CN220993885U - Polishing device for aluminum plate production - Google Patents

Polishing device for aluminum plate production Download PDF

Info

Publication number
CN220993885U
CN220993885U CN202322505426.XU CN202322505426U CN220993885U CN 220993885 U CN220993885 U CN 220993885U CN 202322505426 U CN202322505426 U CN 202322505426U CN 220993885 U CN220993885 U CN 220993885U
Authority
CN
China
Prior art keywords
aluminum plate
rotating
polishing
plates
bevel gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202322505426.XU
Other languages
Chinese (zh)
Inventor
杨强
周继康
周继平
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.)
Jiangsu Bomei New Material Technology Co ltd
Original Assignee
Jiangsu Bomei New Material Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Bomei New Material Technology Co ltd filed Critical Jiangsu Bomei New Material Technology Co ltd
Priority to CN202322505426.XU priority Critical patent/CN220993885U/en
Application granted granted Critical
Publication of CN220993885U publication Critical patent/CN220993885U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The application relates to a polishing device for aluminum plate production, and relates to the technical field of aluminum plate production. The polishing device comprises a workbench and a conveying table which are connected with each other, wherein a polishing mechanism is arranged on the workbench, the polishing mechanism comprises two positioning plates and two grinding wheels, the positioning plates and the grinding wheels are in one-to-one correspondence, a rotating cavity is formed in the positioning plates in a penetrating manner along the thickness direction, a rotating piece is arranged in the rotating cavity, the rotating piece is connected with the grinding wheels, the rotating piece drives the grinding wheels to rotate, a polishing cavity is formed between the two grinding wheels, and a cleaning opening is formed in the workbench; the surface of the conveying table is provided with two limiting plates which are parallel to each other, a moving channel for the aluminum plate to pass through is formed between the two limiting plates, and the moving channel is communicated with the polishing cavity. The application has the effect of improving the polishing efficiency and polishing precision of the aluminum plate.

