CN116441459A - Shearing mechanism of screw heading cold heading machine - Google Patents
Shearing mechanism of screw heading cold heading machine Download PDFInfo
- Publication number
- CN116441459A CN116441459A CN202310498831.5A CN202310498831A CN116441459A CN 116441459 A CN116441459 A CN 116441459A CN 202310498831 A CN202310498831 A CN 202310498831A CN 116441459 A CN116441459 A CN 116441459A
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- rod
- groove
- scissor
- sliding block
- plate
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- 238000010008 shearing Methods 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
Abstract
The invention discloses a shearing mechanism of a screw heading cold heading machine, which comprises a scissor seat fixedly arranged with a machine table, wherein the scissor seat is provided with a transversely penetrating installation cavity, a limit driving plate is arranged in the installation cavity in a sliding manner, and the upper end surface of the limit driving plate is provided with a curve groove; the upper end face of the scissor seat is provided with a guide groove which longitudinally penetrates through, a scissor shaft is arranged in the guide groove in a sliding mode, and one end of the scissor shaft is connected with a cutting plate; the scissor shaft is provided with a longitudinal strip-shaped groove penetrating up and down, a sliding block is arranged in the longitudinal strip-shaped groove, and the lower end of the sliding block stretches into the curve groove; a guide rod is fixedly arranged in the longitudinal strip-shaped groove along the axial direction, a guide hole is axially arranged in the sliding block, the guide rod penetrates through the guide hole and is in sliding connection with the sliding block, a thread groove connected with the guide hole is formed in the upper end of the sliding block, and the thread groove is connected with the threaded rod; the invention has the advantages of better reliability and operability, higher precision and lower noise under the working condition of quick mass production.
Description
Technical Field
The invention relates to the technical field of cold heading machine equipment, in particular to a shearing mechanism of a screw heading cold heading machine.
Background
Screw heading cold heading machines, also commonly referred to as heading machines, button attaching machines, head wrapping machines, head binding machines, are now commonly produced domestically. The principle of the method is that according to the metal plastic deformation theory, a certain pressure is applied to a metal blank at normal temperature to generate plastic deformation in a die cavity, and the top of a bar or a wire rod is thickened and forged; the current market has higher requirements on equipment reliability, processing efficiency, processing precision and product quality stability.
The invention patent with publication number CN202079420U discloses a scissors adjusting and positioning device of a sealed round scissors heading machine, which is used for adjusting the movement of a shearing device for shearing and processing wires; the shearing device is provided with a pair of scissors and a connecting rod connected with the pair of scissors, and the connecting rod drives the pair of scissors to move for working; the adjusting and positioning device is provided with a transmission shaft, a cam and an adjusting structure are arranged on the transmission shaft, the adjusting structure comprises a locking piece sleeved on the transmission shaft and a positioning piece fixedly arranged on the transmission shaft, and the cam and the positioning piece are provided with a first positioning part and a second positioning part which are clamped mutually; the cam can be pushed by the locking piece to be clamped and positioned with the positioning piece, and can be driven by the transmission shaft to rotate and link the connecting rod; when the position of the scissors is to be adjusted, the locking piece is loosened to rotate the cam, and then the locking piece is locked to finish the adjustment, so that the effect of convenient operation is achieved.
The technical scheme has the defects that firstly, through loosening the locking piece and adjusting the cam to rotate, the initial position of the scissors can be adjusted only, the whole range of the scissors can not be adjusted, the function is limited, and secondly, the cam driving mode is adopted, when high-efficiency mass production is needed, the collision between the cam and the connecting rod is difficult to avoid, the noise is large, and the precision is low.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art and provides a shearing mechanism of a screw heading cold heading machine; under the working condition of quick batch production, the device has the advantages of better reliability and operability, higher precision and lower noise.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the shearing mechanism of the screw heading cold heading machine comprises a scissor seat fixedly installed with a machine table, wherein the scissor seat is provided with a transversely penetrating installation cavity, a limit driving plate is arranged in the installation cavity in a sliding manner, and a curve groove is formed in the upper end face of the limit driving plate; the upper end face of the scissor seat is provided with a guide groove which longitudinally penetrates through the scissor seat, a scissor shaft is arranged in the guide groove in a sliding mode, and one end of the scissor shaft is connected with a cutting plate; the scissor shaft is provided with a longitudinal strip-shaped groove penetrating up and down, a sliding block is arranged in the longitudinal strip-shaped groove, and the lower end of the sliding block stretches into the curve groove; the guide rod is fixedly arranged in the longitudinal strip-shaped groove along the axial direction, a guide hole is arranged in the sliding block along the axial direction, the guide rod penetrates through the guide hole and is in sliding connection with the sliding block, a thread groove connected with the guide hole is formed in the upper end of the sliding block, and the thread groove is connected with the threaded rod.
