CN112621446A - Corner polishing equipment for copper door production - Google Patents

Corner polishing equipment for copper door production Download PDF

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Publication number
CN112621446A
CN112621446A CN202011498697.1A CN202011498697A CN112621446A CN 112621446 A CN112621446 A CN 112621446A CN 202011498697 A CN202011498697 A CN 202011498697A CN 112621446 A CN112621446 A CN 112621446A
Authority
CN
China
Prior art keywords
box
polishing
motor
grinding
copper door
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.)
Pending
Application number
CN202011498697.1A
Other languages
Chinese (zh)
Inventor
朱志伟
梁友森
吕猛
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.)
Anhui Huilehao Copper Co ltd
Original Assignee
Anhui Huilehao Copper 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 Anhui Huilehao Copper Co ltd filed Critical Anhui Huilehao Copper Co ltd
Priority to CN202011498697.1A priority Critical patent/CN112621446A/en
Publication of CN112621446A publication Critical patent/CN112621446A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/04Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0076Other grinding machines or devices grinding machines comprising two or more grinding tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0092Grinding attachments for lathes or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/10Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention discloses corner polishing equipment for copper door production, which belongs to the technical field of copper door production equipment and comprises a first motor box, wherein a first handle is arranged on one side of the first motor box, and a first motor is fixedly arranged in the first motor box. According to the invention, the copper door can be conveniently clamped for polishing through the arrangement of the balls, the mounting seat, the sliding rod and the spring, the copper door can be conveniently moved through the arrangement of the balls, the polishing of workers can be conveniently carried out through the arrangement of the first handle and the second handle, the labor is saved during use, the front and back surfaces of the copper door can be conveniently polished simultaneously through the arrangement of the second polishing box, the third polishing box, the second motor and the polishing roller, the side edge of the copper door can be conveniently polished through the arrangement of the first motor and the polishing disc, the polishing rotating speed can be detected through the arrangement of the first rotating speed sensor, the second rotating speed sensor and the control center, and the rotating speed can be adjusted through the control center.

Description

Corner polishing equipment for copper door production
Technical Field
The invention relates to polishing equipment, in particular to corner polishing equipment for copper door production, and belongs to the technical field of copper door production equipment.
Background
At the doorways of some luxury villas, people can always see various luxury copper doors, the luxury copper doors have luxury appearance, luxury and beautiful appearance, the copper doors are popular in some apartments and villas of China Taiwan and hong Kong at present, the corrosion resistance, high temperature resistance, oxidation resistance, germ resistance, abrasion resistance and other aspects are very prominent, and the corners of the copper doors are polished after being produced to prevent residual burrs from being generated, so that the overall quality of the copper doors is influenced.
How to study out a convenient card on the copper door, it is more laborsaving to polish, can polish to the positive and negative, can also polish to the side, and the corner equipment of polishing is present the problem that awaits the solution that needs a lot of to the copper door production that can nimble adjustment rotational speed of polishing moreover.
Disclosure of Invention
The invention mainly aims to solve the defects of the prior art and provides corner polishing equipment for copper door production.
The purpose of the invention can be achieved by adopting the following technical scheme:
a corner polishing device for copper door production comprises a first motor box, wherein a first handle is arranged on one side of the first motor box, a first motor is fixedly mounted inside the first motor box, a polishing disc is fixedly mounted at the output end of the first motor, a first polishing box is arranged on the outer side of the polishing disc, a third polishing box is arranged at the top of the first polishing box, a second polishing box is arranged at the bottom of the first polishing box, a second motor is fixedly mounted inside the second polishing box and the third polishing box, a polishing roller is fixedly mounted at the output end of the second motor, a first rotating speed sensor is fixedly mounted on the inner walls of the second polishing box and the third polishing box, a second rotating speed sensor is fixedly mounted on the inner wall of the first polishing box, and a first mounting box is fixedly mounted at one end of the second polishing box, the one end fixed mounting of third case of polishing has the second install bin, first case of polishing with equal fixed mounting has the second handle on the third case of polishing, first install bin with the inside of second install bin all is provided with the mount pad, the inside of mount pad is provided with the ball, be provided with two slide bars on the mount pad, the outside of slide bar is provided with the spring, one side of the first in command is provided with the work and instructs the lamp stand, one side of work instruction lamp stand is provided with control center.
Preferably, connecting pieces are arranged between the third grinding box and the first motor box and between the second grinding box and the first motor box.
Preferably, the ball is rotatably mounted inside the mounting seat, and the ball penetrates through the mounting seat.
Preferably, the spring is movably mounted on the outer side of the sliding rod, and one end of the spring is fixedly connected with the top of the mounting seat.
Preferably, the first mounting box and the second mounting box are both connected with the sliding rod in a sliding manner.
Preferably, the first rotation speed sensor is located on one side of the grinding roller, and the second rotation speed sensor is located on one side of the grinding disc.
Preferably, the control center comprises a display screen and a keyboard, and the display screen is positioned above the keyboard.
Preferably, the work indicating lamp holder is provided with two indicating lamps which are symmetrically distributed.
Preferably, the first grinding box is fixedly connected with the first motor box, and the output end of the first motor penetrates through the first grinding box.
Preferably, there is information transmission between the first and second speed sensors and the control center.
The invention has the beneficial technical effects that: according to the corner polishing equipment for copper door production, provided by the invention, the copper door can be conveniently clamped for polishing through the arrangement of the balls, the mounting seat, the sliding rod and the spring, and can be conveniently moved through the arrangement of the balls, workers can conveniently polish through the arrangement of the first handle and the second handle, the use is more labor-saving, the front and back surfaces of the copper door can be conveniently and simultaneously polished through the arrangement of the second polishing box, the third polishing box, the second motor and the polishing roller, the side edges of the copper door can be conveniently polished through the arrangement of the first motor and the polishing disc, the polishing rotating speed can be detected through the arrangement of the first rotating speed sensor, the second rotating speed sensor and the control center, and the rotating speed can be adjusted through the control center.
Drawings
FIG. 1 is a schematic view showing the overall structure of a preferred embodiment of a corner grinding apparatus for copper door production according to the present invention;
FIG. 2 is a right side view of a preferred embodiment of the corner grinding apparatus for copper door production according to the present invention;
FIG. 3 is a schematic structural view of a first grinding box of a preferred embodiment of the corner grinding equipment for copper door production according to the present invention;
FIG. 4 is a schematic structural view of a second installation box of a preferred embodiment of the corner grinding device for copper door production according to the present invention;
FIG. 5 is a schematic view of a third grinding box of a preferred embodiment of the corner grinding apparatus for copper door production according to the present invention;
fig. 6 is a schematic view of a control center structure of a preferred embodiment of the corner grinding apparatus for copper door production according to the present invention.
In the figure: 1-a first handle, 2-a first motor box, 3-a first motor, 4-a first grinding box, 5-a grinding disc, 6-a second handle, 7-a second motor, 8-a second grinding box, 9-a grinding roller, 10-a first mounting box, 11-a sliding rod, 12-a ball, 13-a second mounting box, 14-a third grinding box, 15-a first rotating speed sensor, 16-a connecting piece, 17-a second rotating speed sensor, 18-a control center, 19-a work indicating lamp holder, 20-a spring, 21-a display screen, 22-a keyboard, 23-an indicating lamp and 24-a mounting seat.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1 to 6, the corner polishing device for copper door production provided by this embodiment includes a first motor box 2, a first handle 1 is disposed on one side of the first motor box 2, a first motor 3 is fixedly mounted inside the first motor box 2, a polishing disc 5 is fixedly mounted at an output end of the first motor 3, a first polishing box 4 is disposed outside the polishing disc 5, a third polishing box 14 is disposed on a top portion of the first polishing box 4, a second polishing box 8 is disposed at a bottom portion of the first polishing box 4, a second motor 7 is fixedly mounted inside each of the second polishing box 8 and the third polishing box 14, a polishing roller 9 is fixedly mounted at an output end of the second motor 7, a first rotation speed sensor 15 is fixedly mounted on inner walls of the second polishing box 8 and the third polishing box 14, a second rotation speed sensor 17 is fixedly mounted on an inner wall of the first polishing box 4, a first mounting box 10 is fixedly mounted at one end of the second polishing box 8, a second mounting box 13 is fixedly mounted at one end of a third grinding box 14, a second handle 6 is fixedly mounted on each of the first grinding box 4 and the third grinding box 14, mounting seats 24 are arranged inside the first mounting box 10 and the second mounting box 13, balls 12 are arranged inside the mounting seats 24, two sliding rods 11 are arranged on the mounting seats 24, springs 20 are arranged outside the sliding rods 11, a work indicating lamp holder 19 is arranged on one side of the first handle 1, and a control center 18 is arranged on one side of the work indicating lamp holder 19. Through ball 12, mount pad 24, slide bar 11 and spring 20's setting, can conveniently block the copper door and polish, and through the setting of ball 12, can also conveniently remove, through the setting of first in command 1 and second in command 6, can make things convenient for the workman to polish, it is more laborsaving to use, through second case 8 of polishing, third case 14 of polishing, the setting of second motor 7 and polishing roller 9, can conveniently polish simultaneously to the positive and negative of copper door, through the setting of first motor 3 and polishing disc 5, can conveniently polish the side of copper door, through first speed sensor 15, the setting of second speed sensor 17 and control center 18, can detect the rotational speed of polishing, and can adjust rotational speed through control center 18.
In the present embodiment, as shown in fig. 1, 3 and 5, a connecting member 16 is provided between the third grinding box 14 and the first motor box 2 and between the second grinding box 8 and the first motor box 2, the first rotation speed sensor 15 is located on one side of the grinding roller 9, the second rotation speed sensor 17 is located on one side of the grinding disc 5, the first grinding box 4 is fixedly connected with the first motor box 2, the output end of the first motor 3 penetrates through the first grinding box 4, and information is transmitted between the first rotation speed sensor 15 and the control center 18 and between the second rotation speed sensor 17 and the control center 18. Through the setting of connecting piece 16, can be connected second grinding box 8 and third grinding box 14 with first motor case, through the setting of first speed sensor 15 and second speed sensor 17, can conveniently detect the rotational speed of grinding roller 9 and grinding disk 5.
In the embodiment, as shown in fig. 1 and 4, the ball 12 is rotatably mounted inside the mounting seat 24, the ball 12 penetrates the mounting seat 24, the spring 20 is movably mounted on the outer side of the sliding rod 11, one end of the spring 20 is fixedly connected with the top of the mounting seat 24, and both the first mounting box 10 and the second mounting box 13 are slidably connected with the sliding rod 11. Through the setting of spring 20, can support the mount pad, through the setting of slide bar 11, can make things convenient for 24 activity from top to bottom, through the setting of ball 12, can make things convenient for equipment to remove on the copper door.
In the present embodiment, as shown in fig. 2 and fig. 6, the control center 18 includes a display screen 21 and a keyboard 22, the display screen 21 is located above the keyboard 22, and two indicator lights 23 are symmetrically arranged on the work indicator light holder 19. Through the setting of control center 18 and keyboard 22, can conveniently adjust the rotational speed of first motor 2 and second motor 7, through the setting of display screen 21, can conveniently show the speed that first rotational speed sensor 15 and second rotational speed sensor 17 detected.
In this embodiment, as shown in fig. 1 to fig. 6, the working process of the corner grinding device for copper door production provided by this embodiment is as follows:
step 1: when the device is used, the device is clamped into the copper door from the edge of the copper door, so that the two balls 12 are attached to the front side and the back side of the copper door, and then the first motor 3 and the second motor 7 are started to polish the copper door through the polishing disc 5 and the polishing roller 9;
step 2: the equipment is held by the first handle 1 and the second handle 6 during polishing, then the copper door is polished by moving along the edge of the copper door, the rotating speeds of the polishing roller 9 and the polishing disc 5 are detected by the first rotating speed sensor 15 and the second rotating speed sensor 17 during polishing, and then the rotating speeds are displayed on the display screen 21;
and step 3: the rotational speeds of the first motor 3 and the second motor 7 can be adjusted through the control center 18 and the keyboard 22, so that the grinding rotational speeds of the grinding disc 5 and the grinding roller 9 can be controlled.
In summary, in the present embodiment, according to the corner polishing apparatus for copper door production of the present embodiment, the ball 12, the mounting seat 24, the sliding rod 11 and the spring 20 are arranged, so that the copper door can be conveniently clamped for polishing, and the ball 12 can be arranged and can be conveniently moved, the first handle 1 and the second handle 6 can be conveniently arranged, so that the polishing of workers can be conveniently performed, the use is labor-saving, the second polishing box 8, the third polishing box 14, the second motor 7 and the polishing roller 9 can be conveniently arranged, so that the front and back sides of the copper door can be conveniently polished simultaneously, the first motor 3 and the polishing disc 5 can be conveniently arranged, the side edges of the copper door can be conveniently polished, the polishing rotation speed can be detected through the arrangement of the first rotation speed sensor 15, the second rotation speed sensor 17 and the control center 18, and the rotation speed can be adjusted through the control center 18, through the setting of connecting piece 16, can be connected second case 8 and the third case 14 of polishing with first motor case, through the setting of first speed sensor 15 and second speed sensor 17, can conveniently detect the rotational speed of polishing roller 9 and the dish 5 of polishing, through the setting of spring 20, can support the mount pad, setting through slide bar 11, can make things convenient for 24 activity from top to bottom, through the setting of ball 12, can make things convenient for equipment to remove on the copper door, through the setting of control center 18 and keyboard 22, can conveniently adjust the rotational speed of first motor 2 and second motor 7, through the setting of display screen 21, can conveniently show the speed that first speed sensor 15 and second speed sensor 17 detected.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.

Claims (10)

1. The corner polishing equipment for copper door production is characterized by comprising a first motor box (2), wherein a first handle (1) is arranged on one side of the first motor box (2), a first motor (3) is fixedly arranged inside the first motor box (2), a polishing disc (5) is fixedly arranged at the output end of the first motor (3), a first polishing box (4) is arranged outside the polishing disc (5), a third polishing box (14) is arranged at the top of the first polishing box (4), a second polishing box (8) is arranged at the bottom of the first polishing box (4), a second motor (7) is fixedly arranged inside the second polishing box (8) and the third polishing box (14), a polishing roller (9) is fixedly arranged at the output end of the second motor (7), and first rotation speed sensors (15) are fixedly arranged on the inner walls of the second polishing box (8) and the third polishing box (14), a second rotating speed sensor (17) is fixedly arranged on the inner wall of the first grinding box (4), one end of the second grinding box (8) is fixedly provided with a first installation box (10), one end of the third grinding box (14) is fixedly provided with a second installation box (13), a second handle (6) is fixedly arranged on each of the first grinding box (4) and the third grinding box (14), the first installation box (10) and the second installation box (13) are internally provided with installation seats (24), the inside of the mounting seat (24) is provided with a ball (12), the mounting seat (24) is provided with two sliding rods (11), a spring (20) is arranged on the outer side of the sliding rod (11), a work indicating lamp holder (19) is arranged on one side of the first handle (1), and a control center (18) is arranged on one side of the work indicating lamp holder (19).
2. A corner grinding device for copper door production according to claim 1, characterized in that connecting pieces (16) are arranged between the third grinding box (14) and the first motor box (2) and between the second grinding box (8) and the first motor box (2).
3. A corner grinding apparatus for copper door production according to claim 1, characterized in that the ball (12) is rotatably mounted inside the mounting seat (24), and the ball (12) penetrates through the mounting seat (24).
4. A corner grinding device for copper door production according to claim 1, characterized in that the spring (20) is movably mounted on the outer side of the sliding rod (11), and one end of the spring (20) is fixedly connected with the top of the mounting seat (24).
5. A corner grinding apparatus for copper door production according to claim 1, wherein the first mounting box (10) and the second mounting box (13) are both slidably connected to the sliding rod (11).
6. A corner grinding apparatus for copper door production according to claim 1, characterized in that the first rotation speed sensor (15) is located on one side of the grinding roller (9) and the second rotation speed sensor (17) is located on one side of the grinding disc (5).
7. A corner grinding apparatus for copper door production according to claim 1, characterized in that the control center (18) comprises a display screen (21) and a keyboard (22), the display screen (21) being located above the keyboard (22).
8. A corner grinding device for copper door production according to claim 1, characterized in that two indicator lights (23) are arranged on the work indicator light holder (19) and are symmetrically distributed.
9. A corner grinding device for copper door production according to claim 1, characterized in that the first grinding box (4) is fixedly connected with the first motor box (2), and the output end of the first motor (3) penetrates through the first grinding box (4).
10. A corner grinding apparatus for copper door production according to claim 1, characterized in that there is a transfer of information between the first rotation sensor (15) and the second rotation sensor (17) and the control centre (18).
CN202011498697.1A 2020-12-17 2020-12-17 Corner polishing equipment for copper door production Pending CN112621446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011498697.1A CN112621446A (en) 2020-12-17 2020-12-17 Corner polishing equipment for copper door production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011498697.1A CN112621446A (en) 2020-12-17 2020-12-17 Corner polishing equipment for copper door production

Publications (1)

Publication Number Publication Date
CN112621446A true CN112621446A (en) 2021-04-09

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Application Number Title Priority Date Filing Date
CN202011498697.1A Pending CN112621446A (en) 2020-12-17 2020-12-17 Corner polishing equipment for copper door production

Country Status (1)

Country Link
CN (1) CN112621446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115647980A (en) * 2022-12-28 2023-01-31 唐山市电力轻钢制品有限公司 Steel processing deckle edge grinding device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007015081A (en) * 2005-07-11 2007-01-25 Matsui Tekkosho:Kk Compound working machine and machining method using the same
CN101983841A (en) * 2010-10-20 2011-03-09 江苏金鼎电动工具集团有限公司 Bidirectional polishing machine
CN105939815A (en) * 2014-01-27 2016-09-14 罗伯特·博世有限公司 Machine tool device
CN108860082A (en) * 2018-05-28 2018-11-23 合肥航机械科技股份有限公司 One kind being used for Motor Maintenance wax-polishing machine
CN208179235U (en) * 2018-05-22 2018-12-04 昆山飞奔塑胶模具有限公司 A kind of grinding device for plastics
CN209319494U (en) * 2019-01-11 2019-08-30 青岛金客隆模具钢板有限公司 A kind of housing upper cover backplate Production of Stamping Die surface processing device
CN110434731A (en) * 2019-08-12 2019-11-12 天津市合兴泰科机电设备有限公司 A kind of inner wall grinding device for coating steel pipe
CN209831157U (en) * 2019-03-08 2019-12-24 惠安闽居机械有限公司 Wall surface grinding device for house building construction
CN210232547U (en) * 2019-06-26 2020-04-03 湖南迈辉环保材料有限公司 Trimming device for gypsum ceiling
CN210879093U (en) * 2019-10-17 2020-06-30 温州鼎龙电子科技有限公司 Steering gear rotor burnishing and polishing device
CN211540737U (en) * 2019-12-31 2020-09-22 青岛鲁强汽车部件有限公司 Rim charge removing device for automobile mold
CN211805425U (en) * 2019-11-04 2020-10-30 王海霞 Water conservancy facility steel structure maintenance rust cleaning device

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007015081A (en) * 2005-07-11 2007-01-25 Matsui Tekkosho:Kk Compound working machine and machining method using the same
CN101983841A (en) * 2010-10-20 2011-03-09 江苏金鼎电动工具集团有限公司 Bidirectional polishing machine
CN105939815A (en) * 2014-01-27 2016-09-14 罗伯特·博世有限公司 Machine tool device
CN208179235U (en) * 2018-05-22 2018-12-04 昆山飞奔塑胶模具有限公司 A kind of grinding device for plastics
CN108860082A (en) * 2018-05-28 2018-11-23 合肥航机械科技股份有限公司 One kind being used for Motor Maintenance wax-polishing machine
CN209319494U (en) * 2019-01-11 2019-08-30 青岛金客隆模具钢板有限公司 A kind of housing upper cover backplate Production of Stamping Die surface processing device
CN209831157U (en) * 2019-03-08 2019-12-24 惠安闽居机械有限公司 Wall surface grinding device for house building construction
CN210232547U (en) * 2019-06-26 2020-04-03 湖南迈辉环保材料有限公司 Trimming device for gypsum ceiling
CN110434731A (en) * 2019-08-12 2019-11-12 天津市合兴泰科机电设备有限公司 A kind of inner wall grinding device for coating steel pipe
CN210879093U (en) * 2019-10-17 2020-06-30 温州鼎龙电子科技有限公司 Steering gear rotor burnishing and polishing device
CN211805425U (en) * 2019-11-04 2020-10-30 王海霞 Water conservancy facility steel structure maintenance rust cleaning device
CN211540737U (en) * 2019-12-31 2020-09-22 青岛鲁强汽车部件有限公司 Rim charge removing device for automobile mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115647980A (en) * 2022-12-28 2023-01-31 唐山市电力轻钢制品有限公司 Steel processing deckle edge grinding device

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Application publication date: 20210409