Garment seaming and overlock process and overlock and seaming machine

Abstract

The present application relates to a garment welt sewing process and edge pressing sewing machine and welt sewing machine, the garment welt sewing process comprises edge pressing sewing and welt sewing steps in sequence. The present application also provides corresponding edge pressing sewing machine and welt sewing machine. The garment welt sewing process can cover the welt to eliminate the foreign body feeling, ensure that the sewing does not affect the appearance of the clothes, and the provided edge pressing sewing machine and welt sewing machine can stably and efficiently realize the welt sewing operation of the garment.

Description

Technical Field

[0001] This invention relates to the field of garment processing technology and processing equipment, and particularly to garment seam binding technology and edge pressing and sewing machines. Background Technology

[0002] Clothing is an integral part of human civilization, constantly evolving and developing since ancient times. Over time, clothing has transcended its function of simply covering the body, becoming a means of expressing culture, social status, individuality, and fashion. This article will explore the technological evolution behind clothing, covering its development from early handcrafting to modern high-tech production.

[0003] The earliest clothing was made by people using animal and plant hides, leaves, and bark. These primitive garments were entirely handmade, designed and made according to the needs of the climate and environment. Technological advancements mainly occurred in material selection and decoration, such as improvements in leather processing and dyeing techniques.

[0004] With the development of agriculture, the textile industry began to emerge. The earliest textile machinery was manual, but over time, more efficient spinning and weaving machines appeared. Important technological advancements during this period included improvements in spinning, weaving, and dyeing, which increased the speed and quality of clothing production.

[0005] Today, digital technology has profoundly impacted garment manufacturing. Computer-aided design (CAD) and computer-aided manufacturing (CAM) have made garment design and production more precise and efficient. However, in this context of rapid development, people are increasingly pursuing the smoothness and aesthetics of garments. Some manufacturers choose to use fabric strips to cover the internal seams of garments, but this can lead to workers being overwhelmed and inefficient during processing. Furthermore, improper finishing techniques in the final sewing step can result in visible seams on the garment's surface, affecting its appearance. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a garment seam binding process, which covers the seam strip to eliminate the foreign object feeling while ensuring that the sewing does not affect the appearance of the garment. It also provides an edge pressing sewing machine and an edge binding sewing machine to achieve stable and efficient edge binding of garment seam strips.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] The garment seam binding process includes the following steps:

[0009] Pressing and sewing: Take the first and second fabrics to be sewn, and take the binding strip. Stack the binding strip, the first fabric and the second fabric in sequence, so that the edges of the first and second fabrics to be sewn are aligned, and the binding strip is parallel to the edges to be sewn. Use the sewing thread to pass back and forth through the binding strip, the first fabric and the second fabric to sew and form a seam strip.

[0010] Binding and sewing: Lay the first and second fabrics flat, then turn the unstitched edge of the binding strip over the seam strip and place the unstitched edge of the binding strip against the second fabric. Fold the second fabric outward along the unstitched edge of the binding strip to form a folded tip. After passing the thread through the binding strip, ensure that the thread passes through the folded tip without penetrating the two layers of fabric formed by the folding of the second fabric, and sew back and forth.

[0011] This process covers the seam strips to eliminate the feeling of foreign objects, while ensuring that the binding seam does not penetrate the fabric to reach the outside of the seam, thus ensuring the appearance of the garment.

[0012] Preferably, the edge-pressing and sewing step also includes edge trimming, which involves cutting the fabric from the edge to the sewing position of the first and second fabrics in the width direction to reduce the width of the edge to be sewn, reduce the feeling of foreign objects, improve wearing comfort, and at the same time, the narrower edge to be sewn helps to reduce the difficulty of the edge-binding operation.

[0013] As a preferred option, the edge pressing and binding stitching adopts a single-needle three-thread process. This edge-locking process is more complete and easy to adjust. At the same time, both ends of the binding strip adopt a single-needle three-thread process, which increases the tensile strength of the strip.

