CN109571251A - Part is polished the sanding and polishing device in anti-sticking gap by a kind of automobile case - Google Patents

Part is polished the sanding and polishing device in anti-sticking gap by a kind of automobile case Download PDF

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Publication number
CN109571251A
CN109571251A CN201811591533.6A CN201811591533A CN109571251A CN 109571251 A CN109571251 A CN 109571251A CN 201811591533 A CN201811591533 A CN 201811591533A CN 109571251 A CN109571251 A CN 109571251A
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CN
China
Prior art keywords
polishing
inflation
ring
linking
sanding
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Granted
Application number
CN201811591533.6A
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Chinese (zh)
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CN109571251B (en
Inventor
陈伟振
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.)
RUIAN KAIYU ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd.
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Ningbo Meixing Electrical And Mechanical Co Ltd
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Priority to CN201811591533.6A priority Critical patent/CN109571251B/en
Publication of CN109571251A publication Critical patent/CN109571251A/en
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Publication of CN109571251B publication Critical patent/CN109571251B/en
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Classifications

    • 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
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/04Headstocks; Working-spindles; Features relating thereto
    • 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
    • B24B23/00Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • B24B55/00Safety 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

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

Abstract

It polishes the sanding and polishing device in anti-sticking gap the invention discloses part by a kind of automobile case, its structure includes power connecting end, inflate handle, it is connected installing port, it is connected open tubular column, polishing barrel, button, power connecting end is embedded in inflation handle bottom inner portion and electrical connection, linking installing port is installed on the inflation one end of handle far from power connecting end, be connected open tubular column bottom end through linking installing port inside, inclination inflation port far from inflation axis one end with can wealthy shift(ing) ring be connected, can wealthy shift(ing) ring outer ring be intertwined with soft polishing body, when polishing barrel carries out sanding and polishing on auto parts, by outer bound pair, its button carries out pressing control, make its to inflation axis inside be inflated, to which its inflatable column be overhanged, high speed rotation polishing, when less than gap, it can be drawn off, both it will not be pulled bad, it will not Allow casing deformation between gap.

