driven to move by the synchronously moving support plate I, so that the clamping force is applied to the electrode, the electrode can be guaranteed to be in a horizontal state by the synchronously acting clamping force, and the condition that the electrode is inclined to affect processing is avoided.
Drawings
FIG. 1 is a three-dimensional schematic of the overall structure of the present invention;
FIG. 2 is a front view of the overall structure of the present invention;
FIG. 3 is a full sectional view of the overall structure of the present invention;
FIG. 4 is a schematic view of portion A of FIG. 2;
in the figure: 1 cross guide rail, 2 linkage drive assembly, 3 backup pad I, 4 supporting rods, 5 spring I, 6 locking mechanical system, 7 cross support frame, 21 sliders, 22 carousel, 23 connecting rod, 61 backup pad II, 62 gag lever post I, the semicircular clamping head of 63, 64 roof, 71 friction disk, 611 gag lever post II, 612 rubber pads, 613 spring II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 1 to 4, the present invention provides a technical solution:
the utility model provides a spark machine electrode clamping device, includes cross guide rail 1, linkage drive assembly 2, backup pad I3, supporting rod 4, spring I5, locking mechanical system 6 and cross support frame 7, wherein:
the linkage driving assembly 2 comprises sliders 21, a turntable 22 and a connecting rod 23, the four sliders 21 are respectively installed in four mutually independent guide grooves in the cross-shaped guide rail 1 in a matched mode, and a moving pair is formed in the guide grooves, wherein the interval between every two adjacent sliders 21 is ninety degrees, the turntable 22 is installed on the cross-shaped guide rail 1 in a rotating mode, the sliders 21 are connected with the turntable 22 through the connecting rod 23, the sliders 21, the turntable 22 and the connecting rod 23 are hinged, the four sliders 21 can be drawn close to or spread outwards when the turntable 22 rotates, supporting plates I3 are respectively arranged on the four sliders 21 of the linkage driving assembly 2, the four supporting plates I3 are square in surrounding mode, a clamping area is formed, and the linkage driving assembly 2 can drive the four supporting plates I3 to move towards the center direction close to or far away from the center direction of the cross-shaped guide rail 1 synchronously;
supporting plate I3 is gone up the through-hole fit and is installed clamping rod 4, wherein the central point of the directional cross guide rail 1 of central axis of clamping rod 4, and clamping rod 4 forms the sliding pair on its central axis direction, be equipped with spring I5 between clamping rod 4 and the supporting plate I3, and clamping rod 4 is close to the one end of cross guide rail 1 central direction and is equipped with V-arrangement clamping part, cross support frame 7 cooperates and forms the sliding pair on vertical direction with cross guide rail 1 through the bracing piece of its bottom, the bottom of cross support frame 7 is equipped with friction disc 71, wherein friction disc 71 faces carousel 22 and is gapped with between the carousel 22, and then can realize the effect of restricting the carousel 22 gyration when friction disc 71 contacts with carousel 22, four locking mechanical system 6 set up respectively in four corners of cross guide rail 1, locking mechanical system 6 includes supporting plate II 61, gag lever I62, The semi-circular clamping head 63 and the top plate 64, the support plate II 61 is connected with the cross-shaped guide rail 1, the limiting rod I62 is installed in a through hole on the support plate II 61 in a matched mode, a moving pair is formed in the through hole, the semi-circular clamping head 63 is arranged at the end portion of the limiting rod I62, the semi-circular clamping head 63 faces the clamping rod 4, when the semi-circular clamping head 63 is in contact with the clamping rod 4, the limiting of the clamping rod 4 can be achieved, the top plate 64 is connected with the cross-shaped support frame 7, the end portion of the limiting rod I62 is in contact with the plane portion of the top plate 64, a protruding portion is arranged on the top plate 64, when the protruding portion is in contact with the limiting rod I62, the limiting rod I62 can be pushed to move, a limiting component for limiting the movement of the top plate 64 is arranged on the support plate II 61, the limiting component is composed of a limiting rod II 611, a rubber pad 612 and a spring II 613, the limiting rod II 611 is movably installed in the through hole on the support plate II 61, a spring II 613 is arranged between the limiting rod II 611 and the supporting plate II 61, a rubber pad 612 is arranged at the end part of the limiting rod II 611, and the rubber pad 612 is in contact with the top plate 64, so that the effect of limiting the lifting of the top plate 64 is realized.
