Wrinkle-resistant school uniform and preparation process thereof

Abstract

This application discloses a wrinkle-resistant school uniform and its production process, which relates to the field of clothing production technology. The uniform comprises a top, trousers, and two decorative strips disposed on the same side of the trousers. The decorative strips comprise an inner layer and an outer layer that are sewn together. Selvedge strips are disposed on both sides of the inner layer for sewing and locking the outer layer to the side of the inner layer away from the trousers. This application has the effect of ensuring the flatness of the portion of the trousers where the two decorative strips are sewn.

Description

Technical Field

[0001] The present application relates to the technical field of clothing preparation, and in particular to a wrinkle-resistant school uniform and a preparation process thereof. Background Art

[0002] School uniforms are a uniform style of student clothing prescribed by the school. In order to make it look less monotonous, multiple side stripes are added to the pants as decoration.

[0003] During the uniform production process, the decorative strips are first cut to the appropriate width and wound into rolls. Multiple rolls of decorative strips are then placed on a rack, and one end of the strip is pulled to the head of a sewing machine to be sewn to the uniform fabric. Because some uniforms have two decorative strips, to improve production efficiency, a sewing machine is often used to sew both strips simultaneously. A sewing machine primarily consists of a head, a base, a transmission, and accessories. During the process, the uniforms are transported on the base, pulling the two rolls of decorative strips together to unwind simultaneously, achieving the goal of simultaneously sewing the two strips onto the uniform.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the following defects exist: when two rolls of decorative strips are rotated and mounted on the same rack for synchronous unwinding, when the initial number of winding turns of the two rolls of decorative strips is different, the unwinding lengths of the two synchronously rotating rolls of decorative strips will be different, and the tensioning degrees of the two decorative strips will be different, resulting in wrinkles on the part of the school uniform where the two decorative strips are sewn, affecting the production quality of the school uniform. Summary of the Invention

[0005] In order to improve the problem of wrinkles on the part of the school uniform with two decorative strips due to the different tensioning degrees of the two decorative strips, the present application provides a wrinkle-resistant school uniform and a preparation process thereof.

[0006] In the first aspect, the present application provides an anti-wrinkle school uniform, which adopts the following technical solution:

[0007] A wrinkle-resistant school uniform comprises a top, trousers, and two decorative strips arranged on the same side of the trousers. The decorative strips comprise an inner layer and an outer layer that are overlapped and sewn together. Both sides of the inner layer are provided with locking strips for sewing and locking the outer layer on the side of the inner layer away from the trousers.

[0008] By adopting the above technical solution, the decorative strip is formed by laminating and sewing the inner and outer layers, which increases the thickness of the decorative strip and reduces its elasticity. When the decorative strip is sewn onto the trousers, it is tensioned and unwound. Due to its low elasticity, the decorative strip is not easily stretched, which ensures that the two decorative strips have the same original length when sewn onto the trousers, minimizing the risk of wrinkles in the area where the two decorative strips are sewn. At the same time, the hemming strips on both sides of the inner layer not only lock the outer layer to the inner layer, but also reinforce the sides of the decorative strip, making it less likely to stretch and further ensuring the smoothness of the area where the two decorative strips are sewn.

[0009] In a second aspect, the present application provides a process for preparing wrinkle-resistant school uniforms, which adopts the following technical solution:

[0010] A process for preparing wrinkle-resistant school uniforms, based on the above-mentioned wrinkle-resistant school uniforms, comprises the following steps:

[0011] S1, making and installing the decorative strip roll, overlapping the inner layer and the outer layer, and sewing two sets of lock edge strips along the length direction of the inner layer to form a decorative strip group, winding the decorative strip group into a roll and rotating it on the sewing machine base;

[0012] S2, slitting the decorative strips, unwinding the decorative strip group in step S1, and cutting the decorative strip group in the unwinding process along the extending direction of the gap between the two sets of lock edge strips to form two decorative strips;

[0013] S3, flattening the decorative strips, flattening the two decorative strips in step S2;

[0014] S4, sewing decorative strips, sewing the two decorative strips in step S3 onto the trousers at intervals and in parallel using a sewing machine head.