Description

Part is polished the sanding and polishing device in anti-sticking gap by a kind of automobile case
Technical field
The invention belongs to automotive fields, more specifically, anti-sticking particularly with regard to part polishing by a kind of automobile case The sanding and polishing device in gap.
Background technique
Current auto parts polishing mode has been more and more, but since some positions are more special, still Hand polish is not lacked, when automobile has been mounted so as to almost, more internal widgets is also needed to carry out pico- polishing adjustment, and The shell that the position and automobile that need to be polished install is at the position of adjacent seat.
It being found based on aforementioned present invention people, existing auto parts burnishing device is primarily present following deficiency, such as:
It is to need the cylindrical brush of similar small brushes due to carrying out polishing to its widget, in the process of its high speed rotation polishing In, it can be inevitably moved to apertured position, since hairbrush is meticulous, be easier to be caught in the gap of automobile case, if firmly will If its hairbrush is extracted, dubbing is that the hair of hairbrush falls damage, and serious point is the intact no institute of hairbrush, but due to hairbrush Pull out firmly, by the two panels shell between its gap pull out deformation in addition it is uneven.
Therefore need to propose that part by a kind of automobile case is polished the sanding and polishing device in anti-sticking gap.
Summary of the invention
It is to need the cylindrical brush of similar small brushes to solve above-mentioned technology due to carrying out polishing to its widget, in its height During speed rotation polishing, it can be inevitably moved to apertured position, since hairbrush is meticulous, be easier to be caught in automobile case In gap, if firmly extracting its hairbrush, dubbing is that the hair of hairbrush falls damage, and serious point is the intact no institute of hairbrush, But pulling out firmly due to hairbrush, the two panels shell between its gap is pulled out into deformation or even uneven problem.
Part is polished the purpose and effect of the sanding and polishing device in anti-sticking gap by a kind of automobile case of the present invention, by following Particular technique means are reached:
Its structure includes power connecting end, inflation handle, linking installing port, linking open tubular column, polishing barrel, button.
The power connecting end is embedded in inflation handle bottom inner portion and electrical connection, the linking installing port are installed on inflation The one end of handle far from power connecting end, through being connected inside installing port, the linking is hollow for the linking open tubular column bottom end Column is equipped with polishing barrel far from one end of linking installing port and is located on same axle center, and the button is embedded in inflation handle Portion.
The polishing barrel include shell, soft polishing body, inflation axis, inclination inflation port, can wealthy shift(ing) ring, it is described soft Soft polishing body through interior of shell and it is rounded be uniformly distributed, the inclination inflation port with inflation axis be mutually communicated, institute State the one end of inclination inflation port far from inflation axis with can wealthy shift(ing) ring be connected, it is described can wealthy shift(ing) ring outer ring and soft throwing Body of light is intertwined.
As a further improvement of the present invention, the soft polishing body includes firm locking device, small leakage hole, inflation Column, confining bed pull drawing outer layer, and the firm locking device, which sets there are two and is installed on to pull, draws outer layer bottom end, the small leakage hole It inside through confining bed and is uniformly distributed, the confining bed outer surface is connected with drawing outer layer inner surface is pulled, the confining bed It is embedded with inflatable column far from the one end for drawing outer layer is pulled, the inflation top end is in mushroom arc-shaped, the small leakage hole and closing Layer uniform intervals installation.
As a further improvement of the present invention, the firm locking device includes firm pedestal, buckles, tears outer layer lattice, The buckle sets there are two and is embedded in firm base interior, and the outer layer lattice of tearing are set to firm pedestal upper right side, described steady Gu pedestal is in the trapezium structure of two sides arc.
As a further improvement of the present invention, described pull draws outer layer including pullling card slot, closing mouth, ventilation mouth, pirouette Body pulls ring, returning elastic rope, and the closing mouth and ventilation mouth interval are installed, and the closing mouth top, which is equipped with, pulls card slot, The returning elastic rope is wound in pirouette external surface, one end that the returning elastic rope is turned far from original place with pull ring phase Connection, the original place swivel are the high cylindrical structure in indsole two sides.
As a further improvement of the present invention, it is described can wealthy shift(ing) ring include shifting chute, semiclosed shell, gag lever post, run through Through-hole, anti-slip sliding rail, through inside semiclosed shell, the gag lever post sets there are two and is installed on semiclosed shell the shifting chute Inside right end, it is described through through-hole through inside semiclosed shell end to the right, the anti-slip sliding rail is located between two shifting chutes, The anti-slip sliding rail combines with through through-hole in spoon type structure.
