CN216514504U - Detection system capable of automatically switching sewing means - Google Patents
Detection system capable of automatically switching sewing means Download PDFInfo
- Publication number
- CN216514504U CN216514504U CN202122615845.XU CN202122615845U CN216514504U CN 216514504 U CN216514504 U CN 216514504U CN 202122615845 U CN202122615845 U CN 202122615845U CN 216514504 U CN216514504 U CN 216514504U
- Authority
- CN
- China
- Prior art keywords
- sewing
- collar
- roller
- shirt body
- bone position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
A detection system for automatically switching sewing means comprises a base; a wire feeding mechanism; a head assembly; a sewing platform; a code adjusting mechanism; the deviation rectifying mechanism comprises a deviation rectifying frame, a deviation rectifying wheel and a pushing mechanism, wherein the deviation rectifying frame is hinged on the base, at least one deviation rectifying wheel is arranged at the front end of the deviation rectifying frame and used for rectifying deviation of the shirt body, the pushing mechanism is also hinged on the base, the driving end of the pushing mechanism is also hinged with the deviation rectifying frame, and at least one deviation rectifying sensor is also arranged on the deviation rectifying frame; and the switching detection sensor is arranged on one side of the sewing platform, and when the seam-joining part where the shirt body and the collar strip are sewn triggers the detection sensor, the sewing platform is driven to switch the sewing means.
Description
Technical Field
The utility model relates to the field of textile industry, in particular to a detection system capable of automatically switching sewing means.
Background
The collar strip procedure in the industry comprises full-manual sewing and semi-automatic sewing, wherein the full-manual sewing is the most traditional method, and except for a sewing machine, workers manually carry out collar mounting without any tool; in semi-automatic sewing, besides a sewing machine, the semi-automatic sewing machine is also provided with a device for automatically aligning and tensioning the collar strip, the collar opening and the edge of the collar strip are aligned by hands during sewing, and meanwhile, the length of the cloth is manually controlled, so that the automation degree is not obviously improved compared with the traditional method, and the procedure of putting on the collar is still completed by a very high sewing technology of workers.
SUMMERY OF THE UTILITY MODEL
Based on the technical scheme, the utility model provides a full-automatic collar mounting technology, wherein a collar strip is placed on a roller by a human hand, and the machine automatically finds the bone position, aligns the collar strip edges and accurately places the collar strip; the sewing can be carried out after the shirt body is covered on the neckline, and in the sewing process, the machine automatically aligns the neckline with the edge of the neckline and carries out cloth holding according to the set length to realize the automation of the neckline process. In addition, the technology can also realize the automatic code adjusting function (accurately adjust codes according to data input in advance), and overcomes the defect that the semi-automatic upper captain adjusts codes according to the feeling.
In order to achieve the purpose, the technical scheme is as follows:
a collar sewing machine with automatic switching of sewing, comprising:
a base;
the thread feeding mechanism is arranged on the base, sequentially comprises a thread breakage inductor and a thread stand terminal and is used for providing sewing threads for the follow-up process;
the machine head assembly is arranged on the base, and one side of the machine head assembly is provided with a sewing machine set which is used for receiving sewing threads of the thread feeding mechanism to sew;
the sewing platform is arranged on one side of the machine head assembly, a first roller is arranged on the edge side of the sewing platform, a first positioning block and a second positioning block are oppositely arranged on the upper surface of the sewing platform, and a gap between the first positioning block and the second positioning block is used for positioning and transmitting a collar strip during sewing;
the size adjusting mechanism is opposite to the machine head assembly and is provided with a rack, a second roller, a driving device, a sliding rail and a sliding cavity, the sliding rail is arranged on the base, the sliding cavity is arranged below the rack and is in sliding fit with the sliding rail, the driving device is arranged inside the sliding rail, the second roller is arranged on one side of the rack and is opposite to the first roller, the first roller and the second roller are used for being sleeved with shirt bodies and collar strips, and under the action of the driving device, the second roller can be close to or far away from the first roller, so that the shirt bodies with different collar sizes can be adapted;
the deviation rectifying mechanism comprises a deviation rectifying frame, a deviation rectifying wheel and a pushing mechanism, wherein the deviation rectifying frame is hinged on the base, at least one deviation rectifying wheel is arranged at the front end of the deviation rectifying frame, the deviation rectifying frame is turned over to enable the deviation rectifying wheel to be tightly attached to the sewing platform at the beginning, so that the shirt body is pressed to rectify deviation by utilizing the positive and negative rotation of the shirt body, the pushing mechanism is hinged on the base, the driving end of the pushing mechanism is hinged with the deviation rectifying frame, and at least one deviation rectifying sensor is arranged on the deviation rectifying frame;
and the switching detection system is arranged on one side of the sewing platform and is used for driving the sewing platform to switch the sewing means after detecting that the shirt body and the collar strip reach a specific position for sewing.
