CN108436695A - A kind of environment-friendly type pipe bevel grinding device - Google Patents
A kind of environment-friendly type pipe bevel grinding device Download PDFInfo
- Publication number
- CN108436695A CN108436695A CN201810126136.5A CN201810126136A CN108436695A CN 108436695 A CN108436695 A CN 108436695A CN 201810126136 A CN201810126136 A CN 201810126136A CN 108436695 A CN108436695 A CN 108436695A
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- China
- Prior art keywords
- cross plate
- environment
- grinding device
- lower cross
- friendly type
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0015—Hanging grinding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/007—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for end faces of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines 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
- B24B9/04—Machines 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention discloses a kind of environment-friendly type pipe bevel grinding devices, are related to pipe fitting grinding apparatus technical field, for solving the problem of the serious pollution environment of existing pipe bevel manual polishing dust.It includes grinder buffing mechanism and holder, sliding rail, elevating mechanism, rotary electric machine and clamping device, holder includes upper cross plate, riser and lower cross plate, upper cross plate is fixedly connected with lower cross plate by riser, sliding rail is set on lower cross plate, angle adjusting mechanism is additionally provided on upper cross plate, grinder buffing mechanism is connected with angle adjusting mechanism, grinding device further includes dedusting mechanism, dedusting mechanism includes sequentially connected dust hood, universal air suction arm, wind turbine, gas-guide tube and disposal box, disposal box is set on lower cross plate, the present invention is by being arranged grinder buffing mechanism, angle adjusting mechanism, elevating mechanism and clamping device can realize the different type groove automatically grinding of different size tubulars, reduce labor intensity, live dustlessization of polishing is realized by the way that dedusting mechanism is arranged.
Description
Technical field
The present invention relates to pipe fitting grinding apparatus technical fields, polish and fill more particularly to a kind of environment-friendly type pipe bevel
It sets.
Background technology
Groove refers to the groove of certain geometrical shape that the position to be welded of weldment processes and is assembled into, groove be mainly for
Welding workpiece ensures welding degree, the type face processed with machine-tooled method under general case, it is desirable that can also gas cutting when not high
(if it is a kind of weld seam, needing ultrasonic examination, then can only use machine-tooled method), as needed, there is K-type groove, V-type slope
Mouthful, U-shaped groove etc., but require to retain certain root face mostly.
Groove is particularly critical to welding, and often groove quality will have a direct impact on welding quality, and then influence entire engineering matter
Amount.At the scene when processing welding, generally requires to remove groove face oxide layer, ensure through welding, to improve welding quality, tradition side
Method is that the hand-held grinding wheel of workpeople clears up groove, does so not only waste of manpower, and often due to worker holds angle
It is bad, cause groove face shape uneven, groove quality cannot be guaranteed, and make the live dust of polishing serious, this
If a little dust will seriously endanger the health of worker by worker's inspiration lung.
Invention content
It is an object of the invention to：A kind of environment-friendly type pipe realized automatic pipe bevel polishing and have dedusting function is provided
Part groove grinding device.
The present invention specifically uses following technical scheme to achieve the goals above：
A kind of environment-friendly type pipe bevel grinding device, including grinder buffing mechanism and holder, grinder buffing mechanism packet
Polishing motor and grinding wheel are included, further includes the sliding rail set gradually from top to bottom, elevating mechanism, rotary electric machine and clamping device, institute
It includes upper cross plate, riser and lower cross plate to state holder, and the upper cross plate is fixedly connected with lower cross plate by riser, the sliding rail setting
In on the lower cross plate, being additionally provided with angle adjusting mechanism, the grinder buffing mechanism and angle adjusting mechanism on the upper cross plate
Connection, the grinding device further includes dedusting mechanism, and the dedusting mechanism includes the sequentially connected dust suction that passes through
Cover, universal air suction arm, wind turbine, gas-guide tube and disposal box, the disposal box are set on the lower cross plate.
