CN107877317A - A kind of improved hand-held sanding apparatus - Google Patents
A kind of improved hand-held sanding apparatus Download PDFInfo
- Publication number
- CN107877317A CN107877317A CN201710380315.7A CN201710380315A CN107877317A CN 107877317 A CN107877317 A CN 107877317A CN 201710380315 A CN201710380315 A CN 201710380315A CN 107877317 A CN107877317 A CN 107877317A
- Authority
- CN
- China
- Prior art keywords
- cavity
- power set
- slot
- installs case
- solderless wrapped
- 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
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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
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/14—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A kind of improved hand-held sanding apparatus, including installs case and multiple solderless wrapped connection disks, the solderless wrapped connection disk place placed in the middle is provided with hole slot, cavity is provided with the installs case, the first power set are installed with the cavity bottom wall, first power set are connected with rotary column, the rotary column upper end penetrates the hole slot and is installed in rotation in the cavity roof, temperature control device is provided with the installs case above the cavity, the solderless wrapped connection disk upper and lower ends are correspondingly provided with connector loop, the anchor ring groove being engaged with the connector loop is provided with the cavity end wall, the connector loop is rotatably installed in the anchor ring groove.
Description
Technical field
The present invention relates to grinding workpieces technical field, and in particular to a kind of improved hand-held sanding apparatus.
Background technology
Sanding and polishing is carried out to workpiece surface commonly using sanding apparatus in some work pieces process factories, it is smooth to increase
Degree.Hand sander with small volume, rotating speed is high, stability is good, one-hand operation, indefatigability, the workpiece essence of polishing
Cause etc. many merits and be widely used.But it is existing in, because the supply lines of hand sander is longer, in folding and unfolding extremely
Be not easy and easily trampled, pull etc. the influence of extraneous factor and cause supply lines epidermis be damaged, cause service life to decline, separately
Outside, it is more due to being worked in processing factory while using sander, so being to reduce floor space and electricity consumption to its reasonable setting
The important guarantee of security.
The content of the invention
It is an object of the invention to provide a kind of improved hand-held sanding apparatus and its application method, can overcome existing
The drawbacks described above of technology.
According to the present invention, a kind of improved hand-held sanding apparatus of apparatus of the present invention, including installs case and it is multiple around
Disk is connect, the solderless wrapped connection disk place placed in the middle is provided with hole slot, and cavity is provided with the installs case, is fixed in the cavity bottom wall
First power set are installed, first power set are connected with rotary column, and the rotary column upper end penetrates the hole slot and can turned
It is arranged on dynamicly in the cavity roof, is provided with temperature control device in the installs case above the cavity, on the solderless wrapped connection disk
Lower both ends are correspondingly provided with connector loop, and the anchor ring groove being engaged with the connector loop, the rank are provided with the cavity end wall
Connect ring to be rotatably installed in the anchor ring groove, be provided with port slot on the outside of the installs case, solderless wrapped connection Electricity Federation line on the solderless wrapped connection disk,
And the Electricity Federation line end pin is fixedly connected with sander, the sander is arranged on the port slot, in the rotary column on divide into
It is equipped with multiple keyholed back plate devices being engaged with the solderless wrapped connection disk, the keyholed back plate device includes being fixedly mounted on the in the rotary column
Two power set and relative set the second power set upper and lower ends the first loose slot, in first loose slot
Portable plate is movably installed with, screw hole is provided with the portable plate, stud, the stud are connected with the screw hole
It is connected with second power set, also left and right is correspondingly provided with the second activity of the first loose slot described in communications and liaison in the rotary column
Groove, push arm is movably installed with second loose slot, the installs case bottom is fixed with fixed plate, the fixed plate four
Hole is provided with simultaneously on individual corner, described hole is connected with fixing bolt.
Further technical scheme, the end face that the portable plate closes on second power set are fixedly installed convex top
Block, the convex jacking block are movably arranged in the extended slot of the first loose slot both sides, and it is dynamic that the extended slot closes on described second
Fitting recess is provided with the end wall of power apparatus, the pressing device with the sander Electricity Federation, institute are installed with the fitting recess
The end face for stating convex jacking block towards second power set is installed with the pressing lever being engaged with the pressing device.
Further technical scheme, the end face of remote second power set of portable plate are provided with first and tiltedly supported
Face, the push arm medial extremity is provided with tiltedly tiltedly supports face with described first to face is engaged second, on second loose slot
Position guiding groove is provided with lower end walls, the push arm upper and lower ends face, which is correspondingly provided with, leads a block, described to lead a block activity
In the position guiding groove, and return unit is installed with the position guiding groove, the return unit touches with a block of leading.