Description

Polishing device for aluminum plate production
Technical Field
The application relates to the technical field of aluminum plate production, in particular to a polishing device for aluminum plate production.
Background
The aluminum plate is a rectangular plate formed by rolling an aluminum ingot, is divided into a plurality of types such as pure aluminum plate, alloy aluminum plate and the like, and has wide application in the fields of building, household appliances and the like.
When aluminum plate carries out production, need cut aluminum plate according to aluminum plate's usage generally, and the flaw such as burr, arch easily appear in aluminum plate incision department after the cutting, for the outward appearance and the normal use of assurance follow-up product, need polish processing to the burr after aluminum plate accomplishes the cutting generally, among the prior art, polish aluminum plate's burr by the manual work generally, but the mode inefficiency of manual work is polished, the precision is relatively poor, so need to improve.
Disclosure of utility model
In order to improve polishing efficiency and polishing precision of an aluminum plate, the application provides a polishing device for aluminum plate production.
The polishing device for aluminum plate production provided by the application adopts the following technical scheme:
The utility model provides an aluminum plate production is with grinding device, includes interconnect's workstation and delivery table, be provided with grinding machanism on the workstation, grinding machanism includes two locating plates and two emery wheels, locating plate and emery wheel both correspond one by one, the locating plate has run through along the thickness direction and has seted up the rotation chamber, be provided with the rotation piece in the rotation chamber, the rotation piece links to each other with the emery wheel, the rotation piece drives the emery wheel and rotates, two form the cavity of polishing between the emery wheel, the cleaning port has been seted up in the workstation; the surface of the conveying table is provided with two limiting plates which are parallel to each other, a moving channel for the aluminum plate to pass through is formed between the two limiting plates, and the moving channel is communicated with the polishing cavity.
Through adopting above-mentioned technical scheme, will need carry out the aluminum plate of polishing processing and place between the limiting plate of both sides, promote aluminum plate along the length direction of limiting plate for aluminum plate gets into the intracavity of polishing, carries out the burr by the emery wheel of both sides to aluminum plate's lateral wall and polishes, uses the emery wheel to polish the mode of processing more stable convenient, compares with manual work and polishes, helps improving efficiency and the precision of polishing; after polishing is finished, the aluminum plate enters the cleaning opening to be washed, so that the production process of the aluminum plate is more coherent and efficient.
Optionally, the conveying table surface is provided with the conveyer belt, the conveyer belt is located between the limiting plates of both sides, the conveyer belt is parallel to the limiting plate setting.
By adopting the technical scheme, the conveying belt is arranged to automatically convey the aluminum plate on the conveying table, so that labor and working time are saved, and the working efficiency of the polishing device can be further improved.
Optionally, two one side that limiting plate kept away from each other all is provided with the moving part, the moving part links to each other with corresponding limiting plate, the moving part drives two limiting plates and removes along the direction that is close to each other or keep away from each other, grinding machanism still includes adjusting part, adjusting part is used for adjusting the interval between the both sides emery wheel.
Through the technical scheme, the limiting plates on two sides can be driven to be close to or far away from each other by the moving part, the width of the moving channel can be adjusted according to the actual size of the aluminum plate, so that the limiting plates can be abutted against the aluminum plate in the moving channel after moving, the aluminum plate can be transmitted on the conveying table in the middle, the aluminum plate can be aligned with the polishing cavity, burrs can be polished stably, and the applicability and convenience of the application are improved.
Optionally, the adjusting component comprises a rotating screw rod, a limiting rod, two groups of fixing seats, a rotating motor, a driving bevel gear and a driven bevel gear; the two fixing seats are all connected to the side wall of the workbench, the cleaning opening is located between the two fixing seats, the rotating screw rod sequentially penetrates through the two fixing seats, the rotating screw rod is rotationally connected with the fixing seats, the rotating motor is arranged on the side wall of the workbench, the driving bevel gear is sleeved on the peripheral wall of the output shaft of the corresponding rotating motor, the driven bevel gear is sleeved on the peripheral wall of the rotating screw rod, the driven bevel gear is meshed with the driving bevel gear, the rotating screw rod comprises two sections of thread sections with opposite rotation directions, the two locating plates are in threaded connection with the peripheral wall of the rotating screw rod, the rotating screw rod drives the two locating plates to move towards directions away from or close to each other after rotating, the limiting rod is arranged between the two fixing seats, and the limiting rod penetrates through the two locating plates.
By adopting the technical scheme, the rotating motor is started, the rotating motor can drive the driving bevel gear to rotate, and the rotating screw rod is driven to rotate together due to the meshing relationship between the driving bevel gear and the driven bevel gear.