In some embodiments, the switch detection system is a switch detection sensor that indicates the arrival of a particular position of the sewing when triggered at the seam where the body and collar strips have been sewn.
In some embodiments, the switch detection system may detect a number of sewing needles, and indicate that front or back collar sewing is complete when the number of sewing needles reaches a preset value.
In some embodiments, the sewing platform is provided with an automatic bone locating mechanism at the side close to the second roller;
the collar strip comprises a bone position detection optical axis which can move up and down along the sewing platform, and when the bone position of the collar strip moves to the bone position detection optical axis, the bone position detection optical axis is driven to move down;
the spring piece is arranged at the lower end of the bone position detection optical axis and used for driving the bone position detection optical axis to reset;
and the proximity switch is arranged below the spring piece, and when the bone position detection optical axis moves downwards, the proximity switch triggers the switch to determine the position of the bone position.
In some embodiments, an upper insertion piece and a lower insertion piece are arranged on one side of the sewing platform, when the automatic bone position finding mechanism obtains the bone position and continues to drive the shirt body and the collar strip to move to the insertion piece, the insertion piece extends out to enter the upper layer and the lower layer of the collar strip, then the collar strip stops rotating after rotating to the set position, the upper insertion piece extends out to enable a gap to exist between the shirt body and the collar strip, and the upper insertion piece and the lower insertion piece are both pushed by the driving cylinder.
In some embodiments, a cutter is provided on one side of the sewing platform for cutting the shirt body and collar strip flush.
In some embodiments, a collar strip driving wheel for driving a collar strip is arranged on the upper side of the machine frame above the second roller, a shirt body driving wheel for driving a shirt body is also arranged on one side of the collar strip driving wheel, and the collar strip driving wheel and the shirt body driving wheel are driven by a driving motor.
In some embodiments, the base is further provided with a positioning rail, the positioning rail is provided with a plurality of positioning holes which are uniformly distributed, the positioning rail is provided with a bearing assembly for bearing the deviation correcting mechanism, and the bearing assembly is provided with a positioning bolt which is matched with the positioning holes.
In some embodiments, a baffle for assisting in cutting the sewing thread is further arranged on one side of the sewing platform, and the baffle is provided with a driving cylinder.
In some embodiments, a touch screen for operation is disposed on one side of the base.
The beneficial effect of this application does:
1. the automatic alignment of automatic bone finding and collar mounting is realized, hands are liberated, and the automation of the collar mounting part process is realized;
2. the utility model can realize digital automatic cloth holding, automatic cloth feeding, automatic deviation rectifying and automatic sewing, and realizes automation of the top-collar process.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a first schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a second schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a third schematic structural diagram of an embodiment of the present invention;
FIG. 4 is a fourth schematic structural diagram of an embodiment of the present invention;
FIG. 5 is a fourth schematic structural diagram of an embodiment of the present invention;
fig. 6 is a schematic view of detecting the state of the seam allowance (shirt body on the upper side and collar strip on the lower side).
