CN109632816B - Yarn fault sensor for knitting robot - Google Patents
Yarn fault sensor for knitting robot Download PDFInfo
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- CN109632816B CN109632816B CN201811598339.0A CN201811598339A CN109632816B CN 109632816 B CN109632816 B CN 109632816B CN 201811598339 A CN201811598339 A CN 201811598339A CN 109632816 B CN109632816 B CN 109632816B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
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Abstract
The invention relates to the technical field of knitting production equipment, and provides a yarn fault sensor for a knitting robot, which comprises a sensor shell, a photoelectric detection circuit, a photoelectric detection groove, a yarn passing groove, an upper cover, a pushing mechanism, a blowing mechanism and a sealing cover, wherein the yarn passing groove is arranged in the sensor shell and can move towards the top end of the sensor shell from the inside of the upper part of the sensor shell and protrude out of the sensor shell or be accommodated at the upper part of the sensor shell, the pushing mechanism is arranged in a cavity formed by the upper cover and the sensor shell, and the output end of the pushing mechanism is connected with the sensor shell and pushes the yarn passing groove to move in the sensor shell to protrude out of the sensor shell or be accommodated in the sensor shell and simultaneously drives the yarn to move so that the photoelectric detection groove automatically. The invention solves the problems that the existing photoelectric yarn fault sensor has poor detection effect, a yarn passing groove cannot be automatically cleaned, manual operation is required, and the like.
Description
Technical Field
The invention relates to the technical field of textile sensors, in particular to a yarn fault sensor for a knitting robot.
Background
In textile production, defects and unevenness often occur, and even if the best spinning raw material, the latest spinning equipment and the optimal spinning process are used, yarn defects and unevenness are inevitable no matter the traditional spinning or various novel spinning is adopted. The yarn is used as an intermediate product in the spinning process and is also used as a raw material of a subsequent process, so that the effective detection of yarn flaws in the spinning process is particularly important. The length, the width, the fineness, the neps, the wrong count and the chain yarn faults are all one of the important factors influencing the yarn quality. In the post-processing process, the production efficiency of the bobbin winder can be reduced, the weaving efficiency of the loom is influenced, and the appearance of the fabric is influenced. With the continuous improvement of the product quality and grade, the influence of the yarn defect types such as length, thickness, detail, neps, wrong count, chain-shaped yarn defects, the replacement of the head and tail manual joints of the yarn and the like on the cloth cover quality is more and more obvious. Therefore, a yarn defect sensor for detecting the quality of the yarn is of great importance, and the existing yarn defect sensor detection method mainly comprises the following steps: the photoelectric type and the capacitance type can effectively detect yarn faults, and further improve the quality of products. Referring to fig. 1, a photoelectric yarn defect sensor (model: WeftMaster FALCON-i) of Loepfe company includes a housing 1 ', a photoelectric detection circuit disposed in the housing 1 ', a yarn passing groove 11 ' disposed at an upper portion of the housing 1 ', a photoelectric detection groove disposed at an upper portion of the housing 1 ' for detecting a passing yarn at the yarn passing groove 11 ', and yarn passing hole frames 2 ', 3 ' disposed at front and rear surfaces of the housing 1 ', the yarn passing hole frames 2 ', 3 ' being respectively disposed at front and rear ends above the yarn passing groove 11 ' for limiting the passing of the yarn so that the yarn can effectively pass through the yarn passing groove 11 ' for the photoelectric detection groove to detect whether the yarn has defects such as knots, neps, thickness, etc., the photoelectric yarn defect sensor has a processor for controlling photoelectric detection and providing NPN and PNP output signals, but the photoelectric yarn defect sensor may affect the accumulation of a lot of flying waste and the like attached to the yarn passing groove of the photoelectric detection groove due to fiber hairiness friction during the movement of the yarn And (3) detecting and judging the yarn: causing false alarm or missing alarm, and affecting the working efficiency and the quality of the fabric. The yarn defect sensors are inconvenient to clean, manual cleaning needs to be stopped, manpower resources are wasted, meanwhile, the yarn type changing and the use and the detection and the use need to be manually carried out, the operation and the adjustment of the yarn are carried out, the detection and the calibration are carried out, the use is inconvenient, especially, when a large number of yarn defect sensors need to be arranged on a production line to detect the yarn, a large amount of time is usually spent on carrying out manual calibration and detection, the preparation working time period is long, the working efficiency is reduced, and the risk of misoperation exists.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides a yarn defect sensor for a knitting robot, which has the excellent performances of high yarn defect detection accuracy, good detection effect, capability of automatically cleaning yarn passing grooves, automatic resetting and self-learning calibration and capability of ensuring the quality of fabrics by using the yarn defect sensor as a robot to detect the quality of yarns through eyes.
In order to solve the technical problem, the invention adopts the following scheme: the yarn defect sensor for the knitting robot comprises a sensor shell, a photoelectric detection circuit, a yarn passing groove and a photoelectric detection groove, wherein the photoelectric detection circuit is arranged in the sensor shell and used for detecting yarn defects, the photoelectric detection groove is arranged in the sensor shell and used for detecting the passing yarn of the yarn passing groove, the photoelectric detection circuit is connected with the photoelectric detection groove, the yarn passing groove is used for detecting, analyzing and measuring the quality of the yarn, and the type and the address number of the detected yarn defects are transmitted to an upper computer, and the yarn defect sensor is characterized in that: still include upper cover, pushing mechanism, blowing mechanism and closing cap, the yarn leads to the capable groove and locates in the sensor housing and can be in sensor housing upper portion to the sensor housing top remove outward and bulge the sensor housing or accomodate in sensor housing upper portion, the upper cover lid is located the positive cavity that constitutes between upper cover and the sensor housing and hold pushing mechanism of sensor housing, pushing mechanism locates in the cavity that upper cover and sensor housing constitute, pushing mechanism's output is connected and is promoted the yarn and leads to the capable groove of passing through to move in the sensor housing and bulge the sensor housing or accomodate in the sensor housing and drive the yarn removal simultaneously and make photoelectric detection groove automated inspection yarn carry out self-learning and mark, the upper cover is located the notch that the yarn passes through the groove and detects the yarn and corresponds the department and extend to keeping away from sensor housing direction and constitute first yarn passageway, the sensor housing back is located the notch that the yarn passes through the groove and detects the yarn and corresponds the department and outwards extends The current passageway of second yarn, the sensor housing sets up the one end tip that the groove was passed through to the yarn and is equipped with the fixed slot, the closing cap sets firmly in the fluting tip that pushing mechanism was kept away from in the groove was passed through to the yarn with the fixed slot looks adaptation and the closing cap of sensor housing, the current groove of yarn detects when being located the sensor housing and detects the yarn in the fixed slot that the closing cap lid was located the sensor housing, be equipped with on the closing cap towards the inlet channel of yarn groove, the air supply port of air blowing mechanism is linked together with the inlet channel air inlet of closing cap and blows compressed air to the groove is passed through to the yarn.
The yarn conveying mechanism sends the yarn supplied by the creel out of the yarn passing groove from the first yarn passing channel of the upper cover to the next process or sends the yarn supplied by the creel out of the yarn passing groove from the second yarn passing channel of the sensor shell to the next process from the first yarn passing channel of the upper cover.
Further, the yarn conveying mechanism comprises an air blowing nozzle device and a yarn feeding tube, wherein the air blowing nozzle device blows the yarn supplied by the creel, and the yarn is sent to the next process after passing through the yarn passing groove of the yarn defect sensor through the yarn feeding tube.
Furthermore, a visible internal observation window is arranged in the center of the sealing cover facing the yarn passing groove.
Furthermore, the cover is positioned at the air inlet end of the air inlet channel and extends outwards to form a handle.
The yarn defect detection device is characterized by further comprising a display, wherein the display is arranged on the back face of the sensor shell and is connected with the photoelectric detection circuit and used for displaying the address number of the sensor, the defect type of the yarn detected by the photoelectric detection circuit and the working state and the fault information of the yarn body.
Further, the pushing mechanism is a cylinder or an electromagnet.
