CN203956657U - A kind of double face abrading machine - Google Patents
A kind of double face abrading machine Download PDFInfo
- Publication number
- CN203956657U CN203956657U CN201420399632.5U CN201420399632U CN203956657U CN 203956657 U CN203956657 U CN 203956657U CN 201420399632 U CN201420399632 U CN 201420399632U CN 203956657 U CN203956657 U CN 203956657U
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- CN
- China
- Prior art keywords
- workbench
- double face
- push rod
- abrading machine
- clamp
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of double face abrading machine, comprise support, workpiece polishing mechanism, feed mechanism, workpiece polishing mechanism carried out to the compensation mechanism of bit shift compensation, workpiece polishing mechanism comprises can be around emery wheel polishing for of Pivot Point Center line rotation, polishing drive unit for driving emery wheel to rotate, workpiece polishing mechanism has two, and feed mechanism comprises the clamp mechanism on workbench of being located at that workbench on support, at least two edges slide perpendicular to feed direction of being located at sliding along feed direction.Due to the utilization of technique scheme, the utility model compared with prior art has following advantages: a kind of double face abrading machine of the utility model, by organizing being located on workbench that clamp mechanism is arranged in order more, in the time of buffing work-piece, multiple workpiece are sent into workpiece polishing mechanism by feed mechanism in turn and are polished, significantly improve operating efficiency, simultaneously by by external the workbench at clamp mechanism place, avoided chip that workpiece polishing mechanism drops in the time of buffing work-piece on the workbench impact in service life.
Description
Technical field
the utility model relates to a kind of double face abrading machine.
Background technology
existing double face abrading machine is in the time of grinding apparatus, on this procedure of feeding, can only carry out manual operation, the double face abrading machine of some minorities can carry out full automatic manufacturing procedure by feed gearing, and only having single clamping, these feed gearings treat the fixture of buffing work-piece, adding man-hour, can not reach the requirement that high efficiency is produced, simultaneously, because work bench with adjustable holder is placed in workpiece polishing mechanism below, the scrap producing when polishing can enter work bench with adjustable holder, its normal work is exerted an influence, and affect its service life, existing double face abrading machine generally adopts grease lubrication to the turning cylinder that drives emery wheel to rotate, and cannot adopt the better thin oil lubricant of lubricant effect.
Utility model content
the purpose of this utility model be to provide a kind of workbench external, have many group clamp mechanisms and more the processing of high efficiency and time conservation treat the double face abrading machine of milling tools.
for achieving the above object, the technical solution adopted in the utility model is:
a kind of double face abrading machine, comprise support, described double face abrading machine comprises is located at two groups of workpiece polishing mechanisms for buffing work-piece on described support, described in every group, workpiece polishing mechanism includes the polishing emery wheel that can rotate around Pivot Point Center line, for driving the polishing drive unit of described emery wheel rotation, two adjacent settings of described emery wheel in workpiece polishing mechanism described in two groups, the polishing space of described workpiece is formed between two described emery wheels polishing, described double face abrading machine also comprises for described workpiece being sent into the feed mechanism in described polishing space, described feed mechanism comprises and can be located at slidably the workbench on described support along feed direction, can be along at least two group clamp mechanisms of being located at slidably perpendicular to described feed direction on described workbench, described in every group, clamp mechanism includes the slide of being located at slidably on described workbench, be installed on described slide for clamping the fixture for the treatment of buffing work-piece, arrange successively perpendicular to described feed direction in all described clamp mechanisms edge on described workbench, on described workbench, be also provided with for driving first driving mechanism of all described clamp mechanisms towards described workbench one Slideslip, for the second driving mechanism that drives all described clamp mechanisms to slide towards described workbench opposite side, described feed mechanism also comprises to be located on described workbench for described clamp mechanism is pressed on to the clamp mechanism on described workbench along feed direction, for the 3rd driving mechanism that drives described workbench to slide along feed direction.
preferably, described in every group, workpiece polishing mechanism includes along being located at slidably the sliding seat on described support perpendicular to described feed direction, turning cylinder on the output shaft that described polishing drive unit comprises the drive motors that is fixedly arranged on described sliding seat, be connected to transmission described drive motors, described emery wheel is fixedly mounted on described turning cylinder.
more preferably, on described sliding seat, be fixed with seal box, described turning cylinder is along it axially through described seal box, and described seal box joins by rotating seal ring and the described turning cylinder at two ends, the axial line along continuous straight runs distribution of described turning cylinder and perpendicular to described feed direction.
more preferably, described double face abrading machine also comprises the compensation mechanism for the distance between two described emery wheels is compensated, described compensation mechanism comprises the servomotor of being located on described support, be fixedly connected on the worm screw on described servomotor output, the worm gear being meshed with described worm screw, the screw mandrel that can move along self length bearing of trend along with the rotation of described worm gear with described worm wheel, the axial line along continuous straight runs of described screw mandrel distributes and perpendicular to described feed direction, on described screw mandrel, be installed with connector, described screw mandrel is fixedly connected by described connector and described sliding seat, corresponding, described compensation mechanism has two.
preferably, described clamp mechanism has two, and described workbench is provided with described slide is carried out to the first spacing locating part and the second locating part, and described the first locating part and described the second locating part distribute perpendicular to feed direction.
more preferably, the distance between described the first locating part and described the second locating part is three times perpendicular to described feed direction length of described slide, and described the first locating part and described the second locating part have at least a pair of.
preferably, described the first driving mechanism is the first hydraulic cylinder, described the first hydraulic cylinder comprises the first cylinder body being installed on described workbench, can relatively described the first cylinder body flexible the first push rod vertically, described the second driving mechanism is the second hydraulic cylinder, described the second hydraulic cylinder comprises the second cylinder body being installed on described workbench, can relatively described the second cylinder body flexible the second push rod vertically, described the first push rod and the equal along continuous straight runs of described the second push rod distribute and the setting of coaxial inner conductor.
preferably, described the 3rd driving mechanism is the 3rd hydraulic cylinder, described the 3rd hydraulic cylinder comprises the 3rd cylinder body being installed on described support, can relatively described the 3rd cylinder body flexible the 3rd push rod vertically, described the 3rd push rod along continuous straight runs distributes, and the external part of described the 3rd push rod is connected on described workbench.
preferably, described clamp mechanism is the 4th hydraulic cylinder, described the 4th hydraulic cylinder comprises the 4th cylinder body being installed on described workbench, can relatively described the 4th cylinder body flexible the 4th push rod vertically, described the 4th push rod along continuous straight runs distributes, and is also provided with the clamp for clamping described slide on the external part of described the 4th push rod.
due to the utilization of technique scheme, the utility model compared with prior art has following advantages: a kind of double face abrading machine of the utility model, by organizing being located on workbench that clamp mechanism is arranged in order more, in the time of buffing work-piece, multiple workpiece are sent into workpiece polishing mechanism by feed mechanism in turn and are polished, significantly improve operating efficiency, simultaneously by by external the workbench at clamp mechanism place, avoided chip that workpiece polishing mechanism drops in the time of buffing work-piece on the workbench impact in service life.
Brief description of the drawings
accompanying drawing 1 is structural representation of the present utility model;
accompanying drawing 2 is clamp mechanism schematic diagram of the present utility model;
accompanying drawing 3 is workpiece polishing mechanism cutaway view of the present utility model;
accompanying drawing 4 is compensation mechanism cutaway view of the present utility model.
wherein: 1, support; 2, feed mechanism; 21, workbench; 22, clamp mechanism; 221, slide; 222, fixture; 23, the first locating part; 24, the second locating part; 25, the first driving mechanism 251, the first cylinder body; 252, the first push rod; 26, the second driving mechanism; 261, the second cylinder body; 27, the 3rd push rod; 28, clamp mechanism; 281, the 4th cylinder body; 282, the 4th push rod; 283, clamp; 3, workpiece polishing mechanism; 31, drive motors; 32, turning cylinder; 33, emery wheel; 4, compensation mechanism; 41, servomotor; 42, worm screw; 43, worm gear; 44, screw mandrel; 45, connector; 5, seal box; 51, rotating seal ring.
Detailed description of the invention
below in conjunction with accompanying drawing, the technical solution of the utility model is further elaborated.
above-mentioned a kind of double face abrading machine, comprises support 1, is located at the workpiece polishing mechanism 3 for buffing work-piece on described support 1, for described workpiece being sent into the feed mechanism 2 of described workpiece polishing mechanism 3.
this workpiece polishing mechanism 3 comprises the drive motors 31 of being located on support 1, turning cylinder 32 on the output shaft that is connected to this drive motors 31 of one end transmission, be fixedly arranged on the emery wheel 33 on turning cylinder 32 other ends, this workpiece polishing mechanism 3 has two, (left and right directions of saying is here with reference to figure 1 in the left and right of being located at support 1 of two workpiece polishing mechanism 3 symmetries, the direction of stretching out of the first push rod 252 is right, the retracted orientation of the first push rod 252 is left) two ends, in the workpiece polishing mechanism 3 of left end, the emery wheel 33 of left end is positioned at the right side of the turning cylinder 32 of left end, in the workpiece polishing mechanism 3 of right-hand member, the emery wheel 33 of right-hand member is positioned at the left side of the turning cylinder 32 of right-hand member, between two emery wheels 33, be formed for the polishing space on two sides, buffing work-piece left and right.Contour and the axial line of these two turning cylinders 32 all distributes along left and right horizontal direction.
workpiece polishing mechanism 3 also comprises the sliding seat on support 1 of being located at sliding along left and right horizontal direction, and drive motors 31 is fixedly arranged on this sliding seat, on the output shaft that is connected to drive motors 31 of turning cylinder 32 by transmission mechanism transmission, corresponding, sliding seat has two.
in the present embodiment, be fixed with seal box 5 on sliding seat, turning cylinder 32 is along it axially through sealing case 5, and sealing case 5 is connected with turning cylinder 32 by the rotating seal ring 51 at two ends, and the axial line of this turning cylinder 32 distributes along left and right horizontal direction.
by adding thin oil at sealing case 5, can play lubricated effect to turning cylinder 32, by the setting of rotating seal ring 51, when turning cylinder 32 rotates in seal box 5, the thin oil in seal box 5 can not be revealed.
double face abrading machine also comprises the compensation mechanism 4 for the distance between two emery wheels 33 is compensated, this compensation mechanism 4 comprises the servomotor 41 of being located on support 1, be fixedly connected on the worm screw 42 on the output of servomotor 41, the worm gear 43 being meshed with worm screw 42, that match with worm gear 43 and can move along self length bearing of trend along with the rotation of worm gear 43 screw mandrel 44, the axial line of this screw mandrel 44 distributes along left and right horizontal direction, on this screw mandrel 44, be fixed with connector 45, one end of this connector 45 is fixedly connected on seal box 5, corresponding, this compensation mechanism has two.
by the setting of this compensation mechanism 4, in the time of emery wheel 33 processing wearing and tearing, servomotor 41 by two ends is corresponding drives two workpiece polishing mechanisms 3 mutually near the workpiece that two distances between emery wheel 33 is remained unchanged continue processing polishing same thickness.
in the time that seal box 5 will slide due to extraneous active force, by being connected with a joggle between worm screw 42 and worm gear 43, seal box 5 can being stabilized on support 1 it cannot be slided.
this feed mechanism is located on the support 1 of double face abrading machine, comprise the workbench 21 on support 1 of being located at sliding along fore-and-aft direction, at least two clamp mechanisms 22 on workbench 21 of being located at along left and right directions slip, the first driving mechanism 25 that is installed on workbench 21 left ends and can drives this clamp mechanism 22 to slide on workbench 21 to the right, the second driving mechanism 26 that is installed on workbench 21 right-hand members and can drives this clamp mechanism 22 to slide on workbench 21 left, be installed on workbench 21 rear ends and clamp mechanism 22 can be clamped in to the clamp mechanism 28 on workbench 21 along fore-and-aft direction, be installed on support 1 and can drive workbench 21 the 3rd driving mechanism (not shown) that slide in front and back on support 1.
this clamp mechanism 22 comprise can slide along left and right directions be located at slide 221 on workbench 21, be installed on this slide 221 for clamping the fixture 222 for the treatment of buffing work-piece.
above-mentioned the first driving mechanism 25 is the first hydraulic cylinder, the first hydraulic cylinder comprises the first cylinder body 251 being installed on workbench 21 left ends, can relative the first cylinder body 251 flexible the first push rod 252 vertically, above-mentioned the second driving mechanism 26 is the second hydraulic cylinder, the second hydraulic cylinder comprises the second cylinder body 261 being installed on workbench 21 right-hand members, can relative the second cylinder body 261 flexible the second push rod vertically, the first push rod 262 and the second push rod all distribute and the setting of coaxial inner conductor along left and right directions.
above-mentioned the 3rd driving mechanism is the 3rd hydraulic cylinder, the 3rd hydraulic cylinder comprises the 3rd cylinder body (not shown) being installed on support 1, can relatively described the 3rd cylinder body flexible the 3rd push rod 27 vertically, the external part of the 3rd push rod 27 is fixedly connected on the workbench 21 of feed mechanism, the 3rd push rod 27 distributes along fore-and-aft direction, and the 3rd driving mechanism can drive above-mentioned workbench 21 front and back on support 1 to slide.
above-mentioned clamp mechanism 28 is the 4th hydraulic cylinder, the 4th hydraulic cylinder comprises the 4th cylinder body 281 that is installed in workbench 21 rears, can relative the 4th cylinder body 281 flexible the 4th push rod 282 vertically, the 4th push rod 282 distributes along fore-and-aft direction, on the external part of the 4th push rod 282, can also be provided with clamp 283, can increase the contact area of the 4th push rod 282 and slide 221 by this clamp 283, make to clamp more firm, use this clamp mechanism, clamp mechanism 22 can be clamped on workbench 21, prevent its slip.
in the present embodiment, clamp mechanism 22 is two, the left end of workbench 21 is provided with the slip of slide 221 is carried out to the first spacing locating part 23, the right-hand member of workbench 21 is provided with the slip of slide 221 is carried out to the second spacing locating part 24, this first locating part 23 and the second locating part 24 distribute along left and right directions, and have at least a pair of.
in the present embodiment, the width of two slides 221 is identical, and distance between the first locating part 23 and the second locating part 24 is three times of slide 221 width.
the concrete course of work of setting forth lower the present embodiment below:
when using above-mentioned double face abrading machine to treat buffing work-piece, needs add man-hour, first promote two seal boxs 5, make to be located at sealing case 5 workpiece polishing mechanism 3 above mutually close, until the distance between two emery wheels 33 stops promoting while being the distance needing, start two drive motors 31.
then treat that by two buffing work-piece is placed in respectively on two fixtures 222, then the first driving mechanism 25 promotes two slides 221 to the right, in the time that withstanding the second locating part 24, the slide 221 on the right stops driving, now the fixture 222 on the left side is aimed at workpiece polishing mechanism 3 entrances, clamp mechanism 28 drives the 4th push rod 282 that the slide on the left side 221 is pushed against on workbench 21, then the first push rod 252 is retracted, the 3rd driving mechanism drives workbench 21 entirety to travel forward afterwards, the fixture 222 that is the left side moves towards workpiece polishing mechanism 3, when the fixture 222 on the left side clamps after the front end of buffing work-piece enters workpiece polishing mechanism 3, the 3rd driving mechanism stops driving, this is treated buffing work-piece polishing moulding by workpiece polishing mechanism 3, then the 3rd driving mechanism drives workbench 21 to exit this workpiece polishing mechanism 3, clamp mechanism 28 drives the 4th push rod 282 to retract, the second driving mechanism 26 promotes two slides 221 left, in the time that withstanding the first locating part 23, the slide 221 on the left side stops driving, now the right fixture 222 is aimed at workpiece polishing mechanism 3 entrances, clamp mechanism 28 drives the 4th push rod 282 that the slide on the right 221 is pushed against on workbench 21, then the second pusher retracted, the 3rd driving mechanism drives workbench 21 entirety to travel forward afterwards, the fixture 222 on the right moves towards workpiece polishing mechanism 3, when the fixture 222 on the right clamps after the front end of buffing work-piece enters workpiece polishing mechanism 3, the 3rd driving mechanism stops driving, this is treated buffing work-piece polishing moulding by workpiece polishing mechanism 3, in bruting process, can by hand the shaping workpiece on the fixture on the left side 222 be taken off, and put into the next one and treat buffing work-piece, certainly also can complete by other automation equipments the action that picks and places of buffing work-piece here, the 3rd driving mechanism drives workbench 21 to exit this workpiece polishing mechanism 3 afterwards, clamp mechanism 28 drives the 4th push rod 282 to retract.
repeat above-mentioned steps, can carry out polishing processing efficiently to workpiece.
when processing some after buffing work-piece, the top layer of emery wheel 33 can produce certain wearing and tearing, at this moment servomotor 41 drives snail 42 bars to rotate, worm screw 42 drives the worm gear 43 being engaged with to rotate, worm gear 43 drives the screw mandrel 44 being engaged with to move along its length bearing of trend, two screw mandrels 44 drive two workpiece polishing mechanisms 3 that set firmly thereon mutually close in the horizontal direction, in the time that the Distance Shortened between two emery wheels 33 is the distance setting, servomotor 41 stops driving, and this double face abrading machine can continue to process buffing work-piece.
above-described embodiment is only explanation technical conceive of the present utility model and feature; its object is to allow person skilled in the art can understand content of the present utility model and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (9)
1.
a kind of double face abrading machine, comprise support, it is characterized in that: described double face abrading machine comprises is located at two groups of workpiece polishing mechanisms for buffing work-piece on described support, described in every group, workpiece polishing mechanism includes the polishing emery wheel that can rotate around Pivot Point Center line, for driving the polishing drive unit of described emery wheel rotation, two adjacent settings of described emery wheel in workpiece polishing mechanism described in two groups, the polishing space of described workpiece is formed between two described emery wheels polishing, described double face abrading machine also comprises for described workpiece being sent into the feed mechanism in described polishing space, described feed mechanism comprises and can be located at slidably the workbench on described support along feed direction, can be along at least two group clamp mechanisms of being located at slidably perpendicular to described feed direction on described workbench, described in every group, clamp mechanism includes the slide of being located at slidably on described workbench, be installed on described slide for clamping the fixture for the treatment of buffing work-piece, arrange successively perpendicular to described feed direction in all described clamp mechanisms edge on described workbench, on described workbench, be also provided with for driving first driving mechanism of all described clamp mechanisms towards described workbench one Slideslip, for the second driving mechanism that drives all described clamp mechanisms to slide towards described workbench opposite side, described feed mechanism also comprises to be located on described workbench for described clamp mechanism is pressed on to the clamp mechanism on described workbench along feed direction, for the 3rd driving mechanism that drives described workbench to slide along feed direction.
2.
a kind of double face abrading machine according to claim 1, it is characterized in that: described in every group, workpiece polishing mechanism includes along being located at slidably the sliding seat on described support perpendicular to described feed direction, turning cylinder on the output shaft that described polishing drive unit comprises the drive motors that is fixedly arranged on described sliding seat, be connected to transmission described drive motors, described emery wheel is fixedly mounted on described turning cylinder.
3.
a kind of double face abrading machine according to claim 2, it is characterized in that: on described sliding seat, be fixed with seal box, described turning cylinder axially passes described seal box along it, described seal box joins by rotating seal ring and the described turning cylinder at two ends, and the axial line along continuous straight runs of described turning cylinder distributes and perpendicular to described feed direction.
4.
a kind of double face abrading machine according to claim 2, it is characterized in that: described double face abrading machine also comprises the compensation mechanism for the distance between two described emery wheels is compensated, described compensation mechanism comprises the servomotor of being located on described support, be fixedly connected on the worm screw on described servomotor output, the worm gear being meshed with described worm screw, the screw mandrel that can move along self length bearing of trend along with the rotation of described worm gear with described worm wheel, the axial line along continuous straight runs of described screw mandrel distributes and perpendicular to described feed direction, on described screw mandrel, be installed with connector, described screw mandrel is fixedly connected by described connector and described sliding seat, corresponding, described compensation mechanism has two.
5.
a kind of double face abrading machine according to claim 1, it is characterized in that: described clamp mechanism has two, described workbench is provided with described slide is carried out to the first spacing locating part and the second locating part, and described the first locating part and described the second locating part distribute perpendicular to feed direction.
6.
a kind of double face abrading machine according to claim 5, it is characterized in that: the distance between described the first locating part and described the second locating part is three times perpendicular to described feed direction length of described slide, and described the first locating part and described the second locating part have at least a pair of.
7.
a kind of double face abrading machine according to claim 1, it is characterized in that: described the first driving mechanism is the first hydraulic cylinder, described the first hydraulic cylinder comprises the first cylinder body being installed on described workbench, can relatively described the first cylinder body flexible the first push rod vertically, described the second driving mechanism is the second hydraulic cylinder, described the second hydraulic cylinder comprises the second cylinder body being installed on described workbench, can relatively described the second cylinder body flexible the second push rod vertically, described the first push rod and the equal along continuous straight runs of described the second push rod distribute and the setting of coaxial inner conductor.
8.
a kind of double face abrading machine according to claim 1, it is characterized in that: described the 3rd driving mechanism is the 3rd hydraulic cylinder, described the 3rd hydraulic cylinder comprises the 3rd cylinder body being installed on described support, can relatively described the 3rd cylinder body flexible the 3rd push rod vertically, described the 3rd push rod along continuous straight runs distributes, and the external part of described the 3rd push rod is connected on described workbench.
9.
a kind of double face abrading machine according to claim 1, it is characterized in that: described clamp mechanism is the 4th hydraulic cylinder, described the 4th hydraulic cylinder comprises the 4th cylinder body being installed on described workbench, can relatively described the 4th cylinder body flexible the 4th push rod vertically, described the 4th push rod along continuous straight runs distributes, and is also provided with the clamp for clamping described slide on the external part of described the 4th push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399632.5U CN203956657U (en) | 2014-07-18 | 2014-07-18 | A kind of double face abrading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399632.5U CN203956657U (en) | 2014-07-18 | 2014-07-18 | A kind of double face abrading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203956657U true CN203956657U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420399632.5U Withdrawn - After Issue CN203956657U (en) | 2014-07-18 | 2014-07-18 | A kind of double face abrading machine |
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| CN (1) | CN203956657U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149001A (en) * | 2014-07-18 | 2014-11-19 | 张家港玉成精机股份有限公司 | Two-sided grinder |
| CN105196128A (en) * | 2015-10-10 | 2015-12-30 | 南南铝业股份有限公司 | Automatic deburring machine for end face of bent aluminum workpiece |
| CN108098581A (en) * | 2017-12-22 | 2018-06-01 | 新昌县三源轴承有限公司 | A kind of two-sided rapid molding device of guide ring |
| CN109048663A (en) * | 2018-09-10 | 2018-12-21 | 南京华恩轴承制造有限公司 | A kind of bearing inner race channel grinding machine tool auto-feed compensation device |
-
2014
- 2014-07-18 CN CN201420399632.5U patent/CN203956657U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149001A (en) * | 2014-07-18 | 2014-11-19 | 张家港玉成精机股份有限公司 | Two-sided grinder |
| CN104149001B (en) * | 2014-07-18 | 2017-06-16 | 张家港玉成精机股份有限公司 | A kind of double face abrading machine |
| CN105196128A (en) * | 2015-10-10 | 2015-12-30 | 南南铝业股份有限公司 | Automatic deburring machine for end face of bent aluminum workpiece |
| CN108098581A (en) * | 2017-12-22 | 2018-06-01 | 新昌县三源轴承有限公司 | A kind of two-sided rapid molding device of guide ring |
| CN109048663A (en) * | 2018-09-10 | 2018-12-21 | 南京华恩轴承制造有限公司 | A kind of bearing inner race channel grinding machine tool auto-feed compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20170616 |