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1-6, a collar sewing machine capable of automatically switching sewing comprises:
a base 1;
the thread feeding mechanism 2 is arranged on the base 1, sequentially comprises a thread breakage inductor 201 and a thread stand terminal 202, and provides sewing threads for the follow-up;
the machine head component 3 is arranged on the base 1, and one side of the machine head component is provided with a sewing machine set 301 which is used for receiving the sewing thread of the thread feeding mechanism 2 to sew;
the sewing platform 4 is arranged on one side of the head assembly 3, a first roller 401 is arranged on the edge side of the sewing platform, a first positioning block 402 and a second positioning block 403 are oppositely arranged on the upper surface of the sewing platform, and a gap between the first positioning block 402 and the second positioning block 403 is used for positioning and transmitting a collar strip during sewing;
the code adjusting mechanism 5 is opposite to the machine head component 3 and is provided with a frame 501, a second roller 502, a driving device, a sliding rail 503 and a sliding cavity 504, the slide rail 503 is disposed on the base 1, the slide cavity 504 is disposed below the frame 501, and the sliding cavity 504 is in sliding fit with the sliding rail 503, the driving device is arranged inside the sliding rail 503, the second roller 502 is arranged on one side of the frame 501, and opposite to the first roller 401, the first roller 401 and the second roller 502 are used for a shirt body and a collar strip to be sleeved, under the action of the driving device, the second roller 502 can be close to or far away from the first roller 401, so that the machine can be suitable for shirt bodies with different neckline sizes, the driving device comprises a driving motor, a driving wheel and a driven wheel, and the driving wheel, the driven wheel and the machine frame are connected through a belt;
the deviation rectifying mechanism 6 comprises a deviation rectifying frame 601, deviation rectifying wheels 602 (preferably universal wheels) and a pushing mechanism 603, wherein the deviation rectifying frame 601 is hinged to the base 1, at least one deviation rectifying wheel 602 is arranged at the front end of the deviation rectifying frame 601, when the deviation rectifying frame 601 is turned over, the deviation rectifying wheels 602 are tightly attached to the sewing platform 4, so that the shirt body is pressed to be rectified by positive and negative rotation of the shirt body, the pushing mechanism 603 is also hinged to the base 1, the driving end of the pushing mechanism is also hinged to the deviation rectifying frame 601, at least one deviation rectifying sensor 604 is further arranged on the deviation rectifying frame 601, and preferably, the pushing mechanism is a pushing cylinder;
the switching detection system is arranged on one side of the sewing platform 4 and is used for driving the sewing platform 4 to switch a sewing means, namely a sewing process, after detecting that the shirt body and the collar strip reach a specific position through sewing, in the first embodiment, the switching detection system is a switching detection sensor 7, and when the seam-stitched part of the shirt body and the collar strip is triggered to the detection sensor, the sewing process is switched;
specifically, firstly, sewing threads are sent out from a thread feeding mechanism to provide threads for subsequent shirt bodies and collar strips;
secondly, the collar strip is sleeved on a first roller and a second roller, the front collar of the shirt body is upward and is also sleeved on the first roller and the second roller, the second roller can be adjusted according to the size of the collar, and the shirt body and the collar strip rotate on the first roller and the second roller under the action of driving force;
starting the equipment, wherein the radian of the front collar is different from that of the rear collar, so that the sewing process is different, when the front collar is sewn, the equipment is sewn into three sections, the middle part of the equipment is not provided with cloth, the two sides of the front collar are provided with cloth, so that the front collar is sewn, the rear part of the half of the initial sewing point can reach the switching detection sensor, so that a small section is sewn continuously, the sewing of the front collar is finished, and then, referring to fig. 6, the switching detection sensor is triggered at the sewing position;
after the equipment acquires the signal, the sewing process is switched to the sewing process of the back collar, and at the moment, the equipment does not contain cloth, so that the front collar and the back collar are sewn respectively;
in the whole process, in the deviation rectifying process, the deviation rectifying wheel presses the shirt body and carries out deviation rectifying action according to the position of the shirt body (the deviation rectifying wheel judges according to the signal of a deviation rectifying sensor, when a light spot of the sensor is blocked, the shirt body is pushed outwards, and when the light spot of the sensor is not blocked, the shirt body is pushed inwards);
automatic sewing: automatic cloth holding, automatic code setting and rotation of shirt body. The automatic cloth containing function is realized by combining a sewing needle number measuring function and a function of digitally changing the tooth stroke of the sewing surface of the clothes, the cloth containing part is controllable by measuring the sewing needle number in real time, and the cloth containing quantity is controllable by controlling a motor, so that the cloth containing in the whole sewing process is controlled; the automatic code adjusting function is to realize an accurate code changing function through motor control by inputting parameters into a machine in advance; the rotation function of shirt body is to complete the automatic rotation of shirt body through the front and back rollers, the cloth feeding teeth and the blowing device of the sewing machine.
In the second embodiment, the switching detection system can detect the number of sewing needles, when the number of sewing needles reaches a preset value, the sewing of the front collar or the rear collar is finished, the current number of needles is detected during sewing, if the number of needles required by the front collar is reached, the sewing of the front collar is finished, the sewing process of the rear collar is switched, and at the moment, the specific position is the position for triggering the stitching to detect the number of fixed needles after stitching.
In the third embodiment, an automatic bone positioning mechanism 8 is arranged on the side, close to the second roller 502, of the sewing platform 4;
the collar strip comprises a bone position detection optical axis 801 which can move up and down along the sewing platform 4, and when the bone position of the collar strip moves to the bone position detection optical axis 801, the bone position detection optical axis 801 is driven to move down;
the spring piece 802 is arranged at the lower end of the bone position detection optical axis 801 and used for driving the bone position detection optical axis 801 to reset;
a proximity switch 803, which is disposed below the spring plate 802 and is triggered when the bone position detection optical axis 801 moves downward to determine the position of the bone position;
when the bone position of the collar reaches the bone position detection optical axis, the bone position detection optical axis moves downwards, the spring piece is pressed downwards at the moment, so that the position of the proximity switch is reached, the position of the bone position is judged by the device at the moment, the effect of automatically finding the bone position is achieved, the current sewing position can be determined in the sewing process through the position of the bone position after the bone position is found, and whether the front collar or the rear collar is sewn can be judged.
Further, an upper insert piece 9 and a lower insert piece 91 are arranged on one side of the sewing platform 4, when the automatic bone position finding mechanism 8 obtains the bone position and continues to drive the shirt body and the collar to move to the insert piece, the insert piece 91 extends out to enter the upper layer and the lower layer of the collar, then the collar rotates to the set position and stops rotating, the upper insert piece 9 extends out to enable a gap to exist between the shirt body and the collar, the upper insert piece 9 and the lower insert piece 91 are both pushed by a driving cylinder, and the upper insert piece and the lower insert piece are sequentially pushed out;
the collar driving wheel drives the second roller to rotate, the machine continues to move forward for a certain distance to a fixed position after triggering the bone position detector, the collar driving wheel stops (the back end of the bone position), the insertion piece 91 extends out and enters the upper layer and the lower layer of the collar, then the collar driving force drives the second roller to rotate to the fixed position and then stops rotating, and the upper insertion piece 9 extends out;
after equipment found the position of bone, the collar strip rotated one section distance in the place ahead of last insertion piece, because collar strip position of bone thickness is different with collar strip other part thickness, and the clearance of this position cloth is bigger, supplies the insertion piece to insert more easily, inserts between collar strip upper portion and the lower part at first down the insertion piece for separate collar strip upper and lower part, avoid collar strip upper and lower part to contact each other, thereby make the upper and lower part of collar strip and fall body have sufficient surplus position between two liang, influence the relative movement between the upper and lower part.
Further, a cutter 1001 is arranged on one side of the sewing platform 4, and the cutter 1001 is used for cutting off the shirt body and the collar strips to be flush;
the shirt body and the collar strip are completely flush after reaching the cutter and cutting off some cloth beyond the sewing platform.