[0014] The edge-sealing machine includes a first machine head and a first sewing table. The first machine head is mounted on the first sewing table. The first machine head includes a first needle and a first presser foot. The first needle is fixedly mounted on the power output end of the first machine head. The first presser foot is suspended on the first machine head and its bottom surface can abut against the first sewing table. The first presser foot has a first needle opening for the reciprocating movement of the first needle. The first presser foot has a guide hole inside and a material outlet hole in the middle of its bottom. The first needle opening extends inward from the side of the presser foot. The guide hole and the material outlet hole are connected to the first needle opening. The binding strip enters the first presser foot through the guide hole and exits through the material outlet hole.

[0015] When sewing three layers of fabric, simply pressing down the top and bottom layers does not adequately control the placement of the middle layer. This invention addresses this by designing a presser foot with guide holes to position the binding strip, and then using the presser foot to press down the fabric to be sewn, thus stabilizing and fixing the three layers and ensuring the quality of the sewing.

[0016] Preferably, the first presser foot is rectangular in shape, the guide hole is square, and the front end of the first presser foot is bent upward. Such a first presser foot has a simple manufacturing process, and the square guide hole can reliably guide the edge banding strip.

[0017] Preferably, the first machine head also includes a cutter, which is fixedly installed at the power output end of the first machine head. The cutting edge of the cutter is parallel to the extension direction of the guide hole of the first presser foot. The cutter is positioned in front of the opening of the first needle. Due to the use of the overlock sewing process, the sewing thread will cover three sides of the sewing strip. The cutter needs to cut off the edge to be sewn along the edge of the first presser foot before the machine sews, otherwise it will cut the sewing thread. The power source of the cutter is synchronized with the first needle, which reduces the complexity of the equipment, facilitates adjustment, and improves work efficiency.

[0018] Preferably, the device also includes a tape feeding assembly, which includes a tape accumulator, a tape feeding bracket, and a guide wheel. The tape feeding bracket is fixedly connected to the first sewing table. The tape accumulator is rotatably mounted at one end of the tape feeding bracket, and the guide wheel is rotatably mounted at the first sewing head near the first needle. The tape accumulator and the guide wheel are parallel to each other around their axes. The tape feeding assembly allows the binding strip to enter the sewing position smoothly and stably, making the feeding smoother and improving work efficiency.

[0019] Furthermore, the feeding assembly also includes a power box, a drive wheel, and an idler wheel. The power box is fixedly connected to the first sewing table. The drive wheel is installed on the power output end of the power box. There are two idler wheels, which are rotatably mounted on the power box. The drive wheel is located between the two idler wheels. The binding strip is passed around the idler wheels and the drive wheel respectively. The power box controls the rotation of the drive wheel to assist in feeding, which improves the automation level of the equipment and can further improve work efficiency.

[0020] The overlock sewing machine includes a second machine head and a second sewing table. The second machine head includes a second needle and a second presser foot. The second needle is fixedly installed on the power output end of the second machine head. The second presser foot is suspended on the second machine head and its bottom surface can abut against the second sewing table. The second presser foot is provided with a second needle opening for the reciprocating movement of the second needle. The second presser foot includes a base plate and a guide plate. The guide plate is installed on the base plate and is parallel to the long side of the base plate. The guide plate can extend and retract laterally on the base plate.

[0021] When sewing the binding strip and the second fabric, the worker holds the fabric with one hand and pulls the binding strip with the other, making it difficult to control the direction of the stitching. This invention designs a presser foot with a guide plate, which confines the stitching strip between the presser foot and the guide plate, ensuring that the stitching does not deviate from the binding strip during sewing, reducing operational difficulty and improving work efficiency.