The operation principle of base case of the present invention is：When work, pipe fitting is clamped on clamping device, adjusts angular adjustment
Mechanism keeps grinding wheel angle identical as bevel angle to be polished, then adjusts elevating mechanism up and down and move forward and backward, and pipe bevel is made to lean on
Nearly grinding wheel, mobile universal air suction arm open power supply, grinding wheel rotation is realized groove polishing, turned with dust hood close to pipe fitting to be polished
Dynamic motor rotation realizes that pipe bevel is circumferentially polished, and wind turbine generates negative pressure and realizes dust suction work.
Further, the dust hood is U-shaped hollow dust hood, the U-shaped hollow dust hood inner wall trepanning.It is arranged U-shaped
Hollow dust hood is to make dust hood surround polishing pipe fitting, improve pick-up performance.
Further, the disposal box is internally provided with filter mesh layer.Setting filter mesh layer can purify dust laden air, with
Exclude pure air, protection polishing site environment.
Further, the disposal box side is provided with gas outlet.Gas outlet is set clean gas is discharged, avoids gas
It is accumulated in disposal box, airborne dust is generated in disposal box, influence pick-up performance.
Further, the angle adjusting mechanism includes connecting rod and the second link block, described connecting rod one end and upper cross
Plate is hinged, and the other end is fixedly connected with the second link block, and second link block is fixedly connected with polishing motor, and the sliding rail is set
It sets on lower cross plate, the elevating mechanism is hand screw rod elevator, and hand screw rod elevator bottom connects with sliding rail sliding
It connects, the first link block is fixedly connected at the top of the hand screw rod elevator, the clamping device includes Holding seat, clamping cross
Plate, supporting rod, fixed jaw and elastic telescopic arm, the Holding seat are connect with rotary electric machine axis top, and the supporting rod is set to
On Holding seat, the clamping transverse slat is fixedly connected with supporting rod, and elastic telescopic arm one end is fixedly connected with clamping transverse slat,
The other end is fixedly connected with fixed jaw.Hand screw rod elevator is set, facilitates control pipe fitting to move up and down, and adjust accurately, if
It sets elastic telescopic arm and facilitates the various sizes of pipe fitting of polishing, improve grinding device applicability.
Further, the lower cross plate is provided with strip-shaped hole.This is done to avoid lower cross plate that lead screw is hindered to move up and down,
Lead screw up and down adjustment range is improved, keeps grinding device more adaptable to different size tubulars, application range is wider.
Further, the clamping transverse slat and supporting rod have four pieces.Four pieces of clamping transverse slats surround an annular wall, by four pieces
For they sup-port on Holding seat, annular wall is used to support elastic telescopic arm, and pipe fitting lower end can be stretched from the gap of supporting rod
Go out, can be adapted for pipe fitting of different shapes, improves the applicability of device.
Further, the angle adjusting mechanism further includes fixed pin and angle instruction disk.Setting angle indicate disk be for
Accurate and visual adjusting grinding angle is identical as bevel angle, improves polishing precision, and setting fixed pin consolidates the angle regulated
It is fixed, it avoids bruting process medium plain emery wheel from shaking, influences precision of polishing.
Further, the lower cross plate bottom is equipped with supporting leg.Grinding device stability can be improved by doing so, while can
Grinding device is padded, so that screw lower end is moved freely a distance downwards, improves lead screw up and down adjustment range, make polishing
Device is more adaptable to different size tubulars, and application range is wider.
Beneficial effects of the present invention are as follows：
1. being used cooperatively by grinder buffing mechanism, angle adjusting mechanism, elevating mechanism and clamping device of the invention, real
The automatically grinding function of existing pipe bevel, liberates manual operation, reduces labor intensity.
2. the present invention by the way that dedusting mechanism is arranged, can in time take the dust that polishing generates away, the live ring of protection polishing
Border.
3. the present invention facilitates by the way that universal air suction arm is arranged and adjusts dust hood position in time according to groove grinding angle, keep away
Exempt from dust hood to collide with grinder buffing mechanism and clamping device, improves grinding device application range.
4. the present invention makes dust hood surround polishing pipe fitting, improves dust removing effects by the way that U-shaped hollow dust hood is arranged.
5. the present invention can improve lead screw up and down adjustment range, make grinding device to not by the way that strip-shaped hole and supporting leg is arranged
More adaptable with size tubulars, application range is wider.