Optionally, the department of cleaning mouth department sliding connection has two doors that open and shut, adjusting part still includes two rotation gears, door, rotation gear and the rotation motor three one-to-one that open and shut, rotation gear cover is located the rotation motor perisporium, the door diapire that opens and shuts is provided with driven rack, driven rack and corresponding rotation gear engagement.
Through adopting above-mentioned technical scheme, set up the removal that the door can be according to the locating plate that opens and shuts, adjust the size of wasing mouthful entry in real time to when carrying out the processing of polishing, the burr of being polished down easily gets into in the workstation, thereby has guaranteed the security of wasing mouthful inner structure.
Optionally, the buffer chamber has been seted up to the chamber roof that rotates, the length direction of buffer intracavity wall is unanimous with the direction of movement of locating plate, rotate piece sliding connection in the buffer intracavity, be provided with the buffer in the buffer chamber, the buffer links to each other with rotating the piece.
Through adopting above-mentioned technical scheme, when emery wheel and aluminum plate contact, the aluminum plate will produce effort with the emery wheel between, if adjusting assembly's adjustment distance is not in place, just can lead to the emery wheel to excessively polish aluminum plate, destroy aluminum plate's structural integrity, after seting up the cushion chamber and setting up the bolster, after aluminum plate and emery wheel produced excessive butt, the bolster can be compressed, and then drive the emery wheel and move towards the direction of keeping away from aluminum plate, only be the butt relation between until with aluminum plate and stop, thereby polish aluminum plate lateral wall, the security of the grinding device of the application has been improved.
Optionally, two lateral walls that the locating plate is close to each other all are provided with the deflector, the length direction of deflector is unanimous with the length direction of locating plate, the emery wheel passes corresponding deflector, the deflector is kept away from one side diapire of locating plate and is provided with the backup pad.
Through adopting above-mentioned technical scheme, deflector and backup pad are L shape setting for aluminum plate is breaking away from behind the transport platform, can obtain the support of deflector and backup pad, thereby guarantees the steady performance of polishing processing.
Optionally, the guide plate is close to the lateral wall of limiting plate and has seted up the guide surface.
By adopting the technical scheme, the guide surface is arranged on the side wall of the guide plate, so that a stable guide effect can be continuously provided for the aluminum plate when the aluminum plate is separated from the conveying table, and the aluminum plate can smoothly enter between grinding wheels on two sides for grinding, and the stability of the grinding device is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
The aluminum plate to be polished is arranged between the limiting plates on the two sides, the aluminum plate is pushed along the length direction of the limiting plates, the aluminum plate enters the polishing cavity, burrs are polished on the side walls of the aluminum plate by the grinding wheels on the two sides, and the polishing mode of the grinding wheels is stable and convenient, compared with manual polishing, the polishing efficiency and the polishing precision are improved;
The limiting plates on the two sides can be driven by the moving piece to be close to or far away from each other, so that the width of the moving channel can be adjusted according to the actual size of the aluminum plate, the limiting plates can be propped against the aluminum plate in the moving channel after moving, the aluminum plate can be centrally transmitted on the conveying table, the aluminum plate can be aligned with the polishing cavity, burrs can be polished stably, and the applicability and convenience of the application are improved.
Drawings
Fig. 1 is a schematic structural view of a polishing device for producing an aluminum plate according to an embodiment of the present application.
Fig. 2 is a cross-sectional view at A-A in fig. 1.
Fig. 3 is a partial enlarged view at B in fig. 2.
Fig. 4 is a cross-sectional view of a locating plate according to an embodiment of the present application.
Reference numerals illustrate: 1. a work table; 11. a cleaning port; 12. an opening/closing door; 13. a driven rack; 2. a conveying table; 21. a limiting plate; 22. a moving channel; 23. a conveyor belt; 24. a moving member; 3. a polishing mechanism; 31. a positioning plate; 311. a rotating chamber; 312. a rotating member; 313. a buffer chamber; 314. a buffer member; 32. grinding wheel; 33. a polishing cavity; 34. a guide plate; 341. a guide surface; 35. a support plate; 4. an adjustment assembly; 41. rotating the screw rod; 42. a limit rod; 43. a fixing seat; 44. a rotating motor; 45. a drive bevel gear; 46. a driven bevel gear; 47. the gear is rotated.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a polishing device for aluminum plate production. Referring to fig. 1, the aluminum plate conveying device comprises a workbench 1 and a conveying table 2 which are connected with each other, wherein the conveying table 2 is arranged on one side of the workbench 1, a conveying belt 23 for conveying the aluminum plate is rotatably connected to the surface of the conveying table 2, and the conveying direction of the conveying belt 23 is consistent with the length direction of the conveying table 2; limiting plates 21 are arranged on two sides of the conveyor belt 23, the limiting plates 21 are parallel to the conveyor belt 23, and a moving channel 22 is formed between the limiting plates 21 on two sides so as to limit an aluminum plate conveyed on the conveyor belt 23.
Referring to fig. 1 and 2, a moving member 24 is disposed on one side of each of the two limiting plates 21 away from each other, in this embodiment, the moving member 24 is an air cylinder, a piston rod of the moving member 24 is connected with the corresponding limiting plate 21 through a bolt, so as to drive the two limiting plates 21 to move along a direction close to each other or away from each other, so that a distance between the moving channels 22 is properly adjusted according to a size of the aluminum plate, and the aluminum plate can be transmitted centrally through the moving member 24, so as to ensure a moving route of the limiting plates 21, a guide rod is further disposed on a surface of the conveying table 2, a guide groove for the guide rod to pass through is formed in a penetrating manner along a thickness direction of the limiting plates 21, and a length direction of the guide groove is consistent with a moving direction of the limiting plates 21.
Referring to fig. 3 and 4, a cleaning opening 11 is formed in the workbench 1 for cleaning the polished aluminum plate, a polishing mechanism 3 is arranged at the inlet of the cleaning opening 11, the polishing mechanism 3 comprises two positioning plates 31 and two grinding wheels 32, and the positioning plates 31 and the grinding wheels 32 are arranged in a one-to-one correspondence manner; the locating plate 31 runs through along thickness direction and has offered rotation chamber 311, the buffer chamber 313 has been offered to rotation chamber 311 roof, the length direction in buffer chamber 313 is unanimous with the direction of movement of limiting plate 21, sliding connection has rotor 312 in the buffer chamber 313, in this embodiment, rotor 312 is the motor, grinding wheel 32 links to each other with the output shaft of rotor 312, and then can drive grinding wheel 32 rotation, thereby polish the filter plate lateral wall, form the chamber 33 of polishing between the grinding wheel 32 of both sides, the chamber 33 of polishing communicates with movable channel 22, and then make the aluminum plate get into the chamber 33 of polishing through movable channel 22.
Referring to fig. 4, a buffer member 314 is disposed in the buffer cavity 313, in this embodiment, the buffer member 314 is a spring, one end of the buffer member 314 is connected with the inner wall of the buffer cavity 313 by gluing, and the other end is connected with the driving member by gluing, so that when the grinding wheel 32 and the aluminum plate are excessively abutted, the buffer member 314 can be compressed, thereby driving the grinding wheel 32 to move, and further avoiding excessive polishing of the aluminum plate, so as to ensure the structural integrity of the aluminum plate.
Referring to fig. 2 and 3, the side walls of the two positioning plates 31, which are close to each other, are connected with guide plates 34 by welding, the length direction of each guide plate 34 is consistent with the length direction of each positioning plate 31, the grinding wheel 32 passes through the corresponding guide plate 34, a supporting plate 35 is integrally formed on the bottom wall of one side of each guide plate 34, which is far away from each positioning plate 31, and the supporting plates 35 and the guide plates 34 are arranged in an L shape, so that when the aluminum plates are separated from the moving channels 22 for polishing, the aluminum plates can be still supported, and the stability of polishing processing is improved; the guide surface 341 is formed on the side wall, close to the limiting plate 21, of the guide plate 34, so that the aluminum plate can stably enter the polishing cavity 33 for polishing.
Referring to fig. 1 and 3, the polishing mechanism 3 further includes an adjusting assembly 4, the adjusting assembly 4 is used for adjusting the distance between the grinding wheels 32 at two sides to adapt to polishing processing of aluminum plates with different specifications, and the adjusting assembly 4 includes a rotating screw 41, a limiting rod 42, two groups of fixing seats 43, a rotating motor 44, a driving bevel gear 45, a driven bevel gear 46 and a rotating gear 47, wherein the fixing seats 43, the rotating motor 44, the driving bevel gear 45, the driven bevel gear 46 and the rotating gear 47 are arranged in a one-to-one correspondence.
Referring to fig. 1 and 3, two fixing seats 43 are connected to the side wall of the workbench 1 by welding, a cleaning opening 11 is positioned between the two fixing seats 43, and a rotary screw 41 sequentially penetrates through the two fixing seats 43 and is in rotary connection with the fixing seats 43 by a bearing; the two rotating motors 44 are connected to the side wall of the workbench 1 through bolts, the driving bevel gear 45 is sleeved on the peripheral wall of the output shaft of the rotating motor 44 in a key connection mode, the driven bevel gear 46 is sleeved on the peripheral wall of the rotating screw rod 41 and meshed with the driving bevel gear 45, and the rotating screw rod 41 can be driven to rotate through the rotating motor 44.
Referring to fig. 3, the rotating screw 41 includes two threaded sections with opposite rotation directions, the central ends of the two threaded sections are defined as parting lines, the two positioning plates 31 are in threaded connection with the peripheral wall of the rotating screw 41, and the two positioning plates 31 respectively correspond to one threaded section, when the rotating screw 41 rotates, the two positioning plates 31 can move towards directions away from or approaching each other, and further the grinding wheel 32 is driven to move, the limiting rod 42 is arranged between the two fixing seats 43, and the limiting rod 42 passes through the two positioning plates 31 to limit the positioning plates 31.
Referring to fig. 3, two opening and closing doors 12 are slidably connected to the opening and closing door 11, the opening and closing doors 12 and the rotating gears 47 are arranged in a one-to-one correspondence manner, the rotating gears 47 are sleeved on the peripheral wall of the corresponding rotating motor 44, the bottom wall of the opening and closing door 12 is connected with a driven rack 13 through welding, the length direction of the driven rack 13 is consistent with the moving direction of the opening and closing door 12, the driven rack 13 is meshed with the corresponding rotating gears 47, and accordingly the opening size of the opening and closing door 12 can be adjusted, and the probability that polishing residues enter the cleaning opening 11 is reduced.
The embodiment of the application provides a polishing device for aluminum plate production, which comprises the following implementation principles: the aluminum plate that will polish is placed in the surface of carrying platform 2, drives limiting plate 21 through moving piece 24 and removes, so that aluminum plate can carry out the transport placed in middle, adjusts the interval between the both sides emery wheel 32 through adjusting part 4, starts conveyer belt 23, drives aluminum plate and removes towards the direction of emery wheel 32, polishes the aluminum plate lateral wall through emery wheel 32, and aluminum plate after polishing gets into and washs in the mouth 11, thereby accomplishes the burr polishing to aluminum plate.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. Grinding device is used in aluminum plate production, its characterized in that: including interconnect's workstation (1) and delivery table (2), be provided with grinding machanism (3) on workstation (1), grinding machanism (3) are including two locating plates (31) and two emery wheels (32), locating plate (31) and emery wheel (32) both one-to-one, locating plate (31) have run through along the thickness direction and have seted up rotation chamber (311), be provided with rotation piece (312) in rotation chamber (311), rotation piece (312) link to each other with emery wheel (32), rotation piece (312) drive emery wheel (32) rotate, two form between emery wheel (32) and polish chamber (33), have seted up cleaning port (11) in workstation (1). Two limiting plates (21) which are parallel to each other are arranged on the surface of the conveying table (2), a moving channel (22) for an aluminum plate to pass through is formed between the two limiting plates (21), and the moving channel (22) is communicated with the polishing cavity (33).
2. The polishing device for aluminum plate production according to claim 1, wherein: the conveying table (2) is provided with a conveying belt (23) on the surface, the conveying belt (23) is located between two limiting plates (21), and the conveying belt (23) is parallel to the limiting plates (21).
3. The polishing device for aluminum plate production according to claim 1, wherein: two limiting plates (21) are far away from each other one side all is provided with moving part (24), moving part (24) links to each other with corresponding limiting plates (21), moving part (24) drive two limiting plates (21) along being close to each other or the direction of keeping away from each other, grinding machanism (3) still include adjusting part (4), adjusting part (4) are used for adjusting the interval between both sides emery wheel (32).
4. A polishing apparatus for aluminum plate production as recited in claim 3, wherein: the adjusting assembly (4) comprises a rotating screw rod (41), a limiting rod (42), two groups of fixing seats (43), a rotating motor (44), a driving bevel gear (45) and a driven bevel gear (46); two fixing bases (43) are all connected to the side wall of a workbench (1), a cleaning port (11) is located between the two fixing bases (43), a rotating screw rod (41) sequentially penetrates through the two fixing bases (43), the rotating screw rod (41) is rotationally connected with the fixing bases (43), a rotating motor (44) is arranged on the side wall of the workbench (1), a driving bevel gear (45) is sleeved on the peripheral wall of an output shaft of the corresponding rotating motor (44), a driven bevel gear (46) is sleeved on the peripheral wall of the rotating screw rod (41), the driven bevel gear (46) is meshed with the driving bevel gear (45), the rotating screw rod (41) comprises two sections of thread sections with opposite rotation directions, two positioning plates (31) are connected with the peripheral wall of the rotating screw rod (41) in a threaded mode, the rotating screw rod (41) drives the two positioning plates (31) to move towards directions away from or close to each other, and a limiting rod (42) is arranged between the two fixing bases (43) on the two sides.
5. The polishing device for aluminum plate production as recited in claim 4, wherein: the cleaning device is characterized in that two opening and closing doors (12) are slidably connected to the opening of the cleaning opening (11), the adjusting assembly (4) further comprises two rotating gears (47), the opening and closing doors (12), the rotating gears (47) and the rotating motor (44) are in one-to-one correspondence, the rotating gears (47) are sleeved on the peripheral wall of the rotating motor (44), driven racks (13) are arranged on the bottom wall of the opening and closing door (12), and the driven racks (13) are meshed with the corresponding rotating gears (47).
6. The polishing device for aluminum plate production according to claim 1, wherein: the top wall of the rotating cavity (311) is provided with a buffer cavity (313), the length direction of the inner wall of the buffer cavity (313) is consistent with the moving direction of the positioning plate (31), the rotating piece (312) is slidably connected in the buffer cavity (313), the buffer cavity (313) is internally provided with a buffer piece (314), and the buffer piece (314) is connected with the rotating piece (312).
7. The polishing device for aluminum plate production according to claim 1, wherein: the two lateral walls that locating plate (31) are close to each other all are provided with deflector (34), the length direction of deflector (34) is unanimous with the length direction of locating plate (31), emery wheel (32) pass corresponding deflector (34), one side diapire that deflector (34) kept away from locating plate (31) is provided with backup pad (35).
8. The polishing device for aluminum plate production as recited in claim 7, wherein: the side wall of the guide plate (34) close to the limiting plate (21) is provided with a guide surface (341).
CN202322505426.XU 2023-09-15 2023-09-15 Polishing device for aluminum plate production Active CN220993885U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322505426.XU CN220993885U (en) 2023-09-15 2023-09-15 Polishing device for aluminum plate production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322505426.XU CN220993885U (en) 2023-09-15 2023-09-15 Polishing device for aluminum plate production

Publications (1)

Publication Number Publication Date
CN220993885U true CN220993885U (en) 2024-05-24

Family

ID=91090543

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322505426.XU Active CN220993885U (en) 2023-09-15 2023-09-15 Polishing device for aluminum plate production

Country Status (1)

Country Link
CN (1) CN220993885U (en)

Similar Documents

Publication Publication Date Title
CN208992409U (en) Double-station modularization sanding and polishing lathe
CN207682160U (en) A kind of grinding attachment being clamped automatically
CN110695703B (en) Cutting device is used in processing of robot spare part
WO2020215509A1 (en) Cutting device for textile cloth production
CN113231696B (en) Gear grinding machine used in gear body production process
CN107350917A (en) One kind machining uses sheet material edge polisher
CN220993885U (en) Polishing device for aluminum plate production
CN112401411B (en) Pretreatment production line for processing biomass fiber shoes
CN111168533A (en) Piston ring processing and grinding device
CN207058242U (en) One kind machining uses sheet material edge polisher
CN111958853A (en) Square stone finished product processing equipment
CN111015481A (en) Novel polishing machine
CN216298897U (en) Edge grinding machine for stone and rock plate
CN212122659U (en) Special surface grinding machine for machining comb tooth plane
CN112008545B (en) Automatic cutting and polishing equipment for engine shell
CN212192433U (en) Dry type frosting and deburring machine for plates
CN204955030U (en) Double -side press planer
CN110315146B (en) Chain cutter gear machining numerical control machine tool
CN221185878U (en) High-speed chain transmission multi-head linear edge grinding machine
CN111571349A (en) Dry type frosting and deburring machine for plates
CN221064586U (en) Automatic feeding and discharging machining milling machine
CN211072770U (en) Cutting machine convenient to cut
CN220005467U (en) Flattening device for steel plate pickling
CN219725631U (en) Automatic clear up refrigerated lathe device
CN212948017U (en) A deburring device for foaming board production

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant