CN112719651A - Laser cutting equipment convenient for feeding and discharging - Google Patents
Laser cutting equipment convenient for feeding and discharging Download PDFInfo
- Publication number
- CN112719651A CN112719651A CN202110110081.0A CN202110110081A CN112719651A CN 112719651 A CN112719651 A CN 112719651A CN 202110110081 A CN202110110081 A CN 202110110081A CN 112719651 A CN112719651 A CN 112719651A
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- feeding
- discharging
- laser cutting
- drum
- barrel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The invention relates to laser cutting equipment, in particular to laser cutting equipment convenient for feeding and discharging. According to the automatic intermittent steel pipe feeding and discharging device, the feeding mechanism comprising the first rotary drum and the feeding drum, the discharging mechanism comprising the discharging drum and the second rotary drum, the pushing block and the driving assembly are arranged, so that automatic intermittent feeding, cutting and discharging of steel pipes are realized, manual feeding and discharging are replaced, and the overall operation efficiency is improved; through being equipped with first end disc, second end disc, a fixed section of thick bamboo, a sliding barrel, joint post, draw-in groove, connecting rod, rotation seat, screw rod and regulating wheel, realize the regulation of second rotary drum specification, the interval of adjustment first end disc and second end disc realizes the ejection of compact centre gripping of the steel pipe of different cutting length, has better adaptability.
Description
Technical Field
The invention relates to laser cutting equipment, in particular to laser cutting equipment convenient for feeding and discharging.
Background
Laser cutting is to irradiate a workpiece with a focused high-power-density laser beam to quickly melt, vaporize and ablate the irradiated material or reach a burning point, and simultaneously blow off the molten material by means of a high-speed airflow coaxial with the beam, thereby realizing the cutting of the workpiece.
Traditional laser cutting equipment lacks automatic feed equipment and discharging device, need rely on the manual work to go up unloading, influences whole cutting efficiency.
Disclosure of Invention
Based on the defects in the prior art mentioned in the background art, the invention provides the laser cutting equipment convenient for feeding and discharging.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:
the laser cutting equipment convenient for feeding and discharging comprises a cutting table and a laser cutting head arranged on the cutting table, wherein a feeding mechanism is arranged on the front side of the laser cutting head, and a discharging mechanism is arranged on the rear side of the laser cutting head;
the feeding mechanism comprises a feeding hopper and a feeding barrel communicated with the feeding hopper, a rotating first rotating barrel is nested in the feeding barrel, the first rotating barrel comprises a group of end discs and a connecting shaft, the end discs are symmetrically arranged, the connecting shaft is connected with the end discs, and clamping grooves which are circumferentially distributed and used for clamping steel pipes are formed in the end discs; a through groove matched with the clamping groove is formed in the lower part of the feeding cylinder;
the steel pipe cutting machine is characterized in that a pushing assembly for pushing steel pipe feeding is arranged on the cutting table and comprises a pushing block moving transversely, the pushing block and the through groove are arranged oppositely, and the pushing block is connected with a driving assembly for driving the pushing block to move in a reciprocating mode.
The discharging mechanism comprises a discharging barrel fixedly connected with the right end face of the cutting table, and the discharging barrel is provided with rectangular grooves which are arranged oppositely up and down; a second rotary drum is nested in the discharge drum, and the second rotary drum is provided with a clamping groove for clamping a steel pipe; and a blanking box is arranged at the lower part of the discharging barrel.
As a further scheme of the invention: first pivot with the feed cylinder rotates to be connected, first pivot extends the feed cylinder outside and fixedly connected with worm wheel, the worm wheel meshing has the worm, the worm has first servo motor's output shaft through the coupling joint, first servo motor pass through bolt fastening's mode with feed cylinder outer wall fixed connection.
As a further scheme of the invention: the feeding cylinder is a hollow cylinder which is horizontally arranged, the upper end of the feeding cylinder is communicated with the feeding hopper, the lower end of the feeding cylinder is fixedly connected with the cutting table, and the feeding cylinder is provided with a through groove for the pushing block to pass through.
As a further scheme of the invention: the driving assembly comprises a moving block fixedly connected with the pushing block, the moving block is connected with a chute plate in a sliding mode, a lead screw penetrating through the moving block and connected with the moving block in a threaded mode is arranged in the chute plate, and the lead screw extends to the outer side of the chute plate and is connected with a second servo motor through a coupler.
As a further scheme of the invention: the sliding groove plate is provided with a transverse sliding groove for the moving block to slide, and the cutting table is provided with a transverse through groove for the pushing block to slide; the screw rod is nested in the sliding groove plate, and the sliding groove plate is fixedly connected with the inner wall of the cutting table.
As a further scheme of the invention: the second rotary drum is rotatably connected with the discharge drum through a second rotary shaft, the second rotary shaft is connected with an output shaft of a third servo motor through a transmission belt, and the third servo motor is fixedly connected with a base through a bolt fixing mode.
As a further scheme of the invention: the second rotary drum comprises a first end disc and a second end disc which are symmetrically arranged, the first end disc is fixedly connected with a fixed drum, the second end disc is fixedly connected with a sliding drum, and the sliding drum is nested in the fixed drum and is in sliding connection with the fixed drum; the sliding cylinder is nested with a group of symmetrically arranged clamping columns, and the inner wall of the fixed cylinder is provided with clamping grooves matched with the clamping columns; the inboard connecting rod that articulates of joint post, the connecting rod articulates there is the rotation seat, rotate seat fixedly connected with screw rod, the screw rod extends to the second end disc outside and fixedly connected with regulating wheel, the screw rod runs through the second end disc and with second end disc threaded connection.
As a further scheme of the invention: the clamping column penetrates through the side wall of the sliding barrel and is in sliding connection with the side wall of the sliding barrel, and a spring is arranged between the clamping column and the sliding barrel.
After adopting the structure, compared with the prior art, the invention has the following advantages:
according to the invention, the feeding mechanism comprising the first rotary drum and the feeding drum, the discharging mechanism comprising the discharging drum and the second rotary drum, the pushing block and the driving assembly are arranged, so that automatic intermittent feeding, cutting and discharging of steel pipes are realized, manual feeding and discharging are replaced, and the overall operation efficiency is improved.
The steel pipe feeding device is provided with the first rotary drum and the feeding drum which comprise the end discs and the connecting shafts which are symmetrically arranged, so that the steel pipes are rotationally fed, the intermittent feeding of the steel pipes is facilitated, and meanwhile, the steel pipes are conveniently matched with the pushing block, and the pushing feeding and cutting of the steel pipes are realized.
According to the invention, the first end disc, the second end disc, the fixed cylinder, the sliding cylinder, the clamping column, the clamping groove, the connecting rod, the rotating seat, the screw and the adjusting wheel are arranged, so that the specification of the second rotating cylinder is adjusted, the distance between the first end disc and the second end disc is adjusted, the discharge clamping of steel pipes with different cutting lengths is realized, and the steel pipe clamping device has better adaptability.
Drawings
Fig. 1 is a schematic diagram of the internal structure of a laser cutting device facilitating feeding and discharging.
Fig. 2 is a schematic side view of a feeding hopper and a feeding barrel in the laser cutting equipment for facilitating feeding and discharging.
Fig. 3 is a schematic perspective view of a feeding cylinder in the laser cutting device for facilitating feeding and discharging.
Fig. 4 is a schematic perspective view of a first drum of a laser cutting apparatus for facilitating feeding and discharging.
Fig. 5 is a schematic diagram of the internal structures of a discharge drum and a second drum in the laser cutting equipment for facilitating feeding and discharging.
Fig. 6 is an enlarged view of a portion a in fig. 5.
Fig. 7 is a schematic view of a three-dimensional structure of a discharge barrel in the laser cutting equipment convenient for feeding and discharging.
In the figure: 1-a cutting table; 2-laser cutting head; 3-feeding hopper; 4-a feeding cylinder; 401-through slots; 5-end disc; 501-clamping groove; 6-connecting shaft; 7-a first rotating shaft; 8-a worm gear; 9-a worm; 10-a first servo motor; 11-a steel pipe; 12-a pushing block; 13-a moving block; 14-a chute plate; 15-a screw rod; 16-a second servo motor; 17-a discharge barrel; 1701-rectangular groove; 18-a second drum; 19-a transmission belt; 20-a third servo motor; 21-blanking box; 22-a first end disc; 23-a stationary cylinder; 2301-a clamping groove; 24-a second shaft; 25-a sliding cylinder; 26-a second end disc; 27-a clamping column; 28-connecting rod; 29-a rotating seat; 30-screw rod; 31-adjusting wheel.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 to 7, in an embodiment of the invention, a laser cutting apparatus convenient for feeding and discharging includes a cutting table 1 and a laser cutting head 2 arranged on the cutting table 1, wherein a feeding mechanism is arranged on the front side of the laser cutting head 2, and a discharging mechanism is arranged on the rear side of the laser cutting head 2;
the feeding mechanism comprises a feeding hopper 3 and a feeding barrel 4 communicated with the feeding hopper 3, a rotating first rotary barrel is nested in the feeding barrel 4, the first rotary barrel comprises a group of end discs 5 and a connecting shaft 6 connected with the end discs 5, the end discs 5 are circumferentially distributed and provided with clamping grooves 501 for clamping the steel pipes 11; a through groove 401 matched with the clamping groove 501 is formed in the lower portion of the feeding cylinder 4;
the cutting table 1 is provided with a pushing assembly for pushing the steel pipe 11 to feed, the pushing assembly comprises a pushing block 12 moving transversely, the pushing block 12 and the through groove 401 are arranged oppositely, and the pushing block 12 is connected with a driving assembly for driving the pushing block 12 to move in a reciprocating manner.
The discharging mechanism comprises a discharging barrel 17 fixedly connected with the right end face of the cutting table 1, and the discharging barrel 17 is provided with rectangular grooves 1701 which are arranged oppositely up and down; a second rotating drum 18 is nested in the discharging drum 17, and the second rotating drum 18 is provided with a clamping groove 501 for clamping the steel pipe 11; and a blanking box 21 is arranged at the lower part of the discharging barrel 17.
Specifically, a steel pipe 11 to be cut is placed in the feeding hopper 3, the steel pipe 11 enters the feeding barrel 4 from the feeding hopper 3, the first rotary barrel rotates to enable the steel pipe 11 to fall into the clamping groove 501 of the end disc 5, the first rotary barrel is matched with the inner wall of the feeding barrel 4 along with the rotation of the first rotary barrel, so that the steel pipe 11 rotates to the through groove 401 at the lower part of the feeding barrel 4 one by one, then the driving assembly drives the pushing block 12 to push the steel pipe 11 to move transversely and move to the lower part of the laser cutting head 2 to cut, after the cutting is completed, the pushing block 12 continues to push the steel pipe 11, so that the cut steel pipe 11 is pushed to the discharging barrel 17 and enters the discharging barrel 17 through the rectangular groove 1701, and then the cut steel pipe 11 is rotated to the lower part of the discharging barrel 17 by the rotating second rotary barrel 18 and falls into the blanking box 21; realize progressively feeding, cutting and the ejection of compact of steel pipe, need not artificial intervention, improved the operating efficiency.
In this embodiment, first pivot 7 through first pivot with feed cylinder 4 rotates and connects, first pivot 7 extends the 4 outsides of feed cylinder and fixedly connected with worm wheel 8, worm wheel 8 meshes has worm 9, worm 9 has the output shaft of first servo motor 10 through the coupling joint, first servo motor 10 through bolt fastening's mode with feed cylinder 4 outer wall fixed connection.
Specifically, first servo motor 10 drive worm 9 rotates, worm 9 passes through worm wheel 8 drives first pivot 7 rotates, first pivot 7 drives first pivot is at the rotation of feed cylinder 4, realizes steel pipe 11's intermittent type feeding, guarantees the orderly feeding of steel pipe.
In this embodiment, the feeding cylinder 4 is a hollow cylinder horizontally arranged, the upper end of the feeding cylinder 4 is communicated with the feeding hopper 3, the lower end of the feeding cylinder 4 is fixedly connected with the cutting table 1, and the feeding cylinder 4 is provided with a through groove 401 for the pushing block 12 to pass through.
In this embodiment, the driving assembly includes a moving block 13 fixedly connected to the pushing block 12, the moving block 13 is slidably connected to a chute plate 14, a lead screw 15 penetrating through the moving block 13 and threadedly connected to the moving block 13 is disposed in the chute plate 14, and the lead screw 15 extends to the outer side of the chute plate 14 and is connected to a second servo motor 16 through a coupling.
In this embodiment, the sliding chute plate 14 is provided with a transverse sliding chute for the moving block 13 to slide, and the cutting table 1 is provided with a transverse through chute for the pushing block 12 to slide; the screw mandrel 14 is nested in the sliding chute plate 14, and the sliding chute plate 14 is fixedly connected with the inner wall of the cutting table 1.
Specifically, the second servo motor 16 drives the lead screw 15 to rotate, the lead screw 15 drives the moving block 13 to move in the sliding chute plate 14, the moving block 13 drives the pushing block 12 to move transversely, the pushing block 12 penetrates through the through groove 401 to push the steel pipe 11 to move transversely, feeding of the steel pipe 11 is achieved, the steel pipe 11 is made to move to the position below the laser cutting head 2, and the second servo motor 16 controls the feeding length of the steel pipe 11, so that the cutting length is controlled.
In this embodiment, the second rotating drum 18 is rotatably connected to the discharging drum 17 through a second rotating shaft 24, the second rotating shaft 24 is connected to an output shaft of a third servo motor 20 through a transmission belt 19, and the third servo motor 20 is fixedly connected to a base through a bolt fixing manner.
In another embodiment of the present invention, the second rotary drum 18 comprises a first end disc 22 and a second end disc 26 which are symmetrically arranged, the first end disc 22 is fixedly connected with a fixed drum 23, the second end disc 26 is fixedly connected with a sliding drum 25, and the sliding drum 25 is nested in the fixed drum 23 and is slidably connected with the fixed drum 23; a group of symmetrically arranged clamping columns 27 is nested in the sliding cylinder 25, and clamping grooves 2301 matched with the clamping columns 27 are formed in the inner wall of the fixed cylinder 23; the inboard articulated connecting rod 28 that has of joint post 27, connecting rod 28 articulates there is rotation seat 29, it has screw rod 30 to rotate seat 29 fixedly connected with, screw rod 30 extends to the second end disc 26 outside and fixedly connected with regulating wheel 31, screw rod 30 runs through second end disc 26 and with second end disc 26 threaded connection.
Specifically, through revolving wrong regulating wheel 31, regulating wheel 31 drives screw rod 30 rotates, screw rod 30 to second end dish 26 outside rotating, screw rod 30 drives through rotating seat 29 connecting rod 28 moves to the outside, connecting rod 28 drives joint post 27 breaks away from in draw-in groove 2301, and then can conveniently remove sliding tube 25, and then adjusts the distance between first end dish 22 and the second end dish 26, adapts to the unloading of the steel pipe 11 of different cutting lengths, has better adaptability.
In this embodiment, the clamping column 27 penetrates through the side wall of the sliding barrel 25 and is slidably connected with the side wall of the sliding barrel 25, and a spring is arranged between the clamping column 27 and the sliding barrel 25.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Claims (9)
1. The laser cutting equipment convenient for feeding and discharging is characterized by comprising a cutting table (1) and a laser cutting head (2) arranged on the cutting table (1), wherein a feeding mechanism is arranged on the front side of the laser cutting head (2), and a discharging mechanism is arranged on the rear side of the laser cutting head (2);
the feeding mechanism comprises a feeding hopper (3) and a feeding barrel (4) communicated with the feeding hopper (3), a rotating first rotary barrel is nested in the feeding barrel (4), the first rotary barrel comprises a group of end discs (5) which are symmetrically arranged and a connecting shaft (6) connected with the end discs (5), and clamping grooves (501) which are circumferentially distributed and used for clamping steel pipes (11) are formed in the end discs (5); a through groove (401) matched with the clamping groove (501) is formed in the lower portion of the feeding barrel (4);
the steel pipe cutting machine is characterized in that a pushing assembly for pushing feeding of a steel pipe (11) is arranged on the cutting table (1), the pushing assembly comprises a pushing block (12) moving transversely, the pushing block (12) and the through groove (401) are arranged oppositely, and the pushing block (12) is connected with a driving assembly for driving the pushing block (12) to move in a reciprocating mode.
2. The discharging mechanism comprises a discharging barrel (17) fixedly connected with the right end face of the cutting table (1), and the discharging barrel (17) is provided with rectangular grooves (1701) which are arranged oppositely up and down; a second rotary drum (18) is nested in the discharge drum (17), and the second rotary drum (18) is provided with a clamping groove (501) for clamping the steel pipe (11); a blanking box (21) is arranged at the lower part of the discharging barrel (17).
3. The laser cutting equipment convenient for feeding and discharging is characterized in that the first rotary shaft is rotatably connected with the feeding cylinder (4) through a first rotary shaft (7), the first rotary shaft (7) extends out of the feeding cylinder (4) and is fixedly connected with a worm wheel (8), the worm wheel (8) is meshed with a worm (9), the worm (9) is connected with an output shaft of a first servo motor (10) through a coupling, and the first servo motor (10) is fixedly connected with the outer wall of the feeding cylinder (4) in a bolt fixing mode.
4. The laser cutting equipment convenient for feeding and discharging is characterized in that the feeding cylinder (4) is a hollow cylinder which is horizontally arranged, the upper end of the feeding cylinder (4) is communicated with the feeding hopper (3), the lower end of the feeding cylinder (4) is fixedly connected with the cutting table (1), and the feeding cylinder (4) is provided with a through groove (401) for the pushing block (12) to pass through.
5. The laser cutting device convenient for feeding and discharging of materials as claimed in claim 1, wherein the driving assembly comprises a moving block (13) fixedly connected with the pushing block (12), the moving block (13) is slidably connected with a chute plate (14), a lead screw (15) penetrating through the moving block (13) and in threaded connection with the moving block (13) is arranged in the chute plate (14), and the lead screw (15) extends to the outer side of the chute plate (14) and is connected with a second servo motor (16) through a coupling.
6. The laser cutting device convenient for feeding and discharging materials as claimed in claim 1, characterized in that the chute plate (14) is provided with a transverse chute for sliding the moving block (13), the cutting table (1) is provided with a transverse through slot for sliding the pushing block (12); the screw rod (14) is nested in the sliding groove plate (14), and the sliding groove plate (14) is fixedly connected with the inner wall of the cutting table (1).
7. The laser cutting equipment convenient for feeding and discharging materials as claimed in claim 1, wherein the second rotary drum (18) is rotatably connected with the discharging drum (17) through a second rotary shaft (24), the second rotary shaft (24) is connected with an output shaft of a third servo motor (20) through a transmission belt (19), and the third servo motor (20) is fixedly connected with a base in a bolt fixing mode.
8. The laser cutting equipment for facilitating feeding and discharging of materials according to claim 6, wherein the second rotary drum (18) comprises a first end disc (22) and a second end disc (26) which are symmetrically arranged, the first end disc (22) is fixedly connected with a fixed drum (23), the second end disc (26) is fixedly connected with a sliding drum (25), and the sliding drum (25) is nested in the fixed drum (23) and is slidably connected with the fixed drum (23); the sliding cylinder (25) is nested with a group of symmetrically arranged clamping columns (27), and the inner wall of the fixed cylinder (23) is provided with clamping grooves (2301) matched with the clamping columns (27); joint post (27) inboard articulates there is connecting rod (28), connecting rod (28) articulate has and rotates seat (29), rotate seat (29) fixedly connected with screw rod (30), screw rod (30) extend to second end disc (26) outside and fixedly connected with regulating wheel (31), screw rod (30) run through second end disc (26) and with second end disc (26) threaded connection.
9. The laser cutting device convenient for feeding and discharging of materials as claimed in claim 7, wherein the clamping column (27) penetrates through the side wall of the sliding barrel (25) and is connected with the side wall of the sliding barrel (25) in a sliding manner, and a spring is arranged between the clamping column (27) and the sliding barrel (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110110081.0A CN112719651A (en) | 2021-01-27 | 2021-01-27 | Laser cutting equipment convenient for feeding and discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110110081.0A CN112719651A (en) | 2021-01-27 | 2021-01-27 | Laser cutting equipment convenient for feeding and discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112719651A true CN112719651A (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110110081.0A Withdrawn CN112719651A (en) | 2021-01-27 | 2021-01-27 | Laser cutting equipment convenient for feeding and discharging |
Country Status (1)
| Country | Link |
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| CN (1) | CN112719651A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478114A (en) * | 2021-07-02 | 2021-10-08 | 江苏诚安检验检测有限公司 | Steel pipe welding seam ultrasonic detector capable of automatically feeding and discharging |
| CN114985888A (en) * | 2022-08-03 | 2022-09-02 | 沛县环宇矿山机械配件有限公司 | Part welding equipment for mining machinery |
| CN116237648A (en) * | 2023-02-15 | 2023-06-09 | 重庆点金自动化设备有限公司 | Laser cutting machine with automatic material taking function |
| CN117548812A (en) * | 2024-01-11 | 2024-02-13 | 济南京华金属制品有限公司 | Steel pipe cutting device for scaffold production and application method thereof |
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| CN113478114A (en) * | 2021-07-02 | 2021-10-08 | 江苏诚安检验检测有限公司 | Steel pipe welding seam ultrasonic detector capable of automatically feeding and discharging |
| CN114985888A (en) * | 2022-08-03 | 2022-09-02 | 沛县环宇矿山机械配件有限公司 | Part welding equipment for mining machinery |
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| CN117548812A (en) * | 2024-01-11 | 2024-02-13 | 济南京华金属制品有限公司 | Steel pipe cutting device for scaffold production and application method thereof |
| CN117548812B (en) * | 2024-01-11 | 2024-03-22 | 济南京华金属制品有限公司 | Steel pipe cutting device for scaffold production and application method thereof |
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Application publication date: 20210430 |