Further, a collar strip driving wheel 1101 for driving a collar strip is arranged on the upper side of the rack 501 above the second roller 502, a shirt body driving wheel 1102 for driving a shirt body is also arranged on one side of the collar strip driving wheel 1101, the collar strip driving wheel 1101 and the shirt body driving wheel 1102 are both driven by a driving motor 1103, and the whole device is driven by a driving air cylinder;
when the insertion piece is inserted into the collar strip, the drive cylinder cannot push the device out, the collar strip drive wheel is in contact with the second roller under the current state and is used for driving the collar strip to rotate, after the drive cylinder pushes the device out, the collar strip drive wheel is not in contact with the second roller, the shirt body drive wheel is in contact with clothes, the shirt body drive wheel and the second roller clamp catch the shirt body, and then the shirt body is driven to rotate through the rotation of the shirt body drive wheel.
Further, a positioning rail 1201 is further arranged on the base 1, a plurality of positioning holes 1202 are uniformly arranged on the positioning rail 1201, a bearing component 1203 used for bearing the deviation correcting mechanism 6 is arranged on the positioning rail 1201, and a positioning bolt 1204 matched with the positioning holes 1202 is arranged on the bearing component 1203;
in order to clean conveniently, the positioning bolt is firstly pulled up, the bearing assembly is moved backwards on the positioning rail, so that cleaning or maintenance can be carried out, and the positioning bolt is moved downwards after the bearing assembly is moved to a working position, so that the positioning bolt is matched with the positioning hole to realize fixation, and the operation is convenient.
Furthermore, a baffle 1301 for assisting in cutting sewing threads is further arranged on one side of the sewing platform 4, a driving cylinder is arranged on the baffle 1301 and pushes out the baffle, the baffle pushes out a shirt body along with the baffle, and scissors of the sewing machine assist in cutting off redundant sewing threads.
Further, a touch screen 14 for operation is arranged on one side of the base 1, when the front collar faces upwards, the sewing process of the front collar is firstly started through the touch screen, and when the rear collar faces upwards, the sewing process of the rear collar is firstly started through the touch screen.
The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the scope of the present application, which is within the scope of the present application, except that the same or similar principles and basic structures as the present application may be used.
Claims (8)
1. A detection system for automatically switching sewing means is characterized by comprising:
the sewing platform (4) is arranged on one side of the machine head component (3), a first roller (401) is arranged on the edge side of the sewing platform, a second roller (502) is arranged on the other side of the sewing platform, the shirt body and the collar strip are sleeved on the first roller (401) and the second roller (502), and under the action of driving force, the shirt body and the collar strip are rotationally transported on the first roller (401) and the second roller (502) and are sewn after passing through the sewing platform (4);
and the switching detection sensor (7) is arranged on one side of the sewing platform (4), and when the seam-closing part where the shirt body and the collar strip are sewn is triggered to the detection sensor, the switching detection sensor indicates that a specific position of sewing is reached, and the sewing platform (4) is driven to switch the sewing means.
2. The detecting system for automatically switching the sewing means according to claim 1, wherein: the switching detection sensor (7) is a microswitch.
3. The detecting system for automatically switching the sewing means according to claim 1, wherein: an automatic bone position finding mechanism (8) is arranged on the sewing platform (4) close to the second roller (502) and comprises a bone position detection optical axis (801), a spring piece (802) and a proximity switch (803);
when the bone position of the collar strip moves to the bone position detection optical axis (801), driving the bone position detection optical axis (801) to move downwards;
the bone position detection optical axis (801) presses the spring piece (802) downwards;
triggering the proximity switch (803) as the bone position detection optical axis (801) moves downward to determine the position of the bone position;
the spring piece (802) resets the bone position detection optical axis (801).
4. The detecting system for automatically switching the sewing means according to claim 3, wherein: sewing platform (4) one side is equipped with inserted sheet (9) and inserted sheet (91) down, works as after automatic look for bone position mechanism (8) and acquire bone position, continue to order about shirt body and collar strip and remove to this inserted sheet when, inserted sheet (91) stretch out, get into between the collar strip lower floor, then the collar strip is rotatory to setting up the postlaminar stall, go up inserted sheet (9) and stretch out to there is the clearance between messenger's shirt body and the collar strip, it all promotes by driving actuating cylinder to go up inserted sheet (9) and inserted sheet (91) down.