As a further improvement of the present invention, the semiclosed shell include arc vent rod, mobile outlet, half-closed layer, It is connected delivery outlet, mobile ventilating groove, through arc vent rod top, the mobile ventilating groove is embedded in half for the mobile outlet Inside confining bed, the linking delivery outlet is installed on half-closed layer end outer surface to the right, the arc-shaped structure of arc vent rod, The mobile ventilating groove is arc body.
Compared with prior art, the invention has the following beneficial effects:
When polishing barrel carries out sanding and polishing on auto parts, by outer bound pair, its button carries out pressing control, keeps its right Be inflated inside inflation axis, so that its inflatable column be overhanged, high speed rotation polishing, when inflatable column in the process of running by When being caught between gap, first stop the operation of its equipment, to be pulled out by external force, makes during pullling outer Pulling for layer draws outer layer card to be still stuck between gap, and internal confining bed is skidded off along drawing outer layer inner wall movement is pulled, so that closing Mouth is pulled out along the rotation of original place swivel, the gas inside inflatable column is betrayed by small leakage hole with ventilation mouth, so that it is not So full, when gas disappears to a certain extent, when being less than gap, it can be drawn off, will not both be pulled bad, will not be allowed Casing deformation between gap.
Detailed description of the invention
Fig. 1 be by a kind of automobile case of the present invention part polish anti-sticking gap sanding and polishing device structural schematic diagram.
Fig. 2 is a kind of vertical view schematic diagram of internal structure of polishing barrel of the present invention.
Fig. 3 faces working condition schematic diagram of internal structure for a kind of inflatable column of the present invention.
Fig. 4 faces enlarged structure schematic diagram for a kind of firm locking device of the present invention.
Fig. 5 is that a kind of pull of the present invention draws outer layer to face schematic diagram of internal structure.
Fig. 6 be one kind of the present invention can wealthy shift(ing) ring vertical view schematic diagram of internal structure.
Fig. 7 faces schematic diagram of internal structure for a kind of semiclosed shell of the present invention.
In figure: power connecting end -1, inflation handle -2, linking installing port -3, linking open tubular column -4, polishing barrel -5, button - 6, shell -51, soft polishing body -52, inflation axis -53, inclination inflation port -54, can wealthy shift(ing) ring -55, firm closing dress It sets -521, small leakage hole -522, inflatable column -523, confining bed -524, pull drawing outer layer -525, firm pedestal -5211, buckle - 5212, outer layer lattice -5213 are torn, card slot -5251 is pullled, closing mouth -5252, ventilation mouth -5253, original place swivel -5254, pulls Ring -5255, shifting chute -551, semiclosed shell -552, gag lever post -553, runs through through-hole -554, is anti-slip returning elastic rope -5256 Sliding rail -555, arc vent rod -5521, mobile outlet -5522, half-closed layer -5523, linking delivery outlet -5524, movement are ventilative Slot -5525.
Specific embodiment
The present invention is described further below in conjunction with attached drawing:
Embodiment:
As shown in attached drawing 1 to attached drawing 7:
The present invention provides the sanding and polishing device that a kind of automobile case side part polishes anti-sticking gap, and structure includes power supply Cohesive end 1, inflation handle 2, linking installing port 3, linking open tubular column 4, polishing barrel 5, button 6.
The power connecting end 1 is embedded in inflation 2 bottom inner portion of handle and electrical connection, the linking installing port 3 are installed on Inflate the one end of handle 2 far from power connecting end 1,4 bottom end of linking open tubular column through be connected installing port 3 inside, it is described Linking open tubular column 4 is equipped with polishing barrel 5 far from one end of linking installing port 3 and is located on same axle center, and the button 6 is embedded in It inflates inside handle 2.
The polishing barrel 5 include shell 51, soft polishing body 52, inflation axis 53, inclination inflation port 54, can wealthy movement Ring 55, the softness polishing body 52 through the inside of shell 51 and it is rounded be uniformly distributed, the inclination inflation port 54 with fill Gas axis 53 is mutually communicated, it is described inclination inflation port 54 far from inflation axis 53 one end with can wealthy shift(ing) ring 55 be connected, It is described can wealthy 55 outer ring of shift(ing) ring be intertwined with soft polishing body 52.
Wherein, the soft polishing body 52 includes firm locking device 521, small leakage hole 522, inflatable column 523, confining bed 524, it pulls and draws outer layer 525, the firm locking device 521, which sets there are two and is installed on to pull, draws 525 bottom end of outer layer, the small gas leakage Hole 522 is through 524 inside of confining bed and is uniformly distributed, and 524 outer surface of confining bed is connected with drawing 525 inner surface of outer layer is pulled It connects, the confining bed 524 is embedded with inflatable column 523 far from the one end for drawing outer layer 525 is pulled, and 523 top of inflatable column is in mushroom Arc-shaped, the small leakage hole 522 are installed with 524 uniform intervals of confining bed, and described pull draws outer layer 525 to be located at small leakage hole 522 Outer wall, when it, which is pulled, draws outer layer 525 is mobile to open the outer wall of small leakage hole 522, the gas inside inflatable column 523 will be lost Stifled power is flowed out by small leakage hole 522.