[0015] By adopting the above technical solution, two sets of overlock strips are sewn along the length of the inner surface layer, so that the two decorative strips are connected to form a decorative strip group. When the two decorative strips are unwound on the sewing machine base, the unwound lengths of the two decorative strips per unit time are the same, thereby ensuring that the two decorative strips are tensioned at the same level during the sewing process. Before the decorative strips are sewn onto the trousers, the unwound portion of the decorative strip group is first cut to form two separate decorative strips. The cut two decorative strips are then flattened to ensure the flatness of the decorative strips. Finally, the sewing machine head is used to sew the two flattened decorative strips onto the trousers at intervals, effectively ensuring the flatness of the portion of the trousers where the two decorative strips are sewn.

[0016] Optionally, a transmission roller for rotating and mounting the decorative strip group is provided on the sewing machine base, and a tensioning roller, a lifting roller and a lower pressure roller are sequentially rotated on the side of the transmission roller close to the sewing machine head. The decorative strip is sequentially wound around the tensioning roller, the lifting roller, the lower pressure roller and the sewing machine head, and a slitting knife for cutting the decorative strip group is provided on the sewing machine base, and the slitting knife is arranged in contact with the lifting roller.

[0017] By adopting the above technical solution, the decorative strip group is rotatably mounted on the sewing machine base through the transmission roller, and one end of the decorative strip group is sequentially wound around the tensioning roller, the lifting roller and the lower pressure roller and extends to the sewing machine head. During the sewing process, the sewing machine head will pull the decorative strip group for unwinding. Since the slitting knife abuts against the lifting roller, the decorative strip group is cut into two decorative strips by the slitting knife during the process of being pulled and unwinding. The two cut decorative strips are sewn on the trousers of equal lengths at the same unwinding speed, effectively ensuring the flatness of the part of the trousers where the two decorative strips are sewn.

[0018] Optionally, a flattening mechanism for flattening the decorative strip is provided between the sewing machine head and the lower pressing roller, and the flattening mechanism is provided on the sewing machine base.

[0019] By adopting the above technical solution, the setting of the lower pressure roller allows the cut decorative strip to be tensioned, and the tensioned decorative strip is flattened by the flattening mechanism, thereby ensuring the flatness of the decorative strip and further effectively ensuring the flatness of the part of the trousers where two decorative strips are sewn.

[0020] Optionally, the flattening mechanism includes two flattening rollers arranged to rotate in opposite directions and a steam component arranged on the sewing machine base, the decorative strip is located between the two flattening rollers, and both of the flattening rollers are in rotational contact with the decorative strip.

[0021] By adopting the above technical solution, the steam component moistens the decorative strip, and then the moistened decorative strip enters between the two flattening rollers. The two flattening rollers abut against the two sides of the decorative strip, so that the decorative strip is quickly flattened under the joint action of the steam component and the flattening rollers. The two flattening rollers rotate in opposite directions to realize the transmission of the flattened decorative strip.

[0022] Optionally, the steam component includes a steam box arranged on the sewing machine base and a steam pipe arranged in the steam box, the flattening roller is rotatably arranged in the steam box, the steam pipe is located on the side of the flattening roller close to the lower pressure roller, and windows for transmitting the decorative strip are provided on both side walls of the steam box parallel to the flattening roller.

[0023] By adopting the above technical solution, the steam pipe is placed inside the steam box, effectively preventing steam from escaping and allowing steam to be used as much as possible to moisten the decorative strip, achieving energy-saving and environmentally friendly effects. The steam pipe is located on the side of the flattening roller near the lower pressing roller. After the decorative strip enters through the window on one side of the steam box, it is first moistened by the steam pipe, and then flattened by the flattening roller, thereby achieving the effect of effectively flattening the decorative strip. The flattened decorative strip then passes through the window on the other side of the steam box and enters the sewing machine head for sewing.