A clamping method of a spark machine electrode clamping device comprises the following steps:
s1, inserting the electrodes between the four support plates I3, and enabling the V-shaped clamping parts at the end parts of the clamping rods 4 to be in contact with the side faces of the electrodes, so that the electrodes are clamped in a pre-tightening mode;
s2, when the V-shaped clamping part is contacted with the side face of the electrode, the clamping rod 4 extrudes the spring I5, so that the spring I5 contracts, the contracted spring I5 applies thrust to the clamping rod 4, the V-shaped clamping part is attached to the side face of the electrode, the electrode is prevented from being separated from the V-shaped clamping part, the flexibly-installed clamping rod 4 can extend out of different lengths in a self-adaptive manner, and the electrodes in different shapes can be clamped;
s3, rotating the turntable 22, driving the sliders 21 to displace along the cross-shaped guide rail 1 through the connecting rod 23, driving the supporting plates I3 to approach each other by the four sliders 21, further increasing the clamping force of the V-shaped clamping portions on the electrodes, driving the clamping rods 4 to synchronously move by the supporting plates I3 approaching each other, contacting the V-shaped clamping portions at the ends of the clamping rods 4 with the electrodes, increasing the clamping force of the V-shaped clamping portions on the electrodes by the movement of the clamping rods 4 in the direction close to the electrodes, further realizing fastening, and enabling the clamping rods 4 to synchronously move in the fastening process, so that the V-shaped clamping portions synchronously move to achieve the centering clamping effect, further applying a centering acting force to the electrodes by the V-shaped clamping portions when the electrodes are inclined, and ensuring that the electrodes are kept in a horizontal state after the electrodes are clamped;
s4, pulling the limiting rod II 611 to enable the rubber pad 612 to be separated from the top plate 64, and then lifting the top plate 64 can be achieved;
s5, the cross-shaped support frame 7 moves downwards, the friction disc 71 is in contact with the rotary disc 22, the effect of limiting the rotation of the rotary disc 22 is achieved, the rotary disc 22 is prevented from rotating due to the reaction force generated by the electrode pair V-shaped clamping portion, the top plate 64 moves downwards when the cross-shaped support frame 7 moves downwards, the protruding portion of the top plate 64 is in contact with the limiting rod I62 to further push the limiting rod I62 to move, the semicircular clamping head 63 at the end portion of the limiting rod I62 is attached to the clamping rod 4 at the moment, the position of the clamping rod 4 is locked, the clamping of the electrode is completed, the limiting rod II 611 is loosened, the spring II 613 pulls the limiting rod II 611 to rebound, the rubber pad 612 is attached to the top plate 64 at the moment, and the limiting of the top plate 64 is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a spark machine electrode clamping device, includes cross guide rail (1), linkage drive assembly (2), backup pad I (3), supporting rod (4), spring I (5), locking mechanism (6) and cross support frame (7), respectively be equipped with a backup pad I (3) on four executive component of linkage drive assembly (2), wherein four backup pad I (3) enclose into squarely, and then linkage drive assembly (2) can drive the central direction motion of four I (3) of backup pad synchronous to being close to or keeping away from cross guide rail (1), its characterized in that:
the clamping rod (4) is installed in a matched mode in the through hole in the supporting plate I (3), a spring I (5) is arranged between the clamping rod (4) and the supporting plate I (3), one end, close to the center direction of the cross-shaped guide rail (1), of the clamping rod (4) is provided with a V-shaped clamping portion, the cross-shaped supporting frame (7) is matched with the cross-shaped guide rail (1) through a supporting rod at the bottom of the cross-shaped supporting frame and forms a moving pair in the vertical direction, four locking mechanisms (6) are respectively arranged at four corners of the cross-shaped guide rail (1), each locking mechanism (6) comprises a supporting plate II (61), a limiting rod I (62), a semicircular clamping head (63) and a top plate (64), the supporting plate II (61) is connected with the cross-shaped guide rail (1), the limiting rod I (62) is installed in the through hole in the supporting plate II (61) in a matched mode, the end portion of the limiting rod I (62) is provided with the semicircular clamping head (63), wherein semi-circular holding head (63) face clamping rod (4), can realize the spacing of clamping rod (4) when semi-circular holding head (63) and clamping rod (4) contact, roof (64) are connected with cross support frame (7), and the tip of gag lever post I (62) and the plane portion contact of roof (64), wherein are equipped with the bellying on roof (64), can promote gag lever post I (62) displacement when the bellying contacts with gag lever post I (62).