Further technical scheme, the connector loop lower end are provided with iron shot, and the iron shot touches with the anchor ring groove bottom wall
Connect.
Further technical scheme, the aperture of the hole slot are more than the external diameter of the rotary column.
Further technical scheme, the push arm outboard end are fixedly installed sheet rubber, and the sheet rubber is provided with and institute
State the same radian of hole slot inwall.
Further technical scheme, the temperature control device include the system being arranged in the installs case above the cavity
In the airway tube of the refrigerator both sides, described airway tube one end is fixed with the refrigerator to be connected for cooler and left and right relative set
Connect, the other end is set with the cavity top communications and liaison, and the cavity bottom right side, which is provided with to lead to, passes through wall body on the right side of the installs case
Siphunculus.
The beneficial effects of the invention are as follows：
1. because apparatus of the present invention are in original state, Electricity Federation line is furled on solderless wrapped connection disk, and sander is contracted in port slot
In, therefore, Electricity Federation line can be avoided to set everywhere, be advantageous to the protection to Electricity Federation line, can extend Electricity Federation line service life it is same
When prevent the generation of electric shock accidents；
2. during polishing, some sander can be randomly choosed, because apparatus of the present invention are provided with multiple sanders, therefore, can be avoided
More polishing facilities are installed, floor space can be reduced；
3. during take-up and unwrapping wire is carried out to solderless wrapped connection disk, can all sander be set temporarily to power off, so as in take-up and put
Power outage security during line, moreover, when unwrapping wire is to correct position, sheet rubber is only fully retracted to the second loose slot
In, making rotary column sander is powered after being connected with solderless wrapped connection disk detachment can polish workpiece, so as to not influence other
The use of sander；
4. apparatus of the present invention are simple in construction, stable, safe.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of inventive embodiments or technical scheme of the prior art
The required accompanying drawing used is briefly described in technology description, it should be apparent that, drawings in the following description are only to invent
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the overall structure diagram of a modification of the present invention type hand-held sanding apparatus.
Fig. 2 is the inside mplifying structure schematic diagram of the region of interest in Fig. 1.
Fig. 3 is structural representation when sheet rubber stretches out in Fig. 2.
Fig. 4 is Fig. 1 top view.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
This specification（Including any accessory claim, summary and accompanying drawing）Disclosed in any feature, except non-specifically chatting
State, can alternative features equivalent by other or provided with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
As Figure 1-4, a modification of the present invention type hand-held sanding apparatus, including installs case 1 and multiple solderless wrapped connections
Disk 3,3 place placed in the middle of solderless wrapped connection disk are provided with hole slot 30, and cavity 10, the bottom of cavity 10 are provided with the installs case 1
The first power set 11 are installed with wall, first power set 11 are connected with rotary column 12, and the upper end of rotary column 12 is worn
Enter the hole slot 30 and be installed in rotation in the roof of cavity 10, set in the installs case 1 of the top of cavity 10
Have temperature control device, the upper and lower ends of solderless wrapped connection disk 3 are correspondingly provided with connector loop 33, be provided with the end wall of cavity 10 with it is described
The anchor ring groove 16 that connector loop 33 is engaged, the connector loop 33 are rotatably installed in the anchor ring groove 16, the outside of installs case 1
It is provided with port slot 15, solderless wrapped connection Electricity Federation line 31 on the solderless wrapped connection disk 3, and the end pin of Electricity Federation line 31 is fixedly connected with sander
32, the sander 32 is arranged on the port slot 15, is vertically disposed with and multiple matches with the solderless wrapped connection disk 3 in the rotary column 12
The keyholed back plate device of conjunction, the keyholed back plate device include the second power set 4 being fixedly mounted in the rotary column 12 and accordingly set
The first loose slot 120 in the upper and lower ends of the second power set 4 is put, work is movably installed with first loose slot 120
Plate 41 is moved, screw hole is provided with the portable plate 41, stud 42, the stud 42 and institute is connected with the screw hole
State the second power set 4 to connect, also left and right is correspondingly provided with the second activity of the first loose slot described in communications and liaison in the rotary column 12
Groove, push arm 51 is movably installed with second loose slot, the bottom of installs case 1 is fixed with fixed plate 6, the fixation
Hole 61 is provided with simultaneously on 6 four corners of plate, described hole 61 is connected with fixing bolt 62, passes through the fixing bolt 62
The fixed plate 6 can be fixed on ground, so as to increase the fastness when installs case 1 is fixed.
Valuably, the portable plate 41 closes on the end faces of second power set 4 and is fixedly installed convex jacking block 411, institute
State convex jacking block 411 to be movably arranged in the extended slot 122 of the both sides of the first loose slot 120, the extended slot 122 closes on described
Fitting recess 414 is provided with the end wall of second power set 4, is installed with the fitting recess 414 and the sander 32
The pressing device 413 of Electricity Federation, the end face of convex jacking block 411 towards second power set 4 are installed with and the pressing
The pressing lever 412 that device 413 is engaged.
Valuably, the end face of remote second power set 4 of the portable plate 41 is provided with first and tiltedly supports face 410, institute
State the push medial extremity of arm 51 and be provided with and tiltedly second tiltedly support face 510, second loose slot to what face 410 was engaged with described first
Position guiding groove 54 is provided with upper and lower ends wall, the push upper and lower ends face of arm 51, which is correspondingly provided with, leads a block 52, described to lead
Position block 52 is movably arranged in the position guiding groove 54, and return unit 53 is installed with the position guiding groove 54, the return unit
53 touch with a block 52 of leading, so as to by it is described lead top pressure on the inside of the phase of a block 52 make described second tiltedly support face 510 with it is described
First tiltedly touches to face 410.
Valuably, the lower end of connector loop 33 is provided with iron shot 34, and the iron shot 34 touches with the bottom wall of anchor ring groove 16,
So as to which frictional force can be reduced when the connector loop 33 rotates, make operation smooth.
Valuably, the aperture of the hole slot 30 be more than the rotary column 12 external diameter, so as to make the rotary column 12 with it is described
Solderless wrapped connection disk 3 forms gap.
Valuably, the push outboard end of arm 51 is fixedly installed sheet rubber 55, and the sheet rubber 55 is provided with and the hole
The same radian of the inwall of groove 30, so as to it is described push arm 51 it is protruding when the sheet rubber 55 can with the hole slot 30 in
Wall is brought into close contact.
Valuably, the temperature control device include the refrigerator 7 that is arranged in the installs case 1 of the top of the cavity 10 with
And left and right relative set, in the airway tube 71 of the both sides of refrigerator 7, described one end of airway tube 71 is fixed with the refrigerator 7 to be connected
Connect, the other end is set with the top communications and liaison of cavity 10, and the bottom right side of cavity 10, which is provided with to lead to, passes through the right side wall of installs case 1
The siphunculus 72 of body；When outside air temperature is higher, after controlling the refrigerator 7 to run, from the airway tube 71 to the sky
Injection cold air in chamber 10, form cross-ventilation and discharged the hot gas in the cavity 10 by the siphunculus 72, so as to realize
To the fast cooling of cavity 10, prevent Electricity Federation line 31 from distributing heat in power supply process and can not discharge and cause to damage or burn
Ruin the generation of phenomenon.
During original state, the Electricity Federation line 31 is furled on the solderless wrapped connection disk 3, and the sander 32 be contracted in it is described
In port slot 15, a block 52 of leading is made described second tiltedly to support face in the presence of the return unit 53 to inner side top pressure
510 are tiltedly touched with described first to face 410, and the sheet rubber 55 is contracted in second loose slot completely, so as to described
Rotary column 12 forms gap with the solderless wrapped connection disk 3；
During polishing, after selecting some sander, run corresponding second power set 4, second power set 4 can drive
The stud 42 rotates, and because the stud 42 and the screw thread of portable plate 41 coordinate, therefore, the stud 42 can drive described
The direction of remote second power set 4 of portable plate 41 is slided, the side of remote second power set 4 of portable plate 41
To after slip, tiltedly tiltedly touched due to described second to face 510 with described first to face 410, therefore, the portable plate 41 can drive
The push arm 51 overcomes the elastic reaction of the return unit 53 and slid in and out, and the push arm 51 can make institute after sliding in and out
It is protruding and touched with the inwall of the hole slot 30 to state sheet rubber 55, so as to make the rotary column 12 be rubbed with the solderless wrapped connection disk 3
Wipe connection, and the remote pressing device 413 of the pressing lever 412, now stop second power set 4 and start described the
One power set 11, first power set 11 can drive the rotary column 12 to rotate, and the rotary column 12 can drive described
Solderless wrapped connection disk 3 rotates and carries out payoff operation to the Electricity Federation line 31, after the Electricity Federation line 31 is adjusted to appropriate length, stops
Only simultaneously the second power set 4, second power set 4 described in reverse starting drive the activity to first power set 11
Plate 41 closes on second power set 4 and slided, described to lead a block 52 in the presence of the return unit 53 by inner side top pressure
And the sheet rubber 55 is fully retracted in second loose slot, connect so as to which the rotary column 12 departs from the solderless wrapped connection disk 3
Connect, now, the pressing lever 412 triggers the pressing device 413, the sander 32 is powered, and utilizes the sander 32
Workpiece is polished；
After polishing, start the second power set 4, second power set 4 can drive the portable plate 41 remote described
The direction of second power set 4 is slided, and the direction of remote second power set 4 of portable plate 41 is slided, and can be made described
Sheet rubber 55 is protruding and is touched with the inwall of the hole slot 30, so as to make the rotary column 12 and the solderless wrapped connection disk 3 again
Frictional connection, the pressing lever 412 remote pressing device 413 again, now stops second power set 4 and reversely opens
First power set 11 are moved, first power set 11 can drive the rotary column 12 to rotate backward, the rotary column
12 can drive the solderless wrapped connection disk 3 to rotate backward and carry out take-up operation to the Electricity Federation line 31, when the sander 32 is received
After being reduced to the port slot, stop first power set 11 and again the second power set 4 described in reverse starting, described the
Two power set 4 drive the portable plate 41 to be slided close to second power set 4, and a block 52 of leading is in the return unit
The sheet rubber 55 is set to be fully retracted in second loose slot to inner side top pressure in the presence of 53, so as to the rotary column
12 are disconnected with the solderless wrapped connection disk 3.
The beneficial effects of the invention are as follows：Because apparatus of the present invention are in original state, Electricity Federation line is furled on solderless wrapped connection disk,
And sander is contracted in port slot, therefore, Electricity Federation line can be avoided to set everywhere, be advantageous to the protection to Electricity Federation line, can extended
The generation of electric shock accidents is prevented while the service life of Electricity Federation line；
During polishing, some sander can be randomly choosed, because apparatus of the present invention are provided with multiple sanders, therefore, can avoid pacifying
More polishing facilities are filled, floor space can be reduced；
During take-up and unwrapping wire is carried out to solderless wrapped connection disk, can all sander be set temporarily to power off, so as in take-up and unwrapping wire
During power outage security, moreover, when unwrapping wire is to correct position, only sheet rubber is fully retracted in the second loose slot,
Make rotary column just to make sander be powered after being connected with solderless wrapped connection disk detachment to polish to workpiece, so as to not influence other polishings
The use of machine；
Apparatus of the present invention are simple in construction, stable, safe.
Embodiment described above, only inventing, but invent protection domain be not limited thereto, it is any without
The change or replacement that creative work is expected are crossed, should all be covered within the protection domain of invention.Therefore, the protection domain of invention
It should be determined by the scope of protection defined in the claims.
Claims (7)
- A kind of 1. improved hand-held sanding apparatus, it is characterised in that：Including installs case and multiple solderless wrapped connection disks, the solderless wrapped connection disk Place placed in the middle is provided with hole slot, and cavity is provided with the installs case, the first power is installed with the cavity bottom wall Device, first power set are connected with rotary column, and the rotary column upper end penetrates the hole slot and is installed in rotation on described In cavity roof, temperature control device, the solderless wrapped connection disk upper and lower ends relative set are provided with the installs case above the cavity There is connector loop, the anchor ring groove being engaged with the connector loop is provided with the cavity end wall, the connector loop is rotatably installed in In the anchor ring groove, port slot is provided with the outside of the installs case, solderless wrapped connection Electricity Federation line on the solderless wrapped connection disk, and the Electricity Federation line tail The tip is fixedly connected with sander, and the sander is arranged on the port slot, be vertically disposed with the rotary column it is multiple with it is described The keyholed back plate device that solderless wrapped connection disk is engaged, the keyholed back plate device include being fixedly mounted on the second power set in the rotary column and Relative set is movably installed with activity in first loose slot in the first loose slot of the second power set upper and lower ends Plate, screw hole is provided with the portable plate, stud, the stud and second power are connected with the screw hole Device connects, and also left and right is correspondingly provided with the second loose slot of the first loose slot described in communications and liaison in the rotary column, and described second lives It is movably installed with push arm in dynamic groove, the installs case bottom is fixed with fixed plate, on described four corners of fixed plate simultaneously Provided with hole, described hole is connected with fixing bolt.
- A kind of 2. improved hand-held sanding apparatus as claimed in claim 1, it is characterised in that：The portable plate closes on described The end face of second power set is fixedly installed convex jacking block, and the convex jacking block is movably arranged on prolonging for the first loose slot both sides Open up in groove, the extended slot, which is closed in the end wall of second power set, is provided with fitting recess, fixed peace in the fitting recess Equipped with the pressing device with the sander Electricity Federation, the end faces of the convex jacking block towards second power set be installed with The pressing lever that the pressing device is engaged.
- A kind of 3. improved hand-held sanding apparatus as claimed in claim 1, it is characterised in that：The portable plate is remote described The end face of second power set is provided with first and tiltedly supports face, and the push arm medial extremity is provided with tiltedly supports face matching with described first Second closed tiltedly supports face, and position guiding groove, the push arm upper and lower ends face are provided with the second loose slot upper and lower ends wall It is correspondingly provided with and leads a block, a block of leading is movably arranged in the position guiding groove, and is installed with the position guiding groove multiple Position part, the return unit touch with a block of leading.
- A kind of 4. improved hand-held sanding apparatus as claimed in claim 1, it is characterised in that：The connector loop lower end installation There is iron shot, the iron shot touches with the anchor ring groove bottom wall.
- A kind of 5. improved hand-held sanding apparatus as claimed in claim 1, it is characterised in that：The aperture of the hole slot is more than The external diameter of the rotary column.
- A kind of 6. improved hand-held sanding apparatus as claimed in claim 1, it is characterised in that：The push arm outboard end is consolidated Surely sheet rubber is provided with, the sheet rubber is provided with the radian same with the hole slot inwall.
- A kind of 7. improved hand-held sanding apparatus as claimed in claim 1, it is characterised in that：The temperature control device includes Refrigerator and left and right relative set the leading in the refrigerator both sides being arranged in the installs case above the cavity Tracheae, described airway tube one end are fixedly connected with the refrigerator, and the other end is set with the cavity top communications and liaison, the cavity Bottom right side is provided with the logical siphunculus for passing through wall body on the right side of the installs case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380315.7A CN107877317A (en) | 2017-05-25 | 2017-05-25 | A kind of improved hand-held sanding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380315.7A CN107877317A (en) | 2017-05-25 | 2017-05-25 | A kind of improved hand-held sanding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107877317A true CN107877317A (en) | 2018-04-06 |
Family
ID=61780520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710380315.7A Pending CN107877317A (en) | 2017-05-25 | 2017-05-25 | A kind of improved hand-held sanding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107877317A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4897512A (en) * | 1988-04-18 | 1990-01-30 | Johnston Bobby J | Extension cord apparatus |
| CN1449985A (en) * | 2002-04-08 | 2003-10-22 | 华为技术有限公司 | Cable winding method and cable winder |
| CN201801231U (en) * | 2010-07-30 | 2011-04-20 | 深圳市翠涛自动化设备有限公司 | Automatic setting out device for welding wire machine |
| CN203922282U (en) * | 2014-06-09 | 2014-11-05 | 国家电网公司 | A kind of automatic wire-collecting machine |
| CN205057278U (en) * | 2015-10-30 | 2016-03-02 | 刘文华 | Welding set with automatically, receive and release line function |
| CN205555934U (en) * | 2016-04-28 | 2016-09-07 | 宁波华翔东方电力机具有限公司 | Full -automatic electronic hank grinds |
-
2017
- 2017-05-25 CN CN201710380315.7A patent/CN107877317A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4897512A (en) * | 1988-04-18 | 1990-01-30 | Johnston Bobby J | Extension cord apparatus |
| CN1449985A (en) * | 2002-04-08 | 2003-10-22 | 华为技术有限公司 | Cable winding method and cable winder |
| CN201801231U (en) * | 2010-07-30 | 2011-04-20 | 深圳市翠涛自动化设备有限公司 | Automatic setting out device for welding wire machine |
| CN203922282U (en) * | 2014-06-09 | 2014-11-05 | 国家电网公司 | A kind of automatic wire-collecting machine |
| CN205057278U (en) * | 2015-10-30 | 2016-03-02 | 刘文华 | Welding set with automatically, receive and release line function |
| CN205555934U (en) * | 2016-04-28 | 2016-09-07 | 宁波华翔东方电力机具有限公司 | Full -automatic electronic hank grinds |
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Application publication date: 20180406 |