[0024] Optionally, two slitting knives are provided, and the two slitting knives are spaced apart and abutted against the gap between the two groups of the lock edge strips along the length direction of the lifting roller. A waste recovery mechanism is provided between the lifting roller and the lower pressure roller, and the waste recovery mechanism is located on the sewing machine base.

[0025] By adopting the above technical solution, the two slitting knives simultaneously cut the decorative strip assembly, resulting in two decorative strips and a waste strip. The waste strip is located between the two decorative strips and can be recycled by the waste recovery mechanism. When the two decorative strips need to be sewn onto the trousers at intervals, the two decorative strips only need to be transported in a straight line, so that the two decorative strips are sewn flat and at intervals onto the trousers, minimizing the risk of the decorative strips bending and causing unevenness in the portion of the trousers where the two decorative strips are sewn.

[0026] Optionally, the waste recycling mechanism includes a recycling box arranged on the sewing machine base and a material guide assembly arranged on the sewing machine base, the recycling box is located between the lifting roller and the lower pressure roller, and the material guide assembly is arranged at the opening of the recycling box.

[0027] By adopting the above technical solution, the material guide assembly can accelerate the transmission of the waste strips, so that while the decorative strips are being transmitted, the material guide assembly drives the waste strips to be synchronously transmitted into the recycling box, thereby avoiding the accumulation of waste strips as much as possible and affecting the smooth transmission of the decorative strips, thereby ensuring the flatness of the part of the pants where the two decorative strips are sewn.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. Two sets of overlock strips are sewn along the length of the inner surface layer, so that the two decorative strips are connected to form a decorative strip group. When the two decorative strips are unwound on the sewing machine base, the unwound lengths of the two decorative strips per unit time are the same, thereby ensuring that the two decorative strips are tensioned at the same level during the sewing process. Before the decorative strips are sewn onto the trousers, the unwound portion of the decorative strip group is first cut to form two separate decorative strips. The two cut decorative strips are then flattened to ensure the flatness of the decorative strips. Finally, the sewing machine head is used to sew the two flattened decorative strips onto the trousers at intervals, effectively ensuring the flatness of the portion of the trousers where the two decorative strips are sewn.

[0030] 2. Two slitting knives simultaneously cut the decorative strip assembly into two decorative strips and a waste strip. The waste strip is located between the two decorative strips and can be recycled by a waste recycling mechanism. When two decorative strips need to be sewn onto the trousers at intervals, the two decorative strips only need to be transported in a straight line, so that the two decorative strips are sewn flat and at intervals, minimizing the risk of the decorative strips bending and causing unevenness in the portion of the trousers where the two decorative strips are sewn.

[0031] 3. The material guide assembly can accelerate the transmission of the waste strips, so that while the decorative strips are being transmitted, the material guide assembly drives the waste strips to be synchronously transmitted into the recycling box, avoiding as much as possible the accumulation of waste strips that affects the smooth transmission of the decorative strips, and ensuring the flatness of the part of the trousers where the two decorative strips are sewn. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of an anti-wrinkle school uniform in an embodiment of the present application.

[0033] Figure 2 It is a schematic structural diagram of the inner layer, outer layer and edge lock strip in the embodiment of the present application.

[0034] Figure 3 It is a schematic flow chart of a process for preparing a wrinkle-resistant school uniform in an embodiment of the present application.

[0035] Figure 4 It is a structural schematic diagram of the decorative strip, sewing machine base, decorative strip group, sewing machine head, transmission roller, tensioning roller and lower pressure roller in the embodiment of the present application.

[0036] Figure 5 It is a structural schematic diagram of the sewing machine base, sewing machine head, transmission roller, tensioning roller, lifting roller, lower pressure roller, slitting knife, flattening mechanism and waste recovery mechanism in the embodiment of the present application.

[0037] Figure 6 It is a structural schematic diagram of the decorative strip, transmission roller, tensioning roller, lifting roller, lower pressure roller, slitting knife and flattening mechanism in the embodiment of the present application.