Furthermore, the air blowing mechanism comprises an air supply pipeline and an electromagnetic valve for controlling the on-off of the air supply pipeline, and the upper computer controls the electromagnetic valve to control the time sequence action of air blowing.
By adopting the technical scheme, the invention has the beneficial effects that: the yarn passing groove of the yarn defect sensor for the knitting robot is arranged to be pushed to move in the sensor shell through the pushing mechanism and protrude out of the sensor shell, the air blowing mechanism is arranged to blow air to clean the yarn passing groove and the photoelectric detection groove when the yarn passing groove moves out of the sensor shell through the air inlet channel of the sealing cover, the pushing mechanism drives the yarn to move when pushing the yarn passing groove, so that the photoelectric detection groove of the yarn defect sensor can detect self-learning calibration when the yarn automatically starts to detect, and can freely set the self-learning calibration after the yarn stops detecting and restarts or the self-learning calibration when the yarn initially runs through a photoelectric detection circuit according to requirements, and the like, so that the yarn passing groove of the photoelectric sensor is not easy to accumulate attachments such as flying flowers and the like by passing the yarn through the closed yarn defect sensor, and the pushing mechanism and the air blowing mechanism can be controlled to effectively clean the yarn passing groove, therefore, the yarn passing groove of the yarn defect sensor for the knitting robot can be kept clean, so that the yarn defect detection accuracy is high, the detection effect is good, the yarn passing groove can be calibrated by self-learning and automatically cleaned when the yarn passing groove is automatically reset, the yarn passing groove of the yarn defect sensor can be conveniently and quickly automatically fed into the yarn passing groove of the yarn defect sensor by the knitting robot for detection through further arrangement, namely arrangement of a yarn conveying mechanism, the yarn defect sensor for the knitting robot is convenient to mark and position and display the types of the detected yarn defects and the like when a plurality of production lines are simultaneously used, maintenance and treatment are convenient, whether flying attachments are accumulated in the yarn passing groove or not can be conveniently observed through the visual internal observation window arranged on the sealing cover, the detection is influenced by judging the accumulation of the flying attachments if the flying attachments are frequently given to the same or a plurality of position addresses, can set up control pushing mechanism and the cooperation of mechanism of blowing and carry out automatic clearance frequency, through set up the handle on the inlet channel of closing cap for the operator can this handle of manual control drive closing cap and yarn pass through groove bulge sensor casing and clear up yarn and pass through the groove, uses nimble more convenient, can extensively popularize and apply.
Drawings
FIG. 1 is a schematic perspective view of a photoelectric yarn defect sensor of the Oepfe company;
FIG. 2 is a schematic perspective view of an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a yarn passage slot protruding out of a sensor housing according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of another angle at which the yarn passage slot protrudes from the sensor housing according to an embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Referring to fig. 2 to 4, a preferred yarn defect sensor for a knitting robot according to the present invention comprises a sensor case 1, a photoelectric detection circuit disposed in the sensor case 1 for detecting a yarn defect, a yarn passage groove 2 disposed in the sensor case 1, a photoelectric detection groove disposed in the sensor case 1 for detecting a yarn passing through the yarn passage groove 2, an upper cover 3, a pushing mechanism, an air blowing mechanism, a cover 4, a display 5, and a yarn feeding mechanism, wherein the photoelectric detection circuit is connected to the photoelectric detection groove, detects, analyzes and measures the quality of the yarn passing through the yarn passage groove 2, transmits the type and address