The cutting machine is characterized in that the other end of the scissor shaft is connected with an end plate, the upper portion of the end plate is rotationally connected with a swing rod, the swing rod is connected with a supporting seat fixed with a machine table, the end part of the swing rod is rotationally connected with a clamping plate, a reset spring is connected between the clamping plate and the swing rod, the lower end of the clamping plate is in butt joint with the cutting plate, and a wire clamping groove is formed in the end face of one side of the cutting plate, which is close to the clamping plate.
The lower side of the swing rod is provided with a notch; after the deflector rod of the machine table tilts the swinging rod, the swinging rod drives the clamping plate to be separated from the cutting plate, so that the metal wire is separated, the swinging rod drives the scissor shaft to retract, when the deflector rod is positioned in the notch, the swinging rod descends, and the clamping plate and the cutting plate clamp the subsequent metal wire.
The driving device is characterized by further comprising a driving gear, wherein a transmission rod is rotationally connected to the eccentric part of one side end face of the driving gear, and one end of the transmission rod is rotationally connected with one end of the limiting driving plate.
The transmission rod comprises a first connecting rod, a second connecting rod, a first nut, a second nut and an adjusting sleeve, wherein one end of the first connecting rod is connected with the first nut and the adjusting sleeve through threads, and the first nut is abutted with one end of the adjusting sleeve; one end of the second connecting rod is connected with the second nut and the adjusting sleeve through threads, and the second nut is abutted to the other end of the adjusting sleeve.
The driving gear comprises a gear disc and an adjusting disc rotationally connected with the gear disc, the adjusting disc is provided with a plurality of arc grooves which are in common circles, the adjusting disc is connected with a bolt penetrating through the arc grooves, and the bolt is fixed with the gear disc; the outside fixedly connected with round pin axle of adjustment disk, the transfer line with the round pin axle rotates to be connected.
The curve groove comprises a first transverse groove and a second transverse groove, the first transverse groove and the second transverse groove are equal in width, parallel and non-collinear, and an arc groove is arranged between the first transverse groove and the second transverse groove for transition connection; the lower end of the sliding block is connected with a cylindrical shell, and the diameter of the cylindrical shell is the same as the width of the curve groove.
The scissors seat is connected with an adjusting screw through threads, the adjusting screw is parallel to the scissors shaft, and one end of the adjusting screw is in butt joint with the end part of the scissors shaft.
Compared with the prior art, the invention has the beneficial effects that:
the limiting driving plate is arranged to transversely reciprocate in the scissor seat, the sliding block and the scissor shaft are driven to reciprocate through the curved groove, the transverse motion is converted into longitudinal motion, the shearing and the transferring of the metal wire are realized, and under the working condition of rapid mass production, the reliability and the operability are better, the precision is higher, and the noise is lower;
through the vertical bar groove that runs through from top to bottom is established at the scissors axle, and the slider can be followed the guide bar and slided at vertical bar groove, through screwing up the threaded rod, can lock the position of slider to both can finely tune the initial position of scissors axle, keep sufficient rigidity again, make the position of moving material, blank more accurate, can not block the material, the reliability is higher.
Drawings
FIG. 1 is an overall perspective view of a shear mechanism of the present invention;
FIG. 2 is a partial perspective view of the shearing mechanism of the present invention;
FIG. 3 is an exploded view of the scissor shaft of the invention;
FIG. 4 is an exploded view of the drive rod of the present invention;
in the figure: 1. a scissor holder; 2. a limit driving plate; 3. a curved slot; 4. a scissor shaft; 5. cutting a plate; 6. a longitudinal bar-shaped groove; 7. a slide block; 8. a guide rod; 9. a threaded rod; 10. an end plate; 11. swing rod; 12. a support base; 13. a clamping plate; 14. a return spring; 15. a notch; 16. a deflector rod; 17. a drive gear; 18. a transmission rod; 19. a first link; 20. a second link; 21. an adjusting sleeve; 22. an arc-shaped groove; 23. a cylindrical shell; 24. and adjusting the screw.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "horizontal," "vertical," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a shearing mechanism of a screw heading cold heading machine comprises a scissor seat 1 fixedly installed with a machine table, wherein the scissor seat 1 is provided with a transversely penetrating installation cavity, a limit driving plate 2 is slidably arranged in the installation cavity, and a curve groove 3 is formed in the upper end face of the limit driving plate 2; the upper end face of the scissor seat 1 is provided with a guide groove which longitudinally penetrates through the scissor seat, a scissor shaft 4 is arranged in the guide groove in a sliding mode, and one end of the scissor shaft 4 is connected with a cutting plate 5; the scissor shaft 4 is provided with a longitudinal strip-shaped groove 6 penetrating up and down, a sliding block 7 is arranged in the longitudinal strip-shaped groove, and the lower end of the sliding block 7 stretches into the curve groove 3; the guide rod 8 is fixedly arranged in the longitudinal strip-shaped groove 6 along the axial direction, the guide hole is axially arranged in the sliding block 7, the guide rod 8 penetrates through the guide hole and is in sliding connection with the sliding block 7, the upper end of the sliding block 7 is provided with a thread groove connected with the guide hole, and the thread groove is connected with the threaded rod 9.
Through setting up spacing drive plate 2 in scissors seat 1 horizontal reciprocating motion, drive slider 7 and scissors axle 4 reciprocating motion through curved slot 3, become longitudinal movement with horizontal motion, realize shearing and transferring the wire, use cam drive scheme for among the prior art, this scheme is under the circumstances of quick batch production, reliability, maneuverability are better, and the precision is higher, and the noise is lower.
Through the longitudinal strip groove 6 that runs through from top to bottom at scissors axle 4, slider 7 can slide at longitudinal strip groove 6 along guide bar 8, through screwing up threaded rod 9, can lock the position of slider 7 to both can fine setting the initial position of scissors axle 4, remain sufficient rigidity again, make the position of moving material, blank more accurate, can not block the material, the reliability is higher.
In some embodiments, the other end of the scissor shaft 4 is connected with an end plate 10, the upper portion of the end plate 10 is rotatably connected with a swing rod 11, the swing rod 11 is connected with a supporting seat 12 fixed with a machine, the end part of the swing rod 11 is rotatably connected with a clamping plate 13, a return spring 14 is connected between the clamping plate 13 and the swing rod 11, the lower end of the clamping plate 13 is abutted to the cutting plate 5, and a wire clamping groove is formed in one side end face, close to the clamping plate 13, of the cutting plate 5. Through setting up splint 13 and cutting board 5 cooperation, make the wire centre gripping that is cut off in the clamp groove, conveniently shift the position, through setting up reset spring 14, make splint 13 have pressure to cutting board 5, guarantee that the centre gripping is stable to after splint 13 is dialled by the driving lever, can self return, be convenient for press from both sides the material next time, realize full automatization material loading.
The lower side of the swing rod 11 is provided with a notch 15; after the deflector rod 16 of the die table tilts the swinging rod 11, the swinging rod 11 drives the clamping plate 13 to be separated from the cutting plate 5, so that the metal wire is separated, the swinging rod 11 drives the scissor shaft 4 to retract, when the deflector rod 16 is positioned in the notch 15, the swinging rod 11 descends, and the clamping plate 13 and the cutting plate 5 clamp the subsequent metal wire.
In some embodiments, the shearing mechanism further comprises a driving gear 17, a transmission rod 18 is rotatably connected to an eccentric position of one side end surface of the driving gear 17, and one end of the transmission rod 18 is rotatably connected to one end of the limit driving plate 2. Thereby converting the rotational driving force of the main shaft into linear motion of the shearing mechanism, and adjusting the feeding amount is facilitated by adjusting the length of the transmission rod 18.
As shown in fig. 4, the transmission rod 18 includes a first connecting rod 19, a second connecting rod 20, a first nut, a second nut, and an adjusting sleeve 21, wherein one end of the first connecting rod 19 is connected with the first nut and the adjusting sleeve 21 through threads, and the first nut is abutted to one end of the adjusting sleeve 21; one end of the second connecting rod 20 is connected with the second nut and the adjusting sleeve 21 through threads, and the second nut is abutted against the other end of the adjusting sleeve 21. The whole length of the transmission rod 18 can be adjusted by adjusting the depth of the first connecting rod 19 and the second connecting rod 20 screwed into the adjusting sleeve 21, and the displacement feeding amount of the cutting plate 5 can be conveniently adjusted by locking by using a nut.
The driving gear 17 comprises a gear plate and an adjusting plate rotationally connected with the gear plate, the adjusting plate is provided with a plurality of arc grooves 22 which are in the same circle, the adjusting plate is connected with a bolt penetrating through the arc grooves, and the bolt is fixed with the gear plate; the outside of the adjusting disk is fixedly connected with a pin shaft, and the transmission rod 18 is rotationally connected with the pin shaft. By rotating the adjusting disc, the bolts are locked, so that the initial position of the cutting plate 5 is convenient to adjust, and the wire clamping groove is aligned with the metal wire.
In some embodiments, the curved slot 3 comprises a first transverse slot and a second transverse slot, the first transverse slot and the second transverse slot are equal in width, parallel and non-collinear, and an arc slot transition connection is arranged between the first transverse slot and the second transverse slot; the lower end of the sliding block 7 is connected with a cylindrical shell 23, and the diameter of the cylindrical shell 23 is the same as the width of the curve groove 3. The cutting plate 5 is transferred to the die position after cutting the wire at the initial position by controlling the movement of the slide 7 in the first and second transverse grooves.
In some embodiments, the scissor seat 1 is connected with an adjusting screw 24 through threads, the adjusting screw 24 is parallel to the scissor shaft 4, and one end of the adjusting screw 24 abuts against the end of the scissor shaft 4. When the position of the sliding block 7 in the longitudinal strip-shaped groove 6 is required to be adjusted, the problem that the movement range is too large and inaccurate can be caused by operating the scissor shaft 4 by hand, and the scissor shaft 4 can conveniently perform micro accurate stroke adjustment by rotating the adjusting screw 24 to feed or retract.
The driving process of the invention is that the main shaft of the device drives the driving gear 17 to rotate, the driving gear 17 drives the transmission rod 18 to eccentrically swing, the transmission rod 18 drives the limit driving plate 2 to transversely reciprocate in the scissor seat 1, the limit driving plate 2 drives the sliding block 7 to longitudinally reciprocate through the curve groove 3, and the sliding block 7 drives the scissor shaft 4 to reciprocate, thereby realizing the shearing and transferring of the metal wire.
The cutting process comprises the steps that after a section of metal wire is cut off by a cutting plate 5 driven by a driving gear 17, the metal wire is clamped in a wire clamping groove by the cutting plate 5 and a clamping plate 13 and is conveyed to a stamping die station for cold heading, in the stamping process, a deflector rod 16 connected with a stamping die table moves to enable a swinging rod 11 to rotate and tilt, the swinging rod 11 drives the clamping plate 13 to separate from the cutting plate 5 to enable the metal wire to be separated, then the swinging rod 11 drives a scissor shaft 4 to retract until a notch 15 is displaced to the position of the deflector rod 16, the deflector rod 16 is staggered with the swinging rod 11, the swinging rod 11 rotates and descends, and the clamping plate 13 and the cutting plate 5 clamp the subsequent metal wire again.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The shearing mechanism of the screw heading cold heading machine is characterized by comprising a scissor seat (1) fixedly installed with a machine table, wherein the scissor seat (1) is provided with a transversely penetrating installation cavity, a limit driving plate (2) is slidably arranged in the installation cavity, and a curve groove (3) is formed in the upper end face of the limit driving plate (2); the upper end face of the scissor seat (1) is provided with a guide groove which longitudinally penetrates through, a scissor shaft (4) is arranged in the guide groove in a sliding mode, and one end of the scissor shaft (4) is connected with a cutting plate (5); the scissors shaft (4) is provided with a longitudinal strip-shaped groove (6) penetrating up and down, a sliding block (7) is arranged in the longitudinal strip-shaped groove, and the lower end of the sliding block (7) stretches into the curve groove (3); the guide rod (8) is fixedly arranged in the longitudinal strip-shaped groove (6) along the axial direction, the guide hole is formed in the sliding block (7) along the axial direction, the guide rod (8) penetrates through the guide hole and is in sliding connection with the sliding block (7), a thread groove connected with the guide hole is formed in the upper end of the sliding block (7), and the thread groove is connected with the threaded rod (9).
2. The shearing mechanism of the screw heading cold heading machine according to claim 1, characterized in that the other end of the scissor shaft (4) is connected with an end plate (10), the upper portion of the end plate (10) is rotationally connected with a swinging rod (11), the swinging rod (11) is connected with a supporting seat (12) fixed with a machine table, the end part of the swinging rod (11) is rotationally connected with a clamping plate (13), a reset spring (14) is connected between the clamping plate (13) and the swinging rod (11), the lower end of the clamping plate (13) is abutted to the cutting plate (5), and a wire clamping groove is formed in the end face of one side of the cutting plate (5) close to the clamping plate (13).
3. The shearing mechanism of the screw heading cold heading machine according to claim 2, characterized in that a notch (15) is arranged on the lower side of the swing rod (11); after a deflector rod (16) of the machine table is tilted up to the swinging rod (11), the swinging rod (11) drives the clamping plate (13) to be separated from the cutting plate (5) so as to separate metal wires, the swinging rod (11) drives the scissor shaft (4) to retract, when the deflector rod (16) is positioned in the notch (15), the swinging rod (11) descends, and the clamping plate (13) and the cutting plate (5) clamp subsequent metal wires.
4. The shearing mechanism of the screw heading cold heading machine according to claim 1 is characterized by comprising a driving gear (17), wherein a transmission rod (18) is rotatably connected to an eccentric part of one side end face of the driving gear (17), and one end of the transmission rod (18) is rotatably connected with one end of the limiting driving plate (2).
5. The shearing mechanism of a screw heading cold heading machine as defined in claim 4, wherein said drive rod (18) comprises a first link (19), a second link (20), a first nut, a second nut and an adjusting sleeve (21), one end of said first link (19) is connected with said first nut and said adjusting sleeve (21) by threads, said first nut is abutted with one end of said adjusting sleeve (21); one end of the second connecting rod (20) is connected with the second nut and the adjusting sleeve (21) through threads, and the second nut is abutted with the other end of the adjusting sleeve (21).
6. The shearing mechanism of a screw heading cold heading machine according to claim 4, characterized in that the driving gear (17) comprises a gear disc and an adjusting disc rotationally connected with the gear disc, the adjusting disc is provided with a plurality of co-round arc-shaped grooves (22), the adjusting disc is connected with bolts penetrating through the arc-shaped grooves, and the bolts are fixed with the gear disc; the outside of the adjusting disk is fixedly connected with a pin shaft, and the transmission rod (18) is rotationally connected with the pin shaft.
7. The shearing mechanism of the screw heading cold heading machine according to claim 1, characterized in that the curved slot (3) comprises a first transverse slot and a second transverse slot, the first transverse slot and the second transverse slot are equal in width, parallel and non-collinear, and an arc slot transition connection is arranged between the first transverse slot and the second transverse slot; the lower end of the sliding block (7) is connected with a cylindrical shell (23), and the diameter of the cylindrical shell (23) is the same as the width of the curve groove (3).
8. The shearing mechanism of the screw heading cold heading machine according to claim 1, characterized in that the scissor seat (1) is connected with an adjusting screw rod (24) through threads, the adjusting screw rod (24) is parallel to the scissor shaft (4), and one end of the adjusting screw rod (24) is abutted with the end part of the scissor shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310498831.5A CN116441459A (en) | 2023-05-05 | 2023-05-05 | Shearing mechanism of screw heading cold heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310498831.5A CN116441459A (en) | 2023-05-05 | 2023-05-05 | Shearing mechanism of screw heading cold heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116441459A true CN116441459A (en) | 2023-07-18 |
Family
ID=87125626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310498831.5A Pending CN116441459A (en) | 2023-05-05 | 2023-05-05 | Shearing mechanism of screw heading cold heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116441459A (en) |
-
2023
- 2023-05-05 CN CN202310498831.5A patent/CN116441459A/en active Pending
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