CN202846312U - Abrasive belt tensioning apparatus for belt grinder - Google Patents
Abrasive belt tensioning apparatus for belt grinder Download PDFInfo
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- CN202846312U CN202846312U CN 201220453084 CN201220453084U CN202846312U CN 202846312 U CN202846312 U CN 202846312U CN 201220453084 CN201220453084 CN 201220453084 CN 201220453084 U CN201220453084 U CN 201220453084U CN 202846312 U CN202846312 U CN 202846312U
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- motor
- abrasive band
- body cradle
- tensioning apparatus
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Abstract
The utility model provides an abrasive belt tensioning apparatus for a belt grinder, and belongs to the working technical field. The abrasive belt tensioning apparatus solves the problem that conventional abrasive belt tensioning apparatuses are complex in structure, and high in production cost. The abrasive belt tensioning apparatus comprises a hinge rack situated under a motor housing which is fixed to the hinge rack. A motor shaft is fixedly connected with a driving wheel, and edge of the hinge rack at one side of the motor shaft is hinged to a frame. A blocking member is fixed on the frame for limiting the downward swing travel of the edge of the hinge rack at the other side of the motor shaft. A driving wheel is employed for tensioning an abrasive belt, which overcomes the technical problems of the prior art which employs a tensioning wheel or a driven wheel for tensioning the abrasive belt. The abrasive belt tensioning apparatus is simple in structure and simplifies the structure of a belt grinder.
Description
Technical field
The utility model belongs to the operation technique field, relates to the abrasive band tensioning apparatus of a kind of belt sander, particularly a kind of belt sander.
Background technology
Belt sander is for the grinding work piece outer surface, improves the device of workpiece fineness.Adopt belt sander processing to have the high and high advantage of product percent of pass of production efficiency; Be widely used in thus every field, especially in five metals, hot-water heating and the furniture industry.
The kind of belt sander is more, such as a kind of flat grinding abrasive belt polishing machine [application number: 200610118511.9 that proposes before the applicant; Granted publication number: CN1962191B], comprise a frame with workbench, frame is provided with the rotating shaft that links to each other with actuating unit, be connected with driving wheel in the rotating shaft, also be provided with driven pulley and regulating wheel on the frame, be socketed with the abrasive band on driving wheel, driven pulley and the regulating wheel, above-mentioned workbench is close to the abrasive band and be arranged in parallel with the abrasive band, frame is provided with column, and above-mentioned regulating wheel is located at the column place, and is provided with the tensioning apparatus that regulating wheel is moved between regulating wheel and column.When utilizing this polishing machine grinding work piece, workpiece is fixed on the workbench, and face to be ground is necessary for horizontal plane, finishes the feeding of workpiece ground by self-powered platform.This flat grinding abrasive belt polishing machine moves regulating wheel and carries out tensioning to the abrasive band by handling tensioning apparatus.
Tape-alternation mechanism [the application number: 01254790.5 of a kind of abrasive band plate glazing calender that and for example proposes before the applicant; Granted publication number: CN2505230Y], the abrasive band plate glazing calender is comprised of body, motor, driving wheel and driven pulley, and driving wheel and driven pulley all are fixed on the body and all are positioned on the same level face.When utilizing this polishing machine grinding work piece, offhand is pressed in the surface in abrasive band from the top down, finishes simultaneously thus fixing the and feeding to workpiece.This abrasive band plate glazing calender is located the tensioning that realizes the abrasive band by mobile driven pulley and by the effect of gear, tooth bar and spring to driven pulley.
A kind of vertical abrasive belt grinder [application number: 00259206.1 of the applicant of TaiWan, China design and for example; Granted publication number: CN2449871Y], above board, establish the object disposing platform of an adjustable lifting, establish again a vertical type shelf in board one side, set at the vertical type shelf epimere and to establish wheel, establish wheel on the vertical type shelf top, establish wheel by two and establish one group of abrasive band, and coat isolation and manifest dewiness below only making the abrasive band with a protecting box, establish one on the protecting box top and take over to be connected dust-collecting equipment, lower the belt pulley of establishing the linking of wheel one end cooperates a driving belt to link the motor of board inside.When utilizing this vertical abrasive belt grinder grinding work piece, workpiece is fixed on the object disposing platform, realizes the feeding of workpiece by controlling object disposing platform; This grinder is to utilize the abrasive band that appears shape to carry out grinding.This vertical abrasive belt grinder also is by mobile driven pulley and realizes the tensioning in abrasive band under the effect of spring.
Hence one can see that, the abrasive band tensioning apparatus of the belt sander of prior art by arrange regulating wheel and to regulating wheel move control or by driven pulley is moved control; The opposition that produces by external force when regulating wheel or driven pulley are moved control realizes the abrasive band tensioning to reach stress balance.Be that the abrasive band tensioning apparatus then needs external parts and a force transferring structure that can produce active force, belt sander and abrasive band tensioning apparatus all exist complex structure thus, the problems such as production cost increase.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of abrasive band tensioning apparatus of belt sander simple in structure, utilizes this abrasive band tensioning apparatus can solve the baroque problem of belt sander.
The purpose of this utility model can realize by following technical proposal: a kind of abrasive band tensioning apparatus of belt sander, and belt sander comprises frame, motor and abrasive band, is provided with at least a driven pulley and a driving wheel in the annular ring in described abrasive band; Described driven pulley is positioned on the frame; It is characterized in that this abrasive band tensioning apparatus comprises body cradle, described body cradle is positioned at the electric machine casing below, and described electric machine casing is fixed on the body cradle, and described machine shaft is fixedly connected with driving wheel; Edge and frame that described body cradle is positioned at machine shaft one side are hinged; Be fixed with on the described frame be used to the block piece that limits described body cradle and be positioned at the downward oscillating stroke in edge of machine shaft opposite side.
The abrasive band of this belt sander idle running or when static, body cradle is under motor gravity, driving wheel gravity and self gravitation effect, the edge that body cradle is positioned at the machine shaft opposite side has the trend that moves downward, until be resisted against on the block piece, realizes the static tensioning in abrasive band.
During this belt sander grinding work piece, workpiece compressing abrasive band forces the abrasive band crooked, and then the edge that forces body cradle to be positioned at the machine shaft opposite side overcomes above-mentioned gravity and moves up; Make pitch smaller between driving wheel and the driven pulley, it is disconnected to avoid the abrasive band to open; The edge that body cradle is positioned at the machine shaft opposite side after removing workpiece is resisted against again on the block piece under above-mentioned Action of Gravity Field; Realize thus the dynamic tension in abrasive band.
When need were changed the abrasive band, upwards lifted the edge that can directly body cradle be positioned at the machine shaft opposite side, shortens spacing between driving wheel and the driven pulley, makes the abrasive band be in relaxed state, and then at an easy rate the old sand band is taken off, and new abrasive band is loaded onto.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, described body cradle is provided with the end that can make described body cradle be positioned at the machine shaft opposite side all the time and has the spring that is resisted against movement tendency on the block piece between the end of machine shaft opposite side and frame.Spring is set be used for increases the downward active force in end that body cradle is positioned at the machine shaft opposite side, to reach stress balance, stress balance during grinding work piece especially.Spring produces downward active force and increases with hypotelorism between driving wheel and the driven pulley.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, the axle center of described machine shaft is positioned on the horizontal plane all the time.This structure can guarantee the degree of balance between driving wheel and the driven pulley, improves the stability of abrasive band operation.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, the edge that described body cradle is positioned at machine shaft one side is fixed with one and is horizontally disposed with jointed shaft, and the two ends of described jointed shaft all are located by connecting by bearing and bearing block and frame.Body cradle swings around jointed shaft, owing to jointed shaft is horizontally disposed with, so the axle center of machine shaft is positioned on the horizontal plane all the time in the time of can guaranteeing the body cradle swing.Jointed shaft links to each other with frame with bearing block by bearing, is connected firmly, rotates flexible and stable advantage so have.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, when described body cradle was positioned at the edge of machine shaft opposite side and block piece and leans, the edge that described body cradle is positioned at the machine shaft opposite side was lower than the edge that body cradle is positioned at machine shaft one side.This structure can improve body cradle and be positioned at the downward active force in edge of machine shaft opposite side and improve the edge that body cradle is positioned at the machine shaft opposite side and move downward the trend ability.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, when described body cradle was positioned at the edge of machine shaft opposite side and block piece and leans, it was 8 °～20 ° that described body cradle is inclined relative to horizontal angle.Can select any numerical value in 8 °～20 ° according to different situations.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, the housing of described motor is fixed on the middle part of body cradle or is positioned at the edge of machine shaft opposite side near described body cradle.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, the end that described body cradle is positioned at the machine shaft opposite side is fixed with handle.People are applied to power on the handle when changing the abrasive band, to improve the comfortableness of people's application of force.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, the end that described body cradle is positioned at the machine shaft opposite side is fixed with one against body, and described below against body is provided with a cam, the wheel face of described cam with lean against body; Be positioned with a control lever shaft on the described frame, an end of described control lever shaft is fixedly connected with cam, and the other end is fixed with pedal or hand lever.People are by trampling pedal or pulling hand lever when changing the abrasive band, make the concentric wheel face of cam and lean against body gradually to the eccentric wheel face of cam and the transition that leans against body, until the apical margin of the eccentric wheel face of cam with lean against body, this moment, body cradle was positioned at the edge disengaging block piece of machine shaft opposite side, and was in self-locking state; Be convenient for people to thus change the abrasive band.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, the sidepiece of described control lever shaft is provided with one with respect to the vertically disposed extension spring connecting rod of control lever shaft, one end of described extension spring connecting rod is fixedly connected with control stick, has with the extension spring of the movement tendency that leans against body by the nebenkern mask that can make all the time cam between the other end and the frame to be connected.
In the tensioning apparatus of the abrasive band of above-mentioned belt sander, described frame comprises that being positioned at the bottom is the casing of case shape and is connected in the support bar that vertically arranges on the box top, described driving wheel and motor all are positioned at casing, and described driven pulley is positioned at outside the casing and with post upper section and is located by connecting; Have on the end face of described casing for the abrasive band wear and and enter the dust collecting opening of stepping down in the casing for the material that grinding produces; Have the inlet scoop that can link with air suction mechanism on one sidewall of casing.
In time in the past, in belt sander manufacturing technology field, the technical staff generally believes and adopts initiatively tensioning meeting to cause that drive mechanism becomes more complicated between actuator and the driving wheel, the driving wheel location is more difficult, cause the abrasive band tensile force not or abrasive band operation section problem stably, this causes people not go to consider otherwise possibility, hinders people to the research and development of this technical field.Compared with prior art, the abrasive band tensioning apparatus of this belt sander adopts driving wheel tensioning abrasive band, has overcome available technology adopting regulating wheel or driven pulley and has carried out the tensioning abrasive band, and adopted regulating wheel or driven pulley to carry out the technical problem that the tensioning abrasive band exists.
The abrasive band tensioning apparatus of this belt sander has effectively utilized the motor that must possess in the belt sander and the weight of driving wheel; This abrasive band tensioning apparatus only comprises the syndeton of body cradle, block piece and body cradle and block piece and frame, and this abrasive band tensioning apparatus has advantage simple in structure thus, and makes the simpler advantage of belt sander structure.
This belt sander can also be collected into the materials such as dust, powder, smog and the grains of sand that grinding produces in the casing, and then makes things convenient for post processing, avoids contaminated environment and affects the healthy of operator.
Description of drawings
Fig. 1 is the perspective view of the abrasive band tensioning apparatus of this belt sander.
Fig. 2 be among Fig. 1 partial structurtes analyse and observe perspective view.
Among the figure, 1, frame; 1a, casing; 1b, support bar; 1c, bracing frame; 1d, inlet scoop; 2, motor; 3, abrasive band; 4, driven pulley; 5, driving wheel; 6, body cradle; 7, block piece; 8, jointed shaft; 9, bearing; 10, bearing block; 11, spring; 12, extension spring; 13, cam; 14, control lever shaft.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As depicted in figs. 1 and 2, this belt sander comprises frame 1, motor 2, abrasive band 3, driven pulley 4 and driving wheel 5.The driven pulley 4 that present embodiment provides and the quantity of driving wheel 5 are one, and driven pulley 4 and driving wheel 5 all are positioned at annular ring and the energy tensioning abrasive band 3 in abrasive band 3.In the annular ring according to different belt sander abrasive bands 3 supporting roller can also be set.
Frame 1 comprises that being positioned at the bottom is the casing 1a of case shape and is connected on the casing 1a end face support bar 1b that vertically arranges, have on the end face of casing 1a for abrasive band 3 wear and and enter the dust collecting opening of stepping down in the casing 1a for the material that grinding produces; Have the inlet scoop 1d that can link with air suction mechanism on the sidewall of casing 1a.
Driving wheel 5 and motor 2 all are positioned at casing 1a, and driven pulley 4 is positioned at outside the casing 1a and with support bar 1b upper end and is located by connecting.
The abrasive band tensioning apparatus of this belt sander also is positioned at the casing 1a of frame 1.The abrasive band tensioning apparatus of this belt sander comprises body cradle 6 and block piece 7.
Frame 1 comprises also and is positioned at the bracing frame 1c that casing 1a is fixedly connected with casing 1a that body cradle 6 is positioned at the edge of motor 2 rotating shafts one side and the bracing frame 1c of frame 1 is hinged.The edge that body cradle 6 is positioned at motor 2 rotating shafts one side is fixed with one and is horizontally disposed with jointed shaft 8, and the two ends of jointed shaft 8 all are positioned with bearing 9, and the outer ring of bearing 9 is fixed with bearing block 10, and bearing block 10 is fixed on the bracing frame 1c of frame 1.
It is tabular that block piece 7 is bar shaped, and block piece 7 is fixed by welding on the bracing frame 1c of frame 1, and block piece 7 is used for the downward oscillating stroke in edge that restriction body cradle 6 is positioned at motor 2 rotating shaft opposite sides.
According to actual conditions, the housing of motor 2 can be fixed on body cradle 6 is positioned at motor 2 rotating shaft opposite sides near body cradle 6 place, end.This structure is fixed on body cradle 6 middle parts with motor 2 housings and compares, and can improve body cradle 6 and be positioned at the downward active force in edge of motor 2 rotating shaft opposite sides and improve the edge that body cradle 6 is positioned at motor 2 rotating shaft opposite sides and move downward the trend ability.
Be positioned at the downward active force in edge of motor 2 rotating shaft opposite sides and improve the edge that body cradle 6 is positioned at motor 2 rotating shaft opposite sides and move downward the trend ability in order to improve body cradle 6, can also adopt following scheme to replace or implement simultaneously: body cradle 6 is provided with the end that can make all the time described body cradle 6 be positioned at motor 2 rotating shaft opposite sides and has the spring 11 that is resisted against movement tendency on the block piece 7 between the end of motor 2 rotating shaft opposite sides and frame 1.The spring 11 that present embodiment provides is extension spring, and an end of extension spring is connected with the bracing frame 1c of frame 1, and the other end is connected with body cradle 6.End according to the actual condition extension spring also can be connected with block piece 7.
When body cradle 6 was positioned at the edge of motor 2 rotating shaft opposite sides and block piece 7 and leans, the edge that body cradle 6 is positioned at motor 2 rotating shaft opposite sides was lower than the edge that body cradle 6 is positioned at motor 2 rotating shafts one side.It is 8 °～20 ° that body cradle 6 is inclined relative to horizontal angle.The angle that present embodiment provides is 12 °, can select any numerical value in 8 °～20 ° according to different situations.
Abrasive band 3 idle running of this belt sander or when static, body cradle 6 is under motor 2 gravity, driving wheel 5 gravity and self gravitation effect, the edge that body cradle 6 is positioned at motor 2 rotating shaft opposite sides is resisted against on the block piece 7, realizes the static tensioning in abrasive band 3.During this belt sander grinding work piece, workpiece compressing abrasive band 3 force abrasive band 3 bendings, and then the edge that forces body cradle 6 to be positioned at motor 2 rotating shaft opposite sides overcomes gravity and/or spring 11 elastic force move up; Make pitch smaller between driving wheel 5 and the driven pulley 4, avoid 3 in abrasive band disconnected; The edge that body cradle 6 is positioned at motor 2 rotating shaft opposite sides after removing workpiece is resisted against again on the block piece 7 under gravity and/or spring 11 elastic force effects; Realize thus the dynamic tension in abrasive band 3.When need were changed abrasive band 3, upwards lifted the edge that can directly body cradle 6 be positioned at motor 2 rotating shaft opposite sides, shortens the spacing between driving wheel 5 and the driven pulley 4, makes abrasive band 3 be in relaxed state, and then at an easy rate old sand band 3 is taken off, and new abrasive band 3 is loaded onto.
In order to be convenient for changing abrasive band 3, can be fixed with handle in the end that body cradle 6 is positioned at motor 2 rotating shaft opposite sides.Also but body cradle 6 end that is positioned at motor 2 rotating shaft opposite sides is fixed with one against body, is provided with a cam 13 against the below of body, the wheel face of cam 13 with lean against body; Be positioned with a control lever shaft 14 that arranges with motor 2 shaft parallels on the frame 1, an end of control lever shaft 14 is fixedly connected with cam 13, and the other end passes casing 1a and is fixed with pedal or hand lever.When body cradle 6 is positioned on the edge of motor 2 rotating shaft opposite sides and the block piece 7, cam 13 concentric wheel faces with lean against body.The sidepiece of control lever shaft 14 is provided with one with respect to control lever shaft 14 vertically disposed extension spring connecting rods, one end of extension spring connecting rod is fixedly connected with control stick, has with the extension spring 12 of the movement tendency that leans against body by the nebenkern mask that can make all the time cam 13 between the other end and the frame 1 to be connected.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (10)
1. the abrasive band tensioning apparatus of a belt sander, belt sander comprises frame (1), motor (2) and abrasive band (3), is provided with at least a driven pulley (4) and a driving wheel (5) in the annular ring of described abrasive band (3); Described driven pulley (4) is positioned on the frame (1); It is characterized in that, this abrasive band tensioning apparatus comprises body cradle (6), described body cradle (6) is positioned at motor (2) housing below, and described motor (2) housing is fixed on the body cradle (6), and described motor (2) rotating shaft is fixedly connected with driving wheel (5); Edge and frame (1) that described body cradle (6) is positioned at motor (2) rotating shaft one side are hinged; Be fixed with on the described frame (1) be used to the block piece (7) that limits described body cradle (6) and be positioned at the downward oscillating stroke in edge of motor (2) rotating shaft opposite side.
2. the abrasive band tensioning apparatus of belt sander according to claim 1, it is characterized in that described body cradle (6) is positioned at and is provided with the end that can make all the time described body cradle (6) be positioned at motor (2) rotating shaft opposite side between the end of motor (2) rotating shaft opposite side and the frame (1) and has the spring (11) that is resisted against the upper movement tendency of block piece (7).
3. the abrasive band tensioning apparatus of belt sander according to claim 1 is characterized in that, the axle center of described motor (2) rotating shaft is positioned on the horizontal plane all the time.
4. the abrasive band tensioning apparatus of belt sander according to claim 3, it is characterized in that, the edge that described body cradle (6) is positioned at motor (2) rotating shaft one side is fixed with one and is horizontally disposed with jointed shaft (8), and the two ends of described jointed shaft (8) all are located by connecting with frame (1) by bearing (9) and bearing block (10).
5. the abrasive band tensioning apparatus of the described belt sander of any one in 4 according to claim 1, it is characterized in that, described body cradle (6) is positioned at the edge of motor (2) rotating shaft opposite side and block piece (7) when leaning, and the edge that described body cradle (6) is positioned at motor (2) rotating shaft opposite side is lower than the edge that body cradle (6) is positioned at motor (2) rotating shaft one side.
6. the abrasive band tensioning apparatus of belt sander according to claim 5, it is characterized in that, described body cradle (6) is positioned at the edge of motor (2) rotating shaft opposite side and block piece (7) when leaning, and it is 8 °～20 ° that described body cradle (6) is inclined relative to horizontal angle.
7. the abrasive band tensioning apparatus of the described belt sander of any one in 4 according to claim 1, it is characterized in that the housing of described motor (2) is fixed on the middle part of body cradle (6) or is positioned at the edge of motor (2) rotating shaft opposite side near described body cradle (6).
8. the abrasive band tensioning apparatus of the described belt sander of any one in 4 according to claim 1, it is characterized in that, the end that described body cradle (6) is positioned at motor (2) rotating shaft opposite side is fixed with one against body, described below against body is provided with a cam (13), the wheel face of described cam (13) with lean against body; Be positioned with a control lever shaft (14) on the described frame (1), an end of described control lever shaft (14) is fixedly connected with cam (13), and the other end is fixed with pedal or hand lever.
9. the abrasive band tensioning apparatus of belt sander according to claim 8, it is characterized in that, the sidepiece of described control lever shaft (14) is provided with one with respect to the vertically disposed extension spring of control lever shaft (14) (12) connecting rod, one end of described extension spring (12) connecting rod is fixedly connected with control stick, has with the extension spring (12) of the movement tendency that leans against body by the nebenkern mask that can make all the time cam (13) between the other end and the frame (1) to be connected.
10. the abrasive band tensioning apparatus of the described belt sander of any one in 4 according to claim 1, it is characterized in that, described frame (1) comprises that being positioned at the bottom is the casing (1a) of case shape and is connected in the support bar (1b) that vertically arranges on casing (1a) end face, described driving wheel (5) and motor (2) all are positioned at casing (1a), and described driven pulley (4) is positioned at outside the casing (1a) and with support bar (1b) upper end and is located by connecting; Have on the end face of described casing (1a) for abrasive band (3) wear and and enter the dust collecting opening of stepping down in the casing (1a) for the material that grinding produces; Have the inlet scoop (1d) that can link with air suction mechanism on one sidewall of casing (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453084 CN202846312U (en) | 2012-09-07 | 2012-09-07 | Abrasive belt tensioning apparatus for belt grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453084 CN202846312U (en) | 2012-09-07 | 2012-09-07 | Abrasive belt tensioning apparatus for belt grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202846312U true CN202846312U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220453084 Expired - Lifetime CN202846312U (en) | 2012-09-07 | 2012-09-07 | Abrasive belt tensioning apparatus for belt grinder |
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| Country | Link |
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| CN (1) | CN202846312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814717A (en) * | 2012-09-07 | 2012-12-12 | 陈美青 | Abrasive belt tensioning device of abrasive belt machine |
-
2012
- 2012-09-07 CN CN 201220453084 patent/CN202846312U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814717A (en) * | 2012-09-07 | 2012-12-12 | 陈美青 | Abrasive belt tensioning device of abrasive belt machine |
| CN102814717B (en) * | 2012-09-07 | 2015-04-29 | 陈美青 | Abrasive belt tensioning device of abrasive belt machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20150429 |