number of the detected yarn defect to an upper computer, cuts the yarn defect by the knitting robot, and controls the splicing of the yarn again, the yarn passage groove 2 is disposed in the sensor case 1, is movable in an upper portion of the sensor case 1 toward an outside of a top end of the sensor case 1, and protrudes out of the sensor case 1 or is disposed in an upper portion of the sensor case 1 and is disposed in an upper portion of the sensor case 1 In, the upper cover 3 is arranged on the front surface of the sensor shell 1, a cavity for accommodating the pushing mechanism is formed between the upper cover 3 and the sensor shell 1, the pushing mechanism is an air cylinder, the pushing mechanism is arranged in the cavity formed by the upper cover 3 and the sensor shell 1, the output end of the pushing mechanism is connected with and pushes the yarn passing groove 2 to move in the sensor shell 1 to protrude out of the sensor shell 1 or be accommodated in the sensor shell 1 and simultaneously drive the yarn to move so that the photoelectric detection groove automatically detects the yarn for calibration, the upper cover 3 is arranged at the position corresponding to the notch of the yarn detected by the yarn passing groove 2 and extends towards the direction far away from the sensor shell 1 to form a first yarn passing channel 31, the position corresponding to the notch of the yarn detected by the yarn passing groove 2 on the back surface of the sensor shell 1 extends outwards to form a second yarn passing channel 11, the yarn conveying mechanism comprises a blowing device and a yarn feeding tube, the blowing nozzle device blows and draws the yarn supplied by the creel (namely, the yarn breakage at the spindle position of the creel or the yarn end of the yarn feeding) to pass through the yarn feeding tube and the yarn passing groove of the yarn defect sensor and then sends the yarn to the next process, and specifically, the yarn conveying mechanism sends the yarn supplied by the spindle on the creel to the yarn passing groove from the first yarn passing channel of the upper cover and then sends the yarn out from the second yarn passing channel of the sensor shell to the next process: a yarn feeder, the end part of the sensor shell 1, which is provided with a yarn passing groove 2, is provided with a fixing groove 13, the sealing cover 4 is matched with the fixing groove 13 of the sensor shell 1, the sealing cover 4 is fixedly arranged at the end part of the yarn passing groove 2, which is far away from the pushing mechanism, of the groove 2, the sealing cover 4 is covered in the fixing groove 13 of the sensor shell 1 when the yarn passing groove 2 detects the yarn in the sensor shell 1, the sealing cover 4 is provided with an observation window 41 towards the center of the yarn passing groove 2, the sealing cover 4 is provided with an air inlet channel 42 towards the yarn passing groove 2, the air inlet end of the sealing cover 4, which is positioned at the air inlet channel 42, extends outwards to form a handle 43, so that a user can manually control the handle 43 to drive the sealing cover 4 and the yarn passing groove 2 to protrude out of the sensor shell 1 to clean the yarn passing groove 2, the blowing mechanism comprises an air supply pipeline and an electromagnetic valve for controlling, the air supply port of the blowing mechanism is communicated with the air inlet of the air inlet channel 42 of the sealing cover 4 to blow compressed air to the yarn through groove 2, the display 5 is arranged on the back of the sensor shell 1, and the display 5 is connected with the photoelectric detection circuit and used for displaying the address number of the sensor, the defect type of the yarn detected by the photoelectric detection circuit, and the working state and the fault information of the body.
The pushing mechanism can also be a driving unit such as an electromagnet, the yarn conveying mechanism can also be other conveying mechanisms capable of quickly passing the yarn through the yarn fault sensor, and meanwhile, the yarn conveying mechanism can also be used for sending the yarn supplied by the spindle on the creel out of the yarn passing groove from the second yarn passing channel of the sensor shell and then sending the yarn out of the first yarn passing channel of the upper cover to the yarn conveyor in the next process.
The yarn passing groove of the yarn fault sensor for the knitting robot is arranged to be pushed to move in the sensor shell through the pushing mechanism and protrude out of the sensor shell, the air blowing mechanism is arranged to blow air to clean the yarn passing groove and the photoelectric detection groove when the yarn passing groove moves out of the sensor shell through the air inlet channel of the sealing cover, the pushing mechanism drives the yarn to move when pushing the yarn passing groove, so that the photoelectric detection groove of the yarn fault sensor can detect self-learning calibration when the yarn automatically starts to detect, and can freely set automatic self-learning calibration after the yarn stops detecting and restarts or automatic self-learning calibration during initial operation according to requirements through the photoelectric detection circuit, and the like, so that the yarn passing groove of the photoelectric sensor is not easy to accumulate attachments such as flying flowers and the like by passing the yarn through the closed yarn fault sensor, and the yarn passing groove can be effectively cleaned by controlling the pushing mechanism and the air blowing mechanism, therefore, the yarn passing groove of the yarn defect sensor for the knitting robot can be kept clean, so that the yarn defect detection accuracy is high, the detection effect is good, the yarn passing groove can be calibrated by self-learning and automatically cleaned when the yarn passing groove is automatically reset, the yarn passing groove of the yarn defect sensor can be conveniently and quickly automatically fed into the yarn passing groove of the yarn defect sensor by the knitting robot for detection through further arrangement, namely arrangement of a yarn conveying mechanism, the yarn defect sensor for the knitting robot is convenient to mark and position and display the types of the detected yarn defects and the like when a plurality of production lines are simultaneously used, maintenance and treatment are convenient, whether flying attachments are accumulated in the yarn passing groove or not can be conveniently observed through the visual internal observation window arranged on the sealing cover, the detection is influenced by judging the accumulation of the flying attachments if the flying attachments are frequently given to the same or a plurality of position addresses, can set up control pushing mechanism and the cooperation of mechanism of blowing and carry out automatic clearance frequency, through set up the handle on the inlet channel of closing cap for the operator can this handle of manual control drive closing cap and yarn pass through groove bulge sensor casing and clear up yarn and pass through the groove, uses nimble more convenient, can extensively popularize and apply.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The yarn defect sensor for the knitting robot comprises a sensor shell, a photoelectric detection circuit, a yarn passing groove and a photoelectric detection groove, wherein the photoelectric detection circuit is arranged in the sensor shell and used for detecting yarn defects, the photoelectric detection groove is arranged in the sensor shell and used for detecting the passing yarn of the yarn passing groove, the photoelectric detection circuit is connected with the photoelectric detection groove, the yarn passing groove is used for detecting, analyzing and measuring the quality of the yarn, and the type and the address number of the detected yarn defects are transmitted to an upper computer, and the yarn defect sensor is characterized in that: still include upper cover, pushing mechanism, blowing mechanism and closing cap, the yarn leads to the capable groove and locates in the sensor housing and can be in sensor housing upper portion to the sensor housing top remove outward and bulge the sensor housing or accomodate in sensor housing upper portion, the upper cover lid is located the positive cavity that constitutes between upper cover and the sensor housing and hold pushing mechanism of sensor housing, pushing mechanism locates in the cavity that upper cover and sensor housing constitute, pushing mechanism's output is connected and is promoted the yarn and leads to the capable groove of passing through to move in the sensor housing and bulge the sensor housing or accomodate in the sensor housing and drive the yarn removal simultaneously and make photoelectric detection groove automated inspection yarn carry out self-learning and mark, the upper cover is located the notch that the yarn passes through the groove and detects the yarn and corresponds the department and extend to keeping away from sensor housing direction and constitute first yarn passageway, the sensor housing back is located the notch that the yarn passes through the groove and detects the yarn and corresponds the department and outwards extends The current passageway of second yarn, the sensor housing sets up the one end tip that the groove was passed through to the yarn and is equipped with the fixed slot, the closing cap sets firmly in the fluting tip that pushing mechanism was kept away from in the groove was passed through to the yarn with the fixed slot looks adaptation and the closing cap of sensor housing, the current groove of yarn detects when being located the sensor housing and detects the yarn in the fixed slot that the closing cap lid was located the sensor housing, be equipped with on the closing cap towards the inlet channel of yarn groove, the air supply port of air blowing mechanism is linked together with the inlet channel air inlet of closing cap and blows compressed air to the groove is passed through to the yarn.
2. The yarn defect sensor for a knitting robot according to claim 1, characterized in that: the yarn conveying mechanism sends the yarn supplied by the creel out of the second yarn passing channel of the sensor shell to the next process after the yarn is sent from the first yarn passing channel of the upper cover to the yarn passing groove, or sends the yarn supplied by the creel out of the first yarn passing channel of the upper cover to the next process after the yarn is sent from the second yarn passing channel of the sensor shell to the yarn passing groove.
3. The yarn defect sensor for a knitting robot according to claim 2, characterized in that: the yarn conveying mechanism comprises an air blowing nozzle device and a yarn feeding tube, and the air blowing nozzle device blows and draws the yarn supplied by the creel to pass through the yarn feeding tube and the yarn passing groove of the yarn defect sensor and then sends the yarn to the next procedure.