5. The detecting system for automatically switching the sewing means according to claim 1, wherein: one side of the sewing platform (4) is provided with a cutter (1001), and the cutter (1001) is used for cutting off the shirt body and the collar strips to enable the shirt body and the collar strips to be flush.
6. The detecting system for automatically switching the sewing means according to claim 1, wherein: the positioning device is characterized by further comprising a base (1), wherein a positioning track (1201) is further arranged on the base (1), a plurality of positioning holes (1202) are uniformly distributed in the positioning track (1201), a bearing assembly (1203) used for bearing is arranged on the positioning track (1201), and a positioning bolt (1204) matched with the positioning holes (1202) is arranged on the bearing assembly (1203).
7. The detecting system for automatically switching the sewing means according to claim 1, wherein: sewing platform (4) one side still is equipped with baffle (1301) that are used for the supplementary sewing thread that cuts, baffle (1301) are equipped with and drive actuating cylinder.
8. The detecting system for automatically switching the sewing means according to claim 6, wherein: and a touch screen (14) for operation is arranged on one side of the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122615845.XU CN216514504U (en) | 2021-10-28 | 2021-10-28 | Detection system capable of automatically switching sewing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122615845.XU CN216514504U (en) | 2021-10-28 | 2021-10-28 | Detection system capable of automatically switching sewing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216514504U true CN216514504U (en) | 2022-05-13 |
Family
ID=81525762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122615845.XU Active CN216514504U (en) | 2021-10-28 | 2021-10-28 | Detection system capable of automatically switching sewing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216514504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774571A (en) * | 2021-10-28 | 2021-12-10 | 汉羽科技(广东)有限公司 | Detection system capable of automatically switching sewing means |
-
2021
- 2021-10-28 CN CN202122615845.XU patent/CN216514504U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774571A (en) * | 2021-10-28 | 2021-12-10 | 汉羽科技(广东)有限公司 | Detection system capable of automatically switching sewing means |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216514504U (en) | Detection system capable of automatically switching sewing means | |
| CA2184440C (en) | Sewing sleeves on shirt bodies | |
| JPS6155396B2 (en) | ||
| CN113774572A (en) | Collar mounting machine capable of automatically switching sewing | |
| CN216514505U (en) | Collar loading machine capable of automatically switching sewing | |
| US5676078A (en) | Method and apparatus for sewing sleeves on shirt bodies | |
| CN113774571A (en) | Detection system capable of automatically switching sewing means | |
| JP3000456B1 (en) | Automatic sewing device for tatami edges and automatic sewing cutting device for tatami edges and tatami floors | |
| US4519331A (en) | Apparatus for transfering and stacking short workpiece panels | |
| CN1306110A (en) | Sewing machine for sewing fillet | |
| KR0141987B1 (en) | How to link letters | |
| US6123041A (en) | Automated sewing system and method for sewing a knit glove cuff edge | |
| CN213708720U (en) | Automatic garment piece feeding and strip pasting device | |
| EP0792964A2 (en) | Machine for inspecting fabrics | |
| TW201408835A (en) | Sewing machine | |
| GB2296509A (en) | Method for mounting pantyhose blanks | |
| CN220703990U (en) | Sewing equipment with deviation rectifying control | |
| JPH06142375A (en) | Sewing machine for sewing on strip body | |
| JP2557877Y2 (en) | Workpiece holding device | |
| JP2001046771A (en) | Belt loop supply device | |
| JPH06142369A (en) | Sewing machine for attaching rubber | |
| JPH08280959A (en) | Tatami sewing method | |
| JP2003320186A (en) | Linking machine | |
| KR940005360B1 (en) | Sewing apparatus | |
| JP2002000978A (en) | Tatami mat sewing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |