CN102717320B - Abrasive belt polishing device - Google Patents
Abrasive belt polishing device Download PDFInfo
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- CN102717320B CN102717320B CN201210188864.1A CN201210188864A CN102717320B CN 102717320 B CN102717320 B CN 102717320B CN 201210188864 A CN201210188864 A CN 201210188864A CN 102717320 B CN102717320 B CN 102717320B
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- abrasive belt
- branch arm
- cylinder
- polishing equipment
- rotating shaft
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Abstract
The invention discloses an abrasive belt polishing device, which comprises an engine base, a transmission device and a tailstock device which are arranged on the engine base, an electromotor, an abrasive belt rack device, a winding device and a polishing rack device, wherein the transmission device and the tailstock device are provided with ejector pins arranged oppositely and used for clamping a workpiece; the electromotor is arranged on the engine base and is used for driving the ejector pins on the transmission device to rotate; the abrasive belt rack device is arranged on the engine base and is used for winding an abrasive belt; the winding device is arranged on the engine base and can be used for automatically winding the abrasive belt which exceeds a preset length after a one-time polishing process; and the polishing rack device is arranged on the engine base and is used for compressing the abrasive belt to a polishing face of the workpiece. According to the abrasive belt polishing device, the surface roughness of the cam workpiece reaches below Rz3.2, the chatter marks and the closed angles on the surface of the workpiece are eliminated, and the product quality is improved.
Description
Technical field
The present invention relates to part of automobile engine technical field, particularly a kind of abrasive belt polishing equipment.
Background technology
Camshaft is parts in piston engine, and its effect is to control the action of the opening and closing of valve.Although the rotating speed of camshaft is the half (rotating speed at two stroke engine convexity wheel shaft is identical with bent axle) of bent axle in four-stroke engine, but its rotating speed is still very high conventionally, and need to bear very large moment of torsion, therefore very high in the requirement aspect intensity and support to camshaft in design, its material is generally Special Casting Iron, also adopts once in a while forging.Because valve motion rule is related to power and the service performance of an engine, therefore the precision of camshaft in the design process of engine in occupation of consequence very.
Cam face, after grinding, does not carry out surface physics processing conventionally, and the surface quality of cam directly ensures by process equipment.But process equipment there will be inevitable vibration in processing operation process, causes cam face to occur chatter mark, if this chatter mark can send the sound of uttering long and high-pitched sounds in the contact process of idler wheel type swinging arm, is a great problem of current idler wheel type swinging arm engine.
Therefore, how improving workpiece surface roughness, eliminate surface of the work chatter mark wedge angle, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of abrasive belt polishing equipment, to improve workpiece surface roughness, eliminate surface of the work chatter mark wedge angle.
For achieving the above object, the invention provides following technical scheme:
A kind of abrasive belt polishing equipment, comprising:
Support;
Be arranged at transmission device and tail stock device on described support, described transmission device and tail stock device are provided with positioned opposite, and for the thimble of clamping work pieces;
Be arranged on described support the motor that drives the thimble on described transmission device to rotate;
Be arranged on described support, for being wound around the abrasive belt frame device in abrasive band;
Be arranged on described support, and complete stock removal polishing process, meeting automatic rolling is crossed the Webbing take-up device in preset length abrasive band;
Be arranged on described support, abrasive band is compacted to the polishing rack device on workpiece burnishing surface.
Preferably, in above-mentioned abrasive belt polishing equipment, described polishing rack device comprises:
Be arranged at the piece on described support;
Be articulated with the upper branch arm of a described piece upper end;
Be articulated with the lower branch arm of a described piece lower end;
One end is articulated with respectively two pulling blocks on described upper branch arm and described lower branch arm, and the other end of two described pulling blocks is hinged;
Be arranged at the backstand on a described piece;
Be articulated with on the pin joint of two described pulling blocks, and stretch into the push rod in described backstand;
Stretch in described backstand, for compressing the pull bar in abrasive band, described pull bar is connected with described push rod;
The drive unit that drives described upper branch arm and/or described lower branch arm to swing.
Preferably, in above-mentioned abrasive belt polishing equipment, described drive unit is cylinder, and the cylinder body of described cylinder is arranged on described lower branch arm, and the cylinder rod of described cylinder and described upper branch arm are hinged.
Preferably, in above-mentioned abrasive belt polishing equipment, the cylinder rod of described cylinder is hinged by an arm brace and described upper branch arm.
Preferably, in above-mentioned abrasive belt polishing equipment, described Webbing take-up device comprises:
Be arranged at the winding seat on described support;
Be arranged at rotationally the first rotating shaft on described winding seat, one end of described the first rotating shaft is provided with the first gear, and the other end is provided with for driving described the first rotating shaft to rotate the ratchet mechanism of the default number of turns;
Be arranged at rotationally on described winding seat, for second rotating shaft in the abrasive band of reeling, described the second rotating shaft is provided with the second gear engaging with described the first gear.
Preferably, in above-mentioned abrasive belt polishing equipment, described ratchet mechanism comprises:
Be arranged at the ratchet in described the first rotating shaft;
Be arranged at the driving cylinder on described winding seat, the cylinder rod place of described driving cylinder is provided with the ratchet coordinating with described ratchet.
Preferably, in above-mentioned abrasive belt polishing equipment, also comprise the isolator rotating for controlling described the first rotating shaft one direction.
Preferably, in above-mentioned abrasive belt polishing equipment, also comprise:
Be arranged at the dialing ring of described ratchet radial outside;
Be connected by screw with described dialing ring, and be positioned at the end cap in outside, described ratchet end.
Preferably, in above-mentioned abrasive belt polishing equipment, described transmission device comprises:
Be arranged at the spindle carrier on described support;
Be supported in the main shaft edge cover on described spindle carrier;
Be arranged at rotationally described main shaft and inlay the main shaft putting;
Be arranged at the thimble of described main shaft one end;
Be arranged at the described main shaft other end, the belt wheel being in transmission connection by band with described motor.
Preferably, in above-mentioned abrasive belt polishing equipment, described main shaft is arranged at rotationally described main shaft edge by bearing and puts, and described bearing is located by nut.
Can find out from above-mentioned technical scheme, abrasive belt polishing equipment provided by the invention, drive workpiece rotation by transmission device and tail stock device, by polishing rack device, the abrasive band being wound around on abrasive belt frame device is compacted on workpiece burnishing surface, in the time that workpiece rotates, completes the polishing process (polishing time can be determined according to workpiece rotating cycle) to surface of the work.Often complete stock removal polishing process, abrasive band can be excessively a part of by Webbing take-up device automatic rolling, makes the abrasive band that contacts next part surface of the work remain new master.The present invention reaches below Rz3.2 cam workpiece surface roughness, has eliminated surface of the work chatter mark wedge angle, has improved product quality.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The main TV structure schematic diagram of the abrasive belt polishing equipment that Fig. 1 provides for the embodiment of the present invention;
The side-looking structural representation of the abrasive belt polishing equipment that Fig. 2 provides for the embodiment of the present invention;
The plan structure schematic diagram of the abrasive belt polishing equipment that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the polishing rack device that Fig. 4 provides for the embodiment of the present invention;
The main TV structure schematic diagram of the Webbing take-up device that Fig. 5 provides for the embodiment of the present invention;
The sectional structure schematic diagram of the Webbing take-up device that Fig. 6 provides for the embodiment of the present invention;
The backsight structural representation of the Webbing take-up device that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the transmission device that Fig. 8 provides for the embodiment of the present invention.
Detailed description of the invention
The invention discloses a kind of abrasive belt polishing equipment, to improve workpiece surface roughness, eliminate surface of the work chatter mark wedge angle.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 3, the main TV structure schematic diagram of the abrasive belt polishing equipment that Fig. 1 provides for the embodiment of the present invention; The side-looking structural representation of the abrasive belt polishing equipment that Fig. 2 provides for the embodiment of the present invention; The plan structure schematic diagram of the abrasive belt polishing equipment that Fig. 3 provides for the embodiment of the present invention.
The abrasive belt polishing equipment that the embodiment of the present invention provides, comprises support 4, transmission device 1, tail stock device 3, motor 9, abrasive belt frame device 7, Webbing take-up device 6 and polishing rack device 2.
Wherein, transmission device 1 and tail stock device 3 are arranged on support 4, and transmission device 1 and tail stock device 3 are provided with positioned opposite, and for the thimble of clamping work pieces, by two thimbles by Workpiece clamping.Motor 9 is arranged on support 4, rotates for the thimble on drive transmission 1, by motor outputting power, drives the thimble on transmission device 1 to rotate, and coordinates the thimble on tail stock device 3, realizes the rotation of workpiece.
Abrasive belt frame device 7 is arranged on support 4, and for being wound around abrasive band, Webbing take-up device 6 is arranged on support 4, and completes stock removal polishing process, and meeting automatic rolling is crossed the abrasive band of preset length.Polishing rack device 2 is arranged on support 4, abrasive band is compacted on the burnishing surface of workpiece.
Abrasive belt polishing equipment provided by the invention, drive workpiece rotation by transmission device 1 and tail stock device 3, by polishing rack device 2, the abrasive band being wound around on abrasive belt frame device 7 is compacted on workpiece burnishing surface, in the time that workpiece rotates, completes the polishing process (polishing time can be determined according to workpiece rotating cycle) to surface of the work.Often complete stock removal polishing process, abrasive band can be excessively a part of by Webbing take-up device 6 automatic rollings, makes the abrasive band that contacts next part surface of the work remain new master.The present invention reaches below Rz3.2 cam workpiece surface roughness, has eliminated surface of the work chatter mark wedge angle, has improved product quality.
The present invention also can arrange linear bearing slide 8 on support 4, and abrasive belt frame device 7 is arranged on linear bearing slide 8, realizes the adjustment of abrasive belt frame device 7 positions, to meet the optional position of workpiece by linear bearing slide 8.The slip of linear bearing slide 8 can provide power to realize by screw mechanism and slide, and the leading screw of screw mechanism is arranged on support 4 by bearing 10.
Refer to Fig. 4, the structural representation of the polishing rack device that Fig. 4 provides for the embodiment of the present invention.
In the present embodiment, polishing rack device 2 comprises a piece 23, upper branch arm 21, lower branch arm 22, pulling block 28, backstand 26, push rod 24, pull bar 25 and drive unit.
Prop up piece 23 and be arranged on support 4, upper branch arm 21 is articulated with the upper end of a piece 23, and lower branch arm 22 is articulated with the lower end of a piece 23.One end of two pulling blocks 28 is articulated with respectively on upper branch arm 21 and lower branch arm 22, and the other end of two pulling blocks 28 is hinged.Backstand 26 is arranged on a piece 23, and push rod 24 is articulated with on the pin joint of two pulling blocks 28, and stretches in backstand 26.Pull bar 25 stretches in backstand 26, and for compressing abrasive band, pull bar 25 is connected with push rod 24, and drive unit drives upper branch arm 21 and/or lower branch arm 22 to swing.
Drive upper branch arm 21 and/or lower branch arm 22 to swing by drive unit, upper branch arm 21 and lower branch arm 22 just can drive two pulling blocks 28 to rotate, two pulling blocks 28 are in rotation process, will pull or promote push rod 24 slides along backstand 26, in the moving process of push rod 24, will move by pushing drawing rod 25, thereby realize compression or loosen abrasive band.
In the present embodiment, drive unit is cylinder, and the cylinder body of cylinder is arranged on lower branch arm 22, and the cylinder rod of cylinder and upper branch arm 21 are hinged.By the flexible swing that realizes upper branch arm 21 and lower branch arm 22 of cylinder.
In order further to optimize technique scheme, the cylinder rod of the cylinder that the embodiment of the present invention provides is hinged by an arm brace 27 and upper branch arm 21.
Refer to Fig. 5-Fig. 7, the main TV structure schematic diagram of the Webbing take-up device that Fig. 5 provides for the embodiment of the present invention; The sectional structure schematic diagram of the Webbing take-up device that Fig. 6 provides for the embodiment of the present invention; The backsight structural representation of the Webbing take-up device that Fig. 7 provides for the embodiment of the present invention.
The Webbing take-up device 6 that the embodiment of the present invention provides comprises winding seat 61, the first rotating shaft, the second rotating shaft and the second gear 62.
Wherein, winding seat 61 is arranged on support 4, and the first rotating shaft is arranged on winding seat 61 rotationally, and one end of the first rotating shaft is provided with the first gear, and the other end is provided with for driving the first rotating shaft to rotate the ratchet mechanism of the default number of turns.The second rotating shaft is used for the abrasive band of reeling, and it is arranged on winding seat 61 rotationally, and the second rotating shaft is provided with the second gear 62 engaging with the first gear.
The present invention drives the first rotating shaft to rotate the default number of turns by ratchet mechanism, and power is passed to the second rotating shaft by the first gear in the first rotating shaft, thereby make the second rotating shaft turn over a part of abrasive band.When the second rotating shaft turns around abrasive band, polishing rack device 2 loosens abrasive band.
In the present embodiment, ratchet mechanism comprises:
Be arranged at the ratchet 63 in the first rotating shaft;
Be arranged at the driving cylinder on winding seat 61, drive the cylinder rod place of cylinder to be provided with the ratchet 67 coordinating with ratchet 63.Drive the cylinder rod of cylinder to stretch out, will drive ratchet 67 to promote ratchet 63 and rotate a stroke, in the time that the cylinder rod that drives cylinder is retracted, due to the single effect of ratchet mechanism self-locking, make ratchet 67 can not pull ratchet 63 to rotate.
In order further to optimize technique scheme, the present invention also can comprise the isolator 66 rotating for controlling the first rotating shaft one direction, further prevents the second rotating shaft upset, so that abrasive band is emitted.
In order further to optimize technique scheme, the present invention also can comprise:
Be arranged at the dialing ring 65 of ratchet 63 radial outsides;
Be connected by screw with dialing ring 65, and be positioned at the end cap 64 in ratchet 63 outsides, end.
Refer to Fig. 8, the structural representation of the transmission device that Fig. 8 provides for the embodiment of the present invention.
In the present embodiment, transmission device 1 comprises:
Be arranged at the spindle carrier 17 on support 4;
Be supported in the main shaft edge cover 14 on spindle carrier 17;
Be arranged at rotationally the main shaft 15 on main shaft edge cover 14;
Be arranged at the thimble 16 of main shaft 15 one end;
Be arranged at main shaft 15 other ends, the belt wheel 11 being in transmission connection by band with motor 9.
The power that the present invention exports motor 9 passes to main shaft 15 by belt wheel 11, and main shaft 15 passes to power thimble 16 again, thereby drives workpiece to rotate.Main shaft 15 is arranged on main shaft edge cover 14 rotationally by bearing 13, and bearing 13 is located by nut 12.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an abrasive belt polishing equipment, is characterized in that, comprising:
Support (4);
Be arranged at transmission device (1) and tail stock device (3) on described support (4), described transmission device (1) and tail stock device (3) are provided with positioned opposite, and for the thimble of clamping work pieces;
Be arranged at described support (4) upper, the motor (9) that drives the thimble on described transmission device (1) to rotate;
Be arranged at described support (4) upper, for being wound around the abrasive belt frame device (7) in abrasive band;
Be arranged at described support (4) upper, and complete stock removal polishing process, meeting automatic rolling is crossed the Webbing take-up device (6) in preset length abrasive band;
Be arranged at described support (4) upper, abrasive band is compacted to the polishing rack device (2) on workpiece burnishing surface;
Described polishing rack device (2) comprising:
Be arranged at the piece (23) on described support (4);
Be articulated with the upper branch arm (21) of described piece (23) upper end;
Be articulated with the lower branch arm (22) of described piece (23) lower end;
One end is articulated with respectively two pulling blocks (28) on described upper branch arm (21) and described lower branch arm (22), and the other end of two described pulling blocks (28) is hinged;
Be arranged at the backstand (26) on a described piece (23);
Be articulated with on the pin joint of two described pulling blocks (28), and stretch into the push rod (24) in described backstand (26);
Stretch in described backstand (26), for compressing the pull bar (25) in abrasive band, described pull bar (25) is connected with described push rod (24);
The drive unit that drives described upper branch arm (21) and/or described lower branch arm (22) to swing.
2. abrasive belt polishing equipment as claimed in claim 1, is characterized in that, described drive unit is cylinder, and it is upper that the cylinder body of described cylinder is arranged at described lower branch arm (22), and the cylinder rod of described cylinder and described upper branch arm (21) are hinged.
3. abrasive belt polishing equipment as claimed in claim 2, is characterized in that, the cylinder rod of described cylinder is hinged by an arm brace (27) and described upper branch arm (21).
4. abrasive belt polishing equipment as claimed in claim 1, is characterized in that, described Webbing take-up device (6) comprising:
Be arranged at the winding seat (61) on described support (4);
Be arranged at rotationally the first rotating shaft on described winding seat (61), one end of described the first rotating shaft is provided with the first gear, and the other end is provided with for driving described the first rotating shaft to rotate the ratchet mechanism of the default number of turns;
Be arranged at rotationally described winding seat (61) upper, for second rotating shaft in the abrasive band of reeling, described the second rotating shaft is provided with the second gear (62) engaging with described the first gear.
5. abrasive belt polishing equipment as claimed in claim 4, is characterized in that, described ratchet mechanism comprises:
Be arranged at the ratchet (63) in described the first rotating shaft;
Be arranged at the driving cylinder on described winding seat (61), the cylinder rod place of described driving cylinder is provided with the ratchet (67) coordinating with described ratchet (63).
6. abrasive belt polishing equipment as claimed in claim 5, is characterized in that, also comprises the isolator (66) rotating for controlling described the first rotating shaft one direction.
7. abrasive belt polishing equipment as claimed in claim 5, is characterized in that, also comprises:
Be arranged at the dialing ring (65) of described ratchet (63) radial outside;
Be connected by screw with described dialing ring (65), and be positioned at the end cap (64) in outside, described ratchet (63) end.
8. the abrasive belt polishing equipment as described in claim 1-7 any one, is characterized in that, described transmission device (1) comprising:
Be arranged at the spindle carrier (17) on described support (4);
Be supported in the main shaft edge cover (14) on described spindle carrier (17);
Be arranged at rotationally the main shaft (15) on described main shaft edge cover (14);
Be arranged at the thimble (16) of described main shaft (15) one end;
Be arranged at described main shaft (15) other end, the belt wheel (11) being in transmission connection by band with described motor (9).
9. abrasive belt polishing equipment as claimed in claim 8, is characterized in that, it is upper that described main shaft (15) is arranged at described main shaft edge cover (14) rotationally by bearing (13), and described bearing (13) is by nut (12) location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188864.1A CN102717320B (en) | 2012-06-08 | 2012-06-08 | Abrasive belt polishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188864.1A CN102717320B (en) | 2012-06-08 | 2012-06-08 | Abrasive belt polishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102717320A CN102717320A (en) | 2012-10-10 |
| CN102717320B true CN102717320B (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210188864.1A Active CN102717320B (en) | 2012-06-08 | 2012-06-08 | Abrasive belt polishing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102717320B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769987A (en) * | 2014-01-24 | 2014-05-07 | 重庆希米机械设备有限公司 | Automatic crankshaft polishing device |
| CN103737462A (en) * | 2014-01-24 | 2014-04-23 | 重庆希米机械设备有限公司 | Automatic cam polishing device |
| CN109483372A (en) * | 2018-11-12 | 2019-03-19 | 重庆科技学院 | Motorcycle camshaft polishing machine |
| CN111644941B (en) * | 2019-02-18 | 2022-07-08 | 深圳市科茂翔电子有限公司 | Device for removing oxide layer of electronic element welding leg |
| CN111716211A (en) * | 2020-07-24 | 2020-09-29 | 青岛德盛机械制造有限公司 | Crankshaft end surface polishing equipment |
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| US4833834A (en) * | 1987-10-30 | 1989-05-30 | General Motors Corporation | Camshaft belt grinder |
| CN2053968U (en) * | 1989-09-30 | 1990-03-07 | 江苏省计算技术研究所 | Microcomputer digital-controlled copy-less grinder for grinding camshaft |
| US4945683A (en) * | 1989-07-10 | 1990-08-07 | J. D. Phillips Corporation | Abrasive belt grinding machine |
| JPH06190707A (en) * | 1992-12-25 | 1994-07-12 | Nippei Toyama Corp | Polishing device |
| CN2236923Y (en) * | 1995-05-04 | 1996-10-09 | 重庆大学 | Camshaft polishing machine |
| US5951377A (en) * | 1996-08-01 | 1999-09-14 | Radtec, Inc. | Microfinishing machine |
| CN1520961A (en) * | 2003-02-12 | 2004-08-18 | �ղ��Զ�����ʽ���� | Lapping apparatus and lapping method |
| CN101116950A (en) * | 2006-08-04 | 2008-02-06 | 天润曲轴有限公司 | Crankshaft thrust surface polishing device |
| CN101172330A (en) * | 2007-11-22 | 2008-05-07 | 上海交通大学 | High-rigidity turning spherical surface numerical control accurate grinding equipment |
| CN202640088U (en) * | 2012-06-08 | 2013-01-02 | 四川银钢一通凸轮轴股份有限公司 | Galloon polishing device |
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|---|---|---|---|---|
| US4833834A (en) * | 1987-10-30 | 1989-05-30 | General Motors Corporation | Camshaft belt grinder |
| US4945683A (en) * | 1989-07-10 | 1990-08-07 | J. D. Phillips Corporation | Abrasive belt grinding machine |
| CN2053968U (en) * | 1989-09-30 | 1990-03-07 | 江苏省计算技术研究所 | Microcomputer digital-controlled copy-less grinder for grinding camshaft |
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| CN2236923Y (en) * | 1995-05-04 | 1996-10-09 | 重庆大学 | Camshaft polishing machine |
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| CN1520961A (en) * | 2003-02-12 | 2004-08-18 | �ղ��Զ�����ʽ���� | Lapping apparatus and lapping method |
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| CN102717320A (en) | 2012-10-10 |
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Free format text: FORMER OWNER: SICHUAN YIN GANG YITONG CAMSHAFT SHARES CO., LTD. Effective date: 20120914 Owner name: SICHUAN YIN GANG YITONG CAMSHAFT SHARES CO., LTD. Free format text: FORMER OWNER: CHONGQING YITONG CAM TECHNOLOGY CO., LTD. Effective date: 20120914 |
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Free format text: CORRECT: ADDRESS; FROM: 400033 SHAPINGBA, CHONGQING TO: 638400 GUANGYUAN, SICHUAN PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20120914 Address after: District Street sub Industrial Park 638400 wusheng County Guangyuan province industry of Sichuan Applicant after: Sichuan Silver Steel Yitong Camshaft Co., Ltd. Address before: 400033, Shapingba District, Chongqing Town, Nanxi village lemon lemon Fort Club Applicant before: Chongqing Yingang Yitong Camshafts Technology Co.,Ltd. Applicant before: Sichuan Silver Steel Yitong Camshaft Co., Ltd. |
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| C53 | Correction of patent for invention or patent application | ||
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Address after: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Applicant after: Sichuan Silver Steel Yitong Camshaft Co., Ltd. Address before: District Street sub Industrial Park 638400 wusheng County Guangyuan province industry of Sichuan Applicant before: Sichuan Silver Steel Yitong Camshaft Co., Ltd. |
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Address after: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Applicant after: Sichuan Silver Steel Yitong Camshaft Co., Ltd. Address before: District Street sub Industrial Park 638400 wusheng County Guang'an province industry of Sichuan Applicant before: Sichuan Silver Steel Yitong Camshaft Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SICHUAN YIN GANG YITONG CAMSHAFT SHARES CO., LTD. TO: SICHUAN SILVER STEEL YITONG CAMSHAFT CO., LTD. |
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