[0022] Preferably, a stop bar is also included. The stop bar is parallel to the second presser foot and fixed to the side of the second sewing table near the opening of the second needle. The stop bar can abut against the folded tip and, together with the guide plate and presser foot, form two guide points, which further restricts the direction of the sewing thread and improves work efficiency.

[0023] In summary, this garment seam binding process covers the seam strips to eliminate any foreign object feeling while ensuring that the seam does not affect the appearance of the garment. Furthermore, the provided edge-pressing and binding machines can stably and efficiently perform seam binding operations. Attached Figure Description

[0024] The invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the edge-pressing and stitching structure of the embodiment described above;

[0026] Figure 2 This is a schematic diagram of the edge-sealing structure of the embodiment described above;

[0027] Figure 3 This is a schematic diagram of the edge-pressing and sewing machine structure according to the embodiment;

[0028] Figure 4 This is an enlarged view of the edge-sealing machine of the embodiment described;

[0029] Figure 5 This is a schematic diagram of the open presser foot structure of the embodiment described above;

[0030] Figure 6 This is a bottom view of the open-end presser foot structure of the embodiment described above;

[0031] Figure 7 This is a schematic diagram of the edge-sealing machine structure according to the embodiment;

[0032] Figure 8 This is a schematic diagram of the guide foot structure of the embodiment described above;

[0033] Among them, the components are: binding strip-a, first fabric-b, second fabric-c, pressing seam-d, binding seam-e, first sewing table-1, first machine head-2, first needle-21, first presser foot-22, guide hole-221, material outlet-222, first needle opening-23, cutter-3, belt feed assembly-4, belt storage wheel-41, belt feed bracket-42, idler wheel-43, drive wheel-44, power box-45, guide wheel-46, support rod-461, second sewing table-5, second machine head-6, second needle-61, second presser foot-62, base plate-621, guide plate-622, second needle opening-65, and stop bar-7. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] The garment seam binding process includes the following steps:

[0036] Edge pressing and sewing: Take the first fabric b and the second fabric c that need to be sewn, and take the binding strip a. Overlap the binding strip a, the first fabric b and the second fabric c in sequence, so that the edges of the first fabric b and the second fabric c to be sewn are aligned, and at the same time make the binding strip a parallel to the edges to be sewn. Use the sewing thread to pass back and forth through the binding strip a, the first fabric b and the second fabric c to sew and form a seam strip.

[0037] Binding and sewing: Lay out the first fabric b and the second fabric c flat, then turn the unstitched edge of the binding strip a over to cover the seam strip, and place the unstitched edge of the binding strip a against the second fabric c. Fold the second fabric c outward along the unstitched edge of the binding strip a to form a folded tip. After passing the thread through the binding strip a, ensure that the thread passes through the folded tip without penetrating the two layers of fabric formed by folding the second fabric c, and sew back and forth.

[0038] This process covers the seam strips to eliminate the feeling of foreign objects, while ensuring that the binding seam does not penetrate the fabric to reach the outside of the seam, thus ensuring the appearance of the garment.

[0039] Preferably, the edge-pressing and sewing step also includes edge trimming, which involves cutting the fabric from the edge to the sewing position of the first fabric b and the second fabric c in the width direction to reduce the width of the edge to be sewn, reduce the feeling of foreign objects, and improve wearing comfort. At the same time, the narrower edge to be sewn helps to reduce the difficulty of the edge binding operation.

[0040] As a preferred option, the edge pressing and binding stitching adopts a single-needle three-thread process. This edge locking process is more complete and easy to adjust. At the same time, both ends of the binding strip a adopt a single-needle three-thread process, which increases the tensile strength of the strip.