4. The yarn defect sensor for a knitting robot according to claim 1, characterized in that: and an observation window for viewing the inside is arranged in the center of the sealing cover facing the yarn passing groove.
5. The yarn defect sensor for a knitting robot according to claim 1 or 4, characterized in that: the sealing cover is positioned at the air inlet end of the air inlet channel and extends outwards to form a handle.
6. The yarn defect sensor for a knitting robot according to claim 1, characterized in that: the yarn defect detecting device is characterized by further comprising a display, wherein the display is arranged on the back face of the sensor shell and is connected with the photoelectric detection circuit and used for displaying the address number of the sensor, the defect type of the yarn detected by the photoelectric detection circuit and the working state and the fault information of the body.
7. The yarn defect sensor for a knitting robot according to claim 1, characterized in that: the pushing mechanism is a cylinder or an electromagnet.
8. The yarn defect sensor for a knitting robot according to claim 1, characterized in that: the air blowing mechanism comprises an air supply pipeline and an electromagnetic valve for controlling the on-off of the air supply pipeline, and the upper computer controls the electromagnetic valve to control the time sequence action of air blowing.
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| CN201811598339.0A CN109632816B (en) | 2018-12-26 | 2018-12-26 | Yarn fault sensor for knitting robot |
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| CN201811598339.0A CN109632816B (en) | 2018-12-26 | 2018-12-26 | Yarn fault sensor for knitting robot |
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| CN109632816B true CN109632816B (en) | 2021-03-05 |
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| US4927093A (en) * | 1988-01-15 | 1990-05-22 | Gebrueder Loepfe Ag | Method for braking a moving thread-like material and thread brake for carrying out said method |
| JPH10120304A (en) * | 1996-10-17 | 1998-05-12 | Murata Mach Ltd | Quality monitor device for takeup machine |
| CN200978362Y (en) * | 2006-11-21 | 2007-11-21 | 陈存富 | Photoelectric type electronic yarn cleaner |
| CN101215775A (en) * | 2007-01-04 | 2008-07-09 | Iro有限公司 | Yarn detector |
| EP1985565A1 (en) * | 2007-04-26 | 2008-10-29 | Gebrüder Loepfe AG | Device for optical detection of flaws in a yarn or yarn precursor |
| CN101307517A (en) * | 2007-05-17 | 2008-11-19 | 陈存富 | Electronic clearer |
| CN201272853Y (en) * | 2008-09-22 | 2009-07-15 | 陈存富 | Photoelectric electronic yarn clearer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206428377U (en) * | 2016-12-20 | 2017-08-22 | 浙江泰坦股份有限公司 | A kind of yarn detector |
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2018
- 2018-12-26 CN CN201811598339.0A patent/CN109632816B/en active Active
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|---|---|---|---|---|
| US4927093A (en) * | 1988-01-15 | 1990-05-22 | Gebrueder Loepfe Ag | Method for braking a moving thread-like material and thread brake for carrying out said method |
| JPH10120304A (en) * | 1996-10-17 | 1998-05-12 | Murata Mach Ltd | Quality monitor device for takeup machine |
| CN200978362Y (en) * | 2006-11-21 | 2007-11-21 | 陈存富 | Photoelectric type electronic yarn cleaner |
| CN101215775A (en) * | 2007-01-04 | 2008-07-09 | Iro有限公司 | Yarn detector |
| EP1985565A1 (en) * | 2007-04-26 | 2008-10-29 | Gebrüder Loepfe AG | Device for optical detection of flaws in a yarn or yarn precursor |
| CN101307517A (en) * | 2007-05-17 | 2008-11-19 | 陈存富 | Electronic clearer |
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Address after: 362000 Yushan Industrial Zone, Shibi village, Hanjiang Town, Shishi City, Quanzhou City, Fujian Province Patentee after: Fujian Baoxiang Knitting Technology Co.,Ltd. Address before: 362000 Yushan Industrial Zone, Shibi village, Hanjiang Town, Shishi City, Quanzhou City, Fujian Province Patentee before: SHISHI CITY BAOXIANG KNITTING MACHINERY Co.,Ltd. |