CN214458747U - Sewing machine with extensible table top - Google Patents
Sewing machine with extensible table top Download PDFInfo
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- CN214458747U CN214458747U CN202120611992.7U CN202120611992U CN214458747U CN 214458747 U CN214458747 U CN 214458747U CN 202120611992 U CN202120611992 U CN 202120611992U CN 214458747 U CN214458747 U CN 214458747U
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Abstract
The utility model belongs to the technical field of sewing machine and specifically relates to a sewing machine of extending mesa is related to, including installing in the sewing machine body of workstation, the sewing machine body is close to the wherein one end of workstation, and the one end that the sewing machine body was kept away from to the workstation articulates there is the extension board, and the workstation bottom surface is equipped with the drive assembly who is used for adjusting extension board rotation angle, and drive assembly is connected with the bottom surface of extension board. This application has the effect that improves product quality.
Description
Technical Field
The present application relates to the field of sewing machines, and more particularly, to a sewing machine with an extendable table.
Background
A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.
In the related art, the sewing machine includes a sewing machine body installed on the top surface of the workbench, and a worker places a cloth on the top surface of the workbench, namely, the sewing machine body can be controlled to sew the cloth.
In view of the above-mentioned related technologies, the inventor believes that if the fabric is a fabric with a large area, the adaptation degree between the area of the workbench and the large fabric is low, and during the sewing process, the part of the large fabric far away from the sewing machine is prone to fall off from the top surface of the workbench, so that the sewing direction is deviated, and the defect of product quality reduction is caused.
SUMMERY OF THE UTILITY MODEL
In order to improve product quality, the application provides a sewing machine with an extensible table.
The application provides a sewing machine of extending mesa adopts following technical scheme:
the utility model provides a sewing machine of extending mesa, is including installing in the sewing machine body of workstation, the sewing machine body is close to the wherein one end of workstation, the one end that the sewing machine body was kept away from to the workstation articulates there is the extension board, the workstation bottom surface is equipped with the drive assembly who is used for adjusting extension board rotation angle, drive assembly is connected with the bottom surface of extension board.
Through adopting above-mentioned technical scheme, control drive assembly can adjust the rotation angle of extension board, when needing to use the extension board, will extend the board and adjust into the horizontality, play the effect of extension workstation for supply great cloth to place, reduced the condition that great cloth appears dropping when the sewing, thereby improved product quality.
Optionally, the driving assembly comprises a mounting box, a first servo motor, a screw rod and a sliding block, the bottom surface of the workbench is provided with a connecting rod which is vertically arranged, the mounting box is horizontally arranged, one end of the mounting box is connected with the bottom end of the connecting rod, the mounting box is close to the extension plate, the length direction of the mounting box is parallel to the length direction of the workbench, the top surface of the mounting box is arranged in an open structure, the screw rod is rotationally connected in the mounting box, the length direction of the screw rod is parallel to the length direction of the mounting box, the slide block is connected in the mounting box in a sliding way and is in threaded connection with the screw rod, the first servo motor is fixed on the side surface of the connecting rod departing from the mounting box, the output shaft of the first servo motor penetrates through the connecting rod to stretch into the mounting box and is connected with the lead screw, the top surface of the sliding block is hinged with a control rod, and one end, far away from the sliding block, of the control rod is hinged with the bottom surface of the extension plate.
Through adopting above-mentioned technical scheme, control first servo motor, first servo motor's output shaft drive lead screw rotates for the slider slides along the mounting box, and then cooperates articulated control lever to adjust the rotation angle of extension board, is favorable to the workman of being convenient for to expand the extension board fast.
Optionally, the extension plate and the two ends parallel to the length direction of the workbench are both provided with extension assemblies for enlarging the area of the extension plate.
Through adopting above-mentioned technical scheme, after will extending the board upset to the horizontality, the control extension subassembly continues to enlarge the area of extending the board to be convenient for the better great cloth of placing of workman, further reduce the condition that great cloth dropped when the sewing, thereby improve product quality.
Optionally, the extension subassembly includes returning face plate and second servo motor, the length direction of returning face plate is perpendicular with the length direction of extension board, one of them long limit of returning face plate articulates in the side that the extension board is close to the mounting box through pivot and hinge, one of them minor face that the returning face plate is close to the extension board, second servo motor is fixed in the one side that the workstation was kept away from to the extension board, the length direction of second servo motor output shaft is parallel with the length direction of pivot, the output shaft of second servo motor and the end connection of pivot.
Through adopting above-mentioned technical scheme, control second servo motor, second servo motor's output shaft drive pivot is rotated, and then drives the returning face plate upset, when the extension board is in the horizontality, is the horizontality with the returning face plate upset, can reach the effect that enlarges the area of extension board to the better great cloth of placing of the workman of being convenient for.
Optionally, a containing groove is formed in one end, close to the workbench, of the turnover plate, a connecting plate is connected to the containing groove in a sliding mode, the length direction of the connecting plate is parallel to the length direction of the workbench, connecting strips are fixed to two sides of the workbench, the length direction of the connecting strips is parallel to the length direction of the workbench, a connecting groove matched with the connecting strips is formed in one long edge of the connecting plate, and two ends of the connecting groove are communicated with two ends of the connecting plate respectively.
By adopting the technical scheme, when the turnover plate is not in a horizontal state, a worker draws out the connecting plate from the accommodating groove, and the connecting plate can be spliced on the side edge of the workbench through the matching of the connecting groove and the connecting strip, so that the effect of enlarging the area of the workbench is achieved.
Optionally, a locking assembly for locking the connecting plate and the connecting strip is arranged on the side surface of the connecting plate, and the locking assembly is located outside the accommodating groove when the connecting plate is located in the accommodating groove.
Through adopting above-mentioned technical scheme, when the connecting plate passes through spread groove and connecting strip concatenation in the workstation side, locking Assembly locking connecting strip to reduce the condition that the connecting plate removed at the sewing in-process.
Optionally, the locking subassembly includes locking lever, spring and gleitbretter, the mounting hole has been seted up to one of them side of connecting plate, the aperture at mounting hole middle part is greater than the aperture at mounting hole both ends, the mounting hole communicates with each other with the spread groove, the mounting hole is close to the one end that the connecting plate stretches out the storage tank, locking lever sliding connection is in the mounting hole, the gleitbretter cover is established and is fixed in the locking lever, gleitbretter and mounting hole middle part sliding connection, the diameter of gleitbretter equals with the aperture at mounting hole middle part, the locking lever is located to the spring housing, the spring both ends are fixed in respectively that the gleitbretter keeps away from the side of spread groove and the one end that the spread groove was kept away from to the mounting hole, the connecting strip top surface is seted up and is supplied locking lever male constant head tank.
Through adopting above-mentioned technical scheme, the workman splices the connecting plate in the side of workstation after, and the locking lever is relative with the constant head tank, loosens the locking lever this moment, and the spring exerts thrust to the gleitbretter for the gleitbretter drives the locking lever and removes towards the connecting strip, and the locking lever plays the effect of locking connecting plate and connecting strip in inserting the constant head tank, thereby is favorable to the better cloth of placing of workman.
Optionally, the vertical cross sections of the connecting groove and the connecting strip are arranged in a dovetail shape.
Through adopting above-mentioned technical scheme, the spread groove of dovetail and the connecting strip of dovetail mutually support, are favorable to reducing the condition that the connecting plate slided from the connecting strip.
In summary, the present application includes at least one of the following beneficial technical effects:
1. control drive assembly can adjust the rotation angle of extension board, when needing to use the extension board, will extend the board and adjust into the horizontality, play the effect of extension workstation for supply great cloth to place, reduced the condition that drops when the sewing appears in great cloth, thereby improved product quality.
2. Control second servo motor, second servo motor's output shaft drive pivot rotates, and then drives the returning face plate upset, is in the horizontality when the extension board, with the returning face plate upset, can reach the effect that enlarges the area of extension board to the better great cloth of placing of the workman of being convenient for.
3. The workman splices the connecting plate behind the side of workstation, and the locking lever is relative with the constant head tank, loosens the locking lever this moment, and the spring exerts thrust to the gleitbretter for the gleitbretter drives the locking lever and removes towards the connecting strip, and the locking lever plays the effect of locking connecting plate and connecting strip in inserting the constant head tank, thereby is favorable to the better cloth of placing of workman.
Drawings
Fig. 1 is a schematic view of the overall structure of a sewing machine with an extendable table top according to the present embodiment.
Fig. 2 is a sectional view of a sewing machine with an extendable table in this embodiment.
FIG. 3 is another angular cross-sectional view of the sewing machine with an extensible table in this embodiment.
Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.
Fig. 5 is a partially enlarged schematic view of a portion B in fig. 3.
Description of reference numerals: 1. a work table; 2. a sewing machine body; 3. supporting legs; 4. a stretching plate; 5. mounting a box; 6. a first servo motor; 7. a screw rod; 8. a slider; 9. a connecting rod; 10. a control lever; 11. a turnover plate; 12. a second servo motor; 13. a rotating shaft; 14. a hinge; 15. a containing groove; 16. a connecting plate; 17. a connecting strip; 18. connecting grooves; 19. a locking lever; 20. a spring; 21. sliding blades; 22. mounting holes; 23. and (6) positioning a groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses sewing machine with extensible table top. Referring to fig. 1 and 2, the sewing machine with the extensible table top comprises a sewing machine body 2 installed on a workbench 1, four supporting legs 3 are fixed on the bottom surface of the workbench 1, and the four supporting legs 3 are arranged in a matrix mode and used for supporting the workbench 1. The workbench 1 is in a rectangular plate shape, and the sewing machine body 2 is close to one end of the workbench 1. One end of the workbench 1, which is far away from the sewing machine body 2, is hinged with an extension plate 4 through a hinge 14, the length direction of the extension plate 4 is perpendicular to that of the workbench 1, and the length of the extension plate 4 is equal to the width of the workbench 1. Hinge 14 is located the bottom surface of workstation 1, and is close to the one end that workstation 1 kept away from sewing machine body 2 for extension board 4 can overturn to the horizontality, and when extension board 4 was located the horizontality, the top surface of extension board 4 flushed with the top surface of workstation 1. The bottom surface of the workbench 1 is provided with a driving component for adjusting the turning angle of the extension board 4.
Referring to fig. 2, the driving assembly comprises a mounting box 5, a first servo motor 6, a screw rod 7 and a sliding block 8, a connecting rod 9 which is vertically arranged is fixed on the bottom surface of the workbench 1, the connecting rod 9 is located in the middle of the bottom surface of the workbench 1, the mounting box 5 is horizontally arranged, and one end of the mounting box is fixed at the bottom end of the connecting rod 9. One end of the mounting box 5, which is far away from the connecting rod 9, is close to and faces the extension plate 4, and the length direction of the mounting box 5 is parallel to the length direction of the workbench 1. The top surface of mounting box 5 is the open structure setting, and lead screw 7 is the level setting and its both ends rotate respectively to be connected in two interior terminal surfaces of mounting box 5, and the length direction of lead screw 7 is parallel with the length direction of mounting box 5. First servo motor 6 is fixed in the side that connecting rod 9 deviates from mounting box 5, and the length direction of the output shaft of first servo motor 6 is parallel with the length direction of lead screw 7, and the output shaft of first servo motor 6 passes connecting rod 9 and stretches into mounting box 5 and with the end connection of lead screw 7. The sliding block 8 is connected in the mounting box 5 in a sliding mode and is in threaded connection with the screw rod 7. The top surface of the sliding block 8 is hinged with a control rod 10, and one end of the control rod 10, which is far away from the sliding block 8, is hinged with the bottom surface of the extension plate 4. An output shaft of the first servo motor 6 drives the screw rod 7 to rotate, so that the sliding block 8 slides along the mounting box 5, and the turning angle of the extension plate 4 is adjusted by matching with the hinged control rod 10.
Referring to fig. 2 and 3, in order to enlarge the area of the extending plate 4, extending assemblies are provided on both short sides of the extending plate 4 parallel to the longitudinal direction of the table 1.
Referring to fig. 1 and 2, the extension assembly includes a turning plate 11 and a second servo motor 12, the length direction of the turning plate 11 is parallel to the length direction of the workbench 1, one long side of the turning plate 11 is hinged to the side of the extension plate 4 close to the mounting box 5 through a rotating shaft 13 and a hinge 14, and the turning plate 11 is close to one short side of the extension plate 4. The hinge 14 and the hinge plate fixedly connected with the extension plate 4 rotate relative to the rotating shaft 13, and the hinge 14 and the hinge plate fixedly connected with the turnover plate 11 are fixedly connected with the rotating shaft 13, so that the rotating shaft 13 drives the turnover plate 11 to turn over when rotating. The second servo motor 12 is fixed on one side of the extending plate 4 far away from the workbench 1 and is close to the rotating shaft 13, the length direction of an output shaft of the second servo motor 12 is parallel to that of the rotating shaft 13, and the output shaft of the second servo motor 12 is connected with the end part of the rotating shaft 13 and used for driving the rotating shaft 13 to rotate so as to drive the turnover plate 11 to turn over. When the extension plate 4 is in a horizontal state, the turnover plate 11 is turned to be in a horizontal state, and the effect of expanding the area of the extension plate 4 can be achieved.
Referring to fig. 4 and 5, in order to enlarge the area of the workbench 1, a containing groove 15 is formed in one end, close to the workbench 1, of the turnover plate 11, a connecting plate 16 is connected in the containing groove 15 in a sliding mode, the length direction of the connecting plate 16 is parallel to the length direction of the workbench 1, two long edges of the workbench 1 are both fixed with connecting strips 17 which are horizontally arranged, and the length direction of the connecting strips 17 is parallel to the length direction of the workbench 1. One long side of the connecting plate 16 is provided with a connecting groove 18 matched with the connecting strip 17, and two ends of the connecting groove 18 respectively penetrate through two ends of the connecting plate 16. When the area of the workbench 1 needs to be enlarged, a worker firstly pulls the connecting plate 16 out of the accommodating groove 15, and the connecting plate 16 is spliced on the side edge of the workbench 1 through the matching of the connecting groove 18 and the connecting strip 17, namely, the connecting strip 17 is in sliding connection with the connecting groove 18, so that the effect of enlarging the area of the workbench 1 is achieved.
Referring to fig. 4 and 5, in order to reduce the possibility that the connection plate 16 is detached from the connection bar 17, a locking assembly for locking the connection plate 16 and the connection bar 17 is provided at a side of the connection plate 16. The connecting plate 16 is far away from the bottom end of the accommodating groove 15 and extends out of the accommodating groove 15, when the connecting plate 16 is located in the accommodating groove 15, the locking assembly is close to one end of the connecting groove 18 located outside the accommodating groove 15, and the locking assembly is located outside the accommodating groove 15, so that a worker can conveniently place the connecting plate 16 in the accommodating groove 15.
Referring to fig. 5, the locking assembly includes a locking lever 19, a spring 20 and a sliding piece 21, wherein a mounting hole 22 is formed in one side surface of the connecting plate 16, the aperture of the middle of the mounting hole 22 is larger than the apertures of the two ends of the mounting hole 22, the mounting hole 22 is communicated with the connecting groove 18, and the mounting hole 22 is close to one end of the connecting plate 16 extending out of the accommodating groove 15. The locking lever 19 is slidably connected to the mounting hole 22, and an end of the locking lever 19 close to the connecting groove 18 is disposed to extend into the connecting groove 18, and an end of the locking lever 19 far from the connecting groove 18 is disposed to extend out of the mounting hole 22. Confession locking lever 19 male constant head tank 23 is seted up to the top surface of connecting strip 17, and constant head tank 23 is close to the one end of keeping away from sewing machine body 2 in connecting strip 17, and gleitbretter 21 cover is established and is fixed in locking lever 19, gleitbretter 21 and mounting hole 22 middle part sliding connection, and the diameter of gleitbretter 21 equals with the aperture at mounting hole 22 middle part. The spring 20 is sleeved on the locking lever 19 and located in the middle of the mounting hole 22, and two ends of the spring 20 are respectively fixed on the side surface of the sliding piece 21 away from the connecting groove 18 and one end of the mounting hole 22 away from the connecting groove 18. When splicing the connecting plate 16, the worker needs to pull the locking lever 19, so that the end of the locking lever 19 close to the connecting groove 18 is retracted into the mounting hole 22, so that the connecting bar 17 slides into the connecting groove 18, when the locking lever 19 is opposite to the positioning groove 23, the locking lever 19 is released, the extruded spring 20 applies thrust to the sliding piece 21 through recovery deformation, so that the sliding piece 21 drives the locking lever 19 to move towards the connecting bar 17, and the end of the locking lever 19 extending into the connecting groove 18 is inserted into the positioning groove 23, thereby playing a role in locking the connecting plate 16 and the connecting bar 17.
Referring to fig. 5, in order to reduce the connection plate 16 from falling off, the vertical section of the connection groove 18 and the vertical section of the connection bar 17 are each provided in a dovetail shape.
The implementation principle of the sewing machine with the extensible table top in the embodiment of the application is as follows: when sewing the cloth with larger area, the first servo motor 6 is controlled, the output shaft of the first servo motor 6 drives the screw rod 7 to rotate, so that the slide block 8 slides along the mounting box 5, further, the turning angle of the extension board 4 is adjusted by matching with the hinged control rod 10, so that the extension board 4 is in a horizontal state, used for placing larger cloth, then the connecting plates 16 are drawn out from the containing grooves 15, the two connecting plates 16 are spliced to the two sides of the workbench 1 through the matching of the connecting grooves 18 and the connecting strips 17, then the second servo motor 12 is controlled, the output shaft of the second servo motor 12 drives the rotating shaft 13 to rotate, and then drive the upset of returning face plate 11, turn over the returning face plate 11 and be the horizontality, reach the effect that enlarges the area of extension board 4, reduced the condition that great cloth appears dropping when the sewing, and then reduced the skew condition of sewing direction to product quality has been improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a sewing machine of extending mesa, is including installing in sewing machine body (2) of workstation (1), wherein one end that sewing machine body (2) are close to workstation (1), its characterized in that: one end that sewing machine body (2) was kept away from in workstation (1) articulates there is extension board (4), workstation (1) bottom surface is equipped with the drive assembly who is used for adjusting extension board (4) rotation angle, drive assembly is connected with the bottom surface of extension board (4).
2. An extensible table sewing machine as claimed in claim 1, wherein: the driving assembly comprises a mounting box (5), a first servo motor (6), a lead screw (7) and a sliding block (8), wherein a connecting rod (9) which is vertically arranged is arranged on the bottom surface of the workbench (1), the mounting box (5) is horizontally arranged, one end of the mounting box is connected to the bottom end of the connecting rod (9), the mounting box (5) is close to an extension plate (4) and the length direction of the mounting box (5) is parallel to the length direction of the workbench (1), the top surface of the mounting box (5) is arranged in an open structure, the lead screw (7) is rotatably connected into the mounting box (5), the length direction of the lead screw (7) is parallel to the length direction of the mounting box (5), the sliding block (8) is slidably connected into the mounting box (5) and is in threaded connection with the lead screw (7), the first servo motor (6) is fixed on the side surface of the connecting rod (9) which deviates from the mounting box (5), the output shaft of first servo motor (6) passes connecting rod (9) and stretches into mounting box (5) and is connected with lead screw (7), slider (8) top surface articulates there is control lever (10), the one end that slider (8) were kept away from in control lever (10) is articulated with the bottom surface of extending board (4).
3. An extensible table sewing machine as claimed in claim 2, wherein: the extension plate (4) and the two ends parallel to the length direction of the workbench (1) are provided with extension components used for enlarging the area of the extension plate (4).
4. An extensible table sewing machine as claimed in claim 3, wherein: the extension subassembly includes returning face plate (11) and second servo motor (12), the length direction of returning face plate (11) is perpendicular with the length direction of extension board (4), one of them long limit of returning face plate (11) articulates in the side that extension board (4) are close to mounting box (5) through pivot (13) and hinge (14), one of them minor face that returning face plate (11) are close to extension board (4), second servo motor (12) are fixed in one side that extension board (4) kept away from workstation (1), the length direction of second servo motor (12) output shaft is parallel with the length direction of pivot (13), the output shaft of second servo motor (12) and the end connection of pivot (13).
5. An extensible table sewing machine according to claim 4, wherein: storage tank (15) have been seted up to the one end that returning face plate (11) are close to workstation (1), sliding connection has connecting plate (16) in storage tank (15), the length direction of connecting plate (16) is parallel with the length direction of workstation (1), workstation (1) both sides all are fixed with connecting strip (17), the length direction of connecting strip (17) is parallel with the length direction of workstation (1), one of them long limit of connecting plate (16) is seted up and is used for connecting strip (17) complex spread groove (18), the both ends of spread groove (18) communicate with each other with the both ends of connecting plate (16) respectively.
6. An extensible table sewing machine as claimed in claim 5, wherein: the side face of the connecting plate (16) is provided with a locking assembly for locking the connecting plate (16) and the connecting strip (17), and the locking assembly is positioned outside the accommodating groove (15) when the connecting plate (16) is positioned in the accommodating groove (15).
7. An extensible table sewing machine according to claim 6, wherein: the locking assembly comprises a locking rod (19), a spring (20) and a sliding piece (21), wherein a mounting hole (22) is formed in one side face of the connecting plate (16), the aperture in the middle of the mounting hole (22) is larger than the apertures in the two ends of the mounting hole (22), the mounting hole (22) is communicated with the connecting groove (18), the mounting hole (22) is close to one end, extending out of the accommodating groove (15), of the connecting plate (16), the locking rod (19) is connected to the mounting hole (22) in a sliding mode, the sliding piece (21) is sleeved and fixed on the locking rod (19), the sliding piece (21) is connected with the middle of the mounting hole (22) in a sliding mode, the diameter of the sliding piece (21) is equal to the aperture in the middle of the mounting hole (22), the spring (20) is sleeved on the locking rod (19), the two ends of the spring (20) are respectively fixed on the side face, away from the connecting groove (18), of the sliding piece (21), and one end, away from the connecting groove (18), of the mounting hole (22), and the top surface of the connecting strip (17) is provided with a positioning groove (23) for inserting the locking rod (19).
8. An extensible table sewing machine as claimed in claim 5, wherein: the vertical sections of the connecting groove (18) and the connecting strip (17) are arranged in a dovetail shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611992.7U CN214458747U (en) | 2021-03-25 | 2021-03-25 | Sewing machine with extensible table top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611992.7U CN214458747U (en) | 2021-03-25 | 2021-03-25 | Sewing machine with extensible table top |
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| Publication Number | Publication Date |
|---|---|
| CN214458747U true CN214458747U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120611992.7U Active CN214458747U (en) | 2021-03-25 | 2021-03-25 | Sewing machine with extensible table top |
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| CN (1) | CN214458747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323629A (en) * | 2022-08-17 | 2022-11-11 | 浙江致居软装设计有限公司 | Curtain hidden-seam non-open-line full dress process |
| CN115363362A (en) * | 2022-09-17 | 2022-11-22 | 广西商业技师学院 | Special lotus workstation of beating of central kitchen |
-
2021
- 2021-03-25 CN CN202120611992.7U patent/CN214458747U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323629A (en) * | 2022-08-17 | 2022-11-11 | 浙江致居软装设计有限公司 | Curtain hidden-seam non-open-line full dress process |
| CN115323629B (en) * | 2022-08-17 | 2023-04-28 | 浙江致居软装设计有限公司 | Curtain blind seam non-open line dress process |
| CN115363362A (en) * | 2022-09-17 | 2022-11-22 | 广西商业技师学院 | Special lotus workstation of beating of central kitchen |
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