[0041] The edge-sealing machine includes a first machine head 2 and a first sewing table 1. The first machine head 2 is mounted on the first sewing table 1. The first machine head 2 includes a first needle 21 and a first presser foot 22. The first needle 21 is fixedly mounted on the power output end of the first machine head 2. The first presser foot 22 is suspended on the first machine head 2 and its bottom surface can abut against the first sewing table 1. The first presser foot 22 is provided with a first needle opening 23 for the reciprocating movement of the first needle 21. The first presser foot 22 is provided with a guide hole 221 inside and a discharge hole 222 is provided in the middle of the bottom of the first presser foot 22. The first needle opening 23 extends inward from the side of the presser foot. The guide hole 221, the discharge hole 222 and the first needle opening 23 are in communication. The binding strip a enters the first presser foot 22 through the guide hole 221 and exits through the discharge hole 222.

[0042] When sewing three layers of fabric, simply pressing down the top and bottom layers does not adequately restrict the placement of the middle layer. This invention addresses this by designing a presser foot with a guide hole 221 to position the binding strip a, and then using the presser foot to press down the fabric to be sewn, thus stabilizing the position of the three layers and ensuring the quality of the sewing.

[0043] Preferably, the first presser foot 22 is rectangular, the guide hole 221 is square, and the front end of the first presser foot 22 is bent upward. Such a first presser foot 22 is not complicated to manufacture, and the square guide hole 221 can reliably guide the edge banding strip a.

[0044] Preferably, the first sewing head 2 also includes a cutting blade 3, which is fixedly installed at the power output end of the first sewing head 2. The cutting edge of the cutting blade 3 is parallel to the extension direction of the guide hole 221 of the first presser foot 22, and the cutting blade 3 is positioned in front of the first needle opening 23. Figure 1 As shown, due to the use of the overlock stitching process, the stitches will cover three sides of the seam strip. The cutter 3 needs to cut off the edge to be sewn along the edge of the first presser foot 22 before the machine sews, otherwise it will cut the stitches. The power source of the cutter 3 is synchronized with the first needle 21, which reduces the complexity of the equipment, facilitates adjustment, and improves work efficiency.

[0045] Preferably, the system also includes a tape feeding assembly 4, which includes a tape accumulator 41, a tape feeding bracket 42, and a guide wheel 46. The tape feeding bracket 42 is fixedly connected to the first sewing table 1. The tape accumulator 41 is rotatably mounted on one end of the tape feeding bracket 42, and the guide wheel 46 is rotatably mounted on the first sewing head 2 near the first sewing needle 21. The tape accumulator 41 and the guide wheel 46 are parallel to each other around their axes. The tape feeding assembly 4 allows the binding strip a to enter the sewing position smoothly and stably, making the feeding smoother and improving work efficiency.

[0046] Furthermore, the feeding assembly 4 also includes a power box 45, a drive wheel 44, and an idler wheel 43. The power box 45 is fixedly connected to the first sewing table 1. The drive wheel 44 is installed at the power output end of the power box 45. There are two idler wheels 43, which are rotatably mounted on the power box 45. The drive wheel 44 is located between the two idler wheels 43. The binding strip a is passed around the idler wheel 43 and the drive wheel 44 respectively. The power box 45 controls the rotation of the drive wheel 44 to assist in feeding, improve the automation level of the equipment, and can further improve work efficiency.

[0047] The overlock sewing machine includes a second sewing head 6 and a second sewing table 5. The second sewing head 6 includes a second needle 61 and a second presser foot 62. The second needle 61 is fixedly installed on the power output end of the second sewing head 6. The second presser foot 62 is suspended on the second sewing head 6 and its bottom surface can abut against the second sewing table 5. The second presser foot 62 is provided with a second needle opening 65 for the reciprocating movement of the second needle 61. The second presser foot 62 includes a base plate 621 and a guide plate 622. The guide plate 622 is installed on the base plate 621 and is parallel to the long side of the base plate 621. The guide plate 622 can extend and retract laterally on the base plate 621.

[0048] When sewing the binding strip and the second fabric, the worker holds the fabric with one hand and pulls the binding strip a with the other, making it difficult to control the direction of the stitching. This invention designs a presser foot with a guide plate 622, which confines the stitching strip between the presser foot and the guide plate 622, ensuring that the stitching does not deviate from the binding strip a during sewing, reducing operational difficulty and improving work efficiency.

[0049] Preferably, a stop bar 7 is also included. The stop bar 7 is parallel to the second presser foot 62 and fixed to the side of the second sewing table 5 near the second needle opening 65. The stop bar 7 can abut against the folded tip and, together with the guide plate 622 and the presser foot, form two guide points, which further restricts the direction of the sewing thread and improves work efficiency.

[0050] Specifically, such as Figure 3 as well as Figure 4 As shown, in the edge-sealing step, the binding strip a is taken out of the material bag, suspended on the upper pulley 41, pulled down and passed under the drive pulley 44 and wrapped around the idler pulley 43, then wrapped down from the idler pulley 43 and wrapped around the guide pulley 46, as shown. Figure 5 as well as Figure 6 As shown, the binding strip a is passed through the guide hole 221 and out of the discharge hole 222, and pressed under the rear section of the first presser foot 22 to complete the preparation of the binding strip. The guide wheel 46 can be adjusted at different angles by adjusting the support rod 461 to match the angle of the guide hole 221. Figure 1 as well as Figure 4As shown, the first fabric b and the second fabric c are overlapped and aligned, pressed under the first presser foot 22 and the binding strip a, and the edge sewing machine is started. The cutter 3 moves up and down together with the first needle 21 and cuts off the excess fabric beyond the first presser foot 22. Then the binding strip, the first fabric and the second fabric are sewn together to form the edge sewing line d. During this process, only the positions of the first fabric b and the second fabric c need to be adjusted to complete the edge sewing.

[0051] Specifically, such as Figure 2 as well as Figure 7 As shown, in the binding and sewing step, the binding strip a is turned over to cover the seam strip and the unsewn edge of the binding strip a is placed against the second fabric c. The second fabric c is folded outward along the unsewn edge of the binding strip a to form a folded tip. The folded tip is then pressed against the stop bar 7 and fed into the second presser foot 62, as shown. Figure 8 As shown, the guide plate 622 can slide laterally on the base plate 621. During use, the guide plate 622 is pressed against... Figure 2 On the left side of the seam strip shown, press the base plate 621 onto the right side of the seam strip, and then sew the binding strip and the folded tip to form the binding seam e, ensuring that the binding seam e passes through the folded tip but does not penetrate the two layers of fabric formed by folding the second fabric c, thus completing the binding seam.

[0052] In summary, this garment seam binding process covers the seam strips to eliminate any foreign object feeling while ensuring that the seam does not affect the appearance of the garment. Furthermore, the provided edge-pressing and binding machines can stably and efficiently perform seam binding operations.

[0053] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A garment seam binding process, characterized in that, The steps are as follows: Pressing and sewing: Take the first fabric and the second fabric to be sewn, and take the binding strip. Stack the binding strip, the first fabric and the second fabric in sequence, so that the edges of the first fabric and the second fabric to be sewn are aligned, and the binding strip is parallel to the edges to be sewn. Use the sewing thread to pass back and forth through the binding strip, the first fabric and the second fabric to sew and form a seam strip. Hemming and sewing: Lay out the first and second fabrics flat, then turn the unstitched edge of the binding strip over to cover the seam strip, and place the unstitched edge of the binding strip against the second fabric. Fold the second fabric outward along the unstitched edge of the binding strip to form a folded tip. After passing the binding strip with a sewing thread, ensure that the sewing thread passes through the folded tip without penetrating the two layers of fabric formed by folding the second fabric, and sew back and forth. The edge-pressing and sewing step also includes edge cutting, which involves cutting the fabric from the edge to the sewing position of the first and second fabrics in the width direction.

2. The garment seam binding process according to claim 1, characterized in that: The edge pressing and binding stitching adopts a single-needle three-thread process.

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