[0038] Figure 7 It is a schematic cross-sectional structural diagram of the flattening roller and steam assembly in the embodiment of the present application.

[0039] Figure numerals: 1. Top; 2. Pants; 3. Decorative strip; 31. Inner layer; 32. Outer layer; 4. Overlock strip; 5. Sewing machine base; 6. Decorative strip group; 7. Sewing machine head; 8. Drive roller; 9. Tensioning roller; 10. Lifting roller; 11. Lower pressure roller; 12. Slitting knife; 13. Flattening mechanism; 131. Flattening roller; 132. Steam component; 1321. Steam box; 1322. Steam pipe; 14. Window; 15. Waste recycling mechanism; 151. Recovery box; 152. Material guide assembly; 16. Support plate; 17. Servo motor; 18. Support roller; 19. Feed roller; 20. Drive motor. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-7 This application is described in further detail.

[0041] The embodiments of the present application disclose a wrinkle-resistant school uniform.

[0042] Reference Figure 1 and Figure 2 A wrinkle-resistant school uniform includes a top 1, trousers 2, and two decorative strips 3 arranged on the same side of the trousers 2. The decorative strip 3 includes an inner layer 31 and an outer layer 32 that are overlapped and sewn together. Both sides of the inner layer 31 are provided with a locking strip 4 for sewing and locking the outer layer 32 to the side of the inner layer 31 away from the trousers 2.

[0043] The wrinkle-resistant school uniform of the present application embodiment is implemented as follows: the decorative strip 3 is formed by overlapping and sewing an inner layer 31 and an outer layer 32, which increases the thickness of the decorative strip 3 and reduces its elasticity. When the decorative strip 3 is sewn onto the trousers 2, the decorative strip 3 is tensioned and unwound. Due to the low elasticity of the decorative strip 3, the decorative strip 3 is not easily stretched, and thus the two decorative strips 3 are sewn onto the trousers 2 with the same original length, thus minimizing the occurrence of wrinkles in the portion of the trousers 2 where the two decorative strips 3 are sewn. At the same time, the locking strips 4 on both sides of the inner layer 31 not only lock the outer layer 32 to the inner layer 31, but also reinforce the two sides of the decorative strip 3, making it difficult for the two sides of the decorative strip 3 to stretch, further ensuring the flatness of the portion of the trousers 2 where the two decorative strips 3 are sewn.

[0044] The embodiments of the present application also disclose a process for preparing wrinkle-resistant school uniforms.

[0045] Reference Figure 3 The preparation process of the wrinkle-resistant school uniform comprises the following steps:

[0046] S1, production and installation of the decorative strip roll 3: overlap the inner layer 31 and the outer layer 32, and sew two sets of hemming strips 4 along the length of the inner layer 31 to form a decorative strip group 6. The decorative strip group 6 is wound into a roll and rotated and mounted on the sewing machine base 5;

[0047] S2, cutting the decorative strips 3, unwinding the decorative strip group 6 in step S1, and cutting the decorative strip group 6 in the unwinding process along the extending direction of the gap between the two sets of lock edge strips 4 to form two decorative strips 3;

[0048] S3, flattening the decorative strips 3, flattening the two decorative strips 3 in step S2;

[0049] S4, sewing the decorative strips 3, sewing the two decorative strips 3 in step S3 onto the trousers 2 at intervals and in parallel through the sewing machine head 7.

[0050] Two sets of hemming strips 4 are sewn along the length of the inner layer 31, so that the two decorative strips 3 are rolled and connected into a decorative strip group 6. When the two decorative strips 3 are unwound on the sewing machine base 5, the unwound lengths of the two decorative strips 3 are the same per unit time, thereby ensuring that the two decorative strips 3 are tensioned at the same level during the sewing process. Before the decorative strips 3 are sewn onto the trousers 2, the unwound portion of the decorative strip group 6 is first cut to form two separate decorative strips 3. The cut two decorative strips 3 are then flattened to ensure the flatness of the decorative strips 3. Finally, the sewing machine head 7 is used to sew the two flattened decorative strips 3 onto the trousers 2 at intervals, effectively ensuring the flatness of the portion of the trousers 2 where the two decorative strips 3 are sewn.

[0051] Reference Figure 4 and Figure 5 On the sewing machine base 5, two support plates 16 are provided on one side of the sewing machine head 7 at intervals of screws. A transmission roller 8 is rotatably mounted between the two support plates 16. The length direction of the transmission roller 8 is perpendicular to the feeding direction of the sewing machine head 7. The decorative strip group 6 is sleeved on the transmission roller 8. The decorative strip group 6 is rotatably mounted on the sewing machine base 5 through the transmission roller 8. A servo motor 17 for driving the transmission roller 8 is fixed to one of the support plates 16 through a mounting seat. A tensioning roller 9, a lifting roller 10, and a lower pressure roller 11 are rotatably provided on the side of the transmission roller 8 close to the sewing machine head 7. The tensioning roller 9, the lifting roller 10, and the lower pressure roller 11 are arranged at intervals of different heights, and all three are arranged parallel to the transmission roller 8. The decorative strip 3 is wound around the tensioning roller 9, the lifting roller 10, the lower pressing roller 11 and the sewing machine head 7 in sequence. A flattening mechanism 13 for flattening the decorative strip 3 is provided between the sewing machine head 7 and the lower pressing roller 11. The flattening mechanism 13 is provided on the sewing machine base 5.

[0052] Since the two decorative strips 3 on the trousers 2 are sewn at intervals, Figure 5 and Figure 6 A support roller 18 is mounted on the sewing machine base 5 via a bracket. The support roller 18 is arranged parallel to the drive roller 8 and positioned between the lifting roller 10 and the tensioning roller 9, above the lifting roller 10. Two slitting knives 12 are fixedly attached to the support roller 18 at intervals along its length, used to cut the decorative strip assembly 6. The distance between the two slitting knives 12 is equal to the width of the gap between the two decorative strips 3 on the trousers 2. Both slitting knives 12 are tilted toward the lifting roller 10 and abut the lifting roller 10. The two slitting knives 12 abut the gap between the two sets of hemming strips 4 at intervals along the length of the lifting roller 10. As the decorative strip assembly 6 is transported on the lifting roller 10, it is cut into two decorative strips 3 and a scrap strip. The scrap strip is located between the two decorative strips 3. The two decorative strips 3 are then transported toward the sewing machine head 7 by the action of the lower pressure roller 11.

[0053] In order to avoid the waste strips from affecting the stable transmission of the decorative strip 3 as much as possible, refer to Figure 5 and Figure 6 A waste material recovery mechanism 15 is provided between the lifting roller 10 and the lower pressing roller 11. The waste material recovery mechanism 15 is located on the sewing machine base 5. The waste material recovery mechanism 15 includes a recovery box 151 provided on the sewing machine base 5 and a material guide assembly 152 provided on the sewing machine base 5. The recovery box 151 is embedded in the sewing machine base 5 and is located between the lifting roller 10 and the lower pressing roller 11. The material guide assembly 152 is provided at the opening of the recovery box 151. The waste material strips bypass the lifting roller 10 and fall into the recovery box 151. Driven by the material guide assembly 152, the waste material strips can quickly fall into the recovery box 151.

[0054] In the examples of this application, refer to Figure 5 and Figure 6 The material guide assembly 152 comprises two guide rollers rotatably mounted at the opening of the recovery box 151 and a micromotor for driving the two guide rollers in opposite directions. The guide rollers are rotatably supported on the sewing machine base 5 via a vertical plate, and the micromotor is mounted on the vertical plate. Both guide rollers are arranged parallel to the transmission roller 8. The waste strip is positioned between the two guide rollers, which are respectively pressed against either side of the waste strip. The two guide rollers rotate in opposite directions, driving the waste strip to fall quickly into the recovery box 151. This minimizes the accumulation of waste strips that could affect the smooth transport of the decorative strip 3, thereby ensuring the smoothness of the portion of the trousers 2 where the two decorative strips 3 are sewn.