2. The electrode clamping device for the spark machine according to claim 1, wherein: and a limiting component for limiting the movement of the top plate (64) is arranged on the supporting plate II (61).
3. The electrode clamping device for the spark machine according to claim 2, wherein: the limiting assembly is composed of a limiting rod II (611), a rubber pad (612) and a spring II (613), the limiting rod II (611) is movably mounted in a through hole in the support plate II (61), the spring II (613) is arranged between the limiting rod II (611) and the support plate II (61), the rubber pad (612) is arranged at the end of the limiting rod II (611), and the rubber pad (612) is in contact with the top plate (64).
4. The electrode clamping device for the spark machine according to claim 1, wherein: linkage drive assembly (2) are including slider (21), carousel (22) and connecting rod (23), four slider (21) cooperate respectively to install in four mutually independent guide slots in cross guide rail (1), carousel (22) rotate to be installed on cross guide rail (1), and slider (21) are connected through connecting rod (23) with carousel (22), wherein are articulated between slider (21) and carousel (22) and connecting rod (23).
5. The electrode clamping device for the spark machine according to claim 4, wherein: the supporting plate I (3) is connected with the sliding block (21).
6. The electrode clamping device for the spark machine according to claim 4, wherein: the bottom of the cross-shaped support frame (7) is provided with a friction disc (71), wherein the friction disc (71) is opposite to the rotating disc (22) and has a gap with the rotating disc (22).
7. A clamping method of a spark machine electrode clamping device is characterized by comprising the following steps:
s1, inserting the electrode between the four support plates I (3), and enabling the V-shaped clamping part at the end part of the clamping rod (4) to be in contact with the side surface of the electrode;
s2, when the V-shaped clamping part is contacted with the side face of the electrode, the clamping rod (4) extrudes the spring I (5), so that the spring I (5) contracts, the contracted spring I (5) applies thrust to the clamping rod (4), and the V-shaped clamping part is attached to the side face of the electrode;
s3, rotating the turntable (22), driving the sliding blocks (21) to displace along the cross-shaped guide rail (1) through the connecting rods (23), and driving the supporting plates I (3) to be close to each other through the four sliding blocks (21) so as to increase the clamping force of the V-shaped clamping part on the electrodes;
s4, pulling the limiting rod II (611) to enable the rubber pad (612) to be separated from the top plate (64), and then lifting the top plate (64) can be achieved;
s5, move the cross-shaped support frame (7) downwards, so that the friction disc (71) is in contact with the rotary disc (22) to achieve the effect of limiting the rotation of the rotary disc (22), the top plate (64) moves downwards when the cross-shaped support frame (7) moves downwards, then the protruding part on the top plate (64) is in contact with the limiting rod I (62) to further push the limiting rod I (62) to move, the semicircular clamping head (63) at the end part of the limiting rod I (62) is attached to the clamping rod (4), locking of the position of the clamping rod (4) is further achieved, and clamping of the electrode is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210191114.3A CN114406383B (en) | 2022-03-01 | 2022-03-01 | Clamping device and clamping method for electrode of spark machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210191114.3A CN114406383B (en) | 2022-03-01 | 2022-03-01 | Clamping device and clamping method for electrode of spark machine |
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| Publication Number | Publication Date |
|---|---|
| CN114406383A true CN114406383A (en) | 2022-04-29 |
| CN114406383B CN114406383B (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210191114.3A Active CN114406383B (en) | 2022-03-01 | 2022-03-01 | Clamping device and clamping method for electrode of spark machine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008004052A1 (en) * | 2008-01-11 | 2009-07-16 | Mtu Aero Engines Gmbh | Component i.e. rotation-symmetric gas turbine major component, receiving device for high pressure water jet processing system, has cross-shaped base body provided with guiding rails, and stayers attached to guiding rails, respectively |
| CN103659312A (en) * | 2012-09-14 | 2014-03-26 | 綠點高新科技股份有限公司 | Electrode jig plate set structure |
| CN204867703U (en) * | 2015-08-10 | 2015-12-16 | 王宏武 | Electromechanical utmost point anchor clamps of spark |
| CN206326266U (en) * | 2016-12-22 | 2017-07-14 | 山东镭鸣数控激光装备有限公司 | A kind of automatic centering electronic rotation chuck |
| CN109732370A (en) * | 2019-03-18 | 2019-05-10 | 莱芜职业技术学院 | A kind of numerically-controlled machine tool clamp structure |
| CN112318053A (en) * | 2020-10-28 | 2021-02-05 | 毛晓鹏 | Be used for air compressor machine jar body welded to assemble location frock |
| CN112317893A (en) * | 2020-10-29 | 2021-02-05 | 深圳市米尔迪克精密机械科技有限公司 | Numerical control spark machine with high rigidity lathe structure |
-
2022
- 2022-03-01 CN CN202210191114.3A patent/CN114406383B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008004052A1 (en) * | 2008-01-11 | 2009-07-16 | Mtu Aero Engines Gmbh | Component i.e. rotation-symmetric gas turbine major component, receiving device for high pressure water jet processing system, has cross-shaped base body provided with guiding rails, and stayers attached to guiding rails, respectively |
| CN103659312A (en) * | 2012-09-14 | 2014-03-26 | 綠點高新科技股份有限公司 | Electrode jig plate set structure |
| CN204867703U (en) * | 2015-08-10 | 2015-12-16 | 王宏武 | Electromechanical utmost point anchor clamps of spark |
| CN206326266U (en) * | 2016-12-22 | 2017-07-14 | 山东镭鸣数控激光装备有限公司 | A kind of automatic centering electronic rotation chuck |
| CN109732370A (en) * | 2019-03-18 | 2019-05-10 | 莱芜职业技术学院 | A kind of numerically-controlled machine tool clamp structure |
| CN112318053A (en) * | 2020-10-28 | 2021-02-05 | 毛晓鹏 | Be used for air compressor machine jar body welded to assemble location frock |
| CN112317893A (en) * | 2020-10-29 | 2021-02-05 | 深圳市米尔迪克精密机械科技有限公司 | Numerical control spark machine with high rigidity lathe structure |
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| Publication number | Publication date |
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| CN114406383B (en) | 2022-12-20 |
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Denomination of invention: Spark electromechanical pole clamping device and clamping method Effective date of registration: 20231124 Granted publication date: 20221220 Pledgee: Jiangsu Rugao Rural Commercial Bank Co.,Ltd. Xuean sub branch Pledgor: Jiangsu sprite Intelligent Equipment Co.,Ltd. Registration number: Y2023980067653 |