CN112975157A - Automatic laser cutting device for sheet metal parts - Google Patents

Automatic laser cutting device for sheet metal parts Download PDF

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Publication number
CN112975157A
CN112975157A CN202110237443.2A CN202110237443A CN112975157A CN 112975157 A CN112975157 A CN 112975157A CN 202110237443 A CN202110237443 A CN 202110237443A CN 112975157 A CN112975157 A CN 112975157A
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CN
China
Prior art keywords
assembly
laser cutting
sheet metal
cutting device
metal parts
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Granted
Application number
CN202110237443.2A
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Chinese (zh)
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CN112975157B (en
Inventor
刘运辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ganzhou Hengbang Metal Product Co ltd
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Ganzhou Hengbang Metal Product Co ltd
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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
    • B23K26/36—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
    • 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
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B23K26/703—Cooling arrangements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention relates to a cutting device, in particular to an automatic laser cutting device for sheet metal parts. The invention aims to solve the technical problem of providing an automatic laser cutting device which can automatically cut a metal plate, is time-saving, labor-saving and efficient and is used for a sheet metal part. In order to solve the technical problem, the invention provides an automatic laser cutting device for sheet metal parts, which comprises: the workbench is connected with a material placing plate; the sliding frame is connected to the material placing plate; a slide bar connected to the carriage; the cutting assembly is connected to the sliding rod; and the feeding assembly is connected on the workbench in a sliding manner. According to the cutting device, the metal plate is conveyed and cut through the cutting assembly and the feeding assembly, and the metal plate is cut through the transmission assembly without manually pushing the feeding plate to move rightwards, so that labor is saved, and the working efficiency is improved.

Description

Automatic laser cutting device for sheet metal parts
Technical Field
The invention relates to a cutting device, in particular to an automatic laser cutting device for sheet metal parts.
Background
The sheet metal, a processing technology, the sheet metal has not had a more complete definition so far, according to a definition on a certain professional journal abroad, can define it as: the sheet metal is a comprehensive cold processing technology for sheet metal, and comprises shearing, folding, riveting, splicing, forming and the like.
At present people carry out laser cutting to the beating panel beating and will beat the panel beating usually the manual work and place on the plane, then fix the laser sword on the slide through the manual work, then slide through straight slide bar and cut the beating panel beating, the cutting needs the manual work to remove the slide all the time and drive the laser sword and cut the beating panel beating, wastes time and energy and inefficiency.
Therefore, there is a need to develop an automatic laser cutting device for sheet metal parts, which can automatically cut a metal plate, and is time-saving, labor-saving and efficient.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects that time and labor are wasted and efficiency is low because a sliding plate needs to be moved left and right to drive a laser knife to cut a Bo-Shi sheet metal all the time by manpower, and the technical problem to be solved is to provide an automatic laser cutting device for a sheet metal part, which can automatically cut the Bo-Shi sheet metal part, saves time and labor and has high efficiency.
(2) Technical scheme
In order to solve the technical problem, the invention provides an automatic laser cutting device for sheet metal parts, which comprises: the workbench is connected with a material placing plate; the sliding frame is connected to the material placing plate; a slide bar connected to the carriage; the cutting assembly is connected to the sliding rod; and the feeding assembly is connected on the workbench in a sliding manner.
Preferably, the cutting assembly comprises: the motor is arranged on the material placing plate; the twist shaft is rotatably connected to the sliding rod and is in transmission connection with the motor; the sliding block is connected to the twist shaft in a threaded manner and is connected with the sliding rod in a sliding manner; and the laser cutting knife is arranged on the sliding block.
Preferably, the feed assembly comprises: a feeding plate which is connected on the workbench in a sliding way; the first compression spring is connected between the feeding plate and the workbench; the first stop block is rotatably connected to the feeding plate; a first torsion spring connected between the first stopper and the feed plate; the first roller is rotatably connected to the first stop block; a second stop block which is rotatably connected to the workbench; and the second torsion spring is connected between the second stop block and the workbench.
Preferably, the device further comprises a transmission assembly, wherein the transmission assembly comprises: an L-shaped rotating shaft which is rotatably connected to the sliding frame; the gear is connected to the L-shaped rotating shaft; the rack is connected to the feeding plate and meshed with the gear; and the collision rod is connected to the sliding block and matched with the L-shaped rotating shaft.
Preferably, a cooling assembly is further included, the cooling assembly comprising: the water storage tank is arranged on the material placing plate; the water outlet pipe is connected to the water storage tank; and the spray head is arranged at the outlet of the water outlet pipe, is connected with the sliding block and is matched with the laser cutting knife.
Preferably, still include the unloading subassembly, the unloading subassembly includes: the blanking frame is connected to the workbench; the special-shaped rod is rotatably connected to the blanking frame; a second roller rotatably connected to the special-shaped rod; and a spiral spring connected between the second roller and the profiled bar.
Preferably, still include the receipts material subassembly, receive the material subassembly and include: a pull frame slidably connected to the carriage; a connecting rod connected to the pull frame; a support plate which is connected to the connecting rod in a sliding way; the second compression spring is sleeved between the supporting plate and the pulling frame.
Preferably, the lower part of the blanking frame is arranged in an inclined plane.
(3) Advantageous effects
1. Thereby carry out transportation cutting to beating the panel beating through cutting assembly and pay-off subassembly.
2. Thereby through transmission assembly need not artifical promotion feed plate to move right and cut the panel beating, use manpower sparingly and improved work efficiency.
3. Thereby cool off laser cutting knife and play the panel beating in the course of working through cooling assembly, improved work efficiency.
4. Thereby do not need artifical manual will beat the panel beating to place one by one on the delivery sheet through the unloading subassembly, further use manpower sparingly.
5. Thereby convenient manual work is collected the play panel beating on the layer board through receiving the material subassembly.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the cutting assembly of the present invention.
Fig. 3 is a schematic perspective view of the feeding assembly of the present invention.
Fig. 4 is an enlarged view of a portion a of the present invention.
FIG. 5 is a schematic perspective view of the driving assembly, the cooling assembly and the receiving assembly of the present invention.
Fig. 6 is a schematic perspective view of the blanking assembly of the present invention.
The labels in the figures are: 1-workbench, 2-material placing plate, 3-sliding frame, 4-sliding rod, 5-cutting component, 51-motor, 52-twist shaft, 53-sliding block, 54-laser cutting knife, 6-feeding component, 61-feeding plate, 62-first compression spring, 63-first block, 64-first torsion spring, 65-first roller, 66-second block, 67-second torsion spring, 7-transmission component, 71-L-shaped rotating shaft, 72-gear, 73-rack, 74-collision rod, 8-cooling component, 81-water storage tank, 82-water outlet pipe, 83-spray head, 9-blanking component, 91-blanking frame, 92-special-shaped rod, 93-second roller and 94-spiral spring, 10-a material receiving assembly, 101-a pulling frame, 102-a connecting rod, 103-a supporting plate and 104-a second compression spring.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
An automatic laser cutting device for sheet metal parts is shown in figures 1-4 and comprises a workbench 1, a material placing plate 2, a sliding frame 3, a sliding rod 4, a cutting assembly 5 and a feeding assembly 6, wherein the right side of the lower portion of the workbench 1 is connected with the material placing plate 2, the right side of the material placing plate 2 is connected with the sliding frame 3, the sliding rod 4 is connected between the front side and the rear side of the sliding frame 3, the upper portion of the sliding rod 4 is connected with the cutting assembly 5, and the upper portion of the workbench 1 is connected with the feeding assembly 6 in a sliding manner.
Cutting assembly 5 is including motor 51, fried dough twist axle 52, slider 53 and laser cutting sword 54, puts flitch 2 top front side and installs motor 51, and the rotary type is connected with fried dough twist axle 52 between the both sides around slide bar 4 upper portion, and fried dough twist axle 52 is connected with the motor 51 transmission, and the screw thread formula of fried dough twist axle 52 rear side is connected with slider 53, and slider 53 and slide bar 4 sliding connection, laser cutting sword 54 is installed on slider 53 upper portion.
Feeding assembly 6 is including feed plate 61, first compression spring 62, first dog 63, first torsion spring 64, first gyro wheel 65, second dog 66 and second torsion spring 67, 1 upper portion slidingtype of workstation is connected with feed plate 61, be connected with first compression spring 62 between feed plate 61 and the workstation 1, the equal rotary type in both sides is connected with a plurality of first dogs 63 around feed plate 61, be connected with first torsion spring 64 between the first dog 63 of both sides and the feed plate 61, the equal rotary type in first dog 63 upper portion of both sides is connected with first gyro wheel 65, the equal rotary type in both sides is connected with a plurality of second dogs 66 around the workstation 1 upper portion, be connected with second torsion spring 67 between the second dog 66 of both sides and the workstation 1.
When laser cutting is needed to be carried out on the metal bobble-sheet, the equipment can be used, firstly, the metal bobble-sheet is manually put in from the left side of the feeding plate 61, the metal bobble-sheet moves rightwards to drive the second stop block 66 to rotate, the second stop block 66 rotates to be compressed, when the metal bobble-sheet is not contacted with the second stop block 66, the second stop block 66 resets under the action of the compressed second torque spring 67, so that the metal bobble-sheet is positioned between the first stop blocks 63 at the two sides, then the feeding plate 61 is manually pushed to move rightwards to drive the first stop blocks 63 at the two sides to move rightwards, the feeding plate 61 moves rightwards to drive the first compression spring 62 to be compressed, the first stop blocks 63 at the two sides move rightwards to drive the metal bobble-sheet to move rightwards, then, the feeding plate 61 is manually loosened, the feeding plate 61 resets under the action of the first compression spring 62, second dog 66 under the play panel beating rotates under the play panel beating gravity, second dog 66 rotates first torsion spring 64 and is compressed, second dog 66 resets under the first torsion spring 64 effect of compressed when the play panel beating is not rather than the contact, it is so repeated, when the play panel beating transports under laser cutting knife 54, rotate through artifical starter motor 51 and drive the rotation of twist axle 52, twist axle 52 rotates and drives slider 53 forward motion, slider 53 forward motion drives laser cutting knife 54 forward motion, thereby carry out laser cutting to the play panel beating.
Example 2
On the basis of embodiment 1, as shown in fig. 5, the device further includes a transmission assembly 7, the transmission assembly 7 includes an L-shaped rotating shaft 71, a gear 72, a rack 73 and a plunger 74, the L-shaped rotating shaft 71 is rotatably connected to both front and rear sides of the upper portion of the carriage 3, the gear 72 is connected to the lower portion of the L-shaped rotating shaft 71, the rack 73 is connected to both front and rear sides of the right portion of the feeding plate 61, the rack 73 on both sides is engaged with the gear 72 on both sides, the plunger 74 is connected to the left side of the lower portion of the slider 53, and the plunger 74 is engaged with the L-shaped rotating.
When the slider 53 moves back and forth and contacts with the L-shaped rotating shafts 71 on the two sides, the slider 53 moves back and forth to drive the L-shaped rotating shafts 71 on the two sides to rotate, the L-shaped rotating shafts 71 on the two sides rotate to drive the racks 73 on the two sides to move rightwards, the racks 73 on the two sides move rightwards to drive the feeding plate 61 to move rightwards, so that the feeding plate 61 does not need to be manually pushed to move rightwards to cut metal plates, labor is saved, the working efficiency is improved, and when the slider 53 does not contact with the L-shaped rotating shafts 71 on the two sides, the feeding plate 61 resets through the first compression.
Example 3
On the basis of the embodiment 2, as shown in fig. 5, the laser cutting device further comprises a cooling assembly 8, wherein the cooling assembly 8 comprises a water storage tank 81, a water outlet pipe 82 and a spray head 83, the water storage tank 81 is arranged in the middle of the top of the material placing plate 2, the water outlet pipe 82 is connected to the rear side of the upper portion of the water storage tank 81, the spray head 83 is arranged at the outlet of the water outlet pipe 82, the spray head 83 is connected with the sliding block 53, and the spray head 83 is matched.
When the laser cutting knife 54 cuts the metal plate, the water storage tank 81 is manually started to spray water through the water outlet pipe 82, so that the laser cutting knife 54 and the metal plate in the machining process are cooled, and the working efficiency is improved.
Example 4
On the basis of embodiment 3, as shown in fig. 6, the blanking device further includes a blanking assembly 9, the blanking assembly 9 includes a blanking frame 91, a special-shaped rod 92, a second roller 93 and a volute spring 94, the blanking frame 91 is connected to the left side of the upper portion of the workbench 1, the special-shaped rod 92 is rotatably connected to the front side and the rear side of the blanking frame 91, the second roller 93 is rotatably connected to the inner sides of the special-shaped rods 92 at the two sides, and the volute spring 94 is connected between the second roller 93 at the two sides and the special-shaped rods 92 at the two sides.
When the need carries out laser cutting to the Bo panel beating, at first the manual work is placed a large amount of Bo panel beating in blanking frame 91, the Bo panel beating passes through blanking frame 91 inclined plane landing right, when the second gyro wheel 93 contact of Bo panel beating landing right with both sides, the Bo panel beating landing right drives the second gyro wheel 93 rotation of both sides, the second gyro wheel 93 of both sides rotates the volute spiral spring 94 of both sides and is compressed, when the Bo panel beating not with the second gyro wheel 93 contact of both sides, the second gyro wheel 93 of both sides resets under the volute spiral spring 94 effect of compressed, thereby do not need artifical manual will be played the Bo panel beating and place on feed plate 61 one by one, further use manpower sparingly.
On the basis of embodiment 3, as shown in fig. 5, the collecting device further includes a collecting component 10, the collecting component 10 includes a pull frame 101, a connecting rod 102, a supporting plate 103 and a second compression spring 104, the bottom of the inner side of the carriage 3 is slidably connected with the pull frame 101, the front side and the rear side of the right portion of the pull frame 101 are both connected with the connecting rod 102, the supporting plate 103 is slidably connected between the upper portions of the connecting rods 102 at the two sides, and the second compression spring 104 is sleeved between the supporting plate 103 and the pull frame 101.
When the cutting of the beating sheet metal is accomplished, move right through feed plate 61 and drive the beating sheet metal and move right, make the beating sheet metal that the cutting was accomplished drop on layer board 103, layer board 103 downstream under the effect of beating sheet metal gravity, layer board 103 downstream second compression spring 104 is compressed, after the whole cutting of beating sheet metal is accomplished, thereby draw frame 101 through artifical pulling and move right and make things convenient for the manual work to collect the beating sheet metal on layer board 103.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the invention, and all such changes, modifications and substitutions fall within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. An automated laser cutting device for sheet metal parts, comprising:
the workbench (1) is connected with a material placing plate (2);
a sliding frame (3) connected to the material placing plate (2);
a slide bar (4) connected to the carriage (3);
a cutting assembly (5) connected to the slide bar (4);
a feeding assembly (6) which is connected on the workbench (1) in a sliding way.
2. An automated laser cutting device for sheet metal parts according to claim 1, characterized in that the cutting assembly (5) comprises:
a motor (51) mounted on the material placing plate (2);
the twist shaft (52) is rotatably connected to the sliding rod (4), and the twist shaft (52) is in transmission connection with the motor (51);
a slide block (53) which is connected to the twist shaft (52) in a threaded manner, the slide block (53) being connected with the slide rod (4) in a sliding manner;
and a laser cutting knife (54) mounted on the slider (53).
3. An automated laser cutting device for sheet metal parts according to claim 2, characterized in that the feed assembly (6) comprises:
a feeding plate (61) which is connected to the workbench (1) in a sliding manner;
a first compression spring (62) connected between the feeding plate (61) and the table (1);
a first stopper 63 rotatably connected to the feeding plate 61;
a first torsion spring (64) connected between the first stopper (63) and the feed plate (61);
a first roller (65) rotatably connected to the first stopper (63);
a second stop block (66) which is rotatably connected to the workbench (1);
a second torsion spring (67) connected between the second stopper (66) and the table (1).
4. An automated laser cutting device for sheet metal parts according to claim 3, characterized in that it further comprises a transmission assembly (7), the transmission assembly (7) comprising:
an L-shaped rotating shaft (71) which is rotatably connected to the carriage (3);
a gear (72) connected to the L-shaped rotating shaft (71);
a rack (73) connected to the feeding plate (61), the rack (73) being engaged with the gear (72);
and the striker (74) is connected to the slider (53), and the striker (74) is matched with the L-shaped rotating shaft (71).
5. An automated laser cutting device for sheet metal parts according to claim 4, characterized in that it further comprises a cooling assembly (8), the cooling assembly (8) comprising:
a water storage tank (81) arranged on the material placing plate (2);
a water outlet pipe (82) connected to the water storage tank (81);
and the spray head (83) is arranged at the outlet of the water outlet pipe (82), the spray head (83) is connected with the sliding block (53), and the spray head (83) is matched with the laser cutting knife (54).
6. The automatic laser cutting device for sheet metal parts according to claim 5, characterized in that it further comprises a blanking assembly (9), the blanking assembly (9) comprising:
a blanking frame (91) connected to the table (1);
a special-shaped rod (92) which is rotatably connected to the blanking frame (91);
a second roller (93) rotatably connected to the shaped bar (92);
and a spiral spring (94) connected between the second roller (93) and the shaped rod (92).
7. The automatic laser cutting device for sheet metal parts according to claim 6, further comprising a material receiving assembly (10), wherein the material receiving assembly (10) comprises:
a pull frame (101) slidably connected to the carriage (3);
a link (102) connected to the pull frame (101);
a pallet (103) slidably connected to the link (102);
a second compression spring (104) sleeved between the supporting plate (103) and the pulling frame (101).
8. The automatic laser cutting device for sheet metal parts according to claim 7, characterized in that the lower part of the blanking frame (91) is inclined.
CN202110237443.2A 2021-03-04 2021-03-04 Automatic laser cutting device for sheet metal parts Active CN112975157B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110237443.2A CN112975157B (en) 2021-03-04 2021-03-04 Automatic laser cutting device for sheet metal parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110237443.2A CN112975157B (en) 2021-03-04 2021-03-04 Automatic laser cutting device for sheet metal parts

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CN112975157A true CN112975157A (en) 2021-06-18
CN112975157B CN112975157B (en) 2023-02-24

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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885086A (en) * 2010-06-04 2010-11-17 王金波 Pipe cutting machine tool capable of feeding and spacing automatically
CN205702863U (en) * 2016-05-03 2016-11-23 盐城雄伟汽车部件有限公司 A kind of fixed length laser automatic cutting device
CN206665630U (en) * 2017-04-22 2017-11-24 杭州皓工自动化科技有限公司 Magnet ring arranging system
CN108081096A (en) * 2016-11-21 2018-05-29 新昌县七星街道同亨模具厂 Emery wheel automatic gas cutting machine
CN207656079U (en) * 2017-12-12 2018-07-27 何旭 A kind of round steel cutter device of intelligent electric automation control
CN207682444U (en) * 2017-11-29 2018-08-03 温州云彩礼品有限公司 A kind of tape-cutting machine being moved easily
CN109249544A (en) * 2018-09-16 2019-01-22 安徽华希电力科技有限公司 A kind of soft graphite lightning protection band cutter device
CN111703851A (en) * 2020-06-19 2020-09-25 杜富明 Metal pipe convenient-to-control real-time feeding mechanism
CN211708432U (en) * 2020-01-13 2020-10-20 武汉前旺激光科技有限公司 Automatic pay-off laser cutting machine
CN111846784A (en) * 2020-07-30 2020-10-30 安徽金三环金属科技有限公司 Feeding device for cleaning aluminum bar
CN111890046A (en) * 2020-07-04 2020-11-06 烟台万兴汽车配件有限公司 Sheet metal part production line and technological process thereof
CN112026017A (en) * 2020-08-14 2020-12-04 钟佐荣 Tile cutting equipment
CN212191767U (en) * 2020-05-25 2020-12-22 青岛利浩金属制品有限公司 Laser cutting device for sheet metal part machining
CN212387126U (en) * 2020-04-25 2021-01-22 上海普泉优实业有限公司 Conveying device for sheet metal parts

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885086A (en) * 2010-06-04 2010-11-17 王金波 Pipe cutting machine tool capable of feeding and spacing automatically
CN205702863U (en) * 2016-05-03 2016-11-23 盐城雄伟汽车部件有限公司 A kind of fixed length laser automatic cutting device
CN108081096A (en) * 2016-11-21 2018-05-29 新昌县七星街道同亨模具厂 Emery wheel automatic gas cutting machine
CN206665630U (en) * 2017-04-22 2017-11-24 杭州皓工自动化科技有限公司 Magnet ring arranging system
CN207682444U (en) * 2017-11-29 2018-08-03 温州云彩礼品有限公司 A kind of tape-cutting machine being moved easily
CN207656079U (en) * 2017-12-12 2018-07-27 何旭 A kind of round steel cutter device of intelligent electric automation control
CN109249544A (en) * 2018-09-16 2019-01-22 安徽华希电力科技有限公司 A kind of soft graphite lightning protection band cutter device
CN211708432U (en) * 2020-01-13 2020-10-20 武汉前旺激光科技有限公司 Automatic pay-off laser cutting machine
CN212387126U (en) * 2020-04-25 2021-01-22 上海普泉优实业有限公司 Conveying device for sheet metal parts
CN212191767U (en) * 2020-05-25 2020-12-22 青岛利浩金属制品有限公司 Laser cutting device for sheet metal part machining
CN111703851A (en) * 2020-06-19 2020-09-25 杜富明 Metal pipe convenient-to-control real-time feeding mechanism
CN111890046A (en) * 2020-07-04 2020-11-06 烟台万兴汽车配件有限公司 Sheet metal part production line and technological process thereof
CN111846784A (en) * 2020-07-30 2020-10-30 安徽金三环金属科技有限公司 Feeding device for cleaning aluminum bar
CN112026017A (en) * 2020-08-14 2020-12-04 钟佐荣 Tile cutting equipment

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