[0055] In other embodiments, the material guide assembly 152 includes two sets of air blow tubes arranged on the sewing machine base 5, and the two sets of air blow tubes are respectively located on both sides of the waste strip. The air blow tubes blow toward the opening of the recycling box 151, thereby accelerating the speed at which the waste strip falls into the recycling box 151.

[0056] In order to improve the flatness of the trim strip 3 after cutting, it is necessary to use a flattening mechanism 13 to flatten the trim strip 3 after cutting. Figure 6 and Figure 7 The flattening mechanism 13 includes two counter-rotating flattening rollers 131 and a steam assembly 132 mounted on the sewing machine base 5. The flattening rollers 131 are arranged parallel to the drive roller 8. The steam assembly 132 includes a steam box 1321 mounted on the sewing machine base 5 and a steam pipe 1322 mounted within the steam box 1321. The flattening rollers 131 are rotatably mounted within the steam box 1321. The steam pipe 1322 is located on the side of the flattening roller 131 near the lower pressing roller 11 and sprays steam toward the flattening roller 131. Windows 14 for transmitting the decorative strip 3 are provided on both sidewalls of the steam box 1321, which is arranged parallel to the flattening roller 131. The decorative strip 3 passes through the two windows 14 of the steam box 1321 and is located between the two flattening rollers 131. Both flattening rollers 131 are in rotational contact with the decorative strip 3. A driving motor 20 for driving the flattening roller 131 to rotate and transmit the decorative strip 3 is fixedly connected to the side wall of the steam box 1321 via a motor bracket.

[0057] To avoid the decorative strip 3 being scratched and worn by the window 14 of the steam box 1321 as much as possible, refer to Figure 6 and Figure 7 Two feed rollers 19 are rotatably mounted on the steam box 1321 at both windows 14. The feed rollers 19 are arranged parallel to the drive roller 8 and rotate in opposite directions. The decorative strip 3 is sequentially passed through the two sets of feed rollers 19, and the decorative strip 3 is positioned between the two feed rollers 19 in the same set. The two feed rollers 19 in the same set abut against either side of the decorative strip 3. The two feed rollers 19 rotating in opposite directions drive the decorative strip 3 toward the sewing machine head 7. The two sets of feed rollers 19 not only provide stable guidance for the decorative strip 3 during transport, but also reduce wear on the decorative strip 3 by the edges of the windows 14, making the decorative strip 3 smooth overall and ensuring the smoothness of the portion of the trousers 2 where the two decorative strips 3 are sewn.

[0058] The manufacturing process for wrinkle-resistant school uniforms according to the present embodiment is as follows: Two sets of hemming strips 4 are sewn along the length of the inner layer 31, so that the two decorative strips 3 are rolled and connected into a decorative strip group 6, which is then rotated and mounted on the sewing machine base 5 via a transmission roller 8. The decorative strips 3 are then sequentially wound around a tensioning roller 9, a lifting roller 10, and a lower pressure roller 11, and are passed through a steam box 1321 and extended to the sewing machine head 7. The decorative strips 3 are stably transported by the combined action of the transmission roller 8, the two flattening rollers 131, and the sewing machine head 7.

[0059] As the decorative strip group 6 is transported on the lifting roller 10, the decorative strip group 6 is cut into two decorative strips 3 and a waste strip by two slitting knives 12. The two decorative strips 3 are stably transported into the steam box 1321 under the action of the lower pressure roller 11, and the waste strip is quickly transported and stored in the recovery box 151 under the action of the material guide assembly 152, so that there is a gap between the two decorative strips 3.

[0060] The two decorative strips 3 pass smoothly through the steam box 1321 under the action of the feed roller 19. The decorative strips 3 are first moistened through the steam pipe 1322, and then the moistened decorative strips 3 are flattened by the flattening roller 131, thereby achieving the effect of efficiently flattening the decorative strips 3. The flattened decorative strips 3 pass through the window 14 on the other side of the steam box 1321 and enter the sewing machine head 7 for sewing, so that the two decorative strips 3 are sewn flatly and at intervals on the trousers 2, effectively ensuring the flatness of the part of the trousers 2 where the two decorative strips 3 are sewn.