Wherein, the firm locking device 521 includes firm pedestal 5211, buckle 5212, tears outer layer lattice 5213, described Buckle 5212 sets there are two and is embedded in inside firm pedestal 5211, and the outer layer lattice 5213 of tearing are set to firm 5211 right side of pedestal Top, the firm pedestal 5211 are in the trapezium structure of two sides arc, and the shape of the firm pedestal 5211 keeps it more firm Install, its connection with foreign object of 5212 pairs of buckle is consolidated.
Wherein, described pull draws outer layer 525 including pullling card slot 5251, closing mouth 5252, ventilation mouth 5253, original place swivel 5254, ring 5255, returning elastic rope 5256 are pullled, the closing mouth 5252 is installed with the interval of ventilation mouth 5253, the closing mouth 5252 tops, which are equipped with, pulls card slot 5251, the returning elastic rope 5256 be wound in original place turn 5254 outer surfaces, described time Position stretch cord 5256 is connected far from one end of original place swivel 5254 with ring 5255 is pullled, and the original place swivel 5254 is indsole The high cylindrical structure in two sides, it is described when pullling card slot 5251 and up being pulled, ventilation mouth 5253 is exposed, inside is facilitated Carry out discharge, when up being pulled, original place swivel 5254 will be rotated and then for ventilation mouth 5253 and closing mouth 5252, will Its returning elastic rope 5256 is wound rotation, when so that ventilation mouth 5253 and closing mouth 5252 losing resistance, by returning elastic The elastic force of rope 5256 drives its all rotation playback.
Wherein, it is described can wealthy shift(ing) ring 55 include shifting chute 551, semiclosed shell 552, gag lever post 553, through through-hole 554, Anti-slip sliding rail 555, through inside semiclosed shell 552, the gag lever post 553 sets there are two and is installed on the shifting chute 551 Inside semiclosed 552 right end of shell, it is described through through-hole 554 through inside semiclosed shell 552 end to the right, the anti-slip sliding rail 555 are located between two shifting chutes 551, and the anti-slip sliding rail 555 combines with through through-hole 554 in spoon type structure, institute When stating the object movement inside anti-slip sliding rail 555, when being moved to through through-hole 554, its gas can be connected and be discharged, limit Bar 553 will be embedded in another shifting chute 551 and be extended movement, prevent its movement displacement.
Wherein, the semiclosed shell 552 includes arc vent rod 5521, mobile outlet 5522, half-closed layer 5523, linking Delivery outlet 5524, mobile ventilating groove 5525, through 5521 top of arc vent rod, the movement is saturating for the movement outlet 5522 Air drain 5525 is embedded in inside half-closed layer 5523, and the linking delivery outlet 5524 is installed on the end appearance to the right of half-closed layer 5523 Face, the arc-shaped structure of the arc vent rod 5521, the mobile ventilating groove 5525 are arc body, the arc vent rod Gas inside 5521 will be pushed by mobile 5522 output of outlet, until it is pushed to linking delivery outlet 5524, it can It outputs it, arc vent rod 5521 will be mobile along mobile ventilating groove 5525, prevent its deviation.
The specifically used mode and effect of the present embodiment:
In the present invention, when polishing barrel 5 carries out sanding and polishing on auto parts, by outer bound pair, its button 6 is pressed Control makes it to being inflated inside inflation axis 53, and gas will enter arc vent rod by tilting inflation port 54 In 5521, thus mobile by the mobile ventilating groove 5525 of the mechanical compliance of gas until mobile outlet 5522 is against through through-hole 554 On, so that its semiclosed shell 552 be opened, so that gag lever post 553 is slided along other end of shifting chute 551, extended It comes, exports 5522 for gas by inside inflatable column 523, to be supportted directly, passing through through the implantation of through-hole 554 when mobile Firm fixation of the pedestal 5211 to it, can be stable prop up, during operation, shell, which pulls, draws 525 quilt of outer layer When the gap being stuck between two shells, it will firmly be pulled slightly by extraneous power, so that confining bed 524 and to pull drawing outer Layer 525 is detached from, and closing mouth 5252 will be drawn out with ventilation mouth 5253, so that original place swivel 5254 drives returning elastic rope 5256 are wound rotation, and the gas inside inflatable column 523 will be flowed out by small leakage hole 522 with ventilation mouth 5253, directly Disappear to inflatable column 523 to hour also than gap, can be drawn off, i.e., will not damage itself, its shell will not be allowed to be broken It is bad.
Using technical solution of the present invention or those skilled in the art under the inspiration of technical solution of the present invention, if Similar technical solution is counted out, and reaches above-mentioned technical effect, is to fall into protection scope of the present invention.

Claims (6)

  1. The sanding and polishing device in anti-sticking gap 1. a kind of automobile case side part is polished, structure include power connecting end (1), fill Gas handle (2), linking installing port (3), linking open tubular column (4), polishing barrel (5), button (6), it is characterised in that:
    The power connecting end (1) is embedded in inflation handle (2) bottom inner portion and electrical connection, linking installing port (3) installation In inflation handle (2) far from power connecting end (1) one end, the linking open tubular column (4) bottom end through be connected installing port (3) Inside, linking open tubular column (4) are equipped with polishing barrel (5) far from one end of linking installing port (3) and are located on same axle center, It is internal that the button (6) is embedded in inflation handle (2);
    The polishing barrel (5) include shell (51), soft polishing body (52), inflation axis (53), inclination inflation port (54), can Wealthy shift(ing) ring (55), the softness polishing body (52) it is internal through shell (51) and it is rounded be uniformly distributed, the inclination is filled Gas port (54) with inflation axis (53) be mutually communicated, it is described inclination inflation port (54) far from inflation axis (53) one end with Can wealthy shift(ing) ring (55) be connected, it is described can wealthy shift(ing) ring (55) outer ring be intertwined with soft polishing body (52).
  2. The sanding and polishing device in anti-sticking gap 2. a kind of automobile case side part according to claim 1 is polished, feature Be: the softness polishing body (52) includes firm locking device (521), small leakage hole (522), inflatable column (523), confining bed (524), it pulls and draws outer layer (525), the firm locking device (521), which sets there are two and is installed on to pull, draws outer layer (525) bottom end, institute It is internal through confining bed (524) and be uniformly distributed to state small leakage hole (522), confining bed (524) outer surface and to pull drawing outer Layer (525) inner surface is connected, and the confining bed (524) is embedded with inflatable column (523) far from the one end for pulling drawing outer layer (525).
  3. The sanding and polishing device in anti-sticking gap 3. a kind of automobile case side part according to claim 2 is polished, feature Be: the firm locking device (521) includes firm pedestal (5211), buckle (5212), tears outer layer lattice (5213), described Buckle (5212) sets there are two and is embedded in firm pedestal (5211) inside, and described tear outer layer lattice (5213) are set to firm pedestal (5211) upper right side.
  4. The sanding and polishing device in anti-sticking gap 4. a kind of automobile case side part according to claim 2 is polished, feature Be: described pull draws outer layer (525) including pullling card slot (5251), closing mouth (5252), ventilation mouth (5253), original place swivel (5254), ring (5255), returning elastic rope (5256) are pullled, the closing mouth (5252) and ventilation mouth (5253) interval are installed, Closing mouth (5252) top, which is equipped with, pulls card slot (5251), and the returning elastic rope (5256) is wound in original place swivel (5254) outer surface, the returning elastic rope (5256) are connected far from one end of original place swivel (5254) with ring (5255) is pullled It connects.
  5. The sanding and polishing device in anti-sticking gap 5. a kind of automobile case side part according to claim 1 is polished, feature Be: it is described can wealthy shift(ing) ring (55) include shifting chute (551), semiclosed shell (552), gag lever post (553), through through-hole (554), anti-slip sliding rail (555), the shifting chute (551) is internal through semiclosed shell (552), and the gag lever post (553) sets There are two and be installed on inside semiclosed shell (552) right end, it is described through through-hole (554) it is to the right through semiclosed shell (552) End is internal, and the anti-slip sliding rail (555) is located between two shifting chutes (551).
  6. The sanding and polishing device in anti-sticking gap 6. a kind of automobile case side part according to claim 5 is polished, feature Be: the semiclosed shell (552) includes arc vent rod (5521), mobile outlet (5522), half-closed layer (5523), linking Delivery outlet (5524), mobile ventilating groove (5525), mobile export (5522) are through arc vent rod (5521) top, institute It states mobile ventilating groove (5525) and is embedded in half-closed layer (5523) inside, the linking delivery outlet (5524) is installed on half-closed layer (5523) end outer surface to the right.
CN201811591533.6A 2018-12-25 2018-12-25 Grinding and polishing device for grinding anti-clamping gap of other part of automobile shell Active CN109571251B (en)

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Application Number Priority Date Filing Date Title
CN201811591533.6A CN109571251B (en) 2018-12-25 2018-12-25 Grinding and polishing device for grinding anti-clamping gap of other part of automobile shell

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Application Number Priority Date Filing Date Title
CN201811591533.6A CN109571251B (en) 2018-12-25 2018-12-25 Grinding and polishing device for grinding anti-clamping gap of other part of automobile shell

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CN109571251B CN109571251B (en) 2020-08-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114888683A (en) * 2022-06-16 2022-08-12 吴江市高瑞庭园金属制品有限公司 Long and narrow groove inner polishing device for metal furniture processing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6716095B1 (en) * 2003-01-08 2004-04-06 Techway Industrial Co., Ltd. Cordless surface dresser
CN101121247A (en) * 2006-08-11 2008-02-13 中芯国际集成电路制造(上海)有限公司 Device for cleaning grinding head
CN105033806A (en) * 2015-08-19 2015-11-11 山东永高智能科技有限公司 Pneumatic control floating type burring machine
US9931734B2 (en) * 2015-01-20 2018-04-03 Htc Sweden Ab Carrier disk, system comprising such carrier disk and floor grinding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6716095B1 (en) * 2003-01-08 2004-04-06 Techway Industrial Co., Ltd. Cordless surface dresser
CN101121247A (en) * 2006-08-11 2008-02-13 中芯国际集成电路制造(上海)有限公司 Device for cleaning grinding head
US9931734B2 (en) * 2015-01-20 2018-04-03 Htc Sweden Ab Carrier disk, system comprising such carrier disk and floor grinding machine
CN105033806A (en) * 2015-08-19 2015-11-11 山东永高智能科技有限公司 Pneumatic control floating type burring machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114888683A (en) * 2022-06-16 2022-08-12 吴江市高瑞庭园金属制品有限公司 Long and narrow groove inner polishing device for metal furniture processing
CN114888683B (en) * 2022-06-16 2023-09-22 吴江市高瑞庭园金属制品有限公司 Metal furniture processing is with long and narrow inslot portion burnishing device

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Effective date of registration: 20200803

Address after: 325200 Zhejiang city of Wenzhou province Ruian City Tangxia Town Village

Applicant after: RUIAN KAIYU ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd.

Address before: 315700 Fengbei Road, Dingtang Town, Xiangshan County, Ningbo City, Zhejiang Province

Applicant before: NINGBO MEIXING ELECTROMECHANICAL Co.,Ltd.

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Denomination of invention: A polishing device for grinding and anti jamming gaps of parts near the car shell

Effective date of registration: 20231026

Granted publication date: 20200825

Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Wenzhou Ruian Small and Micro Enterprise Sub branch

Pledgor: RUIAN KAIYU ENVIRONMENTAL PROTECTION EQUIPMENT CO.,LTD.

Registration number: Y2023980062844