6. transverse slat and supporting rod is clamped by setting in the present invention, pipe fitting lower end is allow to be stretched out from the gap of supporting rod, it can
To be suitable for pipe fitting of different shapes, the applicability of device is improved.
Description of the drawings
Fig. 1 is a kind of environment-friendly type pipe bevel grinding device structural schematic diagram；
Fig. 2 is clamping device structural schematic diagram；
Fig. 3 is dust hood vertical view；
Fig. 4 is lower cross plate structural schematic diagram.
Reference numeral：1- upper cross plates, 2- fixed pins, 3- angles instruction disk, 4- risers, 5- dust hoods, the universal air suction arms of 6-,
7- wind turbines, 8- gas-guide tubes, 9- filter mesh layers, 10- disposal boxes, the gas outlets 11-, 12- lower cross plates, 13- supporting legs, 14- sliding rails, 15- hands
Shake screw lift, the first link blocks of 16-, 17- rotary electric machines, 18- Holding seats, 19- supporting rods, 20- clampings transverse slat, 21-
Elastic telescopic arm, 22- fixed jaws, 23- grinding wheels, 24- polishings motor, the second link blocks of 25-, 26- connecting rods.
Specific implementation mode
In order to which those skilled in the art are better understood from the present invention, below in conjunction with the accompanying drawings with following embodiment to the present invention
It is described in further detail.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment provides a kind of environment-friendly type pipe bevel grinding devices, including sand
Workpiece polishing mechanism and holder are taken turns, the grinder buffing mechanism includes polishing motor 24 and grinding wheel 23, further includes setting successively from top to bottom
Sliding rail 14, elevating mechanism, rotary electric machine 17 and the clamping device set, the holder include upper cross plate 1, riser 4 and lower cross plate 12,
The upper cross plate 1 is fixedly connected with lower cross plate 12 by riser 4, and the sliding rail 14 is set on the lower cross plate 12, it is described on
Angle adjusting mechanism is additionally provided on transverse slat 1, the grinder buffing mechanism is connected with angle adjusting mechanism, and the grinding device also wraps
Include dedusting mechanism, the dedusting mechanism include pass through sequentially connected dust hood 5, universal air suction arm 6, wind turbine 7,
Gas-guide tube 8 and disposal box 10, the disposal box 10 are set on the lower cross plate 12.When work, pipe fitting is clamped in clamping device
On, adjust angle adjusting mechanism, keep 23 angle of grinding wheel identical with bevel angle polish, then adjust elevating mechanism it is upper and lower with it is front and back
Movement, makes pipe bevel close to grinding wheel 23, and mobile universal air suction arm 6 opens power supply, sand with dust hood 5 close to pipe fitting to be polished
23 rotation of wheel realizes that groove polishing, the rotation of rotary electric machine 17 realize that pipe bevel is circumferentially polished, and wind turbine 7 generates negative pressure and realizes dust suction
Work.
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment is further improved on the basis of embodiment 1, specially
The dust hood 5 is U-shaped hollow dust hood 5, and the 5 inner wall trepanning of U-shaped hollow dust hood, the disposal box 10 is internally provided with filter
Stratum reticulare 9,10 side of the disposal box are provided with gas outlet 11.It is to make dust hood 5 surround polishing that U-shaped hollow dust hood 5, which is arranged,
Pipe fitting improves pick-up performance, and filter mesh layer 9 is arranged and gas outlet 11 further strengthens dust purification, keep the scene intact environment.
Embodiment 3
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment is further improved on the basis of embodiment 2, specially
The angle adjusting mechanism includes connecting rod 26 and the second link block 25, and 26 one end of the connecting rod is hinged with upper cross plate 1, another
End is fixedly connected with the second link block 25, and second link block 25 is fixedly connected with polishing motor 24, and the sliding rail 14 is arranged
On lower cross plate 12, the elevating mechanism is hand screw rod elevator 15,15 bottom of hand screw rod elevator and sliding rail 14
It is slidably connected, 15 top of the hand screw rod elevator is fixedly connected with the first link block 16, and the clamping device includes clamping
Pedestal 18, clamping transverse slat 20, supporting rod 19, fixed jaw 22 and elastic telescopic arm 21, the Holding seat 18 and rotary electric machine 17
Axis top connects, and the supporting rod 19 is set on Holding seat 18, and the clamping transverse slat 20 is fixedly connected with supporting rod 19, described
21 one end of elastic telescopic arm is fixedly connected with clamping transverse slat 20, and the other end is fixedly connected with fixed jaw 22.Hand screw rod liter is set
Drop machine 15 facilitates control pipe fitting to move up and down, and adjusts accurately, and setting elastic telescopic arm 21 facilitates the various sizes of pipe of polishing
Part improves grinding device applicability.
Embodiment 4
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment is further improved on the basis of embodiment 3, specially
The lower cross plate 12 is provided with strip-shaped hole, and the clamping transverse slat 20 and supporting rod 19 have four pieces.It is in order to avoid under that strip-shaped hole, which is arranged,
Transverse slat 12 hinder lead screw move up and down, improve lead screw up and down adjustment range, make grinding device to different size tubulars adaptability more
By force, application range is wider.Four pieces of clamping transverse slats 20 surround an annular wall, and Holding seat 18 is supported on by four pieces of supporting rods 19
On, annular wall is used to support elastic telescopic arm 21, and pipe fitting lower end can be stretched out from the gap of supporting rod 19, can be adapted for difference
The pipe fitting of shape improves the applicability of device.
Embodiment 5
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment is further improved on the basis of embodiment 4, specially
The angle adjusting mechanism further includes fixed pin 2 and angle instruction disk 3.Angle is set and indicates that disk 3 is for accurate and visual adjusting
Grinding angle is identical as bevel angle, improves polishing precision, and the angle regulated is fixed, avoids polishing by setting fixed pin 2
Journey medium plain emery wheel 23 shakes, and influences precision of polishing.
Embodiment 6
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment is further improved on the basis of embodiment 5, specially
12 bottom of the lower cross plate is equipped with supporting leg 13.Setting supporting leg 13 can improve grinding device stability, while can fill polishing
It sets padded, so that screw lower end is moved freely a distance downwards, improve lead screw up and down adjustment range, make grinding device to not
More adaptable with size tubulars, application range is wider.
The above, only presently preferred embodiments of the present invention, are not intended to limit the invention, patent protection model of the invention
It encloses and is subject to claims, equivalent structure variation made by every specification and accompanying drawing content with the present invention, similarly
It should be included within the scope of the present invention.
Claims (9)
1. a kind of environment-friendly type pipe bevel grinding device, including grinder buffing mechanism and holder, the grinder buffing mechanism include
Polishing motor (24) and grinding wheel (23), it is characterised in that：Further include the sliding rail (14) set gradually from top to bottom, elevating mechanism,
Rotary electric machine (17) and clamping device, the holder include upper cross plate (1), riser (4) and lower cross plate (12), the upper cross plate
(1) be fixedly connected by riser (4) with lower cross plate (12), the sliding rail (14) is set on the lower cross plate (12), it is described on
Angle adjusting mechanism is additionally provided on transverse slat (1), the grinder buffing mechanism is connected with angle adjusting mechanism, and the grinding device is also
Including dedusting mechanism, the dedusting mechanism include pass through sequentially connected dust hood (5), universal air suction arm (6),
Wind turbine (7), gas-guide tube (8) and disposal box (10), the disposal box (10) are set on the lower cross plate (12).
2. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：The dust hood (5) is U-shaped
Hollow dust hood (5), U-shaped hollow dust hood (5) the inner wall trepanning.
3. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：The disposal box (10) is internal
Equipped with filter mesh layer (9).
4. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：Disposal box (10) side
It is provided with gas outlet (11).
5. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：The angle adjusting mechanism packet
Connecting rod (26) and the second link block (25) are included, described connecting rod (26) one end is hinged with upper cross plate (1), and the other end and second connects
It connects block (25) to be fixedly connected, second link block (25) is fixedly connected with polishing motor (24), and sliding rail (14) setting exists
On lower cross plate (12), the elevating mechanism is hand screw rod elevator (15), hand screw rod elevator (15) bottom and cunning
Rail (14) is slidably connected, and the first link block (16), the clamping machine are fixedly connected at the top of the hand screw rod elevator (15)
Structure includes Holding seat (18), clamping transverse slat (20), supporting rod (19), fixed jaw (22) and elastic telescopic arm (21), the folder
It holds pedestal (18) to connect with rotary electric machine (17) axis top, the supporting rod (19) is set on Holding seat (18), the clamping
Transverse slat (20) is fixedly connected with supporting rod (19), and described elastic telescopic arm (21) one end is fixedly connected with clamping transverse slat (20), separately
One end is fixedly connected with fixed jaw (22).
6. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：The lower cross plate (12) is provided with
Strip-shaped hole.
7. environment-friendly type pipe bevel grinding device according to claim 5, it is characterised in that：The clamping transverse slat (20) and
Supporting rod (19) has four pieces.
8. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：The angle adjusting mechanism is also
Including fixed pin (2) and angle instruction disk (3).
9. environment-friendly type pipe bevel grinding device according to claim 1, it is characterised in that：Lower cross plate (12) bottom
Equipped with supporting leg (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126136.5A CN108436695A (en) | 2018-02-08 | 2018-02-08 | A kind of environment-friendly type pipe bevel grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126136.5A CN108436695A (en) | 2018-02-08 | 2018-02-08 | A kind of environment-friendly type pipe bevel grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108436695A true CN108436695A (en) | 2018-08-24 |
Family
ID=63191857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810126136.5A Pending CN108436695A (en) | 2018-02-08 | 2018-02-08 | A kind of environment-friendly type pipe bevel grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108436695A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109176272A (en) * | 2018-11-10 | 2019-01-11 | 河南寰球航空装备科技有限公司 | A kind of multifunctional polishing device |
| CN109318067A (en) * | 2018-10-30 | 2019-02-12 | 赵虎 | A kind of vulcanie ring surface processing equipment and rubber ring process of surface treatment |
| CN110434728A (en) * | 2019-07-29 | 2019-11-12 | 浦江县恒凯水晶有限公司 | Crystal grinding device |
| CN110561211A (en) * | 2019-09-10 | 2019-12-13 | 浙江海洋大学 | pipe orifice polishing device |
| CN110900346A (en) * | 2019-12-12 | 2020-03-24 | 郑喜凤 | Multi-functional steel pipe grinding device for building |
| CN111070060A (en) * | 2020-01-03 | 2020-04-28 | 蒋德明 | Special small-size rust cleaning device that polishes of kitchen hardware |
| KR20220001622U (en) * | 2020-12-24 | 2022-07-01 | 주식회사 한국가스기술공사 | Fixing apparatus for lapping of safety valve disc |
-
2018
- 2018-02-08 CN CN201810126136.5A patent/CN108436695A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318067A (en) * | 2018-10-30 | 2019-02-12 | 赵虎 | A kind of vulcanie ring surface processing equipment and rubber ring process of surface treatment |
| CN109176272A (en) * | 2018-11-10 | 2019-01-11 | 河南寰球航空装备科技有限公司 | A kind of multifunctional polishing device |
| CN109176272B (en) * | 2018-11-10 | 2020-06-19 | 济南鑫金龙机械有限公司 | Multifunctional grinding device |
| CN110434728A (en) * | 2019-07-29 | 2019-11-12 | 浦江县恒凯水晶有限公司 | Crystal grinding device |
| CN110561211A (en) * | 2019-09-10 | 2019-12-13 | 浙江海洋大学 | pipe orifice polishing device |
| CN110900346A (en) * | 2019-12-12 | 2020-03-24 | 郑喜凤 | Multi-functional steel pipe grinding device for building |
| CN110900346B (en) * | 2019-12-12 | 2021-06-01 | 江苏恒健建设集团有限公司 | Multi-functional steel pipe grinding device for building |
| CN111070060A (en) * | 2020-01-03 | 2020-04-28 | 蒋德明 | Special small-size rust cleaning device that polishes of kitchen hardware |
| KR20220001622U (en) * | 2020-12-24 | 2022-07-01 | 주식회사 한국가스기술공사 | Fixing apparatus for lapping of safety valve disc |
| KR200496374Y1 (en) | 2020-12-24 | 2023-01-12 | 주식회사 한국가스기술공사 | Fixing apparatus for lapping of safety valve disc |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180824 |