[0061] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A process for preparing a wrinkle-resistant school uniform, comprising a top (1), trousers (2), and two decorative strips (3) arranged on the same side of the trousers (2), characterized in that: The decorative strip (3) comprises an inner layer (31) and an outer layer (32) which are overlapped and sewn together, and a hemming strip (4) is provided on both sides of the inner layer (31) for sewing and locking the outer layer (32) on the side of the inner layer (31) away from the trousers (2). The decorative strip is characterized in that it comprises the following steps: S1, making and installing the decorative strip (3) roll, overlapping the inner layer (31) and the outer layer (32), and sewing two sets of hemming strips (4) along the length direction of the inner layer (31) to form a decorative strip group (6), winding the decorative strip group (6) into a roll and rotating it on the sewing machine base (5); S2, cutting the decorative strips (3), unwinding the decorative strip group (6) in step S1, and cutting the decorative strip group (6) in the unwinding process along the extending direction of the gap between the two sets of lock edge strips (4) to form two decorative strips (3); S3, flattening the decorative strips (3), flattening the two decorative strips (3) in step S2; S4, sewing the decorative strips (3), sewing the two decorative strips (3) in step S3 onto the trousers (2) in a spaced and parallel manner using a sewing machine head (7); The sewing machine base (5) is provided with a transmission roller (8) for rotating and mounting the decorative strip group (6); a tensioning roller (9), a lifting roller (10) and a lower pressure roller (11) are sequentially rotatably provided on the side of the transmission roller (8) close to the sewing machine head (7); the decorative strip (3) is sequentially wound around the tensioning roller (9), the lifting roller (10), the lower pressure roller (11) and the sewing machine head (7); a slitting knife (12) for cutting the decorative strip group (6) is provided on the sewing machine base (5); the slitting knife (12) is arranged in contact with the lifting roller (10); A flattening mechanism (13) for flattening the decorative strip (3) is provided between the sewing machine head (7) and the lower pressing roller (11), and the flattening mechanism (13) is provided on the sewing machine base (5); The flattening mechanism (13) comprises two flattening rollers (131) arranged to rotate in opposite directions and a steam component (132) arranged on the sewing machine base (5).

2. The process for preparing wrinkle-resistant school uniforms according to claim 1, characterized in that: The decorative strip (3) is located between the two flattening rollers (131), and both of the flattening rollers (131) are in rotational contact with the decorative strip (3).

3. The process for preparing wrinkle-resistant school uniforms according to claim 2, characterized in that: The steam assembly (132) includes a steam box (1321) arranged on the sewing machine base (5) and a steam pipe (1322) arranged in the steam box (1321); the flattening roller (131) is rotatably arranged in the steam box (1321); the steam pipe (1322) is located on a side of the flattening roller (131) close to the lower pressing roller (11); and windows (14) for transmitting the decorative strip (3) are provided on both side walls of the steam box (1321) and the flattening roller (131) arranged parallel to each other.

4. The process for preparing wrinkle-resistant school uniforms according to claim 1, characterized in that: Two slitting knives (12) are provided, and the two slitting knives (12) are spaced apart and abutted against the gap between the two groups of the edgelock strips (4) along the length direction of the lifting roller (10). A waste recycling mechanism (15) is provided between the lifting roller (10) and the lower pressure roller (11), and the waste recycling mechanism (15) is located on the sewing machine base (5).

5. The process for preparing wrinkle-resistant school uniforms according to claim 4, characterized in that: The waste material recycling mechanism (15) comprises a recycling box (151) arranged on the sewing machine base (5) and a material guide assembly (152) arranged on the sewing machine base (5); the recycling box (151) is located between the lifting roller (10) and the lower pressing roller (11); and the material guide assembly (152) is arranged at the opening of the recycling box (151).

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